Incinerator filtering device and filtering method thereof

Abstract

The invention relates to the field of flue gas purification, in particular to an incinerator filtering device and a filtering method.The incinerator filtering device comprises a filtering pipe, an upper net disc is slidably installed in the middle of the inner side of the filtering pipe, a lower net disc is fixedly installed on the portion, away from the lower portion of the upper net disc, of the inner side of the filtering pipe, and activated carbon is fully distributed between the lower net disc and the upper net disc; a plurality of net covers are installed at the upper end of the lower net disc in an annular array penetrating and sliding mode, the net covers are connected with the upper net disc, a driving rotating shaft is rotatably installed on the upper portion of the outer surface of the filter pipe and extends into the inner side of the filter pipe, a carrying shell is fixedly installed on the upper portion of the inner side of the filter pipe, and a connecting shaft is rotatably installed on the side face of the carrying shell; and cover pushing lugs extend from the opposite ends of the driving rotating shaft and the connecting shaft. The flue gas treatment effect is improved, normal flowing of flue gas is guaranteed, and meanwhile the phenomenon that the flue gas is not treated and discharged is avoided.

Description

Technical Field

[0001] The present invention relates to the field of flue gas purification, and particularly to an incinerator filtering device and a filtering method thereof. Background Art

[0002] During the operation of an incinerator, a large amount of flue gas is generated. At this time, to prevent the flue gas from polluting the environment, a filtering device is generally used to treat the flue gas. During the treatment process, first, the dust in the flue gas is filtered out by the filter screen on the filtering device, and then the pollutants in the flue gas are adsorbed and removed through an activated carbon layer.

[0003] However, during the actual treatment of flue gas by the filtering device, due to the tight fitting between the activated carbons in the activated carbon layer, the gaps between the activated carbons are reduced, resulting in the inability of pollutant molecules to quickly reach the surface of the activated carbon, thus reducing the adsorption efficiency of the activated carbon and seriously affecting the treatment effect. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the background art, and to propose an incinerator filtering device and a filtering method thereof.

[0005] To achieve the above object, the technical solution adopted by the present invention is: an incinerator filtering device, including a filtering tube, in the middle of the inner side of the filtering tube, an upper net plate is slidably installed, below the upper net plate and at the inner side of the filtering tube, a lower net plate is fixedly installed, between the lower net plate and the upper net plate, activated carbon is filled, at the upper end of the lower net plate, a plurality of net covers are slidably installed through the annular array, the net covers are connected to the upper net plate, at the upper part of the outer surface of the filtering tube, a driving rotating shaft is rotatably installed, the driving rotating shaft extends into the inner side of the filtering tube, at the upper part of the inner side of the filtering tube, a carrier shell is fixedly installed, at the side of the carrier shell, a connecting shaft is rotatably installed, at the relative ends of the driving rotating shaft and the connecting shaft, push cover ears are extended, between the two push cover ears, a connecting rod is connected, at the lower end of the connecting rod, a rod seat is rotatably installed, at the upper end of the upper net plate, a plurality of lower sealing pieces are fixedly installed through the annular array, the rod seat is connected to two of the lower sealing pieces, at the upper part of the inner side of the filtering tube and near the upper net plate, a gas sealing member is arranged, and at the lower part of the inner side of the filtering tube and away from the lower net plate, a filter screen is fixedly installed.

[0006] Preferably, at the upper end of the connecting rod, a connecting column is rotatably installed through, the connecting column is embedded through the end of the push cover ear, at the end of the rod seat, a ring body is fixedly installed, coaxially arranged in the inner side of the filtering tube is a central shaft, the ring body and the upper net plate are slidably installed on the outer surface of the central shaft, and the lower net plate is rotatably installed on the outer surface of the central shaft.

[0007] Preferably, the upper end of the wire mesh cover is conical, a connecting column extends from the middle of the upper end of the wire mesh cover, the end of the connecting column is fixed to the upper net disk, two protruding ears are symmetrically and fixedly installed on the outer surface of the ring body, the ends of the two protruding ears are respectively penetrated and inlaid with a disk frame, the lower ends of the two disk frames are respectively fixed to two of the lower sealing pieces, a guide sleeve is slidably installed on the outer surface of the disk frame, and the guide sleeve is fixed to the inner wall of the filter pipe.

