A dust prevention device and method for construction

Abstract

The application discloses a dust-proof device and method for building construction, which comprises a fence arranged at the periphery of a construction site, wherein the fence is provided with an activating piece which is automatically started by wind power, and the activating piece is provided with a spraying piece for spraying water mist on both sides of the fence. In the application, the size of wind power is sensed by the fan blade of the activating piece, and the automatic lifting of the rotating column is realized through the sliding cooperation of the guide groove and the guide block, so that the additional power driving is not needed, the wind power automatic starting and the automatic resetting without wind are realized, the wind field condition matching the dust dispersion is matched, the invalid spraying is avoided, the activating pieces are evenly distributed on the fence, the wind power in the whole range can be sensed, the timely response of each position of the fence is ensured, the compact structure design is convenient to install, the fence is suitable for the periphery of various construction sites, and the stability is high and the service life is long.

Description

Technical Field

[0001] This invention relates to the field of dust control equipment technology, specifically a dust control device and method for building construction. Background Technology

[0002] During construction, earthwork excavation and material stockpiling generate large amounts of PM2.5 and PM10 dust, which not only pollutes the atmosphere and endangers the health of workers and surrounding residents, but also fails to meet the requirements of safe and civilized construction and environmental protection. Dust control has become an indispensable part of construction. Existing dust control devices for construction mainly include perimeter spraying and fog cannons. Among them, perimeter spraying has become the mainstream method of intercepting dust on the perimeter due to its convenient deployment and low cost. It uses spraying pipes and nozzles installed on the perimeter to form a water mist curtain with high-pressure water pumps to intercept the scattered dust.

[0003] Existing fencing sprinklers mostly use fixed time intervals or manual activation. Since the fencing sprinkler system is set at the outermost edge of the construction site to intercept dust blown by the wind, it is difficult for dust to spread to the fencing when there is no wind or a light breeze. Activating the sprinkler system can easily lead to waste of water and electricity, muddy site, and safety hazards. If it is not activated in time during strong winds, it will not be able to effectively intercept dust. Summary of the Invention

[0004] The purpose of this invention is to address the problems that existing construction site dust control systems often rely on fixed time intervals or manual activation. Since these systems are located at the outermost perimeter of the construction site and are used to intercept dust blown by the wind, dust is difficult to spread to the perimeter when there is no wind or a light breeze. Activating the spray system can easily lead to waste of water and electricity, muddy sites, and safety hazards. In strong winds, if the system is not activated in time, it cannot effectively intercept dust. This invention provides a dust control device and method for construction sites.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dust control device and method for construction sites, comprising: a fence set up around the construction site, wherein the fence is provided with an activation element that is automatically activated by wind, and the activation element is provided with a spraying element that sprays water mist on both sides of the fence. The activation component includes a fixing block fixedly connected to the top of the enclosure, a plug tube fixedly connected to the top of the fixing block, the plug tube opening facing upwards, a guide groove provided on the inner side of the plug tube, a guide block slidably connected in the guide groove, a rotating column slidably inserted in the plug tube, the rotating column being fixedly connected to the guide block, a fan blade fixedly connected to the side end of the rotating column, and a rotation groove provided at the top of the rotating column.

[0006] As a further embodiment of the present invention: a fixing sleeve is fixedly connected to the top of the enclosure, an infusion tube is provided at the top of the enclosure, and the infusion tube passes through the inside of the fixing sleeve. Multiple sets of fixing sleeves are provided and evenly distributed on the enclosure to fix the infusion tube. A water pump is provided at one end of the infusion tube. The output end of the water pump is fixedly connected to the infusion tube. The input end of the water pump is connected to a water source. The other end of the infusion tube is connected to the water source, so that water circulates between the water source, the water pump and the infusion tube.

