Efficient cleaning equipment for surface of photovoltaic cell

Abstract

The invention discloses photovoltaic cell surface efficient cleaning equipment, and relates to the technical field of cleaning equipment, the photovoltaic cell surface efficient cleaning equipment comprises a supporting mechanism, a conveying mechanism, a cleaning mechanism and a circulating mechanism; and the cleaning mechanism comprises a support, a sliding groove is formed in the support, a sliding block is slidably connected into the sliding groove, a threaded rod is inserted into the sliding block in a penetrating mode, and the threaded rod is in threaded connection with the sliding block. According to the efficient cleaning equipment for the surface of the photovoltaic battery piece, an automatic feeding and discharging structure is introduced, the conveying speed is reasonably regulated and controlled, the photovoltaic battery piece is moved to a cleaning procedure, and the cleaning efficiency is conveniently improved; the cleaning brush is in contact with the surface of the battery piece to clean the surface of the battery piece, and the second scraper blade is used for scraping the cleaned impurities and cleaning liquid on the surface of the battery piece, so that the treatment and cleaning effects on small particles and stubborn stains on the surface of the battery piece are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and particularly to a high-efficiency cleaning equipment for the surface of photovoltaic cells. Background Art

[0002] Photovoltaic cells, also known as solar cells, are semiconductor devices that use sunlight to generate direct current. They can convert solar energy into electrical energy and are the basic units of photovoltaic power generation. During the production process of photovoltaic cells, impurities and dust will accumulate on their surfaces, which will reduce the intensity of sunlight irradiation during use, thereby reducing the power conversion efficiency. Therefore, after production, cleaning equipment is used to clean the surface of photovoltaic cells.

[0003] However, the existing resonance phononic crystal sound insulation panels based on particle damping have the following deficiencies:

[0004] When the cleaning equipment cleans the photovoltaic cells, the cleaning speed is slow, and the cleaning effect on the fine particles and stubborn stains on the surface of the cells is not good, which affects the solar energy absorption efficiency of the photovoltaic cells; during the cleaning process of some cleaning equipment, the pressure cannot be monitored and adjusted, which may cause scratches, abrasions or electrical property damage to the surface of the cells.

[0005] Therefore, we propose a high-efficiency cleaning equipment for the surface of photovoltaic cells to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-efficiency cleaning equipment for the surface of photovoltaic cells. By introducing an automatic loading and unloading structure and reasonably regulating the conveying speed, the photovoltaic cells are moved to the cleaning process. During cleaning, first, a spray head is used to spray an appropriate amount of cleaning liquid onto the surface of the photovoltaic cells, and a cleaning brush contacts the surface of the cells to clean them. A second scraper is used to scrape off the impurities and cleaning liquid cleaned on the surface of the cells, so as to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A high-efficiency cleaning equipment for the surface of photovoltaic cells, comprising: a support mechanism, a conveying mechanism, a cleaning mechanism and a circulation mechanism; the cleaning mechanism includes a bracket, a chute is opened inside the bracket, a slider is slidably connected inside the chute, a screw rod is inserted through the slider, the screw rod is threadedly connected to the slider, a second telescopic rod is fixedly installed at the bottom of the slider, the telescopic end of the second telescopic rod is fixedly connected to a mounting plate, a cleaning brush and a second scraper are respectively installed at the bottom of the mounting plate, a pressure sensor is fixedly installed on one side of the second scraper, a second motor is fixedly installed at one end of the bracket, and the output end of the second motor is fixedly connected to one end of the screw rod.

[0008] Preferably, the support mechanism includes a cleaning water tank, a group of support plates are fixedly installed on one side of the cleaning water tank, a feeding roller is rotatably connected between the group of support plates, a group of first telescopic rods are symmetrically inserted into the cleaning water tank, and fixing blocks are fixedly installed at the telescopic ends of the group of first telescopic rods.

[0009] Preferably, proximity sensors are fixedly installed on the inner walls of the opposite sides of the cleaning water tank, a filter plate is slidably connected inside the cleaning water tank, a water outlet is penetrated and opened on one side of the cleaning water tank, and a plug plate is clamped inside the water outlet.

