Dust falling device for construction site

Abstract

The invention discloses a dust falling device for a construction site, and particularly relates to the technical field of constructions.The dust falling device comprises a barrel, a stand column is fixedly mounted in the middle of the upper end of the barrel, a collecting device is mounted in the middle of the outer surface of the stand column, and a spraying device is mounted at the top of the outer surface of the stand column; a water storage cavity, a movable cavity, an equipment cavity and an air suction cavity are sequentially installed in the stand column from top to bottom, and a separation pipe is fixedly installed in the barrel. According to the dust falling device for the construction site, when water mist is used for carrying out dust falling on the environment of the construction site, the situation that the ground is muddy due to the water mist is avoided, the environmental protection property and safety of construction of the construction site are improved, meanwhile, the sprayed water mist can be collected, filtered and reused, waste of water resources is avoided, and the device is worthy of popularization. The utilization rate can be improved by recollecting the water mist, so that the device has the advantages of energy conservation and environmental protection, and the requirements of current social development are better met.

Description

Technical Field

[0001] The invention relates to the technical field of construction, and in particular to a dust suppression device for construction sites. Background Art

[0002] A large amount of cement and river sand will be stored at the construction site for mixing and use in construction. In addition, the ground of the construction site is also sandy. Cement or river sand is easily blown up by the wind to produce dust. The sandy ground at the construction site will also raise dust when vehicles pass by, which will be inhaled by the construction workers on the construction site and endanger their health. On the other hand, if the dust is not controlled and allowed to spread, it will also endanger the surrounding environment and affect the lives of surrounding residents. Therefore, it is necessary to use dust reduction equipment to absorb dust in the air and improve the air quality of the construction site.

[0003] Existing construction site dust reduction is mostly carried out by installing fog cannons and spraying water mist to reduce dust. However, this type of dust reduction has many problems. On the one hand, the water mist cannot be collected by the fog cannon, resulting in muddy ground, inconvenience for construction, and safety hazards. At the same time, the water mist method consumes a lot of water when used for a long time and is costly. Therefore, a dust reduction device for construction sites is needed. Summary of the invention

[0004] The main purpose of the present invention is to provide a dust suppression device for construction sites, which can effectively solve the problems in the background technology that spraying water mist causes the ground to be muddy and is not conducive to construction and consumes a lot of water.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A dust suppression device for construction sites comprises a cylinder, a column is fixedly installed in the middle of the upper end of the cylinder, a collecting device is installed in the middle of the outer surface of the column, a spray device is installed on the top of the outer surface of the column, a water storage chamber, an activity chamber, an equipment chamber and an air suction chamber are installed in the column from top to bottom, a partition pipe is fixedly installed in the cylinder, the partition pipe divides the internal chamber of the cylinder into a collecting chamber and an exhaust chamber distributed inside and outside, the bottom of the air suction chamber is connected with the top of the collecting chamber, a mounting plate is fixedly installed in the middle and upper part of the inner wall of the collecting chamber, and a first mounting plate is provided in the middle of the mounting plate A mounting port, a filter is installed inside the first mounting port, a plurality of second mounting ports connected to the exhaust chamber are opened in the middle and lower part of the inner wall of the collecting chamber, a hydrophobic microporous membrane is installed in the second mounting port, a plurality of air inlet holes are opened in sequence from top to bottom on the side wall of the suction chamber, a high-pressure axial flow fan is fixedly installed at the bottom of the inner wall of the suction chamber, a plurality of exhaust ports are opened on the outer surface of the exhaust chamber, a honeycomb rectifying grid is fixedly installed at the bottom of the suction chamber, and the honeycomb rectifying grid is installed in front of the outlet to eliminate vortices and turbulence, make the airflow uniform, and maximize the stability of the outlet speed.

