阅读说明：本技术 一种给料系统、给料设备的输送控制方法及输送控制系统 (Feeding system, conveying control method of feeding equipment and conveying control system ) 是由 郭呈义 朱宁 薛日顺 田青 江兴涛 潘仁湖 邱生祥 倪奕金 于 2021-08-25 设计创作，主要内容包括：本发明公开一种给料系统、给料设备的输送控制方法及输送控制系统,其中,所述给料设备包括给料装置和输送管道,所述给料装置包括给料器；所述输送控制方法包括如下步骤：步骤S101,获取前置时刻到当前时刻间的所述输送管道的管道压力,取当前时刻的所述管道压力为实时管道压力,其余时刻的所述管道压力为前时管道压力；步骤S102,计算所述前时管道压力的平均值,以得到前时管道平均压力；步骤S103,调节所述给料器的给料量,使得所述实时管道压力和所述前时管道平均压力的比值或者差值在第一设定范围内。上述输送控制方法可以提高物料输送过程中的稳定性。(The invention discloses a feeding system, a conveying control method of feeding equipment and a conveying control system, wherein the feeding equipment comprises a feeding device and a conveying pipeline, and the feeding device comprises a feeder; the conveying control method comprises the following steps: step S101, acquiring the pipeline pressure of the conveying pipeline between a preset moment and a current moment, and taking the pipeline pressure at the current moment as a real-time pipeline pressure and the pipeline pressures at other moments as front-time pipeline pressures; step S102, calculating the average value of the front time pipeline pressure to obtain the front time pipeline average pressure; step S103, adjusting the feeding amount of the feeder so that the ratio or the difference between the real-time pipeline pressure and the previous-time pipeline average pressure is within a first set range. The conveying control method can improve the stability of the material in the conveying process.)

1. A conveying control method of a feeding device, the feeding device comprising a feeding device (1) and a conveying pipe (2), the feeding device (1) comprising a feeder (11), characterized in that the conveying control method comprises the following steps:

step S101, acquiring the pipeline pressure of the conveying pipeline (2) from a previous moment to a current moment, and taking the pipeline pressure at the current moment as a real-time pipeline pressure and the pipeline pressures at other moments as previous pipeline pressures;

step S102, calculating the average value of the front time pipeline pressure to obtain the front time pipeline average pressure;

and step S103, adjusting the feeding amount of the feeder (11) so that the ratio or the difference between the real-time pipeline pressure and the previous-time pipeline average pressure is in a first set range.

2. The method for controlling the delivery of a feeding device according to claim 1, wherein the feeder (11) is normally operated at a set feeding amount, and the step S103 specifically comprises:

step S103a, judging whether the ratio of the real-time pipeline pressure to the previous-time pipeline average pressure is greater than or equal to M1, if so, executing the following step S103b, wherein 1< M1< 2;

step S103b, controlling the feeder (11) to reduce the feeding amount;

step S103c, determining whether a ratio of the real-time pipeline pressure to the previous-time pipeline average pressure is less than or equal to M2, if so, performing step S103d, wherein 1< M2< M1< 2;

step S103d, controlling the feeder (11) to operate at the set feeding amount;

the first set range includes a ratio of the real-time line pressure to the pre-time line average pressure being less than or equal to M2.

3. The conveying control method of a feeding device according to claim 1, wherein the feeder (11) is normally operated at a set feeding amount, and the step S103 further includes:

step S103e, determining whether a ratio of the real-time pipeline pressure to the pre-time pipeline average pressure is less than or equal to N1, if so, performing step S103f, wherein 0< N1< 1;

step S103f, controlling the feeder (11) to increase the feeding amount;

step S103g, determining whether a ratio of the real-time pipeline pressure to the previous-time pipeline average pressure is greater than or equal to N2, if so, executing step S103d, wherein 0< N1< N2< 1;

step S103d, controlling the feeder (11) to operate at the set feeding amount;

the first set range includes a ratio of the real-time line pressure to the pre-time line average pressure being greater than or equal to N2.

4. The feeding control method of feeding equipment according to claim 1, wherein the feeder (11) is configured with a frequency converter, and the adjusting of the feeding amount of the feeder (11) in step S103 specifically includes: the frequency of the frequency converter is adjusted to adjust the feeding amount of the feeder (11).

5. The feeding control method of a feeding device according to any one of claims 1 to 4, wherein the feeding device (1) comprises a feeding pump (12), the feeding pump (12) is connected with the feeder (11), the feeding pump (12) has a set feeding pressure, the set feeding pressure corresponds to the set feeding amount of the feeder (11), and the feeding control method further comprises the following steps:

step S201, acquiring real-time feeding pressure in the feeding pump (12);

step S202, adjusting the real-time feeding pressure of the feeding pump (12) so that the ratio or the difference between the real-time feeding pressure and the set feeding pressure is in a second set range.

6. The feeding control method of the feeding equipment according to claim 5, wherein the feeding pump (12) is provided with a feeding air valve, and the adjusting of the real-time feeding pressure of the feeding pump (12) in the step S202 is realized by adjusting the opening degree of the feeding air valve.

7. The feeding control method of a feeding device according to any one of claims 1-4, wherein the feeding device (1) comprises a feeding pump (12), the feeding pump (12) is connected with the feeder (11), and the feeding control method further comprises the following steps:

step S201, acquiring real-time feeding pressure in the feeding pump (12);

and step S203, adjusting the real-time feeding pressure of the feeding pump (12) so that the ratio or the difference between the real-time feeding pressure and the real-time pipeline pressure is in a third set range.

8. A conveying control method of a feeding device according to any one of claims 1-4, characterized by further comprising a blockage clearing valve (21), the feeding device further comprising a bin (14), one end of the blockage clearing valve (21) being communicated with the conveying pipeline (2) and the other end being communicated with the bin (14), the conveying control method further comprising:

step S301, judging whether the real-time pipeline pressure is greater than or equal to a pipe plugging pressure limit value, if so, executing the following step S302;

step S302, closing the feeder (11);

step S303, opening the blockage clearing valve (21), and recording the opening time of the blockage clearing valve (21);

step S304, judging whether the real-time pipeline pressure lasts for a first time period and is smaller than a first blockage clearing pressure, or judging whether the opening time reaches a first set time and the real-time pipeline pressure is smaller than a second blockage clearing pressure, and executing step S305 if the real-time pipeline pressure lasts for the first time period and is smaller than the first blockage clearing pressure, or the opening time reaches the first set time and the real-time pipeline pressure is smaller than the second blockage clearing pressure;

step S305, closing the blockage clearing valve (21), inflating the conveying pipeline (2), and recording inflation time;

step S306, determining whether the inflation time reaches a second set time and the real-time pipeline pressure is less than the second blockage removal pressure, if so, executing step S307, otherwise, repeatedly executing steps S303 to S305;

and step S307, controlling the feeding equipment to enter a normal operation mode.

9. The conveyance control method of a material-feeding apparatus according to claim 8, further comprising, after said step S305:

step S308, determining whether the real-time pipeline pressure continues for a second time period less than the first blockage removal pressure, if so, executing step S307, where the second time period is greater than the first time period.

10. The feeding control method of claim 8, wherein the feeding equipment further comprises a storage pump (13) and a feeding pump (12), the storage bin (14), the storage pump (13), the feeding pump (12) and the feeder (11) are connected in sequence, and after the step S302 and before the step S307, the method further comprises:

and S309, closing a communication valve between the storage bin (14) and the storage pump (13) and between the storage pump (13) and the feeding pump (12), and relieving pressure of the storage pump (13) and the feeding pump (12).

11. The conveyance control method of a feeder apparatus according to claim 8, further comprising, after the step S302: step S310: recording the blockage clearing time;

before the step S307, the method further includes:

step S311, determining whether the blockage clearing time reaches a third set time, if yes, executing step S312;

and step S312, sending alarm information.

