Automatic dust cleaning device and dust cleaning method for solar photovoltaic module

Abstract

The invention discloses an automatic dust cleaning device and a dust cleaning method for a solar photovoltaic module, and relates to the field of cleaning equipment. Rainwater can be collected through the rainwater collecting box, and when the rainwater collecting box is filled with the rainwater and the floating ball valve is completely immersed below the liquid level, the floating ball valve overcomes the locking force of the locking assembly under the hydraulic buoyancy effect to float upwards, so that sealing of the water outlet is relieved, and the rainwater collecting box can be used for collecting rainwater. Then rainwater in the rainwater collecting box is sprayed to the surface of the solar photovoltaic module obliquely installed on one side of the support through a water outlet and a high-pressure spray head, cleaning and dust removal are conducted on the solar photovoltaic module, and due to the locking effect of the locking assembly on the floating ball valve, dust on the solar photovoltaic module can be removed; and when the rainwater collecting box is filled with rainwater, the floating ball valve is opened, and the high-pressure spray head is used for spraying, flushing and deashing the solar photovoltaic module, so that the water pressure intensity and the impact force when the high-pressure spray head discharges water are improved, and dust impurities with relatively high adhesiveness on the surface of the solar photovoltaic module are flushed and removed.

Description

Technical Field

[0001] The present invention belongs to the field of cleaning equipment, and in particular, relates to an automatic dust cleaning device and a dust cleaning method for solar photovoltaic components. Background Art

[0002] Solar photovoltaic modules are devices that absorb sunlight and convert solar radiation energy directly or indirectly into electrical energy through the photoelectric effect or photochemical effect. Since solar photovoltaic modules need to be installed outdoors, dust will accumulate on their surface during use, which will affect the power generation efficiency of solar photovoltaic modules.

[0003] Chinese patent CN113102428B discloses a fully automatic dust cleaner for solar photovoltaic panels, in which the surface of the solar photovoltaic components is washed and cleaned by rainwater on rainy days, and the rainwater on the surface of the solar photovoltaic components is drained by setting a water guide channel and a drainage channel.

[0004] However, in actual application, unless it is a heavy rain or rainstorm, the impact of rainwater is generally small, and it can only wash away some dust on the surface of solar photovoltaic modules, but cannot wash away some dust impurities with strong adhesion, thus affecting the cleaning effect and power generation efficiency of solar photovoltaic modules. Summary of the invention

[0005] In view of the problems in the related art, the present invention proposes an automatic dust cleaning device and a dust cleaning method for a solar photovoltaic module to overcome the above-mentioned technical problems existing in the existing related art.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is an automatic dust cleaning device, comprising a bracket, a rainwater collection box is fixedly installed on the top surface of the bracket, a flushing and dust cleaning mechanism is installed at the bottom end of the rainwater collection box, the flushing and dust cleaning mechanism comprises a water outlet, a high-pressure nozzle, a float valve and a locking assembly, the water outlet is arranged at the bottom end of the rainwater collection box, the high-pressure nozzle is connected and installed at the outer end of the water outlet, the float valve is locked and sealed at the inlet end of the water outlet through the locking assembly, and the float valve can float up under the action of hydraulic buoyancy to overcome the locking force of the locking assembly when the rainwater collection box is filled with water, so as to release the seal of the water outlet; A reciprocating swing mechanism capable of driving the high-pressure nozzle to swing back and forth is also installed below the rainwater collection box; The reciprocating swing mechanism includes a hydraulic drive component and a reciprocating swing component. The reciprocating swing component is rotatably installed on one side of the outside of the water outlet, and the high-pressure nozzle is installed on the swing end of the reciprocating swing component. The hydraulic drive component is installed in the water outlet and is transmission-connected to the reciprocating swing component. The hydraulic drive component can drive the reciprocating swing component to swing back and forth under the action of the hydraulic pressure when water flows out of the water outlet, so as to drive the high-pressure nozzle to swing back and forth.

[0007] Furthermore, a rainwater gutter is arranged at the top of the rainwater collection box, and a water filtering hole connected to the rainwater collection box is arranged at the bottom of the rainwater gutter.

[0008] Furthermore, the float valve includes a limit frame, which is fixedly installed inside the rainwater collection box and located above the water outlet. A lifting rod is slidably inserted at the top of the limit frame, and a sealing plug that can abut and seal the water outlet is fixedly installed at the bottom end of the lifting rod. A float is fixedly installed at the top of the water outlet.

