A cleaning device and method for photovoltaic glass panels

Abstract

This invention discloses a cleaning device and method for photovoltaic glass panels, relating to the field of photovoltaic panel cleaning technology. It includes a stain cleaning mechanism with an internal support frame, a pump on one side of the upper end, a sprayer at one end, and a surface pre-cleaning mechanism connected to the sprayer on one side for initial cleaning of the photovoltaic panel surface. This invention simultaneously delivers water mist and compressed air to a composite pipe via the sprayer, guiding the airflow through a duct to a spray duct with a 30° inclined section. This ensures the airflow direction precisely matches the tilt angle of the photovoltaic panel, achieving top-down directional sweeping. Combined with guide plates distributed in tiers from large to small and a multi-segment spray duct layout, it forms a stepped, progressive cleaning mechanism where higher sections are cleaned first, followed by lower sections, effectively preventing debris accumulation or backflow.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic panel cleaning technology, and in particular to a cleaning device and method for photovoltaic glass panels. Background Technology

[0002] For example, patent CN120094886A, entitled "A Cleaning Device and Method for Photovoltaic Glass Panels," includes a housing with a walking mechanism, a cleaning mechanism, and a spraying mechanism mounted on it. The walking mechanism enables the housing to move linearly across the photovoltaic glass panel without tilting during movement. The cleaning mechanism includes a roller brush. This cleaning device, by incorporating the cleaning and spraying mechanisms, allows for the removal of coating damage from the photovoltaic glass panel by a scraper, the sweeping brush to remove scraped coating fragments, and a spray nozzle to apply a coating solution to the cleaned photovoltaic glass panel, ensuring its light transmittance. Simultaneously, the nozzle and scraper also clean the photovoltaic glass panel, thereby improving the cleaning effect.

[0003] Stubborn stains on the surface of photovoltaic panels are difficult to remove completely, and the above-mentioned cleaning methods can easily scratch or damage the anti-reflective coating on the glass surface. At the same time, if the wastewater is not effectively recycled after cleaning, it is easy to leave water stains or watermarks on the panel surface, which significantly reduces the light transmittance and affects the power generation efficiency. Therefore, this application provides a cleaning device and method for photovoltaic glass panels to meet the needs. Summary of the Invention

[0004] The purpose of this application is to provide a cleaning device and method for photovoltaic glass panels, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a cleaning device for photovoltaic glass panels, including a stain cleaning mechanism, a support frame inside the stain cleaning mechanism, a pump on one side of the upper end of the stain cleaning mechanism, a sprayer at one end of the stain cleaning mechanism, a surface preliminary cleaning mechanism connected to the sprayer on one side of the stain cleaning mechanism for preliminary cleaning of the photovoltaic panel surface, and an inclined cleaning mechanism connected to the sprayer on the other side of the stain cleaning mechanism for final cleaning of the photovoltaic panel surface; The support frame is equipped with a sludge suction mechanism, which is used to extract the sewage collected after being cleaned by the inclined cleaning mechanism by a pump. The upper end of the stain cleaning mechanism is equipped with a cleaning component that communicates with the pump and is used to spray sewage to clean the stains on the surface of the cleaning brush inside the stain cleaning mechanism. The pump is used to draw sewage from the sewage suction mechanism and spray the drawn sewage into the interior of the cleaning component. The surface preliminary cleaning mechanism includes an inclined cleaning component and a secondary cleaning component. The inclined cleaning component is used to guide airflow in a progressive manner to sweep and initially clean the dust on the surface of the photovoltaic panel according to the tilt angle of the photovoltaic panel. The secondary cleaning component is set on the inclined cleaning component.

[0006] The stain cleaning mechanism includes two drive mechanisms and multiple spacer support frames. The two drive mechanisms are fixed at both ends of the support frames, and the multiple spacer support frames are fixedly installed on one side of the support frames. The bottom of each of the two drive mechanisms is provided with chucks that abut against both ends of the photovoltaic panel and are used to drive the drive mechanism to move along the photovoltaic panel. Each of the two drive mechanisms is provided with a drive device inside, and a cleaning brush and a shaft are provided between the two drive devices. The outer surface of the shaft is provided with a spiral blade for cleaning stains on the surface of the photovoltaic panel, and the spiral blade is made of rubber.

[0007] The cleaning assembly includes a connecting pipe, one end of which is fixedly connected to the discharge end of the pump. The bottom of the connecting pipe is provided with several connector pipes distributed at equal intervals. One end of each connector pipe is provided with a protective plate. The protective plate is fixedly installed on one side of the spacer support frame and is located above the cleaning brush cylinder. It is used to spray the sewage drawn by the pump onto the surface of the cleaning brush cylinder to clean the stains attached thereon.

[0008] The sludge suction mechanism includes an adsorption tube fixedly connected to the water inlet of the pump. The bottom of the adsorption tube is provided with several conical tubes, and the bottom of each of the conical tubes is provided with an air extraction port fixedly installed inside the support frame.

[0009] The bottom of the air extraction pipe is provided with a baffle, and a scraper for scraping the outer surface of the photovoltaic panel is inclined on one side of the bottom of the baffle. A rubber nozzle is provided at the lower end of the baffle.

[0010] The inclined cleaning mechanism includes a central tube, one end of which is fixedly connected to the output end of the sprayer. Several hollow tubes and nozzles are connected to the bottom of the outer surface of the central tube. Several hollow tubes are fixedly installed on one side of the support frame, and hollow air guides are installed at the bottom of several hollow tubes.

[0011] The inner wall of the hollow air guide is provided with a water pipe, and the bottom of the water pipe is provided with several water spray nozzles. The angle between the water spray nozzles and the surface of the photovoltaic panel is 15°~45°, and the nozzles are located between every two adjacent hollow air guides.

