A dust rotating spray dust falling device for construction

Abstract

The utility model relates to spray dust falling device technical field and disclose a kind of building construction dust rotating spray dust falling device, including concave bottom plate, the upper surface of concave bottom plate is equipped with circular chute, spray dust falling device is arranged on concave bottom plate, and spray dust falling device includes second protective cover, and second protective cover is fixedly connected in the lower surface of concave bottom plate, and the transmission of rotating pipe transmission is realized by setting first drive motor and two first gear drives whole 360 ° rotation, while close-range first atomizing nozzle and long-distance second atomizing nozzle will be synchronous 360 ° rotation spray, form close-range full coverage, long-distance wide radiation double dust falling net, no dead angle capture construction dust, compared with traditional fixed spray device, dust falling range is wider, near and far are considered, can efficiently deal with different distance dust problem in building construction, and mobile wheel design facilitates device flexible shift, protective cover protects internal component from dust pollution.

Description

Technical Field

[0001] This utility model relates to the technical field of spray dust suppression devices, specifically a rotary spray dust suppression device for construction dust. Background Technology

[0002] During construction, processes such as earthwork excavation, building material loading and unloading, and concrete mixing easily generate a large amount of dust, which not only pollutes the surrounding air environment but also affects the health of construction workers and may even cause environmental problems such as smog. Spray dust suppression devices, as the core equipment for controlling construction dust, atomize water into fine mist, which collides and adsorbs dust particles in the air, ultimately causing the dust to settle, thus achieving the purpose of dust suppression.

[0003] Currently, the existing dust suppression spray devices for construction dust in the industry are mainly simple rotary spray devices. These simple rotary spray devices use a motor to drive a single set of nozzles to rotate, but the nozzle type is limited and can only achieve either short-range or long-range spraying. If only short-range atomizing nozzles are equipped, the droplet coverage is limited to a 3-5 meter radius around the device, failing to reach distant dust sources (often 6-10 meters away) such as foundation pits and high material piles, leading to the rampant spread of dust over long distances. If only long-range direct-fire nozzles are equipped, the droplet dispersion in the short-range area (1-3 meters) is insufficient, resulting in low droplet density per unit volume, making it difficult to effectively adsorb high concentrations of dust. Furthermore, the high-pressure water flow from the direct-fire nozzles can easily erode the construction surface, damaging the flatness of the work area. If both short-range and long-range dust need to be addressed simultaneously during construction, two types of devices must be installed separately, increasing equipment procurement costs (an additional 30%-50%), occupying more construction space, and affecting material transportation and personnel access. Utility Model Content

[0004] Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a rotating spray dust suppression device for construction dust, which solves the problem that existing construction dust suppression devices in the industry are mainly simple rotating spray devices. These simple rotating spray devices use a motor to drive a single set of nozzles to rotate, but the nozzles are of a single type and can only achieve either short-range or long-range spraying.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a construction dust rotary spray dust suppression device, comprising a concave base plate, a circular groove on the upper surface of the concave base plate, a spray dust suppression device on the concave base plate, the spray dust suppression device comprising a second protective cover, the second protective cover being fixedly connected to the lower surface of the concave base plate, an L-shaped fixing rod being fixedly connected to the lower surface of the second protective cover, and an external water supply pipe connector being fixedly connected to the left side of the L-shaped fixing rod; Among them, the upper surface of the external water supply pipe connector is rotatably connected to a rotating pipe, the upper end of which rotatably penetrates into the interior of the second protective cover and rotatably penetrates out of the upper surface of the concave bottom plate. Among them, the outer wall of the rotating tube is fixedly sleeved with a first gear, the bottom of the second protective cover is fixedly connected with a first drive motor, the output end of the first drive motor is fixedly connected with the same first gear, and the two first gears mesh together. Among them, a circular plate is fixedly sleeved on the outer wall of the rotating tube, a circular sleeve is fixedly connected to the lower surface of the circular plate, and the lower end of the circular sleeve is slidably connected to the circular groove. An L-shaped fixing plate is fixedly connected to the upper surface of the circular plate.

