Filtering device for ultra-clean emission of flue gas

Abstract

The invention discloses a filter device for ultra-clean emission of flue gas, and relates to the technical field of flue gas filtration, the filter device comprises an upper box body and a lower box body which are arranged on a bag-type dust collector, the upper box body is communicated with a clean gas outlet, the lower box body is communicated with a dust gas inlet and an ash hopper, a pattern plate is arranged in the upper box body, a plurality of mounting holes are formed in the pattern plate, and the mounting holes are communicated with the lower box body. And a circular ring is arranged in the mounting hole. According to the filtering device for ultra-clean smoke emission, during filtering, the filtering bag frame and the filtering bag can reciprocate and rotate in a reciprocating mode, the filtering bag can be evenly stressed, surface airflow distribution is more balanced, the phenomena of local dust accumulation, erosive wear and bag pasting are effectively avoided, meanwhile, the falling effect of dust on the surface of the filtering bag can be enhanced, and the service life of the filtering bag is prolonged. According to the back-flushing dust removal device, the filtering efficiency and effect are guaranteed, in addition, after back-flushing dust removal, back-flushing dust on the lower portion can be pushed downwards and fall into the dust hopper, the situation that the back-flushing dust is attached to the filter bag again is reduced, the back-flushing effect is guaranteed, and then the subsequent filtering efficiency and effect are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of flue gas filtration technology, specifically to a filtration device for ultra-clean flue gas emission. Background Technology

[0002] Baghouse dust collectors, as core equipment for industrial flue gas dust removal, are a type of filtration device for ultra-clean flue gas emissions. They are widely used in industries such as power, metallurgy, and chemicals, and are applied in advanced environmental protection industries to reduce air pollution. During operation, dust-laden gas enters the housing, and large dust particles first fall into the ash hopper due to gravity. The airflow passes through the filter bags, where dust is intercepted on the outer surface, and clean gas passes through the filter material and exits into the clean air chamber. As the dust layer thickens, the system pressure difference gradually increases. When the pressure difference reaches a set value, the cleaning system is activated (the mainstream method is pulse jet cleaning, but mechanical vibration and reverse air blowing are also available). Compressed air is instantaneously jetted, causing the filter bags to vibrate violently, causing the dust layer to fall into the ash hopper and then be discharged by the ash conveying device, restoring the filter bags' filtration capacity.

[0003] In conventional baghouse dust collectors, the tube sheet is rigidly fixed. During filtration, dust easily adheres to the filter bags. At the same time, uneven airflow distribution on the filter bag surface leads to localized wear and damage, which not only reduces filtration efficiency, increases operating resistance and energy consumption, but also shortens the filter bag's service life, affecting filtration efficiency and effectiveness. Furthermore, after cleaning, the detached dust can easily be carried by airflow and re-adhere to the filter bag surface, also affecting filtration efficiency and effectiveness.

[0004] Therefore, we propose a filtration device for ultra-clean flue gas emissions. Summary of the Invention

[0005] The purpose of this invention is to provide a filtration device for ultra-clean flue gas emissions to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a filtration device for ultra-clean flue gas emission, comprising an upper chamber and a lower chamber disposed on a bag filter. The upper chamber is connected to a clean gas outlet, and the lower chamber is connected to a dust inlet and a dust hopper. A tube sheet is disposed inside the upper chamber, and multiple mounting holes are provided on the tube sheet. A circular ring is disposed in each mounting hole, and a filter bag frame is fixedly connected to the bottom of the circular ring. Filter bags are disposed on the side walls of the filter bag frame. A jet cleaning module is disposed inside the upper chamber. The circular ring is rotatably connected to the mounting holes, and the rotation of the circular ring is driven by a drive assembly. An annular plate is fixedly connected to the inner wall of the upper chamber. The tube sheet is slidably connected to the top of the annular plate through a moving mechanism, and the tube sheet is connected to the top of the annular plate through a reset mechanism. The movement of the tube sheet is pushed by the moving mechanism. A hollow lifting plate is connected to the bottom of the tube sheet through a lifting mechanism. Multiple through holes are provided at the bottom of the lifting plate, and an annular airbag is fixedly inserted into each through hole. The annular airbag communicates with the interior of the lifting plate through a flow channel.

[0007] Preferably, the moving mechanism includes a first stop fixedly connected to the top of the tube sheet, and a cam connected to the top of the annular plate via a drive mechanism. The cam can slide on the side wall of the first stop, and a reset mechanism is provided between the tube sheet and the annular plate.

