Self-cleaning structure of fan blade

Abstract

The invention belongs to the technical field of wind driven generators, and particularly relates to a fan blade self-cleaning structure which comprises a tower, a cabin is rotatably mounted at the top of the tower, a hub is rotatably mounted on the left side of the cabin, and fan blades are fixedly mounted on the hub. When the fan blades rotate to the lower portion, the reciprocating washing assembly is located in the center of the right side of the fan blades, so that the upper portion and the lower portion of the fan blades are washed in a reciprocating mode through the reciprocating washing assembly, and in the process that the fan blades gradually rotate to the lower rear portion from the lower front portion, the rotating assembly is installed on the mounting table; the first fixing plate is rotated, the spray gun is driven to conduct multi-angle flushing on the fan blades, compressed air, cleaning liquid and clear water are switched through the gas-liquid switching assembly in the flushing process, leaves and dust are blown off from the fan blades firstly, and then the fan blades are flushed through the cleaning liquid and the clear water.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine generators, and in particular to a self-cleaning structure of a wind turbine blade. Background Art

[0002] With the rapid development of renewable energy, wind power generation, as an important source of clean energy, accounts for an increasing proportion in the global energy structure. The wind turbine blades in wind farms play a key role. They convert wind energy into mechanical energy and drive the generator to generate electricity. The performance of the blades directly affects the wind energy conversion efficiency and power generation efficiency, and is the basis for obtaining a higher wind energy utilization coefficient and economic benefits. During the operation of the wind turbine, the wind turbine blades are exposed to the outdoor environment for a long time, and are prone to accumulate impurities such as dust, dirt, bird droppings, and insect carcasses. These dirt will increase the roughness of the blade surface, increase the resistance of the airflow through the blade, and lead to a decrease in wind energy conversion efficiency. If the blade surface is not cleaned, after long-term exposure to wind, sun, rain, and erosion by chemicals in the air, the surface will corrode, which will not only affect the appearance, but also reduce the structural strength of the blade, resulting in a shortened blade life.

[0003] Traditional wind turbine blade cleaning usually requires manual work on the wind turbine tower and the use of high-pressure water guns or brushes. This involves high-altitude work, which poses a greater safety risk and has high labor costs. Since wind turbine blades are usually long and numerous, manual cleaning requires a lot of time and human resources, and the cleaning cycle is long, which increases the downtime of the wind turbine and affects the power generation efficiency. For this reason, we propose a self-cleaning structure for wind turbine blades. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a self-cleaning structure for fan blades. When the fan blades rotate downward, the reciprocating flushing assembly is located in the middle position on the right side of the fan blades, thereby achieving reciprocating cleaning of the upper and lower parts of the fan blades through the reciprocating flushing assembly. In the process of the fan blades gradually rotating from the front lower part to the rear lower part, the rotating assembly is used to rotate the fixed plate, driving the spray gun to flush the fan blades at multiple angles, thereby solving the background problem.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a self-cleaning structure for fan blades, comprising a tower, a cabin rotatably mounted on the top of the tower, a hub rotatably mounted on the left side of the cabin, a fan blade is fixedly mounted on the hub, a mounting plate rotatably mounted on the outer surface of the tower, a water tank is fixedly mounted on the top right side of the mounting plate, a clean water chamber and a cleaning liquid chamber are respectively provided on the front and rear sides of the interior of the water tank, an air compressor and a delivery pump are fixedly mounted on the middle of the top side of the mounting plate, a mounting platform is fixedly mounted on the top left side of the mounting plate, a fixed plate 1 is provided on the top side of the mounting platform, a reciprocating flushing assembly is installed on the fixed plate 1, a rotating assembly for rotating the fixed plate 1 is installed on the mounting platform, a gas-liquid switching assembly is also installed on the top of the mounting plate, and a water collection assembly is installed between the cabin and the clean water chamber.

[0006] Preferably, the reciprocating flushing assembly includes a rotating rod, which is rotatably mounted on the top of a fixed plate, a rotating plate is fixedly sleeved on the left end of the rotating rod, a spray gun is fixedly mounted on the left side of the rotating plate, bevel gears are fixedly sleeved on the left and right sides of the rotating rod, a driving motor is also fixedly mounted on the front side of the top of the fixed plate, a semi-bevel gear is fixedly connected to the output shaft end of the driving motor, and the bevel gear is meshed with the semi-bevel gear.

