Cleaning device for photovoltaic power station assembly

Abstract

The invention relates to the technical field of photovoltaic equipment maintenance, in particular to a photovoltaic power station assembly cleaning device which comprises an upper guide rail assembly and a lower guide rail assembly which are hinged to the upper end and the lower end of a photovoltaic assembly respectively. A cleaning assembly corresponding to the surface of the photovoltaic assembly is connected between the two sliding assemblies in a hinged mode. A water distribution assembly connected with the cleaning assembly is arranged between the upper guide rail assembly and the sliding assembly on the upper guide rail assembly, a water pumping assembly communicated with the water distribution assembly is connected to the upper guide rail assembly, and a water collecting assembly connected with the water pumping assembly is correspondingly installed at the lower end of the photovoltaic assembly. Through multi-hinge adaptation of a mechanical structure, precise driving of a gear and a rack, collaborative cleaning of hydraulic power and machinery and resource reuse of water circulation, the cleaning efficiency and the water-saving capacity are remarkably improved while the cleaning coverage rate and the assembly safety are guaranteed, and the large-scale operation and maintenance requirements of different photovoltaic power stations are met.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic equipment maintenance technology, and more specifically to a cleaning device for photovoltaic power plant modules. Background Art

[0002] During the operation of a photovoltaic power station, dust, bird droppings, sand and other pollutants easily adhere to the surface of photovoltaic modules, leading to a decrease in light absorption efficiency and a reduction in power generation. Long-term accumulation may also cause hot spot effects on the modules and shorten their service life. Therefore, it is necessary to clean the surface of photovoltaic modules regularly.

[0003] Existing cleaning methods generally rely on manual cleaning, which is not only inefficient and costly but also poses safety hazards due to working at heights. Meanwhile, some traditional mechanical cleaning devices use fixed track designs, which cannot be adapted to photovoltaic modules with different installation angles, and are prone to problems such as poor fit and cleaning dead spots. At the same time, high-pressure water jet cleaning consumes a lot of water, which limits its applicability in arid areas.

[0004] Therefore, how to achieve adaptive, water-saving, low-damage, and efficient cleaning of photovoltaic modules is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In order to overcome the shortcomings of existing photovoltaic module cleaning devices, such as poor adaptability, high water consumption, and easy damage to the modules, this application provides a cleaning device for photovoltaic power station modules.

[0006] This application provides a technical solution for a photovoltaic power plant module cleaning device, which adopts the following approach: A cleaning device for photovoltaic power plant modules includes an upper guide rail assembly hinged to the upper end of the photovoltaic module, and a lower guide rail assembly hinged to the lower end of the photovoltaic module. Sliding components are mounted on both the upper and lower guide rail assemblies, and a cleaning component corresponding to the surface of the photovoltaic module is hinged between the two sliding components. A water distribution assembly connected to the cleaning component is provided between the upper guide rail assembly and the sliding components thereon. A water pump assembly communicating with the water distribution assembly is connected to the upper guide rail assembly, and a water collection assembly connected to the water pump assembly is installed at the lower end of the photovoltaic module.

[0007] Furthermore, the upper guide rail assembly includes an upper guide rail bracket, which is hinged to a first mounting bracket corresponding to the top of the photovoltaic module, and an upper guide rail is fixedly mounted on the upper guide rail bracket; the lower guide rail assembly includes a lower guide rail bracket, which is hinged to a water collection component corresponding to the bottom of the photovoltaic module, and a lower guide rail is fixedly mounted on the lower guide rail bracket; the two sliding components are respectively mounted on the upper guide rail and the lower guide rail.

[0008] Furthermore, the sliding assembly includes sliding seats, two of which are slidably connected to the upper guide rail and the lower guide rail, respectively. On the side of the upper guide rail bracket and the lower guide rail bracket that is far from each other, racks are fixedly installed corresponding to the length direction of the photovoltaic module. A drive motor is fixedly installed on each sliding seat corresponding to the rack. A drive gear is fixedly installed on the output shaft of each drive motor corresponding to the rack, and the drive gear meshes with the rack. A hinge seat is fixedly installed on the side of the two sliding seats that is close to each other, and the cleaning assembly is hinged between the two hinge seats.

[0009] Furthermore, the cleaning assembly includes a mounting plate, with hinged lugs fixedly connected to the upper surface of the mounting plate near its two ends. The mounting plate is hinged to the two sliding assemblies via the corresponding hinged lugs. A cleaning box is fixedly and sealed on the lower surface of the mounting plate, and several cleaning brushes arranged in parallel are mounted on the cleaning box. A pressure equalization chamber is formed on the side of the cleaning box near the mounting plate, and a water inlet seat communicating with the pressure equalization chamber is fixedly connected to the mounting plate. The water inlet seat is sealed and communicated with the water distribution assembly. A rinsing hole is formed on the side of the cleaning box away from the mounting plate corresponding to each cleaning brush, and a liquid flow channel communicating with the rinsing hole and the pressure equalization chamber is formed inside the cleaning box.

[0010] Furthermore, a rotary drive chamber is provided on the side of the cleaning box away from the mounting plate for each cleaning brush. The liquid flow channel runs through the rotary drive chamber in a centrally symmetrical manner. A drive impeller is rotatably connected inside the rotary drive chamber. A spline hole is provided in the center of the drive impeller. A spline shaft is installed inside the spline hole. The end of the spline shaft away from the pressure equalization chamber is fixedly connected to the cleaning brush.

