CN115676158B - Anti-blocking device and anti-blocking method for quantitative feeder - Google Patents
Anti-blocking device and anti-blocking method for quantitative feederInfo
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- CN115676158B CN115676158B CN202211315151.7A CN202211315151A CN115676158B CN 115676158 B CN115676158 B CN 115676158B CN 202211315151 A CN202211315151 A CN 202211315151A CN 115676158 B CN115676158 B CN 115676158B
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- pressure air
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Abstract
本发明公开了一种定量给料机防堵塞装置，包括沿竖直方向设置的空心连杆，连杆的下端设有承力锥形板，连杆伸入定量给料机仓体中，连杆的上端连接驱动组件，连杆的外壁上安装有拉力传感器，连杆的中心处安装有气管，气管的一端伸入连杆内部，气管的另一端连接有空压机。本发明还公开了一种定量给料机防堵塞方法，解决了现有定量给料机存在的堵塞问题，提高了系统自动化控制，减少了人工操作。
The present invention discloses an anti-clogging device for a quantitative feeder. The device comprises a hollow connecting rod arranged in a vertical direction, a load-bearing tapered plate provided at the lower end of the connecting rod, the connecting rod extending into the quantitative feeder chamber, the upper end of the connecting rod connected to a drive assembly, a tension sensor mounted on the outer wall of the connecting rod, and an air pipe mounted at the center of the connecting rod. One end of the air pipe extends into the interior of the connecting rod, and the other end of the air pipe is connected to an air compressor. The present invention also discloses an anti-clogging method for a quantitative feeder, which solves the clogging problem existing in conventional quantitative feeders, improves system automation control, and reduces manual operation.
Description
Technical Field
The invention belongs to the technical field of anti-blocking control of coal conveying equipment, relates to an anti-blocking device of a quantitative feeder, and further relates to an anti-blocking method of the quantitative feeder.
Background
The quantitative feeder is a coal supply device in front of the feed inlet of the rod mill, can quantitatively and continuously transport raw coal to the rod mill, and plays an important role in the whole pulping process production link. In the actual operation process, the coal above the quantitative feeder generates negligent coal flow due to the existence of coal particle agglomeration, and the quantitative feeder is often blocked, so that the normal operation of the whole pulping equipment system is affected. In the operation process of the quantitative feeder, on-site workers are required to check whether coal flow blockage occurs for a long time, so that manpower is restrained. And when the coal blockage happens, the whole production line operation is required to be stopped, the production efficiency is greatly influenced, meanwhile, the blockage part at the bottom of the bin cannot be cleaned outside the bin, the bin is required to be cleaned manually, and the blockage cleaning process is difficult.
Disclosure of Invention
The invention aims to provide an anti-blocking device of a quantitative feeder, which solves the blocking problem of the existing quantitative feeder, improves the automatic control of a system and reduces the manual operation.
It is another object of the invention to provide a method of preventing clogging in a dosing machine.
The first technical scheme adopted by the invention is that the anti-blocking device of the quantitative feeder comprises a hollow connecting rod arranged along the vertical direction, wherein a bearing conical plate is arranged at the lower end of the connecting rod, the connecting rod stretches into a bin body of the quantitative feeder, the upper end of the connecting rod is connected with a driving assembly, a tension sensor is arranged on the outer wall of the connecting rod, an air pipe is arranged at the center of the connecting rod, one end of the air pipe stretches into the connecting rod, and the other end of the air pipe is connected with an air compressor.
The first technical scheme of the invention is characterized in that:
The driving assembly comprises a gear box, the connecting rod penetrates through the gear box, a straight-tooth rack is arranged on the gear box and fixed on the outer wall of the connecting rod, a limiting block is connected to the straight-tooth rack, the limiting block is perpendicular to the straight-tooth rack, the straight-tooth rack is meshed with a straight gear, and the straight gear is connected with the motor through a motor shaft.
