A liquid spraying assembly and a photovoltaic module cleaning robot

Abstract

This utility model relates to the technical field of photovoltaic module cleaning equipment, and in particular to a liquid spraying component and a photovoltaic module cleaning robot, which improves the cleaning effect and can flexibly adjust the cleaning liquid ratio; it includes a liquid storage tank, a delivery pipe, a nozzle, a pressurizing mechanism, and a water rectifier; the liquid storage tank stores cleaning liquid and is provided with a liquid filling port on the liquid storage tank; one end of the delivery pipe is connected to the liquid storage tank and the other end is connected to the nozzle; multiple nozzles are provided, and the multiple nozzles are spaced apart on the delivery pipe, and the spray direction of each nozzle is towards the surface of the photovoltaic module; the pressurizing mechanism and the water rectifier are both provided on the delivery pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of photovoltaic module cleaning equipment, and in particular to a liquid spraying component and a photovoltaic module cleaning robot. Background Technology

[0002] With the increasing global demand for clean energy, photovoltaic (PV) power generation, as an important renewable energy source, has been widely applied and developed. PV modules are the core component of a PV power generation system, and the cleanliness of their surfaces directly affects PV power generation efficiency. During the actual operation of a PV power plant, PV modules are exposed to the outdoor environment for extended periods, making them susceptible to erosion and accumulation by various pollutants such as dust, bird droppings, sand, and leaves. These pollutants can obstruct the surface of the PV modules, reducing sunlight absorption and thus decreasing their power generation efficiency. In severe cases, this can even affect the overall power generation efficiency of the entire PV power plant.

[0003] To ensure the power generation efficiency of photovoltaic (PV) modules, regular cleaning is necessary. Currently, common PV module cleaning methods mainly include manual cleaning and mechanical cleaning. Manual cleaning is the most traditional method, usually involving cleaning personnel using cleaning tools to wipe the surface of the PV modules. While simple and easy, this method is inefficient. Mechanical cleaning improves cleaning efficiency and quality to some extent, but some mechanical cleaning equipment only cleans PV modules by wiping or scraping, which is ineffective at removing stubborn stains. Moreover, the cleaning process may cause scratches and damage to the surface of the PV modules, affecting their lifespan. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a spraying component and a photovoltaic module cleaning robot that improves cleaning effect and can flexibly adjust the cleaning liquid ratio.

[0005] This utility model discloses a liquid spraying assembly, including a liquid storage tank, a delivery pipe, a nozzle, a pressurizing mechanism, and a water rectifier. The liquid storage tank contains cleaning liquid and has a filling port. One end of the delivery pipe is connected to the liquid storage tank, and the other end is connected to the nozzle. Multiple nozzles are arranged at intervals on the delivery pipe, and the spraying direction of each nozzle is towards the surface of the photovoltaic module. The pressurizing mechanism and the water rectifier are both located on the delivery pipe.

[0006] Furthermore, a partition is installed inside the liquid storage tank to divide it into a water storage tank and a cleaning liquid storage tank; the delivery pipeline includes a spray pipe, a water delivery pipe and a liquid delivery pipe, the nozzle is installed on the spray pipe, and a flow regulator is installed at the end of the spray pipe away from the nozzle. The two ends of the water delivery pipe are connected to the water storage tank and the flow regulator, respectively, and the two ends of the liquid delivery pipe are connected to the cleaning liquid storage tank and the flow regulator, respectively.

[0007] Furthermore, the bottoms of both the cleaning fluid storage tank and the water storage tank are inclined, and each has a drain outlet at its lowest point.

[0008] Furthermore, the flow regulating component includes a connecting pipe and an outer pipe sleeved on its outside; the two ends of the connecting pipe are respectively connected to the spray pipe and the water supply pipe, and a cleaning liquid inlet tank is opened on the wall of the connecting pipe; the outer pipe is connected to the liquid supply pipe, and an adjusting ring is rotatably connected to the outer pipe, and a plug corresponding to the cleaning liquid inlet tank is provided on the adjusting ring.

[0009] Furthermore, the outside of the conveying pipeline is wrapped with an insulation layer.

[0010] Furthermore, the nozzles include narrow-angle nozzles for edge areas and wide-angle nozzles for center areas.

[0011] Furthermore, the water rectifier is configured with a multi-layered mesh structure, and the mesh aperture gradually decreases from the end near the liquid storage tank to the nozzle end.