[0011] Furthermore, an axial drive cavity is provided inside the cleaning box corresponding to the end of the spline shaft near the pressure equalization cavity. The axial drive cavity is connected to the pressure equalization cavity. A piston body is sealed and movably connected inside the axial drive cavity. The piston body is fixedly connected to the end of the spline shaft near the pressure equalization cavity. A spring piece fitted on the outside of the spline shaft is installed inside the axial drive cavity. The spring piece abuts between the piston body and the axial drive cavity.

[0012] Furthermore, the water distribution assembly includes a water distribution valve sleeve, which has water distribution holes axially penetrating both ends. A water distribution channel is formed inside the upper guide rail. Several equally spaced valve sleeve mounting holes are formed along the length of the upper guide rail. Each valve sleeve mounting hole is sealed and fitted with a water distribution valve sleeve. A valve core sliding hole penetrating the sidewall is formed inside the water distribution channel on the water distribution valve sleeve. A valve core mounting hole penetrating the sidewall is coaxially formed on the upper guide rail corresponding to the valve core sliding hole. A valve core is slidably and sealed inside the valve core mounting hole. The valve core is slidably and sealed to the water distribution valve sleeve through the valve core sliding hole. A water passage hole is formed on the valve core corresponding to the water distribution hole. The outer end of the valve core extends through the outside of the upper guide rail. An adjusting plug is sealed and connected to the upper guide rail corresponding to the inner end of the valve core. A spring is fixedly installed on the adjusting plug, and the spring abuts against the inner end of the valve core to offset the water passage hole from the water distribution hole. A water distribution groove is opened on the inner side of the sliding seat installed on the upper guide rail corresponding to the water distribution hole. A water outlet hole communicating with the water distribution groove is opened on the sliding seat. A water distribution pipe communicating with the water outlet hole is fixedly and sealed on the sliding seat, and the water distribution pipe is sealed and connected to the cleaning assembly. A sealing end cap and a connecting end cap are fixedly and sealed at both ends of the upper guide rail, respectively. A water inlet pipe is sealed and connected to the connecting end cap, and the water inlet pipe is connected to the pump assembly.

[0013] Furthermore, a guide port is provided on the inner side of the sliding seat mounted on the upper guide rail near its two ends, corresponding to the outer end of the valve core.

[0014] Furthermore, the water pump assembly includes a water pump, the output end of which is fixedly and sealed to a booster pipe, which is connected to the water distribution assembly; the input end of the water pump is fixedly and sealed to a water storage tank, which is connected to the water collection assembly.

[0015] Furthermore, the water collection assembly includes a water collection tank, which is fixedly installed on a second mounting bracket corresponding to the bottom of the photovoltaic module. A water collection pipe is fixedly and sealed to the bottom of the water collection tank. The end of the water collection pipe away from the water collection tank is connected to the water pump assembly. An mounting rod is fixedly installed inside the water collection tank, and the lower guide rail bracket is hinged to the mounting rod.

[0016] Beneficial effects achieved: Strong adaptability: The upper guide rail assembly is hinged to the first mounting bracket on the top of the photovoltaic module through the upper guide rail bracket, and the lower guide rail assembly is hinged to the mounting rod of the water collection assembly through the lower guide rail bracket. Combined with the hinged design of the cleaning assembly and the sliding assembly, the device can adapt to the tilt angle range of the photovoltaic module. The cleaning assembly is always in close contact with the surface of the module, effectively improving the cleaning coverage while avoiding the existence of cleaning dead corners.

[0017] Significant water-saving effect: The pump and water collection components form a closed-loop water circulation. The water collection tank collects cleaning wastewater, which is then filtered and fed into the water storage tank for resupply to the cleaning operation. Compared with traditional cleaning methods, this method effectively reduces the water consumption of the cleaning operation and is especially suitable for photovoltaic power stations in arid and water-scarce areas.

[0018] Low component damage rate: In the axial drive cavity of the cleaning component, the spring sheet and the water flow thrust form a dynamic balance, thereby ensuring stable contact pressure between the cleaning brush and the surface of the photovoltaic module. Combined with the adaptive fit of the hinge structure, it avoids hidden cracks or scratches caused by rigid contact, effectively reducing the glass breakage rate of the photovoltaic module. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application.

[0020] Figure 2 This is a structural exploded view of one embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the internal structure of one embodiment of this application.

[0022] Figure 4 This is an exploded view of the upper guide rail assembly and the lower guide rail assembly in one embodiment of this application.

[0023] Figure 5 yes Figure 3 Enlarged schematic diagram of Part I of the structure.

[0024] Figure 6 This is an exploded view of the cleaning component in one embodiment of this application.

[0025] Figure 7 yes Figure 3 Enlarged schematic diagram of Part II of the structure.

