Double-sided cleaning device for photovoltaic panel

Abstract

The invention discloses a photovoltaic panel double-sided cleaning device, and belongs to the technical field of cleaning equipment, the photovoltaic panel double-sided cleaning device comprises a conveying line, two upper guide rollers, two lower guide rollers and a cleaning belt, the two upper guide rollers are located on the upper side of a photovoltaic panel to be cleaned, the two lower guide rollers are located on the lower side of the photovoltaic panel to be cleaned, and an elastic cleaning layer is fixed on the cleaning belt; the cleaning belt bypasses the two upper guide rollers and the two lower guide rollers and enables the cleaning layer to abut against the two sides of the photovoltaic panel to be cleaned. The designed cleaning belt can abut against the upper side and the lower side of the photovoltaic panel under the cooperation of the two upper guide rollers and the two lower guide rollers, the cleaning belt can be pressed by further arranged pressing strips, so that a cleaning layer on the pressed part of the cleaning belt evenly abuts against the photovoltaic panel, and the wiping and cleaning force is more uniform.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and particularly relates to a double-sided cleaning device for photovoltaic panels. Background Art

[0002] During the production process of photovoltaic panels, they need to go through processing procedures such as cutting and edge grinding. Therefore, there will be dust and stains on the surface of the photovoltaic panels, which need to be cleaned. Existing cleaning methods include manual cleaning, water flow flushing, etc. Manual cleaning has a high labor intensity and low efficiency; water flow flushing uses a large amount of water. In existing cleaning methods, usually only one side of the photovoltaic panel can be cleaned at a time. When cleaning the other side, the photovoltaic panel needs to be flipped, which is time-consuming and laborious, and it is also easy to have uneven cleaning intensity during the cleaning process, resulting in incomplete cleaning.

[0003] Therefore, the present invention proposes a double-sided cleaning device for photovoltaic panels. Summary of the Invention

[0004] Aiming at the above-mentioned existing technical deficiencies, the purpose of the present invention is to provide a double-sided cleaning device for photovoltaic panels, which can clean both sides of the photovoltaic panel and improve the cleaning effect.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a double-sided cleaning device for photovoltaic panels, including:

[0006] A conveyor line for conveying photovoltaic panels;

[0007] Two upper guide rollers, two lower guide rollers and a cleaning belt. The two upper guide rollers are located above the photovoltaic panel to be cleaned, and the two lower guide rollers are located below the photovoltaic panel to be cleaned. An elastic cleaning layer is fixed on the cleaning belt, and the cleaning belt bypasses the two upper guide rollers and the two lower guide rollers and makes the cleaning layer contact both sides of the photovoltaic panel to be cleaned;

[0008] A guide roller group that cooperates with the two upper guide rollers and the two lower guide rollers to enable the cleaning belt to rotate in a cycle;

[0009] A width adjustment mechanism, which includes two roller frames and a lifting plate. The lifting plate is arranged to be lifted and lowered on the frame. The two roller frames are both slidably installed on the lifting plate. The two upper guide rollers are respectively rotatably installed on the two roller frames, and the two lower guide rollers are respectively rotatably installed on the two roller frames and are located below the upper guide rollers;

[0010] A pressing mechanism, which includes two pressing units. The two pressing units are respectively located on both sides of the photovoltaic panel and are used to press the cleaning belt against the photovoltaic panel. Each pressing unit includes two pressing strips that are slidably engaged with each other. The mutually remote ends of the two pressing strips are respectively hinged on the two roller frames.

[0011] Preferably, a cleaning box is further included, and the cleaning box is arranged below the cleaning belt, and the cleaning belt passes through the cleaning box.

[0012] Preferably, the guide roller group includes:

[0013] A tensioning roller, which is arranged on the frame and used for tensioning the cleaning belt;

[0014] A first guide roller, which is rotatably installed in the cleaning box;

[0015] A second guide roller, which is rotatably installed on the cleaning box;

[0016] The cleaning belt is sequentially wound around the first guide roller, the tensioning roller, two upper guide rollers, the second guide roller and two lower guide rollers.

