Dust falling device for construction engineering

Abstract

The utility model relates to building engineering dust fall technical field proposes a building engineering dust fall device, including base, the bottom rotatory connection of base has the gyro wheel, the side fixed connection of base has the push rod, the top fixed connection of base has the air inlet tank, the side of air inlet tank is provided with the control switch, the top fixed connection of base has the atomizing tank, one side fixed communication of atomizing tank in the one side of air inlet tank, the top of air inlet tank has opened the air inlet hole, the side fixed connection of atomizing tank away from air inlet tank has the flow guide plate, the inside of air inlet tank is provided with the air inlet device, the inside of atomizing tank is provided with atomizing device. Automation cleaning reduces the manual maintenance cost through the above technical scheme, improves the air intake efficiency and the preliminary dust fall effect, can wash the barrier net and reduces the maintenance cost simultaneously. Solve the building engineering dust fall problem among the prior art.

Description

Technical Field

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

[0002] Construction projects generate a large amount of dust, which not only pollutes the environment but also harms the health of construction workers. Existing dust suppression devices for construction projects have some shortcomings, such as poor dust suppression effect, uneven spraying, and inability to effectively adjust dust suppression intensity, making it difficult to meet the dust suppression requirements of modern construction projects.

[0003] According to a public disclosure (Publication No.: CN216367218U), a dust suppression device for construction engineering includes a water tank and a spray cannon mounted on top of the water tank. The device further includes a spray mechanism housed within the spray cannon for spraying water to remove dust from the air. The spray mechanism comprises several evenly distributed fan blades inside the spray cannon, each fan blade equipped with a rotating component to control the rotation of the blades and drive airflow within the spray cannon. Each fan blade is equipped with a corresponding spray pipe, and the spray pipe has a liquid delivery component for pressurized water mist delivery. The device also includes a diagonal changing mechanism located between the spray cannon and the water tank to change the spray cannon's direction of attack; and a moving mechanism. This dust suppression device for construction engineering, designed using a rotating spray method to spray water into the air for dust suppression, can significantly increase the dust suppression area and work efficiency, and has practical value in the construction engineering field.

[0004] The aforementioned dust suppression equipment has a complex structure, is difficult to operate and maintain, and cannot meet the needs of modern construction sites for high efficiency, energy saving and environmental protection. Therefore, there is an urgent need for a construction dust suppression device with a simple structure and a wide range of applications. Utility Model Content

[0005] This utility model proposes a dust suppression device for construction engineering, which solves the problems of poor dust suppression effect, uneven spraying, and inability to effectively adjust dust suppression intensity in related technologies.

[0006] According to one aspect, at least one embodiment of the present invention provides a dust suppression device for construction engineering, comprising: a base, with rollers rotatably connected to the bottom of the base, a push rod fixedly connected to the side of the base, an air inlet box fixedly connected to the top of the base, a control switch provided on the side of the air inlet box, an atomizing box fixedly connected to the top of the base, one side of the atomizing box fixedly connected to one side of the air inlet box, an air inlet hole opened on the top of the air inlet box, a guide plate fixedly connected to the side of the atomizing box away from the air inlet box, and an air intake device provided inside the air inlet box; The air intake device includes a barrier mesh that is snapped onto the inner circumferential surface of the air intake hole. A rotary motor is fixedly connected to the bottom of the inner wall of the air intake box. A protective shell is provided on the side of the rotary motor. The bottom of the protective shell is fixedly connected to the top of the base. An impeller is fixedly connected to the output shaft of the rotary motor. A drive bevel gear is fixedly connected to the output shaft of the rotary motor. A spray column is fixedly connected to the side of the inner wall of the air intake box. A hydrophobic layer is snapped onto the side of the inner wall of the air intake box that communicates with the atomizing box.