12. The transportation control method of the feeding apparatus as claimed in claim 8, wherein in step S304, if the opening time reaches the first set time and the real-time pipe pressure is greater than or equal to the second blockage removal pressure, the following step S312 is executed;

and step S312, sending alarm information.

13. A delivery control system of a feeding apparatus, the feeding apparatus comprising a feeding device (1) and a delivery pipe (2), the feeding device (1) comprising a feeder (11), characterized in that the delivery control system comprises:

the first acquisition module is used for acquiring the pipeline pressure of the conveying pipeline (2) from a previous moment to a current moment, taking the pipeline pressure at the current moment as a real-time pipeline pressure, and taking the pipeline pressures at other moments as previous pipeline pressures;

the calculation module is in signal connection with the first acquisition module, and is used for receiving the front-time pipeline pressure and calculating the average value of the front-time pipeline pressure to obtain the front-time pipeline average pressure;

and the first adjusting module is in signal connection with the first acquiring module, the calculating module and the feeder (11) and is used for adjusting the feeding amount of the feeder (11) so that the ratio or the difference between the real-time pipeline pressure and the previous pipeline average pressure is within a first set range.

14. The conveyance control system of claim 13, wherein the first adjustment module comprises:

the calculation unit is in signal connection with the first acquisition module and the calculation module, and is used for receiving the real-time pipeline pressure and the early-time pipeline average pressure and calculating the ratio of the real-time pipeline pressure to the early-time pipeline average pressure;

a judging unit, connected with the calculating unit in signal, for receiving the ratio and judging whether the ratio is in the range of (N1, M1);

the control unit is in signal connection with the judging unit and is used for controlling the feeder (11) to reduce the feeding amount when the ratio is larger than or equal to M1 or controlling the feeder (11) to increase the feeding amount when the ratio is smaller than or equal to N1 until the ratio is in the range of [ N2, M2] and controlling the feeder (11) to operate at the set feeding amount;

wherein 0< N1< N2<1< M2< M1<2, and the first setting range is [ N2, M2 ].

15. The feeding control system of a feeding device according to claim 13, wherein the feeder (11) is provided with a frequency converter, and the first adjusting module adjusts the feeding amount of the feeder (11) by adjusting the frequency of the frequency converter.

16. A feeding control system of a feeding device according to any one of claims 13-15, characterized in that the feeding device (1) comprises a feeding pump (12), the feeding pump (12) is connected with the feeder (11), the feeding pump (12) has a set feeding pressure, the set feeding pressure corresponds to a set feeding amount of the feeder (11), the feeding control system further comprises:

a second acquisition module for acquiring a real-time feed pressure within the feed pump (12);

the second adjusting module is in signal connection with the second acquiring module, and is used for receiving the real-time feeding pressure and adjusting the real-time feeding pressure so that the ratio or the difference between the real-time feeding pressure and the set feeding pressure is within a second set range; alternatively, the first and second electrodes may be,

the second adjusting module is in signal connection with the first acquiring module and the second acquiring module, and is used for receiving the real-time pipeline pressure and the real-time feeding pressure and adjusting the real-time feeding pressure so that the ratio or the difference between the real-time feeding pressure and the real-time pipeline pressure is within a third set range.

17. The feeding control system of claim 16, characterized in that the feeding pump (12) is provided with a feeding gas valve, and the second regulating module regulates the real-time feeding pressure by regulating the opening degree of the feeding gas valve.

18. The conveying control system of the feeding equipment according to any one of claims 13-15, further comprising a blockage clearing valve (21), wherein the feeding equipment further comprises a storage bin (14), one end of the blockage clearing valve (21) is communicated with the conveying pipeline (2), and the other end of the blockage clearing valve is communicated with the storage bin (14), and the conveying control system further comprises a judgment module and a control module;

the judging module is in signal connection with the first acquiring module and is used for receiving the real-time pipeline pressure and judging whether the real-time pipeline pressure is larger than or equal to a pipe blockage pressure limit value, when the real-time pipeline pressure is larger than or equal to the pipe blockage pressure limit value, the control module is used for controlling the feeder (11) to be closed, and the control module is also used for controlling and executing a first operation: controlling the blockage clearing valve (21) to be opened and recording the opening time of the blockage clearing valve (21);

in the process of executing the first operation, the judging module is further configured to judge whether the real-time pipeline pressure continues for a first time period and is less than a first blockage clearing pressure, or judge whether the opening time reaches a first set time and the real-time pipeline pressure is less than a second blockage clearing pressure, and the first blockage clearing pressure is less than the second blockage clearing pressure;

when the real-time pipeline pressure continues for a first time period and is less than a first blockage clearing pressure, or when the opening time reaches a first set time and the real-time pipeline pressure is less than a second blockage clearing pressure, the control module is used for controlling to execute a second operation: controlling the blockage removing valve (21) to be closed, controlling the conveying pipeline (2) to be inflated, and recording the inflation time;

in the process of executing the second operation, the judging module is further configured to judge whether the inflation time reaches a second set time and whether the real-time pipeline pressure is less than the second blockage clearing pressure, or judge whether the real-time pipeline pressure continues for a second time period which is greater than the first time period and is less than the first blockage clearing pressure;

when the inflation time reaches the second set time and the real-time pipeline pressure is smaller than the second blockage clearing pressure, or when the real-time pipeline pressure continues for a second time period and is smaller than the first blockage clearing pressure, the control module is used for controlling the feeding equipment to enter a normal operation mode;

and when the inflation time is less than or equal to the second set time and the real-time pipeline pressure is greater than or equal to the second blockage removal pressure, the control module is also used for controlling the repeated execution of the first operation and the second operation.

19. The feeding control system of claim 18, wherein the feeding device further comprises a storage pump (13) and a feeding pump (12), the storage bin (14), the storage pump (13), the feeding pump (12) and the feeder (11) are sequentially connected, and the control module is further configured to relieve pressure of the storage pump (13) and the feeding pump (12) before controlling the feeding device to enter a normal operation mode.

20. The feeding device conveying control system of claim 18, wherein the control module is further configured to record a blockage clearing time when controlling to close the feeder (11), and the control module is further configured to send an alarm message when the blockage clearing time reaches a third set time before the control module controls the feeding device to enter a normal operation mode; and/or the presence of a gas in the gas,

when the control module controls and executes the first operation, if the opening time reaches the first set time and the real-time pipeline pressure is greater than or equal to the second blockage clearing pressure, the control module can also send alarm information.

21. A feeding system comprising a feeding device and a transport control system, characterized in that the transport control system is the transport control system of the feeding device according to any of claims 13-20.

Technical Field

The invention relates to the technical field of conveying control, in particular to a feeding system, a conveying control method of feeding equipment and a conveying control system.

Background

The existing pneumatic feeding device for the bin pump has the defects of large conveying fluctuation, unstable feeding amount and the like, and is not favorable for stable conveying of materials.

Disclosure of Invention

The invention aims to provide a feeding system, a conveying control method of feeding equipment and a conveying control system, which can improve the stability of materials in the conveying process.

In order to solve the technical problem, the invention provides a conveying control method of feeding equipment, wherein the feeding equipment comprises a feeding device and a conveying pipeline, and the feeding device comprises a feeder; the conveying control method comprises the following steps: step S101, acquiring the pipeline pressure of the conveying pipeline between a preset moment and a current moment, and taking the pipeline pressure at the current moment as a real-time pipeline pressure and the pipeline pressures at other moments as front-time pipeline pressures; step S102, calculating the average value of the front time pipeline pressure to obtain the front time pipeline average pressure; step S103, adjusting the feeding amount of the feeder so that the ratio or the difference between the real-time pipeline pressure and the previous-time pipeline average pressure is within a first set range.