[0006] Preferably, the L-shaped fixing plate is located on the rear side of the rotating tube, and a concave plate is fixedly connected to the rear surface of the L-shaped fixing plate, and a first protective cover is fixedly connected to the left side of the concave plate. The concave plate has connecting shafts rotatably connected to its left and right inner walls, and connecting pipes are fixedly connected to the opposite faces of the two connecting shafts. Multiple first atomizing nozzles are fixedly connected to the rear surface of the connecting pipes. The upper surface of the connecting pipe is fixedly connected to a water supply hose that communicates with its interior, and the end of the water supply hose away from the connecting pipe is fixedly connected to the upper surface of the rotating pipe.

[0007] Preferably, the left end of the connecting shaft on the left side rotates through into the interior of the first protective cover, and a second gear is fixedly sleeved on the outer wall of the connecting shaft on the left side; The first protective cover has a second drive motor fixedly installed inside, and the output end of the second drive motor is fixedly connected to the same second gear, with the two second gears meshing together.

[0008] Preferably, a rectangular extension plate is fixedly connected to the front surface of the circular plate, and concave fixing plates are fixedly connected to both the left and right sides of the rectangular extension plate, and a conical cylinder is fixedly connected to the opposite face of the two concave fixing plates. The inner wall of the conical cylinder is fixedly connected to a circular tube, and the front surface of the circular tube is fixedly connected to multiple second atomizing nozzles arranged in a circular array.

[0009] Preferably, a water supply pipe communicating with the interior of the circular tube is fixedly connected to the rear surface of the circular tube, and the rear ends of both water supply pipes extend through the rear surface of the conical tube. Both water supply pipes are fixedly connected to the rotating pipe.

[0010] Preferably, a fan is fixedly connected to the upper surface of the rectangular extension plate, and an air supply pipe is fixedly connected to the air outlet end of the fan.

[0011] Preferably, the end of the air duct away from the fan is fixedly connected to the rear surface of the conical cylinder and extends into the interior of the conical cylinder.

[0012] Preferably, four casters are fixedly connected to the lower surface of the concave base plate.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides a rotating spray dust suppression device for construction dust, which has the following beneficial effects: By setting up a first drive motor and two first gears to drive the rotating tube transmission, the whole device achieves 360° rotation. At the same time, the first atomizing nozzle at close range and the second atomizing nozzle at far range will simultaneously perform 360° rotating spray, forming a dual dust suppression net with full coverage at close range and wide radiation at far range. It captures construction dust without dead angles. Compared with traditional fixed spray devices, the dust suppression range is wider and covers both near and far distances. It can effectively deal with dust problems at different distances in construction. The design of the moving wheels makes it easy to move the device flexibly, and the protective cover protects the internal components from dust pollution, further improving the practicality and dust suppression efficiency of the rotating spray dust suppression device for construction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the rotary spray dust suppression device for construction dust according to this utility model; Figure 2 This is a schematic diagram of the lower surface of the entire utility model; Figure 3 This is a schematic diagram of the interior of the conical cylinder of this utility model; Figure 4 This is a schematic diagram of the second gear connection of this utility model; Figure 5 This is a schematic diagram showing the position of the circular groove of this utility model.

[0015] In the diagram: 1. Concave base plate; 2. Circular plate; 3. Rectangular extension plate; 4. Fan; 5. Concave fixing plate; 6. Conical cylinder; 7. Air supply pipe; 8. Water supply pipe; 9. Rotating pipe; 10. Water supply hose; 11. Connecting pipe; 12. Concave plate; 13. First atomizing nozzle; 14. First protective cover; 15. L-shaped fixing plate; 16. External water supply pipe connector; 17. L-shaped fixing rod; 18. Second protective cover; 19. Circular sleeve; 20. Second atomizing nozzle; 21. Circular tube; 22. First gear; 23. First drive motor; 24. Second drive motor; 25. Connecting shaft; 26. Second gear; 27. Circular groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 This utility model provides a new technical solution: a construction dust suppression rotating spray device, including a circular chute 27: the circular chute 27 is opened on the upper surface of the concave base plate 1, the inner wall of the circular chute 27 is slidably connected to the circular sleeve 19, the circular chute 27 provides the circular sleeve 19 with an annular sliding track, and cooperates with the circular sleeve 19 to limit the rotation direction of the circular plate 2, so as to avoid the circular plate 2 and the spray component above it from deviating or shaking when rotating, and ensure the stability of 360° rotating spray.

