Axial flow fan type smoke purifying device

Abstract

The application discloses a kind of axial flow fan type smoke purification device, it is related to flue gas purification technical field, its technical scheme is: including first cylinder, first cylinder side is fixed with box body, box body side is fixed with second cylinder, first cylinder inside is equipped with centrifugal filter mechanism, box body inside is equipped with purification treatment mechanism;Centrifugal filter mechanism includes annular body, annular body is equipped in first cylinder inside, annular body side is fixed with fixed cylinder, fixed cylinder side is fixed with support cylinder, first inner groove is opened in fixed cylinder inside, first inner groove inside is connected with rotating rod by bearing.This application generates centrifugal force by high-speed rotating semicircular filter screen, efficiently separates and discharges the particulate matter with larger mass in smoke, realizes solid-gas preliminary separation, and the smoke after pretreatment enters HEPA filter screen for fine filtering, which can effectively filter small particulate matter and smoke molecules, and significantly improves the stability of purification efficiency.

Description

Technical Field

[0001] This invention relates to the field of flue gas purification technology, and specifically to an axial flow fan-type smoke purification device. Background Technology

[0002] Axial flow fans have a wide range of applications. They are a type of fan in which the airflow direction is the same as the axis of the fan blades. Such as electric fans and air conditioner outdoor unit fans are axial flow fans. They are called "axial flow" because the gas flows parallel to the fan axis. Axial flow fans are usually used in applications where the flow rate requirement is high and the pressure requirement is low. Axial flow fans are fixed in position and move the air.

[0003] Existing industrial fume purification devices typically use axial flow fans to draw in smoke and fumes, which are then filtered through multiple layers of filters. However, such devices generally suffer from the following problems: the filters are under heavy load and prone to clogging. Fumes containing a large amount of solid particles (such as metal oxides in welding fumes) directly impact the filters, which quickly leads to blockage of the filter pores, a sharp increase in filtration resistance, a decrease in purification efficiency, and the need for frequent shutdowns to replace or clean the filters, resulting in high maintenance costs and disruption to production continuity. Summary of the Invention

[0004] Therefore, the present invention provides an axial flow fan type smoke purification device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an axial flow fan type smoke purification device, comprising a first cylinder, a box body fixedly disposed on one side of the first cylinder, a second cylinder fixedly disposed on one side of the box body, a centrifugal filtration mechanism disposed inside the first cylinder, and a purification treatment mechanism disposed inside the box body. The centrifugal filtration mechanism includes an annular body disposed inside a first cylinder. A fixed cylinder is fixedly mounted on one side of the annular body, and a support cylinder is fixedly mounted on one side of the fixed cylinder. A first inner groove is formed inside the fixed cylinder, and a rotating rod is connected to the first inner groove via a bearing. One end of the rotating rod extends out of the fixed cylinder and is connected to the fixed cylinder via a bearing. A knob is fixedly connected to one end of the rotating rod. A fourth bevel gear is fixedly sleeved on the outside of the rotating rod. A third bevel gear is provided on one side of the fourth bevel gear, and the fourth bevel gear meshes with the third bevel gear. A threaded rod is fixedly connected to one side of the third bevel gear. The threaded rod extends into the support cylinder and is connected to the support cylinder via a bearing. A sliding plate is threaded onto the outside of the threaded rod, and the sliding plate passes through the support cylinder and is slidably connected to the support cylinder. A connecting seat is fixedly provided on one side of the sliding plate, and a square head is connected to one side of the connecting seat via a bearing. Semi-circular filter screens are fixedly installed on both sides of the square head via bolts. A column is fixedly provided on one side of the square head, and a spring is provided inside the column. A square is provided on one side of the column, and one end of the square extends into the column and is slidably connected to the column. A connecting plate is fixedly connected to one end of the square, and a clamping plate is fixedly provided on one side of the connecting plate.

[0006] Preferably, two crosses are fixedly installed inside the first cylinder. A second motor is fixedly installed on one side of one of the crosses. A drive shaft is fixedly connected to the output end of the second motor. A fan blade is fixedly sleeved on the outside of the drive shaft. The drive shaft passes through the cross and is connected to the cross through a bearing. A chuck is fixedly connected to one end of the drive shaft. A slot is opened on one side of the chuck, and one side of the chuck plate extends into the slot.