[0007] Preferably, the rotating assembly includes a second drive motor, which is fixedly mounted on the bottom side of the mounting platform, an output shaft end of the second drive motor passes through the mounting platform and is fixedly connected to a gear, a fixed ring is fixedly connected to the middle of the top side of the mounting platform, a gear ring is rotatably mounted on the fixed ring, and a fixed plate is fixedly connected to the top of the gear ring, and the gear ring is meshed with the gear.

[0008] Preferably, the gas-liquid switching component includes solenoid valve 1 and solenoid valve 2, and the left bottom of the clean water chamber and the cleaning liquid chamber are respectively provided with water outlet 1 and water outlet 2, and the water outlet 1 and water outlet 2 are fixedly connected with solenoid valve 3, and the input end of the delivery pump is fixedly connected with a water pipe, and the output ends of the two groups of solenoid valves 3 are fixedly connected to the water pipe through pipelines, the solenoid valve 1 is fixedly connected to the output end of the delivery pump through a pipeline, the solenoid valve 2 is fixedly connected to the output end of the air compressor through a pipeline, the output end of the solenoid valve 2 is fixedly connected to the delivery main pipe, and the output end of the solenoid valve 1 is fixedly connected to the delivery main pipe through a pipeline.

[0009] Preferably, the water collection assembly includes a rain collecting box, which is fixedly installed on the right bottom of the cabin, and a plurality of filter holes are opened through the top of the rain collecting box. A sieve plate is fixedly installed on the right top of the cabin, and the bottom of the rain collecting box is fixedly connected to a connecting pipe 2, and the output end of the connecting pipe 2 is fixedly connected to the top of the clean water chamber.

[0010] Preferably, a rotary joint is installed in the middle of the bottom side of the fixed plate 1, the output end of the conveying main pipe is fixedly connected to the bottom end of the rotary joint, the top end of the rotary joint is fixedly connected to a connecting pipe 1, and the output end of the connecting pipe 1 is fixedly connected to the input end of the spray gun.

[0011] Preferably, liquid level gauges are provided inside the clean water chamber and the cleaning liquid chamber.

[0012] Preferably, a camera is installed on the top of the cabin.

[0013] Preferably, a water inlet is provided at the top of the rear side of the cleaning liquid chamber.

[0014] The present invention provides a self-cleaning structure for fan blades. Compared with the prior art, it has the following beneficial effects:

[0015] 1. A self-cleaning structure for fan blades, wherein a reciprocating flushing assembly is installed on a fixed plate 1. When the fan blades rotate downward, the reciprocating flushing assembly is located in the middle of the right side of the fan blades, thereby realizing reciprocating cleaning of the upper and lower parts of the fan blades through the reciprocating flushing assembly. In the process of the fan blades gradually rotating from the front lower part to the rear lower part, a rotating assembly is installed on a mounting table to rotate the fixed plate 1, thereby driving a spray gun to flush the fan blades at multiple angles. During the flushing process, compressed air, cleaning fluid and clean water are switched through a gas-liquid switching assembly to first blow off leaves and dust from the fan blades, and then flush them with cleaning fluid and clean water.

[0016] 2. The self-cleaning structure of the fan blades has a water collection component installed between the cabin and the clean water chamber. The water collection component collects rainwater to replenish the clean water chamber with clean water, thereby improving the utilization rate of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front view structure of the main body of the present invention;

[0018] Figure 2 It is a schematic diagram of the rear view structure of the main body of the present invention;

[0019] Figure 3 It is a schematic diagram of the top structure of the mounting plate of the present invention;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the mounting platform of the present invention;

[0021] Figure 5 It is a schematic diagram of the connection structure of the bevel gear and the semi-bevel gear of the present invention;

[0022] Figure 6 It is a schematic diagram of the internal structure of the water tank of the present invention;

