Dust falling device for construction engineering

Abstract

This invention provides a dust suppression device for construction projects, relating to the field of air pollution control technology. The dust suppression device for construction projects includes: a spraying mechanism comprising water pipes, atomizing nozzles, and rotary joints. Multiple sections of water pipe are arranged along the upper edge of the side of the construction site facing the fence, with adjacent sections rotatably connected via rotary joints. Each section of water pipe is equipped with multiple atomizing nozzles. A wind-driven mechanism is also included, with multiple nozzles installed on the top surface of the fence. This wind-driven mechanism can rotate from a vertical position to the side of the fence facing outwards, thereby causing the atomizing nozzles on the corresponding water pipes to tilt upwards. In this application, when wind blows from the outside, the atomizing nozzles remain facing inwards to settle dust; when wind blows from the inside, the atomizing nozzles automatically tilt upwards, forming an upward spray at the top of the fence to intercept the drifting dust.

Description

Technical Field

[0001] This invention relates to the field of air pollution control technology, and in particular to a dust suppression device for construction engineering. Background Technology

[0002] At construction sites, fencing serves as the primary facility for isolating the construction area from the external environment, and a dust suppression spray system is typically installed on the inner side of its top. Existing fencing spray systems are mostly fixed structures, consisting of one or more water supply pipes arranged along the length of the fencing, with multiple atomizing nozzles installed at equal intervals on the pipes. All nozzles spray in a fixed direction towards the inside of the construction site. During operation, a water pump pressurizes water and sprays it through the nozzles, forming a water mist to settle the dust generated during construction. This fixed-direction spraying method is effective in dust suppression under common conditions where the wind direction is from the outside in, as the wind blows dust towards the inside of the fencing, and the water mist effectively captures and traps the accumulated dust.

[0003] However, the wind direction at actual construction sites is not constant. When the wind blows from the inside out (i.e., from inside the construction site towards the enclosure), dust will move rapidly towards the top of the enclosure with the airflow and even roll over it, causing dust to spill out and pollute the surrounding environment. At this time, the water mist sprayed by the nozzles fixed inward is sprayed against the wind. The droplets are blocked by the strong airflow and cannot reach the top of the enclosure, resulting in a sharp decrease in dust suppression efficiency. At the same time, the water mist may also be blown back into the construction site or even wet the workers. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dust suppression device for construction engineering.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A dust suppression device for construction projects, comprising: The spraying mechanism includes water pipes, atomizing nozzles and rotary joints. Multiple sections of water pipes are arranged along the upper edge of the side of the fence facing the construction site. Adjacent sections of water pipes are connected by a rotary joint. Multiple atomizing nozzles are installed on each section of water pipe. Multiple wind-driven mechanisms are installed on the top surface of the fence. The wind-driven mechanisms can rotate from a vertical position to the side of the fence facing outwards from the construction site, thereby causing multiple atomizing nozzles on the corresponding water pipes to tilt upwards.

[0006] Preferably, the spraying mechanism also includes a dust suppressant pipe, which is connected to the upper edge of the side of the multiple columns facing the construction site. The dust suppressant pipe is connected to the atomizing nozzle. As the atomizing nozzle gradually tilts upward, the dust suppressant pipe gradually increases the flow rate of the liquid agent supplied into the atomizing nozzle.

[0007] Preferably, the atomizing nozzle includes a housing, a vortex vane, and a vortex chamber. The vortex chamber is located inside the housing near the nozzle end, and the vortex vane is slidably located inside the vortex chamber. When the atomizing nozzle gradually tilts upward, the vortex vane moves away from the nozzle of the housing.

[0008] Preferably, a gravity drive mechanism is provided at the connection between the water pipe and the atomizing nozzle, and a traction mechanism is provided in the vortex chamber. The gravity drive mechanism and the traction mechanism are connected in a drive connection. When the atomizing nozzle gradually tilts up, the gravity drive mechanism drives the vortex vane to move away from the nozzle of the housing through the traction mechanism.

[0009] Preferably, the end of the atomizing nozzle furthest from the vortex plate is set as a water outlet channel. The water outlet channel is funnel-shaped, and the small diameter of the water outlet channel is connected to a water pipe. The housing is provided with a liquid outlet channel. One end of the liquid outlet channel is connected to the water outlet channel, and the other end of the liquid outlet channel is connected to one end of a flexible hose. The other end of the flexible hose is connected to the dust suppressant pipe.