[0008] By adopting the above technical solution, the cam is driven to rotate by the drive mechanism. When the tip of the cam abuts against the side wall of the first stop, it can push the flower plate to move away from the support. When the tip of the cam passes the side wall of the first stop, the flower plate can move and reset under the action of the reset mechanism. By repeating this process, the flower plate can move back and forth.

[0009] Preferably, the reset mechanism includes a first fixing block fixedly connected to the top of the annular plate, and the side wall of the first fixing block is connected to a first connecting block via a first spring telescopic rod, and the first connecting block is fixed to the top of the flower plate.

[0010] By adopting the above technical solution, the movement of the flower plate is guided and reset.

[0011] Preferably, the driving mechanism includes a bracket fixedly connected to the top of the annular plate, and a first motor is fixedly connected to the top of the bracket. The output end of the first motor is fixedly connected to a drive shaft, and a cam is fixedly sleeved on the side wall of the drive shaft.

[0012] By adopting the above technical solution, the first motor is started, and the cam is driven to rotate through the drive shaft.

[0013] Preferably, the driving assembly includes a driving ring fixedly connected to the top of the ring, and the top of the annular plate is connected to an extrusion plate via a reset assembly. The sidewall of the extrusion plate is provided with anti-slip texture, and the driving ring is able to roll on the sidewall of the extrusion plate.

[0014] By adopting the above technical solution, when the tube sheet moves back and forth, it can drive the drive ring to move synchronously. When the drive ring slides on the side wall of the extrusion plate, it can drive the drive ring to rotate. At the same time, the ring drives the filter bag frame and filter bag to rotate back and forth, which can make the filter bag circumferential force uniform and the surface airflow distribution more balanced, effectively avoiding local dust accumulation, erosion wear and bag clogging. The periodic disturbance generated during the rotation can enhance dust shedding, reduce the frequency of dust removal and energy consumption, and extend the service life of the filter bag. At the same time, it can improve the uniformity and stability of filtration, ensure dust removal efficiency, and has a simple structure that is easy to achieve continuous online operation.

[0015] Preferably, the reset assembly includes a second fixing block fixedly connected to the top of the annular plate, and the side wall of the second fixing block is connected to a second connecting block via a second spring telescopic rod, the second connecting block being fixed to the top of the extrusion plate.

[0016] By adopting the above technical solution, under the action of the second spring telescopic rod, the extrusion plate and the side wall of the drive ring can always be kept in contact. Furthermore, under the action of the anti-slip texture, the friction can be increased, thereby ensuring the effect of driving its rotation.

[0017] Preferably, the lifting mechanism includes two sets of symmetrically arranged fixing rods fixedly connected to the bottom of the ceiling plate, with two fixing rods in each set. The lifting plate is sleeved on the side wall of the fixing rods. A second stop block is fixedly connected to the lower end of the fixing rods, and a third fixing block is fixedly connected to the top of the ceiling plate. A second motor is fixedly connected to the side wall of the third fixing block, and a rotating shaft is fixedly connected to the output end of the second motor. A winding roller is fixedly sleeved on the side wall of the rotating shaft, and a pull rope is wound on the winding roller. The lower end of the pull rope is fixed to the top of the lifting plate.

[0018] By adopting the above technical solution, when the filter bag needs to be back-blown cleaned, the filter bag is back-blown by the spray module. After the back-blowing is completed, the second motor is started to reverse. At the same time, the winding roller is driven to reverse through the rotating shaft. At this time, the pull rope can be gradually loosened, and the lifting plate can move down along the fixed rod under the action of gravity.

[0019] Preferably, the bottom of the lifting plate is provided with an inflation mechanism for inflating the annular airbag. The inflation mechanism includes an air storage cover fixedly connected to the bottom of the lifting plate, and the air storage cover is connected to the interior of the lifting plate through a connecting pipe. The annular airbag is connected to the interior of the lifting plate through an air passage. A mounting block is fixedly connected to the top of the air storage cover. An electromagnet is fixedly connected to the side wall of the mounting block. A piston plate is connected to the side wall of the mounting block through a third spring telescopic rod. An iron block is fixedly connected to the side wall of the piston plate. The bottom of the lifting plate is provided with multiple cleaning mechanisms for cleaning the cloth bag.

