Stone sculpture polishing auxiliary device

Abstract

The application relates to the technical field of stone polishing, and discloses a stone sculpture polishing auxiliary device, which comprises a polishing gun, a protective cover, a sealing assembly and an inflation assembly. The protective cover comprises a fixed cover and a movable cover, the movable cover is slidably arranged in the fixed cover, the bottom of the movable cover is provided with a sealing lip, the sealing assembly is used for increasing the sealing property between the fixed cover and the movable cover, and the inflation assembly is used for inflating the inside of the sealing assembly. In the application, the dust generated during polishing is blocked by the movable cover and the fixed cover, dust is prevented from overflowing, and in the process of moving the movable cover upwards, the connecting plate is moved upwards by the movable cover, the piston rod and the piston disc are matched, the air pressure in the piston pipe is extruded into the inside of the sealing air bag through the inflation pipe, the sealing property of the movable cover is increased by the sealing air bag, and the possibility of dust accumulation in the gap between the movable cover and the fixed cover during polishing is reduced.

Description

Technical Field

[0001] This invention relates to the field of stone polishing technology, specifically to an auxiliary device for polishing stone sculptures. Background Technology

[0002] Stone sculptures, as a product of the combination of traditional art and modern craftsmanship, are widely used in garden landscapes, architectural decoration, and cultural memorials. The polishing process is one of the core steps in stone sculpture processing. Its purpose is to eliminate processing marks on the stone surface, improve surface smoothness, and make the sculpture's details clearer and its texture more delicate.

[0003] In existing technology, to prevent dust from escaping during polishing, a dust cover is usually added to the polishing head of the polishing gun to assist in the polishing process and prevent dust from overflowing. To avoid affecting the polishing operation, the dust cover is typically divided into two parts: a fixed cover and a movable cover. The fixed cover is fixedly connected to the polishing gun body, while the movable cover is slidably fitted into the inner cavity of the fixed cover. It can extend and retract along the axial direction of the fixed cover as the polishing head moves, allowing the polishing head to fit snugly against the stone surface. However, in actual use, due to… Due to poor sealing, gaps exist between the movable cover and the fixed cover. During the reciprocating sliding of the movable cover, the accumulated dust particles act as abrasives, exacerbating the frictional wear between the mating surfaces of the movable and fixed covers. This not only increases the sliding resistance and reduces the flexibility of the movable cover, affecting the smoothness of the grinding operation, but also causes wear and deformation of the mating surfaces, further widening the gap size. This creates a vicious cycle of dust accumulation, increased wear, and seal failure, ultimately significantly reducing the service life of the dust cover. Therefore, an auxiliary device for grinding stone sculptures is proposed. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a stone sculpture polishing auxiliary device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a stone sculpture polishing auxiliary device, comprising: A grinding gun, wherein a grinding head is installed at the output end of the grinding gun; A protective cover is located outside the grinding head. The protective cover includes a fixed cover and a movable cover. The movable cover is slidably inserted inside the fixed cover, and the bottom of the movable cover is provided with a sealing lip. A sealing assembly is located between the fixed cover and the movable cover, which increases the sealing between the fixed cover and the movable cover; An inflation component is located inside the fixed cover. The inflation component inflates the interior of the sealing component to improve its sealing performance.

[0006] As a further explanation of the present invention, the fixed cover has a sliding groove inside, the movable cover is movably inserted into the sliding groove, and a connecting plate is fixedly connected to the top outer surface of the movable cover, the connecting plate being slidably connected to the inside of the sliding groove.

[0007] As a further explanation of the present invention, the sealing assembly includes two mounting slots, which are respectively formed on the inner walls of the fixed cover located on both sides of the movable cover. A sealing airbag is installed inside the mounting slot, and the sealing airbag is inflated by the inflation assembly.

[0008] As a further explanation of the present invention, the inflation assembly includes a plurality of piston tubes, which are circumferentially distributed inside the fixed cover and are interconnected with each other. A plurality of piston rods are fixedly connected to the top outer surface of the connecting plate, and a piston disc is fixedly connected to the top outer surface of the piston rod. The piston disc is slidably connected to the inside of the piston tube. An inflation tube is connected to the outer surface of the piston tube, and the other end of the inflation tube is connected to the inside of the sealed airbag.