[0026] Figure 8 This is a three-dimensional structural diagram of the sliding seat in one embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 100, Upper guide rail assembly; 101, Upper guide rail bracket; 102, Upper guide rail; 200, Lower guide rail assembly; 201, Lower guide rail bracket; 202, Lower guide rail; 300, Sliding assembly; 301, Sliding seat; 302, Rack; 303, Drive motor; 304, Drive gear; 305, Hinge seat; 400, Cleaning assembly; 401, Mounting plate; 402, Hinge ear plate; 403, Cleaning box; 404, Cleaning brush; 405, Pressure equalization chamber; 406, Water inlet seat; 407, Fluid flushing hole; 408, Liquid flow channel; 409, Rotary drive chamber; 410, Drive impeller; 411, Spline hole; 412, Spline shaft; 413, Axial drive chamber; 414, Piston body; 415, Spring; 500. Water distribution assembly; 501. Water distribution valve sleeve; 502. Water distribution hole; 503. Water distribution channel; 504. Valve sleeve mounting hole; 505. Valve core sliding hole; 506. Valve core mounting hole; 507. Valve core; 508. Water passage hole; 509. Adjusting plug; 510. Spring; 511. Water distribution trough; 512. Water outlet hole; 513. Water distribution pipe; 514. Sealing end cap; 515. Connecting end cap; 516. Water inlet pipe; 517. Guide port; 600. Pump assembly; 601. Water pump; 602. Booster pipe; 603. Water storage tank; 700. Water collection assembly; 701. Water collection trough; 702. Water collection pipe; 703. Mounting rod; 900. Photovoltaic module; 901. First mounting bracket; 902. Second mounting bracket. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail.

[0029] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] This application discloses a cleaning device for photovoltaic power plant modules.

[0032] Please refer to the above as well. Figures 1 to 8 In one embodiment of this application, a photovoltaic power station module cleaning device includes an upper guide rail assembly 100, which is hinged to the upper end of a photovoltaic module 900, and a lower guide rail assembly 200 is hinged to the lower end of the photovoltaic module 900. Sliding components 300 are mounted on both the upper guide rail assembly 100 and the lower guide rail assembly 200, and a cleaning component 400 corresponding to the surface of the photovoltaic module 900 is hinged between the two sliding components 300. A water distribution component 500 connected to the cleaning component 400 is provided between the upper guide rail assembly 100 and the sliding components 300 thereon. A water pump assembly 600 communicating with the water distribution component 500 is connected to the upper guide rail assembly 100, and a water collection component 700 connected to the water pump assembly 600 is mounted on the lower end of the photovoltaic module 900.

[0033] During operation, the upper guide rail assembly 100 and the lower guide rail assembly 200 are hinged to the upper and lower ends of the photovoltaic module 900, respectively, forming a moving track parallel to the surface of the photovoltaic module 900. The sliding assembly 300 can slide back and forth along the upper guide rail assembly 100 and the lower guide rail assembly 200, driving the cleaning assembly 400, which is hinged between the upper guide rail assembly 100 and the lower guide rail assembly 200, to move synchronously. The pumping assembly 600 pressurizes the rainwater or recycled wastewater collected by the water collection assembly 700 and delivers it to the cleaning assembly 400 through the water distribution assembly 500. The cleaning assembly 400 adheres to the surface of the photovoltaic module and completes the spraying and brushing operations during the sliding process. Because the cleaning assembly 400 and the upper and lower sliding assemblies 300 are all hinged, the posture can be adaptively adjusted according to the installation tilt angle of the photovoltaic module 900 to ensure a tight fit with the module surface and eliminate cleaning dead angles. The wastewater after cleaning flows down the surface of the photovoltaic module 900, is recovered by the water collection module 700 at the lower end, and is then filtered and re-supplied to the pumping module 600, thus realizing water resource recycling.

[0034] This technical solution, through its hinged structure and guide rail design, can adapt to photovoltaic modules at different tilt angles, solving the problem of poor adhesion on inclined surfaces in traditional devices. This improves cleaning coverage while allowing the cleaning component 400 to movably adhere to the surface of the photovoltaic module 900 via the hinged structure, avoiding surface damage to the photovoltaic module 900 caused by rigid contact. Simultaneously, the water collection component 700 and the water pumping component 600 form a closed-loop water circulation, significantly improving water conservation compared to traditional cleaning methods, making it particularly suitable for photovoltaic power stations in arid or water-scarce areas. The sliding component 300 drives the cleaning component 400 to complete the entire surface cleaning in one pass, achieving high operational efficiency and reducing cleaning costs.

[0035] Please refer to the above as well. Figures 1 to 8In one embodiment of this application, the upper guide rail assembly 100 includes an upper guide rail bracket 101, which is hinged to a first mounting bracket 901 at the top of the corresponding photovoltaic module 900, and an upper guide rail 102 is fixedly mounted on the upper guide rail bracket 101; the lower guide rail assembly 200 includes a lower guide rail bracket 201, which is hinged to a water collection component 700 at the bottom of the corresponding photovoltaic module 900, and a lower guide rail 202 is fixedly mounted on the lower guide rail bracket 201; two sliding components 300 are respectively mounted on the upper guide rail 102 and the lower guide rail 202.

[0036] During operation, the upper guide rail assembly 100 is hinged to the first mounting bracket 901 on the top of the photovoltaic module 900 via the upper guide rail bracket 101, and the lower guide rail assembly 200 is hinged to the water collection assembly 700 at the bottom of the photovoltaic module 900 via the lower guide rail bracket 201, so that the upper guide rail 102 and the lower guide rail 202 are precisely parallel to the surface of the photovoltaic module 900, forming a stable sliding track; the sliding assembly 300 installed on the upper and lower guide rails can move synchronously back and forth along the track, providing the moving power for the cleaning assembly 400.

