PLC (Programmable Logic Controller) control equipment with self-processing function

Abstract

The invention discloses PLC control equipment with a self-processing function. The PLC control equipment comprises a control cabinet, an air inlet, a filtering mechanism and a filter screen fixing mechanism. And side plates are arranged on two side walls of the control cabinet. And the air inlet is formed in the side plate. The filtering mechanism is mounted on the side plate and comprises a mounting frame, a filter screen, a cleaning roller, a threaded brush roller, an inner frame and a transmission assembly, the mounting frame is fixed to the side plate and arranged at the air inlet, a transmission shaft is rotationally arranged at the top end of the mounting frame, and a first auxiliary gear and a rotating part are rotationally arranged on the two inner side walls of the bottom end of the mounting frame correspondingly; a second auxiliary gear is fixed to the rotating piece, the filter screen rotates on the transmission shaft, the first auxiliary gear and the second auxiliary gear, and the cleaning roller rotates on the mounting frame and is attached to the outer side wall of the bottom end of the filter screen. Through related structural design, the filter screen can be automatically cleaned at regular intervals, so that the ventilation effect in the control cabinet is guaranteed, and stable operation of electronic elements in the control cabinet is guaranteed.

Description

Technical Field

[0001] This invention belongs to the technical field of PLC control equipment, specifically relating to a PLC control equipment with self-processing function. Background Technology

[0002] PLC control equipment refers to programmable control cabinets. PLC control equipment has protection functions such as overload, short circuit, and phase loss protection. It has the advantages of compact structure, stable operation, and complete functions. It can be combined according to the actual control scale to achieve single-cabinet automatic control or multiple cabinets forming a distributed control system via industrial Ethernet or industrial fieldbus networks. The electronic components in PLC control equipment generate a lot of heat during operation. To ensure the stable operation of the electronic components, air inlets and outlets are usually installed on the PLC control equipment cabinet, and cooling fans are used to exchange heat within the PLC control equipment, thereby achieving a cooling effect on the electronic components.

[0003] When PLC control equipment operates in a dusty environment, dust from the air is drawn into the PLC by the cooling fan. Excessive dust accumulation on the electronic components inside the PLC can directly affect their operation. Therefore, filters are typically installed at the air inlet of PLC control equipment. However, currently, these filters do not automatically clean themselves, and over time, they become clogged with dust, reducing the airflow and ultimately significantly decreasing the heat dissipation efficiency of the PLC control equipment.

[0004] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a PLC control device with self-processing function.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a PLC control device with self-cleaning function, which can solve the problem that the air inlet filter of existing PLC control devices cannot be automatically cleaned.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution:

[0008] A PLC control device with self-processing function includes: a control cabinet, an air inlet, a filtration mechanism, and a filter fixing mechanism.

[0009] The control cabinet has side panels on both sides of its side walls. The air inlet is cut into the side panel.

[0010] The filtration mechanism is mounted on the side plate and includes: a mounting frame, a filter screen, a cleaning roller, a threaded brush roller, an inner frame, and a transmission assembly. The mounting frame is fixed to the side plate and located at the air inlet. A transmission shaft is rotatably mounted on the top of the mounting frame. A first auxiliary gear and a rotating component are rotatably mounted on the two inner side walls at the bottom of the mounting frame, respectively. A second auxiliary gear is fixed on the rotating component. The filter screen rotates on the transmission shaft, the first auxiliary gear, and the second auxiliary gear. The cleaning roller rotates on the mounting frame and is attached to the outer side wall at the bottom of the filter screen. The threaded brush roller rotates on the mounting frame and is attached to the inner side wall at the bottom of the filter screen. A dust collection basket is provided at the bottom of the cleaning roller. The inner frame is fixed inside the mounting frame and located inside the filter screen. The inner frame corresponds to the air inlet. The transmission assembly is mounted on the mounting frame and is used to drive the transmission shaft, the cleaning roller, and the threaded brush roller to rotate.

[0011] The filter screen fixing mechanism is installed inside the inner frame and is used to clamp the filter screen.

[0012] In one embodiment of the present invention, a cabinet door is provided on the front side of the control cabinet, and a control panel and a display panel are provided on the cabinet door. The control panel is used to control the device, and the display panel is used to display control information.