Real-time pipeline pressure and the interior material volume of pipeline have the relevance, and preceding time pipeline average pressure can represent the average pressure situation in the pipeline of leading moment to the time quantum of present moment, through carrying out the comparison to real-time pipeline pressure and preceding time pipeline average pressure, can judge the undulant condition of the pipeline pressure of present moment, if undulant great, can adjust the feed volume of dispenser, so that real-time pipeline pressure and preceding time pipeline average pressure's ratio or difference are in first settlement range, and then can guarantee the stability of feed to a great extent.

In addition, the embodiment of the invention adopts the previous pipeline average pressure as a comparison value, the comparison value is a change value related to the real-time pipeline pressure, the actual pressure condition in the conveying pipeline can be more accurately reflected, and correspondingly, the real-time pipeline pressure is compared with the previous pipeline average pressure, so that the feeding amount can be more accurately adjusted.

Optionally, under a normal state, the feeder operates at a set feeding amount, and the step S103 specifically includes: step S103a, judging whether the ratio of the real-time pipeline pressure to the previous-time pipeline average pressure is greater than or equal to M1, if so, executing the following step S103b, wherein 1< M1< 2;

step S103b, controlling the feeder to reduce the feeding amount; step S103c, determining whether a ratio of the real-time pipeline pressure to the previous-time pipeline average pressure is less than or equal to M2, if so, performing step S103d, wherein 1< M2< M1< 2; step S103d, controlling the feeder to operate at the set feeding amount; the first set range includes a ratio of the real-time line pressure to the pre-time line average pressure being less than or equal to M2.

Optionally, in a normal state, the feeder operates at a set feeding amount, and the step S103 specifically further includes: step S103e, determining whether a ratio of the real-time pipeline pressure to the pre-time pipeline average pressure is less than or equal to N1, if so, performing step S103f, wherein 0< N1< 1; step S103f, controlling the feeder to increase the feeding amount; step S103g, determining whether a ratio of the real-time pipeline pressure to the previous-time pipeline average pressure is greater than or equal to N2, if so, executing step S103d, wherein 0< N1< N2< 1; step S103d, controlling the feeder to operate at the set feeding amount; the first set range includes a ratio of the real-time line pressure to the pre-time line average pressure being greater than or equal to N2.

Optionally, the feeder is configured with a frequency converter, and the adjusting the feeding amount of the feeder in step S103 specifically includes: the frequency of the frequency converter is adjusted to adjust the feeding amount of the feeder.

Optionally, the feeding device includes a feeding pump, the feeding pump is connected to the feeder, the feeding pump has a set feeding pressure, the set feeding pressure corresponds to a set feeding amount of the feeder, and the feeding control method further includes the following steps: step S201, acquiring real-time feeding pressure in the feeding pump; step S202, adjusting the real-time feeding pressure of the feeding pump so that the ratio or the difference between the real-time feeding pressure and the set feeding pressure is in a second set range.

Optionally, the feeding pump is configured with a feeding gas valve, and the adjusting of the real-time feeding pressure of the feeding pump in step S202 is specifically implemented by adjusting an opening degree of the feeding gas valve.

Optionally, the feeding device includes a feeding pump, the feeding pump is connected with the feeder, and the feeding control method further includes the following steps: step S201, acquiring real-time feeding pressure in the feeding pump; step S203, adjusting the real-time feeding pressure of the feeding pump so that the ratio or the difference between the real-time feeding pressure and the real-time pipeline pressure is in a third set range.

Optionally, the system further comprises a blockage clearing valve, the feeding device further comprises a bin, one end of the blockage clearing valve is communicated with the conveying pipeline, the other end of the blockage clearing valve is communicated with the bin, and the conveying control method further comprises: step S301, judging whether the real-time pipeline pressure is greater than or equal to a pipe plugging pressure limit value, if so, executing the following step S302; step S302, closing the feeder; step S303, opening the blockage clearing valve, and recording the opening time of the blockage clearing valve; step S304, judging whether the real-time pipeline pressure lasts for a first time period and is smaller than a first blockage clearing pressure, or judging whether the opening time reaches a first set time and the real-time pipeline pressure is smaller than a second blockage clearing pressure, and executing step S305 if the real-time pipeline pressure lasts for the first time period and is smaller than the first blockage clearing pressure, or the opening time reaches the first set time and the real-time pipeline pressure is smaller than the second blockage clearing pressure; step S305, closing the blockage removing valve, inflating the conveying pipeline, and recording inflation time; step S306, determining whether the inflation time reaches a second set time and the real-time pipeline pressure is less than the second blockage removal pressure, if so, executing step S307, otherwise, repeatedly executing steps S303 to S305; and step S307, controlling the feeding equipment to enter a normal operation mode.

Optionally, after the step S305, the method further includes: step S308, determining whether the real-time pipeline pressure continues for a second time period less than the first blockage removal pressure, if so, executing step S307, where the second time period is greater than the first time period.

Optionally, the feeding apparatus further includes a storage pump and a feeding pump, the storage bin, the storage pump, the feeding pump and the feeder are connected in sequence, and after step S302 and before step S307, the apparatus further includes: and S309, closing communication valves between the bin and the storage pump and between the storage pump and the feeding pump, and releasing pressure of the storage pump and the feeding pump.

Optionally, after the step S302, the method further includes: step S310: recording the blockage clearing time; before the step S307, the method further includes: step S311, determining whether the blockage clearing time reaches a third set time, if yes, executing step S312; and step S312, sending alarm information.

Optionally, in the step S304, if the opening time reaches the first set time and the real-time pipeline pressure is greater than or equal to the second blockage clearing pressure, the following step S312 is executed; and step S312, sending alarm information.

The invention also provides a conveying control system of the feeding equipment, the feeding equipment comprises a feeding device and a conveying pipeline, the feeding device comprises a feeder, and the conveying control system comprises: the first acquisition module is used for acquiring the pipeline pressure of the conveying pipeline from a previous moment to a current moment, taking the pipeline pressure at the current moment as a real-time pipeline pressure, and taking the pipeline pressures at other moments as previous pipeline pressures; the calculation module is in signal connection with the first acquisition module, and is used for receiving the front-time pipeline pressure and calculating the average value of the front-time pipeline pressure to obtain the front-time pipeline average pressure; and the first adjusting module is in signal connection with the first acquiring module, the calculating module and the feeder and is used for adjusting the feeding amount of the feeder so that the ratio or the difference between the real-time pipeline pressure and the previous-time pipeline average pressure is in a first set range.

Since the above-mentioned conveying control method of the feeding device has the technical effects, the conveying control system corresponding to the conveying control method also has similar technical effects, and therefore, the detailed description thereof is omitted here.

Optionally, the first adjusting module comprises: the calculation unit is in signal connection with the first acquisition module and the calculation module, and is used for receiving the real-time pipeline pressure and the early-time pipeline average pressure and calculating the ratio of the real-time pipeline pressure to the early-time pipeline average pressure; a judging unit, connected with the calculating unit in signal, for receiving the ratio and judging whether the ratio is in the range of (N1, M1); the control unit is in signal connection with the judging unit and is used for controlling the feeder to reduce the feeding amount when the ratio is larger than or equal to M1, or controlling the feeder to increase the feeding amount when the ratio is smaller than or equal to N1 until the ratio is in the range of [ N2, M2] and controlling the feeder to operate at the set feeding amount; wherein 0< N1< N2<1< M2< M1<2, and the first setting range is [ N2, M2 ].

Optionally, the feeder is provided with a frequency converter, and the first adjusting module adjusts the feeding amount of the feeder by adjusting the frequency of the frequency converter.

