A dust fall device for purifying the air environment of a construction site

Abstract

The application belongs to the technical field of construction site dust falling, and particularly relates to a dust falling device for purifying air environment of a construction site. The dust falling device for purifying air environment of a construction site comprises a guardrail, a wind power conversion mechanism, a filtering mechanism and a impurity removal mechanism, and a plurality of water pipes are fixed on one side of the guardrail. When strong wind weather occurs, the connecting pipe is converted to supply water to the second spray head, the water spraying range of the second spray head is larger than that of the first spray head, and then dust falling operation is performed by spraying water through the second spray head, so as to reduce the influence of strong wind on dust falling operation. When the fan blade rotates due to wind, the impurities adhered to the surface of the circular ring pipe are cleaned by the cleaning bullet. When the fixed column moves away from the circular table pipe due to wind, the impurities adhered to the surface of the circular ring pipe are scraped off by the rubber ring pad, so that the impurities are sprayed out of the second spray head. Before the water enters the circular table pipe through the connecting pipe, the impurities in the water are filtered by the filter plate, so as to ensure normal operation of the first spray head and the second spray head.

Description

Technical Field

[0001] This invention belongs to the field of dust collection technology at construction sites, specifically relating to a dust collection device for purifying the air environment at construction sites. Background Technology

[0002] Construction is a production activity in which people use various building materials and machinery to construct various building products within a specific space and time according to a specific design blueprint. During the construction process, due to the large number of mechanical equipment, the mixing and vibration of various equipment will result in a large amount of dust in the air at the construction site. This dust can easily be released into the air, and if it is not removed in time, it will cause great harm to the health of construction workers and cause serious air pollution to the construction site and the surrounding environment. Therefore, dust collection equipment is often used in construction.

[0003] Currently, in construction, the main approach to addressing this issue is to use water spraying devices to spray areas with high dust levels. Additionally, while constructing protective structures such as walls and fences at the construction site, several water mist spray nozzles are evenly distributed around the construction site on top of these structures. This spraying method effectively purifies the dust generated during construction, reducing dust pollution. This is a more feasible solution compared to large-scale equipment like water spraying devices.

[0004] However, construction sites often construct protective devices such as walls and fences, and install dust collection equipment on them. In actual use, in order to achieve the desired water mist spraying effect, the spray nozzles are generally set with a large mesh size. However, the cleanliness of the water used on construction sites is often poor, which can easily cause the water mist spray nozzles to become clogged, reducing the effectiveness of the spray purification of dust. At the same time, when there is strong wind at the construction site, the spraying range of the water mist spray nozzles will be affected by the wind and reduced, causing gaps in the spray purification or resulting in poor dust control.

[0005] For example, Chinese patent CN209067024U discloses a dust suppression enclosure for construction sites, consisting of a main enclosure body, partitions, air inlets, water pipes, water baffles, a vacuum pump, a buffer chamber, an air inlet pipe, water spray holes, and a cover plate. The main enclosure body has a built-in buffer chamber, and the partitions are placed inside the buffer chamber. In use, gas enters the vacuum pump through the air inlet pipe, and then flows into the water pipe through the air outlet pipe on the vacuum pump, pressurizing the water in the water pipe and causing it to be sprayed out through multiple water spray holes to suppress dust. However, it does not filter impurities in the water, and in windy weather, the nozzles cannot be adjusted to expand the spray range. Another example is Chinese patent CN215595201U, which discloses a dust suppression enclosure for construction sites. It uses the rotation of the baffle blades to create gaps, thereby effectively reducing wind resistance and the probability of the enclosure being blown down by strong winds, causing safety hazards. However, it does not address the impact of impurities in the water or how to deal with strong winds.

