Sprinkling equipment for dust fall on construction site

Abstract

The utility model belongs to the technical field of sprinkling for dust fall on construction sites, and particularly relates to sprinkling equipment for dust fall on construction sites, which comprises a movable base, a water tank fixedly mounted at the top of the movable base, a fixed pipe fixedly mounted at the top of the water tank, a filter plate mounted in the fixed pipe in a clamping manner, and a feed hopper rotatably mounted at the top of the fixed pipe. The feed hopper is communicated with the fixed pipe and the water tank; a pull rod is rotationally mounted on one side of the movable base; the limiting assembly is located in the fixing pipe and used for limiting the feeding hopper; when the whole device is used, it is ensured that a water spraying area is located behind a worker during water spraying, sprayed water cannot fall on the body of the worker, work of the worker is prevented from being affected, and the water spraying device is convenient to use and high in practicability. And water placed in the water tank can be filtered, and impurities in the water can be effectively prevented from blocking the spray head.

Description

Technical Field

[0001] The utility model belongs to the technical field of sprinklers for dust reduction at construction sites, and in particular relates to sprinkler equipment for dust reduction at construction sites. Background Art

[0002] Sprinkling water to reduce dust is one of the most common dust reduction measures at the construction site. Sprinkling water can effectively suppress dust at the construction site and reduce the concentration of dust in the air.

[0003] For example, a Chinese patent with publication number CN215876687U discloses a dust removal device for construction sites, including a support base, a support column is arranged above the support base, a dust reduction chamber is arranged on the top of the support column, a plurality of water spray pipes are arranged on the top of the dust reduction chamber, a water injection port is arranged between the water spray pipes, a spray hole is opened on the side wall of the dust reduction chamber, two water storage chambers are arranged in the dust reduction chamber, and a baffle is arranged between the water storage chambers; the dust reduction device can be raised and lowered under the control of the support column, and moved by the moving wheels at the bottom of the support base, which is convenient for movement and can be raised and lowered and moved according to the actual use conditions, and pressure is added through the water injection port by an external pressure pump to maintain the pressure of water sprinkling, thereby improving the effect of water sprinkling and facilitating dust reduction over a larger area.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when used, such as: when a person pushes the device to spray, the water sprayed from the spray hole will drift onto the staff, affecting their work, and the water in the water pool on the construction site itself has a lot of impurities, and the water in the device is taken from the water pool on the construction site. At the same time, the device cannot filter the impurities in the water. When spraying, the impurities will stay at the spray hole, which will cause the spray hole to be blocked for a long time. In view of this, we propose a sprinkler device for dust reduction at construction sites. Utility Model Content

[0006] The utility model aims to provide a water sprinkler for dust reduction at a construction site to solve the problems raised in the above-mentioned background technology.

[0007] In view of this, the utility model provides a sprinkler device for dust reduction at a construction site, comprising:

[0008] A mobile base, a water tank is fixedly installed on the top of the mobile base, a fixed pipe is fixedly installed on the top of the water tank, a filter plate is installed in the inner clamping connection of the fixed pipe, a feed hopper is rotatably installed on the top of the fixed pipe, the feed hopper is connected with the fixed pipe and the water tank, and a pull rod is rotatably installed on one side of the mobile base;

[0009] A limiting assembly, which is located in the fixed tube and is used to limit the feed hopper;

[0010] A support column, the support column is fixedly installed on the top of the mobile base and located on one side of the water tank, a slide groove is opened in the support column, a threaded rod is rotatably installed in the slide groove, a slide plate is slidably installed in the slide groove and on the threaded rod, the slide plate is threadedly connected to the threaded rod, a water pipe is fixedly installed on one end of the slide plate, and a plurality of nozzles are fixedly installed on the rear side and left and right sides of the water pipe;

[0011] A driving assembly, the driving assembly is located in the mobile base and is used to drive the threaded rod to rotate;

[0012] A water supply assembly is located on the top of the mobile base and is used to transport water in the water tank to the water pipe.

