A dust suppression device for construction

Abstract

The present application discloses a construction dust suppression device, which belongs to the field of spray dust suppression technology, and includes a chassis and a wind tube, a water tank is arranged on the base, a sealing cover is arranged at the opening of the water tank, one end of the sealing cover is fixedly connected with a rotating rod, and the two ends of the rotating rod are respectively rotatably connected to the inner walls of the two opposite ends of the opening of the water tank, a torsion spring is sleeved on the rotating rod, and the two ends of the torsion spring are respectively fixedly connected to the sealing cover and the water tank, and a limiting assembly for limiting the sealing cover is arranged on the water tank; a water pump is also installed on the chassis, and the water inlet of the water pump is connected to the water tank, and the water outlet of the water pump is connected to the water outlet of the wind tube. The present application has the effect of reducing the use of tap water, thereby reducing the waste of water resources.

Description

Technical Field

[0001] The present application relates to the technical field of spray dust reduction, and in particular to a dust reduction device for construction. Background Art

[0002] With the rapid development of urban construction, building construction is also increasing rapidly. A large amount of dust will be generated during the construction process, which has caused great damage to the environment and seriously affected the air quality. At present, fog cannons and other similar atomization equipment have been widely used on construction sites to reduce dust by spraying water mist, which has achieved certain results.

[0003] In the prior art, the fog cannon includes a machine base, a mounting frame arranged on the machine base, and a wind tube arranged on the mounting frame. A water outlet is arranged at one end of the wind tube. A high-pressure pump for pumping water to the water outlet is also arranged in the machine base. A fan for blowing out the water mist is also arranged in the wind tube. A rotating shaft is arranged on the lower end surface of the mounting frame. The mounting frame is rotatably connected to the machine base through the rotating shaft. The axis of the rotating shaft is arranged vertically. A driving component for driving the mounting frame to reciprocate along the rotating axis is also arranged on the machine base.

[0004] With respect to the above-mentioned related technologies, the inventor believes that most of the existing fog cannons directly use tap water for water supply, which may cause a waste of water resources. Summary of the invention

[0005] In order to reduce the use of tap water and thus reduce the waste of water resources, the present application provides a construction dust reduction device.

[0006] The present application provides a construction dust reduction device that adopts the following technical solution:

[0007] A dust suppression device for construction includes a chassis and an air duct, a water tank is arranged on the base, a sealing cover is arranged at the opening of the water tank, one end of the sealing cover is fixedly connected to a rotating rod, two ends of the rotating rod are respectively rotatably connected to the inner walls at two opposite ends of the opening of the water tank, a torsion spring is sleeved on the rotating rod, two ends of the torsion spring are respectively fixedly connected to the sealing cover and the water tank, a limiting assembly for limiting the sealing cover is provided on the water tank; a water pump is also installed on the chassis, a water inlet of the water pump is connected to the water tank, and a water outlet of the water pump is connected to the water outlet of the air duct.

[0008] By adopting the above technical solution, before it rains, the sealing cover is in an open state. When it rains, the water tank can collect rainwater. Then, when the water tank is full of rainwater, the staff can close the sealing cover and connect the sealing cover to the opening of the water tank through the limit assembly, so as to collect rainwater. Later, when it is necessary to use the fog cannon for spray dust reduction, the staff can turn on the water pump, and then the water pump can draw rainwater in the water tank for spray dust reduction, thereby reducing the use of tap water and reducing the waste of water resources.

[0009] Preferably, the limit assembly includes a limit block and a first spring, a side wall of the water tank is provided with a sliding groove, the limit block slides in the sliding groove, the limit block is provided with a first inclined surface, and the sealing cover is provided with a limit groove for the limit block to be inserted; the two ends of the first spring are respectively fixedly connected to the limit block and the inner wall of the sliding groove.

[0010] By adopting the above technical solution, when the staff rotates the sealing cover to close the sealing cover, the sealing cover can push the limit block through the first inclined surface on the limit block to overcome the elastic force of the first spring to move, and then when the sealing cover is rotated to the position corresponding to the sealing cover and the limit block, the elastic force of the first spring can push the limit block to be inserted into the limit groove, thereby reducing the possibility of separation between the sealing cover and the opening of the collection box.

