A dust suppression device for municipal building construction

Abstract

The present invention relates to the technical field of construction dust reduction, and in particular to a dust reduction device for municipal building construction, comprising a support base plate with adjustable position, a negative pressure dust reduction structure being arranged on the support base plate, the negative pressure dust reduction structure comprising a pair of negative pressure dust reduction plates which are respectively arranged on both sides of the upper end of the support base plate and can revolve around an axis and rotate at the same time, the negative pressure dust reduction plates comprising a fan disk and an arc-shaped cylinder which is integrally arranged with the fan disk, the arc-shaped cylinder being provided with a plurality of atomizing components corresponding to the fan disk, the support base plate being further provided with a dust recovery liquid structure which matches the negative pressure dust reduction structure, the dust recovery liquid structure comprising a pair of collecting plates which are respectively arranged at the lower ends of the negative pressure dust reduction plates and can separate liquid and dust particles, effectively solving the problems in the prior art of being unable to achieve a good adsorption effect on surrounding dust and lacking the collection of water mist contaminated with dust particles, and being unable to achieve a dust removal effect.

Description

Technical Field

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

[0002] Construction refers to production activities during the implementation phase of construction projects. It is the process of building various types of buildings. It can also be said to be the process of turning various lines on the design drawings into physical objects at designated locations. It includes foundation construction, main structure construction, roofing construction, decoration construction, etc. The place of construction is called "construction site" or "construction site", also called construction site. Earthwork is one of the main projects in construction projects. The development of earthwork on the construction site will lead to a high dust content in the working environment. The working environment is greatly affected by dust. In order to reduce the impact of dust on work and the safety of construction personnel, dust reduction equipment is usually set up at the construction site to deal with dust.

[0003] The application number is 202410840403.0, and the patent name is a dust reduction device for a construction site. Through a rotating support frame, when the sliding frame rotates with the support frame, it also drives the fan blades to rotate, and blows air from the top of the device to the bottom of the device, creating negative pressure in the center of the device, thereby absorbing the surrounding dust.

[0004] But there are still some shortcomings: 1. The fan blades have a small range of movement, and the negative pressure range they generate is limited, so they cannot have a good adsorption effect on the surrounding dust.

[0005] 2. Although the dust particles can be concentratedly dropped, there is a lack of collection of water mist contaminated with dust particles, and the dust cannot be removed. In addition, the traditional circular rotating spraying causes the ground in a large area of ​​the construction site to become sticky and wet, affecting the normal progress of the construction. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a dust reduction device for municipal building construction, which effectively solves the problems in the prior art that the surrounding dust cannot be adsorbed well and the water mist contaminated with dust particles is lacking, resulting in the inability to remove dust.

[0007] To achieve the above object, the present invention adopts the following technical solutions: A dust reduction device for municipal building construction, including a support base plate with adjustable position, a negative pressure dust reduction structure is arranged on the support base plate, the negative pressure dust reduction structure includes a pair of negative pressure dust reduction plates respectively arranged on both sides of the upper end of the support base plate and capable of revolving around an axis and rotating at the same time, the negative pressure dust reduction plate includes a fan disk and an arc-shaped cylinder integrally arranged with the fan disk, the arc-shaped cylinder is provided with a plurality of atomizing components corresponding to the fan disk, the support base plate is also provided with a dust recovery liquid structure matched with the negative pressure dust reduction structure, the dust recovery liquid structure includes a pair of collecting plates respectively arranged at the lower ends of the negative pressure dust reduction plates and capable of separating liquid and dust particles.

[0008] Preferably, the negative pressure dust reduction structure also includes a motor arranged at the lower end of the supporting base plate, the output end of the motor is fixedly connected to a rotating rod, the lower end of the rotating rod is sleeved with a second fixed cylinder fixedly connected to the supporting base plate, the upper end of the second fixed cylinder is provided with a third fixed cylinder, a reinforcing rib plate is provided between the third fixed cylinder and the second fixed cylinder for fixed connection, the upper end of the third fixed cylinder is fixedly connected to a box body, a second main bevel gear fixedly connected to the rotating rod is rotatably arranged in the box body, the two ends of the second main bevel gear are respectively meshed with a second sub-bevel gear and a third sub-bevel gear, and a rotating cylinder is coaxially arranged between the second sub-bevel gear and the third sub-bevel gear.

