An environmentally friendly dust removal device for construction

Abstract

This invention discloses an environmentally friendly dust suppression device for construction, characterized by comprising a water pump, an air pump, and an integrated water-air pipe. The integrated water-air pipe includes an inner cylinder and an outer cylinder, forming an annular water delivery chamber between the inner and outer cylinders. The integrated water-air pipe also includes an air delivery connector, a water delivery connector, an upper spray pipe, a lower water pipe, and a lower air pipe. The upper spray pipe is connected to the water delivery chamber and is equipped with multiple sets of atomizing nozzles. The lower water pipe is connected to the water delivery chamber, and the lower air pipe is connected to the inner cylinder. The lower air pipe is equipped with multiple sets of air inlets, and an annular lower nozzle is arranged along its outer periphery on the outside of the air inlets. When the device is working, the upper spray pipe sprays fine water mist to form a water mist wall, while the lower air pipe draws air, creating negative pressure at the edge of the construction area. The multiple sets of lower nozzles on the outer periphery of the lower air pipe spray water downwards, forming an annular water cover. Through the combined effects of the water mist wall, negative pressure suppression, and spray settling, a better dust suppression effect can be achieved.

Description

Technical Field

[0001] This invention relates to an environmentally friendly dust removal device, and more specifically, to an environmentally friendly dust removal device for building construction. Background Technology

[0002] With the continuous advancement of urbanization, a large number of construction projects are underway in various places every day, and construction inevitably generates noise and dust.

[0003] To prevent dust generated during construction from polluting the surrounding environment, dust removal equipment is usually installed at construction sites.

[0004] Existing dust suppression equipment often relies on spraying water mist to reduce dust, but its dust suppression effect is not very good and needs to be improved. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an environmentally friendly dust removal device for building construction, which has a better dust reduction effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An environmentally friendly dust removal device for building construction includes a water pump, an air pump, and an integrated water-air pipe. The integrated water-air pipe includes an inner cylinder and an outer cylinder arranged coaxially, forming an annular water delivery chamber between the inner and outer cylinders. The integrated water-air pipe also includes an air delivery connector, a water delivery connector, an upper spray pipe, a lower water pipe, and a lower air pipe. One end of the air delivery connector is connected to the inner cylinder, and the other end is connected to the air pump. One end of the water delivery connector is connected to the outer cylinder, and the other end is connected to the water pump. The upper spray pipe is arranged parallel above the outer cylinder and is connected to the water delivery chamber. The upper spray pipe is equipped with multiple sets of atomizing nozzles. The lower water pipe and the lower air pipe are arranged parallel below the outer cylinder. The lower water pipe is connected to the water delivery chamber, and the lower air pipe is connected to the inner cylinder. The lower air pipe is equipped with multiple sets of downward-facing air inlets. An annular lower nozzle is arranged on the outer side of the air inlet. Multiple nozzles are arranged along the outer circumference of the bottom of the lower nozzle. The bottom of the outer cylinder is equipped with support legs.

[0008] As a preferred embodiment: the number of the integrated water-air pipes is at least two sets; an annular and elastic sealing ring is installed at the end of the water delivery chamber, located between the inner and outer cylinders; the ends of the inner and outer cylinders are respectively provided with a first opening and a second opening; the rear outer wall of the sealing ring is sealed to the inner wall of the first opening, and the front outer wall of the sealing ring is sealed to the inner wall of the second opening; the thickness of the middle part of the sealing ring is greater than the thickness of its two ends, so that when the middle part of the sealing ring is subjected to outward pressure, it will adhere tightly to the inner wall of the outer cylinder, thereby sealing the water delivery chamber; a pressing plate that can move back and forth is provided inside the sealing ring; the center of the pressing plate has a hollow structure; a spring for driving the pressing plate forward is provided at the rear end of the pressing plate; the pressing plate... The front end is connected to a push rod arranged along its moving direction. The rear part of the extrusion plate is connected to a movable plate. The end of the inner cylinder is provided with a movable cavity. The inner diameter of the movable cavity is larger than the inner diameter of the inner cylinder. The outer diameter of the movable plate is smaller than the inner diameter of the movable cavity, so that the movable plate can move back and forth in the movable cavity. When the movable plate moves forward, its edge can press against the inner edge of the movable cavity, thereby sealing the inner cylinder. One end of the outer cylinder is provided with a plug interface communicating with the water delivery cavity, and the other end of the outer cylinder is provided with a plug post communicating with the water delivery cavity. The plug post is used to insert into the plug interface. One of the at least two sets of integrated water and air pipes has a water delivery connector and an air delivery connector. When the push rod is not subjected to inward extrusion, the end of the push rod protrudes from the outer cylinder. The movable plate presses against the front contact edge of the movable cavity, and the extrusion plate contacts the middle of the sealing ring.