[0007] As a further embodiment of the present invention: the fixing block is U-shaped, and two sets of fixing blocks are provided at the bottom of each set of inserts, and the two sets of fixing blocks are symmetrically distributed on both sides of the infusion tube; the guide block is cylindrical, and its diameter is consistent with the cross-sectional height of the guide groove; the rotating column is consistent with the inner diameter of the insert; two sets of fan blades are provided, symmetrically distributed on the side end of the rotating column; the rotating groove is U-shaped; and multiple sets of activation elements are provided, evenly distributed on the enclosure. As a further embodiment of the present invention: the guide groove is composed of a connecting groove, a first lifting groove, a second lifting groove, and a rotating groove. The connecting groove is C-shaped and located at the bottom. The first and second lifting grooves are spiral-shaped and have the same size and are distributed. The first and second lifting grooves are respectively connected to the two end faces of the connecting groove. The top ends of the first and second lifting grooves are connected to the bottom end of the rotating groove. The rotating groove is O-shaped.

[0008] As a further embodiment of the present invention: the spraying component includes a connecting pipe that is connected to the top of the infusion pipe, an inlet pipe that is connected to the top of the connecting pipe, and a spraying cylinder that is connected to the top of the inlet pipe. The spraying cylinder has its opening facing downwards and its top is closed. Multiple sets of the connecting pipe, the inlet pipe, and the spraying cylinder are provided. Two sets of connecting pipes, inlet pipes, and spraying cylinders are provided on both sides of each set of rotating columns. The distance between the two sets of spraying cylinders on both sides of each set of rotating columns is greater than the maximum width of the rotating column and the two sets of fan blades.

[0009] As a further embodiment of the present invention: a rotating shaft is rotatably connected inside the rotating groove. The rotating shaft is convex in shape. The top end of the rotating shaft passes through the rotating groove and is higher than the top end of the rotating column. A connecting plate is fixedly connected to the top end of the rotating shaft. A connecting rod is fixedly connected to the bottom end of the connecting plate. Two sets of connecting rods are provided and symmetrically distributed at the bottom end of the connecting plate. Each set of connecting rods passes through the top end of a set of spray cylinders and extends into the liquid inlet pipe.

[0010] As a further embodiment of the present invention: a sealing block is fixedly connected to the bottom end of the linkage rod, the height of the sealing block is greater than the height of the connecting pipe, an insert block is fixedly connected to the bottom end of the sealing block, the insert block is conical with the tip pointing downwards, the diameter of the top of the insert block is the same as that of the sealing block, the inner diameter of the connecting pipe is smaller than that of the spray cylinder, the inner diameter of the spray cylinder is smaller than that of the liquid inlet pipe, the diameter of the sealing block is the same as that of the inner diameter of the connecting pipe, and the spray cylinder has a liquid outlet hole through it on the side facing the rotating column, and multiple sets of liquid outlet holes are provided, evenly distributed in the area on the spray cylinder corresponding to the fan blade.

[0011] A method for preventing dust pollution during construction includes the following steps: S1. First, the device is in the initial state. The water pump fills the infusion tube with water and maintains a certain water pressure. At this time, the guide block of the activator is located in the connecting groove of the guide groove, the rotating column is at the lowest position of the insert, the connecting plate abuts against the top of the spray tube, the insert is inserted into the infusion tube, the sealing block is located in the connecting tube to seal the connection, and the spray is closed to avoid wasting water and electricity when there is no wind. S2. After that, when the wind force reaches the strength to blow the fan blades, the fan blades drive the rotating column to rotate. The guide block rotates and enters the lifting groove one or lifting groove two. It moves up along the spiral surface and drives the rotating column to rise. The connecting plate and connecting rod move up synchronously, so that the sealing block and the insert block are removed from the sealing position. Water enters the spray cylinder through the connecting pipe and the liquid inlet pipe. It is pressurized and ejected through the liquid outlet. It is dispersed into water mist by the rotating fan blades and forms a curtain on both sides of the enclosure to intercept dust. When the wind force is strong enough, the spraying continues. S3. Finally, when the wind force decreases, the guide block moves down along the lifting groove one or lifting groove two under the action of gravity, driving the rotating column to reset. The linkage rod drives the sealing block and the insert block to re-seal the connection. The spraying components stop working, the device returns to its initial state, and multiple sets of activation components and spraying components achieve full coverage of the enclosure. No manual intervention is required throughout the process, realizing automatic start-up when the wind is blowing and automatic shutdown when there is no wind.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the fan blades of the activator sense the wind force, and with the sliding cooperation of the guide groove and the guide block, the rotating column can be automatically raised and lowered without the need for additional power. It can achieve automatic start-up when there is wind and automatic reset when there is no wind, matching the wind field conditions for dust dissipation and avoiding ineffective spraying. At the same time, multiple sets of activators are evenly distributed on the fence, which can realize full-range wind sensing and ensure that all positions of the fence can respond in time. The structure is compact, easy to install, and suitable for the outer fence of various construction sites. It has strong stability and long service life. 2. In this invention, the start and stop of the spraying are precisely controlled by the sealing block and the insertion block of the spraying component. When there is no wind, the connecting pipe is effectively sealed to avoid water leakage and waste. When there is wind, the sealing is quickly released to achieve precise spraying. The liquid outlet of the spraying cylinder is pressurized to output water, which is dispersed into a mist by the rotating fan blades, expanding the spraying coverage area and forming a dense water mist curtain on both sides of the enclosure to effectively intercept dust. The two sets of spraying cylinders are symmetrically distributed to avoid interference with the fan blades and ensure stable operation of the device. At the same time, the circulating water circuit design further improves the water resource utilization rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the enclosure in this invention; Figure 3 This is a schematic diagram of the insert structure in this invention; Figure 4 This is a schematic diagram of the guide groove in this invention; Figure 5 This is a schematic diagram of the rotating column in this invention; Figure 6 This is a schematic diagram of the structure of the spray component in this invention; Figure 7 In this invention Figure 6 A schematic diagram of the structure at point A; Figure 8 This is a schematic diagram of the spray cylinder in this invention; Figure 9 In this invention Figure 8 A schematic diagram of the structure at point B.