[0007] Preferably, the collecting device includes a motor, a mounting sleeve and an umbrella rib, the motor is fixedly mounted in the equipment cavity, the output end of the motor extends through the active cavity and is fixedly mounted with a screw, the inner wall of the active cavity is evenly provided with a plurality of limiting grooves, the mounting sleeve slides up and down on the outer surface of the column, the outer surface of the screw is threadedly connected with a driving block, a plurality of connecting plates are evenly distributed and fixedly mounted on the outer surface of the driving block, the connecting plates penetrate the limiting grooves and are fixedly connected to the mounting sleeve, the connecting plates are slidably connected to the limiting grooves, a plurality of umbrella ribs are provided, each umbrella rib is evenly distributed and rotatably mounted on the middle and lower part of the outer surface of the column through hinges, an umbrella surface is commonly fixedly mounted between adjacent umbrella ribs, a plurality of linkage rods opposite to the umbrella ribs are rotatably connected to the outer surface of the mounting sleeve through hinges, and the end of the linkage rod away from the mounting sleeve is hinged to the middle part of the umbrella rib.

[0008] Preferably, a fixed tube is fixedly installed on the upper end of the cylinder, and the fixed tube is sleeved on the outside of the column. A conical tube is fixedly installed on the upper end of the fixed tube, and the inner edge of the umbrella surface is located inside the conical tube. A collecting groove is formed between the fixed tube and the column, and a through hole connected to the bottom wall of the collecting groove is opened on the outer surface of the suction cavity.

[0009] Preferably, the spray device includes a plurality of transverse plates evenly distributed on the top of the outer surface of the column and a second water pump installed in the water storage chamber, the transverse plate having an end close to the column fixedly mounted with a sector gear, both sides of the sector gear are provided with fixing plates, the sector gear is rotatably mounted between the two fixing plates by a rotating rod, one end of the fixing plate is fixedly connected to the outer surface of the column, mounting plates are fixedly mounted on both sides of the bottom of the transverse plate, a water spray pipe is fixedly mounted between the two mounting plates, a plurality of nozzles are arranged at the bottom of the water spray pipe, a slide groove is provided at the ends of the two fixing plates close to each other, a tooth plate is slidably connected in the two slide grooves, the sector gear is meshed with the tooth plate, a plurality of delivery pipes are fixedly mounted on the output end of the second water pump, the delivery pipe passes through the column and is fixedly mounted with a hose, and the hose is connected to the water spray pipe.

[0010] Preferably, a support plate is fixedly connected to the bottom of the tooth plate, and the bottom of the support plate is fixedly connected to the top of the mounting sleeve below.

[0011] Preferably, a first water pump is fixedly installed on the bottom wall of the collecting chamber, and a connecting pipe is fixedly installed on the output end of the first water pump. The upper end of the connecting pipe passes through the mounting plate and the cylinder body and extends upward close to the surface of the column and then passes through and extends into the water storage chamber. The connecting pipe does not affect the rotation of the umbrella surface and the up and down movement of the mounting sleeve.

[0012] Preferably, the inner wall of the air suction chamber is provided with spiral guide ribs to guide the airflow to rotate downward, and utilize centrifugal force to reduce boundary layer separation and reduce friction loss.

[0013] Preferably, the density of the air inlet holes on the surface of the column decreases from top to bottom, and the hole diameter also decreases gradually. Top section: dense openings (such as 20 holes per meter, hole diameter 8mm), so that a large amount of gas enters from the top, forming an initial high flow rate, middle section: the opening density is halved (10 holes per meter, hole diameter 6mm), replenishing the air flow but avoiding excessive dilution of downstream kinetic energy, bottom section: closing or minimizing the openings (5 holes per meter, hole diameter 4mm), reducing the end gas interference, and concentrating the outlet flow rate.

[0014] Preferably, a guide vane obliquely downward is installed in the middle of the air inlet to ensure that the direction of entry of external air is consistent with the main airflow and to reduce turbulence caused by the lateral velocity component.