[0009] As a further explanation of the present invention, a spring is fixedly connected between the piston disc and the connecting plate, and the spring is sleeved on the outer surface of the piston rod.

[0010] As a further explanation of the present invention, the front end of the grinding gun is provided with a dust suction component, which adsorbs the dust generated inside the dust cover during grinding.

[0011] As a further explanation of the present invention, the dust collection assembly includes a support plate, on the top outer surface of the support plate are mounted a miniature suction fan and a filter box, the suction end of the miniature suction fan is connected to the interior of the filter box, the other end of the filter box is connected to two suction pipes, both of which are connected to the interior of a fixed cover, a fixed plate is installed inside the filter box, a filter frame is installed on the outer surface of the fixed plate, and a filter screen is installed on the outer surface of the filter frame.

[0012] As a further explanation of the present invention, a cleaning component is provided on the outer surface of the filter screen, the cleaning component being used to clean the dust accumulated on the surface of the filter screen.

[0013] As a further explanation of the present invention, the cleaning assembly includes a cleaning shaft that rotatably passes through the outer surface of the filter frame. A fan wheel is installed at the end of the cleaning shaft facing the micro suction fan. A cleaning plate is fixedly sleeved on the outer surface of the cleaning shaft. A cleaning brush is installed on the outer surface of the cleaning plate. The cleaning brush is in contact with the surface of the filter screen away from the micro suction fan. A collection box is movably inserted inside the filter box, and the collection box is located below the filter screen.

[0014] As a further explanation of the present invention, a drive assembly is provided inside the filter box to provide driving force for the rotation of the cleaning shaft. The drive assembly includes a first gear sleeved on the surface of the cleaning shaft. An electric push rod is fixedly installed on the top inner wall of the filter box. An installation plate is installed on the output end of the electric push rod. A motor is installed on the bottom outer surface of the installation plate. A second gear is sleeved on the output end of the motor. The second gear is located above the first gear and is on the same vertical plane.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In the stone sculpture polishing auxiliary device provided by the present invention, the dust generated during polishing is blocked by the movable cover and the fixed cover to prevent dust from overflowing. In the process of the movable cover moving upward, the movable cover drives the connecting plate to move upward. In conjunction with the piston rod and piston disc, the air pressure inside the piston tube is squeezed into the interior of the sealing airbag through the inflation tube. The sealing airbag increases the sealing performance of the movable cover and reduces the possibility of dust accumulating in the gap between the movable cover and the fixed cover during polishing.

[0017] 2. In the stone sculpture polishing auxiliary device provided by the present invention, a micro suction fan is used to generate suction to adsorb dust inside the movable cover and the fixed cover through the dust suction pipe, and the dust is filtered through the filter screen. The wind force causes the impeller to rotate, thereby causing the cleaning shaft to drive the cleaning plate to clean the dust adhering to the filter screen, thus avoiding dust clogging the filter screen.

[0018] 3. In the stone sculpture polishing auxiliary device provided by the present invention, the second gear is moved by an electric push rod, so that the second gear is meshed with the first gear, and the second gear is driven to rotate by a motor, which in turn drives the first gear to rotate, thereby causing the cleaning shaft to rotate. Thus, the electric drive of the motor provides power for the rotation of the cleaning shaft, avoiding the situation where the suction of the micro suction fan is insufficient to make the impeller rotate and drive the cleaning shaft to rotate the roller. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention from a bottom view;

[0021] Figure 3 This is a partial frontal sectional view of the present invention;

[0022] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the filter box and related structures of the present invention;

[0024] Figure 6 This is a schematic diagram of the interior of the filter box and its related structures of the present invention;

[0025] Figure 7 This is a side sectional view of the filter box of the present invention;

[0026] Figure 8 For the present invention Figure 6 Enlarged structural diagram at point B;

[0027] Figure 9 For the present invention Figure 7 Enlarged structural diagram at point C.