[0009] Furthermore, the locking assembly includes a limit cylinder, a limit plate and an elastic pin buckle. The limit cylinder is fixedly installed at the bottom end of the limit frame and is located at the outer ring of the lifting rod. The limit plate is fixedly installed on the lifting rod. The limit plate is slidably connected to the inner ring of the limit cylinder, and the limit plate is locked with the limit cylinder through the elastic pin buckle.

[0010] Furthermore, the elastic pin buckle includes a pin hole and a telescopic sliding hole, the pin hole is opened on the cylinder wall of the limiting cylinder, the telescopic sliding hole is opened on the outer circumferential surface of the limiting plate, a telescopic slider is slidably installed inside the telescopic sliding hole, a pressure spring is abutted against the inner end of the telescopic slider, a pin shaft is fixedly installed on the outer end of the telescopic slider, and a cylindrical head is provided on the outer end of the pin shaft that can be slidably inserted into the pin hole.

[0011] Furthermore, a return spring is sleeved on the outer ring of the upper end of the lifting rod, one end of the return spring abuts against the bottom surface of the limit frame, and the other end of the return spring abuts against the top surface of the limit plate; The inner circle of the inlet end of the water outlet is provided with a tapered groove, and the bottom end of the sealing plug is provided with a tapered boss that matches the tapered groove.

[0012] Furthermore, the water outlet is connected to the high-pressure nozzle via a hose.

[0013] Further, the reciprocating swing assembly includes a support plate and a rotating shaft, the support plate is fixedly mounted on the outer wall of the water outlet, a swing frame is rotatably mounted on the top surface of the support plate, a guide slide groove is provided on the swing frame, a mounting plate is provided at one end of the swing frame, and the high-pressure nozzle is fixedly mounted on the mounting plate; The rotating shaft is rotatably mounted on the bracket and is located below the swing frame. A cam is fixedly mounted on the top of the rotating shaft. A guide block is rotatably mounted on the top of one end of the cam. The guide block is slidably mounted in the guide slot.

[0014] Furthermore, the hydraulic drive assembly includes a driven gear and a transmission shaft, the transmission shaft is rotatably installed at the bottom end of the water outlet, the top end of the transmission shaft is fixedly installed with a turbine located inside the water outlet, the bottom end of the transmission shaft extends to the outside of the water outlet and is fixedly installed with a transmission gear, the driven gear is fixedly installed at the bottom end of the rotating shaft and is meshingly connected with the transmission gear.

[0015] The present invention also discloses a method for cleaning a solar photovoltaic module, and the specific steps are as follows: On rainy days, the rainwater collection box collects rainwater, so that the liquid level in the rainwater collection box gradually rises, the float valve gradually immerses in the rainwater, and the buoyancy of the float valve gradually increases. When the rainwater collection box is gradually filled with rainwater, the float valve is completely immersed under the liquid surface. At this time, the float valve floats up under the action of hydraulic buoyancy to overcome the locking force of the locking component to release the seal of the water outlet. After that, the rainwater in the rainwater collection box is sprayed through the water outlet and the high-pressure nozzle to the surface of the solar photovoltaic module installed obliquely on one side of the bracket to clean and remove dust from the solar photovoltaic module. At the same time, the hydraulic drive component drives the reciprocating swing component to swing back and forth under the hydraulic action when water flows out of the water outlet, so that the reciprocating swing component drives the high-pressure nozzle to swing back and forth above the solar photovoltaic component to increase the spray cleaning range of the high-pressure nozzle.

[0016] The present invention has the following beneficial effects: 1. The present invention can collect rainwater through a rainwater collection box. When the rainwater collection box is filled with rainwater and the float valve is completely immersed under the liquid surface, the float valve overcomes the locking force of the locking component and floats up under the action of hydraulic buoyancy to release the seal of the water outlet. Thereafter, the rainwater in the rainwater collection box is sprayed to the surface of the solar photovoltaic component obliquely installed on one side of the bracket through the water outlet and the high-pressure nozzle, so as to clean and remove dust from the solar photovoltaic component. Among them, due to the locking effect of the locking component on the float valve, the float valve is opened only when the rainwater collection box is filled with rainwater to spray, flush and clean the solar photovoltaic component through the high-pressure nozzle. At this time, the water volume in the rainwater collection box is sufficient and the water pressure is relatively large, so that the rainwater can be pressurized and sprayed out from the high-pressure nozzle under the action of the large water pressure and gravitational potential energy, so as to increase the water pressure strength and impact force when the high-pressure nozzle is discharged, and then the dust and impurities with strong adhesion on the surface of the solar photovoltaic component are flushed and removed, thereby improving the cleaning effect and power generation efficiency of the solar photovoltaic component.

