Wind-driven sand and dust area outer wall cleaning method

Abstract

The invention discloses a sand and dust area outer wall cleaning method driven by wind power, which is characterized in that wind energy is collected by the rotation of fan blades and a rotating shaft is driven to rotate, and then the rotation is converted into translation by a transmission mechanism to directly drive a wiping plate on the surface of an outer wall to move so as to clean the outer wall. The building external wall can be automatically cleaned through wind power resources, so that the erosion effect of sand and dust on the building facade is reduced; therefore, the device achieves the effects of saving resources and reducing energy loss, and is particularly suitable for being implemented and applied in regions with frequent sand and dust weather in China.

Description

Technical Field

[0001] The present invention relates to the technical field of building exterior wall cleaning, in particular to a wind-driven exterior wall cleaning method in dusty areas. Background Art

[0002] In regions like Northwest my country where sandstorms are frequent, regular cleaning of building facades is essential, especially for glass structures like floor-to-ceiling windows, as wind and sand can corrode building facades. Conventional urban facade and window cleaning typically involves workers descending from rooftops using safety ropes. This method is costly and carries significant safety risks, making it unsuitable for the frequent sandstorms in Northwest China.

[0003] Some existing technologies use automatic cleaning devices to clean building exterior walls. For example, CN221489859U discloses a high-altitude exterior wall cleaning device that automatically cleans exterior walls through a brush plate driven by a drive motor and a cleaning liquid pumped through a water pipe by a pump body. After the front and rear reels are driven by a dual-axis motor to rotate, the connecting rope and the brush plate and water pipe inside the mounting frame can be retracted to adjust the cleaning height. The hydraulic rod lowers the moving wheel and raises the support frame, which can be moved back and forth to adjust the front and back cleaning direction, replacing manual cleaning and improving cleaning efficiency and safety. However, this cleaning method consumes a lot of electricity when used in dusty areas, which does not meet the current energy conservation and emission reduction requirements advocated by my country.

[0004] Therefore, how to better solve the frequent cleaning of building facades in dusty areas while complying with my country's resource conservation strategy has become a problem that needs to be solved. Summary of the Invention

[0005] In view of the above-mentioned deficiencies of the existing technology, the technical problem to be solved by the present invention is: how to provide a wind-driven method for cleaning exterior walls in dusty areas that can utilize wind resources to effectively clean the exterior walls of buildings, so as to reduce the erosion of sand and dust on the facades of buildings; so as to achieve the effect of saving resources and reducing energy loss, and is particularly suitable for implementation in areas of my country where sand and dust weather occurs more frequently.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A method for cleaning exterior walls in dusty areas driven by wind power is characterized in that wind energy is collected by rotating blades and drives the rotating shaft to rotate, and then a transmission mechanism is used to convert the rotation into translation to directly drive the wiping plate on the surface of the exterior wall to move to achieve exterior wall cleaning.

[0007] In this way, wind energy is used as clean energy to drive the cleaning board to move and clean the exterior wall without consuming additional energy, thus achieving the effect of energy saving and consumption reduction.

[0008] Furthermore, the present method is implemented by a wind-based exterior wall cleaning device, which comprises an overall rectangular mounting frame, which is vertically mounted and fixed on the exterior wall surface, and a horizontally arranged wiping plate in the mounting frame, wherein the inner side of the wiping plate is a wiping surface in contact with the exterior wall surface, and a horizontal pressure rod is fixedly arranged on the outer side of the wiping plate, and the end of the pressure rod can be slid up and down to be engaged in the left and right through-set slots on both sides of the mounting frame, and at least one end of the pressure rod passes through the slot of the mounting frame and is connected to a wind transmission device, which can be driven by wind and drive the pressure rod to move up and down.