[0028] In the diagram: 100, Grinding gun; 101, Grinding head; 200, Fixed cover; 201, Movable cover; 202, Sealing lip; 203, Slide groove; 204, Connecting plate; 300, Mounting groove; 301, Sealing airbag; 400, Piston tube; 401, Piston disc; 402, Piston rod; 403, Spring; 404, Inflation tube; 500, Miniature suction fan; 501, Filter box; 502, Suction tube; 503, Fixed plate; 504, Filter screen; 600, Cleaning shaft; 601, Impeller; 602, Cleaning plate; 603, Cleaning brush; 604, Collection box; 700, First gear; 701, Electric push rod; 702, Motor; 703, Second gear. Detailed Implementation

[0029] 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.

[0030] Example 1:

[0031] Please refer to the following: Figures 1-9This invention provides a technical solution: a stone sculpture polishing auxiliary device, including a polishing gun 100, a protective cover, a sealing component, and an inflation component. The output end of the polishing gun 100 is equipped with a polishing head 101. The protective cover is located outside the polishing head 101. The protective cover includes a fixed cover 200 and a movable cover 201. The movable cover 201 is slidably inserted inside the fixed cover 200. A sealing lip 202 is provided at the bottom of the movable cover 201. The sealing component is located between the fixed cover 200 and the movable cover 201, and the sealing component increases the sealing performance between the fixed cover 200 and the movable cover 201. The inflation component is located inside the fixed cover 200, and the inflation component inflates the inside of the sealing component to improve the sealing performance of the sealing component.

[0032] Among them, the sealing lip 202 is made of elastic polyurethane material. Elastic polyurethane material has excellent elastic deformation ability and wear resistance. It can generate adaptive deformation when it is applied to the sculpted surface with different curvatures, reducing the risk of dust leakage from the bonding gap.

[0033] In this embodiment, the fixed cover 200 has a sliding groove 203 inside, and the movable cover 201 is movably inserted into the sliding groove 203. A connecting plate 204 is fixedly connected to the top outer surface of the movable cover 201. The connecting plate 204 is slidably connected to the inside of the sliding groove 203. Specifically, the operator can push the movable cover 201 according to the depth of the grinding position, so that the movable cover 201 slides along the axial direction of the sliding groove 203. The sliding groove 203 provides precise guidance and positioning and movement space for the sliding of the movable cover 201.

[0034] In this embodiment, the sealing assembly includes two mounting grooves 300, which are respectively formed on the inner walls of the fixed cover 200 located on both sides of the movable cover 201. A sealing airbag 301 is installed inside the mounting groove 300. The sealing airbag 301 is inflated by the inflation assembly. Specifically, the two sealing airbags 301 are respectively attached to the outer walls of both sides of the movable cover 201. After inflation, they can fit tightly against the outer walls of the movable cover 201 to form a double sealing barrier, effectively preventing dust from entering the sliding fit gap and avoiding dust accumulation that could cause sliding jamming or sealing failure.

[0035] In this embodiment, the inflation assembly includes multiple piston tubes 400, which are circumferentially distributed inside the fixed cover 200 and interconnected. Multiple piston rods 402 are fixedly connected to the top outer surface of the connecting plate 204, and piston discs 401 are fixedly connected to the top outer surface of the piston rods 402. The piston discs 401 are slidably connected to the interior of the piston tubes 400. An inflation tube 404 connects to the outer surface of the piston tubes 400, and the other end of the inflation tube 404 is connected to the interior of the sealing airbag 301. A spring 403 is fixedly connected between the piston disc 401 and the connecting plate 204, and the spring 403 is sleeved on the outer surface of the piston rods 402. Specifically, when the movable cover 201 slides upward inside the slide groove 203, the movable cover 201 synchronously drives the top connecting plate 204 to move upward, and the connecting plate 204 drives the piston rods 402 upward along the axial direction of the piston tubes 400. The movement causes the piston disc 401 to move upwards and compress inside the piston tube 400. This compression reduces the volume of gas inside the piston tube 400 and increases the gas pressure. The high-pressure gas quickly enters the sealing airbag 301 through the inflation tube 404, pushing the sealing airbag 301 to expand radially until it is tightly fitted with the outer wall of the movable cover 201. At this time, an interference fit is formed between the sealing airbag 301 and the movable cover 201, which significantly improves the sealing performance at the sliding fit. When the movable cover 201 slides downwards, the return spring 403 pushes the piston disc 401 to return downwards, creating a negative pressure inside the piston tube 400. The gas in the sealing airbag 301 flows back to the piston tube 400, and the airbag contracts, avoiding obstruction to the downward adjustment of the movable cover 201. The sealing is strengthened during the adjustment of the movable cover 201, reducing the possibility of dust accumulating in the gap between the movable cover 201 and the fixed cover 200 during polishing.

