Cleaning device for household photovoltaic module

Abstract

The utility model discloses a cleaning device for a household photovoltaic module. The cleaning device comprises a water collecting tank, a mounting rack, a cleaning frame, a flushing assembly and a cleaning assembly, wherein wheels are mounted at the bottom of the water collecting tank; the mounting rack is mounted on the upper side of the water collecting tank; the flushing assembly comprises a draw-off pump, a flushing spray head and a water conveying pipe connected with the draw-off pump and the flushing spray head. The cleaning assembly comprises a supporting plate, a movable shaft movably connected with the supporting plate, a sweeping disc connected with the movable shaft and a driving motor which is connected with the movable shaft and drives the sweeping disc to rotate through the movable shaft. The cleaning frame is provided with a linear driving mechanism used for driving the cleaning assembly to move linearly, and the mounting frame is provided with a rotation driving component used for driving the cleaning frame to rotate up and down relative to the horizontal plane. According to the cleaning device, the number of parts is relatively small, the technology is mature, and the problems that an existing cleaning device is inconvenient to use and difficult to maintain are solved.

Description

[Technical Field]

[0001] This utility model belongs to the field of photovoltaic power generation equipment technology, specifically relating to a cleaning device for household photovoltaic modules. [Background Technology]

[0002] Because photovoltaic (PV) modules are used outdoors for extended periods, dust easily accumulates on their surfaces, affecting their efficiency. Therefore, regular cleaning of PV modules is necessary. Common PV module cleaning equipment is used in large-scale PV power plants, but it is inconvenient to use or difficult to maintain. See Chinese Utility Model Patent No. CN 211275821 U, which discloses a suspended photovoltaic module cleaning device, including a carriage. The carriage is fixedly equipped with a platform I and a platform II. A water tank is placed on the platform I. Both the carriage and the water tank have openings at the top. A water pump is placed on the water tank. A water pipe is fixedly installed on the water pump. The water pipe is a flexible hose. A handle and a nozzle are fixedly installed on the water pipe. A turntable I is rotatably installed on the platform II. An electric telescopic rod I is fixedly installed on the turntable I. A straight rod I is fixedly installed at the upper end of the electric telescopic rod I. A support rod is installed on the straight rod I through a lifting mechanism. A slider is fixedly installed on the upper part of the support rod. The slider is slidably connected to the straight rod II. A straight rod III is installed on the straight rod II through a rotating mechanism. A turntable II is rotatably installed on the straight rod III. A cleaning brush is rotatably connected to the turntable II. In this technical solution, in order to adjust the height and angle of the device according to the position and height of the photovoltaic modules to be cleaned, electric telescopic rod I, electric telescopic rod II, electric telescopic rod III20, as well as straight rod I, lifting mechanism, support rod, slider, straight rod II, rotating mechanism, straight rod III, etc. are set up, which makes the structure complex, inconvenient to use, and difficult to maintain. [Utility Model Content]

[0003] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a cleaning device for residential photovoltaic modules, which solves the problems of inconvenience in use and difficulty in maintenance of existing cleaning devices.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A cleaning device for residential photovoltaic modules includes a water collection tank with wheels mounted on its bottom, a mounting frame mounted on the water collection tank, a cleaning frame connected to the mounting frame, a flushing assembly connected to the water collection tank, and a cleaning assembly connected to the cleaning frame. The flushing assembly includes a pump, a flushing nozzle, and a water supply pipe connecting the pump and the flushing nozzle. The pump draws cleaning fluid from inside the water collection tank into the water supply pipe and sprays the cleaning fluid from the flushing nozzle. The cleaning assembly includes a support plate, a movable shaft movably connected to the support plate, a cleaning disc connected to the movable shaft, and a drive motor connected to the movable shaft and driving the cleaning disc to rotate via the movable shaft. The mounting frame is equipped with a rotary drive component that drives the cleaning frame to rotate up and down relative to a horizontal plane, and the cleaning frame is equipped with a linear drive mechanism for driving the cleaning assembly to move linearly.

[0006] Preferably, the rotation drive component is a stepper motor, which drives the cleaning frame to rotate.