[0017] Preferably, an extrusion mechanism for extruding the cleaning layer is arranged in the cleaning box, and the extrusion mechanism includes:

[0018] A back plate, which is fixed in the cleaning box and used for supporting the cleaning belt;

[0019] A fixing plate, which is fixed in the cleaning box, and a plurality of through holes are formed in the fixing plate;

[0020] A plurality of extrusion units, each extrusion unit includes a rod body inserted through the through hole and a pressing head fixed on the side of the rod body close to the cleaning belt, a stop block is fixed at one end of the rod body away from the pressing head, and a spring is sleeved on the rod body between the stop block and the fixing plate;

[0021] A rotating shaft, which is rotatably installed in the cleaning box, and a plurality of cams are fixed on the rotating shaft, and the plurality of cams respectively correspond to the plurality of extrusion units;

[0022] When the rotating shaft rotates, the cam intermittently pushes the stop block, so that the pressing head cooperates with the back plate to extrude the cleaning layer.

[0023] Preferably, a first straight gear is fixed on the roller shaft of the first guide roller, a transmission shaft is rotatably installed in the cleaning box, a second straight gear meshing with the first straight gear is fixed on the transmission shaft, and the transmission shaft and the rotating shaft are driven by a bevel gear set.

[0024] Preferably, a plurality of parallel guide rods are fixed on the lifting plate, the guide rods are slidably installed on the frame, a first lead screw is rotatably installed on the lifting plate, the first lead screw is parallel to the guide rods, and the first lead screw is in threaded cooperation with the frame.

[0025] Preferably, a rod sleeve is fixed on the lifting plate, a guide rod slidably matched with the rod sleeve is fixed on the roller frame, a motor is fixed on the lifting plate, a driving gear is fixed on the output shaft of the motor, racks parallel to the guide rod are fixed on both roller frames, and the two racks are respectively located on both sides of the driving gear and meshed with the driving gear.

[0026] Preferably, a guide rail is fixed on the roller frame, two sliders are slidably mounted on the guide rail, the ends of a pressing strip of one of the two pressing units are respectively hinged to the two sliders, a second lead screw is rotatably mounted on the roller frame, a threaded seat is threadedly mounted on the second lead screw, and two connecting rods are hinged to the threaded seat and respectively hinged to the two sliders.

[0027] Preferably, a pressure roller is rotatably mounted on the side of the pressing strip close to the cleaning belt.

[0028] Preferably, a spray head for spraying cleaning liquid on the cleaning layer is fixed on one of the roller frames.

[0029] The beneficial effects of the present invention are as follows:

[0030] The cleaning belt designed by the present invention can abut against the upper and lower sides of the photovoltaic panel under the cooperation of two upper guide rollers and two lower guide rollers. The further arranged pressing strip of the present invention can press the cleaning belt, so that the cleaning layer on the pressed part of the cleaning belt uniformly abuts against the photovoltaic panel, thereby making the wiping and cleaning force more uniform; when the second guide roller rotates, it can drive the cleaning belt to rotate in a cycle, so that the cleaning belt actively wipes the photovoltaic panel, improving the cleaning efficiency; the further designed cleaning box and extrusion mechanism of the present invention can play a role in cleaning the dirt on the cleaning layer. When the second guide roller rotates, the rotating shaft rotates, so that the cam intermittently pushes the pressing head to press the cleaning layer, making the cleaning layer absorb and discharge water repeatedly, thereby flushing the stains on the cleaning layer clean. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is a schematic diagram of the use state of a double-sided cleaning device for a photovoltaic panel provided by an embodiment of the present invention.

[0033] Figure 2 It is a schematic diagram of the structure of the cleaning box from a cut-away perspective of the present invention.

