Dust removal box for building construction site

Abstract

The utility model relates to the technical field of buildings. The dust removal box comprises a box body, a dust receiving structure is arranged on the outer surface of the lower end of the left side of the box body, a dust collecting structure and a dust falling structure are arranged in the box body, and an adjusting structure is arranged on the outer surface of the left side of the box body. By starting the water pump, water in the water storage bin can enter the first connecting hose, water flow is sprayed outwards through the multiple sets of spraying holes, and sprayed water mist can wrap dust and rapidly fall into the dust receiving hopper after making contact with the dust; when wind blows on a construction site, dust can be subjected to dust falling treatment by spraying water mist, the interior of the dust hopper can be cleaned after equipment is used, the situation that the dust removal effect of the equipment is affected by wind blowing is avoided, the applicability of the equipment is improved to a certain degree, the overall structural design is simple and reasonable, practicability is very high, and popularization is easy. Popularization and application are easy.

Description

Technical Field

[0001] This utility model relates to the field of building technology; more specifically, it relates to a dust collection box for use on building construction sites. Background Technology

[0002] Dust collection boxes used at construction sites are specially designed devices primarily used to filter and remove dust and particulate matter generated during construction. This is of great significance for improving the construction environment and air quality, protecting worker health, and improving the working environment. Through reasonable design and efficient working principles, it can effectively address the dust problem generated during construction.

[0003] Currently, existing dust collection boxes suffer from several drawbacks during use. Most rely on a fixed suction cylinder to collect dust, making it difficult to adjust the suction position and angle based on the location of the dust. This reduces the practicality of the equipment. Furthermore, most existing devices use wind power for dust collection, which can cause dust to fly everywhere in windy conditions, further reducing the effectiveness of wind-powered dust collection and compromising the equipment's applicability. Therefore, there is an urgent need for a dust collection box specifically designed for construction sites to address these issues. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a dust collection box for construction sites to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a dust collection box for construction sites, comprising:

[0006] The box body has a dust collection structure on the lower left outer surface, a dust collection structure and a dust suppression structure inside the box body, and an adjustment structure on the lower left outer surface of the box body.

[0007] The dust collection structure includes a connecting plate, and the outer surface of one end of the connecting plate is fixedly connected to the outer surface of the lower left side of the box. The outer surface of the upper end of the connecting plate is provided with a locking groove, and there are two sets of locking grooves. The two sets of locking grooves are internally connected to a dust collection hopper. The interior of the dust collection hopper is concave, and the outer surfaces of the bottom two ends of the dust collection hopper are fixedly connected to trapezoidal mounting blocks. The interior of the locking groove is set as a trapezoidal groove, and the external dimensions of the trapezoidal mounting blocks are the same as the internal dimensions of the trapezoidal groove.

[0008] The dust collection structure includes a dust collection chamber, which is located at one end inside the housing.

[0009] The dust suppression structure includes a water storage tank, which is located at the other end of the box.

[0010] The adjustment structure includes a first support frame and a dust inlet, and the bottom surface of the first support frame is fixedly connected to the outer surface of one end of the connecting plate.

[0011] Preferably, the dust collection structure further includes a mounting frame, with the outer surface of the upper end of the mounting frame fixedly connected to the middle position of the top surface of the dust collection chamber. An electric fan is installed at the middle position of the bottom wall surface inside the mounting frame. An installation hole is opened inside the outer surface of the right side of the box, and a filter plate is installed inside the installation hole. A collection hopper is fixedly connected to the inner wall surface at the middle position of the dust collection chamber, and a dust collection box is inserted inside the outer surface of the front end of the box. The position of the dust collection box corresponds to the position of the collection hopper. This design uses the electric fan to draw in outside air, and the filter plate filters the dust in the air, allowing the dust in the air to enter the interior of the dust collection box through the collection hopper, thereby collecting the dust.

[0012] Preferably, the dust suppression structure further includes a water pump, which is installed on the bottom wall surface of one end of the water storage tank. A water inlet is provided inside the outer surface of the other end of the upper part of the tank, and a rubber stopper is inserted inside the water inlet. The output end of the water pump is connected to a first connecting hose. A connecting groove is provided inside the outer surface of the lower end of the dust inlet, and the inside of the connecting groove is connected to one end of the first connecting hose. A spray hole is provided inside the outer surface of the dust inlet on one side of the connecting groove. Multiple sets of spray holes are provided. This design allows the water stored inside the water storage tank to be drawn into the inside of the first connecting hose by starting the water pump, and the dust is sprayed through multiple sets of spray holes.

