Non-contact deviation automatic detection and correction system and method based on material conveyor
By using blowing and cleaning technology of air collection mechanism and air blowing mechanism in the correction system of the material conveyor, the problem of dust-affected gratings in the coal mine industry is solved, and the accuracy and stability of the correction system are improved.
Patent Information
- Application Number
- CN202411861268.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-02-18
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When existing equipment that uses gratings to correct contactlessly through gratings is used in the coal mining industry, due to the poor working environment, dust depends on the surface and surroundings of gratings, affecting the heat dissipation of gratings and the accuracy of monitoring data.
A non-contact automatic detection and correction system for deviation-free operation based on material conveyor is designed, using an air collecting mechanism and an air blowing mechanism to clean up dust on the surface of the grating by blowing air, ensuring good heat dissipation of the grating and improving the accuracy of the detection data.
It effectively reduces the dust dependence on the grating surface, ensures the accuracy of the heat dissipation of the grating and the detection data, and improves the effectiveness of the equipment in the coal mining industry.
Smart Images
Figure CN119460542A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of material conveyors, and in particular to a non-contact deviation automatic detection and correction system and method based on a material conveyor. Background Art
[0002] The non-contact deviation automatic detection and correction system based on the material conveyor is a high-tech device that uses sensors and control systems to monitor and automatically correct the deviation of the conveyor belt in real time to ensure the stability and safety of coal transportation; The system usually includes advanced technologies such as laser scanning, image recognition, and 3D point cloud monitoring. It can accurately sense the deviation distance of the belt and realize accurate automatic control of the deviation correction angle through high-speed communication network and remote host computer analysis and calculation. This system not only improves the efficiency of coal transmission, but also reduces the downtime and maintenance costs caused by deviation. It has important practical value in heavy industries such as coal mines. In the existing equipment that uses gratings for contactless deviation correction, if dust adheres to the grating surface and its surroundings during the correction process, it will affect the heat dissipation of the grating and the accuracy of monitoring data. When used in the coal mining industry, the effect is even worse due to the relatively poor working environment. Therefore, in order to solve the above problems, a non-contact deviation automatic detection and correction system and method based on a material conveyor is proposed. Summary of the invention
[0003] The purpose of the present invention is to provide a non-contact deviation automatic detection and correction system and method based on a material conveyor, so as to solve the problem that in the existing equipment that performs non-contact deviation correction through a grating, if dust adheres to the surface and surroundings of the grating during the correction process, it will affect the heat dissipation of the grating and the accuracy of the monitoring data. When used in the coal mining industry, the effect is even worse due to the relatively poor working environment.
[0004] To achieve the above object, the present invention provides the following technical solutions: The invention discloses a non-contact deviation automatic detection and correction system and method based on a material conveyor, comprising a deviation correction unit and a detection grating, wherein the deviation correction unit is mounted on the upper end of a frame, the upper end of one side of the frame is fixedly connected to the detection grating through a connecting piece, the outer side of the bottom end of the detection grating is fixedly connected to a cleaning block, one side of the upper end of the cleaning block is provided with an air blowing port for blowing air to the surface of the detection grating, an air pipe is mounted on one side of the cleaning block, the other end of the air pipe is connected to an air collecting mechanism, and an air blowing mechanism is mounted on the side of the air collecting mechanism; the air collecting mechanism comprises an air collecting box, both ends of the air collecting box are provided with exhaust ports, an air intake check valve is mounted on the side of the air collecting box, a partition is mounted in the middle of the air collecting box, rubber membranes are mounted on the inner sides of both ends of the partition, and an electrically controlled pressure valve is welded and fixed in the middle of the partition; the air blowing mechanism comprises a column shell, a transmission mechanism is mounted on the inner side of one end of the column shell through a telescopic spring, a spiral blade and a filter are mounted on the inner side of the other end of the column shell, and dust collecting mechanisms are mounted on both sides of the filter.
[0005] As further optimized content of the present invention, the column shell includes a shell, a limiting circular hole for positioning the transmission mechanism is opened on the inner side of one end of the shell, and mounting grooves for installing the dust collecting mechanism are opened on both sides of the other end of the shell. The transmission mechanism includes a transmission rod, and a piston plate is fixedly connected to one end of the transmission rod, through holes are opened on both sides of the piston plate, and a plastic baffle is installed on one side of the through hole. The dust collecting mechanism includes an arc plate, a sponge lining is installed on the inner side of the arc plate, and buckles are fixedly connected to both ends of the arc plate.