[0037] After the water pump assembly 600 is started, it pressurizes the rainwater or recycled sewage collected in the water collection assembly 700 and directs it through the water distribution assembly 500 between the upper guide rail assembly 100 and the sliding assembly 300 to the cleaning assembly 400 hinged between the two sliding assemblies 300. As the sliding assembly 300 moves, the cleaning assembly 400 adheres to the surface of the photovoltaic module 900 and simultaneously completes spraying and brushing to thoroughly remove dust and stains from the surface of the photovoltaic module 900.

[0038] Since the upper guide rail bracket 101 and the first mounting bracket 901, and the lower guide rail bracket 201 and the water collection component 700 are all hinged, and the cleaning component 400 and the sliding component 300 are also hinged, when the photovoltaic module 900 has an installation tilt angle or a slight surface curvature, the guide rail component can adaptively adjust with the component angle to ensure that the cleaning component 400 is always tightly attached to the surface of the photovoltaic module 900, avoiding cleaning dead corners.

[0039] The wastewater generated during the cleaning process will flow naturally along the surface of the photovoltaic module 900 to the water collection module 700 at the bottom. After being filtered by the internal filtration structure of the water collection module, it will re-enter the pump water module 600, forming a closed loop of water circulation of "collection, pressurization, cleaning, and re-collection", realizing the reuse of water resources.

[0040] Please refer to the above as well. Figures 1 to 8In one embodiment of this application, the sliding assembly 300 includes a sliding seat 301. Two sliding seats 301 are slidably connected to the upper guide rail 102 and the lower guide rail 202, respectively. On the side of the upper guide rail bracket 101 and the lower guide rail bracket 201 that are far apart from each other, racks 302 are fixedly installed corresponding to the length direction of the photovoltaic module 900. A drive motor 303 is fixedly installed on the sliding seat 301 corresponding to the rack 302. A drive gear 304 is fixedly installed on the output shaft of the drive motor 303 corresponding to the rack 302. The drive gear 304 meshes with the rack 302. A hinge seat 305 is fixedly installed on the side of the two sliding seats 301 that are close to each other. The cleaning assembly 400 is hingedly connected between the two hinge seats 305.

[0041] During operation, the sliding seat 301 of the sliding component 300 slides in contact with the upper guide rail 102 and the lower guide rail 202 respectively. The racks 302 on the upper guide rail bracket 101 and the lower guide rail bracket 201 are arranged along the length of the photovoltaic module 900. The drive motor 303 drives the drive gear 304 on the output shaft to rotate. Through the meshing transmission between the drive gear 304 and the rack 302, the sliding seat 301 can be driven to move stably along the guide rail, realizing the reciprocating movement of the cleaning component 400. The cleaning component 400 is hinged between the hinge seats 305 of the two sliding seats 301, and will move synchronously with the two sliding seats 301. Because the hinge structure can rotate flexibly, the cleaning component 400 can adapt to the tilt angle of the photovoltaic module 900, always maintaining a tight fit, ensuring that there are no dead angles in the cleaning process.

[0042] Please refer to the above as well. Figures 1 to 8 In one embodiment of this application, the cleaning assembly 400 includes a mounting plate 401. Hinged ear plates 402 are fixedly connected to the upper surface of the mounting plate 401 near its two ends. The mounting plate 401 is hinged to two sliding assemblies 300 via the hinged ear plates 402. A cleaning box 403 is fixedly and sealed on the lower surface of the mounting plate 401. Several cleaning brushes 404 are mounted on the cleaning box 403 in parallel. A pressure equalization chamber 405 is opened on the side of the cleaning box 403 near the mounting plate 401. A water inlet seat 406 communicating with the pressure equalization chamber 405 is fixedly connected to the mounting plate 401. The water inlet seat 406 is sealed and communicated with the water distribution assembly 500. A rinsing hole 407 is opened on the side of the cleaning box 403 away from the mounting plate 401 corresponding to each cleaning brush 404. A liquid flow channel 408 communicating with the rinsing hole 407 and the pressure equalization chamber 405 is opened inside the cleaning box 403.

[0043] During operation, the mounting plate 401 is hinged to the hinge seat 305 of the sliding component 300 via the hinged ear plates 402 at both ends, and moves synchronously with the sliding seat 301 along the upper guide rail 102 and the lower guide rail 202. The hinged structure ensures that the cleaning box 403 adapts to the tilt angle of the photovoltaic module 900, so that the cleaning brush 404 always fits in contact with the module surface. The water flow delivered by the water distribution component 500 enters the pressure equalization chamber 405 through the water inlet seat 406. After equalizing the water pressure, the pressure equalization chamber 405 distributes the water flow to each flushing hole 407 through the internal liquid flow channel 408. The flushing holes 407 are set corresponding to the cleaning brush 404, and spray water in a directional manner onto the contact area between the module surface and the cleaning brush 404, wetting the stains and enhancing the cleaning effect. When the sliding component 300 drives the cleaning component 400 to move, the cleaning brush 404 scrubs the surface of the photovoltaic module 900, while the rinsing hole 407 continuously sprays water. The two work together to remove dust and stains; the wastewater flows down the surface of the photovoltaic module 900 and is eventually recycled by the water collection component 700.