[0009] As a preferred embodiment, the two ends of the outer cylinder are respectively provided with mutually cooperating buckles and locking blocks.

[0010] As a preferred embodiment, sealing gaskets are provided on both ends of the outer cylinder.

[0011] As a preferred embodiment: a hollow connecting block is provided inside the inner cylinder, the edge of the connecting block is fixed to the inner wall of the inner cylinder, a guide tube and a guide rod are provided between the connecting block and the movable plate, one end of the guide tube is connected to the connecting block, one end of the guide rod is inserted into the guide tube, and the other end is connected to the movable plate.

[0012] As a preferred embodiment, the middle sections of the inner cylinder, outer cylinder, upper spray pipe, lower water pipe, and lower air pipe are all flexible hose sections, making the entire water-air integrated pipe bendable.

[0013] Compared with existing technologies, the advantages of this invention are as follows: When the environmentally friendly dust removal device is working, it sprays fine water mist through the upper spray pipe. The water mist falls naturally under the action of gravity, thus forming a water mist wall at the edge of the construction area. The water mist wall can prevent dust from spreading outward and also play a role in dust suppression. At the same time, air is drawn in through the lower air pipe, creating a negative pressure at the edge of the construction area. The atmospheric pressure causes the air around the lower air pipe to flow towards its air inlet, causing the dust in the water mist wall to gradually gather in the lower air pipe. Multiple nozzles at the air inlet of the lower air pipe spray water downward, forming a ring-shaped water cover that covers the air inlet. This not only sprays water onto the dust approaching the air inlet, thus suppressing dust, but also prevents dust from contacting the air inlet and avoiding the formation of sludge that can clog the air inlet. Through the combined effects of the water mist wall, negative pressure suppression, and spray settling, a better dust suppression effect can be achieved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of the Type I water-air integrated pipe in Example 1;

[0015] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0016] Figure 3 for Figure 1 Enlarged view of part B in the image;

[0017] Figure 4 This is a schematic diagram of the internal structure of the Type II water-air integrated pipe in Example 2;

[0018] Figure 5 This is a schematic diagram of the docking structure for Type I and Type II integrated water-gas pipes;

[0019] Figure 6 for Figure 5 Enlarged view of section C in the image;

[0020] Figure 7 This is a schematic diagram of the dust suppression device combination in Example 1;

[0021] Figure 8 This is a schematic diagram of the internal structure of the integrated water and air pipe in Example 2;

[0022] Figure 9 This is a schematic diagram of the dust suppression device combination in Example 2.

[0023] Explanation of reference numerals in the attached drawings: 1. Outer cylinder; 2. Inner cylinder; 3. Upper spray pipe; 4. Upper connecting water pipe; 5. Atomizing nozzle; 6. Lower water pipe; 7. Lower connecting water pipe; 8. Lower air pipe; 9. Lower connecting air pipe; 10. Air inlet; 11. Lower nozzle; 12. Water guide pipe; 13. Support leg; 14. First opening; 15. Second opening; 16. Sealing ring; 17. Squeezing plate; 18. Movable plate; 19. Top rod; 20. Guide rod; 21. Guide tube; 22. Connecting block; 23. Spring; 24. Insertion interface; 25. Water supply chamber; 26. Insertion post; 27. Sealing gasket; 28. Locking block; 29. ​​Buckle; 30. Air supply connector; 31. Water supply connector; 32. Air pump; 33. Water supply pipe; 34. Air pump; 35. Suction pipe; 36. Hose section. Detailed Implementation Example 1:

