Anti-blocking biomass fuel processing dust fall and desulfurization equipment and method

Abstract

The invention discloses an anti-blocking biomass fuel processing dust-falling desulfurization device and method, and belongs to the technical field of fuel gas purification devices and methods.The anti-blocking biomass fuel processing dust-falling desulfurization device comprises a box body, the periphery of the bottom end of the box body is fixed to a bottom plate through a support, and the top of the box body is provided with an adapter pipe communicated with external fuel gas; the dust fall sweeping mechanism comprises a driving motor arranged on the bottom plate, an output shaft of the driving motor is in transmission connection with a driving wheel through a first conveying belt, the exterior of the driving wheel is arranged on a cover body, one end of the cover body is fixed to the box body through a support, and one end of the driving wheel is fixed to a first bidirectional bevel gear; the outer wall of the first bidirectional bevel gear is in engaged transmission with a second bidirectional bevel gear fixed to the horizontal lead screw shaft. The filter plate can solve the technical problems that once particle impurities are clamped in filter holes, the phenomenon of collision and fixation occurs, or when the filter plate needs to be disassembled and cleaned, the filter plate is inconvenient to disassemble and clean, and personnel operation is not facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of fuel purification equipment and methods, and in particular relates to anti-clogging biomass fuel processing dust reduction and desulfurization equipment and methods. Background Art

[0002] Biomass fuel: refers to the burning of biomass materials as fuel, generally mainly agricultural and forestry waste, such as straw, sawdust, bagasse, rice bran, etc., mainly different from fossil fuels. The application of biomass fuel is actually mainly biomass molding fuel, which is a new type of clean fuel that uses agricultural and forestry waste as raw materials, and is made into various shapes such as blocks and granules through processes such as crushing, mixing, extrusion, and drying, and can be directly burned.

[0003] During the combustion process of biomass fuel, a large amount of particulate impurities will be generated. Generally, the particulate impurities in the gas are usually adsorbed and purified by filtering with filter plates. Once the particulate impurities are stuck in the filter holes, there will be resistance and fixation, or the filter plates need to be disassembled and cleaned, which is inconvenient and not conducive to personnel operation. In addition, when the filtered gas is re-filtered, it needs to be re-transported with the help of a pump body, and an additional power source needs to be set up, which increases the design cost and is not conducive to saving resources. Summary of the invention

[0004] The purpose of the present invention is to provide anti-clogging biomass fuel processing dust reduction and desulfurization equipment and method to solve the technical problems that once particulate impurities are stuck in the filter holes, there will be resistance and fixation, or the filter plate needs to be disassembled and cleaned, which is inconvenient and not conducive to human operation.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: Anti-clogging biomass fuel processing dust reduction and desulfurization equipment, including: The bottom of the box is fixed to the bottom plate by brackets, and the top of the box is provided with a transfer tube connected to the external fuel gas; A dust removal and cleaning mechanism, the dust removal and cleaning mechanism comprises a driving motor placed on a bottom plate, the output shaft of the driving motor and the driving wheel are connected by a first conveyor belt transmission, the driving wheel is externally placed on a cover body, one end of the cover body is fixed to a box body through a bracket, one end of the driving wheel is fixed to a first bidirectional bevel gear, the outer wall of the first bidirectional bevel gear is meshed with a second bidirectional bevel gear fixed to a horizontal screw shaft, and the central shaft on the second bidirectional bevel gear and the first driven wheel are connected by a second conveyor belt transmission; Among them, one end of the rotating teeth on the second bidirectional bevel gear and the first driven wheel are meshed with a first bevel gear fixed on the vertical screw shaft, the horizontal screw shaft and the vertical screw shaft are placed in the partition on the inner wall of the box body, and the horizontal screw shaft and the vertical screw shaft are correspondingly spirally driven with a first screw nut and a second screw nut, both ends of the first screw nut are connected to the cleaning brush through a first slider, and both ends of the second screw nut are connected to the frame through a second slider.

