Dust falling device for construction engineering

Abstract

The application discloses a dust falling device for building engineering, which comprises a base, a fog gun barrel is installed above the base, a water tank is installed on one side of the base, and the water tank and the fog gun barrel are connected through a pipeline, a plurality of spray heads are fixedly installed on one side of the inner cavity of the fog gun barrel, an adjusting assembly is fixedly installed between the base and the fog gun barrel, a fan assembly is fixedly installed in the inner cavity of the fog gun barrel, a recovery assembly is installed above the water tank, the recovery assembly solves the problem that the water mist of a traditional fog gun machine falls due to high-speed airflow, drives the collection plate to turn over and expand into a funnel-shaped structure, uses an inclined flow guide surface to receive the undispersed water mist falling near the spray opening of the fog gun barrel due to the disturbance of the high-speed airflow of the fan, and guides the collected water mist back to the water tank through a collection tray and a recovery pipe, so that the water resource which does not effectively participate in dust falling is recycled and reused, the water resource utilization efficiency of the device is improved, and the water resource consumption of the dust falling operation of the device is reduced.

Description

Technical Field

[0001] This invention relates to the field of dust suppression technology in construction engineering, specifically a dust suppression device for construction projects. Background Technology

[0002] Construction dust suppression devices are used to reduce construction dust pollution. They atomize water under high pressure, which combines with dust and settles. Covering nets prevent dust from flying, effectively improving the construction environment, reducing the concentration of pollutants such as PM2.5, and protecting the health of construction workers and the surrounding air quality.

[0003] Chinese patent disclosure (CN222173556U) discloses a small-scale dust suppression device for construction sites. The device includes a base plate, a water storage tank, a lifting assembly, and a water pump on top of the base plate. A spraying assembly is located on top of the lifting assembly. The spraying assembly includes a U-shaped base with a rectangular fixed tube rotatably connected inside. A worm gear is located at the rear end of the rectangular fixed tube's rotating shaft. A fan and a nozzle are located inside the rectangular fixed tube. This patented technology adjusts the height of the spraying assembly through the lifting assembly, drives the worm gear to rotate, and the worm gear drives the rectangular fixed tube to rotate, thereby adjusting the pitch angle of the rectangular fixed tube. The water pump draws water from the storage tank and delivers it through a delivery hose to the inlet connection pipe, finally spraying it out from the nozzle. The fan generates airflow. The water mist sprayed from the nozzle is quickly blown out from the rectangular fixed tube, expanding the water mist range, which is beneficial for small-scale dust suppression on construction sites. However, this patent relies on a fan to propel the water mist diffusion. However, in the area near the water mist nozzle, the high-speed airflow generated by the fan creates a strong impact, disturbing the water mist particles and making it difficult to maintain a stable atomization state. A large number of water droplets are not sufficiently refined before they agglomerate into large particles due to surface tension and fall rapidly to the vicinity of the equipment under the influence of gravity. As a result, a large amount of water mist is lost before it can participate in the effective dust suppression process, causing water waste, significantly increasing the cost of construction water, and shortening the effective use time of the device for continuous dust suppression, weakening the continuity and overall effect of dust suppression operations.

[0004] Therefore, the present invention provides a dust suppression device for construction engineering to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a dust suppression device for construction projects to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A dust suppression device for construction engineering includes a base, a mist cannon is installed on the top of the base, a water tank for storing water is installed on one side of the base, and the water tank and the mist cannon are connected by a pipe to supply water to the mist cannon. Multiple nozzles are fixedly installed on one side of the inner cavity of the mist cannon to spray water mist to achieve the dust suppression function.

[0008] An adjustment component is fixedly installed between the base and the mist cannon, and the spray direction can be flexibly adjusted through the adjustment component. A fan component for promoting the diffusion of water mist is fixedly installed in the inner cavity of the mist cannon. A recycling component is installed above the water tank, and the recycling component collects the undispersed water mist near the spray nozzle of the mist cannon, and reuses the recycled water, effectively reducing water waste and improving water resource utilization efficiency.

[0009] As a further embodiment of the present invention, the recycling assembly includes a top rod located above the water tank. Four sets of collection plates are rotatably mounted on the outside of the top rod. A threaded column is rotatably connected to the bottom end of the top rod. A movable sleeve is threaded onto the outer wall of the threaded column. A drive rod for controlling the extension of the collection plates is rotatably connected to the outer wall of the movable sleeve.