[0044] Please refer to the above as well. Figures 1 to 8 In one embodiment of this application, a rotary drive cavity 409 is provided on the side of the cleaning box 403 away from the mounting plate 401 corresponding to each cleaning brush 404. The liquid flow channel 408 passes through the rotary drive cavity 409 in a centrally symmetrical manner. A drive impeller 410 is rotatably connected inside the rotary drive cavity 409. A spline hole 411 is provided in the center of the drive impeller 410. A spline shaft 412 is installed inside the spline hole 411. The end of the spline shaft 412 away from the pressure equalization cavity 405 is fixedly connected to the cleaning brush 404.

[0045] During operation, water from the equalizing chamber 405 flows into the rotary drive chamber 409 through the liquid flow channel 408. Because the liquid flow channel 408 is centrally symmetrically positioned through the rotary drive chamber 409, the water flow impacts the drive impeller 410 inside the rotary drive chamber 409, causing it to rotate around its central axis. The drive impeller 410, through the engagement of the spline hole 411 and the spline shaft 412, drives the cleaning brush 404 to rotate synchronously, achieving mechanical brushing of the photovoltaic module 900 surface. After the drive impeller 410 rotates, the water flow from the liquid flow channel 408 continues to be sprayed through the rinsing hole 407 into the contact area between the cleaning brush 404 and the module surface, providing a moist environment for brushing and washing away the detached dirt as the cleaning brush 404 rotates. Throughout the process, the water flow serves as both the cleaning medium and the power source for driving the cleaning brush 404 to rotate, achieving "dual use of water".

[0046] Please refer to the above as well. Figures 1 to 8In one embodiment of this application, an axial drive cavity 413 is provided inside the cleaning box 403 at one end of the spline shaft 412 near the pressure equalization cavity 405. The axial drive cavity 413 is connected to the pressure equalization cavity 405. A piston body 414 is sealed and movably connected inside the axial drive cavity 413. The piston body 414 is fixedly connected to one end of the spline shaft 412 near the pressure equalization cavity 405. A spring piece 415 is installed inside the axial drive cavity 413 and is fitted on the outside of the spline shaft 412. The spring piece 415 abuts against the piston body 414 and the axial drive cavity 413.

[0047] During operation, the water flow in the equalizing chamber 405 enters the axial drive chamber 413, acting on the end face of the piston body 414 to generate axial thrust. The piston body 414 drives the spline shaft 412 to move away from the equalizing chamber 405, causing the cleaning brush 404 to press against the surface of the photovoltaic module 900. Simultaneously, the spring plate 415 fitted on the outside of the spline shaft 412 is compressed, generating a reverse elastic force, which forms a dynamic balance with the water flow thrust, achieving adaptive adjustment of the cleaning brush 404 to the pressure on the module surface. When there are protrusions on the surface of the photovoltaic module 900 or the cleaning brush 404 is worn, the spline shaft 412 compresses the spring plate 415 through the piston body 414 to buffer instantaneous pressure peaks. If the surface is concave, the rebound force of the spring plate 415 pushes the piston body 414 back to its original position, ensuring that the cleaning brush 404 always maintains a preset contact pressure with the surface. During this process, the spline shaft 412 can freely extend and retract axially while transmitting rotational power, without affecting the rotational transmission of the drive impeller 410.

[0048] Please refer to the above as well. Figures 1 to 8In one embodiment of this application, the water distribution assembly 500 includes a water distribution valve sleeve 501. The water distribution valve sleeve 501 has water distribution holes 502 extending axially through both ends. A water distribution channel 503 is formed inside the upper guide rail 102. Several valve sleeve mounting holes 504 are evenly distributed along the length of the upper guide rail 102. Each valve sleeve mounting hole 504 is sealed and installed with a water distribution valve sleeve 501. A valve core sliding hole 505, penetrating the sidewall of the water distribution channel 503, is formed on the water distribution valve sleeve 501. A valve core mounting hole 506, coaxially penetrating the sidewall of the upper guide rail 102, is formed on the upper guide rail 102 corresponding to the valve core sliding hole 505. A valve core 507 is sealed and slidably connected inside the valve core mounting hole 506. The valve core 507 is sealed and slidably connected to the water distribution valve sleeve 501 through the valve core sliding hole 505. A water passage hole 508 is formed on the valve core 507 corresponding to the water distribution hole 502. The outer end of the valve core 507 extends to the outside of the upper guide rail 102. An adjusting plug 509 is sealed and connected to the inner end of the valve core 507 on the upper guide rail 102. A spring 510 is fixedly installed on the adjusting plug 509. The spring 510 abuts against the inner end of the valve core 507 to make the water passage hole 508 and the water distribution hole 502 misaligned. A water distribution groove 511 is opened on the inner side of the sliding seat 301 installed on the upper guide rail 102 corresponding to the water distribution hole 502. A water outlet hole 512 communicating with the water distribution groove 511 is opened on the sliding seat 301. A water distribution pipe 513 communicating with the water outlet hole 512 is fixedly and sealed and installed on the sliding seat 301. The water distribution pipe 513 is sealed and connected to the cleaning assembly 400. A sealing end cap 514 and a connecting end cap 515 are fixedly and sealed and installed at both ends of the upper guide rail 102, respectively. A water inlet pipe 516 is sealed and connected to the connecting end cap 515. The water inlet pipe 516 is connected to the water pump assembly 600.