[0012] This utility model discloses a photovoltaic module cleaning robot, which includes the above-mentioned spraying component.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. With multiple nozzles all pointing towards the surface of the photovoltaic module, the cleaning solution can be evenly sprayed onto the surface of the photovoltaic module. Compared with simple wiping or scraping, it has a better cleaning effect on stubborn stains. At the same time, the nozzles include narrow-angle nozzles and wide-angle nozzles, which are used for edge areas and center areas respectively. They can be used for targeted cleaning according to the characteristics of different areas, further improving the cleaning effect.

[0015] 2. The liquid storage tank is divided into a water storage tank and a cleaning liquid storage tank by a partition. The ratio of water and cleaning liquid entering the nozzle can be flexibly adjusted by a flow regulator. The concentration of cleaning liquid can be reasonably configured according to the degree of pollution of photovoltaic modules and actual cleaning needs, so as to ensure the cleaning effect and avoid waste of cleaning liquid. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the liquid storage tank of this utility model;

[0019] Figure 3 This is a schematic diagram of the flow regulating component of this utility model;

[0020] The attached diagram is labeled as follows: 1. Storage tank; 11. Filling port; 12. Baffle plate; 13. Water storage tank; 14. Cleaning solution storage tank; 15. Drain port; 2. Delivery pipe; 21. Spray nozzle; 22. Water delivery pipe; 23. Liquid delivery pipe; 24. Flow regulator; 241. Connecting pipe; 242. Outer pipe; 243. Cleaning solution inlet tank; 244. Adjusting ring; 245. Plug; 3. Nozzle; 31. Narrow angle nozzle; 32. Wide angle nozzle; 4. Pressurization mechanism; 5. Water rectifier. Detailed Implementation

[0021] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0022] like Figure 1 As shown, a liquid spraying assembly of this utility model includes a liquid storage tank 1, a delivery pipe 2, a nozzle 3, a pressurizing mechanism 4, and a water rectifier 5. The liquid storage tank 1 stores cleaning liquid and has a liquid filling port 11. One end of the delivery pipe 2 is connected to the liquid storage tank 1, and the other end is connected to the nozzle 3. Multiple nozzles 3 are arranged at intervals on the delivery pipe 2, and the spraying direction of each nozzle 3 is towards the surface of the photovoltaic module. The pressurizing mechanism 4 and the water rectifier 5 are both arranged on the delivery pipe 2.

[0023] In the embodiments of this application, the storage tank 1 is made of high-strength, corrosion-resistant materials, such as stainless steel or special plastic materials, to ensure that it will not be corroded or damaged by the chemical properties of the cleaning fluid during long-term storage and use, thereby ensuring the purity and performance of the cleaning fluid. The filling port 11 is located at the top of the storage tank 1 to facilitate the rapid addition of the cleaning fluid and to prevent leakage during the addition process. In addition, the filling port 11 is also equipped with a sealing cap that fits it to prevent the cleaning fluid from evaporating and external impurities from entering the storage tank 1, ensuring the stability of the quality of the cleaning fluid. The layout of the delivery pipe 2 is planned according to the arrangement of the photovoltaic modules and the cleaning requirements. When the photovoltaic modules need to be cleaned, the cleaning fluid is transported through the delivery pipe 2. During this process, the pressurizing mechanism 4 uses mechanical power to pressurize the pump. The cleaning fluid in the delivery pipe 2 is pressurized to give it sufficient kinetic energy and allow it to flow at a high speed toward the nozzle 3. This pressure ensures that the cleaning fluid has sufficient impact force when it is sprayed from the nozzle 3, effectively removing stubborn stains from the surface of the photovoltaic module. The water rectifier 5 eliminates air bubbles mixed in with the cleaning fluid through its internal degassing structure, preventing air bubbles from being sprayed out of the nozzle 3 along with the cleaning fluid and affecting the cleaning effect. The nozzle 3 is used to spray the pressurized and rectified cleaning fluid toward the surface of the photovoltaic module in a specific spray direction. The spacing of the nozzles 3 on the delivery pipe 2 is set according to the size of the photovoltaic module, and the spray coverage of adjacent nozzles 3 slightly overlaps to ensure that each nozzle 3 can evenly cover the surface of the photovoltaic module and achieve a comprehensive cleaning effect.