[0010] Preferably, a blanking plate and a supporting plate are fixedly installed at one end of the cleaning water tank, the blanking plate is arranged above the supporting plate, and one end of the supporting plate is fixedly communicated with one side of the cleaning water tank.

[0011] Preferably, the conveying mechanism includes a group of gears and a limiting plate, and a conveyor belt is meshed with the outer surfaces of the group of gears.

[0012] Preferably, a first scraper is fixedly installed on one side of the limiting plate, and the first scraper is arranged on the outer surface of the conveyor belt.

[0013] Preferably, the circulating mechanism includes a circulating pump, a filter element is fixedly arranged at the water inlet end of the circulating pump, and a circulating water pipe is fixedly communicated with the water outlet end of the circulating pump.

[0014] Preferably, the water outlet end of the circulating water pipe is fixedly communicated with a water distributor, and a group of spray heads are fixedly installed at the bottom of the water distributor.

[0015] Preferably, the group of gears are rotatably connected with the cleaning water tank, the first scraper is inserted into one side of the cleaning water tank, the conveyor belt is arranged on the top of the filter plate, and a first motor is fixedly installed on the front surface of the cleaning water tank, and the output end of the first motor is fixedly connected with one end of a gear.

[0016] Preferably, the bracket is fixedly installed on the top of the cleaning water tank, the cleaning brush and the second scraper are arranged on the top of the conveyor belt, the circulating pump is fixedly installed on one side of the cleaning water tank, the filter element is arranged inside the cleaning water tank, and the water distributor is fixedly installed on one side of the mounting plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present invention improves the cleaning efficiency by introducing an automated loading and unloading structure and reasonably regulating the conveying speed to move the photovoltaic cell wafers to the cleaning process. During cleaning, first, an appropriate amount of cleaning liquid is sprayed onto the surface of the photovoltaic power generation wafers by a nozzle, and then a cleaning brush contacts the surface of the cell wafers to clean them. Next, a second scraper is used to scrape off the impurities and cleaning liquid cleaned from the surface of the cell wafers, improving the cleaning effect on the micro-particles and stubborn stains on the surface of the cell wafers.

[0019] 2. The present invention fixes and installs a pressure sensor on one side of the second scraper. When the second scraper and the cleaning brush contact the surface of the photovoltaic cell wafer, the pressure sensor is used to detect the pressure exerted on its surface, avoiding the problems of scratches, abrasions or electrical property damage to the surface of the cell wafer caused by excessive pressure, and the cleaning effect being affected by too little pressure.

[0020] 3. The present invention slidably connects a filter plate inside the cleaning water tank. When the cleaning liquid flows back, the filter plate is used to filter the cleaning liquid to prevent impurities from falling to the bottom of the cleaning water tank. A filter element is used to filter the coolant entering the inside of the circulation pump again to prevent blockage of the circulation water pipe, improving the utilization rate of the cleaning liquid and avoiding increasing the cleaning cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of a high-efficiency surface cleaning device for photovoltaic cell wafers of the present invention;

[0022] Figure 2 is a side view of a high-efficiency surface cleaning device for photovoltaic cell wafers of the present invention;

[0023] Figure 3 is a cross-sectional view of a high-efficiency surface cleaning device for photovoltaic cell wafers of the present invention;

[0024] Figure 4 is a perspective view of a support mechanism in a high-efficiency surface cleaning device for photovoltaic cell wafers of the present invention;

[0025] Figure 5 is an exploded view of a support mechanism in a high-efficiency surface cleaning device for photovoltaic cell wafers of the present invention;

[0026] Figure 6 is a perspective view of a conveying mechanism in a high-efficiency surface cleaning device for photovoltaic cell wafers of the present invention;

[0027] Figure 7 is a perspective view of a cleaning mechanism in a high-efficiency surface cleaning device for photovoltaic cell wafers of the present invention;

[0028] Figure 8 is a perspective view of a circulation mechanism in a high-efficiency surface cleaning device for photovoltaic cell wafers of the present invention.

