Non-edible plant oil pressing device with oil residue separation structure

Abstract

The application relates to the technical field of non-edible vegetable oil pressing, and discloses a non-edible vegetable oil pressing device with an oil residue separation structure, which comprises a bottom plate, a separation mechanism arranged above the bottom plate and a cleaning mechanism arranged above the bottom plate; the separation mechanism comprises two supporting plates, the bottom surface of each supporting plate is fixedly connected with the upper surface of the bottom plate, the outer surfaces of the two supporting plates are fixedly connected with a cage body, and two supporting rods are fixedly installed on the side surface of each supporting plate which is close to the other supporting plate. The non-edible vegetable oil pressing device with the oil residue separation structure is provided with the separation mechanism, the mixed non-edible vegetable oil pressed out of the cage body can be collected by the flow guide collecting frame, the non-edible vegetable oil is guided into the separation cover, the first servo motor drives the rotating shaft and the separation cover to rotate, the plant oil of the mixed oil residue moves around the separation cover under the action of centrifugal force, and the plant oil passes through the separation cover and enters the separation frame.

Description

Technical Field

[0001] This invention relates to the field of non-edible vegetable oil pressing technology, specifically to a non-edible vegetable oil pressing device with an oil residue separation structure. Background Technology

[0002] Non-edible vegetable oil pressing refers to the process of extracting oil from non-edible plant raw materials such as seeds, pulp, or germ of oil crops using mechanical physical extrusion methods. Since the extracted oil does not enter the human food chain but is used in industries such as industry, energy, medicine, or animal feed, it differs significantly from edible vegetable oil pressing in terms of raw material selection, processing technology, and quality control.

[0003] Currently, in the operation of existing non-edible vegetable oil pressing equipment, the pressed vegetable oil contains a certain amount of oil residue. When this residue is directly mixed into the oil storage structure, it requires additional filtration and separation. This not only increases the processing steps and costs, but also easily leads to blockage of the oil outlet channel due to the accumulation of oil residue, affecting the continuous and stable operation of the pressing process. Summary of the Invention

[0004] The purpose of this invention is to provide a non-edible vegetable oil pressing device with an oil residue separation structure to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a non-edible vegetable oil pressing device with an oil residue separation structure, comprising a bottom plate, a separation mechanism disposed above the bottom plate, and a cleaning mechanism disposed above the bottom plate; The separation mechanism includes two support plates, the bottom surface of each support plate being fixedly connected to the upper surface of a base plate. A pressing cage body is fixedly connected to the outer surfaces of both support plates. Two support rods are fixedly installed on the sides of the two support plates that are close to each other. A flow guide and collection frame is fixedly connected to the sides of the two sets of support rods that are close to each other. A separation frame is fixedly connected to the bottom surface of the flow guide and collection frame. An oil outlet groove is formed on the outer surface of the separation frame. A flow guide plate is fixedly connected to the outer surface of the separation frame. A first servo motor is fixedly connected to the upper surface of the base plate. A rotating shaft is fixedly connected to the output end of the first servo motor. The outer surface of the rotating shaft is rotatably connected to the inner wall of the separation frame. A sealed bearing is fixedly connected to the outer surface of the rotating shaft. The outer ring of the sealed bearing is fixedly connected to the inner wall of the separation frame. A separation cover is fixedly connected to the top of the rotating shaft. Two fixed plates are fixedly connected to the inner wall of the separation frame. A disturbance plate is fixedly connected to the bottom surface of each fixed plate.

[0006] Preferably, the cleaning mechanism includes a water storage tank, the bottom surface of which is fixedly connected to the upper surface of the base plate. A baffle is snapped into the inside of the separation frame, and a fixing frame is fixedly connected to the outer surface of the separation frame. Two small electric push rods are fixedly connected to the outer surface of the fixing frame. The telescopic ends of the two small electric push rods are fixedly connected to a brush plate. A multi-port pipe is fixedly connected to the inner wall of the brush plate. A flexible hose is fixedly connected to the end of the multi-port pipe away from the brush plate. A small water pump is fixedly connected to the end of the flexible hose away from the multi-port pipe. The bottom surface of the small water pump is fixedly connected to the upper surface of the water storage tank. The power input end of the small water pump passes through the water storage tank and extends into the interior of the water storage tank.

