A self-cleaning device applied to the surface of photovoltaic modules

Abstract

The present invention relates to the field of photovoltaic panel cleaning technology, specifically a self-cleaning device applied to the surface of a photovoltaic module, comprising a horizontal plate, two groups of clamping assemblies are installed at the bottom of the horizontal plate, and a water tank detachably fixed to the bottom of the horizontal plate by the two groups of clamping assemblies, the water tank is provided with a water inlet, a receiving groove is provided at the bottom of the water tank, a slow-flow flushing assembly slidably connected to the water tank is provided in the receiving groove; the slow-flow flushing assembly comprises a slide plate slidably connected to the water tank, a flushing box is installed at the bottom of the slide plate, a plurality of flushing pipes are connected to one side of the flushing box, and a slow-flow plate is fixedly connected to the bottom of the slide plate. The present invention solves the problem that the existing photovoltaic cleaning equipment consumes a large amount of water for flushing photovoltaic panels, it is difficult to slow down the speed of water flowing along the photovoltaic panels, and prolong the time that the water flows in contact with the photovoltaic panels, thereby using less water to complete the cleaning process and reducing the time for replenishing water during cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic panel cleaning, in particular to a self-cleaning device applied to the surface of a photovoltaic module. Background Art

[0002] During long-term use, photovoltaic panels will accumulate a lot of stains and dust, affecting their ability to absorb light. In order to ensure the power generation efficiency of photovoltaic panels, the surface of the photovoltaic panels needs to be cleaned regularly. After searching, the Chinese invention patent with application number CN202410388652.0 discloses a cleaning device for cleaning pollutants from photovoltaic devices. It uses a telescopic spray gun mechanism to spray liquid and gas to clean the entire row of photovoltaic panels; it solves the problem of easily scratching the surface of photovoltaic panels during cleaning.

[0003] The above-mentioned device uses the sprayed water flow to clean the dust or debris on the surface of the photovoltaic panel. In order to improve the flushing effect, the stains on the surface of the photovoltaic panel are first dissolved with a detergent before flushing. However, the flushing water flow speed is fast, which will result in a large water consumption. The water storage capacity of the cleaning equipment is limited. An excessively fast water spray speed requires frequent water replenishment in the cleaning equipment. Generally, the cleaning equipment will clean a row of photovoltaic panels at a time. Since the cleaning equipment moves a long distance along the photovoltaic panel, it is difficult to achieve the purpose of using a pipe to connect the cleaning equipment and continuously supply water to the inside. After the water inside the cleaning equipment is used up, the cleaning can only be interrupted. The cleaning equipment returns to the starting point to replenish water and then cleans again. The water replenishment process takes a long time, and the water consumption of the cleaning process is also large. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a self-cleaning device applied to the surface of photovoltaic modules, which solves the problem that the existing photovoltaic cleaning equipment consumes a large amount of water to rinse the photovoltaic panels, making it difficult to slow down the speed of water flowing along the photovoltaic panels and extend the time that the water contacts the photovoltaic panels, thereby using less water to complete the cleaning process and reducing the time wasted on replenishing water during cleaning.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a self-cleaning device for use on the surface of a photovoltaic module, comprising a horizontal plate, two sets of clamping assemblies mounted on the bottom of the horizontal plate, and a water tank detachably fixed to the bottom of the horizontal plate by the two sets of clamping assemblies, the water tank being provided with a water inlet, a receiving groove being provided at the bottom of the water tank, and a slow-flow flushing assembly being slidably connected to the water tank being provided in the receiving groove;

[0006] The slow-flow flushing assembly includes a slide plate slidably connected to the water storage tank, a flushing box is installed at the bottom of the slide plate, one side of the flushing box is connected to a plurality of flushing pipes, the bottom of the slide plate is fixedly connected to a slow-flow plate for slowing down the flow speed of the flushing water along the surface of the photovoltaic panel, a cleaning brush is fixedly connected to the side of the slow-flow plate away from the flushing box, and a debris removal and anti-scratch assembly for absorbing granular impurities on the surface of the photovoltaic panel is installed on the slow-flow plate;

[0007] The slow flow plate includes two inclined plates fixed at the bottom of the slide plate, and a water storage plate located between the two inclined plates and integrally formed. A plurality of water leakage holes are provided on the side of the inclined plate away from the slide plate. The water storage plate includes a water storage end connected to the opposite end of the two inclined plates. During cleaning, the flushing pipe acts on the water storage end and stores water therein until it is full, and then flows along the inclined plate. An arc-shaped protrusion is provided between the two water storage ends to allow water to flow to both sides thereof and converge in the water storage ends.

[0008] Preferably, a driving groove is provided at the bottom of the water tank, a driving wheel movably extending to the outside of the driving groove is provided on one side of the inner wall of the driving groove, and a transverse driving motor for driving the driving wheel to rotate is fixedly connected to one side of the inner wall of the driving groove.

[0009] Preferably, a track groove is provided at the bottom of the water tank, a slider with one end movably extending into the track groove is provided on the top of the skateboard, a threaded rod movably passing through the slider is provided between the two sides of the inner wall of the track groove, and a longitudinal drive motor for driving the threaded rod to rotate is fixedly connected to one side of the water tank.

