Building roof photovoltaic device and use method thereof

Abstract

The invention discloses a building roof photovoltaic device and a use method thereof, and belongs to the technical field of photovoltaic equipment. The building roof photovoltaic device comprises a photovoltaic panel and a cleaning assembly used for cleaning the photovoltaic panel, the cleaning assembly comprises a washing water pipe, a dust collection barrel, a cleaning brush and a moving table, the washing water pipe is horizontally arranged above the photovoltaic panel, a plurality of water spraying holes are evenly formed in the washing water pipe in the longitudinal direction, and the washing water pipe is communicated with a water supply source; the dust collection barrel is horizontally arranged above the photovoltaic panel and located on the front side of the flushing water pipe, a dust collection opening is formed in the side, close to the flushing water pipe, of the dust collection barrel, the dust collection barrel is further communicated with the dust collection device, and the cleaning brush is parallel to the flushing water pipe, arranged on the rear side of the water spraying direction of the water spraying holes and further connected to the photovoltaic panel in an abutting mode. The flushing water pipe, the dust collection barrel and the cleaning brush are all connected with the movable table. According to the building roof photovoltaic device and the using method thereof, when the photovoltaic panel is cleaned, raised dust can be reduced, and meanwhile the possibility that the photovoltaic panel is scratched is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic equipment, and in particular to a building roof photovoltaic device and a method of using the same. Background Art

[0002] Photovoltaic is the abbreviation of solar photovoltaic power generation system, which is a power generation system that converts the radiation energy of sunlight into electrical energy. It uses photovoltaic cells made of semiconductor materials to produce the photovoltaic effect and directly convert solar energy into electrical energy.

[0003] Photovoltaic panels are mostly installed on the roofs of outdoor buildings with no or little shelter. Photovoltaic panels are easily adhered to by dust and even bird droppings when exposed outdoors for a long time, which affects the power generation efficiency of the photovoltaic panels. Therefore, they need to be cleaned every once in a while. However, a lot of dust is easily raised during the cleaning process, and improper cleaning can easily cause scratches on the photovoltaic panels. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems in the prior art and to provide a building roof photovoltaic device and a method of using the same, which can reduce dust when cleaning the photovoltaic panels and reduce the possibility of scratches on the photovoltaic panels.

[0005] The building roof photovoltaic device provided by the present invention comprises a photovoltaic panel and a cleaning component for cleaning the photovoltaic panel, wherein the cleaning component comprises:

[0006] A flushing water pipe is horizontally arranged above the photovoltaic panel, and the flushing water pipe is evenly provided with a plurality of water spray holes along the longitudinal direction, and the water spray holes are all inclined downward and arranged forward, and the flushing water pipe is connected to a water supply source;

[0007] A dust collection cylinder is horizontally arranged above the photovoltaic panel and located in front of the flushing water pipe. A dust collection port is arranged on a side of the dust collection cylinder close to the flushing water pipe, and the dust collection cylinder is also connected to the dust collection device;

[0008] A cleaning brush is parallel to the flushing water pipe and is arranged at the rear side of the water spraying direction of the water spraying hole, and the cleaning brush also abuts against the photovoltaic panel;

[0009] The mobile platform, the flushing water pipe, the dust collection cylinder and the cleaning brush are all connected to the mobile platform so as to move with the mobile platform.

[0010] Preferably, the mobile platform includes a mobile seat symmetrically arranged on both sides of the photovoltaic panel, the flushing water pipe and the dust collection cylinder are installed on the two mobile seats by rotating around the axis of the flushing water pipe at both ends, the cleaning brushes include two, and both cleaning brushes are connected to the flushing water pipe, with the center line of each water spray hole as the center line, and are symmetrically located on both sides of each water spray hole, the flushing water pipe and the dust collection cylinder are connected to a rotating drive assembly, and the rotating drive assembly is used to drive the flushing water pipe and the dust collection cylinder to rotate around the axis of the flushing water pipe.

