Environment-friendly dust removal equipment for building construction

Abstract

The invention relates to the technical field of dust removal equipment, in particular to environment-friendly dust removal equipment for building construction, which comprises two groups of spray pipes arranged in parallel, the lower parts of the spray pipes are connected with dust screens, the lower ends of the dust screens are connected with winding shafts, the winding shafts are positioned in water return boxes, and the two ends of the winding shafts penetrate through the water return boxes and are rotationally connected with the water return boxes. Nozzles spraying downwards obliquely are arranged on the sides, close to each other, of the two spraying pipes, a water inlet pipe is arranged above the position between the two spraying pipes, the two ends of the water inlet pipe are communicated with the two ends of the spraying pipes through connecting boxes, a water supply pipe penetrates through the water return box, a water supply support is connected between the water return box and the water inlet pipe, and the water inlet pipe is communicated with the water supply pipe through the water supply support. The water inlet pipe and the spraying pipe can be lifted up to unfold the dustproof net, the height of the dustproof net can be adjusted according to actual requirements, multiple groups of water supply pipes can be spliced according to the length requirements of the dustproof net, and therefore the length of the dustproof net is increased, and the actual requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of dust reduction equipment, and particularly relates to an environment-friendly dust removal equipment for construction. Background Art

[0002] During the construction process, a large amount of dust will be generated in the processes of earth excavation, material transportation, concrete mixing, etc. According to statistics, construction dust accounts for more than 30% of the urban dust pollution sources.

[0003] The traditional sprinkler dust reduction method relies too much on manual labor or fixed nozzles, with large water consumption and limited coverage. The effect will significantly decline in windy weather; while the dust-proof net covering method can only block dust, cannot actively reduce dust, and the net surface is easy to be blocked, requiring frequent manual cleaning; as for the dust reduction by fog cannon machines, due to the large volume and inconvenient movement of the equipment, it is impossible to form a fully enclosed dust reduction space, and there are problems such as high energy consumption, resulting in great limitations in use.

[0004] Therefore, it is necessary to design an environment-friendly dust removal equipment for construction to improve the dust removal problem at the construction site. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides an environment-friendly dust removal equipment for construction.

[0006] The technical solution adopted by the present invention to solve its technical problems is an environment-friendly dust removal equipment for construction, which includes two groups of spray pipes arranged in parallel. The lower parts of the spray pipes are all connected with dust-proof nets. The lower ends of the dust-proof nets are all connected with winding shafts. The winding shafts are located in the return water box. Both ends of the winding shafts pass through the return water box and are rotatably connected with the return water box. Nozzles for spraying obliquely downward are arranged on the side of the two groups of spray pipes close to each other. An inlet pipe is arranged above the two groups of spray pipes. Both ends of the inlet pipe are communicated with the two ends of the spray pipes through connection boxes. A water supply pipe passes through the return water box. A water supply support is connected between the return water box and the inlet pipe. The inlet pipe is communicated with the water supply pipe through the water supply support.

[0007] Preferably, the water supply support includes two groups of sleeves sleeved on the inlet pipe. Both ends of the sleeves are hermetically and slidably connected with the inlet pipe through sealing slip rings. The lower part of the sleeve is hinged with a hollow pipe through a first hinge seat. The lower end of the hollow pipe is hinged and installed on a second hinge seat on the upper part of the return water box. A water supply hose is arranged in the hollow pipe. The upper end of the water supply hose passes through the first hinge seat and is communicated with the sleeve. The lower end of the water supply hose passes through the second hinge seat, the return water box and is communicated with the water supply pipe;

[0008] A number of groups of water inlet holes are linearly distributed on the side surface of the inlet pipe. The distance between adjacent two groups of water inlet holes gradually decreases from the middle of the inlet pipe to both ends. One-way water inlet parts are arranged in the water inlet holes.

[0009] Preferably, the top edge of the return water box is connected to a protective frame. The upper part of the return water box communicates with a return water hole, and the side of the return water box communicates with a drain pipe.

[0010] Preferably, both ends of the winding shaft are connected to the outer wall of the return water box through coil springs. On both sides of the lower part of the two groups of dust-proof nets, there are clamping plates inclined towards the dust-proof nets. The lower ends of the clamping plates are hinged to support plates, and both ends of the support plates are connected to the protective frame. An expansion pad is arranged between the clamping plate and the support plate. The outer side of the protective frame is fixedly connected to a communication box, and the expansion pad and the water supply pipe are respectively communicated with the communication box through pipelines.

