Plc control cabinet with dustproof structure

Abstract

This invention discloses a PLC control cabinet with a dustproof structure, belonging to the field of PLC control cabinet technology. It includes a cabinet body, a fixed box fixedly connected to the cabinet body, a partition fixedly connected to the inner wall of the fixed box, and a dustproof mechanism. Through the setting of an adjustment unit, the invention activates a hydraulic cylinder that drives a first gear, a rotating shaft, and a fixed rod to rotate via a first rack. The rotation of the fixed rod drives an L-shaped rod and a movable plate to move via a connecting rod, thereby increasing the air intake area. The rotating unit drives a sliding plate and a connecting plate to reciprocate, guiding air into the cleaning brush through a one-way air outlet pipe and a connecting hose. This allows the nozzle to blow air onto the strip-shaped dustproof mesh. The movement of the L-shaped rod drives a strip-shaped inclined ring, a sliding rod, a sliding plate, a slide rail, and a connecting plate to move via a squeezing rod, thereby increasing the air storage space inside the housing and thus increasing the blowing intensity. This achieves adaptive increase in blowing intensity when the air intake area is increased, improving the cleaning effect on the cleaning brush.

Description

Technical Field

[0001] This invention relates to the field of PLC control cabinet technology, and in particular to a PLC control cabinet with a dustproof structure. Background Technology

[0002] PLC control cabinets are widely used in industrial automation control systems, integrating a large number of electronic components and circuit modules. Dust in the air can easily enter the cabinet through the ventilation vents, seriously affecting the operational reliability and service life of the control cabinet. Therefore, dustproof design is a crucial aspect of the PLC control cabinet structure.

[0003] A search revealed Chinese patent CN118139322A, which discloses an integrated PLC control cabinet. The cabinet includes a PLC control body with a convenient dustproof mesh opening mechanism on its side. An adjustable panel spacing mechanism is installed inside the cabinet. A top cover is installed on the upper part of the cabinet, and a door panel is installed on the other side. The convenient dustproof mesh opening mechanism allows for easy opening of the dustproof mesh, facilitating the cleaning of dust adhering to the cooling fan and preventing dust blockage that could reduce the cooling efficiency of the fan.

[0004] Based on the above research and existing technology, it was found that the heat generation of a PLC control cabinet is not constant. When the load inside the cabinet increases or the ambient temperature rises, the internal temperature may rise rapidly. This necessitates increasing the airflow to enhance heat dissipation. However, increasing the airflow means that the air velocity and dust volume carried by the airflow through the dust filter per unit time increase simultaneously, significantly accelerating the dust accumulation rate on the filter surface. If the original fixed intensity or fixed cycle of cleaning is still used, problems of untimely and incomplete cleaning easily occur. The existing cleaning intensity is out of sync with the actual needs of the air inlet, failing to automatically enhance cleaning capacity as the air inlet area or air velocity increases due to increased heat dissipation demands. This limits the heat dissipation performance of the control cabinet under high heat load conditions and also reduces the long-term reliability of the dust filter. Summary of the Invention

[0005] The purpose of this invention is to provide a PLC control cabinet with a dustproof structure to solve the problems mentioned in the background art.

[0006] The technical solution of this invention is: a PLC control cabinet with a dustproof structure, comprising a cabinet body, a connected fixed box fixedly mounted on the cabinet body, a partition fixedly connected to the inner wall of the fixed box, and further comprising:

[0007] A dustproof mechanism, which is located on a fixed box;