[0024] In some embodiments of this application, such as Figure 2As shown, a partition 12 is provided inside the storage tank 1, dividing the storage tank 1 into a water tank 13 and a cleaning solution tank 14; the delivery pipeline 2 includes a nozzle 21, a water delivery pipeline 22, and a liquid delivery pipeline 23. A nozzle 3 is mounted on the nozzle 21, and a flow regulator 24 is provided at the end of the nozzle 21 furthest from the nozzle 3. The two ends of the water delivery pipeline 22 are connected to the water tank 13 and the flow regulator 24, respectively, and the two ends of the liquid delivery pipeline 23 are connected to the cleaning solution tank 14 and the flow regulator 24, respectively. In the embodiments of this application, the partition 12 is made of a material with good sealing performance, such as a combination of a high-strength rubber gasket and a stainless steel partition, to ensure complete isolation between the two storage spaces and prevent… The water and cleaning solution are mixed together; the water storage tank 13 is used to store cleaning water, and its shape and size are designed according to the overall design of the spraying assembly and actual needs. It is generally designed as a large cuboid or cube structure to provide sufficient water; the cleaning solution storage tank 14 is specifically used to store specially formulated cleaning solution. The composition of the cleaning solution is customized according to the type of contaminants on the surface of the photovoltaic module and the cleaning requirements. For example, it contains appropriate amounts of surfactants, detergents and other ingredients to achieve better cleaning results; the flow regulating component 24 controls the flow ratio of water and cleaning solution manually or electrically to prepare a cleaning solution with a specific concentration to meet the cleaning requirements of different photovoltaic modules.

[0025] In some embodiments of this application, the bottoms of the cleaning fluid storage tank 14 and the water storage tank 13 are both inclined, and each is provided with a drain port 15 at the lowest point. Taking advantage of the property that liquids naturally flow to lower places under the action of gravity, a clear convergence path is constructed for the cleaning fluid and water in the tank, so that they can smoothly converge to the lowest point. The drain port 15 is used to provide an emptying channel, and under the continuous drive of gravity, the liquid can be discharged quickly and efficiently.

[0026] In some embodiments of this application, such as Figure 3 As shown, the flow regulating component 24 includes a connecting pipe 241 and an outer pipe 242 sleeved on its outer side; the two ends of the connecting pipe 241 are respectively connected to the spray pipe 21 and the water supply pipe 22, and a cleaning liquid inlet trough 243 is opened on the wall of the connecting pipe 241; the outer pipe 242 is connected to the liquid supply pipe 23, and an adjusting ring 244 is rotatably connected to the outer pipe 242, and a plug 245 corresponding to the cleaning liquid inlet trough 243 is provided on the adjusting ring 244; its working principle is that, based on the rotation of the adjusting ring 244, the relative position between the plug 245 and the cleaning liquid inlet trough 243 changes, thereby controlling the opening size of the cleaning liquid inlet trough 243, and thus regulating the flow rate of the cleaning liquid into the connecting pipe 241; this design is compact and reasonable, occupies little installation space, and is not only easy to integrate and install in equipment such as photovoltaic module cleaning robots, but also easy to maintain and repair later, reducing the maintenance cost of the equipment.

[0027] In some embodiments of this application, to reduce the influence of temperature on the cleaning fluid, the delivery pipe 2 is wrapped with an insulation layer. The insulation layer is usually made of materials with low thermal conductivity, such as polyurethane foam or rock wool, which can effectively reduce heat conduction, that is, prevent heat from being directly transferred between the pipe and the external environment. Its wrapping structure can reduce the flow of air on the surface of the pipe, reduce the heat convection caused by air flow, and some special coatings or structures on the surface of the insulation material can also reflect heat radiation, reducing the transfer of heat in the form of radiation. Therefore, it avoids the phenomenon that the cleaning fluid may solidify due to excessively low temperature or decompose or volatilize due to excessively high temperature.

[0028] In some embodiments of this application, the nozzle 3 includes a narrow-angle nozzle 31 for the edge area and a wide-angle nozzle 32 for the center area. The principle of the narrow-angle nozzle 31 is to concentrate the cleaning liquid onto the edge area by narrowing the spray angle, thereby creating higher pressure and impact. This concentrated spraying method can better penetrate the gaps and corners of the edge, removing dirt that is easily overlooked and improving the cleaning quality of the edge area. The purpose of the wide-angle nozzle 32 is to expand the spray angle so that the cleaning liquid can evenly cover the center area over a larger range. In one spraying process, the cleaning liquid can cover a larger area, reducing the number of sprays and thus shortening the cleaning time and improving the cleaning efficiency of the entire photovoltaic module.

