Dust Suppression Device and Method for Green Building Construction

Abstract

The present invention discloses a dust suppression device and method for green building construction, comprising a fixed base. A water tank body is fixedly installed on one side ofthe top end of the fixed base. The invention, by providing a baffle assembly and an electromagnetic valve, enables the lifting cylinder to perform telescopic motion to adjust the height of the baffle body, and the displacement cylinder to perform telescopic motion to adjust the distance between the baffle body and the high—pressure nozzle. The baffle body adjusts the spray area of the highpressure nozzle, and the electromagnetic valve adjusts the spray flow rate, thereby avoiding the formation of puddles or water pits due to excessive spray water, which could affect walking outside the construction site and even cause erosion of construction equipment.

Description

Technical Field The present invention relates to the technical eld of green building construction, and more specically to a . Background Art Green buildings refer to buildings that, in the processes of design, construction, and operation, minimize negative impacts on the environment and provide a healthy and comfortable indoor environment for occupants. Green buildings adopt energy-saving technologies and equipment, such as highefciency insulation materials, energy management systems, LED lighting, and so on, which can reduce energy consumption and lower carbon emissions. By using technologies such as low-ow faucets, watersaving toilets, and rainwater harvesting systems, green buildings can minimize water consumption and improve water resource utilization efficiency. By employing environmentally friendly materials and optimizing indoor ventilation and lighting systems, green buildings can provide a healthier and more comfortable indoor environment, thereby reducing adverse effects on residents health. Green buildings adopt eco friendly materials and technologies to reduce the use of toxic chemicals, lower indoor air pollution, and decrease the environmental impact of construction waste. Green buildings encourage the use of renewable and recycled materials to reduce resource consumption and waste generation, thereby promoting the development of a circular economy. Green buildings can enhance the image of communities, improve quality of life, and at the same time create job opportunities for the local economy. Dust suppression in construction mainly functions through suppressing the diffusion of dust, reducing air pollution, and improving the working environment. High-pressure spraying systems atomize water into micron-sized particles that adsorb airborne dust particles such as PM10 and PM2.5. After forming agglomerates, these particles settle under the inuence of gravity, effectively controlling the diffusion range of dust on construction sites and reducing air pollution. The dust suppression efficiency can exceed 80%, controlling dust concentration below 0.5 mg / m3, which is lower than the national standard limit, thus avoiding environmental pollution problems caused by excessive dust levels. The working environment is improved as the mist particles can increase air humidity and reduce temperature, thereby enhancing worker comfort. At the same time, dust suppression reduces respiratory tract irritation caused by dust particles, lowers the risk of disease, and ensures construction safety. However, traditional dust suppression devices have the following drawbacks: Traditional dust suppression devices produce water sprays with a xed ow thickness, which easily leads to excessive water accumulation around the construction site, forming puddles or water pits that affect walking outside the construction area. The accumulated water can also erode construction equipment, potentially resulting in immeasurable losses. Summary of the Invention The purpose of the present invention is to provide a , so as to solve the problem mentioned in the background art that the water ow discharged from traditional dust suppression devices has a fixed thickness, which easily causes excessive sprayed water around the construction site to form puddles or water pits, affecting walking outside the construction site, and that the accumulated puddles may erode construction equipment, resulting in immeasurable losses. To achieve the above purpose, the present invention provides the following technical solution: A dust suppression device for green building construction comprises a xed base, wherein a water tank body is xedly mounted on one side of the top end of the xed base, a rotary table is rotatably connected to the other side of the top end of the xed base, a lifting assembly is xedly mounted on the top end of the rotary table, a dust suppression platform is xedly mounted on the top end of the lifting assembly, a high-pressure nozzle is xedly mounted on one side ofthe dust suppression platform, a bafe assembly is xedly mounted on the top end of the dust suppression platform, and a controller is xedly mounted on the surface ofthe water tank body. As a preferred technical solution of the present invention, the bafe assembly comprises a lifting cylinder and a length shell, wherein a movable end of the lifting cylinder is xedly connected to the bottom end ofthe length shell, one end ofthe length shell is slidably connected to a length plate, one end of the length plate is xedly mounted with a bafe body, the bottom end of the bafe body is xedly mounted with a spoiler plate, the top end of the length shell is xedly mounted with a rst vertical plate, the top end of the length plate is xedly mounted with a second vertical plate, one side of the rst vertical plate is xedly mounted with a displacement cylinder, a movable end of the displacement cylinder is xedly connected to the side opposite to the second vertical plate, and a xed end of the lifting cylinder is xedly connected to the dust suppression platform, wherein the lifting cylinder performs telescopic motion to adjust the height of the bafe body, the displacement cylinder performs telescopic motion to push the second vertical plate from one side so that the length plate slides relative to the length shell to adjust the distance between the bafe body and the highpressure nozzle and adjust the spray area of the high-pressure nozzle. As a preferred technical solution of the present invention, the lifting assembly comprises a height