A spiral spray dust removal device

Abstract

This invention discloses a spiral spray dust removal device, relating to the technical field of dust removal equipment. It includes a water tank; multiple spray boxes arranged side-by-side on the top surface of the water tank, with adjacent spray boxes connected; an air inlet box located outside the spray boxes and connected to them; an exhaust circulation box assembly located outside the spray boxes and connected to them; a lower spiral tube connected to the water tank, located on the bottom surface of the spray boxes; an upper spiral tube movably mounted on the end of the lower spiral tube away from the bottom surface of the spray boxes, connected to it; and multiple lower and upper spray nozzles respectively mounted on the outer peripheral walls of the lower and upper spiral tubes. The air inlet box includes a housing, with an adjusting roller rotatably mounted on the open side wall of the housing. This invention has advantages such as avoiding clogging and allowing for adjustment of the spray range as needed.

Description

Technical Field

[0001] This invention relates to the field of dust removal equipment technology, specifically to a spiral spray dust removal device. Background Technology

[0002] Some existing spray dust removal devices allow waste gas to be discharged directly after being treated by spraying. When there are many particulate impurities in the waste gas, the waste gas can only remain in the spray chamber for a long time for spraying. The particulate impurities in the waste gas can easily clog the spray head. At the same time, the position of the spray head in the spray dust removal device is fixed and the spray range cannot be adjusted as needed, thus affecting the spraying effect on the waste gas. Summary of the Invention

[0003] To address the aforementioned technical shortcomings, the present invention aims to provide a spiral spray dust removal device that has advantages such as avoiding clogging and allowing for adjustment of the spray range as needed.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a spiral spray dust removal device, comprising: Water tank; Spray boxes are provided, and multiple spray boxes are arranged side by side on the top surface of the water tank, with adjacent spray boxes connected to each other. An air intake box is located outside the spray box and is connected to the spray box. An exhaust circulation box assembly is located outside the spray box and is connected to the spray box. The spray box has a lower spiral tube connected to the water tank on its bottom surface. An upper spiral tube is movably installed at the end of the lower spiral tube away from the bottom surface of the spray box. The lower spiral tube is connected to the upper spiral tube. Multiple lower nozzles and multiple upper nozzles are respectively installed on the outer peripheral walls of the lower spiral tube and the upper spiral tube. The air intake box includes a box body. The side wall of the box body away from the spray box is open. The open side wall of the box body is connected to the spray box near the end of the box body. An adjusting roller is rotatably installed inside the open side wall of the box body. The exhaust circulation box assembly includes an exhaust box, which is connected to a spray box located away from the box body. The exhaust box is equipped with multiple filter boxes corresponding to the positions of the spray box.

[0005] Preferably, the water tank is equipped with a spray liquid pump, and the outlet of the spray liquid pump is equipped with multiple spray pipes that are connected to the lower spiral tubes one by one, so that the spray water can be sprayed out from each lower spiral tube through the spray liquid pump and the spray pipes to achieve spray dust removal of the exhaust gas.

[0006] Preferably, the spray box has an inlet groove and an outlet groove on its opposite side walls, and two adjacent spray boxes are connected through the inlet groove and the outlet groove. The spray box closer to the box body is connected to the box body through the inlet groove, and the spray box closer to the exhaust box is connected to the exhaust box through the outlet groove. This allows the exhaust gas to enter each spray box sequentially through the inlet groove and the outlet groove to complete the spray treatment, thereby improving the spray treatment effect of the exhaust gas.

[0007] Preferably, a push cylinder is installed at the top of the spray box, a rotary motor is installed on the piston rod of the push cylinder, a sealing disc is installed on the output shaft of the rotary motor, and the end of the upper spiral tube away from the lower spiral tube is installed on the bottom surface of the sealing disc. According to the air intake needs, the position can be adjusted by moving the rotary motor and the sealing disc in the vertical direction through the push cylinder. At the same time, the rotary motor can drive the sealing disc and the upper spiral tube to rotate, so that the upper spiral tube is at a height outside the lower spiral tube, thereby spraying the exhaust gas entering the inlet tank.