[0011] Preferably, on the lower part of the sides where the two groups of dust-proof nets are away from each other, there are roller brushes. Both ends of the roller brushes pass through the protective frame and are rotatably connected to the protective frame. Both ends of the winding shaft are connected to the first belt pulley through one-way bearings. Both ends of the roller brushes are connected to the second belt pulley, and the first belt pulley and the second belt pulley are driven by a transmission belt.

[0012] Preferably, guide rods fixed in the return water box are arranged below the two groups of dust-proof nets. The two groups of dust-proof nets both pass downward between the two groups of guide rods and then extend outward and are connected to the upper part of the winding shaft.

[0013] Preferably, arc-shaped slots corresponding to the spray pipes are provided on the upper part of the protective frame.

[0014] Preferably, both the first hinge seat and the second hinge seat are damping hinge seats.

[0015] Preferably, both ends of the water supply pipe are connected to quick-connect flanges or socket joints.

[0016] Advantages of the present invention:

[0017] (1) For the environmental protection dust removal equipment for building construction described in the present invention, the water inlet pipe can be lifted upward, and at the same time, the spray pipe can be lifted, so that the dust-proof net is unfolded. The height of the dust-proof net can be adjusted according to actual needs, and multiple groups of water supply pipes can be spliced according to the length requirement of the dust-proof net, so as to increase the length of the dust-proof net. Moreover, the positions of multiple groups of environmental protection dust removal equipment for building construction can be adjusted and arranged around the construction area to further improve the dust reduction treatment effect.

[0018] (2) For the environmental protection dust removal equipment for building construction described in the present invention, after the sleeve moves towards both ends of the water inlet pipe, the number of water inlet holes corresponding to the sleeve can be increased, so as to increase the water inflow of the water inlet pipe. In this way, when the height of the dust-proof net increases, the water inflow of the water inlet pipe can be increased, and the water spray amount of the spray pipe can be increased, so as to ensure the cleaning requirement of the dust-proof net and the dust reduction requirement of a larger dust reduction space.

[0019] (3) For an environmentally friendly dust removal device for building construction according to the present invention, after the water supply pipe is connected to the water supply, the water body enters the expansion pad through the communication box. Relying on the water supply pressure, the expansion pad can be driven to expand, and the clamping plate is pushed to move towards the dust-proof net side; by moving the clamping plates on both sides of the dust-proof net towards the dust-proof net, the dust-proof net can be clamped to prevent the spiral spring from pulling the dust-proof net downwards.

[0020] (4) For an environmentally friendly dust removal device for building construction according to the present invention, when the winding shaft winds up the dust-proof net, the dust-proof net moves downwards. At the same time, the first pulley drives the second pulley to rotate through the one-way bearing, thereby driving the roller brush to rotate, and cleaning the dust and other impurities attached to the outer side of the dust-proof net outwards to ensure the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the drawings and embodiments.

[0022] Figure 1 is the axonometric view of the present invention;

[0023] Figure 2 is the partial sectional axonometric view of the present invention;

[0024] Figure 3 is the axonometric view of the present invention after folding;

[0025] Figure 4 is Figure 1 the enlarged view of area A of

[0026] Figure 5 is Figure 2 the enlarged view of area B of

[0027] Figure 6 is Figure 2 the enlarged view of area C of

[0028] Figure 7 is the axonometric view of two sets of environmentally friendly dust removal devices for building construction after splicing;

