Cloth bag dust removal device

Abstract

The invention relates to the technical field of dust removal equipment, and provides a bag-type dust removal device aiming at the condition that the filter bag cleaning effect of a traditional bag-type dust remover is limited, and the bag-type dust removal device comprises a bag-type dust remover body and an auxiliary flow guide mechanism; the bag-type dust collector body comprises a bag chamber, and a filtering mechanism and a pulse blowing system are arranged in the bag chamber in a supporting manner; the filtering mechanism comprises a supporting plate supported on the top of the cloth bag bin, and a plurality of filtering bags are vertically and downwards supported on the supporting plate; the pulse blowing system is used for blowing compressed air to the filter bag; the auxiliary flow guide mechanism comprises a flow guide plate and a lifting driving part; the guide plate is supported in the cloth bag chamber; the guide plate is provided with a plurality of through holes corresponding to the plurality of filter bags, and the filter bags are arranged in the corresponding through holes in a penetrating manner; and the lifting driving piece is in driving connection with the flow guide plate and is used for driving the flow guide plate to lift. The device has the effect of improving the cleaning degree of the filter bag of the bag-type dust collector.

Description

Technical Field

[0001] The present application relates to the field of dust removal equipment, and in particular to a bag dust removal device. Background Art

[0002] In the process of pyrolysis and combustion of biomass fuel to produce biomass gas, the biomass gasifier will produce dusty flue gas, which contains a lot of dust. Therefore, the dusty flue gas needs to be dedusted before it can be discharged normally. At present, the dusty flue gas of the biomass gasifier is mainly dedusted by bag dust collector.

[0003] In related technologies, such as Figure 1 The bag dust collector 1 includes a bag chamber 11, an ash hopper 12, an air inlet box 13 and an air outlet box 14, the ash hopper 12 is connected to the bottom of the bag chamber 11, the air inlet box 13 is connected to the ash hopper 12, and the air outlet box 14 is connected to the top of the bag chamber 11; a filtering mechanism 15 and a pulse spraying system 16 are also provided on the top of the bag chamber 11; the filtering mechanism 15 includes a vertically supported filter bag 151, and the filter bag 151 is connected to the air inlet box 13; the pulse spraying system 16 is used to spray compressed air to the filter bag 151 to clean the dust filtered on the outside of the filter bag 151.

[0004] When the dust-containing flue gas generated by the biomass gasification furnace is treated by a bag dust collector, the dust-containing flue gas is introduced into the ash hopper through the induced draft equipment via the air inlet box. The large particles of dust in the dust-containing flue gas fall into the ash hopper by their own gravity, and the fine dust continues to flow to the bag chamber with the flue gas. The filter bags in the bag chamber are used to filter the fine dust on the outer peripheral side of the filter bags. The cleaned flue gas passes through the filter bags and flows to the air outlet box, and is finally discharged through the air outlet box.

[0005] When cleaning the filter bags through the pulse jet system, the pulse jet system sprays compressed air into each filter bag. The compressed air sprayed into the filter bag will blow out the dust adhering to the outside of the filter bag from the outside of the filter bag to restore the filtering capacity of the filter bag.

[0006] With regard to the above-mentioned related technologies, when the filter bags are cleaned by the pulse jet system of the bag dust collector, the dust blown away from the filter bags will first diffuse in the bag chamber, most of which will fall into the hopper, but a considerable amount of dust will continue to diffuse and flow in the bag chamber, and eventually re-adhere to the outside of the filter bags and the inner wall of the bag chamber. The cleaning effect on the filter bags is relatively limited. Therefore, there is room for improvement. Summary of the invention

[0007] In order to improve the cleaning effect of the filter bags of the bag dust collector, the present application provides a bag dust removal device.

[0008] The present application provides a bag dust removal device, which adopts the following technical solution: A bag dust removal device comprises a bag dust collector body and an auxiliary flow guiding mechanism; The bag dust collector body includes a bag chamber, in which a filter mechanism and a pulse spray system are supported; the filter mechanism includes a support plate supported on the top of the bag chamber, and a plurality of filter bags are supported vertically downward on the support plate; the pulse spray system is located above the filter mechanism and is used to spray compressed air to the filter bags of the filter mechanism; The auxiliary guide mechanism includes a guide plate and a lifting drive member; the guide plate is supported in the bag chamber and the guide plate is located below the support plate; the guide plate is provided with a plurality of through holes corresponding to the plurality of filter bags of the filtering mechanism, and the filter bags are passed through the corresponding through holes; the lifting drive member is installed on the top of the bag chamber and the lifting drive member is drivingly connected to the guide plate, and the lifting drive member is used to drive the guide plate to rise and fall vertically.