Optionally, the feeding device includes a feeding pump, the feeding pump is connected to the feeder, the feeding pump has a set feeding pressure, the set feeding pressure corresponds to a set feeding amount of the feeder, and the feeding control system further includes: the second acquisition module is used for acquiring real-time feeding pressure in the feeding pump; the second adjusting module is in signal connection with the second acquiring module, and is used for receiving the real-time feeding pressure and adjusting the real-time feeding pressure so that the ratio or the difference between the real-time feeding pressure and the set feeding pressure is within a second set range; or the second adjusting module is in signal connection with both the first acquiring module and the second acquiring module, and is used for receiving the real-time pipeline pressure and the real-time feeding pressure and adjusting the real-time feeding pressure so that the ratio or the difference between the real-time feeding pressure and the real-time pipeline pressure is within a third set range.

Optionally, the feeding pump is provided with a feeding air valve, and the second adjusting module adjusts the real-time feeding pressure by adjusting the opening degree of the feeding air valve.

Optionally, the system further comprises a blockage clearing valve, the feeding device further comprises a bin, one end of the blockage clearing valve is communicated with the conveying pipeline, the other end of the blockage clearing valve is communicated with the bin, and the conveying control system further comprises a judgment module and a control module; the judgment module is in signal connection with the first acquisition module and is used for receiving the real-time pipeline pressure and judging whether the real-time pipeline pressure is greater than or equal to a pipe blockage pressure limit value, and when the real-time pipeline pressure is greater than or equal to the pipe blockage pressure limit value, the control module is used for controlling the feeder to be closed, and the control module is also used for controlling and executing a first operation: controlling the blockage clearing valve to be opened and recording the opening time of the blockage clearing valve; in the process of executing the first operation, the judging module is further configured to judge whether the real-time pipeline pressure continues for a first time period and is less than a first blockage clearing pressure, or judge whether the opening time reaches a first set time and the real-time pipeline pressure is less than a second blockage clearing pressure, and the first blockage clearing pressure is less than the second blockage clearing pressure; when the real-time pipeline pressure continues for a first time period and is less than a first blockage clearing pressure, or when the opening time reaches a first set time and the real-time pipeline pressure is less than a second blockage clearing pressure, the control module is used for controlling to execute a second operation: controlling the blockage removing valve to be closed, controlling the conveying pipeline to be inflated, and recording the inflation time; in the process of executing the second operation, the judging module is further configured to judge whether the inflation time reaches a second set time and whether the real-time pipeline pressure is less than the second blockage clearing pressure, or judge whether the real-time pipeline pressure continues for a second time period which is greater than the first time period and is less than the first blockage clearing pressure; when the inflation time reaches the second set time and the real-time pipeline pressure is smaller than the second blockage clearing pressure, or when the real-time pipeline pressure continues for a second time period and is smaller than the first blockage clearing pressure, the control module is used for controlling the feeding equipment to enter a normal operation mode; and before the inflation time reaches a second set time and when the real-time pipeline pressure is greater than or equal to the second blockage removal pressure, the control module is also used for controlling the first operation and the second operation to be repeatedly executed.

Optionally, the feeding device further includes a storage pump and a feeding pump, the storage bin, the storage pump, the feeding pump and the feeder are sequentially connected, and the control module is further configured to release pressure from the storage pump and the feeding pump before controlling the feeding device to enter a normal operation mode.

Optionally, the control module is further configured to record a blockage clearing time when controlling to close the feeder, and the control module is further configured to send an alarm message when the blockage clearing time reaches a third set time before the control module controls the feeding device to enter a normal operation mode; and/or when the control module controls and executes the first operation, if the starting time reaches the first set time and the real-time pipeline pressure is greater than or equal to the second blockage clearing pressure, the control module can also send alarm information.

The invention also provides a feeding system, which comprises feeding equipment and a conveying control system, wherein the conveying control system is the conveying control system of the feeding equipment.

Since the above-mentioned conveying control system of the feeding device has the above technical effects, the feeding system having the conveying control system also has similar technical effects, and therefore, the detailed description thereof is omitted here.

Drawings

FIG. 1 is a schematic structural diagram of a feeding device of a feeding system provided by the present invention;

FIG. 2 is an enlarged view of a portion of the feed device and delivery conduit of FIG. 1;

FIG. 3 is a schematic flow chart of a first embodiment of a conveying control method of a feeding device provided by the invention;

FIG. 4 is a schematic flow chart illustrating a second embodiment of a transportation control method of a feeding device according to the present invention;

FIG. 5 is a schematic flow chart of a third embodiment of a conveying control method of the feeding device provided by the invention;

fig. 6 is a schematic flow chart of a fourth embodiment of the conveying control method of the feeding device provided by the invention.

The reference numerals in fig. 1-2 are illustrated as follows:

1, a feeding device, 11 feeders, 12 feeding pumps, 121 lower feeding valves, 122 pressure equalizing air valves, 123 fluidizing air valves, 13 storage pumps, 131 upper feeding valves, 132 upper secondary air valves, 133 lower secondary air valves, 14 bins, 141 gate valves, 142 expansion joints, 15 exhaust valves and 16 pressure equalizing valves;

2, conveying a pipeline, 21 a blockage clearing valve and 22 a main conveying air valve;

3, air source;

4 terminal device.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The terms "first," "second," and the like, herein are used for convenience only to describe two or more components, functional modules, parameters, and the like which are identical or similar in structure and/or function, and do not denote any particular limitation as to order and/or importance.

Referring to fig. 1-2, fig. 1 is a schematic structural diagram of a feeding device of a feeding system provided in the present invention, and fig. 2 is a partially enlarged view of a feeding device and a conveying pipeline in fig. 1.

As shown in fig. 1, the feeding device of the feeding system provided by the embodiment of the present invention is mainly a pneumatic conveying device, which may include a feeding device 1, a conveying pipe 2, an air source 3, and a terminal device 4. The gas source 3 is a gas storage device, and a certain amount of pressure gas is stored in the gas storage device and is used as a power fluid in the whole feeding device during material conveying process, and the type of the pressure gas is not limited herein. The terminal device 4 mainly refers to a device using materials, and the specific types of the device can be various; for example, the terminal device 4 may be a circulating fluidized bed boiler in the power industry, and in this case, the material may be an auxiliary additive such as a desulfurizing agent.

In connection with fig. 2, the following embodiment of the present invention will focus on the structure of the feeding device 1 and the conveying pipe 2.

The feeding device 1 may comprise a silo 14, a stock pump 13, a feeding pump 12 and a feeder 11, which may be arranged in sequence from top to bottom. The storage bin 14 is a storage component of materials, the lower end of the storage bin is connected with the upper end of the storage pump 13 through a switch valve in the form of a gate valve 141 and a hose in the form of a telescopic joint 142, the gate valve 141 is used for opening and closing a lower end opening of the storage bin 14, and the telescopic joint 142 can absorb vibration to buffer relative displacement between the storage bin 14 and the storage pump 13. The upper end of the storage pump 13 is provided with an upper feeding valve 131 for opening and closing the upper end opening of the storage pump 13; the storage pump 13 is further provided with an upper secondary air valve 132 and a lower secondary air valve 133 for adjusting the air pressure inside the storage pump 13 and fluidizing the material inside the storage pump 13 to ensure smooth material discharging inside the storage pump 13. The upper end of the feeding pump 12 is provided with a lower feeding valve 121 for opening and closing an upper end opening of the feeding pump 12; the feed pump 12 is further provided with a pressure equalizing air valve 122 and a fluidizing air valve 123 for adjusting the air pressure inside the feed pump 12 and fluidizing the material in the feed pump 12 to ensure smooth feeding of the material in the feed pump 12. The storage bin 14 is connected with an exhaust valve 15, the exhaust valve 15 is connected with a first three-way pipe, one of two outlets of the first three-way pipe is connected with the storage pump 13, the other outlet of the first three-way pipe is connected with a pressure equalizing valve 16, the pressure equalizing valve 16 is connected with a second three-way pipe, one of the two outlets of the second three-way pipe is connected with the feeding pump 12, and the other outlet of the second three-way pipe is connected with the feeder 11. The feeder 3 is arranged at the lower end opening of the feeding pump 12 and used for conveying the materials in the feeding pump 12 to the conveying pipeline 2.

