Photovoltaic module self-cleaning drainage groove flow guide device

Abstract

The invention relates to the technical field of photovoltaic power generation auxiliary equipment, in particular to a photovoltaic module self-cleaning drainage groove flow guiding device which comprises a water tank, the interior of the water tank is divided into a clear water area and a sewage area through a vertically-arranged filtering assembly, a fixed cover is correspondingly arranged above the clear water area, a sliding cover is correspondingly arranged above the sewage area, and the sliding cover is arranged above the sewage area. The sliding cover is slidably assembled on the top surface of the water tank through a sliding assembly, the side wall of the clear water area is fixedly communicated with a water pump, and the side wall of the sewage area is communicated with a blow-off pipe; in rainy days, the water tank is opened through the sliding cover, rainwater is collected and filtered and stored through the built-in multi-stage purification system, clean water is sprayed to the surface of the photovoltaic module through the spraying assembly in sunny days, dust is effectively removed, and the photovoltaic module can be cleaned conveniently. And the sewage quickly and orderly flows into the drainage groove through the flow guide assembly which is optimally designed, so that accumulated dust and accumulated water are reduced.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation auxiliary equipment technology, and in particular to a self-cleaning drainage channel guiding device for photovoltaic modules. Background Technology

[0002] During operation, photovoltaic (PV) modules accumulate a large amount of dust on their surfaces due to natural sedimentation, wind erosion, and the adhesion of air pollutants. These pollutants significantly reduce the photoelectric conversion efficiency of PV cells. Experimental data shows that when the dust coverage on the surface of a PV module reaches 0.5 g / m², the efficiency of the photovoltaic module decreases. 2 At times, power generation efficiency can decrease by 15% to 20%. Dust not only directly blocks the incident light, but the microscopic shadowing effect between its particles can also cause uneven distribution of light spots, exacerbate the local hot spot effect of the battery, and long-term accumulation may cause accelerated aging of the internal structure of the module, seriously affecting the system life and power generation stability.

[0003] Natural rainfall can help remove some dust from the surface of photovoltaic modules, but its cleaning effect is strictly limited by the frequency of rainfall. During periods without rainfall, most of the cleaning work is done manually using sprayers. Each cleaning requires a large amount of water, which increases economic costs and exacerbates the waste of water resources. Furthermore, with the aggravation of environmental pollution, the rate of dust accumulation on the surface of photovoltaic modules is accelerating, and the frequency of cleaning is also increasing accordingly, leading to an exponential increase in water consumption.

[0004] To address this, a self-cleaning drainage channel guide device for photovoltaic modules is proposed. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to provide a self-cleaning drainage channel guiding device for photovoltaic modules, so as to solve the problems mentioned in the background art that the dust on the surface of photovoltaic modules reduces power generation efficiency, natural rainfall has limited cleaning, and manual spraying is costly and wasteful of water resources.

[0006] The above-mentioned technical problems are solved by the following technical solution: This invention proposes a self-cleaning drainage channel guiding device for photovoltaic modules, comprising,

[0007] The water tank is divided into a clear water zone and a wastewater zone by a vertically arranged filter assembly. A fixed cover is provided above the clear water zone, and a sliding cover is provided above the wastewater zone. The sliding cover is slidably mounted on the top surface of the water tank by a sliding assembly. A water pump is fixedly connected to the side wall of the clear water zone, and a sewage pipe is connected to the side wall of the wastewater zone.

[0008] A spray assembly, comprising a water spray pipe and multiple nozzles, wherein the nozzles are mounted on the water spray pipe, the water spray pipe is arranged horizontally above the top of the photovoltaic module, and its end is connected to the water pump outlet through a connecting component.

[0009] A flow guiding component is disposed between the photovoltaic module and the mounting frame, and its end is connected to a drainage channel.

[0010] In a preferred embodiment of the self-cleaning drainage channel guiding device for photovoltaic modules described in this invention: the filter assembly includes a coarse filter screen, an activated carbon layer, and a reverse osmosis membrane disposed in the water tank.

