Cleaning device for photovoltaic panel assembly

Abstract

The invention relates to the technical field of photovoltaic systems, in particular to a photovoltaic panel assembly cleaning device which comprises a photovoltaic panel, a supporting frame and a moving plate, the photovoltaic panel is installed on the supporting frame, embedded plates are arranged on the two sides of the supporting frame, moving blocks are arranged at the two ends of the moving plate respectively, and the two moving blocks are arranged in the two embedded plates in a sliding mode respectively. A plurality of brush heads are arranged on the moving plate, sealing plates are arranged on the two sides of the moving plate respectively, a driver for driving the moving plate to move is arranged on the supporting frame, and the sealing plates, the moving plate and the photovoltaic panel form a cavity; wherein one moving block is provided with a drain hole, the water collecting tank is arranged below the photovoltaic panel and used for collecting liquid flowing out of the drain hole, and the technical problem that separated dirt can diffuse to an adjacent cleaned area along with flushing water flow is solved.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic systems, and in particular to a cleaning device for photovoltaic panel components. Background Art

[0002] The cleaning device for photovoltaic modules is a device specially designed to clean and maintain the surface of solar panels. The main purpose of this device is to remove impurities such as dust, dirt, leaves, bird droppings, etc. accumulated on photovoltaic panels to ensure that solar panels can efficiently absorb sunlight and convert it into electricity.

[0003] When dealing with stubborn stains such as bird droppings on the surface of photovoltaic panels, existing photovoltaic module cleaning devices generally use a cleaning method that uses flexible bristles to rotate and flush while spraying clean water. However, this cleaning method has significant technical defects: when the rotating bristles are used to remove stains such as bird droppings, the separated dirt will spread to the adjacent cleaned area with the flushing water flow, resulting in uneven cleaning effect and secondary pollution; at the same time, in the process of repeated contact with sticky stains, the fiber surface of the bristles will inevitably adhere to dirt, which not only reduces the cleaning efficiency, but also causes cross-contamination in the subsequent cleaning process, affecting the overall cleaning quality. Summary of the invention

[0004] The object of the present invention is to provide a cleaning device for a photovoltaic panel assembly, so as to solve the technical problem that separated dirt will spread to adjacent areas that have been cleaned along with the flushing water flow.

[0005] The present invention is achieved through the following technical solutions:

[0006] A cleaning device for a photovoltaic panel assembly comprises a photovoltaic panel, a support frame and a movable panel, wherein the photovoltaic panel is mounted on the support frame, embedded panels are arranged on both sides of the support frame, movable blocks are arranged at both ends of the movable panel, two movable blocks are slidably arranged in the two embedded panels, a plurality of brush heads are arranged on the movable panel, sealing panels are arranged on both sides of the movable panel, a driver for driving the movable panel to move is arranged on the support frame, and a cavity is formed by the sealing panel, the movable panel and the photovoltaic panel; a drainage hole is arranged on one of the movable blocks, and a water collecting trough is arranged below the photovoltaic panel for collecting liquid flowing out of the drainage hole.

[0007] Furthermore, two trigger assemblies are provided on one side of the movable plate close to the photovoltaic panel, and the trigger assembly includes a first trigger plate and a second trigger plate, the first trigger plate and the second trigger plate are connected, and the first trigger plate is arranged on the movable plate through a torsion spring, and in an initial state, the relative distance between the two first trigger plates is smaller than the relative distance between the two second trigger plates; a nozzle is provided on the movable plate, and the nozzle acts on the two first trigger plates by spraying liquid, so that the two first trigger plates move away from each other, and at this time, the two second trigger plates move relatively close to each other, and the two second trigger plates move relatively close to each other to trigger the closing assembly, and the closing assembly is used to close the drainage hole.