[0006] Furthermore, a push rod is detachably installed on the top of the frame, and a first filter plate and a second filter plate fixed to the inner wall of the box are formed between the push rod and the cleaning brush, and the top of the push rod is set in a cone shape. The filter holes on the first filter plate and the second filter plate are adapted to the size of the push rod, and the first slider and the second slider are correspondingly connected with horizontal slide grooves and vertical slide grooves along the outer wall of the partition.

[0007] Furthermore, the first filter plate and the second filter plate are symmetrically arranged relative to the center of the partition, and the outer wall edges of the horizontal screw shaft and the vertical screw shaft are provided with rolling grooves placed on the inner wall of the box body, and a baffle rotatably connected to the hinge is provided on one side of the outer wall of the box body near the cleaning brush, and the outer wall of the baffle is provided with a movable opening placed on the box body.

[0008] Furthermore, it also includes a diversion drive mechanism, which includes a second bevel gear meshing with the first bidirectional bevel gear for transmission, one end of the second bevel gear is fixed to the second driven wheel, and the outer wall extension of the second driven wheel is connected to a rotating blade placed inside the intake pipe, and the top end of the intake pipe extends to the first filter plate and the air cavity at the top end of the inner wall of the box body.

[0009] Furthermore, a sealing gasket is installed on the second driven wheel near the corner of the intake pipe, and a through hole connected to the second driven wheel is opened at the center of the sealing gasket. One end of the intake pipe is connected to an outlet pipe placed between the second filter plate and the bottom end of the inner wall of the box body.

[0010] Furthermore, a desulfurization tower placed on a bottom plate is installed at one end of the outlet pipe through a three-way pipe, and regulating valves are correspondingly installed on the three-way pipe, the inlet pipe and the outlet pipe.

[0011] Furthermore, a bearing connected to the output shaft of the driving motor is provided at the bottom end of the box body, and the connection between the driving motor and the bottom plate is locked and fixed by a bolt assembly.

[0012] The anti-clogging biomass fuel processing dust reduction and desulfurization method comprises the following steps: S1.1. Connect the external fuel gas to the inside of the box through the transfer tube, start the drive motor, rotate the first bidirectional bevel gear, and through the gear meshing transmission, cooperate with the transmission effect of the second conveyor belt, the horizontal screw shafts at the upper and lower ends drive the cleaning brush on the first screw nut to move horizontally back and forth, and the vertical screw shaft drives the push rod on the second screw nut to move up and down back and forth; S1.2, when the push rod moves up and down, it can push the impurities stuck in the filter holes to the first filter plate and the second filter plate, and then clean them to the movable opening of the baffle plate through the cleaning brush and discharge them; S1.3. When the driving motor is started, it can drive the rotating blades on the second driven wheel to rotate at the same time. In conjunction with the regulating valve, the filtered gas can be re-filtered or transported to the desulfurization tower for absorption and purification.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) A dust removal and cleaning mechanism is provided. After the driving motor is started, it can drive the first bidirectional bevel gear on the driving wheel to rotate, and then drive the second bidirectional bevel gear to rotate under the action of the gear meshing transmission. In conjunction with the second conveyor belt, it can drive the rotation of the horizontal screw shaft and the vertical screw shaft at the upper and lower ends. With the help of the spiral transmission, the particulate impurities stuck in the filter hole can be ejected to the first filter plate and the second filter plate by moving the ejector rod upward. Then, the cleaning brush can clean the particulate impurities to the movable opening of the baffle plate under the action of horizontal movement, which is convenient for subsequent centralized processing, thereby effectively removing impurities and avoiding accumulation on the filter plate, thereby ensuring the dust removal effect of the filter plate.

[0014] (2) A flow guide drive mechanism is provided. When the driving motor is started, it can simultaneously drive the rotation of the second driven wheel, and then drive the rotation of the rotating blades. In conjunction with the regulating valve, the gas after dust removal can be selectively re-filtered or transported to the desulfurization tower. There is no need to set up an additional pump power source, so that the gas can be automatically transported, which is beneficial to saving resources and protecting the environment.