[0015] Preferably, a centrifugal fan is fixedly installed in the middle of the air suction chamber to balance the pressure gradient and prevent the upstream air flow speed from being insufficient, which affects the speed at which the external air enters the air suction chamber and further affects the collection of water mist.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The invention discloses a dust suppression device for construction sites. The dust suppression device is provided with a collecting device. The collecting device is unfolded into an umbrella shape and is arranged under a spray device to collect water mist sprayed by the spray device to prevent the water mist from falling on the ground and causing muddy ground after absorbing dust. At the same time, an air suction chamber, spiral guide ribs, air inlet holes and a high-pressure axial flow fan cooperate with each other to generate a negative pressure suction force toward the center of a column, which can cause the peripheral water mist to gather toward the middle to prevent the water mist from diffusing, thereby further improving the collection effect of the water mist. The collected water mist is filtered through a filter net to filter dust adsorbed by the water mist, and then the water mist is separated into gas and liquid through a hydrophobic microporous membrane. Water remains in the collecting chamber and gas is discharged to the outside. The water collected in the collecting chamber is transported to a water storage chamber through a first water pump and a connecting pipe to be reused by the spray device. When the present invention utilizes water mist to reduce dust in the environment of the construction site, it also avoids causing the water mist to make the ground muddy, thereby improving the environmental protection and construction safety of the construction environment of the construction site. At the same time, the sprayed water mist can be collected and filtered before being reused, thus avoiding the waste of water resources. Re-collecting the water mist can improve the utilization rate, so that the device has the advantages of energy saving and environmental protection, and is more in line with the needs of current social development. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a cutaway schematic diagram of the present invention;

[0020] Figure 3 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0021] Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0022] Figure 5 Schematic diagram of the detailed structure inside the suction cavity.

[0023] In the figure: 1, cylinder; 2, column; 3, spray device; 4, collection device; 5, high-pressure axial flow fan; 6, centrifugal fan; 7, partition tube; 8, mounting plate; 9, filter screen; 10, hydrophobic microporous membrane; 11, fixed tube; 12, conical tube; 13, connecting tube; 14, support plate; 15, first water pump; 16, spiral guide rib; 17, honeycomb rectifier grid; 18, guide vane; 19, flexible solar panel; 41, motor; 42, screw; 43, drive block; 44, connecting plate; 45, installation sleeve; 4 6. linkage rod; 47. ribs; 48. umbrella surface; 21. air suction chamber; 22. equipment chamber; 23. activity chamber; 24. water storage chamber; 101. exhaust chamber; 102. collecting chamber; 211. air inlet; 212. through hole; 103. exhaust port; 81. first mounting port; 71. second mounting port; 231. limiting groove; 31. fixing plate; 32. horizontal plate; 33. sector gear; 34. tooth plate; 35. mounting plate; 36. water spray pipe; 37. hose; 38. nozzle; 39. second water pump; 310. delivery pipe. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] See also Figure 1 and Figure 2As shown, a dust suppression device for construction sites comprises a cylinder 1, a column 2 is fixedly installed in the middle of the upper end of the cylinder 1, a collecting device 4 is installed in the middle of the outer surface of the column 2, a spray device 3 is installed on the top of the outer surface of the column 2, a water storage chamber 24, an active chamber 23, an equipment chamber 22 and an air suction chamber 21 are installed in the column 2 from top to bottom, a partition tube 7 is fixedly installed in the cylinder 1, the partition tube 7 divides the internal chamber of the cylinder 1 into a collecting chamber 102 and an exhaust chamber 101 distributed inside and outside, the bottom of the air suction chamber 21 is connected with the top of the collecting chamber 102, a mounting plate 8 is fixedly installed in the middle and upper part of the inner wall of the collecting chamber 102, a first mounting port 81 is opened in the middle of the mounting plate 8, a filter screen 9 is installed in the first mounting port 81, a plurality of second mounting ports 71 connected with the exhaust chamber 101 are opened in the middle and lower part of the inner wall of the collecting chamber 102, a hydrophobic microporous membrane 10 is installed in the second mounting port 71, A plurality of air inlet holes 211 are provided in sequence on the side wall of the air intake chamber 21 from top to bottom, a high-pressure axial flow fan 5 is fixedly installed on the bottom of the inner wall of the air intake chamber 21, providing a strong negative pressure to attract the gas to flow downward and directly accelerate the outlet airflow, a plurality of exhaust ports 103 are provided on the outer surface of the exhaust chamber 101, a honeycomb rectifying grid 17 is fixedly installed on the bottom of the air intake chamber 21, a fixed pipe 11 is fixedly installed on the upper end of the cylinder 1, the fixed pipe 11 is sleeved on the outside of the column 2, a conical pipe 12 is fixedly installed on the upper end of the fixed pipe 11, a collecting groove is formed between the fixed pipe 11 and the column 2, a through hole 212 connected to the bottom wall of the collecting groove is provided on the outer surface of the air intake chamber 21, the water mist collected by the collecting device 4 is gathered into a water flow and collected in the collecting groove, and then enters the air intake chamber 21 through the through hole 212, and then is transported to the collecting chamber 102, and an inspection port is provided on the cylinder 1 for maintaining the filter screen 9 and the hydrophobic microporous membrane 10.

