A filter plate anti-deviation laser detection device for a belt filter

Abstract

This application discloses a laser detection device for preventing filter plate misalignment in a belt filter press, belonging to the field of laser detection technology for preventing filter plate misalignment. The device includes a filter press body, with multiple sets of filter plates mounted on the inner side of the body. Laser detectors are mounted at both the front and rear ends of the right side of the filter press body. In this application, when the filter plate experiences high-frequency, small-amplitude misalignment due to normal vibration, the filter plate pushes the pressure plate, causing it to tilt. The pressure plate, through the elastic potential energy of multiple springs, pushes the filter plate back to its original position, keeping it in the center of the filter press body. This achieves a buffering effect, preventing the opening from detaching from the laser's optical path and triggering an alarm early. When the filter plate experiences significant misalignment, the alarm and motor activate together, causing the compression block to press against the protruding compression block, further pushing the filter plate back to its original position and preventing interference with the filtration process.

Description

Technical Field

[0001] This invention belongs to the field of filter plate anti-displacement laser detection technology, specifically relating to a filter plate anti-displacement laser detection device for belt filter presses. Background Technology

[0002] Belt filter presses are solid-liquid separation equipment widely used in environmental protection, chemical, and mining industries. They have significant advantages such as high automation, continuous operation, and large processing capacity, and occupy an important position in industrial production and municipal wastewater treatment. However, during long-term operation, belt filter presses are affected by various factors, and the phenomenon of filter plates deviating from the center line occurs frequently. This failure occurs at a high frequency and poses a serious threat to the safe and stable operation of the equipment.

[0003] The announcement number CN219015232U describes a filter plate misalignment detection device for plate and frame filter presses. This device includes a trigger plate mounted on the filter plate, an alarm device, and a trigger mechanism positioned between the trigger plate and the alarm device. During operation, when the filter plate experiences high-frequency, small-amplitude misalignment due to normal vibration, the device immediately triggers an alarm. This is not conducive to detecting filter plate misalignment. Furthermore, when the filter press processes certain special products (such as boron carbide), a large amount of dust is generated in the air, which may obstruct the laser emitted by the laser detector, causing the alarm device to trigger prematurely. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a laser detection device for preventing filter plate misalignment in belt filter presses, thus solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides a filter plate anti-displacement laser detection device for a belt filter press, comprising a filter press body, wherein multiple sets of filter plates are assembled on the inner side of the filter press body, laser detectors are assembled at both the front and rear ends of the right side of the filter press body, and laser alarm receivers are assembled at both the front and rear ends of the left side of the filter press body. Two sets of mounting plates are fixedly connected to the top of the filter press body, at both ends of the multiple filter plates. A rotating rod is rotatably connected between the two sets of mounting plates. A pressure plate is fixedly connected to the outer side of the rotating rod. A baffle is fixedly connected between the two sets of mounting plates. Multiple sets of springs are fixedly connected between the baffle and the pressure plate. Multiple sets of passive push plates are slidably connected to the top of the filter press body, at both ends of the multiple filter plates. A rectangular plate is fixedly connected above the passive push plate, and an opening is formed on the outer side of the rectangular plate. A spring is fixedly connected below the passive push plate. The filter press includes a first extrusion block, a telescopic rod fixedly connected to the filter press body, a second spring fixedly connected to the first extrusion block and the filter press body, the second spring being sleeved on the outside of the telescopic rod, motors mounted on both sides of the filter press body, reciprocating screws mounted on the output ends of the motors, the reciprocating screws being rotatably connected to the inside of the filter press body, a moving block threadedly connected to the outside of the reciprocating screws, the moving block being slidably connected to the outside of the filter press body, a connecting rod fixedly connected above the moving block, and a second extrusion block fixedly connected above the connecting rod.

[0006] As a further description of the above technical solution: The filter plate is assembled inside the filter press body and between two sets of passive push plates, with the passive push plates and the filter plate in close contact with each other.