[0029] In the figure: 1. Support mechanism; 101. Cleaning water tank; 102. Support plate; 103. Loading roller; 104. First telescopic rod; 105. Fixed block; 106. Proximity sensor; 107. Filter plate; 108. Water outlet; 109. Plug plate; 110. Feeding plate; 111. Support plate; 2. Conveying mechanism; 201. Gear; 202. Conveyor belt; 203. Limiting plate; 204. First scraper; 205. First motor; 3. Cleaning mechanism; 301. Bracket; 302. Chute; 303. Slide block; 304. Screw; 305. Second telescopic rod; 306. Mounting plate; 307. Cleaning brush; 308. Second scraper; 309. Pressure sensor; 310. Second motor; 4. Circulation mechanism; 401. Circulation pump; 402. Filter element; 403. Circulation water pipe; 404. Water distributor; 405. Sprinkler head. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to the attached Figure 1 - attached Figure 8 As shown, the present invention provides a technical solution: a high-efficiency cleaning device for the surface of photovoltaic cells, including a support mechanism 1, a conveying mechanism 2, a cleaning mechanism 3 and a circulation mechanism 4.

[0032] Example 1, according to Figure 7 As shown, the cleaning mechanism 3 includes a bracket 301. A chute 302 is provided inside the bracket 301. A slide block 303 is slidably connected inside the chute 302. A screw 304 is inserted through the slide block 303. The screw 304 is threadedly connected to the slide block 303. A second telescopic rod 305 is fixedly installed at the bottom of the slide block 303. The telescopic end of the second telescopic rod 305 is fixedly connected to a mounting plate 306. A cleaning brush 307 and a second scraper 308 are respectively installed at the bottom of the mounting plate 306. A pressure sensor 309 is fixedly installed on one side of the second scraper 308. A second motor 310 is fixedly installed at one end of the bracket 301. The output end of the second motor 310 is fixedly connected to one end of the screw 304

[0033] The effects achieved by the entire Embodiment 1 are as follows: By setting the bracket 301, a chute 302 is opened inside the bracket 301, a slider 303 is slidably connected inside the chute 302, a screw 304 is inserted through the slider 303, the second motor 310 is fixedly installed at one end of the bracket 301, the output end of the second motor 310 is fixedly connected to one end of the screw 304, the second motor 310 is started, and the rotation of the second motor 310 drives the screw 304 to be threadedly connected to the slider 303, so that the slider 303 slides inside the chute 302 to adjust the position of the slider 303; then, a second telescopic rod 305 is fixedly installed at the bottom of the slider 303, a mounting plate 306 is fixedly connected to the telescopic end of the second telescopic rod 305, a cleaning brush 307 and a second scraper 308 are respectively installed at the bottom of the mounting plate 306, a pressure sensor 309 is fixedly installed on one side of the second scraper 308, by adjusting the length of the second telescopic rod 305, the cleaning brush 307 and the second scraper 308 are arranged on the surface of the photovoltaic cell, and the pressure sensor 309 contacts the surface of the photovoltaic cell to detect the pressure on the contact surface between the second scraper 308 and the photovoltaic cell, avoiding the problems of scratches, abrasions or electrical property damage to the surface of the cell caused by excessive pressure, and poor cleaning effect caused by too small pressure. Then, the rotation of the second motor 310 drives the cleaning brush 307 and the second scraper 308 to slide across the surface of the photovoltaic cell in sequence to clean its surface.

[0034] Embodiment 2. As shown in Figure 4 and Fig. 5, the support mechanism 1 includes a cleaning water tank 101, a group of support plates 102 are fixedly installed on one side of the cleaning water tank 101, a feeding roller 103 is rotatably connected between the group of support plates 102, a group of first telescopic rods 104 are symmetrically inserted inside the cleaning water tank 101, and fixing blocks 105 are fixedly installed at the telescopic ends of the group of first telescopic rods 104; proximity sensors 106 are fixedly installed on the inner walls of the opposite sides of the cleaning water tank 101, a filter plate 107 is slidably connected inside the cleaning water tank 101, a water outlet 108 is opened through one side of the cleaning water tank 101, and a plug plate 109 is clamped inside the water outlet 108; a blanking plate 110 and a support plate 111 are fixedly installed at one end of the cleaning water tank 101, the blanking plate 110 is arranged above the support plate 111, and one end of the support plate 111 is fixedly communicated with one side of the cleaning water tank 101.