[0014] In the diagram: 1. Enclosure; 11. Fixing sleeve; 12. Infusion tube; 2. Activation component; 21. Fixing block; 22. Insert tube; 23. Guide groove; 231. Connecting groove; 232. Lifting groove one; 233. Lifting groove two; 234. Rotating groove; 24. Guide block; 25. Rotating column; 26. Fan blade; 27. Rotating groove; 3. Spray component; 31. Connecting pipe; 32. Inlet pipe; 33. Spray cylinder; 34. Rotating shaft; 35. Connecting plate; 36. Connecting rod; 37. Sealing block; 38. Insert block; 39. Outlet hole. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0017] Reference Figure 1 In this embodiment of the invention, a construction dust control device and method includes: a fence 1 set outside the construction site, an activation element 2 that is automatically activated by wind force on the fence 1, and a spraying element 3 that sprays water mist on both sides of the fence 1 on the activation element 2.

[0018] Reference Figure 2 A fixing sleeve 11 is fixedly connected to the top of the enclosure 1. An infusion tube 12 is installed at the top of the enclosure 1, and the infusion tube 12 passes through the inside of the fixing sleeve 11. Multiple sets of fixing sleeves 11 are evenly distributed on the enclosure 1 to fix the infusion tube 12. A water pump is installed at one end of the infusion tube 12. The output end of the water pump is fixedly connected to the infusion tube 12, and the input end of the water pump is connected to a water source. The other end of the infusion tube 12 is connected to the water source, so that the water circulates between the water source, the water pump and the infusion tube 12.

[0019] The above solution is adopted: the enclosure 1 is set up outside the construction site to provide the installation foundation for the entire dust control device. The fixing sleeve 11 is used to firmly fix the infusion pipe 12 to ensure that the infusion pipe 12 does not shift or fall off during construction. The infusion pipe 12 is connected to the water pump and water source to form a circulating water circuit, which can not only continuously provide water source for the spraying component 3, but also realize the recycling of water resources and avoid water waste. At the same time, the water pump provides stable water pressure to ensure the subsequent spraying effect.