[0008] Preferably, an adjusting plate seat is movably inserted into both the inlet and outlet channels. A sealing plate is provided on the top surface of the adjusting plate seat. The end of the sealing plate away from the adjusting plate seat is movably inserted into the top surface of the inlet channel or the top surface of the outlet channel. A slot is provided on the side wall of the adjusting plate seat facing the spray box. An annular body adapted to the slot is provided on the outer peripheral wall of the sealing disc. The annular body is movably disposed in the slot. When the position is adjusted by moving the rotating motor and the sealing disc in the vertical direction by pushing the cylinder, the adjusting plate seat can slide in the inlet or outlet channel. At the same time, when the rotating motor drives the sealing disc and the upper spiral tube to rotate, the annular body can rotate in the slot, thereby enabling the sealing disc to move in the vertical direction and rotate in the horizontal direction simultaneously.

[0009] Preferably, a drive motor is embedded in the side wall of the air intake box, and an adjusting roller is coaxially mounted on the output shaft of the drive motor. An arc-shaped plate is connected to the outside of the adjusting roller via a connecting rod. The arc-shaped plate is rotatably mounted inside the opening side wall of the inlet groove. The arc-shaped plate has a three-quarter arc structure, and its diameter is adapted to the opening height of the inlet groove. The outer peripheral wall of the arc-shaped plate abuts against the inner walls of the upper and lower openings of the inlet groove. According to the air intake needs, the drive motor can be started to drive the adjusting roller and the arc-shaped plate to rotate. When the arc-shaped plate is located in different positions inside the opening side wall of the inlet groove, the exhaust gas intake can be opened or closed.

[0010] Preferably, the inner cavity of the spray box is cylindrical and matches the diameter of the sealing disc. The outer peripheral wall of the sealing disc is in contact with the inner peripheral wall of the spray box, which facilitates the entry of exhaust gas into the inner cavity of the spray box and improves the spray treatment effect.

[0011] Preferably, the exhaust box is connected to each filter box via a return air pipe. Each filter box is equipped with a guide air pipe that connects to the corresponding spray box. The guide air pipe is located inside the spray box near the inlet tank end, which facilitates the flow of the exhaust gas after spray treatment in the spray box back to the corresponding filter box for filtration and then spray treatment again as needed, thereby improving the spray treatment effect of the exhaust gas.

[0012] Preferably, the number of spray boxes is greater than the number of filter boxes, so that the exhaust gas after being sprayed in the spray box can be filtered again in the corresponding filter box after flowing through the return gas pipe, and then sprayed again as needed, thereby improving the spray treatment effect of the exhaust gas.

[0013] Preferably, the height of the inlet trough is the same as the height of the outlet trough, and the sum of the lengths of the lower spiral tube and the upper spiral tube is adapted to the height of the inlet trough. This allows for position adjustment by pushing the cylinder to drive the rotating motor and the sealing disc to move vertically according to the air intake requirements. At the same time, the rotating motor drives the sealing disc and the upper spiral tube to rotate, so that the upper spiral tube is located at a height outside the lower spiral tube, thereby enabling spray treatment of the exhaust gas entering the inlet trough.

[0014] The beneficial effects of this invention are as follows: 1. The position is adjusted by starting the cylinder to drive the rotating motor and the sealing disc to move in the vertical direction; at the same time, the rotating motor can drive the sealing disc and the upper spiral tube to rotate, adjusting the height of the upper spiral tube outside the lower spiral tube, that is, the length of the upper spiral tube rotating into the lower spiral tube, thereby achieving the effect of adjusting the spray area of ​​the exhaust gas entering the inlet tank.

[0015] 2. The exhaust gas after spray treatment enters the exhaust box and can then flow through the return gas pipe to the corresponding filter box for filtration as needed, before re-entering the spray box for spray treatment. This avoids clogging of the upper and lower nozzles and improves the spray treatment effect on the exhaust gas. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a spiral spray dust removal device provided in an embodiment of the present invention.

[0018] Figure 2 for Figure 1Enlarged schematic diagram of the structure at point A in the middle.