[0010] Preferably, the impurity removal and anti-scratch component includes a horizontal block fixedly connected to the slow flow plate, a semicircular groove is provided at the bottom of the horizontal block, and an inner wall of the semicircular groove is provided with an arc-shaped plate with both ends movably extending to the outside of the semicircular groove, and both ends of the arc-shaped plate are fixedly connected to an outward expansion plate, and a horizontal tube with closed ends is rotatably connected between the two sides of the slow flow plate, and the outer side of the horizontal tube is provided with an annular cloth block that slides with the arc plate, and a plurality of air vents connected to the horizontal tube are provided on the outer side of the annular cloth block, and an arc-shaped channel is provided on the top of the arc plate, and the central angle of the arc-shaped channel is greater than the central angle of the two adjacent air vents, and an exhaust component is installed on the top of the horizontal block.

[0011] Preferably, the vacuum assembly includes a longitudinal tube connected to the arc-shaped channel, the top of the longitudinal tube is connected to the arc-shaped tube, one end of the arc-shaped tube away from the longitudinal tube is closed, and a micro air pump for extracting the air inside the arc-shaped tube is installed on the top of the arc-shaped tube.

[0012] Preferably, the top of the slide is fixedly connected to a longitudinal plate, and one side of the longitudinal plate is provided with a bent tube with one end passing through the longitudinal plate, one end of the bent tube is connected to a hose 1, one end of the hose 1 extends to the inside of the flushing box, the flushing box is rotatably connected to the slide, a water distribution pipe is fixedly connected between the two sides of the inner wall of the flushing box, a plurality of leakage holes are provided on the side of the water distribution pipe close to the flushing pipe, the hose 1 is connected to the water distribution pipe, the end of the bent tube away from the hose 1 is connected to the hose 2, one end of the hose 2 is movably extended to the inside of the water tank, and a solenoid valve is installed on the end of the bent tube close to the slide.

[0013] Preferably, the clamping assembly includes a limit frame fixedly connected to the bottom of the horizontal plate, a longitudinal block is rotatably connected between the two sides of the inner wall of the limit frame, a bracket is fixedly connected to the bottom of the longitudinal block, a support rod is rotatably connected between the two sides of the bracket, an extrusion plate is fixedly connected to one end of the support rod close to the water tank, and a driving extrusion assembly is installed at the bottom of the horizontal plate to push the support rod along the width direction of the water tank.

[0014] Preferably, the driving extrusion assembly includes a transverse frame installed at the bottom of the transverse plate, a threaded rod 2 is rotatably connected between the two sides of the transverse frame, a clamping motor for driving the threaded rod 2 to rotate is fixedly connected to one side of the transverse frame, a connecting rod is rotatably connected between the two support rods, a rotating block passing through the connecting rod is provided in the middle of the connecting rod, the connecting rod movably extends to the inside of the rotating block, a bending block is provided on the outer sleeve of the threaded rod 2, a limiting rod with one end movably passing through the rotating block is provided at the bottom of the bending block, and a stop block is fixedly connected to the bottom of the limiting rod.

[0015] Preferably, arc-shaped grooves corresponding to the support rods are provided on both sides of the water tank, and limiting grooves adapted to the support rods are provided on the inner top of the arc-shaped grooves.

[0016] Preferably, a plurality of protrusions with perforations are fixedly connected to the top of the horizontal plate, a cable passing through the protrusion is provided on one side of the protrusion, a plurality of limiting balls are fixedly connected to the outside of the cable near the protrusion, longitudinal rods are installed at both ends of the cable, and a pad is fixedly connected to the bottom of the longitudinal rod.

[0017] Compared with the prior art, the present invention provides a self-cleaning device applied to the surface of a photovoltaic module, which has the following beneficial effects:

[0018] 1. By setting up a slow-flow flushing component, part of the water flow is blocked to slow down the speed of water flowing along the photovoltaic panel, and the contact time of water flow with the surface of the photovoltaic panel is increased, so that the impurities on the surface of the photovoltaic panel can be better cleaned after being more fully infiltrated, reducing the water consumption of the cleaning equipment for flushing the photovoltaic panel, slowing down the speed of water flow along the photovoltaic panel, and prolonging the time that water flow contacts the photovoltaic panel, thereby using less water to complete the cleaning process and reducing the time wasted on replenishing water during cleaning.

[0019] 2. The slow-flow plate can slow down the speed of water flowing along the photovoltaic panel, and at the same time, the dust on the uncleaned photovoltaic panel can be soaked in advance, and the cleaned photovoltaic panel can be rinsed again. After the cleaning is completed, the water in the water storage end of the water storage plate will be used to rinse the photovoltaic panel again. This not only increases the degree of dust soaking on the surface of the photovoltaic panel, but also reduces the difficulty of cleaning the photovoltaic panel, thereby reducing the water consumption for cleaning the photovoltaic panel. After the photovoltaic panel is cleaned, it can be cleaned again to ensure the cleaning effect of the photovoltaic panel surface.

[0020] 3. The impurity removal and anti-scratch component can utilize the negative pressure and the adsorption force between the annular cloth and the granular impurities to separate the granular impurities from the photovoltaic panel, preventing the cleaning brush from driving the granular impurities to slide along the surface of the photovoltaic panel and scratch the photovoltaic panel.