The conveying pipeline 2 is connected with the air source 3 through a main conveying air valve 22, and the main conveying air valve 22 can adjust the communication state of the conveying pipeline 2 and the air source 3. Furthermore, a blockage clearing valve 21 can be further included, one end of the blockage clearing valve 21 can be connected with the conveying pipeline 2, and the other end of the blockage clearing valve 21 can be communicated with the storage bin 14; and the connection of the clean-up valve 21 to the delivery pipe 2 may be located downstream of the connection of the feeder 11 to the delivery pipe 2.

It should be noted that the above description of the structure of the feeding device 1 and the conveying pipeline 2 is only an exemplary illustration of the embodiment of the present invention, and in a specific practice, there may be some changes in the structure of the feeding device 1 and the conveying pipeline 2, especially some changes in local fine structures, such as the arrangement positions, the number, etc. of some air valves, but these should not be taken as limitations to the implementation scope of the feeding system, the conveying control method of the feeding device, and the conveying control system provided by the present invention.

In the operation process of the equipment, due to the characteristics of pneumatic transmission, the conditions of large transmission fluctuation and unstable feeding amount can exist, and the stable transmission of materials is not facilitated, so the embodiment of the invention also provides a transmission control method and a transmission control system of the feeding equipment.

Example one

Referring to fig. 3 to fig. 6, fig. 3 is a schematic flow chart of a first embodiment of a conveying control method of a feeding apparatus provided by the present invention, fig. 4 is a schematic flow chart of a second embodiment of the conveying control method of the feeding apparatus provided by the present invention, fig. 5 is a schematic flow chart of a third embodiment of the conveying control method of the feeding apparatus provided by the present invention, and fig. 6 is a schematic flow chart of a fourth embodiment of the conveying control method of the feeding apparatus provided by the present invention.

As shown in fig. 3, an embodiment of the present invention provides a conveying control method for a feeding apparatus, where the feeding apparatus includes a feeding device 1 and a conveying pipe 2, the feeding device 1 includes a feeder 11, and the conveying control method includes the following steps S101 to S103.

Step S101, acquiring the pipeline pressure of the conveying pipeline 2 from the previous moment to the current moment, and taking the pipeline pressure at the current moment as the real-time pipeline pressure and the pipeline pressures at the other moments as the previous pipeline pressure.

Assuming that the current time is T time, the previous time may be T- Δ T time, and a time period from the previous time to the current time may be Δ T, during which time period, data of several pipeline pressures may be collected. For convenience of description, the pipeline pressure at the current time may be referred to as a real-time pipeline pressure PT, and the pipeline pressures at the other times may be referred to as previous-time pipeline pressures PX, where the number of PX is not limited herein, and is specifically related to the sampling time period Δ T and the sampling interval of the detecting element in the form of a pressure sensor.

And step S102, calculating the average value of the front-time pipeline pressure to obtain the front-time pipeline average pressure.

Assuming that there are n PX, the pre-time pipe average pressure Pp may be passedCalculation of where PX_iIs the data of the pipeline pressure at the ith previous time.

In step S103, the feeding amount of the feeder 11 is adjusted so that the ratio or the difference between the real-time pipe pressure and the previous-time pipe average pressure is within a first set range.

Real-time pipeline pressure PT and the material volume in the pipeline 2 have the relevance, and preceding pipeline average pressure Pp can characterize the average pressure situation in the pipeline 2 of the triangle T time quantum of leading moment to current moment, through comparing PT and Pp, can judge the fluctuation condition of the pipeline pressure of current moment, if fluctuate greatly, can adjust the feed volume of dispenser 11 to make the ratio or the difference of real-time pipeline pressure PT and preceding pipeline average pressure Pp at first settlement scope, and then can guarantee the stability of feed to a great extent.

Furthermore, the embodiment of the present invention uses the previous time pipe average pressure Pp as a comparison value, which is a variation value related to the real time pipe pressure PT, and can reflect the actual pressure condition in the delivery pipe 2 more accurately, and accordingly, the feeding amount can be adjusted more accurately by comparing PT with Pp.

In detail, the feeder 11 may be provided with a frequency converter (not shown), and the feeder 11 may adjust the feeding amount by changing the frequency of the frequency converter. Under the normal state, the frequency converter can set the frequency to work, and at this time, the feeder 11 can have the set feeding amount; that is, there is a correspondence between the set feeding amount and the set frequency, and this correspondence is preset, specifically, there is a correlation with the structure, model, and the like of the feeder 11.

The ratio or difference between the real-time pipeline pressure PT and the previous-time pipeline average pressure Pp reflects the fluctuation amount of PT relative to Pp, and in particular, one skilled in the art can select either one of them for use. In the following description, the conveying control method provided by the embodiment of the present invention is mainly explained in detail by taking the ratio of PT and Pp as an example.

As shown in fig. 4, the step S103 may specifically include: step S103a, judging whether the ratio of the real-time pipeline pressure PT to the previous-time pipeline average pressure Pp is greater than or equal to M1, if so, executing the following step S103b, wherein 1< M1<2, preferably 1.01 < M1< 1.3; step S103b, controlling the feeder 11 to decrease the feeding amount; step S103c, judging whether the ratio of the real-time pipeline pressure PT to the previous-time pipeline average pressure Pp is less than or equal to M2, if so, executing the following step S103d, wherein 1< M2< M1< 2; in step S103d, the feeder 11 is controlled to operate again at the set feeding amount. Thus, the first set range may include a ratio of the real-time pipe pressure PT to the previous-time pipe average pressure Pp being less than or equal to M2.

When PT/Pp is larger than or equal to M1, that is, the real-time pipeline pressure PT in the conveying pipeline 2 is larger, which means that the material amount in the conveying pipeline 2 is larger, at this time, the feeder 11 can be controlled to reduce the feeding amount, so as to avoid the situation that the material amount in the conveying pipeline 2 is continuously increased to a larger extent and continuously increase the material conveying amount, and reduce the risk of pipe blockage.

In addition, the end point of the feeding amount reduction by the control feeder 11 is PT/Pp ≦ M2, and M2< M1, that is, when the feeding amount reduction is adjusted, there is a certain "overshoot", which can avoid the problem of unstable control caused by the repeated execution of steps S103b and S103d due to the repeated jump of PT/Pp near M1 when the fluctuation of the material is large.

The feeder 11 may reduce the feeding amount by reducing the frequency of the frequency converter, for example, the feeder 11 may reduce the feeding amount by reducing the frequency of the first specific amount at a first specific time. The first specific time and the first specific amount are not limited, and in specific practice, those skilled in the art can adjust the first specific time and the first specific amount according to actual needs; for example, the first specific time may be 4s to 6s, for example, 5s, and the first specific amount may be 0.5Hz to 1.5Hz, for example, 1Hz, so that the feeding amount may be reduced by controlling the feeder 11 to operate by reducing 1Hz every 5 s.

Further, the step S103 may further include: step S103e, judging whether the ratio of the real-time pipeline pressure to the previous-time pipeline average pressure is less than or equal to N1, if so, executing the following step S103f, wherein 0< N1<1, preferably 0.7 < N1< 0.99; step S103f, controlling the feeder 11 to increase the feeding amount; step S103g, determine whether the ratio of the real-time line pressure PT to the previous-time line average pressure Pp is greater than or equal to N2, if yes, execute the aforementioned step S103d, where 0< N1< N2< 1. Thus, the first set range described above may also include a ratio of the real-time line pressure to the previous-time line average pressure that is greater than or equal to N2, and in conjunction with the aforementioned associated limitations regarding the upper limit value of the first set range, the first set range may be N2 ≦ PT/Pp ≦ M2.