A limiting groove is formed in the gear box, and the limiting block slides in the limiting groove.
The outer side wall of the bin body of the quantitative feeder is provided with a bin wall vibrator.
The air pipe stretches into the opposite two sides of one end of the connecting rod and is sequentially provided with a plurality of pressure air nozzles from top to bottom, and an outlet of each pressure air nozzle is provided with an electromagnetic valve.
The number of the pressure air nozzles is three, the number of each group of the pressure air nozzles is two, and the two pressure air nozzles are respectively two pressure air nozzles a, two pressure air nozzles b and two pressure air nozzles c, wherein an electromagnetic valve a is arranged at the outlet of the pressure air nozzle a, an electromagnetic valve b is arranged at the outlet of the pressure air nozzle b, and an electromagnetic valve c is arranged at the outlet of the pressure air nozzle c.
The motor is connected with the motor controller, the electromagnetic valve a, the electromagnetic valve b and the electromagnetic valve c are all connected with the inflation controller, the tension sensor is connected with the tension feedback controller, the bin wall vibrator is connected with the bin wall vibrator controller, and the motor controller, the inflation controller, the tension feedback controller and the bin wall vibrator controller are all connected with the main controller.
The second technical scheme adopted by the invention is that the anti-blocking method of the quantitative feeder specifically comprises the following steps:
Step 1, during normal operation of the quantitative feeder, coal flow impacts a bearing conical plate in the falling process, impact force is transmitted to a tension sensor through a connecting rod and then fed back to a tension feedback controller, and step 2 is carried out;
step 2, the tension feedback controller judges whether a blocking situation occurs, and if so, the step 3 is entered;
step 3, the main controller sends an instruction to the bin wall vibrator controller, and the bin wall vibrator controller starts the bin wall vibrator for a seconds and then enters step 4;
step 4, the tension feedback controller judges whether the blocking condition still exists, if so, the step 5 is entered, and if not, the step 9 is entered;
Step 5, the main controller sends a command to the air flushing controller, the air flushing controller opens the electromagnetic valve a of the pressure air nozzle a, and air is used for blowing away the blocked coal flow, and the air blowing duration is b seconds for one time;
step 6, the tension feedback controller judges whether the blocking condition still exists, if so, the step 7 is entered, and if not, the step 9 is entered;
Step 7, the main controller sends a command to the air flushing controller, the air flushing controller opens the electromagnetic valve b of the middle pressure air nozzle b, the air flushing duration is b seconds for one time, and the step 8 is entered;
step 8, if the blockage situation still exists, the main controller sends a command to the air flushing controller, the air flushing controller opens the electromagnetic valve of the top pressure air nozzle c to finish blockage removal, and step 9 is entered;
And 9, the main controller sends an instruction to the bin wall vibrator controller, and the bin wall vibrator controller closes the bin wall vibrator.
The second technical scheme of the invention is characterized in that:
The specific method for judging blockage by the tension feedback controller is that the normal tension value is set as P Positive direction , and the blockage factor is set According to the size of coal flowThe value is between 10% and 20%, the tension sensor collects the tension value P once every m seconds, n groups of tension data P 1、P2、...、Pn are collected for m multiplied by n seconds as a detection period, and the average tension value P Flat plate in one detection period is calculated according to the following formula:
When coal flow blockage occurs in the bin body of the quantitative feeder, the coal flow accumulated by the bin bottom blockage gradually submerges the force-bearing conical plate, when the coal flow at the upper part continuously falls, the impact force applied to the force-bearing conical plate at the moment is reduced, the tension value P fed back to the tension sensor is smaller than the normal tension value P Positive direction monitored by the tension sensor, and a determination value is introduced To calculate the blocking factorAnd setting the blocking factorThe difference is calculated as follows:
the main controller is used for controlling the monitoring period according to the judgment value The coal flow blockage at the bottom of the bin is judged according to the size, and each detection period is taken as a judgment valueIn this case, it is determined that the coal flow is blocked.