[0007] For example, in at least one embodiment of the present invention, a dust suppression device for construction engineering is provided, which further includes: the barrier net is made of a washable material, and the mesh diameter of the barrier net is greater than one millimeter. The washable material is easy to clean and reuse regularly, reducing maintenance costs; the mesh diameter of more than one millimeter can effectively intercept larger particles (such as sand and gravel) from entering the equipment, while avoiding increased air intake resistance due to excessively fine mesh, ensuring air circulation efficiency and improving the continuous working capacity of the dust suppression device.

[0008] The inner wall of the air inlet box is not located on the displacement trajectory of the impeller; the impeller is located at the top of the driving bevel gear and close to the bottom of the air inlet. The inner wall of the air inlet box avoids the rotation trajectory of the impeller, which can prevent the impeller from colliding and rubbing against the inner wall, reduce equipment wear and operating noise, and extend the service life of the impeller. The impeller is close to the bottom of the air inlet and located at the top of the driving bevel gear, which shortens the intake path of air from the air inlet to the impeller, improves the intake efficiency, and allows external dusty air to enter the equipment for processing more quickly, thus enhancing the timeliness of dust suppression.

[0009] The spray columns are arranged in a linear array on the inner wall of the air intake box, symmetrically arranged along the vertical central axis of the air intake box. The six spray columns are symmetrically distributed along the vertical central axis on the side closest to the hydrophobic layer, covering a larger area of ​​the inner wall of the air intake box, resulting in more uniform water mist spraying and full contact with the dusty air, thus improving the adsorption efficiency of dust particles. The spray columns are close to the hydrophobic layer, which can complete the initial dust reduction before the air enters the atomization box, reducing the dust load of the subsequent atomization process. At the same time, the hydrophobic layer blocks moisture, preventing too many water droplets from entering the atomization box and affecting the internal structural stability.

[0010] A waterproof sealing ring is provided at the part where the output shaft of the rotary motor penetrates the protective shell; a water inlet is provided at the bottom of the inner wall of the base and the air inlet box, and the drain hole is close to the spray column. The waterproof sealing ring can prevent water mist splashed during the spraying process from seeping into the interior of the rotary motor, avoiding short circuits or corrosion of the motor and extending the service life of the motor; the drain hole is close to the spray column, which facilitates the timely collection and discharge of wastewater generated by the spraying, preventing water accumulation from causing corrosion of the inner wall of the base or air inlet box, and ensuring long-term stable operation of the equipment.

[0011] According to another aspect, at least one embodiment of this utility model also provides a dust suppression device for construction engineering, comprising: an atomizing device is provided inside the atomizing box; the atomizing device includes a driven bevel gear, the driven bevel gear meshing with a driving bevel gear; a rotating shaft is fixedly connected to the side of the driven bevel gear; a support column is rotatably connected to the circumferential surface of the rotating shaft; the rotating shaft penetrates a hydrophobic layer; a reverse-blade impeller is fixedly connected to the circumferential surface of the rotating shaft; a rotating spray column is fixedly connected to the circumferential surface of the rotating shaft; a threaded rod is fixedly connected to the end of the rotating shaft away from the driven bevel gear; a threaded sleeve is threadedly connected to the circumferential surface of the threaded rod; a connecting rod is fixedly connected to the circumferential surface of the threaded sleeve; a cleaning brush base is fixedly connected to one end of the connecting rod; a cleaning brush is snapped onto the side of the cleaning brush base; and a heat pipe is provided on the inner wall side of the atomizing box.

[0012] For example, at least one embodiment of the present invention provides a dust suppression device for construction engineering, which further includes: a dust suppression device for construction engineering, characterized in that the support column is located on the side of the hydrophobic layer near the driven bevel gear; the reverse blade impeller is located on the side of the hydrophobic layer away from the driven bevel gear, and the support column is located on the side of the hydrophobic layer near the driven bevel gear, providing stable support for the rotating shaft, ensuring the reliability of the meshing between the driven bevel gear and the driving bevel gear, and avoiding gear wear or transmission failure due to shaking during transmission; the reverse blade impeller is located on the other side of the hydrophobic layer, and the reverse airflow generated by its rotation can guide air to flow into the atomizing box, enhance airflow disturbance, promote the mixing of water mist and air in the atomizing box, and improve the dust suppression effect.