[0036] Example 2:

[0037] Please refer to the following: Figures 1-9 The present invention provides a technical solution: a dust suction component is provided at the front end of the grinding gun 100, which adsorbs the dust generated inside the dust cover during grinding.

[0038] In this embodiment, the dust collection assembly includes a support plate. A miniature suction fan 500 and a filter box 501 are mounted on the top outer surface of the support plate. The suction end of the miniature suction fan 500 is connected to the interior of the filter box 501. The other end of the filter box 501 is connected to two suction pipes 502, both of which are connected to the interior of the fixed cover 200. A fixed plate 503 is installed inside the filter box 501. A filter frame is mounted on the outer surface of the fixed plate 503, and a filter screen 504 is mounted on the outer surface of the filter frame. Specifically, the miniature suction fan 500 is started simultaneously with the start of the grinding operation. The operation generates a negative pressure adsorption force, which is transmitted to the two suction pipes 502 through the air passage inside the filter box 501. The suction inlet of the suction pipe 502 forms a negative pressure area inside the protective cover, which draws the dust generated during the grinding process into the suction pipe 502 in real time. The airflow carrying the dust enters the filter box 501 through the suction pipe 502 and then passes through the filter screen 504. The dust particles are intercepted by the filter screen 504, preventing the dust from entering the interior of the micro suction fan 500 and causing damage to the micro suction fan 500. The purified airflow is discharged through the exhaust end of the micro suction fan 500, achieving efficient separation and collection of dust.

[0039] In this embodiment, a cleaning component is provided on the outer surface of the filter screen 504, which is used to clean the dust accumulated on the surface of the filter screen 504.

[0040] In this embodiment, the cleaning assembly includes a cleaning shaft 600 that rotatably passes through the outer surface of the filter frame. A fan wheel 601 is mounted on the end of the cleaning shaft 600 facing the miniature suction fan 500. A cleaning plate 602 is fixedly sleeved on the outer surface of the cleaning shaft 600, and a cleaning brush 603 is mounted on the outer surface of the cleaning plate 602. The cleaning brush 603 is in contact with the surface of the filter screen 504 away from the miniature suction fan 500. A collection box 604 is movably inserted inside the filter box 501, located below the filter screen 504. Specifically, during the operation of the miniature suction fan 500, the airflow generated at its inlet drives the fan wheel 601 to rotate at high speed. The rotation of the fan wheel 601 synchronously drives the cleaning shaft 600 to rotate. The cleaning plate 600 drives multiple cleaning plates 602 to rotate in a circumferential direction. The cleaning plates 602 drive the cleaning brushes 603 to sweep across the surface of the filter screen 504. Through the frictional contact between the cleaning brushes 603 and the surface of the filter screen 504, the dust particles adsorbed on the filter screen 504 can be swept off, preventing the filter screen 504 from being blocked by dust accumulation, ensuring smooth airflow, and maintaining stable dust collection efficiency. The swept-off dust falls into the collection box 604 below under the action of gravity for centralized collection and collection, which is convenient for subsequent unified treatment. In order to improve the sealing performance of the collection box 604, a rubber sealing gasket is provided at the connection between the collection box 604 and the filter box 501, which can effectively fill the assembly gap between the two and prevent the airflow carrying dust from leaking out from the gap.