[0020] By adopting the above technical solution, during use, the filter bag is installed on the filter bag frame. Then, the flue gas is introduced into the lower chamber through the dust gas inlet for filtration. Next, the electromagnet is de-energized, and the iron block is no longer attracted. At this time, the piston plate can move away from the mounting block under the action of the third spring telescopic rod. At this time, the hydraulic oil temporarily stored in the gas storage hood can be squeezed. The hydraulic oil can enter the lifting plate through the connecting pipe, and then enter the through hole through the flow channel. After the through hole expands, it can abut against the opening of the filter bag, which can play an auxiliary role in fixing and sealing, making it more stable and reliable.

[0021] Preferably, the cleaning mechanism includes multiple fixed rings fixedly connected to the bottom of the lifting plate, and multiple brushes are fixedly connected to the inner sidewall of the fixed rings.

[0022] By adopting the above technical solution, when the lifting plate moves downward, the fixed ring can drive the brush to move downward synchronously, and the brush can clean the surface of the filter bag.

[0023] Preferably, the top of the ash hopper is provided with a vibration mechanism, which includes a support plate fixedly connected to the top of the ash hopper, and a lifting block is connected to the bottom of the support plate via a fourth spring telescopic rod. The bottom of the lifting block is connected to multiple striking heads via a fifth spring telescopic rod. A connecting frame is fixedly connected to the side wall of the lifting block, and a pushing block is fixedly connected to the side wall of the connecting frame. Multiple trapezoidal blocks are fixedly connected to the bottom of the second stop block, and the pushing block can slide on the side wall of the trapezoidal blocks.

[0024] By adopting the above technical solution, when the flower board moves back and forth, the trapezoidal block can be moved by the fixed rod and the second stop. When the pushing block abuts against the trapezoidal block, it can push the pushing block to move downward. At the same time, the lifting block is moved downward by the connecting frame. The fourth spring telescopic rod is compressed. When the pushing block passes the trapezoidal block, the lifting block can move upward and reset under the action of the fourth spring telescopic rod. By repeating this process, the lifting block can move up and down back and forth.

[0025] When the lifting block moves downward, it drives the striking head downward through the fifth spring telescopic rod. When the striking head comes into contact with the ash hopper, the fifth spring telescopic rod is gradually compressed, thereby reciprocatingly striking and vibrating the ash hopper. This vibration effect effectively promotes the smooth falling of dust in the ash hopper, preventing dust from adhering, accumulating, bridging, and clogging the inner wall of the ash hopper, ensuring continuous and stable ash discharge. At the same time, it can reduce the problem of poor ash discharge caused by dust accumulation, reduce the workload of cleaning blockages and the risk of equipment failure, improve the overall operational reliability of the dust collector, and has a simple structure that is easy to automate.

[0026] In summary: Advantage 1: During filtration, the filter bag frame and filter bag can move and rotate back and forth, which can make the filter bag evenly stressed and the surface airflow distribution more even, effectively avoiding local dust accumulation, scouring and wear and bag clogging. At the same time, it can enhance the dust removal effect on the surface of the filter bag, ensuring filtration efficiency and effect. Advantage 2: After backflushing, the dust from the backflushing can be pushed downwards and fall into the ash hopper, reducing the re-adhesion of dust on the filter bags after backflushing, ensuring the effect of backflushing, and thus ensuring the efficiency and effect of subsequent filtration. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure from another perspective of the present invention; Figure 3 This is a partial cross-sectional view of the upper housing in this invention; Figure 4 This is a partial cross-sectional view of the upper and lower boxes in this invention. Figure 5 This is a schematic diagram of the overall structure of the perforated plate and the lifting plate in this invention; Figure 6 This is a schematic diagram of the inflation mechanism in this invention; Figure 7 This is a schematic diagram of the structure of the reset mechanism and the moving mechanism in this invention; Figure 8 This is a schematic diagram of the cleaning mechanism in this invention; Figure 9 This is a schematic diagram of the vibration mechanism in this invention; Figure 10 for Figure 7 Enlarged view of point A in the middle; Figure 11 for Figure 7 Enlarged view at point B in the middle; Figure 12 This is a schematic diagram of the lifting plate in this invention.

