Photovoltaic module cleaning device

Abstract

The utility model belongs to the field of photovoltaic module recycling, and particularly relates to a photovoltaic module cleaning device which comprises a device body, a cleaning table, a guide rail and a pressurizing spray-washing assembly. The cleaning table is arranged in the device body, and a wastewater collecting tank is formed between the cleaning table and the device body; the guide rail is arranged on the side wall of the device body and is higher than the surface of the cleaning table, and the pressurized spray-washing assembly is movably arranged in the guide rail; the pressurized spray-washing assembly is provided with a nozzle facing the cleaning table, and the pressurized spray-washing assembly is connected with a water inlet pipe and an air inlet pipe. The system further comprises a water circulation treatment system and a compressed air treatment system. The other end of the water circulation treatment system is connected with a water inlet pipe; the compressed air processing system is connected with the air inlet pipe. Compared with the prior art, the defect that in the prior art, the cleaning capacity is insufficient is overcome, high-pressure gas-water mixtures are adopted for flushing, and efficient and sufficient cleaning of the surface of the photovoltaic module is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of photovoltaic component recycling, and specifically relates to a photovoltaic component cleaning device. Background Art

[0002] The installed capacity of my country's photovoltaic power stations continues to increase, but this also brings about the problem of component recycling. Due to the special working environment of photovoltaic components, the recycled photovoltaic components are highly dirty, which brings challenges to subsequent recycling and purification.

[0003] Currently, most recycling processes do not have a cleaning step and directly involve crushing and separation, which is not conducive to the purification of valuable elements and will bring risks such as dust and equipment clogging.

[0004] For example, CN117424549A discloses a slidable self-cleaning spraying device for photovoltaic components and a spraying method thereof, wherein the slidable self-cleaning spraying device for photovoltaic components comprises a first support frame; a second support frame, a reciprocating control component, a rotating component, a purge air duct, a spray water pipe, a brush, a photovoltaic panel, a wastewater recovery component, a fan, an air filter box, a water storage tank, a liquid supply component, an exhaust pipe, an air supply pipe, a water pump and a pipeline, an overflow pipe, a second upper cover, a pipe clamp and a nozzle. This solution sprays and cleans the photovoltaic components and circulates water resources to reduce resource waste and improve the cleaning effect. However, in actual operation, it is difficult to remove firmly adhered dirt by only relying on the spraying of circulating water, and repeated cleaning is required, which will lead to waste of resources and energy.

[0005] Therefore, based on the deficiencies in the prior art, the utility model discloses a photovoltaic module cleaning device. Utility Model Content

[0006] The purpose of the utility model is to provide a photovoltaic module cleaning device in order to solve at least one of the above problems, so as to solve the defect of insufficient cleaning ability in the prior art. This solution achieves efficient and sufficient cleaning of the surface of the photovoltaic module by adopting a high-pressure air-water mixture for flushing.

[0007] The purpose of the utility model is achieved through the following technical solutions:

[0008] A photovoltaic module cleaning device is used for cleaning the surface of a photovoltaic module, the cleaning device comprising a device body, a cleaning table, a guide rail and a pressurized spray cleaning component;

[0009] The cleaning platform is arranged inside the device body and is used to carry the photovoltaic modules. The gap between the cleaning platform and the device body forms a wastewater collection tank.

[0010] The guide rail is arranged on the side wall of the device body and is arranged higher than the surface of the washing table. The extension direction of the guide rail is consistent with the surface of the photovoltaic module. The pressurized spray cleaning component is movably arranged in the guide rail.

[0011] The pressurized spray cleaning assembly is provided with a nozzle facing the cleaning table, and the pressurized spray cleaning assembly is respectively connected to the water inlet pipe and the air inlet pipe;

[0012] The cleaning device also includes a water circulation treatment system and a compressed air treatment system; the water circulation treatment system: one end is connected to the wastewater collection tank, and the other end is connected to the water inlet pipe, which is used to provide circulating water to the pressurized spray cleaning component; the compressed air treatment system is connected to the air inlet pipe, which is used to provide compressed gas to the pressurized spray cleaning component.