[0019] Figure 3 This is a schematic diagram of the internal structure of the spray box of a spiral spray dust removal device provided in an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the inlet tank position of a spiral spray dust removal device provided in an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the outlet trough position of a spiral spray dust removal device provided in an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the slot position of a spiral spray dust removal device provided in an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the sealing disc structure of a spiral spray dust removal device provided in an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram showing the location of the spray liquid pump in a spiral spray dust removal device provided in an embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram showing the positions of the upper and lower spiral tubes of a spiral spray dust removal device provided in an embodiment of the present invention.

[0026] Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point B.

[0027] Figure 11 This is a schematic diagram of the connection structure between the annulus and the adjusting plate seat of a spiral spray dust removal device provided in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Water tank; 11. Spray liquid pump; 12. Spray pipe; 2. Spray box; 21. Sealing plate; 211. Inlet trough; 212. Outlet trough; 22. Lower spiral tube; 221. Lower nozzle; 23. Upper spiral tube; 231. Upper nozzle; 24. Push cylinder; 25. Rotary motor; 26. Sealing disc; 261. Circular ring; 27. Adjusting plate seat; 271. Slot; 3. Air inlet box; 31. Box body; 32. Adjusting roller; 33. Drive motor; 34. Arc plate; 341. Connecting rod; 4. Exhaust circulation box assembly; 41. Exhaust box; 411. Return air pipe; 42. Filter box; 421. Air guide pipe. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1 like Figures 1 to 3 , Figures 8 to 10 As shown, the present invention provides a spiral spray dust removal device, including a water tank 1; multiple spray boxes 2 are arranged side by side on the top surface of the water tank 1, and adjacent spray boxes 2 are connected; an air inlet box 3 is located outside the spray box 2 and is connected to the spray box 2; an exhaust circulation box assembly 4 is located outside the spray box 2 and is connected to the spray box 2; a lower spiral pipe 22 connected to the water tank 1 is arranged on the bottom surface inside the spray box 2, and an upper spiral pipe 23 is movably arranged in the end of the lower spiral pipe 22 away from the bottom surface of the spray box 2. The spiral tube 22 is connected to the upper spiral tube 23. Multiple lower nozzles 221 and multiple upper nozzles 231 are respectively provided on the outer peripheral walls of the lower spiral tube 22 and the upper spiral tube 23. The air inlet box 3 includes a box body 31. The side wall of the box body 31 away from the end of the spray box 2 is open. The open side wall of the box body 31 is connected to the spray box 2 near the end of the box body 31. An adjusting roller 32 is rotatably arranged inside the open side wall of the box body 31. The exhaust circulation box assembly 4 includes an exhaust box 41. The exhaust box 41 is connected to the spray box 2 away from the end of the box body 31. Multiple filter boxes 42 corresponding to the positions of the spray box 2 are provided on the exhaust box 41.

[0031] External exhaust gas enters the housing 31 through the open side wall of the housing 31 (the position of the adjusting roller 32 can be rotated and adjusted inside the open side wall of the housing 31 to achieve the intake or closure of exhaust gas); the exhaust gas inside the housing 31 enters the spray box 2, and the spray water is sprayed out from the water tank 1 through the lower nozzle 221 on the lower spiral tube 22 and the upper nozzle 231 on the upper spiral tube 23, thereby spraying the exhaust gas (the position of the upper spiral tube 23 can also be adjusted inside the lower spiral tube 22 to adjust the spray range); the exhaust gas treated by spraying in the spray box 2 enters the exhaust box 41 for discharge (or enters the filter box 42 after passing through the exhaust box 41 for filtration, and then enters the corresponding position of the spray box 2 for spraying again); at the same time, a drain hole connected to the water tank 1 can be provided on the bottom surface of the spray box 2, and a filter screen structure is provided in the drain hole to facilitate the spray water in the spray box 2 to flow through the drain hole to the water tank 1 for recycling.