[0011] In a preferred embodiment of the photovoltaic module self-cleaning drainage channel guiding device of the present invention: the sliding component includes two guide rails and multiple pulleys, the two guide rails are respectively fixed on both sides of the water tank, and each is provided with a guide groove;

[0012] The pulleys are respectively fixed to the bottom ends of both sides of the sliding cover, and the pulleys are slidably disposed in the guide groove.

[0013] In a preferred embodiment of the photovoltaic module self-cleaning drainage channel guiding device of the present invention: the sliding component further includes an L-shaped support frame, a mounting box, a lead screw, a power source, and a moving block;

[0014] The L-shaped support frame is fixed to the side wall of the guide rail away from the photovoltaic module, and the mounting box is fixed to the top surface of the L-shaped support frame;

[0015] The lead screw is rotatably assembled inside the mounting box, and the power source is fixed to the outer wall of the mounting box, with its output shaft fixed to the end of the lead screw.

[0016] The movable block is threaded onto the outer wall of the lead screw and is fixedly connected to the sliding cover.

[0017] In a preferred embodiment of the self-cleaning drainage channel guide device for photovoltaic modules of the present invention: both ends of the water spray pipe are rotatably sleeved with support rings, the outer walls of the support rings are fixed with positioning rods, and the positioning rods are fixed on the photovoltaic module mounting frame.

[0018] In a preferred embodiment of the self-cleaning drainage channel guiding device for photovoltaic modules of the present invention: it further includes an adjustment component, which includes a protective shell, a drive unit, a telescopic rack and a transmission gear;

[0019] The protective shell is fixed to the side wall of the support ring, and the drive unit is fixed inside the protective shell; the telescopic rack is fixed to the movable shaft of the drive unit, and its tooth surface meshes with the transmission gear.

[0020] The water spray pipe passes through the center of the transmission gear and the protective shell, and its outer wall is fixed to the transmission gear and rotates with the protective shell.

[0021] In a preferred embodiment of the photovoltaic module self-cleaning drainage channel guiding device of the present invention: the connecting component includes a water inlet pipe and a rotary joint, one end of the water inlet pipe is connected to a water spray pipe through the rotary joint, and the other end is connected to a water pump.

[0022] In a preferred embodiment of the photovoltaic module self-cleaning drainage channel guiding device of the present invention: the guiding component includes a horizontal guiding pipe and a vertical guiding channel, and the horizontal guiding pipe and the vertical guiding channel are interwoven to form a grid-like drainage channel;

[0023] The transverse guide tube is fixed to the bottom of the transverse gap between adjacent photovoltaic modules;

[0024] The longitudinal guide grooves are installed between the two sides of the photovoltaic module and the longitudinal gap.

[0025] In a preferred embodiment of the self-cleaning drainage channel guiding device for photovoltaic modules of the present invention: the guiding component further includes a drainage mud guide clamp, which is snapped onto the horizontal bottom frame of the photovoltaic module to guide sewage at the frame into the horizontal guiding pipe.

[0026] In a preferred embodiment of the self-cleaning drainage channel guiding device for photovoltaic modules described in this invention: the bottom surface of the drainage channel is provided with a slope of 1% to 3%.

[0027] The beneficial effects of this invention are as follows: on rainy days, the water tank can be opened by sliding the cover to collect rainwater and filter and store the rainwater using the built-in multi-stage purification system. On sunny days, clean water is sprayed onto the surface of the photovoltaic module through the spray component, effectively removing dust and improving power generation efficiency. Wastewater flows into the drainage trough quickly and orderly through the optimized flow guiding component, reducing dust and water accumulation. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0029] Figure 1 This is a perspective view of the present invention;

[0030] Figure 2 This is a side view of the present invention;

[0031] Figure 3 for Figure 1 Enlarged view of the structure at point A in the middle;

[0032] Figure 4 for Figure 1 Enlarged view of the structure at point B;

[0033] Figure 5 for Figure 1 Enlarged view of the structure at point C;

[0034] Figure 6 for Figure 1 Enlarged view of the structure at point D;

[0035] Figure 7 for Figure 2 Enlarged view of the structure at point E in the middle;

[0036] Figure 8 This is a side view of the internal structure of the water tank of the present invention;

[0037] Figure 9 This is a schematic diagram of the structure of the adjustment component of the present invention;

[0038] Figure 10 This is a front view of the water tank and sliding assembly of the present invention.