[0010] As a further embodiment of the present invention, the end of the drive rod away from the moving sleeve is rotatably connected to a connecting rod, and a transmission ring is fixedly connected to both sides of the outer wall of each set of collecting plates, and the transmission ring is rotatably sleeved on the outer wall of the connecting rod.

[0011] As a further embodiment of the present invention, a collection tray is fixedly fitted on the outer wall of the bottom end of the top rod to uniformly receive the water mist that drips from the surface of each collection plate. The bottom end of the collection tray is rotatably fitted with a threaded column through a bearing. A recovery pipe is fixedly connected to the bottom end of the collection tray, and the bottom end of the recovery pipe is sealed and connected to the water tank to form a recovery water guide channel.

[0012] As a further embodiment of the present invention, the nozzle is composed of a spray pipe and a rotating pipe, and the spray pipe and the rotating pipe are rotatably connected to each other. The inner wall of the spray pipe is fixedly installed with a spiral plate and a connector for guiding the rotation of the water flow. The connecting member is ball-jointed at its axis to provide rotating blades for providing rotational power to the rotating pipe.

[0013] As a further embodiment of the present invention, a perforated plate for forming water mist is fixedly installed at the top of the rotating blade, and the perforated plate is fixedly connected to the inner wall of the rotating tube.

[0014] As a further embodiment of the present invention, the fan assembly includes a spiral guide vane, which is fixedly connected to the inner wall of the fog cannon. A drive motor is fixedly connected to one side of the spiral guide vane, and a central drive shaft is fixedly connected to the output end of the drive motor. One end of the central drive shaft passes through the spiral guide vane and is fixedly connected to a turbine drive impeller.

[0015] As a further embodiment of the present invention, the adjustment assembly includes a rotating frame located on the top surface of the base. A support column is fixedly connected to the top surface of the rotating frame, and the support column is rotatably connected to the fog cannon. An electric push rod for pushing the fog cannon to tilt is installed on one side of the support column, and the upper and lower ends of the electric push rod are rotatably connected to the rotating frame and the fog cannon, respectively.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. When in use, this invention solves the problem of water mist agglomeration and loss caused by high-speed airflow in traditional fog cannons by using a recycling component. The motor drives the threaded column to rotate, causing the moving sleeve to move axially and drive the collection plate to flip and unfold into a funnel-shaped structure. The inclined guide surface collects the undispersed water mist that falls near the fog cannon nozzle due to the disturbance of the high-speed airflow of the fan. The silicone soft plate between adjacent collection plates forms an elastic sealing structure to prevent water mist from overflowing. The collected water mist is guided back to the water tank through the collection tray and recycling pipe, realizing the efficient recycling and reuse of water resources that have not effectively participated in dust suppression, improving the water resource utilization efficiency of the device, and reducing the water resource consumption of the device in dust suppression operations.

[0018] 2. When in use, this invention achieves efficient operation through the nozzle, adjustment components, and fan components. The nozzle adopts a composite structure of spiral flow guidance and centrifugal atomization. With the built-in spiral plate guiding the water flow to form a vortex, combined with the centrifugal force of the rotating tube, the liquid water is transformed into highly dispersed, uniformly sized droplets, providing an ideal medium for dust suppression. The fan components integrate spiral guide blades and a tapered horn-shaped outlet. By constraining the airflow path and optimizing the flow field distribution, the airflow is accelerated into a spiral jet with high kinetic energy, effectively increasing the spray distance and coverage of the droplets and enhancing the dust suppression efficiency. Furthermore, the adjustment mechanism adopts an electromechanical linkage design. The horizontal rotation mechanism is driven by a servo motor and, in conjunction with an electric push rod, the spray angle of the mist cannon can be flexibly adjusted, allowing precise targeting of dust sources in different spatial locations during construction, thereby increasing the coverage of the dust suppression operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a dust suppression device used in construction engineering.

[0020] Figure 2 This is a rear view of the structure of a dust suppression device used in construction engineering.

[0021] Figure 3 This is a schematic diagram of the structure of a recycling component in a dust suppression device for building engineering.