[0049] During operation, the water pump assembly 600 delivers water through the inlet pipe 516 and the connecting end cover 515 into the water distribution channel 503 of the upper guide rail 102. Under normal conditions, the valve core 507 maintains its initial position under the elastic force of the spring 510 and the adjusting plug 509, so that the water passage hole 508 of the valve core 507 is misaligned with the water distribution hole 502 of the water distribution valve sleeve 501, and the water distribution hole 502 is in the closed state. When the sliding seat 301 moves along the upper guide rail 102 to the position of the corresponding water distribution valve sleeve 501, the water distribution groove 511 on the inner side of the sliding seat 301 pushes the outer end of the valve core 507, and the compression spring 510 causes the valve core 507 to move axially. The water passage 508 and the water distribution hole 502 will then align, and the water flow can enter the water distribution groove 511 in sequence through the water distribution channel 503, the water passage 508, and the water distribution hole 502, and then be transported to the cleaning assembly 400 through the water outlet 512 and the water distribution pipe 513.

[0050] During the movement of the sliding seat 301, the valve core 507 at that position will be pushed open to allow water to flow only when the water distribution trough 511 is aligned with the corresponding water distribution valve sleeve 501. Other water distribution valve sleeves 501 remain sealed because the valve core 507 is closed. The sealing end caps 514 and connecting end caps 515 at both ends of the upper guide rail 102 ensure that the water distribution channel 503 is completely sealed. The sealing sliding fit between the valve core 507 and the valve core mounting hole 506 and the valve core sliding hole 505 can prevent water leakage.

[0051] Please refer to the above as well. Figures 1 to 8 In one embodiment of this application, a guide port 517 is provided on the inner side of the sliding seat 301 mounted on the upper guide rail 102 near its two ends, corresponding to the outer end of the valve core 507.

[0052] During operation, when the sliding seat 301 mounted on the upper guide rail 102 moves along the upper guide rail 102, the guide port 517 on the inner side of the sliding seat 301 near both ends contacts the outer end of the valve core 507 before the main body of the sliding seat 301. The guide port 517 has an inclined or arc-shaped structure, which can smoothly guide the outer end of the valve core 507 and prevent the sliding seat 301 from directly impacting the valve core 507. As the sliding seat 301 continues to move, the guide port 517 gradually pushes the valve core 507 to compress the spring 510, so that the water passage hole 508 of the valve core 507 is slowly aligned with the water distribution hole 502 of the water distribution valve sleeve 501, so as to achieve smooth water flow.

[0053] Please refer to the above as well. Figures 1 to 8 In one embodiment of this application, the water pump assembly 600 includes a water pump 601, the output end of which is fixedly and sealed to a booster pipe 602, which is connected to the water distribution assembly 500; the input end of the water pump 601 is fixedly and sealed to a water storage tank 603, which is connected to the water collection assembly 700.

[0054] During operation, the water storage tank 603 of the pump water assembly 600 stores the cleaning wastewater recovered by the water collection assembly 700. After preliminary filtration, the water pump 601 draws water from the water storage tank 603 after starting. The booster pipe 602 is set in a conical shape, which can increase the water pressure. After the water flow is pressurized, it is delivered to the inlet pipe 516 in the water distribution assembly 500 to provide continuous water flow power for the entire cleaning system.

[0055] The pressurized water flows through the water distribution channel 503 and water distribution valve sleeve 501 of the water distribution component 500 and is supplied to the cleaning component 400 as needed, driving the cleaning brush 404 to rotate and spray through the flushing hole 407; the wastewater after cleaning flows back to the water collection component 700 along the surface of the photovoltaic module 900, and after treatment, it flows back into the water storage tank 603, forming a closed-loop water cycle of "recycling, storage, pressurization and reuse".

[0056] Please refer to the above as well. Figures 1 to 8 In one embodiment of this application, the water collection assembly 700 includes a water collection tank 701, which is fixedly installed on a second mounting bracket 902 at the bottom of the corresponding photovoltaic module 900. A water collection pipe 702 is fixedly and sealed to the bottom of the water collection tank 701. One end of the water collection pipe 702 away from the water collection tank 701 is connected to the water pump assembly 600. An mounting rod 703 is fixedly installed inside the water collection tank 701, and a lower guide rail bracket 201 is hinged to the mounting rod 703.

[0057] During operation, the wastewater generated by the cleaning component 400 after cleaning the photovoltaic module 900 flows naturally down the surface of the photovoltaic module 900 and eventually flows into the water collection tank 701 fixedly installed on the second mounting bracket 902. The wastewater collected in the water collection tank 701 is directionally transported to the water storage tank 603 of the pumping component 600 through the water collection pipe 702 with a bottom seal connection, providing a recycled water source for water circulation and forming a closed-loop process of "cleaning, recycling, and reuse". The mounting rod 703 fixedly installed inside the water collection tank 701 provides a hinge support point for the lower guide rail bracket 201 of the lower guide rail component 200. The lower guide rail bracket 201 can rotate around the mounting rod 703. Combined with the hinge structure between the upper guide rail component 100 and the first mounting bracket 901, the upper guide rail 102 and the lower guide rail 202 can adaptively adjust with the installation tilt angle of the photovoltaic module 900, ensuring that the sliding component 300 drives the cleaning component 400 to move stably.

