An automated cleaning apparatus for photovoltaic panels

Abstract

The application discloses an automatic cleaning device for a photovoltaic panel surface, and relates to the technical field of photovoltaic panel cleaning.The automatic cleaning device comprises a mounting frame, a photovoltaic panel is fixedly connected to the inner wall of the mounting frame, a cleaning mechanism, the cleaning mechanism comprises two guide rails which are fixedly connected to the side walls of the mounting frame in a symmetrical mode, sliding blocks are slidably connected to the inner walls of the two guide rails, mounting seats are fixedly connected to the upper ends of the sliding blocks, cleaning seats are fixedly connected to the side walls of the mounting seats, a plurality of hollow rotating shafts are rotatably connected to the lower ends of the cleaning seats, cleaning sponge blocks are fixedly connected to the lower ends of the hollow rotating shafts, and liquid supply blocks are fixedly connected to the side walls of the mounting seats.The photovoltaic panel surface can be automatically cleaned, the temperature of cleaning liquid can be automatically adjusted according to the temperature of the photovoltaic panel surface, the temperature difference between the cleaning liquid and the photovoltaic panel surface is avoided to be large, the photovoltaic panel is prevented from being damaged, and the photovoltaic panel can be cleaned at any time, so that the device is more convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic panel cleaning, and in particular to an automatic cleaning device for photovoltaic panel surfaces. Background Art

[0002] Photovoltaic panel is the abbreviation of solar photovoltaic power generation system. It is a new type of power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy. It has two modes of operation: independent operation and grid-connected operation. At the same time, solar photovoltaic power generation systems are divided into two categories, one is centralized, such as large-scale northwest ground photovoltaic power generation systems, and the other is distributed, such as photovoltaic power generation systems on the roofs of industrial and commercial factory buildings.

[0003] When existing photovoltaic panels are in use, dust will accumulate on their surface, which will affect the power generation efficiency of the photovoltaic panels. Therefore, it is usually necessary to clean the surface of the photovoltaic panels regularly. Currently, photovoltaic panels are usually cleaned manually, and manual cleaning of the photovoltaic panel surface using a cleaning cloth is troublesome and has low cleaning efficiency. In addition, due to the characteristics of photovoltaic panels, the surface temperature is high when the sun is strong at noon, and it is difficult to clean. Therefore, it is necessary to choose the morning or evening time period for cleaning, which hinders the cleaning of the photovoltaic panels.

[0004] Based on this, we propose an automated cleaning device for photovoltaic panels. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automatic cleaning device for photovoltaic panels.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An automated cleaning device for a photovoltaic panel surface comprises a mounting frame, the inner wall of which is fixedly connected to a photovoltaic panel, and further comprising:

[0008] The cleaning mechanism comprises two guide rails symmetrically fixedly connected to the side walls of the mounting frame, the inner walls of the two guide rails are slidably connected to sliders, the upper ends of the sliders are commonly fixedly connected to the mounting seat, the side walls of the mounting seat are fixedly connected to the cleaning seat, the lower end of the cleaning seat is rotatably connected to a plurality of hollow rotating shafts, the lower end of each of the hollow rotating shafts is fixedly connected to a cleaning sponge block, the side walls of the mounting seat are fixedly connected to a liquid supply block, a U-shaped cavity is provided in the liquid supply block, a plurality of liquid spray holes are provided on the inner wall of the U-shaped cavity, a dust exhaust cavity is provided in the cleaning seat, a plurality of dust suction ports are provided on the inner wall of the dust exhaust cavity, the side wall of the hollow rotating shaft located in the dust suction port is fixedly connected to a plurality of fan blades, and the inner wall of the dust exhaust cavity is fixedly connected to a dust exhaust pipe;

[0009] The mounting frame is provided with a driving mechanism for driving the mounting seat to move;

[0010] The liquid supply block is provided with a liquid supply mechanism for supplying liquid into the U-shaped cavity.

[0011] Preferably, the driving mechanism includes a mounting plate fixedly connected to a side wall of the mounting frame, the side wall of the mounting plate is fixedly connected to a first electric push rod, and a movable end of the first electric push rod is fixedly connected to a side wall of the liquid supply block.