[0026] Specifically, the honeycomb rectifying grid 17 adopts a gradual honeycomb structure, gradually reducing the aperture along the flow direction, and adopts a rotational alignment design to match the honeycomb axis with the downward spiral flow direction. At the same time, the honeycomb rectifying grid 17 is mirror-polished to reduce the surface friction coefficient and maintain a high-speed core flow.

[0027] When in use, the spray device 3 is started to spray, so that the water mist combines with the dust in the air, increases the weight of the dust, and makes the dust fall into the collecting device 4 below, finally achieving the purpose of dust removal and air purification, and at the same time can prevent the ground from becoming muddy due to the water mist, and then the water mist with dust is collected by the collecting device 4, and the high-pressure axial flow fan 5 is started to provide a strong negative pressure to attract the gas to flow downward, and directly accelerate the outlet airflow, and negative pressure is generated in the air intake chamber 21. The external water mist with dust enters the air intake chamber 21 through the air inlet 211, and then enters the collecting chamber 102. When the high-pressure water mist passes through the filter 9, the dust in the water mist is filtered, and then the clean water mist enters the bottom of the collecting chamber 102, and passes through the hydrophobic microporous membrane 10 under the action of the wind pressure generated by the high-pressure axial flow fan 5. Liquid water cannot pass through the membrane pores due to surface tension, and forms droplets that are trapped on the membrane surface, and the air (N 2 , O 2 The dust and water mist generated at the construction site are collected through the air inlet 211 into the air suction chamber 21 with the cooperation of the high-pressure axial flow fan 5, and then a preliminary solid-liquid separation is performed by setting a filter screen 9 to separate the dust and water mist, and the water mist enters the bottom of the mounting plate 8, and then the water mist is separated into gas and liquid through the hydrophobic microporous membrane 10, and the water remains at the bottom of the collecting chamber 102, and the rest is discharged to the outside, thereby completing the dust reduction work at the construction site and avoiding muddy ground due to water mist, and adsorbing dust to the construction environment of the construction site, thereby improving the environmental protection and construction safety of the construction environment of the construction site.

[0028] See also Figure 2 and Figure 4 As shown, the collecting device 4 includes a motor 41, a mounting sleeve 45 and an umbrella rib 47. The motor 41 is fixedly installed in the equipment cavity 22. The output end of the motor 41 extends through the active cavity 23 and is fixedly installed with a screw 42. The inner wall of the active cavity 23 is evenly provided with a plurality of limiting grooves 231. The mounting sleeve 45 slides up and down on the outer surface of the column 2. The outer surface of the screw 42 is threadedly connected with a driving block 43. The outer surface of the driving block 43 is evenly distributed and fixedly installed with a plurality of connecting plates 44. The connecting plates 44 penetrate the limiting grooves. 231 and is fixedly connected to the mounting sleeve 45, the connecting plate 44 is slidably connected to the limiting groove 231, a plurality of ribs 47 are provided, and each rib 47 is evenly distributed and rotatably mounted on the middle and lower part of the outer surface of the column 2 through a hinge, and an umbrella cover 48 is fixedly mounted between adjacent ribs 47, and the inner edge of the umbrella cover 48 is located inside the conical tube 12, and a plurality of linkage rods 46 opposite to the ribs 47 are rotatably connected to the outer surface of the mounting sleeve 45 through a hinge, and one end of the linkage rod 46 away from the mounting sleeve 45 is hinged to the middle part of the rib 47.