[0009] By adopting the above technical solution, when the pulse spraying system sprays compressed air to the filter bag to blow the dust adhering to the outer surface of the filter bag away from the outside of the filter bag, the guide plate is driven downward by the lifting drive member. During the downward movement of the guide plate, the dust is guided to flow to the ash hopper at the bottom of the bag chamber, thereby limiting the diffusion of dust in the bag chamber, reducing the re-adhesion of dust to the filter bag or the inner wall of the chamber, reducing the risk of secondary contamination of the cleaned filter bag by dust, and effectively improving the cleaning effect of the filter bag.

[0010] Preferably, a cylindrical support frame is supported inside the filter bag; a flexible annular protrusion is convexly provided on the outer periphery of the top end of the filter bag, and the flexible annular protrusion is mounted on the upper surface of the support plate; an annular clamping plate is coaxially connected to the outer periphery of the top end of the cylindrical support frame, the annular clamping plate abuts against the upper surface of the flexible annular protrusion, and the annular clamping plate is connected to the support plate via a connecting piece.

[0011] By adopting the above technical solution, on the one hand, the annular clamping plate at the top of the cylindrical support frame is used to press the flexible annular protrusion on the top of the filter bag against the support plate, so that the filter cartridge can be firmly supported on the support plate, thereby limiting the possibility of the filter bag being detached and displaced during the subsequent use of the bag dust collector. On the other hand, the cylindrical support frame can support and limit the filter bag to keep the filter bag in a good shape, thereby reducing the possibility of the filter bag bending due to airflow impact during subsequent use, thereby affecting the flow of smoke inside the filter bag.

[0012] Preferably, the guide plate is connected with a support ring corresponding to the perforation, the support ring is connected to the corresponding perforation, a flexible annular sealing member is coaxially supported on the inner periphery of the support ring, and the inner periphery of the flexible annular sealing member is abutted against the outer periphery of the filter bag.

[0013] By adopting the above technical scheme, on the one hand, the gap between the perforation and the corresponding periphery of the filter bag is sealed by the flexible annular sealing member, thereby limiting the situation in which dust flows to the top of the bag chamber through the gap between the perforation and the filter bag during the subsequent downward movement of the guide plate, which is beneficial for better guiding the dust to the hopper through the downwardly moved guide plate; on the other hand, during the downward movement of the guide plate, the flexible annular sealing member can be used to scrub and scrape off the dust blocks that are compacted on the periphery of the filter bag and are not easily blown away from the periphery of the filter bag by the pulse jet system.

[0014] Preferably, the flexible annular sealing member comprises an annular airbag coaxially supported on the inner periphery of the support ring, the annular airbag being connected to an air source; a flexible cleaning belt is connected around the inner periphery of the annular airbag, the flexible cleaning belt being arranged in contact with the outer periphery of the filter bag.

[0015] By adopting the above technical solution, the filter bag itself is easy to form wrinkles. By setting the annular airbag and the flexible cleaning belt, the annular airbag and the flexible cleaning belt cooperate with each other, so that the flexible annular plugging piece can better adapt to the irregular shape of the filter bag, ensuring the sealing performance, and facilitating the flexible annular plugging piece to better scrub the dust around the filter bag. At the same time, before the guide plate is subsequently driven to move up and reset by the lifting drive, the gas in the annular airbag can be released first to reduce the friction between the flexible annular plugging piece and the filter bag, which is conducive to the guide plate to move up and reset more smoothly.

[0016] Preferably, an annular flange is coaxially convexly provided on the upper surface of the flexible annular protrusion, an annular groove is formed at the bottom of the annular clamping plate corresponding to the annular flange, and the annular flange is embedded in the annular groove.

[0017] By adopting the above technical solution, the annular flange and the annular groove cooperate with each other, which is beneficial to further improve the connection integrity between the filter bag and the cylindrical support frame and reduce the situation where the filter bag is separated from the cylindrical support frame when subjected to external force.