shell and a height rod, wherein the top end of the height shell is xedly connected to the bottom end of the height rod, the bottom end of the inner wall of the height shell is rotatably connected with a screw rod, the top end ofthe screw rod is threadedly connected to the middle of the bottom end of the height rod, a driven bevel gear is xedly mounted at the connection between the screw rod and the height shell, one side of the inner wall of the height shell is rotatably connected with a driving bevel gear, the outer side of the driving bevel gear is in meshing connection with the outer side of the driven bevel gear, a waterproof motor for driving the driving bevel gear to rotate is xedly mounted on the surface of the height shell, the bottom end of the height shell is xedly connected to the rotary table, and the top end of the height rod is connected to the dust suppression platform, wherein after being powered on the waterproof motor starts and drives the driving bevel gear to rotate, the driving bevel gear contacts the driven bevel gear, the driven bevel gear drives the screw rod to rotate, the thread on the surface of the screw rod matches the thread on the inner wall of the height rod, and the height rod is limited by the height shell with matching shape and size, so the height rod slides relative to the screw rod to adjust the spray height of the high-pressure nozzle. As a preferred technical solution of the present invention, a miniature motor is xedly installed inside the xed base, a driving gear is xedly mounted on the output end of the miniature motor, a driven gear is xedly mounted on the surface of the rotary table, the outer side of the driving gear is in meshing connection with the outer side of the driven gear, wherein after being powered on the miniature motor starts and drives the driving gear to rotate, the driving gear contacts the driven gear, and the driven gear drives the rotary table to rotate to adjust the spray angle of the highpressure nozzle. As a preferred technical solution of the present invention, a sealing plug is clamped and mounted on the top end of the water tank body, an audible and visual alarm is xedly mounted on the water tank body on one side of the sealing plug, and a liquid level sensor extending to the outside is xedly installed inside the water tank body, wherein the liquid level sensor detects the water inside the water tank body in real time, and when the water level is detected to be below a preset value the audible and visual alarm gives an alarm, and the user opens the sealing plug to inject water into the water tank body. As a preferred technical solution of the present invention, a pump body is xedly mounted on the surface of the water tank body, wherein the inlet of the pump body is xedly connected to a liquid inlet hose extending into the interior of the water tank body, the outlet of the pump body is xedly connected to a delivery hose, one end of the delivery hose is xedly mounted with a mounting bearing, one end of the mounting bearing is xedly connected to the side facing the high-pressure nozzle, and an electromagnetic valve is xedly mounted at the middle section of the delivery hose, wherein after being powered on the pump body starts and draws water from the water tank body through the liquid inlet hose, and the drawn water is delivered through the delivery hose regulated by the electromagnetic valve to the high-pressure nozzle for spraying, thereby performing dust suppression treatment at the green building construction site. As a preferred technical solution of the present invention, a liquid collection tank is xedly mounted on the xed base at one side of the rotary table, wherein excess water is deected by the spoiler plate and collected into the liquid collection tank. As a preferred technical solution of the present invention, moving wheels are xedly mounted at all four corners ofthe bottom end ofthe xed base, positioning assemblies are xedly mounted on both sides of the xed base, a push plate is xedly mounted on the surface of the xed base, and each of the two positioning assemblies comprises a positioning housing and a positioning platform, wherein miniature cylinders are xedly mounted on both sides of the top end of the inner wall of the positioning housing, movable ends of the two miniature cylinders are respectively xedly connected to both sides of the top end of the positioning platform, a plurality of ground pile blocks are xedly mounted on the bottom end ofthe positioning platform, and one side of each of the two positioning housings is xedly connected to the xed base, wherein the user pushes the push plate by hand, causing the moving wheels on the xed base to rotate by friction with the ground to transfer the dust suppression device to the place of use, then the miniature cylinders perform telescopic motion, pushing the positioning platform from the top so that the ground pile blocks on the positioning platform are inserted into the place of use to x the dust suppression device. The method for using the dust suppression device for green building construction of the present invention comprises the following steps: Step 1. Device transfer: transfer the dust suppression device to the green building construction site and x the device in place; Step 2. Equipment adjustment: adjust the spray area of the dust suppression device at the green building construction site by controlling the electromagnetic valve and the bafe assembly; Step 3. Device spraying: start the pump body to allow the high-pressure nozzle to spray water for dust suppression treatment at the green building construction site. The benecial effects of the present invention compared with the prior art are as follows: By providing a bafe assembly and an electromagnetic valve, the lifting cylinder performs telescopic motion to adjust the height of the bafe body; the displacement cylinder performs telescopic motion to adjust the distance between the bafe body and the highpressure nozzle. The bafe body adjusts the spray area ofthe high-pressure nozzle, and the electromagnetic valve adjusts the spray ow rate. This prevents excessive sprayed water from forming puddles or water pits, which could affect walking outside the construction site and may even lead to erosion of constructionequipment. Description of the Drawings FIG. 1 is a side view of the present invention; FIG. 2 is a sectional view of the present invention; FIG. 3 is a sectional view