[0035] The effects achieved by the entire Embodiment 2 are as follows: By setting up the cleaning water tank 101, it is convenient to store the cleaning liquid to clean the stubborn stains on the surface of the photovoltaic cell. At one end of the cleaning water tank 101, a set of support plates 102 are fixedly installed. A feeding roller 103 is rotatably connected between the set of support plates 102. When in use, the photovoltaic cell is set on the top of the feeding roller 103. Through the rotational connection between the feeding roller 103 and the support plates 102, the photovoltaic cell is pushed to the designated area for surface cleaning. A set of first telescopic rods 104 are inserted through the inside of the cleaning water tank 101. Fixed blocks 105 are fixedly installed at the telescopic ends of the set of first telescopic rods 104. The photovoltaic cell is set between the set of fixed blocks 105 to facilitate its fixation and prevent its position from shifting during the cleaning process, which affects the cleaning efficiency. Then, a proximity sensor 106 is fixedly installed on the opposite side of the cleaning water tank 101. When one end of the photovoltaic cell approaches the detection area of the proximity sensor 106, the length of the first telescopic rod 104 is adjusted, and the photovoltaic cell is fixed by the fixed block 105. Then, a filter plate 107 is slidably connected inside the cleaning water tank 101. When the cleaning liquid flows back after cleaning the photovoltaic cell, the cleaning liquid is filtered to facilitate the recycling of the cleaning liquid and also reduce the problem of blockage of the pipes by impurities in the cleaning liquid. An outlet 108 is penetrated and opened on one side of the cleaning water tank 101. A plug plate 109 is clamped inside the outlet 108. The outlet 108 is used to release the excessively used cleaning liquid inside the cleaning water tank 101, and the plug plate 109 is used to block the outlet 108 to prevent the leakage of the cleaning liquid during normal use. Then, a blanking plate 110 and a support plate 111 are fixedly installed at the other end of the cleaning water tank 101. The support plate 111 is set at the bottom of the blanking plate 110. The blanking plate 110 plays a guiding role for the cleaned photovoltaic cell to facilitate its entry into the next working station. The support plate 111 guides the cleaning liquid on the blanking plate 110 where the photovoltaic cell is placed to re-enter the inside of the cleaning water tank 101, avoiding waste of the cleaning liquid.

[0036] Embodiment 3, according to Figures 1-8As shown in the figure, the conveying mechanism 2 includes a set of gears 201 and a limiting plate 203. The outer wall of the set of gears 201 is meshed and connected with a conveyor belt 202; a first scraper 204 is fixedly installed on one side of the limiting plate 203, and the first scraper 204 is arranged on the outer wall of the conveyor belt 202; the circulating mechanism 4 includes a circulating pump 401. A filter element 402 is fixedly arranged at the water inlet end of the circulating pump 401, and the water outlet end of the circulating pump 401 is fixedly communicated with a circulating water pipe 403; the water outlet end of the circulating water pipe 403 is fixedly communicated with a water distributor 404, and a set of spray heads 405 are fixedly installed at the bottom of the water distributor 404; the set of gears 201 is rotatably connected with the cleaning water tank 101. The first scraper 204 is inserted into one side of the cleaning water tank 101. The conveyor belt 202 is arranged on the top of the filter plate 107. A first motor 205 is fixedly installed on the front of the cleaning water tank 101, and the output end of the first motor 205 is fixedly connected with one end of a gear 201; a bracket 301 is fixedly installed on the top of the cleaning water tank 101. A cleaning brush 307 and a second scraper 308 are arranged on the top of the conveyor belt 202. The circulating pump 401 is fixedly installed on one side of the cleaning water tank 101. The filter element 402 is arranged inside the cleaning water tank 101. The water distributor 404 is fixedly installed on one side of the mounting plate 306.