[0039] In the picture:

[0040] 1. Water tank; 11. Fixed cover; 12. Sliding cover; 13. Sliding assembly; 131. Guide rail; 132. Pulley; 133. Support frame; 134. Mounting box; 135. Lead screw; 136. Power source; 137. Moving block;

[0041] 2. Sprinkler assembly; 21. Sprinkler pipe; 22. Sprinkler head; 23. Adjustment assembly; 231. Transmission gear; 232. Telescopic rack; 233. Drive unit; 234. Protective shell; 24. Support ring; 25. Positioning rod;

[0042] 3. Connecting components; 31. Rotary joint; 32. Water inlet pipe;

[0043] 4. Water pump;

[0044] 5. Filter assembly; 51. Coarse filter screen; 52. Activated carbon layer; 53. Reverse osmosis membrane;

[0045] 6. Drainage trough;

[0046] 7. Flow guiding assembly; 71. Flow guiding pipe; 72. Flow guiding channel; 73. Drainage and mud guiding clamp;

[0047] 8. Controller;

[0048] 9. Sewage pipe. Detailed Implementation

[0049] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0050] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0051] Example 1: Please refer to Figures 1-10 As shown, the photovoltaic module self-cleaning drainage channel guide device includes: a water tank 1, which is divided into a clean water area and a sewage area by a vertically arranged filter component 5. A fixed cover 11 and a sliding cover 12 are respectively arranged above the clean water area and the sewage area. The fixed cover 11 is fixedly arranged on the top surface of the water tank 1, and the sliding cover 12 is slidably arranged on the top surface of the water tank 1 through a sliding component 13. The sliding cover 12 is stacked on top of the fixed cover 11. A water pump 4 is fixedly arranged and connected to the side wall on one side of the clean water area, and a sewage pipe 9 is connected to the side wall on one side of the sewage area.

[0052] The spray assembly 2 includes a water spray pipe 21 and multiple nozzles 22 mounted on the water spray pipe 21. The water spray pipe 21 is horizontally positioned above the top of the photovoltaic module, and its end is connected to the outlet of the water pump 4 via a connecting assembly 3. An adjustment assembly 23 is fixedly mounted on the mounting frame of the photovoltaic module, and the adjustment assembly 23 is used to drive the water spray pipe 21 to rotate.

[0053] The flow guiding component 7 includes a horizontal flow guiding pipe 71 and a vertical flow guiding channel 72 fixedly installed between the photovoltaic module and the mounting frame. The two intersect to form a grid-like drainage channel, and the end is connected to the drainage trough 6. The bottom surface of the drainage trough 6 is provided with a slope of 1% to 3%.

[0054] Depend on Figure 8 It can be seen that the filter assembly 5 includes a coarse filter screen 51, an activated carbon layer 52 and a reverse osmosis membrane 53, and their upper and lower ends are respectively fixed on the bottom surface of the fixed cover 11 and the inner wall of the bottom of the water tank 1.

[0055] As can be seen from the above, the device operates in two time periods:

[0056] 1) Collect and filter rainwater on rainy days.

[0057] When staff learn from the weather forecast that rain is coming, they open the sliding assembly 13 and move the sliding cover 12 directly above the fixed cover 11, leaving the water tank 1 open. The continuous rainfall fills the water tank 1 with rainwater. Since the upper and lower ends of the filter assembly 5 are fixedly set between the fixed cover 11 and the water tank 1, the rainwater in the sewage area must pass through the filter assembly 5 before entering the clean water area. The coarse filter 51, activated carbon layer 52, and reverse osmosis membrane 53 in the filter assembly 5 form a multi-stage purification system. The coarse filter 51 first intercepts large particulate impurities in the sewage. The activated carbon layer 52 uses its rich pore structure to adsorb odors, pigments, and some small particles in the water. The reverse osmosis membrane 53 can filter out small particles, bacteria, viruses, etc. in the water, so that the sewage is finely filtered and transformed into relatively clean water, which flows into the clean water area of ​​the water tank 1. When the rain stops, the sliding assembly 13 is used to close the water tank 1 with the sliding cover 12.