[0006] The dust suppression mechanisms mentioned above are often designed in a similar way. In fact, daily water is usually hard water, and the water used on construction sites has a higher impurity content. It is not suitable to add large water purification equipment to the fencing, so this is one of the problems with the materials used for dust suppression fencing. Secondly, in windy conditions, conventional spraying technology is greatly affected by the wind and it is difficult to guarantee the dust removal effect. Summary of the Invention

[0007] The purpose of this invention is to provide a dust collection device for purifying the air environment of construction sites. It can reduce impurities in water without adding other purification equipment, avoid clogging of water mist spray nozzles, and ensure the effectiveness of spray purification of dust. At the same time, it can automatically increase the spraying range when there is windy weather at the construction site, thereby improving the dust treatment effect. No additional control program is required, making management more convenient.

[0008] The specific technical solution adopted by this invention is as follows:

[0009] A dust collection device for purifying the air environment at construction sites, comprising:

[0010] The guardrail has multiple water pipes fixed on one side. An upper U-shaped pipe is fixed to the upper end of each water pipe. A lower U-shaped pipe is fixed to the end of the upper U-shaped pipe away from the water pipe. A connecting pipe is fixed to the end of the lower U-shaped pipe away from the upper U-shaped pipe. A frustum-shaped pipe is fixed to the end of the connecting pipe away from the lower U-shaped pipe. Multiple first nozzles are installed inside the frustum-shaped pipe. Multiple second nozzles are installed on one side of the frustum-shaped pipe.

[0011] A wind power conversion mechanism is installed inside the frustum tube and is movably connected to the connecting pipe. One end of the wind power conversion mechanism is located outside the frustum tube. The wind power conversion mechanism is used to use wind power to make the second nozzle replace the first nozzle for operation.

[0012] A filtration mechanism is disposed inside the connecting pipe and is used to filter impurities in the liquid.

[0013] Impurity removal mechanism, which is located at the lower end of the lower U-shaped tube, is used to remove impurities filtered by the filtration mechanism.

[0014] In a preferred embodiment, the wind power conversion mechanism includes a connecting rod, a fixed pipe, a fixed column, a first spring, a fan blade, a fixed block, and a liquid supply module. The connecting rod is movably connected to the upper end inside the connecting pipe. The fixed pipe is fixed to the upper end inside the connecting pipe and located outside the connecting rod. The fixed column is movably connected to the inside of the fixed pipe. The first spring is disposed outside the connecting rod and located between the connecting pipe and the fixed column. The fan blade is fixed to the end of the connecting rod away from the frustum tube. The fixed block is fixed to the end of the connecting rod near the frustum tube. A plurality of second nozzles are fixed to the side of the fixed block away from the frustum tube. The liquid supply module is disposed inside the frustum tube, the connecting rod, the fixed column, and the fixed block. The liquid supply module is used to switch between the first nozzle and the second nozzle for liquid supply.

[0015] In a preferred embodiment, a limit ring is rotatably connected to the outer side of the connecting rod and near the frustum tube.

[0016] In a preferred embodiment, a fixing rod is slidably connected inside the fixing block. A first cleaning brush is fixed to one end of the fixing rod, and a stop block is fixed to the end of the fixing rod away from the first cleaning brush. A second spring is provided on the outside of the fixing rod, and the second spring is located between the stop block and the fixing block.

[0017] In a preferred embodiment, in the initial state, the first cleaning brush is located inside the fixed block, and when the fan blades are rotated by wind, the first cleaning brush extends out from inside the fixed block and contacts the surface of the first nozzle.

[0018] In a preferred embodiment, the liquid supply module includes a first annular groove, a second annular groove, a through hole, multiple pipes, and a circular annular tube. The first annular groove is formed on the surface of the fixed column and near the side of the fixed pipe. The second annular groove is formed on the surface of the fixed column and away from the side of the fixed pipe. The through hole is formed inside the connecting rod and the fixing block and communicates with multiple second nozzles. The multiple pipes are all fixed inside the truncated cone tube and communicate with multiple first nozzles respectively. The circular annular tube is fixed at the end of the multiple pipes away from the first nozzles and communicates with the circular annular tube.