[0029] In some embodiments of this application, the water rectifier 5 is configured as a multi-layered mesh structure, and the pore size of the mesh gradually decreases from the end near the storage tank 1 to the end near the nozzle 3. When the cleaning liquid flows from the storage tank 1 into the delivery pipe 2 and enters the water rectifier 5, air bubbles are easily mixed in due to factors such as friction with the pipe wall and local turbulence generated by the pressurization mechanism 4 during the flow process. First, the mesh with a larger pore size near the storage tank 1 performs preliminary diversion and coarse filtration of the cleaning liquid, intercepting large particulate impurities while also initially interfering with larger air bubbles and changing their shape. As the cleaning liquid continues to flow towards the mesh layer with gradually decreasing pore size, the air bubbles... The narrow flow channel is subjected to stronger shearing and squeezing forces, making it difficult to maintain its original shape and forcing it to break. The continuous changes in the flow state of the cleaning fluid cause the bubbles to rise and be expelled. After such multi-layer mesh processing, the cleaning fluid that finally reaches nozzle 3 not only has significantly reduced impurities and a uniform and stable water flow, but also effectively eliminates bubbles. This provides a strong guarantee for nozzle 3 to spray the cleaning fluid evenly and stably, thereby improving the cleaning effect of photovoltaic modules and the stability of equipment operation. It also reduces problems such as nozzle clogging and equipment wear caused by bubbles and impurities. It is suitable for cleaning fluids with different levels of pollution and complex working environments, and is easy to maintain and replace.

[0030] The spraying component of this utility model can be used in various types of photovoltaic module cleaning robots. Compared with existing photovoltaic module cleaning robots, its unique design allows for flexible adjustment of the cleaning liquid ratio, improved cleaning effect, reduced damage to photovoltaic modules, lower maintenance costs, and adaptability to complex environments.

[0031] The present invention relates to a liquid spraying component and a photovoltaic module cleaning robot. The installation, connection, or setting methods are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A liquid spray assembly, comprising: The system includes a storage tank (1), a delivery pipe (2), a nozzle (3), a pressurizing mechanism (4), and a water rectifier (5). The storage tank (1) contains cleaning fluid and has a filling port (11). One end of the delivery pipe (2) is connected to the storage tank (1), and the other end is connected to the nozzle (3). There are multiple nozzles (3), which are spaced apart on the delivery pipe (2), and the spray direction of each nozzle (3) is towards the surface of the photovoltaic module. The pressurizing mechanism (4) and the water rectifier (5) are both located on the delivery pipe (2).

2. The fluid spray assembly of claim 1, wherein, The liquid storage tank (1) is provided with a partition (12) to divide the liquid storage tank (1) into a water storage tank (13) and a cleaning liquid storage tank (14); the delivery pipe (2) includes a nozzle (21), a water delivery pipe (22) and a liquid delivery pipe (23), the nozzle (3) is provided on the nozzle (21), and a flow regulator (24) is provided at the end of the nozzle (21) away from the nozzle (3). The two ends of the water delivery pipe (22) are respectively connected to the water storage tank (13) and the flow regulator (24), and the two ends of the liquid delivery pipe (23) are respectively connected to the cleaning liquid storage tank (14) and the flow regulator (24).

3. The fluid spray assembly of claim 2, wherein, The bottoms of the cleaning fluid storage tank (14) and the water storage tank (13) are both inclined, and each has a drain port (15) at the lowest point.

4. The fluid spray assembly of claim 2, wherein, The flow regulating component (24) includes a connecting pipe (241) and an outer pipe (242) sleeved on its outside; the two ends of the connecting pipe (241) are respectively connected to the spray pipe (21) and the water supply pipe (22), and a cleaning liquid inlet groove (243) is provided on the wall of the connecting pipe (241); the outer pipe (242) is connected to the liquid supply pipe (23), and an adjusting ring (244) is rotatably connected to the outer pipe (242), and a plug (245) corresponding to the cleaning liquid inlet groove (243) is provided on the adjusting ring (244).

5. The fluid spray assembly of claim 1, wherein, The conveying pipe (2) is wrapped with an insulation layer.

6. The fluid spray assembly of claim 1, wherein, The nozzle (3) includes a narrow-angle nozzle (31) for the edge area and a wide-angle nozzle (32) for the center area.

7. The fluid spray assembly of claim 1, wherein, The water rectifier (5) is configured with a multi-layer mesh structure, and the aperture of the mesh gradually decreases from the end near the liquid storage tank (1) to the end of the nozzle (3).

8. A photovoltaic module cleaning robot, characterized in that, Includes the liquid spraying assembly as described in any one of claims 1-7.

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