[0028] In the diagram: 101. Upper housing; 102. Lower housing; 103. Ash hopper; 104. Dust inlet; 105. Clean air outlet; 106. Tube plate; 107. Mounting hole; 108. Ring; 109. Filter bag frame; 110. Pulse jet module; 201. First fixing block; 202. First spring telescopic rod; 203. First connecting block; 301. First stop block; 302. Cam; 401. Bracket; 402. First motor; 403. Drive shaft; 501. Drive ring; 502. Extrusion plate; 503. Anti-slip texture; 601. Second connecting block; 602. Second spring telescopic rod; 603. Second fixing block; 701. Fixing ring; 702. Brush ; 801, Fixed rod; 802, Second stop block; 803, Third fixed block; 804, Second motor; 805, Rotating shaft; 806, Winding roller; 807, Pull rope; 901, Air storage cover; 902, Connecting pipe; 903, Piston plate; 904, Mounting block; 905, Third spring telescopic rod; 906, Electromagnet; 907, Iron block; 1001, Support plate; 1002, Fourth spring telescopic rod; 1003, Lifting block; 1004, Fifth spring telescopic rod; 1005, Striking head; 1006, Connecting frame; 1007, Pushing block; 1008, Trapezoidal block; 11, Annular plate; 12, Lifting plate; 13, Through hole; 14, Annular airbag. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0030] Please see Figures 1-12The diagram shows a filtration device for ultra-clean flue gas emission, comprising an upper housing 101 and a lower housing 102 mounted on a bag filter. The upper housing 101 is connected to a clean gas outlet 105, and the lower housing 102 is connected to a dust inlet 104 and a dust hopper 103. A tube sheet 106 is installed inside the upper housing 101, and multiple mounting holes 107 are provided on the tube sheet 106. A circular ring 108 is installed in each mounting hole 107, and the bottom of the circular ring 108 is fixedly connected to... A filter bag frame 109 is provided, and filter bags are provided on the side walls of the filter bag frame 109. These are well-known technologies in this field and will not be described in detail here. A jet blowing module 110 is provided inside the upper housing 101. A ring 108 is rotatably connected to the mounting hole 107. The rotation of the ring 108 is driven by a drive assembly. An annular plate 11 is fixedly connected to the inner wall of the upper housing 101. A perforated plate 106 is slidably connected to the top of the annular plate 11 through a moving mechanism. 06 is connected to the top of the annular plate 11 via a reset mechanism. The movement of the tube sheet 106 is driven by a moving mechanism. The bottom of the tube sheet 106 is connected to a hollow lifting plate 12 via a lifting mechanism. The bottom of the lifting plate 12 has multiple through holes 13, and an annular airbag 14 is fixedly inserted into the through holes 13. The annular airbag 14 is connected to the interior of the lifting plate 12 through a flow channel. During filtration, the filter bag frame 109 and the filter bag can move and rotate back and forth, which can make the filter bag evenly stressed and the surface airflow distribution more balanced, effectively avoiding local dust accumulation, scouring and wear, and bag clogging. At the same time, it can enhance the dust removal effect on the surface of the filter bag, ensuring the filtration efficiency and effect. After back-blowing, the dust blown down below can be pushed down and fall into the ash hopper 103, reducing the dust after back-blowing from re-adhering to the filter bag, ensuring the back-blowing effect, and thus ensuring the efficiency and effect of subsequent filtration.

[0031] The moving mechanism includes a first stop 301 fixedly connected to the top of the tube sheet 106, and a cam 302 connected to the top of the annular plate 11 via a drive mechanism. The cam 302 can slide on the side wall of the first stop 301, and a reset mechanism is provided between the tube sheet 106 and the annular plate 11. The cam 302 is driven to rotate by the drive mechanism. When the tip of the cam 302 abuts against the side wall of the first stop 301, it can push the tube sheet 106 to move away from the bracket 401. When the tip of the cam 302 passes the side wall of the first stop 301, the tube sheet 106 can move and reset under the action of the reset mechanism. By repeating this process, the tube sheet 106 can move back and forth.

[0032] The reset mechanism includes a first fixing block 201 fixedly connected to the top of the annular plate 11, and a first connecting block 203 is connected to the side wall of the first fixing block 201 through a first spring telescopic rod 202. The first connecting block 203 is fixed to the top of the flower plate 106 and plays a guiding and reset role in the movement of the flower plate 106.

[0033] The drive mechanism includes a bracket 401 fixedly connected to the top of the annular plate 11, and a first motor 402 fixedly connected to the top of the bracket 401. The output end of the first motor 402 is fixedly connected to a drive shaft 403, and a cam 302 is fixedly sleeved on the side wall of the drive shaft 403. When the first motor 402 is started, the cam 302 is driven to rotate through the drive shaft 403.