[0013] In one embodiment of the present invention, a second bearing and a first bearing are respectively fixed on the two inner sidewalls of the bottom end of the mounting frame. The first auxiliary gear and the rotating component rotate outside the second bearing and the first bearing, respectively, and the two ends of the threaded brush roller rotate inside the second bearing and the first bearing, respectively. The first auxiliary gear and the rotating component rotate on the inner sidewall of the mounting frame through the second bearing and the first bearing, respectively. In addition, since the two sides of the bottom end of the filter screen rotate on the first auxiliary gear and the second auxiliary gear, the two ends of the threaded brush roller rotate inside the second bearing and the first bearing, respectively, thereby causing the threaded brush roller to adhere to the inner sidewall of the bottom end of the filter screen.

[0014] In one embodiment of the present invention, the rotating component is provided with a plurality of drainage grooves. When the threaded brush roller rotates, it delivers larger dust particles toward the direction bolt of the rotating component. After the dust enters the rotating component, it falls into the dust collection basket at the bottom through the drainage grooves.

[0015] In one embodiment of the present invention, a pair of first transmission gears are fixed on the transmission shaft, and teeth are fixed on the inner walls of both ends of the filter screen. Each pair of teeth meshes with the pair of first transmission gears, the first auxiliary gear, and the second auxiliary gear. When the first transmission gears rotate, they drive the filter screen to rotate via the transmission shaft and the teeth. The rotation of the filter screen also drives the first and second auxiliary gears to rotate via the teeth. The first and second auxiliary gears are primarily located at the bottom of the filter screen, providing support and assisting in its rotation.

[0016] In one embodiment of the present invention, the transmission assembly includes: a drive motor, a pair of second transmission gears, a transmission belt, and a pair of spur gears. The drive motor is fixed to one end of the transmission shaft located outside the control cabinet, and the drive motor is also fixed to the outer wall of the mounting frame. The pair of second transmission gears are respectively fixed to the ends of the transmission shaft and the cleaning roller located outside the mounting frame. The transmission belt is mounted on the pair of second transmission gears. The pair of spur gears are respectively fixed to the ends of the cleaning roller and the threaded brush roller extending outside the transmission belt, and the pair of spur gears mesh with each other.

[0017] When the drive motor rotates the transmission shaft clockwise, the transmission shaft, through a pair of second transmission gears and a transmission belt, drives the cleaning roller to rotate clockwise. The transmission shaft, in turn, drives the filter screen to rotate clockwise through a pair of first transmission gears. As the cleaning roller rotates, it drives the threaded brush roller to rotate counter-clockwise through a pair of spur gears. Because the cleaning roller is attached to the outer wall of the bottom end of the filter screen, and the threaded brush roller is attached to the inner wall of the bottom end of the filter screen, both the cleaning roller and the threaded brush roller rotate in opposite directions towards the inner and outer walls of the filter screen. Therefore, the cleaning roller and the threaded brush roller can more effectively clean the dust from the inner and outer walls of the filter screen.

[0018] In one embodiment of the present invention, the filter fixing mechanism includes: a pair of clamping frames, a pair of fixing frames, a spreading assembly, and a pair of tension springs. One end of each pair of clamping frames is rotatably mounted on the side wall of the inner frame. The pair of fixing frames are respectively fixed to the air inlet and the mounting frame. The spreading assembly is installed on the end of the inner frame away from the rotatable connection between the pair of clamping frames and the inner frame, and is used to spread the pair of clamping frames to both sides. The pair of tension springs are each installed between the pair of clamping frames and are located at the end of the clamping frames near the spreading assembly.

[0019] When the filter screen is not cleaned, the spreading assembly opens one side of the pair of clamping frames to both sides, thereby clamping the filter screen on both sides together with the pair of fixing frames. When the filter screen needs to be cleaned, the spreading assembly releases one end of the pair of clamping frames. Then, the tension of the pair of tension springs pulls the pair of clamping frames inward, thereby releasing the filter screen on both sides. The filter screen can then be rotated for cleaning.

[0020] In one embodiment of the present invention, one end of each pair of clamping frames is fixed with a rotating shaft, and the pair of rotating shafts rotate on the inner sidewall of the inner frame. The pair of clamping frames rotate on the inner sidewall of the inner frame respectively through the pair of rotating shafts.