[0021] 4. Through the set exhaust assembly, the granular impurities on the surface of the photovoltaic panel can be guided to move to the designated position to prevent the granular impurities from blocking the exhaust channel. It is also convenient for centralized cleaning of the granular impurities on the surface of the photovoltaic panel.

[0022] 5. Through the provided flushing box and flushing pipe, there is always water in the flushing box whose liquid level is lower than that in the flushing pipe. When the water storage tank moves along the length direction of a long row of photovoltaic panels, the flushing box will generate a small swing during the movement, so that part of the water retained in the flushing box will be discharged from the flushing pipe until the solenoid valve replenishes the water in the water storage tank to the inside of the flushing box. Before the flushing equipment moves to the photovoltaic panel cleaning position, a small amount of water can be sprayed on the photovoltaic panel to pre-infiltrate the dust and impurities on the surface of the photovoltaic panel that needs to be cleaned, reducing the waiting time for spraying water after the cleaning equipment moves to the cleaning position of the photovoltaic panel, so that the dust and impurities on the photovoltaic panel can be cleaned faster after being soaked.

[0023] 6. The clamping assembly can not only fix the water tank, but also drive the water tank to rise and separate from the photovoltaic panel, and adjust the position of the water tank at the same time. The water tank can be fixed by simply moving it to the approximate position. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0026] Figure 2 It is a structural schematic diagram of the water storage tank of the present invention;

[0027] Figure 3 This is a schematic structural diagram of the slow-flow flushing assembly of the present invention;

[0028] Figure 4 This is a schematic structural diagram of the bottom component of the skateboard of the present invention;

[0029] Figure 5 This is a schematic structural diagram of the slow flow plate and the impurity removal and anti-scratch assembly of the present invention;

[0030] Figure 6 This is an internal cross-sectional view of the impurity removal and anti-scratch assembly of the present invention;

[0031] Figure 7 A partial cutaway view of the flushing tank of the present invention;

[0032] Figure 8 It is a structural schematic diagram of the horizontal plate and the clamping assembly of the present invention;

[0033] Figure 9 It is a schematic structural diagram of a water storage tank and one set of clamping assemblies of the present invention;

[0034] Figure 10 This is a schematic structural diagram of one set of clamping assemblies of the present invention;

[0035] Figure 11 This is a schematic diagram of the structure of the overall installation cable of the present invention.

[0036] In the figure: 1, horizontal plate; 2, clamping assembly; 21, limit frame; 22, longitudinal block; 23, bracket; 24, support rod; 25, extrusion plate; 26, drive extrusion assembly; 261, horizontal frame; 262, threaded rod 2; 263, clamping motor; 264, rotating block; 265, bending block; 266, limit rod; 3, water storage tank; 4, slow flow flushing assembly; 41, slide plate; 42, flushing tank; 43, flushing pipe; 44, slow flow plate; 441, water storage plate; 4411, arc-shaped protrusion; 4412, water storage end; 442, inclined plate; 4 5. Debris removal and anti-scratch assembly; 451. Horizontal block; 452. Curved plate; 453. Outward expansion plate; 454. Horizontal tube; 455. Ring-shaped cloth block; 456. Exhaust assembly; 4561. Longitudinal tube; 4562. Curved tube; 4563. Micro air pump; 5. Driving wheel; 6. Horizontal drive motor; 7. Slider; 8. Threaded rod 1; 9. Longitudinal drive motor; 10. Longitudinal plate; 11. Bent tube; 12. Hose 1; 13. Hose 2; 14. Solenoid valve; 15. Bump; 16. Cable; 17. Longitudinal rod; 18. Pad; 19. Water distribution pipe. DETAILED DESCRIPTION

[0037] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0038] Example 1

[0039] Photovoltaic panels are generally installed in a spacious outdoor area. A long row is installed continuously along the width of the site, and then multiple rows of photovoltaic panels are installed along the length of the site. Therefore, when cleaning photovoltaic panels, you can clean one row of photovoltaic panels installed in a long row at a time, and then move the cleaning equipment to the next row of photovoltaic panels. Repeat the process of moving the cleaning equipment and cleaning along a long row of photovoltaic panels. Since the cleaning equipment needs to move a long distance along the photovoltaic panels, it is inconvenient to add water during the cleaning process. If the water is used too quickly during the cleaning process, resulting in the water inside the cleaning equipment running out, the cleaning process needs to be interrupted and the cleaning equipment needs to be moved to the starting point to add water before continuing to clean. This water replenishment process is time-consuming. In order to reduce the time for replenishing water and reduce the water consumption for cleaning photovoltaic panels, refer to Figures 1-6 As an embodiment of the present invention, a self-cleaning device applied to the surface of a photovoltaic module is proposed, which slows down the speed of flushing water flowing along the surface of the photovoltaic panel so that the flushing water can fully infiltrate the dust and impurities on the surface of the photovoltaic panel, thereby facilitating and better removing the dust and impurities on the surface of the photovoltaic panel and reducing the water consumption during the cleaning process. The device includes a horizontal board 1, two groups of clamping components 2 are installed at the bottom of the horizontal board 1, and a water tank 3 that is detachably fixed to the bottom of the horizontal board 1 by the two groups of clamping components 2, a water inlet is provided on the water tank 3, and a receiving groove is provided at the bottom of the water tank 3, and a slow-flow flushing component 4 slidably connected to the water tank 3 is provided in the receiving groove.