[0012] Preferably, the driving mechanism also includes a mounting groove opened in the cleaning seat, the upper ends of the multiple hollow rotating shafts are extended into the mounting groove, and the side walls of the hollow rotating shafts located in the mounting groove are fixedly connected with gears, and the adjacent gears are meshedly connected, and one of the side walls of the slider is fixedly connected with a rack, and the rack is meshedly connected with one of the gears.

[0013] Preferably, the liquid supply mechanism includes a circulation box fixedly connected to the side wall of the liquid supply block, the inner wall of the circulation box is sealed and slidably connected with a sealing plate, a plurality of first springs are fixedly connected between the bottom of the circulation box and the sealing plate, the circulation box is connected to the U-shaped cavity through a one-way liquid supply pipe, and the U-shaped cavity is connected to the circulation box through a one-way return liquid pipe.

[0014] Preferably, the liquid supply mechanism further comprises a first water pump and a second water pump fixedly connected to the side wall of the circulation box, and the first water pump and the second water pump are both connected to the circulation box through a pump-liquid pipe.

[0015] Preferably, a temperature adjustment mechanism is installed in the liquid spray hole, and the temperature adjustment mechanism includes a slide groove opened in the liquid spray hole, the inner wall of the slide groove is sealed and slidably connected to a sealing block, a plurality of installation cavities are opened in the liquid supply block, and the inner wall of the installation cavity is fixedly connected to a second electric push rod, and the movable end of the second electric push rod passes through the inner wall of the slide groove and is fixedly connected to the sealing block.

[0016] Preferably, the temperature adjustment mechanism also includes a plurality of electric heating plates fixedly connected to the inner wall of the U-shaped cavity, a temperature difference measuring instrument is installed at the lower end of the liquid supply block, and the temperature difference measuring instrument, the electric heating plates, the second electric push rod and the power supply are connected through a PLC control circuit.

[0017] Preferably, a lubrication mechanism is installed on the sealing block, and the lubrication mechanism includes an oil pump chamber opened in the sealing block, the inner wall of the oil pump chamber is sealingly and slidingly connected to a pressure block, a second spring is fixedly connected between the bottom of the oil pump chamber and the pressure block, and an oil storage chamber is opened in the liquid supply block, and the oil pump chamber is connected to the oil storage chamber through a one-way oil inlet pipe.

[0018] Preferably, the lubrication mechanism also includes a plurality of rotary joints fixedly connected to the inner wall of the mounting groove through a bracket, the upper end of the hollow rotating shaft is fixedly connected to the rotary joint, the inner wall of the pump oil chamber is fixedly connected to a one-way oil supply pipe, and the other end of the one-way oil supply pipe is fixedly connected to the rotary joint.

[0019] Preferably, an oil filling pipe is fixedly connected to the inner wall of the oil storage cavity, and a solenoid valve is installed on the inner wall of the oil filling pipe.

[0020] The present invention has the following beneficial effects:

[0021] 1. By setting up a cleaning mechanism and a driving mechanism, and starting the first electric push rod, the cleaning sponge block can be translated and rotated to wipe the surface of the photovoltaic panel, and the hollow shaft can also drive the fan blades to rotate to absorb dust. Compared with manual wiping, it has a good cleaning effect and high cleaning efficiency;

[0022] 2. By setting up a liquid supply mechanism, the first water pump is started during cleaning. The first water pump will pump the cleaning liquid into the circulation box through the pump liquid pipe, and then the cleaning liquid will enter the U-shaped cavity through the one-way liquid supply pipe. The cleaning liquid will flow in the U-shaped cavity. At this time, the temperature difference measuring instrument will measure the temperature of the photovoltaic panel and the cleaning liquid in the U-shaped cavity. If the temperature difference between the two does not exceed degrees Celsius, the temperature difference measuring instrument will send a signal to energize the second electric push rod through the PLC control circuit to shrink it, thereby driving the sealing block to enter the slide groove, so that the spray hole is opened, and then the cleaning liquid will be sprayed out through multiple spray holes and sprayed onto the surface of the photovoltaic panel to rinse the photovoltaic panel. In addition, the photovoltaic panel can be cleaned in conjunction with the moving cleaning sponge block to achieve a better cleaning effect.