[0007] Preferably, the bottom surface of the base plate is fixedly connected to a support leg, the outer surface of the support leg is fixedly connected to four mounting blocks, and the inner wall of the pressing cage body is fixedly connected to a feed hopper.

[0008] Preferably, a pressing shaft is rotatably connected to the inner wall of the pressing cage body, and a second servo motor is provided above the bottom plate.

[0009] Preferably, the left end of the press shaft and the output end of the second servo motor are both fixedly connected to pulleys, and the outer surfaces of the two pulleys are connected to a synchronous belt for rotation.

[0010] Preferably, the right end of the press shaft is rotatably connected to a support frame, and the left side of the support frame is fixedly connected to the right side of one of the support plates.

[0011] Preferably, the bottom surfaces of the separation frame and the diversion plate are jointly fixedly connected to two stabilizing plates, and the bottom surface of each stabilizing plate is fixedly connected to the upper surface of the base plate.

[0012] Preferably, the bottom surface of the second servo motor is fixedly connected to a base, and the bottom surface of the base is fixedly connected to the upper surface of the base plate.

[0013] Preferably, the inner wall of the water storage tank is threaded with a sealing cover, and the outer surface of the sealing cover is provided with several anti-slip grooves.

[0014] Preferably, four guide posts are fixedly connected to the outer surface of the brush plate, and the outer surface of each guide post is slidably connected to the inner wall of the fixing frame.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: First, this invention, by incorporating a separation mechanism, utilizes a flow-guiding collection frame to collect the non-edible vegetable oil from the mixed oil residue pressed by the pressing cage body, guiding it into a separation hood. A first servo motor then drives the rotating shaft and separation hood to rotate, causing the vegetable oil in the mixed oil residue to move towards the periphery of the separation hood under centrifugal force, passing through the hood and entering the separation frame. The oil residue is trapped inside the separation hood. The separated vegetable oil is then guided and collected through an oil outlet trough and a flow guide plate. A disturbance plate scrapes and agitates the vegetable oil adhering to the inner wall of the separation frame during the rotation of the separation hood, preventing vegetable oil from clinging to the wall and oil residue from adhering to the inner wall. This achieves immediate separation of oil and residue after pressing, eliminating the need for subsequent additional filtration, reducing processing steps and costs. Simultaneously, it prevents oil residue from entering the oil outlet channel and causing blockages, ensuring continuous and stable pressing operations.

[0016] Secondly, this invention, by incorporating a cleaning mechanism, can use baffles to block and obstruct the separation frame. After separation, the baffles can be removed, and simultaneously, a small water pump draws clean water from the water storage tank, which is then transported to the brush plate via hoses and multi-port pipes. Water is sprayed onto the surface of the separation cover, and a small electric push rod moves the brush plate to clean the oil residue adhering to the mesh of the separation cover, preventing the oil residue from clogging the mesh and ensuring the continuous operation of the separation. This eliminates the need for manual cleaning and reduces the labor intensity of manual cleaning. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a perspective view of the support plate of the present invention; Figure 3 This is a perspective view of the separation frame of the present invention; Figure 4 This is a perspective view of the separation frame of the present invention in cross-section; Figure 5 This is a perspective view of the separation cover of the present invention from a bottom angle; Figure 6 This is a perspective view of the fixing frame of the present invention; Figure 7 This is a perspective view of the water storage tank of the present invention.