[0008] The dustproof mechanism includes an adjustment unit, a rotation unit, and a dust removal unit. The adjustment unit includes a housing fixedly connected to the top of a fixed box. An adjustment plate is slidably connected to the inner wall of the housing. A slide rail is fixedly connected to the bottom of the adjustment plate. A sliding plate is slidably connected to the inner wall of the housing. A connecting plate is slidably connected to the sliding plate and slidably connected to the slide rail. A sliding rod is fixedly connected to the top of the adjustment plate and slidably connected to the housing. A strip-shaped inclined ring is fixedly connected to the top of the sliding rod. A one-way air outlet pipe is fixedly connected to the housing. A connecting hose is fixedly connected to the bottom end of the one-way air outlet pipe. A connecting hose is fixedly connected to the bottom end of the connecting hose. The cleaning brush has multiple nozzles fixedly connected to it. A hydraulic cylinder is fixedly connected to the top of the fixed box. A first rack is fixedly connected to the output end of the hydraulic cylinder. A rotating shaft is rotatably connected to the fixed box. A first gear is fixedly connected to the top of the rotating shaft. The first gear meshes with the first rack. Two fixed rods are fixedly connected to the bottom of the rotating shaft. Two movable plates are slidably connected to the partition. An L-shaped rod is fixedly connected to each of the two movable plates. A connecting rod is rotatably connected to one end of each of the two L-shaped rods and one end of the two fixed rods. A pressing rod is fixedly connected to one of the L-shaped rods. One end of the pressing rod extends into the strip-shaped inclined ring.

[0009] Preferably, the rotating unit includes a fixed shell fixedly connected to a fixed box, a motor fixedly connected to the bottom of the fixed shell, a drive roller fixedly connected to the output end of the motor, the drive roller rotatably connected to the fixed shell, an mounting shell fixedly connected to the fixed box, a rotating roller rotatably connected to the mounting shell, a strip-shaped dustproof net being tensioned and sleeved on the rotating roller and the drive roller, the cleaning brush contacting the strip-shaped dustproof net, one end of a one-way air outlet fixedly connected to the fixed shell, and an air outlet being provided on the fixed shell.

[0010] Preferably, a turntable is fixedly connected to the top of the rotating roller, a cylindrical rod is eccentrically fixedly connected to the top of the turntable, a T-shaped rod is slidably connected to the housing, a strip-shaped hole is opened on the T-shaped rod, the top of the cylindrical rod extends into the strip-shaped hole, a sliding plate is fixedly connected to the T-shaped rod, a second rack is fixedly connected to one end of the T-shaped rod, a rotating sleeve is rotatably connected to both the drive roller and the fixed housing, a second gear is fixedly connected to the rotating sleeve, the second gear meshes with the second rack, a bracket is fixedly connected to the rotating sleeve, and the bottom end of the bracket is fixedly connected to the cleaning brush.

[0011] Preferably, the fixing box has two mounting holes, and the strip-shaped dustproof net passes through the two mounting holes.

[0012] Preferably, a one-way air inlet pipe is fixedly connected to the housing, a sliding block is slidably connected to the fixed box, and the extrusion rod is fixedly connected to the sliding block.

[0013] Preferably, an air inlet pipe is fixedly connected to the fixed box, and a fan is installed inside the air inlet pipe.

[0014] Preferably, the dust removal unit includes an air outlet opened on the fixed box, the air outlet is connected to the fixed shell, a sliding baffle is slidably connected inside the fixed box, one end of the sliding baffle extends into the air outlet, a bending rod is fixedly connected to the sliding baffle, and the bending rod is in contact with the squeezing rod.

[0015] Preferably, a compression spring is fixedly connected to the other end of the sliding baffle, and one end of the compression spring is fixedly connected to the fixed box.

[0016] Preferably, an air outlet duct is fixedly connected to the cabinet, and a circular dustproof net is fixedly connected to the inner wall of the air outlet duct.

[0017] This invention provides a PLC control cabinet with a dustproof structure, which has the following improvements and advantages compared with the prior art:

[0018] Firstly, this invention, through the setting of the adjustment unit, activates the hydraulic cylinder, which drives the first gear, rotating shaft, and fixed rod to rotate via the first rack. The rotation of the fixed rod drives the L-shaped rod and movable plate to move via the connecting rod, causing the two movable plates to move away from each other simultaneously, thereby increasing the air intake area. The rotating unit drives the sliding plate and connecting plate to move back and forth, drawing in air through the one-way air intake pipe, and then guiding the air into the cleaning brush through the one-way air outlet pipe and connecting hose, so that the nozzle blows air onto the strip-shaped dustproof net. The movement of the L-shaped rod drives the strip-shaped inclined ring, sliding rod, and sliding plate to move upward via the extrusion rod. The movement of the sliding plate drives the slide rail and connecting plate to move, thereby increasing the air storage space inside the housing, thus increasing the blowing intensity. This achieves adaptive increase in blowing intensity when the air intake area is increased, improving the cleaning effect on the cleaning brush.