[0020] Reference Figures 3 to 5The activation component 2 includes a fixing block 21 fixedly connected to the top of the enclosure 1. The fixing block 21 is U-shaped, and a tube 22 is fixedly connected to the top of the fixing block 21. The tube 22 has its opening facing upward. Two sets of fixing blocks 21 are provided at the bottom of each set of tubes 22, and the two sets of fixing blocks 21 are symmetrically distributed on both sides of the infusion tube 12. A guide groove 23 is opened on the inner side of the tube 22, and a guide block 24 is slidably connected in the guide groove 23. The guide block 24 is cylindrical, and its diameter is consistent with the cross-sectional height of the guide groove 23. The tube 24 slides inside the tube 22. A rotating column 25 is inserted, and the inner diameter of the rotating column 25 is the same as that of the insert 22. The rotating column 25 is fixedly connected to the guide block 24. A fan blade 26 is fixedly connected to the side end of the rotating column 25. Two sets of fan blades 26 are provided, symmetrically distributed on the side end of the rotating column 25. A rotating groove 27 is opened at the top of the rotating column 25. The rotating groove 27 is convex in shape. Multiple sets of activation components 2 are provided, evenly distributed on the enclosure 1. The guide groove 23 is composed of a connecting groove 231, a first lifting groove 232, a second lifting groove 233, and a rotating groove 234. The connecting groove 231 is C-shaped and located at the bottom. The first lifting groove 232 and the second lifting groove 233 are spiral-shaped and of the same size, distributed accordingly. The first lifting groove 232 and the second lifting groove 233 are connected to the two end faces of the connecting groove 231 respectively. The tops of the first lifting groove 232 and the second lifting groove 233 are connected to the bottom of the rotating groove 234, which is O-shaped. When the wind blows the fan blade 26, causing it to rotate around the axis of the rotating column 25, the guide block 24, initially located in the connecting groove 231, enters the first lifting groove 232 or the second lifting groove 233 in the direction of rotation and moves upward along the spiral surface of the first lifting groove 232 or the second lifting groove 233 until the guide block 24... Entering the rotating groove 234, the guide block 24 rotates in an O-shape around the axis of the rotating column 25 within the rotating groove 234, ultimately causing the rotating column 25 to move upward within the insert 22. Since the bottom end of the rotating groove 234 is connected to the first lifting groove 232 and the second lifting groove 233 respectively, when the wind force is strong enough, the guide block 24 can pass through the connection points between the bottom end of the rotating groove 234 and the first lifting groove 232 and the second lifting groove 233 respectively under the inertia generated by the movement of the guide block 24. When the wind force decreases, when the guide block 24 moves to the connection point between the bottom end of the rotating groove 234 and the first lifting groove 232 or the second lifting groove 233, the guide block 24 enters the first lifting groove 232 or the second lifting groove 233 under the action of gravity and moves downward to reset.

[0021] The above scheme is adopted: the plug 22 is firmly fixed to the top of the enclosure 1 by the fixing block 21 of the activation component 2. The two sets of symmetrically distributed fixing blocks 21 improve the installation stability of the plug 22. The connecting groove 231, lifting groove one 232, lifting groove two 233 and rotating groove 234 of the guide groove 23 cooperate with each other to make the guide block 24 rotate with the fan blade 26 to achieve lifting and resetting. The rotating column 25 is fixedly connected to the guide block 24 and can achieve lifting and lowering synchronously without the need for additional power drive, realizing wind self-starting. It can also automatically control the lifting and lowering state of the rotating column 25 according to the wind force, accurately match the wind field conditions for dust dispersion. The structure is reasonable and the operation is convenient.