[0029] In the figure: 1. Spray pipe; 2. Dust-proof net; 3. Winding shaft; 4. Return water box; 5. Nozzle; 6. Water inlet pipe; 7. Connection box; 8. Water supply pipe; 9. Housing; 10. Sealing slip ring; 11. First hinge seat; 12. Hollow pipe; 13. Second hinge seat; 14. Water supply hose; 15. Water inlet hole; 16. Protection frame; 17. Return water hole; 18. Drain pipe; 19. Clamping plate; 20. Support plate; 21. Expansion pad; 22. Communication box; 23. Roller brush; 24. First pulley; 25. Second pulley; 26. Transmission belt; 27. Guide rod; 28. Arc-shaped slot; 29. Spiral spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0031] As an embodiment of the present invention, as Figure 1-7 shown, an environmentally friendly dust removal device for building construction described in the present invention includes two groups of spray pipes 1 arranged in parallel. Dust-proof nets 2 are connected to the lower parts of the spray pipes 1. The lower ends of the dust-proof nets 2 are all connected to winding shafts 3. The winding shafts 3 are located in a water return box 4. Both ends of the winding shafts 3 pass through the water return box 4 and are rotatably connected to the water return box 4. Nozzles 5 that spray obliquely downward are arranged on one side of the two groups of spray pipes 1 close to each other. An inlet pipe 6 is arranged above the two groups of spray pipes 1. Both ends of the inlet pipe 6 are communicated with the two ends of the spray pipes 1 through connection boxes 7. A water supply pipe 8 passes through the water return box 4. A water supply bracket is connected between the water return box 4 and the inlet pipe 6. The inlet pipe 6 is communicated with the water supply pipe 8 through the water supply bracket.

[0032] When in use, first lift the inlet pipe 6 upward, and at the same time lift the spray pipes 1 to unfold the dust-proof net 2. The height of the dust-proof net 2 can be adjusted according to actual needs, and multiple groups of water supply pipes 8 can be spliced according to the length requirement of the dust-proof net 2, so as to increase the length of the dust-proof net 2. The positions of multiple groups of environmentally friendly dust removal devices for building construction can also be adjusted and arranged around the construction area to further improve the dust reduction treatment effect.

[0033] After the water supply pipe 8 is connected to the water supply, the water in the water supply pipe 8 enters the inlet pipe 6 through the water supply bracket, then flows into the two groups of spray pipes 1 through the connection box 7, and is sprayed out by the nozzles 5 that spray obliquely downward to form water mist, so as to purify the dust passing through the dust-proof net 2. The dust mixed with the water mist quickly falls, realizing the dust reduction treatment; after the water mist is sprayed onto the dust-proof net 2, it quickly converges and flows downward, so as to clean the dust attached to the dust-proof net 2, further improving the filtering effect of the dust-proof net 2 and facilitating the treatment of the cleaned dust.

[0034] In order to facilitate the adjustment of the water inlet effect of the inlet pipe 6, as an embodiment of the present invention, the water supply bracket includes two groups of sleeves 9 sleeved on the inlet pipe 6. Both ends of the sleeves 9 are hermetically and slidably connected to the inlet pipe 6 through sealing slip rings 10. The lower part of the sleeve 9 is hinged to a hollow pipe 12 through a first hinge seat 11. The lower end of the hollow pipe 12 is hinged and installed on a second hinge seat 13 on the upper part of the water return box 4. A water supply hose 14 is arranged in the hollow pipe 12. The upper end of the water supply hose 14 passes through the first hinge seat 11 and is communicated with the sleeve 9. The lower end of the water supply hose 14 passes through the second hinge seat 13 and the water return box 4 and is communicated with the water supply pipe 8;

[0035] A number of water inlet holes 15 are linearly distributed on the side surface of the inlet pipe 6. The distance between adjacent two groups of water inlet holes 15 gradually decreases from the middle of the inlet pipe 6 to both ends. One-way water inlet parts are arranged in the water inlet holes 15.

[0036] During use, first lift the water inlet pipe 6 upward to adjust the height of the spray pipe 1 and adjust the dust-proof net 2 to the required height. When the water inlet pipe 6 is lifted upward, one end of the hollow pipe 12 near the middle of the water inlet pipe 6 swings outward. As the lifting height of the water inlet pipe 6 increases, the two groups of hollow pipes 12 swing further toward the two ends of the water inlet pipe 6. During the swinging process of the hollow pipe 12, it will drive the housing 9 to swing toward the two ends of the water inlet pipe 6. The sealing slip ring 10 can ensure the sealing performance at both ends of the housing 9 to prevent the water body entering the housing 9 from overflowing. The water body entering the housing 9 enters the inside of the water inlet pipe 6 through the water inlet holes 15 provided on the water inlet pipe 6.

[0037] Since the spacing of the water inlet holes 15 on the water inlet pipe 6 gradually decreases from the middle of the water inlet pipe 6 to the two ends, it can increase the number of water inlet holes 15 corresponding to the housing 9 after the housing 9 moves toward the two ends of the water inlet pipe 6, thereby increasing the water inflow of the water inlet pipe 6. Thus, when the height of the dust-proof net 2 increases, the water inflow of the water inlet pipe 6 is increased, and the water spray amount of the spray pipe 1 is increased, so as to ensure the cleaning requirement of the dust-proof net 2 and the dust reduction requirement of a larger dust reduction space.