[0009] In this way, the internal area of the installation frame is the area to be cleaned (the area to be cleaned is generally the glass exterior wall or glass window area, which has more immediate cleaning needs). The wind can drive the pressure rod to move up and down, and then drive the wiping plate to move up and down in the installation frame, so as to achieve wiping and cleaning of the exterior wall surface of the internal area of the installation frame without consuming additional energy, thereby achieving energy-saving effects.

[0010] Furthermore, the wind transmission device includes a rotating drum vertically arranged on one side of the mounting frame, and a travel slide groove which is an inclined elliptical shape is arranged along the circumferential side of the rotating drum, and the travel slide groove is arranged to circulate back and forth along the rotating drum, and the end of the pressure rod can be slid up and down to be engaged in the travel slide groove on the side of the rotating drum close to the mounting frame. The interior of the rotating drum is rotatably mounted on an inner shaft relatively fixed to the mounting frame, and an outer shaft sleeve is fixedly extended downward at the axis center of the lower end of the rotating drum and is sleeved on the outside of the inner shaft, and a fan blade device is provided on the outer shaft sleeve, and the fan blade device includes a plurality of fan blade rotating plates evenly arranged along the circumference of the outer shaft sleeve, and the fan blade rotating plates are generally vertically arranged in a rectangular shape and are radially inclined and mounted on the outer shaft sleeve.

[0011] In this way, when the wind blows, the fan blade rotating plate can receive the wind and drive the outer shaft sleeve and the rotating drum to rotate around the inner shaft, and then rely on the cooperation of the travel slide groove and the end of the pressure rod to drive the pressure rod to move up and down along the slot, so that the wiping plate can wipe and clean the outer wall.

[0012] Furthermore, a set of wind transmission devices is respectively provided on the left and right sides of the installation frame.

[0013] In this way, it is better to ensure that both ends of the pressure rod are subjected to force at the same time, the transmission is stable, and the wiping and cleaning action process of the wiper plate is more stable and reliable.

[0014] Furthermore, in the two sets of wind power transmission devices, a synchronous wheel located at the same height is installed on the outer shaft sleeve at the lower end of each wind blade device, and a horizontally arranged synchronous belt is sleeved on the two synchronous wheels.

[0015] In this way, when the wind forces received by the fan blade devices on the left and right sides are different, they can rely on the synchronous belt to achieve synchronous rotation, which better ensures the stability of the forces on both sides when the wiper moves up and down.

[0016] Furthermore, a row of nozzles facing inward and downward is horizontally arranged at the upper end of the interior of the installation frame above the upper end of the travel slide. The nozzles are connected to a water tank and a water outlet control device through water spray pipes.

[0017] In this way, while the wiping board is being wiped, the water tank can be controlled to discharge water through the nozzle to assist in cleaning, thereby improving the cleaning effect.

[0018] Furthermore, the water outlet control device includes a piston plate vertically installed in the inner cavity of the water tank, the inner cavity of the water tank forms a piston cavity along the left and right directions, the vertical cross-section of the piston cavity is non-circular, the starting position of the piston plate is located at one end of the piston cavity, and the water spray pipe is connected to the other end of the piston cavity. An internal threaded hole is provided in the middle of the piston plate and is screwed on a horizontally arranged screw. Both ends of the screw are rotatably sealed and installed on the left and right sides of the water tank, and the ends extend out of the water tank and are fixedly installed with a passive bevel gear. The lower end of the passive bevel gear is correspondingly installed with an active bevel gear, and the active bevel gear can move upward and engage with the passive bevel gear. A connecting column is coaxially fixed downward at the lower end of the active bevel gear, and the connecting column is coaxially arranged with the rotating drum. The connecting column can be slidably installed in a vertically arranged mounting sleeve, and the mounting sleeve is relatively fixed to the mounting frame. The lower end of the connecting column can be slidably plugged in and fitted in The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket.