[0013] The heat pipes include long heat pipes and short heat pipes. The long heat pipes are located at the top and bottom of the atomizing box and are symmetrical to each other along the vertical central axis of the atomizing box. The short heat pipes are located on both sides of the atomizing box near the long heat pipes and are also symmetrical to each other along the vertical central axis of the atomizing box. The symmetrical distribution of long heat pipes at the top and bottom of the atomizing box and the symmetrical distribution of short heat pipes on both sides forms a uniform temperature field, which can quickly heat the air inside the atomizing box, accelerate the evaporation of moisture and the atomization process, and improve the concentration and uniformity of droplets. The symmetrical layout ensures that each area is heated evenly, avoids local overheating or undercooling that affects the atomization efficiency, and enhances the adaptability of the equipment to different ambient temperatures.

[0014] The diameter of the cleaning brush is equal to the diameter of the heat pipe; the diameter of the threaded rod is also equal to the diameter of the heat pipe. The cleaning brush diameter matches the heat pipe diameter, allowing it to closely conform to the heat pipe surface. As it moves axially along the heat pipe under the drive of the threaded rod, it effectively removes dust, scale, and other impurities adhering to the heat pipe surface, maintaining the heat transfer efficiency of the heat pipe and ensuring stable atomization. Matching the threaded rod diameter to the heat pipe diameter ensures that the threaded sleeve drives the cleaning brush to move smoothly, avoiding incomplete cleaning or jamming due to dimensional deviations. This achieves automated cleaning and reduces manual maintenance costs.

[0015] The rotating spray column has several spray columns arranged on its circumference, and they are all arranged in a circumferential array on the circumference of the rotating spray column. The several spray columns are distributed along the circumferential array, and the rotating spray column can form a spray coverage area without dead angles when it rotates. The rotational motion increases the contact time and turbulence between water mist and air, ensuring that the cleanliness of the discharged mist meets environmental protection requirements.

[0016] The working principle and beneficial effects of this utility model are as follows: 1. This utility model achieves preliminary treatment of dusty air through an air intake device: a rotary motor drives an impeller to rotate, generating negative pressure, which draws external dusty air into the air intake box through the air intake hole; the air first passes through a barrier screen to intercept large particles (such as sand and gravel), and then a spray column sprays water mist to adsorb dust particles, completing the initial dust reduction; a hydrophobic layer prevents moisture in the water mist from entering the atomizing box, avoiding water accumulation inside the equipment. This design improves air intake efficiency and preliminary dust reduction effect, while the washable barrier screen reduces maintenance costs, the waterproof sealing ring protects the motor's lifespan, and the drain hole promptly discharges wastewater to prevent equipment corrosion.

[0017] 2. This utility model enhances dust suppression and maintenance functions through an atomization device: the rotation of the active bevel gear drives the meshing transmission of the driven bevel gear, driving the rotating shaft to rotate; the rotation of the reverse impeller guides air into the atomization box and enhances turbulence; the rotating spray column rotates with the shaft to form a spray without dead angles, further atomizing and adsorbing dust; the heat pipe heats up the temperature inside the atomization box, accelerating the diffusion of water mist; simultaneously, the rotating shaft drives the threaded rod to rotate, and the threaded sleeve drives the cleaning brush to move along the axial direction of the heat pipe through the connecting rod, cleaning impurities on the surface of the heat pipe and maintaining heat conduction efficiency. This design enhances the atomization dust suppression effect, ensures continuous and efficient operation of the equipment, and the automated cleaning reduces manual maintenance costs. Attached Figure Description

[0018] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0019] Figure 1 This is a three-dimensional appearance structure diagram of the present utility model; Figure 2 This is a three-dimensional appearance structure diagram of the present utility model; Figure 3 This is a schematic diagram of the three-dimensional air intake device and atomizing device of this utility model; Figure 4 This is a schematic diagram of the three-dimensional air intake device of this utility model; Figure 5 This is a schematic diagram of the three-dimensional atomization device of this utility model.