[0011] Preferably, two groups of connecting rods are evenly and fixedly connected along the longitudinal direction of the flushing water pipe, and each group of connecting rods is symmetrically located on both sides of the water spray holes with the center line of the center of each water spray hole as the center line. The cleaning brushes are respectively connected to the flushing water pipe through a group of connecting rods, and the cleaning brushes are hinged to the corresponding connecting rods. Tension springs are provided on the connecting rods, and the two ends of the tension springs are respectively connected to the corresponding side walls of the connecting rods and the top surface of the cleaning brushes to pull the bottom surfaces of the two cleaning brushes to rotate toward each other.

[0012] Preferably, the dust suction ports are arranged on both upper and lower sides of one side of the flushing water pipe, and the dust suction port located on the upper side is inclined upward, and the dust suction port located on the lower side is inclined downward.

[0013] Preferably, the dust collection cylinder is symmetrical in the shape of a cross, and the two ends of the dust collection cylinder are coaxially arranged on the two sides of the flushing water pipe, and the rotary drive assembly includes:

[0014] A first driving motor is fixedly connected to one of the moving bases;

[0015] A first gear, coaxially fixedly connected to the output shaft of the first driving motor;

[0016] A second gear is coaxially fixedly connected to one end of the flushing water pipe, the second gear is provided with an external gear and an internal gear, and the first gear is meshed with the external gear of the second gear;

[0017] A third gear is rotatably connected to one of the moving seats and meshes with the inner gear of the second gear;

[0018] The fourth gear is fixedly connected to one end of the dust collection cylinder, meshes with the third gear, and is coaxially arranged with the flushing water pipe.

[0019] Preferably, both ends of the dust cylinder are cylindrical, and the two ends of the dust cylinder are rotatably connected to the corresponding movable seat through the outer wall. The dust collection device includes a vacuum cleaner and a dust guide cylinder. The vacuum cleaner is arranged on the movable seat, one end of the dust guide cylinder is connected to the vacuum cleaner, and at least one end of the dust cylinder passes through the movable seat and is rotatably installed on the other end of the dust guide cylinder.

[0020] Preferably, the mobile platform also includes a connecting platform, both ends of which are fixedly connected to the mobile seat respectively, the vacuum cleaner is installed on the connecting platform, and the dust guide cylinder includes two, one end of each of the two dust guide cylinders is connected to the vacuum cleaner, and both ends of the dust guide cylinder pass through the mobile seat and are rotatably installed on the other end of a dust guide cylinder.

[0021] Preferably, the water supply source includes a water supply device and a water pipe, the water supply device is arranged on the movable seat, one end of the water pipe is connected to the water supply device, the end of the flushing water pipe away from the second gear passes through the end of the dust collector away from the second gear, and is rotatably installed with the other end of the water pipe.

[0022] Preferably, dirt collection grooves are provided on the lower sides of the front and rear ends of the photovoltaic panel, and the moving platform moves between the front and rear ends of the photovoltaic panel.

[0023] The method for using the building roof photovoltaic device described in any one of the above items comprises the following steps:

[0024] S1: starting the dust suction device so that the dust suction device starts to suction dust through the dust suction port of the dust suction cylinder;

[0025] S2: starting the water supply source, supplying water to the flushing water pipe through the water supply source, so that the flushing water pipe sprays water onto the photovoltaic panel through the water spray hole, and the direction of the water spray is toward the dust suction port close to the dust suction cylinder;

[0026] S3: Control the moving platform to move forward so that the cleaning brush can scrub the position where the water spray holes on the photovoltaic panel have been sprayed.

[0027] Compared with the prior art, the present invention has at least the following advantages:

[0028] The building roof photovoltaic device of the present invention is provided with a cleaning component for cleaning the photovoltaic panel. When the photovoltaic panel needs to be cleaned, water is supplied to the flushing water pipe through the water supply source, so that the water flushes the upper surface of the photovoltaic panel from the water spray hole, and most of the dust, bird droppings and other dirt on the photovoltaic panel can be flushed off the photovoltaic panel, and a small amount of dirt that is difficult to be flushed off can also be flushed to be relatively loose and moistened and softened. The water column flushed out of the water spray hole at a relatively high speed flushes on the photovoltaic panel and stirs the surrounding air, causing the dust on the photovoltaic panel that has not been wetted to be blown away, and the dust suction device can The floating dust can be sucked into the dust suction device through the dust suction port on the dust suction cylinder arranged on the front side of the flushing water pipe, thereby greatly reducing the dust. At the same time, the splashed sewage can also be sucked away through the dust suction cylinder to avoid the sewage splashing. In the process of flushing and vacuuming, the entire photovoltaic panel can be flushed by moving the mobile platform forward. At the same time, the photovoltaic panel flushed by water can be wiped by the cleaning brush. Since the remaining dirt has been loosened and moistened and softened by water, the photovoltaic panel can be prevented from being scratched when the cleaning brush wipes the photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the connection structure between the dust collection cylinder and the flushing water pipe of the present invention;