[0013] Preferably, the water circulation treatment system includes a sewage inlet pipe, a sewage treatment device, a filter residue storage box, a water storage tank, a circulating water pump and a circulating water outlet; one end of the sewage inlet pipe is connected to the wastewater collection tank, and the other end is connected to the sewage treatment device; the sewage treatment device is a solid-liquid separation equipment, which is respectively connected to the filter residue storage box and the water storage tank; the water storage tank is connected to the circulating water pump and is connected to the water inlet pipe through the circulating water outlet.

[0014] Preferably, the water storage tank is also connected to a water tank drain outlet and a water tank water inlet respectively.

[0015] Preferably, the compressed air processing system comprises a compressed air inlet, an air storage tank, a gas booster pump and a compressed gas outlet; the compressed air inlet, the air storage tank, the gas booster pump and the compressed gas outlet are connected in sequence, and the compressed gas outlet is connected to the air inlet pipe.

[0016] Preferably, the compressed air inlet is connected to the atmosphere, or is connected to an external air supply device.

[0017] Preferably, the water circulation treatment system and the compressed air treatment system are arranged inside the cleaning station.

[0018] Preferably, the pressurized spray cleaning assembly is arranged at a height 3-10 cm higher than the photovoltaic assembly.

[0019] Preferably, the cleaning device further comprises a brush roller, which is movably arranged in the guide rail and is spaced apart from the pressurized spray cleaning component.

[0020] Preferably, a plurality of the nozzles are spaced apart along the length direction of the pressurized spray cleaning assembly.

[0021] Preferably, there is an angle between the spraying direction of the nozzle and the surface of the photovoltaic module.

[0022] The working principle of the utility model is:

[0023] When the cleaning device is working, the water inlet pipe and the air inlet pipe supply water and compressed air to the pressurized spray cleaning component respectively. After being fully mixed inside the pressurized spray cleaning component to form an air-water mixture, it is sprayed out from the nozzle. The air-water mixture contains a large number of bubbles. Therefore, during the cleaning process, in addition to the conventional impact force to remove dirt, there are bubbles attached to the surface of the photovoltaic module and remove the dirt based on surface tension.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] The cleaning device can realize effective and automated cleaning of photovoltaic modules, and is suitable as a cleaning process link in the recycling production line of waste photovoltaic modules. By mixing compressed air in the cleaning circulating water, the contact area between water and the cleaning surface can be increased, the cleaning effect can be improved, and wastewater can be recycled, which can save water and effectively improve the cleaning capacity and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the cleaning device;

[0027] Figure 2 It is a schematic cross-sectional view of the structure of the cleaning station;

[0028] In the figure: 1-wastewater collection tank; 2-cleaning table; 3-guide rail; 4-photovoltaic module; 5-pressurized spray cleaning assembly; 6-inlet pipe; 7-brush roller; 8-water inlet pipe; 21-water circulation treatment system; 210-sewage inlet pipe; 211-sewage treatment device; 212-filter residue storage box; 213-water tank drain outlet; 214-water tank inlet; 215-water storage tank; 216-circulating water pump; 217-circulating water outlet; 22-compressed air treatment system; 220-compressed air inlet; 221-gas storage tank; 222-gas booster pump; 223-compressed gas outlet. DETAILED DESCRIPTION

[0029] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example

[0031] A photovoltaic module 4 cleaning device, such as Figure 1 and Figure 2 As shown, it is used for cleaning the surface of a photovoltaic module 4, and the cleaning device includes a device body, a cleaning table 2, a guide rail 3 and a pressurized spray cleaning component 5;

[0032] The cleaning platform 2 is arranged inside the device body and is used to carry the photovoltaic module 4. The gap between the cleaning platform 2 and the device body forms a wastewater collection tank 1.

[0033] The guide rail 3 is arranged on the side wall of the device body and is higher than the surface of the cleaning table 2. The extension direction of the guide rail 3 is consistent with the surface of the photovoltaic component 4. The pressurized spray cleaning component 5 is movably arranged in the guide rail 3.