[0024] Reference Figure 1 , Figure 2 , Figure 3 and Figure 7 An environmentally friendly dust removal device for building construction includes a water pump, an air pump 3432, and an integrated water and air return pipe.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the water-air integrated pipe includes an inner cylinder 2 and an outer cylinder 1 arranged coaxially. The outer cylinder 1 is fitted around the outside of the inner cylinder 2. The length of the inner cylinder 2 is less than the length of the outer cylinder 1, and the outer diameter of the inner cylinder 2 is less than the inner diameter of the outer cylinder 1, thereby forming an annular water delivery chamber 25 between the inner cylinder 2 and the outer cylinder 1. The water-air integrated pipe also includes an air delivery connector 30, a water delivery connector 31, an upper spray pipe 3, a lower water pipe 6, and a lower air pipe 8. One end of the air delivery connector 30 is connected to the inner cylinder 2, and the other end of the air delivery connector 30 is connected to an air pump 3432. The air pump 3432 is used to extract air from the inside of the inner cylinder 2. One end of the water delivery connector 31 is connected to the water delivery chamber 25, and the other end of the water delivery connector 31 is connected to a water pump. The water pump is used to deliver water into the water delivery chamber 25.

[0026] Support legs 13 are provided at the bottom of the outer cylinder.

[0027] The upper spray pipe 3 is arranged parallel above the outer cylinder 1. The upper spray pipe 3 is connected to the water supply chamber 25 through the upper connecting water pipe 4. Multiple sets of atomizing nozzles 5 are provided on the upper spray pipe 3. The lower water pipe 6 and the lower air pipe 8 are arranged parallel below the outer cylinder 1. The lower water pipe 6 is connected to the water supply chamber 25 through the lower connecting water pipe 7. The lower air pipe 8 is connected to the inner cylinder 2 through the lower connecting air pipe 9. Multiple sets of downward-facing air inlets 10 are provided on the lower air pipe 8. The air inlets 10 are connected to the inside of the lower air pipe 8. An annular lower nozzle 11 is installed on the outside of the air inlet 10. Multiple sets of nozzles are opened along the circumference of the bottom of the lower nozzle 11. The lower nozzle 11 is connected to the lower water pipe 6 through the water guide pipe 12.

[0028] This environmentally friendly dust removal device needs to be installed at the edge of the construction area. When the device is working, a water pump supplies water to the water delivery chamber 25. One stream of water from the water delivery chamber 25 flows through the upper connecting water pipe 4 into the upper spray pipe 3, and is then sprayed out as water mist from the atomizing nozzle 5 of the upper spray pipe 3. The water mist falls naturally under gravity, thus forming a water mist wall at the edge of the construction area. This water mist wall can prevent dust from spreading outwards and also serves to reduce dust. Another stream of water from the water delivery chamber 25 flows through the lower connecting water pipe 7 into the lower water pipe 6, and then through the guide pipe 12 into the lower nozzle 11, where it is sprayed out from the spray assembly. Simultaneously, an air pump 3432 draws air from inside the inner cylinder 2, causing... The air pressure inside the inner cylinder 2 and the lower air pipe 8 decreases, creating a pressure difference with the outside air. The atmospheric pressure causes the air around the lower air pipe 8 to flow towards its air inlet 10, causing the dust in the water mist wall to gradually gather at the air inlet 10 of the lower air pipe 8. Furthermore, because multiple sets of nozzles around the air inlet 10 spray water downwards, the sprayed water forms a ring-shaped water cover that covers the air inlet 10. This not only sprays water onto the dust approaching the air inlet 10, thus reducing dust, but also prevents the dust from contacting the air inlet 10, avoiding the formation of sludge and blockage at the air inlet 10. Through the combined effects of the water mist wall's containment, negative pressure containment, and spray settling, a better dust reduction effect can be achieved.

[0029] Reference Figure 1 and Figure 4 In this embodiment, the number of integrated water-gas pipes is at least two sets, at least one set of integrated water-gas pipes is a type I integrated water-gas pipe, and at least one set of integrated water-gas pipes is a type II integrated water-gas pipe.

[0030] The Type I water-gas integrated pipe has two additional components compared to the Type II water-gas integrated pipe: a water supply connector 31 and a gas supply connector 30. The rest of the structure is exactly the same.

[0031] Reference Figure 2 Taking the Type I water-air integrated pipe as an example, an annular and elastic sealing ring 16 is installed at the end of the water delivery chamber 25 of each water-air integrated pipe and between the inner cylinder 2 and the outer cylinder 1. The ends of the inner cylinder 2 and the outer cylinder 1 are respectively provided with a first opening 14 and a second opening 15. The rear outer wall of the sealing ring 16 is sealed to the inner wall of the first opening 14, and the front outer wall of the sealing ring 16 is sealed to the inner wall of the second opening 15.