[0023] 3. After using the cleaning liquid to clean back and forth several times, stop the first water pump and start the second water pump to pump water into the circulation box and the U-shaped cavity. Then the water is sprayed out through multiple spray holes to rinse the surface of the photovoltaic panel, which can effectively clean the residual cleaning liquid on the surface of the photovoltaic panel;

[0024] 4. By setting a temperature adjustment mechanism, when the temperature difference measuring instrument measures that the temperature difference between the cleaning liquid and the surface of the photovoltaic panel is greater than five degrees Celsius, the second electric push rod will not be energized, and the electric heating plate will be energized to heat the cleaning liquid. Since the second electric push rod is not energized, the sealing block will block the spray hole, so that the cleaning liquid cannot be sprayed out through the spray hole, thereby allowing the cleaning liquid to circulate in the U-shaped cavity, heating it and raising its temperature. When the temperature difference between the cleaning liquid and the surface temperature of the photovoltaic panel is less than five degrees Celsius, the temperature difference measuring instrument will energize the second electric push rod through the PLC control circuit to spray the liquid. This cleaning method can prevent the cold cleaning liquid from being sprayed onto the surface of the photovoltaic panel with a higher temperature, causing the photovoltaic panel to be damaged due to the large temperature difference.

[0025] 5. By setting up a lubrication mechanism, during the heating of the cleaning liquid, more and more cleaning liquid is pumped into the circulation box, and the sealing plate will gradually move upward, causing the first spring to be stretched. On the contrary, under the action of the first spring, the sealing plate will also give pressure to the cleaning liquid, so that the pressure of the cleaning liquid becomes greater and greater, and then the cleaning liquid in the U-shaped cavity will give pressure to the pressing block, causing the pressing block to slide downward in a sealed manner, and squeeze the lubricating oil in the pump oil cavity into the hollow shaft through the one-way oil supply pipe, and then the lubricating oil will be absorbed by the cleaning sponge block. Because during the heating of the cleaning liquid, there is dry friction between the cleaning sponge block and the photovoltaic panel, and the friction is large, which may scratch the photovoltaic panel. Therefore, a small amount of lubricating oil will be pumped in at this time to reduce the friction between the cleaning sponge block and the photovoltaic panel, which can provide protection for the photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of an automatic cleaning device for photovoltaic panels proposed by the present invention;

[0027] Figure 2 for Figure 1 A schematic side view of the mid-structure;

[0028] Figure 3 for Figure 1 A bottom-up schematic diagram of the middle structure;

[0029] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the middle cleaning seat;

[0030] Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure of the middle liquid supply block;

[0031] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure of the middle liquid supply block;

[0032] Figure 7 for Figure 4 A schematic diagram of the structure enlargement at point A;

[0033] Figure 8 for Figure 5 A magnified schematic diagram of the structure at point B in FIG;

[0034] Figure 9 for Figure 5 Schematic diagram of the enlarged structure at point C in FIG.

[0035] Figure: 1, mounting frame; 2, photovoltaic panel; 3, guide rail; 4, slider; 5, mounting seat; 6, cleaning seat; 7, hollow shaft; 8, cleaning sponge block; 9, liquid supply block; 10, U-shaped cavity; 11, liquid spray hole; 12, mounting plate; 13, first electric push rod; 14, mounting groove; 15, gear; 16, rack; 17, circulation box; 18, sealing plate; 19, first spring; 20, one-way liquid supply pipe; 21, one-way liquid return pipe; 2 2. First water pump; 23. Second water pump; 24. Pump liquid pipe; 25. One-way oil inlet pipe; 26. Slide; 27. Sealing block; 28. Mounting cavity; 29. ​​Second electric push rod; 30. Electric heating plate; 31. Temperature difference measuring instrument; 32. Dust exhaust cavity; 33. Dust suction port; 34. Fan blade; 35. Pump oil cavity; 36. Pressure block; 37. Second spring; 38. Oil storage cavity; 39. Rotary joint; 40. One-way oil supply pipe; 41. Oil filling pipe. DETAILED DESCRIPTION

[0036] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Reference Figures 1-9 , an automated cleaning device for a photovoltaic panel surface, comprising a mounting frame 1, a photovoltaic panel 2 being fixedly connected to the inner wall of the mounting frame 1, and further comprising:

[0038] The cleaning mechanism includes two guide rails 3 symmetrically fixedly connected to the side walls of the mounting frame 1, the inner walls of the two guide rails 3 are slidably connected with sliders 4, the upper ends of the sliders 4 are commonly fixedly connected to the mounting seat 5, and the side walls of the mounting seat 5 are fixedly connected with a cleaning seat 6, such as Figure 7 As shown, the lower end of the cleaning seat 6 is rotatably connected to a plurality of hollow shafts 7, the lower end of each hollow shaft 7 is fixedly connected to a cleaning sponge block 8, and the side wall of the mounting seat 5 is fixedly connected to a liquid supply block 9, as shown in FIG. Figure 6 As shown, a U-shaped cavity 10 is provided in the liquid supply block 9, and a plurality of liquid spray holes 11 are provided on the inner wall of the U-shaped cavity 10. Figure 7 As shown, a dust exhaust chamber 32 is opened in the cleaning seat 6, and a plurality of dust suction ports 33 are opened on the inner wall of the dust exhaust chamber 32. A plurality of fan blades 34 are fixedly connected to the side wall of the hollow rotating shaft 7 located in the dust suction port 33, and a dust exhaust pipe is fixedly connected to the inner wall of the dust exhaust chamber 32;

[0039] A driving mechanism for driving the mounting seat 5 to move is installed on the mounting frame 1;

[0040] A liquid supply mechanism for supplying liquid into the U-shaped cavity 10 is installed on the liquid supply block 9 .

[0041] The driving mechanism includes a mounting plate 12 fixedly connected to the side wall of the mounting frame 1 , a first electric push rod 13 fixedly connected to the side wall of the mounting plate 12 , and a movable end of the first electric push rod 13 fixedly connected to the side wall of the liquid supply block 9 .

[0042] like Figure 7 As shown, the driving mechanism also includes a mounting groove 14 provided in the cleaning seat 6, the upper ends of multiple hollow rotating shafts 7 are extended into the mounting groove 14, and the side walls of the hollow rotating shafts 7 located in the mounting groove 14 are fixedly connected with gears 15, and adjacent gears 15 are meshedly connected. One of the side walls of the sliders 4 is fixedly connected with a rack 16, and the rack 16 is meshedly connected with one of the gears 15.

[0043] Furthermore, when the photovoltaic panel 2 needs to be cleaned, the first electric push rod 13 is driven to extend and retract repeatedly, driving the liquid supply block 9 to move. The liquid supply block 9 will push the mounting base 5 to move repeatedly, thereby driving the cleaning base 6 to move repeatedly, driving multiple cleaning sponge blocks 8 to move repeatedly, generating friction with the photovoltaic panel 2, and wiping dust. In the process of movement, the cleaning base 6 will drive the gear 15 to move. Since one of the gears 15 is engaged with the rack 16, the rack 16 will cause the gear 15 engaged with it to rotate, thereby driving other gears 15 to rotate, driving the hollow rotating shaft 7 to rotate, and then driving multiple cleaning sponge blocks 8 to rotate, which can provide tangential friction and enhance the cleaning effect of stubborn dust. In addition, when the hollow rotating shaft 7 rotates, it will drive multiple fan blades 34 to rotate, generating suction, so that part of the dust on the surface of the photovoltaic panel 2 enters the dust exhaust chamber 32 through the dust suction port 33, and then the dust in the dust exhaust chamber 32 will be discharged through the dust exhaust pipe, further improving the cleaning effect.

[0044] It should be noted that the cleaning sponge block 8 needs to be replaced regularly after use to ensure the cleaning effect.

[0045] like Figure 5 and Figure 8 As shown, the liquid supply mechanism includes a circulation box 17 fixedly connected to the side wall of the liquid supply block 9, and the inner wall of the circulation box 17 is sealed and slidably connected with a sealing plate 18. A plurality of first springs 19 are fixedly connected between the bottom of the circulation box 17 and the sealing plate 18. The circulation box 17 is connected to the U-shaped cavity 10 through a one-way liquid supply pipe 20. The one-way liquid supply pipe 20 only allows the cleaning liquid or water in the circulation box 17 to enter the U-shaped cavity 10. The U-shaped cavity 10 is connected to the circulation box 17 through a one-way liquid return pipe 21. The one-way liquid return pipe 21 only allows the cleaning liquid or water in the U-shaped cavity 10 to enter the circulation box 17.

