Dust falling device for civil construction

Abstract

The invention relates to the technical field of civil construction, and discloses a dust falling device for civil construction, according to the dust falling device for civil construction, through the arrangement of a swing part, when a water sprinkling disc rotates, the water sprinkling disc abuts against a sliding ring through a rotating rod to rotate together, the sliding ring drives a triangular block to rotate together, and after the triangular block rotates to the position of an L-shaped abutting rod, the water sprinkling disc rotates; an L-shaped abutting rod pushes a disc and a sliding ring to move upwards by abutting against the inclined face of a triangular block, the sliding ring drives a sliding rod to slide upwards in a spiral sliding groove in the surface of a rotating rod, so that the rotating rod rotates, the rotating rod drives a water spraying pipe to rotate by a certain angle together, a water spraying head connected to the water spraying pipe is deflected, and the spraying position of the water spraying head is adjusted; the water spraying disc is controlled to rotate in the opposite direction, the spraying range of the water spraying head is not 360 degrees all the time, the positions for adding a water source into the water storage tank and closing a water pump by workers are reserved, and water is prevented from being sprayed to the workers while the spraying dust falling effect is not affected.

Description

Technical Field

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

[0002] During the civil construction process, a large amount of dust will be generated, polluting the atmosphere. The commonly used measure is to sprinkle water to reduce dust, which has a good effect. There are many existing water sprinkling dust reduction devices, such as a dust reduction device for civil construction published with announcement number CN220758497U. The dust reduction device for civil construction installs multiple unit sprinkler piles at the construction site, and connects each unit sprinkler pile in series through a connecting water pipe, uses a water pump to pressurize water, and sprays water into the air or the ground through a nozzle to accelerate the falling of dust and moisten the ground, thereby achieving the effect of dust reduction. The device can be arranged on a complex ground or structure as needed, and is more practical and convenient to use, and has a wide coverage.

[0003] However, the above device has the following disadvantages during actual use: the reverse thrust generated by the sprinkler head during spraying causes the supporting pipe to rotate, thereby driving the sprinkler head to rotate, but the sprinkler head rotates in a 360° circle. When there is still water in the water tank and the staff needs to shut down the entire device to stop sprinkling, water will inevitably spray on the staff. Moreover, the sprinkler head only relies on rotation to spray and reduce dust, and the range of dust reduction is limited. The dust reduction effect has certain limitations. For this reason, we propose a dust reduction device for civil construction. Summary of the invention

[0004] The object of the present invention is to provide a dust suppression device for civil construction to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dust suppression device for civil construction, comprising a water tank and a connecting water pipe, a mounting frame is fixed to the bottom of the water tank, a spraying mechanism is arranged inside and on the top of the water tank, the connecting water pipe is connected to the water tank through a water filling pipe, the spraying mechanism is composed of a water pump, a pipeline, a sprinkler disc, a sealed bearing and a sprinkler head, the sprinkler disc is provided with an adjusting component for controlling the sprinkler head, and the adjusting component comprises a swinging part for controlling the sprinkler disc and a driven part for controlling the sprinkler head.

[0006] Preferably, the swinging part comprises a disc, the disc is penetrated by a pipeline and is slidably connected with the pipeline, a return spring is fixed at the bottom of the disc, one end of the return spring away from the disc is fixed to the surface of the pipeline, a slip ring is rotatably installed on the surface of the disc, a through hole is provided on the slip ring, a sliding rod is fixed on the inner side of the through hole, the bottom of the watering disc is penetrated by a rotating rod and is rotatably connected with the rotating rod, a spiral groove is provided on the surface of the rotating rod, one end of the sliding rod away from the through hole is inserted into the inner side of the spiral groove, the rotating rod is fixed to the bottom of the watering pipe, a triangular block is fixed at the bottom of the slip ring, an L-shaped interference rod is fixed on the surface of the pipeline, and when the watering disc rotates, The sprinkler disc rotates together with the sliding ring through the rotating rod, and the sliding ring drives the triangular block to rotate together. When the triangular block rotates to the position of the L-shaped contact rod, the L-shaped contact rod pushes the disc and the sliding ring upward by contacting the inclined surface of the triangular block. The sliding ring drives the sliding rod to slide upward in the spiral groove on the surface of the rotating rod, so that the rotating rod rotates. The rotating rod drives the water spray pipe to rotate a certain angle, thereby deflecting the sprinkler head connected to the water spray pipe to adjust the spraying position of the sprinkler head, thereby controlling the sprinkler disc to rotate in the opposite direction, so that the spraying range of the sprinkler head will never be 360°, thereby reserving a position for the staff to add water to the water tank and turn off the water pump to avoid water spraying on the staff.