[0007] Preferably, a plurality of second mounting plates are fixedly provided on one side of the annulus, and a plurality of first mounting plates are fixedly provided on the outer surface of the first cylinder, and the second mounting plates are fixedly connected to the first mounting plates by bolts.

[0008] Preferably, a drainage groove is provided on the inner side of the annulus.

[0009] Preferably, the purification mechanism includes a HEPA filter, which is disposed inside the housing and fixed to the side wall of the housing by bolts. Electric push rods are fixedly provided at the top and bottom of the housing. Connecting plates are fixedly provided at the output ends of the two electric push rods. A back-blowing housing and a suction housing are fixedly provided between the two connecting plates. A back-blowing component is provided on one side of the back-blowing housing, and a suction component is provided on one side of the suction housing.

[0010] Preferably, the back-blowing assembly includes a first motor, which is fixedly mounted on one side of the back-blowing box. A second inner groove is formed inside the back-blowing box. A transmission rod is fixedly connected to the output end of the first motor. The transmission rod extends into the second inner groove and is connected to the side wall of the second inner groove via a bearing. A first bevel gear is fixedly connected to one end of the transmission rod. A rotating cylinder is connected to the second inner groove via a bearing. A second bevel gear is fixedly sleeved on the outside of the rotating cylinder. The second bevel gear meshes with the first bevel gear. A blower housing is fixedly connected to one end of the rotating cylinder. Multiple blower nozzles are fixedly mounted on one side of the blower housing. A rotary joint is installed on one end of the rotating cylinder. A blower is fixedly mounted on one side of the back-blowing box. A flexible hose is fixedly connected to the output end of the blower. One end of the flexible hose extends into the second inner groove and is fixedly connected to the rotary joint.

[0011] Preferably, the suction component includes a blower, which is installed on one side of the suction housing. A dust collection bag is installed on one side of the blower, and a through groove is provided on one side of the suction housing, which is connected to the input end of the blower.

[0012] Preferably, a grid plate is fixedly provided on one side of both the first cylinder and the second cylinder.

[0013] Preferably, a support plate is fixedly provided at the bottom of both the first cylinder and the second cylinder.

[0014] Preferably, the bottom of the annular body is fixedly provided with a feeding port.

[0015] The embodiments of the present invention have the following beneficial effects: 0. This device innovatively adopts a two-stage purification architecture of "centrifugal pre-separation + HEPA fine filtration". Targeting the characteristics of high-concentration solid particulate matter in industrial smoke, centrifugal force is first generated by a high-speed rotating semi-circular filter to efficiently separate and discharge larger particles in the smoke, achieving preliminary solid-gas separation. The pre-treated smoke then enters the HEPA filter for fine filtration, which can effectively filter fine particles and smoke molecules, and finally discharge clean air. This design significantly reduces the load on the HEPA filter, avoids rapid clogging caused by particles directly impacting the fine filter, significantly improves the stability of purification efficiency, and extends the continuous operation time of the purification system. 0. Online automatic cleaning function reduces maintenance costs and ensures production continuity: The device is equipped with an online automatic cleaning mechanism for HEPA filters, which can complete the cleaning operation without disassembling the filter. During cleaning, the electric push rod drives the back-blowing box and the suction housing to form a closed chamber. The back-blowing component realizes high-pressure blowing by rotating the blower nozzle through bevel gear transmission. At the same time, the suction component simultaneously sucks the blown dust into the dust collection bag to avoid secondary pollution. This function completely solves the problem of frequent shutdowns for disassembly and cleaning of filters required by existing devices. It not only reduces the intensity of manual maintenance and filter replacement costs, but also ensures the continuity of production operations, making it especially suitable for industrial continuous production scenarios. Attached Figure Description

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in 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 merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 A cross-sectional view of the overall structure provided for this invention; Figure 3 A perspective view of the centrifugal filtration mechanism provided by the present invention; Figure 4 This is a cross-sectional view of the torus provided by the present invention; Figure 5 A cross-sectional view of the centrifugal filtration mechanism provided by the present invention; Figure 6 A three-dimensional view of a semi-circular filter screen provided for this invention; Figure 7 A perspective view of the purification and treatment mechanism provided by the present invention; Figure 8 A perspective view of the blower housing provided by the present invention; Figure 9 A perspective view of the attraction component provided by the present invention; Figure 10A perspective view of the reverse air blowing component provided by the present invention; Figure 11 This is a cross-sectional view of the reverse blowing assembly provided by the present invention; Figure 12 Provided by the present invention Figure 2 Enlarged view of the structure of section A in the middle; Figure 13 Provided by the present invention Figure 5 Enlarged view of the structure of section B in the middle; Figure 14 Provided by the present invention Figure 11 Enlarged view of the structure of section C.