[0031] Figure 3 It is a schematic diagram of the connection structure of the rotary drive assembly of the present invention;

[0032] Figure 4 It is a schematic diagram of the connection structure of the dust collecting device of the present invention;

[0033] Figure 5 It is a horizontal cross-sectional structural schematic diagram of the dust collection cylinder of the present invention;

[0034] Figure 6 It is a schematic diagram of the longitudinal cross-section structure of the dust collection cylinder of the present invention;

[0035] Figure 7 It is a schematic diagram of the longitudinal cross-sectional structure of the dust collection cylinder of the present invention.

[0036] Description of reference numerals:

[0037] 1. Photovoltaic panel; 2. Flushing water pipe; 21. Water spray hole; 22. Connecting rod; 23. Tension spring; 3. Dust cylinder; 31. Dust suction port; 4. Cleaning brush; 51. Moving seat; 52. Connecting table; 61. Driving motor; 62. First gear; 63. Second gear; 64. Third gear; 65. Fourth gear; 71. Vacuum cleaner; 72. Dust guide cylinder; 81. Water supply device; 82. Water guide pipe; 9. Dirt collection tank. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1 to Figure 7 , the specific implementation of the present invention is described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific implementation. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] The building roof photovoltaic device and the use method thereof provided by the present invention include a photovoltaic panel 1 and a cleaning component for cleaning the photovoltaic panel 1, the cleaning component including a flushing water pipe 2, a dust collection cylinder 3, a cleaning brush 4 and a mobile platform, the flushing water pipe 2 is horizontally arranged above the photovoltaic panel 1, the flushing water pipe 2 is evenly provided with a plurality of water spray holes 21 along the longitudinal direction, the water spray holes 21 are all inclined downward and arranged forward, the flushing water pipe 2 is connected with a water supply source, the dust collection cylinder 3 is horizontally arranged above the photovoltaic panel 1, located at the front side of the flushing water pipe 2, the dust collection cylinder 3 is provided with a dust suction port 31 on a side close to the flushing water pipe 2, the dust collection cylinder 3 is also connected with the dust suction device, the cleaning brush 4 is parallel to the flushing water pipe 2, and is arranged at the rear side of the water spraying direction of the water spray hole 21, the cleaning brush 4 also abuts against the upper surface of the photovoltaic panel 1, the flushing water pipe 2, the dust collection cylinder 3 and the cleaning brush 4 are all connected with the mobile platform to move with the mobile platform;

[0040] Directions:

[0041] When the photovoltaic panel 1 needs to be cleaned, water is supplied to the flushing water pipe 2 through the water supply source, so that the water flushes the upper surface of the photovoltaic panel 1 from the water spray hole 21, and most of the dust, bird droppings and other dirt on the photovoltaic panel 1 can be washed off from the photovoltaic panel 1, and a small amount of dirt that is difficult to be washed off can also be washed loose and moistened and softened. The water column flushed out of the water spray hole 21 at a high speed flushes on the photovoltaic panel 1 and stirs the surrounding air, causing the dust on the photovoltaic panel 1 that has not been wetted to be blown away, and the dust suction device can be through the dust suction device arranged on the front side of the flushing water pipe. The dust suction port 31 on the cylinder 3 sucks the floating dust into the dust suction device, thereby greatly reducing dust. At the same time, the dust suction cylinder 3 can also suck out the splashed sewage to avoid sewage splashing. During the flushing and dust suction process, the mobile platform moves forward to flush the entire photovoltaic panel 1. At the same time, the photovoltaic panel 1 flushed by water can be wiped by the cleaning brush 4. Since the remaining dirt has been loosened and moistened and softened by water, when the cleaning brush 4 wipes the photovoltaic panel 1, it can also prevent the photovoltaic panel 1 from being scratched.

