A high pressure jetting device for a photovoltaic solar cleaning robot

Abstract

The utility model discloses a high pressure injection device for photovoltaic solar energy cleaning robot, including the frame, be equipped with booster pump and spray head on the frame, and the spray head includes the front -positioned spray head and rear -positioned spray head respectively located frame front and rear, and the output of booster pump is connected with the parallelly arranged cleaning agent booster tank and fresh water booster tank between the input of spray head through the pipeline, the input and output of cleaning agent booster tank are connected with first solenoid valve and third solenoid valve respectively, and the input and output of fresh water booster tank are connected with second solenoid valve and fourth solenoid valve respectively, and the output between third solenoid valve and the output of fourth solenoid valve is also connected with fifth solenoid valve, booster pump, first solenoid valve, third solenoid valve, second solenoid valve, fourth solenoid valve and fifth solenoid valve all are connected with controller electrically. The high pressure injection device for photovoltaic solar energy cleaning robot provided by the utility model has wide cleaning range and good cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic solar cleaning robots, and in particular to a high-pressure jetting device for photovoltaic solar cleaning robots. Background Technology

[0002] With the increasing global demand for clean energy, photovoltaic (PV) solar energy, as an important renewable energy source, is seeing its application scale continuously expand. As the core component that converts solar energy into electricity, the power generation efficiency of PV solar panels is directly affected by the cleanliness of their surface. The accumulation of dust, dirt, and other impurities on the surface of solar panels significantly reduces light transmittance, thereby reducing power generation. Therefore, regularly cleaning PV solar panels to maintain their surface cleanliness is a crucial step in improving PV power generation efficiency and ensuring the stable operation of PV power plants.

[0003] Most photovoltaic solar panel cleaning robots currently on the market use a direct connection to a tap water pipe and are equipped with roller brushes for cleaning. While this method can remove dust and dirt from the surface of solar panels to some extent, it has several limitations. For example, some cleaning robots rely on an external water supply, making them unable to perform cleaning work properly in locations far from or with inconvenient water sources, thus limiting their application. Furthermore, roller brush cleaning is ineffective at cleaning stubborn stains, and the roller brushes wear down easily over time, requiring frequent replacement and increasing maintenance costs. In addition, roller brush cleaning may cause minor scratches on the solar panel surface due to friction, affecting its light transmittance and lifespan.

[0004] Therefore, current photovoltaic solar panel cleaning robots have the following technical shortcomings: (1) Water source dependence problem: Traditional cleaning robots are directly connected to tap water pipes, which makes their working range strictly limited by the location of water sources. In some remote areas or photovoltaic power stations with complex terrain, finding suitable water sources and laying water pipes is costly and difficult to implement, making it difficult to carry out cleaning work effectively and affecting the cleaning frequency and power generation efficiency of solar panels.

[0005] (2) Limited cleaning effect: The roller brush cleaning method is not suitable for completely removing some strongly adhesive dirt, such as bird droppings and oil stains. The friction between the roller brush and the surface of the solar panel is limited, and it cannot penetrate into the dirt to peel it off, resulting in residues after cleaning, which affects the light absorption effect of the solar panel.

[0006] (3) High maintenance costs: As a consumable part, the roller brush will wear down due to frequent friction with the surface of the solar panel during long-term use. The cleaning effect of the worn roller brush decreases, and it needs to be replaced in time, which not only increases the operating cost of the equipment, but also affects the continuity of cleaning work. Moreover, replacing the roller brush requires professional personnel to operate, which further increases labor costs. Utility Model Content

[0007] The purpose of this invention is to provide a high-pressure jetting device for photovoltaic solar cleaning robots, which has a wide cleaning range and good cleaning effect.