[0011] Preferably, a driving plate is slidably disposed in the water tank, and a stretching assembly for pulling the driving plate is disposed in the water tank; a first storage slot is provided on the inner wall of the water tank, a driving block, a first gear and an abutting block are disposed in the first storage slot, the driving block is penetrated and slidably disposed on the inner wall of the first storage slot, a second inclined surface is disposed on the driving block, the first gear is rotatably disposed on the inner wall of the first storage slot, a first rack is fixedly connected to the driving block, the first rack is meshed with the first gear, the abutting block is slidably connected to the inner wall of the first storage slot, a second rack is fixedly connected to the abutting block, and the second rack is meshed with the first gear;

[0012] A push rod slides in the first storage groove, the push rod penetrates the inner wall of the sliding groove and is fixedly connected to the limit block, and a third inclined surface is provided at one end of the abutment block close to the push rod, and the abutment block can abut and cooperate with the push rod.

[0013] By adopting the above technical solution, before the collection box collects rainwater, the driving plate is located in the upper position inside the water tank under the action of the stretching assembly. Later, when the rainwater collected in the water tank gradually increases, the driving plate can move downward under the action of the gravity of the rainwater and move to the lower position of the driving block. Subsequently, when the staff uses the rainwater in the water tank to reduce dust, the rainwater in the water tank will gradually decrease. At this time, the gravity of the rainwater exerted on the driving plate also gradually decreases, and the driving plate can move upward under the action of the stretching assembly. The driving plate can push the driving block to move through the second inclined surface on the driving block, and the driving block can drive the first rack to move. The movement of the first rack can drive the first gear to rotate. The rotation of the first gear can drive the second rack to move. The second rack drives the abutment block to move. The abutment block can push the push rod to move in the direction away from the sealing cover through the third inclined surface. The movement of the push rod drives the limit block to move. Subsequently, when the limit block moves to a position away from the sealing cover, the limit of the sealing cover can be released, thereby reducing the difficulty of opening the sealing cover.

[0014] Preferably, the stretching assembly includes a tension spring and a connecting block, the connecting block is fixedly connected to the driving plate, the inner wall of the water tank is provided with a guide groove for the connecting block to slide, and the two ends of the tension spring are respectively fixedly connected to the connecting block and the inner wall of the guide groove.

[0015] By adopting the above technical solution, when the rainwater on the driving plate gradually increases, the driving plate can move downward under the gravity of the rainwater. At this time, the tension spring is stretched. Later, when the rainwater in the water tank is used up, the elastic force of the tension spring can gradually pull the driving plate to the upper position of the water tank for the next closing of the sealing cover.

[0016] Preferably, a rotating shaft is rotatably provided on the inner wall of the guide groove, a pull rope is wound on the rotating shaft, one end of the pull rope is fixedly connected to the connecting block, the other end of the pull rope is fixedly connected to the rotating shaft, a second gear is fixedly connected to the rotating shaft, a third gear is fixedly connected to the rotating rod, and the second gear is meshed with the third gear.

[0017] By adopting the above technical solution, when the rainwater in the water tank gradually increases, the driving plate moves downward to drive the connecting block to move, and the movement of the connecting block drives the pull rope to move. During this period, the pull rope wrapped around the rotating shaft can drive the rotating shaft to rotate, and the rotation of the rotating shaft can drive the second gear to rotate, and the rotation of the second gear drives the third gear to rotate, and the rotation of the third gear can drive the rotating rod to rotate, and then the rotation of the rotating rod can drive the sealing cover to rotate and close the water tank, thereby reducing the workload of the staff.

[0018] Preferably, a guide plate is fixedly connected to the opening of the water tank, and the guide plate is arranged at an angle.

[0019] By adopting the above technical solution, the guide plate can increase the collection area of ​​the water tank for collecting rainwater. When the sealing cover is rotated to the upper position of the water tank, the guide plate can continue to collect rainwater and drain the rainwater into the water tank.