[0010] Preferably, the gravity drive mechanism includes a slider, a guide shaft, a spring, and a positioning frame. The positioning frame is connected to the inner wall of the water pipe, the guide shaft is connected to the positioning frame, the guide shaft is coaxially arranged with the water outlet channel, the slider is slidably connected to the guide shaft, the spring is sleeved on the guide shaft, and the two ends of the spring abut against the positioning frame and the slider, respectively.

[0011] Preferably, the circumferential surface of the slider forms a continuous stepped structure that matches the inclined surface of the water outlet channel. When the atomizing nozzle gradually tilts upward, the slider slides downward along the guide shaft at an angle, so that the corresponding stepped surface of the continuous stepped structure gradually approaches the outlet of the liquid outlet channel.

[0012] Preferably, the traction mechanism includes a pull wire and an elastic wire. One end of the pull wire is connected to the slider, and the other end of the pull wire is connected to one side of the vortex plate. One end of the elastic wire is connected to the other side of the vortex plate, and the other end of the elastic wire is connected to the inner wall of the vortex chamber.

[0013] Preferably, the wind-driven mechanism includes a wind deflector, an elastic rope, a pull rope, and a positioning seat. The positioning seat is connected to the top surface of the column, and a blocking part is provided on the side of the positioning seat facing the construction site. The bottom end of the wind deflector is rotatably connected to the positioning seat. One end of the elastic rope and the pull rope are both connected to the wind deflector, the other end of the elastic rope is connected to the top surface of the column, and the other end of the pull rope is connected to the corresponding atomizing nozzle.

[0014] Preferably, the windshield includes a frame and a canvas, with the bottom end of the frame rotatably connected to a positioning seat and the canvas connected to the middle of the frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The wind-driven mechanism can deflect towards the side of the construction site enclosure facing outwards under external wind force. The mechanism is mechanically connected to a corresponding section of water pipe. When natural wind blows towards the enclosure from outside the site, the wind-driven mechanism is pushed by wind pressure, rotating outwards from a vertical position. This rotation causes the connected water pipe to tilt upwards around the rotating joint, thus changing the spray direction of all atomizing nozzles fixed to the water pipe from horizontal inwards to an upward tilt. Conversely, when there is no wind or the wind direction is reversed, the wind-driven mechanism returns to a vertical position, the water pipe resets, and the atomizing nozzles return to horizontal inwards spraying. When wind comes from the outside, the atomizing nozzles remain inwards to settle dust; when wind comes from the inside, the atomizing nozzles automatically tilt upwards, forming an upward spray at the top of the enclosure to intercept any dust that rolls over. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the dust suppression device for construction engineering proposed in this invention; Figure 2 This is a schematic diagram of the initial state of the atomizing nozzle in the dust suppression device for construction engineering proposed in this invention. Figure 3 for Figure 1 Enlarged view of the structure at point A in the image; Figure 4 This is a schematic diagram of the installation of the rotary joint in the dust suppression device for construction engineering proposed in this invention; Figure 5 This is a schematic diagram of the initial structure of the atomizing nozzle in the dust suppression device for construction engineering proposed in this invention. Figure 6 for Figure 5 Enlarged view of the structure at point B in the image; Figure 7 This is a schematic diagram showing the state of the atomizing nozzle in the dust suppression device for construction engineering proposed in this invention when it is tilted upwards. Figure 8 This is a schematic diagram of the structure of the atomizing nozzle in the dust suppression device for construction engineering proposed in this invention when it is tilted upwards. Figure 9 for Figure 8 Enlarged view of the structure at point C.