of the positioning assembly of the present invention; FIG. 4 is a connection diagram of the bafe assembly and the dust suppression platform of the present invention; FIG. 5 is a side view of the water tank body ofthe present invention; FIG. 6 is an enlarged schematic view of area A in the present invention; FIG. 7 is a owchart of the present invention. In the drawings: 1. Fixed base; 2. Moving wheel; 3. Positioning assembly; 31. Positioning housing; 32. Miniature cylinder; 33. Positioning platform; 34. Ground pile block; 4. Push plate; 5. Water tank body; 6. Controller; 7. Pump body; 8. Delivery hose; 9. Electromagnetic valve; 10. Mounting bearing; 11. Bafe assembly; 111. Lifting cylinder; 112. Length shell; 113. First vertical plate; 114. Displacement cylinder; 115. Second vertical plate; 116. Length plate; 117. Bafe body; 118. Spoiler plate; 12. Dust suppression platform; 13. High-pressure nozzle; 14. Lifting assembly; 141. Waterproof motor; 142. Height shell; 143. Height rod; 144. Screw rod; 145. Driving bevel gear; 146. Driven bevel gear; 15. Rotary table; 16. Liquid collection tank; 17. Liquid level sensor; 18. Audible and visual alarm; 19. Sealing plug; 20. Driven gear; 21. Miniature motor; 22. Driving gean Detailed Description The technical solutions in the embodiments of the present invention will now be clearly and completely described with reference to the embodiments. It is obvious that the described embodiments are merely a part ofthe embodiments of the present invention and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without inventive efforts shall fall within the scope of protection of the present invention. Please refer to Fle.17, the present invention provides a dust suppression device for green building construction, comprising a xed base 1. A water tank body 5 is xedly mounted on one side of the top end of the xed base 1. A rotary table 15 is rotatably connected to the other side of the top end of the xed base 1. A lifting assembly 14 is xedly mounted on the top end of the rotary table 15. A dust suppression platform 12 is xedly mounted on the top end of the lifting assembly 14. A high-pressure nozzle 13 is xedly mounted on one side of the dust suppression platform 12. A bafe assembly 11 is xedly mounted on the top end of the dust suppression platform 12. A controller 6 is xedly mounted on the surface of the water tank body 5. The bafe assembly 11 comprises a lifting cylinder 111 and a length shell 112. A movable end of the lifting cylinder 111 is xedly connected to the bottom end of the length shell 112. One end of the length shell 112 is slidably connected to a length plate 116. One end ofthe length plate 116 is xedly mounted with a bafe body 117. A spoiler plate 118 is xedly mounted at the bottom end of the bafe body 117. A rst vertical plate 113 is xedly mounted on the top end of the length shell 112. A second vertical plate 115 is xedly mounted on the top end of the length plate 116. A displacement cylinder 114 is xedly mounted on one side of the rst vertical plate 113. A movable end of the displacement cylinder 114 is xedly connected to the side opposite to the second vertical plate 115. A xed end of the lifting cylinder 111 is xedly connected to the dust suppression platform 12. The lifting cylinder 111 performs telescopic motion to adjust the height ofthe bafe body 117. The displacement cylinder 114 performs telescopic motion, pushing the second vertical plate 115 from one side, causing the length plate 116 to slide relative to the length shell 112, adjusting the distance between the bafe body 117 and the high-pressure nozzle 13, and adjusting the spray area of the highpressure nozzle 13. The lifting assembly 14 comprises a height shell 142 and a height rod 143. The top end of the height shell 142 is xedly connected to the bottom end of the height rod 143. A screw rod 144 is rotatably connected to the bottom end of the inner wall of the height shell 142. The top end of the screw rod 144 is threadedly connected to the middle of the bottom end of the height rod 143. A driven bevel gear 146 is xedly mounted at the connection between the screw rod 144 and the height shell 142. A driving bevel gear 145 is rotatably connected to one side of the inner wall of the height shell 142. The outer side ofthe driving bevel gear 145 is in meshing connection with the outer side of the driven bevel gear 146. A waterproof motor 141 for driving the driving bevel gear 145 to rotate is xedly mounted on the surface of the height shell 142. The bottom end of the height shell 142 is xedly connected to the rotary table 15. The top end of the height rod 143 is connected to the dust suppression platform 12. After being powered on, the waterproof motor 141 starts and drives the driving bevel gear 145 to rotate. The driving bevel gear 145 meshes with the driven bevel gear 146. The driven bevel gear 146 drives the screw rod 144 to rotate. The threads on the surface of the screw rod 144 match the threads on the inner wall of the height rod 143. The height rod 143 is limited by the height shell 142 with matching shape and size, so the height rod 143 slides relative to the screw rod 144, thereby adjusting the spray height of the high-pressure nozzle 13. A miniature motor 21 is xedly installed inside the xed base 1. A driving gear 22 is xedly mounted on the output end of the miniature motor 21. A driven gear 20 is xedly mounted on the surface of the rotary table 15. The outer side of the driving gear 22 is in meshing connection with the outer side of the driven gear 20. After being powered on, the miniature motor 21 starts and drives the driving gear 22 to rotate. The driving gear 22 meshes with the driven gear 20. The driven gear 20 drives the rotary table 15 to rotate, thereby adjusting the spray angle of the high- pressure nozzle 13. A sealing plug 19 is clamped and mounted on the top end of the water tank body 5. An audible and visual alarm 18 is xedly mounted on the water tank body 5 on one side ofthe sealing plug 19. A liquid level sensor 17 extending to the outside is xedly installed inside the water tank body 5. The liquid level sensor 17 detects the water level inside the water tank body 5 in real time. When the water level is detected to be below a preset value, the audible and visual alarm 18 is triggered. The user opens the sealing plug 19 to add water into the water tank body 5. A pump body 7 is xedly mounted on the surface of the water tank body 5. The