[0013] In the present technical solution, when in use, the staff puts water from the feed hopper into the water tank. When the water enters the feed hopper, it will be filtered by the filter plate. The filter plate can filter the impurities in the water. Then, the impurities in the water will stay on the filter plate. Then, the filtered water enters the water tank through the fixed pipe. Then, the staff can drive the threaded rod to rotate through the set driving assembly according to the required spraying height. Under the action of the thread, the threaded rod will drive the slide plate to move upward in the slide groove, and the slide plate will drive the water pipe and several nozzles to move upward until the water pipe moves to a suitable position. Then, through the set water supply assembly, the water supply assembly will transport the water in the water tank to the water pipe. Under the action of water pressure, the water in the water pipe will be sprayed out from several nozzles. At the same time, the staff can hold the pull rod to pull the whole device to move. When spraying, the staff walks in front of the water pipe, and the whole device is located behind the staff, so the water sprayed by several nozzles will not fall on the staff. In addition, the water pipe has a U-shaped structure, so that the spraying range can be maximized.

[0014] When cleaning the impurities on the filter plate, the limit assembly is used to release the limit on the feed hopper. Then, the feed hopper can be pushed by hand to rotate the feed hopper on the fixed tube, so that the feed hopper rotates 90° until the filter plate in the fixed tube is completely exposed. At this time, the filter plate can be taken out and the impurities can be cleaned. Then, the limit assembly is used to limit the feed hopper.

[0015] In the above technical solution, further, the limit assembly includes:

[0016] A limit groove is provided in the fixed tube, a limit block is slidably installed in the limit groove, the upper end of the limit block passes through the top of the limit groove and extends into the feed hopper, the other end of the limit block passes through one end of the limit groove and extends to the outside, and a spring fixed to the bottom of the limit groove is fixedly installed at the bottom of the limit block.

[0017] In the present technical solution, when cleaning the impurities on the filter plate, the staff pushes the limit block downward so that the upper end of the limit block is completely pulled out of the feed hopper and enters the limit groove. During the downward displacement of the limit block, the spring will be squeezed and will shrink until the limit block completely enters the limit groove. Then, the feed hopper can be pushed by hand to rotate the feed hopper on the fixed tube so that the feed hopper rotates 90° until the filter plate in the fixed tube is completely exposed. At this time, the filter plate can be taken out and the impurities can be cleaned. Then, the filter plate can be placed in the fixed tube. Then, the feed hopper is restored to its original position. Under the action of the spring rebound force, the spring will push the limit block and move upward until the upper end of the limit block is inserted into the feed hopper, thereby limiting the feed hopper.

[0018] In the above technical solution, further, the upper end of the limit block is plug-fitted with the feed hopper.

[0019] In this technical solution, it is ensured that the upper end of the limit block can be inserted into the feed hopper.

[0020] In the above technical solution, further, the driving component includes:

[0021] A power chamber, which is opened in the mobile base and is located below the support column. A worm is rotatably installed in the power chamber, one end of the worm passes through one side of the power chamber and extends to the outside. A worm wheel is rotatably installed in the power chamber and located on one side of the worm. The worm wheel meshes with the worm and is located directly below the threaded rod. The top end of the worm wheel passes through the top of the power chamber and the bottom of the support column and extends into the slide groove, and the top end of the worm wheel is coaxially connected to the threaded rod.

[0022] In this technical solution, the rocker on the worm is turned by hand to drive the worm to rotate. Under the action of meshing, the worm will drive the worm wheel to rotate, and then the worm wheel will drive the threaded rod to rotate. Under the action of the thread, the threaded rod will drive the slide plate to move upward in the slide groove, and the slide plate will then drive the water pipe and several nozzles to move upward until the water pipe is moved to a suitable position.

[0023] In the above technical solution, further, the water supply component includes:

[0024] A water pump is fixedly installed on the top of the mobile base and is located between the support column and the water tank. The water inlet end of the water pump is fixed and connected to the water tank, and the water outlet end of the water pump is fixedly installed with a hose that is fixed and connected to the water pipe.

[0025] In this technical solution, the water pump is started to draw water from the water tank. Subsequently, the water drawn by the water pump enters the water pipe through the hose. Under the action of the water pressure, the water in the water pipe is sprayed out from a number of nozzles.

[0026] In the above technical solution, further, the nozzle is connected to a water pipe, and the water pipe is in a "U"-shaped structure.

[0027] In this technical solution, it is ensured that the water in the water pipe can be sprayed out from the nozzle; the water pipe is in a U-shaped structure, so that the spraying range can be maximized.

[0028] In the above technical solution, further, the cross-sectional dimension of the filter plate is larger than the cross-sectional dimension of the bottom of the inner cavity of the feed hopper, the inner cavity of the feed hopper is an inverted trapezoidal structure, the filtering accuracy of the filter plate is 1μm-50μm, and the top of the filter plate is lower than the top of the fixed tube.