[0007] As a further description of the above technical solution: All of the multiple openings are located on the laser path emitted by the laser detector, the pressure plate and the filter plate are in contact with each other, and the diameter of the opening is larger than the diameter of the laser spot.

[0008] As a further description of the above technical solution: The end of the first extrusion block near the second extrusion block is set with an arc-shaped structure, and both ends of the second extrusion block are set with arc-shaped structures.

[0009] As a further description of the above technical solution: Both sides of the filter press body are slidably connected to lifting plates. A pressing block three is fixedly connected to the outer side of the moving block and below the lifting plate. Multiple sets of transmission plates are slidably connected above the lifting plate. A pressing rod one is slidably connected above the passive push plate. A groove is formed on the outer side of the pressing rod one. A round rod is fixedly connected to the inner side of the transmission plate and inside the groove. An extension plate one is fixedly connected to the outer side of the pressing rod one. An extension plate two is fixedly connected above the passive push plate. A spring three is fixedly connected between the extension plate one and the extension plate two. A pressing plate is slidably connected above the passive push plate. A support plate is fixedly connected above the pressing plate. A cleaning rod is fixedly connected to the inner side of the support plate. A spring four is fixedly connected between the support plate and the rectangular plate.

[0010] As a further description of the above technical solution: The groove is inclinedly opened on the outside of the extrusion rod one, the extrusion plate is in contact with the extrusion rod one, and the side of the extrusion plate in contact with the extrusion rod one is set as an inclined surface.

[0011] As a further description of the above technical solution: The cleaning rod is a hollow structure, and multiple sets of openings are provided on the outer side of the cleaning rod. The multiple sets of openings are evenly distributed on the outer side of the cleaning rod. The cleaning rod and the openings are on the same straight line. Multiple sets of arc-shaped plates are fixedly connected to the lower part of the lifting plate. The multiple sets of arc-shaped plates are evenly distributed below the lifting plate.

[0012] As a further description of the above technical solution: An opening 1 is provided on the outer side of the passive push plate. A housing is fixedly connected to the upper part of the filter press body and inside the opening 1. A prompting rod is slidably connected to the inner side of the housing. A spring 5 is fixedly connected between the lower part of the prompting rod and the bottom of the inner side of the housing. A protrusion is fixedly connected to the upper part of the prompting rod. An mounting plate 2 is fixedly connected to the upper part of the passive push plate. Two sets of rectangular rods 1 are fixedly connected to the outer side of the mounting plate 2. A sliding rod is slidably connected to the inner side of the rectangular rod 1. A rectangular rod 2 is slidably connected to the outer side of the sliding rod. A spring 6 is fixedly connected between the rectangular rod 2 and the rectangular rod 1. The spring 6 is sleeved on the outer side of the sliding rod. A baffle plate is fixedly connected to the outer side of the two sets of rectangular rods 1.

[0013] As a further description of the above technical solution: The outer side of the baffle plate has an opening two, the area of ​​which is the same as the area of ​​the upper surface of the protrusion, and the protrusion is on the inner side of the baffle plate.

[0014] The advantages of this application are: (1) In this application, when the filter plate experiences high-frequency, small-amplitude displacement due to normal vibration, the filter plate pushes the pressure plate, causing the pressure plate to tilt. The pressure plate can then use the elastic potential energy of multiple sets of springs to push the filter plate back to its original position, keeping the filter plate in the middle of the filter press body, thereby achieving a buffering effect to prevent the opening from leaving the laser's optical path and triggering the alarm in advance. When the filter plate experiences a large displacement, the alarm and motor start together, causing the extrusion block two to extrude the protruding extrusion block one, thereby pushing the filter plate back to its original position and avoiding affecting the filtration work.

[0015] (2) In this application, when the motor starts, the extrusion block three continuously extrudes multiple sets of arc plates below the lifting plate, causing the lifting plate to move the cleaning rod up and down continuously, thereby causing the cleaning rod to move back and forth inside the opening one, cleaning the dust on the inner wall of the opening one, avoiding dust clogging the opening one, so that the laser emitted by the laser detector cannot pass through the opening one, and triggering the alarm in advance.