[0023] Figure 7For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 8 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0025] In the figure: 1, tower; 2, cabin; 3, hub; 4, fan blades; 5, mounting plate; 6, camera; 7, water tank; 8, air compressor; 9, delivery pump; 10, water pipe; 11, solenoid valve 1; 12, solenoid valve 2; 13, solenoid valve 3; 14, delivery main pipe; 15, mounting table; 16, fixing ring; 17, fixing plate 1; 18, rotating rod; 19, rotating plate; 20, spray gun; 21, rotating joint; 22, connecting pipe 1; 23, bevel gear; 24, semi-bevel gear; 25, clean water chamber; 26, cleaning liquid chamber; 27, water inlet; 28, liquid level meter; 29, water outlet 1; 30, water outlet 2; 31, drive motor 1; 32, gear; 33, drive motor 2; 34, gear ring; 35, rain collecting box; 36, connecting pipe 2; 37, sieve plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 8 A self-cleaning structure for fan blades comprises a tower 1, a cabin 2 is rotatably mounted on the top of the tower 1, a hub 3 is rotatably mounted on the left side of the cabin 2, a fan blade 4 is fixedly mounted on the hub 3, a mounting plate 5 is rotatably mounted on the outer surface of the tower 1 through an electric rotating table, a water tank 7 is fixedly mounted on the top right side of the mounting plate 5, a clean water chamber 25 and a cleaning liquid chamber 26 are respectively arranged on the front and rear sides of the water tank 7, an air compressor 8 and a delivery pump 9 are fixedly mounted on the middle part of the top side of the mounting plate 5, a mounting platform 15 is fixedly mounted on the top left side of the mounting plate 5, a fixed plate 17 is arranged on the top side of the mounting platform 15, a reciprocating flushing assembly is mounted on the fixed plate 17, a rotating assembly for rotating the fixed plate 17 is mounted on the mounting platform 15, a gas-liquid switching assembly is also mounted on the top of the mounting plate 5, and a water collecting assembly is installed between the cabin 2 and the clean water chamber 25.

[0028] The self-cleaning structure of the wind turbine blades is characterized in that a mounting plate 5 is rotatably mounted on the outer surface of the tower 1. When the cabin 2 is rotated and adjusted according to the wind direction, it is connected to the yaw system in the electric fan through the electric rotating table, so that the electric rotating table can obtain the yaw data of the yaw system of the wind turbine, and finally the mounting plate 5 is synchronously rotated with the cabin 2. A mounting table 15 is fixedly mounted on the left side of the top of the mounting plate 5, and a fixing plate 17 is arranged on the top side of the mounting table 15. A reciprocating flushing component is installed on the fixing plate 17. When the fan blade 4 rotates to the bottom, the reciprocating flushing component is located in the middle of the right side of the fan blade 4 to clean the upper and lower sides of the fan blade 4. When the fan blade 4 gradually rotates from the front bottom to the top, the reciprocating flushing component is located in the middle of the right side of the fan blade 4 to clean the upper and lower sides of the fan blade 4. In the process of reaching the rear lower part, a rotating component is installed on the mounting platform 15 to rotate the fixed plate 17, so that the fan blades 4 are washed at multiple angles. During the washing process, compressed air, cleaning fluid and clean water are switched through the gas-liquid switching component installed on the top of the mounting plate 5. Leaves and dust are first blown off the fan blades 4, and then the fan blades 4 are washed with cleaning fluid and clean water. The compressed air is provided by the air compressor 8, and the cleaning fluid and clean water are provided by the clean water chamber 25 and the cleaning liquid chamber 26 respectively arranged on the front and rear sides of the water tank 7, and are transported by the delivery pump 9. A water collecting component is installed between the cabin 2 and the clean water chamber 25, and rainwater is collected by the water collecting component to replenish the clean water chamber 25 with clean water, thereby improving the utilization rate of water resources.

[0029] The reciprocating flushing assembly includes a rotating rod 18, which is rotatably mounted on the top of a fixed plate 17. A rotating plate 19 is fixedly sleeved on the left end of the rotating rod 18, a spray gun 20 is fixedly mounted on the left side of the rotating plate 19, bevel gears 23 are fixedly sleeved on the left and right sides of the rotating rod 18, a driving motor 31 is also fixedly mounted on the front side of the top of the fixed plate 17, a semi-bevel gear 24 is fixedly connected to the output shaft end of the driving motor 31, and the bevel gear 23 is meshed with the semi-bevel gear 24.