[0029] In this technical solution, it is ensured that the water entering the feed hopper can be filtered by the filter plate, so that impurities in the water remain on the filter plate; it is ensured that a certain amount of impurities can be stored on the filter plate to prevent the feed hopper from scraping off the impurities on the filter plate when rotating.

[0030] In the above technical solution, further, the upper end of the worm gear is rotatably connected to the support column and the slide groove.

[0031] In this technical solution, it is ensured that the upper end of the worm gear can rotate in the support column and the slide groove.

[0032] The beneficial effects of the utility model are:

[0033] 1. The sprinkler equipment for dust reduction at the construction site ensures that when spraying water, the spraying area is located behind the personnel through the cooperation between the mobile base, water tank, pull rod, water pipe, support column, slide plate, nozzle, drive assembly and water supply assembly, and the sprayed water will not fall on the staff to avoid affecting the work of the staff.

[0034] 2. The sprinkler equipment for dust reduction at construction sites can ensure that the water placed in the water tank can be filtered through the cooperation between the feed hopper, fixed pipe, filter plate and limit components, and can effectively prevent impurities in the water from clogging the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is one of the overall structural diagrams of the utility model;

[0036] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0037] Figure 3 This is a schematic diagram of the internal structure of the mobile base in the utility model;

[0038] Figure 4 For this utility model Figure 3 The enlarged structure at A in the middle is shown;

[0039] Figure 5 This is a schematic diagram of the internal structure of the fixed tube in the utility model;

[0040] Figure 6 For this utility model Figure 5 The enlarged structural diagram at B in the middle;

[0041] Figure 7 This is a schematic diagram of the structure of the fixed tube and the filter plate in the utility model;

[0042] Figure 8 It is a schematic diagram of the structure of the storage battery in the mobile base of the utility model.

[0043] The symbols in the figure are:

[0044] 1. Mobile base; 2. Water tank; 3. Pull rod; 4. Fixed pipe; 5. Feed hopper; 6. Water pipe; 7. Support column; 8. Slide plate; 9. Nozzle; 10. Worm; 11. Hose; 12. Threaded rod; 13. Slide; 14. Spring; 15. Water pump; 16. Power chamber; 17. Worm gear; 18. Filter plate; 19. Limit block; 20. Limit groove. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-Figure 8 This application is described in further detail.

[0046] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0047] Embodiment 1:

[0048] This embodiment provides a sprinkler device for dust reduction at a construction site, comprising:

[0049] A mobile base 1, a water tank 2 is fixedly installed on the top of the mobile base 1, a fixed pipe 4 is fixedly installed on the top of the water tank 2, a filter plate 18 is installed in the fixed pipe 4, a feed hopper 5 is rotatably installed on the top of the fixed pipe 4, the feed hopper 5 is connected with the fixed pipe 4 and the water tank 2, and a pull rod 3 is rotatably installed on one side of the mobile base 1;

[0050] A limiting component, which is located in the fixed tube 4 and is used to limit the feed hopper 5;

[0051] A support column 7 is fixedly mounted on the top of the mobile base 1 and located on one side of the water tank 2. A slide groove 13 is provided in the support column 7. A threaded rod 12 is rotatably mounted in the slide groove 13. A slide plate 8 is slidably mounted in the slide groove 13 and on the threaded rod 12. The slide plate 8 is threadedly connected to the threaded rod 12. A water pipe 6 is fixedly mounted on one end of the slide plate 8. A plurality of nozzles 9 are fixedly mounted on the rear side and the left and right sides of the water pipe 6.

[0052] A driving assembly, which is located in the mobile base 1 and is used to drive the threaded rod 12 to rotate;

[0053] The water supply assembly is located on the top of the mobile base 1 and is used to transport the water in the water tank 2 to the water pipe 6 .

[0054] When in use, the staff puts water from the feed hopper 5 into the water tank 2. When the water enters the feed hopper 5, it will be filtered by the filter plate 18. The filter plate 18 can filter impurities in the water. Then, the impurities in the water will stay on the filter plate 18. Then, the filtered water passes through the fixed pipe 4 and enters the water tank 2. Then, the staff can drive the threaded rod 12 to rotate through the set drive assembly according to the required spraying height. Under the action of the thread, the threaded rod 12 will drive the slide plate 8 to move upward in the slide groove 13, and the slide plate 8 will drive The water pipe 6 and the plurality of nozzles 9 are displaced upward until the water pipe 6 is displaced to a suitable position. Then, the water supply assembly is used to transport the water in the water tank 2 to the water pipe 6. Under the action of the water pressure, the water in the water pipe 6 is sprayed out from the plurality of nozzles 9. At the same time, the staff can hold the pull rod 3 to pull the entire device to move. When spraying, the staff walks in front of the water pipe 6, and the entire device is located behind the staff, so the water sprayed from the plurality of nozzles 9 will not fall on the staff. In addition, the water pipe 6 is in a U-shaped structure, so that the spraying range can be maximized.