[0034] Figure 3 ForFigure 2 Partial enlarged view at position A in

[0035] Figure 4 Stereogram of the cleaning tank of the present invention from a sectional view

[0036] Figure 5 is Figure 4 Partial enlarged view at position B in

[0037] Figure 6 Stereogram of the width adjustment mechanism and pressing mechanism of the present invention

[0038] Figure 7 Schematic structural diagram of the extrusion mechanism of the present invention

[0039] Explanation of reference numerals in the drawings:

[0040] 1. Upper guide roller, 2. Lower guide roller, 3. Cleaning belt, 4. Cleaning layer, 5. Roller frame, 6. Lifting plate, 7. Frame, 8. Pressing strip, 9. Cleaning tank, 10. Tensioning roller, 11. First guide roller, 12. Second guide roller, 13. Back plate, 14. Fixed plate, 15. Rod body, 16. Pressing head, 17. Stopper, 18. Spring, 19. Rotating shaft, 20. Cam, 21. First straight gear, 22. Transmission shaft, 23. Second straight gear, 24. Guide rod, 25. First lead screw, 26. Rod sleeve, 27. Guide rod, 28. Motor, 29. Driving gear, 30. Rack, 31. Guide rail, 32. Slide block, 33. Second lead screw, 34. Threaded seat, 35. Connecting rod, 36. Pressing roller, 37. Nozzle. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Embodiment 1:

[0043] As Figures 1 to 7 shown, Embodiment 1 of the present invention provides a double-sided cleaning device for photovoltaic panels, including a roller conveyor line for conveying photovoltaic panels and a cleaning structure arranged on the conveyor line. When the conveyor line conveys the photovoltaic panels in a single direction, the cleaning mechanism can perform double-sided cleaning on the photovoltaic panels passing through the conveyor line, thereby removing the stains on the surface of the photovoltaic panels.

[0044] The cleaning structure of the present invention includes a frame 7, a cleaning tank 9 arranged below the frame 7, and a cleaning belt 3 that rotates in a cycle. A movable tension roller 10 is arranged on the frame 7, a first guiding roller 11 is rotatably installed in the cleaning tank 9, and a second guiding roller 12 is rotatably installed on the cleaning tank 9. Four parallel guiding rods 24 are also slidably inserted through the frame 7, and the four guiding rods 24 are all fixed on a lifting plate 6. A rotatable first lead screw 25 is installed on the lifting plate 6, and the first lead screw 25 is in threaded cooperation with the frame 7. When the first lead screw 25 is rotated, the lifting plate 6 can move along the axial direction of the guiding rod 24. Four sleeve bushes 26 are fixed to the bottom of the lifting plate 6, and the four sleeve bushes 26 are symmetrically distributed in pairs. Four guide rods 27 are respectively slidably inserted into the four sleeve bushes 26. Two of the guide rods 27 are fixed to a roller frame 5, and the other two guide rods 27 are fixed to another roller frame 5. One upper guide roller 1 and one lower guide roller 2 are fixed to each of these two roller frames 5.

[0045] The upper guide roller 1, the lower guide roller 2, the first guiding roller 11, the second guiding roller 12, and the tension roller 10 are all parallel, and the cleaning belt 3 is wound around the first guiding roller 11, the tension roller 10, the two upper guide rollers 1, the second guiding roller 12, and the two lower guide rollers 2 in sequence. When the second guiding roller 12 rotates, it can drive the cleaning belt 3 to rotate in a cycle.

[0046] During use, it is necessary to adjust the positions of the upper guide roller 1 and the lower guide roller 2 so that the photovoltaic panel can pass between the upper guide roller 1 and the lower guide roller 2. Combining Figure 1 and Figure 2 it can be known that the cleaning belt 3 bypasses the two upper guide rollers 1 and the two lower guide rollers 2, and an elastic cleaning layer 4 is fixed on the side of the cleaning belt 3 close to the photovoltaic panel. The cleaning layer 4 has water absorption. When the tension roller 10 is moved, the cleaning belt 3 can be tightened, so that the cleaning belt 3 can press the cleaning layer 4, making the cleaning layer 4 contact both sides of the photovoltaic panel to be cleaned. When the conveyor line conveys the photovoltaic panel, the cleaning layer 4 wipes both sides of the photovoltaic panel, thereby cleaning the photovoltaic panel.

