阅读说明：本技术 一种集料系统及其集料方法 (Material collecting system and material collecting method thereof ) 是由 朱英 于 2021-01-18 设计创作，主要内容包括：本发明涉及一种集料系统,包括气体入口、除尘装置和真空集料装置,真空集料装置包括第一切换阀,第一真空集料罐和第二真空集料罐与第一切换阀连接,且与第二切换阀连接,第二切换阀与一过滤器连接,过滤器与真空泵连接,真空泵与气体出口连接；当第一真空集料罐通过第一切换阀与气流管道连通时,第二真空集料罐通过第二切换阀与所述真空泵连通；当第一真空集料罐通过第二切换阀与真空泵连通时,第二真空集料罐通过第一切换阀与所述气流管道连通。本发明结构简单,不受空间限制同时也减少了人工工作量,提高了维护便利性。并且,本发明大大减少了粉尘随气流外排的可能和二次扬尘的风险。同时,本发明增加了灵活性,有助于集料系统的模块化。(The invention relates to an aggregate system, which comprises a gas inlet, a dust removal device and a vacuum aggregate device, wherein the vacuum aggregate device comprises a first switching valve, a first vacuum aggregate tank and a second vacuum aggregate tank are connected with the first switching valve and the second switching valve, the second switching valve is connected with a filter, the filter is connected with a vacuum pump, and the vacuum pump is connected with a gas outlet; when the first vacuum material collecting tank is communicated with the air flow pipeline through the first switching valve, the second vacuum material collecting tank is communicated with the vacuum pump through the second switching valve; when the first vacuum material collecting tank is communicated with the vacuum pump through the second switching valve, the second vacuum material collecting tank is communicated with the air flow pipeline through the first switching valve. The invention has simple structure, is not limited by space, reduces the manual workload and improves the maintenance convenience. In addition, the invention greatly reduces the possibility of dust discharge along with the air flow and the risk of secondary dust emission. Meanwhile, the invention increases the flexibility and is beneficial to the modularization of the aggregate system.)

1. An aggregate system, comprising:

a gas inlet configured to deliver compressed air to the gas flow duct;

the dust removal device is connected with the gas inlet through the gas flow pipeline;

the vacuum material collecting device is connected with the dust removing device through the airflow pipeline and comprises a first switching valve, the first switching valve is respectively connected with a first vacuum material collecting tank and a second vacuum material collecting tank, the first vacuum material collecting tank and the second vacuum material collecting tank are both connected with a second switching valve, the second switching valve is connected with a filter, the filter is connected with a vacuum pump, and the vacuum pump is connected with a gas outlet; wherein the content of the first and second substances,

when the first vacuum material collecting tank is communicated with the airflow pipeline through the first switching valve, the second vacuum material collecting tank is communicated with the vacuum pump through the second switching valve; when the first vacuum material collecting tank is communicated with the vacuum pump through the second switching valve, the second vacuum material collecting tank is communicated with the air flow pipeline through the first switching valve.

2. The system for collecting materials in claim 1, wherein the first vacuum material collecting tank and the second vacuum material collecting tank are provided with valves at the bottoms, and the valves are connected with a dust outlet.

3. The aggregate system of claim 1, wherein the first vacuum canister and the second vacuum canister are each provided with an expansion interface for connection with other gas flow conduits.

4. The aggregate system of claim 1, wherein the first vacuum collection tank and the second vacuum collection tank are each provided with a pressure relief valve.

5. The collection system according to claim 1, wherein the dust removal device comprises a plurality of dust removers, each of the dust removers being connected to the airflow conduit by a discharge valve.

6. The aggregate system of claim 1, wherein a first pressure regulating valve for regulating the pressure at the gas inlet is provided between the gas inlet and the dust removal device.

7. The material collecting system as claimed in claim 1, wherein a second pressure regulating valve is provided between the dust removing device and the vacuum material collecting device for regulating the pressure at the inlet of the vacuum material collecting device.

8. The collection system of claim 1, wherein the first vacuum canister and the second vacuum canister are each greater than 250mm in diameter.

9. The material collecting system of claim 1, wherein the first vacuum material collecting tank and the second vacuum material collecting tank are connected with the second switching valve through vacuum pipes, and the pipe diameters of the vacuum pipes are less than 25 mm.