[0015] (3) In the entire dust reduction and desulfurization method, the transfer pipe on the box is connected to the polluted gas generated by the combustion of biomass fuel, and then directly passes through the first filter plate and the second filter plate to form a circulation process with the outlet pipe and the inlet pipe, thereby playing a role of multiple adsorption and purification. By starting the drive motor, the filter holes on the filter plate are no longer blocked, and impurities can be automatically discharged, and the gas can flow automatically through the transmission mechanism. The whole method is reasonably designed, with strong structural integration performance, improved work efficiency, and good purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic flow diagram of the anti-clogging biomass fuel processing dust reduction and desulfurization method of the present invention; Figure 2 It is a schematic structural diagram of the anti-clogging biomass fuel processing dust reduction and desulfurization equipment of the present invention; Figure 3 It is a schematic diagram of the interior of the box of the present invention; Figure 4 The present invention Figure 3 A front view of Figure 5 The present invention Figure 3 A magnified image of point A; Figure 6 It is a schematic diagram of the connection between the driving wheel and the first bidirectional bevel gear of the present invention; Figure 7 It is a schematic diagram of the connection between the horizontal screw shaft and the vertical screw shaft of the present invention; Figure 8 It is a schematic diagram of the connection between the baffle and the box body of the present invention; Fig. 9 It is a schematic structural diagram of the second driven wheel of the present invention.

[0018] Figure numerals: 1. casing; 2. dust removal and cleaning mechanism; 3. driving motor; 4. driving wheel; 5. first conveyor belt; 6. first bidirectional bevel gear; 7. horizontal lead screw shaft; 8. second bidirectional bevel gear; 9. first driven wheel; 10. second conveyor belt; 11. vertical lead screw shaft; 12. first bevel gear; 13. partition; 14. first lead screw nut; 15. second lead screw nut; 16. cleaning brush; 17. frame; 18. push rod; 19. first filter plate; 20. second filter plate; 21. hinge; 22. baffle; 23. flow guide driving mechanism; 24. second bevel gear; 25. second driven wheel; 26. air inlet pipe; 27. rotating blades; 28. sealing gasket; 29. ​​air outlet pipe; 30. desulfurization tower. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Reference Manual Attached Figure 1 As shown, the anti-clogging biomass fuel processing dust reduction and desulfurization method comprises the following steps: S1.1. Connect the external fuel gas to the inside of the box body 1 through the transfer tube, start the drive motor 3, rotate the first bidirectional bevel gear 6, and through the gear meshing transmission, cooperate with the transmission effect of the second conveyor belt 10, the horizontal screw shafts 7 at the upper and lower ends drive the cleaning brush 16 on the first screw nut 14 to move horizontally back and forth, and the vertical screw shaft 11 drives the push rod 18 on the second screw nut 15 to move up and down back and forth; S1.2, when the push rod 18 moves up and down, it can push the impurities stuck in the filter hole to the first filter plate 19 and the second filter plate 20, and then clean them to the movable opening of the baffle 22 through the cleaning brush 16 and discharge them; S1.3, when the driving motor 3 is started, it can simultaneously drive the rotating blades 27 on the second driven wheel 25 to rotate, and cooperate with the regulating valve to re-filter the filtered gas or transport it to the desulfurization tower 30 for absorption and purification.

[0021] In the entire dust reduction and desulfurization method, the transfer tube on the box body 1 is connected to the polluted gas generated by the combustion of biomass fuel, and then directly passes through the first filter plate 19 and the second filter plate 20 to form a circulation process with the outlet pipe 29 and the inlet pipe 26, thereby playing a role of multiple adsorption and purification. By starting the drive motor 3, the filter holes on the filter plate are no longer blocked, and impurities can be automatically discharged, and the gas can flow automatically through the transmission mechanism. The whole method is reasonably designed, with strong structural integration performance, improved work efficiency, and good purification effect.