[0047] However, relying on the tension of the cleaning belt 3 to press the cleaning layer 4 cannot provide a uniform pressure, which makes the wiping force on the photovoltaic panel different and may lead to incomplete cleaning. Therefore, the present invention designs a pressing mechanism. As Figure 6 shown, the pressing mechanism of the present invention includes two pressing units. Each pressing unit includes two pressing strips 8 that are slidably matched. These two pressing units are respectively located on the upper and lower sides of the photovoltaic panel, and the two pressing strips 8 in the same pressing unit are respectively hinged to the two roller frames 5. In this way, when the two roller frames 5 approach or move away from each other, it will drive the two pressing strips 8 to slide relative to each other, thereby changing the overall length of the pressing unit, so that the pressing unit can adapt to photovoltaic panels of various widths.

[0048] The pressing unit is located on the side of the cleaning belt 3 away from the photovoltaic panel. In this way, the pressing strip 8 can apply pressure to the cleaning belt 3, causing the cleaning layer 4 to abut against the photovoltaic panel. Since the distance between the pressing strip 8 and the photovoltaic panel is the same, the contact pressure between the part of the cleaning layer 4 pressed by the pressing strip 8 and the photovoltaic panel is basically the same, making the cleaning effect tend to be consistent. To reduce the friction between the pressing strip 8 and the cleaning belt 3, a rotatable pressure roller 36 is installed on the side of the pressing strip 8 close to the photovoltaic panel. In fact, it is the pressure roller 36 that contacts the cleaning belt 3.

[0049] To adjust the distance between the two roller frames 5 so as to adjust the overall length of the pressing unit, as Figure 6 shown, in the present invention, a motor 28 is fixedly installed on the lifting plate 6, and a driving gear 29 is fixedly installed on the output shaft of the motor 28. Rack bars 30 are fixedly installed on both roller frames 5. These two rack bars 30 are both parallel to the guide rod 27. At the same time, these two rack bars 30 are respectively located on both sides of the driving gear 29 and mesh with the driving gear 29. When the motor 28 operates, the motor 28 drives the driving gear 29 to rotate, and then drives the rack bars 30 to move, causing the two roller frames 5 to approach or move away from each other, realizing the adjustment of the overall length of the pressing unit.

[0050] It should be noted that when adjusting the distance between the roller frames 5, it is also necessary to pay attention to adjusting the position of the tension roller 10 to ensure that the tension of the cleaning belt 3 is within an appropriate range.

[0051] Embodiment 2:

[0052] On the basis of Embodiment 1, in order to timely clean the stains on the cleaning layer 4 and prevent the photovoltaic panel from being contaminated by the cleaning layer 4, the present invention also designs an extrusion mechanism in the cleaning box 9 for extruding the cleaning layer 4. Specifically, as Figure 2 、 Figure 3 and Figure 7As shown, the extrusion mechanism designed by the present invention includes a back plate 13 fixed in the cleaning box 9, a fixed plate 14 fixed on the side of the cleaning belt 3 away from the back plate 13, and a plurality of extrusion units, wherein the fixed plate 14 is provided with a plurality of through holes, and each through hole corresponds to an extrusion unit. The extrusion unit includes a rod body 15 inserted in the through hole and a pressure head 16 fixed on the side of the rod body 15 close to the cleaning belt 3, and a stopper 17 is fixed on the end of the rod body 15 away from the pressure head 16. A rotating shaft 19 is also rotatably installed in the cleaning box 9, and a transmission mechanism is arranged between the rotating shaft 19 and the roller shaft of the first guide roller 11. When the roller shaft rotates, the rotating shaft 19 can rotate, and a plurality of cams 20 respectively matched with a plurality of stoppers 17 are fixed on the rotating shaft 19. When the rotating shaft 19 rotates, the cam 20 pushes the stopper 17 to move, so that the stopper 17 squeezes the pressure head 16 toward the cleaning layer 4. In order to reset the pressure head 16 , a spring 18 is sleeved on the rod body 15 between the stopper 17 and the fixing plate 14 , so that the stopper 17 can be reset under the action of the spring 18 when the cam 20 does not press the stopper 17 .

