Water-saving type automatic cleaning and protecting system for desert photovoltaic panel

Abstract

The invention relates to the technical field of photovoltaic panel cleaning, and discloses a desert photovoltaic panel water-saving type automatic cleaning protection system which comprises a cleaning robot assembly used for cleaning the surface of a panel body of a photovoltaic panel frame. The cleaning robot assembly comprises a supporting frame which is provided with a guide assembly at the bottom end and used for moving on the surface of the photovoltaic panel frame body, an energy storage battery is connected into the supporting frame, a shielding plate is connected to the portion, at the top end of the energy storage battery, of the supporting frame, and a first roller set is adopted to drive the supporting frame to move on the photovoltaic panel frame body. Compared with the prior art, the device has the advantages that the actual condition of the surface of the plate body of the photovoltaic plate frame can be captured by adopting a camera, different water pressure strengths are adopted for different stains, and the surface of the plate body of the photovoltaic plate frame can be cleaned by adopting the cleaning roller, so that the cleaning efficiency is improved. The reasonability of water liquid distribution is improved, and the waste of water liquid is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic panel cleaning, and specifically to a water-saving automatic cleaning and protection system for desert photovoltaic panels. Background Technique

[0002] Desert photovoltaic power generation, as an extremely innovative and strategic energy development model, refers to the planning and construction of large-scale solar power generation facilities in vast desert areas. From an energy perspective, desert photovoltaic power generation is of great significance. Against the backdrop of the global pursuit of sustainable energy development, traditional fossil fuels are facing problems such as increasing depletion and environmental pollution. The emergence of desert photovoltaic power generation provides a reliable solution. Large-scale solar power generation facilities can convert the abundant solar energy resources in the desert into clean electric energy and continuously transport it to where it is needed, greatly reducing the dependence on traditional fossil fuels and playing a crucial role in alleviating the energy crisis and ensuring energy security.

[0003] In arid desert areas with little rainfall, traditional cleaning methods have high water consumption (3 - 5 L / m for single cleaning 2 ), serious secondary pollution (sewage reuse rate < 30%), and low automation level (manual cleaning efficiency ≤ 60 m 2 / h), which severely restricts the sustainable development of photovoltaic power stations. Therefore, desert photovoltaic power generation faces two core challenges: the decline in the efficiency of photovoltaic panels due to sand and dust accumulation and the huge water consumption of traditional high-pressure water washing cleaning methods. Thus, there is an urgent need for a water-saving automatic cleaning and protection system for desert photovoltaic panels to solve the above problems. Summary of the Invention

[0004] In order to overcome the above technical problems, the purpose of the present invention is to provide a water-saving automatic cleaning and protection system for desert photovoltaic panels to solve the problems mentioned in the above background technique, namely, in arid desert areas with little rainfall, traditional cleaning methods have high water consumption (3 - 5 L / m for single cleaning 2 ), serious secondary pollution (sewage reuse rate < 30%), and low automation level (manual cleaning efficiency ≤ 60 m 2 / h), which severely restricts the sustainable development of photovoltaic power stations. Therefore, desert photovoltaic power generation faces two core challenges: the decline in the efficiency of photovoltaic panels due to sand and dust accumulation and the huge water consumption of traditional high-pressure water washing cleaning methods.

[0005] The present invention provides the following technical solution: a water-saving automatic cleaning and protection system for desert photovoltaic panels, comprising a cleaning robot component, the cleaning robot component is used to clean the surface of the photovoltaic panel frame, the cleaning robot component comprises a support frame with a guide component at the bottom end, which is used to move on the surface of the photovoltaic panel frame, the support frame is internally connected with an energy storage battery for power supply, and the support frame at the top of the energy storage battery is connected with a shielding plate for sunshade and dustproof, the cleaning robot component also comprises a cleaning component, and the cleaning component comprises a support frame disposed on the front side of the support frame, the surface A mounting frame for evenly distributing high-pressure atomizing nozzles, wherein a water storage tank having a water level sensor is connected to the interior of the supporting frame, and the water storage tank is connected to the high-pressure atomizing nozzle by a cleaning water pump and a water pipe for supplying water, and a cleaning roller powered by a motor is sleeved on the mounting frame at the bottom of the high-pressure atomizing nozzle by a rotating shaft, and is used to clean the surface of the photovoltaic panel frame, and a camera electrically connected to the cleaning water pump is also connected to the mounting frame, and the cleaning robot assembly also includes a dust suction assembly shielding the mounting frame and a wiper assembly disposed on the non-advancing side of the supporting frame;

[0006] It also includes a water recycling mechanism, placed near the photovoltaic panel rack;

[0007] It also includes a moving mechanism to carry the cleaning robot components.