[0058] The implementation principle of a photovoltaic power station module cleaning device according to an embodiment of this application is as follows: First, a stable operating frame is constructed by hinged positioning of the guide rail assembly: the upper guide rail bracket 101 of the upper guide rail assembly 100 is hinged to the first mounting bracket 901 on the top of the photovoltaic module 900, and the lower guide rail bracket 201 of the lower guide rail assembly 200 is hinged to the mounting rod 703 of the water collection assembly 700 at the bottom of the photovoltaic module 900, so that the upper guide rail 102 and the lower guide rail 202 are precisely parallel to the surface of the photovoltaic module 900, forming a sliding track that adapts to the tilt angle of the module.

[0059] Secondly, the gear and rack drive of the sliding component enables precise movement of the cleaning component: the sliding seat 301 slides and engages with the upper guide rail 102 and the lower guide rail 202 respectively, and the drive motor 303 drives the drive gear 304 to rotate. Through the meshing transmission with the rack 302, the sliding seat 301 moves synchronously back and forth along the guide rail; the cleaning component 400 is hinged to the hinge seat 305 of the sliding seat 301 through the hinge ear plate 402 of the mounting plate 401. While moving synchronously with the sliding seat, it can rotate flexibly around the hinge point to adapt to the tilt angle or slight curvature of the photovoltaic module surface, ensuring that the cleaning brush 404 is always in close contact with the module surface.

[0060] Furthermore, the cleaning component utilizes a water-driven and pressure-adaptive collaborative cleaning system: the water pump 601 of the water pump component 600 draws recycled wastewater from the water storage tank 603, pressurizes it through the booster pipe 602, and then delivers it to the inlet pipe 516 of the water distribution component 500; after the water flows into the water distribution channel 503 of the upper guide rail 102, it moves with the sliding seat 301, and its inner guide port 517 smoothly pushes the valve core 507, so that the water passage hole 508 of the valve core 507 is aligned with the water distribution hole 502 of the water distribution valve sleeve 501, and the water flows through the water distribution groove 511 and the water distribution pipe 513 into the inlet seat 406 of the cleaning component 400. On one hand, water flows into the equalizing chamber 405 of the cleaning box 403, and is distributed to the rotary drive chamber 409 through the liquid flow channel 408. The impeller 410 is driven to rotate by impact, and the cleaning brush 404 is driven to rotate through the spline hole 411 and the spline shaft 412. At the same time, the remaining water is sprayed into the brushing area through the rinsing hole 407, realizing the dual cleaning of "rotational friction + water flushing". On the other hand, the water flow inside the equalizing chamber 405 will also push the piston body 414 to drive the spline shaft 412 to move down, so that the cleaning brush 404 presses against the component surface. The reverse elastic force of the spring plate 415 and the water flow thrust form a dynamic balance, stabilizing the contact pressure and ensuring the cleaning effect while avoiding damage to the component.

[0061] Finally, the closed-loop water cycle achieves efficient resource utilization: the wastewater generated during cleaning flows naturally down the surface of the photovoltaic module 900 and flows into the water collection tank 701 of the bottom water collection module 700. After preliminary filtration by the internal filtration structure, it is transported to the water storage tank 603 of the pump water module 600 through the water collection pipe 702 and participates in subsequent cleaning operations, forming a water cycle of "recycling, storage, pressurization, cleaning, and re-recycling", which greatly reduces the consumption of fresh water.

[0062] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A cleaning device for photovoltaic power plant modules, characterized in that: The system includes an upper guide rail assembly (100) hinged to the upper end of a photovoltaic module (900), and a lower guide rail assembly (200) hinged to the lower end of the photovoltaic module (900). Sliding components (300) are mounted on both the upper guide rail assembly (100) and the lower guide rail assembly (200). A cleaning component (400) corresponding to the surface of the photovoltaic module (900) is hinged between the two sliding components (300). A water distribution component (500) connected to the cleaning component (400) is provided between the upper guide rail assembly (100) and the sliding components (300). A water pump assembly (600) communicating with the water distribution component (500) is connected to the upper guide rail assembly (100). A water collection component (700) connected to the water pump assembly (600) is mounted on the lower end of the photovoltaic module (900).

2. The photovoltaic power station module cleaning device according to claim 1, characterized in that: The upper guide rail assembly (100) includes an upper guide rail bracket (101), which is hinged to a first mounting bracket (901) corresponding to the top of the photovoltaic module (900), and an upper guide rail (102) is fixedly mounted on the upper guide rail bracket (101); the lower guide rail assembly (200) includes a lower guide rail bracket (201), which is hinged to a water collection component (700) corresponding to the bottom of the photovoltaic module (900), and a lower guide rail (202) is fixedly mounted on the lower guide rail bracket (201); two sliding components (300) are respectively mounted on the upper guide rail (102) and the lower guide rail (202).

3. The photovoltaic power station module cleaning device according to claim 2, characterized in that: The sliding assembly (300) includes a sliding seat (301), two sliding seats (301) are slidably connected to the upper guide rail (102) and the lower guide rail (202) respectively. On the side of the upper guide rail bracket (101) and the lower guide rail bracket (201) that are far apart from each other, racks (302) are fixedly installed in the length direction of the photovoltaic module (900). A drive motor (303) is fixedly installed on the sliding seat (301) in relation to the rack (302). A drive gear (304) is fixedly installed on the output shaft of the drive motor (303) in relation to the rack (302). The drive gear (304) meshes with the rack (302). A hinge seat (305) is fixedly installed on the side of the two sliding seats (301) that are close to each other. The cleaning assembly (400) is hinged between the two hinge seats (305).