[0022] Reference Figures 6 to 9The spray component 3 includes a connecting pipe 31 that is connected to the top end of the infusion pipe 12. An inlet pipe 32 is connected to the top end of the connecting pipe 31, and a spray cylinder 33 is connected to the top end of the inlet pipe 32. The spray cylinder 33 has its opening facing downwards and its top end is closed. Multiple sets of connecting pipes 31, inlet pipes 32, and spray cylinders 33 are provided. Each set of rotating columns 25 has two sets of connecting pipes 31, inlet pipes 32, and spray cylinders 33 on both sides. The distance between the two sets of spray cylinders 33 on both sides of each set of rotating columns 25 is greater than the maximum width of the rotating column 25 and the two sets of fan blades 26. A rotating shaft 34 is rotatably connected within the rotating groove 27. The rotating shaft 34 is... The rotating shaft 34 is convex in shape, with its top end penetrating the rotating groove 27. The top end of the rotating shaft 34 is higher than the top end of the rotating column 25. A connecting plate 35 is fixedly connected to the top end of the rotating shaft 34, and a connecting rod 36 is fixedly connected to the bottom end of the connecting plate 35. Two sets of connecting rods 36 are symmetrically distributed at the bottom end of the connecting plate 35. Each set of connecting rods 36 penetrates the top end of a set of spray cylinders 33 and extends into the liquid inlet pipe 32. A sealing block 37 is fixedly connected to the bottom end of the connecting rod 36. The height of the sealing block 37 is greater than the height of the connecting pipe 31. An insert block 38 is fixedly connected to the bottom end of the sealing block 37. The insert block 38 is conical with its tip pointing downwards. The diameter of the top end of the insert block 38 is similar to that of the sealing block 37. Similarly, the inner diameter of the connecting pipe 31 is smaller than that of the spray cylinder 33, and the inner diameter of the spray cylinder 33 is smaller than that of the inlet pipe 32. The diameter of the sealing block 37 is the same as that of the connecting pipe 31. The spray cylinder 33 has a through-hole 39 on the side facing the rotating column 25, and multiple sets of the outlet holes 39 are evenly distributed in the area on the spray cylinder 33 corresponding to the fan blade 26. In the initial state, the bottom end of the connecting plate 35 abuts against the top end of the spray cylinder 33, so that the insert block 38 is inserted into the infusion pipe 12. At this time, the sealing block 37 is located in the connecting pipe 31, sealing the connection between the connecting pipe 31 and the infusion pipe 12. When the rotating column 25 moves upward, the connecting plate 35 drives the connecting rod. 36 moves upward synchronously. When the guide block 24 moves into the rotating groove 234, the linkage rod 36 moves to the limit position. At this time, the insert block 38 enters the liquid inlet pipe 32. At this time, the liquid flows upward into the spray cylinder 33 and is discharged from the liquid outlet 39. Due to the water pressure brought by the water pump, and because the diameter of the spray cylinder 33 is larger than the liquid outlet 39, the amount of water entering the spray cylinder 33 is greater than the discharge amount of the multiple sets of liquid outlets 39. As a result, the water is pressurized and ejected through the small hole of the liquid outlet 39 and comes into contact with the rotating fan blade 26. The rotating fan blade 26 disperses the ejected water flow into a mist and diffuses it to both sides through the wind force generated by the rotating fan blade 26.

[0023] The above scheme is adopted: the connecting pipe 31 and the inlet pipe 32 of the spray component 3 are connected to the delivery pipe 12 to achieve smooth water supply. The sealing block 37 is adapted to the connecting pipe 31 and can accurately seal the connection between the connecting pipe 31 and the delivery pipe 12 to avoid water leakage when there is no wind. The insert block 38 has a conical design, which makes it easy to insert and remove from the delivery pipe 12 and improves the smoothness of start-up and shutdown. The outlet holes 39 of the spray cylinder 33 are evenly distributed, and together with the rotating fan blades 26, the pressurized water flow is dispersed into a mist, expanding the spray coverage area and ensuring that a uniform water mist curtain is formed on both sides of the enclosure 1 to effectively intercept dust. At the same time, the two sets of spray cylinders 33 are symmetrically distributed to avoid interference with the fan blades 26 and ensure the stable operation of the device.