[0008] To implement the above technical solution, a first roller group is used to drive the support frame to move on the photovoltaic panel frame, and the surface of the photovoltaic panel frame is double-cleaned by flushing with a high-pressure atomizing nozzle and rotating a cleaning roller. Compared with the prior art, the device uses a camera to capture the actual situation of the surface of the photovoltaic panel frame, and uses different water pressure intensities for different stains, thereby increasing the rationality of water distribution and reducing water waste.

[0009] As a further improvement of the present invention, the guide assembly includes a first roller group and a second roller group, both of which are two in number and are symmetrically placed at the bottom end of the support frame and in contact with the edge of the photovoltaic panel frame. The first roller group or the second roller group is powered by a motor and a belt. Both ends of the first roller group and the second roller group are connected with flexible wheels, and the spacing between the upper and lower flexible wheels is equal to the thickness of the photovoltaic panel frame, and is used to clamp and limit the upper and lower edges of the photovoltaic panel frame.

[0010] The implementation of the above technical solution enables the support frame to be clamped to the edge of the photovoltaic panel frame, thereby improving the guidance and stability of the support frame movement.

[0011] As a further improvement of the present invention, the dust suction assembly includes a shielding cover that completely shields the mounting frame, the high-pressure atomizing nozzle, and the cleaning roller, and a wind guide cylinder connected to the surface of the shielding cover and communicating with the inside of the shielding cover is embedded with a centrifugal air pump on the wind guide cylinder for sucking out the air flow inside the shielding cover, and the opening of the wind guide cylinder is not facing the plate body of the photovoltaic panel frame.

[0012] Implementing the above technical solution, the splashed dust is sucked and discharged to the outside of the photovoltaic panel frame to avoid the phenomenon of secondary adhesion.

[0013] As a further improvement of the present invention, the wiper assembly includes an auxiliary frame connected to the non-forward side of the support frame, and a wiper strip is movably sleeved at the end of the auxiliary frame by a rotating shaft. The wiper strip is a rubber or resin member and is in contact with the plate body of the photovoltaic panel frame. A folding hinge frame is connected between the auxiliary frame and the wiper strip by a rotating shaft.

[0014] Implementing the above technical solution, the wiper strip moves continuously with the support frame and is located at the end of the support frame, so as to perform a wiper operation on the plate body of the photovoltaic panel frame after cleaning, reduce the water liquid adhesion on the surface of the photovoltaic panel frame plate body, and contribute to the rapid drying of the surface of the photovoltaic panel frame plate body.

[0015] As a further improvement of the present invention, the recycled water mechanism includes a recycling frame with a recycling water tank inside and placed on the ground near the photovoltaic panel frame. A funnel sleeve is connected to the recycling frame, and the bottom end of the funnel sleeve is embedded in the recycling water tank and communicates with the inside of the recycling water tank. The funnel sleeve is located below the lowest point of the plate body of the photovoltaic panel frame, and the length of the funnel sleeve is greater than the length of the plate body of the photovoltaic panel frame for recycling sewage.

[0016] Implementing the above technical solution, with the collection and guiding functions of the funnel sleeve, the sewage can be introduced into the recycling water tank for temporary storage and reserved for the next cleaning use, reducing the consumption of water liquid.

[0017] As a further improvement of the present invention, a filter screen plate is arranged inside the funnel sleeve, and the filter screen plate is a 200-mesh stainless steel member. A sand filtering cylinder is detachably installed inside the pipe body of the funnel sleeve, and the sand filtering cylinder is an activated carbon or soft cloth member for blocking sand.

[0018] Implementing the above technical solution, the filter screen plate is combined with the sand filtering cylinder to filter the water liquid and reduce the sand content in the recycling water tank.

[0019] As a further improvement of the present invention, the water recovery mechanism also includes a recovery bucket connected to the support frame by an electric shaft or an electric cylinder and used for temporary storage of water. A reflux water pump is connected to the interior of the support frame, and the water inlet and outlet ends of the reflux water pump are respectively connected to the recovery bucket and the water storage tank body for water reflux. A water supply pump is connected to the recovery frame, and the water supply pump is connected to the recovery water tank by a pipeline, and the output end of the water supply pump is connected to an inverted J-shaped water pipe for supplying water to the inside of the recovery bucket. A photosensitive switch is connected to the recovery frame and electrically connected to the water supply pump for determining the position of the recovery bucket.

[0020] To implement the above technical solution, a water supply pump is used to extract the temporarily stored water in the recovery tank, and a repositionable recovery bucket is used to temporarily receive the water, and a reflux pump is used to pump water, so that the water can flow back into the water storage tank to replenish the water in the water storage tank.