[0041] Example 3:

[0042] Please refer to the following: Figures 1-9 The present invention provides a technical solution: In this embodiment, a drive assembly is provided inside the filter box 501 to provide driving force for the rotation of the cleaning shaft 600. The drive assembly includes a first gear 700 sleeved on the surface of the cleaning shaft 600. An electric push rod 701 is fixedly installed on the top inner wall of the filter box 501. An installation plate is installed on the output end of the electric push rod 701. A motor 702 is installed on the bottom outer surface of the installation plate. A second gear 703 is sleeved on the output end of the motor 702. The second gear 703 is located above the first gear 700 and is on the same vertical plane. Specifically, during the polishing process, when the suction power of the micro-suction fan 500 is insufficient to rotate the cleaning shaft 600, the electric push rod 701 is activated. The output end of the electric push rod 701 extends downward, driving the mounting plate and the micro motor 702 to move down synchronously, causing the second gear 703 to gradually approach and eventually mesh with the first gear 700. Subsequently, the micro motor 702 is activated, and its output end drives the second gear 703 to rotate. Through gear meshing, the first gear 700 is driven to rotate, thereby driving the cleaning shaft 600 to rotate, achieving forced cleaning of the filter screen 504 by the cleaning brush 603. After cleaning, the electric push rod 701 retracts, causing the second gear 703 to move upward and reset, disengaging from the first gear 700, thus avoiding interference with the drive mode of the impeller 601. This drive component setting realizes dual-mode switching of cleaning power, ensuring energy-saving operation without power under normal working conditions, and solving the problem of insufficient power of the cleaning component under special working conditions, significantly improving the reliability and adaptability of the device.

[0043] The teeth of both the first gear 700 and the second gear 703 are designed with a conical structure. The two sides of the teeth are symmetrical conical slopes. This conical structure can play an automatic centering and guiding role in the meshing process of the second gear 703 approaching the first gear 700, so that the teeth of the second gear 703 can be accurately aligned with the tooth groove of the first gear 700 and smoothly engaged, ultimately forming a tight meshing transmission relationship.

[0044] Working principle: When using this invention, the operator holds the grinding gun 100 and drives the grinding head 101 to rotate by turning on the power of the grinding gun 100. The sealing lip 202 is pressed tightly against the surface of the stone and downward force is applied, so that the movable cover 201 can slide upward inside the slide groove 203. When the movable cover 201 slides upward inside the slide groove 203, it drives the connecting plate 204 to move upward. The connecting plate 204 drives the piston rod 402 to move upward. The piston rod 402 drives the piston disc 401 to move inside the piston tube 400, which increases the air pressure inside the piston tube 400. The air pressure enters the sealing air bladder 301 through the inflation tube 404, causing the sealing air bladder 301 to expand. This increases the sealing between the sealing air bladder 301 and the movable cover 201, reducing the possibility of dust accumulating in the gap between the movable cover 201 and the fixed cover 200 during grinding. During the polishing process, the miniature suction fan 500 operates, generating suction force. This suction force passes through the filter box 501 and the dust suction pipe 502, adsorbing the dust generated during polishing. The dust enters the filter box 501 and is filtered by the filter screen 504, preventing dust from entering the miniature suction fan. While the miniature suction fan 500 is operating, the airflow causes the impeller 601 to rotate, which in turn drives the cleaning shaft 600 to rotate. When 600 rotates, it drives the cleaning plate 602 to rotate, which in turn drives the cleaning brush 603 to rotate. The cleaning brush 603 cleans the dust adhering to the surface of the filter screen 504, preventing the filter screen 504 from becoming clogged and affecting the airflow. The dust falls into the collection box 604 for collection. A sealing gasket is provided at the connection between the collection box 604 and the filter box 501, thereby increasing the sealing between the collection box 604 and the filter box 501 and preventing airflow and dust from leaking out from between the collection box 604 and the filter box 501. When the suction power of the miniature suction fan 500 is insufficient to rotate the cleaning shaft 600, the electric push rod 701 operates, driving the second gear 703 to move, so that the second gear 703 is engaged with the first gear 700. The motor 702 operates, driving the second gear 703 to rotate, which in turn drives the first gear 700 to rotate, thus causing the cleaning shaft 600 to rotate. In this way, the electric drive of the motor 702 provides power for the rotation of the cleaning shaft 600, preventing the suction power of the miniature suction fan 500 from being insufficient to rotate the impeller 601 and thus drive the cleaning shaft 600 to rotate.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stone sculpture polishing auxiliary device, characterized in that, include: A grinding gun (100) with a grinding head (101) installed at its output end. A protective cover is located outside the grinding head (101). The protective cover includes a fixed cover (200) and a movable cover (201). The movable cover (201) is slidably inserted inside the fixed cover (200). A sealing lip (202) is provided at the bottom of the movable cover (201). A sealing assembly is located between the fixed cover (200) and the movable cover (201) to increase the sealing between the fixed cover (200) and the movable cover (201); An inflation component is located inside the fixed cover (200). The inflation component inflates the interior of the sealing component to improve the sealing performance of the sealing component.