The anti-blocking device for the quantitative feeder has the advantages that the anti-blocking device for the quantitative feeder can monitor the blocking condition of coal flow in a bin of the quantitative feeder in real time, when the coal flow is blocked, the control system can automatically start the bin wall vibrator, and the air charging system solves the blocking problem and ensures the normal operation of the whole pulping equipment system. The invention has high degree of automation, can replace manual work to automatically realize the blockage removal, and effectively reduces labor cost.
Drawings
FIG. 1 is a schematic diagram of the anti-clogging device of the dosing machine of the present invention;
FIG. 2 is a schematic view of the structure of the inside of a gear box in the anti-clogging device of the dosing machine of the present invention;
FIG. 3 is a schematic diagram of the connection structure of the air pipe, the pressure air nozzle and the electromagnetic valve in the connecting rod of the anti-blocking device of the quantitative feeder;
Fig. 4 is a flow chart of the anti-clogging method of the dosing machine of the present invention.
In the figure, 1, a belt conveyor, 2, a force-bearing conical plate, 3, a dosing machine bin body, 4, a connecting rod, 5, a connector, 6, a spur rack, 7, a gear box, 8, a spur gear, 9, a motor shaft, 10, a motor, 11, a tension sensor, 13, a motor controller, 14, a gas charging controller, 15, a tension feedback controller, 16, a bin wall vibrator controller, 17, an air compressor, 18, a bin wall vibrator, 19, a limiting block, 20, a limiting groove, 21, an air pipe, 22-1, a pressure air nozzle a,22-2, a pressure air nozzle b,22-3, a pressure air nozzle b,23-1, an electromagnetic valve a,23-2, an electromagnetic valve b,23-3 and an electromagnetic valve c.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention relates to an anti-blocking device of a quantitative feeder, which is shown in fig. 1 and comprises a force-bearing conical plate 2 arranged in a bin body 3 of the quantitative feeder, wherein the force-bearing conical plate 2 is connected with the lower end of a hollow connecting rod 4, the upper end of the connecting rod 4 is in threaded connection with a spur rack 6 through a connector 5, the spur rack 6 is meshed with a spur gear 8, the spur rack 6 and the spur gear 8 are arranged in a gear box 7, a limiting groove 20 is arranged in the gear box 7, a limiting block 19 is connected to the spur rack 6, the limiting block 19 is vertically arranged with the spur rack 6, the limiting block 19 can slide in the limiting groove 20, and the spur gear 8 is connected with a motor 10 through a motor shaft 9. A tension sensor 11 is arranged on the upper end side wall of the connecting rod 4.
The outer side wall of the quantitative feeder bin body 3 is provided with a bin wall vibrator 18, and the lower part of the feeder bin body 3 is provided with a belt conveyor 1.
As shown in FIG. 3, an air pipe 21 is arranged in the connecting rod 4, one end of the air pipe 21 extends into the connecting rod 4, the other end of the air pipe 21 is connected with an air compressor 17, three groups of pressure air nozzles (two pressure air nozzles in each group) are sequentially arranged on two opposite sides of one end of the air pipe 21 extending into the connecting rod 4 from top to bottom, the two groups of pressure air nozzles are respectively two pressure air nozzles a22-1, two pressure air nozzles b22-2 and two pressure air nozzles c22-3, an electromagnetic valve a23-1 is arranged at the outlet of the pressure air nozzle a22-1, an electromagnetic valve b23-2 is arranged at the outlet of the pressure air nozzle b22-2, and an electromagnetic valve c23-3 is arranged at the outlet of the pressure air nozzle c 22-3.
The motor controller 13 is electrically connected with the motor 10 to control the motor 10 to act, the flushing controller 14 controls three groups of electromagnetic valves (electromagnetic valve a23-1, electromagnetic valve b23-2 and electromagnetic valve c 23-3), the tension feedback controller 15 collects data of the tension sensor 11 and transmits the data to the main controller 12, and the bin wall vibrator controller 16 is electrically connected with the bin wall vibrator 18 to control the action.