[0008] Preferably, the connecting shaft penetrates through the inside of the carrier shell, the upper end of the central shaft penetrates through the inside of the carrier shell from the lower end of the carrier shell, the central shaft is rotationally matched with the carrier shell, conical gears are coaxially inlaid at the ends of the connecting shaft and the upper end of the central shaft, and the two conical gears are meshed with each other.

[0009] Preferably, a sealing door is fixedly installed in the middle of the outer surface of the filter pipe by screws, the sealing door corresponds to the space between the lower net disk and the upper net disk, a motor seat is fixedly installed on the upper part of the outer surface of the filter pipe, a servo motor is fixedly installed on the upper end of the motor seat, and the output end of the servo motor is fixed to the driving rotating shaft.

[0010] Preferably, the filter screen is rotatably installed on the outer surface of the central shaft, a brush plate is fixedly installed at the lower end of the central shaft, the brush plate is attached to the filter screen, a sheet frame is fixedly installed below the filter screen on the inner side of the filter pipe, a threaded column is screwed through the middle of the sheet frame, a plurality of upper connecting hoppers are fixedly installed in an annular array on the outer surface of the threaded column, a plurality of lower connecting hoppers are fixedly installed in an annular array below the upper connecting hoppers on the outer surface of the threaded column, and the plurality of upper connecting hoppers and the plurality of lower connecting hoppers are arranged in a staggered manner.

[0011] Preferably, the air sealing member includes a lower connecting sleeve arranged above the upper net disk on the inner side of the filter pipe, a plurality of upper sealing pieces are fixedly installed in an annular array on the outer surface of the lower connecting sleeve, the plurality of upper sealing pieces and the plurality of lower sealing pieces are arranged in a staggered manner, the lower connecting sleeve is slidably installed on the outer surface of the central shaft, a return spring is fixedly installed at the upper end of the lower connecting sleeve, an upper connecting sleeve is fixedly installed at the upper end of the return spring, the upper connecting sleeve is rotatably installed on the outer surface of the central shaft, two fixing frames are symmetrically and fixedly installed on the outer surface of the upper connecting sleeve, the ends of the fixing frames are fixed to the inner wall of the filter pipe, sheet columns are fixedly installed at the upper ends of two of the upper sealing pieces, the fixing frames are slidably installed on the outer surface of the sheet columns, and a positioning cap is coaxially inlaid at the upper end of the sheet column.

[0012] A filtering method for an incinerator filtering device is also provided, including the following steps: S1: The flue gas of the incinerator enters from the bottom of the filter pipe, and the soot in the flue gas is filtered out through the filter screen; S2: Subsequently, the flue gas continues to flow upward to enter the space between the lower wire mesh tray and the upper wire mesh tray. At this time, the driving shaft and the connecting shaft drive the push cover ear to rotate, which in turn drives the connecting rod to move, so as to drive the wire mesh cover on the upper wire mesh tray to move up and down continuously, so as to disperse the activated carbon and accelerate the adsorption of pollutants in the flue gas by the activated carbon. S3: The treated flue gas is discharged from the top of the filter pipe.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The rotating driving shaft and connecting shaft drive the push cover ear to rotate, which in turn drives the connecting rod to move, so as to drive the upper wire mesh tray to move up and down continuously. When the upper wire mesh tray moves upward, the space between the upper wire mesh tray and the lower wire mesh tray will increase, giving the activated carbon enough space to move. At the same time, the upward moving upper wire mesh tray will drive multiple wire mesh covers to move upward to lift and disperse the activated carbon around. When the upper wire mesh tray moves downward, it will drive the wire mesh cover to move downward and reset, so that the activated carbon will fall back to the top of the wire mesh cover again. This cycle is repeated to increase the voids between the activated carbon, enabling pollutants to quickly reach the surface of the activated carbon, enhancing the adsorption efficiency of the activated carbon. At the same time, when the activated carbon is dispersed, its pores can be fully exposed, increasing the contact opportunity between the adsorption sites and the pollutants, thereby further enhancing the adsorption efficiency of the activated carbon and improving the treatment effect on the flue gas.