[0055] When cleaning the impurities on the filter plate 18, the limit assembly is set to release the limit on the feed hopper 5. Then, the feed hopper 5 can be pushed by hand to rotate the feed hopper 5 on the fixed tube 4, so that the feed hopper 5 rotates 90° until the filter plate 18 in the fixed tube 4 is completely exposed. At this time, the filter plate 18 can be taken out and the impurities can be cleaned. Then, the limit assembly is set to limit the feed hopper 5.

[0056] Embodiment 2:

[0057] This embodiment provides a sprinkler device for dust reduction at a construction site. In addition to the technical solutions of the above embodiments, it also has the following technical features. The limit assembly includes:

[0058] The limit groove 20 is opened in the fixed tube 4, and a limit block 19 is slidably installed in the limit groove 20. The upper end of the limit block 19 passes through the top of the limit groove 20 and extends into the feed hopper 5. The other end of the limit block 19 passes through one end of the limit groove 20 and extends to the outside. The bottom of the limit block 19 is fixedly installed with a spring 14 fixed to the bottom of the limit groove 20.

[0059] Among them, when cleaning the impurities on the filter plate 18, the staff pushes the limit block 19 downward so that the upper end of the limit block 19 is completely pulled out of the feed hopper 5 and enters the limit groove 20. During the downward displacement of the limit block 19, the spring 14 is squeezed and will shrink until the limit block 19 completely enters the limit groove 20. Then, the feed hopper 5 can be pushed by hand to rotate the feed hopper 5 on the fixed tube 4, so that the feed hopper 5 rotates 90° until the filter plate 18 in the fixed tube 4 is completely exposed. At this time, the filter plate 18 can be taken out and the impurities can be cleaned. Then, the filter plate 18 is placed in the fixed tube 4. Then, the feed hopper 5 is restored to its original position. Under the action of the rebound force of the spring 14, the spring 14 will push the limit block 19 to move upward until the upper end of the limit block 19 is inserted into the feed hopper 5, so that the feed hopper 5 can be limited.

[0060] Embodiment 3:

[0061] This embodiment provides a sprinkler device for dust reduction at a construction site. In addition to the technical solutions of the above embodiments, it also has the following technical features: the upper end of the limit block 19 is plugged into and matched with the feed hopper 5.

[0062] Here, it is ensured that the upper end of the limiting block 19 can be inserted into the feed hopper 5 .

[0063] Embodiment 4:

[0064] This embodiment provides a sprinkler device for dust reduction at a construction site. In addition to the technical solutions of the above embodiments, it also has the following technical features. The driving component includes:

[0065] A power chamber 16 is provided in the mobile base 1 and is located below the support column 7. A worm 10 is rotatably installed in the power chamber 16. One end of the worm 10 passes through one side of the power chamber 16 and extends to the outside. A worm wheel 17 is rotatably installed in the power chamber 16 and located on one side of the worm 10. The worm wheel 17 is meshed with the worm 10, and the worm wheel 17 is located directly below the threaded rod 12. The top end of the worm wheel 17 passes through the top of the power chamber 16 and the bottom of the support column 7 and extends into the slide groove 13. The top end of the worm wheel 17 is coaxially connected to the threaded rod 12.

[0066] Among them, the rocker on the worm 10 is turned by hand to drive the worm 10 to rotate. Under the action of meshing, the worm 10 will drive the worm wheel 17 to rotate, and then the worm wheel 17 will drive the threaded rod 12 to rotate. Under the action of the thread, the threaded rod 12 will drive the slide plate 8 to move upward in the slide groove 13, and the slide plate 8 will then drive the water pipe 6 and several nozzles 9 to move upward until the water pipe 6 moves to a suitable position.

[0067] Embodiment 5:

[0068] This embodiment provides a sprinkler device for dust reduction at a construction site. In addition to the technical solutions of the above embodiments, it also has the following technical features. The water supply component includes:

[0069] The water pump 15 is fixedly installed on the top of the mobile base 1 and is located between the support column 7 and the water tank 2. The water inlet end of the water pump 15 is fixed and connected to the water tank 2. The water outlet end of the water pump 15 is fixedly installed with a hose 11 fixed and connected to the water pipe 6.