[0017] 2. In the present invention, when rainwater in the rainwater collection box is used to flush and clean the solar photovoltaic panel assembly through the water outlet and the high-pressure nozzle, the hydraulic drive assembly can drive the reciprocating swing assembly to swing back and forth under the hydraulic action of water flowing out of the water outlet, so that the reciprocating swing assembly drives the high-pressure nozzle to swing back and forth above the solar photovoltaic assembly, so as to increase the spraying and flushing range of the high-pressure nozzle, so that the high-pressure nozzle can comprehensively flush and clean the surface of the solar photovoltaic panel, thereby further improving the cleaning effect and power generation efficiency of the solar photovoltaic assembly.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, they can also obtain drawings based on these drawings without paying creative work.

[0020] Figure 1 This is one of the three-dimensional structural schematic diagrams of the automatic dust cleaning device of the present invention; Figure 2 For the present invention Figure 1 A local enlarged structural schematic diagram; Figure 3 This is the second schematic diagram of the three-dimensional structure of the automatic dust cleaning device of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at B; Figure 5 The third schematic diagram of the three-dimensional structure of the automatic dust cleaning device of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the local enlarged structure at C; Figure 7 For the present invention Figure 5 Schematic diagram of the local enlarged structure at D.

[0021] In the figure: 1. bracket; 2. rainwater collection box; 21. rainwater gutter; 22. water filter hole; 3. flushing and cleaning mechanism; 31. water outlet; 32. hose; 33. high-pressure nozzle; 34. float; 35. limit frame; 36. sealing plug; 37. lifting rod; 38. limit cylinder; 39. limit plate; 310. reset spring; 311. pin hole; 312. telescopic sliding hole; 313. pressure spring; 314. telescopic sliding block; 315. pin shaft; 4. reciprocating swing mechanism; 41. support plate; 42. swing frame; 43. guide block; 44. guide slide; 45. mounting plate; 46. cam; 47. rotating shaft; 48. driven gear; 49. transmission shaft; 410. transmission gear; 411. turbine. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0023] In the description of the present invention, it is necessary to understand that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention.