[0053] The transmission mechanism designed in the present invention includes a first spur gear 21 fixed on the roller shaft of the second guide roller 12 and a transmission shaft 22 rotatably installed in the cleaning box 9, and a second spur gear 23 meshing with the first spur gear 21 is fixed on the transmission shaft 22, so that when the second guide roller 12 rotates, the transmission shaft 22 can rotate, and the transmission shaft 22 and the rotating shaft 19 are transmitted through a bevel gear set. Therefore, when the second guide roller 12 rotates, that is, when the cleaning belt 3 rotates cyclically, the rotating shaft 19 can rotate continuously, so that the cam 20 intermittently pushes the pressure head 16 to cooperate with the back plate 13 to squeeze the cleaning layer 4, so that the cleaning layer 4 repeatedly absorbs and squeezes out the cleaning liquid in the cleaning box 9, thereby washing away the stains in the cleaning layer 4.

[0054] In the present invention, a nozzle 37 is fixed on one of the roller frames 5, and the nozzle 37 can be used to spray cleaning liquid onto the cleaning layer 4 after cleaning, so that the cleaning layer 4 containing the cleaning liquid can more easily wash away the stains on the photovoltaic panel.

[0055] Embodiment three:

[0056] On the basis of the first and second embodiments, the present invention is capable of adjusting the force of the pressing strip 8 pressing the cleaning layer 4, such as Figure 4 and Figure 5As shown in the figure, a guide rail 31 is fixed on the roller frame 5, and two sliders 32 are slidably mounted on the guide rail 31. The end of the pressing strip 8 is hinged to the slider 32. A rotatable second lead screw 33 is installed on the roller frame 5, and a threaded seat 34 is threadedly mounted on the second lead screw 33. Two connecting rods 35 are hinged to the threaded seat 34, and the two connecting rods 35 are respectively hinged to the two sliders 32. Through the above settings, when the second lead screw 33 is rotated, the threaded seat 34 can be driven to move on the second lead screw 33, and then the position of the slider 32 on the guide rail 31 can be changed through the connecting rod 35, and further the distance between the two pressing units can be changed, and the pressing force of the pressing strip 8 on the cleaning layer 4 can be adjusted.

[0057] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A photovoltaic panel double-sided cleaning device, characterized in that: include: A conveyor line, wherein the conveyor line is used to convey photovoltaic panels; Two upper guide rollers (1), two lower guide rollers (2) and a cleaning belt (3), wherein the two upper guide rollers (1) are located on the upper side of the photovoltaic panel to be cleaned, and the two lower guide rollers (2) are located on the lower side of the photovoltaic panel to be cleaned, and an elastic cleaning layer (4) is fixed on the cleaning belt (3), and the cleaning belt (3) passes over the two upper guide rollers (1) and the two lower guide rollers (2) and makes the cleaning layer (4) contact the two sides of the photovoltaic panel to be cleaned; A guide roller group, wherein the guide roller group cooperates with two upper guide rollers (1) and two lower guide rollers (2) to enable the cleaning belt (3) to circulate and rotate; A width adjustment mechanism, the width adjustment mechanism comprising two roller frames (5) and a lifting plate (6), the lifting plate (6) being lifted and lowered on a frame (7), the two roller frames (5) being slidably mounted on the lifting plate (6), the two upper guide rollers (1) being rotatably mounted on the two roller frames (5), and the two lower guide rollers (2) being rotatably mounted on the two roller frames (5) and being located below the upper guide rollers (1); The pressing mechanism comprises two pressing units, the two pressing units are respectively located on both sides of the photovoltaic panel and are used to press the cleaning belt (3) toward the photovoltaic panel. The pressing unit comprises two slidingly matched pressing strips (8), and the ends of the two pressing strips (8) that are away from each other are respectively hinged on two roller frames (5).

2. A photovoltaic panel double-sided cleaning device as claimed in claim 1, characterized in that: It also comprises a cleaning box (9), which is arranged below the cleaning belt (3), and the cleaning belt (3) passes through the cleaning box (9).