[0019] In this way, when the wind blows the fan blade rotating plate, since the fan blade rotating plate itself is rotatable around the support rod, the fan blade rotating plate will rotate around the support rod first after receiving the wind force, so that the angle of the open side is larger. This rotation of the fan blade rotating plate will drive the side closer to the outer sleeve to rotate inward further, so that the inner end of the transmission cross bar is pushed upward, and then the transmission vertical rod is pushed upward. In this way, the upper end of the transmission vertical rod can push the connecting column and the active bevel gear upward to achieve meshing with the passive bevel gear. After the active bevel gear and the passive bevel gear engage, their upward travel is limited, and the transmission vertical rod cannot move upward any further, thus positioning the fan blade rotating plate. At this time, the fan blade rotating plate opens at a wider angle to better withstand wind force, and begins to drive the outer sleeve and the rotating drum to rotate under the action of wind. The rotation of the rotating drum drives the wiping plate to start moving up and down, while relying on the vertical concave-convex matching structure to drive the connecting column and the active bevel gear to rotate synchronously, thereby driving the passive bevel gear and the lead screw to rotate. The lead screw drives the piston plate to move toward the end where the water spray pipe is located through the lead screw nut transmission structure. In this way, the piston plate moves and squeezes the water in the piston cavity out of the nozzle and sprinkles it onto the wiping area inside the installation frame. Therefore, it can rely on wind force to achieve automatic coordination between water discharge and wiping, better improving the cleaning effect.

[0020] Furthermore, one end of the water spray pipe provided in the piston chamber is also connected to a water inlet pipe, and a water inlet control valve is installed on the water inlet pipe and is connected to the water pipe of the pipe network.

[0021] Like this, realize the water inlet control of water tank conveniently.

[0022] Furthermore, the nozzle is a pressure-triggered nozzle or a pressure switch is installed on the water spray pipe.

[0023] In this way, it is ensured that water will not flow out when the piston plate does not push and apply pressure. The pressure-triggered spray nozzle and pressure switch are conventional existing devices, and their structures are not described in detail here.

[0024] Furthermore, a screw return spring is provided between the screw and the side wall of the water tank. The screw return spring is a clockwork spring. One end of the clockwork spring is fixed to the side wall of the water tank, and the other end is fixed to the screw.

[0025] In this way, when the wind stops, the active bevel gear and the transmission vertical rod can be reset downward by their own weight, and the lead screw can be assisted by the spring to achieve reverse rotation and reset.

[0026] Furthermore, a smooth section (without external thread) is provided on the surface of the screw in the piston cavity near the water spray pipe, and a piston plate return spring is connected between the side of the piston plate facing away from the water spray pipe and the corresponding inner wall of the piston cavity.

[0027] In this way, when the piston plate is pushed to the smooth section of the lead screw, it begins to slide and is no longer subjected to force, preventing the piston plate from getting stuck after being pushed to the end. When resetting, the piston plate re-engages with the thread of the lead screw under the combined action of the tension of the piston plate return spring and the reverse rotation of the lead screw, achieving the reverse reset of the piston plate.

[0028] Furthermore, a clutch is installed on the lead screw at a position between the passive bevel gear and the water tank.

[0029] This way, when needed, the leadscrew can be controlled to disconnect axially, shutting off the water flow. For example, if a sandstorm is forecast, with strong winds and sand, the water flow could potentially cause sediment blockage, so the clutch can be disconnected in advance to shut off the water flow. Alternatively, if the water tank requires internal inspection and adjustment, the clutch can be disconnected to facilitate maintenance.

[0030] To sum up, the present invention can utilize wind resources to achieve automatic cleaning of building exterior walls, so as to reduce the erosion of sand and dust on the building facades; so that it can save resources and reduce energy loss, and is particularly suitable for implementation in areas of my country where sandstorms occur frequently. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the structure of the wind-based exterior wall cleaning device in the optimal embodiment of the present invention.

[0032] Figure 2 for Figure 1 A cross-sectional view of the local structure where the lower end of the separate connection column and the rotating drum meet.

[0033] Figure 3 for Figure 1 Schematic diagram of the top view of the individual fan blade device. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to specific embodiments.