[0058] 2) Sunny Day Clean Photovoltaic Modules

[0059] When staff observe that dust has accumulated on the surface of the photovoltaic modules, they turn on the water pump 4 to extract filtered water from the clean water area and deliver it to the spray pipe 21 via the connecting component 3. The water is then delivered to each nozzle 22 through the spray pipe 21, which sprays water onto the surface of the photovoltaic modules to clean them. During the cleaning process, the angle of the spray pipe 21 can be adjusted by adjusting the component 23 to ensure the cleaning effect. The wastewater after cleaning the photovoltaic modules flows along the surface of the photovoltaic modules to the grid-like drainage channel formed by the horizontal guide pipe 71 and the vertical guide trough 72. Under the guidance of these drainage channels, rainwater flows quickly and orderly to the drainage trough 6. The bottom surface of the drainage trough 6 has a slope of 1% to 3%, which allows the wastewater formed by rainwater carrying dust and other impurities to flow smoothly into the building's sewer pipes under the action of gravity, thus completing the self-cleaning of the photovoltaic modules.

[0060] After prolonged use, a large amount of silt and sand will accumulate in the sewage area of ​​water tank 1. Staff can open the valve of the drain pipe 9 to clean the silt and sand inside the sewage area, thereby improving the service life of water tank 1.

[0061] Specifically, regarding the above, please refer to... Figure 1 , Figure 4 , Figure 5 and Figure 7 As shown, the flow guide pipe 71 is fixedly installed at the bottom of the horizontal gap between adjacent photovoltaic modules. The inner wall of the flow guide pipe 71 is provided with a hydrophobic coating. The flow guide groove 72 is installed between the two sides of the photovoltaic module and the longitudinal gap. The bottom surface of the flow guide groove 72 is fixedly set on the mounting frame of the photovoltaic module, and the top surface is fixedly connected to the junction of the flow guide pipe 71. The cross-section of the flow guide groove 72 is M-shaped, and its inner wall is provided with a hydrophobic coating.

[0062] As can be seen from the above, the grid-like drainage channel formed by the guide pipe 71 and the guide channel 72, together with the hydrophobic coating, accelerates the flow of sewage generated by flushing. The M-shaped cross-section of the guide channel 72 increases the flow area of ​​sewage and helps the sewage to collect quickly, reducing water accumulation. The connection method and installation position of the guide pipe 71 and the guide channel 72 ensure that the entire drainage system is closely integrated with the photovoltaic module, fully covering the area where sewage may be generated, and improving drainage efficiency and self-cleaning effect.

[0063] Specifically, regarding the above, please refer to... Figure 4 and Figure 5 As shown, the flow guiding component 7 also includes a drainage mud guide clip 73 that is snapped onto the horizontal bottom frame of the photovoltaic module, used to guide the sewage on the frame of the photovoltaic module to be discharged into the flow guiding pipe 71.

[0064] As can be seen from the above, when rainwater or cleaning water washes the photovoltaic modules, sewage and impurities such as silt flow along the surface of the photovoltaic panels. When these sewage and silt flow past the frame of the photovoltaic panel, due to the obstruction of the frame and the change in water flow direction, they easily accumulate at the frame and are difficult to flow into the guide pipe 71 quickly. This results in the accumulation of silt and dust at the bottom of the frame, affecting the power generation efficiency of the photovoltaic modules. The principle of the drainage mud guide clamp 73 is to use the surface tension, capillary, and siphon principle of water to promptly guide the mixture of ash and water blocked by the aluminum frame at the bottom of the photovoltaic modules to the outside of the module frame during heavy rain and cleaning. When sewage and silt flow to the frame, the drainage mud guide clamp 73 can capture them in time and smoothly introduce the sewage into the guide pipe 71 through its internal channels, and then discharge it through the longitudinal guide groove 72 and the drainage groove 6, effectively improving the self-cleaning ability and protective performance of the photovoltaic modules.

[0065] Example 2:

[0066] refer to Figure 1 , Figure 2 and Figure 10 As shown, the sliding assembly 13 includes guide rails 131 fixedly disposed on both sides of the water tank 1. Both guide rails 131 are provided with guide grooves. Multiple pulleys 132 are fixedly disposed on both sides of the bottom of the sliding cover 12. The pulleys 132 are slidably disposed in the guide grooves.