When PT/Pp is less than or equal to N1, which means that the real-time pipeline pressure PT in the conveying pipeline 2 is smaller, which means that the amount of the material in the conveying pipeline 2 is smaller, at this time, the feeder 11 can be controlled to increase the feeding amount, so as to largely avoid the situation that the amount of the material in the conveying pipeline 2 is continuously reduced and the material conveying amount is continuously reduced.

In addition, the end point of the feeding amount reduction by the control feeder 11 is PT/Pp ≧ N2, and N1< N2, that is, when the adjustment for increasing the feeding amount is performed, there can be a certain "overshoot", which can avoid the problem of unstable control caused by the repeated execution of steps S103f and S103d due to the repeated jump of PT/Pp near N1 when the fluctuation of the material is large.

Similarly to the method of reducing the feeding amount, the feeder 11 may specifically increase the frequency of the frequency converter, for example, the feeding amount may be increased by increasing the frequency of a second specific amount every second specific time. The definition of the second specific time and the second specific amount herein may refer to the first specific time and the first specific amount as described above.

The above steps S101 to S103 mainly adjust the feeding amount of the feeder 11 according to the pipeline pressure in the conveying pipeline 2, and besides, the feeding pressure in the feeding pump 12 can also be adjusted, which is also beneficial to improving the stability of material conveying.

In particular, the feed pump 12 may have a set feed pressure, which may correspond to a set feeding amount of the feeder 11, which correspondence is also preset. As shown in fig. 5, the transportation control method provided in the embodiment of the present invention may further include the following steps: step S201, acquiring a real-time feeding pressure in the feeding pump 12; step S202, the real-time feeding pressure of the feeding pump 12 is adjusted so that the ratio or the difference between the real-time feeding pressure and the set feeding pressure is within a second set range. In the embodiment of the present invention, the real-time feeding pressure may be represented by P2, and the set feeding pressure may be represented by Ps.

If the feed pressure P2 in the feed pump 12 is too high, it may easily result in too high a discharge speed of the feeder 11 into the transport pipe 2, whereas if the feed pressure P2 in the feed pump 12 is too low, it may result in too low a discharge speed of the feeder 11 into the transport pipe 2. Therefore, there is also a necessity for the regulation of the real-time feed pressure P2 of the feed pump 12.

Similar to the real-time line pressure PT and the previous line average pressure Pp, the ratio or the difference between the real-time feeding pressure P2 and the set feeding pressure Ps can reflect the relationship between the real-time feeding pressure P2 and the set feeding pressure Ps, and in particular, one of the real-time feeding pressure P2 and the previous line average pressure Ps can be selected by those skilled in the art for use. In the following description, the conveying control method provided by the embodiment of the present invention is mainly explained by taking the ratio of P2 and Ps as an example.

For convenience of description, the above-described second setting range may be set to (N3, M3), i.e., it is necessary that N3< P2/Ps < M3. Thus, when the P2/Ps is more than or equal to M3 or the P2/Ps is less than or equal to N3, the real-time feeding pressure P2 can be adjusted. Here, the embodiment of the present invention does not limit the specific values of N3 and M3, and in practice, those skilled in the art may determine the values by combining the actual conditions; in an exemplary embodiment, M3 may be 1, i.e., when P2 reaches Ps, the real-time feed pressure P2 may be adjusted in a descending manner, and N3 may be between [0.85, 0.99 ].

The feed pump 12 may be configured with a feed gas valve, which, in conjunction with fig. 2, may include a pressure equalization gas valve 122 and a fluidization gas valve 123, both of which may be used to regulate the real-time feed pressure P2. In particular practice, the real-time feed pressure P2 of feed pump 12 may be adjusted by adjusting the opening of fluidization gas valve 123 (in practice, the opening and closing of fluidization gas valve 123 may be directly controlled).

In addition, the adjustment of the real-time feed pressure P2 within the feed pump 12 may also be based on a comparison with the real-time line pressure PT. In detail, as also shown in fig. 5, after step S201, step S203 may further be included: the real-time feed pressure P2 of the feed pump 12 is adjusted such that the ratio or difference between the real-time feed pressure P2 and the real-time line pressure PT is within a third set range.

If the difference between the real-time feeding pressure P2 in the feeding pump 12 and the real-time pipeline pressure PT is too large, the discharging speed of the feeder 11 to the conveying pipeline 2 is too fast or too slow, therefore, the third setting range is set in the embodiment of the present invention to control the difference between the real-time feeding pressure P2 and the real-time pipeline pressure PT, so as to largely avoid the problem of unstable conveying caused by the too large difference between the real-time feeding pressure P2 and the real-time pipeline pressure PT.

Similar to the real-time line pressure PT and the previous line average pressure Pp, the ratio or difference between the real-time feed pressure P2 and the real-time line pressure PT may reflect the relationship between P2 and the real-time line pressure PT, and one of them may be selected by those skilled in the art for use in specific implementations. In the following description, the conveying control method provided by the embodiment of the present invention is mainly explained in detail by taking the ratio of P2 and PT as an example.

For convenience of description, the third setting range described above may be set to (N4, M4), i.e., it is necessary that N4< P2/PT < M4. Thus, when P2/PT is more than or equal to M4 or P2/PT is less than or equal to N4, the real-time feeding pressure P2 can be adjusted. Here, the embodiments of the present invention do not limit the specific values of N4 and M4, and those skilled in the art can determine the values by combining the actual situations when implementing the embodiments; in an exemplary approach, both N4 and M4 may be between [1.01, 1.2], and N4 may be less than M4. The adjustment of the real-time feed pressure P2 can be made in the manner described above, and will not be described in detail here.

Further, a blockage removing valve 21 can be further included, the feeding device can further include a bin 14, and one end of the blockage removing valve 21 is communicated with the conveying pipeline 2, and the other end of the blockage removing valve is communicated with the bin 14. In the actual operation process of the equipment, although the feeding amount can be regulated and controlled by the conveying control method so as to ensure the stability of the feeding process as much as possible, pipe blockage caused by various accidents can still occur.

For this reason, the transportation control method provided by the present invention may further include a blockage clearing step, as shown in fig. 6, which may include at least steps S301 to S307 described below.

Step S301, judging whether the real-time pipeline pressure is greater than or equal to the pipe plugging pressure limit value, if so, executing the following step S302. The pipe plugging pressure limit value is a fixed value, and is specifically related to the structural parameters of the conveying pipeline 2, and the like, and is not limited herein.

In step S302, the feeder 11 is closed. The closing of the feeder 11 can establish a physical separation between the delivery pipe 2 and the feeder device 1 to isolate the air flow communication therebetween, thereby facilitating the operation of the delivery pipe 2 in the subsequent steps.

Step S303, the blockage clearing valve 21 is opened, and the opening time of the blockage clearing valve 21 is recorded. The block removal valve 21 communicates with the silo 14, and the silo 14 is usually under atmospheric pressure, which is much lower than the pressure in the conveying pipe 2, so that the silo 14 can form a far-end negative pressure relative to the conveying pipe 2, and can relieve the conveying pipe 2 and suck the material blocked in the conveying pipe 2 reversely to suck the material at the blockage into the silo 14. The opening times described above correspond in practice to the times of pressure relief and suction.

Step S304, judging whether the real-time pipeline pressure PT lasts for a first time period and is smaller than a first blockage clearing pressure Pq1, or judging whether the opening time reaches a first set time and the real-time pipeline pressure PT is smaller than a second blockage clearing pressure Pq 2; if the real-time pipe pressure PT continues to be less than the first blockage pressure Pq1 for the first period of time or the on-time reaches the first set time and the real-time pipe pressure PT is less than the second blockage pressure Pq2, which means that the pressure relief is completed, the following step S305 may be performed. The first unblocking pressure Pq1 is less than the second unblocking pressure Pq 2.