[0034] The drive assembly includes a drive ring 501 fixedly connected to the top of the annular plate 108, and an extrusion plate 502 connected to the top of the annular plate 11 via a reset assembly. The side wall of the extrusion plate 502 is provided with anti-slip texture 503, and the drive ring 501 can roll on the side wall of the extrusion plate 502. When the tube sheet 106 moves back and forth, it can drive the drive ring 501 to move synchronously. When the drive ring 501 slides on the side wall of the extrusion plate 502, it can drive the drive ring 501 to rotate. At the same time, the annular plate 108 drives the filter bag frame 109 and the filter bag to rotate back and forth, which can make the filter bag circumferential force uniform and the surface airflow distribution more balanced, effectively avoiding local dust accumulation, scouring wear and bag clogging. The periodic disturbance generated during the rotation can enhance dust shedding, reduce the frequency of dust removal and energy consumption, and extend the service life of the filter bag. At the same time, it can improve the uniformity and stability of filtration, ensure dust removal efficiency, and has a simple structure that is easy to achieve continuous online operation.

[0035] The reset assembly includes a second fixing block 603 fixedly connected to the top of the annular plate 11, and a second connecting block 601 is connected to the side wall of the second fixing block 603 via a second spring telescopic rod 602. The second connecting block 601 is fixed to the top of the extrusion plate 502. Under the action of the second spring telescopic rod 602, the extrusion plate 502 and the side wall of the drive ring 501 are kept in abutting state. Furthermore, under the action of the anti-slip texture 503, the friction is increased, thereby ensuring the effect of driving its rotation.

[0036] The lifting mechanism includes two sets of symmetrically arranged fixing rods 801 fixedly connected to the bottom of the ceiling plate 106. Each set of fixing rods 801 consists of two rods. The lifting plate 12 is sleeved on the side wall of the fixing rods 801. A second stop block 802 is fixedly connected to the lower end of each fixing rod 801. A third fixing block 803 is fixedly connected to the top of the ceiling plate 106. A second motor 804 is fixedly connected to the side wall of the third fixing block 803. A rotating shaft 805 is fixedly connected to the output end of the second motor 804. The side wall of the rotating shaft 805... A winding roller 806 is fixedly mounted, and a pull rope 807 is wound on the winding roller 806. The lower end of the pull rope 807 is fixed to the top of the lifting plate 12. When the filter bag needs to be back-blown cleaned, the filter bag is back-blown by the blower module 110. After the back-blowing is completed, the second motor 804 is started to reverse. At the same time, the winding roller 806 is driven to reverse through the rotating shaft 805. At this time, the pull rope 807 can be gradually loosened, and the lifting plate 12 can move downward along the fixed rod 801 under the action of gravity.

[0037] The bottom of the lifting plate 12 is equipped with an inflation mechanism for inflating the annular airbag 14. The inflation mechanism includes an air storage cover 901 fixedly connected to the bottom of the lifting plate 12, and the air storage cover 901 is connected to the interior of the lifting plate 12 via a connecting pipe 902. The annular airbag 14 is connected to the interior of the lifting plate 12 via an air passage. A mounting block 904 is fixedly connected to the top of the air storage cover 901. An electromagnet 906 is fixedly connected to the side wall of the mounting block 904. A piston plate 903 is connected to the side wall of the mounting block 904 via a third spring telescopic rod 905. An iron block 907 is fixedly connected to the side wall of the piston plate 903. The bottom of the lifting plate 12 is equipped with multiple cleaning devices for the cloth bag. In use, the cleaning mechanism involves installing the filter bag on the filter bag frame 109, then introducing the flue gas into the lower housing 102 through the dust inlet 104 for filtration. Next, the electromagnet 906 is de-energized, ceasing its attraction to the iron block 907. At this point, the piston plate 903 moves away from the mounting block 904 under the action of the third spring telescopic rod 905. This compresses the hydraulic oil temporarily stored in the air storage hood 901, allowing the hydraulic oil to enter the lifting plate 12 through the connecting pipe 902, and then through the flow channel into the through hole 13. This expansion of the through hole 13 allows it to abut against the opening of the filter bag, providing auxiliary fixing and sealing effects, resulting in greater stability and reliability.

[0038] The cleaning mechanism includes multiple fixed rings 701 fixedly connected to the bottom of the lifting plate 12, and multiple brushes 702 fixedly connected to the inner side wall of the fixed rings 701. When the lifting plate 12 moves downward, the fixed rings 701 can drive the brushes 702 to move downward synchronously, and the brushes 702 can clean the surface of the filter bag.