[0020] Preferably, a reset block is fixedly connected to the driving block, and the inner wall of the first storage groove is also provided with a sliding groove for the reset block to slide, and a second spring is provided in the sliding groove, and both ends of the second spring are respectively fixedly connected to the reset block and the inner wall of the sliding groove.

[0021] By adopting the above technical solution, before the driving plate pushes the driving block to move, the second spring is in a normal state, and then when the driving plate pushes the driving block to move, the movement of the driving block drives the reset block to compress the second spring to move, and then when the driving plate moves to a position away from the driving block, the elastic force of the second spring can push the reset block and the driving block to move to the initial position, so as to facilitate the next driving of the driving plate to the driving block.

[0022] Preferably, a bellows is slidably connected to the inner wall of the guide groove, one end of the bellows is fixedly connected to the driving plate, and the other end of the bellows is fixedly connected to the inner wall of one end of the guide groove away from the driving plate.

[0023] By adopting the above technical solution, the provided corrugated cover can close the guide groove, thereby reducing the possibility of rainwater entering the guide groove.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. Before it rains, the sealing cover is in an open state. When it rains, the water tank can collect rainwater. Then, when the water tank is full of rainwater, the staff can close the sealing cover and connect the sealing cover to the opening of the water tank through the limit assembly to collect rainwater. Then, when the fog cannon is needed to spray and reduce dust, the staff can turn on the water pump, and then the water pump can extract rainwater in the water tank for spray and dust reduction, thereby reducing the use of tap water and reducing the waste of water resources;

[0026] 2. When the staff rotates the sealing cover to close it, the sealing cover can push the limiting block to overcome the elastic force of the first spring through the first inclined surface on the limiting block to move, and then when the sealing cover is rotated to a position corresponding to the sealing cover and the limiting block, the elastic force of the first spring can push the limiting block to be inserted into the limiting groove, thereby reducing the possibility of separation between the sealing cover and the opening of the collection box;

[0027] 3. Before the collection box collects rainwater, the driving plate is located at the upper position inside the water tank under the action of the stretching assembly. Later, when the rainwater collected in the water tank gradually increases, the driving plate can move downward under the action of the gravity of the rainwater and move to the lower position of the driving block. Subsequently, when the staff uses the rainwater in the water tank to reduce dust, the rainwater in the water tank will gradually decrease. At this time, the gravity of the rainwater exerted on the driving plate also gradually decreases, and the driving plate can move upward under the action of the stretching assembly. The driving plate can push the driving block to move through the second inclined surface on the driving block, and the driving block can drive the first rack to move. The movement of the first rack can drive the first gear to rotate. The rotation of the first gear can drive the second rack to move. The second rack drives the abutment block to move. The abutment block can push the push rod to move in the direction away from the sealing cover through the third inclined surface. The movement of the push rod drives the limit block to move. Subsequently, when the limit block moves to a position away from the sealing cover, the limit of the sealing cover can be released, thereby reducing the difficulty of opening the sealing cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of a dust suppression device for construction;

[0029] Figure 2 is a schematic diagram of the structure of the driving board highlighted in the embodiment of the present application;

[0030] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0031] Figure 4 It is a structural schematic diagram highlighting the second gear in the embodiment of the present application.

[0032] Description of reference numerals:

[0033] 1. Chassis; 2. Air duct; 3. Water tank; 4. Sealing cover; 5. Rotating rod; 6. Torsion spring; 7. Limiting assembly; 8. Water pump; 9. Limiting block; 10. First spring; 11. Sliding groove; 12. First inclined plane; 13. Limiting groove; 14. Driving plate; 15. Stretching assembly; 16. First storage groove; 17. Driving block; 18. First gear; 19. Abutting block; 20. Second inclined plane; 21. First rack; 22. Second rack; 23. Push rod; 24. Third inclined plane; 25. Tension spring; 26. Connecting block; 27. Guide groove; 28. Rotating shaft; 29. ​​Pull rope; 30. Second gear; 31. Third gear; 32. Guide plate; 33. Reset block; 34. Sliding groove; 35. Second spring; 36. Bellows. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] The present application discloses a dust suppression device for construction. Figure 1 As shown, a water tank 3 is welded and fixed to the top side wall of the base, and a water pump 8 is fixed to the top side wall of the chassis 1 by bolts. The water inlet and the water outlet of the water pump 8 are connected to connecting pipes, and the two connecting pipes are respectively connected to the water tank 3 and the water outlet of the wind tube 2; a sealing cover 4 is rotatably connected to the top opening of the water tank 3, and a rotating rod 5 is passed through and fixed at one end of the sealing cover 4, and both ends of the rotating rod 5 are respectively passed through and rotatably connected to the inner walls at the opposite ends of the opening of the water tank 3, and both ends of the rotating rod 5 are sleeved with torsion springs 6, and the two ends of the torsion spring 6 are respectively fixedly connected to the sealing cover 4 and the water tank 3.