3. A photovoltaic panel double-sided cleaning device as claimed in claim 2, characterized in that: The guide roller group comprises: A tensioning roller (10), the tensioning roller (10) being arranged on the frame (7) and being used for tensioning the cleaning belt (3); A first guide roller (11), the first guide roller (11) being rotatably mounted in the cleaning box (9); a second guide roller (12), the second guide roller (12) being rotatably mounted on the cleaning box (9); The cleaning belt (3) is sequentially wound around a first guide roller (11), a tensioning roller (10), two upper guide rollers (1), a second guide roller (12) and two lower guide rollers (2).

4. A photovoltaic panel double-sided cleaning device as claimed in claim 3, characterized in that: The cleaning box (9) is provided with an extrusion mechanism for extruding the cleaning layer (4), and the extrusion mechanism comprises: A back plate (13), the back plate (13) being fixed in the cleaning box (9) and used for supporting the cleaning belt (3); A fixing plate (14), the fixing plate (14) being fixed in the cleaning box (9), and the fixing plate (14) being provided with a plurality of through holes; A plurality of squeezing units, each of which comprises a rod body (15) inserted into the through hole and a pressure head (16) fixed to a side of the rod body (15) close to the cleaning belt (3); a stopper (17) is fixed to one end of the rod body (15) away from the pressure head (16); and a spring (18) is sleeved on the rod body (15) between the stopper (17) and the fixed plate (14); A rotating shaft (19), the rotating shaft (19) being rotatably mounted in the cleaning box (9), a plurality of cams (20) being fixed on the rotating shaft (19), the plurality of cams (20) respectively corresponding to the plurality of extrusion units; When the rotating shaft (19) rotates, the cam (20) intermittently pushes the stopper (17), so that the pressure head (16) cooperates with the back plate (13) to squeeze the cleaning layer (4).

5. A photovoltaic panel double-sided cleaning device as claimed in claim 4, characterized in that: A first spur gear (21) is fixed on the roller shaft of the first guide roller (11), a transmission shaft (22) is rotatably mounted in the cleaning box (9), a second spur gear (23) meshing with the first spur gear (21) is fixed on the transmission shaft (22), and transmission is carried out between the transmission shaft (22) and the rotating shaft (19) via a bevel gear set.

6. A photovoltaic panel double-sided cleaning device as claimed in claim 1, characterized in that: A plurality of parallel guide rods (24) are fixed on the lifting plate (6), and the guide rods (24) are slidably mounted on the frame (7). A first screw rod (25) is rotatably mounted on the lifting plate (6), and the first screw rod (25) is parallel to the guide rods (24), and the first screw rod (25) is threadedly matched with the frame (7).

7. A photovoltaic panel double-sided cleaning device as claimed in claim 1, characterized in that: A rod sleeve (26) is fixed on the lifting plate (6), a guide rod (27) slidably matched with the rod sleeve (26) is fixed on the roller frame (5), a motor (28) is fixed on the lifting plate (6), a driving gear (29) is fixed on the output shaft of the motor (28), and racks (30) parallel to the guide rod (27) are fixed on the two roller frames (5), and the two racks (30) are respectively located on both sides of the driving gear (29) and mesh with the driving gear (29).

8. A photovoltaic panel double-sided cleaning device as claimed in claim 1, characterized in that: A guide rail (31) is fixed on the roller frame (5), two sliders (32) are slidably mounted on the guide rail (31), the ends of one pressing strip (8) in the two pressing units are respectively hinged on the two sliders (32), a second screw rod (33) is rotatably mounted on the roller frame (5), a threaded seat (34) is threadedly mounted on the second screw rod (33), two connecting rods (35) are hinged on the threaded seat (34), and the two connecting rods (35) are respectively hinged to the two sliders (32).

9. A photovoltaic panel double-sided cleaning device as claimed in claim 1, characterized in that: A pressure roller (36) is rotatably mounted on one side of the pressing strip (8) close to the cleaning belt (3).

10. A photovoltaic panel double-sided cleaning device as claimed in claim 1, characterized in that: A spray head (37) for spraying cleaning liquid onto the cleaning layer (4) is fixed on one of the roller frames (5).

Images