[0038] It should be noted that in the initial state, the hollow pipe 12 can be in a horizontal state, so as to reduce the space occupation of the environmental protection dust removal equipment for building construction and facilitate subsequent assembly, handling and storage. The one-way water inlet part adopted in the present invention can be a valve structure of a rubber membrane or a duckbill valve made of silica gel, etc.

[0039] In order to facilitate the treatment of the returned water body, as an embodiment of the present invention, the top edge of the return water box 4 is connected with a protective frame 16. The upper part of the return water box 4 is communicated with a return water hole 17, and the side of the return water box 4 is communicated with a drain pipe 18.

[0040] During use, the protective frame 16 is fixed on the top of the return water box 4 to protect the internal structure. After the sprayed water and dust fall into the return water box 4, the clear water is recovered into the return water box 4 through the return water hole 17 and then discharged through the drain pipe 18. It should be noted that the drain pipe 18 can be directly connected to the drainage facility, or multiple groups of drain pipes 18 can be connected to facilitate the drainage treatment of multiple groups of environmental protection dust removal equipment for building construction.

[0041] In order to ensure the stability of the dust-proof net 2 after it is unfolded, as an embodiment of the present invention, both ends of the winding shaft 3 are connected to the outer wall of the return water box 4 through torsion springs 29. On both sides of the lower part of the two groups of dust-proof nets 2, there are provided clamping plates 19 inclined toward the dust-proof net 2. The lower ends of the clamping plates 19 are hinged to support plates 20, and both ends of the support plates 20 are connected to the protective frame 16. An expansion pad 21 is provided between the clamping plates 19 and the support plates 20. A communication box 22 is fixedly connected to the outside of the protective frame 16. The expansion pad 21 and the water supply pipe 8 are respectively communicated with the communication box 22 through pipelines.

[0042] During use, when the dust-proof net 2 is stretched upward and unfolded, the winding shaft 3 can be driven to rotate, and the coil spring 29 is driven to wind; relying on the coil spring 29, it is convenient to automatically drive the winding shaft 3 to rotate back later and wind the dust-proof net 2;

[0043] After the water supply pipe 8 is connected to the water supply, the water body enters the expansion pad 21 through the communication box 22. Relying on the water supply pressure, the expansion pad 21 can be driven to expand, and the clamping plate 19 is pushed to move towards the dust-proof net 2; by the clamping plates 19 on both sides of the dust-proof net 2 moving towards the dust-proof net 2, the dust-proof net 2 can be clamped to prevent the coil spring 29 from pulling the dust-proof net 2 downward. At the same time, the inclined clamping plate 19 ensures that the dust-proof net 2 can still be pulled upward;

[0044] After use, the water supply of the water supply pipe 8 should be disconnected. After the water pressure in the water supply pipe 8 decreases, the expansion pad 21 automatically contracts and drives the clamping plate 19 away from the dust-proof net 2; then, relying on the coil spring 29 to drive the winding shaft 3 to rotate, the dust-proof net 2 is wound.

[0045] To facilitate the cleaning of the dust-proof net 2, as an embodiment of the present invention, roller brushes 23 are provided at the lower parts of the two sides of the two dust-proof nets 2 away from each other. Both ends of the roller brush 23 pass through the protective frame 16 and are rotatably connected to the protective frame 16. Both ends of the winding shaft 3 are connected to the first belt pulley 24 through one-way bearings. Both ends of the roller brush 23 are connected to the second belt pulley 25. The first belt pulley 24 and the second belt pulley 25 are driven by a transmission belt 26.

[0046] During use, when the dust-proof net 2 is stretched upward and unfolded, the winding shaft 3 can be driven to rotate. At this time, the first belt pulley 24 cannot drive the second belt pulley 25 to rotate through the one-way bearing, and the roller brush 23 can roll with the upward movement of the dust-proof net 2, thereby reducing the resistance of the roller brush 23 to the movement of the dust-proof net 2;

[0047] When the winding shaft 3 winds the dust-proof net 2, the dust-proof net 2 moves downward. At the same time, the first belt pulley 24 drives the second belt pulley 25 to rotate through the one-way bearing, thereby driving the roller brush 23 to rotate, and cleaning the dust and other impurities attached to the outer side of the dust-proof net 2 to the outside to ensure the cleaning effect.