[0037] The effect achieved by the entire embodiment 3 is as follows: By rotatably connecting a set of gears 201 inside the cleaning water tank 101, meshing and connecting a conveyor belt 202 to the outer wall of the set of gears 201, fixedly installing the first motor 205 on one side of the cleaning water tank 101, and fixedly connecting the output end of the first motor 205 to one end of a gear 201, the first motor 205 is used to drive the gear 201 to be meshed and connected with the conveyor belt 202, which is convenient for carrying and conveying photovoltaic cells, so that they can pass through each cleaning process in sequence. Then, the circulating pump 401 is fixedly installed on one side of the cleaning water tank 101, a filter element 402 is fixedly arranged at the water inlet end of the circulating pump 401, and the filter element 402 is arranged inside the cleaning water tank 101. The filter element 402 is used to filter the cleaning liquid inside the cleaning water tank 101. The filtered cleaning liquid is pumped by the circulating pump 401 into the inside of the circulating water pipe 403 connected to the water outlet end of the circulating pump 401, and then enters the water distributor 404 from the circulating water pipe 403, and is sprayed onto the surface of the photovoltaic cell by the spray heads 405 at the bottom of the water distributor 404 to clean the dirt on its surface. By fixedly connecting one side of the water distributor 404 to one side of the mounting plate 306, during cleaning, the spray heads 405 move along with the cleaning brush 307 and the second scraper 308 to clean the surface of the photovoltaic power generation sheet.

[0038] The working principle of the entire device is as follows: When the device is in use, first, by placing the photovoltaic cell on the top of the loading roller 103, and using the fact that the loading roller 103 is rotatably connected to the support plate 102, the photovoltaic conductive sheet on the top of the loading roller 103 is pushed to the top of the conveyor belt 202. Then, the first motor 205 drives the gear 201 to be meshed with the conveyor belt 202 to convey the photovoltaic conductive sheet to the other end of the conveyor belt 202. The position of the photovoltaic conductive sheet is detected by the proximity sensor 106. When the proximity sensor 106 detects that the photovoltaic conductive sheet is approaching, the first motor 205 stops rotating. At this time, the first telescopic rod 104 drives the fixed block 105 to extend and abut against both sides of the photovoltaic cell to fix its position, preventing its position from shifting with the cleaning component during the cleaning process, which may affect the cleaning quality and efficiency. Secondly, the second motor 310 rotates to drive the screw 304 to be threadedly connected with the slider 303, so that the slider 303 slides inside the chute 302 to adjust the position of the cleaning brush 307. Then, the length of the second telescopic rod 305 is adjusted to adjust the height of the cleaning brush 307 and the second scraper 308. The pressure sensor 309 fixedly installed on one side of the second scraper 308 is used to detect the pressure on the contact surface with the photovoltaic cell, avoiding the problems of scratching, abrasion or electrical property damage to the surface of the cell due to excessive pressure, and poor cleaning effect due to too small pressure. The circulating pump 401 is used to extract the coolant inside the cleaning water tank 101, and the circulating water pipe 403 transports the coolant to the water distributor 404. After being pressurized by the water distributor 404, the coolant is sprayed onto the surface of the photovoltaic cell through the nozzle 405. Then, the cleaning brush 307 and the second scraper 308 will sequentially pass through the surface of the photovoltaic cell to clean the surface of the cell, and scrape the dirt and coolant after cleaning onto the top of the conveyor belt 202. When the second scraper 308 moves to one end of the photovoltaic cell close to the loading roller 103, the length of the first telescopic rod 104 is adjusted to release the clamping of the photovoltaic cell, and the first motor 205 is restarted to continue transporting the cleaned photovoltaic cell forward, so that it slides off the surface of the blanking plate 110 to the next station for processing. The coolant adhered to the bottom of the cell falls into the support plate 111 through the leakage holes opened on the blanking plate 110 and slides off the surface of the support plate 111 into the inside of the cleaning water tank 101 to collect the cleaning liquid, avoiding waste. Finally, the first scraper 204 is inserted on one side of the cleaning water tank 101, and the first scraper 204 is arranged on the surface of the conveyor belt 202 to clean the impurities accumulated on the surface of the conveyor belt 202, avoiding the accumulation of impurities and causing pollution to the bottom of the photovoltaic cell. The scraped cleaning liquid is filtered by the filter plate 107 and stored inside the cleaning water tank 101. After being filtered again by the filter element 402, it is extracted by the circulating pump 401 and sprayed onto the photovoltaic cell to clean it, realizing the recycling of the cleaning liquid and reducing the cost consumption.