The motor controller 13, the air flushing controller 14, the tension feedback controller 15 and the bin wall vibrator controller 16 are all connected with the main controller.
The motor controller 13 instructs the motor 10 to act, and then the force-bearing conical plate 2 is adjusted in height through the meshing and matching of the spur rack 6 and the spur gear 8.
The bearing conical plate 2 is in an inverted funnel shape and is arranged at the bottom end of the connecting rod 4, and the included angle between the inclined plane and the horizontal plane is 45 degrees.
The anti-blocking method of the quantitative feeder is shown in fig. 4, and the specific control method comprises the following steps:
step 1, during normal operation of the quantitative feeder, the coal flow continuously impacts the bearing conical plate 2 in the falling process, impact force is transmitted to the tension sensor 11 through the connecting rod 4 and then is fed back to the tension feedback controller 15, and the step 2 is entered;
Step 2, the tension feedback controller 15 judges whether a blocking situation occurs, and if so, the step 3 is entered;
Step 3, the main controller sends an instruction to the bin wall vibrator controller 16, the bin wall vibrator controller 16 starts the bin wall vibrator 18, and after a seconds, the step 4 is entered;
Step 4, the tension feedback controller 15 judges whether the blocking condition still exists, if so, the step 5 is entered, and if not, the step 9 is entered;
Step 5, the main controller sends an instruction to the air charging controller 14, the air charging controller 14 opens the electromagnetic valve a23-1 of the pressure air nozzle a22-1, and high-pressure air is used for blowing away the blocked coal flow, and the air charging duration is b seconds for one time;
Step 6, the tension feedback controller 15 judges whether the blocking condition still exists, if so, the step 7 is entered, and if not, the step 9 is entered;
step 7, the main controller sends an instruction to the air charging controller 14, the air charging controller 14 opens the electromagnetic valve b23-2 of the middle pressure air nozzle b22-2, the air charging duration b seconds is one time, and step 8 is entered;
Step 8, if the blockage situation still exists, the main controller sends a command to the air charging controller 14, the air charging controller 14 opens the electromagnetic valve of the top pressure air nozzle c22-3, the blockage is cleared, and step 9 is entered;
step 9, the main controller sends an instruction to the wall vibrator controller 16, and the wall vibrator controller 16 turns off the wall vibrator 18.
The specific method for judging the blockage by the tension feedback controller 15 is that the normal tension value is set as P Positive direction , and the blockage factor is setAccording to the size of coal flowThe value is between 10 and 20 percent. The tension sensor 11 collects the tension value P every m seconds, and n groups of tension data P 1、P2、...、Pn are collected for m×n seconds as a detection period. The average tension value P Flat plate in a detection period is calculated as follows:
When coal flow blockage occurs in the bin body 3 of the quantitative feeder, coal flow accumulated by the bin bottom blockage gradually submerges the force-bearing conical plate 2, when the coal flow at the upper part continuously falls, the impact force applied to the force-bearing conical plate 2 at the moment is greatly reduced, and the tension value P fed back to the tension sensor 11 by the tension sensor 11 is smaller than the normal tension value P Positive direction monitored by the tension sensor 11. Introduction of calculated blocking factor Introducing a determination valueTo calculate the blocking factorAnd setting the blocking factorThe difference is calculated as follows:
the main controller is used for controlling the monitoring period according to the judgment value And judging the size of the bin bottom to cause coal flow blockage. Each detection period is used as a determination valueIn this case, it is determined that the coal flow is blocked.