[0070] The water pump 15 is started to extract water from the water tank 2 , and then the water extracted by the water pump 15 enters the water pipe 6 through the hose 11 . Under the action of water pressure, the water in the water pipe 6 is sprayed out from the plurality of nozzles 9 .

[0071] Embodiment 6:

[0072] This embodiment provides a sprinkler device for dust reduction at a construction site. In addition to the technical solutions of the above embodiments, it also has the following technical features: the nozzle 9 is connected to the water pipe 6, and the water pipe 6 is in a "U" shape.

[0073] The water in the water pipe 6 is ensured to be sprayed out from the spray head 9; the water pipe 6 is in a U-shaped structure, so that the spraying range can be maximized.

[0074] Embodiment 7:

[0075] The present embodiment provides a sprinkler device for dust reduction at construction sites. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features: the cross-sectional size of the filter plate 18 is larger than the cross-sectional size of the bottom of the inner cavity of the feed hopper 5, the inner cavity of the feed hopper 5 is an inverted trapezoidal structure, the filtering progress of the filter plate 18 is 1μm-50μm, and the top of the filter plate 18 is lower than the top of the fixed pipe 4.

[0076] Among them, it is ensured that the water entering the feed hopper 5 can be filtered by the filter plate 18, so that the impurities in the water remain on the filter plate 18; it is ensured that a certain amount of impurities can be stored on the filter plate 18 to prevent the feed hopper 5 from scraping off the impurities on the filter plate 18 when rotating.

[0077] Embodiment 8:

[0078] This embodiment provides a sprinkler device for dust reduction at a construction site. In addition to the technical solutions of the above embodiments, it also has the following technical features: the upper end of the worm gear 17 is rotatably connected to the support column 7 and the slide groove 13.

[0079] The upper end of the worm gear 17 is ensured to be able to rotate in the support column 7 and the slide groove 13 .

[0080] It is worth noting that the hose 11 has a sufficient length and will not become tight or folded when the water pipe 6 moves up and down, and will not hinder the displacement of the water pipe 6.

[0081] It is worth noting that a battery is provided in the mobile base 1 , and the battery is electrically connected to the water pump 15 to ensure that electricity can be provided to the water pump 15 .

[0082] Working principle: When in use, the staff puts water from the feed hopper 5 into the water tank 2. When the water enters the feed hopper 5, it will be filtered by the filter plate 18. The filter plate 18 can filter the impurities in the water. Then, the impurities in the water will stay on the filter plate 18. Then, the filtered water passes through the fixed pipe 4 and enters the water tank 2. Then, the staff can turn the rocker on the worm 10 by hand according to the required spraying height and drive the worm 10 to rotate. Under the action of meshing, the worm 10 will drive the worm wheel 17 to rotate, and then the worm wheel 17 will drive the threaded rod 12 to rotate. Under the action of the thread, the threaded rod 12 will drive the slide plate 8 in the slide groove 1 3 moves upward, the slide plate 8 drives the water pipe 6 and the plurality of nozzles 9 to move upward until the water pipe 6 moves to a suitable position, then the water pump 15 is started to extract the water in the water tank 2, then the water extracted by the water pump 15 enters the water pipe 6 through the hose 11, and under the action of the water pressure, the water in the water pipe 6 is sprayed out from the plurality of nozzles 9, at the same time, the staff can hold the pull rod 3 to pull the whole device to move, when spraying, the staff walks in front of the water pipe 6, and the whole device is located behind the staff, so the water sprayed by the plurality of nozzles 9 will not fall on the staff, and the water pipe 6 is in a U-shaped structure, so that the spraying range can be maximized;

[0083] When cleaning the impurities on the filter plate 18, the staff pushes the limit block 19 downward so that the upper end of the limit block 19 is completely pulled out of the feed hopper 5 and enters the limit groove 20. During the downward displacement of the limit block 19, the spring 14 is squeezed and will shrink until the limit block 19 completely enters the limit groove 20. Then, the feed hopper 5 can be pushed by hand to rotate the feed hopper 5 on the fixed tube 4, so that the feed hopper 5 rotates 90° until the filter plate 18 in the fixed tube 4 is completely exposed. At this time, the filter plate 18 can be taken out and the impurities can be cleaned. Then, the filter plate 18 is placed in the fixed tube 4. Then, the feed hopper 5 is restored to its original position. Under the action of the rebound force of the spring 14, the spring 14 will push the limit block 19 to move upward until the upper end of the limit block 19 is inserted into the feed hopper 5, so that the feed hopper 5 can be limited.