[0009] Preferably, the second secondary bevel gear and the third secondary bevel gear are respectively fixedly connected to a first conduit and a second conduit rotatably arranged with the box body, and one end of the first conduit and the second conduit are both sealed and rotatably arranged on the rotating drum.

[0010] Preferably, the first duct and the second duct are respectively sleeved with a first fixed tube fixedly connected to the box body, the other end of the first fixed tube is fixedly connected to the first secondary bevel gear, the other ends of the first duct and the second duct are respectively fixedly connected to a coupling block, one end of the coupling block is provided with a supporting duct, the negative pressure dust suppression plate is rotatably provided on the supporting duct, the negative pressure dust suppression plate is coaxially fixedly provided with a first main bevel gear meshing with the first secondary bevel gear, and a plurality of fan blades are also provided on the fan disc.

[0011] Preferably, a second liquid inlet pipe connected to the rotating drum is provided at the upper end of the box body, a water pump connected to the second liquid inlet pipe is provided at one end of the box body, a water tank is also provided at the upper end of the supporting bottom plate, and a first liquid inlet pipe connected to the water pump is provided in the water tank.

[0012] Preferably, the dust suction and liquid recovery structure also includes a first spur gear arranged in the reinforcing rib plate and fixedly connected to the rotating rod, the first spur gear is meshed with a second spur gear rotatably connected to the supporting base plate, a fixing pin is provided at a non-center portion of the second spur gear, a slide rod corresponding to the fixing pin is slidably provided at the upper end of the second spur gear, and pneumatic rods are respectively fixedly connected at both ends of the slide rod, a pair of fixed plates are respectively provided on the side walls of the water tank, a pneumatic cylinder is fixedly provided in the fixed plate, and a pneumatic disk connected to the pneumatic rod is slidably provided in the pneumatic cylinder.

[0013] Preferably, the air pressure cylinder is respectively provided with a first one-way valve and a second one-way valve, the first one-way valve is provided with a first recovery pipe, one end of the first recovery pipe is installed with the collection tray, an adsorption filter plate is provided in the collection tray, the second one-way valve is provided with a second recovery pipe, and the other end of the second recovery pipe is provided on the water tank.

[0014] Preferably, a plurality of universal wheels are respectively provided at the lower ends of the supporting base plates.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a negative pressure dust reduction structure, and the negative pressure dust reduction plates on both sides of the upper end of the supporting bottom plate revolve around the axis and rotate at the same time. The fan disc can generate negative pressure on the surroundings during the revolution around the axis, and the dust around the construction site is adsorbed toward the negative pressure dust reduction plates. At the same time, the negative pressure dust reduction plates rotate on themselves, and the position of the fan disc rotating around the axis is adjusted, so that the surrounding dust at different directions can be intermittently adsorbed with strong pressure. At the same time, the atomizing component on the arc cylinder sprays water mist to concentrate the dust adsorbed from the surroundings. Moreover, since the atomizing component and the fan disc are in opposite positions of rotation around the axis, the atomizing component can quickly spray the dust attracted by the fan disc. Compared with large-scale circular spraying, the concentrated spraying by negative pressure attraction can effectively prevent the sprayed water mist from causing the ground in a large area of ​​the construction site to be sticky and wet, thereby affecting the normal progress of construction.