[0013] Preferably, the adjustment structure further includes a first lead screw, which is bearing-connected to the inner wall surfaces at both ends of the first support frame. A first rotary handle is fixedly connected to the outer surface of one end of the first lead screw. A first movable block is sleeved on the outer surface of the first lead screw, and a second support frame is fixedly connected to the outer surface of the upper end of the first movable block. A second lead screw is bearing-connected to the inner wall surfaces at the upper and lower ends of the second support frame. A second rotary handle is fixedly connected to the outer surface of one end of the second lead screw, and a second movable block is sleeved on the outer surface of the second lead screw. A fixed collar is fixedly connected to the upper end of the outer surface of one end of the second movable block, and a rotating rod is connected to the inner bearing of the outer surface of one end of the second movable block. A spring and a rotating mechanism are sleeved on the outer surface of one end of the rotating rod. The handle and the outer surface of the other end of the rotating rod are fixedly connected to a connecting post. The lower end of the outer surface of the connecting post is internally threaded with a clamping bolt. The outer surfaces of both ends of the connecting post are hinged to connecting rings. The lower end of the outer surface of the connecting ring is fixedly connected to a dust inlet. The outer surface of the other side of the upper end of the dust inlet is connected to a second connecting hose. The outer surface of one end of the second connecting hose is connected to the interior of the outer surface of one end of the upper end of the housing. This design drives the first lead screw to rotate by rotating the first throttle, so that the first moving block can move left and right on the outer surface of the first lead screw. At the same time, this design drives the second lead screw to rotate by rotating the second throttle, so that the second moving block on the outer surface of the second lead screw can move up and down.

[0014] Preferably, the inside of the fixed collar is a gear groove, and the outer surface of the lower end of the rotating handle is a gear block, and the external dimensions of the gear block are adapted to the internal dimensions of the gear groove. This design allows the rotating rod to rotate inside one end of the second moving block, and allows the gear block on the outer surface of the lower end of the rotating handle to be inserted into the gear groove of the fixed collar, thereby positioning the position of the rotating rod after rotation.

[0015] Preferably, a limiting ring is provided on the outer surface of the upper end of the rotating rod. The two ends of the spring abut against the bottom surface of the limiting ring and the inner wall surface of the lower end of the rotating handle, respectively. The outer dimensions of the limiting ring are adapted to the inner dimensions of the rotating handle. Rectangular sliders are provided on the outer surfaces of both sides of the limiting ring. Rectangular grooves are provided on the inner wall surfaces of both sides of the rotating handle. The inner dimensions of the rectangular grooves are adapted to the outer dimensions of the rectangular sliders. The rectangular sliders are engaged and slidably connected inside the rectangular grooves. This design allows the rotating handle to move on the outer surface of the upper end of the rotating rod and prevents the rotating handle from detaching from the outer surface of the rotating rod. It also makes the rotating handle more stable when moving.

[0016] The technical effects and advantages of this utility model are as follows: By rotating the first handle, the first lead screw is rotated, thereby causing the second support frame to move left and right. By rotating the second handle, the second lead screw is rotated, causing the second moving block to move up and down on the outer surface of the second lead screw. This allows the dust inlet to move laterally and longitudinally, thereby adjusting the position of the dust inlet during use. By rotating the rotating handle, the rotating rod is rotated, thereby adjusting the orientation of the dust inlet. Then, the hinged rotating connecting ring causes the dust inlet to rotate hingedly, at which point the angle of use of the dust inlet can be adjusted. This makes it easy to adjust the position and angle of the dust inlet for dust suction according to the location of the dust, thereby improving the practicality of the equipment to a certain extent.

[0017] By activating the water pump, water from the storage tank enters the first connecting hose and flows through multiple spray nozzles to spray outwards. The sprayed water mist encapsulates dust upon contact with it, causing it to fall quickly into the dust collection hopper. When it is windy at the construction site, the water mist can be used to suppress dust. After the equipment is used, the inside of the dust collection hopper can be cleaned to prevent wind from affecting the dust removal effect. This improves the applicability of the equipment to a certain extent. Moreover, its overall structure is simple and reasonable in design, highly practical, and easy to promote and apply. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is an exploded three-dimensional structural diagram of the dust collection structure and dust receiving structure of this utility model.