[0018] Preferably, a flexible brushing member is connected around the outer periphery of the guide plate, and the flexible brushing member is arranged in contact with the inner wall of the bag chamber.

[0019] By adopting the above technical scheme and setting the flexible brushing parts on the periphery of the guide plate, on the one hand, during the subsequent downward movement of the guide plate, the dust adhering to the inner wall of the bag chamber can be brushed off to the ash hopper by the flexible brushing parts, so as to clean the inner wall of the bag chamber. At the same time, the flexible brushing parts can be used to assist in sealing the gap between the guide plate and the inner wall of the bag chamber, so as to limit the dust in the bag chamber from flowing upward through the gap between the inner wall of the bag chamber and the guide plate, which is beneficial for the dust blown away from the filter bag to fall better into the ash hopper at the bottom of the bag chamber.

[0020] Preferably, an annular limiting groove is provided on the inner circumference of the annular airbag corresponding to the annular airbag, and the outer circumference of the annular airbag is embedded in the annular limiting groove.

[0021] By adopting the above technical solution, the outer peripheral edge of the annular airbag is embedded in the annular limiting groove, and the annular airbag is limited by the annular limiting groove to prevent the annular airbag from detaching from the inner periphery of the support ring when the subsequent guide plate drives the annular airbag and the filter bag to move relative to each other.

[0022] Preferably, a vibrator is installed at the bottom of the cylindrical supporting frame.

[0023] By adopting the above technical solution and setting a vibrator, before the pulse spraying system of the bag filter carries out the spraying treatment on the filter bag, the vibrator on the cylindrical support frame can be used to drive the cylindrical support frame to vibrate the filter bag, so as to remove part of the dust adhering to the periphery of the filter bag, thereby achieving auxiliary cleaning of the dust on the periphery of the filter bag.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the setting of the auxiliary guide mechanism, after the pulse jet system of the bag dust collector has sprayed the filter bag, the guide plate is driven downward by the lifting drive member, and the downward moving guide plate is used to change the air flow path in the bag chamber to guide the dust blown away from the filter bag by the pulse jet system to fall quickly into the ash hopper, reduce the diffusion of dust in the bag chamber, limit the re-contamination of the cleaned filter bag by dust, and help improve the cleaning effect of the filter bag.

[0025] 2. Use the flexible annular sealing piece on the inner circumference of the support ring to seal the gap between the perforation of the guide plate and the outer circumference of the corresponding filter bag to limit the dust from flowing upward from the gap between the perforation and the filter bag when the guide plate is subsequently moved down; at the same time, in the process of moving the guide plate down, the dust on the outer circumference of the filter bag can be brushed off by the flexible annular sealing piece to achieve further cleaning of the filter bag.

[0026] 3. By arranging a flexible brushing piece on the periphery of the guide plate, the gap between the guide plate and the inner wall of the bag chamber can be blocked by the flexible brushing piece later to limit the upward flow of dust through the gap between the guide plate and the inner wall of the bag chamber; at the same time, the flexible brushing piece can be used to brush off the dust on the inner wall of the bag chamber during the downward movement of the guide plate, thereby cleaning the inner wall of the bag chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This application is used to illustrate the internal structure of the existing bag filter.

[0028] Figure 2 It is a schematic diagram of the internal structure of a bag filter used in an embodiment of the present application.

[0029] Figure 3 It is a partial schematic diagram used to illustrate the internal structure of a bag filter in an embodiment of the present application.

[0030] Figure 4 yes Figure 3 Enlarged schematic diagram of part A in the middle.

[0031] Figure 5 It is a schematic diagram used to illustrate the connection between the filter bag and the cylindrical support frame in an embodiment of the present application.

[0032] Figure 6 It is a schematic diagram used to illustrate the connection between the cylindrical support frame and the vibrator in an embodiment of the present application.

[0033] Figure 7 It is a structural schematic diagram used to illustrate the auxiliary guide mechanism in an embodiment of the present application.

[0034] Figure 8 yes Figure 3 Enlarged schematic diagram of part B in the middle.