[0007] Preferably, the linear drive mechanism includes a servo motor, an adjusting lead screw, and a lead screw sleeve threadedly connected to the adjusting lead screw. The servo motor drives the adjusting lead screw to rotate, and the lead screw sleeve is connected to the cleaning assembly.

[0008] Preferably, the cleaning frame is provided with a limiting slide, and the lead screw sleeve is slidably connected to the limiting slide.

[0009] Preferably, the rinsing nozzle is fixed to the upper part of the cleaning frame.

[0010] Preferably, the cleaning frame has a pipe clamp on its side, and the water supply pipe is attached to the side of the cleaning frame and embedded in the pipe clamp.

[0011] Preferably, the top of the water collection tank is provided with a water inlet; and / or, the bottom of the water collection tank is provided with a water outlet, and the pump is connected to the water outlet.

[0012] Preferably, the cleaning disc is fixedly connected to a connecting shaft, and the connecting shaft is movably embedded inside the movable shaft and fixed by fixing bolts.

[0013] Preferably, a handle is installed on the rear top of the water collection tank; and / or, the wheels are swivel wheels.

[0014] Preferably, the water collection tank has a viewing window on its side.

[0015] The present invention adopts the above technical solution and has the following beneficial effects:

[0016] 1. In use, this utility model allows the cleaning device to be easily moved to the photovoltaic module with the help of wheels. The rotary drive component drives the cleaning frame to rotate up and down relative to the horizontal plane, adjusting the cleaning frame to a suitable cleaning angle to keep the cleaning frame and the photovoltaic module surface tilted at the same angle and in contact. Then, the linear drive mechanism drives the cleaning disc to move on the photovoltaic module. When the cleaning disc is in contact with the photovoltaic module surface, the drive motor drives the cleaning disc to rotate, so that the cleaning disc moves along the photovoltaic module surface while cleaning the photovoltaic module surface. Moreover, during the cleaning process, the staff can push the cleaning device to move, thereby achieving large-area cleaning.

[0017] In addition, the pump draws the cleaning fluid from inside the water collection tank into the water supply pipe. The cleaning fluid inside the water supply pipe can be sprayed onto the surface of the photovoltaic module from the rinsing nozzle, which facilitates the cleaning of the photovoltaic module surface.

[0018] To ensure that the cleaning frame and the photovoltaic module have the same surface tilt and fit together, and that the limited cleaning disc can cover the entire longitudinal direction of the photovoltaic module, only a rotary drive component and a linear drive mechanism are needed. Not only are there fewer components, but the technology is also relatively mature. During operation, there are fewer steps, which solves the problems of inconvenience and difficulty in maintenance of existing cleaning devices.

[0019] 2. The cleaning frame is driven to rotate by a stepper motor, which can precisely control the rotation angle and adjust the cleaning frame to the appropriate cleaning angle.

[0020] 3. The servo motor drives the adjusting screw to rotate and moves the screw sleeve linearly. Since the screw sleeve is slidably connected to the limit slide and connected to the cleaning component, the screw sleeve can drive the cleaning disc to move obliquely on the surface of the photovoltaic module to achieve cleaning coverage of the entire longitudinal direction of the photovoltaic module.

[0021] 4. The rinsing nozzle is fixed to the upper part of the cleaning frame. Therefore, when the cleaning frame and the surface of the photovoltaic module have the same inclination and are in close contact, the rinsing nozzle is directed towards the upward side of the photovoltaic module surface. The cleaning liquid is sprayed from the rinsing nozzle onto the upward side of the photovoltaic module surface. Due to the inclination of the photovoltaic module, the cleaning liquid can flow along the slope on the photovoltaic module surface without the need for too many rinsing nozzles, which facilitates rinsing.

[0022] 5. Pipe clamps are installed to facilitate the routing of water pipes. A water inlet is provided at the top of the water collection tank for easy addition of cleaning solution. In addition, a water outlet is provided at the bottom of the water collection tank, and the pump is connected to the water outlet so that cleaning solution can be sprayed even when the water level in the collection tank is low.

