Field spraying and dust falling device for building construction

Abstract

The invention discloses a site spraying and dust falling device for building construction, and relates to the technical field of construction dust falling. The site spraying and dust falling device for building construction comprises a moving seat, a telescopic supporting rod, a lifting mechanism, a top disc, an extending assembly, a winding module and the like, the moving seat provides a flexible moving foundation for the whole device, and the operation site can be adjusted according to needs; the telescopic supporting rod is vertically arranged in the center of the top of the movable base and driven by the lifting mechanism to stretch out and draw back so as to adjust the height of the top disc, and different dust raising height requirements are met. A plurality of extension assemblies are arranged on the periphery of the top tray, each extension assembly comprises an extension pipe with an atomization nozzle and an end hook piece, and the extension assemblies can be hung to an external supporting structure to form umbrella-shaped covering; and the winding module realizes automatic winding and unwinding of the extension pipe through a torsion spring device. The device effectively overcomes the defects that an existing wall water mist system is fixed in position, limited in spraying gun coverage range and insufficient in efficiency, is flexible to move, convenient to arrange, wide in coverage area and high in dust falling efficiency, and meets the complex and variable operation requirements of a building construction site.

Description

Technical Field

[0001] This invention relates to the field of construction dust suppression technology, and in particular to a spray dust suppression device for construction sites. Background Technology

[0002] During construction, earthwork, material loading and unloading, and machinery operations continuously generate large amounts of dust. This dust not only damages the surrounding air quality but also poses potential health hazards to construction workers and may violate environmental regulations, leading to construction interruptions. Therefore, spray dust suppression devices have become an indispensable environmental protection equipment for construction sites. By combining water mist with the adsorption of dust particles, they achieve rapid dust suppression and are an important technical means to ensure construction compliance and environmental safety.

[0003] Currently, several dust suppression technologies for construction sites have been authorized in China. Among them, for the solution of water mist system for walls, there is the Chinese utility model patent with publication number CN222777817U, which discloses a construction site wall spraying device. Through the combination structure of U-shaped water pipe and spraying components, the spray head is fixedly installed on the construction wall, and water is delivered by water pump to achieve spray dust suppression. For the solution of spray cannon, some use a mobile vehicle to carry the spray cannon, and use a lifting mechanism and connecting frame to adjust the spray angle to achieve directional spray dust suppression operation.

[0004] Both of the above-mentioned existing technical solutions have obvious shortcomings: In the wall-mounted water mist system solution, the spray components and water supply pipelines are fixedly installed on the wall, and the installation position cannot be flexibly adjusted. It can only cover a limited area around the wall, and it is difficult to form an effective water mist coverage for high dust areas inside the construction site, resulting in obvious blind spots in the dust suppression range; Although the spray cannon solution has a certain angle adjustment capability, its coverage range is still unable to meet the dust suppression needs of large construction sites due to its own spray structure and operation method. Moreover, when dust is generated simultaneously in multiple areas, it is necessary to frequently adjust the position or operate one by one, resulting in low dust suppression efficiency and inability to suppress dust spread in time, making it difficult to meet the high-efficiency dust suppression needs of construction sites. Summary of the Invention

[0005] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a dust suppression spray device for construction sites. This device can solve the problems of existing wall water mist systems having fixed positions, inflexible adjustment of working positions and heights, and obvious blind spots in the dust suppression range, as well as existing spray cannons having limited coverage, insufficient dust suppression efficiency, and difficulty in adapting to the needs of simultaneous dust suppression in the entire area and multiple areas of large construction sites.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dust suppression spraying device for construction sites, designed to solve the problems of fixed location and blind spots in existing wall water mist systems, as well as limited coverage and insufficient dust suppression efficiency of spray cannons. The device includes a movable base, a telescopic support rod, a lifting mechanism, and a top plate. The telescopic support rod is vertically installed at the center of the top of the movable base. Utilizing the movable base's mobility, the entire device does not need to be fixed in a specific location; the operating location can be flexibly adjusted according to the changing locations of different dust-prone areas within the construction site, adapting to complex and variable construction environments. The lifting mechanism is located on the side of the telescopic support rod and is parallel to it, driving the telescopic support rod to extend and retract. It can flexibly adjust the height of the top plate, thus adapting to the dust suppression height requirements of different construction scenarios and overcoming the limitations of fixed height in existing devices. The top plate is rotatably installed on the top end face of the telescopic support rod and is coaxial with it. Rotation can adjust the arrangement angle of the extended components, further improving the flexibility of coverage.