4. The photovoltaic power station module cleaning device according to claim 1, characterized in that: The cleaning assembly (400) includes a mounting plate (401), and hinged lugs (402) are fixedly connected to the upper surface of the mounting plate (401) near its two ends. The mounting plate (401) is hinged to the two sliding assemblies (300) via the hinged lugs (402). A cleaning box (403) is fixedly and sealed on the lower surface of the mounting plate (401), and a plurality of cleaning brushes (404) are mounted on the cleaning box (403) in parallel. The cleaning box (403) is mounted near the mounting plate (401). 1) A pressure equalization chamber (405) is provided on one side of the mounting plate (401), and a water inlet seat (406) communicating with the pressure equalization chamber (405) is fixedly connected to the mounting plate (401). The water inlet seat (406) is sealed and communicated with the water distribution component (500). On the side of the cleaning box (403) away from the mounting plate (401), a flushing hole (407) is provided for each cleaning brush (404). A liquid flow channel (408) communicating with the flushing hole (407) and the pressure equalization chamber (405) is provided inside the cleaning box (403).

5. A photovoltaic power station module cleaning device according to claim 4, characterized in that: On the side of the cleaning box (403) away from the mounting plate (401), a rotary drive cavity (409) is opened for each of the cleaning brushes (404). The liquid flow channel (408) runs through the rotary drive cavity (409) in a centrally symmetrical manner. A drive impeller (410) is rotatably connected inside the rotary drive cavity (409). A spline hole (411) is opened in the center of the drive impeller (410). A spline shaft (412) is installed inside the spline hole (411). The end of the spline shaft (412) away from the pressure equalization cavity (405) is fixedly connected to the cleaning brush (404).

6. A photovoltaic power station module cleaning device according to claim 5, characterized in that: An axial drive cavity (413) is provided inside the cleaning box (403) at one end of the spline shaft (412) near the pressure equalization cavity (405). The axial drive cavity (413) is connected to the pressure equalization cavity (405). A piston body (414) is sealed and movably connected inside the axial drive cavity (413). The piston body (414) is fixedly connected to one end of the spline shaft (412) near the pressure equalization cavity (405). A spring piece (415) is installed inside the axial drive cavity (413) and fitted on the outside of the spline shaft (412). The spring piece (415) abuts between the piston body (414) and the axial drive cavity (413).

7. A photovoltaic power station module cleaning device according to claim 3, characterized in that: The water distribution assembly (500) includes a water distribution valve sleeve (501), on which water distribution holes (502) are axially penetrating both ends. A water distribution channel (503) is provided inside the upper guide rail (102). Several equally spaced valve sleeve mounting holes (504) are provided on the upper guide rail (102) along its length. Each valve sleeve mounting hole (504) is sealed with the water distribution valve sleeve (501). A penetrating hole is provided on the water distribution valve sleeve (501) located inside the water distribution channel (503). A valve core sliding hole (505) is provided through its side wall. A valve core mounting hole (506) is coaxially provided on the upper guide rail (102) corresponding to the valve core sliding hole (505) and passing through its side wall. A valve core (507) is sealed and slidably connected inside the valve core mounting hole (506). The valve core (507) is sealed and slidably connected to the water distribution valve sleeve (501) through the valve core sliding hole (505). A water passage hole (508) is provided on the valve core (507) corresponding to the water distribution hole (502). The outer end of the valve core (507) passes through the upper guide rail. Outside the rail (102), an adjusting plug (509) is sealed to the inner end of the valve core (507) on the upper guide rail (102). A spring (510) is fixedly installed on the adjusting plug (509). The spring (510) abuts against the inner end of the valve core (507) to make the water passage hole (508) and the water distribution hole (502) misaligned. A water distribution groove (511) is opened on the inner side of the sliding seat (301) installed on the upper guide rail (102) corresponding to the water distribution hole (502). A water outlet (512) communicating with the water distribution tank (511) is provided. A water distribution pipe (513) communicating with the water outlet (512) is fixedly and sealed on the sliding seat (301). The water distribution pipe (513) is sealed and communicated with the cleaning assembly (400). A sealing end cap (514) and a connecting end cap (515) are fixedly and sealed on both ends of the upper guide rail (102). A water inlet pipe (516) is sealed and connected to the connecting end cap (515). The water inlet pipe (516) is connected to the water pump assembly (600).

8. A photovoltaic power station module cleaning device according to claim 7, characterized in that: The inner side of the sliding seat (301) mounted on the upper guide rail (102) near its two ends is provided with a guide port (517) corresponding to the outer end of the valve core (507).

9. A photovoltaic power station module cleaning device according to claim 1, characterized in that: The pump assembly (600) includes a water pump (601), the output end of which is fixedly and sealed to a booster pipe (602), which is connected to the water distribution assembly (500); the input end of the water pump (601) is fixedly and sealed to a water storage tank (603), which is connected to the water collection assembly (700).

10. A cleaning device for photovoltaic power plant modules according to any one of claims 1-9, characterized in that: The water collection assembly (700) includes a water collection tank (701), which is fixedly installed on a second mounting bracket (902) corresponding to the bottom of the photovoltaic module (900). A water collection pipe (702) is fixedly and sealed to the bottom of the water collection tank (701). One end of the water collection pipe (702) away from the water collection tank (701) is connected to the water pump assembly (600). An mounting rod (703) is fixedly installed inside the water collection tank (701), and the lower guide rail bracket (201) is hinged to the mounting rod (703).

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