[0036] like Figure 1 and Figure 2 As shown, a limiting assembly 7 for limiting the sealing cover 4 is provided on the side of the water tank 3 away from the rotating rod 5; the limiting assembly 7 includes a limiting block 9 and a first spring 10, and a sliding groove 11 is provided on the side of the opening of the water tank 3 away from the rotating rod 5, and the sliding groove 11 extends in the horizontal direction; the limiting block 9 is in the shape of a rectangular parallelepiped, and the limiting block 9 is slidably connected to the inner wall of the sliding groove 11 in the horizontal direction, and a first inclined surface 12 is provided on the top side wall of the limiting block 9 close to one end of the sealing cover 4, and a limiting groove 13 for the limiting block 9 to be inserted is provided on the sealing cover 4; the first spring 10 is horizontally arranged, and the two ends of the first spring 10 are respectively fixedly connected to the limiting block 9 and the inner wall of the sliding groove 11.

[0037] like Figure 1 and Figure 2 As shown, a driving plate 14 slides in the vertical direction in the water tank 3, and the driving plate 14 is in the shape of a rectangular parallelepiped. Guide grooves 27 are provided at the left and right ends of the water tank 3, and the guide grooves 27 extend in the vertical direction. A stretching assembly 15 is provided in the guide groove 27; the stretching assembly 15 includes a tension spring 25 and a connecting block 26, and the connecting block 26 is in the shape of a rectangular parallelepiped and is welded and fixed to the peripheral side wall of the driving plate 14, and the connecting block 26 is slidably connected to the inner wall of the guide groove 27 in the vertical direction, and the tension spring 25 is vertically arranged, and the upper and lower ends of the tension spring 25 are fixedly connected to the connecting block 26 and the top inner wall of the guide groove 27, respectively.

[0038] like Figure 2 and Figure 3As shown, a first storage slot 16 is provided at the bottom end of the right inner wall of the water tank 3, and a driving block 17, a first gear 18 and an abutting block 19 are provided in the first storage slot 16. The driving block 17 is in the shape of a rectangular parallelepiped, and the driving block 17 is penetrated and slidably connected to the inner wall of the first storage slot 16 in the horizontal direction. The upper and lower ends of the driving block 17 close to the driving plate 14 are provided with second inclined surfaces 20; the inner wall of the first storage slot 16 is rotatably connected with a rotating shaft, and the rotating shaft is horizontally arranged. The first gear 18 is sleeved and fixed to the side wall of the rotating shaft, and a first rack 21 is welded and fixed to the top side wall of the driving block 17. The first rack 21 is horizontally arranged and meshed with the first gear 18; the abutting block 19 is in the shape of a rectangular parallelepiped, and the abutting block 19 is slidably connected to the inner wall of the first storage slot 16 in the vertical direction. A second rack 22 is welded and fixed to the peripheral side wall of the abutting block 19, and the second rack 22 is vertically arranged and meshed with the first gear 18.

[0039] like Figure 2 and Figure 3 As shown, a push rod 23 slides horizontally in the first storage groove 16. The push rod 23 is in the shape of a rectangular parallelepiped. The push rod 23 passes through the bottom inner wall of the sliding groove 11 and is welded and fixed to the bottom side wall of the limit block 9. A third inclined surface 24 is provided on the side of the top of the abutment block 19 close to the push rod 23, and the abutment block 19 can abut and cooperate with the push rod 23.