[0022] refer to Figure 2 and Figure 3 , anti-clogging biomass fuel processing dust reduction and desulfurization equipment, including: A box body 1, wherein the bottom of the box body 1 is fixed to the bottom plate by brackets, and a transfer pipe connected to the external fuel gas is opened on the top of the box body 1; The dust removal and cleaning mechanism 2 includes a driving motor 3 placed on the bottom plate, the output shaft of the driving motor 3 and the driving wheel 4 are connected by a first conveyor belt 5, the driving wheel 4 is placed on the cover, one end of the cover is fixed to the box body 1 through a bracket, one end of the driving wheel 4 is fixed to the first bidirectional bevel gear 6, the outer wall of the first bidirectional bevel gear 6 is meshed with a second bidirectional bevel gear 8 fixed on the horizontal screw shaft 7, and the central axis of the second bidirectional bevel gear 8 and the first driven wheel 9 are connected by a second conveyor belt 10; By extension, the top rod 18 on the frame 17 can be set at the upper and lower ends, so that when the frame 17 moves, the particulate impurities stuck on the filter plates at both ends can be pushed to the filter plates, and the first filter plate 19 and the second filter plate 20 can be set with filter holes from large to small, so that particulate impurities of different sizes can be filtered and adsorbed, thereby avoiding excessive filtering and adsorption pressure of a single filter plate, which reduces the purification effect.

[0023] refer to Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 The second bidirectional bevel gear 8 and one end of the rotating teeth on the first driven wheel 9 are meshed with a first bevel gear 12 fixed on the vertical screw shaft 11, the horizontal screw shaft 7 and the vertical screw shaft 11 are placed in the partition 13 on the inner wall of the box body 1, and the horizontal screw shaft 7 and the vertical screw shaft 11 are correspondingly spirally driven with a first screw nut 14 and a second screw nut 15, both ends of the first screw nut 14 are connected to the cleaning brush 16 through a first slider, and both ends of the second screw nut 15 are connected to the frame 17 through a second slider.

[0024] A push rod 18 is detachably mounted on the top of the frame 17, and a first filter plate 19 and a second filter plate 20 fixed to the inner wall of the box body 1 are formed between the push rod 18 and the cleaning brush 16, and the top of the push rod 18 is arranged in a cone shape, and the filter holes on the first filter plate 19 and the second filter plate 20 are connected to the push rod 18 in a size that is adapted to the size, and the first slider and the second slider are correspondingly connected with horizontal slide grooves and vertical slide grooves along the outer wall of the partition 13.

[0025] A dust reduction and cleaning mechanism 2 is set. After the driving motor 3 is started, it can drive the first bidirectional bevel gear 6 on the driving wheel 4 to rotate, and then drive the second bidirectional bevel gear 8 to rotate under the action of the gear meshing transmission. In conjunction with the second conveyor belt 10, the horizontal screw shaft 7 and the vertical screw shaft 11 at the upper and lower ends can be driven to rotate. With the help of the spiral transmission, the particulate impurities stuck in the filter hole can be ejected onto the first filter plate 19 and the second filter plate 20 by moving the ejector rod 18 upward. Then, the cleaning brush 16 can clean the particulate impurities to the movable opening of the baffle 22 under the action of horizontal movement, which is convenient for subsequent centralized processing, thereby effectively removing impurities, avoiding accumulation on the filter plate, and ensuring the dust reduction effect of the filter plate.

[0026] refer to Figure 3 , Figure 5 , Figure 6 and Fig. 9 The first filter plate 19 and the second filter plate 20 are symmetrically arranged relative to the center of the partition plate 13, and the outer wall edges of the horizontal screw shaft 7 and the vertical screw shaft 11 are provided with rolling grooves placed on the inner wall of the box body 1, and a baffle 22 rotatably connected to the hinge 21 is provided on one side of the outer wall of the box body 1 near the cleaning brush 16, and the outer wall of the baffle 22 is provided with a movable opening placed on the box body 1.

[0027] The anti-clogging biomass fuel processing dust reduction and desulfurization equipment also includes a flow guide drive mechanism 23, which includes a second bevel gear 24 meshing with the first bidirectional bevel gear 6 for transmission, and one end of the second bevel gear 24 is fixed on the second driven wheel 25. The outer wall extension of the second driven wheel 25 is connected to a rotating blade 27 placed inside the intake pipe 26, and the top of the intake pipe 26 extends to the first filter plate 19 and the air cavity at the top of the inner wall of the box body 1.