[0022] Figure 4 This is a structural exploded view of a recycling component in a dust suppression device for building engineering.

[0023] Figure 5 This is a structural cross-sectional view of a nozzle in a dust suppression device used in construction engineering.

[0024] Figure 6 This is a structural cross-sectional view of a fan component in a dust suppression device for building engineering.

[0025] Figure 7 This is a schematic diagram of the structure of an adjusting component in a dust suppression device for building engineering.

[0026] Figure 8 This diagram illustrates the application scope of a recycling component in a dust suppression device for construction engineering.

[0027] In the picture: 1. Base; 2. Fog cannon tube; 3. Water tank;

[0028] 4. Nozzle; 401. Spray pipe; 402. Rotating pipe; 403. Spiral plate; 404. Connector; 405. Rotating blade; 406. Orifice plate;

[0029] 5. Adjustment assembly; 501. Rotating frame; 502. Support column; 503. Electric actuator; 504. Rotating motor;

[0030] 6. Fan assembly; 601. Spiral guide vanes; 602. Drive motor; 603. Central drive shaft; 604. Turbine drive impeller;

[0031] 7. Recycling components; 701. Top rod; 702. Collection plate; 703. Threaded column; 704. Moving sleeve; 705. Drive rod; 706. Motor; 707. Connecting rod; 708. Transmission ring; 709. Auxiliary rod; 710. Collection tray; 711. Recycling pipe; 712. Silicone soft plate; 713. Water pump;

[0032] 8. Trolley; 9. Fixture; 10. Control panel; 11. Support frame. Detailed Implementation

[0033] 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.

[0034] Please see Figure 1 , Figure 2 , Figure 8 In this embodiment of the invention, a dust suppression device for construction engineering includes a base 1, a mist cannon 2 installed on the top of the base 1, a water tank 3 for storing water source installed on one side of the base 1, and the water tank 3 and the mist cannon 2 are connected by a pipe to supply water to the mist cannon 2. Multiple nozzles 4 are fixedly installed on one side of the inner cavity of the mist cannon 2, and the dust suppression function is achieved by spraying water mist through the nozzles 4.

[0035] An adjustment component 5 is fixedly installed between the base 1 and the mist cannon 2, allowing for flexible adjustment of the spray direction to adapt to different dust suppression needs. A fan component 6 is fixedly installed inside the mist cannon 2 to promote water mist diffusion. The fan component 6 delivers air to propel the water mist diffusion. However, in actual use, the high-speed airflow generated by the fan component 6 creates a strong impact near the nozzle, causing the water mist particles to be disturbed and unable to maintain a stable atomization state. A large number of water droplets are not sufficiently refined and agglomerate into large particles due to surface tension, quickly falling to the surrounding area under gravity. This results in a significant loss of water mist before it participates in the effective dust suppression process, causing water waste (please see details). Figure 8 To solve the above problems, a recycling component 7 is installed above the water tank 3. The recycling component 7 collects the undispersed water mist near the nozzle of the mist cannon 2 and reuses the recycled water, effectively reducing water waste and improving water resource utilization efficiency.

[0036] Specifically, a trolley 8 is fixedly connected to the bottom surface of the base 1 to facilitate the movement of the entire device. A fixing frame 9 for fixing and supporting the water tank 3 is fixedly connected to one side of the trolley 8, and the water tank 3 is located inside the fixing frame 9. A control panel 10 is fixedly installed on one side of the base 1, which integrates functions such as start / stop button, spray volume adjustment, and fan speed control.

[0037] Please see Figure 2 , Figure 3 , Figure 4 , Figure 8 The recycling component 7 includes a top rod 701, which is located above the water tank 3. Four sets of collection plates 702 are rotatably mounted on the outside of the top rod 701 and are evenly distributed around the circumference of the top rod 701. The bottom end of the top rod 701 is rotatably connected to a threaded column 703 through a bearing. A movable sleeve 704 is threadedly fitted on the outer wall of the threaded column 703. A drive rod 705 for controlling the extension of the collection plates 702 is rotatably connected to the outer wall of the movable sleeve 704 through a pin.