[0020] Figure 3 This is a partial explosion diagram of the three-dimensional structure of the dust-reducing structure of this utility model.

[0021] Figure 4 This is a partial exploded view of the three-dimensional structure of the dust suppression and adjustment structure of this utility model.

[0022] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle.

[0023] The attached diagram is labeled as follows: 1. Housing; 2. Dust collection structure; 21. Connecting plate; 22. Engaging slide; 23. Dust hopper; 3. Dust collection structure; 31. Dust collection chamber; 32. Mounting frame; 33. Fan; 34. Mounting hole; 35. Filter plate; 36. Concentrated hopper; 37. Dust collection box; 4. Dust settling structure; 41. Water storage chamber; 42. Water pump; 43. Water inlet; 44. Rubber stopper; 45. First connecting hose; 46. Spray hole; 5. Adjustment structure; 51. First support frame; 52. First lead screw; 53. First throttle; 54. First moving block; 55. Second support frame; 56. Second lead screw; 57. Second throttle; 58. Second moving block; 59. Fixed collar; 510. Rotating rod; 511. Spring; 512. Rotating handle; 513. Connecting column; 514. Tightening bolt; 515. Connecting ring; 516. Dust inlet; 517. Second connecting hose. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The buildings involved in this utility model are not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Example 1

[0026] like Figures 1-5 As shown in the figure, this embodiment proposes a dust collection box for use on a construction site, comprising:

[0027] The box 1 has a dust collection structure 2 on the lower left side of the outer surface, and a dust collection structure 3 and a dust settling structure 4 are provided inside the box 1. The box 1 also has an adjustment structure 5 on the lower left side of the outer surface.

[0028] The dust collection structure 2 includes a connecting plate 21, and the outer surface of one end of the connecting plate 21 is fixedly connected to the outer surface of the lower left side of the housing 1. The outer surface of the upper end of the connecting plate 21 is provided with a locking groove 22, and there are two sets of locking grooves 22. A dust collection hopper 23 is inserted into the interior of the two sets of locking grooves 22. The interior of the dust collection hopper 23 is concave, and rectangular mounting blocks are fixedly connected to the outer surfaces of the bottom two ends of the dust collection hopper 23. This design allows the dust collection hopper 23 to be locked into the interior of the two sets of locking grooves 22 by the two sets of trapezoidal mounting blocks. At this time, the installation of the dust collection hopper 23 can be completed. At the same time, it is convenient to receive the dust after dust suppression treatment through the concave interior of the dust collection hopper 23. Conversely, this design also makes it easy to pull out the dust collection hopper 23, so that the trapezoidal mounting blocks are disengaged from the interior of the locking grooves 22, thereby completing the disassembly of the dust collection hopper 23 and facilitating its internal cleaning.

[0029] The dust collection structure 3 includes a dust collection chamber 31, which is located at one end inside the housing 1. The dust collection structure 3 also includes a mounting frame 32, with the outer surface of the upper end of the mounting frame 32 fixedly connected to the middle position of the top surface of the dust collection chamber 31. A fan 33 is installed at the middle position of the bottom wall surface inside the mounting frame 32. A mounting hole 34 is opened inside the outer surface of the right side of the housing 1, and a filter plate 35 is installed inside the mounting hole 34. A collection hopper 36 is fixedly connected to the inner wall surface at the middle position of the dust collection chamber 31, and a dust collection box 37 is inserted inside the outer surface of the front end of the housing 1. This design generates suction by starting the fan 33, which can draw in outside air. At the same time, the dust in the air can be filtered by the filter plate 35, and the dust blocked by the filter plate 35 is collected into the dust collection box 37 by the collection hopper 36. The filter plate 35 can be disassembled for replacement or cleaning.

[0030] The dust suppression structure 4 includes a water storage tank 41, which is located at the other end of the housing 1. The dust suppression structure 4 also includes a water pump 42, which is installed on the bottom wall surface of one end of the water storage tank 41. A water inlet 43 is provided inside the outer surface of the upper end of the housing 1, and a rubber stopper 44 is inserted inside the water inlet 43. A first connecting hose 45 is fixedly connected to the output end of the water pump 42. A connecting groove is provided inside the outer surface of one side of the lower end of the dust inlet 516, and a connecting groove is provided on the outer surface of one side of the connecting groove. There are multiple sets of spray holes 46. When the water storage tank 41 is insufficient, water can be injected into the water storage tank 41 through the water inlet 43 by pulling out the rubber stopper 44. When the equipment is in use, the water pump 42 can be started to pump the water stored in the water storage tank 41 into the first connecting hose 45 and spray the stored water outward through the multiple sets of spray holes 46. This can quickly reduce dust, and the dust after dust reduction can fall into the dust collection hopper 23 for collection.