[0018] The components include: 1. Base plate; 2. Separation mechanism; 201. Support plate; 202. Support rod; 203. Flow guide and collection frame; 204. Press cage body; 205. Separation frame; 206. Flow guide plate; 207. Separation cover; 208. Fixing plate; 209. Disturbance plate; 210. Oil outlet groove; 211. Rotating shaft; 212. Sealed bearing; 213. First servo motor; 3. Cleaning mechanism; 301. Water storage tank; 30 2. Baffle; 303. Fixing frame; 304. Small electric push rod; 305. Brush plate; 306. Multi-port pipe; 307. Hose; 308. Small water pump; 4. Second servo motor; 5. Base; 6. Support leg; 7. Mounting block; 8. Press shaft; 9. Feed hopper; 10. Support frame; 11. Pulley; 12. Synchronous belt; 13. Stabilizing plate; 14. Guide column; 15. Sealing cover; 16. Anti-slip groove. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0020] Example 1 Please see Figure 1-7 It includes a base plate 1, a separation mechanism 2 is provided above the base plate 1, and a cleaning mechanism 3 is provided above the base plate 1; The separation mechanism 2 includes two support plates 201, the bottom surface of each support plate 201 being fixedly connected to the upper surface of the base plate 1. The outer surfaces of the two support plates 201 are jointly fixedly connected to the pressing cage body 204. Two support rods 202 are fixedly installed on the side of each support plate 201 that is close to each other. A guide collection frame 203 is fixedly connected to the side of the two sets of support rods 202 that is close to each other. A separation frame 205 is fixedly connected to the bottom surface of the guide collection frame 203. An oil outlet groove 210 is formed on the outer surface of the separation frame 205, and a diverting plate 2 is fixedly connected to the outer surface of the separation frame 205. 06. A first servo motor 213 is fixedly connected to the upper surface of the base plate 1. A rotating shaft 211 is fixedly connected to the output end of the first servo motor 213. The outer surface of the rotating shaft 211 is rotatably connected to the inner wall of the separation frame 205. A sealed bearing 212 is fixedly connected to the outer surface of the rotating shaft 211. The outer ring of the sealed bearing 212 is fixedly connected to the inner wall of the separation frame 205. A separation cover 207 is fixedly connected to the top of the rotating shaft 211. Two fixed plates 208 are fixedly connected to the inner wall of the separation frame 205. A disturbance plate 209 is fixedly connected to the bottom surface of each fixed plate 208.

[0021] The bottom surface of the base plate 1 is fixedly connected to the support leg 6, and the outer surface of the support leg 6 is fixedly connected to four mounting blocks 7. The inner wall of the pressing cage body 204 is fixedly connected to the feed hopper 9. Through the support leg 6, the mounting blocks 7 and the feed hopper 9, the pressing device can be easily fixedly installed on the work site. At the same time, it is convenient to add oil raw materials from the feed hopper 9 into the pressing cage body 204, ensuring the convenience of adding raw materials.

[0022] The inner wall of the press cage body 204 is rotatably connected to the press shaft 8, and a second servo motor 4 is set above the bottom plate 1. The second servo motor 4 can provide power for the pressing operation, so as to drive the press shaft 8 to rotate and press the oil.

[0023] The left end of the press shaft 8 and the output end of the second servo motor 4 are both fixedly connected to pulleys 11. The outer surfaces of the two pulleys 11 are connected to a synchronous belt 12 for rotation. Through the pulleys 11 and the synchronous belt 12, the second servo motor 4 can stably drive the press shaft 8 to rotate, ensuring the stability of power transmission and making the pressing of the press shaft 8 more stable.

[0024] The right end of the press shaft 8 is rotatably connected to a support frame 10. The left side of the support frame 10 is fixedly connected to the right side of one of the support plates 201. The support frame 10 can provide stable support for the right end of the press shaft 8, ensuring the stability of the press shaft 8 during rotation and pressing, and preventing the right end of the press shaft 8 from shaking.

[0025] The bottom surfaces of the separation frame 205 and the diversion plate 206 are jointly fixedly connected to two stabilizing plates 13. The bottom surface of each stabilizing plate 13 is fixedly connected to the upper surface of the base plate 1. The stabilizing plates 13 can reinforce and support the separation frame 205 and the diversion plate 206, improve the stability of the installation and fixation of the separation frame 205 and the diversion plate 206, and prevent the separation frame 205 from loosening and shaking during the separation operation.