inlet of the pump body 7 is xedly connected to a liquid inlet hose extending into the interior of the water tank body 5. The outlet of the pump body 7 is xedly connected to a delivery hose 8. One end of the delivery hose 8 is xedly mounted with a mounting bearing 10. One end of the mounting bearing 10 is xedly connected to the side facing the highpressure nozzle 13. An electromagnetic valve 9 is xedly mounted at the middle section of the delivery hose 8. After being powered on, the pump body 7 starts and draws water from the water tank body 5 through the liquid inlet hose. The drawn water is delivered through the delivery hose 8, regulated by the electromagnetic valve 9, to the high-pressure nozzle 13 for spraying, thereby performing dust suppression treatment at the green building construction site. A liquid collection tank 16 is xedly mounted on the xed base 1 at one side of the rotary table 15. Excess water is deected by the spoiler plate 118 and collected into the liquid collection tank 16. Moving wheels 2 are xedly mounted at all four corners of the bottom end of the xed base 1. Positioning assemblies 3 are xedly mounted on both sides of the xed base 1. A push plate 4 is xedly mounted on the surface of the xed base 1. Each of the two positioning assemblies 3 comprises a positioning housing 31 and a positioning platform 33. Miniature cylinders 32 are xedly mounted on both sides of the top end of the inner wall of the positioning housing 31. Movable ends of the two miniature cylinders 32 are respectively xedly connected to both sides of the top end of the positioning platform 33. A plurality of ground pile blocks 34 are xedly mounted on the bottom end of the positioning platform 33. One side of each of the two positioning housings 31 is xedly connected to the xed base 1. The user pushes the push plate 4 by hand, causing the moving wheels 2 on the xed base 1 to roll due to friction with the ground, thereby transferring the dust suppression device to the place of use. Then, the miniature cylinders 32 perform telescopic motion, pushing the positioning platform 33 from the top. The ground pile blocks 34 on the positioning platform 33 are inserted into the ground at the place of use to x the dust suppression device. The method for using the dust suppression device for green building construction of the present invention comprises the following steps: Step 1. Device transfer: transfer the dust suppression device to the green building construction site and x the device in place; Step 2. Equipment adjustment: adjust the spray area of the dust suppression device at the green building construction site by controlling the electromagnetic valve 9 and the bafe assembly 11; Step 3. Device spraying: start the pump body 7 to allow the high-pressure nozzle 13 to spray water for dust suppression treatment at the green building construction site. In the present invention, the user pushes the push plate 4 by hand, causing the moving wheels 2 on the xed base 1 to rotate by friction with the ground, thereby transferring the dust suppression device to the place of use. Then, the miniature cylinders 32 perform telescopic motion, pushing the positioning platform 33 from the top. The ground pile blocks 34 on the positioning platform 33 are inserted into the place of use to x the dust suppression device. After being powered on, the miniature motor 21 starts and drives the driving gear 22 to rotate. The driving gear 22 meshes with the driven gear 20, and the driven gear 20 drives the rotary table 15 to rotate, thereby adjusting the spray angle of the highpressure nozzle 13. After being powered on, the waterproof motor 141 starts and drives the driving bevel gear 145 to rotate. The driving bevel gear 145 meshes with the driven bevel gear 146, and the driven bevel gear 146 drives the screw rod 144 to rotate. The threads on the surface of the screw rod 144 match the threads on the inner wall of the height rod 143. The height rod 143 is limited by the height shell 142 of matching shape and size, so the height rod 143 slides relative to the screw rod 144, thereby adjusting the spray height of the high-pressure nozzle 13. The lifting cylinder 111 performs telescopic motion to adjust the height of the bafe body 117. The displacement cylinder 114 performs telescopic motion, pushing the second vertical plate 115 from one side, causing the length plate 116 to slide relative to the length shell 112, thereby adjusting the distance between the bafe body 117 and the highpressure nozzle 13, and adjusting the spray area of the high- pressure nozzle 13. After being powered on, the pump body 7 starts and draws water from inside the water tank body 5 through the liquid inlet hose. The drawn water is delivered through the delivery hose 8, regulated by the electromagnetic valve 9, to the high-pressure nozzle 13 for spraying, thereby performing dust suppression treatment at the green building construction site. The liquid level sensor 17 detects the water level inside the water tank body 5 in real time. When the water level is detected to be below the preset value, the audible and visual alarm 18 is triggered. The user opens the sealing plug 19 to add water into the water tank body 5. Although the present invention has been described in detail with reference to the above embodiments, it will be understood by those skilled in the art that modications may still be made to the technical solutions described in the above embodiments, or that equivalent replacements may be made for some of the technical features. Any modications, equivalent replacements, or improvements made within the spirit and principles of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A dust suppression device for green building construction, comprising a fixed base (1), characterized by the fact that: a water tank body (5) is fixed to one side of the top end of the fixed base (1); a turntable (15) is rotatable and connected to the other side of the upper end of the fixed base (1); a lifting assembly (14) is fixedly mounted on the top end of the turntable (15); a dust suppression platform (12) is permanently mounted on the upper end of the lifting assembly (14); a high-pressure nozzle (13) is permanently mounted on one side of the dust suppression platform (12); a shielding assembly (11) is attached mounted on the top end of the dust suppression platform (12); and a controller (6) is firmly mounted on the surface of the water tank body (5).