[0031] Example 2

[0032] like Figures 2-5 As shown, based on the same concept as the above embodiments, this embodiment also proposes:

[0033] The adjustment structure 5 includes a first support frame 51 and a dust inlet 516. The bottom surface of the first support frame 51 is fixedly connected to the outer surface of one end of the connecting plate 21. The adjustment structure 5 also includes a first lead screw 52, ​​which is bearing-connected to the inner wall surfaces at both ends of the first support frame 51. A first rotary handle 53 is fixedly connected to the outer surface of one end of the first lead screw 52. A first moving block 54 is sleeved on the outer surface of the first lead screw 52. A second support frame 55 is fixedly connected to the outer surface of the upper end of the first moving block 54. A second lead screw 56 is bearing-connected to the inner wall surfaces at the upper and lower ends of the second support frame 55. A second rotary handle 57 is fixedly connected to the outer surface of one end of the second lead screw 56. A second rotary handle 57 is sleeved on the outer surface of the second lead screw 56. The second movable block 58 has a fixed collar 59 fixedly connected to the upper end of one end of its outer surface. A rotating rod 510 is connected to the internal bearing of the outer surface of one end of the second movable block 58. A spring 511 and a rotating handle 512 are fitted onto the outer surface of one end of the rotating rod 510. A connecting post 513 is fixedly connected to the outer surface of the other end of the rotating rod 510. A tightening bolt 514 is threaded into the inner surface of the lower end of the outer surface of the connecting post 513. Connecting rings 515 are hinged to the outer surfaces of both ends of the connecting post 513. A dust inlet 516 is fixedly connected to the outer surface of the lower end of the connecting ring 515. A second connecting hose 517 is connected to the outer surface of the other side of the upper end of the dust inlet 516. One end of the second connecting hose 517... The outer surface is connected to the interior of the upper outer surface of the housing 1. This design allows for adjustment of the equipment's lateral position by rotating the first handle 53, which in turn rotates the first lead screw 52 at one end of the first handle 53, causing the first moving block 54 to move left or right relative to the outer surface of the first handle 53. This movement simultaneously moves the second support frame 55 left or right. The second handle 57 can then be rotated, causing the second lead screw 56 at one end of the second handle 57 to rotate, which in turn moves the second moving block 58 on the outer surface of the second lead screw 56 upward or downward. This allows for adjustment of the equipment's height. Finally, the rotating handle 512 can be pulled upward to disengage the lower end of the rotating handle 512 from the fixing collar. Inside 59, rotating the handle 512 synchronously drives the rotating rod 510 to rotate. When the rotating rod 510 rotates to a suitable position, the handle 512 can be released so that it can be inserted into the fixed collar 59 under the elasticity of the spring 511, thereby fixing the position of the rotating rod 510 and the handle 512. This allows the orientation of the equipment to be adjusted. Then, the hinged rotating connecting ring 515 can be connected. When the angle of the connecting ring 515 is rotated to a suitable position, the outer surface of one end of the clamping bolt 514 can be rotated to abut against the outer surface of one side of the connecting ring 515, thereby fixing the angle of the connecting ring 515 after rotation. This allows the angle of the equipment to be adjusted during use.

[0034] The inside of the fixed collar 59 is set as a gear groove, and the outer surface of the lower end of the rotating handle 512 is set as a gear block. The external dimensions of the gear block are adapted to the internal dimensions of the gear groove. With this design, when the rotating handle 512 is pulled upward, the gear block can disengage from the inside of the gear groove. At this time, the rotating rod 510 can rotate inside one end of the second moving block 58. When the rotating handle 512 moves downward, the gear block can be reinserted into the inside of the gear groove, thereby fixing the position of the rotating rod 510 after rotation.