[0040] like Figure 2 and Figure 4 As shown, a rotating shaft 28 is provided on the inner wall of the guide groove 27 located on the left side of the water tank 3. The rotating shaft 28 is horizontally arranged, and the two ends of the rotating shaft 28 are rotatably connected to the inner walls of the guide groove 27 at the opposite ends respectively. A pull rope 29 is wound around the rotating shaft 28, one end of the pull rope 29 is fixedly connected to the connecting block 26, and the other end of the pull rope 29 is fixedly connected to the rotating shaft 28. A second gear 30 is sleeved and fixed on the rotating shaft 28, and a third gear 31 is sleeved and fixed on the rotating rod 5, and the second gear 30 is meshed with the third gear 31.

[0041] like Figure 2 and Figure 4As shown, before it rains, the sealing cover 4 is in an open state, and the driving plate 14 is located at an upper position inside the water tank 3 under the action of the tension spring 25. Later, when it rains, the rainwater collected in the water tank 3 gradually increases, and the gravity of the rainwater received by the driving plate 14 also gradually increases. The driving plate 14 can move downward under the gravity of the rainwater; the driving plate 14 can drive the connecting block 26 located on the left side of the water tank 3 to move, and the movement of the connecting block 26 drives the pull rope 29 to move, and the tension spring 25 is stretched at this time; during this period, the pull rope 29 wound on the rotating shaft 28 can drive the rotating shaft 28 to rotate, and the rotation of the rotating shaft 28 can drive The second gear 30 is driven to rotate, and the rotation of the second gear 30 drives the third gear 31 to rotate. The rotation of the third gear 31 can drive the rotating rod 5 to rotate, and then the rotation of the rotating rod 5 can drive the sealing cover 4 to rotate and close the water tank 3. During the rotation of the sealing cover 4, the first inclined surface 12 on the limit block 9 can push the limit block 9 to overcome the elastic force of the first spring 10 to move. When the sealing cover 4 rotates to the position corresponding to the limit block 9 and the limit groove 13, the elastic force of the first spring 10 can push the limit block 9 to be inserted into the limit groove 13, so that the sealing cover 4 can be closed, reducing the work intensity of the staff.

[0042] like Figure 1 As shown, when it is necessary to use the fog cannon for spray dust reduction, the staff can turn on the water pump 8, and then the water pump 8 can draw rainwater in the water tank 3 for spray dust reduction, thereby reducing the use of tap water and reducing the waste of water resources.

[0043] like Figure 2 and Figure 3 As shown, when the rainwater in the water tank 3 gradually decreases, the gravity of the rainwater on the driving plate 14 gradually decreases. At this time, the elastic force of the tension spring 25 can gradually pull the driving plate 14 to move upward, and then the driving plate 14 can push the driving block 17 to move through the second inclined surface 20 on the driving block 17, and the driving block 17 can drive the first rack 21 to move, and the movement of the first rack 21 can drive the first gear 18 to rotate, and the rotation of the first gear 18 can drive the second rack 22 to move, and the second rack 22 drives the abutment block 19 to move, and the abutment block 19 can push the push rod 23 to move away from the sealing cover 4 through the third inclined surface 24, and the movement of the push rod 23 drives the limit block 9 to move, and then when the limit block 9 moves to a position away from the sealing cover 4, the limit of the sealing cover 4 can be released, reducing the difficulty of opening the sealing cover 4.

[0044] like Figure 1 As shown, a guide plate 32 is welded and fixed at the opening of the water tank 3, and the guide plate 32 is arranged at an angle; the set guide plate 32 can increase the collection area of ​​rainwater in the water tank 3, and when the sealing cover 4 is rotated to the upper position of the water tank 3, the set guide plate 32 can continue to collect rainwater and drain the rainwater into the water tank 3.