[0030] When the reciprocating flushing assembly is in use, the driving motor 31 is started, and the semi-bevel gear 24 is rotated by the driving motor 31. During the rotation of the semi-bevel gear 24, it intermittently rotates with the two sets of bevel gears 23 respectively. Since the two sets of bevel gears 23 are mirror-imaged, the two sets of bevel gears 23 rotate in opposite directions when they are meshed and rotated by the semi-bevel gear 24. Therefore, the rotating rod 18 is intermittently driven to reciprocate forward and reverse within a certain angle, thereby driving the rotating plate 19 to reciprocate forward and reverse within a certain angle. When the fan blade 4 rotates to the bottom, it drives the spray gun 20 to reciprocate and flush the upper and lower sides of the fan blade 4 back and forth.

[0031] The rotating assembly includes a driving motor 2 33, which is fixedly mounted on the bottom side of the mounting platform 15. The output shaft end of the driving motor 2 33 passes through the mounting platform 15 and is fixedly connected to a gear 32. A fixing ring 16 is fixedly connected to the middle of the top side of the mounting platform 15. A gear ring 34 is rotatably mounted on the fixing ring 16. A fixing plate 17 is fixedly connected to the top of the gear ring 34, and the gear ring 34 meshes with the gear 32.

[0032] When the rotating assembly is used, the driving motor 2 33 is started, and the gear 32 is rotated by the driving motor 2 33, thereby driving the gear ring 34 meshing therewith to rotate on the fixing ring 16, thereby driving the fixing plate 1 17 to rotate.

[0033] The gas-liquid switching component includes a solenoid valve 11 and a solenoid valve 2 12. The left bottom of the clean water chamber 25 and the cleaning liquid chamber 26 are respectively provided with a water outlet 1 29 and a water outlet 2 30. The water outlet 1 29 and the water outlet 2 30 are fixedly connected with a solenoid valve 3 13. The input end of the delivery pump 9 is fixedly connected with a water pipe 10. The output ends of the two groups of solenoid valves 3 13 are fixedly connected to the water pipe 10 through pipelines. The solenoid valve 11 is fixedly connected to the output end of the delivery pump 9 through a pipeline. The solenoid valve 2 12 is fixedly connected to the output end of the air compressor 8 through a pipeline. The output end of the solenoid valve 2 12 is fixedly connected to the delivery main pipe 14. The output end of the solenoid valve 11 is fixedly connected to the delivery main pipe 14 through a pipeline.

[0034] When the gas-liquid switching component is in use, the water outlet 1 29 and the water outlet 2 30 respectively opened at the bottom of the left side of the clean water chamber 25 and the cleaning liquid chamber 26 are switched through two sets of solenoid valves 3 13, and the delivery pump 9 delivers the clean water and cleaning liquid in the clean water chamber 25 and the cleaning liquid chamber 26 through the water pipe 10, and the air outlet switch of the air compressor 8 is controlled by the solenoid valve 2 12, and then the compressed air is delivered through the delivery main pipe 14, and the clean water and cleaning liquid output by the delivery pump 9 are also delivered to the delivery main pipe 14 through the pipeline for delivery. In order to prevent the compressed air from damaging the delivery pump 9, the solenoid valve 11 is used to switch between the delivery pump 9 and the delivery main pipe 14, so as to realize the switching of the delivery of compressed air, cleaning liquid and clean water in the delivery main pipe 14.

[0035] The water collecting assembly includes a rain collecting box 35, which is fixedly installed at the right bottom of the cabin 2. A plurality of filter holes are opened through the top of the rain collecting box 35. A sieve plate 37 is fixedly installed at the right top of the cabin 2. The bottom of the rain collecting box 35 is fixedly connected to a connecting pipe 2 36, and the output end of the connecting pipe 2 36 is fixedly connected to the top of the clean water chamber 25.

[0036] When the water collecting assembly is in use, large solid waste in the rainwater is screened out through the sieve plate 37, and then the rainwater is filtered through a plurality of filter holes opened through the top of the rain collecting box 35 and enters the rain collecting box 35, and enters the clean water chamber 25 for collection from the connecting pipe 2 36 fixedly connected to the bottom of the rain collecting box 35.

[0037] A rotary joint 21 is installed in the middle of the bottom side of the fixed plate 17, the output end of the conveying main pipe 14 is fixedly connected to the bottom end of the rotary joint 21, the top of the rotary joint 21 is fixedly connected to a connecting pipe 22, and the output end of the connecting pipe 22 is fixedly connected to the input end of the spray gun 20.

[0038] The compressed air, cleaning liquid and clean water transported by the transport main pipe 14 are transported to the connecting pipe 22 through the rotating joint 21, and then transported to the spray gun 20 for spraying. The rotating joint 21 ensures that the rotation of the fixed plate 17 does not affect the transport of the connecting pipe 22.