[0020] In the diagram: 1. Base; 2. Roller; 3. Push rod; 4. Air inlet box; 5. Control switch; 6. Atomizing box; 7. Air inlet; 8. Guide plate; 9. Air inlet device; 901. Barrier mesh; 902. Rotary motor; 903. Protective shell; 904. Impeller; 905. Driving bevel gear; 906. Spray column; 907. Hydrophobic layer; 10. Atomizing device; 1001. Driven bevel gear; 1002. Rotating shaft; 1003. Support column; 1004. Reverse impeller; 1005. Rotating spray column; 1006. Threaded rod; 1007. Threaded sleeve; 1008. Connecting rod; 1009. Cleaning brush base; 1010. Cleaning brush; 1011. Heat pipe. Detailed Implementation

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0022] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] like Figures 1-5As shown, a dust suppression device for construction engineering is illustrated in one embodiment of the present invention, comprising: a base 1, a roller 2 rotatably connected to the bottom of the base 1, a push rod 3 fixedly connected to the side of the base 1, an air inlet box 4 fixedly connected to the top of the base 1, a control switch 5 provided on the side of the air inlet box 4, an atomizing box 6 fixedly connected to the top of the base 1, one side of the atomizing box 6 fixedly connected to one side of the air inlet box 4, an air inlet hole 7 opened on the top of the air inlet box 4, a guide plate 8 fixedly connected to the side of the atomizing box 6 away from the air inlet box 4, and an air intake device 9 provided inside the air inlet box 4. The air intake device 9 includes a barrier net 901, which is snapped onto the inner circumferential surface of the air intake hole 7. A rotary motor 902 is fixedly connected to the bottom of the inner wall of the air intake box 4. A protective shell 903 is provided on the side of the rotary motor 902. The bottom of the protective shell 903 is fixedly connected to the top of the base 1. An impeller 904 is fixedly connected to the output shaft of the rotary motor 902. A drive bevel gear 905 is fixedly connected to the output shaft of the rotary motor 902. A spray column 906 is fixedly connected to the side of the inner wall of the air intake box 4. A hydrophobic layer 907 is snapped onto the side of the inner wall of the air intake box 4 that communicates with the atomizing box 6.

[0026] In some examples, the barrier mesh 901 is made of a washable material and the mesh diameter of the barrier mesh 901 is greater than one millimeter. The washable material makes it easy to clean and reuse regularly, reducing maintenance costs. The mesh diameter of more than one millimeter can effectively intercept larger particles (such as sand and debris) from entering the equipment, while avoiding increased air intake resistance due to excessively fine mesh, ensuring air circulation efficiency and improving the continuous working capacity of the dust suppression device.

[0027] The inner wall of the air inlet box 4 is not located on the displacement trajectory of the impeller 904; the impeller 904 is located at the top of the drive bevel gear 905 and close to the bottom of the air inlet 7. The inner wall of the air inlet box 4 avoids the rotation trajectory of the impeller 904, which can prevent the impeller 904 from colliding and rubbing against the inner wall, reduce equipment wear and operating noise, and extend the service life of the impeller 904; the impeller 904 is close to the bottom of the air inlet 7 and located at the top of the drive bevel gear 905, which shortens the intake path of air from the air inlet 7 to the impeller 904, improves the intake efficiency, and allows external dusty air to enter the equipment for processing more quickly, enhancing the timeliness of dust suppression.

[0028] Six spray columns 906 are arranged in a linear array on the inner wall side of the air intake box 4 and are symmetrical to each other along the vertical central axis of the air intake box 4. The spray columns 906 are located on the side closest to the hydrophobic layer 907. The six spray columns 906 are symmetrically distributed along the vertical central axis, covering a larger area of ​​the inner wall of the air intake box 4, making the water mist spray more uniform, and ensuring full contact with the dust-laden air, thereby improving the adsorption efficiency of dust particles. The spray columns 906 are close to the hydrophobic layer 907, which can complete the initial dust reduction before the air enters the atomization box 6, reducing the dust load of the subsequent atomization process. At the same time, the hydrophobic layer 907 blocks moisture, preventing too many water droplets from entering the atomization box 6 and affecting the internal structural stability.