[0007] The device also includes an extension component, a rewind module, and a cleaning module. The extension component is located on the outside of the top plate and can be connected to an external location, enabling long-distance operation coverage. The rewind module is located on the inside of the top plate and is used to tension and rewind the extension component, facilitating device movement and storage, and preventing messy pipelines from affecting construction access. The cleaning module is located between the extension component and the rewind module and can clean the extension component, ensuring the stability and continuity of the spraying operation.

[0008] Preferably, the movable base is also equipped with a booster pump and a water supply hose. The water supply hose is wrapped around the periphery of the telescopic support rod and connected to the winding module. The booster pump is installed on the movable base and its output end is connected to the end of the water supply hose away from the top plate through a pipe fitting. The booster pump can provide stable water pressure for spraying operations, ensuring that the water mist sprayed from the atomizing nozzle is fine and uniform, and improving the dust adsorption effect. The combination of the water supply hose and the telescopic support rod does not affect the lifting and lowering action of the telescopic support rod, and ensures smooth water flow, avoiding damage to the pipeline.

[0009] Preferably, the mobile base is also equipped with a booster pump and a filter water tank. The filter water tank is located on the mobile base and connected to the input end of the booster pump via a pipe. The side of the filter water tank away from its connection with the booster pump has a connection port for connecting to an external water pump pipe. The filter water tank can filter the water source to prevent impurities from clogging the atomizing nozzle and ensure long-term stable operation of the device. The connection port facilitates quick and easy connection to an external water source, improving operational convenience. A ring-shaped light is installed at the bottom of the top plate near the outer edge to provide sufficient lighting during nighttime construction, expanding the device's application scenarios. A counterweight is installed inside the mobile base to enhance the stability of the device during lifting and moving operations, preventing tipping due to excessive center of gravity or movement, and improving safety.

[0010] Preferably, the extension assembly includes an extension tube, an atomizing nozzle, and a hook. Multiple sets of extension tubes are arranged around the top plate, and the surface of the extension tubes is arrayed with atomizing nozzles that communicate with their interiors. The multiple sets of extension tubes, together with the arrayed atomizing nozzles, can form a large-area, high-density water mist coverage, effectively improving the dust suppression effect. The ends of the extension tubes away from the top plate are connected to hooks that can be hooked to external locations. The extension tubes can be hung on a distant support structure through the hooks, allowing the multiple sets of extension tubes to be flexibly arranged into an umbrella shape or other shapes suitable for the site. This completely breaks the coverage limitations of existing devices, achieving comprehensive coverage of the core area and large area inside the construction site, and eliminating dust suppression blind spots.

[0011] Preferably, the winding module includes a winding box, a winding tube, a winding rod, and a torsion spring. A hollow torsion spring is integrally formed at the center of the inner side of the top plate. Multiple arrays of winding boxes are installed on the inner side of the top plate, located around the torsion spring. A winding rod is rotatably connected inside the winding box, and a winding tube is wound and connected to the winding rod. The winding tube is connected to the extension tube. A torsion spring is installed at the connection shaft between the winding rod and the winding box. The torsion spring provides automatic reset power for the winding of the winding tube, eliminating the need for manual winding. This saves manpower and allows for quick storage and unfolding of the extension tube, improving the ease of operation of the device. The winding box protects and organizes the winding tube, preventing tangling and wear, and extending its service life.

[0012] Preferably, the winding module further includes a connecting pipe and a multi-port connecting pipe. The outer wall of the torsion spring is connected to the connecting pipe that communicates with its interior. The end of the connecting pipe away from the torsion spring extends to the bottom of the top plate and is connected to the water supply hose. The winding pipe is connected to the torsion spring. The winding pipe has a multi-port connecting pipe integrally formed in the middle section. This water connection structure can ensure that the water source is stably delivered to each set of extension pipes without affecting the winding and unwinding action of the winding pipe. The multi-port connecting pipe realizes the connection between a single winding pipe and multiple sets of extension pipes, simplifies the pipeline structure, improves the uniformity of water mist coverage, and further optimizes the dust suppression effect.