[0026] The bottom surface of the second servo motor 4 is fixedly connected to a base 5. The bottom surface of the base 5 is fixedly connected to the upper surface of the base plate 1. The base 5 can provide stable support for the second servo motor 4, making the second servo motor 4 run more stably and reducing the vibration generated during the operation of the second servo motor 4.

[0027] The specific implementation of this embodiment is as follows: In use, the device is first fixedly installed at the work site using the support leg 6 and the mounting block 7. The external oil storage container is placed below the diversion plate 206. Non-edible vegetable oil raw materials are added into the press cage body 204 through the feed hopper 9. The second servo motor 4 is started. The second servo motor 4 drives the press shaft 8 to rotate through the pulley 11 and the synchronous belt 12. The rotating press shaft 8 presses the oil raw materials inside the press cage body 204. The non-edible vegetable oil of the pressed mixed oil residue falls downward into the guide collection frame 203 and flows downward into the separation hood 207. At this time, the first servo motor 213 is started. The first servo motor 213 drives the rotating shaft 211 and the separation hood 207. As the separator 207 rotates, the vegetable oil mixed with the oil residue inside is subjected to centrifugal force and moves to the sides of the separator 207. The vegetable oil is thrown out through the mesh of the separator 207 and enters the separator frame 205, while the oil residue is blocked inside the separator 207, completing the immediate separation of oil residue. The vegetable oil that enters the separator frame 205 flows down the inner wall of the separator frame 205 and flows out through the oil outlet 210, and flows into the external oil storage container along the guide plate 206. During the rotation of the separator 207, the disturbance plate 209 fixed on the inner wall of the separator frame 205 can scrape and disturb the vegetable oil attached to the inner wall of the separator frame 205, avoiding vegetable oil residue from sticking to the wall and preventing oil residue from adsorbing and accumulating on the inner wall of the separator frame 205.

[0028] Example 2 Please see Figure 1-7 The cleaning mechanism 3 includes a water storage tank 301. The bottom surface of the water storage tank 301 is fixedly connected to the upper surface of the base plate 1. A baffle 302 is snapped into the inside of the separation frame 205. A fixing frame 303 is fixedly connected to the outer surface of the separation frame 205. Two small electric push rods 304 are fixedly connected to the outer surface of the fixing frame 303. The telescopic ends of the two small electric push rods 304 are fixedly connected to a brush plate 305. A multi-port pipe 306 is fixedly connected to the inner wall of the brush plate 305. A hose 307 is fixedly connected to the end of the multi-port pipe 306 away from the brush plate 305. A small water pump 308 is fixedly connected to the end of the hose 307 away from the multi-port pipe 306. The bottom surface of the small water pump 308 is fixedly connected to the upper surface of the water storage tank 301. The power input end of the small water pump 308 passes through the water storage tank 301 and extends into the interior of the water storage tank 301.

[0029] The inner wall of the water storage tank 301 is threaded with a sealing cover 15. The outer surface of the sealing cover 15 is provided with several anti-slip grooves 16. Through the sealing cover 15 and the anti-slip grooves 16, it is easy to open the sealing cover 15 to add clean water into the water storage tank 301, while increasing the friction when twisting the sealing cover 15.

[0030] Four guide posts 14 are fixedly connected to the outer surface of the brush plate 305. The outer surface of each guide post 14 is slidably connected to the inner wall of the fixing frame 303. The guide posts 14 can guide the movement of the brush plate 305, making the brush plate 305 move more smoothly when brushing, avoiding the brush plate 305 from tilting or getting stuck, and ensuring the smoothness of brushing and cleaning.

