Continuous mixing station stock bin configured with online sampling device and sampling method
阅读说明：本技术 一种配置在线取样装置的连续式拌和站料仓与取样方法 (Continuous mixing station stock bin configured with online sampling device and sampling method ) 是由 刘洪海 姚能 李喆 宋文学 辛德军 邵先胜 于 2019-12-09 设计创作，主要内容包括：本发明公开了一种配置在线取样装置的连续式拌和站料仓与取样方法,连续式拌和站料仓包括传送带架、吊梁、导料斗、导料管和成品仓,所述传送带架倾斜放置,吊梁和传送带架螺栓连接,导料斗和吊梁铰接,导料斗上焊接有挡料板,导料斗下部是成品仓,成品仓一侧交接有导料管,导料管出料端与传送带架通过计量秤连接。取样方法和步骤：一、将称重传感器清零；二、输入取样重量值,即预设值；三、按下确认键进行自动取样,当累计流量达到预设值时,控制拉斗气缸将导料斗推回,取样完成。本发明结构简单,取样方便快捷,能实现在线自动取样。(The invention discloses a continuous mixing station storage bin with an online sampling device and a sampling method. The sampling method and the steps are as follows: firstly, resetting a weighing sensor; secondly, inputting a sampling weight value, namely a preset value; and thirdly, pressing a confirmation key to automatically sample, and controlling the drawer cylinder to push back the material guide hopper when the accumulated flow reaches a preset value, so that the sampling is finished. The invention has simple structure, convenient and quick sampling and can realize on-line automatic sampling.)
1. A continuous mixing station bin configured with an online sampling device is characterized by comprising a conveyor belt (2), a conveyor belt frame (3), a material guide hopper (5), a finished product bin (6) and a material guide pipe (11), wherein one end of the material guide pipe (11) penetrates into an inner cavity of the finished product bin (6) from one side of the finished product bin (6) in an inclined and upward manner, the material guide pipe (11) is hinged with the finished product bin (6), the other end of the material guide pipe (11) is connected with the conveyor belt frame (3) through a connecting structure, and a weighing sensor (13) is arranged on the connecting structure;
the upper end of the material guide hopper (5) is hinged with the tail end of the conveyor belt frame (3), the material guide hopper (5) is positioned at the discharge end of the conveyor belt (2) and can bear the discharge of the conveyor belt (2), and the mixture can be guided into the finished product bin (6) through the discharge hole of the material guide hopper (5); the lower end of the material guide hopper (5) is connected with the conveyor belt frame (3) through a pull hopper cylinder (8), and the pull hopper cylinder (8) can adjust the direction of the discharge hole of the material guide hopper (5) to enable the material in the material guide hopper (5) to enter the material guide pipe (11).
2. The bunker of the continuous mixing station equipped with the on-line sampling device as claimed in claim 1, wherein the first hanger (25) is fixedly installed on the conveyor belt frame (3), one end of the drawer cylinder (8) is hinged with the first hanger (25), and the other end of the drawer cylinder (8) is hinged with the material guide hopper (5).
3. The bunker of the continuous mixing station configured with the on-line sampling device as claimed in claim 1, wherein a second hanger (12) is fixedly installed on the conveyor belt frame (3), the upper end and the lower end of the weighing sensor (13) are respectively connected with an upper pull rod (56) and a lower pull rod (58), the upper end of the upper pull rod (56) is hinged with the second hanger (12), and the lower end of the lower pull rod (58) is hinged with the guide pipe (11).
4. The bunker of continuous mixing station equipped with on-line sampling device as claimed in claim 3, wherein the second hanger (12) is connected with a screw rod (51) capable of being adjusted up and down, and the upper end of the upper pull rod (56) is hinged with the lower end of the screw rod (51).
5. The storage bin of the continuous mixing station configured with the online sampling device as claimed in claim 1, wherein the end of the conveyor belt frame (3) is connected with a hanging beam (7), the upper end of the material guide hopper (5) is hinged with the hanging beam (7), and the hanging beam (7) is provided with an avoiding notch (7-1) for avoiding the edge of the material guide hopper (5).
6. The storage bin of a continuous mixing station with an online sampling device as claimed in claim 1, wherein the guide hopper (5) is provided at its upper end with a striker plate (4) which is located opposite to the discharge side of the conveyor belt (2).