[0014] 2. The rotating connecting shaft will also drive the brush plate on the central shaft to rotate through bevel gears to clean the filter screen, so that the attached soot can fall into the upper collecting hopper and the lower collecting hopper for collection, avoiding the blockage of the filter screen and ensuring the normal flow of the flue gas.

[0015] 3. When the upper wire mesh tray moves upward, it will top against the upper sealing piece to block the venting part of the upper wire mesh tray through the upper sealing piece, so that when the wire mesh cover moves upward to disperse the activated carbon, the flue gas will not directly pass through the activated carbon area and be discharged. When the upper wire mesh tray moves downward, it will push the flue gas passing through the activated carbon area, so that the flue gas is pressed into the activated carbon for adsorption treatment, avoiding the phenomenon of the flue gas being discharged without being treated. At the same time, under the operation of the upper sealing piece continuously blocking the venting part of the upper wire mesh tray and the upper wire mesh tray pressing the flue gas into the activated carbon, the time for the flue gas to pass through the activated carbon can be delayed. And the staggered upper collecting hopper and lower collecting hopper can hinder the flow of the flue gas while collecting the soot, further delaying the time for the flue gas to pass through the activated carbon, allowing the activated carbon to fully adsorb the pollutants in the flue gas, and further improving the treatment effect on the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of a filter device for an incinerator according to the present invention; Figure 2 is an internal view of the filter pipe of a filter device for an incinerator according to the present invention; Figure 3For the present invention Figure 2 Enlarged view of A in the present invention; Figure 4 Schematic diagram of the filter screen of an incinerator filtering device according to the present invention; Figure 5 Internal view of the carrier shell of an incinerator filtering device according to the present invention; Figure 6 Distribution view of the upper connection hopper and the lower connection hopper of an incinerator filtering device according to the present invention; Figure 7 Schematic diagram of the reset spring of an incinerator filtering device according to the present invention; Figure 8 Schematic diagram of the upper net plate of an incinerator filtering device according to the present invention; Figure 9 Schematic diagram of the upper sealing piece of an incinerator filtering device according to the present invention.

[0017] In the figure: 1. Filter pipe; 2. Servo motor; 3. Sealing door; 4. Central shaft; 5. Filter screen; 6. Brush plate; 7. Upper connection hopper; 8. Sheet holder; 9. Lower connection hopper; 10. Threaded column; 11. Carrier shell; 12. Reset spring; 13. Lower net plate; 14. Net cover; 15. Driving rotating shaft; 16. Connecting shaft; 17. Pushing cover ear; 18. Connecting column; 19. Connecting rod; 20. Guide sleeve; 21. Rod seat; 22. Ring body; 23. Upper connecting sleeve; 24. Lower connecting sleeve; 25. Upper sealing piece; 26. Sheet column; 27. Disk holder; 28. Extended ear; 29. Lower sealing piece; 30. Upper net plate; 31. Connecting and fixing column; 32. Fixed frame; 33. Positioning cap; 34. Bevel gear; 35. Motor base. Detailed implementation manners

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0019] As Figures 1-9An incinerator filtration device shown in the figure includes a filtration pipe 1. A upper net disk 30 is slidably installed in the middle of the inner side of the filtration pipe 1. A lower net disk 13 is fixedly installed below the inner side of the filtration pipe 1 away from the upper net disk 30. Activated carbon is filled between the lower net disk 13 and the upper net disk 30. The upper net disk 30 and the lower net disk 13 play a role in carrying the activated carbon. A plurality of net covers 14 are slidably installed through the upper end of the lower net disk 13 in an annular array. The net covers 14 are connected to the upper net disk 30. A driving rotating shaft 15 is rotatably installed on the upper part of the outer surface of the filtration pipe 1. The driving rotating shaft 15 extends into the inner side of the filtration pipe 1. A carrier shell 11 is fixedly installed on the upper part of the inner side of the filtration pipe 1. A connecting shaft 16 is rotatably installed on the side surface of the carrier shell 11. The carrier shell 11 plays a role in carrying the connecting shaft 16. Pushing cover ears 17 extend from the opposite ends of the driving rotating shaft 15 and the connecting shaft 16. A connecting rod 19 is connected between the two pushing cover ears 17. The rotating driving rotating shaft 15 and connecting shaft 16 drive the pushing cover ears 17 to rotate, and then drive the connecting rod 19 to move, so as to drive the upper net disk 30 to move up and down continuously, and then drive the plurality of net covers 14 to move up and down continuously, so as to continuously lift the activated carbon and disperse it around. A rod seat 21 is rotatably installed at the lower end of the connecting rod 19. A plurality of lower sealing pieces 29 are fixedly installed in an annular array at the upper end of the upper net disk 30. The rod seat 21 is connected to two of the lower sealing pieces 29. The lower sealing pieces 29 play a role in blocking some air vent parts on the upper net disk 30. An air sealing member is arranged above the upper net disk 30 on the inner side of the filtration pipe 1. A filter screen 5 is fixedly installed below the inner side of the filtration pipe 1 away from the lower net disk 13. The filter screen 5 plays a role in filtering the soot in the flue gas.