[0031] The specific implementation method of this embodiment is as follows: During use, after the separation work is completed, the support rod 202 and the guide collection frame 203 are disassembled. Then, large impurities in the separation cover 207 are removed. When oil residue clogs the holes in the separation cover 207, the baffle 302 is pulled outward to open the separation frame 205. Then, a small water pump 308 is started to draw clean water from the water storage tank 301. The clean water is sequentially transported to the brush plate 305 through the hose 307 and the multi-port pipe 306, and sprayed from the spray holes of the brush plate 305 onto the surface of the separation cover 207. Simultaneously, two small electric... The push rod 304 pushes the brush plate 305 to move towards the separation cover 207, so that the brush of the brush plate 305 is in contact with the surface of the separation cover 207. The brush plate 305 moves smoothly along the guide column 14 and drives the separation cover 207 to rotate through the first servo motor 213, which brushes the oil residue attached to the mesh of the separation cover 207, brushes away the blocked oil residue from the separation cover 207, and drops it into the separation frame 205 and is discharged with the cleaning water. This completes the automatic cleaning of the separation cover 207 without the need for manual cleaning of the mesh. After cleaning, the baffle 302 can be reset to continue the separation operation.

[0032] The working principle of this invention is as follows: In use, the device is first fixedly installed at the work site using support legs 6 and mounting blocks 7. An external oil storage container is placed below the diversion plate 206. Non-edible vegetable oil raw materials are added into the press cage body 204 through the feed hopper 9. The second servo motor 4 is started. The second servo motor 4 drives the press shaft 8 to rotate via the pulley 11 and synchronous belt 12. The rotating press shaft 8 presses the oilseed raw materials inside the press cage body 204. The non-edible vegetable oil from the pressed mixed oil residue falls downwards into the guide collection frame 203 and flows downwards into the separation hood 207. At this time, the first servo motor is started. Motor 213, the first servo motor 213 drives the rotating shaft 211 and the separation cover 207 to rotate. The rotation of the separation cover 207 causes the vegetable oil mixed with the oil residue inside to be subjected to centrifugal force and move to the periphery of the separation cover 207. The vegetable oil is thrown out through the mesh of the separation cover 207 and enters the separation frame 205, while the oil residue is blocked inside the separation cover 207, completing the immediate separation of oil residue. The vegetable oil that enters the separation frame 205 flows down the inner wall of the separation frame 205 and flows out through the oil outlet 210, and flows into the external oil storage container along the guide plate 206. During the rotation of the separation cover 207, the disturbance plate 2 fixed on the inner wall of the separation frame 205... 09. This mechanism scrapes and agitates the vegetable oil adhering to the inner wall of the separation frame 205, preventing oil residue from adhering to the wall and causing blockage. After the separation is completed, the support rod 202 and the guide collection frame 203 are disassembled, and large impurities in the separation cover 207 are removed. When oil residue blocks the holes in the separation cover 207, the baffle 302 is pulled outward to open the separation frame 205. Then, the small water pump 308 is started to draw clean water from the water storage tank 301. The clean water is then transported to the brush plate 305 through the hose 307 and the multi-port pipe 306, and sprayed from the spray holes of the brush plate 305. When the oil residue is discharged from the surface of the separation cover 207, two small electric push rods 304 are activated to push the brush plate 305 towards the separation cover 207, so that the brush of the brush plate 305 is in contact with the surface of the separation cover 207. The brush plate 305 moves smoothly along the guide column 14 and drives the separation cover 207 to rotate through the first servo motor 213, which brushes the oil residue attached to the mesh of the separation cover 207, brushes the blocked oil residue away from the separation cover 207, and drops it into the separation frame 205 and is discharged with the cleaning water. The automatic cleaning of the separation cover 207 is completed without the need for the staff to manually clean the mesh. After the cleaning is completed, the baffle 302 is reset and the separation operation can continue.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-edible vegetable oil pressing device with an oil residue separation structure, comprising a bottom plate (1), characterized in that: A separation mechanism (2) is provided above the base plate (1), and a cleaning mechanism (3) is provided above the base plate (1). The separation mechanism (2) includes two support plates (201). The bottom surface of each support plate (201) is fixedly connected to the upper surface of the bottom plate (1). The outer surfaces of the two support plates (201) are fixedly connected to the pressing cage body (204). Two support rods (202) are fixedly installed on the side of the two support plates (201) that are close to each other. The side of the two sets of support rods (202) that are close to each other are fixedly connected to the flow guide collection frame (203). The bottom surface of the flow guide collection frame (203) is fixedly connected to the separation frame (205). The outer surface of the separation frame (205) is provided with an oil outlet groove (210). The outer surface of the separation frame (205) is fixedly connected to a diverter plate (205). 6) A first servo motor (213) is fixedly connected to the upper surface of the base plate (1). A rotating shaft (211) is fixedly connected to the output end of the first servo motor (213). The outer surface of the rotating shaft (211) is rotatably connected to the inner wall of the separation frame (205). A sealed bearing (212) is fixedly connected to the outer surface of the rotating shaft (211). The outer ring of the sealed bearing (212) is fixedly connected to the inner wall of the separation frame (205). A separation cover (207) is fixedly connected to the top of the rotating shaft (211). Two fixed plates (208) are fixedly connected to the inner wall of the separation frame (205). A disturbance plate (209) is fixedly connected to the bottom surface of each fixed plate (208).