[0035] A limiting ring is provided on the outer surface of the upper end of the rotating rod 510. The two ends of the spring 511 abut against the bottom surface of the limiting ring and the inner wall surface of the lower end of the rotating handle 512, respectively. The outer dimensions of the limiting ring are adapted to the inner dimensions of the rotating handle 512. Rectangular sliders are provided on the outer surfaces of both sides of the limiting ring. Rectangular grooves are opened on the inner wall surfaces of both sides of the rotating handle 512. The inner dimensions of the rectangular grooves are adapted to the outer dimensions of the rectangular sliders. The rectangular sliders are engaged and slidably connected inside the rectangular grooves. This design makes the rotating handle 512 more stable when moving on the upper surface of the rotating rod 510 and prevents the rotating handle 512 from falling off the upper outer surface of the rotating rod 510. When the rotating handle 512 moves, the rectangular sliders on both sides of the limiting ring move synchronously inside the rectangular grooves opened on the inner wall surfaces of both sides of the rotating handle 512. This makes the rotating handle 512 move stably and does not deflect. After the rotating handle 512 is released, the rotating handle 512 can automatically reset itself by the elasticity of the spring 511.

[0036] Working principle: When using the equipment, first place the equipment in a suitable position. By rotating the first handle 53, the first lead screw 52 is rotated, which allows the first moving block 54 and the second support frame 55 to move left or right. Then, rotating the second handle 57 rotates the second lead screw 56, which causes the second moving block 58 to move up or down on the outer surface of the second lead screw 56. Next, pull the rotating handle 512 upwards, causing the rotating handle 512 to disengage from the inside of the fixed collar 59. Then, rotate the rotating handle 512, which drives the rotating rod 510 and the connecting column 513 to rotate synchronously. Finally, release the rotating handle 512. The spring 511 self-resets and is inserted into the fixed collar 59 under its own elasticity, so that the gear groove and the gear block are engaged together. Thus, the working angle position of the rotating rod 510, the rotating handle 512 and the connecting column 513 is determined. Then, the rotating connecting ring 515 is hinged to the outer surface of the connecting column 513. After the position of the connecting ring 515 is determined, the tightening bolt 514 can be rotated so that the outer surface of one end of the tightening bolt 514 abuts against the outer surface of one side of the connecting ring 515, so that the angle of the connecting ring 515 is positioned. Thus, the position and angle of the dust inlet 516 during use can be positioned, and the equipment can be adjusted according to the actual conditions of the construction site.

[0037] At this point, the water pump 42 can be activated as needed to pump the stored water inside the water storage tank 41 into the first connecting hose 45, and spray the stored water outward through multiple sets of spray holes 46, thereby suppressing dust. After dust suppression, the dust falls into the dust collection hopper 23 for collection. When the equipment is finished, the dust collection hopper 23 can be pulled out, causing the two sets of trapezoidal mounting blocks at the lower end of the dust collection hopper 23 to disengage from the two sets of engaging sliding grooves 22, thereby allowing the dust collection hopper 23 to be emptied and cleaned. Simultaneously, the electric fan 33 can be activated to drive the dust inlet 516 to draw in external air, and the air is discharged into the dust collection chamber 31 through the second connecting hose 517. At this time, the air is filtered by the filter plate 35, and the dust in the air falls into the dust collection box 37 through the collection hopper 36. After the equipment is used, the filter plate 35 can be removed for cleaning or replacement, and the dust collection box 37 can be pulled out for emptying and cleaning. The above is the complete working principle of this utility model.

[0038] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0039] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0040] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dust collection box for use at a construction site, characterized in that, include: The box (1) has a dust collection structure (2) on the outer surface of the lower left side, and a dust collection structure (3) and a dust settling structure (4) are provided inside the box (1). The outer surface of the left side of the box (1) is provided with an adjustment structure (5). The dust collection structure (2) includes a connecting plate (21), and the outer surface of one end of the connecting plate (21) is fixedly connected to the outer surface of the lower left side of the box (1). The outer surface of the upper end of the connecting plate (21) is provided with a locking groove (22), and there are two sets of locking grooves (22). The two sets of locking grooves (22) are locked together with a dust collection hopper (23). The interior of the dust collection hopper (23) is concave, and the outer surfaces of the bottom two ends of the dust collection hopper (23) are fixedly connected with trapezoidal mounting blocks. The interior of the locking groove (22) is set as a trapezoidal groove, and the external dimensions of the trapezoidal mounting blocks are the same as the internal dimensions of the trapezoidal groove. The dust collection structure (3) includes a dust collection chamber (31), and the dust collection chamber (31) is located at one end inside the box body (1); The dust suppression structure (4) includes a water storage tank (41), and the water storage tank (41) is located at the other end of the box (1); The adjustment structure (5) includes a first support frame (51) and a dust inlet (516), and the bottom surface of the first support frame (51) is fixedly connected to the outer surface of one end of the upper part of the connecting plate (21).