[0035] Optimal embodiment: A method for cleaning exterior walls in dusty areas driven by wind power, which is characterized in that it relies on the rotation of wind blades to collect wind energy and drive the rotation of the shaft, and then relies on a transmission mechanism to convert the rotation into a translational motion to directly drive the wiper on the surface of the exterior wall to move to achieve exterior wall cleaning.

[0036] In this way, wind energy is used as clean energy to drive the cleaning board to move and clean the exterior wall without consuming additional energy, thus achieving the effect of energy saving and consumption reduction.

[0037] In practice, the method is implemented by a wind-powered exterior wall cleaning device, the wind-powered exterior wall cleaning device is described in detail. Figure 1-3As shown, it includes an overall rectangular mounting frame 1, which is vertically installed and fixed on the outer wall surface. A horizontally arranged wiping board 2 is provided in the mounting frame. The inner side of the wiping board 2 is a wiping surface that is in contact with the outer wall surface. A horizontal pressure rod 3 is fixedly provided on the outer side of the wiping board. The end of the pressure rod 3 can be slid up and down to be engaged in the left and right through-set grooves on both sides of the mounting frame 1. At least one end of the pressure rod 3 passes through the groove of the mounting frame and is connected to the wind transmission device. The wind transmission device can be driven by wind and drive the pressure rod 3 to move up and down.

[0038] In this way, the internal area of the installation frame is the area to be cleaned (the area to be cleaned is generally the glass exterior wall or glass window area, which has more immediate cleaning needs). The wind can drive the pressure rod to move up and down, and then drive the wiping plate to move up and down in the installation frame to wipe and clean the exterior wall surface in the internal area of the installation frame without consuming additional energy, thus achieving energy-saving effects. During implementation, the installation frame can be fixed to the surface of the exterior wall area to be cleaned, such as the glass window area, by means of screws and other fixings, so that the fixed area can be wiped without moving; or it can be fixed to the exterior wall surface that needs to be cleaned temporarily by using an adsorption walking device. After cleaning, the position can be adjusted by the adsorption walking device to achieve cleaning of a larger exterior wall area. The adsorption walking device can be directly implemented by purchasing existing technology products.

[0039] Among them, the wind transmission device includes a rotating drum 4 vertically arranged on one side of the mounting frame, and a travel slide 5 in an inclined elliptical shape is arranged on the circumferential side of the rotating drum 4. The travel slide 5 is arranged to circulate back and forth along the rotating drum, and the end of the pressure rod 3 can be slid up and down to be snap-fitted into the travel slide 5 on the side of the rotating drum close to the mounting frame. The interior of the rotating drum 4 is rotatably mounted on an inner shaft 6 relatively fixed to the mounting frame, and an outer shaft sleeve 7 is fixedly extended downward at the axis center of the lower end of the rotating drum 4 and is sleeved on the outside of the inner shaft. A fan blade device is provided on the outer shaft sleeve 7, and the fan blade device includes a plurality of fan blade rotating plates 8 evenly arranged along the circumference of the outer shaft sleeve. The fan blade rotating plate 8 is a vertically arranged rectangle as a whole and is radially inclined and mounted on the outer shaft sleeve 7.

[0040] In this way, when the wind blows, the fan blade rotating plate can receive the wind and drive the outer shaft sleeve and the rotating drum to rotate around the inner shaft, and then rely on the cooperation of the travel slide groove and the end of the pressure rod to drive the pressure rod to move up and down along the slot, so that the wiping plate can wipe and clean the outer wall.

[0041] Wherein, a set of wind transmission devices is respectively provided on the left and right sides of the installation frame 1.

[0042] In this way, it is better to ensure that both ends of the pressure rod are subjected to force at the same time, the transmission is stable, and the wiping and cleaning action process of the wiper plate is more stable and reliable.

[0043] Among them, in the two sets of wind power transmission devices, a synchronous wheel 9 located at the same height is installed on the outer shaft sleeve 7 at the lower end of each wind blade device, and a horizontally arranged synchronous belt 10 is sleeved on the two synchronous wheels 9.