[0018] Second protective cover 18: The lower end of the rotating tube 9 passes through the interior of the second protective cover 18. The second protective cover 18 protects the first drive motor 23, the first gear 22 and the lower part of the rotating tube 9 inside, preventing construction dust from entering and causing wear or failure of the components, and extending the service life of the power components.

[0019] L-shaped fixing rod 17: L-shaped fixing rod 17 provides a stable installation support for the external water supply pipe connector 16, ensuring that the external water supply pipe is not easily loosened after being connected to the connector, thus ensuring the stability of the water supply pipeline.

[0020] External water supply pipe connector 16: External water supply pipe connector 16 is used to connect an external water supply pipe to introduce water into the rotating pipe 9. Its rotating connection design with the rotating pipe 9 ensures that the water supply is unobstructed when the rotating pipe 9 rotates, thus achieving continuous water supply in the rotating state.

[0021] Rotating pipe 9: The upper surface of rotating pipe 9 is fixedly connected to water supply hose 10. Rotating pipe 9 is fixedly connected to two water supply pipes 8. Rotating pipe 9 is the core water supply and rotation transmission component of the device. It not only delivers external water source to water supply hose 10 and water supply pipes 8, but also rotates under the drive of the first gear 22 to provide rotation power for the upper spray component and realize 360° spraying.

[0022] First gear 22: The first gear 22 is the power transmission medium, which transmits the rotational power of the first drive motor 23 to the rotating tube 9. Through gear meshing, the rotating tube 9 is driven to rotate synchronously, ensuring that the rotational speed is stable and controllable.

[0023] First drive motor 23: The first drive motor 23 is the power source for the overall rotation of the device. It drives the first gear 22 to rotate through the output end, thereby driving the rotating tube 9, the circular plate 2 and all the spray components above to rotate, providing power for 360° all-round dust suppression.

[0024] Circular plate 2: Circular plate 2 is the mounting carrier for the spray components. It integrates components such as L-shaped fixing plate 15 and rectangular extension plate 3 into one unit. It rotates synchronously with the rotating pipe 9, driving all spray components to achieve 360° rotational spraying.

[0025] Circular sleeve 19: Circular sleeve 19 slides in conjunction with circular groove 27 to provide guiding support for the rotation of circular plate 2, distribute the weight of circular plate 2 and the components above it, prevent the rotating tube 9 from bending due to excessive force, and ensure smooth rotation.

[0026] L-shaped fixing plate 15: The L-shaped fixing plate 15 provides mounting support for the concave plate 12 and the close-range spraying component, fixing them on the circular plate 2 to ensure that they rotate synchronously with the circular plate 2, thereby achieving close-range rotating spraying.

[0027] Concave plate 12: The left and right inner walls of the concave plate 12 are rotatably connected to the connecting shaft 25. The concave plate 12 provides a rotation support frame for the connecting shaft 25 and the connecting pipe 11, limiting the rotation range of the connecting pipe 11 and ensuring that the angle adjustment of the first atomizing nozzle 13 is stable and controllable.

[0028] First protective cover 14: The first protective cover 14 protects the internal second drive motor 24, second gear 26 and left end of connecting shaft 25 to prevent construction dust from entering and affecting the operation of the components, and to ensure the stability of the angle adjustment components.

[0029] Connecting shaft 25: Connecting shaft 25 is a rotating support component of connecting pipe 11. It transmits the power of the second drive motor 24 to connecting pipe 11, causing connecting pipe 11 to rotate around the shaft, thereby realizing the pitch angle adjustment of the first atomizing nozzle 13.

[0030] Connecting pipe 11: Connecting pipe 11 is the water supply and installation carrier for close-range spraying. It distributes the water delivered by the water supply hose 10 to multiple first atomizing nozzles 13, and at the same time, it rotates with the connecting shaft 25 to adjust the nozzle angle to ensure full coverage of the close-range dust area.

[0031] First atomizing nozzle 13: Multiple first atomizing nozzles 13 are fixedly connected to the rear surface of the connecting pipe 11. The first atomizing nozzle 13 atomizes the water transported by the connecting pipe 11 and sprays it out. The atomized water mist can accurately cover the nearby dust area, quickly adsorb and settle dust, and achieve near-distance dust suppression.