[0040] During use, the staff moves the horizontal board 1 to one end of a row of photovoltaic panels, connects the water pipe to the top of the horizontal board 1 to add water to the water tank 3, and when starting to clean the photovoltaic panels, stops adding water to the water tank 3, and the clamping component 2 releases the water tank 3. The receiving groove of the water tank 3 is put on the photovoltaic panel to prevent the water tank 3 from sliding off the tilted photovoltaic panel. Then the water tank 3 moves along a long row of photovoltaic panels. During the movement, the slow-flow flushing component 4 flushes the surface of the photovoltaic panel and slows down the speed of water flowing along the photovoltaic panel by blocking part of the water flow, thereby increasing the contact time of water flow with the surface of the photovoltaic panel, so that impurities on the surface of the photovoltaic panel are more fully soaked and can be better cleaned, reducing the water consumption of the cleaning equipment for flushing the photovoltaic panel, slowing down the speed of water flow along the photovoltaic panel, and prolonging the time that water flow contacts the photovoltaic panel, thereby using less water to complete the cleaning process and reducing the time for replenishing water during cleaning.

[0041] In order to slow down the speed of flushing water moving along the photovoltaic panel and increase the degree to which water infiltrates dust and impurities on the surface of the photovoltaic panel, thereby using less water to achieve the cleaning process of the photovoltaic panel, this embodiment provides a slow-flow flushing component 4, which includes a slide plate 41 slidably connected to the water storage tank 3, a flushing box 42 is installed at the bottom of the slide plate 41, and a plurality of flushing pipes 43 are connected to one side of the flushing box 42. A slow-flow plate 44 is fixedly connected to the bottom of the slide plate 41 to slow down the flow speed of flushing water along the surface of the photovoltaic panel, and a cleaning brush is fixedly connected to the side of the slow-flow plate 44 away from the flushing box 42. A de-impurity and anti-scratch component 45 for absorbing granular impurities on the surface of the photovoltaic panel is installed on the slow-flow plate 44. The slow-flow plate 44 includes two inclined plates 442 fixed at the bottom of the slide plate 41, and a plurality of flushing pipes 43 are connected to one side of the slide plate 41. The water storage plate 441 is formed in an integral manner between the two sides, and a plurality of water leakage holes are provided on the side of the inclined plate 442 away from the slide plate 41. The water storage plate 441 includes a water storage end 4412 connected to the opposite end of the two inclined plates 442. When cleaning, the flushing pipe 43 acts on the water storage end 4412 and stores water therein until it is full and then flows along the inclined plate 442. An arc-shaped protrusion 4411 is provided between the two water storage ends 4412 to allow water to flow to its two sides and converge in the water storage end 4412. When in use, the water storage tank 3 moves along a long row of photovoltaic panels. In this process, the water in the water storage tank 3 flows into the flushing box 42, and then washes the surface of the photovoltaic panel from the flushing pipe 43 at an inclined angle. The slow-flow plate 44 contacts the surface of the photovoltaic panel. After washing the photovoltaic panel, the water flows along the photovoltaic panel and is then blocked by the slow-flow plate 44. Figure 4 The water sprayed from the flushing pipe 43 toward the water storage plate 441 flows into the water storage end 4412 until the water storage end 4412 is filled with water. Only then can the subsequent water flow onto the inclined plate 442 and then flow along the inclined plate 442.

[0042] The water sprayed from the flushing pipe 43 toward the inclined plate flows directly onto the inclined plate, and then flows along the inclined plate. Part of the water flowing along the inclined plate flows through the water leakage hole in the width direction of a long row of photovoltaic panels, and after contacting the dust and impurities on the photovoltaic panels, it soaks the dust and impurities on the surface of the photovoltaic panels. The other part of the water flows along the inclined plate to both sides of the slow flow plate 44, and the photovoltaic panels that have been cleaned on one side are rinsed again, and the photovoltaic panels on the other side that have not been cleaned are pre-soaked with water. Then the slide 41 moves along the width direction of the water tank 3, and the impurity removal and anti-scratch component 45 cleans the impurities on the surface of the photovoltaic panels. The cleaning brush on one side of the slow flow plate 44 cleans as it moves. The dust on the surface of the photovoltaic panel is cleaned after one photovoltaic panel is cleaned along the width direction of the water tank 3. The slide plate 41 moves to the starting point of the water tank 3, and then the water tank 3 moves to the next photovoltaic panel in a long row of photovoltaic panels. Since some water remains in the water storage end 4412 of the water storage plate 441, the water tank 3 will drive the slow flow plate 44 to move and soak the photovoltaic panel in advance. In addition, the water in the water storage end 4412 will also partially flow out when the slow flow plate 44 moves, and then flow along the inclined plate 442, soaking the dust on the surface of a larger range of photovoltaic panels in advance, until the water tank 3 moves from one end to the other along the long row of photovoltaic panels to complete the cleaning of the entire row of photovoltaic panels.