[0024] Embodiment 1 See also Figure 1-Figure 4 As shown, the present invention is an automatic dust cleaning device, comprising a bracket 1, a rainwater collection box 2 is fixedly installed on the top surface of the bracket 1, a flushing and dust cleaning mechanism 3 is installed at the bottom end of the rainwater collection box 2, and the flushing and dust cleaning mechanism 3 includes a water outlet 31, a high-pressure nozzle 33, a float valve and a locking component. The water outlet 31 is arranged at the bottom end of the rainwater collection box 2, the high-pressure nozzle 33 is connected and installed at the outer end of the water outlet 31, and the float valve is installed at the inlet end of the water outlet 31 through the locking component to lock and seal, and the float valve can overcome the locking force of the locking component under the action of hydraulic buoyancy when the rainwater collection box 2 is filled with water. Float up to release the seal of the water outlet 31; a reciprocating swing mechanism 4 capable of driving the high-pressure nozzle 33 to swing back and forth is also installed below the rainwater collection box 2; the reciprocating swing mechanism 4 includes a hydraulic drive component and a reciprocating swing component, the reciprocating swing component is rotatably installed on one side of the outside of the water outlet 31, and the high-pressure nozzle 33 is installed at the swing end of the reciprocating swing component, the hydraulic drive component is installed in the water outlet 31 and is transmission-connected to the reciprocating swing component, and the hydraulic drive component can drive the reciprocating swing component to swing back and forth under the hydraulic action when water flows out of the water outlet 31, so as to drive the high-pressure nozzle 33 to swing back and forth; Specifically, when the automatic dust cleaning device is in use, the rainwater collection box 2 can collect rainwater on rainy days, so that the liquid level therein gradually rises, the float valve gradually immerses in the rainwater, and the buoyancy of the float valve gradually increases. When the rainwater collection box 2 is gradually filled with rainwater, the float valve is completely immersed in the liquid surface. At this time, the float valve overcomes the locking force of the locking component under the action of the hydraulic buoyancy and floats up to release the seal of the water outlet 31. After that, the rainwater in the rainwater collection box 2 is sprayed through the water outlet 31 and the high-pressure nozzle 33 to the surface of the solar photovoltaic component obliquely installed on one side of the bracket 1, so as to clean and remove dust from the solar photovoltaic component; at the same time, the hydraulic drive component drives the reciprocating swing component to swing back and forth under the hydraulic action when water flows out of the water outlet 31, so that the reciprocating swing component drives the high-pressure nozzle 33 to swing back and forth above the solar photovoltaic component, so as to increase the spraying and cleaning range of the high-pressure nozzle 33; Among them, due to the locking effect of the locking component on the float valve, the float valve is opened only when the rainwater collection box 2 is filled with rainwater to spray, flush and clean the solar photovoltaic components through the high-pressure nozzle 33. At this time, the water volume in the rainwater collection box 2 is sufficient and the water pressure is relatively large, so that the rainwater can be pressurized and sprayed out from the high-pressure nozzle 33 under the action of the large water pressure and gravitational potential energy, so as to increase the water pressure strength and impact force of the high-pressure nozzle 33 when the water is discharged, and then flush and remove the dust and impurities with strong adhesion on the surface of the solar photovoltaic components, thereby improving the cleaning effect and power generation efficiency of the solar photovoltaic components; at the same time, through the cooperation of the hydraulic drive component and the reciprocating swing component, the high-pressure nozzle 33 can be automatically driven to swing back and forth during flushing and cleaning, so as to increase the spraying and cleaning range of the high-pressure nozzle 33, so that the high-pressure nozzle 33 can comprehensively flush and clean the surface of the solar photovoltaic panel, further improving the cleaning effect of the solar photovoltaic components.

[0025] Furthermore, a rainwater gutter 21 is provided at the top of the rainwater collection box 2, and a water filter hole 22 connected to the rainwater collection box 2 is provided at the bottom of the rainwater gutter 21. The rainwater gutter 21 can isolate and protect the interior of the rainwater collection box 2 to prevent external dust and impurities from entering the rainwater collection box 2, and at the same time prevent the rainwater collected in the rainwater collection box 2 from evaporating and losing. On rainy days, the rainwater gutter 21 can receive and collect rainwater, and transport the collected rainwater to the rainwater collection box 2 for storage through the water filter hole 22.

[0026] Furthermore, one end of the rainwater collection box 2 is also connected to a tap water pipe. When it has not rained for a long time and the solar photovoltaic components cannot be automatically flushed and cleaned by rainwater, water can be injected into the rainwater collection box 2 through the tap water pipe. When the rainwater collection box 2 is about to be filled with water, the float valve opens, and the tap water can be pressurized and sprayed out from the high-pressure nozzle 33 under the action of the large water pressure and gravitational potential energy in the rainwater collection box 2 to flush and clean the solar photovoltaic components. Therefore, when it does not rain, the tap water can be stored and pressurized by the automatic dust cleaning device, and then the solar photovoltaic components can be flushed and cleaned without manual cleaning, making the cleaning process of the solar photovoltaic components more convenient.