[0017] In the diagram: 1. Spraying mechanism; 11. Water pipe; 12. Atomizing nozzle; 121. Housing; 122. Vortex vane; 123. Vortex chamber; 124. Water outlet channel; 125. Liquid outlet channel; 13. Dust suppressant pipe; 14. Rotary joint; 2. Wind-driven mechanism; 21. Wind baffle; 211. Frame; 212. Canvas; 22. Elastic rope; 23. Pull rope; 24. Positioning seat; 3. Gravity-driven mechanism; 31. Slider; 32. Guide shaft; 33. Spring; 34. Positioning frame; 4. Traction mechanism; 41. Pull line; 42. Elastic line; 100. Enclosure; 110. Column. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] In the description of this specification, the references to terms such as "embodiment," "one embodiment," "some implementations," "exemplary," and "one implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0023] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0024] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 This invention provides a dust suppression device for construction projects, comprising: The spraying mechanism 1 includes a water pipe 11, an atomizing nozzle 12 and a rotary joint 14. Multiple sections of water pipe 11 are arranged along the upper edge of the side of the enclosure 100 facing the construction site. Adjacent sections of water pipe 11 are rotatably connected by a rotary joint 14. Multiple atomizing nozzles 12 are installed on each section of water pipe 11. Multiple wind-driven mechanisms 2 are installed on the top surface of the enclosure 100. The wind-driven mechanism 2 can rotate from a vertical position to the side of the enclosure 100 facing outward from the construction site, so as to drive multiple atomizing nozzles 12 on the corresponding water pipe 11 to tilt upward.

[0025] In this optional embodiment, multiple water pipe sections 11 are continuously arranged along the upper edge of the side of the enclosure 100 facing the construction site. Adjacent water pipe sections 11 are rotatably connected by a rotary joint 14, allowing each water pipe section 11 to independently swing around the axis of the rotary joint 14 within a certain angle range. Multiple atomizing nozzles 12 are fixedly installed along the length of the outer wall of each water pipe section 11. The spray direction of the atomizing nozzles 12 initially faces the inside of the construction site. Multiple wind-driven mechanisms 2 are provided, respectively fixed to the top surface of the enclosure 100 and connected to each water pipe section 11. Correspondingly, each wind-driven mechanism 2 has a vertical orientation and can deflect towards the side of the enclosure 100 facing outwards from the construction site under the action of external wind. The wind-driven mechanism 2 is mechanically connected to the corresponding section of the water pipe 11. When natural wind blows from outside the construction site towards the enclosure 100, the wind-driven mechanism 2 is pushed by wind pressure, rotating outwards from its vertical orientation. This rotation causes the connected water pipe 11 to tilt upwards around the rotary joint 14, thereby changing the spray direction of all the atomizing nozzles 12 fixed on the water pipe 11 from horizontal inwards to upwards. Conversely, when there is no wind or the wind direction is reversed, the wind-driven mechanism 2 returns to its vertical orientation, the water pipe 11 resets, and the atomizing nozzles 12 return to horizontal inwards spraying. When wind comes from the outside, the atomizing nozzles 12 remain inwards to settle dust; when wind comes from the inside, the atomizing nozzles 12 automatically tilt upwards, forming an upward spray at the top of the enclosure 100 to intercept the swirling dust.

[0026] Furthermore, the spraying mechanism 1 also includes a dust suppressant pipe 13, which is connected to the upper edge of the side of the multiple columns 110 facing the construction site. The dust suppressant pipe 13 is connected to the atomizing nozzle 12. When the atomizing nozzle 12 is gradually raised, the dust suppressant pipe 13 gradually increases the flow rate of the liquid agent supplied into the atomizing nozzle 12.

[0027] In this optional embodiment, as the atomizing nozzle 12 gradually tilts upward with the water pipe 11, the flow rate of the dust suppressant supplied from the dust suppressant pipe 13 to the atomizing nozzle 12 increases. Specifically, the greater the tilt angle, the greater the flow rate. When the atomizing nozzle 12 is in a horizontal position, the flow rate is minimal or even zero. When the wind direction is from the inside out, causing the atomizing nozzle 12 to spray upward, the risk of dust overflow is high. At this time, a stronger dust capture capability is required. Adding dust suppressant can significantly improve the wetting and adhesion efficiency of water mist to fine particles. When the atomizing nozzle 12 is horizontally facing inward, the dust stays in the low-speed zone inside the enclosure 100 for a long time. Pure water mist is already efficient enough. Reducing or stopping the addition of chemicals can save costs. This achieves automatic matching between the amount of dust suppressant added and the dust suppression requirements, ensuring the dust suppression effect under harsh working conditions and avoiding unnecessary waste of chemicals.