[0032] Water supply hose 10: Water supply hose 10 is a flexible water supply channel connecting pipe 11 and rotating pipe 9. Its flexibility ensures that water supply is not obstructed when the pitch angle of connecting pipe 11 is adjusted, so as to achieve continuous water supply in the angle adjustment state.

[0033] Second gear 26: The second gear 26 is the power transmission medium for angle adjustment. It transmits the rotational power of the second drive motor 24 to the connecting shaft 25, which drives the connecting pipe 11 and the first atomizing nozzle 13 to rotate, thereby achieving precise adjustment of the nozzle angle.

[0034] Second drive motor 24: The second drive motor 24 is the power source for adjusting the angle of the first atomizing nozzle 13. It drives the second gear 26 to rotate through the output end, thereby driving the connecting shaft 25 and the connecting pipe 11 to rotate, so as to realize the flexible adjustment of the pitch angle of the first atomizing nozzle 13.

[0035] Rectangular extension plate 3: The rectangular extension plate 3 provides installation support for the concave fixing plate 5, the conical cylinder 6 and the fan 4, and fixes the long-distance spraying component on the circular plate 2 to ensure that it rotates synchronously with the circular plate 2 to achieve long-distance rotating spraying.

[0036] Concave fixing plate 5: The concave fixing plate 5 fixes the conical cylinder 6 on the rectangular extension plate 3, ensuring that the conical cylinder 6 does not shake during the high-pressure airflow and rotation of the fan, thus ensuring the stability of long-distance spraying.

[0037] Conical tube 6: Conical tube 6 is an airflow converging component for long-distance spraying. It can converge the high-pressure airflow delivered by the fan 4, enhance the directionality and impact of the airflow, and work with the second atomizing nozzle 20 to push the atomized water mist to a greater distance, expanding the dust suppression range.

[0038] Circular tube 21: A water supply pipe 8 is fixedly connected to the rear surface of the circular tube 21. The circular tube 21 is the water supply and installation carrier for long-distance spraying. The water delivered by the water supply pipe 8 is distributed to multiple second atomizing nozzles 20. The nozzle design in a circular array ensures a wider water mist coverage area and, in conjunction with airflow, achieves long-distance wide-radiation dust suppression.

[0039] Second atomizing nozzle 20: Multiple second atomizing nozzles 20 are fixedly connected to the front surface of the circular tube 21. The second atomizing nozzle 20 atomizes the water transported by the circular tube 21 and sprays it out. With the help of the high-pressure airflow in the conical tube 6, the spray distance of the atomized water mist is greatly increased, which can cover the dust area at a distance and achieve dust suppression at a distance.

[0040] Water supply pipe 8: The front ends of both water supply pipes 8 are fixedly connected to the rear surface of the circular pipe 21 (internal communication), and the rear ends of both water supply pipes 8 penetrate through the rear surface of the conical cylinder 6 and are fixedly connected to the rotating pipe 9. The water supply pipe 8 is the water supply channel between the circular pipe 21 and the rotating pipe 9, stably delivering the water transported by the rotating pipe 9 to the circular pipe 21, providing a water source for the second atomizing nozzle 20, and ensuring continuous long-distance spraying.

[0041] Fan 4: Fan 4 is the airflow power source for long-distance spraying. It generates high-pressure airflow and delivers it to the cone 6 through the air supply pipe 7, providing thrust for the atomized water mist sprayed by the second atomizing nozzle 20, greatly increasing the water mist spraying distance and enhancing the long-distance dust suppression effect.

[0042] Air duct 7: Air duct 7 is the airflow delivery channel between fan 4 and cone 6. It stably delivers the high-pressure airflow generated by the fan to cone 6, ensuring that the airflow can effectively promote atomization of water mist and achieve long-distance spraying.