[0029] When in use, the motor 41 is started, driving the screw 42 to rotate, the screw 42 drives the driving block 43 to move downward, the driving block 43 drives the connecting plate 44 to move downward, the connecting plate 44 drives the installation sleeve 45 to move downward, the installation sleeve 45 drives the linkage rod 46 to move downward, and the linkage rod 46 drives the umbrella ribs 47 to flip outward while moving downward, thereby driving the umbrella cover 48 to open, forming an umbrella-shaped structure, to collect the water mist and the dust carried by the upper spray device 3 when it is working, to prevent the water mist from falling to the ground and causing the ground to be wet, and the umbrella-shaped structure set up at the same time can also form a uniform velocity field to prevent dust particles from escaping, and when not in use, the umbrella cover 48 can be folded up, thereby reducing the volume of the entire device, which is convenient for later transportation and storage.

[0030] See also Figure 2 and Figure 3 As shown, the spray device 3 includes a plurality of horizontal plates 32 evenly distributed on the top of the outer surface of the column 2 and a second water pump 39 installed in the water storage chamber 24. A sector gear 33 is fixedly installed at one end of the horizontal plate 32 close to the column 2. A fixing plate 31 is provided on both sides of the sector gear 33. The sector gear 33 is rotatably installed between the two fixing plates 31 through a rotating rod. One end of the fixing plate 31 is fixedly connected to the outer surface of the column 2. A mounting plate 35 is fixedly installed on both sides of the bottom of the horizontal plate 32. A fixed plate 35 is fixedly installed between the two mounting plates 35. A water spray pipe 36 is provided with a plurality of nozzles 38 at the bottom of the water spray pipe 36. A slide groove is provided at one end of the two fixed plates 31 close to each other. A tooth plate 34 is slidably connected in the two slide grooves. The sector gear 33 is meshed with the tooth plate 34. A plurality of delivery pipes 310 are fixedly installed at the output end of the second water pump 39. The delivery pipe 310 passes through the column 2 and is fixedly installed with a hose 37. The hose 37 is connected to the water spray pipe 36. A support plate 14 is fixedly connected to the bottom of the tooth plate 34. The bottom of the support plate 14 is fixedly connected to the top of the mounting sleeve 45 below.

[0031] When in use, in the initial state, the cross plate 32 is in a vertical state. During the opening process of the collecting device 4, the mounting sleeve 45 moves downward, driving the support plate 14 to move downward, and the support plate 14 drives the tooth plate 34 to move downward. The downward movement of the tooth plate 34 drives the fan gear to rotate, thereby driving the cross plate 32 to rotate and expand outward. When the mounting sleeve 45 moves to the bottom, the cross plate 32 rotates from a vertical state to a horizontal state. The unfolding and folding of the cross plate 32 and the folding of the umbrella surface 48 do not conflict, thereby expanding the spraying range of the nozzle 38, thereby expanding the dust reduction range and improving the dust reduction efficiency. Then the second water pump 39 transports the water in the water storage chamber 24 to the hose 37 through the water pipe, and the hose 37 transports the water to the water spray pipe 36. Then, water mist is sprayed from the nozzle 38 at the bottom of the water spray pipe 36, so that the water mist combines with the dust in the air, increases the weight of the dust, and causes the dust to fall into the collecting device 4 below.

[0032] See also Figure 2 As shown, a first water pump 15 is fixedly installed on the bottom wall of the collecting chamber 102, and a connecting pipe 13 is fixedly installed on the output end of the first water pump 15. The upper end of the connecting pipe 13 passes through the mounting plate 8 and the cylinder 1 and extends upward close to the surface of the column 2 and then passes through and extends into the water storage chamber 24. The connecting pipe 13 does not affect the rotation of the umbrella cover 48 and the up and down movement of the mounting sleeve 45. The water mist is then separated into gas and liquid through the hydrophobic microporous membrane 10, and the water remains in the collecting chamber 102. Then, it is re-transported to the water storage chamber 24 through the first water pump 15 for reuse, which effectively avoids the waste of water resources. Re-collecting the water mist can improve the utilization rate and reduce waste, so that the device has the advantages of energy saving and environmental protection, and is more in line with the needs of current social development.