[0034] The pressurized spray cleaning assembly 5 is provided with a nozzle facing the cleaning station 2, and the pressurized spray cleaning assembly 5 is connected to the water inlet pipe 8 and the air inlet pipe 6 respectively;

[0035] The cleaning device also includes a water circulation treatment system 21 and a compressed air treatment system 22; the water circulation treatment system 21: one end is connected to the wastewater collection tank 1, and the other end is connected to the water inlet pipe 8, which is used to provide circulating water to the pressurized spray cleaning component 5; the compressed air treatment system 22 is connected to the air inlet pipe 6, which is used to provide compressed gas to the pressurized spray cleaning component 5.

[0036] More specifically, in this embodiment:

[0037] like Figure 1 As shown, the photovoltaic module 4 cleaning device includes a device body, a cleaning platform 2, a guide rail 3, a pressurized spray cleaning component 5 and a brush roller 7. The cleaning platform 2 is arranged inside the device body, and the gap formed between the two constitutes a wastewater collection tank 1; the guide rail 3 is arranged higher than the cleaning platform 2, and the pressurized spray cleaning component 5 and the brush roller 7 are arranged in the guide rail 3 in a front-to-rear interval, and can move along the guide rail 3. The pressurized spray cleaning component 5 is also connected to an air inlet pipe 6 and a water inlet pipe 8, and a plurality of nozzles are arranged at intervals on the surface facing the cleaning platform 2.

[0038] The upper surface of the cleaning platform 2 is used to carry the photovoltaic components 4 to be cleaned, and a water circulation treatment system 21 and a compressed air treatment system 22 are also arranged inside the cleaning platform 2.

[0039] like Figure 2As shown, the water circulation treatment system 21 includes a sewage inlet pipe 210, a sewage treatment device 211, a filter residue storage box 212, a water tank drain port 213, a water tank water inlet 214, a water storage tank 215, a circulating water pump 216 and a circulating water outlet 217. One end of the sewage inlet pipe 210 is connected to the wastewater collection tank 1, and is used to introduce the sewage collected in the wastewater collection tank 1 into the water circulation treatment system 21 for treatment; the other end of the sewage inlet pipe 210 is connected to the water inlet of the sewage treatment device 211, and the sewage introduced into the water circulation treatment system 21 is directly sent to the sewage treatment device 211 for sewage treatment. The sewage treatment device 211 is a solid-liquid separation device, specifically a filtering device, which performs solid-liquid separation on the introduced sewage; the sewage treatment device 211 is respectively connected to the filter residue storage box 212 and the water storage tank 215, and the separated solid filter residue falls into the filter residue storage box 212 under the action of gravity, and the circulating water obtained by filtration enters the water storage tank 215 for storage. The water tank 215 and the filter residue storage tank 212 need to be cleaned regularly to prevent sedimentation and blockage. The water tank 215 is also connected with a water tank inlet 214 and a water tank outlet 213, which are used to supplement the water that is inevitably lost during the cleaning process and the circulation process from the outside, and to drain and replace the water after long-term circulation. A water pump is set downstream of the water tank 215 to draw out and pressurize the circulating water in the water tank 215, and then draw it out to the water inlet pipe 8 through the circulating water outlet 217 to provide pressurized water to the pressurized spray washing component 5.

[0040] For example Figure 2 The compressed air processing system 22 includes a compressed air inlet 220, an air tank 221, a gas booster pump 222 and a compressed air outlet 223. The compressed air inlet 220 introduces external gas into the air tank 221 in the compressed air processing system 22 for storage, and the gas booster pump 222 extracts and pressurizes the gas in the air tank 221 and then leads it to the air inlet pipe 6 through the compressed gas outlet 223 to provide compressed gas to the pressurized spraying assembly 5. The compressed air inlet 220 can be directly connected to the atmosphere and use air as a compressed gas source; or, the compressed air inlet 220 can be connected to an external gas supply device, such as an external compressed gas tank, gas making equipment, etc.