[0019] Secondly, this invention, through the setting of a rotating unit, uses a motor to drive the drive roller, the strip dustproof net, and the rotating roller to rotate, so that the air inlet surface of the strip dustproof net can be replaced. The rotation of the rotating roller drives the turntable to rotate, the rotation of the turntable drives the cylindrical rod to rotate circumferentially, the rotation of the cylindrical rod drives the T-shaped rod and the second rack to move back and forth, the reciprocating movement of the second rack drives the second gear, the rotating sleeve, the bracket, and the cleaning brush to swing back and forth, and the reciprocating swing of the cleaning brush can clean the strip dustproof net.

[0020] Thirdly, this invention, through the setting of the dust removal unit, causes the extrusion rod to move, which in turn causes the bending rod to move, which in turn causes the sliding baffle to move. The movement of the sliding baffle causes the extrusion spring to compress and undergo elastic deformation. The movement of the sliding baffle increases the area of ​​the air outlet. When the air enters the fixed box, a small portion of the air is blown into the fixed shell through the air outlet and then blown out from the air outlet. This allows for timely cleaning of the dust inside the fixed shell. The air blown in from the air outlet can pre-clean the strip-shaped dustproof net, thereby increasing the area of ​​the air outlet and improving the dust removal effect. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the dustproof mechanism in this invention;

[0024] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the fixed box in this invention;

[0025] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the fixed shell in this invention;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the adjustment unit in this invention;

[0027] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the shell in this invention;

[0028] Figure 7 This is a schematic cross-sectional view of the cleaning brush and nozzle assembly in this invention.

[0029] Figure label:

[0030] 1. Cabinet; 11. Fixed box; 12. Partition; 13. Movable plate; 14. Hydraulic cylinder; 15. First rack; 16. First gear; 17. Rotating shaft; 18. Fixed rod; 19. Connecting rod; 110. L-shaped rod; 2. Fixed shell; 21. Drive roller; 22. Mounting shell; 23. Rotating roller; 24. Strip dustproof net; 25. Turntable; 26. Cylindrical rod; 27. T-shaped rod; 28. Second rack; 29. ​​Second gear; 210. Rotating sleeve; 211. Cleaning brush; 21 2. Nozzle; 213. Motor; 214. Bracket; 3. Housing; 31. Sliding plate; 32. Connecting plate; 33. Adjusting plate; 34. Slide rail; 35. Sliding rod; 36. Strip-shaped inclined ring; 37. Extrusion rod; 38. One-way air outlet pipe; 39. Connecting hose; 310. One-way air inlet pipe; 311. Sliding block; 4. Air outlet; 41. Sliding baffle; 42. Bending rod; 43. Extrusion spring; 44. Air outlet; 5. Air inlet pipe; 51. Fan; 6. Mounting hole; 7. Air outlet pipe. Detailed Implementation

[0031] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention provides a PLC control cabinet with a dustproof structure through improvements. The technical solution of this invention is as follows:

[0033] like Figures 1 to 7 As shown, this embodiment of the invention provides a PLC control cabinet with a dustproof structure, including a cabinet body 1, a fixed box 11 connected to the cabinet body 1, a partition 12 fixedly connected to the inner wall of the fixed box 11, and further including:

[0034] Dustproof mechanism, the dustproof mechanism is located on the fixed box 11;