[0043] Then the water tank 3 returns to the starting point, and the clamping component 2 re-fixes the water tank 3 on the horizontal plate 1. The water tank 3 is detached from the photovoltaic panel, and all the water in the water storage end 4412 of the water storage plate 441 flows out along the surface of the photovoltaic panel, and the surface of the photovoltaic panel is rinsed again until the staff moves the horizontal plate 1 to the next row of photovoltaic panels. Repeating the above process of cleaning the photovoltaic panels can slow down the speed of water flowing along the photovoltaic panels, and at the same time, the dust on the uncleaned photovoltaic panels is soaked in advance, and the cleaned photovoltaic panels are rinsed again. After the cleaning is completed, the water in the water storage end 4412 of the water storage plate 441 is used to rinse the photovoltaic panels again. This not only increases the degree of dust soaking on the surface of the photovoltaic panels, reduces the difficulty of cleaning the photovoltaic panels, thereby reducing the water consumption for cleaning the photovoltaic panels, but also can be cleaned again after cleaning to ensure the cleaning effect of the photovoltaic panel surface.

[0044] In order to achieve the purpose of moving the cleaning structure along the length and width direction of the photovoltaic panel, this embodiment is provided with a structure that drives the slow flow flushing component 4 to move along the length and width direction of the photovoltaic panel. Figure 2The bottom of the water tank 3 is provided with a driving groove, and one side of the inner wall of the driving groove is provided with a driving wheel 5 movably extending to the outside thereof. One side of the inner wall of the driving groove is fixedly connected to a transverse driving motor 6 for driving the driving wheel 5 to rotate. The bottom of the water tank 3 is provided with a track groove, and the top of the slide plate 41 is provided with a slider 7 with one end movably extending to the inside of the track groove. A threaded rod 8 movably passes through the slider 7 between the two sides of the inner wall of the track groove. One side of the water tank 3 is fixedly connected to a longitudinal driving motor 9 for driving the threaded rod 8 to rotate. When in use, the transverse driving motor 6 drives the driving wheel 5 to rotate, and then drives the water tank 3 to move along the length direction of a long row of photovoltaic panels. When the water tank 3 moves to a photovoltaic panel, the transverse driving motor 6 stops working, and the longitudinal driving motor 9 drives the slider 7 and the slow-flow flushing component 4 to move along the width direction of a long row of photovoltaic panels until the slow-flow flushing component 4 has cleaned a photovoltaic panel.

[0045] Then the longitudinal drive motor 9 drives the slider 7 and the slow-flow flushing component 4 to start to the starting point, and the transverse drive motor 6 drives the water tank 3 to move to the next photovoltaic panel, and repeats the above process to clean a long row of photovoltaic panels one by one. Until a long row of photovoltaic panels is completely cleaned, the transverse drive motor 6 drives the water tank 3 back to the transverse board 1, and the clamping component 2 re-fixes the water tank 3 on the transverse board 1. The water pipe on the transverse board 1 replenishes water to the inside of the water tank 3 until the staff moves the transverse board 1 to the next row of photovoltaic panels and repeats the above process of cleaning the photovoltaic panels. It can move along the length and width of the photovoltaic panels, which is convenient for cleaning the dust and impurities on the surface of a long row of photovoltaic panels.

[0046] When cleaning the surface of the photovoltaic panel, the cleaning brush on one side of the slow flow plate 44 moves along the surface of the photovoltaic panel. Compared with using only water flow to rinse, it can improve the effect of cleaning the dust and impurities on the surface of the photovoltaic panel. However, when the granular impurities are cleaned by the cleaning brush, they will produce a long period of friction with the surface of the photovoltaic panel, which is easy to cause scratches on the surface of the photovoltaic panel. In order to reduce the distance that the granular impurities slide along the surface of the photovoltaic panel, refer to Figure 6 , a debris removal and anti-scratch component 45 is proposed, which directly removes granular impurities on the surface of the photovoltaic panel from the photovoltaic panel. The debris removal and anti-scratch component 45 includes a horizontal block 451 fixedly connected to the slow flow plate 44, and a semicircular groove is provided at the bottom of the horizontal block 451. The inner wall of the semicircular groove is provided with an arc plate 452 whose two ends are movably extended to the outside of the semicircular groove, and both ends of the arc plate 452 are fixedly connected to the outward expansion plate 453. A horizontal tube 454 with closed two ends is rotatably connected between the two sides of the slow flow plate 44, and the outer surface of the horizontal tube 454 is provided with an annular cloth block 455 that slides with the arc plate 452. The outer side of the annular cloth block 455 is provided with a plurality of ventilation holes connected to the horizontal tube 454, and an arc channel is provided on the top of the arc plate 452. The central angle of the arc channel is greater than the central angle of the two adjacent ventilation holes, ensuring that the arc channel is always connected to at least one ventilation hole, and an exhaust component 456 is installed on the top of the horizontal block 451.