[0021] In one embodiment of the present invention, the spreading assembly includes: two pairs of fixed rods, a control plate, a pair of conical pushers, and a telescopic cylinder. The two pairs of fixed rods are respectively fixed to the ends of a pair of clamping frames away from the rotating shaft, and pulleys are rotatably mounted on each pair of fixed rods. The control plate slides on the side wall of the inner frame, and a fixed head is fixed to one end located outside the inner frame. The pair of conical pushers are each fixed to the end of the control plate located inside the inner frame, and the pair of conical pushers are respectively located between the two pairs of pulleys. The telescopic cylinder is fixed to the outer wall of the mounting frame, and the top end of the telescopic cylinder's telescopic rod is fixed to the fixed head.

[0022] When it is necessary to clamp both sides of the filter screen, the telescopic cylinder drives the control plate to move in the direction of the telescopic cylinder through the fixed head. The control plate drives a pair of conical pushers to move in the direction of the telescopic cylinder. When the pair of control plates move, they slide on the outer walls of the pair of control plates through two pairs of pulleys, thereby rotating the pair of clamping frames outward, so that the pair of clamping frames clamp both sides of the filter screen with the pair of fixed frames respectively.

[0023] In one embodiment of the present invention, a pair of hook plates are fixed on both sides of the end of the pair of conical pushers away from the control plate. The hook plates are used to hook onto the pair of pulleys after the conical pushers spread the pair of pulleys to both sides, so as to prevent the pulleys from slipping off from both ends of the conical pushers.

[0024] Compared with existing technologies, the PLC control device of the present invention, which has a self-cleaning function, uses a rotatable filter screen. While the filter screen rotates, a cleaning roller and a threaded brush roller simultaneously rotate in opposite directions towards the inner and outer walls of the filter screen, effectively cleaning both the inner and outer walls of the filter screen during rotation. This enables periodic automatic cleaning of the filter screen, ensuring effective ventilation within the control cabinet and stable operation of the electronic components inside. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a perspective view of a PLC control device with self-processing function according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the filtration mechanism in one embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the filtering mechanism from another perspective in one embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the filter screen, cleaning roller, and spiral brush roller in one embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the mounting frame and filter fixing mechanism in one embodiment of the present invention;

[0031] Figure 6 for Figure 5 The structural diagram shown at point A in the middle;

[0032] Figure 7 This is a schematic diagram of the mounting frame and filter fixing mechanism from another perspective in one embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the filter screen fixing mechanism in one embodiment of the present invention.

[0034] Explanation of key figure labels:

[0035] 1-Control cabinet, 101-Cabinet door, 102-Side panel, 103-Air inlet, 2-Filter mechanism, 201-Mounting frame, 202-Filter screen, 203-Drive shaft, 204-First drive gear, 205-First auxiliary gear, 206-Rotating component, 207-Second auxiliary gear, 208-Cleaning roller, 209-Threaded brush roller, 210-Drainage trough, 211-Dust collection basket, 212-Spur gear, 213-Second drive... 214-Gear, 215-Transmission belt, 216-Tooth teeth, 217-Drive motor, 218-Inner frame, 219-First shaft seat, 210-Second shaft seat, 3-Filter screen fixing mechanism, 301-Clamping frame, 302-Rotating shaft, 303-Fixing rod, 304-Pulley, 305-Control panel, 306-Fixing head, 307-Telescopic cylinder, 308-Conical pusher, 309-Hook plate, 310-Tension spring, 311-Fixing frame. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0037] like Figures 1 to 8 As shown, a PLC control device with self-processing function in one embodiment of the present invention includes: a control cabinet 1, an air inlet 103, a filter mechanism 2, and a filter fixing mechanism 3.