[0019] In a preferred embodiment, in the initial state, the first annular groove is connected to the pipe and the connecting pipe. When the fixed block is moved by the wind and approaches the frustum tube, the fixed column moves into the interior of the fixed tube, the pipe is closed by the fixed column, and the second annular groove is connected to the connecting pipe.

[0020] In a preferred embodiment, a cleaning spring (26) is fixed on the outer side of the first annular groove and near the second annular groove.

[0021] In a preferred embodiment, the cleaning spring contacts the annular tube, and when the fixed column rotates, the cleaning spring moves in a circular motion along the annular tube.

[0022] In a preferred embodiment, a rubber ring gasket is provided on the outer side of the fixing post and on the portion located between the first annular groove and the second annular groove.

[0023] The technical effects achieved by this invention are as follows:

[0024] In windy weather, especially when the wind is blowing against the wind, the fixed block will move towards the frustum tube, interrupting the water supply from the connecting pipe to the first nozzle. Instead, the water supply will switch to the second nozzle, which sprays water over a larger area than the first nozzle. This allows for dust removal operations to be carried out by spraying water from the second nozzle, providing a larger spraying area and reducing the impact of strong winds on dust removal operations. In normal weather or when the wind is blowing down, the effect of the spraying is not significant, so the first nozzle is always kept in operation, reducing water waste.

[0025] In the normal, non-wind-facing state, when the wind causes the fan blades to rotate, the cleaning spring will rotate accordingly to clean the impurities adhering to the surface of the annular tube, thus ensuring that water enters the pipe from the annular tube and playing a certain role in preventing blockage. In the wind-facing state, during the nozzle switching process, the rubber ring pad will move accordingly, scraping off the fine impurities adhering to the surface of the filter screen of the annular tube during the movement, and allowing the fine impurities to mix with water and be sprayed out from the second nozzle, thereby ensuring the effect of the first nozzle continuing to spray water.

[0026] In this invention, before water enters the frustum tube through the connecting pipe, impurities in the water are filtered by a filter plate. A rotating second cleaning brush treats the impurities attached to the surface of the filter plate to prevent clogging. The filtered impurities are discharged through a waste removal mechanism to ensure the filtration performance of the filter plate, the flow of water, and the normal operation of the first and second nozzles. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention installed on the guardrail;

[0028] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 3 This is a cross-sectional view of the present invention;

[0030] Figure 4 This is a schematic diagram of the wind power conversion mechanism of the present invention;

[0031] Figure 5 This is a cross-sectional view of the connecting pipe, the frustum tube, and the wind power conversion mechanism of the present invention;

[0032] Figure 6 This is a schematic diagram of the structure of the fixed column that converts the operation of the first and second nozzles according to the present invention;

[0033] Figure 7 This is a schematic diagram of the connection between the pipe and the annular pipe of the present invention;

[0034] Figure 8 This is the present invention. Figure 6 Enlarged view of point C in the middle;

[0035] Figure 9 This is the present invention. Figure 3 Enlarged view of point A in the middle;

[0036] Figure 10 This is the present invention. Figure 3 Enlarged view of point B in the middle;

[0037] Figure 11 This is an exploded view of the filtering mechanism of the present invention;

[0038] Figure 12 This is an exploded view of the impurity removal mechanism of the present invention;

[0039] Figure 13 This is a cross-sectional view of the impurity removal mechanism of the present invention.

[0040] The attached diagram lists the components represented by each number as follows:

[0041] 1. Guardrail; 2. Water pipe; 3. Upper U-shaped pipe; 4. Lower U-shaped pipe; 5. Connecting pipe; 6. Frustum tube; 7. First nozzle; 8. Second nozzle; 11. Connecting rod; 12. Fixing pipe; 13. Fixing post; 14. First spring; 15. Fan blade; 16. Fixing block; 17. Limiting ring; 21. First annular groove; 22. Second annular groove; 23. Through hole; 24. Pipe; 25. Circular tube; 26. Cleaning spring; 31. First cleaning brush; 32. Fixing rod; 33. Stop block; 34. Second spring; 41. Filter plate; 42. Impeller; 43. Second cleaning brush; 44. Baffle; 51. Waste storage pipe; 52. Sealing cover; 53. Third cleaning brush; 54. Rectangular rod; 55. Sealing block; 56. Rotary handle; 57. Third spring. Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment optionally mutually exclusive with other embodiments.