[0032] Example 2 Based on Example 1, such as Figure 3 , Figures 8 to 10 As shown, a spray liquid pump 11 is installed in the water tank 1. Multiple spray pipes 12 are installed on the outlet of the spray liquid pump 11 and are connected to the lower spiral tubes 22 one by one. Under the action of the spray liquid pump 11, the spray water in the water tank 1 enters each lower spiral tube 22 through the spray pipes 12 and is then sprayed out through the lower nozzles 221 (or when the upper spiral tube 23 is located outside the lower spiral tube 22, the spray water enters the upper spiral tube 23 from the lower spiral tube 22 and can be sprayed out from the lower nozzles 221 on the lower spiral tube 22 and the upper nozzles 231 on the upper spiral tube 23), so as to realize the spray dust removal of the exhaust gas.

[0033] Example 3 Based on Example 1, such as Figures 1 to 7 , Figures 9 to 11 As shown, the spray box 2 has an inlet groove 211 and an outlet groove 212 respectively provided on its opposite side walls. Two adjacent spray boxes 2 are connected through the inlet groove 211 and the outlet groove 212. The spray box 2 near the box body 31 is connected to the box body 31 through the inlet groove 211, and the spray box 2 near the exhaust box 41 is connected to the exhaust box 41 through the outlet groove 212. A push cylinder 24 is provided at the top inside the spray box 2. A rotary motor 25 is provided on the piston rod of the push cylinder 24. A sealing disc 26 is provided on the output shaft of the rotary motor 25. The end of pipe 23 away from the lower spiral pipe 22 is set on the bottom surface of sealing disc 26; an adjusting plate seat 27 is movably inserted into both the inlet groove 211 and the outlet groove 212, and a sealing plate 21 is set on the top surface of the adjusting plate seat 27. The end of the sealing plate 21 away from the adjusting plate seat 27 is movably inserted into the top surface of the inlet groove 211 or the top surface of the outlet groove 212. A slot 271 is set on the side wall of the adjusting plate seat 27 facing the spray box 2. An annular body 261 that matches the slot 271 is set on the outer peripheral wall of the sealing disc 26. The annular body 261 is movably set in the slot 271.

[0034] The exhaust gas inside the housing 31 enters the spray box 2 (the spray box 2 near the end of the housing 31) through the inlet channel 211. After the exhaust gas is sprayed in the spray box 2, it enters the adjacent spray box 2 through the outlet channel 212 and the inlet channel 211 (that is, the exhaust gas flows between two adjacent spray boxes 2 through the outlet channel 212 and the inlet channel 211). Finally, the exhaust gas enters the exhaust box 41 from the outlet channel 212 of the spray box 2 near the exhaust box 41 and is discharged (or enters the filter box 42 after being filtered through the exhaust box 41, and then enters the corresponding spray box 2 for spraying treatment before being discharged).

[0035] When exhaust gas enters the spray box 2, the position can be adjusted by starting the push cylinder 24 to drive the rotating motor 25 and the sealing disc 26 to move vertically according to the intake needs. At the same time, the rotating motor 25 can drive the sealing disc 26 and the upper spiral tube 23 to rotate (at this time, the annular body 261 on the outer peripheral wall of the sealing disc 26 can rotate in the slot 271. When the sealing disc 26 moves vertically to adjust its position, it can simultaneously drive the adjusting plate seat 27 to move in the inlet groove 211 and the outlet groove 212, thereby driving the sealing plate 21 to move in the inlet groove 211 and the outlet groove 212, so as to adjust the size of the opening or closing of the inlet groove 211 and the outlet groove 212). When the upper spiral tube 23 rotates, the height of the upper spiral tube 23 outside the lower spiral tube 22 can be adjusted (that is, the upper spiral tube 23 can rotate into the lower spiral tube 22), thereby achieving the effect of adjusting the spray area of ​​the exhaust gas entering the inlet groove 211.

[0036] The inner cavity of the spray box 2 is a cylinder that matches the diameter of the sealing disc 26. The outer peripheral wall of the sealing disc 26 is in contact with the inner peripheral wall of the spray box 2. When the sealing disc 26 is adjusted in the vertical direction under the action of the pushing cylinder 24, the outer peripheral wall of the sealing disc 26 can always be in contact with the inner cavity of the spray box 2, which can reduce or prevent the overflow of exhaust gas, thereby improving the spray treatment effect of exhaust gas entering the inner cavity of the spray box 2.