[0039] Liquid level meters 28 are provided inside the clean water chamber 25 and the cleaning liquid chamber 26 to measure the liquid levels in the clean water chamber 25 and the cleaning liquid chamber 26 and remind the staff to add cleaning liquid in time.

[0040] A camera 6 is installed on the top of the nacelle 2 to monitor the outer surface of the wind turbine blades 4 .

[0041] A water inlet 27 is provided at the top of the rear side of the cleaning liquid chamber 26 , and cleaning liquid is added into the cleaning liquid chamber 26 through the water inlet 27 .

[0042] Working principle: The self-cleaning structure of the fan blades has a mounting plate 5 rotatably mounted on the outer surface of the tower 1. When the cabin 2 is rotated and adjusted according to the wind direction, the mounting plate 5 rotates synchronously with the cabin 2. A mounting platform 15 is fixedly mounted on the left side of the top of the mounting plate 5. A fixing plate 17 is arranged on the top side of the mounting platform 15. The semi-bevel gear 24 is rotated by the driving motor 31. During the rotation of the semi-bevel gear 24, it rotates intermittently with the two sets of bevel gears 23 respectively. Since the two sets of bevel gears 23 are arranged in mirror images, the two sets of bevel gears 23 are meshed and rotated by the semi-bevel gear 24. When the fan blade 4 rotates to the lower side, the spray gun 20 is driven to wash the upper and lower sides of the fan blade 4 back and forth. In the process of the fan blade 4 gradually rotating from the front lower side to the rear lower side, the gear 32 is rotated by the driving motor 2 33, thereby driving the gear ring 34 meshing therewith to rotate on the fixed ring 16, thereby driving the fixed plate 17 to rotate, and driving the spray gun 20 to wash the fan blade 4 at multiple angles.

[0043] During the flushing process of the fan blades 4, the water outlet 1 29 and the water outlet 2 30 respectively opened at the bottom of the left side of the clean water chamber 25 and the cleaning liquid chamber 26 are switched by two sets of solenoid valves 3 13, and the delivery pump 9 delivers the clean water and cleaning liquid in the clean water chamber 25 and the cleaning liquid chamber 26 through the water delivery pipe 10, and the air outlet switch of the air compressor 8 is controlled by the solenoid valve 2 12, and then the compressed air is delivered through the delivery main pipe 14, and the clean water and cleaning liquid output by the delivery pump 9 are also delivered to the delivery main pipe 14 through the pipeline for delivery. In order to avoid the compressed air damaging the delivery The delivery pump 9 switches between the delivery pump 9 and the delivery main pipe 14 through the solenoid valve 11, so as to switch the delivery of compressed air, cleaning liquid and clean water in the delivery main pipe 14. The compressed air, cleaning liquid and clean water delivered by the delivery main pipe 14 are delivered to the connecting pipe 22 through the rotating joint 21, and then delivered to the spray gun 20 for spraying. The rotating joint 21 ensures that the rotation of the fixed plate 17 does not affect the delivery of the connecting pipe 22, so that when the fan blades 4 are cleaned, leaves and dust are blown off first, and then rinsed with cleaning liquid and clean water;

[0044] When the self-cleaning structure replenishes clean water in the clean water chamber 25 during rain, the screen plate 37 is used to filter out large solid waste in the rainwater. Then, the rainwater is filtered through a plurality of filter holes provided through the top of the rainwater receiving box 35 and enters the rainwater receiving box 35. The rainwater enters the clean water chamber 25 and is collected from the connecting pipe 2 36 fixedly connected to the bottom of the rainwater receiving box 35, thereby improving the utilization rate of water resources.

[0045] 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 "include", "comprise" 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.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning structure for a fan blade, comprising a tower (1), characterized in that: A cabin (2) is rotatably mounted on the top of the tower (1), a wheel hub (3) is rotatably mounted on the left side of the cabin (2), and a fan blade (4) is fixedly mounted on the wheel hub (3), a mounting plate (5) is rotatably mounted on the outer surface of the tower (1), a water tank (7) is fixedly mounted on the right side of the top of the mounting plate (5), a clean water chamber (25) and a cleaning liquid chamber (26) are respectively arranged on the front and rear sides of the interior of the water tank (7), and an air chamber (25) is fixedly mounted in the middle of the top side of the mounting plate (5). An air compressor (8) and a delivery pump (9) are provided. A mounting platform (15) is fixedly installed on the left side of the top of the mounting plate (5). A fixing plate (17) is arranged on the top side of the mounting platform (15). A reciprocating flushing component is installed on the fixing plate (17). A rotating component for rotating the fixing plate (17) is installed on the mounting platform (15). A gas-liquid switching component is also installed on the top of the mounting plate (5). A water collecting component is installed between the cabin (2) and the clean water chamber (25).