[0013] Preferably, the lifting mechanism includes a hydraulic rod, a lower mounting base, and an upper connecting base. A hydraulic rod with its free end vertically upward and parallel to the axis of the telescopic support rod is provided on the side of the telescopic support rod. A lower mounting base connects the outer wall of the hydraulic rod to the outer wall of the lower section of the telescopic support rod to fix the two. An upper connecting base connects the free end of the hydraulic rod to the outer wall of the upper section of the telescopic support rod to fix the two. The hydraulic rod drive method enables smooth lifting and lowering of the telescopic support rod, and the lifting adjustment is flexible and reliable. The height of the top plate and the extended pipe can be precisely adjusted according to the dust level of the construction site and the operational requirements, allowing water mist to adsorb dust at the optimal height. Compared with existing fixed-height dust suppression devices, the dust suppression efficiency is significantly improved.

[0014] Preferably, the cleaning module includes a U-shaped box, a U-shaped sponge block, and a connecting arm. The U-shaped box is located on the outside of the winding box, and the atomizing nozzle passes through the U-shaped box. The inner wall of the U-shaped box is covered with a U-shaped sponge block, which fits against the extension tube and the atomizing nozzle. A connecting arm connects the outer wall of the U-shaped box and the outer wall of the winding box. During the winding process of the extension tube, the U-shaped sponge block can simultaneously wipe and clean the dust and impurities on the outer wall of the extension tube and the surface of the atomizing nozzle, avoiding dust accumulation and clogging of the atomizing nozzle, ensuring that the atomizing nozzle always maintains a good spray effect, eliminating the need for frequent manual cleaning, further improving the ease of use and maintenance of the device, and ensuring long-term stable dust reduction efficiency.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The technical solution of this application effectively solves the defects of the fixed position of the existing wall water mist system by combining the design of a movable base, telescopic rod, electric lifting mechanism and retractable water pipe. The movable base gives the whole device the ability to move flexibly, and the working location can be adjusted at any time according to the location changes of different dust-prone areas in the construction site, without the need for fixed installation in a specific position. With the telescopic rod and electric lifting mechanism to adjust the height of the top plate, the working height of the water pipe and spray nozzle can be flexibly changed. Then, multiple sets of water pipes can be hung at a distance through the hooks at the end of the water pipe, so that the water pipe can be conveniently arranged above the dust suppression location. This completely gets rid of the limitation of the wall water mist system that can only cover the perimeter of the wall, and achieves precise coverage of the core area inside the construction site, eliminating dust suppression blind spots. Meanwhile, this technical solution significantly improves upon the limitations of existing spray cannons in terms of limited coverage and insufficient dust suppression efficiency. Multiple sets of retractable water pipes wound within the top plate can be unfolded and arranged into an umbrella-like structure during operation, greatly expanding the lateral range of water mist coverage. This adapts to the all-area dust suppression needs of large construction sites, providing more comprehensive and uniform coverage compared to the directional spraying method of spray cannons. Furthermore, the flexible mobility of the mobile base and the ease of water pipe arrangement allow for rapid water pipe arrangement and spray dust suppression in multiple areas simultaneously without frequent adjustments to the device position or individual operations, significantly improving dust suppression efficiency and effectively suppressing dust spread. In addition, the booster pump and filtered water tank on the mobile base provide a stable and clean water source for spraying operations, further ensuring the stability of the dust suppression effect. The overall solution is highly adaptable to the complex and ever-changing working environment of construction sites, meeting the needs for efficient and comprehensive dust suppression. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view A of the top plate of the present invention; Figure 3This is a perspective view B of the top plate of the present invention; Figure 4 This is a perspective view C of the top plate of the present invention; Figure 5 This is a front view of the top plate of the present invention; Figure 6 This is a front view of the present invention; Figure 7 This is a bottom view of the present invention.

[0017] Reference numerals: 1. Movable seat; 2. Telescopic support rod; 3. Lifting mechanism; 31. Hydraulic rod; 32. Lower mounting seat; 33. Upper connecting seat; 4. Top plate; 5. Extension assembly; 51. Extension tube; 52. Atomizing nozzle; 53. Hook assembly; 6. Rewinding module; 61. Rewinding box; 62. Rewinding tube; 63. Winding rod; 64. Torsion spring; 65. Connecting tube; 66. Multi-port connecting tube; 7. Cleaning module; 71. Recurve box; 72. Recurve sponge block; 73. Connecting arm; 8. Booster pump; 9. Filter water tank; 10. Water supply hose; 11. Lighting lamp; 12. Counterweight. Detailed Implementation