[0037] Example 4 Based on Example 1, such as Figures 1 to 5 As shown, a drive motor 33 is embedded in the side wall of the air intake box 3. An adjusting roller 32 is coaxially mounted on the output shaft of the drive motor 33. An arc-shaped plate 34 is connected to the outside of the adjusting roller 32 via a connecting rod 341. The arc-shaped plate 34 is rotatably mounted inside the opening side wall of the inlet groove 211. The arc-shaped plate 34 has a three-quarter arc-shaped structure, and its diameter is adapted to the opening height of the inlet groove 211. The outer peripheral wall of the arc-shaped plate 34 abuts against the inner walls of the upper and lower openings of the inlet groove 211. The drive motor 33 can be activated to drive the adjusting roller 32 and... The arc-shaped plate 34 rotates, and when the arc-shaped plate 34 is located in different positions within the opening sidewall of the inlet groove 211, the exhaust gas intake can be opened or closed. (That is, when the opening on the arc-shaped plate 34 is located within the opening sidewall of the inlet groove 211, external exhaust gas can enter the intake box 3; when the opening on the arc-shaped plate 34 is offset from the opening of the inlet groove 211, the outer peripheral wall of the arc-shaped plate 34 abuts against the inner walls of the upper and lower openings of the inlet groove 211, thus blocking the opening of the inlet groove 211, and at this time, exhaust gas cannot enter the intake box 3.) Example 5 Based on Example 1, such as Figure 1 , Figure 3As shown, the exhaust box 41 is connected to each filter box 42 via the return air pipe 411. Each filter box 42 is equipped with a guide air pipe 421 connected to the corresponding spray box 2, and the guide air pipe 421 is located in the spray box 2 near the inlet trough 211. This allows the exhaust gas that has been sprayed in the spray box 2 and enters the exhaust box 41 to flow through the return air pipe 411 to the corresponding filter box 42 for filtration and spraying again, thereby improving the spraying effect on the exhaust gas. That is, the exhaust gas entering the exhaust box 41 flows back to the corresponding filter box 42 through the return air pipe 411 and the guide air pipe 421, and can be sprayed again in the corresponding filter box 42. In other words, the spray box 2 flowing from the end away from the exhaust box 41 to the end closer to the exhaust box 41 can achieve repeated spraying treatment. After spraying, it enters the exhaust box 41 and is discharged.

[0038] The number of spray boxes 2 is greater than the number of filter boxes 42; that is, the spray boxes 2 near the air inlet box 3 are not equipped with filter boxes 42, so as to prevent the exhaust gas in the filter box 42 from entering the spray box 2 and flowing back into the air inlet box 3 for accumulation.

[0039] An exhaust trough is provided on the outer wall of the exhaust box 41. When the exhaust gas after being sprayed by the spray box 2 does not need to be filtered by the filter box 42, it can be discharged directly through the exhaust trough.

[0040] Example 6 Based on Example 1, such as Figures 4 to 5 , Figure 9 As shown, the height of the inlet trough 211 is the same as the height of the outlet trough 212, and the sum of the lengths of the lower spiral tube 22 and the upper spiral tube 23 is adapted to the height of the inlet trough 211. This allows for position adjustment by pushing the cylinder 24 to drive the rotating motor 25 and the sealing disc 26 to move vertically according to the air intake requirements (at the same time, the opening size of the inlet trough 211 and the outlet trough 212 can be adjusted to achieve the effect of adjusting the exhaust gas intake). At the same time, the rotating motor 25 drives the sealing disc 26 and the upper spiral tube 23 to rotate, so that the upper spiral tube 23 is located at a height outside the lower spiral tube 22, thereby spraying the exhaust gas entering the inlet trough 211.