[0047] When in use, the horizontal block 451 moves along the width direction of a long row of photovoltaic panels with the slow flow plate 44, and the annular cloth block 455 contacts the surface of the photovoltaic panels and rolls along the surface of the photovoltaic panels during movement. The air extraction component 456 extracts the air inside the horizontal pipe 454 through the vents and the arc-shaped channel, so that a negative pressure is formed in the horizontal pipe 454. The granular impurities on the surface of the photovoltaic panels are adsorbed on the vents on the annular cloth block 455, and some of the granular impurities are squeezed on the surface of the annular cloth block 455, and then rotate along the annular cloth block 455. When entering the curved plate 452, the outward expansion plate 453 prevents the granular impurities on the annular cloth block 455 from being scraped off by the curved plate 452, until the granular impurities on the annular cloth block 455 rotate with the annular cloth block 455 to the curved channel, and the granular impurities on the annular cloth block 455 are carried away by the airflow driven by the exhaust component 456. The negative pressure and the adsorption force between the annular cloth block 455 and the granular impurities can be used to separate the granular impurities from the photovoltaic panel, preventing the cleaning brush from driving the granular impurities to slide along the surface of the photovoltaic panel and scratching the photovoltaic panel.

[0048] In order to collect particulate impurities on the surface of the photovoltaic panel, an exhaust assembly 456 is provided in this embodiment. The exhaust assembly 456 includes a longitudinal tube 4561 connected to the arc channel. The top of the longitudinal tube 4561 is connected to the arc tube 4562. The end of the arc tube 4562 away from the longitudinal tube 4561 is closed. A micro air pump 4563 for extracting the air inside the arc tube 4562 is installed on the top of the arc tube 4562. When in use, the micro air pump 4563 extracts the air in the horizontal tube 454 and adsorbs the impurities on the photovoltaic panel on the annular cloth block 455 until the annular cloth block 455 is The granular impurities on the circular cloth block 455 move to the annular channel, and the airflow driven by the micro air pump 4563 draws the granular impurities on the annular cloth block 455 into the arc tube 4562, until the granular impurities pass through the highest point of the arc tube 4562 and fall to the end of the arc tube 4562 away from the horizontal block 451. The air entering the arc tube 4562 is drawn to the outside of the arc tube 4562 by the micro air pump 4563, which can guide the granular impurities on the surface of the photovoltaic panel to move to the designated position, prevent the granular impurities from clogging the exhaust channel, and also facilitate the centralized cleaning of the granular impurities on the surface of the photovoltaic panel.

[0049] Example 2

[0050] In order to spray water on the surface of photovoltaic panels in advance and reduce the time of spraying water and waiting for soaking after cleaning the photovoltaic panels, refer to Figure 1-Figure 7On the basis of Example 1, the flushing method of the flushing box 42 and the flushing pipe 43 is improved. The top of the slide 41 is fixedly connected to the longitudinal plate 10, and a bent tube 11 with one end passing through the longitudinal plate 10 is provided on one side of the longitudinal plate 10. One end of the bent tube 11 is connected to a hose 12, and one end of the hose 12 extends to the inside of the flushing box 42. The flushing box 42 is rotatably connected to the slide 41. A water distribution pipe 19 is fixedly connected between the two sides of the inner wall of the flushing box 42. A plurality of leakage holes are provided on the side of the water distribution pipe 19 close to the flushing pipe 43. The hose 12 is connected to the water distribution pipe 19, and the end of the bent tube 11 away from the hose 12 is connected to the hose 2 13. One end of the hose 2 13 is movably extended to the inside of the water storage tank 3. The end of the bent tube 11 close to the slide 41 is equipped with a solenoid valve 14.

[0051] When in use, the solenoid valve 14 controls the water inside the water storage tank 3 to be transported to the inside of the flushing box 42. The water first enters the water distribution pipe 19 until the water level in the water distribution pipe 19 reaches the leaking hole. Then the water in the water distribution pipe 19 flows to the inner bottom of the flushing box 42 until the water level in the flushing box 42 reaches the flushing pipe 43. Then the water in the flushing box 42 is sprayed from the flushing pipe 43 to the photovoltaic panel. Since there is always water in the flushing box 42 with a liquid level lower than that in the flushing pipe 43, when the water storage tank 3 moves along the length of a long row of photovoltaic panels, the flushing box 4 2 generates a small amplitude of shaking during the movement, so that a part of the water retained in the flushing box 42 is discharged from the flushing pipe 43, until the solenoid valve 14 replenishes the water in the water storage tank 3 into the flushing box 42. Before the flushing equipment moves to the photovoltaic panel cleaning position, a small amount of water can be sprayed on the photovoltaic panel to pre-infiltrate the dust and impurities on the surface of the photovoltaic panel to be cleaned, reducing the waiting time for the cleaning equipment to move to the photovoltaic panel cleaning position and then spraying water, so that the dust and impurities on the photovoltaic panel can be cleaned faster after being soaked.

[0052] Example 3

[0053] In order to fix the water tank 3, it is convenient to move the water tank 3 to the designated position. Figures 1-10On the basis of embodiment 1, the clamping assembly 2 includes a limit frame 21 fixedly connected to the bottom of the horizontal plate 1, and a longitudinal block 22 is rotatably connected between the two sides of the inner wall of the limit frame 21. The bottom of the longitudinal block 22 is fixedly connected to a bracket 23, and a support rod 24 is rotatably connected between the two sides of the bracket 23. The end of the support rod 24 close to the water tank 3 is fixedly connected to the extrusion plate 25. The bottom of the horizontal plate 1 is equipped with a driving extrusion assembly 26 for pushing the support rod 24 along the width direction of the water tank 3. The driving extrusion assembly 26 includes a horizontal frame 261 installed at the bottom of the horizontal plate 1, and a threaded rod 262 is rotatably connected between the two sides of the horizontal frame 261. A clamping motor 263 for driving the threaded rod 262 to rotate is fixedly connected to one side of the frame 261, and a connecting rod is rotatably connected between the two support rods 24. A rotating block 264 is provided in the middle of the connecting rod and passes through the connecting rod. The connecting rod extends movably to the inside of the rotating block 264, and a bending block 265 is provided on the outside of the threaded rod 262. A limiting rod 266 is provided at the bottom of the bending block 265, one end of which movably passes through the rotating block 264. A block is fixedly connected to the bottom of the limiting rod 266. Arc grooves corresponding to the support rods 24 are provided on both sides of the water tank 3, and a limiting groove adapted to the support rod 24 is provided on the inner top of the arc groove.