[0042] As a preferred embodiment, the mobile platform includes mobile seats 51 symmetrically arranged on both sides of the photovoltaic panel 1, and both are slidably connected to the roof of the building, and the sliding direction is parallel to the side of the photovoltaic panel 1 on the corresponding side. A threaded rod 54 is respectively passed through the two mobile seats 51, and each threaded rod 54 is rotatably connected to a fixed seat at one end, and the other end is fixedly connected to the output shaft of a second drive motor 53. Each second drive motor 53 is electrically connected to a power supply. The flushing water pipe 2 and the dust collection cylinder 3 are both connected to the axis of the flushing water pipe 2 at both ends. The cleaning brushes 4 are symmetrically located on the front and rear sides of each water spray hole 21, with the center line of each water spray hole 21 as the center line. The flushing water pipe 2 and the dust collection cylinder 3 are connected to the rotary drive component, and the rotary drive component is used to drive the flushing water pipe 2 and the dust collection cylinder 3 to rotate around the axis of the flushing water pipe 2. Initially, the cleaning component is located on the rear side of the photovoltaic panel 1, the water spray holes 21 are tilted downward and toward the front side, and the dust collection cylinder 3 The cleaning brush 4 located at the rear side of the flushing water pipe 2 is also in contact with the photovoltaic panel 1, while the cleaning brush 4 located at the front side of the flushing water pipe 2 is suspended in the air. The above technical solution is adopted to drive the screw rod 54 to rotate by the second driving motor 53, thereby driving the two moving seats 51 to move synchronously, and driving the flushing water pipe 2 and the dust collection cylinder 3 to move. After cleaning to the front edge of the photovoltaic panel 1, the flushing water pipe 2 and the dust collection cylinder 3 can be driven by the rotating driving component to move around the flushing water pipe 2. The axis of the pipe 2 rotates, so that the water spray hole 21 on the flushing water pipe 2 rotates to face the rear side and tilts downward, so that the dust tube 3 rotates to the rear side of the flushing water pipe 2, and the dust suction port 31 on the dust tube 3 faces the front side, still facing the flushing water pipe 2. At this time, the cleaning brush 4 located on the front side of the flushing water pipe 2 abuts against the photovoltaic panel 1, and the cleaning brush 4 located on the rear side of the flushing water pipe 2 is suspended in the air. In this way, after the cleaning component completes cleaning the photovoltaic panel 1 from the back to the front, the cleaning component can conveniently clean the photovoltaic panel 1 from the front to the back again.

[0043] As a preferred embodiment, two groups of connecting rods 22 are evenly and fixedly connected along the longitudinal direction on the flushing water pipe 2. Each group of connecting rods 22 is symmetrically located on both sides of each water spray hole 21 with the center line of each water spray hole 21 as the center line. The cleaning brushes 4 are respectively connected to the flushing water pipe 2 through a group of connecting rods 22. Specifically, the angle between the two groups of connecting rods 22 is 90°. The cleaning brushes 4 are hinged to the corresponding connecting rods 22. The connecting rods 22 are provided with tension springs 23. The two ends of the tension springs 23 are respectively connected to the corresponding side walls of the connecting rods 22 and the top surfaces of the cleaning brushes 4 to pull the bottom surfaces of the two cleaning brushes 4 to rotate toward each other. Specifically, the cleaning brushes 4 are strip-shaped and parallel to the flushing water pipe 2. 4 includes a fixing plate and a brush body. The fixing plate can be made of hard plastic or alloy. The fixing plate is hinged to the corresponding connecting rod 22. The brush body can be made of sponge or absorbent cotton and is arranged on the bottom surface of the fixing plate. The two ends of the tension spring 23 are respectively connected to the corresponding side walls of the connecting rod 22 and the top surface of the fixing plate and are fixedly connected. The cleaning brush 4 is hinged to the corresponding connecting rod 22 so that the cleaning brush 4 can rotate around the connecting rod 22. The above technical solution can facilitate the bottom surface of the cleaning brush 4 to abut against the photovoltaic panel 1 more conveniently, avoiding the cleaning brush 4 from crushing the photovoltaic panel 1. At the same time, the pulling of the tension spring 23 on the cleaning brush 4 can also make the side of the bottom surface of the cleaning brush 4 away from each other pressed against the photovoltaic panel 1, thereby improving the cleaning effect.