[0041] The guide rail 3 is a pair of trough bodies opened on the inner side and two opposite side walls of the device body, and the two ends of the pressurized spray washing assembly 5 and the brush roller 7 are respectively slidably arranged in the guide rails 3 on both sides. The extension direction of the guide rail 3 is consistent with the surface of the photovoltaic module 4. As an example, a tooth structure can be arranged in the trough body, and rotating disks are respectively arranged at the two ends of the pressurized spray washing assembly 5 and the brush roller 7. The rotating disk is assembled in the trough body and is circumferentially provided with tooth edges that mesh with the tooth structure. The pressurized spray washing assembly 5 and the brush roller 7 are also respectively provided with a screw motor connected to the rotating disk, and then the rotation of the rotating disk is driven by the screw motor to make it move forward and backward along the guide rail 3; or, a cylinder can be arranged at the end of the trough body, and the ends of the cylinder are respectively connected to the pressurized spray washing assembly 5 and the brush roller 7 through adapters, and then the forward and backward movement of the two along the guide rail 3 can be realized by the push-pull action of the cylinder.

[0042] The inside of the pressurized spray cleaning component 5 is approximately divided into two interconnected structures, wherein the first structure is connected to the air inlet pipe 6 and the water inlet pipe 8 at both ends, respectively, and the high-pressure water flow and the high-pressure air flow are mixed in the first structure and then enter the second structure. The second structure is provided with nozzles spaced along the length direction, and the sprayed gas-water mixture can cover the surface of the photovoltaic component 4. In order to make the pressure of the gas-water mixture at each nozzle basically equal, the first structure can be set as an "I"-shaped structure; wherein one side is a short side, connected to the air inlet pipe 6 and the water inlet pipe 8 at both ends; one side is a long side, which is the same length as the second structure, and is provided with long strip holes arranged alternately with the nozzles, so that the mixed gas-water mixture can pass through and be distributed more evenly in the second structure; the connecting section between the short side and the long side fully mixes the gas and water. The spray direction of the nozzle is set in the form of an angle with the surface of the photovoltaic component 4.

[0043] The brush roller 7 is arranged behind the pressurized spray cleaning component 5 and is used to remove water stains remaining on the surface of the photovoltaic component 4 after washing.

[0044] When the cleaning device is working, the water inlet pipe 8 and the air inlet pipe 6 respectively inject high-pressure water flow and compressed air into the pressurized spray cleaning component 5, and the two are fully mixed in the pressurized spray cleaning component 5 and then sprayed out by the nozzle; wherein the pressurized spray cleaning component 5 is parallel to the short side of the photovoltaic component 4 and moves along the long side direction of the photovoltaic component 4. A plurality of nozzles are arranged on the pressurized spray cleaning component 5, which can cover the entire cleaning table 2. A brush roller 7 is arranged behind the pressurized spray cleaning component 5, and both of them move along the guide rail 3, and can move forward and backward at the same time to clean the component. The spraying water pressure is set to 3-8MPa, the mixed water flow rate is 1-3m / s, the moving forward speed of the pressurized spray cleaning component 5 and the brush roller 7 is 0.1-1.5m / s, the height of the guide rail 3 is 3-10cm above the photovoltaic component 4, and the angle between the spraying direction of the nozzle and the surface of the photovoltaic component 4 is controlled to be between 0-90° and not 0°.

[0045] Furthermore, visual sensors, such as cameras or video cameras, are also provided on the inner wall surfaces of the device body on both sides of the cleaning station 2, which can visually capture and identify the size of the photovoltaic module 4 placed on the cleaning station 2, and then adjust the stroke of the pressurized spray cleaning component 5 and the brush roller 7 as needed. It should be noted that the methods and equipment used in this process can directly adopt existing technologies or commercially available products. It automatically returns to the initial position after a cleaning stroke, and the number of cleaning strokes can be set to 1 to 3 times according to the dirtiness. The photovoltaic module 4 can be transferred to and from the upper and lower cleaning stations 2 by means of a transfer device (mechanical arm / conveyor belt / manual, etc.).

[0046] The cleaning device can further cooperate with an external control device to realize automatic program control, such as a PLC controller, a computer, etc. The control device is electrically connected to a circulating water pump 216 that controls water supply, a gas booster pump 222 that controls air supply, and a driving component (such as a motor, a cylinder, etc.) that controls the pressurized spray cleaning component 5 and the brush roller 6 to run along the guide rail 3.