[0021] As a further improvement of the present invention, the moving mechanism includes an electric seat for moving on sand, the top of the electric seat is connected to a scissors lift for height adjustment and a Y-shaped diagonal brace for angle adjustment, and the scissors lift and the Y-shaped diagonal brace are both powered by cylinders, the top of the Y-shaped diagonal brace is connected to a transfer plate, and the thickness of the transfer plate is consistent with the thickness of the photovoltaic panel frame.

[0022] To implement the above technical solution, a scissor lift can be used to adjust the height of the transfer plate and a Y-shaped diagonal support can be used to adjust the angle of the transfer plate, so that the transfer plate can fit the photovoltaic panel frame, making it easier for the cleaning robot assembly to move to the photovoltaic panel frame.

[0023] As a further improvement to the present invention, the drive shafts on both sides of the electric seat are connected with track wheels.

[0024] The implementation of the above technical solution makes it easier for the electric vehicle seat to move in the desert, making it less likely to get stuck and improving the stability of its movement.

[0025] As a further improvement of the present invention, a positioning rod is connected to the outer side of the Y-shaped diagonal support frame or the bottom end of the transfer plate, and the number of the positioning rods is at least two. When the positioning rod is attached to the plate body of the photovoltaic panel frame, the surface of the transfer plate is flush with the surface of the plate body of the photovoltaic panel frame.

[0026] The above technical solution is implemented to ensure that the transfer plate and the photovoltaic panel frame are stably aligned, making the travel of the cleaning robot component more guided and less likely to fall accidentally.

[0027] Technical effects and advantages of the present invention:

[0028] 1. The present invention uses a first roller set to drive a support frame to move on a photovoltaic panel rack plate body, and cooperates with the flushing of a high-pressure atomizing nozzle and the rotation of a cleaning roller to perform double cleaning on the surface of the photovoltaic panel rack plate body.

[0029] 2. Compared with the prior art, the present device uses a camera to capture the actual situation on the surface of the photovoltaic panel rack plate body, adopts different water pressure intensities for different stains, increases the rationality of water liquid distribution, and reduces the waste of water liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is a top-down three-dimensional schematic diagram of the overall structure of the present invention.

[0032] Figure 2 It is a top-down three-dimensional schematic diagram of the cleaning robot assembly structure in an exploded state of the present invention.

[0033] Figure 3 It is a top-down three-dimensional schematic diagram of the cleaning assembly of the cleaning robot assembly structure of the present invention.

[0034] Figure 4 It is a bottom-up three-dimensional schematic diagram of the guiding assembly of the cleaning robot assembly structure of the present invention.

[0035] Figure 5 It is a top-down three-dimensional schematic diagram of the dust suction assembly structure of the cleaning robot assembly in an exploded state of the present invention.

[0036] Figure 6 It is a top-down three-dimensional schematic diagram of the three structures of the water scraping assembly of the cleaning robot assembly structure of the present invention.

[0037] Figure 7 It is a top-down three-dimensional schematic diagram of the recycling water mechanism structure in an exploded state of the present invention.

[0038] Figure 8 It is a top-down three-dimensional schematic diagram of the moving mechanism structure in an exploded state of the present invention.

[0039] Figure 9 It is a schematic diagram of the water liquid flow path of the present invention.

[0040] Among them, the names represented by the part numbers in the above schematic diagrams are as follows:

[0041] A, Photovoltaic panel frame; 100, Cleaning robot assembly; 110, Support frame; 111, Energy storage battery; 112, Shading board; 113, Water storage tank body; 114, Mounting rack; 115, Cleaning roller; 116, High-pressure atomizing nozzle; 117, Cleaning water pump; 118, First roller group; 119, Second roller group; 120, Flexible wheel; 121, Shielding cover; 122, Air guide tube; 123, Centrifugal air pump; 124, Auxiliary frame; 125, Wiper strip; 126, Fold-angle hinge frame; 200, Recycled water mechanism; 210, Recycling rack; 211, Recycling water tank; 212, Funnel sleeve; 213, Filter screen plate; 214, Sand filter cylinder; 215, Water supply pump; 216, Recycling hopper; 217, Return water pump; 300, Moving mechanism; 310, Electric vehicle seat; 311, Crawler wheel; 312, Scissor lift frame; 313, Y-shaped diagonal brace; 314, Transfer board; 315, Positioning rod Detailed implementation mode

[0042] The following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the present invention.