[0016] 2. By setting up a dust recovery liquid structure, the water mist containing dust in the concentrated dust reduction can fall down in a concentrated manner. In conjunction with the dust recovery liquid structure, the collection plate can intermittently generate negative pressure to suck the water mist containing dust into the collection plate for removal. The collection plate can filter the dust particles in the water mist and recycle the water, which can effectively save water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first axonometric view of a dust suppression device for municipal building construction of the present invention; Figure 2 A second axonometric view of a dust suppression device for municipal building construction according to the present invention; Figure 3 It is a structural schematic diagram of a negative pressure dust suppression structure of a dust suppression device for municipal building construction of the present invention; Figure 4 It is a schematic structural diagram of a first conduit and a second conduit of a dust suppression device for municipal building construction according to the present invention; Figure 5 A schematic structural diagram of a negative pressure dust suppression plate of a dust suppression device for municipal building construction according to the present invention; Figure 6 It is a schematic structural diagram of a reinforcing rib plate of a dust suppression device for municipal building construction according to the present invention; Figure 7 It is a structural schematic diagram of a dust suction and liquid recovery structure of a dust suppression device for municipal building construction according to the present invention; Figure 8 It is a structural schematic diagram of an air pressure plate of a dust suppression device for municipal building construction of the present invention; Fig. 9 It is a schematic diagram of the structure of a collection plate of a dust suppression device for municipal building construction according to the present invention; Fig.10 It is a schematic diagram of the structure of the fan blades of a dust suppression device for municipal building construction of the present invention; Fig.11 A dust suppression device for municipal construction construction of the present invention Figure 3 A partial enlarged view of area A; In the figure: 1, water tank, 2, supporting bottom plate, 3, universal wheel, 4, box body, 5, second liquid inlet pipe, 6, water pump, 7, first liquid inlet pipe, 8, first fixed cylinder, 9, fan disc, 10, arc cylinder, 11, first main bevel gear, 12, first sub-bevel gear, 13, first recovery pipe, 14, collecting plate, 15, adsorption filter plate, 16, fan blade, 17, atomization component, 18, motor, 19, third fixed cylinder, 20, rotating rod, 21, first straight gear, 22 , coupling block, 23, first conduit, 24, second main bevel gear, 25, second secondary bevel gear, 26, third secondary bevel gear, 27, rotating cylinder, 28, second conduit, 29, second spur gear, 30, fixed pin, 31, slide rod, 32, air cylinder, 33, fixed plate, 34, air pressure plate, 35, air pressure rod, 36, second one-way valve, 37, first one-way valve, 38, second recovery pipe, 39, second fixed cylinder, 40, reinforcing rib plate, 41, supporting conduit. DETAILED DESCRIPTION

[0018] like Figure 1-11As shown, a dust reduction device for municipal building construction includes a support base plate 2 with adjustable position, a negative pressure dust reduction structure is arranged on the support base plate 2, the negative pressure dust reduction structure includes a pair of negative pressure dust reduction plates respectively arranged on both sides of the upper end of the support base plate 2 and capable of orbiting around an axis and rotating at the same time, the negative pressure dust reduction plate includes a fan disk 9 and an arc-shaped cylinder 10 integrally arranged with the fan disk 9, a plurality of atomizing components 17 corresponding to the fan disk 9 are arranged on the arc-shaped cylinder 10, and a dust recovery liquid structure matched with the negative pressure dust reduction structure is also arranged on the support base plate 2, the dust recovery liquid structure includes a pair of collecting plates 14 respectively arranged at the lower ends of the negative pressure dust reduction plates and capable of separating liquid and dust particles.

[0019] When the present invention is in use, the device is moved to the construction site. When dust reduction is needed on the construction site, the negative pressure dust reduction structure is controlled to work, and the negative pressure dust reduction plates on both sides of the upper end of the supporting bottom plate 2 revolve around the axis while rotating on their own. The fan disc 9 can generate negative pressure on the surroundings during the process of revolving around the axis, so that the dust around the construction site is adsorbed toward the negative pressure dust reduction plates. At the same time, the negative pressure dust reduction plates rotate on their own, and the position of the fan disc 9 rotating around the axis is adjusted, so that the surrounding dust at different directions can be intermittently adsorbed with strong pressure. At the same time, the atomizing component 17 on the arc-shaped cylinder 10 sprays water mist to concentrate the dust adsorbed from the surroundings. Dust, and because the atomizing component 17 and the fan disk 9 are in opposite positions of rotation around the axis, the atomizing component 17 can quickly spray the dust attracted by the fan disk 9. Compared with large-scale circular spraying, the concentrated spraying by negative pressure attraction can effectively avoid the sprayed water mist causing the ground in a large area of ​​the construction site to become sticky and wet, affecting the normal progress of the construction. The water mist entrained with dust in the concentrated dust reduction can fall in a concentrated manner. In conjunction with the dust recovery liquid structure, the collecting plate 14 can intermittently generate negative pressure to suck the water mist entrained with dust into the collecting plate 14. The collecting plate 14 can filter the dust particles in the water mist, recycle the water for reuse, and effectively save water resources.