[0024] The working principle of this invention is as follows: In the initial state, the water pump fills the infusion pipe 12 with water and maintains a certain water pressure. At this time, the guide block 24 of the activator 2 is located in the connecting groove 231 of the guide groove 23, the rotating column 25 is at the lowest position in the insert 22, the bottom end of the connecting plate 35 abuts against the top end of the spray cylinder 33, the insert block 38 is inserted into the infusion pipe 12, and the sealing block 37 is located in the connecting pipe 31 to seal the connection between the connecting pipe 31 and the infusion pipe 12. Water cannot enter the connecting pipe 31 and the spray cylinder 33, and the spraying device 3 is in a closed state, avoiding the waste of water and electricity caused by ineffective spraying when there is no wind. When there is wind at the construction site, and the wind force is strong enough to blow the fan blades 26, the wind will drive the two sets of fan blades 26 on the side of the rotating column 25 to rotate. When the axis of the rotating column 25 rotates, the fan blade 26 rotates, causing the rotating column 25 to rotate synchronously. Since the rotating column 25 is fixedly connected to the guide block 24, the guide block 24 will rotate within the connecting groove 231 as the rotating column 25 rotates. Depending on the wind direction and rotation direction, the guide block 24 will enter either the first lifting groove 232 or the second lifting groove 233 of the guide groove 23. Since both the first lifting groove 232 and the second lifting groove 233 are spiral-shaped, the guide block 24 will move upward along the spiral surface while rotating, thereby causing the rotating column 25 to move upward synchronously within the insert 22. When the rotating column 25 moves upward, the rotating shaft 34 within the rotating groove 27 at its top will move upward synchronously. The rotating shaft 34 drives the connecting plate 35 at the top to move upward, and the connecting plate 35 drives the two sets of connecting rods 36 at the bottom to move upward synchronously. When rod 36 moves upward, it will drive the sealing block 37 and insert block 38 at the bottom to move upward together. As the rotating column 25 continues to move upward, the guide block 24 continues to move upward along the spiral surface of the first lifting groove 232 or the second lifting groove 233 until the guide block 24 enters the rotating groove 234. At this time, the rotating column 25 reaches the limit position of upward movement, and the linkage rod 36 also moves to the limit position in sync. The insert block 38 completely disengages from the infusion tube 12 and enters the inlet tube 32. The sealing block 37 also disengages from the connection between the connecting tube 31 and the infusion tube 12, releasing the seal on the connecting tube 31. During this process, due to the stable water pressure in the infusion tube 12, water will enter the inlet tube 32 through the connecting tube 31, and then flow into the spray cylinder 33 from the inlet tube 32. Since the inner diameter of the spray cylinder 33 is larger than that of the connecting tube 31, Furthermore, the spray nozzles 39 are provided in multiple sets with small diameters. The amount of water entering the spray cylinder 33 is greater than the discharge capacity of the multiple sets of spray nozzles 39, creating a certain pressure inside the spray cylinder 33. Under pressure, the water is ejected through the spray nozzles 39. The ejected water flow comes into contact with the rotating fan blades 26. The rotating fan blades 26 fully disperse the pressurized water flow, forming a fine water mist. At the same time, the wind force generated by the rotation of the fan blades 26 diffuses the water mist to both sides of the enclosure 1, forming a uniform and dense water mist curtain on the inner and outer sides of the enclosure 1. This intercepts the dust blown by the wind and prevents the dust from escaping to the outside of the construction site, achieving the effect of dust prevention. When the wind force is strong enough, the guide block 24 rotates in an O-shape around the axis of the rotating column 25 in the rotating groove 234. Under the action of inertia,The guide block 24 can smoothly pass through the connection between the bottom end of the rotating groove 234 and the first lifting groove 232 or the second lifting groove 233, maintaining the upward state of the rotating column 25. The spray component 3 continuously sprays to ensure the dust interception effect. When the wind force decreases, the rotation speed of the fan blade 26 slows down, and the rotational inertia of the guide block 24 in the rotating groove 234 decreases. When the guide block 24 moves to the connection between the bottom end of the rotating groove 234 and the first lifting groove 232 or the second lifting groove 233, under the action of its own weight and the weight of the rotating column 25, fan blade 26 and other components, the guide block 24 will enter the first lifting groove 232 or the second lifting groove 233 and move along the spiral surface. The downward movement causes the rotating column 25 to move down and reset synchronously. As the rotating column 25 moves down, the rotating shaft 34 drives the connecting plate 35 and connecting rod 36 to move down synchronously. The sealing block 37 re-enters the connecting pipe 31, sealing the connection between the connecting pipe 31 and the infusion pipe 12. The insert block 38 re-inserts into the infusion pipe 12, further enhancing the sealing effect. Water can no longer enter the connecting pipe 31 and the spray cylinder 33, and the spray element 3 stops spraying. The device returns to its initial state. Multiple sets of activators 2 and spray elements 3 are evenly distributed on the enclosure 1, enabling full-range water mist coverage of the enclosure 1. This ensures that the spraying can be activated promptly regardless of the wind direction blowing towards the enclosure 1. This system comprehensively intercepts dust without manual intervention, automatically starting when wind is blowing and automatically shutting off when there is no wind. This ensures effective dust control while conserving water and electricity, making it suitable for actual construction conditions. The fan blades 26 of the activation element 2 sense wind speed, and the sliding engagement of the guide groove 23 and guide block 24 enables the automatic raising and lowering of the rotating column 25 without additional power. This automatic start-up when wind is blowing and automatic reset when there is no wind matches the wind conditions for dust dispersion, avoiding ineffective spraying. Multiple sets of activation elements 2 are evenly distributed on the enclosure 1, enabling full-range wind sensing and ensuring timely response at all locations on the enclosure 1. The compact structural design ensures safety. Easy to install, adaptable to various construction site perimeter fencing 1, highly stable and long-lasting. Spraying is precisely controlled by the sealing block 37 and insert block 38 of the spray unit 3. In windless conditions, the connecting pipe 31 is effectively sealed to prevent water leakage and waste; in windy conditions, the seal is quickly released for precise spraying. The outlet 39 of the spray cylinder 33 pressurizes water, which, together with the rotating fan blades 26, disperses the water flow into a mist, expanding the spray coverage area and forming a dense water mist curtain on both sides of the fencing 1, effectively intercepting dust. The two sets of spray cylinders 33 are symmetrically distributed to avoid interference with the fan blades 26, ensuring stable operation of the device. Simultaneously, the circulating water system design further improves water resource utilization.