10. A method of aggregating an aggregate system, comprising:

step S1, providing the aggregate system of claim 1;

step S2, operating the second switching valve to communicate the vacuum pump with the first vacuum material collecting tank and vacuumize the first vacuum material collecting tank;

step S3, opening the dust removal device, operating the first switching valve, communicating the first vacuum material collecting tank with the airflow pipeline, conveying compressed air to the airflow pipeline at the gas inlet, and starting dust collection by the first vacuum material collecting tank;

step S4, operating the second switching valve, communicating the vacuum pump with the second vacuum material collecting tank, and vacuumizing the second vacuum material collecting tank;

step S5, when the vacuum degree of the first vacuum collection tank is lower than the negative pressure required by dust collection and the vacuum degree of the second vacuum collection tank reaches the negative pressure required by dust collection, operating the first switching valve to disconnect the first vacuum collection tank from the airflow pipeline, communicating the second vacuum collection tank with the airflow pipeline, and starting dust collection by the second vacuum collection tank;

step S6, operating the second switching valve, communicating the vacuum pump with the first vacuum material collecting tank, and vacuumizing the first vacuum material collecting tank again;

step S7, when the vacuum degree of the second vacuum collection tank is lower than the negative pressure required by dust collection, operating the first switching valve to disconnect the second vacuum collection tank from the airflow pipeline, and connecting the first vacuum collection tank with the airflow pipeline, and starting dust collection again by the first vacuum collection tank;

step S8, judging whether the dust is discharged completely, if yes, ending the step; if not, steps S4-S7 are repeated.

Technical Field

The invention relates to the technical field of dust removal, in particular to an aggregate system and an aggregate method thereof.

Background

With the increasing environmental requirements, more and more industrial scenes need to use dust removal systems for dust collection and treatment. Generally, the floor space and height of the dust remover are greatly influenced by the processing air volume, and particularly the height of the dust remover easily exceeds the height of a standard container. If a plurality of smaller dust collectors are adopted to solve the height problem, the number of the dust collectors is increased, and at least one discharge valve is added to each dust collector, namely, a discharge point is added. For dust collection at multiple discharge points, there are three major types of treatment: the first is distributed treatment, namely each discharge point is independently bagged or collected in a cylinder; secondly, mechanical automatic collection, namely collecting the dust at each discharge point to one or two places by using mechanical equipment such as a screw conveyor, a conveyor belt, a lifter and the like; thirdly, the dust at each discharge point is collected in a centralized way by adopting a positive pressure or negative pressure pneumatic conveying system.

However, the above three types of processing methods have more or less problems. The dust after distributed treatment needs to be collected and transported manually, and the more the discharge points are, the larger the workload is. Especially when the dust removal modules are arranged one above the other with vertical space, so that the positions of the plurality of discharge points extend to different height planes, this can lead to a great workload for the operator. The mechanical equipment used in the mechanical automatic collection mode is complex, has a large number of transmission parts, bearings and mechanical structures, and is difficult to install and maintain when the use space is narrow. Especially when the discharge point needs to turn or lift to the centralized collection point, a plurality of devices are often used together to achieve the purpose of collection. The pneumatic conveying and collecting mode adopts positive pressure or negative pressure gas to blow (suck) the dust at a discharge point to a position for centralized collection, but no matter the positive pressure or negative pressure pneumatic conveying mode is adopted, the collection tank needs to continuously exhaust, and the discharged airflow carries the dust. If the airflow carrying the dust is directly discharged, secondary dust can be generated to pollute the environment again, and the dust can enter a negative pressure fan (or a pump) to cause equipment abrasion for negative pressure pneumatic transmission by direct discharge. Pneumatic conveying systems therefore require that the collection tank be equipped with a dust separator to filter the exiting air stream and separate the entrained dust from the air stream. Since the air volume required for pneumatic conveying is relatively large, the dust remover needs to be matched with the conveyed air volume, and the size of the dust remover is large. Even if the collection tank in the pneumatic conveying system is omitted and the dust collector is used directly to collect the discharged air flow, the dust collector with larger volume and larger filter element number is required, thereby increasing the occupied area and the manufacturing cost.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides an aggregate system and an aggregate method thereof, which have the advantages of simple structure, no space limitation, reduction of manual workload, convenience in maintenance, no connection with a dust collecting pipeline when the aggregate tank is vacuumized, and capability of greatly reducing the possibility of discharging dust along with air flow, so that a dust remover with large specification and complex structure is not required, and the occupied area and the manufacturing cost are reduced.