[0008] Furthermore, the closing component includes two grooves connected to the outside world on the moving block, the grooves are symmetrically arranged with the drain hole as the center, a water blocking plate is arranged in the groove, the water blocking plate is connected to the inner wall of the groove through a compression spring, the water blocking plate is partially placed outside the groove, and the water blocking plate is connected to the groove around it through a flexible waterproof pad.

[0009] Furthermore, clamping blocks are provided at both ends of the sealing plate, and clamping grooves are provided at both ends of the moving block, and the clamping blocks of the sealing plate match the clamping grooves of the moving plate.

[0010] Furthermore, the sealing plate is made of rubber.

[0011] Furthermore, a plurality of cylinders are arranged on the movable plate, and the cylinders are connected with a cleaning assembly, and the cleaning assembly includes a brush head and a motor, and the motor drives the brush head to rotate.

[0012] Furthermore, a plurality of nozzles are arranged on the nozzle head, wherein the diameter of the nozzle facing the first trigger plate is larger than the diameter of the nozzles facing other directions.

[0013] Furthermore, sealing blocks are arranged on both water blocking plates, and the two sealing blocks are arranged alternately.

[0014] Furthermore, the nozzle is located between the upper ends of the two first trigger plates.

[0015] Furthermore, a pipeline is provided at the bottom of the water collecting tank, and the pipeline is connected to a water storage tank.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] The present application forms a space between the sealing plate, the movable plate and the photovoltaic panel, and cleans in this specific space, thereby preventing the separated dirt from spreading to the adjacent area where the cleaning is completed along with the flushing water flow. The photovoltaic panel is placed at an angle, so the liquid will flow out from the drainage hole along the surface of the photovoltaic panel into the sump, which is used to solve the technical problem that the separated dirt will spread to the adjacent area where the cleaning is completed along with the flushing water flow; the present application blocks the drainage hole by setting a first trigger plate, a second trigger plate and a water blocking plate to form a temporary closed space, and the water flow of the nozzle fills this closed space with a certain amount of liquid. The liquid can fully invade the internal area of ​​the bristles. At this time, the brush head rotates at a high speed, and the centrifugal force and the flushing effect of the liquid can effectively transfer the dirt inside the bristles and suspend them in the liquid, which can solve the problem that the fiber surface of the bristles will inevitably adhere to dirt during repeated contact with sticky stains, which not only reduces the cleaning efficiency, but also causes cross contamination in the subsequent cleaning process, affecting the overall cleaning quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0019] Figure 1 It is a schematic diagram of the cooperation between the mobile panel and the photovoltaic panel of the present invention;

[0020] Figure 2 It is a schematic diagram of the assembly structure of the moving plate and the sealing plate of the present invention;

[0021] Figure 3 It is a schematic diagram of the driving rod of the present invention before it moves;

[0022] Figure 4 It is a schematic diagram of the driving rod of the present invention after it moves;

[0023] Figure 5 It is a schematic diagram of the assembly structure of the driving rod of the present invention in the groove;

[0024] Figure 6 It is a schematic diagram of two sealing blocks of the present invention being arranged in a staggered manner;

[0025] Figure 7 is a side view of a movable plate of the present invention;

[0026] Figure 8 It is a schematic diagram of the specific connection structure of the cylinder, motor and brush head of the present invention.

[0027] Marks and corresponding parts names in the attached drawings:

[0028] 1-photovoltaic panel; 2-moving plate; 3-sealing plate; 4-water collecting tank; 5-first trigger plate; 6-second trigger plate; 7-sprinkler; 8-driving rod; 9-water blocking plate; 10-brush head; 11-groove; 12-sealing block; 13-cylinder; 14-motor. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0030] Example:

[0031] like Figures 1 to 8 As shown, the cleaning device of the photovoltaic panel 1 assembly in the present application includes a photovoltaic panel 1, a support frame and a movable plate 2, the photovoltaic panel 1 is installed on the support frame, embedded plates are arranged on both sides of the support frame, movable blocks are arranged at both ends of the movable plate 2, and the two movable blocks are slidably arranged in the two embedded plates respectively, a plurality of brush heads 10 are arranged on the movable plate 2, sealing plates 3 are arranged on both sides of the movable plate 2, a driver for driving the movable plate 2 to move is arranged on the support frame, and the sealing plate 3, the movable plate 2 and the photovoltaic panel 1 form a cavity; a drainage hole is arranged on one of the movable blocks, and a water collecting tank 4 is arranged below the photovoltaic panel 1 for collecting liquid flowing out of the drainage hole.