[0048] To improve the moving stability of the dust-proof net 2, as an embodiment of the present invention, guide rods 27 fixed in the return water box 4 are provided below the two dust-proof nets 2. The two dust-proof nets 2 pass downward between the two guide rods 27 and then extend outward and are connected to the upper part of the winding shaft 3.

[0049] During use, the moving path of the dust-proof net 2 can be adjusted through the guide rod 27, and the deviation and wrinkling of the dust-proof net 2 during winding can be reduced, the service life can be extended, and the dust removal effect can be ensured.

[0050] To improve the stability of the spray pipe 1 after it moves downward, as an embodiment of the present invention, arc-shaped slots 28 corresponding to the spray pipe 1 are provided on the upper parts of the protective frames 16.

[0051] During use, the spray pipe 1 after moving downward can be placed in the arc-shaped slots 28, thereby ensuring the stability of the spray pipe 1.

[0052] It should be noted that during actual use, a rubber pad should be provided on the inner wall of the arc-shaped slots 28 to reduce the wear on the spray pipe 1.

[0053] To improve the stability of the water supply support, as an embodiment of the present invention, the first hinge seat 11 and the second hinge seat 13 are both damping hinge seats.

[0054] To facilitate the splicing of the environmental protection dust removal equipment for building construction, as an embodiment of the present invention, quick-connect flanges or plug connectors are connected to both ends of the water supply pipe 8.

[0055] During use, adjacent environmental protection dust removal equipment for building construction can be quickly connected through the quick-connect flanges or plug connectors provided at both ends of the water supply pipe 8, thereby facilitating the combined connection of multiple groups of environmental protection dust removal equipment for building construction.

[0056] When the present invention is in use, first place the return water box 4 around the construction area. According to the dust reduction range requirements, splice multiple groups of equipment through the quick-connect flanges or plug connectors at both ends of the water supply pipe 8 to form a circular or linear layout; then lift the water inlet pipe 6 upward, driving the spray pipe 1 to lift synchronously, and the dust-proof net 2 is stretched and unfolded from the winding shaft 3; adjust the water inlet pipe 6 to the required height. At this time, the hollow pipe 12 of the water supply support swings towards both ends of the water inlet pipe 6, and the sleeve 9 slides on the water inlet pipe 6 through the sealing slip ring 10.

[0057] After the water supply pipe 8 is filled with water, the water body enters the expansion pad 21 through the communication box 22. The expansion pad 21 expands and pushes the clamping plate 19, so that the clamping plate 19 clamps the dust-proof net 2 to prevent the dust-proof net 2 from retracting; the water enters the hollow pipe 12 through the water supply hose 14, and then flows into the water inlet pipe 6 through the sleeve 9; the water flow enters the two groups of spray pipes 1 through the connection box 7 and is sprayed out by the nozzles 5 inclined downward to form a water mist, covering the area of the dust-proof net 2; the water mist mixes with the dust passing through the dust-proof net 2, prompting the dust to fall quickly to achieve primary dust reduction; the water mist flushes the surface of the dust-proof net 2, converges the attached dust and flushes it downward to maintain the filtration efficiency of the dust-proof net 2; the sprayed water and the dust fall into the return water box 4 and are connected to the drainage facilities through the side drain pipe 18 or a parallel drainage system for multiple groups of equipment.

[0058] After the water source of the water supply pipe 8 is disconnected, the water pressure inside the expansion pad 21 decreases and contracts, and the clamping plate 19 releases the dust-proof net 2; the winding shaft 3 automatically rotates under the action of the coil spring 29, driving the dust-proof net 2 to wind downwards; when winding, the winding shaft 3 drives the first pulley 24 to rotate through the one-way bearing, and drives the roller brush 23 to rotate through the transmission belt 26; the rotation direction of the roller brush 23 cooperates with the moving direction of the dust-proof net 2 to brush the dust attached to the outer side of the dust-proof net 2 outwards, completing the cleaning;