[0046] The liquid supply mechanism also includes a first water pump 22 and a second water pump 23 fixedly connected to the side wall of the circulation box 17. The first water pump 22 and the second water pump 23 are both connected to the circulation box 17 through a pump liquid pipe 24. The first water pump 22 is connected to an external container for storing cleaning liquid through a pipeline, and the second water pump 23 is connected to an external container for storing water through a pipeline.

[0047] like Figure 5 and Figure 9 As shown, a temperature adjustment mechanism is installed in the spray hole 11, and the temperature adjustment mechanism includes a slide groove 26 opened in the spray hole 11, and the inner wall of the slide groove 26 is sealed and slidably connected to a sealing block 27. A plurality of mounting cavities 28 are opened in the liquid supply block 9, and the inner wall of the mounting cavity 28 is fixedly connected to a second electric push rod 29. The movable end of the second electric push rod 29 passes through the inner wall of the slide groove 26 and is fixedly connected to the sealing block 27.

[0048] The temperature adjustment mechanism also includes a plurality of electric heating plates 30 fixedly connected to the inner wall of the U-shaped cavity 10. A temperature difference measuring instrument 31 is installed at the lower end of the liquid supply block 9. The temperature difference measuring instrument 31, the electric heating plate 30, the second electric push rod 29 and the power supply are connected through a PLC control circuit.

[0049] Furthermore, when cleaning, the first water pump 22 is started, and the first water pump 22 will pump the cleaning liquid into the circulation box 17 through the pump liquid pipe 24, and then the cleaning liquid will enter the U-shaped cavity 10 through the one-way liquid supply pipe 20. The cleaning liquid will flow in the U-shaped cavity 10. At this time, the temperature difference measuring instrument 31 will measure the temperature of the cleaning liquid in the photovoltaic panel 2 and the U-shaped cavity 10. If the temperature difference between the two does not exceed five degrees Celsius, the temperature difference measuring instrument 31 will send a signal to energize the second electric push rod 29 through the PLC control circuit to shrink it, thereby driving the sealing block 27 to enter the slide groove 26, so that the spray hole 11 opens, and then the cleaning liquid will be sprayed out through multiple spray holes 11, sprayed onto the surface of the photovoltaic panel 2, and the photovoltaic panel 2 is rinsed, and the photovoltaic panel 2 is cleaned in conjunction with the moving cleaning sponge block 8, so that the cleaning effect is better.

[0050] Furthermore, when the temperature difference measuring instrument 31 measures that the temperature difference between the cleaning liquid and the surface of the photovoltaic panel 2 is greater than five degrees Celsius, the second electric push rod 29 will not be energized, and the electric heating plate 30 will be energized to heat the cleaning liquid. Since the second electric push rod 29 is not energized, the sealing block 27 will block the spray hole 11, so that the cleaning liquid cannot be sprayed out through the spray hole 11, and the cleaning liquid can circulate in the U-shaped cavity 10 to heat it and increase its temperature. When the cleaning liquid is heated to a temperature difference of less than five degrees Celsius between the surface temperature of the photovoltaic panel 2 and the temperature difference, the temperature difference measuring instrument 31 will energize the second electric push rod 29 through the PLC control circuit to spray the liquid. This cleaning method can prevent the cold cleaning liquid from being sprayed onto the surface of the photovoltaic panel 2 with a higher temperature, causing the photovoltaic panel 2 to be damaged due to the large temperature difference. The photovoltaic panel 2 can be cleaned at any time, which is more convenient to use.

[0051] A lubrication mechanism is installed on the sealing block 27, which includes an oil pump chamber 35 opened in the sealing block 27. The inner wall of the oil pump chamber 35 is sealed and slidably connected to a pressure block 36. A second spring 37 is fixedly connected between the bottom of the oil pump chamber 35 and the pressure block 36. An oil storage chamber 38 is opened in the liquid supply block 9. The oil pump chamber 35 is connected to the oil storage chamber 38 through a one-way oil inlet pipe 25. The one-way oil inlet pipe 25 only allows the lubricating oil in the oil storage chamber 38 to enter the oil pump chamber 35.