[0023] 6. The connecting shaft is movably embedded inside the movable shaft and fixed by the fixing bolts. Therefore, the sweeping disc can be disassembled and replaced. When replacing, remove the fixing bolts from the movable shaft, and then pull the sweeping disc. The connecting shaft on the sweeping disc will then be moved out from inside the movable shaft.

[0024] 7. The handle is provided to facilitate the movement of the cleaning device, and the viewing window is provided to facilitate the observation of changes in the liquid level in the water collection tank.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0026] The utility model will be further described below with reference to the accompanying drawings:

[0027] Figure 1 This is a frontal cross-sectional view of the present invention.

[0028] Figure 2 This is a front view structural diagram of the cleaning brush disc of this utility model;

[0029] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0030] Figure 4 This is a front view structural diagram of the water collection tank of this utility model.

[0031] In the diagram: 1. Casters; 2. Water tank; 3. Water inlet; 4. Stepper motor; 5. Mounting bracket; 6. Cleaning disc; 7. Screw sleeve; 8. Support plate; 9. Cleaning frame; 10. Adjusting screw; 11. Servo motor; 12. Water supply pipe; 13. Pipe clamp; 14. Control cabinet; 15. Handle; 16. Extraction pump; 17. Extraction pipe; 18. Water inlet; 19. Drive motor; 20. Connecting shaft; 21. Fixing bolt; 22. Movable shaft; 23. Flushing nozzle; 24. Limiting slide; 25. Viewing window.

Detailed Implementation Methods

[0032] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0033] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0034] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," and "rear," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] See Figure 1-4 A cleaning device for residential photovoltaic modules includes a water collection tank 2 with wheels mounted on its bottom, a mounting frame 5 mounted on the front side of the top of the water collection tank 2, a cleaning frame 9 movably mounted inside the mounting frame 5, and a rinsing assembly connected to the water collection tank 2 and the cleaning assembly connected to the cleaning frame 9. The rinsing assembly includes a pump 16, a rinsing nozzle 23, and a water supply pipe 12 connecting the pump 16 and the rinsing nozzle 23. The pump 16 pumps cleaning fluid from inside the water collection tank 2 into the water supply pipe 12 and sprays the cleaning fluid from the rinsing nozzle 23. The cleaning assembly includes a support plate 8, a movable shaft 22 movably connected to the support plate 8, a cleaning disc 6 connected to the movable shaft 22, and a drive motor 19 connected to the movable shaft 22 and driving the cleaning disc 6 to rotate via the movable shaft 22.

[0037] Specifically, a pump 16 is installed at the rear of the top of the water collection tank 2, a water inlet 18 is located at the bottom of the rear of the water collection tank 2, and a water inlet 3 is located at the top of the front of the water collection tank 2. A water supply pipe 12 is fixedly connected to the output end of the pump 16, and a rinsing nozzle 23 is installed at the end of the water supply pipe 12. A suction pipe 17 is fixedly connected to the input end of the pump 16, and the suction pipe 17 is fixedly connected to the water inlet 18. The water supply pipe 12 is attached to the rear of the cleaning frame 9, and a pipe clamp 13 is fixedly connected to the rear of the cleaning frame 9, with the water supply pipe 12 embedded inside the pipe clamp 13. The pipe clamp facilitates the routing of the water supply pipe. A water inlet is located at the top of the water collection tank for easy addition of cleaning fluid. Additionally, a water inlet is located at the bottom of the water collection tank, and the pump is connected to the water inlet, allowing cleaning fluid to be sprayed even when the water level in the collection tank is low.

[0038] In addition, the cleaning frame 9 is equipped with a linear drive mechanism for driving the cleaning components to move linearly, and the mounting bracket 5 is provided with a rotary drive component for driving the cleaning frame 9 to rotate up and down relative to the horizontal plane. The rotary drive component is a stepper motor 4, which drives the cleaning frame 9 to rotate, allowing precise control of the rotation angle so that the cleaning frame can be adjusted to a suitable cleaning angle. Of course, the cleaning frame can also be driven to rotate around its pivot point by a hydraulic rod or an electric cylinder.

