CN216004211U - Automatic coal chute coal blockage early warning device based on mechanical sampling - Google Patents
Automatic coal chute coal blockage early warning device based on mechanical sampling Download PDFInfo
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- CN216004211U CN216004211U CN202122059883.1U CN202122059883U CN216004211U CN 216004211 U CN216004211 U CN 216004211U CN 202122059883 U CN202122059883 U CN 202122059883U CN 216004211 U CN216004211 U CN 216004211U
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Abstract
The utility model discloses a coal chute coal blockage automatic early warning device based on mechanical sampling, which comprises a movable door, a movable door and a signal processing unit, wherein the movable door is arranged on a side wall detection port of a coal chute and is used for detecting whether the coal chute is blocked or not; the movable door comprises a movable door arranged at the coal drop pipe detection port and a fixed door arranged on the outer side of the movable door, and an inclined door is obliquely arranged between the movable door and the fixed door; the top end of one side of the inclined door, which is far away from the fixed door, is provided with a limit switch for collecting the movement angle of the inclined door; the limit switch is connected with a control switch used for sending out an early warning signal through a lead, and the control switch is connected with an alarm. The utility model has simple structure and reasonable design, is used for detecting the blockage of the coal dropping pipe of the mechanical sampling and preparing device, can provide timely information for operators, adopts modes of replacing a sampling scheme and the like, achieves the aims of sampling without interruption and improving the sampling representativeness, thereby avoiding the accumulation of coal samples and the damage of a conveyor belt caused by the coal blockage.
Description
Technical Field
The utility model relates to the technical field of coal sample sampling, in particular to a coal chute coal blockage automatic early warning device based on mechanical sampling.
Background
The economic development of China enters a new normal state, the improvement of electric power systems is continuously promoted, under the new situation of structural improvement of the supply side of the domestic coal market, cost reduction and efficiency improvement of electric power enterprises are realized under the situation that the coal price is high and the competition of power generation enterprises is severe, the fine management of fire coal needs to be enhanced, and the accuracy of coal mining and preparation is improved. In the whole sampling link, the error generated in the sampling link accounts for 80% of the total error, so that the improvement of the representativeness and the accuracy of the sampling link becomes the most important factor in the sampling and production work. At present, mechanical sampling devices are mostly adopted for coal samples of various power generation enterprises, but when the total moisture of the coal samples is large, the mechanical sampling devices can cause coal sticking and coal blockage in the sampling process, so that the abnormal problem of the coal samples is caused. Therefore, it is an urgent problem to develop research and develop solutions from the aspects of equipment management, dispatching management and automatic control informatization technology.
The operation system of the traditional mechanical sampling and sample preparation device can not find the coal blockage phenomenon of the coal dropping pipe in time, and the sample collected by the sampling head can not enter the sample preparation system after the coal dropping pipe is blocked; on the one hand, the coal samples are accumulated, and on the other hand, the sampling points are missed and the sampling representativeness is poor. Therefore, the automatic coal blockage early warning device for the coal dropping pipe of the mechanical sampling device is urgently needed to timely find the blockage problem of the coal dropping pipe, so that the blockage and the clearing are achieved, and the sampling representativeness effect is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an automatic coal blockage early warning device for a coal breakage pipe based on mechanical sampling, which can find the coal blockage phenomenon of the coal breakage pipe in time and avoid the accumulation of coal samples and the damage of a conveyor belt caused by coal blockage.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows.
The automatic coal blockage early warning device for the coal dropping pipe based on mechanical sampling comprises a movable door which is arranged on a side wall detection port of the coal dropping pipe and is used for detecting whether the coal dropping pipe is blocked or not; the movable door comprises a movable door arranged at the coal drop pipe detection port and a fixed door arranged on the outer side of the movable door, and an inclined door is obliquely arranged between the movable door and the fixed door; the top end of one side of the inclined door, which is far away from the fixed door, is provided with a limit switch for collecting the movement angle of the inclined door; the limit switch is connected with a control switch used for sending out an early warning signal through a lead, and the control switch is connected with an alarm.
According to the automatic coal blockage early warning device for the coal dropping pipe based on mechanical sampling, the middle part between the fixed door and the inclined door is provided with the pressure spring for resetting the movable door.
According to the automatic coal plugging early warning device for the coal dropping pipe based on mechanical sampling, the limiting angle of the limiting switch is 35 degrees.
Above-mentioned automatic early warning device of coal breakage pipe chute blockage based on mechanical sampling, the detection mouth department of dodge gate and coal breakage pipe is provided with the rubber pad that is used for sealing.
Due to the adoption of the technical scheme, the technical progress of the utility model is as follows.