[0028] Optionally, the atomizing nozzle 12 includes a housing 121, a vortex vane 122, and a vortex chamber 123. The vortex chamber 123 is located inside the housing 121 near the nozzle end. The vortex vane 122 is slidably located inside the vortex chamber 123. When the atomizing nozzle 12 gradually tilts upward, the vortex vane 122 moves away from the nozzle of the housing 121.

[0029] In this optional embodiment, the vortex chamber 123 is disposed within the housing 121 near the nozzle end, and is a cylindrical or conical cavity. The vortex vane 122 is slidably installed inside the vortex chamber 123, with its outer edge in sealed contact with the inner wall of the vortex chamber 123, and can reciprocate axially. The vortex vane 122 has a tangential inlet or a spiral groove to generate rotational motion in the incoming liquid. As the atomizing nozzle 12 gradually tilts upward with the water pipe 11, the vortex vane 122 can move away from the nozzle of the housing 121, thereby increasing the axial distance between the vortex vane 122 and the nozzle. According to the principle of pressure swirling atomization, the greater the depth of the vortex chamber 123, the longer the rotational stroke of the liquid within the vortex chamber 123, and the higher the swirling intensity, thus producing finer droplets and a wider spray cone angle, thereby forming a large-area fine mist curtain at the top of the enclosure 100, improving the ability to intercept fine particulate dust.

[0030] Furthermore, a gravity drive mechanism 3 is provided at the connection between the water pipe 11 and the atomizing nozzle 12, and a traction mechanism 4 is provided in the vortex chamber 123. The gravity drive mechanism 3 and the traction mechanism 4 are connected in a drive connection. When the atomizing nozzle 12 gradually tilts up, the gravity drive mechanism 3 drives the vortex plate 122 to move away from the nozzle of the housing 121 through the traction mechanism 4.

[0031] Specifically, a gravity drive mechanism 3 is provided inside the connection between the water pipe 11 and the atomizing nozzle 12. This mechanism uses gravity or inertial force to sense the tilt angle of the nozzle. A traction mechanism 4 is provided inside the vortex chamber 123, one end of which is connected to the vortex plate 122.

[0032] Furthermore, the end of the atomizing nozzle 12 away from the vortex plate 122 is set as a water outlet channel 124. The water outlet channel 124 is funnel-shaped, and the small diameter of the water outlet channel 124 is connected to the water pipe 11. The housing 121 is provided with a liquid outlet channel 125. One end of the liquid outlet channel 125 is connected to the water outlet channel 124, and the other end of the liquid outlet channel 125 is connected to one end of a flexible hose. The other end of the flexible hose is connected to the dust suppressant pipe 13.

[0033] Specifically, the end of the atomizing nozzle 12 furthest from the vortex plate 122 is configured as a water outlet channel 124. This water outlet channel 124 is funnel-shaped, with its small-diameter end connected to the water pipe 11 and its large-diameter end facing the vortex chamber 123. An independent liquid outlet channel 125 is also provided inside the housing 121. One end of this liquid outlet channel 125 is connected to the side wall or interior of the water outlet channel 124, and the other end is connected to a flexible hose. The end of the hose is connected to the dust suppressant pipe 13. When water flows from the water pipe 11 through the water outlet channel 124, changes in flow velocity and pressure occur due to the cross-sectional change of the funnel-shaped channel. The opening of the liquid outlet channel 125 is located precisely in the low-pressure zone, thereby drawing the liquid dust suppressant from the dust suppressant pipe 13 into the water outlet channel 124 through the hose. After mixing with water, the liquid enters the vortex chamber 123 and is atomized and sprayed out. The automatic intake of the dust suppressant is achieved using the negative pressure generated by the water itself, eliminating the need for an additional pumping mechanism and reducing costs.