[0039] A vibration mechanism is provided at the top of the ash hopper 103. The vibration mechanism includes a support plate 1001 fixedly connected to the top of the ash hopper 103, and a lifting block 1003 connected to the bottom of the support plate 1001 via a fourth spring telescopic rod 1002. Multiple striking heads 1005 are connected to the bottom of the lifting block 1003 via a fifth spring telescopic rod 1004. A connecting frame 1006 is fixedly connected to the side wall of the lifting block 1003, and a pushing block 1007 is fixedly connected to the side wall of the connecting frame 1006. Multiple trapezoidal blocks 1008 are fixedly connected to the bottom of the second stop block 802, and the pushing block 1007 can move between the trapezoidal blocks 1008 and the second stop block 802. The side wall of 8 slides. When the flower plate 106 moves back and forth, it can drive the trapezoidal block 1008 to move through the fixed rod 801 and the second stop block 802. When the push block 1007 abuts against the trapezoidal block 1008, it can push the push block 1007 to move downward. At the same time, the lifting block 1003 is driven to move downward through the connecting frame 1006. The fourth spring telescopic rod 1002 is compressed. When the push block 1007 passes the trapezoidal block 1008, the lifting block 1003 can move upward and reset under the action of the fourth spring telescopic rod 1002. By repeating this process, the lifting block 1003 can move up and down back and forth.

[0040] When the lifting block 1003 moves downward, it can drive the striking head 1005 downward through the fifth spring telescopic rod 1004. When the striking head 1005 abuts against the ash hopper 103, the fifth spring telescopic rod 1004 is gradually compressed, thereby reciprocatingly striking and vibrating the ash hopper 103. This creates a vibration effect on the ash hopper 103, which can effectively promote the smooth falling of dust in the ash hopper 103, prevent dust from adhering, accumulating, bridging, and clogging the inner wall of the ash hopper 103, and ensure continuous and stable ash discharge. At the same time, it can reduce the problem of poor ash discharge caused by dust accumulation, reduce the workload of cleaning blockage and the risk of equipment failure, improve the overall operational reliability of the dust collector, and has a simple structure that is easy to automate.

[0041] Working principle: In use, the filter bag is installed on the filter bag frame 109. Then, the flue gas is introduced into the lower box 102 through the dust inlet 104 for filtration. Then, the electromagnet 906 is de-energized, and the iron block 907 is no longer attracted. At this time, the piston plate 903 can move away from the mounting block 904 under the action of the third spring telescopic rod 905. At this time, the hydraulic oil temporarily stored in the air storage hood 901 can be squeezed. The hydraulic oil can enter the lifting plate 12 through the connecting pipe 902, and then enter the through hole 13 through the flow channel. After the through hole 13 expands, it can abut against the opening of the filter bag, which can play an auxiliary fixing and sealing role, making it more stable and reliable.

[0042] During filtration, flue gas enters the lower chamber 102 through the dust inlet 104 and is filtered by the filter bags. Large dust particles settle to the dust hopper 103 due to gravity and inertia, while the dust-laden gas passes through the filter bags. The dust layer formed by the filter bag fibers and the surface traps the dust through various mechanisms. The filtered flue gas enters the upper chamber 101 and is discharged through the clean gas outlet 105, achieving ultra-clean emission of flue gas.

[0043] Meanwhile, during filtration, the first motor 402 is started, driving the cam 302 to rotate via the drive shaft 403. When the tip of the cam 302 abuts against the side wall of the first stop 301, it pushes the tube sheet 106 to move away from the support 401. At the same time, the first spring telescopic rod 202 is compressed. When the tip of the cam 302 passes the side wall of the first stop 301, the tube sheet 106 can move and reset under the action of the first spring telescopic rod 202. This process is repeated, allowing the tube sheet 106 to move back and forth. Simultaneously, the ring 108 drives the filter bag frame 109 and the filter bag to move back and forth, causing the filter bag to continuously generate micro-oscillations and vibrations during operation. This not only enhances the dust removal effect on the filter bag surface but also makes the airflow distribution more uniform, reduces equipment operating resistance, extends the service life of the filter bag, and improves filtration efficiency and effect.