[0027] Embodiment 2 See also Figure 3-Figure 7 As shown, the difference between this embodiment and the above embodiment is that the float valve includes a limit frame 35, the limit frame 35 is fixedly installed inside the rainwater collection box 2 and is located above the water outlet 31, the top of the limit frame 35 is slidably inserted with a lifting rod 37, the bottom end of the lifting rod 37 is fixedly installed with a sealing plug 36 that can abut and seal the water outlet 31, and the top of the water outlet 31 is fixedly installed with a float 34; the locking component includes a limit cylinder 38, a limit plate 39 and an elastic pin buckle, the limit cylinder 38 is fixedly installed at the bottom end of the limit frame 35 and is located at the outer ring of the lifting rod 37, and the limit plate 39 is fixedly installed on the lifting rod 37 The limit plate 39 is slidably engaged with the inner ring of the limit cylinder 38, and the limit plate 39 is pinned and locked with the limit cylinder 38 by an elastic pin buckle; the elastic pin buckle includes a pin hole 311 and a telescopic sliding hole 312, the pin hole 311 is arranged on the cylinder wall of the limit cylinder 38, the telescopic sliding hole 312 is arranged on the outer circumferential surface of the limit plate 39, a telescopic sliding block 314 is slidably installed inside the telescopic sliding hole 312, a pressure spring 313 is abutted against the inner side end of the telescopic sliding block 314, a pin shaft 315 is fixedly installed on the outer side end of the telescopic sliding block 314, and a cylindrical head which can be slidably inserted into the pin hole 311 is arranged on the outer side end of the pin shaft 315; The lifting rod 37 and the sealing plug 36 are locked by the pin connection of the pin hole 311 and the pin shaft 315, so that the sealing plug 36 is sealed against the water outlet 31 to seal the water outlet 31. On rainy days, as the water level in the rainwater collection box 2 gradually rises, the float 34 is gradually immersed in the rainwater, so that the buoyancy of the float 34 gradually increases. When the rainwater collection box 2 is about to be filled with water and the float 34 is immersed under the liquid surface, the buoyancy of the float 34 reaches the maximum value. At this time, the buoyancy of the float 34 is greater than the pin connection locking force between the pin hole 311 and the pin shaft 315, and the float 34 drives the lifting rod 37 and The limit plate 39 moves upward, and at the same time, the cylindrical head at the outer end of the pin shaft 315 gradually retracts into the telescopic sliding hole 312 under the abutment and guiding action of the inner wall of the pin hole 311, so as to release the pin connection lock between the pin hole 311 and the pin shaft 315, so that the limit plate 39, the lifting rod 37 and the float 34 are no longer subjected to the locking force. After that, the float 34 can continue to move upward under the action of the hydraulic buoyancy, and drive the sealing plug 36 upward through the lifting rod 37, so that the inlet end of the water outlet 31 is fully opened. After that, the rainwater in the rainwater collection box 2 can be transported to the high-pressure nozzle 33 through the water outlet 31, and sprayed out through the high-pressure nozzle 33.

[0028] Furthermore, the outer ring of the upper end of the lifting rod 37 is sleeved with a return spring 310, one end of the return spring 310 abuts against the bottom surface of the limit frame 35, and the other end of the return spring 310 abuts against the top surface of the limit plate 39; the inner ring of the inlet end of the water outlet 31 is provided with a conical groove, and the bottom end of the sealing plug 36 is provided with a conical boss that matches the conical groove; As the rainwater in the rainwater collection box 2 is sprayed outward through the high-pressure nozzle 33, the liquid level in the rainwater collection box 2 gradually decreases, and at the same time, the limit plate 39 gradually moves downward and resets under the reset elastic force of the reset spring 310, and drives the lifting rod 37 and the sealing plug 36 to move downward and reset. When the liquid level in the rainwater collection box 2 is lower than the installation height of the float 34, the sealing plug 36 abuts against the inlet end of the water outlet 31 again under the reset elastic force of the reset spring 310, and at the same time, the limit plate 39 drives the pin shaft 315 to move downward and reset, so that the pin shaft 315 moves again and is inserted into the pin hole 311 under the elastic force of the pressure spring 313, thereby pinning and locking the sealing plug 36 again; and the sealing plug 36 abuts and seals with the inlet end of the water outlet 31 through the conical structure, which can improve the sealing effect of the water outlet 31 and prevent water seepage from the water outlet 31.