[0043] Furthermore, when using the construction dust rotary spray dust suppression device, the device is first moved flexibly to the key construction dust control area (such as earthwork operation area, building material loading and unloading area, etc.) by the four moving wheels on the lower surface of the concave base plate 1. Then, the external water supply pipe is sealed and connected to the external water supply pipe connector 16 on the left side of the L-shaped fixed rod 17 to complete the connection of the water supply pipeline. Among them, the first drive motor 23 at the bottom of the second protective cover 18 is started. The output end of the first drive motor 23 drives the first gear 22 fixed thereto to rotate. Since the two first gears 22 mesh with each other, they will drive the rotating tube 9 to rotate synchronously. The circular plate 2 on the outer wall of the rotating tube 9 rotates together with it. The circular sleeve 19 on the lower surface of the circular plate 2 slides along the circular groove 27 of the concave bottom plate 1. Through sliding cooperation, the circular plate 2 and all the spray components above it are ensured to rotate smoothly, avoiding displacement due to centrifugal force, and providing stable support for achieving 360° all-round dust suppression. Specifically, for short-range dust, such as around construction workers or near equipment, the second drive motor 24 inside the first protective cover 14 is activated. The output end of the second drive motor 24 drives the second gear 26 to rotate. Through the two meshing second gears 26, the left connecting shaft 25 and the connecting pipe 11 in the concave plate 12 are rotated. The connecting pipe 11 can adjust its pitch angle around the connecting shaft 25, such as from 45° downward from horizontal to 30° upward from horizontal. At the same time, the water in the rotating pipe 9 is transported to the connecting pipe 11 through the water supply hose 10. After being atomized by multiple first atomizing nozzles 13 on the rear surface of the connecting pipe 11, the atomized water mist can accurately cover the short-range dust area, quickly adsorb and settle dust, and the flexible characteristics of the water supply hose 10 ensure that the water supply is not obstructed when the angle of the connecting pipe 11 is adjusted. For long-distance, large-area dust, such as above the foundation pit or the top of the material pile, the fan 4 on the upper surface of the rectangular extension plate 3 and the second atomizing nozzle 20 inside the conical cylinder 6 are activated. The high-pressure airflow generated by the fan 4 is transported to the inside of the conical cylinder 6 through the air supply pipe 7. At the same time, the water in the rotating pipe 9 flows into the circular pipe 21 through two water supply pipes 8, and is then atomized and sprayed out by multiple second atomizing nozzles 20 arranged in a circular array on the front surface of the circular pipe 21. With the help of the high-pressure airflow, the spray distance of the atomized water mist is greatly increased, which can cover a wider dust area and achieve long-distance dust suppression. The structural design of the conical cylinder 6 can converge the airflow, further enhancing the directionality and range of the spray. As the circular plate 2 rotates continuously under the drive of the first drive motor 23, the first atomizing nozzle 13 at close range and the second atomizing nozzle 20 at long range will simultaneously perform 360° rotating spraying, forming a double dust suppression net that provides full coverage at close range and wide radiation at long range, capturing construction dust without dead angles. The first protective cover 14 and the second protective cover 18 respectively protect the second drive motor 24, the first drive motor 23 and gear components inside, preventing construction dust from entering and causing component wear or failure, and extending the service life of the device. When the dust concentration decreases, the fan 4 and each atomizing nozzle can be turned off first, then the second drive motor 24 and the first drive motor 23 can be turned off in sequence, the external water supply pipe can be disconnected, and the device can be moved to the next dust area or storage point by the moving wheels. If it is necessary to adjust the dust reduction range, the rotation speed of the first drive motor 23 can be controlled separately to change the rotation speed, or the angle of the first atomizing nozzle 13 can be adjusted by adjusting the second drive motor 24 to adapt to the dust reduction needs of different construction scenarios. The device achieves 360° rotation by driving a rotating tube via a first drive motor 23 and two first gears 22. Simultaneously, the first atomizing nozzle 13 at close range and the second atomizing nozzle 20 at long range rotate and spray 360°, forming a dual dust suppression net that provides full coverage at close range and wide radiation at long range. This effectively captures construction dust without blind spots. Compared to traditional fixed spray devices, it has a wider dust suppression range and covers both near and far distances, efficiently addressing dust problems at different distances during construction. The movable wheel design facilitates flexible relocation of the device, and the protective cover protects internal components from dust contamination, further improving the practicality and dust suppression efficiency of the rotating spray dust suppression device for construction.