[0018] Please see Figure 1-7 This invention provides a technical solution: a dust suppression spray device for construction sites, comprising a movable base 1, a telescopic support rod 2, a lifting mechanism 3, and a top plate 4. The movable base 1 provides a flexible base for the entire device, eliminating the need for the device to be fixedly installed in a specific location such as a wall. Operators can adjust the working location of the device at any time according to the dynamic changes of different dust-prone areas such as earthwork operation areas and material storage areas within the construction site, effectively avoiding the dust suppression blind spot problem caused by the fixed location of traditional wall water mist systems. The telescopic support rod 2 is erected at the top center of the movable base 1. The lifting mechanism 3 is located on the side of the telescopic support rod 2 and is parallel to it. The lifting mechanism 3 includes a hydraulic rod 31, a lower mounting base 32, and an upper connecting base 33. The hydraulic rod 31 is stably connected to the telescopic support rod 2 through the lower mounting base 32 and the upper connecting base 33. Its free end is vertically upward and parallel to the axis of the telescopic support rod 2. The telescopic movement of the hydraulic rod 31 can precisely drive the telescopic support rod 2 to extend and retract up and down, thereby driving the top plate 4 to achieve height adjustment. The working height can be flexibly adapted according to the height of dust rising and the spatial limitations of the construction area, so that subsequent spraying operations can be carried out at the height most conducive to dust adsorption. Compared with the shortcomings of traditional spray cannons with fixed height or limited adjustment range, the targeting of dust suppression is greatly improved. The top plate 4 is rotatably installed on the top end face of the telescopic support rod 2 and is coaxial with the telescopic support rod 2. The operator can adjust the arrangement angle of the subsequent extension components 5 by rotating the top plate 4. With the unfolding of multiple sets of extension components 5, it can more flexibly adapt to construction areas of different shapes and further expand the coverage area.

[0019] The device also includes an extension component 5, a rewind module 6, and a cleaning module 7. The extension component 5 is located on the outside of the top plate 4 and can be connected to an external location. It includes an extension tube 51, an atomizing nozzle 52, and a hook 53. Multiple sets of extension tubes 51 are arranged around the top plate 4. Each extension tube 51 has an array of atomizing nozzles 52 connected to its interior, which can form a dense water mist layer. The hook 53 connected to the end of the extension tube 51 away from the top plate 4 can be easily hung on external support structures such as scaffolding and temporary support poles in the construction site. This allows multiple sets of extension tubes 51 to unfold in different directions and form an umbrella-like coverage shape, completely breaking the limitations of traditional spray cannons that can only spray in a specific direction and have a limited coverage area. It can achieve comprehensive coverage of a large construction site, especially taking into account the dust suppression needs of the core construction area inside the site.

[0020] The winding module 6 is located inside the top plate 4 and is used to tension and wind up the extension component 5. It includes a winding box 61, a winding tube 62, a winding rod 63, a torsion spring 64, a connecting tube 65, and a multi-way connecting tube 66. A hollow torsion spring 64 is integrally formed at the center of the inner side of the top plate 4. Multiple arrays of winding boxes 61 are installed on the inner side of the top plate 4 around the torsion spring 64. The winding boxes 61 provide a neat storage space for the winding tube 62, preventing the tube from getting tangled or worn when the tube is moved or idle, thus extending the service life of the tube. The winding rod 63, which is rotatably connected inside the winding box 61, is wound with the winding tube 62. The winding tube 62 is connected to the extension tube 51. A torsion spring 64 is installed at the connection shaft between the winding rod 63 and the winding box 61. The return spring force of the torsion spring 64 can automatically wind up the extension tube 51 when it is not in use, without the need for manual adjustment. This design greatly improves operational convenience, solving the problem of frequent movement and repositioning required by traditional spray cannons. When simultaneously dispersing dust in multiple areas, the extension tube 51 can be quickly unfolded and retracted, improving operational efficiency. The outer wall of the torsion spring 64 is connected to a connecting tube 65 that communicates with its interior. The end of the connecting tube 65 away from the torsion spring 64 extends to the bottom of the top plate 4 and connects to the water supply hose 10. The take-up tube 62 is connected to the torsion spring 64, and a multi-port connecting tube 66 is integrally formed in the middle section of the take-up tube 62. The hollow torsion spring 64, in conjunction with the connecting tube 65, enables smooth communication between the water supply hose 10 and the take-up tube 62. The multi-port connecting tube 66 ensures that the water source can be evenly distributed to each set of extension tubes 51, allowing all atomizing nozzles 52 to spray stably, ensuring the uniformity of water mist coverage, and avoiding the problem of poor dust suppression effect caused by sparse water mist in some areas.