[0039] 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A photovoltaic cell surface efficient cleaning device, characterized in that: include: A supporting mechanism (1), a conveying mechanism (2), a cleaning mechanism (3) and a circulating mechanism (4); The cleaning mechanism (3) comprises a bracket (301), a slide groove (302) is provided inside the bracket (301), a slider (303) is slidably connected inside the slide groove (302), a screw rod (304) is inserted through the inside of the slider (303), the screw rod (304) is threadedly connected to the slider (303), a second telescopic rod (305) is fixedly installed at the bottom of the slider (303), the telescopic end of the second telescopic rod (305) is fixedly connected to a mounting plate (306), a cleaning brush (307) and a second scraper (308) are respectively installed at the bottom of the mounting plate (306), a pressure sensor (309) is fixedly installed on one side of the second scraper (308), a second motor (310) is fixedly installed at one end of the bracket (301), and an output end of the second motor (310) is fixedly connected to one end of the screw rod (304).

2. The photovoltaic cell surface efficient cleaning device according to claim 1, characterized in that: The support mechanism (1) comprises a clean water tank (101), a group of support plates (102) are fixedly mounted on one side of the clean water tank (101), a feeding roller (103) is rotatably connected between the support plates (102), a group of first telescopic rods (104) are symmetrically inserted inside the clean water tank (101), and a fixed block (105) is fixedly mounted on the telescopic ends of the group of first telescopic rods (104).

3. The photovoltaic cell surface efficient cleaning device according to claim 2, characterized in that: A proximity sensor (106) is fixedly mounted on the inner wall of the opposite side of the clean water tank (101), the interior of the clean water tank (101) is slidably connected to a filter plate (107), a water outlet (108) is provided through one side of the clean water tank (101), and the interior of the water outlet (108) is connected to a plug plate (109).

4. The photovoltaic cell surface efficient cleaning device according to claim 2, characterized in that: A feed plate (110) and a support plate (111) are fixedly mounted on one end of the clean water tank (101); the feed plate (110) is arranged above the support plate (111); and one end of the support plate (111) is fixedly connected to one side of the clean water tank (101).

5. The photovoltaic cell surface efficient cleaning device according to claim 3, characterized in that: The conveying mechanism (2) comprises a group of gears (201) and a limiting plate (203), and the outer wall of the group of gears (201) is meshed and connected to the conveying belt (202).

6. The photovoltaic cell surface efficient cleaning device according to claim 5, characterized in that: A first scraper (204) is fixedly mounted on one side of the limiting plate (203), and the first scraper (204) is arranged on the outer wall of the conveyor belt (202).

7. The photovoltaic cell surface efficient cleaning device according to claim 5, characterized in that: The circulation mechanism (4) comprises a circulation pump (401), a filter element (402) is fixedly arranged at the water inlet end of the circulation pump (401), and a water outlet end of the circulation pump (401) is fixedly connected to a circulation water pipe (403).

8. The photovoltaic cell surface efficient cleaning device according to claim 7, characterized in that: The water outlet end of the circulating water pipe (403) is fixedly connected to a water distributor (404), and a group of nozzles (405) are fixedly installed at the bottom of the water distributor (404).

9. The photovoltaic cell surface efficient cleaning device according to claim 6, characterized in that: A group of the gears (201) are rotatably connected to the clean water tank (101), the first scraper (204) is inserted into one side of the clean water tank (101), the conveyor belt (202) is arranged on the top of the filter plate (107), and the first motor (205) is fixedly installed on the front side of the clean water tank (101), and the output end of the first motor (205) is fixedly connected to one end of a gear (201).

10. The photovoltaic cell surface efficient cleaning device according to claim 8, characterized in that: The bracket (301) is fixedly mounted on the top of the clean water tank (101), the cleaning brush (307) and the second scraper (308) are arranged on the top of the conveyor belt (202), the circulating pump (401) is fixedly mounted on one side of the clean water tank (101), the filter element (402) is arranged inside the clean water tank (101), and the water distributor (404) is fixedly mounted on one side of the mounting plate (306).

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