[0006] As a further optimization of the present invention, the column shell is fixedly connected to the air collecting box through an air intake one-way valve, two air intake one-way valves and two air inflation mechanisms are provided, and there is a one-to-one correspondence between the air intake one-way valves and the air inflation mechanisms.
[0007] As a further optimization of the present invention, a driving unit for controlling the adjustment of the correcting unit is installed on one side of the correcting unit, a bottom supporting roller for supporting the bottom of the conveyor belt is installed on the inner side of the upper end of the correcting unit, and the bottom supporting roller includes a roller body, and annular grooves are provided on the inner sides of both ends of the roller body, and raised blocks are fixedly connected to the upper and lower ends of the inner side of the annular groove.
[0008] As a further optimization of the present invention, a transmission rod is provided inside the annular groove, one end of the transmission rod is arranged on the inner side of the annular groove and is arc-shaped, two annular grooves are provided, and the annular grooves correspond to the air blowing mechanisms one by one, and two protruding blocks are installed inside any one of the annular grooves.
[0009] As a further optimization of the present invention, the transmission rod and the housing are slidably connected via a limiting circular hole, the piston plate is arranged inside the housing, and the angle between the piston plate and the transmission rod is 90°.
[0010] As a further optimization of the present invention, the piston plate is fixedly connected to the telescopic spring, the other end of the telescopic spring is fixedly connected to the inner wall of the shell, the telescopic spring is arranged on the outside of the transmission rod, and two through holes are opened inside the piston plate, and the through holes correspond one to one with the plastic baffle skin, and the plastic baffle skin is arranged on the side away from the telescopic spring.
[0011] As a further optimization of the present invention, the arc plate is fixedly connected to the inside of the mounting groove by a snap buckle, and two arc plates and two mounting grooves are provided, and there is a one-to-one correspondence between the arc plates and the mounting grooves.
[0012] As a further optimization of the present invention, there are two cleaning blocks and two air pipes, and the two cleaning blocks and air pipes correspond one to one with the detection gratings on both sides, and the air pipes are respectively installed at both ends of the air collecting mechanism.
[0013] As a further optimized content of the present invention, the following steps are included: Step I: The detection grating monitors the inclination of the belt: During the process of the material conveyor conveying the material through the conveyor belt, the detection grating detects the inclination and deviation of the conveyor belt in real time, and transmits the detection signal to the control host; Step II: The correction unit makes adjustments according to the feedback from the detection grating: The control host analyzes the signal transmitted by the detection grating and converts it into a control signal to be transmitted to the correction unit and the drive unit. The correction unit and the drive unit adjust the conveyor belt according to the received signal; Step III: The bottom support roller uses its own rotation to drive the air blowing mechanism to collect gas: during the conveying process, the conveyor belt drives the bottom support roller to rotate, and during the rotation of the bottom support roller, it drives the raised block to rotate. During the rotation of the raised block, when it contacts the transmission rod, the transmission rod pushes the piston plate to move. When the piston plate moves, the gas inside the shell is pushed into the gas collecting box through the spiral blades and the filter net for collection. When the gas passes through the spiral blades, the gas forms a cyclone, and the particles in the gas enter the sponge lining for collection under the action of centrifugal force. The collected particles can be collected later by disassembling the arc plate. At the same time, the particles in the gas entering the gas collecting box are filtered twice through the filter net to ensure the cleanliness of the gas entering the gas collecting box. Step IV: When the gas pressure inside the gas collecting mechanism reaches a certain level, the gas is discharged at once to clean the surface of the detection grating: When the gas pressure inside the gas collecting mechanism reaches a certain level, the electrically controlled pressure valve is fully opened, and the gas inside the gas collecting box is discharged through the exhaust port at once. The exhausted gas is discharged through the air pipe and the air outlet, and the dust on the surface of the detection grating can be processed in time to ensure the accuracy of the detection data of the detection grating.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by providing the air collecting mechanism, the air blowing mechanism, the cleaning block and the air pipe, the dust on the surface of the detection grating can be reduced by blowing air to the surface of the detection grating during the detection and correction process, thereby ensuring the heat dissipation of the detection grating and improving the accuracy of its detection data. The air collection provides power through the original power source of the equipment, without the need for external power input, which is more energy-saving. 2. In the present invention, in the process of collecting air, the spiral blades are used to change the way of air intake, so that the particles contained in the wind can be independently collected by centrifugal force, which can reduce the workload of the filter, and thus can effectively extend the use period of the filter and reduce the number of maintenance times within the use period of the equipment; 3. In the present invention, a gas collecting mechanism is utilized to store a large amount of gas at a time, and then the gas is discharged at a time through an electrically controlled pressure valve, thereby ensuring a single blowing volume, and the dust on the outside of the detection grating can be removed more thoroughly. Intermittent cleaning is used to effectively avoid frequent cleaning, which may affect the accuracy of the detection data of the detection grating. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 3 It is a schematic diagram of the structure of the gas collecting mechanism of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the structure at B in the middle; Figure 5 It is a schematic diagram of the column shell structure of the present invention; Figure 6 It is a schematic diagram of the transmission mechanism structure of the present invention; Figure 7 It is a schematic diagram of the structure of the dust collecting mechanism of the present invention.