2. A dust collection box for construction sites according to claim 1, characterized in that: The dust collection structure (3) also includes a mounting frame (32), and the outer surface of the upper end of the mounting frame (32) is fixedly connected to the middle position of the top surface of the dust collection chamber (31). A fan (33) is installed in the middle position of the bottom wall surface inside the mounting frame (32). An installation hole (34) is opened inside the outer surface of the right side of the box (1), and a filter plate (35) is installed inside the installation hole (34). A collection hopper (36) is fixedly connected to the inner wall surface at the middle position of the dust collection chamber (31), and a dust collection box (37) is inserted inside the outer surface of the front end of the box (1). The position of the dust collection box (37) corresponds to the position of the collection hopper (36).

3. A dust collection box for construction sites according to claim 1, characterized in that: The dust suppression structure (4) also includes a water pump (42), and the water pump (42) is installed on the bottom wall surface of one end of the water storage tank (41). A water inlet (43) is opened inside the outer surface of the other end of the upper end of the box (1), and a rubber stopper (44) is inserted inside the water inlet (43). The output end of the water pump (42) is connected to a first connecting hose (45). A connecting groove is opened inside the lower outer surface of the dust inlet (516), and the inside of the connecting groove is connected to one end of the first connecting hose (45). A spray hole (46) is opened inside the outer surface of the dust inlet (516) on one side of the connecting groove, and multiple sets of spray holes (46) are provided.

4. A dust collection box for construction sites according to claim 1, characterized in that: The adjustment structure (5) further includes a first lead screw (52), and the first lead screw (52) is bearing connected to the inner wall surfaces of both ends of the first support frame (51). A first throttle (53) is fixedly connected to the outer surface of one end of the first lead screw (52). A first moving block (54) is sleeved on the outer surface of the first lead screw (52). A second support frame (55) is fixedly connected to the outer surface of the upper end of the first moving block (54). A second lead screw (56) is bearing connected to the inner wall surfaces of the upper and lower ends of the second support frame (55). A second throttle (57) is fixedly connected to the outer surface of one end of the second lead screw (56). A second moving block (58) is sleeved on the outer surface of the second lead screw (56). A fixing collar (59) is fixedly connected to the upper end of the outer surface of one end of the second moving block (58). The second moving block (58) has an internal bearing on one end of its outer surface connected to a rotating rod (510). The outer surface of one end of the rotating rod (510) is fitted with a spring (511) and a rotating handle (512). The outer surface of the other end of the rotating rod (510) is fixedly connected to a connecting post (513). The inner thread of the outer surface of the lower end of the connecting post (513) is connected to a tightening bolt (514). The outer surfaces of both ends of the connecting post (513) are hinged to a connecting ring (515). The outer surface of the lower end of the connecting ring (515) is fixedly connected to a dust inlet (516). The outer surface of the other end of the upper end of the dust inlet (516) is connected to a second connecting hose (517). The outer surface of one end of the second connecting hose (517) is connected to the interior of the outer surface of the upper end of the housing (1).

5. A dust collection box for construction sites according to claim 4, characterized in that: The inside of the fixed collar (59) is set as a gear groove, and the outer surface of the lower end of the rotating handle (512) is set as a gear block, and the external dimensions of the gear block are adapted to the internal dimensions of the gear groove.

6. A dust collection box for construction sites according to claim 4, characterized in that: A limiting ring is provided on the outer surface of the upper end of the rotating rod (510). The two ends of the spring (511) abut against the bottom surface of the limiting ring and the inner wall surface of the lower end of the rotating handle (512), respectively. The outer dimensions of the limiting ring are adapted to the inner dimensions of the rotating handle (512). Rectangular sliders are provided on the outer surfaces of both sides of the limiting ring. Rectangular grooves are provided on the inner wall surfaces of both sides of the rotating handle (512). The inner dimensions of the rectangular grooves are adapted to the outer dimensions of the rectangular sliders. The rectangular sliders are engaged and slidably connected inside the rectangular grooves.

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