[0044] Meanwhile, when the tube sheet 106 reciprocates, it drives the drive ring 501 to move synchronously. When the drive ring 501 slides on the side wall of the extrusion plate 502, it drives the drive ring 501 to rotate. At the same time, the ring 108 drives the filter bag frame 109 and the filter bag to reciprocate, which makes the filter bag circumferential force uniform and the surface airflow distribution more balanced, effectively avoiding local dust accumulation, erosion wear and bag clogging. The periodic disturbance generated during the rotation can enhance dust shedding, reduce the frequency of dust removal and energy consumption, and extend the service life of the filter bag. At the same time, it can improve the uniformity and stability of filtration, ensure dust removal efficiency, and has a simple structure that is easy to achieve continuous online operation.

[0045] Furthermore, under the action of the second spring telescopic rod 602, the extrusion plate 502 and the side wall of the drive ring 501 are always kept in contact. Moreover, under the action of the anti-slip texture 503, the friction is increased, thereby ensuring the effect of driving its rotation.

[0046] When the flower plate 106 reciprocates, it can drive the trapezoidal block 1008 to move through the fixed rod 801 and the second stop 802. When the push block 1007 abuts against the trapezoidal block 1008, it can push the push block 1007 to move downward. At the same time, it drives the lifting block 1003 to move downward through the connecting frame 1006. The fourth spring telescopic rod 1002 is compressed. When the push block 1007 passes the trapezoidal block 1008, the lifting block 1003 can move upward and reset under the action of the fourth spring telescopic rod 1002. By repeating this process, the lifting block 1003 can move up and down reciprocally.

[0047] When the lifting block 1003 moves downward, it can drive the striking head 1005 downward through the fifth spring telescopic rod 1004. When the striking head 1005 abuts against the ash hopper 103, the fifth spring telescopic rod 1004 is gradually compressed, thereby reciprocatingly striking and vibrating the ash hopper 103. This creates a vibration effect on the ash hopper 103, which can effectively promote the smooth falling of dust in the ash hopper 103, prevent dust from adhering, accumulating, bridging, and clogging the inner wall of the ash hopper 103, and ensure continuous and stable ash discharge. At the same time, it can reduce the problem of poor ash discharge caused by dust accumulation, reduce the workload of cleaning blockage and the risk of equipment failure, improve the overall operational reliability of the dust collector, and has a simple structure that is easy to automate.

[0048] When backflushing the filter bags is required, the filter bags are backflushed through the jet cleaning module 110. After backflushing is completed, the second motor 804 is started to reverse, and at the same time, the winding roller 806 is driven to reverse through the rotating shaft 805. At this time, the pull rope 807 can be gradually loosened, and the lifting plate 12 can move downward along the fixed rod 801 under the action of gravity. At the same time, the brush 702 and the annular airbag 14 slide downward along the side wall of the filter bag. The brush 702 can clean the surface of the filter bag. Furthermore, under the sealing effect of the lifting plate 12 and the annular airbag 14, the dust backflushed below can be pushed downward and fall into the ash hopper 103, which can reduce the dust after backflushing from re-adhering to the filter bag, ensure the effect of backflushing, and thus ensure the efficiency and effect of subsequent filtration.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filtration device for ultra-clean flue gas emission, comprising an upper housing (101) and a lower housing (102) disposed on a bag filter, wherein the upper housing (101) is connected to a clean gas outlet (105), and the lower housing (102) is connected to a dust gas inlet (104) and a dust hopper (103), wherein a tube sheet (106) is disposed inside the upper housing (101), and a plurality of mounting holes (107) are provided on the tube sheet (106), wherein a ring (108) is disposed inside the mounting hole (107), and a filter bag frame (109) is fixedly connected to the bottom of the ring (108), and a filter bag is disposed on the side wall of the filter bag frame (109), and a pulse-jet cleaning module (110) is disposed inside the upper housing (101), characterized in that, The ring (108) is rotatably connected to the mounting hole (107). The rotation of the ring (108) is driven by the drive assembly. The inner wall of the upper box (101) is fixedly connected to the annular plate (11). The flower plate (106) is slidably connected to the top of the annular plate (11) through the moving mechanism. The flower plate (106) is connected to the top of the annular plate (11) through the reset mechanism. The movement of the flower plate (106) is pushed by the moving mechanism. The bottom of the flower plate (106) is connected to the hollow lifting plate (12) through the lifting mechanism. The bottom of the lifting plate (12) is provided with multiple through holes (13). The annular airbag (14) is fixedly inserted in the through holes (13). The annular airbag (14) is connected to the interior of the lifting plate (12) through the flow channel.