Here, the embodiment of the present invention sets two judgment criteria for the pressure relief end point, wherein the real-time pipeline pressure PT is lower than the first unblocking pressure Pq1 for a first period of time, which is a relatively high criterion (hereinafter referred to as a first criterion), and when the relationship between PT and Pq1 is satisfied, the pressure relief is completed. However, since the blockage conditions in the delivery pipe 2 are different, the first criterion may need a longer time to be met, and in order to save time, the embodiment of the present invention further sets a second criterion that the opening time reaches the first set time and the real-time pipe pressure PT is smaller than the second blockage clearing pressure Pq2, and when the second criterion is met, the subsequent operation may be advanced to speed up the blockage clearing operation as much as possible.

Specific values of the first time period, the first blockage removal pressure Pq1, the first setting time and the second blockage removal pressure Pq2 are not limited herein, and in practical applications, those skilled in the art can set the values according to specific situations. For example, the first time period may be 4s to 6s, for example, 5 s; the first set time may be less than 60s, for example, 50 s; the first blockage clearing pressure Pq1 and the second blockage clearing pressure Pq2 can be between 0KPa and 800KPa, and the second blockage clearing pressure Pq2 can be not less than 200 KPa.

It should be noted that if the opening time reaches the first setting time, and the real-time pipeline pressure PT is not less than the second blockage clearing pressure Pq2, it means that the reverse suction is basically ineffective for blockage clearing operation, and at this time, step S312, which will be described below, may also be executed to send out an alarm message to the outside, so as to complete blockage clearing operation by human intervention. The form of the alarm information can be information such as sound and light, and the like, and can also be character information, and when the alarm information is the character information, a display can be configured to display the character information on the display; or in practical application, various information such as acousto-optic alarm information, character information and the like can also exist at the same time.

Step S305, closing the blockage clearing valve 21, inflating the conveying pipeline 2, and recording the inflation time.

Step S306, determining whether the inflation time reaches a second set time and the real-time pipeline pressure PT is less than a second blockage clearing pressure Pq 2. If yes, indicating that the pipeline is unblocked, the following step S307 may be executed; if not, namely when the inflation time does not reach the second time or just reaches the second set time, PT is not less than or equal to Pq2, indicating that there is a blockage in the conveying pipeline 2, the steps S303 to S305 can be repeatedly executed to repeatedly perform the pressure relief and inflation operations, and further perform blockage clearing on the blockage position.

And step S307, controlling the feeding equipment to enter a normal operation mode.

In view of the above, the conveying control method provided by the embodiment of the present invention can clear the blocked material in the conveying pipeline 2 through repeated pressure relief and pressure charging operations, so that the feeding device 1 can be quickly restored to the normal operation mode.

Further, after step S305, the method may further include: step S308, determining whether the real-time pipeline pressure PT continues for a second time period less than the first blockage clearing pressure Pq1, if so, executing step S307, where the second time period is greater than the first time period. If the real-time pipe pressure PT during the charging process continues to be less than the first unblocking pressure Pq1 for a second period of time, which indicates that the blocking condition in the conveying pipe 2 has been removed, the feeding device may be controlled to enter the normal operation mode.

The specific value of the second time period is not limited, and those skilled in the art can select the second time period according to actual needs in implementation. In one exemplary approach, the second time period may be between 25s-35s, for example, may be 30 s.

Further, after step S302 and before step S307, the method may further include: in step S309, the communication valves (the upper feed valve 131 and the lower feed valve 121 mentioned earlier) between the silo 14 and the magazine pump 13 and between the magazine pump 13 and the feed pump 12 are closed, and the pressure of the magazine pump 13 and the feed pump 12 is released. In the illustrated embodiment, step S309 may be between step S302 and step S303.

Because the blockage clearing mode adopted by the embodiment of the invention is to repeatedly release and pressurize the pressure in the conveying pipeline 2, the pressure in the conveying pipeline 2 is actually lower after blockage clearing is finished. In contrast, in step S309, the pressure of the storage pump 13 and the feeding pump 12 can be relieved, so that a situation that a large amount of material in the feeding pump 12 suddenly flows into the conveying pipeline 2 or a large amount of material in the storage pump 13 suddenly flows into the feeding pump 12 due to an excessive pressure difference after the equipment returns to a normal operation mode can be avoided to a great extent, which is also beneficial to ensuring the stability in the material conveying process.

The pressure relief of the reservoir pump 13 and the feed pump 12 can be realized in particular by means of the previously described venting valve 15 and equalizing valve 16.

Further, the step S302 may further include a step S310: recording the blockage clearing time, wherein the blockage clearing time refers to the time of blockage clearing operation performed after the feeder 11 is closed; before step S307, the method may further include: step S311, determining whether the blockage clearing time reaches a third set time, if yes, executing step S312; and step S312, sending alarm information. In the figure embodiment, step S310 may be performed after step S309.

In order to avoid the blockage clearing process from falling into a dead cycle, a third set time can be given, the total blockage clearing time is recorded, if the blockage clearing time reaches the third set time and the blockage clearing operation is not completed, the conveying control can be stopped, and alarm information is sent out to request manual participation to complete the blockage clearing operation.

The normal operation mode, that is, the process of normally replenishing the material into the storage pump 13 by the bin 14 and normally replenishing the material into the feeding pump 12 by the storage pump 13, mainly relates to pressure equalization control between the bin 14 and the storage pump 13, pressure equalization control between the storage pump 13 and the feeding pump 12, material level detection in each pump body, and the like, and the operation mode may refer to the prior art and will not be described in detail herein.

Example two

The embodiment of the present invention further provides a conveying control system of a feeding apparatus, where the conveying control system corresponds to the conveying control method in the first embodiment, and therefore, the descriptions and limitations related to the parameters and technical effects in the first embodiment are also applicable to the present embodiment, and for these descriptions that may exist repeatedly, reference may be made to the first embodiment, and only a part of the descriptions will be described in the present embodiment.

The conveying control system provided by the embodiment of the invention comprises: the first acquisition module is used for acquiring the pipeline pressure of the conveying pipeline 2 from the previous moment to the current moment, taking the pipeline pressure at the current moment as the real-time pipeline pressure PT, and taking the pipeline pressures at the other moments as the previous pipeline pressures, and the first acquisition module can be specifically a pressure sensor and the like; the calculation module is in signal connection with the first acquisition module and is used for receiving the front-time pipeline pressure and calculating the average value of the front-time pipeline pressure to obtain the front-time pipeline average pressure Pp; the first adjusting module is in signal connection with the first acquiring module, the calculating module and the feeder 11 and is used for adjusting the feeding amount of the feeder 11, so that the ratio or the difference between the real-time pipeline pressure and the previous average pipeline pressure is within a first set range.

Real-time pipeline pressure PT and the material volume in the pipeline 2 have the relevance, and preceding pipeline average pressure Pp can characterize the average pressure situation in the pipeline 2 of leading moment to the time quantum of present moment, through comparing PT and Pp, can judge the undulant condition of the pipeline pressure of present moment, if fluctuate greatly, can adjust the feed volume of dispenser 11, so that the ratio or the difference of real-time pipeline pressure PT and preceding pipeline average pressure Pp is in first settlement range, and then can guarantee the stability of feed to a great extent.

Furthermore, the embodiment of the present invention uses the previous time pipe average pressure Pp as a comparison value, which is a variation value related to the real time pipe pressure PT, and can reflect the actual pressure condition in the delivery pipe 2 more accurately, and accordingly, the feeding amount can be adjusted more accurately by comparing PT with Pp.