[0016] In the figure: 1, frame; 2, correction unit; 3, detection grating; 4, connecting piece; 5, cleaning block; 6, air outlet; 7, air pipe; 8, driving unit; 9. bottom support roller; 91. roller body; 92. annular groove; 93. raised block; 10. Gas collecting mechanism; 101. Gas collecting box; 102. Exhaust port; 103. Inlet check valve; 104. Electric pressure valve; 105. Partition plate; 106. Rubber membrane; 11. air blowing mechanism; 111. column shell; 1111. shell; 1112. limiting circular hole; 1113. mounting groove; 112, transmission mechanism; 1121, transmission rod; 1122, piston plate; 1123, through hole; 1124, plastic stopper; 113. telescopic spring; 114. spiral blade; 115. filter screen; 116. Dust collecting mechanism; 1161. Arc plate; 1162. Sponge lining; 1163. Buckle. DETAILED DESCRIPTION
[0017] See also Figure 1-7 , the present invention provides a technical solution: The non-contact deviation automatic detection and correction system and method based on the material conveyor include a correction unit 2 and a detection grating 3, the correction unit 2 is installed on the upper end of a frame 1, the upper end of one side of the frame 1 is fixedly connected with the detection grating 3 through a connecting piece 4, the outer side of the bottom end of the detection grating 3 is fixedly connected with a cleaning block 5, one side of the upper end of the cleaning block 5 is provided with a blowing port 6 for blowing air to the surface of the detection grating 3, an air pipe 7 is installed on one side of the cleaning block 5, the other end of the air pipe 7 is connected to an air collecting mechanism 10, and an air blowing mechanism 11 is installed on the side of the air collecting mechanism 10; the air collecting mechanism 10 includes an air collecting box 101 Exhaust ports 102 are provided at both ends of the air collecting box 101, an air intake check valve 103 is installed on the side of the air collecting box 101, a partition 105 is installed in the middle of the air collecting box 101, rubber membranes 106 are installed on the inner sides of both ends of the partition 105, and an electric control pressure valve 104 is welded and fixed in the middle of the partition 105; the inflation mechanism 11 includes a column shell 111, a transmission mechanism 112 is installed on the inner side of one end of the column shell 111 through a telescopic spring 113, a spiral blade 114 and a filter screen 115 are installed on the inner side of the other end of the column shell 111, and dust collection mechanisms 116 are installed on both sides of the filter screen 115.