[0008] To achieve the above objectives, this utility model provides a high-pressure spraying device for a photovoltaic solar cleaning robot, comprising a frame on which a booster pump and a nozzle are mounted. The nozzle includes a front nozzle and a rear nozzle located at the front and rear of the frame, respectively. A cleaning agent booster tank and a water booster tank are connected in parallel via a pipe between the output end of the booster pump and the input end of the nozzle. A first solenoid valve and a third solenoid valve are connected to the input and output ends of the cleaning agent booster tank, respectively. A second solenoid valve and a fourth solenoid valve are connected to the input and output ends of the water booster tank, respectively. A fifth solenoid valve is also connected between the output ends of the third and fourth solenoid valves. The booster pump, the first solenoid valve, the third solenoid valve, the second solenoid valve, the fourth solenoid valve, and the fifth solenoid valve are all electrically connected to a controller.

[0009] As a further improvement of this utility model, the cleaning agent pressurizing tank is equipped with a first pressure sensor, the clean water pressurizing tank is equipped with a second pressure sensor, and the pressurizing pump is equipped with a third pressure sensor. The first pressure sensor, the second pressure sensor, and the third pressure sensor are all electrically connected to the controller.

[0010] As a further improvement of this utility model, the nozzles of both the front nozzle and the rear nozzle are arranged downwards.

[0011] As a further improvement of this utility model, a pressure stabilizing plate is provided at both the front and rear of the vehicle frame. The bottom surface of the pressure stabilizing plate at the front of the vehicle frame is provided with at least two front nozzles. The inner cavity of the pressure stabilizing plate is connected to the input end of the front nozzle and to the output end of the third solenoid valve. The bottom surface of the pressure stabilizing plate at the rear of the vehicle frame is provided with at least two rear nozzles. The inner cavity of the pressure stabilizing plate is connected to the input end of the rear nozzle and to the output end of the fourth solenoid valve.

[0012] As a further improvement of this utility model, the voltage stabilizer is rotatably connected to the vehicle frame, and the vehicle frame is provided with a rotation drive assembly that is linked to the voltage stabilizer.

[0013] As a further improvement of this utility model, the rotation drive assembly includes a rotation motor mounted on the frame, the output shaft of the rotation motor is connected to a drive gear, the voltage stabilizing plate is coaxially connected to a driven gear, and the drive gear and the driven gear are linked together.

[0014] Beneficial effects Compared with existing technologies, the advantages of the high-pressure jetting device for photovoltaic solar cleaning robots of this invention are as follows: 1. By separately setting up pressurized tanks for cleaning agents and clean water, the front and rear nozzles can spray cleaning agents or clean water as needed. This allows the photovoltaic solar cleaning robot to break free from dependence on external water sources, expanding its working range and enabling it to perform cleaning work normally in various environments. Furthermore, by pressurizing the tanks with a booster pump, the clean water and cleaning solution are sprayed out at high pressure, more effectively removing stubborn dirt from the solar panel surface, ensuring a clean and tidy surface and improving light absorption efficiency.

[0015] 2. By installing pressure sensors in the booster tank and booster pump, and cooperating with various solenoid valves, the water and cleaning agent can be sprayed at a pressure exceeding 1MPa. This ensures the cleaning effect while effectively reducing the cleaning pressure and wear of the roller brush on the photovoltaic panel surface. It avoids the increased costs caused by rapid wear and frequent replacement of the roller brush, and reduces the maintenance workload and labor costs of the equipment.

[0016] 3. The rotating drive assembly drives the pressure stabilizing plate to rotate, allowing multiple nozzles on the pressure stabilizing plate to spray water or cleaning agent while rotating with the pressure stabilizing plate, resulting in more even spraying and improved cleaning effect.

[0017] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 One of the perspective views of a high-pressure jet device used in a photovoltaic solar cleaning robot; Figure 2 This is the second perspective view of the high-pressure jet device used in photovoltaic solar cleaning robots; Figure 3This is one of the working principle diagrams of a high-pressure jet device used in photovoltaic solar cleaning robots; Figure 4 This is the second schematic diagram of the working principle of the high-pressure jet device used in photovoltaic solar cleaning robots. Detailed Implementation