[0032] The thickness of the middle part of the sealing ring 16 is greater than that of its two ends. When the middle part of the sealing ring 16 is not compressed, there is a distance between its outer wall and the inner wall of the outer cylinder 1. When the middle part of the sealing ring 16 is compressed outward, its inner wall will stick to the inner wall of the outer cylinder 1, thereby sealing the water delivery chamber 25. A compression plate 17 that can move back and forth is provided inside the sealing ring 16. The center of the compression plate 17 has a hollow structure, and the edge of the compression plate 17 contacts the inner wall of the sealing ring 16.

[0033] When the extrusion disc 17 moves back and forth, it will contact or separate from the middle of the sealing ring 16. When the extrusion disc 17 moves to contact the middle of the sealing ring 16, it will squeeze the middle of the sealing ring 16 outward, so that the outer wall of the sealing ring 16 is pressed against the inner wall of the outer cylinder 1, blocking the water delivery chamber 25. When the extrusion disc 17 moves to separate from the middle of the sealing ring 16, the outer wall of the sealing ring 16 will again have a distance between it and the inner wall of the outer cylinder 1, so that the water delivery chamber 25 is open.

[0034] A spring 23 for driving the extrusion disc 17 forward is provided at its rear end. A push rod 19 is connected to the front end of the extrusion disc 17 along its moving direction. A movable disc 18 is connected to the rear end of the extrusion disc 17. A movable cavity is provided at the end of the inner cylinder 2. The inner diameter of the movable cavity is larger than the inner diameter of the inner cylinder 2, and the inner diameter of the movable cavity is larger than the diameter of the first opening 14, so that the front and rear parts of the movable cavity form an annular contact edge. The outer diameter of the movable disc 18 is smaller than the inner diameter of the movable cavity, so that the movable disc 18 can move back and forth within the movable cavity.

[0035] Spring 23 is disposed in the movable cavity, and the two ends of spring 23 are in contact with the rear contact edge of the movable cavity and the rear surface of the movable disk 18, respectively, and spring 23 is in a compressed state.

[0036] The movable disc 18 is made of rubber, which has a certain degree of elasticity and can fit well with the front contact edge of the movable cavity, thus ensuring a seal. When the movable disc 18 moves forward, its edge can press against the front contact edge of the movable cavity, thereby sealing the inner cylinder 2.

[0037] At both ends of the outer cylinder 1, there are interlocking buckles 29 and locking blocks 28. Sealing gaskets 27 are provided on both ends of the outer cylinder 1.

[0038] In the initial state before assembly, when the push rod 19 is not compressed inward, the spring 23 is in the extended state, the end of the push rod 19 protrudes from the outer cylinder 1, the movable disc 18 presses against the front contact edge of the movable cavity, and the compression disc 17 contacts the middle of the sealing ring 16. At this time, the inner cylinder 2 and the water delivery cavity 25 are both blocked and in the closed state.

[0039] An insertion interface 24 communicating with the water delivery chamber 25 is provided at one end of the outer cylinder 1, and an insertion post 26 communicating with the water delivery chamber 25 is provided at the other end of the outer cylinder 1. The insertion post 26 is used to be inserted into the insertion interface 24.

[0040] Reference Figure 5 and Figure 6During assembly, align one end of the Type I water-air integrated pipe with one end of the Type II water-air integrated pipe, aligning the ends of the two sets of push rods 19. Then, forcefully squeeze the two sets of water-air integrated pipes together. At this time, the two sets of push rods 19 press against each other and simultaneously retract into the sealing sleeve. The push rods 19 drive the compression plate 17 and the movable plate 18 to move backward synchronously. The compression plate 17 separates from the middle part of the sealing ring 16, and the movable plate 18 separates from the front contact edge of the movable cavity, thereby making the water delivery cavity 25 and the inner cylinder 2 open. During this process, the spring 23 is compressed and stores energy. When the insertion post 26 is fully inserted into the insertion interface 24, pull the buckle 29 to lock the locking block 28, thus connecting and assembling the Type I water-air integrated pipe and the Type II water-air integrated pipe together. At this time, the sealing gasket 27 is compressed and deformed, thereby ensuring the sealing of the water and air passages at the connection of the two pipe sections.