[0019] In the diagram: 1. First cylinder; 2. Box body; 3. Second cylinder; 4. Support plate; 5. Grid plate; 6. Circular ring; 7. Discharge port; 8. First mounting plate; 9. Second mounting plate; 10. Back-blowing box body; 11. HEPA filter; 12. Suction housing; 13. Exhaust fan; 14. Dust collection bag; 15. Electric push rod; 16. Connecting plate; 17. First motor; 18. Blower; 19. Hose; 20. First bevel gear; 21. Cross; 22. Second motor; 23. Drive shaft; 24. Drainage channel; 25. Fan blade; 26. Fixing 27. Cylinder; 28. Knob; 29. ​​Chuck; 20. Connecting plate; 31. Support cylinder; 32. Rotating rod; 33. Semi-circular filter screen; 34. Clamping plate; 35. Column; 36. Block; 37. Blower housing; 38. Blower nozzle; 39. Rotating cylinder; 40. Second bevel gear; 41. Rotary joint; 42. Through groove; 43. Transmission rod; 44. First inner groove; 45. Third bevel gear; 46. Threaded rod; 47. Slide plate; 48. Block head; 49. Spring; 50. Second inner groove; 51. Clamping slot; 52. Connecting seat; 53. Fourth bevel gear. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0021] See attached document Figure 1 - Appendix Figure 14 The present invention provides an axial flow fan type smoke purification device, including a first cylinder 1, a box body 2 fixedly provided on one side of the first cylinder 1, a second cylinder 3 fixedly provided on one side of the box body 2, a centrifugal filtration mechanism provided inside the first cylinder 1, and a purification treatment mechanism provided inside the box body 2. The centrifugal filtration mechanism includes an annular body 6, which is disposed inside a first cylinder 1. A fixed cylinder 26 is fixedly mounted on one side of the annular body 6, and a support cylinder 30 is fixedly mounted on one side of the fixed cylinder 26. A first inner groove 43 is formed inside the fixed cylinder 26. A rotating rod 31 is connected to the first inner groove 43 through a bearing. One end of the rotating rod 31 extends out of the fixed cylinder 26 and is connected to the fixed cylinder 26 through a bearing. A knob 27 is fixedly connected to one end of the rotating rod 31. A fourth bevel gear 52 is fixedly sleeved on the outside of the rotating rod 31. A third bevel gear 44 is provided on one side of the fourth bevel gear 52, and the fourth bevel gear 52 meshes with the third bevel gear 44. A threaded rod 45 is fixedly connected to one side of the third bevel gear 44. 45 extends into the support cylinder 30 and is connected to the support cylinder 30 via a bearing. A sliding plate 46 is threaded onto the outside of the threaded rod 45. The sliding plate 46 passes through the support cylinder 30 and is slidably connected to the support cylinder 30. A connecting seat 51 is fixedly provided on one side of the sliding plate 46. A square head 47 is connected to one side of the connecting seat 51 via a bearing. Semi-circular filter screens 32 are fixedly installed on both sides of the square head 47 via bolts. A column 34 is fixedly provided on one side of the square head 47. A spring 48 is provided inside the column 34. A square block 35 is provided on one side of the column 34. One end of the square block 35 extends into the inside of the column 34 and is slidably connected to the column 34. A connecting plate 29 is fixedly connected to one end of the square block 35. A clamping plate 33 is fixedly provided on one side of the connecting plate 29. In this embodiment, during the movement of the plate 33, it first contacts the chuck 28. Under the obstruction of the chuck 28, the block 35 is pressed into the column 34, and the spring 48 is compressed. At this time, the second motor 22 is started, which drives the transmission shaft 23 and the chuck 28 to rotate slowly. When the slot 50 on the chuck 28 rotates to align with the plate 33, the compressed spring 48 releases its elastic force, pushing the block 35 and the plate 33 outward, so that the plate 33 is engaged in the slot 50, completing the automatic engagement of the power connection. The semi-circular filter screen 32 is made of stainless steel. To achieve the purpose of filtration, the device adopts the following technical solution: Two crosses 21 are fixedly installed inside the first cylinder 1. A second motor 22 is fixedly installed on one side of one of the crosses 21. A transmission shaft 23 is fixedly connected to the output end of the second motor 22. A fan blade 25 is fixedly sleeved on the outside of the transmission shaft 23. The transmission shaft 23 passes through the crosses 21 and is connected to the crosses 21 through a bearing. A chuck 28 is fixedly connected to one end of the transmission shaft 23. A slot 50 is opened on one side of the chuck 28. A plate 33 extends into the slot 50. The second motor 22 continues to work, and the transmission shaft 23 simultaneously drives the fan blade 25 and the chuck 28 to rotate at high speed. The fan blade 25 generates axial airflow, which draws in external flue gas from the grid plate 5 on the left side of the first cylinder 1. The chuck 28 drives the block head 47 and the semi-circular filter screen 32 to rotate synchronously through the plate 33, the connecting plate 29, the block 35, and the column 34. To achieve the installation purpose, the device adopts the following technical solution: a plurality of second mounting plates 9 are fixedly provided on one side of the annular body 6, a plurality of first mounting plates 8 are fixedly provided