[0020] A connecting column 18 is rotatably installed through the upper end of the connecting rod 19. The connecting column 18 is embedded in the end of the pushing cover ear 17. The connecting column 18 plays a role in connecting the connecting rod 19 and the pushing cover ear 17. A ring body 22 is fixedly installed at the end of the rod seat 21. A central shaft 4 is coaxially arranged on the inner side of the filtration pipe 1. The ring body 22 plays a connecting role. The ring body 22 and the upper net disk 30 are slidably installed on the outer surface of the central shaft 4. The lower net disk 13 is rotatably installed on the outer surface of the central shaft 4.

[0021] The upper end of the net cover 14 is arranged in a conical shape, which is convenient for the activated carbon at the upper end of the net cover 14 to fall. A connecting column 31 extends from the middle of the upper end of the net cover 14. The end of the connecting column 31 is fixed to the upper net disk 30. The connecting column 31 plays a role in fixing the net cover 14 and the upper net disk 30 together. Two protruding ears 28 are symmetrically fixedly installed on the outer surface of the ring body 22. The ends of the two protruding ears 28 are respectively embedded with a disk frame 27. The protruding ears 28 and the disk frame 27 play a connecting role. The lower ends of the two disk frames 27 are respectively fixed to two of the lower sealing pieces 29. A guide sleeve 20 is slidably installed on the outer surface of the disk frame 27. The guide sleeve 20 is fixed to the inner wall of the filtration pipe 1. The guide sleeve 20 plays a role in guiding the disk frame 27.

[0022] The connecting shaft 16 passes through the interior of the carrier shell 11, and the upper end of the central shaft 4 passes through the interior of the carrier shell 11 from the lower end of the carrier shell 11. The central shaft 4 and the carrier shell 11 rotate in cooperation. The end of the connecting shaft 16 and the upper end of the central shaft 4 are coaxially inlaid with a bevel gear 34. The carrier shell 11 serves to cover and protect the bevel gear 34. The two bevel gears 34 are meshed with each other, and the bevel gear 34 serves to connect the connecting shaft 16 and the central shaft 4 together.

[0023] A sealing door 3 is fixedly installed on the middle part of the outer surface of the filter tube 1 by screws. The sealing door 3 corresponds to between the lower net disk 13 and the upper net disk 30. By removing the sealing door 3, the activated carbon between the lower net disk 13 and the upper net disk 30 can be easily replaced. A motor seat 35 is fixedly installed on the upper part of the outer surface of the filter tube 1. A servo motor 2 is fixedly installed on the upper end of the motor seat 35. The motor seat 35 plays a role of fixing the servo motor 2. The output end of the servo motor 2 is fixed to the driving shaft 15, and the servo motor 2 plays a role of driving the driving shaft 15 to rotate at a low speed.