[0043] Embodiment 1:

[0044] Referring to the accompanying drawings in the specification Figures 1-6 , the present invention provides a water-saving automatic cleaning and protection system for desert photovoltaic panels, including a cleaning robot assembly 100, the cleaning robot assembly 100;

[0045] The cleaning robot assembly 100 is the core execution unit of the entire cleaning and protection system, undertaking the key task of cleaning the surface of the plate body of the photovoltaic panel frame A.

[0046] The support frame 110 serves as the basic structure of the cleaning robot assembly 100, and its bottom is equipped with a guiding component, which enables it to move flexibly on the surface of the plate body of the photovoltaic panel frame A. The energy storage battery 111 is connected inside the support frame 110, and the energy storage battery 111 provides stable and reliable energy support for the operation of the entire cleaning robot assembly 100. On top of the energy storage battery 111, the shielding board 112 is connected to the support frame 110. The shielding board 112 plays an important role in shading and dust prevention. In an environment such as a desert where the sun is strong and sand and dust are raging, it can effectively block direct sunlight, reduce the loss of equipment caused by high temperature, and at the same time prevent sand and dust from entering the equipment interior, extending the service life of the equipment.

[0047] The cleaning component is a key part for realizing the cleaning function of the photovoltaic panel. It includes a mounting frame 114, which is placed on the forward side of the support frame 110. The surface of the mounting frame 114 is evenly distributed with high-pressure atomizing nozzles 116, and these high-pressure atomizing nozzles 116 can spray the liquid onto the surface of the photovoltaic panel in a specific manner. Inside the support frame 110 is connected a water storage tank body 113 equipped with a water level sensor. The water storage tank body 113 is connected to the high-pressure atomizing nozzles 116 through a cleaning water pump 117 and a series of water pipes, so as to achieve precise liquid supply. The cleaning water pump 117 adopts an adjustable pressure water pump with a pressure of 0.3 - 0.5 Mpa, and this adjustability enables the system to flexibly adjust the liquid pressure according to different cleaning requirements. The high-pressure atomizing nozzles 116 are equipped with fan-shaped atomizing nozzles with a spraying angle of 60°, and the atomizing design enables the single spraying coverage area to reach 0.8m 2 , which can efficiently cover the surface of the photovoltaic panel.

[0048] At the bottom end of the high-pressure atomizing nozzles 116, a cleaning roller 115 is installed on the mounting frame 114 in a way of being sleeved through a rotating shaft, and the cleaning roller 115 is powered by a motor. When the system conducts the flushing operation, the motor of the cleaning roller 115 starts simultaneously, driving the cleaning roller 115 to conduct a preliminary cleaning on the surface of the plate body of the photovoltaic panel frame A at a rotational speed of 200 rpm of the water recovery mechanism. A camera electrically connected to the cleaning water pump 117 is also connected to the mounting frame 114, and this camera can capture the types of stains on the surface of the plate body of the photovoltaic panel frame A in real time. Based on the information fed back by the camera, the cleaning water pump 117 can intelligently adjust the working mode. For example, its 0.3 MPa low-pressure mode is used for conventional floating dust flushing, and the water consumption in this mode is reduced by 40% compared with the traditional high-pressure water gun; while the 0.5 MPa high-pressure mode can be used to peel off stubborn stains with a thickness of 0.2 mm, such as bird droppings, resins, etc.

[0049] The function of the dust suction component is to effectively collect the raised dust during the cleaning process and keep the working environment clean. It includes a shielding cover 121 that can completely shield the mounting frame 114, the high-pressure atomizing nozzles 116, and the cleaning roller 115. The surface of the shielding cover 121 is connected with an air guide cylinder 122 that penetrates internally, and a centrifugal air pump 123 is embedded on the air guide cylinder 122. Under the dual action of flushing and brushing, the accumulated dust on the surface of the plate body of the photovoltaic panel frame A is flushed up. At this time, the centrifugal air pump 123 starts, sucking the flushed-up dust out of the shielding cover 121, preventing the dust from adhering to the surface of the photovoltaic panel again and improving the cleaning effect. It should be noted that the opening of the air guide cylinder 122 is not oriented towards the plate body of the photovoltaic panel frame A, and such a design can prevent unnecessary damage or interference to the plate body surface during the dust suction process.

[0050] The wiper assembly is used to clean the excess water on the surface of the photovoltaic panel, ensuring that the photovoltaic panel can quickly return to a dry state and improving the power generation efficiency. It includes an auxiliary frame 124 connected to the non-advancing side of the support frame 110. At the end of the auxiliary frame 124, a wiper strip 125 is movably sleeved by a rotating shaft. The wiper strip 125 is made of a soft and highly elastic material such as rubber or resin, and can closely fit the surface of the plate body of the photovoltaic panel frame A. A folding hinge frame 126 is connected between the auxiliary frame 124 and the wiper strip 125 through a rotating shaft. The folding hinge frame 126 can flexibly adjust the contact angle and pressure between the wiper strip 125 and the surface of the photovoltaic panel to ensure the best wiper effect.