[0029] A waterproof sealing ring is provided at the part where the output shaft of the rotary motor 902 passes through the protective shell 903; a drain hole is provided at the bottom of the inner wall of the base 1 and the air inlet box 4, and the drain hole is close to the spray column 906. The waterproof sealing ring can prevent water mist splashed during the spraying process from seeping into the interior of the rotary motor 902, avoiding short circuits or corrosion of the motor and extending the service life of the motor; the drain hole is close to the spray column 906, which facilitates the timely collection and discharge of wastewater generated by the spraying, preventing water accumulation from causing corrosion of the inner wall of the base 1 or the air inlet box 4, and ensuring long-term stable operation of the equipment.

[0030] For example, such as Figures 1-5 As shown, after the rotary motor 902 starts, its output shaft drives the impeller 904 to rotate at high speed, generating negative pressure in the air intake box 4. External dust-laden air is then drawn into the air intake box 4 through the air intake port 7. The air first passes through the barrier mesh 901 to intercept large particles such as sand and debris. Then, the spray column 906 sprays water mist into the air intake box 4. The water mist fully contacts the dust-laden air and adsorbs dust particles, completing the initial dust reduction. The pre-treated air enters the atomizing box 6 through the hydrophobic layer 907. The hydrophobic layer 907 blocks moisture from the water mist, preventing excessive water droplets from entering the atomizing box 6 and affecting its internal structure.

[0031] like Figures 1-5As shown, this illustrates a dust suppression device for construction engineering in another embodiment of the present invention. Its technical solution is largely the same as that of Embodiment 1, so only the differences are described, including: an atomizing device 10 is provided inside the atomizing box 6; the atomizing device 10 includes a driven bevel gear 1001, which meshes with a driving bevel gear 905; a rotating shaft 1002 is fixedly connected to the side of the driven bevel gear 1001; a support column 1003 is rotatably connected to the circumferential surface of the rotating shaft 1002; the rotating shaft 1002 penetrates the hydrophobic layer 907; and the rotating shaft 1002... A reverse-blade impeller 1004 is fixedly connected to the circumferential surface of the rotating shaft 1002. A rotating spray column 1005 is fixedly connected to the circumferential surface of the rotating shaft 1002. A threaded rod 1006 is fixedly connected to the end of the rotating shaft 1002 away from the driven bevel gear 1001. A threaded sleeve 1007 is threadedly connected to the circumferential surface of the threaded rod 1006. A connecting rod 1008 is fixedly connected to the circumferential surface of the threaded sleeve 1007. A cleaning brush base 1009 is fixedly connected to one end of the connecting rod 1008. A cleaning brush 1010 is snapped onto the side of the cleaning brush base 1009. A heat pipe 1011 is provided on the inner wall side of the atomizing box 6.

[0032] In some examples, the following are also included: a support column 1003 is located on the side of the hydrophobic layer 907 near the driven bevel gear 1001; a reverse impeller 1004 is located on the side of the hydrophobic layer 907 away from the driven bevel gear 1001; the support column 1003 provides stable support for the rotating shaft 1002, ensuring the reliability of the meshing between the driven bevel gear 1001 and the driving bevel gear 905, and avoiding gear wear or transmission failure due to shaking during transmission; the reverse airflow generated by the rotation of the reverse impeller 1004 can guide air to flow into the atomizing box 6, enhance airflow disturbance, promote the mixing of water mist and air in the atomizing box 6, and improve the dust reduction effect.