[0024] The filter screen 5 is rotatably mounted on the outer surface of the central shaft 4, and a brush plate 6 is fixedly mounted on the lower end of the central shaft 4. The brush plate 6 fits on the filter screen 5. The central shaft 4 can drive the brush plate 6 to rotate to clean the filter screen 5, so that the attached smoke and dust can fall into the upper connecting bucket 7 and the lower connecting bucket 9 to be collected to avoid clogging of the filter screen 5. A sheet frame 8 is fixedly mounted on the inner side of the filter tube 1 near the bottom of the filter screen 5. A threaded column 10 is screwed through the middle of the sheet frame 8. The sheet frame 8 plays a role in bearing the threaded column 10. The outer surface of the threaded column 10 is fixedly mounted with a circular array. There are multiple upper buckets 7, and multiple lower buckets 9 are fixedly installed in a circular array near the lower surface of the upper bucket 7. By rotating the threaded column 10, the threaded column 10 and the sheet frame 8 can be separated, and then the upper bucket 7 and the lower bucket 9 can be removed to facilitate the processing of the collected smoke. The multiple upper buckets 7 and the multiple lower buckets 9 are staggered. On the one hand, it is convenient to receive the fallen smoke, and on the other hand, it can hinder the flow of smoke to delay the time for the smoke to pass through the activated carbon, so that the activated carbon can fully adsorb the pollutants in the smoke.

[0025] The air sealing member includes a lower connecting sleeve 24 disposed inside the filter tube 1 above the upper mesh plate 30. A plurality of upper sealing plates 25 are fixedly installed in an annular array on the outer surface of the lower connecting sleeve 24. The lower connecting sleeve 24 serves to carry the upper sealing plates 25. The plurality of upper sealing plates 25 and the plurality of lower sealing plates 29 are arranged in a staggered manner. The upper sealing plates 25 can seal the venting parts on the upper mesh plate 30 that are not blocked by the lower sealing plates 29. The lower connecting sleeve 24 is slidably installed on the outer surface of the central shaft 4. A return spring 12 is fixedly installed at the upper end of the lower connecting sleeve 24. The return spring 12 can deform to adapt to the up and down movement of the upper mesh plate 30, and at the same time ensure that the upper sealing plates 25 press on the upper mesh plate 30 for sealing. The upper end of the return spring 12 is fixedly installed with an upper connecting sleeve 23. The upper connecting sleeve 23 is rotatably installed on the outer surface of the central shaft 4. The upper connecting sleeve 23 serves to carry the return spring 12. Two fixing brackets 32 are symmetrically and fixedly installed on the outer surface of the upper connecting sleeve 23. The ends of the fixing brackets 32 are fixed to the inner wall of the filter tube 1. The fixing brackets 32 serve to fix the upper connecting sleeve 23. Columns 26 are fixedly installed at the upper ends of two of the upper sealing plates 25. The fixing brackets 32 are slidably installed on the outer surface of the columns 26. The columns 26 serve to prevent the upper sealing plates 25 from rotating. A positioning cap 33 is coaxially inlaid at the upper end of the column 26. The positioning cap 33 can reset the downward movement height of the upper sealing plates 25, so that when the upper mesh plate 30 moves down to the end of the stroke, the upper sealing plates 25 and the upper mesh plate 30 can be separated, allowing the flue gas to be discharged from the gap between the upper sealing plates 25 and the upper mesh plate 30.

[0026] A filtering method for an incinerator filtering device is also provided, including the following steps: S1: The flue gas of the incinerator enters from the bottom of the filter tube 1 and the soot in the flue gas is filtered out by the filter mesh 5; S2: Subsequently, the flue gas continues to flow upward to enter between the lower mesh plate 13 and the upper mesh plate 30. At this time, the driving shaft 15 and the connecting shaft 16 drive the push cover ear 17 to rotate, and then drive the connecting rod 19 to move, so as to drive the mesh cover 14 on the upper mesh plate 30 to continuously move up and down to disperse the activated carbon, so as to accelerate the adsorption of pollutants in the flue gas by the activated carbon; S3: The treated flue gas is discharged from the top of the filter tube 1.