7. A method for sampling a silo of a continuous mixing station according to any one of claims 1 to 6, characterized in that it comprises the following steps:
the discharge of the conveyor belt 2 enters a material guide hopper (5) and enters a finished product bin (6) from a discharge hole of the material guide hopper (5);
when sampling is needed, a material guide hopper (5) is driven by a hopper pulling cylinder (8), the direction of a discharge hole of the material guide hopper (5) is adjusted, the material guide hopper (5) guides the mixture into a material guide pipe (11), sampling is started, and the mass of the mixture passing through the material guide pipe (11) is measured by a weighing sensor 13 in the sampling process;
when the sampling amount reaches a preset value, the material guide hopper (5) is driven by the pull hopper cylinder (8), so that the discharge hole of the material guide hopper (5) enters the finished product bin (6).
8. A method for the on-line automatic sampling of a mix in a continuous mixing plant according to claim 7, characterized in that the amount sampled is the cumulative flow m of the mix2Meter, cumulative flow m2Calculated by the following formula:
wherein m is2The unit is kg for the accumulated flow of the mixture; t is the sampling time in units of s; k is a calibration coefficient and is dimensionless; m is the instantaneous mass of the mixture in the material guide pipe, and the unit iskg; l is the length of the material guide pipe and the unit is m; v is the average speed of the pipeline mixture in the sampling process, and the unit is m/s; f is the value of the weighing sensor and has the unit of N; g is the acceleration of gravity; l2The unit is m, which is the horizontal distance from a weighing sensor to the hinged point of the material guide pipe and the finished product hopper; l1The horizontal distance from the mass center of the mixture in the material guide pipe to the hinged joint of the material guide pipe and the finished product hopper is m; q is the flow of the mixture conveyed by the conveyer belt, and the unit is t/h; rho is the density of the mixture and has the unit of g/cm3(ii) a S is the area of the cross section of the material guide pipe, and the unit is m2。
Technical Field
The invention belongs to the field of road construction, and particularly relates to a continuous mixing station bin with an online sampling device and a sampling method.
Background
In road construction projects in China, continuous stirring equipment is adopted for producing some mixed materials, and the mixed materials need to be sampled regularly or irregularly in order to check various indexes of the mixed materials. Because sampling is very difficult in the production process of a continuous mixing station, the current main sampling mode is to manually sample on a transport vehicle or shut down a mixing device to manually intercept a certain length of mixture on a conveyor belt. The sampling in the former mode is time-consuming and labor-consuming, has potential safety hazards, and the mixture after loading has the phenomenon of material segregation with a fine upper part and a coarse lower part, so that a representative sample is difficult to obtain; the latter sampling mode equipment must be shut down, affects continuous production of the mixture and cannot realize on-line sampling.
Disclosure of Invention
The invention aims to solve the technical problem of providing a continuous mixing station stock bin with an online sampling device and a sampling method aiming at the defects of the prior method.
The technical scheme adopted by the invention is as follows:
a continuous mixing station bin configured with an online sampling device comprises a conveyor belt, a conveyor belt frame, a material guide hopper, a finished product bin and a material guide pipe, wherein one end of the material guide pipe obliquely penetrates into an inner cavity of the finished product bin from one side of the finished product bin upwards, the material guide pipe is hinged with the finished product bin, the other end of the material guide pipe is connected with the conveyor belt frame through a connecting structure, and a weighing sensor is arranged on the connecting structure;
the upper end of the material guide hopper is hinged with the tail end of the conveyor belt frame, the material guide hopper is positioned at the discharge end of the conveyor belt and can bear the discharge of the conveyor belt, and the discharge port of the material guide hopper can guide the mixed materials into the finished product bin; the lower end of the material guide hopper is connected with the conveyor belt frame through a pull hopper cylinder, and the pull hopper cylinder can adjust the direction of a discharge port of the material guide hopper so that materials in the material guide hopper enter the material guide pipe.
The conveyer belt frame is fixedly provided with a first hanging bracket, one end of the pull bucket cylinder is hinged with the first hanging bracket, and the other end of the pull bucket cylinder is hinged with the material guide bucket.