[0016] (3) In this application, when the filter plate is significantly offset, the mounting plate moves to the outer shell, causing the spring six to push the rectangular rod to the outer shell, thereby moving the shielding plate and stopping the shielding plate from blocking the indicator rod. The indicator rod can be ejected from the outer shell by the elastic force of the spring five, so that the operator can find the filter plate that was previously significantly offset and re-inspect the filter plate that was previously significantly offset, and detect the fault in time. Attached Figure Description

[0017] Figure 1 This is an overall appearance and structural diagram of the present invention; Figure 2 This is a structural diagram of the lower part of the baffle of the present invention; Figure 3 This is the invention Figure 2 Enlarged view of point a in the middle; Figure 4 This is a structural diagram of the two sets of mounting plates of the present invention; Figure 5 This is a structural diagram of the inner side and periphery of the pressure plate of the present invention; Figure 6 This is a set of passive pusher plates and surrounding structure diagrams of the present invention; Figure 7 This is a structural diagram of a set of passive push plates and surrounding parts of the present invention; Figure 8 This is a side view of a set of passive push plates and surrounding structures of the present invention; Figure 9 This is the invention Figure 8 Enlarged view at point b in the middle; Figure 10 This is the invention Figure 6 Enlarged view at point c; Figure 11 This is a structural diagram of the mounting plate 2 and the outer shell of the present invention; Figure 12 This is a structural diagram of the inner side of the outer casing of the present invention.

[0018] Explanation of key figure labels: 100. Filter press body; 200. Filter plate; 300. Laser detector; 400. Laser receiver trigger; 101. Mounting plate one; 102. Rotating rod; 103. Pressure plate; 104. Baffle; 105. Spring one; 106. Passive push plate; 107. Rectangular plate; 108. Extrusion block one; 109. Telescopic rod; 110. Spring two; 111. Motor; 112. Reciprocating screw; 113. Moving block; 114. Connecting rod; 115. Extrusion block two; 116. Opening one; 201. Lifting plate; 202. Extrusion... 203. Pressing block 3; 204. Transmission plate; 205. Extrusion rod 1; 206. Slide groove; 207. Round rod; 208. Extension plate 1; 209. Extension plate 2; 2000. Spring 3; 210. Extrusion plate; 211. Support plate; 212. Cleaning rod; 213. Spring 4; 301. Mounting plate 2; 302. Outer shell; 303. Indicator rod; 304. Spring 5; 305. Protrusion; 306. Opening 1; 307. Rectangular rod 1; 308. Sliding rod; 309. Rectangular rod 2; 310. Spring 6; 311. Cover plate. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0020] Example 1, as Figures 1-9 As shown, a filter plate anti-deviation laser detection device for a belt filter press includes a filter press body 100, with multiple sets of filter plates 200 mounted on the inner side of the filter press body 100, laser detectors 300 mounted on both the front and rear ends of the right side of the filter press body 100, and laser receiving triggers 400 mounted on both the front and rear ends of the left side of the filter press body 100. Two sets of mounting plates 101 are fixedly connected above the filter press body 100 and at both ends of the multiple sets of filter plates 200. A rotating rod 102 is rotatably connected between the two sets of mounting plates 101. A pressure plate 103 is fixedly connected to the outside of the rotating rod 102. A baffle 104 is fixedly connected between the two sets of mounting plates 101. Multiple sets of springs 105 are fixedly connected between the baffle 104 and the pressure plate 103. By setting the pressure plate 103 and the springs 105, a buffering effect is achieved on the filter plates 200. Multiple sets of... The passive pusher plate 106 and filter plate 200 are assembled inside the filter press body 100 and between two sets of passive pusher plates 106. The passive pusher plate 106 and filter plate 200 are in close contact with each other. A rectangular plate 107 is fixedly connected above the passive pusher plate 106. An opening 116 is provided on the outer side of the rectangular plate 107. When multiple openings 116 are in the laser beam path, the laser receiver trigger 400 does not trigger. When the opening 116 is not in the laser beam path, the laser receiver trigger 400 triggers an alarm and starts the motor 111. Along the laser path emitted by the photodetector 300, the pressure plate 103 and the filter plate 200 are in close contact. The diameter of the opening 116 is larger than the diameter of the laser spot. A pressing block 108 is fixedly connected below the passive push plate 106. A telescopic rod 109 is fixedly connected between the pressing block 108 and the filter press body 100. A spring 110 is fixedly connected between the pressing block 108 and the filter press body 100. The spring 110 is sleeved on the outside of the telescopic rod 109. Motors 111 are mounted on both sides of the filter press body 100. A reciprocating screw 112 is mounted on the output end of the motor 111. The reciprocating screw 112 rotates to connect... A moving block 113 is threadedly connected to the outer side of the reciprocating screw 112, which is attached to the inner side of the filter press body 100. The moving block 113 is slidably connected to the outer side of the filter press body 100. A connecting rod 114 is fixedly connected above the moving block 113. A second extrusion block 115 is fixedly connected above the connecting rod 114. One end of the first extrusion block 108 near the second extrusion block 115 is set with an arc-shaped structure. Both ends of the second extrusion block 115 are set with arc-shaped structures. By setting the first extrusion block 108 and the second extrusion block 115, the second extrusion block 115 can extrude the protruding first extrusion block 108, so that the first extrusion block 108 returns to its original position.