[0044] In this way, when the wind forces received by the fan blade devices on the left and right sides are different, they can rely on the synchronous belt to achieve synchronous rotation, which better ensures the stability of the forces on both sides when the wiper moves up and down.

[0045] Among them, a row of nozzles 11 facing inward and downward is horizontally arranged at the upper end of the interior of the installation frame above the upper end of the travel slide. The nozzles 11 are connected to a water tank 13 and a water outlet control device through a water spray pipe 12.

[0046] In this way, while the wiping board is being wiped, the water tank can be controlled to discharge water through the nozzle to assist in cleaning, thereby improving the cleaning effect.

[0047] Among them, the water outlet control device includes a piston plate 14 vertically installed in the inner cavity of the water tank, and the inner cavity of the water tank forms a piston cavity along the left and right directions. The vertical cross-section of the piston cavity is non-circular. The starting position of the piston plate 14 is located at one end of the piston cavity, and the water spray pipe 12 is connected to the other end of the piston cavity. An internal threaded hole is provided in the middle of the piston plate 14 and is screwed on a horizontally arranged screw 15. The two ends of the screw 15 are rotatably sealed and installed on the left and right sides of the water tank, and the ends extend outward from the water tank and are fixed with a passive bevel gear 16. The lower end of the passive bevel gear 16 is correspondingly installed with an active bevel gear 17. The active bevel gear 17 can move upward and mesh with the passive bevel gear. The lower end of the active bevel gear 17 is coaxially fixed downward with a connecting column 18. The connecting column 18 is arranged coaxially with the rotating drum 4. The connecting column 18 can be slidably installed in a vertically arranged mounting sleeve 19. The mounting sleeve 19 is relatively fixed to the mounting frame 1, and the lower end of the connecting column 18 can be slidably plugged in and matched In a connecting groove with an integral cylindrical inner cavity at the upper end of the rotating drum 4, a vertical concave-convex matching structure 20 is provided between the outer side of the connecting column 18 and the inner side of the connecting groove for transmitting torque; the water outlet control device also includes the fan blade device, in which the middle positions of the upper and lower ends of the fan blade rotating plate 8 are each installed on the outer sleeve through a horizontally arranged support rod 21, the inner end of the support rod 21 is fixedly connected to the outer sleeve 7, and the outer end of the support rod 21 is rotatably connected to the fan blade rotating plate 8, and the upper end of the fan blade rotating plate 8 is close to the fan blade rotating plate 8. A universal joint is also provided on one side near the outer sleeve 7 and is connected to the outer end of a transmission cross rod 23. The inner end of the transmission cross rod 23 extends obliquely upward and is hinged to the lower end of a vertically arranged transmission vertical rod 24. The lower end of the transmission vertical rod 24 can be vertically slidably installed in a give-way slide groove vertically arranged on the outer surface of the outer sleeve 7. The upper and middle parts of the transmission vertical rod 24 can be vertically slidably installed in a give-way slide hole vertically arranged in the rotating drum 4. The upper end of the transmission vertical rod 24 is abutted against the lower end of the connecting column 18.

[0048] In this way, when the wind blows the fan blade rotating plate, since the fan blade rotating plate itself is rotatable around the support rod, the fan blade rotating plate will rotate around the support rod first after receiving the wind force, so that the angle of the open side is larger. This rotation of the fan blade rotating plate will drive the side closer to the outer sleeve to rotate inward further, so that the inner end of the transmission cross bar is pushed upward, and then the transmission vertical rod is pushed upward. In this way, the upper end of the transmission vertical rod can push the connecting column and the active bevel gear upward to achieve meshing with the passive bevel gear. After the active bevel gear and the passive bevel gear engage, their upward travel is limited, and the transmission vertical rod cannot move upward any further, thus positioning the fan blade rotating plate. At this time, the fan blade rotating plate opens at a wider angle to better withstand wind force, and begins to drive the outer sleeve and the rotating drum to rotate under the action of wind. The rotation of the rotating drum drives the wiping plate to start moving up and down, while relying on the vertical concave-convex matching structure to drive the connecting column and the active bevel gear to rotate synchronously, thereby driving the passive bevel gear and the lead screw to rotate. The lead screw drives the piston plate to move toward the end where the water spray pipe is located through the lead screw nut transmission structure. In this way, the piston plate moves and squeezes the water in the piston cavity out of the nozzle and sprinkles it onto the wiping area inside the installation frame. Therefore, it can rely on wind force to achieve automatic coordination between water discharge and wiping, better improving the cleaning effect.