[0059] After use, the spray pipe 1 falls into the arc-shaped slot 28 in the upper part of the protection frame 16, and the rubber pad in the slot reduces wear and ensures the stability of the spray pipe 1; the hollow pipe 12 of the water supply bracket returns to the horizontal state, reducing the overall occupied space of the equipment and facilitating handling and storage.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly dust removal device for building construction, characterized in that, It includes two groups of spray pipes (1) arranged in parallel. The lower parts of the spray pipes (1) are all connected to dust-proof nets (2). The lower ends of the dust-proof nets (2) are all connected to winding shafts (3). The winding shafts (3) are located in a water return box (4). The two ends of the winding shafts (3) pass through the water return box (4) and are rotatably connected to the water return box (4). Nozzles (5) for spraying obliquely downward are arranged on the side where the two groups of spray pipes (1) are close to each other. An inlet pipe (6) is arranged above the two groups of spray pipes (1). Both ends of the inlet pipe (6) are communicated with the two ends of the spray pipes (1) through connection boxes (7). A water supply pipe (8) passes through the water return box (4). A water supply support is connected between the water return box (4) and the inlet pipe (6). The inlet pipe (6) is communicated with the water supply pipe (8) through the water supply support.

2. The environmental protection dust removal equipment for building construction according to claim 1, characterized in that, The water supply support includes two groups of sheaths (9) sleeved on the inlet pipe (6). Both ends of the sheaths (9) are hermetically and slidably connected to the inlet pipe (6) through sealing slip rings (10). The lower part of the sheaths (9) is hinged to a hollow pipe (12) through a first hinge seat (11). The lower end of the hollow pipe (12) is hinged and installed on a second hinge seat (13) on the upper part of the water return box (4). A water supply hose (14) is arranged in the hollow pipe (12). The upper end of the water supply hose (14) passes through the first hinge seat (11) and is communicated with the sheath (9). The lower end of the water supply hose (14) passes through the second hinge seat (13), the water return box (4) and is communicated with the water supply pipe (8); Several groups of water inlet holes (15) are linearly distributed on the side surface of the inlet pipe (6). The distance between adjacent two groups of water inlet holes (15) gradually decreases from the middle of the inlet pipe (6) to both ends. One-way water inlet parts are arranged in the water inlet holes (15).

3. An environmentally friendly dust removal device for building construction according to claim 2, characterized in that, A protective frame (16) is connected to the top edge of the water return box (4). A water return hole (17) is communicated with the upper part of the water return box (4). A drain pipe (18) is communicated with the side surface of the water return box (4).

4. An environmentally friendly dust removal device for building construction according to claim 3, characterized in that, Both ends of the winding shaft (3) are connected to the outer wall of the water return box (4) through torsion springs (29). Clamping plates (19) inclined towards the dust-proof nets (2) are arranged on both sides of the lower parts of the two groups of dust-proof nets (2). The lower ends of the clamping plates (19) are hinged to support plates (20). Both ends of the support plates (20) are connected to the protective frame (16). An expansion pad (21) is arranged between the clamping plates (19) and the support plates (20). A communication box (22) is fixedly connected to the outside of the protective frame (16). The expansion pad (21) and the water supply pipe (8) are respectively communicated with the communication box (22) through pipelines.

5. An environmental protection dust removal device for building construction according to claim 4, characterized in that, Roller brushes (23) are arranged on the lower parts of the two groups of dust-proof nets (2) on the sides far away from each other. Both ends of the roller brushes (23) pass through the protective frame (16) and are rotatably connected to the protective frame (16). Both ends of the winding shaft (3) are connected to first belt pulleys (24) through one-way bearings. Both ends of the roller brushes (23) are connected to second belt pulleys (25). The first belt pulleys (24) and the second belt pulleys (25) are driven by a transmission belt (26).

6. An environmental protection dust removal device for building construction according to claim 5, characterized in that, Guide rods (27) fixed in the water return box (4) are arranged below the two groups of dust-proof nets (2). The two groups of dust-proof nets (2) pass downward between the two groups of guide rods (27) and then extend outward and are connected to the upper parts of the winding shafts (3).

7. An environmentally friendly dust removal device for building construction according to claim 6, characterized in that, An arc-shaped slot (28) corresponding to the spray pipe (1) is provided at the upper part of the protective frame (16).

8. An environmentally friendly dust removal device for building construction according to claim 7, characterized in that, Both the first hinge seat (11) and the second hinge seat (13) are damping hinge seats.

9. An environmental protection dust removal device for building construction according to claim 8, characterized in that, Both ends of the water supply pipe (8) are connected with quick-connect flanges or plug connectors.

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