[0021] In practical use, when the filter press is operating and the filter plate 200 experiences high-frequency, small-amplitude displacement due to normal vibration, the filter plate 200 pushes the pressure plate 103, causing the pressure plate 103 to tilt. The pressure plate 103, through the elastic potential energy of multiple sets of springs 105, pushes the filter plate 200 back to its original position, keeping the filter plate 200 in the middle of the filter press body 100. This achieves a buffering effect, preventing the opening 116 from detaching from the optical path of the laser emitted from the laser detector 300, thus preventing the laser emitted from the laser detector 300 from being blocked. The laser beam can enter the laser receiver trigger 400. When the filter plate 200 shifts significantly, the filter plate 200 pushes the passive pusher plate 106 to move, causing the passive pusher plate 106 to move the extrusion blocks 108, making one set of extrusion blocks 108 into protrusions of multiple sets of extrusion blocks 108. At the same time, the passive pusher plate 106 moves the rectangular plate 107 together, causing the opening 116 on the outer side of the rectangular plate 107 to completely deviate from the laser beam path, preventing the laser receiver trigger 400 from receiving the laser beam emitted by the laser detector 300. The light causes the laser receiver trigger 400 to activate an alarm and start the motor 111. The motor 111 drives the reciprocating screw 112 to rotate, which in turn moves the moving block 113 along the screw. The moving block 113 then moves the connecting rod 114, which in turn moves the second pressing block 115. This allows the second pressing block 115 to press against a protruding set of first pressing blocks 108. After being pressed by the second pressing block 115, the first pressing blocks 108 move towards the filter plate 200 and then back to their original positions. The passive pusher plate 106 pushes the filter plate 200 back to its original position, thus preventing the filter press from becoming less efficient due to misalignment of the filter plate 200. An alarm is also triggered to allow the operator to re-inspect the filter press and detect any potential malfunctions. When the misaligned filter plate 200 returns to its original position, the laser receiver trigger 400 re-receives the laser emitted by the laser detector 300, stopping the alarm and causing the motor 111 to drive the moving block 113 back to its original position, after which the motor 111 stops running.