on the outer surface of the first cylinder 1, the second mounting plates 9 and the first mounting plates 8 are connected and fixed by bolts, the annular body 6 with the assembled semi-circular filter screen 32 is inserted into the first cylinder 1 as a whole, so that the second mounting plates 9 and the first mounting plates 8 are aligned and fastened with bolts, thus completing the installation of the centrifugal filtration mechanism; In order to achieve the purpose of slag discharge, the device adopts the following technical solution: the inner side of the annular body 6 is provided with a diversion groove 24, and the bottom of the annular body 6 is fixed with a discharge port 7. The flue gas first passes through the high-speed rotating semi-circular filter screen 32. Under the action of centrifugal force, the larger particles in the flue gas are thrown towards the inner wall of the annular body 6 and slide down along the diversion groove 24. Finally, they are discharged from the device through the discharge port 7, thus achieving preliminary solid-gas separation. To achieve fine filtration, this device employs the following technical solution: The purification mechanism includes a HEPA filter 11, which is disposed inside the housing 2 and fixed to the side wall of the housing 2 by bolts. Electric push rods 15 are fixedly installed at the top and bottom of the housing 2. Connecting plates 16 are fixedly installed at the output ends of both electric push rods 15. A back-blowing housing 10 and a suction housing 12 are fixedly installed between the two connecting plates 16. A back-blowing assembly is provided on one side of the back-blowing housing 10, and a suction assembly is provided on one side of the suction housing 12. The back-blowing assembly includes a first motor 17, which is fixedly mounted on one side of the back-blowing box 10. A second inner groove 49 is formed inside the back-blowing box 10. A transmission rod 42 is fixedly connected to the output end of the first motor 17. The transmission rod 42 extends into the second inner groove 49 and is connected to the side wall of the second inner groove 49 via a bearing. A first bevel gear 20 is fixedly connected to one end of the transmission rod 42. A rotating cylinder 38 is connected to the inside of the second inner groove 49 via a bearing. A second bevel gear 39 is fixedly sleeved on the outside of the rotating cylinder 38. Gear 39 meshes with the first bevel gear 20. A blower housing 36 is fixedly connected to one end of the rotating cylinder 38. Multiple blower nozzles 37 are fixedly provided on one side of the blower housing 36. A rotary joint 40 is installed at one end of the rotating cylinder 38. A blower 18 is fixedly provided on one side of the reverse air box 10. A flexible hose 19 is fixedly connected to the output end of the blower 18. One end of the flexible hose 19 extends into the second inner groove 49 and is fixedly connected to the rotary joint 40. The suction assembly includes a blower 13, which is installed on one side of the suction housing 12. A dust collection bag 14 is installed. A through groove 41 is opened on one side of the suction housing 12. The through groove 41 is connected to the input end of the induced draft fan 13. The pre-treated flue gas continues to flow to the HEPA filter 11 in the box 2. The HEPA filter 11 performs high-efficiency filtration of fine particles and smoke in the flue gas. The second motor 22 is briefly stopped, and the electric push rods 15 at the top and bottom of the box 2 are started. The electric push rods 15 push the connecting plate 16, the back-blowing box 10 and the suction housing 12 to move towards the middle until the HEPA filter 11 is sandwiched in the middle, forming a temporary closed cleaning chamber. Start the back-blowing assembly: The first motor 17 operates, driving the first bevel gear 20 to rotate via the transmission rod 42. The first bevel gear 20 drives the second bevel gear 39, which meshes with it, to rotate. This causes the rotating cylinder 38, the blower housing 36 fixed to it, and multiple blower nozzles 37 to rotate together. At the same time, the blower 18 is started. The high-pressure gas generated by the blower 18 is delivered to the blower housing 36 through the hose 19, the rotary joint 40, and the rotating cylinder 38. Finally, it is sprayed out from the rotating blower nozzles 37, forming a rotating scanning high-pressure back-blowing airflow that evenly sweeps the surface of the HEPA filter 11. Start the suction assembly: Simultaneously start the exhaust fan 13. After the back-blowing airflow blows up the dust attached to the surface of the HEPA filter 11, the exhaust fan 13 draws the dust-laden airflow through the through groove 41 on the suction housing 12. The dust is collected into the dust collection bag 14 to avoid secondary pollution. In order to achieve the purpose of interception, the device adopts the following technical solution: a grid plate 5 is fixedly provided on one side of the first cylinder 1 and the second cylinder 3, and the grid plate 5 intercepts large debris from entering the device. In order to achieve the purpose of support, the device adopts the following technical solution: the bottom of the first cylinder 1 and the second cylinder 3 are both fixedly provided with support plates 4, and the support plates 4 have the function of supporting the first cylinder 1 and the second cylinder 3.