[0035] The dust control mechanism includes an adjustment unit, a rotation unit, and a dust removal unit. The adjustment unit includes a housing 3 fixedly connected to the top of the fixed box 11. An adjustment plate 33 is slidably connected to the inner wall of the housing 3. A slide rail 34 is fixedly connected to the bottom of the adjustment plate 33. A sliding plate 31 is slidably connected to the inner wall of the housing 3. A connecting plate 32 is slidably connected to the sliding plate 31 and slidably connected to the slide rail 34. A sliding rod 35 is fixedly connected to the top of the adjustment plate 33 and slidably connected to the housing 3. A strip-shaped inclined ring 36 is fixedly connected to the top of the sliding rod 35. A one-way exhaust pipe 38 is fixedly connected to the housing 3. The bottom end of the air pipe 38 is fixedly connected to a connecting hose 39, and the bottom end of the connecting hose 39 is fixedly connected to a cleaning brush 211. Multiple nozzles 212 are fixedly connected to the cleaning brush 211. A hydraulic cylinder 14 is fixedly connected to the top of the fixed box 11, and a first rack 15 is fixedly connected to the output end of the hydraulic cylinder 14. A rotating shaft 17 is rotatably connected to the fixed box 11, and a first gear 16 is fixedly connected to the top end of the rotating shaft 17. The first gear 16 meshes with the first rack 15. Two fixed rods 18 are fixedly connected to the bottom end of the rotating shaft 17. Two movable plates 13 are slidably connected to the partition 12, and both movable plates 13 are fixedly connected to... Two L-shaped rods 110 are fixedly connected, and two L-shaped rods 110 are rotatably connected to one end of two fixed rods 18 via a connecting rod 19. One L-shaped rod 110 is fixedly connected to a pressing rod 37, one end of which extends into the strip-shaped inclined ring 36. Through the adjustment unit, the hydraulic cylinder 14 drives the first gear 16, rotating shaft 17, and fixed rod 18 to rotate via the first rack 15. The rotation of the fixed rod 18 drives the L-shaped rod 110 and the movable plate 13 to move via the connecting rod 19, causing the two movable plates 13 to move away from each other simultaneously, thereby increasing the air intake area. The rotating unit drives the sliding plate 31 and... The connecting plate 32 moves back and forth, drawing in air through the one-way air inlet pipe 310, and then guiding the air into the cleaning brush 211 through the one-way air outlet pipe 38 and the connecting hose 39, so that the nozzle 212 blows air onto the strip dustproof net 24. The L-shaped rod 110 moves, driving the strip-shaped inclined ring 36, the sliding rod 35 and the sliding plate 31 to move upward through the squeezing rod 37. The movement of the sliding plate 31 drives the slide rail 34 and the connecting plate 32 to move, thereby increasing the air storage space inside the housing 3, thereby increasing the blowing intensity. This achieves an adaptive increase in blowing intensity when the air intake area is increased, improving the cleaning effect on the cleaning brush 211.

[0036] Furthermore, the rotating unit includes a fixed housing 2 fixedly connected to the fixed box 11. A motor 213 is fixedly connected to the bottom of the fixed housing 2. A drive roller 21 is fixedly connected to the output end of the motor 213. The drive roller 21 is rotatably connected to the fixed housing 2. A mounting housing 22 is fixedly connected to the fixed box 11. A rotating roller 23 is rotatably connected to the mounting housing 22. A strip-shaped dustproof net 24 is tensioned and sleeved on both the rotating roller 23 and the drive roller 21. A cleaning brush 211 is in contact with the strip-shaped dustproof net 24. One end of a one-way air outlet pipe 38 is fixedly connected to the fixed housing 2. An air outlet 44 is provided on the fixed housing 2. A turntable 25 is fixedly connected to the top of the rotating roller 23. A cylindrical rod 26 is eccentrically fixedly connected to the top of the turntable 25. A T-shaped rod 27 is slidably connected to the housing 3. A strip-shaped hole is provided on the T-shaped rod 27. The top end of the cylindrical rod 26 extends into the strip-shaped hole. A sliding plate 31 is fixedly connected to the T-shaped rod 27. One end of the T-shaped rod 27 is fixedly connected to... A second rack 28 is connected to the drive roller 21 and the fixed housing 2, and a rotating sleeve 210 is rotatably connected to the drive roller 21. A second gear 29 is fixedly connected to the rotating sleeve 210, and the second gear 29 meshes with the second rack 28. A bracket 214 is fixedly connected to the rotating sleeve 210, and the bottom end of the bracket 214 is fixedly connected to the cleaning brush 211. Through the setting of the rotating unit, the motor 213 drives the drive roller 21, the strip dustproof net 24 and the rotating roller 23 to rotate, so that the air inlet surface of the strip dustproof net 24 can be changed. The rotation of the rotating roller 23 drives the turntable 25 to rotate, the rotation of the turntable 25 drives the cylindrical rod 26 to rotate in a circle, the rotation of the cylindrical rod 26 drives the T-shaped rod 27 and the second rack 28 to move back and forth. The reciprocating movement of the second rack 28 drives the second gear 29, the rotating sleeve 210, the bracket 214 and the cleaning brush 211 to swing back and forth. The reciprocating swing of the cleaning brush 211 can clean the strip dustproof net 24.