[0052] like Figure 5 and Figure 7 As shown, the lubrication mechanism also includes a plurality of rotary joints 39 fixedly connected to the inner wall of the mounting groove 14 through a bracket, the upper end of the hollow rotating shaft 7 is fixedly connected to the rotary joint 39, and a one-way oil supply pipe 40 is fixedly connected to the inner wall of the pump oil chamber 35, and the other end of the one-way oil supply pipe 40 is fixedly connected to the rotary joint 39. The one-way oil supply pipe 40 only allows the lubricating oil in the pump oil chamber 35 to enter the hollow rotating shaft 7.

[0053] Furthermore, during the heating of the cleaning liquid, more and more cleaning liquid is pumped into the circulation box 17, and the sealing plate 18 will gradually move upward, causing the first spring 19 to be stretched. On the contrary, under the action of the first spring 19, the sealing plate 18 will also give pressure to the cleaning liquid, so that the pressure of the cleaning liquid becomes greater and greater, and then the cleaning liquid in the U-shaped cavity 10 will give pressure to the pressure block 36, causing the pressure block 36 to slide downward in a sealed manner, and the lubricating oil in the pump oil cavity 35 is squeezed into the hollow rotating shaft 7 through the one-way oil supply pipe 40, and then the lubricating oil will be absorbed by the cleaning sponge block 8. Because during the heating of the cleaning liquid, there is dry friction between the cleaning sponge block 8 and the photovoltaic panel 2, and the friction is large, which may scratch the photovoltaic panel 2. Therefore, a small amount of lubricating oil will be pumped in at this time to reduce the friction between the cleaning sponge block 8 and the photovoltaic panel 2, which can provide protection for the photovoltaic panel 2.

[0054] An oil filling pipe 41 is fixedly connected to the inner wall of the oil storage chamber 38 , and a solenoid valve is installed on the inner wall of the oil filling pipe 41 . Lubricating oil can be added to the oil storage chamber 38 through the oil filling pipe 41 .

[0055] When the cleaning process is complete, the cleaning seat 6 will move back and forth, and the cleaning seat 6 will move back and forth, thereby removing the dust from the cleaning seat 6 and the cleaning sponge 8. When the cleaning process is complete, the cleaning seat 6 will move back and forth, thereby removing the dust from the cleaning seat 6 and the cleaning sponge 8. When the cleaning process is complete, the cleaning seat 6 will move back and forth, thereby removing the dust from the cleaning seat 6 and the cleaning sponge 8. When the cleaning process is complete, the cleaning seat 6 will move back and forth, thereby removing the dust from the cleaning seat 6 and the cleaning sponge 8.

[0056] And when cleaning, start the first water pump 22, the first water pump 22 will pump the cleaning liquid into the circulation box 17 through the pump liquid pipe 24, and then the cleaning liquid will enter the U-shaped cavity 10 through the one-way liquid supply pipe 20, and the cleaning liquid will flow in the U-shaped cavity 10. At this time, the temperature difference measuring instrument 31 will measure the temperature of the cleaning liquid in the photovoltaic panel 2 and the U-shaped cavity 10. If the temperature difference between the two does not exceed five degrees Celsius, the temperature difference measuring instrument 31 will send a signal, and energize the second electric push rod 29 through the PLC control circuit to make it contract, thereby driving the sealing block 27 to enter the slide groove 26, so that the spray hole 11 opens, and then the cleaning liquid will be sprayed out through multiple spray holes 11, sprayed onto the surface of the photovoltaic panel 2, and the photovoltaic panel 2 is rinsed, and the photovoltaic panel 2 is cleaned in conjunction with the moving cleaning sponge block 8, and the cleaning effect is better.