2. The filtration device for ultra-clean flue gas emission according to claim 1, characterized in that: The moving mechanism includes a first stop (301) fixedly connected to the top of the flower plate (106), and a cam (302) is connected to the top of the annular plate (11) via a drive mechanism. The cam (302) can slide on the side wall of the first stop (301), and a reset mechanism is provided between the flower plate (106) and the annular plate (11).

3. The filtration device for ultra-clean flue gas emission according to claim 1, characterized in that: The reset mechanism includes a first fixing block (201) fixedly connected to the top of the annular plate (11), and the side wall of the first fixing block (201) is connected to a first connecting block (203) via a first spring telescopic rod (202). The first connecting block (203) is fixed to the top of the flower plate (106).

4. The filtration device for ultra-clean flue gas emission according to claim 3, characterized in that: The driving mechanism includes a bracket (401) fixedly connected to the top of the annular plate (11), and a first motor (402) is fixedly connected to the top of the bracket (401). The output end of the first motor (402) is fixedly connected to a drive shaft (403), and a cam (302) is fixedly sleeved on the side wall of the drive shaft (403).

5. The filtration device for ultra-clean flue gas emission according to claim 1, characterized in that: The drive assembly includes a drive ring (501) fixedly connected to the top of the ring (108), and the top of the ring plate (11) is connected to a pressing plate (502) via a reset assembly. The sidewall of the pressing plate (502) is provided with anti-slip texture (503), and the drive ring (501) can roll on the sidewall of the pressing plate (502).

6. The filtration device for ultra-clean flue gas emission according to claim 5, characterized in that: The reset assembly includes a second fixing block (603) fixedly connected to the top of the annular plate (11), and the side wall of the second fixing block (603) is connected to a second connecting block (601) via a second spring telescopic rod (602). The second connecting block (601) is fixed to the top of the extrusion plate (502).

7. The filtration device for ultra-clean flue gas emission according to claim 1, characterized in that: The lifting mechanism includes two sets of symmetrically arranged fixed rods (801) fixedly connected to the bottom of the flower plate (106). Each set of fixed rods (801) consists of two rods. The lifting plate (12) is sleeved on the side wall of the fixed rod (801). The lower end of the fixed rod (801) is fixedly connected to a second stop block (802). The top of the flower plate (106) is fixedly connected to a third fixed block (803). The side wall of the third fixed block (803) is fixedly connected to a second motor (804). The output end of the second motor (804) is fixedly connected to a rotating shaft (805). The side wall of the rotating shaft (805) is fixedly sleeved with a winding roller (806). A pull rope (807) is wound on the winding roller (806). The lower end of the pull rope (807) is fixed to the top of the lifting plate (12).

8. The filtration device for ultra-clean flue gas emission according to claim 1, characterized in that: The bottom of the lifting plate (12) is provided with an inflation mechanism for inflating the annular airbag (14). The inflation mechanism includes an air storage cover (901) fixedly connected to the bottom of the lifting plate (12), and the air storage cover (901) is connected to the interior of the lifting plate (12) through a connecting pipe (902). The annular airbag (14) is connected to the interior of the lifting plate (12) through an air passage. The top of the air storage cover (901) is fixedly connected with an installation block (904). The side wall of the installation block (904) is fixedly connected with an electromagnet (906). The side wall of the installation block (904) is connected with a piston plate (903) through a third spring telescopic rod (905). The side wall of the piston plate (903) is fixedly connected with an iron block (907). The bottom of the lifting plate (12) is provided with multiple cleaning mechanisms for cleaning the cloth bag.

9. A filtration device for ultra-clean flue gas emission according to claim 8, characterized in that: The cleaning mechanism includes multiple fixed rings (701) fixedly connected to the bottom of the lifting plate (12), and multiple brushes (702) are fixedly connected to the inner sidewall of the fixed rings (701).

10. A filtration device for ultra-clean flue gas emission according to claim 7, characterized in that: The top of the ash hopper (103) is provided with a vibration mechanism, which includes a support plate (1001) fixedly connected to the top of the ash hopper (103), and a lifting block (1003) is connected to the bottom of the support plate (1001) through a fourth spring telescopic rod (1002). The bottom of the lifting block (1003) is connected to multiple striking heads (1005) through a fifth spring telescopic rod (1004). A connecting frame (1006) is fixedly connected to the side wall of the lifting block (1003), and a pushing block (1007) is fixedly connected to the side wall of the connecting frame (1006). Multiple trapezoidal blocks (1008) are fixedly connected to the bottom of the second stop block (802), and the pushing block (1007) can slide on the side wall of the trapezoidal block (1008).

Images