[0032] When dealing with stubborn stains such as bird droppings on the surface of the photovoltaic panel 1, the existing photovoltaic module cleaning device generally adopts a cleaning method of spraying clean water while using a flexible brush to perform a rotating flushing. However, this cleaning method has significant technical defects: when the rotating brush removes stains such as bird droppings, the separated dirt will spread to the adjacent cleaned area along with the flushing water flow, resulting in uneven cleaning effect and secondary pollution.

[0033] In order to solve the above-mentioned problem, the present application enables the driver to drive the movable plate 2 to move. The movable plate 2 of the prior art is not closed on both sides, while the present application seals the movable plate 2 on both sides through the sealing plate 3. Then, when the brush head 10 inside is cleaning, it can prevent the dirt from being thrown to other cleaned areas on the photovoltaic panel 1. For example, if the cleaning is performed in a vertical row, if there is no sealing plate 3 of the present application to block it, the brush head 10 will throw the bird droppings to other cleaned areas in the vertical row during cleaning. The present application forms a space between the sealing plate 3, the movable plate 2 and the photovoltaic panel 1, and cleans in this specific space, thereby preventing the separated dirt from spreading to the adjacent cleaned area with the flushing water flow. The photovoltaic panel 1 is placed at an angle, so the liquid will flow out from the drainage hole along the surface of the photovoltaic panel 1 into the sump 4. It should be mentioned here that there is no limitation on the technical means for supplying water to the brush head 10 for cleaning. A cleaning cavity can be provided in the movable plate 2, and a plurality of water injection holes are provided on the surface of the cleaning cavity. The first connecting pipe is used to connect an external water source to inject water into the cleaning cavity. The brush head 10 is located below the water injection hole. The water in the water injection hole moves toward the brush head 10 until it flows on the photovoltaic panel 1, and the brush head 10 is cleaned.

[0034] It should be noted that two trigger components are provided on one side of the movable plate 2 close to the photovoltaic panel 1, and the trigger component includes a first trigger plate 5 and a second trigger plate 6, the first trigger plate 5 and the second trigger plate 6 are connected, and the first trigger plate 5 is arranged on the movable plate 2 through a torsion spring, and in the initial state, the relative distance between the two first trigger plates 5 is smaller than the relative distance between the two second trigger plates 6; a nozzle 7 is provided on the movable plate 2, and the nozzle 7 acts on the two first trigger plates 5 by spraying liquid, so that the two first trigger plates 5 move away from each other, and at this time, the two second trigger plates 6 move relatively close to each other, and the two second trigger plates 6 move relatively close to each other to trigger the closing component, and the closing component is used to close the drainage hole.

[0035] As the bristles are repeatedly exposed to sticky stains, dirt will inevitably adhere to their fiber surfaces, which not only reduces the cleaning efficiency, but may also cause cross-contamination during the subsequent cleaning process, affecting the overall cleaning quality. There are microscopic pores and irregular structures on the surface of the bristle fibers, and sticky stains (such as bird droppings) have high adhesion and strong adsorption properties, which makes it easy for dirt particles to embed into the gaps between the bristle fibers. When the stains are first contacted, some of the dirt adheres to the surface of the bristles. With the continuous rotation and friction, the dirt further penetrates into the internal fibers of the bristles, forming pollution that is difficult to remove. In the subsequent cleaning process, these residual dirt may be cross-transferred to other areas, causing secondary pollution. What is even more difficult is that when the dirt penetrates into the internal area of ​​the bristles, it is difficult to completely remove it with conventional flushing methods, and it is often necessary to manually disassemble the brush head 10 for separate cleaning, which not only increases maintenance costs, but also reduces the working efficiency of the cleaning equipment. In addition, the accumulation of dirt will also affect the flexibility and cleaning pressure of the bristles, further reducing the cleaning effect.