[0039] In this embodiment, the linear drive mechanism includes a servo motor 11, an adjusting lead screw 10, and a lead screw sleeve 7 threadedly connected to the adjusting lead screw. The servo motor 11 drives the adjusting lead screw 10 to rotate, and the lead screw sleeve 7 is connected to the cleaning assembly. Specifically, the adjusting lead screw 10 is movably connected to the inside of the cleaning frame 9, and the lead screw sleeve 7 is installed on the outside of the adjusting lead screw 10. A support plate 8 is fixedly connected to the lead screw sleeve 7. A movable shaft 22 is movably connected to the front side of the support plate 8. A cleaning disc 6 is provided on one side of the movable shaft 22, and a connecting shaft 20 is fixedly connected to the rear side of the cleaning disc 6. A drive motor 19 is installed on the rear side of the support plate 8, and a servo motor 11 is installed at the top of the cleaning frame 9. Of course, a hydraulic rod or a cylinder can also be used as the linear drive mechanism.

[0040] A control cabinet 14 is installed at the middle position of the top of the water collection tank 2. The stepper motor 4, servo motor 11, extraction pump 16 and drive motor 19 are all electrically connected to the inside of the control cabinet 14. The output end of the stepper motor 4 is fixedly connected to the front end of the cleaning frame 9. The output end of the servo motor 11 is fixedly connected to the top of the adjusting screw 10. The output end of the drive motor 19 is fixedly connected to the rear side of the movable shaft 22. The rear side of the inside of the cleaning frame 9 is fixedly connected to the limiting slide 24. The screw sleeve 7 is slidably connected to the outside of the limiting slide 24.

[0041] The working principle of this utility model is as follows: Figure 1 , Figure 2 and Figure 3 As shown, the cleaning device can be easily moved close to the photovoltaic module using wheels. Then, the stepper motor 4 is started, which drives the cleaning frame 9 to rotate and adjust to a suitable cleaning angle, ensuring that the cleaning frame 9 is at the same angle as and in close contact with the surface of the photovoltaic module. Then, the servo motor 11 drives the adjusting screw 10 to rotate. The screw sleeve 7 outside the adjusting screw 10 can drive the cleaning disc 6 to move longitudinally on the photovoltaic module, achieving cleaning coverage of the entire longitudinal direction of the photovoltaic module. During the cleaning process, the drive motor drives the cleaning disc to rotate, so that the cleaning disc moves along the surface of the photovoltaic module while cleaning the surface of the photovoltaic module. Moreover, during the cleaning process, the staff can push the cleaning device to move, thereby achieving large-area cleaning.

[0042] Because in order to maintain the same tilt angle between the cleaning frame and the photovoltaic module and to ensure a close fit, and because the limited cleaning disc can cover the entire longitudinal direction of the photovoltaic module, only a rotary drive component and a linear drive mechanism are needed. Not only are there fewer components, but the technology is also relatively mature. During operation, there are fewer steps, which solves the problems of inconvenience and difficulty in maintenance of existing cleaning devices.

[0043] like Figure 1 and Figure 4 As shown, the cleaning frame 9 is positioned vertically. The rinsing nozzle 23 is fixed to the upper part of the cleaning frame 9. Therefore, when the cleaning frame and the photovoltaic module surface have the same inclination and are in contact, the rinsing nozzle faces the upward-sloping side of the photovoltaic module surface. The pump 16 can pump the cleaning fluid inside the water collection tank 2 into the water supply pipe 12. The cleaning fluid inside the water supply pipe 12 can be sprayed from the rinsing nozzle 23 onto the upward-sloping side of the photovoltaic module surface. Due to the inclination of the photovoltaic module, the cleaning fluid can flow along the slope on the photovoltaic module, facilitating cleaning without the need for excessive rinsing nozzles, thus simplifying rinsing.