[0007] Preferably, a cavity is provided inside the watering plate, the pipe extends into the cavity, water can enter the cavity through the pipe, a telescopic rod is fixed to the top of the slip ring, one end of the telescopic rod away from the slip ring is fixed to the bottom of the watering plate, and when the watering plate 23 rotates, the slip ring can be driven to rotate together through the telescopic rod.

[0008] Preferably, a hose is fixed to one side of the water spray pipe close to the center of the sprinkler plate, one end of the hose is fixed to the water spray pipe, and the other end of the hose extends into the cavity and is fixed to the sprinkler plate. The water flow entering the cavity can enter the water spray pipe through the hose. Through the set hose, when the water spray pipe swings, the water flow can still enter the water spray pipe normally without affecting the swing of the water spray pipe.

[0009] Preferably, the driven part includes a rubber tube, one end of which is connected to and fixed to a water spray pipe, and the other end of which is fixed with a threaded connector, a top plate is fixed to the top of the pipe, a large gear is rotatably installed on the bottom of the top plate, a small gear ring is fixed to the top of the disc, the small gear ring meshes with the large gear, the top plate is penetrated by a convex ring and slidably connected with the convex ring, a connecting spring is fixed to the top of the top plate, and one end of the connecting spring away from the top plate is fixed to the convex ring, a convex block is fixed to the top of the rubber tube, and an interference block is fixed to the bottom of the large gear, and when the disc rotates, the disc drives the small gear ring to rotate and engages with the small gear ring. The large gear meshing with the gear ring rotates together with it, and the rotation speed of the large gear is slower than that of the small gear ring. The large gear drives the resistance block to rotate together. When the resistance block rotates to the position of the convex ring, the convex ring is resisted and moves downward. When the disc drives the water spray pipe to rotate together, the water spray pipe drives the rubber tube to rotate together. When the convex ring moves downward, it can resist the bump on the top of the rubber tube. When the bump is resisted, the rubber tube moves downward. When the bump is not resisted, the rubber tube resets under the action of its own elasticity. Due to the different rotation speeds of the large gear and the disc, the rubber tube can be made to swing up and down irregularly, thereby increasing the spraying area and further improving the effect of water spraying and dust reduction.

[0010] Preferably, the water pump is fixed to the top of the water tank by bolts, the pipe extends into the water tank, the water pump is arranged on the pipe, the pipe runs through the sprinkler plate, and the pipe is connected to the sprinkler plate through a sealing bearing. The sealing bearing can effectively ensure the sealing between the pipe and the sprinkler plate to avoid leakage.

[0011] Preferably, a water outlet is provided on the pipe, and water pumped by the water pump enters the pipe and enters the cavity inside the water sprinkling plate through the water outlet provided on the pipe.

[0012] Preferably, an opening component is provided inside the water spray pipe, and the opening component includes a fixing plate, the fixing plate is fixed on the inner wall of the water spray pipe, a tension spring is fixed to one side of the fixing plate, and a sealing plate is abutted on the other side of the fixing plate, a connecting plate is fixed to the end of the tension spring away from the fixing plate, a connecting rod is fixed between the connecting plate and the sealing plate, and a rubber pad is provided on the side of the sealing plate close to the fixing plate, under the action of the tension spring, the rubber pad on the sealing plate can firmly abut against the fixing plate, thereby blocking the water spray pipe, and when the connecting plate is abutted, the connecting plate drives the sealing plate to move through the connecting rod, so that the sealing plate no longer abuts against the fixing plate, thereby opening the water spray pipe.

[0013] Preferably, the sprinkler head is threadedly connected to the threaded connector. When the sprinkler head is installed on the threaded connector, as the sprinkler head is continuously screwed in, the sprinkler head can extend into the water spray pipe, thereby resisting the connecting plate to open the water spray pipe.