2. The stone sculpture polishing auxiliary device according to claim 1, characterized in that, The fixed cover (200) has a sliding groove (203) inside, and the movable cover (201) is movably inserted into the sliding groove (203). A connecting plate (204) is fixedly connected to the top outer surface of the movable cover (201), and the connecting plate (204) is slidably connected to the inside of the sliding groove (203).

3. The stone sculpture polishing auxiliary device according to claim 2, characterized in that, The sealing assembly includes two mounting slots (300), which are respectively opened on the inner walls of the fixed cover (200) located on both sides of the movable cover (201). A sealing airbag (301) is installed inside the mounting slot (300). The sealing airbag (301) is inflated by the inflation assembly.

4. The stone sculpture polishing auxiliary device according to claim 3, characterized in that, The inflation assembly includes multiple piston tubes (400), which are circumferentially distributed inside the fixed cover (200) and interconnected. Multiple piston rods (402) are fixedly connected to the top outer surface of the connecting plate (204), and piston discs (401) are fixedly connected to the top outer surface of the piston rods (402). The piston discs (401) are slidably connected to the inside of the piston tubes (400), and an inflation tube (404) is connected to the outer surface of the piston tubes (400). The other end of the inflation tube (404) is connected to the inside of the sealing airbag (301).

5. The stone sculpture polishing auxiliary device according to claim 4, characterized in that, A spring (403) is fixedly connected between the piston disc (401) and the connecting plate (204), and the spring (403) is sleeved on the outer surface of the piston rod (402).

6. The stone sculpture polishing auxiliary device according to claim 1, characterized in that, The front end of the polishing gun (100) is equipped with a dust suction component, which adsorbs the dust generated inside the dust cover during polishing.

7. The stone sculpture polishing auxiliary device according to claim 6, characterized in that, The dust collection assembly includes a support plate, on the top outer surface of which a miniature suction fan (500) and a filter box (501) are mounted. The suction end of the miniature suction fan (500) is connected to the interior of the filter box (501). The other end of the filter box (501) is connected to two suction pipes (502), both of which are connected to the interior of a fixed cover (200). A fixed plate (503) is mounted inside the filter box (501), and a filter frame is mounted on the outer surface of the fixed plate (503). A filter screen (504) is mounted on the outer surface of the filter frame.

8. The stone sculpture polishing auxiliary device according to claim 7, characterized in that, The outer surface of the filter screen (504) is provided with a cleaning component, which is used to clean the dust accumulated on the surface of the filter screen (504).

9. The stone sculpture polishing auxiliary device according to claim 8, characterized in that, The cleaning assembly includes a cleaning shaft (600) that rotates through the outer surface of the filter frame. A fan wheel (601) is installed at the end of the cleaning shaft (600) facing the micro suction fan (500). A cleaning plate (602) is fixedly sleeved on the outer surface of the cleaning shaft (600). A cleaning brush (603) is installed on the outer surface of the cleaning plate (602). The cleaning brush (603) is in contact with the surface of the filter screen (504) away from the micro suction fan (500). A collection box (604) is movably inserted inside the filter box (501). The collection box (604) is located below the filter screen (504).

10. The stone sculpture polishing auxiliary device according to claim 9, characterized in that, The filter box (501) is equipped with a drive assembly, which provides driving force for the rotation of the cleaning shaft (600). The drive assembly includes a first gear (700) sleeved on the surface of the cleaning shaft (600). An electric push rod (701) is fixedly installed on the top inner wall of the filter box (501). An installation plate is installed on the output end of the electric push rod (701). A motor (702) is installed on the bottom outer surface of the installation plate. A second gear (703) is sleeved on the output end of the motor (702). The second gear (703) is located above the first gear (700) and is on the same vertical plane.

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