[0020] The negative pressure dust reduction structure also includes a motor 18 arranged at the lower end of the supporting base plate 2, and the output end of the motor 18 is fixedly connected to a rotating rod 20, and the lower end of the rotating rod 20 is sleeved with a second fixed cylinder 39 fixedly connected to the supporting base plate 2, and the upper end of the second fixed cylinder 39 is provided with a third fixed cylinder 19, and a reinforcing rib plate 40 is provided between the third fixed cylinder 19 and the second fixed cylinder 39 for fixed connection, and the upper end of the third fixed cylinder 19 is fixedly connected to a box body 4, and a second main bevel gear 24 fixedly connected to the rotating rod 20 is rotatably arranged in the box body 4, and the two ends of the second main bevel gear 24 are respectively meshed with a second sub-bevel gear 25 and a third sub-bevel gear 26, and a rotating cylinder 27 is coaxially arranged between the second sub-bevel gear 25 and the third sub-bevel gear 26.

[0021] like Figure 3As shown, the motor 18 is working, the output end of the motor 18 drives the rotating rod 20 to rotate, the rotating rod 20 drives the second main bevel gear 24 to rotate, the second main bevel gear 24 drives the second sub-bevel gear 25 and the third sub-bevel gear 26 to rotate respectively, and the second fixed cylinder 39 cooperates with the reinforcing rib plate 40 and the third fixed cylinder 19 to support and fix the box body 4.

[0022] The second auxiliary bevel gear 25 and the third auxiliary bevel gear 26 are respectively fixedly connected to a first conduit 23 and a second conduit 28 rotatably arranged with the box body 4 . One end of the first conduit 23 and the second conduit 28 are both sealed and rotatably arranged on the rotating drum 27 .

[0023] like Figure 4 As shown, the second sub-bevel gear 25 and the third sub-bevel gear 26 respectively drive the first conduit 23 and the second conduit 28 to rotate during the rotation process, and the two ends of the rotating drum 27 respectively support and limit the first conduit 23 and the second conduit 28, and the rotating drum 27 is respectively connected to the first conduit 23 and the second conduit 28 to facilitate the circulation of spray water.

[0024] The first conduit 23 and the second conduit 28 are respectively sleeved with a first fixed tube 8 fixedly connected to the box body 4, the other end of the first fixed tube 8 is fixedly connected to the first secondary bevel gear 12, the other ends of the first conduit 23 and the second conduit 28 are respectively fixedly connected to the coupling block 22, one end of the coupling block 22 is provided with a supporting conduit 41, the negative pressure dust suppression plate is rotatably provided on the supporting conduit 41, the negative pressure dust suppression plate is coaxially fixedly provided with a first main bevel gear 11 meshing with the first secondary bevel gear 12, and a plurality of fan blades 16 are also provided on the fan disk 9.

[0025] like Figure 3 and 5 As shown, the first fixed cylinder 8 supports and fixes the first secondary bevel gear 12. The first conduit 23 and the second conduit 28 respectively drive the coupling block 22 to rotate during the rotation process. The coupling block 22 drives the supporting conduit 41 to rotate in a circle. The supporting conduit 41 drives the negative pressure dust suppression plate to rotate in a circle with the first conduit 23 and the second conduit 28 as the axis. The negative pressure dust suppression plate drives the first main bevel gear 11 to rotate in a circle during the circular rotation around the axis. Since the position of the first secondary bevel gear 12 is fixed, the first main bevel gear 11 drives the first main bevel gear 11 to rotate by meshing with the first secondary bevel gear 12 during the circular rotation. The first main bevel gear 11 drives the negative pressure dust suppression plate to rotate by itself. The negative pressure dust suppression plate drives the fan blades 16 to rotate. The position of the fan disc 9 rotating around the axis can also be adjusted, and the surrounding dust at different directions can be intermittently adsorbed with strong pressure. The fan disc 9 can generate negative pressure around the surrounding area in cooperation with the rotation of the fan blades 16 during the revolution around the axis, and the dust near the construction site is adsorbed toward the negative pressure dust suppression plate.