In detail, the first adjusting module may include: the calculation unit is in signal connection with the first acquisition module and the calculation module, and is used for receiving the real-time pipeline pressure and the previous pipeline average pressure and calculating the ratio of the real-time pipeline pressure to the previous pipeline average pressure; the judging unit is connected with the calculating unit in a signal mode, is used for receiving the ratio and is used for judging whether the ratio is in the range of (N1, M1); the control unit is in signal connection with the judging unit and is used for controlling the feeder 11 to reduce the feeding amount when the ratio is larger than or equal to M1, or controlling the feeder 11 to increase the feeding amount when the ratio is smaller than or equal to N1 until the ratio is in the range of [ N2, M2] and controlling the feeder 11 to operate at the set feeding amount; wherein 0< N1< N2<1< M2< M1<2, and the first setting range is [ N2, M2 ].

In practical use, the calculating module and the first adjusting module may be integrated into the same controller, and for convenience of description, the controller may be referred to as a first controller, and then the first controller may obtain the pressure signal measured by the first obtaining module (pressure sensor), and adjust and control the feeding amount of the feeder 11 according to the pressure signal. In detail, the feeder 11 may be configured with a frequency converter, and the first adjusting module may specifically adjust the feeding amount of the feeder 11 by adjusting the frequency of the frequency converter.

The first obtaining module, the calculating module and the first adjusting module are mainly used for adjusting the feeding amount of the feeder 11 according to the pressure of the pipeline in the conveying pipeline 2. In addition, the conveying control module provided by the embodiment of the invention can also adjust the feeding pressure in the feeding pump 12, which is also beneficial to improving the stability of material conveying.

In detail, the conveying control system provided by the embodiment of the present invention may further include: the second acquisition module is used for acquiring the real-time feeding pressure in the feeding pump 12, and the second acquisition module can be a pressure sensor and the like; the second adjusting module can be in signal connection with the second acquiring module, and is used for receiving the real-time feeding pressure and adjusting the real-time feeding pressure so that the ratio or the difference between the real-time feeding pressure and the set feeding pressure is within a second set range; or the second adjusting module is in signal connection with the first acquiring module and the second acquiring module, and is used for receiving the real-time pipeline pressure and the real-time feeding pressure and adjusting the real-time feeding pressure so that the ratio or the difference between the real-time feeding pressure and the real-time pipeline pressure is within a third set range.

As described in the embodiments, the real-time feeding pressure is adjusted by using the set feeding pressure or the real-time pipeline pressure as a reference, and the discharging speed of the feeder 11 can be controlled to largely avoid the situation that the discharging speed is too fast or too slow, so that the feeding device 1 can relatively stably convey the material.

Likewise, the second regulating module may also be integrated into the controller, which may be the second controller, and the real-time feed pressure P2 may be regulated by the second controller. The second controller and the first controller may be integrated in the same control component, or of course, they may be separately provided.

The feed pump 12 may be configured with a feed gas valve, which, in conjunction with fig. 2, may include a pressure equalization gas valve 122 and a fluidization gas valve 123, both of which may be used to regulate the real-time feed pressure P2. In particular practice, the second regulation module may regulate the real-time feed pressure P2 of the feed pump 12 by regulating the opening of the fluidization gas valve 123 (in practice, the opening and closing of the fluidization gas valve 123 may be directly controlled).

Further, the material feeding device can further comprise a blockage clearing valve 21, the material feeding device can further comprise a storage bin 14, one end of the blockage clearing valve 21 can be communicated with the conveying pipeline 2, the other end of the blockage clearing valve can be communicated with the storage bin 14, and the conveying control system further comprises a judgment module and a control module.

The judgment module can be in signal connection with the first acquisition module and is used for receiving the real-time pipeline pressure and judging whether the real-time pipeline pressure is greater than or equal to the pipe blockage pressure limit value or not, and when the real-time pipeline pressure is greater than or equal to the pipe blockage pressure limit value, the pipe blockage accident in the conveying pipeline 2 is indicated. The control module is used for controlling the feeder 11 to be closed, and the control module is further used for controlling the first operation to be executed: and controlling the opening of the blockage clearing valve 21 and recording the opening time of the blockage clearing valve 21 so as to relieve the pressure in the conveying pipeline 2 and suck the blocked position under negative pressure.

In the process of negative pressure suction, the judging module is also used for judging whether the real-time pipeline pressure lasts for a first time period and is less than first blockage clearing pressure or is used for judging whether the opening time reaches first set time and whether the real-time pipeline pressure is less than second blockage clearing pressure, and the first blockage clearing pressure is less than the second blockage clearing pressure. When the real-time pipeline pressure is less than the first blockage clearing pressure for a first time period or when the opening time reaches a first set time and the real-time pipeline pressure is less than a second blockage clearing pressure, namely the pressure relief is finished, the control module is also used for controlling to execute a second operation: controlling the blockage clearing valve 21 to be closed, controlling the air charging into the conveying pipeline 2 and recording the air charging time so as to charge the pressure in the conveying pipeline 2. A specific way of controlling the charging may be to control the main conveying gas valve 22 to open for charging the conveying pipe 2.

In the process of pressurizing, the judging module is further used for judging whether the inflation time reaches a second set time and whether the real-time pipeline pressure is smaller than a second blockage clearing pressure or whether the real-time pipeline pressure lasts for a second time period smaller than the first blockage clearing pressure, and the second time period is larger than the first time period. When the inflation time reaches a second set time and the real-time pipeline pressure is smaller than a second blockage clearing pressure, or when the real-time pipeline pressure continues for a second time period and is smaller than a first blockage clearing pressure, that is, the blockage condition in the conveying pipeline 2 is relieved, the control module can be used for controlling the feeding equipment to enter a normal operation mode.

If the real-time pipeline pressure is greater than or equal to the second blockage clearing pressure within the inflation time less than or equal to the second set time, the blockage in the conveying pipeline 2 is indicated, and the control module can be further used for controlling the first operation and the second operation to be repeatedly executed so as to repeatedly perform the pressure relief operation and the punching operation, thereby clearing the blockage position.

The feeding equipment can further comprise a storage pump 13 and a feeding pump 12, the storage bin 14, the storage pump 13, the feeding pump 12 and the feeder 11 are sequentially connected, and the control module can be used for releasing pressure of the storage pump 13 and the feeding pump 12 before controlling the feeding equipment to enter a normal operation mode so as to avoid unstable material conveying caused by overlarge pressure difference between the feeding pump 12 and the conveying pipeline 2 and overlarge pressure difference between the storage pump 13 and the feeding pump 12.

The pressure relief of the storage pump 13 and the feed pump 12 may be achieved by controlling the opening of the vent valve 15 and the pressure equalizing valve 16.

When the control module controls and executes the blockage clearing operation, specifically, when the feeder 11 is controlled to be closed, the control module can also record the blockage clearing time, and before the blockage clearing operation is completed (namely before the blockage clearing operation is controlled to enter the normal operation mode), if the blockage clearing time reaches a third set time, the control module can also be used for sending alarm information so as to avoid the endless loop of the blockage clearing operation, and enable the manual work to participate in time, thereby carrying out the manual blockage clearing operation.

The control module and the judgment module can also be integrated in a controller, the controller can be a third controller, and the third controller can further control and execute blockage clearing operation. The third controller, the first controller and the second controller may be integrated in the same control component, and of course, the third controller, the first controller and the second controller may be separately provided.

EXAMPLE III

An embodiment of the present invention further provides a feeding system, including a feeding device and a conveying control system, where the conveying control system may be the conveying control system of the feeding device related to each implementation manner in the second embodiment.

Since the conveying control system of the feeding device in the second embodiment has the above technical effects, the feeding system having the conveying control system also has similar technical effects, and therefore, the detailed description thereof is omitted here.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.