[0041] In other embodiments, a basic level of sealing can also be achieved by the interference fit between the plug post 26 and the plug interface 24 and by improving the smoothness of the end face of the outer cylinder 1.

[0042] The above operations can connect the Type I water-gas integrated pipe and the Type II water-gas integrated pipe into one unit, and connect the gas and water circuits of the two sections of the water-gas integrated pipe. The gas and water circuits of the unconnected end are kept in the off state to avoid water and gas leakage. No additional tools are needed to seal the unconnected end, simplifying the assembly work.

[0043] When disassembling the two water-air integrated tubes, reverse the buckle 29 to separate it from the locking block 28, and then pull the water-air integrated tube to disengage the plug post 26 from the plug interface 24. Subsequently, under the elastic force of the spring 23, the two sets of water-air integrated tubes are automatically popped open and return to their initial state.

[0044] The combined application of one end of the Type I water-gas integrated pipe and the Type II water-gas integrated pipe is shown in [the following text is incomplete and requires further context]. Figure 7 The system allows for free selection of one end of the Type I water-air integrated pipe and the number and arrangement direction of the Type II water-air integrated pipes. A water supply pipe connects the water connector to the water pump, and an air extraction pipe connects the air supply connector to the air pump. This allows the dust removal device to be freely expanded and adapted to construction sites of varying sizes and dimensions.

[0045] In this embodiment: a hollowed-out connecting block 22 is provided inside the inner cylinder 2. The edge of the connecting block 22 is fixed to the inner wall of the inner cylinder 2. A guide tube 21 and a guide rod 20 are provided between the connecting block 22 and the movable disk 18. One end of the guide tube 21 is connected to the connecting block 22, and one end of the guide rod 20 is inserted into the guide tube 21, while the other end is connected to the movable disk 18. This structure allows the guide rod 20 to slide back and forth within the guide tube 21. The guide rod 20 provides additional stability to the movable disk 18, ensuring that the movable disk 18 moves in a straight line, allowing the spring 23 to effectively store and release its elastic force. Example 2:

[0046] Reference Figure 8 The difference between this embodiment and embodiment one is that in this embodiment, the middle sections of the inner cylinder 2, outer cylinder 1, upper spray pipe 3, lower water pipe 6 and lower air pipe 8 are all flexible hose sections 36, which makes the water-air integrated pipe bendable as a whole.

[0047] Reference Figure 9 Because the middle section of the water-air integrated pipe can be bent, after the first and second ends of multiple sets of water-air integrated pipes are connected, each set of water-air integrated pipes can be bent so that the combined water-air pipes can surround the perimeter of the construction area, which can better adapt to the size and shape of the construction area, and can completely surround and settle the dust in the construction area, thus achieving a better dust reduction effect.

[0048] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A dust removal device for construction environmental protection, characterized in that: The utility model provides a water pump, air pump and water -gas integrated pipe, water -gas integrated pipe includes the inner tube and outer tube of coaxial arrangement, the annular water conveying chamber is formed between the inner tube and outer tube, water -gas integrated pipe still includes gas delivery joint, water delivery joint, upper spray pipe, lower water pipe and lower air pipe, one end of gas delivery joint communicates with the inner tube, the other end of gas delivery joint is connected with air pump, one end of water delivery joint communicates with the outer tube, the other end of water delivery joint is connected with water pump, upper spray pipe is arranged in the upper of outer tube in parallel, upper spray pipe communicates with water conveying chamber, be provided with a plurality of groups of atomizing spray head on upper spray pipe, lower water pipe and lower air pipe are arranged in the lower of outer tube in parallel, lower water pipe communicates with water conveying chamber, lower air pipe communicates with the inner tube, be provided with a plurality of groups of downward air inlet on lower air pipe, the outside of air inlet is provided with annular lower spray head, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a 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lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a 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its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with a plurality of groups of nozzle along its outer periphery, the bottom of lower spray head is provided with 2. The environmentally friendly dust removal device for building construction according to claim 1, characterized in that: ​ 3. The environmentally friendly dust removal device for building construction according to claim 2, characterized in that: ​ 4. The environmentally friendly dust removal device for building construction according to claim 2, characterized in that: ​ 5. The environmentally friendly dust removal device for building construction according to claim 1, characterized in that: The inner tube, the outer tube, the upper spray pipe, the lower water pipe and the middle section of the lower air pipe are all hose sections, so that the water-air integrated pipe is bendable as a whole.

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