[0045] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0046] Example 1

[0047] Please see the appendix Figures 1 to 3As shown, this is the first embodiment of the present invention. This embodiment provides a dust collection device for purifying the air environment of a construction site, including a guardrail 1 and a wind power conversion mechanism. Multiple water pipes 2 are fixed to one side of the guardrail 1. An upper U-shaped pipe 3 is fixed to the upper end of the water pipes 2. A lower U-shaped pipe 4 is fixed to the end of the upper U-shaped pipe 3 away from the water pipes 2. A connecting pipe 5 is fixed to the end of the lower U-shaped pipe 4 away from the upper U-shaped pipe 3. A frustum-shaped pipe 6 is fixed to the end of the connecting pipe 5 away from the lower U-shaped pipe 4. Multiple first nozzles 7 are arranged inside the frustum-shaped pipe 6. Multiple second nozzles 8 are arranged on one side of the frustum-shaped pipe 6. The wind power conversion mechanism is arranged inside the frustum-shaped pipe 6 and is movably connected to the connecting pipe 5. One end of the wind power conversion mechanism is located outside the frustum-shaped pipe 6. The wind power conversion mechanism is used to use wind power to make the second nozzles 8 replace the first nozzles 7 for operation.

[0048] Specifically, in windy weather, when the wind blows from the upper U-shaped pipe 3 to the lower U-shaped pipe 4, the wind moves in the same direction as the spray of the first nozzle 7 and will not affect the dust suppression operation. When the wind blows from the lower U-shaped pipe 4 to the upper U-shaped pipe 3, the wind moves against the spray direction of the first nozzle 7. When the wind drives the wind power conversion mechanism to operate, the first nozzle 7 stops spraying and the second nozzle 8 starts spraying, reducing the impact of the wind on the spray range and ensuring the effectiveness of the dust suppression operation.

[0049] It should be noted that the spray distance of the second nozzle 8 is greater than that of the first nozzle 7, in order to ensure the range of spray purification and reduce the impact of strong winds on dust collection operations.

[0050] In a preferred embodiment, please refer to Figure 4 and Figure 5 The wind power conversion mechanism includes a connecting rod 11, a fixed pipe 12, a fixed column 13, a first spring 14, a fan blade 15, a fixed block 16, and a liquid supply module. The connecting rod 11 is movably connected to the upper end inside the connecting pipe 5. The fixed pipe 12 is fixed to the upper end inside the connecting pipe 5 and located outside the connecting rod 11. The fixed column 13 is movably connected to the inside of the fixed pipe 12. The first spring 14 is located outside the connecting rod 11 and between the connecting pipe 5 and the fixed column 13. The fan blade 15 is fixed to the end of the connecting rod 11 away from the frustum tube 6. The fixed block 16 is fixed to the end of the connecting rod 11 close to the frustum tube 6. Multiple second nozzles 8 are fixed to the side of the fixed block 16 away from the frustum tube 6. The liquid supply module is located inside the frustum tube 6, the connecting rod 11, the fixed column 13, and the fixed block 16. The liquid supply module is used to switch between the first nozzle 7 and the second nozzle 8 for liquid supply.

[0051] In this embodiment, when the wind blows from the lower U-shaped tube 4 to the upper U-shaped tube 3, the wind moves against the spray direction of the first nozzle 7. The wind pushes the fixing block 16 closer to the frustum tube 6, pushes the fan blade 15 away from the connecting tube 5, and makes the fan blade 15 rotate. The fixing column 13 moves into the interior of the fixing tube 12, so that the first spring 14 is compressed. When the fixing column 13 moves, the liquid supply module cancels the liquid supply to the first nozzle 7, and the second nozzle 8 supplies liquid, so that the spraying operation is switched to the second nozzle 8. When there is no wind, the elastic force of the first spring 14 pushes the fixing column 13 to move, so that the fixing column 13 returns to its original state, and the first nozzle 7 is switched to spraying operation through the liquid supply module.