[0034] Optionally, the gravity drive mechanism 3 includes a slider 31, a guide shaft 32, a spring 33, and a positioning frame 34. The positioning frame 34 is connected to the inner wall of the water pipe 11, the guide shaft 32 is connected to the positioning frame 34, and the guide shaft 32 is coaxially arranged with the water outlet channel 124. The slider 31 is slidably connected to the guide shaft 32, and the spring 33 is sleeved on the guide shaft 32. The two ends of the spring 33 abut against the positioning frame 34 and the slider 31, respectively. Specifically, the spring 33 is sleeved on the outside of the guide shaft 32, with one end abutting against the positioning frame 34 and the other end abutting against the slider 31. The spring 33 always applies a preload force to the slider 31 in the direction of the water outlet channel 124. When the atomizing nozzle 12 is in a horizontal or downward position, the slider 31 moves closer to the water outlet channel 124 under the action of the spring 33. When the atomizing nozzle 12 gradually tilts upward, the slider 31 overcomes the elastic force of the spring 33 under the action of its own weight component along the guide shaft 32 and slides downward along the guide shaft 32. The displacement of the slider 31 increases with the increase of the tilt angle.

[0035] Optionally, the circumferential surface of the slider 31 forms a continuous stepped structure that is adapted to the inclined surface of the water outlet channel 124. When the atomizing nozzle 12 gradually tilts upward, the slider 31 slides downward along the guide shaft 32 at an angle so that the corresponding stepped surface of the continuous stepped structure gradually approaches the outlet of the liquid outlet channel 125.

[0036] In this optional embodiment, the circumferential surface of the slider 31 is formed with a continuous stepped structure, which is adapted to the trumpet-shaped inclined surface of the water outlet channel 124. Specifically, the inner wall of the water outlet channel 124 is a conical inclined surface, while the outer circumferential surface of the slider 31 is machined with multiple stepped surfaces of gradually changing diameters. Each stepped surface corresponds to a specific axial position. When the slider 31 slides along the guide shaft 32, the gap width between its stepped surface and the inner wall of the water outlet channel 124 changes accordingly. When the atomizing nozzle 12 gradually tilts upward, the slider 31 slides along the guide shaft 32 toward the inside of the water pipe 11, so that the stepped surfaces with larger diameters in the continuous stepped structure gradually... As the nozzle approaches the inner wall of the funnel-shaped opening of the water outlet channel 124, the cross-sectional area of ​​the flow decreases. According to the Venturi principle, the flow velocity increases and the static pressure decreases when the fluid flows through the narrow gap, thereby generating a stronger negative pressure at the outlet of the liquid outlet channel 125 and drawing in more dust suppressant. Conversely, when the nozzle is horizontal, the gap between the stepped surface of the slider 31 and the inner wall is larger, the flow velocity is lower, the negative pressure is smaller, and the amount of dust suppressant drawn in is less. Therefore, in this embodiment, the step surface of the slider 31 and the inner wall of the water outlet channel 124 are matched to achieve a proportional linkage between the amount of dust suppressant drawn in and the nozzle elevation angle. The larger the elevation angle, the more dust suppressant is added, which better matches the high-efficiency interception requirements of inward-outward wind.

[0037] Optionally, the traction mechanism 4 includes a pull wire 41 and an elastic wire 42. One end of the pull wire 41 is connected to the slider 31, and the other end of the pull wire 41 is connected to one side of the vortex plate 122. One end of the elastic wire 42 is connected to the other side of the vortex plate 122, and the other end of the elastic wire 42 is connected to the inner wall of the vortex chamber 123.

[0038] In this optional embodiment, when the slider 31 moves away from the water outlet channel 124 due to the nozzle tilting upwards, the pull wire 41 is tightened and pulls the vortex vane 122 to overcome the tension of the elastic wire 42, causing the vortex vane 122 to move away from the nozzle. When the nozzle returns to horizontal or downward, the slider 31 resets under the action of the spring 33, the pull wire 41 relaxes, and the tension of the elastic wire 42 pulls the vortex vane 122 back to a position close to the nozzle. This embodiment converts the linear motion of the slider 31 into the axial movement of the vortex vane 122 through the cooperation of the pull wire 41 and the elastic wire 42. The structure is simple, friction is low, and the response is sensitive. Furthermore, the pull wire 41 can be made of stainless steel wire or polymer fiber thread, and the elastic wire 42 can be made of rubber wire or spring wire, resulting in low cost.