The conveyer belt frame is fixedly provided with a second hanging bracket, the upper end and the lower end of the weighing sensor are respectively connected with an upper pull rod and a lower pull rod, the upper end of the upper pull rod is hinged with the second hanging bracket, and the lower end of the lower pull rod is hinged with the material guide pipe.
The second hanger is connected with a screw rod capable of adjusting the position up and down, and the upper end of the upper pull rod is hinged with the lower end of the screw rod.
The tail end of the conveyor belt frame is connected with a hanging beam, the upper end of the material guide hopper is hinged with the hanging beam, and an avoiding notch used for avoiding the edge of the material guide hopper is formed in the hanging beam.
The upper end of the material guide hopper is provided with a material baffle plate which is positioned at a position opposite to the discharge side of the conveying belt.
The invention relates to a sampling method of a continuous mixing station storage bin, which comprises the following steps:
the discharge of the transmission belt enters a material guide hopper and enters a finished product bin from a discharge hole of the material guide hopper;
when sampling is needed, a pulling bucket cylinder is used for driving a material guide bucket, the direction of a material outlet of the material guide bucket is adjusted, the material guide bucket guides the mixture into a material guide pipe, sampling is started, and the mass of the mixture passing through the material guide pipe is measured by a weighing sensor in the sampling process;
and when the sampling amount reaches a preset value, the material guide hopper is driven by the pull hopper cylinder, so that the discharge port of the material guide hopper enters the finished product bin.
The sampling amount is the cumulative flow m of the mixture2Meter, cumulative flow m2Calculated by the following formula:
wherein m is2The unit is kg for the accumulated flow of the mixture; t is the sampling time in units of s; k is a calibration coefficient and is dimensionless; m is the instantaneous mass of the mixture in the material guide pipe, and the unit is kg; l is the length of the material guide pipe and the unit is m; v is the average speed of the pipeline mixture in the sampling process, and the unit is m/s; f is the value of the weighing sensor and has the unit of N; g is the acceleration of gravity; l2The unit is m, which is the horizontal distance from a weighing sensor to the hinged point of the material guide pipe and the finished product hopper; l1The horizontal distance from the mass center of the mixture in the material guide pipe to the hinged joint of the material guide pipe and the finished product hopper is m; q is the flow of the mixture conveyed by the conveyer belt, and the unit is t/h; rho is the density of the mixture and has the unit of g/cm3(ii) a S is the area of the cross section of the material guide pipe, and the unit is m2。
The invention has the following beneficial effects:
the upper end of the guide hopper in the continuous mixing station material bin provided with the online sampling device is hinged with the tail end of the conveyor belt frame, the guide hopper is positioned at the discharge end of the conveyor belt and can bear the discharge of the conveyor belt, the lower end of the guide hopper is connected with the conveyor belt frame through the pull hopper cylinder, and the pull hopper cylinder can adjust the direction of the discharge port of the guide hopper to enable the material in the guide hopper to enter the guide pipe. Through setting up weighing sensor, can utilize the data accuracy control volume of sampling that weighing sensor surveyed, realize quantitative sampling, and the representativeness is good.
Furthermore, a screw rod capable of adjusting the position up and down is connected to the second hanging bracket, and the included angle between the material guide pipe and the horizontal direction can be adjusted by using the screw rod, so that the material guide pipe can be stacked conveniently.
Furthermore, the hanging beam is provided with an avoiding notch for avoiding the edge of the material guide hopper, so that the hanging beam and the material guide hopper can be prevented from position interference.
Furthermore, the mixture on the conveying belt can be prevented from directly falling outside the material guide hopper through the material baffle plate, and the inaccuracy of statistics in the process of calculating the sampling amount is prevented.
According to the sampling method, when sampling is needed, the pull hopper cylinder is used for driving the material guide hopper, the direction of the material guide hopper discharge port is adjusted, the material guide hopper guides the mixture into the material guide pipe, sampling is started, the weighing sensor is used for measuring the mass of the mixture passing through the material guide pipe in the sampling process, and after the sampling amount reaches a preset value, the pull hopper cylinder is used for driving the material guide hopper to enable the material guide hopper discharge port to enter the finished product bin.
Drawings
Fig. 1 is a front view of the present invention.
FIG. 2 is a global schematic of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a partially enlarged view of a portion B in fig. 2.