[0067] An L-shaped support frame 133 is fixedly installed on the side wall of the guide rail 131 away from the photovoltaic module. An installation box 134 is fixedly installed on the top surface of the L-shaped support frame 133. The longitudinal section of the installation box 134 is inverted C-shaped. A lead screw 135 is rotatably installed inside the box. A power source 136 is fixedly installed on the outer wall. The output shaft of the power source 136 is fixedly connected to the end of the lead screw 135. A moving block 137 is threaded onto the outer wall of the lead screw 135. The moving block 137 fits into the inner wall of the installation box 134. The side wall of the moving block 137 is fixedly installed on the sliding cover 12.

[0068] As can be seen from the above, when staff learn from the weather forecast that rain is coming, they need to open the sliding cover 12 to put the water tank 1 in an open state to collect rainwater.

[0069] At this time, the operator turns on the power source 136. The power source 136 includes, but is not limited to, devices that can provide rotational power, such as motors. These are existing technologies and will not be described in detail. Its output shaft drives the lead screw 135 to rotate. The moving block 137 is restricted by the inside of the mounting box 134. According to the lead screw transmission principle, the moving block 137 will move linearly along the axis of the lead screw 135 within the mounting box 134. The side wall of the moving block 137 is fixedly mounted on the sliding cover 12. Therefore, when the moving block 137 moves linearly along the lead screw 135, it will drive the sliding cover 12 to move together. At the same time, multiple pulleys 132 are slidably mounted in the guide groove of the guide rail 131. On the one hand, this provides guidance for the movement of the sliding cover 12, ensuring that the sliding cover 12 can move along the preset path. On the other hand, the rolling friction of the pulleys 132 greatly reduces the resistance when the sliding cover 12 moves, making it easier for the power source 136 to drive the sliding cover 12 to move.

[0070] As the movable block 137 moves, the sliding cover 12 gradually moves to directly above the fixed cover 11, and the water tank 1 is in an open state, so that rainwater can be collected.

[0071] Example 3:

[0072] refer to Figure 1 and Figure 6 As shown, support rings 24 are rotatably sleeved on the outer walls of both ends of the water spray pipe 21. Positioning rods 25 are fixedly installed on the outer walls of the support rings 24, and the positioning rods 25 are fixedly installed on the mounting bracket of the photovoltaic module.

[0073] As can be seen from the above, the setting of the support ring 24 and the positioning rod 25 provides a stable support structure for the water spray pipe 21, so that the water spray pipe 21 remains stable during rotation, avoiding the impact of shaking or displacement on the spraying effect of the nozzle 22. Moreover, this installation method can also effectively distribute the weight of the water spray pipe 21, reduce the burden on the connecting component 3, and extend the service life of the device.

[0074] refer to Figure 3 and Figure 9As shown, the adjustment component 23 includes a protective shell 234 fixedly mounted on the side wall of the support ring 24. A drive unit 233 is fixedly mounted inside the protective shell 234. A telescopic rack 232 is fixedly mounted on the movable shaft of the drive unit 233. A transmission gear 231 is meshed on the tooth surface of the telescopic rack 232. A water spray pipe 21 passes through the center of the transmission gear 231 and the protective shell 234. Its outer wall is fixedly connected to the transmission gear 231 and rotatably mounted on the protective shell 234. The drive unit 233 includes, but is not limited to, various power devices such as electric push rods and cylinders, which are existing technologies and will not be described in detail here.

[0075] The connecting component 3 includes a water inlet pipe 32, one end of which is connected to a water spray pipe 21 via a rotary joint 31, and the end of the water inlet pipe 32 away from the water spray pipe 21 is connected to a water pump 4.

[0076] As can be seen from the above, the meshing of the transmission gear 231 and the telescopic rack 232 converts the linear motion of the drive unit 233 into the circumferential rotation of the water spray pipe 21, thereby driving the nozzle 22 to adjust its angle. The telescopic rack 232, which is set perpendicular to the inclined surface of the photovoltaic module, can more efficiently control the angle of the nozzle 22 according to the actual installation angle of the photovoltaic module, so that the water flow can impact the surface of the photovoltaic module at the most suitable angle, fully covering different areas and enhancing the cleaning effect. The drive unit 233 is fixed on the photovoltaic module mounting frame, which not only ensures the stability of the structure, but also facilitates connection with the controller 8, making it easy to receive control signals and realize automated angle adjustment. This greatly improves the intelligence of the device and the flexibility and accuracy of the cleaning work, meeting the cleaning needs of photovoltaic modules under different levels and distribution of dirt.