[0014] Compared with the prior art, the present invention provides a dust suppression device for civil construction, which has the following beneficial effects: 1. The dust suppression device for civil construction has a swinging part. When the watering disc rotates, the watering disc rotates together with the sliding ring through the rotating rod, and the sliding ring drives the triangular block to rotate together. When the triangular block rotates to the position of the L-shaped contact rod, the L-shaped contact rod pushes the disc and the sliding ring to move upward by contacting the inclined surface of the triangular block. The sliding ring drives the sliding rod to slide upward in the spiral groove on the surface of the rotating rod, so that the rotating rod rotates. The rotating rod drives the water spray pipe to rotate a certain angle together, thereby deflecting the sprinkler head connected to the water spray pipe to adjust the spraying position of the sprinkler head, thereby controlling the watering disc to rotate in the opposite direction, so that the spraying range of the sprinkler head will never be 360°, thereby reserving a position for the staff to add water to the water tank and turn off the water pump, and preventing water from spraying on the staff without affecting the dust suppression effect of spraying.

[0015] 2. The dust suppression device for civil construction has a swinging part and a driven part. When the abutment block rotates to the position of the convex ring, the convex ring is abutted and moves downward. When the disc drives the water spray pipe to rotate together, the water spray pipe drives the rubber pipe to rotate together. When the convex ring moves downward, it can abut on the convex block on the top of the rubber pipe. When the convex block is abutted, the rubber pipe moves downward. When the convex block is not abutted, the rubber pipe resets under the action of its own elasticity. Since the rotation speeds of the large gear and the disc are different, the rubber pipe can be made to swing up and down irregularly, thereby increasing the spraying area and further improving the effect of water spraying and dust suppression.

[0016] 3. The dust suppression device for civil construction uses an opening component to install the sprinkler head on the threaded connector of the corresponding rubber tube. As the sprinkler head is continuously screwed in, the sprinkler head can extend into the water spray pipe, thereby contacting the connecting plate to open the water spray pipe. When not in use, the rubber pad on the sealing plate can firmly contact the fixed plate to block the water spray pipe and prevent water from flowing out and causing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the front view structure of the water storage tank of the present invention when it is removed; Figure 3 It is a schematic diagram of the spraying mechanism structure of the present invention; Figure 4 It is a schematic diagram of the structure of the swing part of the present invention; Figure 5 It is a schematic diagram of the connection structure of the through hole on the slip ring, the sliding rod and the rotating rod of the present invention; Figure 6 It is a schematic diagram of the structure of the driven part of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the watering tray of the present invention; Figure 8 It is a schematic diagram of the cross-section top view of the water spray pipe of the present invention.

[0018] In the figure: 1, water storage tank; 2, spraying mechanism; 21, water pump; 22, pipeline; 23, water spraying plate; 24, sealed bearing; 25, water spraying head; 3, swinging part; 31, disc; 32, return spring; 33, through hole; 34, slide rod; 35, rotating rod; 36, spiral slide groove; 37, water spraying pipe; 38, triangular block; 39, L-shaped resistance rod; 310, slip ring; 4, driven part; 41, rubber tube; 4 2. Threaded connector; 44. Top plate; 45. Large gear; 46. Small gear ring; 47. Convex ring; 48. Connecting spring; 49. Bump; 410. Resistance block; 5. Opening assembly; 51. Fixing plate; 52. Tension spring; 53. Sealing plate; 54. Connecting plate; 55. Connecting rod; 6. Water filling pipe; 7. Connecting water pipe; 8. Cavity; 9. Hose; 10. Water outlet; 11. Mounting frame; 12. Telescopic rod. DETAILED DESCRIPTION

[0019] like Figure 1-Figure 8 As shown, the present invention provides a technical solution: a dust suppression device for civil construction, comprising a water tank 1 and a connecting water pipe 7, a mounting frame 11 is fixed to the bottom of the water tank 1, a spraying mechanism 2 is arranged inside and on the top of the water tank 1, the connecting water pipe 7 is connected to the water tank 1 through a water supply pipe 6, the spraying mechanism 2 is composed of a water pump 21, a pipeline 22, a water sprinkling plate 23, a sealing bearing 24 and a sprinkler head 25, the water sprinkling plate 23 is provided with an adjusting component for controlling the sprinkler head 25, and the adjusting component comprises a swinging part 3 for controlling the water sprinkling plate 23 and a driven part 4 for controlling the sprinkler head 25.