[0038] like Figures 1 to 8As shown, side plates 102 are provided on both sides of the control cabinet 1. Air inlets 103 are cut into the side plates 102. A filter mechanism 2 is mounted on the side plates 102. The filter mechanism 2 includes: a mounting frame 201, a filter screen 202, a cleaning roller 208, a threaded brush roller 209, an inner frame 217, and a transmission assembly. The mounting frame 201 is fixed to the side plate 102 and located at the air inlet 103. A transmission shaft 203 is rotatably mounted on the top of the mounting frame 201. A first auxiliary gear 205 and a rotating component 206 are rotatably mounted on the two inner side walls at the bottom of the mounting frame 201, respectively. A second auxiliary gear 207 is fixed on the rotating component 206. The filter screen 202 rotates between the transmission shaft 203 and the first auxiliary gear 207. On the second auxiliary gear 207, the cleaning roller 208 rotates on the mounting frame 201 and is attached to the outer side wall of the bottom end of the filter screen 202. The threaded brush roller 209 rotates on the mounting frame 201 and is attached to the inner side wall of the bottom end of the filter screen 202. A dust collection basket 211 is provided at the bottom of the cleaning roller 208. The inner frame 217 is fixed inside the mounting frame 201 and is located inside the filter screen 202. The inner frame 217 corresponds to the air inlet 103. The transmission assembly is installed on the mounting frame 201 and is used to drive the transmission shaft 203, the cleaning roller 208, and the threaded brush roller 209 to rotate. The filter screen fixing mechanism 3 is installed inside the inner frame 217 and is used to clamp the filter screen 202.

[0039] In practical use, the filter screen 202 is first loosened on both sides by the filter screen fixing mechanism 3. Then, the transmission assembly drives the transmission shaft 203, cleaning roller 208, and threaded brush roller 209 to rotate. The transmission assembly drives the transmission shaft 203 and cleaning roller 208 to rotate in the same direction, while the threaded brush roller 209 rotates in the opposite direction. When the transmission shaft 203 rotates, it drives the filter screen 202 to rotate. When the filter screen 202 rotates, the first auxiliary gear 205 and the second auxiliary gear 207 are located at the bottom of the filter screen 202 to support and assist in the rotation of the filter screen 202. When the transmission assembly drives the cleaning roller 208 and the threaded brush roller 209 to rotate in opposite directions, since the cleaning roller 208 is attached to the outer side wall of the bottom end of the filter screen 202 and the threaded brush roller 209 is attached to the inner side wall of the bottom end of the filter screen 202, the cleaning roller 208 and the threaded brush roller 209 rotate in opposite directions to the outer and inner side walls of the filter screen 202. Therefore, the cleaning roller 208 and the threaded brush roller 209 can more effectively clean the dust on the inner and outer side walls of the filter screen 202.

[0040] When the cleaning roller 208 and the threaded brush roller 209 clean the filter screen 202, the cleaning roller 208 removes dust from the outer wall of the filter screen 202, which falls directly into the dust collection basket 211. The threaded brush roller 209 removes dust from the inner wall of the filter screen 202. Smaller dust particles pass through the holes in the filter screen 202 and fall into the dust collection basket 211, while larger dust particles are conveyed by the spiral of the threaded brush roller 209 to one end of the filter screen 202, and finally discharged from one end of the filter screen 202, falling into the dust collection basket 211 at the bottom. After cleaning, the filter screen 202 is clamped on both sides by the filter screen fixing mechanism 3.

[0041] like Figures 1 to 8 As shown, the front of the control cabinet 1 is provided with a cabinet door 101, and a control panel and a display panel are provided on the cabinet door 101. The control panel is used to control this equipment, and the display panel is used to display control information.

[0042] like Figures 1 to 8 As shown, a second bearing seat 219 and a first bearing seat 218 are fixed on the two inner sidewalls at the bottom of the mounting frame 201, respectively. The first auxiliary gear 205 and the rotating component 206 rotate outside the second bearing seat 219 and the first bearing seat 218, respectively. The two ends of the threaded brush roller 209 rotate inside the second bearing seat 219 and the first bearing seat 218, respectively. The first auxiliary gear 205 and the rotating component 206 rotate on the inner sidewalls of the mounting frame 201 via the second bearing seat 219 and the first bearing seat 218, respectively. In addition, since the two sides of the bottom end of the filter screen 202 rotate on the first auxiliary gear 205 and the second auxiliary gear 207, respectively, the two ends of the threaded brush roller 209 rotate inside the second bearing seat 219 and the first bearing seat 218, respectively, so that the threaded brush roller 209 fits against the inner sidewall of the bottom end of the filter screen 202.