The invention provides a material collecting system, which comprises: a gas inlet configured to deliver compressed air to the gas flow duct; the dust removal device is connected with the gas inlet through the gas flow pipeline; the vacuum material collecting device is connected with the dust removing device through the airflow pipeline and comprises a first switching valve, the first switching valve is respectively connected with a first vacuum material collecting tank and a second vacuum material collecting tank, the first vacuum material collecting tank and the second vacuum material collecting tank are both connected with a second switching valve, the second switching valve is connected with a filter, the filter is connected with a vacuum pump, and the vacuum pump is connected with a gas outlet; when the first vacuum material collecting tank is communicated with the air flow pipeline through the first switching valve, the second vacuum material collecting tank is communicated with the vacuum pump through the second switching valve; when the first vacuum material collecting tank is communicated with the vacuum pump through the second switching valve, the second vacuum material collecting tank is communicated with the air flow pipeline through the first switching valve.

Furthermore, the bottoms of the first vacuum material collecting tank and the second vacuum material collecting tank are both provided with valves, and the valves are connected with a dust outlet.

Furthermore, the first vacuum material collecting tank and the second vacuum material collecting tank are both provided with expansion interfaces used for being connected with other air flow pipelines.

Further, the first vacuum material collecting tank and the second vacuum material collecting tank are both provided with pressure relief valves.

Furthermore, the dust removal device comprises a plurality of dust removers, and each dust remover is connected to the airflow pipeline through a discharge valve.

Further, a first pressure regulating valve for regulating the pressure at the gas inlet is arranged between the gas inlet and the dust removal device.

Further, a second pressure regulating valve for regulating the pressure at the inlet of the vacuum material collecting device is arranged between the dust removing device and the vacuum material collecting device.

Preferably, the diameters of the first vacuum material collecting tank and the second vacuum material collecting tank are both larger than 250 mm.

Preferably, the first vacuum material collecting tank and the second vacuum material collecting tank are connected with the second switching valve through a vacuum pipeline, and the pipe diameter of the vacuum pipeline is smaller than 25 mm.

The invention also provides an aggregating method of the aggregating system, which comprises the following steps:

step S1, providing the above-mentioned aggregate system.

And step S2, operating the second switching valve to enable the vacuum pump to be communicated with the first vacuum material collecting tank and vacuumize the first vacuum material collecting tank.

And step S3, opening the dust removal device, operating the first switching valve, communicating the first vacuum material collecting tank with the airflow pipeline, conveying compressed air to the airflow pipeline at the gas inlet, and starting to collect dust by the first vacuum material collecting tank.

And step S4, operating the second switching valve, communicating the vacuum pump with the second vacuum material collecting tank, and vacuumizing the second vacuum material collecting tank.

Step S5, when the vacuum degree of the first vacuum collection tank is lower than the negative pressure required by dust collection and the vacuum degree of the second vacuum collection tank reaches the negative pressure required by dust collection, operating the first switching valve to disconnect the first vacuum collection tank from the airflow pipeline, communicating the second vacuum collection tank with the airflow pipeline, and starting dust collection by the second vacuum collection tank.

And step S6, operating the second switching valve, communicating the vacuum pump with the first vacuum material collecting tank, and vacuumizing the first vacuum material collecting tank again.

And step S7, when the vacuum degree of the second vacuum collection tank is lower than the negative pressure required by dust collection, operating the first switching valve to disconnect the second vacuum collection tank from the airflow pipeline, connecting the first vacuum collection tank with the airflow pipeline, and starting dust collection again by the first vacuum collection tank.

Step S8, judging whether the dust is discharged completely, if yes, ending the step; if not, steps S4-S7 are repeated.

The dust collecting device collects the dust at a plurality of discharge points through the pipeline, has a simple structure, is not limited by space, reduces the manual workload and improves the maintenance convenience. In addition, the two vacuum collection tanks are arranged in the dust collection device and alternately vacuumize and collect dust, each vacuum collection tank runs through a cycle of vacuumizing, collecting and vacuumizing, so that gas does not need to be discharged immediately, the gas can be discharged at a smaller flow rate along with the vacuumizing process after an collecting period, and the switching valve cuts off the connection between the vacuum collection tank and the airflow pipeline, so that no airflow enters the vacuum collection tank during vacuumizing, the possibility of discharging the dust along with the airflow is greatly reduced, and the risk of secondary dust raising is also reduced. Even if the dust is discharged outside, a dust remover with high specification and a vacuum pump with high power are not needed, and the occupied area and the equipment cost are reduced. Meanwhile, the expansion interface is arranged on the vacuum collection tank, so that the flexibility is increased, and the modularization of the material collection system is facilitated.