[0051] The guiding assembly ensures the stable movement of the support frame 110 on the surface of the plate body of the photovoltaic panel frame A. It consists of a first roller group 118 and a second roller group 119, both of which are two in number. These two groups of rollers are symmetrically placed at the bottom end of the support frame 110 and are closely attached to the edge of the plate body of the photovoltaic panel frame A. The first roller group 118 or the second roller group 119 is powered by a motor and a belt to precisely control the moving direction and speed of the support frame 110. Flexible wheels 120 are connected to both ends of the first roller group 118 and the second roller group 119. The distance between the upper and lower flexible wheels 120 is equal to the thickness of the plate body of the photovoltaic panel frame A. This design can reliably clamp and limit the upper and lower edges of the plate body of the photovoltaic panel frame A to prevent the support frame 110 from shifting or shaking during the movement, ensuring the stability and accuracy of the cleaning work.

[0052] During preparation, the moving mechanism 300 carries the cleaning robot assembly 100 to move until it is aligned with the plate body of the photovoltaic panel frame A. At this time, the motor of the first roller group 118 starts and drives the first roller group 118 to roll, so that the first roller group 118 gradually crawls onto the plate body of the photovoltaic panel frame A. At the same time, the second roller group 119 will position the upper and lower ends of the plate body of the photovoltaic panel frame A. When the cleaning robot assembly 100 moves onto the plate body of the photovoltaic panel frame A, the cleaning water pump 117 starts to work, supplying the water in the water storage tank body 113 to the high-pressure atomizing nozzle 116 to form a water spray on the surface of the plate body of the photovoltaic panel frame A. Among them, the cleaning water pump 117 is an adjustable pressure water pump with a pressure of 0.3 - 0.5 Mpa. The high-pressure atomizing nozzle 116 is equipped with a fan-shaped atomizing nozzle with a spraying angle of 60°. At the same time, the camera can capture the type of stains on the surface of the plate body of the photovoltaic panel frame A. The 0.3 MPa low-pressure mode of the cleaning water pump 117 is used for conventional floating dust flushing, and its water consumption is reduced by 40% compared with the traditional high-pressure water gun. At the same time, the 0.5 MPa high-pressure mode of the cleaning water pump 117 can peel off stubborn stains with a thickness of 0.2 mm, such as bird droppings and resin. The atomizing design enables the single spray coverage area to reach 0.8 m 2; During the flushing work, the motor of the cleaning roller 115 is started to supply energy at the same time, driving the cleaning roller 115 to perform preliminary cleaning on the board surface of the photovoltaic panel frame A at a speed of 200rpm of the water recovery mechanism; under the dual effects of flushing and brushing, the accumulated dust on the board surface of the photovoltaic panel frame A is flushed up, and at this time the centrifugal air pump 123 is started to suck the flushed dust out of the shielding cover 121, and finally the wiper strip 125 is attached to the board surface of the photovoltaic panel frame A to scrape off the excess water; after the overall cleaning is completed, the cleaning robot assembly 100 returns to the moving mechanism 300, and then moves to another photovoltaic panel frame A to perform the same cleaning operation, and continues in this way to complete the cleaning of all the panels in the photovoltaic panel frame A matrix.

[0053] Embodiment 2:

[0054] Refer to the attached drawings in the specification Figure 7 and 9 The difference between this embodiment and the above embodiment is that a recovery water tank 211 is provided inside the water recovery mechanism 200, which is placed on the ground near the photovoltaic panel rack A, and the overall structure is stable. The recovery rack 210, as an important supporting part of the recovery system, is connected to the funnel sleeve 212. The bottom end of the funnel sleeve 212 is precisely embedded in the recovery water tank 211, realizing a through connection with the inside of the recovery water tank 211. This connection method ensures that sewage can smoothly flow from the funnel sleeve 212 into the recovery water tank 211 for storage.

[0055] The position design of the funnel sleeve 212 is very clever, it is located below the lowest point of the photovoltaic panel frame A, and its length is greater than the length of the photovoltaic panel frame A. Such a layout can maximize the effective reception of sewage that flows down naturally and is scraped by the wiper strip 125, avoid sewage leakage, and improve recovery efficiency.