[0020] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0021] Example The specific embodiments of this utility model are as follows: Figures 1 to 4 As shown, a high-pressure spraying device for a photovoltaic solar cleaning robot includes a frame 1. A booster pump 9 and nozzles are mounted on the frame 1. The nozzles include a front nozzle 2 located at the front of the frame 1 and a rear nozzle 3 located at the rear. A cleaning agent pressurizing tank 4 and a clean water pressurizing tank 5 are connected in parallel via a pipe between the output end of the booster pump 9 and the input end of the nozzles. A first solenoid valve 16 and a third solenoid valve 18 are connected to the input and output ends of the cleaning agent pressurizing tank 4, respectively. A second solenoid valve 17 and a fourth solenoid valve 19 are connected to the input and output ends of the clean water pressurizing tank 5, respectively. A fifth solenoid valve 20 is also connected between the output ends of the third solenoid valve 18 and the fourth solenoid valve 19. The booster pump 9, the first solenoid valve 16, the third solenoid valve 18, the second solenoid valve 17, the fourth solenoid valve 19, and the fifth solenoid valve 20 are all electrically connected to a controller 10. The controller 10 is also electrically connected to the industrial control integrated screen 6 on the chassis 1, allowing personnel to view the working status of the photovoltaic solar cleaning robot through the industrial control integrated screen 6. The booster pump 9 is a Xinweicheng F40P1-CP8DA-MJ4, the controller 10 is a Zhongda Youkong YKHMI,MM-30MR-6MT-F700-FX-B, and the solenoid valve is a Honghui HSY4K normally open series, 2-point normally open DC24V.

[0022] The controller 10 uses a microprocessor as its core and integrates sensor interfaces, solenoid valve control interfaces, and booster pump control interfaces. The controller 10 internally stores preset cleaning programs and parameters, and can automatically adjust the cleaning mode and parameters according to actual conditions.

[0023] The cleaning agent pressurization tank 4 is equipped with a first pressure sensor 12, the clean water pressurization tank 5 is equipped with a second pressure sensor 13, and the booster pump 9 is equipped with a third pressure sensor 14. All three sensors are electrically connected to the controller 10. Each pressure sensor monitors the pressure in the pressurization tanks and the booster pump in real time and transmits the pressure signals to the controller 10. Based on the pressure information from the sensors, the controller 10 automatically controls the start / stop and operating power of the booster pump 9 to ensure the pressure in the pressurization tanks remains stable at a set value (approximately 1 MPa, adjustable by the customer). Simultaneously, according to a preset cleaning program, it precisely controls the opening and closing of the solenoid valve to achieve automatic switching between water and cleaning fluid spraying. The third pressure sensor 14 detects the operating pressure of the booster pump 9. When the value of the third pressure sensor 14 exceeds 30% of the values ​​of the first and second pressure sensors 12 and 13, the power to the booster pump 9 is automatically cut off to activate its protective function.

[0024] The booster pump 9, controller 10, power supply 15, and all solenoid valves are installed inside the frame 1. Both the cleaning agent booster tank 4 and the water booster tank 5 have inlets and outlets. The inlet is used to add cleaning solution or water to the tank, and the outlet is connected to a pipeline. The booster pump 9 injects high-pressure gas into the cleaning agent booster tank 4 and the water booster tank 5, thereby increasing their pressure and improving the atomization effect when the front nozzle 2 and the rear nozzle 3 spray liquid. The liquid pressure is increased to approximately 1 MPa, and the pressure is adjustable, providing sufficient spray power to effectively remove dirt from the surface of the solar panels. The front nozzle 2 and the rear nozzle 3 can evenly atomize the high-pressure liquid into fine water droplets or liquid droplets, expanding the cleaning area, improving the cleaning effect, and creating a uniform spray fan when the liquid is sprayed out.

[0025] Each solenoid valve can precisely control the flow path and spray timing of the liquid by opening and closing. When water is needed for cleaning, the solenoid valve connected to the clean water pressurization tank 5 is opened, while the solenoid valve connected to the cleaning fluid pressurization tank 4 is closed; conversely, when cleaning fluid is needed, the opposite operation is performed.