[0054] When in use, the clamping motor 263 drives the limit rod 266 to move, and then drives the rotating block 264 and the connecting rod to move, and then pushes the support rod 24 and the longitudinal block 22 to rotate along the limit frame 21, so that the support rod 24 tilts upward and gradually approaches the water tank 3. When the position of the water tank 3 is offset and not aligned with the support rod 24, the arc groove on the water tank 3 slides along the support rod 24 until the support rod 24 slides into the limit groove, until the extrusion plate 25 squeezes the water tank 3 from both sides, squeezing the water tank 3 onto the horizontal plate 1 from both sides, which can not only fix the water tank 3, but also drive the water tank 3 to rise and separate from the photovoltaic panel, and at the same time adjust the position of the water tank 3. The water tank 3 can be fixed by only moving it to the approximate position.

[0055] Example 4

[0056] In order to facilitate the movement of the cleaning device from one long row of photovoltaic panels to another long row of photovoltaic panels, the cleaning device can be automatically moved, thereby eliminating the need for staff to carry the cleaning device to the photovoltaic panels. Figures 1-11On the basis of embodiment 1, a moving method of the horizontal plate 1 is proposed. The top of the horizontal plate 1 is fixedly connected with a plurality of protrusions 15 with perforations. One side of the protrusion 15 is provided with a cable 16 passing through the protrusion 15. The outside of the cable 16 is fixedly connected with a plurality of limit balls near the protrusion 15. Both ends of the cable 16 are installed with longitudinal rods 17. The bottom of the longitudinal rod 17 is fixedly connected with a pad 18. When in use, the pad 18 is fixed to the two ends of the photovoltaic panel installation site along the width direction of a long row of photovoltaic panels. The cable 16 passes through the protrusion 15 on the top of the horizontal plate 1. The limit ball prevents the horizontal plate 1 from moving relative to the cable 16. A tractor is used to pull The movable cable 16 moves from one longitudinal rod 17 to another longitudinal rod 17, thereby driving the horizontal plate 1 and the water tank 3 and slow-flow flushing component 4 thereon to move from one long row of photovoltaic panels to another long row of photovoltaic panels. After the clamping component 2 is released, the water tank 3 falls onto the photovoltaic panel, and the water tank 3 moves along a long row of photovoltaic panels for cleaning. After cleaning, it returns to the starting point, and the clamping component 2 re-fixes the water tank 3 on the horizontal plate 1. Then the cable 16 drives the horizontal plate 1 to continue to move to the next row of photovoltaic panels, realizing the fully automatic cleaning process of the self-cleaning device on the surface of the photovoltaic panel, and there is no need for staff to move the cleaning device to the photovoltaic panel.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning device applied to the surface of a photovoltaic module, comprising a horizontal plate (1), characterized in that: Two groups of clamping assemblies (2) are installed at the bottom of the transverse plate (1), and a water storage tank (3) is detachably fixed to the bottom of the transverse plate (1) by the two groups of clamping assemblies (2), the water storage tank (3) is provided with a water inlet, and a receiving groove is opened at the bottom of the water storage tank (3), and a slow-flow flushing assembly (4) slidably connected to the water storage tank (3) is provided in the receiving groove; The slow-flow flushing assembly (4) comprises a slide plate (41) slidably connected to the water storage tank (3); a flushing box (42) is installed at the bottom of the slide plate (41); one side of the flushing box (42) is connected to a plurality of flushing pipes (43); a slow-flow plate (44) is fixedly connected to the bottom of the slide plate (41) for slowing down the flow speed of flushing water along the surface of the photovoltaic panel; a cleaning brush is fixedly connected to the side of the slow-flow plate (44) away from the flushing box (42); and a debris removal and anti-scratch assembly (45) is installed on the slow-flow plate (44) for absorbing granular impurities on the surface of the photovoltaic panel; The slow flow plate (44) comprises two inclined plates (442) fixed at the bottom of the slide plate (41), and a water storage plate (441) located between the two inclined plates (442) and formed integrally therewith; a plurality of water leakage holes are provided on a side of the inclined plate (442) away from the slide plate (41); the water storage plate (441) comprises a water storage end (4412) connected to an opposite end of the two inclined plates (442); during cleaning, the flushing pipe (43) acts on the water storage end (4412) and stores water therein until it is fully loaded and then flows along the inclined plate (442); an arc-shaped protrusion (4411) is provided between the two water storage ends (4412) so that water flows to both sides thereof and converges in the water storage end (4412); The impurity removal and anti-scratch component (45) comprises a transverse block (451) fixedly connected to the slow flow plate (44); a semicircular groove is provided at the bottom of the transverse block (451); an arc plate (452) is provided on the inner wall of the semicircular groove, both ends of which are movably extended to the outside of the semicircular groove; both ends of the arc plate (452) are fixedly connected to an outer expansion plate (453); a transverse tube (454) with closed ends is rotatably connected between the two sides of the slow flow plate (44); an annular cloth block (455) is sleeved on the outside of the transverse tube (454) and is slidable with the arc plate (452); a plurality of vents in communication with the transverse tube (454) are provided on the outside of the annular cloth block (455); an arc channel is provided on the top of the arc plate (452); the central angle of the arc channel is greater than the central angle of two adjacent vents; and an air extraction component (456) is installed on the top of the transverse block (451); The air extraction component (456) comprises a longitudinal tube (4561) connected to the arc-shaped channel, the top of the longitudinal tube (4561) is connected to the arc-shaped tube (4562), one end of the arc-shaped tube (4562) away from the longitudinal tube (4561) is closed, and a micro air pump (4563) for extracting air from the arc-shaped tube (4562) is installed on the top of the arc-shaped tube (4562).