[0057] When the temperature difference measuring instrument 31 measures that the temperature difference between the cleaning liquid and the surface of the photovoltaic panel 2 is greater than five degrees Celsius, the second electric push rod 29 will not be energized, and the electric heating plate 30 will be energized to heat the cleaning liquid. Since the second electric push rod 29 is not energized, the sealing block 27 will block the liquid spray hole 11, so that the cleaning liquid cannot be sprayed out through the liquid spray hole 11, and the cleaning liquid can circulate in the U-shaped cavity 10, heating it and raising its temperature. During this period, as more and more cleaning liquid is pumped into the circulation box 17, the sealing plate 18 will gradually move upward, causing the first spring 19 to be stretched. On the contrary, the first spring 1 9, the sealing plate 18 will also give pressure to the cleaning liquid, making the pressure of the cleaning liquid larger and larger, and then the cleaning liquid in the U-shaped cavity 10 will give pressure to the pressing block 36, causing the pressing block 36 to slide downward in a sealed manner, and the lubricating oil in the pump oil cavity 35 will be squeezed into the hollow rotating shaft 7 through the one-way oil supply pipe 40, and then the lubricating oil will be absorbed by the cleaning sponge block 8. Because during the heating of the cleaning liquid, there is dry friction between the cleaning sponge block 8 and the photovoltaic panel 2, and the friction is large, which may scratch the photovoltaic panel 2. Therefore, a small amount of lubricating oil will be pumped in at this time to reduce the friction between the cleaning sponge block 8 and the photovoltaic panel 2, which can provide protection for the photovoltaic panel 2.

[0058] When the temperature difference between the cleaning liquid and the surface temperature of the photovoltaic panel 2 is less than five degrees Celsius, the temperature difference measuring instrument 31 will energize the second electric push rod 29 through the PLC control circuit to spray the liquid. This cleaning method can prevent the cold cleaning liquid from being sprayed onto the surface of the photovoltaic panel 2 with a higher temperature, causing the photovoltaic panel 2 to be damaged due to the large temperature difference.

[0059] After using the cleaning liquid to clean back and forth several times, stop the first water pump 22, start the second water pump 23, pump water into the circulation box 17 and the U-shaped cavity 10, and then the water is sprayed out through multiple spray holes 11 to rinse the surface of the photovoltaic panel 2, which can effectively clean the cleaning liquid remaining on the surface of the photovoltaic panel 2. Of course, the pumped water temperature difference measuring instrument 31 will also perform temperature difference measurement. When the temperature difference between the water temperature and the surface of the photovoltaic panel 2 is less than five degrees Celsius, the spray hole 11 will open. On the contrary, the water will be heated so that the temperature difference is less than five degrees Celsius before the spray hole 11 opens to spray water.

[0060] In addition, when the outside temperature is below 0 degrees Celsius, the temperature difference measuring instrument 31 will also always cut off the power to the second electric push rod 29 through the PLC control circuit, and thus no liquid spraying operation will be performed, to avoid the cleaning liquid or water remaining on the surface of the photovoltaic panel 2 after the spraying and freezing, which will affect the power generation efficiency of the photovoltaic panel 2.

[0061] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An automated cleaning device for a photovoltaic panel surface, comprising a mounting frame (1), wherein a photovoltaic panel (2) is fixedly connected to the inner wall of the mounting frame (1), characterized in that: Also includes: The cleaning mechanism comprises two guide rails (3) symmetrically fixedly connected to the side walls of the mounting frame (1), the inner walls of the two guide rails (3) are slidably connected to sliders (4), the upper ends of the sliders (4) are commonly fixedly connected to a mounting seat (5), the side walls of the mounting seat (5) are fixedly connected to a cleaning seat (6), the lower end of the cleaning seat (6) is rotatably connected to a plurality of hollow rotating shafts (7), the lower end of each of the hollow rotating shafts (7) is fixedly connected to a cleaning sponge block (8), the mounting seat The side wall of the seat (5) is fixedly connected to a liquid supply block (9), a U-shaped cavity (10) is provided in the liquid supply block (9), a plurality of liquid spray holes (11) are provided on the inner wall of the U-shaped cavity (10), a dust discharge cavity (32) is provided in the cleaning seat (6), a plurality of dust suction ports (33) are provided on the inner wall of the dust discharge cavity (32), a plurality of fan blades (34) are fixedly connected to the side wall of the hollow rotating shaft (7) located in the dust suction port (33), and a dust discharge pipe is fixedly connected to the inner wall of the dust discharge cavity (32); A driving mechanism for driving the mounting seat (5) to move is installed on the mounting frame (1); The liquid supply block (9) is provided with a liquid supply mechanism for supplying liquid into the U-shaped cavity (10); A temperature adjustment mechanism is installed in the liquid spray hole (11), and the temperature adjustment mechanism includes a slide groove (26) provided in the liquid spray hole (11), the inner wall of the slide groove (26) is sealed and slidably connected to a sealing block (27), a plurality of mounting cavities (28) are provided in the liquid supply block (9), the inner wall of the mounting cavity (28) is fixedly connected to a second electric push rod (29), and the movable end of the second electric push rod (29) passes through the inner wall of the slide groove (26) and is fixedly connected to the sealing block (27); The sealing block (27) is provided with a lubricating mechanism, the lubricating mechanism comprising an oil pump chamber (35) provided in the sealing block (27), the inner wall of the oil pump chamber (35) being sealingly and slidingly connected to a pressure block (36), a second spring (37) being fixedly connected between the bottom of the oil pump chamber (35) and the pressure block (36), an oil storage chamber (38) being provided in the liquid supply block (9), the oil pump chamber (35) being connected to the oil storage chamber (38) via a one-way oil inlet pipe (25); The lubricating oil in the pump oil chamber (35) is squeezed into the hollow shaft (7) through the one-way oil supply pipe (40), and then the lubricating oil is absorbed by the cleaning sponge block (8).