[0056] A filter plate 213 and a sand filter cartridge 214 are provided inside the funnel sleeve 212 for sewage filtration. The filter plate 213 is made of a 200-mesh stainless steel component. The filter of this material and specification can effectively intercept larger granular impurities in the sewage, such as leaves, dust lumps, etc., to prevent them from entering the recovery water tank 211 and causing blockage or affecting the subsequent water quality. The sand filter cartridge 214 is detachably installed inside the tube body of the funnel sleeve 212, and it can be made of activated carbon or soft cloth. Activated carbon has a strong adsorption performance, which can not only block sand, but also absorb odors and some tiny organic pollutants in sewage; the soft cloth can further intercept fine sand and other suspended matter through physical filtration, ensuring that the water quality entering the recovery water tank 211 is relatively clear.

[0057] The recycled water mechanism 200 further includes a recycling hopper 216, which is connected to the support frame 110 by an electric shaft or an electric cylinder and is mainly used for temporarily storing water liquid. The support frame 110 provides a stable support structure for the entire mechanism, ensuring that each component can operate normally;

[0058] Inside the support frame 110, a return water pump 217 is connected. The water inlet end of the return water pump 217 is closely connected to the recycling hopper 216, and the water outlet end is connected to the water storage tank body 113. This connection method enables the return water pump 217 to pump the water liquid in the recycling hopper 216 back to the water storage tank body 113 during the operation of the system, realizing the recycling of water liquid and meeting the continuous demand of the equipment for water resources;

[0059] A water supply pump 215 is connected to the recycling rack 210. The water supply pump 215 is connected to the recycling water tank 211 through a pipeline to ensure that the filtered sewage stored in the recycling water tank 211 can be pumped. The output end of the water supply pump 215 is connected to a water pipe in an inverted J shape. This unique design of the water pipe shape helps to achieve a relatively uniform and stable water flow supply when supplying water to the inside of the recycling hopper 216;

[0060] In addition, a light sensor switch electrically connected to the water supply pump 215 is also connected to the recycling rack 210. The function of this light sensor switch is very crucial. It can accurately determine the position of the recycling hopper 216 through the optical principle to ensure that the water supply pump 215 can be started in time for water supply operation when the recycling hopper 216 moves to a suitable position.

[0061] During the daily operation process, the funnel sleeve 212 is always in the set position below the A plate body of the photovoltaic panel frame. When sewage naturally flows down the surface of the photovoltaic panel or the wiper strip 125 scrapes sewage during the cleaning process, the sewage will flow along the plate body to the funnel sleeve 212. After the sewage enters the funnel sleeve 212, it will first pass through a two-hundred-mesh stainless steel filter screen plate 213. The filter screen plate 213 is like a precise sieve, intercepting larger impurities in the sewage and only allowing smaller particles of substances and liquids to pass through. Then, the sewage will continue to pass through the filter sand cylinder 214. Whether the filter sand cylinder is made of activated carbon or soft cloth, it can further block and filter the sand and other tiny particles in the sewage. After these two filtering processes, the relatively clean filtered water enters the recycling water tank 211 for storage, waiting for subsequent treatment and reuse.

[0062] When the cleaning robot assembly 100 is ready to start working each time, the recovery bucket 216 starts to move under the drive of the electric shaft or electric cylinder. As the recovery bucket 216 moves, the photosensitive switch continuously monitors its position information. When the recovery bucket 216 moves to the bottom of the water supply pump 215 pipe body, the photosensitive switch detects that the recovery bucket 216 has been accurately aligned, and at this time, a signal is sent to the water supply pump 215, and the water supply pump 215 is started immediately. The water supply pump 215 starts to extract the filtered sewage stored in the recovery water tank 211, and adds the water liquid to the recovery bucket 216 through the inverted J-shaped water pipe.

[0063] At the same time, the return water pump 217 is also started synchronously. The return water pump 217 quickly draws back the water in the recovery bucket 216 to replenish it into the water storage tank 113. In this process, the liquid level in the water storage tank 113 gradually rises. When the liquid level touches the water level sensor, it means that the water volume in the water storage tank 113 has reached the set standard. At this time, the system automatically controls the recovery bucket 216 to return to the initial position where it will not collide with the recovery rack 210, and the water supply pump 215 stops working. At this point, the entire recovery water replenishment work is successfully completed, providing sufficient water resources for the subsequent work of the cleaning robot assembly 100.

[0064] Embodiment three:

[0065] Refer to the attached drawings in the specification Figure 8 The difference between this embodiment and the above embodiment is that the moving mechanism 300 plays a key role in enabling the cleaning robot assembly 100 to accurately reach and dock with the photovoltaic panel frame A. It is composed of an electric seat 310, a scissor lift frame 312, a Y-shaped diagonal support frame 313, a transfer plate 314 and a positioning rod 315.