[0049] One end of the water spray pipe 12 of the piston chamber is also connected to a water inlet pipe 26 , on which a water inlet control valve is installed and connected to the water pipe of the pipe network.

[0050] Like this, realize the water inlet control of water tank conveniently.

[0051] The nozzle 11 is a pressure-triggered nozzle or a pressure switch is installed on the water spray pipe 12 .

[0052] In this way, it is ensured that water will not flow out when the piston plate does not push and apply pressure. The pressure-triggered spray nozzle and pressure switch are conventional existing devices, and their structures are not described in detail here.

[0053] A screw return spring 27 is provided between the screw 15 and the side wall of the water tank. The screw return spring 27 is a spring spring, one end of which is fixed to the side wall of the water tank, and the other end is fixed to the screw.

[0054] In this way, when the wind stops, the active bevel gear and the transmission vertical rod can be reset downward by their own weight, and the lead screw can be assisted by the spring to achieve reverse rotation and reset.

[0055] Among them, a smooth section 28 (without external thread) is provided on the surface of the screw 15 in the piston cavity near the water spray pipe, and a piston plate return spring 29 is also connected between the side of the piston plate 14 facing away from the water spray pipe 12 and the corresponding inner side wall of the piston cavity.

[0056] In this way, when the piston plate is pushed to the smooth section of the lead screw, it begins to slide and is no longer subjected to force, preventing the piston plate from getting stuck after being pushed to the end. When resetting, the piston plate re-engages with the thread of the lead screw under the combined action of the tension of the piston plate return spring and the reverse rotation of the lead screw, achieving the reverse reset of the piston plate.

[0057] A clutch 30 is also installed on the lead screw 15 at a position between the passive bevel gear and the water tank.

[0058] This way, when needed, the leadscrew can be controlled to disconnect axially, shutting off the water flow. For example, if a sandstorm is forecast, with strong winds and sand, the water flow could potentially cause sediment blockage, so the clutch can be disconnected in advance to shut off the water flow. Alternatively, if the water tank requires internal inspection and adjustment, the clutch can be disconnected to facilitate maintenance.

Claims

1. A method for cleaning exterior walls in dusty areas driven by wind, characterized in that: The wind energy is collected by the rotation of the blades and drives the shaft to rotate, and then the transmission mechanism converts the rotation into translation to directly drive the wiping board on the surface of the exterior wall to move and achieve exterior wall cleaning.

2. The wind-driven exterior wall cleaning method for dusty areas according to claim 1, characterized in that: A wind-powered exterior wall cleaning device is implemented, and the wind-powered exterior wall cleaning device includes an overall rectangular mounting frame, which is vertically installed and fixed on the exterior wall surface. A horizontally arranged wiping plate is provided in the mounting frame, and the inner side of the wiping plate is a wiping surface that is in contact with the exterior wall surface. A horizontal pressure rod is fixedly provided on the outer side of the wiping plate, and the end of the pressure rod can be slid up and down to be engaged in the left and right through-set slots on both sides of the mounting frame. At least one end of the pressure rod passes through the slot of the mounting frame and is connected to a wind transmission device. The wind transmission device can be driven by wind and drives the pressure rod to move up and down.