[0043] like Figures 1 to 8As shown, the rotating component 206 has multiple drainage grooves 210. When the threaded brush roller 209 rotates, it delivers larger dust particles towards the rotating component 206. After entering the rotating component 206, the dust falls into the dust collection basket 211 at the bottom through the drainage grooves 210. A pair of first transmission gears 204 are fixed on the drive shaft 203. Teeth 215 are fixed on the inner walls of both ends of the filter screen 202. The pair of teeth 215 mesh with the pair of first transmission gears 204, the first auxiliary gear 205, and the second auxiliary gear 207. When the first transmission gears 204 rotate, they drive the filter screen 202 to rotate through the pair of drive shafts 203 and the pair of teeth 215. When the filter screen 202 rotates, it also drives the first auxiliary gear 205 and the second auxiliary gear 207 to rotate through the pair of teeth 215. The first auxiliary gear 205 and the second auxiliary gear 207 are mainly located at the bottom of the filter screen 202, supporting the bottom of the filter screen 202 and assisting the filter screen 202 in rotating.

[0044] like Figures 1 to 8 As shown, the transmission assembly includes: a drive motor 216, a pair of second transmission gears 213, a transmission belt 214, and a pair of spur gears 212. The drive motor 216 is fixed to one end of the transmission shaft 203 located outside the control cabinet 1, and is also fixed to the outer wall of the mounting frame 201. The pair of second transmission gears 213 are respectively fixed to one end of the transmission shaft 203 and the cleaning roller 208 located outside the mounting frame 201. The transmission belt 214 is mounted on the pair of second transmission gears 213. The pair of spur gears 212 are respectively fixed to one end of the cleaning roller 208 and the threaded brush roller 209 extending outside the transmission belt 214, and the pair of spur gears 212 mesh with each other.

[0045] When the drive motor 216 drives the transmission shaft 203 clockwise, the transmission shaft 203 drives the cleaning roller 208 to rotate clockwise via a pair of second transmission gears 213 and a transmission belt 214. The transmission shaft 203 also drives the filter screen 202 to rotate clockwise via a pair of first transmission gears 204. When the cleaning roller 208 rotates, it drives the threaded brush roller 209 to rotate counterclockwise via a pair of spur gears 212. Since the cleaning roller 208 is attached to the outer wall of the bottom end of the filter screen 202, and the threaded brush roller 209 is attached to the inner wall of the bottom end of the filter screen 202, both the cleaning roller 208 and the threaded brush roller 209 rotate in opposite directions towards the inner and outer walls of the filter screen 202. Therefore, the cleaning roller 208 and the threaded brush roller 209 can more effectively clean the dust from the inner and outer walls of the filter screen 202.

[0046] like Figures 1 to 8As shown, the filter fixing mechanism 3 includes: a pair of clamping frames 301, a pair of fixing frames 311, a spreading assembly, and a pair of tension springs 310. One end of each pair of clamping frames 301 is rotatably mounted on the side wall of the inner frame 217. The pair of fixing frames 311 are respectively fixed to the air inlet 103 and the mounting frame 201. The spreading assembly is installed at the end of the inner frame 217 away from the rotatable connection between the pair of clamping frames 301 and the inner frame 217, and is used to spread the pair of clamping frames 301 to both sides. The pair of tension springs 310 are both installed between the pair of clamping frames 301, and are located at the end of the clamping frames 301 near the spreading assembly.

[0047] When the filter screen 202 is not cleaned, the spreading assembly opens one side of the pair of clamping frames 301 to both sides, thereby clamping the two sides of the filter screen 202 together with the pair of fixing frames 311. When the filter screen 202 needs to be cleaned, the spreading assembly loosens one end of the pair of clamping frames 301, and then the tension of the pair of tension springs 310 pulls the pair of clamping frames 301 inward to rotate, thereby loosening the two sides of the filter screen 202, and then the filter screen 202 can be rotated for cleaning.

[0048] like Figures 1 to 8 As shown, one end of each pair of clamping frames 301 is fixed with a rotating shaft 302, and the pair of rotating shafts 302 rotate on the inner side wall of the inner frame 217. The pair of clamping frames 301 rotate on the inner side wall of the inner frame 217 respectively through the pair of rotating shafts 302.