[0012] The inclined cleaning assembly includes a guide plate and a composite pipe fixedly connected to the output end of the sprayer. The bottom of the composite pipe is connected to several conduits distributed at equal intervals. One end of each conduit is provided with a spray conduit, and one end of the spray conduit has an inclined cross-section at a 30° angle. Several guide plates are provided, and the guide plates are fixedly installed at one end of the spray conduit and fixed to one side of the spacer support frame. The upper end of the guide plate is provided with an installation hole.

[0013] The secondary cleaning component includes a guide tube, which is fixedly installed at the bottom of the composite tube and communicates with its interior. The bottom of the guide tube is provided with a conical nozzle, and the interior of the conical nozzle is provided with a guide plate for guiding airflow onto the surface of the photovoltaic panel.

[0014] This invention also provides a method for cleaning photovoltaic glass panels, and the specific cleaning method is as follows: S1. Start the sprayer to spray water mist into the surface preliminary cleaning mechanism and the tilting cleaning mechanism at the same time. The tilting cleaning component guides the airflow to blow onto the photovoltaic panel surface to achieve progressive cleaning. S2. After the initial cleaning by the tilting cleaning component, the secondary cleaning component cleans the photovoltaic panel surface again, while the stain cleaning mechanism moves along the photovoltaic panel surface and uses its internal cleaning brush to deeply clean the stubborn stains on the photovoltaic panel surface. S3. The inclined cleaning mechanism sprays air and water to perform final cleaning on the surface of the photovoltaic panel. The wastewater generated during cleaning flows downward along the surface of the photovoltaic panel, forming a step-by-step cleaning effect. Finally, the wastewater is pumped out by the sewage pumping unit and transported to the interior of the cleaning unit, where it is sprayed onto the cleaning brush surface of the stain removal unit to clean the stains that adhered to it during the deep cleaning process.

[0015] In summary, the technical effects and advantages of this invention are as follows: 1. This invention delivers water mist and compressed air to a composite pipe simultaneously via a sprayer, and guides the airflow through a duct to a spray duct with a 30° inclined section. This ensures that the airflow direction precisely matches the tilt angle of the photovoltaic panel, achieving top-down directional sweeping. Combined with guide plates distributed in a stepped manner from large to small and a multi-segment spray duct layout, a stepped progressive cleaning mechanism is formed, where the higher levels are cleaned first and the lower levels follow suit, effectively preventing debris accumulation or backflow. The water mist wets the dust upon contact, significantly suppressing dust dispersion during the cleaning process and improving environmental friendliness. At the same time, the airflow continuously pushes mud-like dirt downwards, preventing secondary deposition. In addition, some of the gas-liquid mixed medium is diverted to the secondary cleaning component, enters the conical nozzle through the guide pipe, and forms a high-speed airflow perpendicular to the photovoltaic panel surface under the action of the guide plate, performing precise vertical sweeping of residual dust and water stains.

[0016] 2. This invention uses a roller to engage with the edge or frame of the photovoltaic panel, allowing the drive mechanism to move smoothly along the panel surface. During this process, the shaft drives the rubber spiral blade to rotate. Thanks to its excellent elasticity and flexibility, the spiral blade can closely adhere to the surface of the photovoltaic glass. In the water stain environment formed after pre-cleaning, loose pollutants such as dust and mud are fully mixed with water, and the spiral propulsion action pushes the dirty liquid to one side or below the panel surface, achieving efficient scraping and drainage, and avoiding the accumulation of dirt.

[0017] 3. In this invention, while the stain removal mechanism performs deep cleaning on the surface of the photovoltaic panel, the tilting cleaning mechanism simultaneously performs a final rinse. The resulting wastewater flows naturally down the panel surface and collects in the area of ​​the air extraction pipe. The scraper moves closely to the panel surface, scraping and gathering residual water film and particles. In conjunction with the rubber nozzle, it tightly adheres to the surface of the photovoltaic panel under negative pressure. The wastewater is efficiently recovered through the adsorption pipe and the conical pipe, improving the wastewater extraction rate and reducing water stains. The recovered wastewater is pressurized by the pump and transported to the cleaning component. It is then sprayed directionally onto the surface of the high-speed rotating cleaning brush through the connecting pipe and the connector pipe. This provides real-time self-cleaning of stubborn residues such as mud and oil trapped between the brush bristles, avoiding cross-contamination and maintaining long-term cleaning efficiency.