[0022] The process of using this invention is as follows: First, the two semi-circular filter screens 32 are symmetrically installed on both sides of the square head 47 using bolts.

[0023] Insert the assembled semi-circular filter screen 32 into the first cylinder 1, align the second mounting plate 9 with the first mounting plate 8, and tighten with bolts to complete the installation of the centrifugal filtration mechanism. Rotating knob 27 causes rotating rod 31 and fourth bevel gear 52 to rotate. Fourth bevel gear 52 drives third bevel gear 44, which meshes with it, to rotate, thereby causing threaded rod 45 to rotate. The rotation of threaded rod 45 causes slide plate 46, which is threaded with it, to move laterally along support cylinder 30. Slide plate 46 pushes block head 47, column 34, block 35, connecting plate 29 and clamping plate 33 to move through connecting seat 51. Power connection and filter start-up: During the movement, the chuck 33 will first contact the chuck 28. Under the obstruction of the chuck 28, the block 35 is pressed into the cylinder 34, and the spring 48 is compressed. At this time, the second motor 22 is started. The second motor 22 drives the transmission shaft 23 and the chuck 28 to rotate slowly. When the slot 50 on the chuck 28 rotates to align with the plate 33, the compressed spring 48 releases its elastic force, pushing the block 35 and the plate 33 outward, so that the plate 33 is inserted into the slot 50, completing the automatic engagement of the power connection. The second motor 22 continues to work, and the transmission shaft 23 simultaneously drives the fan blade 25 and the chuck 28 to rotate at high speed. The fan blade 25 generates axial airflow, which draws in external smoke from the grid plate 5 on the left side of the first cylinder 1. The chuck 28 drives the block head 47 and the semi-circular filter screen 32 to rotate synchronously through the chuck plate 33, the connecting plate 29, the block 35, and the column 34. Centrifugal filtration process: The flue gas first passes through a high-speed rotating semi-circular filter screen 32. Under the action of centrifugal force, the larger particles in the flue gas are thrown towards the inner wall of the annular body 6 and slide down along the guide groove 24. Finally, they are discharged from the device through the discharge port 7, thus achieving preliminary solid-gas separation. The pre-treated flue gas continues to flow into the HEPA filter 11 inside the housing 2. The HEPA filter 11 performs high-efficiency filtration of fine particulate matter and smoke in the flue gas. The purified clean air is discharged through the grid plate 5 on the right side of the second cylinder 3. Automatic filter cleaning process: Briefly stop the second motor 22, start the electric push rods 15 at the top and bottom of the box 2, the electric push rods 15 push the connecting plate 16, the back-blowing box 10 and the suction housing 12 to move towards the middle until the HEPA filter 11 is clamped in the middle, forming a temporary closed cleaning chamber. Start the back-blowing assembly: The first motor 17 operates, driving the first bevel gear 20 to rotate via the transmission rod 42. The first bevel gear 20 drives the second bevel gear 39, which meshes with it, to rotate. This causes the rotating cylinder 38, the blower housing 36 fixed to it, and multiple blower nozzles 37 to rotate together. At the same time, the blower 18 is started. The high-pressure gas generated by the blower 18 is delivered to the blower housing 36 through the hose 19, the rotary joint 40, and the rotating cylinder 38. Finally, it is sprayed out from the rotating blower nozzles 37, forming a rotating scanning high-pressure back-blowing airflow that evenly sweeps the surface of the HEPA filter 11. Start the suction assembly: Simultaneously start the exhaust fan 13. After the back-blowing airflow blows up the dust attached to the surface of the HEPA filter 11, the exhaust fan 13 draws the dust-laden airflow through the through groove 41 on the suction housing 12. The dust is collected into the dust collection bag 14 to avoid secondary pollution. After cleaning is completed, turn off the first motor 17, blower 18 and induced draft fan 13, the electric push rod 15 retracts, driving the back-blowing box 10 and suction housing 12 to reset, and restart the second motor 22, and the device resumes normal filtration operation.