[0020] The swinging part 3 includes a disc 31, which is penetrated by the pipe 22 and slidably connected with the pipe 22. A return spring 32 is fixed at the bottom of the disc 31, and the end of the return spring 32 away from the disc 31 is fixed to the surface of the pipe 22. A slip ring 310 is rotatably installed on the surface of the disc 31. A through hole 33 is provided on the slip ring 310, and a slide rod 34 is fixed to the inner side of the through hole 33. The bottom of the watering plate 23 is penetrated by a rotating rod 35 and rotatably connected with the rotating rod 35. A spiral groove 36 is provided on the surface of the rotating rod 35, and the end of the slide rod 34 away from the through hole 33 is inserted into the inner side of the spiral groove 36. The rotating rod 35 is fixed to the bottom of the water spray pipe 37. A triangular block 38 is fixed at the bottom of the slip ring 310, and an L-shaped abutment rod 39 is fixed to the surface of the pipe 22. When the watering plate 23 rotates, the watering plate 23 passes through the rotating rod 3 The sliding ring 310 rotates together with the sliding ring 310, and the sliding ring 310 drives the triangular block 38 to rotate together. When the triangular block 38 rotates to the position of the L-shaped contact rod 39, the L-shaped contact rod 39 pushes the disc 31 and the sliding ring 310 to move upward by contacting the inclined surface of the triangular block 38. The sliding ring 310 drives the sliding rod 34 to slide upward in the spiral groove 36 on the surface of the rotating rod 35, so that the rotating rod 35 rotates, and the rotating rod 35 drives the water spraying pipe 37 to rotate a certain angle together, thereby deflecting the sprinkler head 25 connected to the water spraying pipe 37 to adjust the spraying position of the sprinkler head 25, thereby controlling the sprinkler disc 23 to rotate in the opposite direction, so that the spraying range of the sprinkler head 25 will never be 360°, thereby reserving a position for the staff to add water to the water storage tank 1 and turn off the water pump 21 to avoid water spraying to the staff.

[0021] A cavity 8 is provided inside the watering plate 23, and a pipe 22 extends into the cavity 8. Water can flow into the cavity 8 through the pipe 22. A telescopic rod 12 is fixed to the top of the slip ring 310. One end of the telescopic rod 12 away from the slip ring 310 is fixed to the bottom of the watering plate 23. When the watering plate 23 rotates, the slip ring 310 can be driven to rotate together through the telescopic rod 12.

[0022] A hose 9 is fixed to the side of the water spray pipe 37 close to the center of the water sprinkling plate 23. One end of the hose 9 is fixed to the water spray pipe 37, and the other end of the hose 9 extends into the cavity 8 and is fixed to the water sprinkling plate 23. The water flow entering the cavity 8 can enter the water spray pipe 37 through the hose 9. Through the arrangement of the hose 9, when the water spray pipe 37 swings, the water flow can still enter the water spray pipe 37 normally without affecting the swing of the water spray pipe 37.

[0023] The driven part 4 includes a rubber tube 41, one end of which is connected to and fixed to the water spray pipe 37, and a threaded connector 42 is fixed to the other end of the rubber tube 41. A top plate 44 is fixed to the top of the pipe 22, and a large gear 45 is rotatably installed at the bottom of the top plate 44. A small gear ring 46 is fixed to the top of the disc 31, and the small gear ring 46 is meshed with the large gear 45. The top plate 44 is penetrated by a convex ring 47 and is slidably connected to the convex ring 47. A connecting spring 48 is fixed to the top of the top plate 44, and one end of the connecting spring 48 away from the top plate 44 is fixed to the convex ring 47. A convex block 49 is fixed to the top of the rubber tube 41, and a resisting block 410 is fixed to the bottom of the large gear 45. When the disc 31 rotates, the disc 31 drives the small gear ring 46 to rotate, and the large gear ring meshed with the small gear ring 46 The wheel 45 rotates therewith, and the rotation speed of the large gear 45 is slower than that of the small gear ring 46. The large gear 45 drives the abutment block 410 to rotate together. When the abutment block 410 rotates to the position of the convex ring 47, the convex ring 47 is abutted and moves downward. When the disc 31 drives the water spray pipe 37 to rotate together, the water spray pipe 37 drives the rubber tube 41 to rotate together. When the convex ring 47 moves downward, it can abut on the protrusion 49 on the top of the rubber tube 41. When the protrusion 49 is abutted, the rubber tube 41 moves downward. When the protrusion 49 is not abutted, the rubber tube 41 is reset under the action of its own elasticity. Since the rotation speeds of the large gear 45 and the disc 31 are different, the rubber tube 41 can be made to swing up and down irregularly, thereby increasing the spraying area and further improving the effect of water spraying and dust reduction.

[0024] The water pump 21 is fixed to the top of the water tank 1 by bolts, and the pipe 22 extends into the water tank 1. The water pump 21 is arranged on the pipe 22, and the pipe 22 runs through the sprinkler plate 23. The pipe 22 is connected to the sprinkler plate 23 through a sealing bearing 24. The sealing bearing 24 can effectively ensure the sealing between the pipe 22 and the sprinkler plate 23 to avoid leakage.