[0018] 4. The sprayer of this invention simultaneously delivers water mist and compressed air to the central pipe. After being guided by the hollow pipe, the airflow is discharged from the hollow structure of the hollow air guide, forming a directional airflow covering the surface of the photovoltaic panel. At the same time, the water pipe continuously supplies water to the spray nozzle. The spray direction is optimized to an angle of 15° to 45° according to the tilt angle of the photovoltaic panel, so that the water flow can efficiently remove stains at the best impact angle, which avoids water splashing or damage to the anti-reflective coating caused by vertical impact, and improves cleaning efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A first-view three-dimensional structural diagram of a cleaning device for photovoltaic glass panels; Figure 2 This is a second-view three-dimensional structural diagram of a cleaning device for photovoltaic glass panels. Figure 3 A third-view stereoscopic structural diagram of a cleaning device for photovoltaic glass panels; Figure 4 A partial first-view three-dimensional structural diagram of a cleaning device for photovoltaic glass panels; Figure 5A partial second-view three-dimensional structural diagram of a cleaning device for photovoltaic glass panels; Figure 6 This is a schematic diagram of the three-dimensional connection structure of the surface preliminary cleaning mechanism; Figure 7 A partial first-view three-dimensional connection structure diagram of the surface preliminary cleaning mechanism; Figure 8 A partial second-view three-dimensional connection structure diagram of the surface preliminary cleaning mechanism; Figure 9 A partial third-view stereoscopic connection structure diagram of the surface preliminary cleaning mechanism; Figure 10 A schematic diagram of the three-dimensional connection structure of the cleaning components and the sludge extraction mechanism; Figure 11 This is a schematic diagram of the three-dimensional connection structure of the cleaning components; Figure 12 A first-person perspective three-dimensional connection structure diagram of the sewage pumping mechanism; Figure 13 A schematic diagram of the two-dimensional connection structure of the sewage pumping mechanism from a second perspective. Figure 14 An exploded view of the three-dimensional connection structure of the sewage pumping mechanism; Figure 15 A schematic diagram of the three-dimensional connection structure between the tilting cleaning mechanism and the surface preliminary cleaning mechanism; Figure 16 A schematic diagram of the three-dimensional connection structure between the tilting cleaning mechanism and the stain removal mechanism; Figure 17 A schematic diagram of the three-dimensional connection structure of the tilting cleaning mechanism; Figure 18 This is a schematic diagram of a partial three-dimensional connection structure of the tilting cleaning mechanism; Figure 19 A schematic diagram of the three-dimensional connection structure between the hollow air guide and the water nozzle; Figure 20 A three-dimensional sectional view of the connection structure of the hollowed-out air guide component; Figure 21 A schematic diagram of the three-dimensional connection structure of the tilting cleaning component; Figure 22 A schematic diagram of the three-dimensional connection structure between the tilting cleaning component and the secondary cleaning component; Figure 23 A schematic diagram of the three-dimensional connection structure of the tilting cleaning component; Figure 24 A schematic diagram of the three-dimensional connection structure between the guide plate and the conduit; Figure 25 A schematic diagram of the three-dimensional connection structure of the secondary cleaning component; Figure 26This is a schematic diagram of the three-dimensional connection structure of the spray duct and the guide plate; Figure 27 This is a schematic diagram of the three-dimensional connection structure of the spray duct.

[0021] In the diagram: 1. Stain cleaning mechanism; 11. Drive mechanism; 13. Spacing support frame; 14. Cleaning brush cylinder; 15. Shaft; 16. Spiral blade; 17. Pick roller; 2. Inclined cleaning mechanism; 21. Central tube; 22. Nozzle; 23. Hollow tube; 24. Hollow air guide; 25. Water pipe; 26. Spray nozzle; 3. Sprayer; 4. Pump; 5. Cleaning assembly; 51. Protective plate; 52. Connecting pipe; 53. Connecting pipe; 6. 61. Surface preliminary cleaning mechanism; 62. Inclined cleaning assembly; 63. Composite pipe; 64. Conduit; 65. Guide plate; 66. Spray conduit; 67. Mounting hole; 68. Secondary cleaning assembly; 69. Conductor pipe; 60. Conical nozzle; 61. Guide plate; 70. Sludge extraction mechanism; 71. Adsorption pipe; 72. Conical pipe; 73. Air extraction port; 74. Partition plate; 75. Rubber nozzle; 76. Scraper; 8. Support frame. Detailed Implementation

[0022] 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.

[0023] refer to Figures 1 to 27 The cleaning device for a photovoltaic glass panel shown includes a stain cleaning mechanism 1, a support frame 8 inside the stain cleaning mechanism 1, a pump 4 on one side of the upper end of the stain cleaning mechanism 1, a sprayer 3 at one end of the stain cleaning mechanism 1, a surface preliminary cleaning mechanism 6 connected to the sprayer 3 on one side of the stain cleaning mechanism 1 for preliminary cleaning of the photovoltaic panel surface, and an inclined cleaning mechanism 2 connected to the sprayer 3 on the other side of the stain cleaning mechanism 1 for final cleaning of the photovoltaic panel surface. The tilting cleaning mechanism 2 is divided into multiple segments along the tilting direction of the photovoltaic panel, and each segment is arranged from high to low. The structural size of each segment is distributed from small to large. The segment located at the high position first cleans the surface of the photovoltaic panel, and the wastewater generated flows down the surface of the photovoltaic panel under the action of gravity. The adjacent lower segment then cleans the wastewater and residual stains flowing in this direction again, thereby performing progressive cleaning of the surface of the photovoltaic panel. The support frame 8 is equipped with a sludge suction mechanism 7, which uses a pump 4 to extract the wastewater collected after being cleaned by the inclined cleaning mechanism 2. The upper end of the stain cleaning mechanism 1 is provided with a cleaning component 5 that communicates with the pump 4 and is used to spray sewage to clean the stains on the surface of the cleaning brush inside the stain cleaning mechanism 1. The pump 4 is used to draw sewage from the sewage extraction mechanism 7 and spray the drawn sewage into the interior of the cleaning component 5. The surface preliminary cleaning mechanism 6 includes an inclined cleaning component 61 and a secondary cleaning component 62. The overall external outline of the inclined cleaning component 61 is approximately triangular in shape and is arranged in segments along the inclined direction of the photovoltaic panel. The structural dimensions of each segment are distributed from large to small. It is used to guide the airflow to sweep and preliminarily clean the dust on the surface of the photovoltaic panel according to the inclined angle of the photovoltaic panel. The secondary cleaning component 62 is set on the inclined cleaning component 61 and is used to clean the dust on the surface of the photovoltaic panel again.