[0026] A second liquid inlet pipe 5 connected to the rotating drum 27 is provided at the upper end of the box body 4, a water pump 6 connected to the second liquid inlet pipe 5 is provided at one end of the box body 4, a water tank 1 is also provided at the upper end of the supporting base plate 2, and a first liquid inlet pipe 7 connected to the water pump 6 is provided in the water tank 1.

[0027] like Figure 3 and 4 As shown, the water pump 6 is working, and the water in the water tank 1 is sucked in through the first liquid inlet pipe 7 by the water pump 6 and then discharged into the drum 27 through the second liquid inlet pipe 5, and then divided into the first conduit 23 and the second conduit 28 by the drum 27.

[0028] The dust suction and liquid recovery structure also includes a first spur gear 21 arranged in the reinforcing rib plate 40 and fixedly connected to the rotating rod 20, the first spur gear 21 is meshed with a second spur gear 29 rotatably connected to the supporting base plate 2, a fixing pin 30 is arranged at a non-center portion of the second spur gear 29, a slide rod 31 corresponding to the fixing pin 30 is slidably arranged at the upper end of the second spur gear 29, and pneumatic rods 35 are fixedly connected at both ends of the slide rod 31, and a pair of fixed plates 33 are respectively arranged on the side walls of the water tank 1, a pneumatic cylinder 32 is fixedly arranged in the fixed plate 33, and a pneumatic disk 34 connected to the pneumatic rod 35 is slidably arranged in the pneumatic cylinder 32.

[0029] like Figure 6 and 7 As shown in 8, the rotating rod 20 drives the first spur gear 21 to rotate, the first spur gear 21 drives the second spur gear 29 to rotate, the second spur gear 29 drives the fixed pin 30 to rotate in a circle, and the fixed pin 30 drives the slide rod 31 to slide back and forth along the upper end surface of the second spur gear 29 during the circular rotation. The slide rod 31 drives the pneumatic rods 35 at both ends to reciprocate respectively, and the pneumatic rods 35 drive the pneumatic plate 34 to slide back and forth in the pneumatic cylinder 32, thereby generating negative pressure in the pneumatic cylinder 32.

[0030] The air pressure cylinder 32 is respectively provided with a first one-way valve 37 and a second one-way valve 36, the first one-way valve 37 is provided with a first recovery pipe 13, one end of the first recovery pipe 13 is installed with the collection tray 14, the collection tray 14 is provided with an adsorption filter plate 15, the second one-way valve 36 is provided with a second recovery pipe 38, and the other end of the second recovery pipe 38 is provided on the water tank 1.

[0031] like Figure 2As shown, the negative pressure in the air cylinder 32 is transmitted to the first recovery pipe 13 in one direction through the first one-way valve 37, and the negative pressure is transmitted to the collecting plate 14 by the first recovery pipe 13. The negative pressure generated in the collecting plate 14 is used to attract the water mist into the air cylinder 32, and then the air cylinder 32 transmits the water mist to the second recovery pipe 38 in one direction through the second one-way valve 36. The recovered water flows into the water tank 1 through the second recovery pipe 38, thereby realizing the recycling of the atomized water, and the adsorption filter plate 15 can adsorb the dust particles in the water mist to ensure the cleanliness of the recovered water. The adsorption filter plate 15 can be disassembled to clean the dust filtered on the adsorption filter plate 15.

[0032] A plurality of universal wheels 3 are respectively provided at the lower ends of the supporting base plate 2 .

[0033] like Figure 2 As shown, the universal wheel 3 is used to facilitate the movement of the device.