[0038] Specifically, a support frame 11 for supporting the recycling assembly 7 is fixedly connected to the top surface of the fixed frame 9. A motor 706 for providing power is fixedly installed in the inner cavity of the support frame 11. The bottom end of the threaded column 703 passes through the support frame 11 and is fixedly connected to the output end of the motor 706.

[0039] The end of the drive rod 705 away from the moving sleeve 704 is rotatably connected to the connecting rod 707 via a pin. Both sides of the outer wall of each set of collecting plates 702 are fixedly connected to the transmission ring 708, and the transmission ring 708 is rotatably sleeved on the outer wall of the connecting rod 707.

[0040] Specifically, the outer wall of the top rod 701 is rotatably connected by a pin to an auxiliary rod 709 for assisting the rotation and flipping of the collection plate 702. Both the auxiliary rod 709 and the connecting rod 707 are provided in four sets and are alternately distributed between them. The transmission ring 708 on one side of the outer wall of the collection plate 702 is rotatably sleeved with the connecting rod 707, and the transmission ring 708 on the other side of the outer wall of the collection plate 702 is rotatably sleeved with the auxiliary rod 709.

[0041] More specifically, when the motor 706 starts, its output shaft drives the threaded column 703 to rotate, and through the threaded transmission, the moving sleeve 704 generates axial displacement. The moving sleeve 704 pushes the connecting rod 707 through the drive rod 705. With the limiting effect of the auxiliary rod 709, the collecting plate 702 generates synchronous flipping motion. When the collecting plate 702 completes the maximum angle expansion, the four are evenly distributed at an angle of 135°, forming a funnel-shaped structure. Its inclined guide surface can fully cover and receive the water mist falling near the spray nozzle of the fog cannon 2, significantly improving the water resource recycling efficiency.

[0042] A collection tray 710 is fixedly sleeved on the outer wall of the bottom end of the top rod 701 to uniformly receive the water mist that drips from the surface of each collection plate 702. The bottom end of the collection tray 710 is rotatably sleeved with the threaded column 703 through a bearing. A recovery pipe 711 is fixedly connected to the bottom end of the collection tray 710, and the bottom end of the recovery pipe 711 is sealed and connected to the water tank 3 to form a recovery water guide channel.

[0043] Specifically, a gap is reserved between the top surface of the collection tray 710 and the collection plate 702 to ensure that the edge of the collection plate 702 does not mechanically interfere with the collection tray 710 during the downward flipping and storage process. This satisfies the rotational movement requirements of the collection plate 702 and ensures that the collection tray 710 can completely receive the recycled water mist that slides off the surface of the collection plate 702.

[0044] More specifically, a silicone soft plate 712 is fixedly installed on the adjacent side of each pair of adjacent collection plates 702. The two sets of silicone soft plates 712 are arranged vertically in an overlapping manner. The silicone soft plate 712 of the upper collection plate 702 covers the silicone soft plate 712 of the lower collection plate 702, which has flexibility and sealing properties. When the collection plate 702 completes the flipping and unfolding action, an elastic sealing structure is formed between the adjacent silicone soft plates 712, which can ensure that the collection plate 702 can rotate freely and effectively prevent water mist from overflowing from the splicing gap of the collection plate 702, so as to achieve a fully enclosed surrounding collection of the spray nozzle area of ​​the fog cannon 2.

[0045] Please see Figure 7 A water pump 713 is fixedly installed in the inner cavity of the base 1, and the water pump 713 is fixedly connected to the water tank 3 and the nozzle 4 through pipes respectively.

[0046] Please see Figure 1 , Figure 5 The nozzle 4 is composed of a spray pipe 401 and a rotating pipe 402, and the spray pipe 401 and the rotating pipe 402 are rotatably connected to each other. The inner wall of the spray pipe 401 is fixedly installed with a spiral plate 403 for guiding the water flow rotation and a connector 404. The connecting piece 404 is ball-hung at the axis to provide the rotating power of the rotating pipe 402.

[0047] A perforated plate 406 for forming water mist is fixedly installed at the top of the rotating blade 405, and the perforated plate 406 is fixedly connected to the inner wall of the rotating tube 402.

[0048] Specifically, a protruding block is fixedly installed on the inner wall of the rotating pipe 402, and a sliding groove is provided on the outer wall of the spray pipe 401 to provide rotation for the protruding block, and the protruding block is located in the sliding groove.