[0033] See also Figure 5 As shown, the inner wall of the air intake cavity 21 is installed with a spiral guide rib 16, which is streamlinedly welded or embedded on the inner wall of the air intake cavity 21. The spiral structure guides the airflow to rotate, generates centrifugal force, pushes the airflow to the center of the pipeline, reduces boundary layer separation, reduces wall friction resistance, and maintains high-speed core flow.

[0034] See also Figure 5 As shown, the density of the air inlet holes 211 on the surface of the column 2 decreases from top to bottom, and the hole diameter also decreases gradually. A preferred embodiment is provided, in the top section: dense openings (such as 15-20 holes per meter, hole diameter 8mm), so that a large amount of gas enters from the top, forming an initial high flow rate, the middle section: the opening density is halved (8-10 holes per meter, hole diameter 6mm), replenishing the air flow but avoiding excessive dilution of downstream kinetic energy, the bottom section: minimize the openings (3-5 holes per meter, hole diameter 4mm), reduce the end gas interference, and concentrate the outlet flow rate.

[0035] See also Figure 5As shown, a guide vane 18 obliquely downward is installed in the middle of the air inlet 211 to ensure that the direction of external air entering is consistent with the main airflow and reduce turbulence caused by the lateral velocity component.

[0036] See also Figure 2 As shown, a centrifugal fan 6 is fixedly installed in the middle of the air suction chamber 21 to balance the pressure gradient and prevent the upstream air flow speed from being insufficient, which affects the speed of external air entering the air suction chamber 21 and further affects the collection of water mist.

[0037] See also Figure 1 As shown, a flexible solar panel 19 is arranged on the surface of the column 2 to provide auxiliary power for the first water pump 15, the second water pump 39, the fan, etc., to reduce external energy consumption and improve the applicability of the device in an off-grid environment.

[0038] The working principle of the present invention is as follows: when in use, the motor 41 is started, driving the screw 42 to rotate, the screw 42 drives the driving block 43 to move downward, the driving block 43 drives the connecting plate 44 to move downward, the connecting plate 44 drives the installation sleeve 45 to move downward, the installation sleeve 45 drives the linkage rod 46 to move downward, and the linkage rod 46 drives the umbrella rib 47 to flip outward while moving downward, thereby driving the umbrella surface 48 to open, forming an umbrella-shaped structure, the installation sleeve 45 drives the support plate 14 to move downward while moving downward, the support plate 14 drives the tooth plate 34 to move downward, and the tooth plate 34 moves downward. The fan gear is driven to rotate, thereby driving the horizontal plate 32 to rotate and expand outward. When the installation sleeve 45 moves to the lowest position, the horizontal plate 32 rotates from a vertical state to a horizontal state. The second water pump 39 transports the water in the water storage chamber 24 to the hose 37 through the water pipe. The hose 37 transports the water to the water spray pipe 36, and then sprays water mist from the nozzle 38 at the bottom of the water spray pipe 36, so that the water mist combines with the dust in the air, increases the weight of the dust, and makes the dust fall onto the umbrella-shaped umbrella surface 48 below. At the same time, the high-pressure axial flow fan 5 is started to provide a strong negative pressure to attract the gas to flow downward, and directly The outlet airflow is then accelerated, and negative pressure is generated in the air intake chamber 21. The sprayed water mist gathers in the middle, thereby preventing the water mist from spreading outward, and then enters the air intake chamber 21 through the set air inlet hole 211, and then enters the collecting chamber 102 driven by the high-pressure axial flow fan. When the high-pressure water mist passes through the filter screen 9, the filter screen 9 filters the dust in the water mist, and then the clean water mist enters the bottom of the collecting chamber 102, and passes through the hydrophobic microporous membrane 10 under the action of the wind pressure generated by the high-pressure axial flow fan 5. The liquid water cannot pass through the membrane pores due to surface tension, and forms droplets that are trapped on the membrane surface and gathered to the collecting At the bottom of the cavity 102, air passes through the membrane holes under pressure to achieve gas-liquid separation, and then is discharged to the outside through the exhaust port 103. The water collected in the collection cavity 102 is re-transported to the water storage cavity 24 through the first water pump 15 for use in the spray device 3. Water resources can be reused, making the device energy-saving and environmentally friendly, and more in line with the needs of current social development. While completing the dust reduction work on the construction site, it avoids mud on the ground due to water mist, and performs dust reduction and adsorption on the construction environment of the construction site, thereby improving the environmental protection and construction safety of the construction environment of the construction site.