[0036] The first trigger plate 5 and the second trigger plate 6 of the present application are connected, and the angle between the first trigger plate 5 and the second trigger plate 6 is an obtuse angle. By setting a torsion spring, it is maintained in a specific state, that is, the initial state. The initial state of the present application is that the distance between the two relative first trigger plates 5 is less than the distance between the two relative second trigger plates 6, and the two second trigger plates 6 are parallel to the sealing plate 3. The liquid sprayed by the nozzle 7 acts on the two first trigger plates 5. There is a certain distance between the first trigger plate 5 and the sealing plate 3. When the first trigger plate 5 is squeezed, the first trigger plate 5 moves toward the sealing plate 3, and the second trigger plate 6 also moves. The torsion spring elastic force here can be adjusted and selected according to the pressure of the sprayed liquid. Select a suitable torsion spring for assembly to ensure that the pressure of the sprayed liquid is greater than the elastic force of the torsion spring. The movement of the two second trigger plates 6 triggers the closing component, which is used to close the drain hole. At this time, a temporarily closed space is formed between the sealing plate 3, the movable plate 2 and the part of the photovoltaic panel 1, and the water flow of the nozzle 7 fills this closed space with a certain amount of liquid. The liquid can fully penetrate into the internal area of ​​the bristles. At this time, the brush head 10 rotates at a high speed. By using centrifugal force and the flushing effect of the liquid, the dirt inside the bristles can be effectively transferred out and suspended in the liquid. The control system can set a predetermined time period after the drain hole is closed. During this specified time, the nozzle 7 is controlled to continue spraying and the brush head 10 is rotated. Here, the staff can adjust the optimal cleaning time according to different space capacities. When the preset cleaning time is over, the nozzle 7 stops spraying. At this time, due to the disappearance of the spray pressure, the torsion spring restores the elastic force, driving the first trigger plate 5 and the second trigger plate 6 back to the initial state, and the closing component is released, and the drain hole is reopened. Under the action of gravity, the liquid carrying dirt is quickly discharged along the drain hole and collected by the sump 4 below.

[0037] The nozzle 7 added in this solution can be provided with a second connecting pipe connected to the first connecting pipe injected into the cleaning chamber mentioned above. A solenoid valve is provided at the connection between the nozzle 7 and the second connecting pipe. When a rough cleaning is required at the beginning, the water source is released through the first connecting pipe to make the water source flow toward a number of water injection holes, and the brush head 10 rotates to clean the photovoltaic panel 1. When the nozzle 7 is required to spray, the control system opens the second solenoid valve, and the nozzle 7 sprays. At this time, the closing component is started, and the closing component is used to close the drain hole. At this time, the solenoid valves on the first connecting pipe and the second connecting pipe are both opened, and the water source is stored in this temporarily closed space. When the solenoid valve is opened for a certain period of time, that is, when the water storage reaches a certain capacity, the control system turns off the water pump.

[0038] It should be noted that the closing component includes two grooves 11 connected to the outside world on the moving block, the grooves 11 are symmetrically arranged with the drain hole as the center, a water blocking plate 9 is arranged in the groove 11, the water blocking plate 9 is connected to the inner wall of the groove 11 through a compression spring, and a driving rod 8 is arranged on the water blocking plate 9, and the driving rod 8 is partially placed outside the groove 11. When the second trigger plate 6 rotates relatively, the second trigger plate 6 will touch the driving rod 8, and the driving rod 8 drives the water blocking plate 9 to move until the two water blocking plates 9 are in contact, so as to realize a temporary closed space. It is preferred that a sleeve is arranged in the groove 11, the water blocking plate 9 is sleeved in the sleeve, the water blocking plate 9 and the sleeve are connected by a compression spring, and a flexible waterproof pad is used to connect the water blocking plate 9 and the sleeve to prevent the compression spring from rusting in water for a long time and extend the life of the compression spring.