[0044] Example 1: Application of a spray device with adjustable side spray assembly in deep foundation pit construction scenarios A construction project is carrying out earthwork excavation work on a 5-meter deep foundation pit. There are three layers of dust in the foundation pit: "bottom dust (generated by excavator operation), side wall dust (generated by soil falling during stacking), and pit opening dust (generated by material transfer)". The original device's first atomizing nozzle can only adjust the pitch angle backward, which cannot cover the side walls and bottom of the foundation pit. If only the original device is placed at the pit opening, three devices are needed to be aimed at the pit opening, side walls, and bottom respectively, which increases equipment investment, occupies the working space at the pit opening, and affects the excavator's entry and exit. At this time, the original "single-sided rear spray first atomizing nozzle of the connecting pipe" is optimized into "multi-directional atomizing nozzle assembly with adjustable side spray on the rear and both sides of the connecting pipe". Based on the existing nozzles on the rear surface of the connecting pipe, two sets of independently adjustable side spray nozzles are added to each side. The side spray nozzles can rotate 0-90° around the axis of the connecting pipe, forming a three-sided coverage of "rear spray and double side spray" in conjunction with the original rear spray nozzles. When the device is placed at the edge of the pit opening, the side spray nozzles tilt downward at 45° to cover the side walls of the pit, and the rear spray nozzles horizontally downward to cover the bottom of the pit. Without the need for additional devices, the device can achieve full-area dust capture of the bottom, side walls and opening of the pit, solving the coverage blind spot problem of the original single side spray.

[0045] The optimized side spray nozzles of the connecting pipe adopt a folding design. When the excavator enters or exits the foundation pit, the side spray nozzles can be folded upwards and pressed tightly against the connecting pipe to avoid collision damage with the equipment. When working, they can be unfolded to restore multi-directional spraying without affecting the mechanical operation process in the foundation pit. Compared with the original device, which required frequent movement to avoid equipment, the construction efficiency is improved.

[0046] The side spray nozzles and the rear spray nozzles share a common water supply pipe, eliminating the need for additional water supply pipelines and ensuring stable water flow during rotating spraying. With the device rotating 360° as a whole, a continuous water mist layer can be formed within a 10-meter radius around the pit opening and inside the pit. The dust concentration inside the pit is significantly reduced compared to the original single-side spraying method, reducing the impact of dust overflow on the surrounding environment.

[0047] Example 2: Application of a spray device with wind-adaptive wind deflector in construction scenarios during rainy season and high winds. During the rainy season at a construction site in southern China, the daily wind speed at the site was 3-4 on the Beaufort scale. The water mist sprayed from the original second atomizing nozzle (long-range spray) was easily dispersed by the wind, reducing the spray range from 10 meters to 6 meters. Dust in the distant material storage area could not be effectively controlled. Furthermore, rainwater could easily enter the fan inlet, causing the fan to become damp and affecting its operational stability. To address this, an "electrically operated adaptive wind deflector" was added to the conical outlet, and a "waterproof and dustproof filter" was installed at the fan inlet. The electric wind deflector at the cone-shaped outlet is controlled by a small wind direction sensor, which can adjust the tilt angle from 0 to 60° according to the real-time wind direction (e.g., the west side of the wind deflector is raised and the east side is lowered when there is an east wind), forming an "arc-shaped wind barrier" to reduce the wind's effect on the water mist. After optimization, the effective range of the second atomizing nozzle has been restored to the original design range, and the dust capture rate of the distant material stacking area has been significantly improved, solving the problem of spray failure caused by strong winds during the rainy season.

[0048] The waterproof and dustproof filter at the air inlet of the fan adopts a double-layer structure of "waterproof coating and high-density filter". It can not only prevent rainwater from entering the fan, but also filter construction dust, avoiding dust from adhering to the fan blades and causing a decrease in speed. After 72 hours of continuous use during the rainy season, the fan has no moisture-related failures. The failure rate of the fan is lower than that of the original device, reducing equipment maintenance downtime.