2. The automatic cleaning device for photovoltaic panels according to claim 1, characterized in that: in: The driving mechanism comprises a mounting plate (12) fixedly connected to a side wall of the mounting frame (1); a first electric push rod (13) is fixedly connected to the side wall of the mounting plate (12); and a movable end of the first electric push rod (13) is fixedly connected to a side wall of the liquid supply block (9).

3. The automatic cleaning device for photovoltaic panels according to claim 2, characterized in that: in: The driving mechanism further comprises a mounting groove (14) provided in the cleaning seat (6), the upper ends of the plurality of hollow rotating shafts (7) are extended into the mounting groove (14), and the side walls of the hollow rotating shafts (7) located in the mounting groove (14) are fixedly connected with gears (15), and adjacent gears (15) are meshingly connected, and a rack (16) is fixedly connected to the side wall of one of the sliders (4), and the rack (16) is meshingly connected with one of the gears (15).

4. The automatic cleaning device for photovoltaic panels according to claim 1, characterized in that: in: The liquid supply mechanism includes a circulation box (17) fixedly connected to the side wall of the liquid supply block (9), the inner wall of the circulation box (17) is sealed and slidably connected to a sealing plate (18), and a plurality of first springs (19) are fixedly connected between the bottom of the circulation box (17) and the sealing plate (18), the circulation box (17) is connected to the U-shaped cavity (10) through a one-way liquid supply pipe (20), and the U-shaped cavity (10) is connected to the circulation box (17) through a one-way liquid return pipe (21).

5. The automatic cleaning device for photovoltaic panels according to claim 4, characterized in that: in: The liquid supply mechanism further comprises a first water pump (22) and a second water pump (23) fixedly connected to the side wall of the circulation box (17); the first water pump (22) and the second water pump (23) are both connected to the circulation box (17) via a pump liquid pipe (24).

6. The automatic cleaning device for photovoltaic panels according to claim 1, characterized in that: in: The temperature adjustment mechanism further comprises a plurality of electric heating plates (30) fixedly connected to the inner wall of the U-shaped cavity (10); a temperature difference measuring instrument (31) is installed at the lower end of the liquid supply block (9); and the temperature difference measuring instrument (31), the electric heating plates (30), the second electric push rod (29), and the power supply are connected via a PLC control circuit.

7. The automatic cleaning device for photovoltaic panels according to claim 6, characterized in that: in: The lubrication mechanism further comprises a plurality of rotary joints (39) fixedly connected to the inner wall of the mounting groove (14) via a bracket, the upper end of the hollow rotating shaft (7) being fixedly connected to the rotary joint (39), the inner wall of the pump oil chamber (35) being fixedly connected to a one-way oil supply pipe (40), the other end of the one-way oil supply pipe (40) being fixedly connected to the rotary joint (39).

8. The automatic cleaning device for photovoltaic panels according to claim 7, characterized in that: in: An oil filling pipe (41) is fixedly connected to the inner wall of the oil storage chamber (38), and a solenoid valve is installed on the inner wall of the oil filling pipe (41).

Images