[0022] Example 2, as Figure 1 , Figure 6 , Figure 10As shown, based on Embodiment 1, lifting plates 201 are slidably connected to both sides of the filter press body 100. A pressing block 202 is fixedly connected to the outer side of the moving block 113 and below the lifting plate 201. Multiple sets of transmission plates 203 are slidably connected above the lifting plate 201. A pressing rod 204 is slidably connected above the passive push plate 106. A groove 205 is provided on the outer side of the pressing rod 204. The inner side of the transmission plate 203 and the inner side of the groove 205... A round rod 206 is fixedly connected. A sliding groove 205 is provided between the round rod 206 and the sliding groove 205. When the round rod 206 moves upward within the sliding groove 205, it can compress the first extrusion rod 204, causing the first extrusion rod 204 to move towards the filter plate 200. An extension plate 207 is fixedly connected to the outer side of the first extrusion rod 204. An extension plate 208 is fixedly connected above the passive push plate 106. A spring 209 is fixedly connected between the first extension plate 207 and the second extension plate 208. The passive push plate 106... A pressing plate 210 is slidably connected above the opening 116. A groove 205 is inclinedly opened on the outside of the pressing rod 204. The pressing plate 210 and the pressing rod 204 are in contact with each other, and the sides of the pressing plate 210 and the pressing rod 204 that are in contact are both set as bevels. A support plate 211 is fixedly connected above the pressing plate 210. A cleaning rod 212 is fixedly connected to the inner side of the support plate 211. By setting the cleaning rod 212, the inner wall of the opening 116 is cleaned to avoid... Dust accumulation causes the opening 116 to become clogged. The cleaning rod 212 is designed as a hollow structure. Multiple sets of openings 212 are opened on the outside of the cleaning rod 212. The cleaning rod 212 and the opening 116 are on the same straight line. Multiple sets of arc-shaped plates are fixedly connected to the lower part of the lifting plate 201. The multiple sets of arc-shaped plates are evenly distributed below the lifting plate 201. A spring 4 213 is fixedly connected between the support plate 211 and the rectangular plate 107.

[0023] In practical use, when the moving block 113 moves along the reciprocating screw 112, it drives the extrusion block 202 to move, allowing the extrusion block 202 to continuously extrude pressure onto the multiple sets of arc-shaped plates below the lifting plate 201, causing the lifting plate 201 to move upwards continuously. When the extrusion block 202 passes a set of arc-shaped plates below the lifting plate 201, the lifting plate 201 moves downwards due to its own weight, thus achieving the purpose of continuous up-and-down movement of the lifting plate 201. This allows the lifting plate 201 to drive the multiple sets of transmission plates 203 to move up and down continuously, which in turn drives the round rod 206 to move up and down continuously. When the round rod 206 moves upwards, it extrudes the extrusion rod 204, causing the extrusion rod 204 to move towards the extrusion plate 210. The extrusion rod 204 presses against the extrusion plate 210, causing the extrusion plate 210 to move towards the rectangular plate 107. The extrusion plate 210 then moves the support plate 211, which in turn moves the cleaning rod 212. The cleaning rod 212 extends into the opening 116 to clean the dust accumulated on the inner wall of the opening 116, thus preventing the opening 116 from becoming clogged. When the round rod 206 moves downward, the extrusion rod 204 can return to its original position under the force of the spring 209, ending the extrusion of the extrusion plate 210. The support plate 211 can then return to its original position under the force of the spring 213, allowing the cleaning rod 212 to return to its original position. This allows the cleaning rod 212 to continuously extend into the opening 116, improving the efficiency of cleaning the inner wall of the opening 116.