[0028] A sealing gasket 28 is installed on the second driven wheel 25 near the corner of the air inlet pipe 26, and a through hole connected to the second driven wheel 25 is opened at the center of the sealing gasket 28. One end of the air inlet pipe 26 is connected to an air outlet pipe 29 placed between the second filter plate 20 and the bottom end of the inner wall of the box body 1.

[0029] A flow guide drive mechanism 23 is provided. When the drive motor 3 is started, it can simultaneously drive the rotation of the second driven wheel 25, and then drive the rotation of the rotating blades 27. In conjunction with the regulating valve, the gas after dust reduction can be selectively re-filtered or transported to the desulfurization tower 30, and there is no need to set up an additional pump power source, so that the gas can be automatically transported, which is beneficial to saving resources and environmental protection.

[0030] refer to Figure 2 and Figure 4A desulfurization tower 30 placed on the bottom plate is installed at one end of the outlet pipe 29 through a three-way pipe. Regulating valves are installed correspondingly on the three-way pipe, the air inlet pipe 26 and the outlet pipe 29. A bearing connected to the output shaft of the drive motor 3 is provided at the bottom end of the box body 1, and the connection between the drive motor 3 and the bottom plate is locked and fixed by a bolt assembly.

[0031] The working principle of the desulfurization tower 30 mainly includes four steps: absorption, chemical reaction, oxidation and purification.

[0032] Absorption: The flue gas first enters the desulfurization tower 30, and the flue gas containing sulfur dioxide is fully contacted with the desulfurizer through spraying or other means, so that the sulfur dioxide is absorbed into the desulfurization liquid.

[0033] ‌Chemical reaction‌: In the desulfurization liquid, calcium hydroxide or sodium hydroxide will react chemically with sulfur dioxide to produce calcium sulfide or sodium sulfide. For example, calcium hydroxide reacts with sulfur dioxide to produce calcium sulfide and water.

[0034] ‌Oxidation‌: After a certain period of residence and mixing reaction, the formed sulfide dissolves in the desulfurization liquid and is oxidized to form sulfate. For example, calcium sulfide is oxidized to calcium sulfate.

[0035] ‌Purification‌: After the above steps, sulfur dioxide has been basically removed from the flue gas. The desulfurized flue gas passes through the desulfurization tower 30, reducing pollution to the environment.

[0036] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0037] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Anti-clogging biomass fuel processing dust reduction and desulfurization equipment, It is characterized in that include: A box body (1), wherein the bottom of the box body (1) is fixed to the bottom plate via brackets, and a transfer pipe connected to external fuel gas is provided at the top of the box body (1); A dust removal and cleaning mechanism (2), the dust removal and cleaning mechanism (2) comprising a driving motor (3) placed on a bottom plate, the output shaft of the driving motor (3) and a driving wheel (4) being connected in transmission via a first conveyor belt (5), the driving wheel (4) being externally placed on a cover, one end of the cover being fixed to a housing (1) via a bracket, one end of the driving wheel (4) being fixed to a first bidirectional bevel gear (6), the outer wall of the first bidirectional bevel gear (6) being meshed with a second bidirectional bevel gear (8) fixed to a horizontal screw shaft (7), the central axis of the second bidirectional bevel gear (8) and a first driven wheel (9) being connected in transmission via a second conveyor belt (10); The rotating teeth on the second bidirectional bevel gear (8) and the first driven wheel (9) are meshed with a first bevel gear (12) fixed on the vertical lead screw shaft (11), the horizontal lead screw shaft (7) and the vertical lead screw shaft (11) are both placed in a partition (13) on the inner wall of the box body (1), and the horizontal lead screw shaft (7) and the vertical lead screw shaft (11) are correspondingly spirally driven with a first lead screw nut (14) and a second lead screw nut (15), both ends of the first lead screw nut (14) are connected to the cleaning brush (16) through a first slider, and both ends of the second lead screw nut (15) are connected to the frame (17) through a second slider.