[0047] The device can realize automatic cleaning of photovoltaic modules 4 and is suitable for the cleaning process of the waste photovoltaic module 4 recycling production line. By mixing compressed air in the cleaning water and increasing the contact area between water and the cleaning surface, it can save water and effectively improve the cleaning capacity and efficiency.

[0048] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A photovoltaic module cleaning device, characterized in that: Used for cleaning the surface of a photovoltaic module (4), the cleaning device comprises a device body, a cleaning table (2), a guide rail (3) and a pressurized spray cleaning component (5); The cleaning platform (2) is arranged inside the device body and is used to carry the photovoltaic module (4); the gap between the cleaning platform (2) and the device body forms a wastewater collection tank (1); The guide rail (3) is arranged on the side wall of the device body and is higher than the surface of the cleaning table (2); the extension direction of the guide rail (3) is consistent with the surface of the photovoltaic component (4); and the pressurized spray cleaning component (5) is movably arranged in the guide rail (3); The pressurized spray cleaning component (5) is provided with a nozzle facing the cleaning table (2), and the pressurized spray cleaning component (5) is respectively connected to the water inlet pipe (8) and the air inlet pipe (6); The cleaning device further comprises a water circulation treatment system (21) and a compressed air treatment system (22); the water circulation treatment system (21) is connected to the wastewater collection tank (1) at one end and connected to the water inlet pipe (8) at the other end for providing circulating water to the pressurized spray cleaning component (5); the compressed air treatment system (22) is connected to the air inlet pipe (6) for providing compressed air to the pressurized spray cleaning component (5).

2. A photovoltaic module cleaning device according to claim 1, characterized in that: The water circulation treatment system (21) comprises a sewage inlet pipe (210), a sewage treatment device (211), a filter residue storage box (212), a water storage tank (215), a circulating water pump (216) and a circulating water outlet (217); one end of the sewage inlet pipe (210) is connected to a wastewater collection tank (1), and the other end is connected to the sewage treatment device (211); the sewage treatment device (211) is a solid-liquid separation device, which is respectively connected to the filter residue storage box (212) and the water storage tank (215); the water storage tank (215) is connected to the circulating water pump (216) and is connected to the water inlet pipe (8) through the circulating water outlet (217).

3. A photovoltaic module cleaning device according to claim 2, characterized in that: The water storage tank (215) is also respectively connected to a water tank drain outlet (213) and a water tank water inlet (214).

4. A photovoltaic module cleaning device according to claim 1, characterized in that: The compressed air processing system (22) comprises a compressed air inlet (220), an air storage tank (221), a gas booster pump (222) and a compressed gas outlet (223); the compressed air inlet (220), the air storage tank (221), the gas booster pump (222) and the compressed gas outlet (223) are connected in sequence, and the compressed gas outlet (223) is connected to the air inlet pipe (6).

5. A photovoltaic module cleaning device according to claim 4, characterized in that: The compressed air inlet (220) is connected to the atmosphere, or to an external air supply device.

6. A photovoltaic module cleaning device according to claim 1, characterized in that: The water circulation treatment system (21) and the compressed air treatment system (22) are arranged inside the cleaning station (2).

7. A photovoltaic module cleaning device according to claim 1, characterized in that: The pressurized spray cleaning assembly (5) is arranged at a height 3-10 cm higher than the photovoltaic assembly (4).

8. A photovoltaic module cleaning device according to claim 1, characterized in that: The cleaning device further comprises a brush roller (7), wherein the brush roller (7) is movably arranged in the guide rail (3), and the brush roller (7) and the pressurized spray cleaning component (5) are arranged at a distance.

9. A photovoltaic module cleaning device according to claim 1, characterized in that: A plurality of the nozzles are arranged at intervals along the length direction of the pressurized spray cleaning assembly (5).

10. A photovoltaic module cleaning device according to claim 1, characterized in that: There is an angle between the spraying direction of the nozzle and the surface of the photovoltaic module.

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