[0049] Please see Figure 2 , Figure 6 The fan assembly 6 includes a spiral guide vane 601, which is fixedly connected to the inner wall of the fog cannon 2. A drive motor 602 is fixedly connected to one side of the spiral guide vane 601. A central drive shaft 603 is fixedly connected to the output end of the drive motor 602. One end of the central drive shaft 603 passes through the spiral guide vane 601 and is fixedly connected to a turbine drive impeller 604.

[0050] Specifically, multiple spiral guide vanes 601 are provided, and the annular space formed by every two spiral guide vanes 601 and the inner wall of the cannon barrel forms a fluid channel, which forcibly constrains the fluid path, avoids energy dispersion, and plays a preliminary role in stabilizing pressure. The fog cannon barrel 2 is designed as a trumpet shape, with a narrow opening on the side near the nozzle 4, which allows the fluid to flow rapidly through the narrow opening, so that the atomized water mist can obtain a higher spray speed, extend the range, and expand the coverage area.

[0051] Please see Figure 1 , Figure 7 The adjustment component 5 includes a rotating frame 501, which is located on the top surface of the base 1. A support column 502 is fixedly connected to the top surface of the rotating frame 501, and the support column 502 is rotatably connected to the fog cannon 2 through a pin. An electric push rod 503 for pushing the fog cannon 2 to tilt is installed on one side of the support column 502, and the upper and lower ends of the electric push rod 503 are rotatably connected to the rotating frame 501 and the fog cannon 2 respectively through pins.

[0052] Specifically, a rotating motor 504 for providing power for the left and right rotation of the fog cannon 2 is fixedly installed in the inner cavity of the base 1, and the output shaft of the rotating motor 504 passes through the base 1 and is fixedly connected to the rotating frame 501.

[0053] The working principle of this invention is:

[0054] When using this invention, water is first stored in water tank 3. After water pump 713 is started, water is delivered to nozzle 4 inside the mist cannon 2. Nozzle 4 consists of spray pipe 401 and rotating pipe 402. When water flows into spray pipe 401, the spiral plate 403 on the inner wall of spray pipe 401 guides the water flow to rotate, generating rotational kinetic energy. The rotating water flow drives the ball-jointed rotating blade 405 to rotate, which drives the orifice plate 406 and rotating pipe 402 to rotate synchronously. When rotating pipe 402 rotates, water is thrown out at high speed through the fine holes of orifice plate 406, atomizing into fine water droplets, thus achieving initial dust suppression.

[0055] In conjunction with the drive motor 602 of the fan assembly 6, which drives the central transmission shaft 603 and the turbine drive impeller 604 to rotate, a high-speed airflow is generated. The spiral guide vanes 601 constrain the airflow into a spiral shape. When the airflow passes through the horn-shaped narrow opening of the fog cannon 2, the airflow speed increases sharply, pushing the atomized water mist to spray far away, expanding the dust suppression coverage area, allowing the water mist particles to combine with the dust in the air, increasing the weight of the dust, causing it to settle, and achieving the purpose of dust suppression.

[0056] At the same time, the rotating motor 504 inside the base 1 is started, and its output shaft drives the rotating frame 501 to rotate, so that the fog cannon 2 can rotate 360° horizontally to adapt to the dust suppression needs in different directions. The upper and lower ends of the electric push rod 503 are connected to the rotating frame 501 and the fog cannon 2 respectively through the pin shaft. When the electric push rod 503 extends or retracts, it pushes the fog cannon 2 to rotate around the pin shaft of the support column 502 to adjust the pitch angle of the spray.

[0057] When spraying water mist, the high-speed airflow generated by the fan assembly 6 creates a strong impact in the area near the nozzle, causing some water mist particles to fall around the equipment due to this disturbance. This then starts the motor 706, causing its output shaft to drive the threaded column 703 to rotate. Through the threaded transmission, the movable sleeve 704 moves up and down axially. When the movable sleeve 704 moves upward, the drive rod 705 pushes the connecting rod 707. With the limiting action of the auxiliary rod 709, the four sets of collecting plates 702 simultaneously flip outward and unfold, eventually forming a funnel-shaped structure at a 135° angle, covering the area below the spray nozzle of the mist cannon 2 to collect water mist. Conversely, when the movable sleeve 704 moves downward, the collecting plates 702 flip inward and retract, reducing the space occupied.