[0024] Example 3, as Figures 11-12As shown, based on Embodiment 1, an opening 306 is provided on the outer side of the passive push plate 106. A housing 302 is fixedly connected to the upper part of the filter press body 100 and inside the opening 306. A prompting rod 303 is slidably connected to the inner side of the housing 302. By setting the prompting rod 303, the prompting rod 303 can pop out of the housing 302 to attract the operator's attention. A spring 304 is fixedly connected between the lower part of the prompting rod 303 and the bottom of the inner side of the housing 302. A protrusion 305 is fixedly connected to the upper part of the prompting rod 303. By setting the protrusion 305, the operator can easily return the prompting rod 303 to its original position. A mounting plate 301 is fixedly connected to the upper part of the passive push plate 106. Two sets of rectangular rods 307 are fixedly connected to the outer side of 301. A sliding rod 308 is slidably connected to the inner side of the rectangular rod 307. A rectangular rod 309 is slidably connected to the outer side of the sliding rod 308. A spring 310 is fixedly connected between the rectangular rod 309 and the rectangular rod 307. The spring 310 is sleeved on the outer side of the sliding rod 308. A baffle plate 311 is fixedly connected to the outer side of the two sets of rectangular rods 307. By setting the baffle plate 311, the prompting rod 303 is blocked, so that the prompting rod 303 cannot pop out of the outer shell 302. An opening 2 is opened on the outer side of the baffle plate 311. The area of ​​the opening 2 is the same as the area of ​​the upper surface of the protrusion 305. The protrusion 305 is on the inner side of the baffle plate 311.

[0025] In practical use, when the filter plate 200 shifts significantly and pushes the passive pusher plate 106, the passive pusher plate 106 moves the mounting plate 2 301 towards the outer casing 302. This causes the mounting plate 2 301 to move the rectangular rod 1 307, which in turn moves the spring 6 310. The spring 6 310 then pushes the rectangular rod 2 309, which in turn moves the baffle plate 311. This allows the baffle plate 311 to stop blocking the indicator rod 303, causing the indicator rod 303 to pop out of the outer casing 302 by the elastic force of the spring 5 304. This makes it easier for the operator to locate the previously significantly shifted filter plate 200 and to re-inspect it to detect any faults. When the filter plate 200 returns to its original position, the passive pusher plate 106 moves the mounting plate 2 301... Returning to its original position, since the indicator rod 303 has popped out of the outer casing 302, it blocks the cover plate 311, preventing the cover plate 311 from returning to its original position. This ensures that the indicator rod 303 remains popped out of the outer casing 302, preventing the operator from being unable to find the indicator rod 303 after the filter plate 200 returns to its original position, and thus preventing the operator from finding the previously offset filter plate 200. When the operator has finished checking the filter plate 200, the operator can press the protrusion 305, causing the protrusion 305 to move the indicator rod 303 downward, so that the indicator rod 303 stops blocking the cover plate 311. The cover plate 311 can then return to its original position by the force of the spring six 310, allowing the cover plate 311 to block the indicator rod 303 again, preventing the indicator rod 303 from popping out of the outer casing 302 by the elastic force of the spring five 304.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser detection device for preventing filter plate misalignment in a belt filter press, comprising a filter press body, characterized in that, The filter press body is equipped with multiple sets of filter plates on its inner side. Laser detectors are installed at both the front and rear ends of the right side of the filter press body, and laser receiving triggers are installed at both the front and rear ends of the left side of the filter press body. Two sets of mounting plates are fixedly connected to the top of the filter press body, at both ends of the multiple filter plates. A rotating rod is rotatably connected between the two sets of mounting plates. A pressure plate is fixedly connected to the outer side of the rotating rod. A baffle is fixedly connected between the two sets of mounting plates. Multiple sets of springs are fixedly connected between the baffle and the pressure plate. Multiple sets of passive push plates are slidably connected to the top of the filter press body, at both ends of the multiple filter plates. A rectangular plate is fixedly connected above the passive push plate, and an opening is formed on the outer side of the rectangular plate. A spring is fixedly connected below the passive push plate. The filter press includes a first extrusion block, a telescopic rod fixedly connected to the filter press body, a second spring fixedly connected to the first extrusion block and the filter press body, the second spring being sleeved on the outside of the telescopic rod, motors mounted on both sides of the filter press body, reciprocating screws mounted on the output ends of the motors, the reciprocating screws being rotatably connected to the inside of the filter press body, a moving block threadedly connected to the outside of the reciprocating screws, the moving block being slidably connected to the outside of the filter press body, a connecting rod fixedly connected above the moving block, and a second extrusion block fixedly connected above the connecting rod.