[0026] Both the front nozzle 2 and the rear nozzle 3 have their nozzles facing downwards. Two pressure stabilizing plates 00 are located at the front and rear of the frame 1, respectively. Multiple front nozzles 2 are mounted on the bottom surface of the two pressure stabilizing plates 00 located at the front of the frame 1. The inner cavity of the pressure stabilizing plate 00 is connected to the input end of the front nozzle 2 and to the output end of the third solenoid valve 18 via a flexible hose. Multiple rear nozzles 3 are mounted on the bottom surface of the two pressure stabilizing plates 00 located at the rear of the frame 1. The inner cavity of the pressure stabilizing plate 00 is connected to the input end of the rear nozzle 3 and to the output end of the fourth solenoid valve 19 via a flexible hose.

[0027] Each voltage regulator plate 00 is rotatably connected to the frame 1, and the frame 1 is equipped with a rotation drive assembly that is linked to the voltage regulator plate 00. Specifically, the rotation drive assembly includes a rotation motor 71 mounted on the frame 1. The output shaft of the rotation motor 71 is connected to a drive gear 72, and the voltage regulator plate 00 is coaxially connected to a driven gear 73. The drive gear 72 and the driven gear 73 mesh. When the output shaft of the rotation motor 71 rotates, the drive gear 72 drives the driven gear 73 to rotate, thereby causing the voltage regulator plate 00 to rotate relative to the frame 1 around a vertical axis. Since the voltage regulator plate 00 is connected to the third solenoid valve 18 and the fourth solenoid valve 19 through a flexible hose, as long as the voltage regulator plate 00 rotates alternately in the clockwise and counterclockwise directions, and the rotation angle is controlled within a certain range (such as within 90°), the flexible hose will not be damaged. In this embodiment, a single rotation motor 71 controls the rotation of two voltage regulator plates 00 simultaneously, specifically by one drive gear 72 meshing with two driven gears 73.

[0028] Since some of the photovoltaic solar panels are arranged at an angle, in order to facilitate the photovoltaic solar cleaning robot to move stably on the angled photovoltaic solar panels without slipping, multiple suction cups 81 can be installed on the wheels 8 of the frame 1 to increase the adhesion between the wheels 8 and the photovoltaic solar panels.

[0029] When the photovoltaic solar cleaning robot in this embodiment starts working, the specific working method is as follows: Figure 3 Power supply 15 supplies power to controller 10 and all electrical components. When the photovoltaic solar cleaning robot receives a cleaning instruction, controller 10 sends a signal, and the photovoltaic solar cleaning robot begins to move forward and starts booster pump 9. At this time, the first solenoid valve 16 is in the open state, and the second solenoid valve 17, the third solenoid valve 18, and the fourth solenoid valve 19 are all in the closed state. Booster pump 9 only pressurizes the cleaning liquid pressurization tank 4. When the first pressure sensor 12 reaches the set pressure, the first solenoid valve 16 will be de-energized and the valve will close. Then the third solenoid valve 18 will start at the same time, and the front nozzle 2 of the equipment will spray a fan-shaped cleaning liquid, which will be sprayed evenly onto the photovoltaic panel. When the pressure value of the first pressure sensor 12 is lower than the set pressure by 20%, the equipment will stop moving forward. It can only continue to move forward after the booster pump 9 increases the pressure of the cleaning liquid pressurization tank 4 to the set pressure.

[0030] When the photovoltaic solar cleaning robot moves to the edge of the photovoltaic panel, it will automatically detect the edge. Once the edge is detected for the first time, the robot will automatically return along its original path. Simultaneously, the controller 10 will issue a control command. For details on its operation, please refer to [link to documentation]. Figure 4The booster pump 9 is in operation, with the first solenoid valve 16 and the third solenoid valve 18 closed, the second solenoid valve 17 open, and the fourth solenoid valve 19 and the fifth solenoid valve 20 closed, until the pressure of the second pressure sensor 13 reaches the set value. At this point, the second solenoid valve 17 closes, and the fourth solenoid valve 19 and the fifth solenoid valve 20 open, allowing clean water to spray simultaneously from the front nozzle 2 and the rear nozzle 3. During this process, the pressure stabilizing plate 00 drives the front nozzle 2 and the rear nozzle 3 to rotate, improving the uniformity of cleaning. When the pressure value of the second pressure sensor 13 is 20% lower than the set pressure, the photovoltaic solar cleaning robot will stop moving forward. It can only continue moving forward after the booster pump 9 increases the pressure of the clean water booster tank 5 to the set pressure, until the photovoltaic solar cleaning robot moves to the edge of the photovoltaic panel. Once the device detects the edge, the fourth solenoid valve 19 and the fifth solenoid valve 20 close, and the front nozzle 2 and the rear nozzle 3 stop spraying water.