[0052] Furthermore, a limiting ring 17 is rotatably connected to the outer side of the connecting rod 11 and near the frustum tube 6. When the wind blows from the upper U-shaped tube 3 to the lower U-shaped tube 4, the wind moves in the direction of the spray from the first nozzle 7 and will not affect the dust removal operation. When the wind causes the fan blade 15 to rotate, the limiting ring 17 can limit the position of the fixing post 13 to prevent the fixing post 13 from separating from the fixing tube 12. At the same time, the rotating limiting ring 17 can reduce the friction between the limiting ring 17 and the frustum tube 6, ensuring the normal movement of the fan blade 15.

[0053] Secondly, please refer to Figure 9 A fixing rod 32 is slidably connected inside the fixing block 16. A first cleaning brush 31 is fixed to one end of the fixing rod 32, and a stop block 33 is fixed to the other end of the fixing rod 32 away from the first cleaning brush 31. A second spring 34 is provided on the outside of the fixing rod 32, and the second spring 34 is located between the stop block 33 and the fixing block 16.

[0054] It should be noted that in the initial state, the first cleaning brush 31 is located inside the fixed block 16. When the fan blade 15 is rotated by the wind, it drives the fixed block 16 to rotate and generate centrifugal force. The centrifugal force causes the first cleaning brush 31 to extend out from inside the fixed block 16 and the extended first cleaning brush 31 contacts the surface of the first nozzle 7.

[0055] As described above, when the wind blows from the lower U-shaped tube 4 to the upper U-shaped tube 3, the wind moves against the spray direction of the first nozzle 7. The wind pushes the fixing block 16 closer to the frustum tube 6, and the wind pushes the fan blade 15 away from the connecting tube 5. When the fan blade 15 rotates, it drives the fixing block 16 to rotate and generates centrifugal force, causing the first cleaning brush 31 to extend from the inside of the fixing block 16 and compress the second spring 34. The extended first cleaning brush 31 cleans the surface of the first nozzle 7, preventing dust and impurities carried by the wind from clogging the first nozzle 7 and ensuring the normal spraying operation of the first nozzle 7 after the wind stops.

[0056] Secondly, please refer to the following as well. Figure 6 and Figure 7The liquid supply module includes a first annular groove 21, a second annular groove 22, a through hole 23, multiple pipes 24, and a circular tube 25. The first annular groove 21 is formed on the surface of the fixed column 13 and close to the side of the fixed tube 12. The second annular groove 22 is formed on the surface of the fixed column 13 and away from the side of the fixed tube 12. The through hole 23 is formed inside the connecting rod 11 and the fixing block 16 and communicates with multiple second nozzles 8. Multiple pipes 24 are fixed inside the frustum tube 6 and communicate with multiple first nozzles 7 respectively. The circular tube 25 is fixed at the end of multiple pipes 24 away from the first nozzles 7 and communicates with all pipes 24.

[0057] It is worth mentioning that in the initial state, the first annular groove 21 is connected to the pipe 24 and the connecting pipe 5. When the fixed block 16 is moved by the wind and approaches the frustum tube 6, the fixed column 13 moves into the interior of the fixed pipe 12, the pipe 24 is closed by the fixed column 13, and the second annular groove 22 is connected to the connecting pipe 5.

[0058] As described above, when the wind blows the fixed column 13 into the fixed pipe 12, the first annular groove 21 moves into the fixed pipe 12, the pipe 24 separates from the first annular groove 21, the fixed column 13 seals the pipe 24, the connecting pipe 5 is connected to the second annular groove 22, the liquid inside the connecting pipe 5 enters the second nozzle 8 through the second annular groove 22, and sprays through the second nozzle 8. When there is no wind, the fixed column 13 returns to its original state, the second annular groove 22 is disconnected from the connecting pipe 5, the first annular groove 21 is connected to the connecting pipe 5 and the pipe 24, so that the first nozzle 7 sprays.