[0044] As a preferred embodiment, the dust suction port 31 is provided on both the upper and lower sides of one side of the flushing water pipe 2, and the dust suction port 31 on the upper side is inclined upward, and the dust suction port 31 on the lower side is inclined downward. By adopting the above technical solution, no matter the cleaning component cleans the photovoltaic panel 1 from back to front or from front to back, the dust suction port 31 can suck away dust and sewage from low places and those splashed to higher places, thereby improving the cleaning effect and avoiding dust.

[0045] As a preferred embodiment, the dust suction cylinder 3 is in a symmetric U-shape. The two ends of the dust suction cylinder 3 are coaxially arranged on both sides of the flushing water pipe 2. The rotation driving assembly includes a first driving motor 61, a first gear 62, a second gear 63, a third gear 64 and a fourth gear 65. The first driving motor 61 is fixedly connected to one of the moving seats 51. The first gear 62 is coaxially and fixedly connected to the output shaft of the first driving motor 61. The second gear 63 is coaxially and fixedly connected to one end of the flushing water pipe 2. The second gear 63 is provided with an external gear and an internal gear. The first gear 62 meshes with the external gear of the second gear 63. The third gear 64 is rotatably connected to one of the moving seats 51 and meshes with the internal gear of the second gear 63. The fourth gear 65 is fixedly connected to one end of the dust suction cylinder 3. The fourth gear 65 meshes with the third gear 64 and is coaxially arranged with the flushing water pipe 2. With the above technical solution, the first driving motor 61 can drive the first gear 62 to rotate, and drive the second gear 63 to rotate through the external gear of the second gear 63. The internal gear of the second gear 63 can drive the third gear 64 to rotate in the same direction. The third gear 64 can drive the fourth gear 65 to rotate in the opposite direction. Thus, when the second gear 63 rotates clockwise, the fourth gear 65 rotates counterclockwise. When the second gear 63 rotates counterclockwise, the fourth gear 6 rotates clockwise. The linear velocities of the second gear 63, the third gear 64 and the fourth gear 65 are the same. And since the diameter of the second gear 63 is larger than that of the fourth gear 65, therefore, it can be realized that the second gear 63 rotates 90°, and the fourth gear 65 rotates 180°. In this way, the second gear 63 can drive the flushing water pipe 2 to rotate 90°, change the cleaning brush 4 abutting against the photovoltaic panel 1, and at the same time rotate the dust suction cylinder 3 from the front side of the flushing water pipe 2 to the rear side of the flushing water pipe 2, or from the rear side of the flushing water pipe 2 to the front side of the flushing water pipe 2.

[0046] As a preferred embodiment, the two ends of the dust suction cylinder 3 are cylindrical. The two ends of the dust suction cylinder 3 are rotationally connected to the corresponding moving seats 51 through the outer walls. The dust suction device includes a dust collector 71 and a dust guide cylinder 72. The dust collector 71 is arranged on the moving seat 51. One end of the dust guide cylinder 72 is connected to the dust collector 71. At least one end of the dust suction cylinder 3 penetrates through the moving seat 51 and is rotatably installed at the other end of the dust guide cylinder 72. With the above technical solution, it is convenient to connect the dust guide cylinder 72 with the dust suction cylinder 3, and it is convenient for the dust collector 7 to suck dust through the dust guide cylinder 72 and the dust suction cylinder 3.

[0047] As a preferred embodiment, the mobile platform also includes a connecting platform 52, and the two ends of the connecting platform 52 are respectively fixedly connected to the mobile seat 51, the vacuum cleaner 71 is installed on the connecting platform 52, and the dust guide cylinder 72 includes two, and one end of the two dust guide cylinders 72 is connected to the vacuum cleaner 71. Both ends of the dust cylinder 3 pass through the mobile seat 51 and are rotatably installed on the other end of a dust guide cylinder 72. The above technical solution can enable the dust suction port 1 to have a good dust suction effect on both sides of the photovoltaic panel 1.