Fig. 5 is a partially enlarged view of a portion E in fig. 2.
FIG. 6 is an enlarged view of a portion of FIG. 2 at D
Fig. 7 is a partially enlarged view of a portion F in fig. 2.
Fig. 8 is a global schematic diagram of fig. 8.
Fig. 9 is a partially enlarged view of a portion C in fig. 8.
Fig. 10 is a partially enlarged view of fig. 8 at G.
Fig. 11 is a weighing diagram according to the present invention.
In the figure: 1-a driving roller; 2, a conveyor belt; 3-a conveyor belt rack; 4, a material baffle plate; 5, a material guide hopper; 6, a finished product bin; 7, hanging a beam; 7-1-avoiding the notch; 8-a drawer cylinder; 9-sliding door cylinder; 10-a bin gate; 11-a material guide pipe; 12-a second hanger; 13-a load cell; 14-hanging beam fixing plate; 15-L-shaped plate; 16-bolt; 17-triangular connecting plates; 18-left fixed plate; 19-lifting lugs; 20-a pin shaft; 21-pin shaft seat; 22-right fixed plate; 23-a bearing seat; 24-bolt; 25 — a first hanger; 26-upper pin shaft seat; 27-a pin shaft; 28-lower pin shaft seat; 29-fixing plate; 30-end plate of cylinder of drawer; 31-a drawer cylinder; 32-extension rod of drawer cylinder; 34-a protruding plate; 35-a set square; 36-pin shaft seat; 37-pin shaft; 38-hanger plate; 39-fixing plate; 40-pin shaft seat; 41-pin shaft; 42-a sleeve; 43-a connecting plate; 44, fixing a plate; 45-sliding door cylinder end plate; 46-sliding door cylinder; 47-sliding door cylinder extension bar; 48, a pin shaft; 49-pin shaft seat; 50, fixing a plate; 51-a screw; 52, fixing a plate; 53-pin shaft seat; 54-a pin shaft; 55-a connecting plate; 56-upper pull rod; 57-a load cell; 58-lower pull rod; 59-connecting plate; 60-a pin shaft; 61-pin shaft seat; 62, fixing a plate; 63-a material separating plate; 64, fixing a plate; 65-pin shaft seat; 66-a pin shaft; 67-L-shaped connecting plates; 68-a triangular plate; 69, fixing a plate; 70-pin shaft seat; 71-a pin shaft; 72-pin shaft seat; 73-fixed plate.
Detailed Description
The invention is further described below with reference to the figures and examples.
Referring to fig. 1, 2 and 8, the bin of the continuous mixing station with the online sampling device of the present invention includes a conveyor belt 2, a
Referring to fig. 4, a
Referring to fig. 1 and 2, a
Referring to fig. 7, a screw 51 capable of being moved up and down is connected to the
Referring to fig. 1 to 3, as a preferred embodiment of the present invention, a
Referring to fig. 1, 2 and 8, as a preferred embodiment of the present invention, a
Referring to fig. 1 and 8, the sampling method of the continuous mixing station bunker according to the present invention includes the following processes:
the discharge of the conveyor belt 2 enters a
when sampling is needed, the
when the sampling amount reaches a preset value, the
As a preferred embodiment of the invention, the sampling amount is calculated as the cumulative flow m of the mixture2Meter, cumulative flow m2Calculated by the following formula:
wherein m is2The unit is kg for the accumulated flow of the mixture; t is the sampling time in units of s; k is a calibration coefficient and is dimensionless; m is the instantaneous mass of the mixture in the material guide pipe, and the unit is kg; l is the length of the material guide pipe and the unit is m; v is the average speed of the pipeline mixture in the sampling process, and the unit is m/s; f is the value of the weighing sensor and has the unit of N; g is the acceleration of gravity; l2The unit is m, which is the horizontal distance from a weighing sensor to the hinged point of the material guide pipe and the finished product hopper; l1The horizontal distance from the mass center of the mixture in the material guide pipe to the hinged joint of the material guide pipe and the finished product hopper is m; q is the flow of the mixture conveyed by the conveyer belt, and the unit is t/h; rho is the density of the mixture and has the unit of g/cm3(ii) a S is the area of the cross section of the material guide pipe, and the unit is m2。
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