[0024] Maintenance and disassembly: When it is necessary to clean or replace the semi-circular filter screen 32, simply remove the bolts connecting the first mounting plate 8 and the second mounting plate 9 to pull the entire annular body 6 and the centrifugal filtration mechanism out of the first cylinder 1, making maintenance very convenient; HEPA filter 11 is fixed inside housing 2 by bolts and can also be removed and replaced separately; Through the above working process, the present invention achieves two-stage purification of flue gas through "centrifugal pre-separation + HEPA fine filtration" and has an online automatic cleaning function for HEPA filter. It effectively solves the problems of easy filter clogging, frequent maintenance and difficult cleaning in the prior art, and significantly improves the practicality and economy of the smoke purification device.

[0025] The above description is merely a preferred embodiment of the present invention. Any person skilled in the art can modify the present invention or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An axial flow fan type smoke purification device, comprising a first cylinder (1), characterized in that: A box body (2) is fixedly provided on one side of the first cylinder (1), and a second cylinder (3) is fixedly provided on one side of the box body (2). A centrifugal filtration mechanism is provided inside the first cylinder (1), and a purification treatment mechanism is provided inside the box body (2). The centrifugal filtration mechanism includes an annular body (6), which is located inside a first cylinder (1). A fixed cylinder (26) is fixedly provided on one side of the annular body (6), and a support cylinder (30) is fixedly provided on one side of the fixed cylinder (26). A first inner groove (43) is provided inside the fixed cylinder (26). A rotating rod (31) is connected to the first inner groove (43) through a bearing. One end of the rotating rod (31) extends out of the fixed cylinder (26) and is connected to the fixed cylinder (26) through a bearing. A knob (27) is fixedly connected to one end of the rotating rod (31). A fourth bevel gear (52) is fixedly sleeved on the outside of the rotating rod (31). A third bevel gear (44) is provided on one side of the fourth bevel gear (52). The fourth bevel gear (52) meshes with the third bevel gear (44). A threaded rod (45) is fixedly connected to one side of the third bevel gear (44). The threaded rod (45) extends into the support cylinder (30) and is connected to the support cylinder (30) by a bearing. The threaded rod (45) is fitted with a sliding plate (46) by a thread. The sliding plate (46) passes through the support cylinder (30) and is slidably connected to the support cylinder (30). A connecting seat (51) is fixedly provided on one side of the sliding plate (46). A square head (47) is connected to one side of the connecting seat (51) by a bearing. A semi-circular filter screen (32) is fixedly installed on both sides of the square head (47) by bolts. A column (34) is fixedly provided on one side of the square head (47). A spring (48) is provided inside the column (34). A square (35) is provided on one side of the column (34). One end of the square (35) extends into the column (34) and is slidably connected to the column (34). A connecting plate (29) is fixedly connected to one end of the square (35). A clamping plate (33) is fixedly provided on one side of the connecting plate (29).