[0025] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dust control device for construction sites, comprising: The enclosure (1) is arranged around the construction site, and is characterized in that an activation member (2) activated by wind force is arranged on the enclosure (1), and a spraying member (3) for spraying water mist on both sides of the enclosure (1) is arranged on the activation member (2). The activation member (2) includes a fixing block (21) fixedly connected to the top end of the enclosure (1). A socket (22) is fixedly connected to the top end of the fixing block (21). The socket (22) has an upward opening. A guiding groove (23) is formed inside the socket (22). A guiding block (24) is slidably connected in the guiding groove (23). A rotating column (25) is slidably inserted into the socket (22). The rotating column (25) is fixedly connected to the guiding block (24). A fan blade (26) is fixedly connected to the side end of the rotating column (25). A rotating groove (27) is formed at the top end of the rotating column (25).

2. The dust control device for construction sites according to claim 1, characterized in that, A fixing sleeve (11) is fixedly connected to the top end of the enclosure (1). An infusion pipe (12) is arranged at the top end of the enclosure (1), and the infusion pipe (12) penetrates through the inside of the fixing sleeve (11). Multiple groups of fixing sleeves (11) are provided and evenly distributed on the enclosure (1) to fix the infusion pipe (12). One end of the infusion pipe (12) is provided with a water pump. The output end of the water pump is fixedly connected to the infusion pipe (12). The input end of the water pump is connected to a water source. The other end of the infusion pipe (12) is communicated with the water source, so that water circulates among the water source, the water pump and the infusion pipe (12).

3. A dust control device for construction sites according to claim 2, characterized in that, The fixing block (21) is in a C shape. Two groups of fixing blocks (21) are arranged at the bottom end of each socket (22), and the two groups of fixing blocks (21) are symmetrically distributed on both sides of the infusion pipe (12). The guiding block (24) is cylindrical, and its diameter is the same as the sectional height of the guiding groove (23). The diameter of the rotating column (25) is the same as the inner diameter of the socket (22). Two groups of fan blades (26) are provided and symmetrically distributed on the side end of the rotating column (25). The rotating groove (27) is in a convex shape. Multiple groups of activation members (2) are provided and evenly distributed on the enclosure (1).

4. A dust control device for construction sites according to claim 3, characterized in that, The guiding groove (23) is composed of a connecting groove (231), a first lifting groove (232), a second lifting groove (233) and a rotating groove (234). The connecting groove (231) is in a C shape and is located at the bottommost. The first lifting groove (232) and the second lifting groove (233) are spiral, and the first lifting groove (232) and the second lifting groove (233) have the same size and are distributed. The first lifting groove (232) and the second lifting groove (233) are respectively communicated with the two side end faces of the connecting groove (231). The top ends of the first lifting groove (232) and the second lifting groove (233) are connected to the bottom end of the rotating groove (234) in a through manner. The rotating groove (234) is in an O shape.