2. The non-edible vegetable oil pressing device with an oil residue separation structure according to claim 1, characterized in that: The cleaning mechanism (3) includes a water tank (301), the bottom surface of which is fixedly connected to the upper surface of the base plate (1). A baffle (302) is snapped into the inside of the separation frame (205). A fixing frame (303) is fixedly connected to the outer surface of the separation frame (205). Two small electric push rods (304) are fixedly connected to the outer surface of the fixing frame (303). The telescopic ends of the two small electric push rods (304) are fixedly connected to a brush plate (305). A multi-port pipe (306) is fixedly connected to the inner wall of (305). A flexible hose (307) is fixedly connected to one end of the multi-port pipe (306) away from the brush plate (305). A small water pump (308) is fixedly connected to one end of the flexible hose (307) away from the multi-port pipe (306). The bottom surface of the small water pump (308) is fixedly connected to the upper surface of the water storage tank (301). The power input end of the small water pump (308) passes through the water storage tank (301) and extends into the interior of the water storage tank (301).

3. A non-edible vegetable oil pressing device with an oil residue separation structure according to claim 1, characterized in that: The bottom surface of the base plate (1) is fixedly connected to a support leg (6), and the outer surface of the support leg (6) is fixedly connected to four mounting blocks (7). The inner wall of the press cage body (204) is fixedly connected to a feed hopper (9).

4. A non-edible vegetable oil pressing device with an oil residue separation structure according to claim 1, characterized in that: The inner wall of the press cage body (204) is rotatably connected to the press shaft (8), and a second servo motor (4) is provided above the bottom plate (1).

5. A non-edible vegetable oil pressing device with an oil residue separation structure according to claim 4, characterized in that: The left end of the press shaft (8) and the output end of the second servo motor (4) are both fixedly connected to pulleys (11), and the outer surfaces of the two pulleys (11) are connected to a synchronous belt (12) for rotation.

6. A non-edible vegetable oil pressing device with an oil residue separation structure according to claim 4, characterized in that: The right end of the press shaft (8) is rotatably connected to a support frame (10), and the left side of the support frame (10) is fixedly connected to the right side of one of the support plates (201).

7. A non-edible vegetable oil pressing device with an oil residue separation structure according to claim 1, characterized in that: The bottom surfaces of the separation frame (205) and the diversion plate (206) are jointly fixedly connected to two stabilizing plates (13), and the bottom surface of each stabilizing plate (13) is fixedly connected to the upper surface of the base plate (1).

8. A non-edible vegetable oil pressing device with an oil residue separation structure according to claim 4, characterized in that: The bottom surface of the second servo motor (4) is fixedly connected to a base (5), and the bottom surface of the base (5) is fixedly connected to the upper surface of the base plate (1).

9. A non-edible vegetable oil pressing device with an oil residue separation structure according to claim 2, characterized in that: The inner wall of the water storage tank (301) is threaded with a sealing cover (15), and the outer surface of the sealing cover (15) is provided with several anti-slip grooves (16).

10. A non-edible vegetable oil pressing device with an oil residue separation structure according to claim 2, characterized in that: Four guide posts (14) are fixedly connected to the outer surface of the brush plate (305), and the outer surface of each guide post (14) is slidably connected to the inner wall of the fixing frame (303).

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