3. The wind-driven exterior wall cleaning method in dusty areas according to claim 2, characterized in that: The wind transmission device includes a rotating drum vertically arranged on one side of the mounting frame, and a travel slide groove which is an inclined elliptical shape as a whole is arranged along the circumferential side of the rotating drum, and the travel slide groove is arranged to circulate back and forth along the rotating drum. The end of the pressure rod can be slid up and down and snap-fit into the travel slide groove on the side of the rotating drum close to the mounting frame. The interior of the rotating drum is rotatably mounted on an inner shaft relatively fixed to the mounting frame, and an outer shaft sleeve is fixedly extended downward at the axis center of the lower end of the rotating drum and is sleeved on the outside of the inner shaft. A fan blade device is provided on the outer shaft sleeve, and the fan blade device includes a plurality of fan blade rotating plates evenly arranged along the circumference of the outer shaft sleeve. The fan blade rotating plates are generally vertically arranged in a rectangular shape and are radially inclined and mounted on the outer shaft sleeve.

4. The wind-driven exterior wall cleaning method in dusty areas according to claim 3, characterized in that: A set of wind transmission devices is respectively arranged on the left and right sides of the installation frame.

5. The wind-driven exterior wall cleaning method in dusty areas according to claim 4, characterized in that: In the two sets of wind power transmission devices, a synchronous wheel located at the same height is installed on the outer shaft sleeve at the lower end of each fan blade device, and a horizontally arranged synchronous belt is sleeved on the two synchronous wheels.

6. The wind-driven exterior wall cleaning method in dusty areas according to claim 3, characterized in that: A row of nozzles facing inward and downward is horizontally arranged at the upper end of the interior of the installation frame, which is higher than the upper end of the travel slide. The nozzles are connected to a water tank and a water outlet control device through water spray pipes.

7. The wind-driven exterior wall cleaning method in dusty areas according to claim 6, characterized in that: The water outlet control device includes a piston plate vertically installed in the inner cavity of the water tank, the inner cavity of the water tank forms a piston cavity along the left and right directions, the vertical cross-section of the piston cavity is non-circular, the starting position of the piston plate is located at one end of the piston cavity, and the water spray pipe is connected to the other end of the piston cavity. An internal threaded hole is provided in the middle of the piston plate and is screwed on a horizontally arranged screw. Both ends of the screw are rotatably sealed and installed on the left and right sides of the water tank, and the ends extend out of the water tank and are fixedly installed with a passive bevel gear. The lower end of the passive bevel gear is correspondingly installed with an active bevel gear, and the active bevel gear can move upward and engage with the passive bevel gear. A connecting column is coaxially fixed downward at the lower end of the active bevel gear, and the connecting column is arranged coaxially with the rotating drum. The connecting column can be slidably installed in a vertically arranged mounting sleeve, and the mounting sleeve is relatively fixed to the mounting frame. The lower end of the connecting column can be slidably plugged into the rotating drum. The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket.

8. The wind-driven exterior wall cleaning method in dusty areas according to claim 7, characterized in that: One end of the piston chamber where the water spray pipe is provided is also connected to a water inlet pipe, on which a water inlet control valve is installed and connected to the water pipe of the pipe network; The nozzle is a pressure-triggered nozzle or a pressure switch is installed on the water spray pipe.

9. The wind-driven exterior wall cleaning method in dusty areas according to claim 7, characterized in that: A screw return spring is also provided between the screw and the side wall of the water tank. The screw return spring is a spring spring, one end of which is fixed to the side wall of the water tank, and the other end is fixed to the screw. A smooth section is provided on the surface of the lead screw in the piston cavity near the water spray pipe, and a piston plate reset spring is connected between the side of the piston plate away from the water spray pipe and the corresponding inner wall of the piston cavity.

10. The wind-driven exterior wall cleaning method in dusty areas according to claim 7, characterized in that: A clutch is also installed on the lead screw at a position between the passive bevel gear and the water tank.

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