[0039] It should be noted that the two ends of the sealing plate 3 are provided with blocks, and the two ends of the moving block are provided with slots, and the blocks of the sealing plate 3 are matched with the slots of the moving plate 2. The matching of the blocks and the slots provides a stable fixing point for the sealing plate 3, ensuring that the sealing plate 3 maintains the correct position and direction during the cleaning process without offset or shaking. In addition, such a detachable connection can be disassembled and cleaned after a certain period of time to prevent the accumulation of long-term accumulated dirt from causing uneven sealing surfaces and causing tiny gaps or bumps.

[0040] It should be noted that the sealing plate 3 is made of rubber material to avoid scratching the photovoltaic panel 1 when moving, and the rubber sealing plate 3 can gently wipe the surface of the photovoltaic panel 1 when moving, playing a cleaning role again.

[0041] It should be noted that the movable plate 2 is provided with cylinders having the same number as the brush heads 10 , the cylinders are connected to motors, and the motors are connected to the ends of the brush heads 10 .

[0042] During the early stage of cleaning, the cylinder drives the brush head 10 to move downward, and rotates and cleans when it contacts the photovoltaic panel 1. This step is to clean the photovoltaic panel 1. After the drain hole is closed, the nozzle continues to spray water, and the enclosed space formed will be filled with an appropriate amount of liquid. The cylinder drives the brush head 10 to move upward so that the brush head 10 does not contact the photovoltaic panel 1. At this time, the liquid water can also be immersed in the bristles of the brush head 10. The current rotation of the brush head 10 is self-cleaning, and the dirt accumulated inside the bristles is separated by centrifugal force and the flushing effect of the liquid. The self-cleaning of the brush head 10 is carried out after the moving plate 2 moves for a certain period of time. This can be set by the staff according to the size of the photovoltaic panel 1. The cleaning liquid in the enclosed space is used for both cleaning the photovoltaic panel 1 and self-cleaning of the brush head 10, which improves the efficiency of water resource utilization. It is also necessary to mention that the cylinder 13 is arranged on the movable plate 2, and the output end of the cylinder 13 is connected to the outer shell of the motor 14. The motor 14 is connected to the end of the brush head 10, and the output end of the motor 14 drives the brush head 10 to rotate. The overall shell of the motor 14 does not rotate. The cylinder 13 is extended and retracted, so the cylinder 13 can drive the motor 14 to extend and retract, so as to realize the function of moving the brush head 10 up and down, and the cylinder 13 and the motor 14 can be protected by a waterproof shell. This is one of the implementation methods. In this way, the above-mentioned water injection hole and the brush head 10 can be misaligned to realize this working process, and the brush head 10 can still be soaked to clean the photovoltaic panel 1. Figure 8 shown.

[0043] It should be noted that the nozzle 7 is provided with a plurality of nozzles, wherein the nozzle diameter facing the first trigger plate 5 is larger than the nozzle diameters facing other directions. The nozzle diameter facing the first trigger plate 5 is larger, which can generate a stronger water flow pressure, ensuring that the closing mechanism can be reliably triggered.

[0044] It should be noted that sealing blocks 12 are arranged on both water blocking plates 9, and the two sealing blocks 12 are arranged alternately. The alternate arrangement enhances the sealing performance and reduces the leakage of the liquid.

[0045] It should be noted that the nozzle 7 is located between the upper ends of the two first trigger plates 5. The nozzle 7 is located between the two first trigger plates 5 and can act on the two trigger plates at the same time. The nozzle 7 is closer to the upper ends of the first trigger plates 5 to ensure the rapid response and reliability of the trigger mechanism.