[0034] The working process of the present invention is as follows: when the present invention is in use, the device is moved to the construction site. When dust reduction is required on the construction site, the motor 18 works, and the output end of the motor 18 drives the rotating rod 20 to rotate. The rotating rod 20 drives the second main bevel gear 24 to rotate, and the second main bevel gear 24 drives the second sub-bevel gear 25 and the third sub-bevel gear 26 to rotate respectively. The second sub-bevel gear 25 and the third sub-bevel gear 26 respectively drive the first conduit 23 and the second conduit 28 to rotate during the rotation process. The two ends of the rotating drum 27 respectively support and limit the first conduit 23 and the second conduit 28, and the rotating drum 27 is respectively connected with the first conduit 23 and the second conduit 28, which is convenient for the circulation of spraying water. The water pump 6 works, and the water in the water tank 1 is sucked in by the first liquid inlet pipe 7 by the water pump 6 and then discharged into the rotating drum 27 by the second liquid inlet pipe 5, and the water is diverted by the rotating drum 27 into the first conduit 23 and the second conduit 28.

[0035] The first duct 23 and the second duct 28 respectively drive the coupling block 22 to rotate during the rotation process, and the coupling block 22 drives the supporting duct 41 to rotate in a circle. The supporting duct 41 drives the negative pressure dust suppression plate to rotate in a circle with the first duct 23 and the second duct 28 as the axis. The fan disc 9 can generate negative pressure on the surroundings during the process of orbiting around the axis, and the dust around the construction site is adsorbed toward the negative pressure dust suppression plate. The negative pressure dust suppression plate drives the first main bevel gear 11 to rotate in a circle during the process of rotating around the axis. Since the position of the first sub-bevel gear 12 is fixed, the first main bevel gear 11 rotates in a circle during the process of rotating around the axis. During the process, it meshes with the first secondary bevel gear 12 to drive the first main bevel gear 11 to rotate, and the first main bevel gear 11 drives the negative pressure dust suppression plate to rotate, and the position of the fan disk 9 rotating around the axis is adjusted, so the surrounding dust at different directions can be intermittently adsorbed with strong pressure, and because the atomizing component 17 and the fan disk 9 are in opposite positions around the axis, the atomizing component 17 can quickly spray the dust attracted by the fan disk 9. Compared with large-scale circular spraying, the use of negative pressure suction concentrated spraying can effectively prevent the sprayed water mist from causing a large area of ​​the construction site to become sticky and wet, affecting the normal progress of construction.

[0036] The rotating rod 20 drives the first spur gear 21 to rotate, the first spur gear 21 drives the second spur gear 29 to rotate, the second spur gear 29 drives the fixed pin 30 to rotate in a circle, and the fixed pin 30 drives the slide rod 31 to slide back and forth along the upper end surface of the second spur gear 29 during the circumferential rotation of the fixed pin 30, and the slide rod 31 drives the air pressure rods 35 at both ends to reciprocate, and the air pressure rod 35 drives the air pressure plate 34 to slide back and forth in the air pressure cylinder 32, generating negative pressure in the air pressure cylinder 32. The negative pressure is transmitted to the first recovery pipe 13 in one direction through the first one-way valve 37, and the negative pressure is transmitted to the collecting plate 14 by the first recovery pipe 13. The negative pressure generated in the collecting plate 14 is used to attract the water mist into the air pressure cylinder 32, and then the air pressure cylinder 32 transmits the water mist to the second recovery pipe 38 in one direction through the second one-way valve 36. The recovered water flows into the water tank 1 through the second recovery pipe 38, so as to realize the recycling of the atomized water, and the adsorption filter plate 15 can adsorb the dust particles in the water mist.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust suppression device for municipal construction, comprising a support base plate (2) with adjustable position, characterized in that: A negative pressure dust reduction structure is arranged on the support base plate (2), and the negative pressure dust reduction structure comprises a pair of negative pressure dust reduction plates respectively arranged on both sides of the upper end of the support base plate (2) and capable of revolving around an axis and rotating at the same time, the negative pressure dust reduction plate comprises a fan disc (9) and an arc-shaped cylinder (10) integrally arranged with the fan disc (9), and the arc-shaped cylinder (10) is provided with a plurality of atomizing components (17) corresponding to the fan disc (9), and the support base plate (2) is also provided with a dust collection and recovery liquid structure matched with the negative pressure dust reduction structure, and the dust collection and recovery liquid structure comprises a pair of collection plates (14) respectively arranged at the lower ends of the negative pressure dust reduction plates and capable of separating liquid and dust particles.