[0049] The electric wind deflector is made of lightweight alloy material, which does not increase the load on the conical cylinder and does not affect the overall rotational balance of the device; the waterproof and dustproof filter is detachable, and daily cleaning only requires removal and rinsing, making maintenance convenient and suitable for the complex environment of "high dust and rain" in construction, ensuring long-term stable operation of the device.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary spray dust suppression device for construction dust, comprising a concave base plate (1), characterized in that: The upper surface of the concave bottom plate (1) is provided with a circular groove (27). A spray dust suppression device is provided on the concave bottom plate (1). The spray dust suppression device includes a second protective cover (18). The second protective cover (18) is fixedly connected to the lower surface of the concave bottom plate (1). An L-shaped fixing rod (17) is fixedly connected to the lower surface of the second protective cover (18). An external water supply pipe connector (16) is fixedly connected to the left side of the L-shaped fixing rod (17). Among them, the upper surface of the external water pipe connector (16) is rotatably connected to a rotating pipe (9), the upper end of the rotating pipe (9) rotatably penetrates into the interior of the second protective cover (18), and rotatably penetrates out of the upper surface of the concave bottom plate (1); Among them, the outer wall of the rotating tube (9) is fixedly sleeved with a first gear (22), the bottom of the second protective cover (18) is fixedly connected with a first drive motor (23), the output end of the first drive motor (23) is fixedly connected with the same first gear (22), and the two first gears (22) mesh together. Among them, a circular plate (2) is fixedly sleeved on the outer wall of the rotating tube (9), and a circular sleeve (19) is fixedly connected to the lower surface of the circular plate (2). The lower end of the circular sleeve (19) is slidably connected to the circular groove (27). Among them, the upper surface of the circular plate (2) is fixedly connected to an L-shaped fixing plate (15).

2. The construction dust suppression rotating spray device according to claim 1, characterized in that: The L-shaped fixing plate (15) is located on the rear side of the rotating tube (9). A concave plate (12) is fixedly connected to the rear surface of the L-shaped fixing plate (15), and a first protective cover (14) is fixedly connected to the left side of the concave plate (12). Among them, the left and right inner walls of the concave plate (12) are rotatably connected to the connecting shaft (25), the opposite surfaces of the two connecting shafts (25) are fixedly connected to the connecting pipe (11), and the rear surface of the connecting pipe (11) is fixedly connected to multiple first atomizing nozzles (13). Among them, the upper surface of the connecting pipe (11) is fixedly connected to the water supply hose (10) which communicates with its interior, and the end of the water supply hose (10) away from the connecting pipe (11) is fixedly connected to the upper surface of the rotating pipe (9).

3. The construction dust suppression rotating spray device according to claim 2, characterized in that: The left end of the connecting shaft (25) located on the left side rotates and penetrates into the interior of the first protective cover (14), and the outer wall of the connecting shaft (25) located on the left side is fixedly sleeved with a second gear (26). The first protective cover (14) has a second drive motor (24) fixedly installed inside. The output end of the second drive motor (24) is fixedly connected to the same second gear (26), and the two second gears (26) mesh together.

4. The construction dust suppression rotating spray device according to claim 1, characterized in that: A rectangular extension plate (3) is fixedly connected to the front surface of the circular plate (2). Concave fixing plates (5) are fixedly connected to both the left and right sides of the rectangular extension plate (3). A conical cylinder (6) is fixedly connected to the opposite face of the two concave fixing plates (5). The inner wall of the conical cylinder (6) is fixedly connected to a circular tube (21), and the front surface of the circular tube (21) is fixedly connected to a plurality of second atomizing nozzles (20) arranged in a circular array.

5. A rotating spray dust suppression device for construction dust as described in claim 4, characterized in that: The rear surface of the circular tube (21) is fixedly connected to a water supply pipe (8) that communicates with its interior, and the rear ends of the two water supply pipes (8) both penetrate the rear surface of the conical tube (6). Both water supply pipes (8) are fixedly connected to the rotating pipe (9).

6. The construction dust suppression rotating spray device according to claim 4, characterized in that: A fan (4) is fixedly connected to the upper surface of the rectangular extension plate (3), and an air supply pipe (7) is fixedly connected to the air outlet end of the fan (4).

7. A construction dust suppression rotary spray device according to claim 6, characterized in that: The end of the air duct (7) away from the fan (4) is fixedly connected to the rear surface of the conical cylinder (6) and penetrates into the interior of the conical cylinder (6).

8. The construction dust suppression rotating spray device according to claim 1, characterized in that: Four movable wheels are fixedly connected to the lower surface of the concave base plate (1).

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