2. The anti-clogging biomass fuel processing dust reduction and desulfurization equipment according to claim 1, It is characterized in that A push rod (18) is detachably mounted on the top of the frame (17); a first filter plate (19) and a second filter plate (20) are formed between the push rod (18) and the cleaning brush (16) and are fixed to the inner wall of the box body (1); the top of the push rod (18) is arranged in a conical shape; the filter holes on the first filter plate (19) and the second filter plate (20) are connected to the push rod (18) in a size that is adapted to the size; and the first slider and the second slider are connected to a horizontal slide groove and a vertical slide groove along the outer wall of the partition (13) respectively.

3. The anti-clogging biomass fuel processing dust reduction and desulfurization equipment according to claim 2, It is characterized in that The first filter plate (19) and the second filter plate (20) are symmetrically arranged relative to the center of the partition plate (13), and the outer wall edges of the horizontal screw shaft (7) and the vertical screw shaft (11) are provided with rolling grooves disposed on the inner wall of the box body (1), and a baffle plate (22) rotatably connected to the hinge (21) is provided on one side of the outer wall of the box body (1) near the cleaning brush (16), and the outer wall of the baffle plate (22) is provided with a movable opening disposed on the box body (1).

4. The anti-clogging biomass fuel processing dust reduction and desulfurization equipment according to claim 1, It is characterized in that The invention also comprises a flow guide drive mechanism (23), the flow guide drive mechanism (23) comprising a second bevel gear (24) meshing with the first bidirectional bevel gear (6) for transmission, one end of the second bevel gear (24) being fixed to a second driven wheel (25), a rotating blade (27) disposed inside an air intake pipe (26) being connected to an extension of the outer wall of the second driven wheel (25), and the top end of the air intake pipe (26) extending to the first filter plate (19) and the air cavity at the top end of the inner wall of the housing (1).

5. The anti-clogging biomass fuel processing dust reduction and desulfurization equipment according to claim 4, It is characterized in that A sealing gasket (28) is installed on the second driven wheel (25) near the corner of the air inlet pipe (26), and a through hole connected to the second driven wheel (25) is opened at the center of the sealing gasket (28). One end of the air inlet pipe (26) is connected to an air outlet pipe (29) disposed between the second filter plate (20) and the bottom end of the inner wall of the box body (1).

6. The anti-clogging biomass fuel processing dust reduction and desulfurization equipment according to claim 5, It is characterized in that A desulfurization tower (30) placed on a bottom plate is installed at one end of the gas outlet pipe (29) via a three-way pipe, and regulating valves are correspondingly installed on the three-way pipe, the gas inlet pipe (26) and the gas outlet pipe (29).

7. The anti-clogging biomass fuel processing dust reduction and desulfurization equipment according to claim 1, It is characterized in that The bottom end of the box body (1) is provided with a bearing connected to the output shaft of the drive motor (3), and the connection between the drive motor (3) and the bottom plate is locked and fixed by a bolt assembly.

8. A method for dust reduction and desulfurization in biomass fuel processing that prevents clogging, applied to the dust reduction and desulfurization equipment for biomass fuel processing that prevents clogging according to any one of claims 1 to 7, It is characterized in that The steps include: S1.

1. The external fuel gas is connected to the inside of the box body (1) through the transfer tube, the drive motor (3) is started, the first bidirectional bevel gear (6) rotates, and through the gear meshing transmission, in conjunction with the transmission action of the second conveyor belt (10), the horizontal screw shafts (7) at the upper and lower ends drive the cleaning brush (16) on the first screw nut (14) to move horizontally back and forth, and the vertical screw shaft (11) drives the push rod (18) on the second screw nut (15) to move up and down back and forth; S1.2, when the push rod (18) moves up and down, the impurities stuck in the filter holes can be pushed out onto the first filter plate (19) and the second filter plate (20), and then cleaned to the movable opening of the baffle (22) by the cleaning brush (16) and discharged; S1.

3. When the driving motor (3) is started, it can simultaneously drive the rotating blades (27) on the second driven wheel (25) to rotate, and cooperate with the regulating valve to re-filter the filtered gas or transport it to the desulfurization tower (30) for absorption and purification.

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