[0066] The electric seat 310 is used for moving on sandy land. The internal guide module plans the route and drives the track wheel 311 to travel smoothly. Its top is connected to the scissor lift 312 and the Y-shaped diagonal support 313. The scissor lift 312 is powered by a cylinder to achieve height adjustment, driving the Y-shaped diagonal support 313 and the transfer plate 314 to rise and fall. The Y-shaped diagonal support 313 is also powered by a cylinder to change the inclination angle of the transfer plate 314. The thickness of the transfer plate 314 is consistent with the body of the photovoltaic panel frame A, which is convenient for the transition of the robot components.

[0067] There are at least two positioning rods 315 connected to the outside of the Y-shaped diagonal support frame 313 or the bottom of the transfer plate 314. When working, the electric seat 310 moves toward the vicinity of the photovoltaic panel frame A, the scissor lift frame 312 rises, and the Y-shaped diagonal support frame 313 adjusts the angle, so that the positioning rods 315 are close to the bottom of the photovoltaic panel frame A. At this time, the height and angle of the transfer plate 314 are consistent with the photovoltaic panel frame A, creating conditions for the transfer of the cleaning robot assembly 100.

[0068] When the system starts to work, first, the electric vehicle seat 310 exerts its moving function. The electric vehicle seat 310 drives the crawler wheels 311 on both sides to rotate according to the route set by the guiding module inside it, and moves smoothly on the sand towards the direction of the photovoltaic panel frame A. After the electric vehicle seat 310 moves near the photovoltaic panel frame A, it enters the position adjustment stage.

[0069] At this time, the scissor lift 312 starts to rise under the drive of the cylinder. The rising action of the scissor lift 312 drives the Y-shaped strut 313 and the transfer plate 314 to rise together, gradually approaching the height of the plate body of the photovoltaic panel frame A. During the rising process, the Y-shaped strut 313 is also activated under the action of the cylinder and starts to change its own angle, thereby adjusting the tilt angle of the transfer plate 314.

[0070] With the coordinated actions of the scissor lift 312 and the Y-shaped strut 313, the positioning rods 315 gradually approach the plate body of the photovoltaic panel frame A. When all the positioning rods 315 are closely attached to the lower side of the plate body of the photovoltaic panel frame A, it means that the height and tilt angle of the transfer plate 314 are completely matched with the plate body of the photovoltaic panel frame A. At this time, the height and tilt angle of the transfer plate 314 are consistent with the plate body of the photovoltaic panel frame A, creating ideal conditions for the cleaning robot assembly 100 to move from the transfer plate 314 to the plate body of the photovoltaic panel frame A, and then the cleaning robot assembly 100 can smoothly carry out cleaning work on the plate body of the photovoltaic panel frame A.

[0071] In the description of this specification, the descriptions of reference terms: an embodiment, an example, a specific example, etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

Claims

1. A water-saving automatic cleaning and protection system for desert photovoltaic panels, comprising a cleaning robot assembly (100), wherein the cleaning robot assembly (100) is used to clean the surface of a photovoltaic panel frame (A), and is characterized in that: The cleaning robot assembly (100) comprises a support frame (110) with a guide assembly at the bottom end for moving on the surface of a photovoltaic panel frame (A); an energy storage battery (111) for power supply is connected inside the support frame (110); and a shielding plate (112) for sunshade and dust protection is connected to the support frame (110) at the top of the energy storage battery (111); the cleaning robot assembly (100) further comprises a cleaning assembly, and the cleaning assembly comprises a mounting frame (114) disposed on the forward side of the support frame (110) and having high-pressure atomizing nozzles (116) evenly distributed on the surface; and the support frame (110) is connected inside with a water level sensor. A water storage tank (113) of the sensor, and the water storage tank (113) is connected to a high-pressure atomizing nozzle (116) by a cleaning water pump (117) and a water pipe for water supply, and a cleaning roller (115) is sleeved with a rotating shaft and powered by a motor on the mounting frame (114) at the bottom end of the high-pressure atomizing nozzle (116) for cleaning the surface of the photovoltaic panel frame (A), and a camera is also connected to the mounting frame (114) and electrically connected to the cleaning water pump (117), and the cleaning robot component (100) also includes a dust suction component that shields the mounting frame (114) and a wiper component disposed on the non-advancing side of the support frame (110); It also includes a water recovery mechanism (200) which is placed near the photovoltaic panel frame (A); It also includes a moving mechanism (300) for supporting the cleaning robot assembly (100).