[0024] It is worth noting that when the sprayer 3 is started, water mist is sprayed into the surface preliminary cleaning mechanism 6 and the tilting cleaning mechanism 2 at the same time. The tilting cleaning component 61 guides the airflow to blow onto the photovoltaic panel surface. Since the tilting cleaning component 61 adopts a multi-segment combination distribution and the structural size of each segment is arranged from large to small along the tilting direction of the photovoltaic panel, the largest segment at the top first blows away the debris on the surface of the photovoltaic panel, and then the next segment takes over to clean the debris blown down from the top. Because the tilting cleaning component 61 is designed according to the tilting angle of the photovoltaic panel, the debris being cleaned flows smoothly downwards under the combined action of gravity and airflow, achieving progressive cleaning. Among them, the tilting cleaning component 61 is arranged in sections from large to small along the tilting direction of the photovoltaic panel. The large section at the top first blows away loose debris. Under the combined action of gravity and directional airflow, the stripped dust and particles move downwards and are then cleaned by the next smaller section. This effectively avoids the accumulation or backflow of debris, significantly improves the pre-cleaning efficiency, and reduces the burden of subsequent deep cleaning.

[0025] After the initial cleaning by the tilting cleaning component 61, the secondary cleaning component 62 cleans the surface of the photovoltaic panel again, while the stain cleaning mechanism 1 moves along the surface of the photovoltaic panel and uses its internal cleaning brush to deeply clean the stubborn stains on the surface of the photovoltaic panel. In addition to the initial cleaning, the secondary cleaning component 62 uses vertically guided airflow to finely clean the residual dust. At the same time, the stain cleaning mechanism 1 uses rubber spiral blades 16 and rotating cleaning brush cylinder 14 to perform flexible scraping and powerful scrubbing on stubborn stains, ensuring that all kinds of pollutants, including dried mud, bird droppings, oil film, etc., are effectively removed.

[0026] The tilting cleaning mechanism 2 sprays air and water to perform the final cleaning of the photovoltaic panel surface. The wastewater generated during cleaning flows downward along the photovoltaic panel surface. The tilting cleaning mechanism 2 adopts a segmented structure, with the structural dimensions of each segment distributed from small to large. The smaller segments at the top are cleaned first, and the wastewater flows to the next segment to be cleaned, forming a stepped progressive cleaning effect. The process involves rinsing the upper sections first, allowing wastewater to flow naturally down the surface of the panel. The wastewater is then purified by the progressively larger cleaning sections below, forming a closed-loop path of cleaning, guiding, and re-cleaning. This, combined with the drying air curtain effect of the end nozzles 22 and the hollowed-out air guides 24, significantly reduces water residue, ensures high light transmittance of the photovoltaic glass, and optimizes water usage efficiency.

[0027] Finally, the wastewater is drawn by the sewage pumping mechanism 7 and transported by the pump 4 to the interior of the cleaning assembly 5, and sprayed onto the cleaning brush surface of the stain cleaning mechanism 1 to clean the stains that adhered to it during the deep cleaning process.

[0028] The wastewater generated during cleaning is collected by the scraper 76 and efficiently sucked in by the sludge suction mechanism 7 through the rubber nozzle 75. It is then transported to the cleaning component 5 by the pump 4 for real-time rinsing and cleaning of the dirt attached to the surface of the brush cylinder 14. This not only avoids secondary pollution of the cleaning brush and extends the life of the components, but also reduces the external water supply demand.

[0029] This embodiment also provides further technical solutions for the secondary cleaning component 62 and the tilting cleaning component 61 in the surface preliminary cleaning mechanism 6.

[0030] The tilting cleaning assembly 61 includes a guide plate 613 and a composite pipe 611 fixedly connected to the output end of the sprayer 3. The bottom of the composite pipe 611 is connected to several conduits 612 that are evenly spaced. One end of the conduit 612 is provided with multiple spray conduits 614. The end of the spray conduit 614 away from the conduit 612 is provided with a 30° inclined cross-section. Several guide plates 613 are provided, which are designed as an approximate trapezoidal structure according to the tilt angle of the photovoltaic panel, and their shapes are distributed from large to small along the airflow direction. The guide plates 613 are fixedly installed at one end of the spray conduit 614 and fixed to one side of the spacer support frame 13. The upper end of the guide plate 613 is provided with a mounting hole 615.

[0031] The secondary cleaning component 62 includes a conduit 621, which is fixedly installed at the bottom of the composite pipe 611 and communicates with its interior. A conical nozzle 622 is provided at the bottom of the conduit 621, and a guide plate 623 for guiding airflow onto the surface of the photovoltaic panel is provided inside the conical nozzle 622.

[0032] It is worth noting that the spray nozzle of the sprayer 3 is used to simultaneously spray water mist and compressed air, and to deliver this mixed medium to the interior of the composite pipe 611. The composite pipe 611, through several conduits 612 connected to its bottom, guides the water mist and airflow to the corresponding spray conduits 614, such as... Figure 26 and Figure 27 As shown, the outlet end of the spray conduit 614 is designed with an inclined section at a 30° angle, and the section angle of the spray conduit 614 is as follows: Figure 27As shown, this allows the direction of the ejected airflow to match the tilt angle of the photovoltaic panel, thereby blowing it down the surface of the photovoltaic panel from top to bottom and effectively pushing the debris downwards. Furthermore, multiple guide plates 613 are provided, arranged sequentially at one end of each spray duct 614 along the airflow blowing direction, and fixedly installed on one side of the spacer support frame 13. The guide plates 613 are designed as an approximately trapezoidal structure according to the tilt angle of the photovoltaic panel, and their size is distributed from large to small along the airflow direction. This arrangement allows the spray duct 614 located at the high position to first blow away the debris on the surface of the photovoltaic panel. The debris blown off moves downward under the combined action of gravity and airflow, and is then cleaned by the next smaller spray duct 614 and the corresponding guide plate 613, thus forming a multi-level relay, top-down stepped progressive cleaning effect. In addition, when the water mist sprayed from the spray duct 614 comes into contact with dust and debris on the surface of the photovoltaic panel, the water mist can quickly wet the dust particles, effectively preventing them from being dispersed under the disturbance of the airflow. At the same time, the airflow continuously blows the wetted sewage or mud-like dirt down along the surface of the photovoltaic panel to avoid secondary deposition.