[0059] Secondly, please refer to Figure 8 A cleaning spring 26 is fixed on the outer side of the first annular groove 21 and near the second annular groove 22.

[0060] It is worth mentioning that the annular tube 25 has a filter screen inside for filtering impurities.

[0061] It should be noted that the cleaning spring 26 contacts the annular tube 25. When the fixed column 13 rotates, the cleaning spring 26 moves in a circular motion along the annular tube 25, which can clean the impurities on the filter screen during the circular motion of the cleaning spring 26.

[0062] As described above, when the fan blade 15 rotates due to the wind, it drives the cleaning spring 26 to rotate as well, so that the cleaning spring 26 moves in a circular motion against the annular tube 25 to clean the impurities adhering to the surface of the annular tube 25, so as to ensure that water enters the inside of the pipe 24 and ensure the dust removal effect of the first nozzle 7.

[0063] Secondly, please refer to it again. Figure 8A rubber ring gasket is provided on the outer side of the fixing column 13 and the part located between the first annular groove 21 and the second annular groove 22.

[0064] As described above, when the wind drives the fan blade 15 to move, the fixed column 13 moves away from the frustum tube 6, causing the rubber ring pad to move accordingly. During the movement, it scrapes away the fine impurities adhering to the filter screen surface of the annular tube 25, allowing the fine impurities to mix with water and be sprayed out from the second nozzle 8.

[0065] Example 2

[0066] Please see the appendix Figure 3 As shown, this is the second embodiment of the present invention. This embodiment provides a dust collection device for purifying the air environment of a construction site. It also includes a filtration mechanism and a waste removal mechanism. The filtration mechanism is located inside the connecting pipe 5 and is used to filter impurities in the liquid. The waste removal mechanism is located at the lower end of the lower U-shaped pipe 4 and is used to remove the impurities filtered by the filtration mechanism.

[0067] Specifically, when the liquid enters the frustum tube 6 through the connecting pipe 5, it passes through the filtration mechanism to filter impurities in the liquid. The filtered impurities are isolated inside the lower U-shaped tube 4. When the impurities are being treated, the spraying operation is stopped, allowing the water to fall into the impurity discharge mechanism. The impurity discharge mechanism is adjusted to discharge the impurities inside.

[0068] In a preferred embodiment, please refer to Figure 10 and Figure 11 The filtration mechanism includes a filter plate 41, an impeller 42, a second cleaning brush 43, and a baffle 44. The filter plate 41 is fixed to the lower end inside the connecting pipe 5. The impeller 42 is rotatably connected to the upper end of the filter plate 41. The second cleaning brush 43 is fixed to the lower end of the impeller 42 and located at the lower part of the filter plate 41. The baffle 44 is fixed to the outside of the impeller 42 and close to the upper part of the filter plate 41. The baffle 44 and the second cleaning brush 43 are on the same vertical plane.

[0069] In this embodiment, when the liquid enters the frustum tube 6 through the connecting pipe 5, it passes through the filter plate 41 to filter impurities in the liquid. At the same time, the water flowing through the filter plate 41 drives the impeller 42 to rotate, causing the second cleaning brush 43 and the baffle 44 to rotate synchronously. The second cleaning brush 43 cleans the impurities covering the surface of the filter plate 41. When the second cleaning brush 43 rotates, the baffle 44 seals the area cleaned by the second cleaning brush 43 to prevent impurities from entering the interior of the frustum tube 6 through the filter plate 41, thus ensuring the cleaning effect.