The utility model has simple structure and reasonable design, is used for detecting the blockage of the coal dropping pipe of the mechanical sampling and preparing device, can provide timely information for operators, adopts modes of replacing a sampling scheme and the like, achieves the aims of sampling without interruption and improving the sampling representativeness, thereby avoiding the accumulation of coal samples and the damage of a conveyor belt caused by the coal blockage.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein: 1. the coal feeding device comprises a coal dropping pipe, 2. a movable door, 3. a pressure spring, 4. a limit switch and 5. a control switch.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Automatic early warning device of coal breakage pipe chute blockage based on mechanical sampling, its structure is shown in figure 1, including dodge gate 2, limit switch 4 and control switch 5, dodge gate 2 sets up on the detection mouth of coal breakage pipe 1 lateral wall, is used for detecting whether the chute blockage is in 1, limit switch 4 sets up on dodge gate 2, is used for gathering the angle that the dodge gate removed, and control switch 5 is used for sending early warning signal, and limit switch's output passes through wire connection control switch's input.
The movable door 2 comprises a movable door, an inclined door and a fixed door, the movable door is arranged at the detection port of the coal falling pipe 1, the fixed door is fixedly arranged at the outer side of the movable door, and the inclined door is obliquely arranged between the movable door and the fixed door. And a limit switch 4 is arranged at the top end of one side of the inclined door, which is far away from the fixed door, and is used for collecting the moving angle of the inclined door.
The accumulated materials in the coal dropping pipe extrude the movable door to enable the movable door to move outwards to drive the inclined door to move outwards, and when the inclined door is heavier to a moving angle, the limit switch is started to send a signal to the control switch.
The limit angle of the limit switch is 35 degrees, and the limit switch is started after the inclined door deflects for more than 35 degrees. The limit switches with different limit angles can be replaced according to the size and specification of the coal dropping pipe, so that the purposes of uninterrupted sampling and improvement of sampling representativeness can be achieved.
The middle part between fixed door and the slope door is provided with pressure spring 3 for making the dodge gate reset, and after the stifled coal clearance in the coal breakage pipe was accomplished, the pressure of accumulational material to the dodge gate reduced, under the effect of pressure spring, made the fixed door remove to the detection mouth department of coal breakage pipe.
The rubber pads are arranged at the detection ports of the movable door 2 and the coal dropping pipe 1 and used for sealing, and when the coal dropping pipe is not blocked, the movable door completely seals the detection port of the coal dropping pipe 1 through the rubber pads.
The control switch 5 can also be connected with a vibrator, the vibrator is used for vibrating the coal dropping pipe, when coal blockage occurs, the automatic vibrating function that slight blockage does not stop can be realized, and after blockage faults are discharged, the movable door automatically resets.
Claims (4)
1. Automatic early warning device of coal breakage pipe chute blockage based on mechanical sampling, its characterized in that: comprises a movable door (2) which is arranged on a side wall detection port of a coal dropping pipe (1) and is used for detecting whether the coal dropping pipe (1) is blocked; the movable door (2) comprises a movable door arranged at the detection port of the coal dropping pipe (1) and a fixed door arranged on the outer side of the movable door, and an inclined door is obliquely arranged between the movable door and the fixed door; the top end of one side of the inclined door, which is far away from the fixed door, is provided with a limit switch (4) for collecting the moving angle of the inclined door; the limit switch (4) is connected with a control switch (5) used for sending out an early warning signal through a lead, and the control switch (5) is connected with an alarm.
2. The automatic coal chute coal blockage early warning device based on mechanical sampling according to claim 1, which is characterized in that: and a pressure spring (3) for resetting the movable door is arranged in the middle between the fixed door and the inclined door.
3. The automatic coal chute coal blockage early warning device based on mechanical sampling according to claim 1, which is characterized in that: the limiting angle of the limiting switch is 35 degrees.
4. The automatic coal chute coal blockage early warning device based on mechanical sampling according to claim 1, which is characterized in that: and rubber pads for sealing are arranged at the detection ports of the movable door (2) and the coal dropping pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122059883.1U CN216004211U (en) | 2021-08-30 | 2021-08-30 | Automatic coal chute coal blockage early warning device based on mechanical sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122059883.1U CN216004211U (en) | 2021-08-30 | 2021-08-30 | Automatic coal chute coal blockage early warning device based on mechanical sampling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216004211U true CN216004211U (en) | 2022-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122059883.1U Active CN216004211U (en) | 2021-08-30 | 2021-08-30 | Automatic coal chute coal blockage early warning device based on mechanical sampling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216004211U (en) |
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2021
- 2021-08-30 CN CN202122059883.1U patent/CN216004211U/en active Active
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