2. The self-cleaning structure of a fan blade according to claim 1, characterized in that: The reciprocating flushing assembly comprises a rotating rod (18), the rotating rod (18) being rotatably mounted on the top of a fixed plate (17), the left end of the rotating rod (18) being fixedly sleeved with a rotating plate (19), the left side of the rotating plate (19) being fixedly mounted with a spray gun (20), the left and right sides of the rotating rod (18) being fixedly sleeved with a bevel gear (23), the top front side of the fixed plate (17) being also fixedly mounted with a driving motor (31), the output shaft end of the driving motor (31) being fixedly connected with a semi-bevel gear (24), the bevel gear (23) being meshed with the semi-bevel gear (24).

3. The self-cleaning structure of a fan blade according to claim 1, characterized in that: The rotating assembly comprises a second driving motor (33), the second driving motor (33) being fixedly mounted on the bottom side of the mounting platform (15), the output shaft end of the second driving motor (33) passing through the mounting platform (15) and being fixedly connected to a gear (32), a fixing ring (16) being fixedly connected to the middle part of the top side of the mounting platform (15), a gear ring (34) being rotatably mounted on the fixing ring (16), the first fixing plate (17) being fixedly connected to the top of the gear ring (34), and the gear ring (34) being meshed with the gear (32).

4. The self-cleaning structure of a fan blade according to claim 2, characterized in that: The gas-liquid switching component comprises a solenoid valve 1 (11) and a solenoid valve 2 (12). The clean water chamber (25) and the cleaning liquid chamber (26) are respectively provided with a water outlet 1 (29) and a water outlet 2 (30) at the bottom of the left side. The water outlet 1 (29) and the water outlet 2 (30) are both fixedly connected to a solenoid valve 3 (13). The input end of the delivery pump (9) is fixedly connected to a water delivery pipe (10). The output ends of the two groups of solenoid valves 3 (13) are both fixedly connected to the water delivery pipe (10) through pipelines. The solenoid valve 1 (11) is fixedly connected to the output end of the delivery pump (9) through a pipeline. The solenoid valve 2 (12) is fixedly connected to the output end of the air compressor (8) through a pipeline. The output end of the solenoid valve 2 (12) is fixedly connected to a delivery main pipe (14). The output end of the solenoid valve 1 (11) is fixedly connected to the delivery main pipe (14) through a pipeline.

5. The self-cleaning structure of a fan blade according to claim 1, characterized in that: The water collecting assembly comprises a rain collecting box (35), the rain collecting box (35) is fixedly mounted on the right bottom of the cabin (2), a plurality of filter holes are penetrated through the top of the rain collecting box (35), a sieve plate (37) is fixedly mounted on the right top of the cabin (2), the bottom of the rain collecting box (35) is fixedly connected to a second connecting pipe (36), and the output end of the second connecting pipe (36) is fixedly connected to the top of the clean water chamber (25).

6. A self-cleaning structure for fan blades according to claim 4, characterized in that: A rotary joint (21) is installed in the middle of the bottom side of the fixed plate (17), the output end of the delivery main pipe (14) is fixedly connected to the bottom end of the rotary joint (21), the top end of the rotary joint (21) is fixedly connected to a connecting pipe (22), and the output end of the connecting pipe (22) is fixedly connected to the input end of the spray gun (20).

7. The self-cleaning structure of a fan blade according to claim 1, characterized in that: Liquid level gauges (28) are provided inside the clean water chamber (25) and the cleaning liquid chamber (26).

8. The self-cleaning structure of a fan blade according to claim 1, characterized in that: A camera (6) is installed on the top of the cabin (2).

9. The self-cleaning structure of a fan blade according to claim 1, characterized in that: A water inlet (27) is provided at the top of the rear side of the cleaning liquid chamber (26).

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