[0049] like Figures 1 to 8 As shown, the expansion assembly includes: two pairs of fixed rods 303, a control plate 305, a pair of conical pushers 308, and a telescopic cylinder 307. The two pairs of fixed rods 303 are respectively fixed to the ends of a pair of clamping frames 301 away from the rotating shaft 302, and each pair of fixed rods 303 is rotatably equipped with a pulley 304. The control plate 305 slides on the side wall of the inner frame 217, and a fixed head 306 is fixed to the end of the inner frame 217 located outside the inner frame 217. The pair of conical pushers 308 are each fixed to the end of the control plate 305 located inside the inner frame 217, and the pair of conical pushers 308 are respectively located between the two pairs of pulleys 304. The telescopic cylinder 307 is fixed to the outer wall of the mounting frame 201, and the top end of the telescopic rod of the telescopic cylinder 307 is fixed to the fixed head 306.

[0050] When it is necessary to clamp both sides of the filter screen 202, the telescopic cylinder 307 drives the control plate 305 to move in the direction of the telescopic cylinder 307 through the fixed head 306. The control plate 305 drives a pair of conical pushers 308 to move in the direction of the telescopic cylinder 307. When the pair of control plates 305 move, they slide on the outer side wall of the pair of control plates 305 through two pairs of pulleys 304, thereby rotating the pair of clamping frames 301 outward, so that the pair of clamping frames 301 clamp both sides of the filter screen 202 with the pair of fixed frames 311 respectively.

[0051] like Figures 1 to 8 As shown, a pair of hook plates 309 are fixed on both sides of the end of the pair of conical pushers 308 away from the control plate 305. The hook plates 309 are used to hook the pair of pulleys 304 after the conical pushers 308 push the pair of pulleys 304 to both sides, so as to prevent the pulleys 304 from slipping off from both ends of the conical pushers 308.

[0052] Working principle: First, the telescopic cylinder 307 drives the fixed head 306 to move towards the rotating shaft 302. The fixed head 306 drives the control plate 305 to move towards the rotating shaft 302. The control plate 305 drives a pair of conical pushers 308 to move towards the rotating shaft 302. During the movement of the pair of control plates 305, the tension of a pair of tension springs 310 pulls a pair of clamping frames 301 to rotate inward, thereby causing the pair of clamping frames 301 to loosen the two sides of the filter screen 202.

[0053] Then, the drive motor 216 drives the transmission shaft 203 to perform the following... Figure 5 As shown, the drive shaft 203 drives the cleaning roller 208 to rotate clockwise via a pair of second drive gears 213 and a drive belt 214, and the drive shaft 203 drives the filter screen 202 to rotate clockwise via a pair of first drive gears 204. When the cleaning roller 208 rotates, it drives the threaded brush roller 209 to rotate counterclockwise via a pair of spur gears 212. Since the cleaning roller 208 is attached to the outer wall of the bottom end of the filter screen 202, and the threaded brush roller 209 is attached to the inner wall of the bottom end of the filter screen 202, both the cleaning roller 208 and the threaded brush roller 209 rotate in opposite directions towards the inner and outer walls of the filter screen 202. Therefore, the cleaning roller 208 and the threaded brush roller 209 can more effectively clean the dust from the inner and outer walls of the filter screen 202.

[0054] When the cleaning roller 208 and the threaded brush roller 209 clean the filter screen 202, the cleaning roller 208 removes the dust from the outer wall of the filter screen 202 and it falls directly into the dust collection basket 211. After the threaded brush roller 209 removes the dust from the inner wall of the filter screen 202, smaller dust particles pass through the holes of the filter screen 202 and fall downwards into the dust collection basket 211. Larger dust particles are conveyed by the spiral conveyor of the threaded brush roller 209 to one end of the filter screen 202, and finally fall downwards from the drain trough 210 on the rotating part 206 and into the dust collection basket 211 at the bottom.

[0055] After cleaning, the fixed head 306 is moved by the telescopic cylinder 307. The fixed head 306 moves the control plate 305 towards the telescopic cylinder 307. The control plate 305 moves a pair of conical pushers 308 towards the telescopic cylinder 307. When the pair of control plates 305 move, they slide on the outer walls of the pair of control plates 305 through two pairs of pulleys 304, thereby rotating a pair of clamping frames 301 outward, so that the pair of clamping frames 301 clamp the two sides of the filter screen 202 with the pair of fixed frames 311 respectively.