[0035] Description of reference numerals: 1. Bag filter; 11. Bag chamber; 12. Ash hopper; 13. Air inlet box; 14. Air outlet box; 15. Filter mechanism; 150. Support plate; 151. Filter bag; 1511. Flexible annular protrusion; 1512. Annular flange; 152. Cylindrical support frame; 153. Annular clamping plate; 1531. Annular groove; 154. Ear plate; 155. Vibrator; 16. Pulse spray system; 161. Spray pipe; 162. Spray head; 2. Auxiliary guide mechanism; 21. Guide plate; 211. Perforation; 22. Lifting drive member; 23. Support ring; 231. Annular limit groove; 24. Flexible annular sealing member; 241. Annular airbag; 242. Flexible cleaning belt; 25. Flexible brush member. DETAILED DESCRIPTION

[0036] The following is combined with Figure 2-8 This application is described in further detail.

[0037] The present application discloses a bag dust removal device, referring to Figure 2 , including a bag dust collector 1 body and an auxiliary flow guiding mechanism 2.

[0038] Reference Figure 2 and Figure 3 The bag dust collector 1 body includes a bag chamber 11, an ash hopper 12, an air inlet box 13 and an air outlet box 14; the ash hopper 12 is connected to the bottom of the bag chamber 11; the air inlet box 13 is connected to the ash hopper 12; the air outlet box 14 is connected to the top of the bag chamber 11; a filtering mechanism 15 and a pulse spray system 16 are also arranged above the inner cavity of the bag chamber 11.

[0039] Reference Figure 3 and Figure 4 The filtering mechanism 15 includes a supporting plate 150 , the outer periphery of the supporting plate 150 is fixed to the inner cavity wall of the bag chamber 11 , and a plurality of filter bags 151 are vertically supported on the supporting plate 150 , and the top bag opening of the filter bag 151 is connected to the air outlet box 14 .

[0040] Reference Figure 4 and Figure 5 A cylindrical support frame 152 is supported in each filter bag 151; the outer periphery of the cylindrical support frame 152 is arranged to abut against the outer periphery of the filter bag 151. The cylindrical support frame 152 is used to shape and limit the filter bag 151, so that the cylindrical support frame 152 remains in a relatively stretched state, and the filter bag 151 is prevented from bending due to the airflow inside the bag chamber 11, thereby affecting the filter bag 151 from filtering smoke.

[0041] A flexible annular protrusion 1511 is convexly provided on the outer periphery of the top of the filter bag 151, and the flexible annular protrusion 1511 overlaps the upper surface of the support plate 150. An annular clamping plate 153 is coaxially connected to the outer periphery of the top of the cylindrical support frame 152, and the annular clamping plate 153 overlaps the upper surface of the flexible annular protrusion 1511, and the annular clamping plate 153 is connected to the support plate 150 through a connecting piece, so as to firmly support and fix the filter bag 151 on the support plate 150, and prevent the subsequent filter bag 151 from falling from the support plate 150. Specifically, the connecting piece includes a plurality of ear plates 154 convexly provided on the outer periphery of the annular clamping plate 153, and the ear plates 154 are fixed to the support plate 150 through anti-loosening bolts.

[0042] An annular flange 1512 is coaxially convexly provided on the upper surface of the flexible annular protrusion 1511, and an annular groove 1531 is provided on the lower surface of the annular clamping plate 153 corresponding to the annular flange 1512. The annular flange 1512 is embedded in the annular groove 1531. The cooperation between the annular flange 1512 and the annular groove 1531 is beneficial to further improve the connection integrity between the filter bag 151 and the cylindrical support frame 152.

[0043] Reference Figure 3 and Figure 4The pulse spray system 16 is located above the filter mechanism 15, and is used to spray compressed air into the filter bag 151, so that the dust adhering to the outer periphery of the filter bag 151 is separated from the outer periphery of the filter bag 151. Specifically, the pulse spray system 16 includes a spray pipe 161 and an air bag. The spray pipe 161 is arranged above a number of filter bags 151, and the spray pipe 161 is connected to the air bag, and a pulse control valve is installed on the spray pipe 161. The spray pipe 161 is connected to a spray head 162 corresponding to the filter bag 151, and the spray head 162 is arranged opposite to the corresponding filter bag 151. When the filter bag 151 is cleaned by the pulse spray system 16, the pulse control valve is opened so that the compressed air in the air bag is sprayed into the corresponding filter bag 151 through the spray head 162 on the spray pipe 161.