[0033] On the other hand, some of the water mist and airflow transported by the composite pipe 611 are also diverted into the secondary cleaning component 62. This part of the medium is introduced into the conical nozzle 622 through the guide pipe 621 and accelerated under the action of the constriction structure of the conical nozzle 622. The conical nozzle 622 is provided with a guide plate 623, which is configured to adjust the airflow direction to be basically perpendicular to the photovoltaic panel surface, so that the high-speed airflow can impact the photovoltaic panel surface at an angle of nearly 90°, and perform vertical blowing to clean the residual fine dust or water stains again, thereby significantly improving the overall cleaning effect.

[0034] The sprayer 3 delivers water mist and compressed air to the composite pipe 611 simultaneously, and guides it through the duct 612 to the spray duct 614 with a 30° inclined section. This ensures that the airflow direction is precisely matched to the tilt angle of the photovoltaic panel, achieving directional purging from top to bottom. Combined with the guide plates 613 distributed in a stepped manner from large to small and the multi-segment spray duct 614, a stepped progressive cleaning mechanism is formed, which cleans the high places first and then the lower levels take over, effectively avoiding the accumulation or backflow of debris. The water mist wets the dust upon contact, significantly suppressing dust dispersion during the cleaning process and improving environmental friendliness. At the same time, the airflow continuously pushes the mud-like dirt downwards to prevent secondary deposition. In addition, some of the gas-liquid mixture is diverted to the secondary cleaning component 62, enters the conical nozzle 622 through the guide tube 621, and forms a high-speed airflow perpendicular to the photovoltaic panel surface under the action of the guide plate 623, which precisely and vertically blows away residual dust and water stains.

[0035] This embodiment also provides a further technical solution for the stain cleaning mechanism 1.

[0036] The stain cleaning mechanism 1 includes two drive mechanisms 11 and multiple spaced support frames 13. The two drive mechanisms 11 are fixed at both ends of the support frame 8, and the multiple spaced support frames 13 are fixedly installed on one side of the support frame 8. The bottom of each of the two drive mechanisms 11 is provided with a chuck 17 that abuts against both ends of the photovoltaic panel and is used to drive the drive mechanism 11 to move along the photovoltaic panel. Each of the two drive mechanisms 11 is provided with a drive device, and a cleaning brush cylinder 14 and a shaft 15 are provided between the two drive devices. The outer surface of the shaft 15 is provided with a spiral blade 16 for cleaning stains on the surface of the photovoltaic panel. The spiral blade 16 is made of rubber.

[0037] It is worth noting that the cassette 17 abuts against the edge or frame of the photovoltaic panel and drives the drive mechanism 11 to move smoothly along the surface of the photovoltaic panel through external power or built-in drive source. During the movement, the drive device inside the drive mechanism 11 is activated. The built-in drive source or drive device is a servo motor or DC motor, which are existing technologies and have an output speed of 3000 rpm to achieve power transmission. The drive shaft 15 rotates around its axis, thereby driving the spiral plate 16 fixed on the outer surface of the shaft 15 to rotate synchronously.

[0038] Since the spiral blade 16 is made of rubber, it has good elasticity and flexibility. Under its own weight and the pressure of the mechanism, it can closely adhere to and moderately squeeze onto the surface of the photovoltaic panel. After the surface cleaning mechanism 6 has completed the pre-cleaning operation, the surface of the photovoltaic panel has been wetted by water mist and covered with a lot of water stains. At this time, the rotating spiral blade 16 can fully mix the water stains and residual debris, and through its spiral propulsion action, push the dirty liquid along the surface of the photovoltaic panel to one side or downward, so as to effectively scrape and guide the surface dust, mud and loose pollutants. Furthermore, after the spiral blades 16 complete the initial scraping, the drive unit inside the drive mechanism 11 continues to operate, driving the cleaning brush cylinder 14 to rotate around its axis. The cleaning brush cylinder 14 has a cylindrical structure and is composed of multiple cleaning brushes arranged in a dense combination. Its bristles can be made of nylon, polyester, or other wear-resistant flexible materials. As the cleaning brush cylinder 14 rotates at high speed, the cleaning brushes on its surface continuously rub the photovoltaic panel surface, performing deep mechanical scrubbing on stubborn stains such as firmly attached bird droppings, oil stains, and dried dust, thereby significantly improving the overall cleaning effect.

[0039] In this process, the drive mechanism 11 can move smoothly along the surface of the photovoltaic panel by engaging with the edge or frame of the photovoltaic panel through the contact wheel 17. During this process, the shaft 15 drives the rubber spiral blade 16 to rotate. With its excellent elasticity and flexibility, the spiral blade 16 can closely adhere to the surface of the photovoltaic glass. In the water stain environment formed after pre-cleaning, it can fully mix loose pollutants such as dust and mud with water, and use the spiral propulsion action to push the dirty liquid to one side or below the panel, achieving efficient scraping and drainage, and avoiding the accumulation of dirt. Subsequently, the cleaning brush cylinder 14 rotates at high speed under the drive of the drive device. Its cylindrical structure, composed of multiple wear-resistant flexible cleaning brushes, performs deep mechanical cleaning of stubborn stains such as bird droppings, oil stains, and dried dust. The two-stage collaborative cleaning mechanism of first wiping with soft brushing and then scrubbing with strong brushing not only effectively removes various pollutants, but also avoids scratching the photovoltaic glass and anti-reflective coating because the spiral blade 16 is made of rubber.