[0025] The pipe 22 is provided with a water outlet 10 , and water pumped by the water pump 21 enters the pipe 22 and enters the cavity 8 inside the water sprinkling plate 23 through the water outlet 10 provided on the pipe 22 .

[0026] An opening component 5 is provided inside the water spray pipe 37, and the opening component 5 includes a fixing plate 51, which is fixed on the inner wall of the water spray pipe 37, a tension spring 52 is fixed on one side of the fixing plate 51, and a sealing plate 53 is abutted on the other side of the fixing plate 51, a connecting plate 54 is fixed on the end of the tension spring 52 away from the fixing plate 51, a connecting rod 55 is fixed between the connecting plate 54 and the sealing plate 53, and a rubber pad is provided on the side of the sealing plate 53 close to the fixing plate 51. Under the action of the tension spring 52, the rubber pad on the sealing plate 53 can firmly abut against the fixing plate 51, thereby blocking the water spray pipe 37. When the connecting plate 54 is abutted, the connecting plate 54 drives the sealing plate 53 to move through the connecting rod 55, so that the sealing plate 53 no longer abuts against the fixing plate 51, thereby opening the water spray pipe 37.

[0027] The sprinkler head 25 is threadedly connected to the threaded connector 42. When the sprinkler head 25 is installed on the threaded connector 42, as the sprinkler head 25 is continuously screwed in, the sprinkler head 25 can extend into the water spray pipe 37, thereby resisting the connecting plate 54 to open the water spray pipe 37.

[0028] Based on the above embodiment, the entire device is installed at the required installation position through the mounting frame 11 using bolts, the connecting water pipe 7 is used to connect to the water source to replenish the water source in the water tank 1, and the sprinkler head 25 is installed on the threaded connector 42 corresponding to the rubber tube 41. As the sprinkler head 25 is continuously screwed in, the sprinkler head 25 can extend into the water spray pipe 37, thereby resisting the connecting plate 54 to open the water spray pipe 37.

[0029] During the civil construction process, the water pump 21 is turned on, the water pump 21 draws water through the pipe 22 and enters the cavity 8 of the sprinkler plate 23 through the water outlet 10 on the pipe 22, and the water source then enters the sprinkler head 25 through the hose 9 and the spray pipe 37 for spraying.

[0030] Since the sprinkler head 25 has a certain angle in the initial state, during the spraying process of the sprinkler head 25, the reverse thrust causes the sprinkler disc 23 to rotate, and the sprinkler disc 23 rotates together through the rotating rod 35 against the slip ring 310, and the slip ring 310 drives the triangular block 38 to rotate together. When the triangular block 38 rotates to the position of the L-shaped resistance rod 39, the L-shaped resistance rod 39 pushes the disc 31 and the slip ring 310 to move upward by resisting the inclined surface of the triangular block 38, and the slip ring 310 drives the slide rod 34 on the surface of the rotating rod 35. The spiral slide 36 slides upward, causing the rotating rod 35 to rotate, and the rotating rod 35 drives the water spray pipe 37 to rotate together by a certain angle, thereby deflecting the sprinkler head 25 connected to the water spray pipe 37, and adjusting the spraying position of the sprinkler head 25, thereby controlling the sprinkler plate 23 to rotate in the opposite direction, so that the spraying range of the sprinkler head 25 will never be 360°, thereby reserving a position for the staff to add water to the water tank 1 and turn off the water pump 21 to avoid water spraying to the staff.

[0031] During this process, the disc 31 drives the small gear ring 46 to rotate, and the large gear 45 meshing with the small gear ring 46 rotates therewith. The rotation speed of the large gear 45 is slower than that of the small gear ring 46. The large gear 45 drives the abutment block 410 to rotate together. When the abutment block 410 rotates to the position of the convex ring 47, the convex ring 47 is abutted and moves downward. When the disc 31 drives the water spray pipe 37 to rotate together, the water spray pipe 37 drives the rubber tube 41 to rotate together. When the convex ring 47 moves downward, it can abut on the protrusion 49 at the top of the rubber tube 41. When the protrusion 49 is abutted, the rubber tube 41 moves downward. When the protrusion 49 is not abutted, the rubber tube 41 is reset under the action of its own elasticity. Since the rotation speeds of the large gear 45 and the disc 31 are different, the rubber tube 41 can be made to swing up and down irregularly, thereby increasing the spraying area and further improving the effect of water spraying and dust reduction.