2. The axial flow fan type smoke purification device according to claim 1, characterized in that: Two crosses (21) are fixedly installed inside the first cylinder (1). A second motor (22) is fixedly installed on one side of one of the crosses (21). A drive shaft (23) is fixedly connected to the output end of the second motor (22). A fan blade (25) is fixedly sleeved on the outside of the drive shaft (23). The drive shaft (23) passes through the cross (21) and is connected to the cross (21) through a bearing. A chuck (28) is fixedly connected to one end of the drive shaft (23). A slot (50) is opened on one side of the chuck (28). One side of the chuck plate (33) extends into the slot (50).

3. The axial flow fan type smoke purification device according to claim 1, characterized in that: Multiple second mounting plates (9) are fixedly provided on one side of the annular body (6), and multiple first mounting plates (8) are fixedly provided on the outer surface of the first cylinder (1). The second mounting plates (9) and the first mounting plates (8) are connected and fixed by bolts.

4. The axial flow fan type smoke purification device according to claim 1, characterized in that: The inner side of the annular body (6) is provided with a drainage groove (24).

5. The axial flow fan type smoke purification device according to claim 1, characterized in that: The purification mechanism includes a HEPA filter (11), which is located inside the box (2) and fixed to the side wall of the box (2) by bolts. Electric push rods (15) are fixedly provided at the top and bottom of the box (2). Connecting plates (16) are fixedly provided at the output ends of the two electric push rods (15). A back-blowing box (10) and a suction shell (12) are fixedly provided between the two connecting plates (16). A back-blowing component is provided on one side of the back-blowing box (10), and a suction component is provided on one side of the suction shell (12).

6. The axial flow fan type smoke purification device according to claim 5, characterized in that: The back-blowing assembly includes a first motor (17), which is fixedly mounted on one side of the back-blowing box (10). A second inner groove (49) is provided inside the back-blowing box (10). A transmission rod (42) is fixedly connected to the output end of the first motor (17). The transmission rod (42) extends into the second inner groove (49) and is connected to the side wall of the second inner groove (49) via a bearing. A first bevel gear (20) is fixedly connected to one end of the transmission rod (42). A rotating cylinder (38) is connected to the inside of the second inner groove (49) via a bearing. The rotating cylinder (38) is located outside... A second bevel gear (39) is fixedly fitted onto the part, and the second bevel gear (39) meshes with the first bevel gear (20). A blower housing (36) is fixedly connected to one end of the rotating cylinder (38). A plurality of blower nozzles (37) are fixedly provided on one side of the blower housing (36). A rotary joint (40) is installed on one end of the rotating cylinder (38). A blower (18) is fixedly provided on one side of the back-blowing box (10). A hose (19) is fixedly connected to the output end of the blower (18). One end of the hose (19) extends into the interior of the second inner groove (49) and is fixedly connected to the rotary joint (40).

7. The axial flow fan type smoke purification device according to claim 5, characterized in that: The suction assembly includes a blower (13), which is installed on one side of the suction housing (12). A dust collection bag (14) is installed on one side of the blower (13). A through groove (41) is provided on one side of the suction housing (12), and the through groove (41) is connected to the input end of the blower (13).

8. The axial flow fan type smoke purification device according to claim 1, characterized in that: A grid plate (5) is fixedly provided on one side of both the first cylinder (1) and the second cylinder (3).

9. The axial flow fan type smoke purification device according to claim 1, characterized in that: The bottom of the first cylinder (1) and the second cylinder (3) are both fixedly provided with support plates (4).

10. The axial flow fan type smoke purification device according to claim 4, characterized in that: The bottom of the ring (6) is fixedly provided with a feeding port (7).

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