[0048] As a preferred embodiment, the water supply source includes a water supply device 81 and a water pipe 82. The water supply device 81 is arranged on the movable seat 51, and one end of the water pipe 82 is connected to the water supply device 81. The end of the flushing water pipe 2 away from the second gear 63 passes through the end of the dust collection cylinder 3 away from the second gear 63, and is rotatably installed with the other end of the water pipe 82. The above technical solution can facilitate the connection between the water supply device 81 and the flushing water pipe 2 through the water pipe 82, and the rotation of the flushing water pipe 2 does not affect the sealing of the connection between the water pipe 82 and the flushing water pipe 2.

[0049] As a preferred embodiment, dirt collection grooves 9 are provided on the lower sides of the front and rear ends of the photovoltaic panel 1, and the mobile platform moves between the front and rear ends of the photovoltaic panel 1. By adopting the above technical solution, the dirt wiped off by the cleaning brush 4 can be collected centrally through the dirt collection grooves 9 to facilitate subsequent processing.

[0050] The method for using the building roof photovoltaic device described in any one of the above items comprises the following steps:

[0051] S1: starting the dust suction device so that the dust suction device starts to suction dust through the dust suction port 31 of the dust suction cylinder 3;

[0052] S2: starting the water supply source, supplying water to the flushing water pipe 2 through the water supply source, so that the flushing water pipe 2 sprays water onto the photovoltaic panel 1 through the water spray hole 21, and the direction of the water spray is toward the dust suction port 31 close to the dust suction cylinder 3;

[0053] S3: Control the moving platform to move forward, so that the cleaning brush 4 scrubs the position where the water spray hole 21 on the photovoltaic panel 1 has been sprayed;

[0054] By adopting the above technical solution, dust can be reduced to the greatest extent when cleaning the photovoltaic panel 1, and the possibility of scratching the photovoltaic panel 1 can be reduced.

[0055] In the description of the present invention, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0056] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A photovoltaic device for a building roof, comprising a photovoltaic panel (1) and a cleaning assembly for cleaning the photovoltaic panel (1), characterized in that: The cleaning component comprises: A flushing water pipe (2) is horizontally arranged above the photovoltaic panel (1), the flushing water pipe (2) is evenly provided with a plurality of water spray holes (21) along the longitudinal direction, the water spray holes (21) are all inclined downward and arranged forward, and the flushing water pipe (2) is connected to a water supply source; A dust collection cylinder (3) is horizontally arranged above the photovoltaic panel (1) and located in front of the flushing water pipe (2). A dust collection port (31) is arranged on a side of the dust collection cylinder (3) close to the flushing water pipe (2). The dust collection cylinder (3) is also connected to a dust collection device. A cleaning brush (4) is parallel to the flushing water pipe (2) and is arranged on the rear side of the water spraying direction of the water spraying hole (21), and the cleaning brush (4) also abuts against the photovoltaic panel (1); The mobile platform, the flushing water pipe (2), the dust collection cylinder (3) and the cleaning brush (4) are all connected to the mobile platform so as to move with the mobile platform.

2. The building roof photovoltaic device according to claim 1, characterized in that: The mobile platform comprises a mobile seat (51) symmetrically arranged on both sides of the photovoltaic panel (1); the flushing water pipe (2) and the dust collection cylinder (3) are both mounted on the two mobile seats (51) by rotating around the axis of the flushing water pipe (2) at both ends; the cleaning brushes (4) comprise two, and both cleaning brushes (4) are connected to the flushing water pipe (2), with the center line of each water spray hole (21) as the center line, and are symmetrically located on both sides of each water spray hole (21); the flushing water pipe (2) and the dust collection cylinder (3) are both connected to a rotary drive component, and the rotary drive component is used to drive the flushing water pipe (2) and the dust collection cylinder (3) to rotate around the axis of the flushing water pipe (2).