[0077] By connecting the water inlet pipe 32 and the water spray pipe 21 through the rotary joint 31, it is possible to ensure a stable water flow and allow the water spray pipe 21 to rotate flexibly under the action of the adjustment component 23, thereby adjusting the spray angle of the nozzle 22 to meet the rinsing needs of photovoltaic modules at different positions and angles, ensuring the comprehensiveness and flexibility of cleaning.

[0078] Example 4:

[0079] refer to Figure 1 and Figure 2 As shown, the controller 8 is fixedly mounted on the photovoltaic module mounting bracket. It is electrically connected to an external control terminal through a built-in communication module and electrically connected to the drive unit 233, the water pump 4, and the power source 136 through a control circuit.

[0080] As shown above, users input corresponding control commands through external control terminals (such as mobile apps or computer software), such as turning on water pump 4 to clean photovoltaic modules, or controlling power source 136 to open sliding cover 12 to collect rainwater. These commands are sent out in the form of specific digital signals via wireless networks (such as Wi-Fi, Bluetooth, 4G, etc.). The communication module listens to external signals in real time. When it detects a control command signal from an external control terminal, it captures and parses it. The communication module decodes the signal according to a pre-set communication protocol to identify the specific content of the command, such as turning a device on or off, or adjusting the device's operating parameters. The communication module transmits the parsed control command to the controller 8 in a suitable format and level standard. After receiving the control command transmitted by the communication module, the controller 8 processes it accordingly and outputs drive signals to the drive unit 233, water pump 4, and power source 136 through the control circuit to independently control their start / stop or operating status.

[0081] For photovoltaic modules installed in high-risk environments, an additional controller 8 and communication module can be installed to enable remote control and provide staff with a safe and convenient start-up and shutdown operation method. The controller 8 and communication module are existing technologies, and their installation methods, power supply design and communication protocol configuration are well known to those skilled in the art, requiring no creative effort.

[0082] In summary, compared with the prior art, the beneficial effects of the present invention are:

[0083] During rainy days, the sliding cover 12 and filter assembly 5 automatically collect rainwater and convert it into clean water through three-stage filtration (coarse filter 51, activated carbon layer 52, and reverse osmosis membrane 53). This solves the problem of incomplete cleaning and inability to store water from natural rainfall, providing a stable water source for cleaning on sunny days. During cleaning on sunny days, the water pump draws filtered water from the clean water area for spraying, while wastewater is collected by the gridded guide assembly 7 and discharged into the drainage trough 6. This avoids the waste of water resources from manual water gun cleaning and achieves a water saving rate of over 80% per cleaning cycle.

[0084] Based on the actual tilt angle of the photovoltaic module, the spray angle of the nozzle 22 is dynamically adjusted by the adjustment component 23, so that the water flow covers the entire surface of the photovoltaic module at the optimal impact angle, thereby improving cleaning efficiency. At the same time, the rotary joint 31 cooperates with the rigidly installed drive unit 233 to achieve flexible multi-angle adjustment of the nozzle 22 while ensuring stable water flow delivery.

[0085] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A photovoltaic module self-cleaning gutter flow guide device, characterized by: Including, The water tank (1) is divided into a clean water area and a sewage area by a vertically arranged filter assembly (5), a fixed cover (11) is arranged above the clean water area, a sliding cover (12) is arranged above the sewage area, the sliding cover (12) is slidably assembled on the top surface of the water tank (1) by a sliding assembly (13), a water pump (4) is fixedly connected to the side wall of the clean water area, and a sewage pipe (9) is connected to the side wall of the sewage area; The spraying assembly (2) comprises a water spraying pipe (21) and a plurality of spray heads (22), the spray heads (22) are mounted on the water spraying pipe (21), the water spraying pipe (21) is transversely arranged above the top end of the photovoltaic assembly, and the end of the water spraying pipe (21) is connected with the water outlet of the water pump (4) through a connecting assembly (3); The water flow guide assembly (7) is arranged between the photovoltaic assembly and the mounting rack, and the end of the water flow guide assembly (7) is connected with the drain groove (6).