[0037] Furthermore, two mounting holes 6 are provided on the fixed box 11, and the strip dustproof net 24 passes through the two mounting holes 6; the mounting holes 6 facilitate the placement of the strip dustproof net 24.

[0038] Furthermore, a one-way air inlet pipe 310 is fixedly connected to the housing 3, and a sliding block 311 is slidably connected to the fixed box 11. The extrusion rod 37 is fixedly connected to the sliding block 311. The stability of the extrusion rod 37 is improved by setting the sliding block 311.

[0039] Furthermore, an air inlet pipe 5 is fixedly connected to the fixed box 11, and a fan 51 is installed inside the air inlet pipe 5; through the setting of the air inlet pipe 5, the fan 51 blows outside air into the cabinet 1 through the air inlet pipe 5 and the fixed box 11, thereby dissipating heat from the cabinet 1.

[0040] Furthermore, the dust removal unit includes an air outlet 4 opened on the fixed box 11, the air outlet 4 being connected to the fixed shell 2, a sliding baffle 41 being slidably connected inside the fixed box 11, one end of the sliding baffle 41 extending into the air outlet 4, a bent rod 42 being fixedly connected to the sliding baffle 41, the bent rod 42 being in contact with the pressing rod 37, and a pressing spring 43 being fixedly connected to the other end of the sliding baffle 41, one end of the pressing spring 43 being fixedly connected to the fixed box 11; through the arrangement of the dust removal unit, the pressing rod 37 moves, driving the bent rod 4 2. The movement of the bending rod 42 causes the sliding baffle 41 to move. The movement of the sliding baffle 41 causes the compression spring 43 to compress and undergo elastic deformation. The movement of the sliding baffle 41 increases the area of ​​the air outlet 4. When the air enters the fixed box 11, a small part of the air is blown into the fixed shell 2 through the air outlet 4 and then blown out from the air outlet 44. This allows for timely cleaning of the dust inside the fixed shell 2. The air blown in from the air outlet 4 can pre-clean the strip dustproof net 24, thereby increasing the area of ​​the air outlet 4 and improving the dust removal effect.

[0041] Furthermore, an air outlet duct 7 is fixedly connected to the cabinet 1, and a circular dustproof net is fixedly connected to the inner wall of the air outlet duct 7; through the setting of the air outlet duct 7, the air entering the cabinet 1 is discharged from the air outlet duct 7.