2. The dust suppression device for green building construction according to claim 1, characterized by: the shielding assembly (11) a lifting cylinder (111) and a longitudinal casing (112) includes; a movable end of the lifting cylinder (111) is fixedly attached with the lower end of the longitudinal casing (112); one end of the longitudinal casing (112) is sliding connected to a length plate (116); one end of the length plate (116) is fixed mounted with a shielding body (117); a spoiler plate (118) is fixed to the lower end of the shielding body (117); a first vertical plate (113) is fixed mounted on the upper end of the longitudinal casing (112); a second vertical plate (115) is fixedly mounted on the top end of the length plate (116); a displacement cylinder (114) is fixedly mounted to one side of the first vertical plate (113); a movable end of the displacement cylinder (114) is fixed to the side opposite the second vertical plate (115); and a fixed end of the lifting cylinder (111) is firmly connected to the dust suppression platform(12).

3. The dust suppression device for green building construction according to claim 1, characterized by: the lifting assembly (14) a height sleeve (142) and a height bar (143) includes; an upper end of the height casing (142) is fixedly connected to a lower end of the height rod (143); a screw rod (144) is rotatably connected to the lower end of the inner wall of the height casing (142); an upper end of the screw rod (144) is threaded to the middle section of the lower end of the height rod (143); a driven conical gear (146) is fixedly mounted on the connection between the screw rod (144) and the height sleeve (142); a driving conical gear (145) is rotatably connected to one side of the inner wall of the height casing (142); a The outside of the driving conical gear (145) is in contact with a outside of the driven conical gear (146); a waterproof motor (141) for the The drive of the conical gear (145) is fixedly mounted on the surface. of the height casing (142); a lower end of the height casing (142) is fixed connected to the turntable (15); and an upper end of the height rod (143) is connected to the dust suppression platform (12).