[0045] like Figure 2 and Figure 3 As shown, a reset block 33 is welded and fixed to the top side wall of the driving block 17, and the reset block 33 is in the shape of a rectangular parallelepiped. A sliding groove 34 for the sliding movement of the reset block 33 is also provided on the bottom inner wall of the first storage groove 16, and the sliding groove 34 extends in the horizontal direction; a second spring 35 is provided in the sliding groove 34, and the second spring 35 is horizontally arranged, and the two ends of the second spring 35 are respectively fixedly connected to the reset block 33 and the inner wall of the sliding groove 34.

[0046] like Figure 2 and Figure 3 As shown, before the driving plate 14 pushes the driving block 17 to move, the second spring 35 is in a normal state. Then, when the driving plate 14 pushes the driving block 17 to move, the movement of the driving block 17 drives the reset block 33 to compress the second spring 35 to move. Then, when the driving plate 14 moves to a position away from the driving block 17, the elastic force of the second spring 35 can push the reset block 33 and the driving block 17 to move to the initial position, so as to facilitate the next driving of the driving plate 14 to drive the driving block 17.

[0047] like Figure 2 As shown, a bellows 36 is provided in the guide groove 27. The bellows 36 is vertically arranged. The upper and lower ends of the bellows 36 are respectively fixedly connected to the inner top wall of the guide groove 27 and the driving plate 14. The peripheral side wall of the bellows 36 is slidably connected to the peripheral inner wall of the guide groove 27. The bellows 36 can close the guide groove 27, thereby reducing the possibility of rainwater entering the guide groove 27.

[0048] The implementation principle of the embodiment of the present application is as follows: before it rains, the sealing cover 4 is in an open state, and the driving plate 14 is located at an upper position inside the water tank 3 under the action of the tension spring 25. After that, when it rains, the rainwater collected in the water tank 3 gradually increases, and the gravity of the rainwater received by the driving plate 14 also gradually increases. The driving plate 14 can move downward under the gravity of the rainwater; the driving plate 14 can drive the connecting block 26 located on the left side of the water tank 3 to move, and the movement of the connecting block 26 drives the pull rope 29 to move, and the tension spring 25 is stretched at this time; during this period, the pull rope 29 wrapped around the rotating shaft 28 can drive the rotating shaft 28 to rotate, and the rotating shaft 28 The rotation can drive the second gear 30 to rotate, and the rotation of the second gear 30 drives the third gear 31 to rotate. The rotation of the third gear 31 can drive the rotating rod 5 to rotate. Subsequently, the rotation of the rotating rod 5 can drive the sealing cover 4 to rotate and close the water tank 3. During the rotation of the sealing cover 4, the first inclined surface 12 on the limit block 9 can push the limit block 9 to overcome the elastic force of the first spring 10 to move. When the sealing cover 4 rotates to the position corresponding to the limit block 9 and the limit groove 13, the elastic force of the first spring 10 can push the limit block 9 to be inserted into the limit groove 13, so that the sealing cover 4 can be closed, reducing the work intensity of the staff.

[0049] Later, when it is necessary to use the fog cannon for spray dust reduction, the staff can turn on the water pump 8, and then the water pump 8 can draw rainwater in the water tank 3 for spray dust reduction, thereby reducing the use of tap water and reducing the waste of water resources.