[0058] Finally, the inclined surface of the unfolded collection plate 702 is used to collect the water mist that falls near the nozzle of the fog cannon 2 due to insufficient diffusion caused by airflow disturbance. The water mist gathers along the surface of the collection plate 702 to the collection tray 710. The collection tray 710 guides the recycled water back to the water tank 3 through the recycling pipe 711, realizing the recycling of water resources.

[0059] The above description is only 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 suppression device for construction engineering, comprising a base (1), characterized in that, A fog cannon (2) is installed above the base (1). A water tank (3) for storing water is installed on one side of the base (1). The water tank (3) and the fog cannon (2) are connected by a pipe to supply water to the fog cannon (2). Multiple nozzles (4) are fixedly installed on one side of the inner cavity of the fog cannon (2). Water mist is sprayed through the nozzles (4) to achieve the dust suppression function. An adjustment component (5) is fixedly installed between the base (1) and the fog cannon (2), and the spray direction can be flexibly adjusted by the adjustment component (5). A fan component (6) for promoting the diffusion of water mist is fixedly installed in the inner cavity of the fog cannon (2). A recycling component (7) is installed above the water tank (3), and the recycling component (7) collects the undiffused water mist near the spray nozzle of the fog cannon (2), and reuses the recycled water, effectively reducing water waste and improving water resource utilization efficiency. The recycling assembly (7) includes a top rod (701) located above the water tank (3). Four sets of collection plates (702) are rotatably mounted on the outside of the top rod (701). A threaded column (703) is rotatably connected to the bottom end of the top rod (701). A movable sleeve (704) is threaded onto the outer wall of the threaded column (703). A drive rod (705) for controlling the extension of the collection plates (702) is rotatably connected to the outer wall of the movable sleeve (704). The end of the drive rod (705) away from the moving sleeve (704) is rotatably connected to a connecting rod (707). Both sides of the outer wall of each set of collecting plates (702) are fixedly connected to a transmission ring (708), and the transmission ring (708) is rotatably sleeved on the outer wall of the connecting rod (707). The bottom outer wall of the top rod (701) is fixedly fitted with a collection tray (710) for uniformly receiving the water mist that drips from the surface of each collection plate (702). The bottom end of the collection tray (710) is rotatably fitted with a bearing and a threaded column (703). The bottom end of the collection tray (710) is fixedly connected with a recovery pipe (711), and the bottom end of the recovery pipe (711) is sealed and connected to the water tank (3) to form a recovery water guide channel. The nozzle (4) consists of a spray pipe (401) and a rotating pipe (402), and the spray pipe (401) and the rotating pipe (402) are rotatably connected to each other. The inner wall of the spray pipe (401) is fixedly installed with a spiral plate (403) for guiding the water flow to rotate and a connector (404). The connector (404) is ball-jointed at the axis to provide a rotating blade (405) for providing rotational power to the rotating pipe (402). The top of the rotating blade (405) is fixedly installed with a perforated plate (406) for forming water mist, and the perforated plate (406) is fixedly connected to the inner wall of the rotating tube (402).

2. The dust suppression device for construction engineering according to claim 1, characterized in that, The fan assembly (6) includes a spiral guide vane (601), which is fixedly connected to the inner wall of the fog cannon (2). A drive motor (602) is fixedly connected to one side of the spiral guide vane (601), and a central drive shaft (603) is fixedly connected to the output end of the drive motor (602). One end of the central drive shaft (603) passes through the spiral guide vane (601) and is fixedly connected to a turbine drive impeller (604).

3. The dust suppression device for construction engineering according to claim 1, characterized in that, The adjustment assembly (5) includes a rotating frame (501), which is located on the top surface of the base (1). A support column (502) is fixedly connected to the top surface of the rotating frame (501), and the support column (502) is rotatably connected to the fog cannon (2). An electric push rod (503) for pushing the fog cannon (2) to tilt is installed on one side of the support column (502), and the upper and lower ends of the electric push rod (503) are rotatably connected to the rotating frame (501) and the fog cannon (2) respectively.

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