[0040] This embodiment also provides further technical solutions for the cleaning component 5 and the sludge extraction mechanism 7.

[0041] The sludge suction mechanism 7 includes an adsorption pipe 71 fixedly connected to the water inlet end of the pump 4. The bottom of the adsorption pipe 71 is provided with several tapered pipes 72, and the bottom of each tapered pipe 72 is provided with an air extraction port 73 fixedly installed inside the support frame 8.

[0042] A baffle 74 is provided at the bottom of the air extraction port 73. A scraper 76 for scraping the outer surface of the photovoltaic panel is provided on one side of the bottom of the baffle 74. A rubber nozzle 75 is provided at the lower end of the baffle 74.

[0043] It is worth noting that while the stain cleaning mechanism 1 moves along the surface of the photovoltaic panel and performs deep cleaning of stubborn stains, the tilting cleaning mechanism 2 simultaneously performs the final cleaning operation to clean the surface of the photovoltaic panel. The wastewater generated after being rinsed by the water mist or water flow sprayed by the tilting cleaning mechanism 2 flows down along the surface of the photovoltaic panel and is collected in the area where the air extraction pipe 73 is located. At this time, the scraper 76, located at the bottom of the suction pipe 73, is in close contact with the surface of the photovoltaic panel and moves with the whole device. It further scrapes and gathers the residual water film and small particles, so that the sewage flows more concentratedly to the suction area. At the same time, the pump 4 starts and performs negative pressure suction through the adsorption pipe 71 to the conical pipe 72 and the inside of the suction pipe 73. Under the action of negative pressure, the rubber nozzle 75 located below the suction pipe 73 generates a local wind pressure difference, which tightly adheres to the surface of the photovoltaic panel and efficiently extracts the sewage on it.

[0044] The extracted wastewater enters the suction pipe 73 through the rubber nozzle 75, then flows sequentially through the conical pipe 72 and the adsorption pipe 71, and is finally transported to the liquid inlet of the pump 4. The pump 4 is a conventional liquid conveying device in the art, and its specific structure is prior art, so it will not be described in detail here. After the pump 4 pressurizes the recovered wastewater, a portion can be transported to the cleaning assembly 5 for self-cleaning internal brushes.

[0045] The cleaning assembly 5 includes a connecting pipe 53, one end of which is fixedly connected to the discharge end of the pump 4. The bottom of the connecting pipe 53 is provided with several connector pipes 52 distributed at equal intervals. One end of each connector pipe 52 is provided with a protective plate 51. The protective plate 51 is fixedly installed on one side of the spacer support frame 13 and is located above the cleaning brush cylinder 14. It is used to spray the sewage drawn by the pump 4 onto the surface of the cleaning brush cylinder 14 to clean the stains attached thereon.

[0046] In this process, after pump 4 extracts the sewage transported by adsorption pipe 71, it pressurizes the sewage and sends it into the connecting pipe 53 in the cleaning assembly 5. The sewage flows in the connecting pipe 53 and is diverted and guided by several connector pipes 52 set at its bottom. Finally, it is sprayed from the outlet end of the connector pipe 52 onto the outer surface of the cleaning brush cylinder 14. Since the cleaning brush cylinder 14 rotates at high speed continuously during operation to scrub the surface of the photovoltaic panel, its surface is prone to adhering to stubborn residues such as mud and oil. By spraying the recycled wastewater onto the surface of the cleaning brush cylinder 14 in a directional manner, the dirt trapped between its bristles can be effectively washed away and removed. In addition, a protective plate 51 is provided at the outlet end of the connector pipe 52. The protective plate 51 is fixedly installed on one side of the spacer support frame 13 and located above the cleaning brush cylinder 14. The protective plate 51 is used to block the splashing of sewage that may be generated due to the high-speed rotation of the cleaning brush cylinder 14, and to prevent sewage from overflowing to other parts of the device or the uncleaned area of ​​the photovoltaic panel.

[0047] While the stain cleaning mechanism 1 performs deep cleaning on the surface of the photovoltaic panel, the tilting cleaning mechanism 2 simultaneously performs final rinsing. The resulting wastewater flows naturally down the panel surface and collects in the area of ​​the air extraction pipe 73. The scraper 76 moves close to the panel surface to scrape and gather the residual water film and particles. In conjunction with the rubber nozzle 75, it tightly adheres to the surface of the photovoltaic panel under negative pressure. The wastewater is efficiently recovered through the adsorption pipe 71 and the conical pipe 72, improving the wastewater extraction rate and reducing water stain residue. The recycled wastewater is pressurized by pump 4 and transported to cleaning component 5. It is then sprayed directionally onto the surface of high-speed rotating cleaning brush cylinder 14 through connecting pipe 53 and connector pipe 52. This process provides real-time self-cleaning of stubborn residues such as mud and oil trapped between the brush bristles, preventing cross-contamination and maintaining long-term cleaning efficiency.

[0048] This embodiment also provides a further technical solution for the tilting cleaning mechanism 2.

[0049] The tilting cleaning mechanism 2 includes a central tube 21, one end of which is fixedly connected to the output end of the sprayer 3. Several hollow tubes 23 and nozzles 22 are connected to the bottom of the outer surface of the central tube 21. Several hollow tubes 23 are fixedly installed on one side of the support frame 8. Hollow air guides 24 are installed at the bottom of several hollow tubes 23. The hollow air guides 24 are designed as an approximate trapezoidal structure according to the tilt angle of the photovoltaic panel, and their shapes are distributed from small to large along the water flow direction, which is used to perform progressive cleaning on the surface of the photovoltaic panel.

[0050] The inner wall of the hollow air guide 24 is provided with a water pipe 25, and the bottom of the water pipe 25 is provided with several water spray nozzles 26. The angle between the water spray nozzles 26 and the surface of the photovoltaic panel is 15°~45°, and the nozzles 22 are located between every two hollow air guides 24.