[0050] When the rainwater in the water tank 3 gradually decreases, the gravity of the rainwater on the driving plate 14 gradually decreases. At this time, the elastic force of the tension spring 25 can gradually pull the driving plate 14 to move upward, and then the driving plate 14 can push the driving block 17 to move through the second inclined surface 20 on the driving block 17, and the driving block 17 can drive the first rack 21 to move, and the movement of the first rack 21 can drive the first gear 18 to rotate, and the rotation of the first gear 18 can drive the second rack 22 to move, and the second rack 22 drives the abutment block 19 to move, and the abutment block 19 can push the push rod 23 to move away from the sealing cover 4 through the third inclined surface 24, and the movement of the push rod 23 drives the limit block 9 to move, and then when the limit block 9 moves to a position away from the sealing cover 4, the limit of the sealing cover 4 can be released, reducing the difficulty of opening the sealing cover 4.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A construction dust suppression device, comprising a housing (1) and a wind tube (2), characterized in that: The case (1) is provided with a water tank (3), a sealing cover (4) is provided at the opening of the water tank (3), one end of the sealing cover (4) is fixedly connected to a rotating rod (5), the two ends of the rotating rod (5) are respectively rotatably connected to the inner walls at the two opposite ends of the opening of the water tank (3), a torsion spring (6) is sleeved on the rotating rod (5), the two ends of the torsion spring (6) are respectively fixedly connected to the sealing cover (4) and the water tank (3), and a limiting component (7) for limiting the sealing cover (4) is provided on the water tank (3); a water pump (8) is also installed on the case (1), the water inlet of the water pump (8) is connected to the water tank (3), and the water outlet of the water pump (8) is connected to the water outlet of the wind tube (2); The limit assembly (7) comprises a limit block (9) and a first spring (10); a side wall of the water tank (3) is provided with a sliding groove (11); the limit block (9) slides in the sliding groove (11); a first inclined surface (12) is provided on the limit block (9); and a limit groove (13) for the limit block (9) to be inserted is provided on the sealing cover (4); two ends of the first spring (10) are respectively fixedly connected to the limit block (9) and the inner wall of the sliding groove (11); A driving plate (14) is slidably disposed in the water tank (3), and a stretching assembly (15) is disposed in the water tank (3) for pulling the driving plate (14); a first storage groove (16) is provided on the inner wall of the water tank (3), and a driving block (17), a first gear (18) and an abutting block (19) are disposed in the first storage groove (16); the driving block (17) penetrates and slides on the inner wall of the first storage groove (16), and a second inclined gear (18) is disposed on the driving block (17). The first gear (18) is rotatably arranged on the inner wall of the first storage groove (16), the driving block (17) is fixedly connected with a first rack (21), the first rack (21) is meshed with the first gear (18), the abutment block (19) is slidably connected with the inner wall of the first storage groove (16), the abutment block (19) is fixedly connected with a second rack (22), the second rack (22) is meshed with the first gear (18); A push rod (23) is slidably disposed in the first storage groove (16); the push rod (23) is penetrated through the inner wall of the sliding groove (11) and is fixedly connected to the limit block (9); a third inclined surface (24) is disposed at one end of the abutment block (19) close to the push rod (23); and the abutment block (19) is capable of abutting and cooperating with the push rod (23).

2. A construction dust suppression device according to claim 1, characterized in that: The stretching assembly (15) comprises a tension spring (25) and a connecting block (26); the connecting block (26) is fixedly connected to the driving plate (14); the inner wall of the water tank (3) is provided with a guide groove (27) for the connecting block (26) to slide; and the two ends of the tension spring (25) are respectively fixedly connected to the connecting block (26) and the inner wall of the guide groove (27).

3. A construction dust suppression device according to claim 2, characterized in that: A rotating shaft (28) is rotatably provided on the inner wall of the guide groove (27), a pull rope (29) is wound around the rotating shaft (28), one end of the pull rope (29) is fixedly connected to the connecting block (26), and the other end of the pull rope (29) is fixedly connected to the rotating shaft (28), a second gear (30) is fixedly connected to the rotating shaft (28), a third gear (31) is fixedly connected to the rotating rod (5), and the second gear (30) is meshed with the third gear (31).

4. A construction dust suppression device according to claim 1, characterized in that: A guide plate (32) is fixedly connected to the opening of the water tank (3), and the guide plate (32) is arranged at an angle.

5. A construction dust suppression device according to claim 1, characterized in that: A reset block (33) is fixedly connected to the driving block (17); the inner wall of the first storage groove (16) is also provided with a slide groove (34) for the reset block (33) to slide; a second spring (35) is arranged in the slide groove (34); two ends of the second spring (35) are respectively fixedly connected to the reset block (33) and the inner wall of the slide groove (34).

6. A construction dust suppression device according to claim 2, characterized in that: The inner wall of the guide groove (27) is slidably connected with a bellows (36), one end of the bellows (36) is fixedly connected to the drive plate (14), and the other end of the bellows (36) is fixedly connected to the inner wall of one end of the guide groove (27) away from the drive plate (14).

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