Drawings

Fig. 1 is a schematic structural view of a collecting system according to a preferred embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the material collecting system according to a preferred embodiment of the present invention comprises a gas inlet 1, a dust removing device 2 for collecting dust, a vacuum material collecting device 3, a gas outlet 4 and a dust outlet 5 which are connected by a gas flow pipeline, wherein a first pressure regulating valve 6 is arranged between the gas inlet 1 and the dust removing device 2 for regulating the pressure at the gas inlet 1, and a second pressure regulating valve 7 is arranged between the dust removing device 2 and the vacuum material collecting device 3 for regulating the pressure at the inlet of the vacuum material collecting device 3.

The dust removing device 2 comprises two dust collectors 21, each of which is connected to the gas flow pipe through a discharge valve 22. When the discharge valve 22 is opened, the dust in the dust collector 21 enters the air flow pipe.

The vacuum material collecting device 3 comprises a first switching valve 31, a first vacuum material collecting tank 32, a second vacuum material collecting tank 33, a second switching valve 34, a filter 35 and a vacuum pump 36, wherein the first switching valve 31 is connected with the second pressure regulating valve 7 and is respectively connected with the first vacuum material collecting tank 32 and the second vacuum material collecting tank 33. The first vacuum material collecting tank 32 and the second vacuum material collecting tank 33 are both connected to the second switching valve 34, the second switching valve 34 is connected to the filter 35, the filter 35 is connected to the vacuum pump 36, and the vacuum pump 36 is connected to the gas outlet 4. In addition, the first vacuum material collecting tank 32 and the second vacuum material collecting tank 33 are each provided at the bottom thereof with a valve, which is connected to the dust outlet 5 to discharge the dust collected therein. The first vacuum material collecting tank 32 and the second vacuum material collecting tank 33 are also provided with a pressure release valve 37 and an expansion interface 38, and the pressure release valve 37 can timely release pressure during maintenance or accidental overpressure, so that the system safety is ensured, and meanwhile, the risk of dust escaping from the pressure release port can be reduced; the expansion interface 38 can be used for connecting additional airflow pipelines, connecting more dust remover discharge points, and connecting with other vacuum collection tanks in the vertical direction, which is equivalent to increasing the volume of the vacuum collection tanks, forming larger processing capacity, realizing modularization and increasing the flexibility of use. All parts in the vacuum aggregate device 3 are connected through pipelines. The diameters of the first vacuum material collecting tank 32 and the second vacuum material collecting tank 33 are both larger than 500mm, and the pipe diameters of the vacuum pipelines connected with the second switching valve 34 are both smaller than 15 mm.

It should be noted that the dust removing device 2 may include three or more dust removers, the specific number may be selected according to actual needs, and the plurality of dust removers may be arranged horizontally or vertically as needed. When the dust removing device 2 comprises more than two dust removers, only two vacuum collecting tanks or more than two vacuum collecting tanks can be arranged in the vacuum material collecting device 3 according to the dust amount discharged by actual needs. That is, when the amount of dust to be discharged is small, only two vacuum collection tanks may be provided; when the amount of dust that needs to be discharged is large, the number of vacuum collection canisters can be increased by the expansion interface 38. When multiple precipitators are arranged on different planes, vacuum collection canisters of different planes may also be connected together by the expansion joint 38.

The method for collecting the aggregate in the aggregate system is further described below.

Step S1, providing the above-mentioned aggregate system.

In step S2, the second switching valve 34 is operated to connect the vacuum pump to the first vacuum receiver tank 32, and the first vacuum receiver tank 32 is evacuated to bring the first vacuum receiver tank 32 close to the absolute vacuum (gauge pressure 98 Kpa).

Generally, the vacuum degree required by the operation of the vacuum collection tank is only larger than the vacuum degree (for example, gauge pressure of 20-30kpa) conveyed by negative pressure, but because the vacuum degree is continuously reduced in the operation process of the vacuum collection tank, the vacuum collection tank is pumped to be close to absolute vacuum in order to collect more dust after one-time vacuum pumping.

Step S3, the discharge valve 22 of the dust collector 21 is opened to let the dust enter the airflow pipeline, and the first switching valve 31 is operated to communicate the first vacuum material collecting tank 32 with the airflow pipeline, and the compressed air is delivered to the airflow pipeline at the gas inlet 1, and the first vacuum material collecting tank 32 starts to collect the dust.