[0044] Reference Figure 6 A vibrator 155 is also installed at the bottom of the cylindrical support frame 152. In this embodiment, the vibrator 155 is a pneumatic piston vibrator 155. Through the arrangement of the vibrator 155, before the filter bag 151 is cleaned by the pulse jet system 16, the cylindrical support frame 152 can be driven by the vibrator 155 to drive the filter bag 151 to vibrate, so as to shake off part of the dust on the periphery of the filter bag 151, which is conducive to the auxiliary cleaning of the dust adhering to the periphery of the filter bag 151.

[0045] Reference Figure 3 , Figure 4 as well as Figure 7 , the auxiliary guide mechanism 2 includes a guide plate 21 and a lifting drive member 22. The guide plate 21 is located in the inner cavity of the bag chamber 11 of the bag filter 1 body, and the guide plate 21 is located below the support plate 150. The guide plate 21 is provided with a plurality of through holes 211 corresponding to the plurality of filter bags 151 on the support plate 150, and the filter bags 151 are all penetrated through the corresponding through holes 211. The lifting drive member 22 is drivingly connected to the guide plate 21, and is used to drive the guide plate 21 to rise and fall vertically. Specifically, the lifting drive member 22 includes a plurality of lifting cylinders vertically installed on the top of the bag chamber 11; the plurality of lifting cylinders corresponding to the support plate 150 are provided with a plurality of through holes, and the piston rods of the lifting cylinders are penetrated through the corresponding through holes on the support plate 150 and connected to the guide plate 21. The gap between the through hole and the piston rod of the lifting cylinder is sealed by a sealing ring.

[0046] Subsequently, compressed air is sprayed on the filter bag 151 through the pulse spray system 16 in the bag dust collector 1 body to blow the dust away from the outside of the filter bag 151, and then the guide plate 21 is driven downward by the lifting drive 22. The downwardly moved guide plate 21 is used to guide the dust diffused in the bag chamber 11 to move downward until the dust settles in the ash hopper 12, which is conducive to accelerating the dust to fall into the ash hopper 12 and limiting the dust from adhering to the outside of the filter bag 151 again.

[0047] Reference Figure 4 and Figure 7, a gap is left between the inner periphery of the perforation 211 and the outer periphery of the filter bag 151 to reduce the wear of the inner periphery of the perforation 211 on the filter bag 151 during the subsequent up and down movement of the guide plate 21. A support ring 23 is fixedly connected to the corresponding perforation 211 on the upper surface of the support plate 150, and the support ring 23 is connected to the corresponding perforation 211. A flexible annular plugging member 24 is supported on the inner periphery of the support ring 23, and the flexible annular plugging member 24 includes an annular airbag 241 coaxially supported on the inner periphery of the support ring 23, and the annular airbag 241 is connected to an external air source. A flexible cleaning belt 242 is fixed around the inner periphery of the annular airbag 241, and the flexible cleaning belt 242 is abutted against the outer periphery of the corresponding filter bag 151 to achieve the blocking of the gap between the perforation 211 and the filter bag 151. In this embodiment, the flexible cleaning belt 242 is made of nylon fiber material.

[0048] By setting the flexible annular sealing member 24, on the one hand, the gap between the inner periphery of the perforation 211 and the outer periphery of the filter bag 151 can be blocked by the flexible annular sealing member 24, thereby limiting the dust from spreading upward to the upper part of the bag chamber 11 through the gap during the subsequent downward movement of the guide plate 21; on the other hand, during the downward movement of the guide plate 21, the dust that has been compacted and fixed on the outer periphery of the filter bag 151 and cannot be blown away can be brushed downward to the ash hopper 12 by the flexible cleaning belt 242 of the flexible annular sealing member 24, thereby further cleaning the filter bag 151 and improving the cleaning effect of the filter bag 151.

[0049] The provision of the annular airbag 241 is conducive to enabling the flexible cleaning belt 242 to better fit and seal on the periphery of the filter bag 151 to seal the gap between the perforation 211 and the filter bag 151; at the same time, when the lifting drive 22 subsequently drives the guide plate 21 to move upward, the gas in the annular airbag 241 can be released to reduce the friction between the flexible cleaning belt 242 and the filter bag 151, which is conducive to a smoother upward resetting process of the guide plate 21.