[0018] As a technical solution for further implementation of the present invention, the column shell 111 includes a shell 1111, a limiting circular hole 1112 for positioning the transmission mechanism 112 is provided on the inner side of one end of the shell 1111, and mounting grooves 1113 for mounting the dust collecting mechanism 116 are provided on both sides of the other end of the shell 1111. The transmission mechanism 112 includes a transmission rod 1121, and a piston plate 1122 is fixedly connected to one end of the transmission rod 1121. Through holes 1123 are provided on both sides of the piston plate 1122, and a plastic baffle 1124 is installed on one side of the through hole 1123. The dust collecting mechanism 116 includes an arc plate 1161, a sponge lining 1162 is installed on the inner side of the arc plate 1161, and buckles 1163 are fixedly connected to both ends of the arc plate 1161. Through the above arrangement, the air blowing mechanism 11 and the air collecting mechanism 10 can be more adapted. As a technical solution for further implementation of this scheme, the column housing 111 is fixedly connected to the gas collecting box 101 through the air intake check valve 103, and two air intake check valves 103 and the air blowing mechanism 11 are provided, and there is a one-to-one correspondence between the air intake check valve 103 and the air blowing mechanism 11. The above arrangement can improve the stability of the air collecting box 101 when collecting air inside; As a technical solution for further implementation of this scheme, a driving unit 8 for controlling the adjustment of the correcting unit 2 is installed on one side of the correcting unit 2, and a bottom support roller 9 for supporting the bottom of the conveyor belt is installed on the inner side of the upper end of the correcting unit 2. The bottom support roller 9 includes a roller body 91, and an annular groove 92 is provided on the inner side of both ends of the roller body 91. The upper and lower ends of the inner side of the annular groove 92 are fixedly connected with a protruding block 93, and a transmission rod 1121 is provided inside the annular groove 92. One end of the transmission rod 1121 arranged on the inner side of the annular groove 92 is arc-shaped. There are two annular grooves 92, and there is a one-to-one correspondence between the annular grooves 92 and the air blowing mechanism 11. There are two protruding blocks 93 installed in any annular groove 92. Through the above arrangement, the power generated during the rotation of the bottom support roller 9 can drive the air blowing mechanism 11 to operate; As a technical solution for further implementation of this solution, the transmission rod 1121 and the housing 1111 are slidably connected through the limiting circular hole 1112, and the piston plate 1122 is arranged inside the housing 1111. The angle formed between the piston plate 1122 and the transmission rod 1121 is 90°. Through the above arrangement, the stability of the entire device during operation can be further improved; As a technical solution for further implementation of this solution, the piston plate 1122 is fixedly connected to the telescopic spring 113, the other end of the telescopic spring 113 is fixedly connected to the inner wall of the housing 1111, the telescopic spring 113 is arranged on the outside of the transmission rod 1121, and two through holes 1123 are opened inside the piston plate 1122, and the through holes 1123 correspond to the plastic baffle 1124 one by one, and the plastic baffle 1124 is arranged on the side away from the telescopic spring 113. Through the above arrangement, the stability of the gas supply to the inside of the gas collecting mechanism 10 can be improved; As a further technical solution of this solution, the arc plate 1161 is fixedly connected to the inside of the installation groove 1113 by means of a buckle 1163. There are two arc plates 1161 and two installation grooves 1113, and there is a one-to-one correspondence between the arc plates 1161 and the installation grooves 1113. Through the above arrangement, it is convenient to clean the 1162 installed inside the arc plate 1161 during the later maintenance of the overall device. As a technical solution for further implementation of this scheme, two cleaning blocks 5 and two air pipes 7 are provided, and the two cleaning blocks 5 and the air pipes 7 correspond to the detection gratings 3 on both sides one by one. The air pipes 7 are respectively installed at both ends of the gas collecting mechanism 10. Through the above arrangement, the surfaces of the detection gratings 3 set on both sides can be cleaned simultaneously during the operation of the equipment; As a technical solution for further implementation of this scheme, the following steps are included: Step I: The detection grating 3 monitors the inclination of the belt: During the process of the material conveyor conveying the material through the conveyor belt, the detection grating 3 detects the inclination and deviation of the conveyor belt in real time, and transmits the detection signal to the control host; Step II: the correction unit 2 is adjusted according to the feedback from the detection grating 3: the control host analyzes the signal transmitted by the detection grating 3, and converts it into a control signal and transmits it to the correction unit 2 and the driving unit 8. The correction unit 2 and the driving unit 8 adjust the conveyor belt according to the received signal; Step III: The bottom support roller 9 utilizes its own rotation to drive the air blowing mechanism 11 to collect gas: during the conveying process, the conveyor belt drives the bottom support roller 9 to rotate, and during the rotation process, the bottom support roller 9 drives the protruding block 93 to rotate. During the rotation process, when the protruding block 93 contacts the transmission rod 1121, the transmission rod 1121 pushes the piston plate 1122 to move. When the piston plate 1122 moves, the gas inside the shell 1111 is pushed into the gas collecting box 101 through the spiral blade 114 and the filter screen 115 for collection. When the gas passes through the spiral blade 114, the gas forms a cyclone, and the particles in the gas enter the sponge lining 1162 for collection under the action of centrifugal force. The collected particles can be collected by disassembling the arc plate 1161 at a later stage. At the same time, the particles in the gas entering the gas collecting box 101 are filtered for a second time through the filter screen 115, which can ensure the cleanliness of the gas entering the gas collecting box 101. Step IV: When the gas pressure inside the gas collecting mechanism 10 reaches a certain level, the gas is discharged at one time to clean the surface of the detection grating 3: When the gas pressure inside the gas collecting mechanism 10 reaches a certain level, the electrically controlled pressure valve 104 is fully opened, and the gas inside the gas collecting box 101 is discharged through the exhaust port 102 at one time, and the discharged gas is discharged through the air pipe 7 and the air outlet 6, so that the dust on the surface of the detection grating 3 can be processed in time to ensure the accuracy of the detection data of the detection grating 3.