[0039] The present invention realizes the collection, solid-liquid separation and gas-liquid separation of water mist through an umbrella-shaped collecting device 4, a filter screen 9 and a hydrophobic microporous membrane 10, thereby solving the problems of muddy ground and waste of water resources caused by traditional fog cannon dust reduction, and has outstanding environmental protection performance; a water recycling mechanism (water storage chamber 24→spraying device 3→collecting chamber 102→water storage chamber 24) is provided to form a closed loop, which significantly reduces the consumption of water resources; the spiral guide ribs 16 and the gradient-distributed air inlet holes 211 (density and aperture decrease) in the air intake chamber 21 are combined with the honeycomb rectifying grid 17 to reduce turbulence and improve the negative pressure adsorption efficiency; the high-pressure axial flow fan 5 and the centrifugal fan 6 work together to balance the air flow pressure and enhance the water mist gathering effect; the umbrella-shaped collecting device 4 realizes automatic unfolding / folding through a screw 42-driving block 43-linking rod 46, which saves space and is convenient to operate; the spraying device 3 is linked with the tooth plate 34 through a fan gear 33, and the angle of the nozzle 38 is synchronously adjusted as the umbrella surface 48 unfolds, thereby expanding the dust reduction range.

[0040] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dust suppression device for a construction site, comprising a cylinder (1), characterized in that: A column (2) is fixedly mounted in the middle of the upper end of the cylinder (1), a collecting device (4) is mounted in the middle of the outer surface of the column (2), a spray device (3) is mounted on the top of the outer surface of the column (2), a water storage chamber (24), an activity chamber (23), an equipment chamber (22) and an air suction chamber (21) are mounted in sequence from top to bottom inside the column (2), a partition tube (7) is fixedly mounted inside the cylinder (1), the partition tube (7) divides the internal chamber of the cylinder (1) into a collecting chamber (102) and an exhaust chamber (101) distributed inside and outside, the bottom of the air suction chamber (21) is connected to the top of the collecting chamber (102), and a mounting plate is fixedly mounted in the middle and upper part of the inner wall of the collecting chamber (102). (8), a first mounting opening (81) is provided in the middle of the mounting plate (8), a filter screen (9) is installed inside the first mounting opening (81), a plurality of second mounting openings (71) connected to the exhaust chamber (101) are provided in the middle and lower part of the inner wall of the collecting chamber (102), a hydrophobic microporous membrane (10) is installed in the second mounting opening (71), a plurality of air inlet holes (211) are provided in sequence from top to bottom on the side wall of the air intake chamber (21), a high-pressure axial flow fan (5) is fixedly installed at the bottom of the inner wall of the air intake chamber (21), a plurality of exhaust openings (103) are provided on the outer surface of the exhaust chamber (101), and a honeycomb rectifying grid (17) is fixedly installed at the bottom of the air intake chamber (21).