The invention can set different bin bottom coal flow safety accumulation heights (the height of the bearing conical plate 2) according to different coal flow sizes. The specific method for adjusting the safe accumulated height of the coal flow at the bottom of the bin comprises the steps that a main controller instructs a motor controller 13 to start a motor 10, the motor 10 drives a spur gear 8 to rotate through a motor shaft 9, and the spur gear rack 6 converts rotary motion into linear motion in the vertical direction. The straight tooth rack 6 drives the connecting rod 4 and the bearing conical plate 2 to be adjusted in the height of the limiting groove 20, so that the height of the bearing conical plate 2 is adjusted.
Examples
Taking the production amount of the quantitative feeder as 100m 3/h,200 m3/h as an example, when the production amount is 200m 3/h, the coal flow is large, the accumulation of a small amount of coal flow at the bottom of the bin can generate blocking risk, at the moment, the main controller instructs the motor controller 13 to start the motor 10 to adjust the height of the bearing conical plate 2 to be 20cm away from the bottom of the bin, when the production amount is reduced to 100m 3/h, the safety coal flow allowed to be accumulated at the bottom of the bin is increased, and at the moment, the main controller instructs the motor controller 13 to start the motor 10 to adjust the height of the bearing conical plate 2 to be 30cm away from the bottom of the bin.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211315151.7A CN115676158B (en) | 2022-10-26 | 2022-10-26 | Anti-blocking device and anti-blocking method for quantitative feeder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211315151.7A CN115676158B (en) | 2022-10-26 | 2022-10-26 | Anti-blocking device and anti-blocking method for quantitative feeder |
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| CN115676158A CN115676158A (en) | 2023-02-03 |
| CN115676158B true CN115676158B (en) | 2025-09-23 |
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| CN202211315151.7A Active CN115676158B (en) | 2022-10-26 | 2022-10-26 | Anti-blocking device and anti-blocking method for quantitative feeder |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20240173166A (en) * | 2023-06-02 | 2024-12-10 | 주식회사 엘지에너지솔루션 | System for transporting electrode raw materials |
| CN117566315B (en) * | 2023-11-13 | 2025-06-10 | 华能济宁运河发电有限公司 | A kind of automatic anti-blocking device of drop pipe and control method thereof |
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| CN208344981U (en) * | 2018-05-26 | 2019-01-08 | 焦作市远润环保科技有限公司 | A kind of anti-blocking feed bin |
| CN210913769U (en) * | 2019-11-20 | 2020-07-03 | 故城山水水泥有限公司 | Material unloader with automatic mediation function |
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| US6742679B2 (en) * | 2002-06-03 | 2004-06-01 | Albert Ray Martin | Drop plate feeder |
| CN204872247U (en) * | 2015-06-19 | 2015-12-16 | 贵州安凯达实业股份有限公司 | Prevent whitewashed feeding storehouse of lime that blocks up |
| LU100063B1 (en) * | 2017-02-02 | 2018-09-27 | Wurth Paul Sa | Method of charging a coke oven |
| CN208683586U (en) * | 2018-08-20 | 2019-04-02 | 秦皇岛华电测控设备有限公司 | Coal bunker total management system |
| CN212502919U (en) * | 2020-06-23 | 2021-02-09 | 北京鼎望科技有限公司 | Weight monitoring device for granular materials |
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- 2022-10-26 CN CN202211315151.7A patent/CN115676158B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208344981U (en) * | 2018-05-26 | 2019-01-08 | 焦作市远润环保科技有限公司 | A kind of anti-blocking feed bin |
| CN210913769U (en) * | 2019-11-20 | 2020-07-03 | 故城山水水泥有限公司 | Material unloader with automatic mediation function |
| CN211168247U (en) * | 2019-11-20 | 2020-08-04 | 山东研维自动化科技有限公司 | Device for detecting arching and arch breaking of material |
| CN212048909U (en) * | 2020-03-12 | 2020-12-01 | 王浩栋 | Coal bunker position in storehouse real-time supervision device with prevent stifled function |
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| CN115676158A (en) | 2023-02-03 |
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