[0044] To facilitate the movement of the cleaning device, wheels, preferably casters 1, are fixedly connected to the bottom of the water collection tank 2. The water collection tank is usually a rectangular box, and casters 1 or similar wheels can be directly installed at the four corners of the bottom of the water collection tank without the need for an additional vehicle body to support the water collection tank. In addition, a handle 15 is installed on the rear side of the top of the water collection tank 2, and a viewing window 25 is provided on the side of the water collection tank 2; the handle is used to push the entire cleaning device to move, and the viewing window is provided to facilitate observation of changes in the liquid level in the water collection tank.

[0045] Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, when the cleaning disc 6 is attached to the surface of the residential photovoltaic module, the drive motor 19 can drive the cleaning disc 6 to clean the glass on the photovoltaic module. Furthermore, to allow the cleaning disc 6 to be detachable and replaceable, a fixing bolt 21 is provided at the front end of the movable shaft 22, and one side of the connecting shaft 20 is embedded inside the movable shaft 22 and fixed by the fixing bolt 21. During replacement, the fixing bolt 21 is removed from the movable shaft 22, and then the cleaning disc 6 is pulled to one side, allowing the connecting shaft 20 on the cleaning disc 6 to be removed from inside the movable shaft 22.

[0046] Understandably, the cleaning solution inside the water collection tank can be either specially prepared or simply used water. Furthermore, both the flushing and cleaning components can operate independently. For example, the flushing component alone can clean the surface of the photovoltaic modules, eliminating the need for a separate cleaning component. This allows for cleaning of the photovoltaic modules in various environments.

[0047] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A cleaning device for residential photovoltaic modules, characterized in that, The system includes a water collection tank with wheels mounted on its bottom, a mounting bracket mounted on the water collection tank, a cleaning frame connected to the mounting bracket, a flushing assembly connected to the water collection tank, and a cleaning assembly connected to the cleaning frame. The flushing assembly includes a pump, a flushing nozzle, and a water supply pipe connecting the pump and the flushing nozzle. The pump draws cleaning fluid from inside the water collection tank into the water supply pipe and sprays the cleaning fluid from the flushing nozzle. The cleaning assembly includes a support plate, a movable shaft movably connected to the support plate, a sweeping disc connected to the movable shaft, and a drive motor connected to the movable shaft and driving the sweeping disc to rotate via the movable shaft. The mounting bracket is equipped with a rotary drive component that drives the cleaning frame to rotate up and down relative to a horizontal plane, and the cleaning frame is equipped with a linear drive mechanism for driving the cleaning assembly to move linearly.

2. The cleaning device for residential photovoltaic modules according to claim 1, characterized in that, The rotation drive component is a stepper motor, which drives the cleaning frame to rotate.

3. The cleaning device for residential photovoltaic modules according to claim 1, characterized in that, The linear drive mechanism includes a servo motor, an adjusting lead screw, and a lead screw sleeve threadedly connected to the adjusting lead screw. The servo motor drives the adjusting lead screw to rotate, and the lead screw sleeve is connected to the cleaning component.

4. A cleaning device for residential photovoltaic modules according to claim 3, characterized in that, The cleaning frame is provided with a limiting slide, and the lead screw sleeve is slidably connected to the limiting slide.

5. A cleaning device for residential photovoltaic modules according to claim 1, characterized in that, The rinsing nozzle is fixed to the upper part of the cleaning frame.

6. A cleaning device for residential photovoltaic modules according to claim 1, characterized in that, The cleaning frame has a pipe clamp on its side, and the water supply pipe is attached to the side of the cleaning frame and embedded in the pipe clamp.

7. A cleaning device for residential photovoltaic modules according to claim 1, characterized in that, The water collection tank is provided with a water inlet at the top; and / or, the water collection tank is provided with a water outlet at the bottom, and the pump is connected to the water outlet.

8. A cleaning device for residential photovoltaic modules according to claim 1, characterized in that, The cleaning disc is fixedly connected to a connecting shaft, which is movably embedded inside the movable shaft and fixed by fixing bolts.

9. A cleaning device for residential photovoltaic modules according to claim 1, characterized in that, A handle is installed on the rear top of the water collection tank; and / or, the wheels are swivel wheels.

10. A cleaning device for residential photovoltaic modules according to claim 1, characterized in that, The water collection tank has a viewing window on its side.

Images