[0051] It is worth noting that the sprayer 3 delivers water mist and compressed air together to the central tube 21 of the inclined cleaning mechanism 2. The airflow enters through the central tube 21 and connects with several hollow tubes 23. Then, guided by the hollow tubes 23, it is discharged from the hollow structure of the hollow air guide 24, forming a directional airflow that covers the surface of the photovoltaic panel.

[0052] Meanwhile, a water pipe 25 is provided on the inner wall of the hollow air guide 24. The water pipe 25 is connected to the external water supply pipeline and continuously supplies water to multiple water nozzles 26 set at its bottom. The spray direction of the water nozzles 26 is optimized according to the installation tilt angle of the photovoltaic panel and forms an angle of 15° to 45° with the surface of the photovoltaic panel, so that the water flow can be sprayed onto the surface of the photovoltaic panel at the best impact angle, thereby efficiently removing residual stains and avoiding water splashing or coating damage caused by vertical impact. After the water jet from the nozzle 26 has finished cleaning, it flows downward along the surface of the photovoltaic panel and is guided to the upper area of ​​the scraper 76. The scraper 76 is in close contact with the surface of the photovoltaic panel to gather and guide the water and dirt, so that the sewage flows to the suction area. Then, under the negative pressure generated by the pump 4, the sewage is effectively sucked in through the rubber nozzle 75 and enters the sewage suction mechanism 7 through the air suction port 73, and is finally recycled or discharged. In addition, the nozzles 22, which are located between every two hollow air guides 24, work together with the hollow air guides 24 to blow away and remove the last remaining water stains on the surface of the photovoltaic panel. The airflow is ejected at high speed through the nozzles 22, and the airflow structure of the hollow air guides 24 reduces water stains.

[0053] Among them, the sprayer 3 delivers water mist and compressed air to the central pipe 21 simultaneously. The airflow is guided by the hollow pipe 23 and discharged from the hollow structure of the hollow air guide 24, forming a directional airflow covering the surface of the photovoltaic panel. At the same time, the water pipe 25 continuously supplies water to the spray nozzle 26. Its spray direction is optimized to an angle of 15° to 45° according to the tilt angle of the photovoltaic panel, so that the water flow can efficiently remove stains at the best impact angle, which avoids water splashing or damage to the anti-reflective coating caused by vertical impact, and improves cleaning efficiency. The wastewater after cleaning flows naturally down the plate surface and is gathered and guided to the suction area by the scraper 76. Under the negative pressure of the pump 4, it is efficiently sucked in through the rubber nozzle 75 and enters the sewage suction mechanism 7 through the air extraction port 73 for recycling or discharge.

[0054] This embodiment also provides a method for cleaning a photovoltaic glass panel, using the aforementioned photovoltaic glass panel cleaning device, and the specific cleaning method is as follows: S1. Start the sprayer 3 and spray water mist into the surface preliminary cleaning mechanism 6 and the tilting cleaning mechanism 2 at the same time. The tilting cleaning component 61 guides the airflow to blow onto the photovoltaic panel surface. Since the tilting cleaning component 61 adopts a multi-segment combination distribution and the structural size of each segment is arranged from large to small along the tilting direction of the photovoltaic panel, the largest segment at the top first blows away the debris on the photovoltaic panel surface, and then the next segment takes over to clean the debris blown down from the top. Because the tilting cleaning component 61 is designed according to the tilting angle of the photovoltaic panel, the debris being cleaned flows smoothly downwards under the combined action of gravity and airflow, achieving progressive cleaning. S2. After the initial cleaning by the tilting cleaning component 61, the secondary cleaning component 62 cleans the surface of the photovoltaic panel again, while the stain cleaning mechanism 1 moves along the surface of the photovoltaic panel and uses its internal cleaning brush to deeply clean the stubborn stains on the surface of the photovoltaic panel. S3. The inclined cleaning mechanism 2 sprays air and water to perform final cleaning on the surface of the photovoltaic panel. The wastewater generated during cleaning flows downward along the surface of the photovoltaic panel. The inclined cleaning mechanism 2 adopts a segmented structure with the structural size of each segment distributed from small to large. The smaller segments at the top are cleaned first, and the wastewater flows to the next segment to be cleaned, forming a stepped progressive cleaning effect. Finally, the wastewater is drawn by the sewage pumping mechanism 7 and transported by the pump 4 to the interior of the cleaning assembly 5, and sprayed onto the cleaning brush surface of the stain cleaning mechanism 1 to clean the stains that adhered to it during the deep cleaning process.

[0055] Finally, it should be noted that the above 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 cleaning device for photovoltaic glass panels, characterized in that: The system includes a stain cleaning mechanism (1), which has a support frame (8) inside. A pump (4) is installed on one side of the upper end of the stain cleaning mechanism (1). A sprayer (3) is installed at one end of the stain cleaning mechanism (1). A surface preliminary cleaning mechanism (6) connected to the sprayer (3) is installed on one side of the stain cleaning mechanism (1) for preliminary cleaning of the photovoltaic panel surface. An inclined cleaning mechanism (2) connected to the sprayer (3) is installed on the other side of the stain cleaning mechanism (1) for final cleaning of the photovoltaic panel surface. The support frame (8) is equipped with a sludge suction mechanism (7), which is used to extract the sewage collected after being cleaned by the inclined cleaning mechanism (2) by a pump (4); The upper end of the stain cleaning mechanism (1) is provided with a cleaning component (5) that communicates with the pump (4) and is used to spray sewage to clean the stains on the surface of the cleaning brush inside the stain cleaning mechanism (1). The pump (4) is used to extract sewage from the sewage extraction mechanism (7) and spray the extracted sewage into the interior of the cleaning component (5). The surface preliminary cleaning mechanism (6) includes an inclined cleaning component (61) and a secondary cleaning component (62). The inclined cleaning component (61) is used to guide airflow in a progressive manner to sweep and preliminarily clean the dust on the surface of the photovoltaic panel according to the tilt angle of the photovoltaic panel. The secondary cleaning component (62) is disposed on the inclined cleaning component (61).