[0042] Specific implementation steps: The fan 51 blows outside air into the cabinet 1 through the air inlet pipe 5 and the fixed box 11, and then exhausts the air through the air outlet pipe 7, thereby dissipating heat from the cabinet 1. The strip dustproof net 24 filters dust in the air. When the power of the fan 51 is increased, the hydraulic cylinder 14 is activated to move the first rack 15 towards the housing 3. The movement of the first rack 15 drives the first gear 16 and the rotating shaft 17 to rotate. The rotation of the rotating shaft 17 drives the two fixed rods 18 to rotate. The rotation of the fixed rods 18 drives the L-shaped rod 110 and the movable plate 13 to move through the connecting rod 19, so that the two movable plates 13 move away from each other at the same time, thereby increasing the cooling effect. The air intake area improves the heat dissipation of cabinet 1. Motor 213 drives drive roller 21, strip dustproof mesh 24 and rotating roller 23 to rotate, so that the air intake surface of strip dustproof mesh 24 can be replaced. The rotation of rotating roller 23 drives turntable 25 to rotate, turntable 25 drives cylindrical rod 26 to rotate circumferentially, cylindrical rod 26 drives T-shaped rod 27 and second rack 28 to reciprocate, second rack 28 reciprocates, drives second gear 29, rotating sleeve 210, bracket 214 and cleaning brush 211 to oscillate, cleaning brush 211 oscillates to clean strip dustproof mesh 24, T-shaped rod 27 moves to drive sliding plate 3 The L-shaped rod 110 moves back and forth, drawing air in through the one-way air inlet pipe 310, and then guiding the air into the cleaning brush 211 through the one-way air outlet pipe 38 and the connecting hose 39. This causes the nozzle 212 to blow air onto the strip dustproof net 24, achieving cleaning of the strip dustproof net 24 by brushing and blowing air. The movement of the L-shaped rod 110 drives the extrusion rod 37 to move, which in turn drives the strip-shaped inclined ring 36, the sliding rod 35, and the sliding plate 31 to move upward. The movement of the sliding plate 31 drives the slide rail 34 and the connecting plate 32 to move, thereby increasing the air storage space inside the housing 3, which in turn increases the blowing intensity. This achieves the effect of increasing the air intake area while increasing the air storage space. The adaptive increase in airflow intensity improves the cleaning effect on the cleaning brush 211. The movement of the extrusion rod 37 drives the bending rod 42 to move, which in turn drives the sliding baffle 41 to move. The movement of the sliding baffle 41 compresses the extrusion spring 43 and causes it to undergo elastic deformation. The movement of the sliding baffle 41 increases the area of ​​the air outlet 4. When the air enters the fixed box 11, a small portion of the air is blown into the fixed shell 2 through the air outlet 4 and then blown out from the air outlet 44. This allows for timely cleaning of the dust inside the fixed shell 2. The air blown in from the air outlet 4 can pre-clean the strip dustproof net 24, thereby increasing the area of ​​the air outlet 4 and improving the dust removal effect.

[0043] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A PLC control cabinet with a dustproof structure, comprising a cabinet body (1), characterized in that: The cabinet (1) is fixed with a connected fixed box (11), and the inner wall of the fixed box (11) is fixedly connected with a partition (12), and also includes: A dustproof mechanism, which is located on a fixed box (11); The dustproof mechanism includes an adjustment unit, a rotation unit, and a dust removal unit. The adjustment unit includes a housing (3) fixedly connected to the top of the fixed box (11). An adjustment plate (33) is slidably connected to the inner wall of the housing (3). A slide rail (34) is fixedly connected to the bottom of the adjustment plate (33). A sliding plate (31) is slidably connected to the inner wall of the housing (3). A connecting plate (32) is slidably connected to the sliding plate (31). The connecting plate (32) is slidably connected to the slide rail (34). A sliding rod (35) is fixedly connected to the top of the adjustment plate (33). The sliding rod (35) is slidably connected to the housing (3). A strip-shaped inclined ring (36) is fixedly connected to the top of the sliding rod (35). A one-way air outlet pipe (38) is fixedly connected to the housing (3). A connecting hose (39) is fixedly connected to the bottom end of the one-way air outlet pipe (38). A cleaning brush (211) is fixedly connected to the bottom end of the connecting hose (39). (211) has multiple nozzles (212) fixedly connected to it. A hydraulic cylinder (14) is fixedly connected to the top of the fixed box (11). A first rack (15) is fixedly connected to the output end of the hydraulic cylinder (14). A rotating shaft (17) is rotatably connected to the fixed box (11). A first gear (16) is fixedly connected to the top of the rotating shaft (17). The first gear (16) meshes with the first rack (15). Two fixed rods (18) are fixedly connected to the bottom end of the rotating shaft (17). Two movable plates (13) are slidably connected to the partition (12). An L-shaped rod (110) is fixedly connected to each of the two movable plates (13). A connecting rod (19) is rotatably connected to one end of each of the two L-shaped rods (110) and one end of each of the two fixed rods (18). A pressing rod (37) is fixedly connected to one of the L-shaped rods (110). One end of the pressing rod (37) extends into the strip-shaped inclined ring (36).