2. The laser detection device for preventing filter plate misalignment in a belt filter press according to claim 1, characterized in that, The filter plate is assembled inside the filter press body and between two sets of passive push plates, with the passive push plates and the filter plate in close contact with each other.

3. The laser detection device for preventing filter plate misalignment in a belt filter press according to claim 2, characterized in that, All of the multiple openings are located on the laser path emitted by the laser detector, the pressure plate and the filter plate are in contact with each other, and the diameter of the opening is larger than the diameter of the laser spot.

4. The laser detection device for preventing filter plate misalignment in a belt filter press according to claim 3, characterized in that, The end of the first extrusion block near the second extrusion block is set with an arc-shaped structure, and both ends of the second extrusion block are set with arc-shaped structures.

5. The laser detection device for preventing filter plate misalignment in a belt filter press according to claim 4, characterized in that, Both sides of the filter press body are slidably connected to lifting plates. A pressing block three is fixedly connected to the outer side of the moving block and below the lifting plate. Multiple sets of transmission plates are slidably connected above the lifting plate. A pressing rod one is slidably connected above the passive push plate. A groove is formed on the outer side of the pressing rod one. A round rod is fixedly connected to the inner side of the transmission plate and inside the groove. An extension plate one is fixedly connected to the outer side of the pressing rod one. An extension plate two is fixedly connected above the passive push plate. A spring three is fixedly connected between the extension plate one and the extension plate two. A pressing plate is slidably connected above the passive push plate. A support plate is fixedly connected above the pressing plate. A cleaning rod is fixedly connected to the inner side of the support plate. A spring four is fixedly connected between the support plate and the rectangular plate.

6. The laser detection device for preventing filter plate misalignment in a belt filter press according to claim 5, characterized in that, The groove is inclinedly opened on the outside of the extrusion rod one, the extrusion plate is in contact with the extrusion rod one, and the side of the extrusion plate in contact with the extrusion rod one is set as an inclined surface.

7. A laser detection device for preventing filter plate misalignment in a belt filter press according to claim 6, characterized in that, The cleaning rod is a hollow structure, and multiple sets of openings are provided on the outer side of the cleaning rod. The multiple sets of openings are evenly distributed on the outer side of the cleaning rod. The cleaning rod and the openings are on the same straight line. Multiple sets of arc-shaped plates are fixedly connected to the lower part of the lifting plate. The multiple sets of arc-shaped plates are evenly distributed below the lifting plate.

8. A laser detection device for preventing filter plate misalignment in a belt filter press according to claim 7, characterized in that, An opening 1 is provided on the outer side of the passive push plate. A housing is fixedly connected to the upper part of the filter press body and inside the opening 1. A prompting rod is slidably connected to the inner side of the housing. A spring 5 is fixedly connected between the lower part of the prompting rod and the bottom of the inner side of the housing. A protrusion is fixedly connected to the upper part of the prompting rod. An mounting plate 2 is fixedly connected to the upper part of the passive push plate. Two sets of rectangular rods 1 are fixedly connected to the outer side of the mounting plate 2. A sliding rod is slidably connected to the inner side of the rectangular rod 1. A rectangular rod 2 is slidably connected to the outer side of the sliding rod. A spring 6 is fixedly connected between the rectangular rod 2 and the rectangular rod 1. The spring 6 is sleeved on the outer side of the sliding rod. A baffle plate is fixedly connected to the outer side of the two sets of rectangular rods 1.

9. A laser detection device for preventing filter plate misalignment in a belt filter press according to claim 8, characterized in that, The outer side of the baffle plate has an opening two, the area of ​​which is the same as the area of ​​the upper surface of the protrusion, and the protrusion is on the inner side of the baffle plate.

Images