3. The building roof photovoltaic device according to claim 2, characterized in that: Two groups of connecting rods (22) are evenly and fixedly connected to the flushing water pipe (2) along the longitudinal direction. Each group of connecting rods (22) is symmetrically located on both sides of each water spray hole (21) with the center line of each water spray hole (21) as the center line. The cleaning brushes (4) are connected to the flushing water pipe (2) through a group of connecting rods (22). The cleaning brushes (4) are hinged to the corresponding connecting rods (22). The connecting rods (22) are provided with tension springs (23). The two ends of the tension springs (23) are respectively connected to the side walls of the corresponding connecting rods (22) and the top surfaces of the cleaning brushes (4) to pull the bottom surfaces of the two cleaning brushes (4) to rotate toward the side close to each other.

4. The building roof photovoltaic device according to claim 1, characterized in that: The dust suction ports (31) are arranged on both upper and lower sides of one side of the flushing water pipe (2), and the dust suction port (31) located on the upper side is inclined upward, while the dust suction port (31) located on the lower side is inclined downward.

5. The building roof photovoltaic device according to claim 2, characterized in that: The dust suction cylinder (3) is symmetrical in the shape of a Chinese character "X", and the two ends of the dust suction cylinder (3) are coaxially arranged on the two sides of the flushing water pipe (2). The rotary drive assembly comprises: A first driving motor (61) is fixedly connected to one of the moving seats (51); A first gear (62) coaxially and fixedly connected to an output shaft of the first driving motor (61); A second gear (63) is coaxially fixedly connected to one end of the flushing water pipe (2), the second gear (63) is provided with an external gear and an internal gear, and the first gear (62) is meshed with the external gear of the second gear (63); A third gear (64) is rotatably connected to the movable seat (51) and meshes with the inner gear of the second gear (63); The fourth gear (65) is fixedly connected to one end of the dust collecting cylinder (3). The fourth gear (65) is meshed with the third gear (64) and is coaxially arranged with the flushing water pipe (2).

6. The building roof photovoltaic device according to claim 5, characterized in that: The two ends of the dust collection cylinder (3) are cylindrical, and the two ends of the dust collection cylinder (3) are rotatably connected to the corresponding movable seat (51) through the outer wall. The dust collection device comprises a dust collector (71) and a dust guide cylinder (72). The dust collector (71) is arranged on the movable seat (51), and one end of the dust guide cylinder (72) is connected to the dust collector (71). At least one end of the dust collection cylinder (3) passes through the movable seat (51) and is rotatably mounted on the other end of the dust guide cylinder (72).

7. The building roof photovoltaic device according to claim 6, characterized in that: The mobile platform also includes a connecting platform (52), the two ends of which are respectively fixedly connected to one of the mobile seats (51), the vacuum cleaner (71) is mounted on the connecting platform (52), the dust guide cylinder (72) includes two, one end of each of the two dust guide cylinders (72) is connected to the vacuum cleaner (71), and the two ends of the dust cylinder (3) pass through the mobile seat (51) and are rotatably mounted on the other end of a dust guide cylinder (72).

8. The building roof photovoltaic device according to claim 5, characterized in that: The water supply source comprises a water supply device (81) and a water guide pipe (82). The water supply device (81) is arranged on the movable seat (51). One end of the water guide pipe (82) is connected to the water supply device (81). One end of the flushing water pipe (2) away from the second gear (63) passes through one end of the dust collection cylinder (3) away from the second gear (63) and is rotatably mounted with the other end of the water guide pipe (82).

9. The building roof photovoltaic device according to claim 1, characterized in that: Dirt collection grooves (9) are provided on the lower sides of the front and rear ends of the photovoltaic panel (1), and the moving platform moves between the front and rear ends of the photovoltaic panel (1).

10. The method for using the building roof photovoltaic device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: starting the dust suction device so that the dust suction device starts to suction dust through the dust suction port (31) of the dust suction cylinder (3); S2: starting the water supply source, supplying water to the flushing water pipe (2) through the water supply source, so that the flushing water pipe (2) sprays water onto the photovoltaic panel (1) through the water spray hole (21), and the direction of the water spray is toward the dust suction port (31) close to the dust suction cylinder (3); S3: Control the moving platform to move forward, so that the cleaning brush (4) scrubs the position on the photovoltaic panel (1) where the water spray hole (21) has sprayed.

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