[0041] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A spiral spray dust removal device, characterized in that, include: Water tank (1); Spray box (2), multiple spray boxes (2) are provided, multiple spray boxes (2) are arranged side by side on the top surface of water tank (1), and adjacent spray boxes (2) are connected to each other; An air intake box (3) is located outside the spray box (2) and is connected to the spray box (2); Exhaust circulation box assembly (4) is located outside the spray box (2) and is connected to the spray box (2); Among them, a lower spiral pipe (22) connected to the water tank (1) is provided on the bottom surface of the spray box (2). An upper spiral pipe (23) is movably provided at the bottom end of the lower spiral pipe (22) away from the spray box (2). The lower spiral pipe (22) is connected to the upper spiral pipe (23). Multiple lower nozzles (221) and multiple upper nozzles (231) are respectively provided on the outer peripheral walls of the lower spiral pipe (22) and the upper spiral pipe (23). The air intake box (3) includes a box body (31). The side wall of the box body (31) away from the spray box (2) is open. The open side wall of the box body (31) is connected to the spray box (2) near the end of the box body (31). An adjusting roller (32) is rotatably installed inside the open side wall of the box body (31). The exhaust circulation box assembly (4) includes an exhaust box (41), which is connected to a spray box (2) at the end away from the box body (31). Multiple filter boxes (42) corresponding to the positions of the spray box (2) are provided on the exhaust box (41). The spray box (2) has an inlet groove (211) and an outlet groove (212) respectively on its two opposing side walls. Two adjacent spray boxes (2) are connected through the inlet groove (211) and the outlet groove (212). The spray box (2) closer to the box body (31) is connected to the box body (31) through the inlet groove (211), and the spray box (2) closer to the exhaust box (41) is connected to the exhaust box (41) through the outlet groove (212). A push cylinder (24) is installed at the top of the spray box (2). A rotary motor (25) is installed on the piston rod of the push cylinder (24). A sealing disc (26) is installed on the output shaft of the rotary motor (25). The end of the upper spiral tube (23) away from the lower spiral tube (22) is installed on the bottom surface of the sealing disc (26). An adjusting plate seat (27) is movably inserted into both the inlet tank (211) and the outlet tank (212). A sealing plate (21) is provided on the top surface of the adjusting plate seat (27). The end of the sealing plate (21) away from the adjusting plate seat (27) is movably inserted into the top surface of the inlet tank (211) or the top surface of the outlet tank (212). A slot (271) is provided on the side wall of the adjusting plate seat (27) facing the spray box (2). An annular body (261) that matches the slot (271) is provided on the outer peripheral wall of the sealing plate (26). The annular body (261) is movably disposed in the slot (271).

2. The spiral spray dust removal device as described in claim 1, characterized in that, A spray liquid pump (11) is installed in the water tank (1), and multiple spray pipes (12) connected to the lower spiral pipe (22) are installed on the outlet of the spray liquid pump (11).

3. The spiral spray dust removal device as described in claim 1, characterized in that, A drive motor (33) is embedded in the side wall of the air intake box (3). An adjusting roller (32) is coaxially mounted on the output shaft of the drive motor (33). An arc plate (34) is connected to the outside of the adjusting roller (32) through a connecting rod (341). The arc plate (34) is rotatably mounted in the side wall of the opening of the box body (31). The arc plate (34) is a three-quarter arc structure, and the diameter of the arc plate (34) is adapted to the opening height of the box body (31). The outer peripheral wall of the arc plate (34) abuts against the upper and lower inner walls of the opening of the box body (31).

4. The spiral spray dust removal device as described in claim 1, characterized in that, The inner cavity of the spray box (2) is a cylinder that matches the diameter of the sealing plate (26), and the outer peripheral wall of the sealing plate (26) is in contact with the inner peripheral wall of the spray box (2).

5. The spiral spray dust removal device as described in claim 1, characterized in that, The exhaust box (41) is connected to each filter box (42) through the return air pipe (411). Each filter box (42) is equipped with a guide air pipe (421) connected to the corresponding spray box (2), and the guide air pipe (421) is located inside the spray box (2) near the inlet tank (211).

6. The spiral spray dust removal device as described in claim 1, characterized in that, The number of spray boxes (2) is greater than the number of filter boxes (42).

7. The spiral spray dust removal device as described in claim 1, characterized in that, The height of the inlet channel (211) is the same as the height of the outlet channel (212), and the sum of the lengths of the lower spiral tube (22) and the upper spiral tube (23) is matched with the height of the inlet channel (211).

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