[0033] Heat pipe 1011 includes long heat pipes and short heat pipes; the long heat pipes are located at the top and bottom of the atomizing box 6 and are symmetrical to each other along the vertical central axis of the atomizing box 6; the short heat pipes are located on both sides of the atomizing box 6 near the long heat pipes and are symmetrical to each other along the vertical central axis of the atomizing box 6. The long heat pipes are symmetrically distributed at the top and bottom of the atomizing box 6 and the short heat pipes are symmetrically distributed on both sides, forming a uniform temperature field, which can quickly heat the air inside the atomizing box 6, accelerate the evaporation of moisture and the atomization process, and improve the concentration and uniformity of droplets. The symmetrical layout ensures that each area is heated evenly, avoids local overheating or undercooling from affecting the atomization efficiency, and enhances the adaptability of the equipment to different ambient temperatures.

[0034] The diameter of the cleaning brush 1010 is equal to the diameter of the heat pipe 1011; the diameter of the threaded rod 1006 is equal to the diameter of the heat pipe 1011. The diameter of the cleaning brush 1010 is consistent with the diameter of the heat pipe 1011, which can fit tightly against the surface of the heat pipe 1011. When it moves along the axial direction of the heat pipe 1011 under the drive of the threaded rod 1006, it effectively removes dust, scale and other impurities attached to the surface of the heat pipe 1011, maintains the heat conduction efficiency of the heat pipe 1011, and ensures stable atomization effect. The diameter of the threaded rod 1006 matches the diameter of the heat pipe 1011, which can ensure that the threaded sleeve 1007 drives the cleaning brush 1010 to move smoothly, avoid incomplete cleaning or jamming due to size deviation, realize automated cleaning, and reduce manual maintenance costs.

[0035] Several spray columns are arranged on the circumferential surface of the rotating spray column 1005, and they are all arranged in a circumferential array on the circumferential surface of the rotating spray column 1005. The several spray columns are distributed in a circumferential array, and the rotating spray column 1005 can form a spray coverage range without dead angles when it rotates. The rotational motion increases the contact time and turbulence between water mist and air, ensuring that the cleanliness of the discharged mist meets environmental protection requirements.

[0036] For example, such as Figures 1-5 As shown, the output shaft of the rotary motor 902 synchronously drives the active bevel gear 905 to rotate. The active bevel gear 905 meshes with the driven bevel gear 1001, driving the rotating shaft 1002 to rotate. When the rotating shaft 1002 rotates, the reverse impeller 1004 on it rotates synchronously, generating a reverse airflow that guides the air into the atomizing box 6 and enhances the turbulence. At the same time, the rotating spray column 1005 rotates with the rotating shaft 1002, and its circumferential array of spray columns sprays water mist, forming a comprehensive coverage without dead angles, further adsorbing fine dust in the air and enhancing the dust suppression effect. In addition, the rotating shaft 1002 drives the threaded rod 1006 to rotate, and the threaded sleeve 1007 moves axially on the threaded rod 1006. Through the connecting rod 1008, the cleaning brush 1010 is driven to slide along the surface of the heat pipe 1011 to clean the dust, scale and other impurities attached to the heat pipe 1011 and maintain the heat conduction efficiency of the heat pipe 1011. The long and short heat pipes 1011 are symmetrically distributed and heat the air in the atomizing box 6 to accelerate the evaporation and diffusion of water mist and improve the atomization effect.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A dust suppression device for construction projects, characterized in that, Includes a base (1), with a roller (2) rotatably connected to the bottom of the base (1), a push rod (3) fixedly connected to the side of the base (1), an air inlet box (4) fixedly connected to the top of the base (1), a control switch (5) provided on the side of the air inlet box (4), an atomizing box (6) fixedly connected to the top of the base (1), one side of the atomizing box (6) fixedly connected to one side of the air inlet box (4), an air inlet hole (7) opened on the top of the air inlet box (4), a guide plate (8) fixedly connected to the side of the atomizing box (6) away from the air inlet box (4), and an air intake device (9) provided inside the air inlet box (4). The air intake device (9) includes a barrier net (901), which is snapped onto the inner circumferential surface of the air intake hole (7). A rotary motor (902) is fixedly connected to the bottom of the inner wall of the air intake box (4). A protective shell (903) is provided on the side of the rotary motor (902). The bottom of the protective shell (903) is fixedly connected to the top of the base (1). An impeller (904) is fixedly connected to the output shaft of the rotary motor (902). An active bevel gear (905) is fixedly connected to the output shaft of the rotary motor (902). A spray column (906) is fixedly connected to the side of the inner wall of the air intake box (4). A hydrophobic layer (907) is snapped onto the side of the inner wall of the air intake box (4) that communicates with the atomizing box (6).