[0070] Secondly, please refer to again Figure 12 and Figure 13The waste removal mechanism includes a waste storage tube 51, a sealing cap 52, a third cleaning brush 53, a rectangular rod 54, a sealing block 55, a throttle 56, and a third spring 57. The waste storage tube 51 is fixed to the lower end of the lower U-shaped tube 4. The sealing cap 52 is threadedly connected to the lower end of the waste storage tube 51. The third cleaning brush 53 is rotatably connected to the upper end of the sealing cap 52 and is in contact with the inside of the waste storage tube 51. The rectangular rod 54 is fixed to the middle of the third cleaning brush 53. The throttle 56 is slidably connected to the lower end of the rectangular rod 54. The sealing block 55 is fixed to the outer side of the upper end of the throttle 56. The third spring 57 is located on the outer side of the rectangular rod 54 and between the third cleaning brush 53 and the throttle 56.

[0071] Furthermore, a through groove is provided in the middle of the sealing cover 52, and the sealing block 55 is made of rubber. The diameter of the sealing block 55 is larger than the diameter of the through groove. The deformability of the sealing block 55 improves the sealing performance of the sealing block 55 on the sealing cover 52.

[0072] As described above, when cleaning impurities, pressing the handle 56 moves the sealing block 55 into the impurity storage tube 51, causing the sealing block 55 to release its seal on the sealing cover 52. Rotating the handle 56 causes the third cleaning brush 53 to rotate as well, cleaning the inner wall of the impurity storage tube 51. As the sealing block 55 moves into the impurity storage tube 51, the third spring 57 is compressed. When the pressure on the handle 56 is released, the elastic force of the third spring 57 causes the sealing block 55 to come into close contact with the sealing cover 52, sealing the sealing cover 52. When replacing the third cleaning brush 53 or treating larger impurities inside the impurity storage tube 51, rotating the sealing cover 52 separates the sealing cover 52 from the impurity storage tube 51, allowing the third cleaning brush 53 to be removed from the impurity storage tube 51. This improves convenience for replacing the impurity storage tube 51 and treating larger impurities inside the impurity storage tube 51.

[0073] The working principle of this invention is as follows: In windy weather, when the wind blows from the upper U-shaped pipe 3 to the lower U-shaped pipe 4, the wind moves in the direction of the spray of the first nozzle 7 and will not affect the dust removal operation. When the wind blows from the lower U-shaped pipe 4 to the upper U-shaped pipe 3, the wind moves against the direction of the spray of the first nozzle 7. When the wind drives the wind power conversion mechanism to operate, the first nozzle 7 stops spraying and the second nozzle 8 starts spraying, reducing the impact of the wind on the spray range to ensure the effectiveness of the dust removal operation. When the liquid enters the interior of the frustum tube 6 through the connecting pipe 5, it passes through the filtration mechanism to filter impurities in the liquid. The filtered impurities are isolated inside the lower U-shaped pipe 4. When the impurities are being processed, the spraying operation is stopped, allowing the water to fall into the interior of the impurity removal mechanism. Adjusting the impurity removal mechanism allows the impurities inside to be discharged, ensuring the filtration performance of the filter plate 41, ensuring the flow of water, and ensuring the normal operation of the first nozzle 7 and the second nozzle 8.