[0084] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A sprinkler device for dust reduction at a construction site, characterized in that: include: A mobile base (1), a water tank (2) is fixedly mounted on the top of the mobile base (1), a fixed pipe (4) is fixedly mounted on the top of the water tank (2), a filter plate (18) is mounted in a clamping connection inside the fixed pipe (4), a feed hopper (5) is rotatably mounted on the top of the fixed pipe (4), the feed hopper (5) is connected to the fixed pipe (4) and the water tank (2), and a pull rod (3) is rotatably mounted on one side of the mobile base (1); A limiting assembly, the limiting assembly being located in the fixed tube (4) and being used to limit the position of the feed hopper (5); A support column (7), the support column (7) is fixedly mounted on the top of the mobile base (1) and located on one side of the water tank (2), a slide groove (13) is provided in the support column (7), a threaded rod (12) is rotatably mounted in the slide groove (13), a slide plate (8) is slidably mounted in the slide groove (13) and located on the threaded rod (12), the slide plate (8) is threadedly connected to the threaded rod (12), a water pipe (6) is fixedly mounted on one end of the slide plate (8), and a plurality of nozzles (9) are fixedly mounted on the rear side and left and right sides of the water pipe (6); A driving assembly, the driving assembly being located in the mobile base (1) and being used for driving the threaded rod (12) to rotate; A water supply component is located on the top of the mobile base (1) and is used to transport water in the water tank (2) to the water pipe (6).

2. A sprinkler device for dust reduction at a construction site according to claim 1, characterized in that: The limiting component comprises: A limit groove (20), wherein the limit groove (20) is provided in the fixed tube (4), a limit block (19) is slidably installed in the limit groove (20), the upper end of the limit block (19) passes through the top of the limit groove (20) and extends into the feed hopper (5), the other end of the limit block (19) passes through one end of the limit groove (20) and extends to the outside, and a spring (14) fixed to the bottom of the limit groove (20) is fixedly installed at the bottom of the limit block (19).

3. A sprinkler device for dust reduction at a construction site according to claim 2, characterized in that: The upper end of the limit block (19) is plug-fitted into the feed hopper (5).

4. A sprinkler device for dust reduction at a construction site according to claim 1, characterized in that: The drive assembly comprises: A power chamber (16), wherein the power chamber (16) is opened in the mobile base (1) and is located below the support column (7), a worm (10) is rotatably installed in the power chamber (16), one end of the worm (10) passes through one side of the power chamber (16) and extends to the outside, a worm wheel (17) is rotatably installed in the power chamber (16) and located on one side of the worm (10), the worm wheel (17) is meshed with the worm (10), and the worm wheel (17) is located directly below the threaded rod (12), the top end of the worm wheel (17) passes through the top of the power chamber (16) and the bottom of the support column (7) and extends into the slide groove (13), and the top end of the worm wheel (17) is coaxially connected to the threaded rod (12).

5. The sprinkler equipment for dust reduction at a construction site according to claim 1, characterized in that: The water supply assembly comprises: A water pump (15), the water pump (15) is fixedly mounted on the top of the mobile base (1) and is located between the support column (7) and the water tank (2), the water inlet end of the water pump (15) is fixed to and connected with the water tank (2), and the water outlet end of the water pump (15) is fixedly mounted with a hose (11) that is fixed to and connected with the water pipe (6).

6. The sprinkler equipment for dust reduction at a construction site according to claim 1, characterized in that: The nozzle (9) is connected to the water pipe (6), and the water pipe (6) is in a "U"-shaped structure.

7. The sprinkler equipment for dust reduction at a construction site according to claim 1, characterized in that: The cross-sectional dimensions of the filter plate (18) are larger than the cross-sectional dimensions of the bottom of the inner cavity of the feed hopper (5); the inner cavity of the feed hopper (5) is in an inverted trapezoidal structure; the filtering accuracy of the filter plate (18) is 1 μm-50 μm; and the top of the filter plate (18) is lower than the top of the fixed tube (4).

8. The sprinkler equipment for dust reduction at a construction site according to claim 4, characterized in that: The upper end of the worm wheel (17) is rotatably connected to the support column (7) and the slide groove (13).

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