2. The dust suppression device for construction engineering according to claim 1, characterized in that, The barrier mesh (901) is made of a washable material, and the mesh diameter of the barrier mesh (901) is greater than one millimeter.

3. A dust suppression device for construction engineering according to claim 2, characterized in that, The inner wall of the air inlet box (4) is not located on the displacement trajectory of the impeller (904); the impeller (904) is located at the top of the active bevel gear and close to the bottom of the air inlet (7).

4. A dust suppression device for construction engineering according to claim 3, characterized in that, There are six spray columns (906) arranged in a linear array on the inner wall side of the air inlet box (4) and symmetrical to each other along the vertical central axis of the air inlet box (4). The spray columns (906) are located on the side close to the hydrophobic layer (907).

5. A dust suppression device for construction engineering according to claim 4, characterized in that, A waterproof sealing ring is provided at the part where the output shaft of the rotary motor (902) passes through the protective shell (903); a drain hole is provided at the bottom of the inner wall of the base (1) and the air inlet box (4), and the drain hole is close to the spray column (906).

6. A dust suppression device for construction engineering according to claim 5, characterized in that, The atomizing box (6) is equipped with an atomizing device (10), which includes a driven bevel gear (1001) that meshes with a driving bevel gear (905). A rotating shaft (1002) is fixedly connected to the side of the driven bevel gear (1001). A support column (1003) is rotatably connected to the circumferential surface of the rotating shaft (1002). The rotating shaft (1002) penetrates the hydrophobic layer (907). A reverse-blade impeller (1004) is fixedly connected to the circumferential surface of the rotating shaft (1002). A rotating spray column (1005) is fixedly connected. A threaded rod (1006) is fixedly connected to one end of the rotating shaft (1002) away from the driven bevel gear (1001). A threaded sleeve (1007) is threadedly connected to the circumferential surface of the threaded rod (1006). A connecting rod (1008) is fixedly connected to the circumferential surface of the threaded sleeve (1007). A cleaning brush base (1009) is fixedly connected to one end of the connecting rod (1008). A cleaning brush (1010) is snapped onto the side of the cleaning brush base (1009). A heat pipe (1011) is provided on the inner wall side of the atomizing box (6).

7. A dust suppression device for construction engineering according to claim 6, characterized in that, The support column (1003) is located on the side of the hydrophobic layer (907) closer to the driven bevel gear (1001); the reverse blade impeller (1004) is located on the side of the hydrophobic layer (907) away from the driven bevel gear (1001).

8. A dust suppression device for construction engineering according to claim 7, characterized in that, The heat pipe (1011) includes a long heat pipe and a short heat pipe; the long heat pipe is located at the top and bottom of the atomizing box, and the long heat pipe is symmetrical to each other along the vertical central axis of the atomizing box (6); the short heat pipe is located on both sides of the atomizing box (6) near the long heat pipe, and the short heat pipe is symmetrical to each other along the vertical central axis of the atomizing box (6).

9. A dust suppression device for construction engineering according to claim 8, characterized in that, The diameter of the cleaning brush (1010) is equal to the diameter of the heat pipe (1011); the diameter of the threaded rod (1006) is equal to the diameter of the heat pipe (1011).

10. A dust suppression device for construction engineering according to claim 9, characterized in that, The rotating spray column (1005) has several spray columns arranged on its circumference, and they are all arranged in a circumferential array on the circumferential surface of the rotating spray column (1005).

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