2. A self-cleaning device applied to the surface of a photovoltaic module according to claim 1, characterized in that: A driving groove is provided at the bottom of the water storage tank (3), a driving wheel (5) movably extending to the outside of the driving groove is provided on one side of the inner wall of the driving groove, and a transverse driving motor (6) for driving the driving wheel (5) to rotate is fixedly connected to one side of the inner wall of the driving groove.

3. The self-cleaning device applied to the surface of a photovoltaic module according to claim 1, characterized in that: A track groove is provided at the bottom of the water storage tank (3); a slider (7) is provided at the top of the slide plate (41) and one end of the slider extends movably into the track groove; a threaded rod (8) movably penetrating the slider (7) is provided between the two sides of the inner wall of the track groove; and a longitudinal drive motor (9) is fixedly connected to one side of the water storage tank (3) for driving the threaded rod (8) to rotate.

4. The self-cleaning device applied to the surface of a photovoltaic module according to claim 1, characterized in that: The top of the slide plate (41) is fixedly connected to a longitudinal plate (10), one side of the longitudinal plate (10) is provided with a bent tube (11) with one end penetrating the longitudinal plate (10), one end of the bent tube (11) is connected to a hose 1 (12), one end of the hose 1 (12) extends to the inside of the flushing box (42), the flushing box (42) and the slide plate (41) are rotatably connected, a water distribution pipe (19) is fixedly connected between the two sides of the inner wall of the flushing box (42), a plurality of water leakage holes are provided on a side of the water distribution pipe (19) close to the flushing pipe (43), the hose 1 (12) is connected to the water distribution pipe (19), the end of the bent tube (11) away from the hose 1 (12) is connected to the hose 2 (13), one end of the hose 2 (13) movably extends to the inside of the water storage tank (3), and a solenoid valve (14) is installed on the end of the bent tube (11) close to the slide plate (41).

5. The self-cleaning device applied to the surface of a photovoltaic module according to claim 1, characterized in that: The clamping assembly (2) comprises a limit frame (21) fixedly connected to the bottom of the transverse plate (1); a longitudinal block (22) is rotatably connected between the inner walls of the limit frame (21); a bracket (23) is fixedly connected to the bottom of the longitudinal block (22); a support rod (24) is rotatably connected between the two sides of the bracket (23); an extrusion plate (25) is fixedly connected to one end of the support rod (24) close to the water tank (3); and a driving extrusion assembly (26) is installed at the bottom of the transverse plate (1) for pushing the support rod (24) along the width direction of the water tank (3).

6. The self-cleaning device applied to the surface of a photovoltaic module according to claim 5, characterized in that: The driving extrusion assembly (26) comprises a transverse frame (261) mounted at the bottom of the transverse plate (1); a second threaded rod (262) is rotatably connected between the two sides of the transverse frame (261); a clamping motor (263) for driving the second threaded rod (262) to rotate is fixedly connected to one side of the transverse frame (261); a connecting rod is rotatably connected between the two support rods (24); a rotating block (264) penetrating the connecting rod is provided in the middle of the connecting rod; the connecting rod movably extends into the interior of the rotating block (264); a bending block (265) is sleeved on the outside of the second threaded rod (262); a limiting rod (266) having one end movably penetrating the rotating block (264) is provided at the bottom of the bending block (265); a stopper is fixedly connected to the bottom of the limiting rod (266).

7. The self-cleaning device applied to the surface of a photovoltaic module according to claim 5, characterized in that: Arc-shaped grooves corresponding to the support rods (24) are provided on both sides of the water storage tank (3), and a limiting groove adapted to the support rods (24) is provided on the inner top of the arc-shaped groove.

8. The self-cleaning device applied to the surface of a photovoltaic module according to claim 1, characterized in that: A plurality of protrusions (15) with holes are fixedly connected to the top of the transverse plate (1), a cable (16) penetrating the protrusion (15) is provided on one side of the protrusion (15), a plurality of limit balls are fixedly connected to the outside of the cable (16) near the protrusion (15), longitudinal rods (17) are installed at both ends of the cable (16), and a cushion block (18) is fixedly connected to the bottom of the longitudinal rod (17).

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