2. A dust suppression device for municipal construction according to claim 1, characterized in that: The negative pressure dust reduction structure further comprises a motor (18) arranged at the lower end of the supporting base plate (2); the output end of the motor (18) is fixedly connected to a rotating rod (20); the lower end of the rotating rod (20) is sleeved with a second fixed cylinder (39) fixedly connected to the supporting base plate (2); the upper end of the second fixed cylinder (39) is provided with a third fixed cylinder (19); a reinforcing rib plate (40) is provided between the third fixed cylinder (19) and the second fixed cylinder (39) for fixed connection; the upper end of the third fixed cylinder (19) is fixedly connected to a box body (4); a second main bevel gear (24) fixedly connected to the rotating rod (20) is rotatably arranged in the box body (4); the second main bevel gear (24) is respectively meshed with a second secondary bevel gear (25) and a third secondary bevel gear (26); and a rotating cylinder (27) is coaxially arranged between the second secondary bevel gear (25) and the third secondary bevel gear (26).

3. A dust suppression device for municipal construction according to claim 2, characterized in that: The second secondary bevel gear (25) and the third secondary bevel gear (26) are respectively fixedly connected to a first conduit (23) and a second conduit (28) rotatably arranged with the box body (4); one end of each of the first conduit (23) and the second conduit (28) is sealed and rotatably arranged on the rotating drum (27).

4. A dust suppression device for municipal construction according to claim 3, characterized in that: The first duct (23) and the second duct (28) are respectively sleeved with a first fixed tube (8) fixedly connected to the box body (4); the other end of the first fixed tube (8) is fixedly connected to the first secondary bevel gear (12); the other ends of the first duct (23) and the second duct (28) are respectively fixedly connected to a coupling block (22); one end of the coupling block (22) is provided with a supporting duct (41); the negative pressure dust suppression plate is rotatably provided on the supporting duct (41); the negative pressure dust suppression plate is coaxially fixedly provided with a first main bevel gear (11) meshing with the first secondary bevel gear (12); and a plurality of fan blades (16) are also provided on the fan disc (9).

5. The dust suppression device for municipal construction according to claim 3, characterized in that: A second liquid inlet pipe (5) connected to the rotating drum (27) is disposed at the upper end of the box body (4); a water pump (6) connected to the second liquid inlet pipe (5) is disposed at one end of the box body (4); a water tank (1) is also disposed at the upper end of the supporting base plate (2); a first liquid inlet pipe (7) connected to the water pump (6) is disposed in the water tank (1).

6. A dust suppression device for municipal construction according to claim 5, characterized in that: The dust suction and liquid recovery structure also includes a first spur gear (21) arranged in the reinforcing rib plate (40) and fixedly connected to the rotating rod (20); the first spur gear (21) is meshed with a second spur gear (29) rotatably connected to the supporting base plate (2); a fixing pin (30) is arranged at a non-center position of the second spur gear (29); a slide rod (31) corresponding to the fixing pin (30) is slidably arranged at the upper end of the second spur gear (29); both ends of the slide rod (31) are respectively fixedly connected to a pneumatic rod (35); a pair of fixed plates (33) are respectively arranged on the side walls of the water tank (1); a pneumatic cylinder (32) is fixedly arranged in the fixed plate (33); and a pneumatic disk (34) connected to the pneumatic rod (35) is slidably arranged in the pneumatic cylinder (32).

7. A dust suppression device for municipal construction according to claim 6, characterized in that: The air pressure cylinder (32) is respectively provided with a first one-way valve (37) and a second one-way valve (36); the first one-way valve (37) is provided with a first recovery pipe (13); one end of the first recovery pipe (13) is installed with the collection tray (14); an adsorption filter plate (15) is provided in the collection tray (14); the second one-way valve (36) is provided with a second recovery pipe (38); the other end of the second recovery pipe (38) is provided on the water tank (1).

8. The dust suppression device for municipal construction according to claim 1, characterized in that: A plurality of universal wheels (3) are respectively arranged at the lower end of the supporting bottom plate (2).

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