[0029] Embodiment 3 See also Figure 1-Figure 4 , Figure 7As shown, the difference between this embodiment and the above embodiment is that the reciprocating swing assembly includes a support plate 41 and a rotating shaft 47, the support plate 41 is fixedly mounted on the outer wall of the water outlet 31, the top surface of the support plate 41 is rotatably mounted with a swing frame 42, the swing frame 42 is provided with a guide slide 44, one end of the swing frame 42 is provided with a mounting plate 45, the mounting plate 45 is fixedly mounted with a high-pressure nozzle 33, the water outlet 31 and the high-pressure nozzle 33 are connected through a hose 32; the rotating shaft 47 is rotatably mounted on the bracket 1 and is located below the swing frame 42, and the top of the rotating shaft 47 is fixedly mounted. A cam 46 is fixedly installed, and a guide block 43 is rotatably installed at the top end of one end of the cam 46, and the guide block 43 is slidably clamped in the guide groove 44; the hydraulic drive assembly includes a driven gear 48 and a transmission shaft 49, the transmission shaft 49 is rotatably installed at the bottom end of the water outlet 31, and a turbine 411 located inside the water outlet 31 is fixedly installed at the top end of the transmission shaft 49, and the bottom end of the transmission shaft 49 extends to the outside of the water outlet 31 and is fixedly installed with a transmission gear 410, and the driven gear 48 is fixedly installed at the bottom end of the rotating shaft 47 and is meshed and connected with the transmission gear 410; When the water outlet 31 is opened to supply water to the high-pressure nozzle 33, the turbine 411 rotates driven by the water flow in the water outlet 31, and drives the transmission shaft 49 and the transmission gear 410 to rotate synchronously. When the transmission gear 410 rotates, it engages and drives the driven gear 48 to rotate, so as to drive the rotating shaft 47 and the cam 46 to rotate. When the cam 46 rotates, it drives the guide block 43 to make a circular motion. At the same time, the guide block 43 slides back and forth in the guide groove 44 in the swing frame 42, so as to drive the swing frame 42 to swing back and forth through the cooperation of the guide block 43 and the guide groove 44. During the reciprocating swing process, the swing frame 42 drives the high-pressure nozzle 33 at its end to swing back and forth, so that the high-pressure nozzle 33 can comprehensively rinse and clean the surface of the solar photovoltaic panel assembly.

[0030] Embodiment 4 This embodiment discloses a method for cleaning a solar photovoltaic module, and the specific steps are as follows: On rainy days, the rainwater collection box 2 collects rainwater, so that the liquid level in the rainwater collection box 2 gradually rises, so that the float valve gradually immerses in the rainwater, and the buoyancy of the float valve gradually increases. When the rainwater collection box 2 is gradually filled with rainwater, the float valve is completely immersed under the liquid surface. At this time, the float valve floats up under the action of hydraulic buoyancy to overcome the locking force of the locking component to release the seal of the water outlet 31. After that, the rainwater in the rainwater collection box 2 is sprayed through the water outlet 31 and the high-pressure nozzle 33 to the surface of the solar photovoltaic component obliquely installed on one side of the bracket 1, so as to clean and remove dust from the solar photovoltaic component; At the same time, the hydraulic drive component drives the reciprocating swing component to swing back and forth under the hydraulic action when water flows out of the water outlet 31, so that the reciprocating swing component drives the high-pressure nozzle 33 to swing back and forth above the solar photovoltaic component to increase the spray cleaning range of the high-pressure nozzle 33.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the invention, so that those skilled in the art can understand and use the invention well.

Claims

1. An automatic dust cleaning device, comprising a bracket, characterized in that: A rainwater collection box is fixedly installed on the top surface of the bracket, and a flushing and cleaning mechanism is installed at the bottom end of the rainwater collection box. The flushing and cleaning mechanism includes a water outlet, a high-pressure nozzle, a float valve and a locking assembly. The water outlet is arranged at the bottom end of the rainwater collection box, and the high-pressure nozzle is connected and installed at the outer end of the water outlet. The float valve is locked and sealed by the locking assembly and is installed at the inlet end of the water outlet. When the rainwater collection box is filled with water, the float valve can float up under the action of hydraulic buoyancy to overcome the locking force of the locking assembly, so as to release the seal of the water outlet. A reciprocating swing mechanism capable of driving the high-pressure nozzle to swing back and forth is also installed below the rainwater collection box; The reciprocating swing mechanism includes a hydraulic drive component and a reciprocating swing component. The reciprocating swing component is rotatably installed on one side of the outside of the water outlet, and the high-pressure nozzle is installed on the swing end of the reciprocating swing component. The hydraulic drive component is installed in the water outlet and is transmission-connected to the reciprocating swing component. The hydraulic drive component can drive the reciprocating swing component to swing back and forth under the action of the hydraulic pressure when water flows out of the water outlet, so as to drive the high-pressure nozzle to swing back and forth.