2. A PLC control cabinet with a dustproof structure according to claim 1, characterized in that: The rotating unit includes a fixed shell (2) fixedly connected to a fixed box (11). A motor (213) is fixedly connected to the bottom of the fixed shell (2). A drive roller (21) is fixedly connected to the output end of the motor (213). The drive roller (21) is rotatably connected to the fixed shell (2). An installation shell (22) is fixedly connected to the fixed box (11). A rotating roller (23) is rotatably connected to the installation shell (22). A strip dustproof net (24) is tensioned and sleeved on the rotating roller (23) and the drive roller (21). The cleaning brush (211) is in contact with the strip dustproof net (24). One end of a one-way air outlet pipe (38) is fixedly connected to the fixed shell (2). An air outlet (44) is opened on the fixed shell (2).

3. A PLC control cabinet with a dustproof structure according to claim 2, characterized in that: The top of the rotating roller (23) is fixedly connected to a turntable (25), and the top of the turntable (25) is eccentrically fixedly connected to a cylindrical rod (26). A T-shaped rod (27) is slidably connected to the housing (3). A strip hole is opened on the T-shaped rod (27). The top of the cylindrical rod (26) extends into the strip hole. The sliding plate (31) is fixedly connected to the T-shaped rod (27). A second rack (28) is fixedly connected to one end of the T-shaped rod (27). A rotating sleeve (210) is rotatably connected to both the driving roller (21) and the fixed housing (2). A second gear (29) is fixedly connected to the rotating sleeve (210). The second gear (29) meshes with the second rack (28). A bracket (214) is fixedly connected to the rotating sleeve (210). The bottom end of the bracket (214) is fixedly connected to the cleaning brush (211).

4. A PLC control cabinet with a dustproof structure according to claim 3, characterized in that: The fixed box (11) has two mounting holes (6), and the strip dustproof net (24) passes through the two mounting holes (6).

5. A PLC control cabinet with a dustproof structure according to claim 3, characterized in that: A one-way air inlet pipe (310) is fixedly connected to the housing (3), a sliding block (311) is slidably connected to the fixed box (11), and the extrusion rod (37) is fixedly connected to the sliding block (311).

6. A PLC control cabinet with a dustproof structure according to claim 3, characterized in that: An air inlet pipe (5) is fixedly connected to the fixed box (11), and a fan (51) is installed inside the air inlet pipe (5).

7. A PLC control cabinet with a dustproof structure according to claim 3, characterized in that: The dust removal unit includes an air outlet (4) opened on a fixed box (11), the air outlet (4) is connected to the fixed shell (2), a sliding baffle (41) is slidably connected inside the fixed box (11), one end of the sliding baffle (41) extends into the air outlet (4), a bending rod (42) is fixedly connected on the sliding baffle (41), and the bending rod (42) is in contact with the squeezing rod (37).

8. A PLC control cabinet with a dustproof structure according to claim 7, characterized in that: The other end of the sliding baffle (41) is fixedly connected to a compression spring (43), and one end of the compression spring (43) is fixedly connected to the fixed box (11).

9. A PLC control cabinet with a dustproof structure according to any one of claims 1-8, characterized in that: An air outlet pipe (7) is fixedly connected to the cabinet (1), and a circular dustproof net is fixedly connected to the inner wall of the air outlet pipe (7).

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