[0039] Furthermore, the wind-driven mechanism 2 includes a wind deflector 21, an elastic rope 22, a pull rope 23, and a positioning seat 24. The positioning seat 24 is connected to the top surface of the column 110. The side of the positioning seat 24 facing the construction site has a blocking part. The bottom end of the wind deflector 21 is rotatably connected to the positioning seat 24. One end of the elastic rope 22 and the pull rope 23 are both connected to the wind deflector 21. The other end of the elastic rope 22 is connected to the top surface of the column 110. The other end of the pull rope 23 is connected to the corresponding atomizing nozzle 12.

[0040] Specifically, the positioning seat 24 is fixedly installed on the top surface of the upright 110 of the enclosure 100. The positioning seat 24 has a blocking part, such as a protrusion or block, on the side facing the construction site. The bottom end of the wind deflector 21 is rotatably connected to the positioning seat 24 via a hinge, allowing the wind deflector 21 to swing outwards or inwards in a vertical plane. One end of the elastic rope 22 is connected to the middle or upper part of the wind deflector 21, and the other end of the elastic rope 22 is fixed to the top surface of the upright 110. The elastic rope 22 always applies an inward pulling force to the wind deflector 21, keeping the wind deflector 21 vertical when there is no wind. One end of the pull rope 23 is also connected to the wind deflector 21, and the other end of the pull rope 23 passes around the guide wheel or is directly connected to the housing 121 of the corresponding atomizing nozzle 12. When natural wind blows from the outside towards the enclosure 100, the wind pressure pushes the wind deflector 21 to rotate outward against the tension of the elastic rope 22. The rotation of the wind deflector 21 pulls the atomizing nozzle 12 or water pipe 11 through the pull rope 23, causing the atomizing nozzle 12 to tilt upward. When the wind stops or the wind direction changes from the inside to the outside, the tension of the elastic rope 22 pulls the wind deflector 21 back to a vertical position, and at the same time the pull rope 23 loosens. The atomizing nozzle 12 returns to a horizontal position under its own weight. The blocking part on the positioning seat 24 can limit the wind deflector 21 from rotating too much inward, ensuring its initial position is accurate. This achieves purely mechanical wind sensing and drive, without any electrical components, and is dust-resistant, vibration-resistant, and suitable for long-term use on construction sites.

[0041] Optionally, the wind deflector 21 includes a frame 211 and a canvas 212, with the bottom end of the frame 211 rotatably connected to the positioning seat 24 and the canvas 212 connected to the middle of the frame 211.

[0042] Specifically, the frame 211 is made of lightweight metal or engineering plastic, and its bottom end has a pivot hole for hinged connection with the positioning seat 24. The frame 211 is rectangular in shape and has high structural strength. The canvas 212 is fixedly connected to the middle area of ​​the frame 211 by sewing, gluing or stripping. The canvas 212 is soft, lightweight and weather-resistant. Using the canvas 212 as the wind-receiving surface can significantly reduce the overall weight of the wind deflector 21 and improve the response sensitivity to weak winds. At the same time, the canvas 212 will produce a certain degree of elastic deformation when subjected to strong winds, preventing the rigid structure from being damaged by excessive wind pressure. The perimeter of the frame 211 can be reinforced, and the surface of the canvas 212 can be coated with a waterproof coating. When the wind blows towards the wind deflector 21, the canvas 212 first bears the wind pressure and transmits the force to the frame 211. The frame 211 rotates around the bottom pivot, thereby driving the spray mechanism 1 through the pull rope 23. Thus, while ensuring sufficient wind-receiving area, the wind-driven operation is more sensitive and reliable, and the manufacturing cost is reduced.

[0043] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A dust suppression device for construction projects, characterized in that, include: The spraying mechanism (1) includes a water pipe (11), an atomizing nozzle (12) and a rotary joint (14). Multiple sections of the water pipe (11) are arranged along the upper edge of the side of the enclosure (100) facing the construction site. Adjacent sections of the water pipe (11) are rotatably connected through the rotary joint (14). Multiple atomizing nozzles (12) are installed on each section of the water pipe (11). Multiple wind-driven mechanisms (2) are provided on the top surface of the enclosure (100). The wind-driven mechanisms (2) can rotate from a vertical position to the side of the enclosure (100) facing outward from the construction site, so as to drive the multiple atomizing nozzles (12) on the corresponding water pipe (11) to tilt upward.