2. The cleaning device for a photovoltaic glass panel according to claim 1, characterized in that: The stain cleaning mechanism (1) includes two drive mechanisms (11) and multiple spaced support frames (13). The two drive mechanisms (11) are fixed at both ends of the support frame (8), and the multiple spaced support frames (13) are fixedly installed on one side of the support frame (8). The bottom of the two drive mechanisms (11) is provided with chucks (17) that abut against both ends of the photovoltaic panel and are used to drive the drive mechanism (11) to move along the photovoltaic panel. The two drive mechanisms (11) are provided with drive devices inside, and a cleaning brush cylinder (14) and a shaft (15) are provided between the two drive devices. The outer surface of the shaft (15) is provided with a spiral blade (16) for cleaning stains on the surface of the photovoltaic panel. The spiral blade (16) is made of rubber.

3. The cleaning device for a photovoltaic glass panel according to claim 1, characterized in that: The cleaning assembly (5) includes a connecting pipe (53), one end of which is fixedly connected to the discharge end of the pump (4). The bottom of the connecting pipe (53) is provided with several connector pipes (52) distributed at equal intervals. One end of the connector pipe (52) is provided with a protective plate (51). The protective plate (51) is fixedly installed on one side of the spacer support frame (13) and is located above the cleaning brush cylinder (14). It is used to spray the sewage drawn by the pump (4) onto the surface of the cleaning brush cylinder (14) to clean the stains attached thereon.

4. The cleaning device for a photovoltaic glass panel according to claim 1, characterized in that: The sludge suction mechanism (7) includes an adsorption pipe (71) fixedly connected to the water inlet of the pump (4). The bottom of the adsorption pipe (71) is provided with several conical pipes (72), and the bottom of each of the several conical pipes (72) is provided with an air extraction port (73) fixedly installed inside the support frame (8).

5. The cleaning device for a photovoltaic glass panel according to claim 4, characterized in that: The bottom of the air extraction port (73) is provided with a partition (74), and a scraper (76) for scraping the outer surface of the photovoltaic panel is provided on one side of the bottom of the partition (74). A rubber nozzle (75) is provided at the lower end of the partition (74).

6. The cleaning device for a photovoltaic glass panel according to claim 1, characterized in that: The tilting cleaning mechanism (2) includes a central tube (21), one end of which is fixedly connected to the output end of the sprayer (3). Several hollow tubes (23) and nozzles (22) are connected to the bottom of the outer surface of the central tube (21). Several hollow tubes (23) are fixedly installed on one side of the support frame (8). Hollow air guides (24) are installed at the bottom of several hollow tubes (23).

7. The cleaning device for a photovoltaic glass panel according to claim 6, characterized in that: The inner wall of the hollow air guide (24) is provided with a water pipe (25), and the bottom of the water pipe (25) is provided with several water nozzles (26). The angle between the water nozzles (26) and the surface of the photovoltaic panel is 15°~45°, and the nozzles (22) are located between each two adjacent hollow air guides (24).

8. A cleaning device for a photovoltaic glass panel according to claim 2, characterized in that: The tilting cleaning assembly (61) includes a guide plate (613) and a composite pipe (611) fixedly connected to the output end of the sprayer (3). The bottom of the composite pipe (611) is connected to a number of equally spaced conduits (612). One end of the conduit (612) is provided with a spray conduit (614). One end of the spray conduit (614) is provided with a 30° inclined cross-section. A number of guide plates (613) are provided. The guide plates (613) are fixedly installed at one end of the spray conduit (614) and fixed to one side of the spacer support frame (13). The upper end of the guide plate (613) is provided with a mounting hole (615).

9. A cleaning device for a photovoltaic glass panel according to claim 8, characterized in that: The secondary cleaning component (62) includes a conduit (621), which is fixedly installed at the bottom of the composite tube (611) and communicates with the inside of the tube. A conical nozzle (622) is provided at the bottom of the conduit (621), and a guide plate (623) is provided inside the conical nozzle (622) to guide the airflow to blow onto the surface of the photovoltaic panel.

10. A method for cleaning a photovoltaic glass panel, characterized in that, The photovoltaic glass panel cleaning device according to any one of claims 1-9 is used, and the specific cleaning method is as follows: S1. Start the sprayer (3) and spray water mist into the surface preliminary cleaning mechanism (6) and the tilt cleaning mechanism (2) at the same time. The tilt cleaning component (61) guides the airflow to blow onto the photovoltaic panel surface to achieve progressive cleaning. S2. After the initial cleaning by the tilt cleaning component (61), the secondary cleaning component (62) cleans the photovoltaic panel surface again, while the stain cleaning mechanism (1) moves along the photovoltaic panel surface and uses its internal cleaning brush to deeply clean the stubborn stains on the photovoltaic panel surface. S3, Inclined cleaning mechanism (2) sprays air and water to perform final cleaning on the surface of photovoltaic panel. The wastewater generated during cleaning flows downward along the surface of photovoltaic panel, forming a step-by-step cleaning effect. Finally, the sewage is drawn by the sewage pumping mechanism (7) and transported to the interior of the cleaning assembly (5) by the pump (4), and sprayed onto the cleaning brush surface of the stain cleaning mechanism (1) to clean the stains that adhered to it during the deep cleaning process.

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