2. The photovoltaic module self-cleaning drainage channel flow guide device according to claim 1, characterized in that: The filter assembly (5) comprises a coarse filter screen (51), an activated carbon layer (52) and a reverse osmosis membrane (53) arranged in the water tank (1).

3. The photovoltaic module self-cleaning drainage channel flow guide device according to claim 2, characterized in that: The sliding assembly (13) comprises two guide rails (131) and a plurality of pulleys (132), the two guide rails (131) are fixed on the two sides of the water tank (1) and are each provided with a guide groove; The plurality of pulleys (132) are fixed on the bottom ends of the two sides of the sliding cover (12), and the pulleys (132) are slidably arranged in the guide grooves.

4. The photovoltaic module self-cleaning drainage channel flow guide device according to claim 3, characterized in that: The sliding assembly (13) further comprises an L-shaped support frame (133), a mounting box (134), a lead screw (135), a power source (136) and a moving block (137); The L-shaped support frame (133) is fixed to the side wall of the guide rail (131) away from the photovoltaic assembly, and the mounting box (134) is fixed to the top surface of the L-shaped support frame (133); The lead screw (135) is rotatably arranged in the mounting box (134), the power source (136) is fixed to the outer wall of the mounting box (134), and the output shaft of the power source (136) is fixed to the end of the lead screw (135); The moving block (137) is threadedly connected to the outer wall of the lead screw (135) and is fixedly connected with the sliding cover (12).

5. The photovoltaic module self-cleaning drainage channel flow guide device according to claim 4, characterized in that: Support rings (24) are rotatably connected to the outer walls of the two ends of the water spraying pipe (21), positioning rods (25) are fixed to the outer walls of the support rings (24), and the positioning rods (25) are fixed to the mounting rack of the photovoltaic assembly.

6. The photovoltaic module self-cleaning drainage channel flow guide device according to claim 5, characterized in that: Further comprising an adjusting assembly (23), the adjusting assembly (23) comprises a protective shell (234), a driving unit (233), a telescopic rack (232) and a transmission gear (231); The protective shell (234) is fixed to the side wall of the support ring (24), the driving unit (233) is fixed in the protective shell (234), the telescopic rack (232) is fixed to the movable shaft of the driving unit (233), and the tooth surface of the telescopic rack (232) is engaged with the transmission gear (231); The water spraying pipe (21) penetrates the center of the transmission gear (231) and the protective shell (234), the outer wall of the water spraying pipe (21) is fixed with the transmission gear (231) and is rotatably connected with the protective shell (234).

7. The photovoltaic module self-cleaning drainage channel flow guide device according to claim 6, characterized in that: The connecting assembly (3) comprises a water inlet pipe (32) and a rotary joint (31), one end of the water inlet pipe (32) is communicated with the water spraying pipe (21) through the rotary joint (31), and the other end is communicated with the water pump (4).

8. The photovoltaic module self-cleaning drainage channel flow guide apparatus according to claim 7, wherein: The flow guide assembly (7) comprises transverse flow guide pipes (71) and longitudinal flow guide grooves (72), the transverse flow guide pipes (71) and the longitudinal flow guide grooves (72) are staggered to form a grid-shaped drainage channel; The transverse flow guide pipes (71) are fixed to the bottom of the transverse gap of adjacent photovoltaic assemblies; The longitudinal flow guide grooves (72) are installed between the two side edges of the photovoltaic assembly and the longitudinal gap.

9. The photovoltaic module self-cleaning drainage channel flow guide apparatus according to claim 8, wherein: The flow guide assembly (7) further comprises a drainage and mud guide clamp (73), the drainage and mud guide clamp (73) is clamped to the horizontal bottom frame of the photovoltaic assembly, and is used for guiding the sewage at the frame to flow into the transverse flow guide pipe (71).

10. The photovoltaic module self-cleaning drainage channel flow guide apparatus of claim 9, wherein: The bottom surface of the drainage groove (6) is provided with a slope of 1% to 3%.

Images