[0032] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A dust suppression device for civil construction, comprising a water storage tank (1) and a connecting water pipe (7), wherein a mounting frame (11) is fixed to the bottom of the water storage tank (1), characterized in that: A spraying mechanism (2) is provided inside and on the top of the water storage tank (1); the connecting water pipe (7) is connected to the water storage tank (1) via a water supply pipe (6); the spraying mechanism (2) is composed of a water pump (21), a pipe (22), a water sprinkling plate (23), a sealing bearing (24) and a water sprinkling head (25); the water sprinkling plate (23) is provided with an adjusting component for controlling the water sprinkling head (25); the adjusting component comprises a swinging part (3) for controlling the water sprinkling plate (23) and a driven part (4) for controlling the water sprinkling head (25).

2. A dust suppression device for civil construction according to claim 1, characterized in that: The swinging portion (3) comprises a disk (31), the disk (31) being penetrated by the pipe (22) and being slidably connected to the pipe (22), a return spring (32) being fixed to the bottom of the disk (31), one end of the return spring (32) being away from the disk (31) being fixed to the surface of the pipe (22), a slip ring (310) being rotatably mounted on the surface of the disk (31), a through hole (33) being provided on the slip ring (310), a slide rod (310) being fixed to the inner side of the through hole (33) 34), the bottom of the watering plate (23) is penetrated by a rotating rod (35) and is rotatably connected to the rotating rod (35), a spiral groove (36) is provided on the surface of the rotating rod (35), one end of the sliding rod (34) away from the through hole (33) is inserted into the inner side of the spiral groove (36), the rotating rod (35) is fixed to the bottom of the water spray pipe (37), a triangular block (38) is fixed to the bottom of the slip ring (310), and an L-shaped abutment rod (39) is fixed to the surface of the pipe (22).

3. A dust suppression device for civil construction according to claim 2, characterized in that: The watering plate (23) has a cavity (8) formed inside, the pipe (22) extends into the cavity (8), a telescopic rod (12) is fixed to the top of the slip ring (310), and one end of the telescopic rod (12) away from the slip ring (310) is fixed to the bottom of the watering plate (23).

4. A dust suppression device for civil construction according to claim 3, characterized in that: A hose (9) is fixed to one side of the water spray pipe (37) close to the center of the water spray plate (23), one end of the hose (9) is fixed to the water spray pipe (37), and the other end of the hose (9) extends into the cavity (8) and is fixed to the water spray plate (23).

5. A dust suppression device for civil construction according to claim 2, characterized in that: The driven part (4) comprises a rubber tube (41), one end of which is connected to and fixed to the water spray pipe (37), and the other end of which is fixed to a threaded connector (42). A top plate (44) is fixed to the top of the pipe (22), and a large gear (45) is rotatably mounted on the bottom of the top plate (44). A small gear ring (46) is fixed to the top of the disc (31), and the small gear ring (46) meshes with the large gear (45). The top plate (44) is penetrated by a convex ring (47) and is slidably connected to the convex ring (47). A connecting spring (48) is fixed to the top of the top plate (44), and one end of the connecting spring (48) away from the top plate (44) is fixed to the convex ring (47). A convex block (49) is fixed to the top of the rubber tube (41), and a resisting block (410) is fixed to the bottom of the large gear (45).

6. A dust suppression device for civil construction according to claim 1, characterized in that: The water pump (21) is fixed to the top of the water tank (1) by means of bolts. The pipe (22) extends into the water tank (1). The water pump (21) is arranged on the pipe (22). The pipe (22) passes through the watering plate (23). The pipe (22) is connected to the watering plate (23) via a sealing bearing (24).

7. A dust suppression device for civil construction according to claim 1, characterized in that: The pipe (22) is provided with a water outlet (10).

8. A dust suppression device for civil construction according to claim 2, characterized in that: An opening assembly (5) is arranged inside the water spray pipe (37), and the opening assembly (5) comprises a fixing plate (51), the fixing plate (51) being fixed on the inner wall of the water spray pipe (37), a tension spring (52) being fixed on one side of the fixing plate (51), a sealing plate (53) being abutted against the other side of the fixing plate (51), a connecting plate (54) being fixed on one end of the tension spring (52) away from the fixing plate (51), and a connecting rod (55) being fixed between the connecting plate (54) and the sealing plate (53).

9. A dust suppression device for civil construction according to claim 5, characterized in that: The sprinkler head (25) is threadedly connected to the threaded connection head (42).

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