2. The dust suppression device for construction projects according to claim 1, characterized in that, The spraying mechanism (1) also includes a dust suppressant pipe (13), which is connected to the upper edge of the side of the multiple columns (110) facing the construction site. The dust suppressant pipe (13) is connected to the atomizing nozzle (12). When the atomizing nozzle (12) is gradually raised, the dust suppressant pipe (13) gradually increases the flow rate of the liquid agent supplied into the atomizing nozzle (12).

3. The dust suppression device for construction projects according to claim 2, characterized in that, The atomizing nozzle (12) includes a housing (121), a vortex vane (122), and a vortex chamber (123). The vortex chamber (123) is located inside the housing (121) near the nozzle. The vortex vane (122) is slidably disposed inside the vortex chamber (123). When the atomizing nozzle (12) gradually tilts upward, the vortex vane (122) moves toward the side away from the nozzle of the housing (121).

4. The dust suppression device for construction projects according to claim 3, characterized in that, A gravity drive mechanism (3) is provided at the connection between the water pipe (11) and the atomizing nozzle (12), and a traction mechanism (4) is provided in the vortex chamber (123). The gravity drive mechanism (3) and the traction mechanism (4) are driven to move away from the nozzle of the housing (121). When the atomizing nozzle (12) gradually tilts up, the gravity drive mechanism (3) drives the vortex plate (122) to move away from the nozzle of the housing (121) through the traction mechanism (4).

5. The dust suppression device for construction projects according to claim 4, characterized in that, The end of the atomizing nozzle (12) away from the vortex plate (122) is set as a water outlet channel (124). The water outlet channel (124) is funnel-shaped. The small diameter of the water outlet channel (124) is connected to the water pipe (11). The housing (121) is provided with a liquid outlet channel (125). One end of the liquid outlet channel (125) is connected to the water outlet channel (124). The other end of the liquid outlet channel (125) is connected to one end of a flexible hose. The other end of the flexible hose is connected to the dust suppressant pipe (13).

6. The dust suppression device for construction projects according to claim 5, characterized in that, The gravity drive mechanism (3) includes a slider (31), a guide shaft (32), a spring (33), and a positioning frame (34). The positioning frame (34) is connected to the inner wall of the water pipe (11). The guide shaft (32) is connected to the positioning frame (34). The guide shaft (32) is coaxially arranged with the water outlet channel (124). The slider (31) is slidably connected to the guide shaft (32). The spring (33) is sleeved on the guide shaft (32). The two ends of the spring (33) abut against the positioning frame (34) and the slider (31), respectively.

7. The dust suppression device for construction projects according to claim 6, characterized in that, The circumferential surface of the slider (31) forms a continuous stepped structure that is adapted to the inclined surface of the water outlet channel (124). When the atomizing nozzle (12) gradually tilts upward, the slider (31) slides downward along the guide shaft (32) so that the corresponding stepped surface of the continuous stepped structure gradually approaches the outlet of the liquid outlet channel (125).

8. The dust suppression device for construction projects according to claim 7, characterized in that, The traction mechanism (4) includes a pull wire (41) and an elastic wire (42). One end of the pull wire (41) is connected to the slider (31), and the other end of the pull wire (41) is connected to one side of the vortex plate (122). One end of the elastic wire (42) is connected to the other side of the vortex plate (122), and the other end of the elastic wire (42) is connected to the inner wall of the vortex chamber (123).

9. The dust suppression device for construction projects according to claim 3, characterized in that, The wind-driven mechanism (2) includes a wind deflector (21), an elastic rope (22), a pull rope (23), and a positioning seat (24). The positioning seat (24) is connected to the top surface of the column (110). The positioning seat (24) has a blocking part on the side facing the construction site. The bottom end of the wind deflector (21) is rotatably connected to the positioning seat (24). One end of the elastic rope (22) and the pull rope (23) are both connected to the wind deflector (21). The other end of the elastic rope (22) is connected to the top surface of the column (110). The other end of the pull rope (23) is connected to the corresponding atomizing nozzle (12).

10. The dust suppression device for construction projects according to claim 9, characterized in that, The wind deflector (21) includes a frame (211) and a canvas (212). The bottom end of the frame (211) is rotatably connected to the positioning seat (24), and the canvas (212) is connected to the middle part of the frame (211).

Images