[0056] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0057] 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 PLC control device with self-processing function, characterized in that, include: A control cabinet, wherein side panels are provided on both sides of the control cabinet; The air inlet is cut into the side panel; A filtration mechanism, mounted on a side plate, includes: a mounting frame, a filter screen, a cleaning roller, a threaded brush roller, an inner frame, and a transmission assembly. The mounting frame is fixed to the side plate and located at the air inlet. A transmission shaft is rotatably mounted on the top of the mounting frame. A first auxiliary gear and a rotating component are rotatably mounted on the two inner side walls at the bottom of the mounting frame, respectively. A second auxiliary gear is fixed on the rotating component. The filter screen rotates on the transmission shaft, the first auxiliary gear, and the second auxiliary gear. The cleaning roller rotates on the mounting frame and is attached to the outer side wall at the bottom of the filter screen. The threaded brush roller rotates on the mounting frame and is attached to the inner side wall at the bottom of the filter screen. A dust collection basket is provided at the bottom of the cleaning roller. The inner frame is fixed inside the mounting frame and located inside the filter screen. The inner frame corresponds to the air inlet. The transmission assembly is mounted on the mounting frame and is used to drive the transmission shaft, the cleaning roller, and the threaded brush roller to rotate. The filter screen fixing mechanism is installed inside the inner frame and is used to clamp the filter screen.

2. The PLC control device with self-processing function according to claim 1, characterized in that, The control cabinet has a door on the front side, and a control panel and a display panel are installed on the door.

3. The PLC control device with self-processing function according to claim 1, characterized in that, The second bearing and the first bearing are fixed on the two inner side walls at the bottom of the mounting frame, respectively. The first auxiliary gear and the rotating component rotate outside the second bearing and the first bearing, respectively. The two ends of the threaded brush roller rotate inside the second bearing and the first bearing, respectively.

4. A PLC control device with self-processing function according to claim 3, characterized in that, The rotating component has multiple drainage grooves cut into it.

5. A PLC control device with self-processing function according to claim 4, characterized in that, A pair of first transmission gears are fixed on the transmission shaft, and teeth are fixed on the inner walls of both ends of the filter screen. The pair of teeth mesh with the pair of first transmission gears, the first auxiliary gear, and the second auxiliary gear.

6. A PLC control device with self-processing function according to claim 5, characterized in that, The transmission assembly includes: A drive motor is fixed to one end of the transmission shaft located outside the control cabinet, and the drive motor is fixed to the outer wall of the mounting frame; A pair of second transmission gears are respectively fixed to the transmission shaft and the cleaning roller located outside the mounting frame; A drive belt, mounted on a pair of second drive gears; and A pair of spur gears are fixed to the ends of the cleaning roller and the threaded brush roller that extend beyond the drive belt, and the pair of spur gears mesh with each other.

7. A PLC control device with self-processing function according to claim 1, characterized in that, The filter screen fixing mechanism includes: A pair of clamping frames, one end of which rotates on the inner frame sidewall; A pair of fixing frames, one fixed to the air inlet and the other to the mounting frame; The spreading assembly, installed at the end of the inner frame away from the rotatable connection between the pair of clamping frames and the inner frame, is used to spread the pair of clamping frames to both sides; and A pair of tension springs are installed between a pair of clamping frames and are located at the end of the clamping frames near the spreading assembly.

8. A PLC control device with self-processing function according to claim 7, characterized in that, One end of each pair of clamping frames is fixed with a pivot, and each pair of pivots rotates on the inner sidewall of the inner frame.

9. A PLC control device with self-processing function according to claim 8, characterized in that, The expanding component includes: Two pairs of fixing rods are respectively fixed to the ends of a pair of clamping frames away from the rotating shaft, and pulleys are rotatably provided on both pairs of fixing rods; The control panel slides on the inner frame side wall, and a fixing head is fixed at one end outside the inner frame; A pair of conical pushers are fixed to one end of the control plate located within the inner frame; the pair of conical pushers are respectively positioned between two pairs of pulleys; and A telescopic cylinder is fixed to the outer wall of the mounting frame, and the top end of the telescopic cylinder's telescopic rod is fixed to the fixed head.

10. A PLC control device with self-processing function according to claim 9, characterized in that, A pair of hook plates are fixed on both sides of the end of the pair of conical pushers away from the control plate.

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