[0021] The cleaning module 7 is located between the extension component 5 and the winding module 6 and can clean the extension component 5. It includes a U-shaped box 71, a U-shaped sponge block 72, and a connecting arm 73. The U-shaped box 71 is fixed to the outside of the winding box 61 through the connecting arm 73. The atomizing nozzle 52 passes through the U-shaped box 71, and the inner wall of the U-shaped box 71 is covered with a U-shaped sponge block 72 that fits against the extension tube 51 and the atomizing nozzle 52. During the winding process of the extension tube 51, the U-shaped sponge block 72 can simultaneously wipe the outer wall of the extension tube 51 and the nozzle of the atomizing nozzle 52, and remove the attached dust, mud and other impurities in a timely manner, so as to avoid impurities clogging the nozzle and affecting the spraying effect. It eliminates the need for operators to frequently disassemble and clean, reduces maintenance costs, and ensures the long-term stable operation of the device.

[0022] The mobile base 1 is also equipped with a booster pump 8, a water filter tank 9, a water supply hose 10, a lighting lamp 11, and a counterweight 12. The water filter tank 9 is located on the mobile base 1 and is connected to the input end of the booster pump 8 via a pipe. A connector for connecting to an external water supply pipe is located on the side of the water filter tank 9 away from its connection to the booster pump 8. The water filter tank 9 filters the incoming water, effectively intercepting impurities and particles in the water to prevent them from entering the booster pump 8 and the atomizing nozzle 52 and causing blockages, ensuring smooth operation of the water system. The connector allows for quick and easy connection to an external water source, improving work preparation efficiency. The booster pump 8 is installed on the mobile base 1, and its output end is connected to the end of the water supply hose 10 away from the top plate 4 via a pipe fitting. The booster pump 8 provides stable water pressure for spraying operations, enabling the atomizing nozzle 52 to spray a fine and uniform water mist, improving the separation of water mist and dust particles. Compared to traditional spray equipment with unstable water pressure leading to uneven water mist particle size, the increased contact area and adsorption efficiency of the particles result in a more significant dust suppression effect. The water supply hose 10 is wound around the periphery of the telescopic support rod 2 and connected to the connecting pipe 65 of the winding module 6. This winding method does not affect the lifting and lowering of the telescopic support rod 2 and ensures a continuous water supply from the moving seat 1 to the top plate 4, preventing pipeline breakage due to pulling. The ring light 11 installed at the bottom of the top plate 4 near the outer edge provides sufficient illumination at night or in low-light working environments, allowing the spray dust suppression operation to be carried out around the clock, expanding the applicable scenarios of the device. The counterweight 12 installed inside the moving seat 1 effectively lowers the center of gravity of the device, enhancing the stability of the device, preventing tipping, and improving safety, whether the telescopic support rod 2 is raised to a high position or during movement.

[0023] During actual dust suppression operations, the operator first pulls the extension pipe 51 out of the take-up box 61, and uses the hook 53 to hang each extension pipe 51 on the corresponding external support structure. By rotating the top plate 4, the operator adjusts the unfolding angle of the extension pipe 51 so that multiple sets of extension pipes 51 form a coverage shape suitable for the construction area. Then, the operator controls the hydraulic rod 31 to drive the telescopic support rod 2 to extend and retract, adjusting the top plate 4 to a suitable working height. Next, the operator connects the external pump water pipe to the connection port of the filter water tank 9, injects water into the filter water tank 9, and after the filter water tank 9 performs preliminary filtration of the water, the operator starts the booster pump 8. The booster pump 8 pumps the filtered water into the connecting pipe 65 through the water supply hose 10, and then distributes it to each set of extension pipes 51 through the torsion spring 64, the take-up pipe 62, and the multi-way connecting pipe 66. Finally, the water is atomized and sprayed out by the atomizing nozzle 52 to form a dense water mist, achieving comprehensive and efficient dust suppression of the target area. After the work is completed, the hook 53 is released, and the winding rod 63 automatically winds the winding tube 62 and the extension tube 51 into the winding box 61 under the reset action of the torsion spring 64. During the winding process, the spiral sponge block 72 cleans the extension tube 51 and the atomizing nozzle 52 simultaneously to ensure the spraying effect of the device when it is used next time. After that, the moving seat 1 can be pushed to transfer the device to the next work location or storage area.