[0019] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.
Claims
1. A non-contact deviation automatic detection and correction system based on a material conveyor, comprising a correction unit (2) and a detection grating (3), characterized in that: The deflection correction unit (2) is mounted on the upper end of the frame (1); the upper end of one side of the frame (1) is fixedly connected to a detection grating (3) via a connecting piece (4); a cleaning block (5) is fixedly connected to the outer side of the bottom end of the detection grating (3); a blowing port (6) for blowing air to the surface of the detection grating (3) is provided on one side of the upper end of the cleaning block (5); an air pipe (7) is installed on one side of the cleaning block (5); the other end of the air pipe (7) is connected to an air collecting mechanism (10); and an air blowing mechanism (11) is installed on the side of the air collecting mechanism (10); The gas collecting mechanism (10) comprises a gas collecting box (101), both ends of the gas collecting box (101) are provided with exhaust ports (102), a gas intake check valve (103) is installed on the side of the gas collecting box (101), a partition (105) is installed in the middle of the gas collecting box (101), rubber membranes (106) are installed on the inner sides of both ends of the partition (105), and an electric control pressure valve (104) is welded and fixed in the middle of the partition (105); The air blowing mechanism (11) comprises a column shell (111), a transmission mechanism (112) being installed on the inner side of one end of the column shell (111) via a telescopic spring (113), a spiral blade (114) and a filter screen (115) being installed on the inner side of the other end of the column shell (111), and dust collecting mechanisms (116) being installed on both sides of the filter screen (115).
2. The non-contact deviation automatic detection and correction system based on the material conveyor according to claim 1 is characterized in that: The column shell (111) comprises a shell (1111), a limiting circular hole (1112) for positioning the transmission mechanism (112) is provided on the inner side of one end of the shell (1111), mounting grooves (1113) for mounting the dust collecting mechanism (116) are provided on both sides of the other end of the shell (1111), the transmission mechanism (112) comprises a transmission rod (1121), one end of the transmission rod (1121) is fixedly connected to a piston plate (1122), both sides of the piston plate (1122) are provided with through holes (1123), one side of the through hole (1123) is installed with a plastic baffle (1124), the dust collecting mechanism (116) comprises an arc plate (1161), a sponge lining (1162) is installed on the inner side of the arc plate (1161), and both ends of the arc plate (1161) are fixedly connected with buckles (1163).
3. The non-contact deviation automatic detection and correction system based on the material conveyor according to claim 1 is characterized in that: The column housing (111) is fixedly connected to the air collecting box (101) via an air intake check valve (103), two of each of the air intake check valve (103) and the air blowing mechanism (11) are provided, and there is a one-to-one correspondence between the air intake check valve (103) and the air blowing mechanism (11).
4. The non-contact deviation automatic detection and correction system based on the material conveyor according to claim 1 is characterized in that: A driving unit (8) for controlling the adjustment of the deflection correction unit (2) is installed on one side of the deflection correction unit (2); a bottom support roller (9) for supporting the bottom of the conveyor belt is installed on the inner side of the upper end of the deflection correction unit (2); the bottom support roller (9) comprises a roller body (91); an annular groove (92) is formed on the inner side of both ends of the roller body (91); and a protruding block (93) is fixedly connected to the upper and lower ends of the inner side of the annular groove (92).