2. The water-saving automatic cleaning and protection system for desert photovoltaic panels according to claim 1 is characterized by: The guide assembly comprises a first roller group (118) and a second roller group (119), both of which are two in number and are symmetrically arranged at the bottom end of the support frame (110) and in contact with the edge of the photovoltaic panel frame (A). The first roller group (118) or the second roller group (119) is powered by a motor in combination with a belt. Both ends of the first roller group (118) and the second roller group (119) are connected with flexible wheels (120), and the spacing between the upper and lower flexible wheels (120) is equal to the thickness of the photovoltaic panel frame (A) so as to clamp and limit the upper and lower edges of the photovoltaic panel frame (A).

3. The water-saving automatic cleaning and protection system for desert photovoltaic panels according to claim 2 is characterized by: The dust suction assembly comprises a shielding cover (121) that completely shields the mounting frame (114), the high-pressure atomizing nozzle (116) and the cleaning roller (115), and the surface of the shielding cover (121) is connected to an air guide tube (122) that penetrates the interior of the shielding cover (121), and a centrifugal air pump (123) is embedded in the air guide tube (122) for sucking out the air flow inside the shielding cover (121), and the opening of the air guide tube (122) is not facing the panel body of the photovoltaic panel frame (A).

4. The water-saving automatic cleaning and protection system for desert photovoltaic panels according to claim 3 is characterized by: The wiper assembly comprises an auxiliary frame (124) connected to the non-advancing side of the support frame (110), and a wiper strip (125) is movably sleeved at the end of the auxiliary frame (124) by a rotating shaft, and the wiper strip (125) is a rubber or resin component and is attached to the plate body of the photovoltaic panel frame (A), and an angle hinge frame (126) is connected between the auxiliary frame (124) and the wiper strip (125) by a rotating shaft.

5. The water-saving automatic cleaning and protection system for desert photovoltaic panels according to claim 1 is characterized by: The water recovery mechanism (200) comprises a recovery frame (210) with a recovery water tank (211) inside and placed on the ground near the photovoltaic panel frame (A); the recovery frame (210) is connected to a funnel sleeve (212), and the bottom end of the funnel sleeve (212) is embedded in the recovery water tank (211) and communicates with the inside of the recovery water tank (211); the funnel sleeve (212) is located below the lowest point of the photovoltaic panel frame (A) plate body, and the length of the funnel sleeve (212) is greater than the length of the photovoltaic panel frame (A) plate body, and is used for recovering sewage.

6. The water-saving automatic cleaning and protection system for desert photovoltaic panels according to claim 5 is characterized by: A filter plate (213) is arranged inside the funnel sleeve (212), and the filter plate (213) is a 200-mesh stainless steel component. A sand filter cartridge (214) is detachably installed inside the tube body of the funnel sleeve (212), and the sand filter cartridge (214) is an activated carbon or soft cloth component to block sand.

7. The water-saving automatic cleaning and protection system for desert photovoltaic panels according to claim 6 is characterized by: The water recovery mechanism (200) further comprises a recovery bucket (216) connected to the support frame (110) by an electric shaft or an electric cylinder and used for temporary storage of water liquid. A return water pump (217) is connected to the interior of the support frame (110), and the water inlet end and the water outlet end of the return water pump (217) are respectively connected to the recovery bucket (216) and the water storage tank (113) for water liquid reflux. A water supply pump (215) is connected to the recovery frame (210), and the water supply pump (215) is connected to the recovery water tank (211) by a pipeline, and the output end of the water supply pump (215) is connected to an inverted J-shaped water pipe for supplying water to the interior of the recovery bucket (216). A photosensitive switch is connected to the recovery frame (210) and is electrically connected to the water supply pump (215) for determining the position of the recovery bucket (216).

8. The water-saving automatic cleaning and protection system for desert photovoltaic panels according to claim 1 is characterized by: The moving mechanism (300) comprises an electric seat (310) for moving on sand, the top end of the electric seat (310) is connected to a scissor lift (312) for height adjustment and a Y-shaped diagonal support (313) for angle adjustment, and both the scissor lift (312) and the Y-shaped diagonal support (313) are powered by a cylinder, the top end of the Y-shaped diagonal support (313) is connected to a transfer plate (314), and the thickness of the transfer plate (314) is consistent with the thickness of the photovoltaic panel frame (A).

9. The water-saving automatic cleaning and protection system for desert photovoltaic panels according to claim 8, characterized in that: The driving shafts on both sides of the electric vehicle seat (310) are connected to track wheels (311).

10. The water-saving automatic cleaning and protection system for desert photovoltaic panels according to claim 9, characterized in that: The outer side of the Y-shaped diagonal support frame (313) or the bottom end of the transfer plate (314) is connected with a positioning rod (315), and the number of the positioning rods (315) is at least two. When the positioning rods (315) are in contact with the plate body of the photovoltaic panel frame (A), the surface of the transfer plate (314) is flush with the surface of the plate body of the photovoltaic panel frame (A).

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