[0024] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A dust suppression spraying device for construction sites, characterized in that, include: The movable seat (1), telescopic support rod (2), lifting mechanism (3) and top plate (4) are installed vertically at the top center of the movable seat (1). The lifting mechanism (3) is located on the side of the telescopic support rod (2) and is parallel to the lifting mechanism (3) and can drive the telescopic support rod (2) to extend and retract. The top plate (4) is rotatably installed on the top end face of the telescopic support rod (2) and is coaxial with the telescopic support rod (2). The components include an extension assembly (5), a winding module (6), and a cleaning module (7). The extension assembly (5) is located on the outside of the top plate (4) and can be connected to an external location. The winding module (6) is located on the inside of the top plate (4) and is used to tension and wind up the extension assembly (5). The cleaning module (7) is located between the extension assembly (5) and the winding module (6) and can clean the extension assembly (5).

2. The dust suppression spraying device for construction sites according to claim 1, characterized in that: The movable seat (1) is also equipped with a booster pump (8) and a water supply hose (10). The water supply hose (10) is wrapped around the periphery of the telescopic support rod (2) and connected to the winding module (6). The booster pump (8) is installed on the movable seat (1) and its output end is connected to the end of the water supply hose (10) away from the top plate (4) through a pipe fitting.

3. A dust suppression spraying device for construction sites according to claim 2, characterized in that: The movable base (1) is also equipped with a booster pump (8) and a filter water tank (9). The filter water tank (9) is located on the movable base (1) and is connected to the input end of the booster pump (8) through a pipe. The filter water tank (9) is provided with a connection port for connecting to an external pump water pipe on the side away from the side where it is connected to the booster pump (8).

4. A dust suppression spraying device for construction sites according to claim 3, characterized in that: The extension assembly (5) includes an extension tube (51), an atomizing nozzle (52), and a hook (53). Multiple sets of extension tubes (51) are arranged around the top plate (4). The surface of the extension tube (51) is arranged with an array of atomizing nozzles (52) communicating with its interior. The end of the extension tube (51) away from the top plate (4) is connected to a hook (53) that can be hooked to an external location.

5. A dust suppression spraying device for construction sites according to claim 4, characterized in that: The winding module (6) includes a winding box (61), a winding tube (62), a winding rod (63), and a torsion spring (64). A hollow torsion spring (64) is integrally formed at the center of the inner side of the top plate (4). Multiple winding boxes (61) are installed in an array on the inner side of the top plate (4) at the position surrounding the torsion spring (64). The winding rod (63) is rotatably connected inside the winding box (61). The winding tube (62) is wound and connected on the winding rod (63). The winding tube (62) is connected to the extension tube (51). The torsion spring (64) is installed at the connection shaft between the winding rod (63) and the winding box (61).

6. A dust suppression spraying device for construction sites according to claim 5, characterized in that: The winding module (6) also includes a connecting pipe (65) and a multi-port connecting pipe (66). The outer wall of the torsion spring (64) is connected to the connecting pipe (65) which communicates with its interior. The end of the connecting pipe (65) away from the torsion spring (64) extends to the bottom of the top plate (4) and is connected to the water supply hose (10). The winding pipe (62) is connected to the torsion spring (64). The winding pipe (62) is integrally formed with a multi-port connecting pipe (66) in the middle section.

7. A dust suppression spraying device for construction sites according to claim 6, characterized in that: The lifting mechanism (3) includes a hydraulic rod (31), a lower mounting seat (32) and an upper connecting seat (33). The telescopic support rod (2) has a hydraulic rod (31) with its free end facing vertically upward and parallel to the axis of the telescopic support rod (2). The lower mounting seat (32) is connected between the outer wall of the hydraulic rod (31) and the lower section of the telescopic support rod (2) to fix the two. The upper connecting seat (33) is connected between the free end of the hydraulic rod (31) and the upper section of the telescopic support rod (2) to fix the two.

8. A dust suppression spraying device for construction sites according to claim 7, characterized in that: The cleaning module (7) includes a U-shaped box (71), a U-shaped sponge block (72), and a connecting arm (73). The U-shaped box (71) is provided on the outside of the take-up box (61). The atomizing nozzle (52) passes through the U-shaped box (71). The U-shaped sponge block (72) is laid on the inner wall of the U-shaped box (71). The U-shaped sponge block (72) is attached to the extension pipe (51) and the atomizing nozzle (52). The connecting arm (73) is connected between the outer wall of the U-shaped box (71) and the outer wall of the take-up box (61).

9. A dust suppression spraying device for construction sites according to claim 8, characterized in that: A ring-shaped lighting lamp (11) is installed at the bottom of the top plate (4) near the outer edge, and a counterweight (12) is installed on the inner side of the movable seat (1).

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