4. The dust suppression device for green building construction according to claim 1, characterized by: a miniature motor (21) being fixed in the fixed base (1); a drive gear (22) is fixedly mounted on an output shaft of the miniature motor (21); a driven gear (20) is fixedly mounted on the surface of the turntable (15); and a The outside of the drive gear (22) is in engagement with an outside of the driven gear (20).

5. The dust suppression device for green building construction according to claim 1, characterized by: a sealing plug (19) is clamped and mounted on the top end of the water tank body (5); an audible and visual alarm (18) is permanently mounted on the water tank body (5) on one side of the sealing plug (19); and a liquid level sensor (17) which protrudes outwards is fixedly mounted in the water tank body (5).

6. The dust suppression device for green building construction according to claim 1, characterized by the fact that: a pump body (7) is fixedly mounted on the surface of the water tank body (5); an inlet of the pump body (7) is permanently connected to a liquid inlet hose that extends into the interior of the water tank body (5); an outlet of the pump body (7) is permanently connected to a supply hose (8); one end of the supply hose (8) is securely mounted with a mounting bracket (10); one end of the mounting bracket (10) is firmly connected to the side facing the high-pressure nozzle (13); and an electromagnetic valve (9) is fixed to the middle section of the supply hose (8).

7. The dust suppression device for green building construction according to claim 1, characterized by: a liquid collection tank (16) being permanently mounted on the fixed base (1) at one side of the turntable (15).

8. The dust suppression device for green building construction according to claim 1, characterized by: swivel casters (2) are fixedly mounted on all four corners of the lower end of the fixed base (1); positioning assemblies (3) are fixed on both sides of the fixed base (1); a push plate (4) is fixedly mounted on the surface of the fixed base (1); each of the two positioning assemblies (3) includes a positioning housing (31) and a positioning platform (33); miniature cylinders (32) are fixed mounted on both sides of the top end of the inner wall of the positioning casing (31); movable ends of the two miniature cylinders (32) are respectively firmly attached to both sides of the upper end of the positioning platform (33); a multitude of ground pin blocks (34) is fixed to the lower end of the positioning platform (33); and one side of each of the two positioning sleeves (31) are fixed to the fixed base (1 ).

9. A procedure for the use of the dust suppression device for green building structure according to one of claims 1 through 8, characterized by the fact that it the the following steps include: Step 1. Device transfer: move the dust suppression device to a green construction site and fix the device in place; Step 2. Device adjustment: set the spray area of ​​the dust suppression device to the green construction site finished by adjusting the electromagnetic valve (9) and the shielding assembly (11 ); Step 3. Device spraying: activate the pump body (7) so that the high-pressure nozzle (13) sprays water for dust suppression treatment on the green construction site. FIG.1