5. The non-contact deviation automatic detection and correction system based on the material conveyor according to claim 4 is characterized in that: A transmission rod (1121) is provided inside the annular groove (92); one end of the transmission rod (1121) disposed inside the annular groove (92) is arc-shaped; two annular grooves (92) are provided; the annular grooves (92) correspond to the air blowing mechanism (11) in a one-to-one manner; and two protruding blocks (93) are installed inside any one of the annular grooves (92).
6. The non-contact deviation automatic detection and correction system based on the material conveyor according to claim 2 is characterized by: The transmission rod (1121) and the housing (1111) are slidably connected via a limiting circular hole (1112); the piston plate (1122) is arranged inside the housing (1111); and the angle formed between the piston plate (1122) and the transmission rod (1121) is 90°.
7. The non-contact deviation automatic detection and correction system based on the material conveyor according to claim 2 is characterized in that: The piston plate (1122) is fixedly connected to the telescopic spring (113); the other end of the telescopic spring (113) is fixedly connected to the inner wall of the housing (1111); the telescopic spring (113) is arranged outside the transmission rod (1121); two through holes (1123) are provided inside the piston plate (1122); the through holes (1123) correspond to the plastic baffle (1124) in a one-to-one manner; the plastic baffle (1124) is arranged on a side away from the telescopic spring (113).
8. The non-contact deviation automatic detection and correction system based on the material conveyor according to claim 2 is characterized in that: The arc-shaped plate (1161) is fixedly connected to the inside of the mounting groove (1113) via a buckle (1163); two arc-shaped plates (1161) and two mounting grooves (1113) are provided, and there is a one-to-one correspondence between the arc-shaped plates (1161) and the mounting grooves (1113).
9. The non-contact deviation automatic detection and correction system based on the material conveyor according to claim 1 is characterized in that: Two cleaning blocks (5) and two air pipes (7) are provided, and the two cleaning blocks (5) and the air pipes (7) correspond one to one with the detection gratings (3) on both sides. The air pipes (7) are respectively installed at both ends of the air collection mechanism (10).
10. The non-contact deviation automatic detection and correction method based on a material conveyor according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step I: the detection grating (3) monitors the inclination of the belt: when the material conveyor conveys the material through the conveyor belt, the detection grating (3) detects the inclination and deviation of the conveyor belt in real time, and transmits the detection signal to the control host; Step II: the deflection correction unit (2) makes adjustments according to the feedback from the detection grating (3): the control host analyzes the signal transmitted by the detection grating (3), and converts it into a control signal and transmits it to the deflection correction unit (2) and the driving unit (8). The deflection correction unit (2) and the driving unit (8) adjust the conveyor belt according to the received signal; Step III: The bottom support roller (9) utilizes its own rotation to drive the air blowing mechanism (11) to collect gas: during the conveying process, the conveyor belt drives the bottom support roller (9) to rotate, and during the rotation of the bottom support roller (9), the protrusion block (93) is driven to rotate, and during the rotation of the protrusion block (93), when it contacts the transmission rod (1121), the transmission rod (1121) pushes the piston plate (1122) to move, and when the piston plate (1122) moves, the gas inside the housing (1111) is blown out through the spiral blades. The spiral blade (114) and the filter screen (115) are pushed into the gas collecting box (101) for collection. When the gas passes through the spiral blade (114), the gas forms a cyclone. Under the action of centrifugal force, particles in the gas enter the sponge lining (1162) for collection. The collected particles can be collected later by removing the arc plate (1161). At the same time, the particles in the gas entering the gas collecting box (101) are filtered for a second time through the filter screen (115), thereby ensuring the cleanliness of the gas entering the gas collecting box (101). Step IV: When the gas pressure inside the gas collecting mechanism (10) reaches a certain level, the gas is discharged at one time to clean the surface of the detection grating (3): When the gas pressure inside the gas collecting mechanism (10) reaches a certain level, the electrically controlled pressure valve (104) is fully opened, and the gas inside the gas collecting box (101) is discharged at one time through the exhaust port (102). The discharged gas is discharged through the air pipe (7) and the air outlet (6), so that the dust on the surface of the detection grating (3) can be processed in time to ensure the accuracy of the detection data of the detection grating (3).