At this time, the compressed air provides a positive pressure air flow, and the first vacuum material collecting tank 32 provides a negative pressure air flow, so that the dust moves along the air flow pipe toward the first vacuum material collecting tank 32 and enters the first vacuum material collecting tank 32 under the combined action of the compressed air and the first vacuum material collecting tank 32. Because the vacuum material collecting tank can slowly recover to the normal pressure along with the collection process of the dust, the inlet pressure of the vacuum material collecting tank needs to be controlled, the air quantity is reduced as far as possible under the condition of meeting the collection process requirement, and the pressure of the vacuum material collecting tank slowly rises. This can be achieved by adjusting the first and second pressure regulating valves 6, 7 so that the air flows at a steady pressure and velocity, achieving the collection objective while minimizing the waste of vacuum. Generally, the absolute values of the pressure at the gas inlet 1 and the pressure at the inlet of the vacuum aggregate unit 3 are approximately equal, ranging from the minimum pressure required for material suspension and transportation to the maximum vacuum level of the vacuum collection tank, which can be determined by adjustment.

In step S4, the second switching valve 34 is operated to disconnect the vacuum pump from the first vacuum material collecting tank 32 and connect the vacuum pump to the second vacuum material collecting tank 33, thereby evacuating the second vacuum material collecting tank 33.

It should be noted that steps S3 and S4 may be performed simultaneously, or step S4 may be performed first and then step S3 may be performed, that is, the discharge valve 22 may be opened, the first switching valve 31 may be operated, and the compressed air may be delivered when or during the evacuation of the second vacuum material collecting tank 33 is started.

In step S5, when the vacuum degree of the first vacuum collection tank 32 is lower than the negative pressure required for dust collection and the vacuum degree of the second vacuum collection tank 33 reaches the negative pressure required for dust collection, the first switching valve 31 is operated to disconnect the first vacuum collection tank 32 from the airflow pipeline, the second vacuum collection tank 33 is communicated with the airflow pipeline, and the second vacuum collection tank 33 starts to collect dust. At this time, the first vacuum collection tank 32 may discharge the collected dust through a valve at the bottom, or may discharge the dust after collecting a certain amount.

In step S5, the second switching valve 34 is operated to connect the vacuum pump to the first vacuum material collection tank 32, and the first vacuum material collection tank 32 is again evacuated. At this time, the first vacuum collection tank 32 is not in the process of collecting dust. Because the diameter (>250mm) of vacuum collection material jar is greater than the pipe diameter (<25mm) of the pipeline of evacuation far away for the air current flow in the evacuation process is low, thereby make the air current velocity of flow in the first vacuum collection jar 32 low, the low velocity of flow is not enough to bring a large amount of dust in the pipeline of vacuum pump that holds from the vacuum collection jar, simultaneously when vacuum collection material jar evacuation, and with the switch-on of air current pipeline, no air current gets into the vacuum collection material jar, the dust content in the air current that has also reduced the entering vacuum pump, consequently, the dust volume that gets into filter 35 at first vacuum collection material jar 32 rear end is less, make only need to set up the filter of less specification just can filter the dust of taking out. Meanwhile, as the vacuum degree in the first vacuum collection tank 32 is increased, the gas density therein is gradually reduced, and the dust carrying capacity of the gas flow is further reduced.

In step S6, when the vacuum degree of the second vacuum collection tank 33 is lower than the negative pressure required for dust collection, the first switching valve 31 is operated to disconnect the second vacuum collection tank 33 from the airflow duct, the first vacuum collection tank 32 is communicated with the airflow duct, and the first vacuum collection tank 32 starts to collect dust.

Step S7, judging whether the dust is discharged completely, if yes, ending the step; if not, steps S4-S6 are repeated.

The invention adopts the mode of intermittently vacuumizing and intermittently collecting dust by the two vacuum collecting tanks, namely, the two vacuum collecting tanks are not necessarily required to reach the vacuum degree required by the work to start the material collecting work. But any vacuum material collecting tank can carry out material collecting work when reaching the vacuum degree required by the work, so that the invention has smaller required filter and smaller required vacuum pump power compared with the traditional pneumatic conveying system. That is to say, the power of the vacuum pump only needs to meet the requirement that in the time of collecting dust in one vacuum collecting tank, the other vacuum collecting tank can be vacuumized, and the vacuum pump meeting the requirement of pneumatic transmission flow does not need to be continuously provided, so that the equipment cost is reduced.

The above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and various changes may be made in the above embodiments of the present invention. For example, the switching valves 31 and 34 may be three-way switching valves, or a group of other types of valves working together (the inlet and outlet pipes of the vacuum collection tank are respectively provided with valves); the vacuum pump 36 may be of various types such as a centrifugal type, a roots type, a screw type, a water ring type, etc. All simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application fall within the scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.