5. A dust control device for construction sites according to claim 4, characterized in that, The spray component (3) includes a connecting pipe (31) that is connected to the top of the infusion pipe (12). The top of the connecting pipe (31) is connected to an inlet pipe (32). The top of the inlet pipe (32) is connected to a spray cylinder (33). The spray cylinder (33) has its opening facing downwards and its top is closed. The connecting pipe (31), the inlet pipe (32), and the spray cylinder (33) are all provided in multiple sets. Each set of rotating column (25) has two sets of connecting pipe (31), inlet pipe (32), and spray cylinder (33) on both sides. The distance between the two sets of spray cylinders (33) on both sides of each set of rotating column (25) is greater than the maximum width of the rotating column (25) and the two sets of fan blades (26).

6. A dust control device for construction sites according to claim 5, characterized in that, A rotating shaft (34) is rotatably connected inside the rotating groove (27). The rotating shaft (34) is convex in shape. The top end of the rotating shaft (34) passes through the rotating groove (27). The top end of the rotating shaft (34) is higher than the top end of the rotating column (25). A connecting plate (35) is fixedly connected to the top end of the rotating shaft (34). A connecting rod (36) is fixedly connected to the bottom end of the connecting plate (35). There are two sets of connecting rods (36), which are symmetrically distributed at the bottom end of the connecting plate (35). Each set of connecting rods (36) passes through the top end of a set of spray cylinders (33) and extends into the liquid inlet pipe (32).

7. A dust control device for construction sites according to claim 6, characterized in that, The bottom end of the linkage rod (36) is fixedly connected to a sealing block (37). The height of the sealing block (37) is greater than the height of the connecting pipe (31). The bottom end of the sealing block (37) is fixedly connected to an insert block (38). The insert block (38) is conical with its tip pointing downwards. The diameter of the top of the insert block (38) is the same as that of the sealing block (37). The inner diameter of the connecting pipe (31) is smaller than that of the spray cylinder (33). The inner diameter of the spray cylinder (33) is smaller than that of the inlet pipe (32). The diameter of the sealing block (37) is the same as that of the connecting pipe (31). The spray cylinder (33) has a liquid outlet hole (39) through it on the side facing the rotating column (25). There are multiple sets of liquid outlet holes (39), which are evenly distributed in the area on the spray cylinder (33) corresponding to the fan blade (26).

8. A method for preventing dust pollution during construction according to any one of claims 1-7, characterized in that, Includes the following steps: S1. First, the device is in the initial state. The water pump fills the infusion pipe (12) with water and maintains a certain water pressure. At this time, the guide block (24) of the activation element (2) is located in the connecting groove (231) of the guide groove (23), the rotating column (25) is at the lowest position of the insert (22), the connecting plate (35) abuts against the top of the spray cylinder (33), the insert block (38) is inserted into the infusion pipe (12), the sealing block (37) is located in the connecting pipe (31) to seal the connection, and the spray element (3) is closed to avoid wasting water resources and electricity when there is no wind. S2. After that, when the wind force reaches the strength to blow the fan blades (26), the fan blades (26) drive the rotating column (25) to rotate, and the guide block (24) enters the lifting groove one (232) or the lifting groove two (233) with the rotation, and moves up along the spiral surface to drive the rotating column (25) to rise. The connecting plate (35) and the connecting rod (36) move up synchronously, so that the sealing block (37) and the insert block (38) are removed from the sealing position. Water enters the spray cylinder (33) through the connecting pipe (31) and the liquid inlet pipe (32), and is pressurized and ejected through the liquid outlet (39). It is dispersed into water mist by the rotating fan blades (26) and forms a curtain on both sides of the enclosure (1) to intercept dust. When the wind force is strong enough, the spraying continues. S3. Finally, when the wind force decreases, the guide block (24) moves down along the first lifting groove (232) or the second lifting groove (233) under the action of gravity, driving the rotating column (25) to reset. The connecting rod (36) drives the sealing block (37) and the insert block (38) to re-seal the connection. The spray component (3) stops working, the device returns to its initial state, and multiple sets of activation components (2) and spray components (3) achieve full coverage of the enclosure (1). No manual intervention is required throughout the process, realizing wind-driven self-start and windless self-shutdown.

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