2. A dust suppression device for construction sites according to claim 1, characterized in that: The collecting device (4) comprises a motor (41), a mounting sleeve (45) and an umbrella rib (47); the motor (41) is fixedly mounted in the equipment cavity (22); the output end of the motor (41) extends through the active cavity (23) and is fixedly mounted with a screw rod (42); the inner wall of the active cavity (23) is evenly provided with a plurality of limiting grooves (231); the mounting sleeve (45) slides up and down on the outer surface of the column (2); the outer surface of the screw rod (42) is threadedly connected with a driving block (43); the outer surface of the driving block (43) is evenly distributed and fixedly mounted with a plurality of connecting plates (44); the connecting plates (44) are fixedly mounted with the connecting plates (44) and ... The connecting plate (44) passes through the limiting groove (231) and is fixedly connected to the mounting sleeve (45); the connecting plate (44) is slidably connected to the limiting groove (231); a plurality of ribs (47) are provided; each rib (47) is evenly distributed and rotatably mounted on the middle and lower part of the outer surface of the column (1) through a hinge; an umbrella surface (48) is fixedly mounted between adjacent ribs (47); a plurality of linkage rods (46) opposite to the ribs (47) are rotatably connected to the outer surface of the mounting sleeve (45) through a hinge; and one end of the linkage rod (46) away from the mounting sleeve (45) is hinged to the middle part of the rib (47).

3. A dust suppression device for construction sites according to claim 2, characterized in that: A fixed tube (11) is fixedly mounted on the upper end of the cylinder (1), the fixed tube (11) is sleeved on the outside of the column (2), a conical tube (12) is fixedly mounted on the upper end of the fixed tube (11), the inner edge of the umbrella cover (48) is located inside the conical tube (12), a collecting groove is formed between the fixed tube (11) and the column (2), and a through hole (212) communicating with the bottom wall of the collecting groove is opened on the outer surface of the air suction cavity (21).

4. A dust suppression device for construction sites according to claim 3, characterized in that: The spray device (3) comprises a plurality of transverse plates (32) evenly distributed on the top of the outer surface of the column (2) and a second water pump (39) installed in the water storage chamber (24); a sector gear (33) is fixedly installed on one end of the transverse plate (32) close to the column (2); fixed plates (31) are provided on both sides of the sector gear (33); the sector gear (33) is rotatably installed between the two fixed plates (31) via a rotating rod; one end of the fixed plate (31) is fixedly connected to the outer surface of the column (2); and mounting plates (31) are fixedly installed on both sides of the bottom of the transverse plate (32). 35), a water spray pipe (36) is fixedly installed between the two mounting plates (35), a plurality of nozzles (38) are arranged at the bottom of the water spray pipe (36), a sliding groove is provided at one end of the two fixing plates (31) close to each other, a tooth plate (34) is slidably connected in the two sliding grooves, the sector gear (33) is meshed with the tooth plate (34), a plurality of delivery pipes (310) are fixedly installed at the output end of the second water pump (39), the delivery pipe (310) passes through the column (2) and is fixedly installed with a hose (37), and the hose (37) is connected to the water spray pipe (36).

5. A dust suppression device for construction sites according to claim 4, characterized in that: The bottom of the toothed plate (34) is fixedly connected to a support plate (14), and the bottom of the support plate (14) is fixedly connected to the top of a mounting sleeve (45) below.

6. A dust suppression device for construction sites according to claim 1, characterized in that: A first water pump (15) is fixedly mounted on the bottom wall of the collecting chamber (102); a connecting pipe (13) is fixedly mounted on the output end of the first water pump (15); the upper end of the connecting pipe (13) passes through the mounting plate (8) and the cylinder (1) and extends upwards in close contact with the surface of the column (2) and then passes through and extends into the water storage chamber (24); the connecting pipe (13) does not affect the rotation of the umbrella cover (48) and the up and down movement of the mounting sleeve (45).

7. A dust suppression device for construction sites according to claim 1, characterized in that: The inner wall of the air suction cavity (21) is provided with a spiral flow guide rib (16).

8. The dust suppression device for construction sites according to claim 1, characterized in that: The density of the air inlet holes (211) opened on the surface of the pillar (2) decreases from top to bottom, and the hole diameters also gradually decrease.

9. A dust suppression device for construction sites according to claim 1, characterized in that: A guide plate (18) obliquely downward is installed in the middle of the air inlet (211).

10. A dust suppression device for construction sites according to claim 1, characterized in that: A centrifugal fan (6) is fixedly installed in the middle of the air suction chamber (21).

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