[0027] During the treatment process, the flue gas enters from the bottom of the filter tube 1 and passes through the filter screen 5 to filter out the soot in the flue gas. At the same time, the servo motor 2 operates to drive the driving shaft 15 and the connecting shaft 16 to rotate. The rotating connecting shaft 16 drives the brush plate 6 on the central shaft 4 to rotate through the bevel gear 34, so as to clean the filter screen 5, so that the attached soot can fall into the upper connecting hopper 7 and the lower connecting hopper 9 to be collected, so as to avoid the blockage of the filter screen 5. Subsequently, the filtered flue gas enters the activated carbon between the lower mesh plate 13 and the upper mesh plate 30, and the pollutants in the flue gas are adsorbed through the activated carbon. During this process, the rotating driving shaft 15 and connecting shaft 16 will also drive the push cover ear 17 to rotate, and then drive the connecting rod 19 to move, so as to drive the upper mesh plate 30 to move up and down continuously. When the upper mesh plate 30 moves up, the space between the upper mesh plate 30 and the lower mesh plate 13 will increase, allowing the activated carbon to have enough movement space. At the same time, the upward moving upper mesh plate 30 will drive multiple mesh covers 14 to move up, so as to lift the activated carbon and disperse it around. When the upper mesh plate 30 moves down, it will drive the mesh cover 14 to move down and reset, so that the activated carbon falls back to the top of the mesh cover 14 again. This cycle is used to increase the gap between the activated carbons, so that the pollutants can quickly reach the surface of the activated carbon, so as to enhance the adsorption efficiency of the activated carbon. At the same time, when the activated carbon is dispersed, its pores can be fully exposed, so as to increase the contact opportunity between the adsorption sites and the pollutants, thereby further enhancing the adsorption efficiency of the activated carbon. When the upper mesh plate 30 moves up, it will top against the upper sealing piece 25, so as to block the venting part of the upper mesh plate 30 through the upper sealing piece 25, so that when the mesh cover 14 moves up and disperses the activated carbon, the flue gas will not directly pass through the activated carbon area and be discharged. When the upper mesh plate 30 moves down, it will push the flue gas passing through the activated carbon area, so that the flue gas is pressed into the activated carbon for adsorption treatment, so as to avoid the phenomenon that the flue gas is discharged without being treated. At the same time, under the operation of the upper sealing piece 25 continuously blocking the venting part of the upper mesh plate 30 and the upper mesh plate 30 continuously pressing the flue gas into the activated carbon, the time for the flue gas to pass through the activated carbon can be delayed. And the misaligned upper connecting hopper 7 and lower connecting hopper 9 can hinder the flow of the flue gas while collecting the soot, so as to further delay the time for the flue gas to pass through the activated carbon, allowing the activated carbon to fully adsorb the pollutants in the flue gas. Then, the adsorbed flue gas flows upward and is discharged from the top of the filter tube 1.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An incinerator filter device, comprising a filter tube (1), characterized in that: A net plate (30) is slidably mounted on the middle part of the inner side of the filter tube (1), a lower net plate (13) is fixedly mounted on the inner side of the filter tube (1) away from the net plate (30), the space between the lower net plate (13) and the net plate (30) is filled with activated carbon, a plurality of net covers (14) are slidably mounted in an annular array through the upper end of the lower net plate (13), the net covers (14) are connected to the net plate (30), a drive shaft (15) is rotatably mounted on the upper part of the outer surface of the filter tube (1), the drive shaft (15) extends into the inner side of the filter tube (1), a carrier shell (11) is fixedly mounted on the upper part of the inner side of the filter tube (1), the carrier shell (11) A connecting shaft (16) is rotatably mounted on the side of the filter tube (11), and push cover ears (17) are extended from the opposite ends of the driving shaft (15) and the connecting shaft (16), and a connecting rod (19) is connected between the two push cover ears (17), and a rod seat (21) is rotatably mounted on the lower end of the connecting rod (19), and a plurality of lower sealing plates (29) are fixedly mounted in an annular array on the upper end of the net plate (30), and the rod seat (21) is connected to two of the lower sealing plates (29), and an air sealing member is arranged on the inner side of the filter tube (1) near the upper side of the net plate (30), and a filter screen (5) is fixedly mounted on the inner side of the filter tube (1) away from the lower side of the lower net plate (13).

2. The incinerator filter device according to claim 1, characterized in that: The upper end of the connecting rod (19) is penetrated by a connecting column (18) rotatably mounted thereon, the connecting column (18) being penetrated by the end of the push cover ear (17), the end of the rod seat (21) being fixedly mounted with a ring body (22), the inner side of the filter tube (1) being coaxially provided with a central axis (4), the ring body (22) and the upper net plate (30) being slidably mounted on the outer surface of the central axis (4), and the lower net plate (13) being rotatably mounted on the outer surface of the central axis (4).