[0046] It should be noted that a pipeline is provided at the bottom of the water collecting tank 4, and the pipeline is connected to a water storage tank to prevent the liquid in the water collecting tank 4 from overflowing.

[0047] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cleaning device for a photovoltaic panel assembly, comprising a photovoltaic panel (1), a support frame and a movable plate (2), wherein the photovoltaic panel (1) is mounted on the support frame, embedded plates are arranged on both sides of the support frame, movable blocks are arranged at both ends of the movable plate (2), the two movable blocks are respectively slidably arranged in the two embedded plates, and a plurality of brush heads (10) are arranged on the movable plate (2), characterized in that: Sealing plates (3) are respectively arranged on both sides of the movable plate (2); a driver for driving the movable plate (2) to move is arranged on the support frame; the sealing plate (3), the movable plate (2) and the photovoltaic panel (1) form a cavity; a drainage hole is arranged on one of the movable blocks; a water collecting tank (4) is arranged below the photovoltaic panel (1) for collecting liquid flowing out of the drainage hole.

2. The cleaning device for photovoltaic panel assembly according to claim 1, characterized in that: Two trigger assemblies are arranged on one side of the movable plate (2) close to the photovoltaic panel (1), and the trigger assemblies include a first trigger plate (5) and a second trigger plate (6), the first trigger plate (5) and the second trigger plate (6) are connected, and the first trigger plate (5) is arranged on the movable plate (2) via a torsion spring, and in an initial state, the relative distance between the two first trigger plates (5) is smaller than the relative distance between the two second trigger plates (6); a nozzle (7) is arranged on the movable plate (2), and the nozzle (7) acts on the two first trigger plates (5) by spraying liquid, so that the two first trigger plates (5) move away from each other, and at this time, the two second trigger plates (6) move relatively close to each other, and the two second trigger plates (6) move relatively close to each other to trigger the closing assembly, and the closing assembly is used to close the water leakage hole.

3. The cleaning device for photovoltaic panel assembly according to claim 2, characterized in that: The sealing component comprises two grooves (11) connected to the outside world, which are provided on the moving block. The two grooves (11) are symmetrically arranged with the drain hole as the center. A water blocking plate (9) is slidably arranged in the groove (11). The water blocking plate (9) is connected to the inner wall of the groove (11) through a compression spring. A driving rod (8) is arranged on the water blocking plate (9), and the driving rod (8) is partially placed outside the groove (11).

4. The cleaning device for photovoltaic panel assembly according to claim 1, characterized in that: The two ends of the sealing plate (3) are provided with clamping blocks, and the two ends of the moving block are provided with clamping grooves, and the clamping blocks of the sealing plate (3) match the clamping grooves of the moving plate (2).

5. The cleaning device for photovoltaic panel assembly according to claim 1, characterized in that: The sealing plate (3) is made of rubber.

6. The cleaning device for photovoltaic panel assembly according to claim 1, characterized in that: The movable plate (2) is provided with cylinders (13) of the same number as the brush heads (10), the cylinders (13) are connected to motors (14), the motors (14) are connected to the ends of the brush heads (10), and the motors (14) drive the brush heads (10) to rotate.

7. The cleaning device for photovoltaic panel assembly according to claim 2, characterized in that: A plurality of nozzles are arranged on the spray head (7), wherein the diameter of the nozzles facing the first trigger plate (5) is larger than the diameters of the nozzles facing other directions.

8. The cleaning device for photovoltaic panel assembly according to claim 3, characterized in that: The two water blocking plates (9) are each provided with a sealing block (12), and the two sealing blocks (12) are arranged alternately.

9. The cleaning device for photovoltaic panel assembly according to claim 2, characterized in that: The spray head (7) is located between the upper ends of the two first trigger plates (5).

10. The photovoltaic panel assembly cleaning device according to claim 1, characterized in that: A pipeline is provided at the bottom of the water collecting tank (4), and the pipeline is connected to a water storage tank.

Images