[0031] When the photovoltaic solar cleaning robot detects an edge an even number of times, its wheels will automatically complete a 90° turn, and the robot will translate one width of itself, then repeat the process. Figure 3 The robot works by cleaning the entire photovoltaic panel. Each of its four wheels 8 is controlled by a first motor, with the swing axes vertically aligned. When the swing angle of the four wheels 8 is 0°, the wheels face forward; when the swing angle is 90°, the frame 1 can move left or right. Each wheel 8 is connected to a second motor, which drives the wheel 8 to rotate around a horizontal axis, thus propelling the robot forward.

[0032] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A high-pressure jetting device for a photovoltaic solar cleaning robot, comprising a frame (1), characterized in that, The frame (1) is equipped with a booster pump (9) and a nozzle. The nozzle includes a front nozzle (2) and a rear nozzle (3) located at the front and rear of the frame (1), respectively. The output end of the booster pump (9) and the input end of the nozzle are connected by a pipe to a cleaning agent booster tank (4) and a clean water booster tank (5) arranged in parallel. The input end and the output end of the cleaning agent booster tank (4) are respectively connected to a first solenoid valve (16) and a third solenoid valve (18). The input end and the output end of the clean water booster tank (5) are respectively connected to a second solenoid valve (17) and a fourth solenoid valve (19). A fifth solenoid valve (20) is also connected between the output end of the third solenoid valve (18) and the output end of the fourth solenoid valve (19). The booster pump (9), the first solenoid valve (16), the third solenoid valve (18), the second solenoid valve (17), the fourth solenoid valve (19) and the fifth solenoid valve (20) are all electrically connected to the controller (10).

2. The high-pressure jetting device for a photovoltaic solar cleaning robot according to claim 1, characterized in that, The cleaning agent pressurizing tank (4) is equipped with a first pressure sensor (12), the clean water pressurizing tank (5) is equipped with a second pressure sensor (13), and the pressurizing pump (9) is equipped with a third pressure sensor (14). The first pressure sensor (12), the second pressure sensor (13), and the third pressure sensor (14) are all electrically connected to the controller (10).

3. A high-pressure jetting device for a photovoltaic solar cleaning robot according to claim 1 or 2, characterized in that, The nozzles of both the front nozzle (2) and the rear nozzle (3) are arranged downwards.

4. A high-pressure jetting device for a photovoltaic solar cleaning robot according to claim 3, characterized in that, The vehicle frame (1) is provided with a pressure stabilizing plate (00) at the front and rear. The pressure stabilizing plate (00) at the front of the vehicle frame (1) is provided with at least two front nozzles (2) on its bottom surface. The inner cavity of the pressure stabilizing plate (00) is connected to the input end of the front nozzle (2) and to the output end of the third solenoid valve (18). The pressure stabilizing plate (00) at the rear of the vehicle frame (1) is provided with at least two rear nozzles (3) on its bottom surface. The inner cavity of the pressure stabilizing plate (00) is connected to the input end of the rear nozzle (3) and to the output end of the fourth solenoid valve (19).

5. A high-pressure jetting device for a photovoltaic solar cleaning robot according to claim 4, characterized in that, The voltage regulator (00) is rotatably connected to the frame (1), and the frame (1) is provided with a rotation drive assembly that is linked to the voltage regulator (00).

6. A high-pressure jetting device for a photovoltaic solar cleaning robot according to claim 5, characterized in that, The rotation drive assembly includes a rotation motor (71) mounted on the frame (1), the output shaft of the rotation motor (71) is connected to a drive gear (72), and the voltage stabilizer (00) is coaxially connected to a driven gear (73). The drive gear (72) and the driven gear (73) are linked together.

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