2. The automatic dust cleaning device according to claim 1, characterized in that: The top of the rainwater collection box is provided with a rainwater trough, and the bottom surface of the rainwater trough is provided with a water filtering hole communicated with the rainwater collection box.

3. The automatic dust cleaning device according to claim 1, characterized in that: The float valve includes a limit frame, which is fixedly installed inside the rainwater collection box and located above the water outlet. A lifting rod is slidably inserted at the top of the limit frame, and a sealing plug that can abut and seal the water outlet is fixedly installed at the bottom end of the lifting rod. A float is fixedly installed at the top of the water outlet.

4. The automatic dust cleaning device according to claim 3, characterized in that: The locking assembly includes a limit cylinder, a limit plate and an elastic pin buckle. The limit cylinder is fixedly installed at the bottom end of the limit frame and is located at the outer ring of the lifting rod. The limit plate is fixedly installed on the lifting rod. The limit plate is slidably connected to the inner ring of the limit cylinder, and the limit plate is pin-connected and locked with the limit cylinder by the elastic pin buckle.

5. The automatic dust cleaning device according to claim 4, characterized in that: The elastic pin buckle includes a pin hole and a telescopic sliding hole, the pin hole is opened on the cylinder wall of the limiting cylinder, the telescopic sliding hole is opened on the outer circumferential surface of the limiting plate, a telescopic slider is slidably installed inside the telescopic sliding hole, a pressure spring is abutted against the inner end of the telescopic slider, a pin shaft is fixedly installed on the outer end of the telescopic slider, and a cylindrical head which can be slidably inserted into the pin hole is provided on the outer end of the pin shaft.

6. The automatic dust cleaning device according to claim 4, characterized in that: The outer ring of the upper end of the lifting rod is sleeved with a return spring, one end of the return spring abuts against the bottom surface of the limit frame, and the other end of the return spring abuts against the top surface of the limit plate; The inner circle of the inlet end of the water outlet is provided with a tapered groove, and the bottom end of the sealing plug is provided with a tapered boss that matches the tapered groove.

7. The automatic dust cleaning device according to claim 1, characterized in that: The water outlet is connected to the high-pressure nozzle through a hose.

8. The automatic dust cleaning device according to claim 1, characterized in that: The reciprocating swing assembly comprises a support plate and a rotating shaft, the support plate is fixedly mounted on the outer wall of the water outlet, a swing frame is rotatably mounted on the top surface of the support plate, a guide slide groove is provided on the swing frame, a mounting plate is provided at one end of the swing frame, and the high-pressure nozzle is fixedly mounted on the mounting plate; The rotating shaft is rotatably mounted on the bracket and is located below the swing frame. A cam is fixedly mounted on the top of the rotating shaft. A guide block is rotatably mounted on the top of one end of the cam. The guide block is slidably mounted in the guide slot.

9. The automatic dust cleaning device according to claim 8, characterized in that: The hydraulic drive assembly includes a driven gear and a transmission shaft, the transmission shaft is rotatably installed at the bottom end of the water outlet, a turbine located inside the water outlet is fixedly installed at the top end of the transmission shaft, the bottom end of the transmission shaft extends to the outside of the water outlet and is fixedly installed with a transmission gear, the driven gear is fixedly installed at the bottom end of the rotating shaft and is meshed and connected with the transmission gear.

10. A method for cleaning solar photovoltaic modules, using the automatic dust cleaning device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: On rainy days, the rainwater collection box collects rainwater, so that the liquid level in the rainwater collection box gradually rises, the float valve gradually immerses in the rainwater, and the buoyancy of the float valve gradually increases. When the rainwater collection box is gradually filled with rainwater, the float valve is completely immersed under the liquid surface. At this time, the float valve floats up under the action of hydraulic buoyancy to overcome the locking force of the locking component to release the seal of the water outlet. After that, the rainwater in the rainwater collection box is sprayed through the water outlet and the high-pressure nozzle to the surface of the solar photovoltaic module installed obliquely on one side of the bracket to clean and remove dust from the solar photovoltaic module. At the same time, the hydraulic drive component drives the reciprocating swing component to swing back and forth under the hydraulic action when water flows out of the water outlet, so that the reciprocating swing component drives the high-pressure nozzle to swing back and forth above the solar photovoltaic component to increase the spray cleaning range of the high-pressure nozzle.

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