[0074] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A dust collection device for purifying the air environment at construction sites, characterized in that: include: A guardrail (1) is provided with multiple water pipes (2) fixed on one side of the guardrail (1). An upper U-shaped pipe (3) is fixed at the upper end of the water pipe (2). A lower U-shaped pipe (4) is fixed at the end of the upper U-shaped pipe (3) away from the water pipe (2). A connecting pipe (5) is fixed at the end of the lower U-shaped pipe (4) away from the upper U-shaped pipe (3). A frustum tube (6) is fixed at the end of the connecting pipe (5) away from the lower U-shaped pipe (4). Multiple first nozzles (7) are provided inside the frustum tube (6). Multiple second nozzles (8) are provided on one side of the frustum tube (6). The wind power conversion mechanism is located inside the frustum tube (6) and is movably connected to the connecting pipe (5). One end of the wind power conversion mechanism is located outside the frustum tube (6). The wind power conversion mechanism is used to use wind power to make the second nozzle (8) replace the first nozzle (7) for operation. A filtration mechanism is disposed inside the connecting pipe (5) and is used to filter impurities in the liquid; Impurity removal mechanism, which is located at the lower end of the lower U-shaped tube (4), is used to handle impurities filtered by the filtration mechanism; The wind power conversion mechanism includes a connecting rod (11), a fixed pipe (12), a fixed column (13), a first spring (14), a fan blade (15), a fixing block (16), and a liquid supply module. The connecting rod (11) is movably connected to the upper end inside the connecting pipe (5). The fixed pipe (12) is fixed to the upper end inside the connecting pipe (5) and located outside the connecting rod (11). The fixed column (13) is movably connected to the inside of the fixed pipe (12). The first spring (14) is located outside the connecting rod (11) and located outside the connecting pipe. (5) Between the fixed column (13), the fan blade (15) is fixed at the end of the connecting rod (11) away from the frustum tube (6), the fixed block (16) is fixed at the end of the connecting rod (11) close to the frustum tube (6), and a plurality of second nozzles (8) are fixed on the side of the fixed block (16) away from the frustum tube (6). The liquid supply module is set inside the frustum tube (6), the connecting rod (11), the fixed column (13) and the fixed block (16). The liquid supply module is used to switch the first nozzle (7) or the second nozzle (8) for liquid supply. A fixing rod (32) is slidably connected inside the fixing block (16). A first cleaning brush (31) is fixed at one end of the fixing rod (32). A stop block (33) is fixed at the end of the fixing rod (32) away from the first cleaning brush (31). A second spring (34) is provided on the outside of the fixing rod (32), and the second spring (34) is located between the stop block (33) and the fixing block (16).

2. The dust collection device for purifying the air environment at construction sites according to claim 1, characterized in that: A limiting ring (17) is rotatably connected to the outer side of the connecting rod (11) and near the frustum tube (6).

3. A dust collection device for purifying the air environment at construction sites according to claim 1, characterized in that: In the initial state, the first cleaning brush (31) is located inside the fixed block (16). When the fan blade (15) is rotated by wind force, the first cleaning brush (31) extends out from inside the fixed block (16) and the extended first cleaning brush (31) contacts the surface of the first nozzle (7).

4. A dust collection device for purifying the air environment at construction sites according to claim 1, characterized in that: The liquid supply module includes a first annular groove (21), a second annular groove (22), a through hole (23), multiple pipes (24), and a circular tube (25). The first annular groove (21) is opened on the surface of the fixed column (13) and close to the side of the fixed tube (12). The second annular groove (22) is opened on the surface of the fixed column (13) and away from the side of the fixed tube (12). The through hole (23) is opened inside the connecting rod (11) and the fixing block (16). The through hole (23) is connected to multiple second nozzles (8). Multiple pipes (24) are fixed inside the frustum tube (6). Multiple pipes (24) are connected to multiple first nozzles (7). The circular tube (25) is fixed at the end of multiple pipes (24) away from the first nozzles (7). All pipes (24) are connected to the circular tube (25).

5. A dust collection device for purifying the air environment at construction sites according to claim 4, characterized in that: In the initial state, the first annular groove (21) is connected to the pipe (24) and the connecting pipe (5). When the fixed block (16) is moved by the wind and approaches the frustum tube (6), the fixed column (13) moves into the interior of the fixed tube (12), the pipe (24) is closed by the fixed column (13), and the second annular groove (22) is connected to the connecting pipe (5).

6. A dust collection device for purifying the air environment at construction sites according to claim 4, characterized in that: A cleaning spring (26) is fixed on the outer side of the first annular groove (21) and near the second annular groove (22).

7. A dust collection device for purifying the air environment at construction sites according to claim 6, characterized in that: In the initial state, the cleaning spring (26) is in contact with the annular tube (25). When the fixed column (13) rotates, the cleaning spring (26) moves in a circular motion along the annular tube (25).

8. A dust collection device for purifying the air environment at construction sites according to claim 4, characterized in that: A rubber ring gasket is provided on the outer side of the fixed column (13) and the portion located between the first annular groove (21) and the second annular groove (22).

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