3. The incinerator filter device according to claim 2, characterized in that: The upper end of the mesh cover (14) is arranged in a cone shape. A connecting column (31) extends from the middle of the upper end of the mesh cover (14). The end of the connecting column (31) is fixed to the net plate (30). Two protruding ears (28) are symmetrically fixedly mounted on the outer surface of the ring body (22). The ends of the two protruding ears (28) are penetrated and inlaid with a plate frame (27). The lower ends of the two plate frames (27) are respectively fixed to two lower sealing sheets (29). A guide sleeve (20) is slidably mounted on the outer surface of the plate frame (27). The guide sleeve (20) is fixed to the inner wall of the filter tube (1).

4. The incinerator filter device according to claim 3, characterized in that: The connecting shaft (16) passes through the interior of the carrier shell (11); the upper end of the central shaft (4) passes through the interior of the carrier shell (11) from the lower end of the carrier shell (11); the central shaft (4) and the carrier shell (11) are rotatably matched; the end of the connecting shaft (16) and the upper end of the central shaft (4) are coaxially inlaid with a bevel gear (34); the two bevel gears (34) are meshed.

5. The incinerator filter device according to claim 4, characterized in that: A sealing door (3) is fixedly mounted on the middle of the outer surface of the filter tube (1) by means of screws, the sealing door (3) corresponding to between the lower net plate (13) and the upper net plate (30), a motor seat (35) is fixedly mounted on the upper portion of the outer surface of the filter tube (1), a servo motor (2) is fixedly mounted on the upper end of the motor seat (35), and the output end of the servo motor (2) is fixed to the driving shaft (15).

6. The incinerator filter device according to claim 5, characterized in that: The filter screen (5) is rotatably mounted on the outer surface of the central shaft (4); a brush plate (6) is fixedly mounted on the lower end of the central shaft (4); the brush plate (6) is fitted on the filter screen (5); a sheet frame (8) is fixedly mounted on the inner side of the filter tube (1) near the bottom of the filter screen (5); a threaded column (10) is screwed through the middle of the sheet frame (8); a plurality of upper connecting buckets (7) are fixedly mounted in an annular array on the outer surface of the threaded column (10); a plurality of lower connecting buckets (9) are fixedly mounted in an annular array on the outer surface of the threaded column (10) near the bottom of the upper connecting bucket (7); the plurality of upper connecting buckets (7) and the plurality of lower connecting buckets (9) are arranged in a staggered manner.

7. The incinerator filter device according to claim 6, characterized in that: The air sealing member comprises a lower connecting sleeve (24) arranged on the inner side of the filter tube (1) near the top of the net plate (30); a plurality of upper sealing sheets (25) are fixedly mounted in an annular array on the outer surface of the lower connecting sleeve (24); the plurality of upper sealing sheets (25) and the plurality of lower sealing sheets (29) are arranged in a staggered manner; the lower connecting sleeve (24) is slidably mounted on the outer surface of the central shaft (4); a return spring (12) is fixedly mounted on the upper end of the lower connecting sleeve (24); and the upper end of the return spring (12) is fixedly mounted An upper connecting sleeve (23) is provided, the upper connecting sleeve (23) being rotatably mounted on the outer surface of the central shaft (4), two fixing frames (32) being symmetrically fixedly mounted on the outer surface of the upper connecting sleeve (23), the ends of the fixing frames (32) being fixed to the inner wall of the filter tube (1), wherein the upper ends of the two upper sealing sheets (25) are fixedly mounted with sheet columns (26), the fixing frames (32) being slidably mounted on the outer surface of the sheet columns (26), and the upper ends of the sheet columns (26) are coaxially inlaid with positioning caps (33).

8. A filtering method for an incinerator filtering device, applied to an incinerator filtering device according to claim 7, characterized in that: The following steps are involved: S1: The flue gas from the incinerator enters from the bottom of the filter tube (1) and the smoke dust in the flue gas is filtered out by the filter screen (5); S2: The flue gas then continues to flow upward to enter between the lower net plate (13) and the upper net plate (30). At this time, the driving shaft (15) and the connecting shaft (16) drive the cover push ear (17) to rotate, thereby driving the connecting rod (19) to move, so as to drive the net cover (14) on the upper net plate (30) to move up and down continuously, so as to disperse the activated carbon, thereby accelerating the activated carbon to adsorb pollutants in the flue gas; S3: The treated flue gas is discharged through the top of the filter tube (1).

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