[0050] Reference Figure 4 and Figure 7 The inner circumference of the support ring 23 is coaxially provided with an annular limiting groove 231 corresponding to the annular airbag 241, and the outer circumference of the annular airbag 241 is embedded in the annular limiting groove 231. The annular limiting groove 231 is used to limit the position of the annular airbag 241, so as to prevent the annular airbag 241 from detaching from the support ring 23 when the guide plate 21 drives the annular airbag 241 and the filter bag 151 to move relative to each other.

[0051] Reference Figure 3 and Figure 8A flexible brushing member 25 is connected to the outer peripheral side of the guide plate 21. Specifically, the flexible brushing member 25 includes a brush, which is fixed to the guide plate 21 by bolts and nuts, and the bristles of the brush are arranged in contact with the inner wall of the bag chamber 11. Through the arrangement of the flexible brushing member 25, on the one hand, the gap between the outer side of the guide plate 21 and the inner wall of the bag chamber 11 is effectively blocked by the flexible brushing member 25, so as to limit the dust diffused in the bag chamber 11 from flowing upward through the gap between the guide plate 21 and the inner wall of the bag chamber 11 during the subsequent downward movement of the guide plate 21. On the other hand, when the guide plate 21 moves downward, the dust adhering to the inner wall of the bag chamber 11 can be brushed downward into the ash hopper 12 by the flexible brushing member 25 on its outer side, so as to clean the bag silo.

[0052] The implementation principle of the embodiment of the present application is as follows: after the bag dust collector 1 body is subjected to a spraying treatment on the filter bag 151 through the pulse spraying system 16, air is inflated into the annular airbag 241 through the air source, so that the annular airbag 241 expands and drives the flexible cleaning belt 242 to abut against the outer periphery of the filter bag 151, and then the guide plate 21 is driven downward by the lifting drive member 22, and the dust diffused in the bag bin at this time is guided downward by the downwardly moving guide plate 21 to the dust at the bottom of the bag bin. In the bucket 12, the dust is restricted from flowing upward and re-adhering to the inner wall of the filter bag 151 and the bag bin, reducing the secondary contamination of the cleaned filter bag 151 by dust; at the same time, during the downward movement of the guide plate 21, the flexible annular sealing member 24 on the support ring 23 of the guide plate 21 and the flexible brushing member 25 on the outer side of the guide plate 21 respectively brush the filter bag 151 and the inner wall of the bag chamber 11, thereby further cleaning the dust on the filter bag 151 and the inner wall of the bag chamber 11. The cleaning effect of the filter bag 151 inside the bag dust collector 1 is effectively improved.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bag dust removal device, characterized in that: It comprises a bag dust collector (1) body and an auxiliary flow guiding mechanism (2); The bag dust collector (1) body comprises a bag chamber (11), wherein a filter mechanism (15) and a pulse spray system (16) are supported in the bag chamber (11); the filter mechanism (15) comprises a support plate (150) supported on the top of the bag chamber (11), wherein a plurality of filter bags (151) are supported vertically downward on the support plate (150); the pulse spray system (16) is located above the filter mechanism (15) and is used for spraying compressed air onto the filter bags (151) of the filter mechanism (15); The auxiliary flow guide mechanism (2) comprises a flow guide plate (21) and a lifting drive member (22); the flow guide plate (21) is supported in the bag chamber (11) and is located below the support plate (150); the flow guide plate (21) is provided with a plurality of through holes (211) corresponding to the plurality of filter bags (151) of the filtering mechanism (15), and the filter bags (151) are passed through the corresponding through holes (211); the lifting drive member (22) is installed on the top of the bag chamber (11) and is drivingly connected to the flow guide plate (21), and the lifting drive member (22) is used to drive the flow guide plate (21) to rise and fall vertically.

2. A bag dust removal device according to claim 1, characterized in that: A cylindrical support frame (152) is supported inside the filter bag (151); a flexible annular protrusion (1511) is protruding from the outer periphery of the top end of the filter bag (151), and the flexible annular protrusion (1511) is mounted on the upper surface of the support plate (150); an annular clamping plate (153) is coaxially connected to the outer periphery of the top end of the cylindrical support frame (152), and the annular clamping plate (153) abuts against the upper surface of the flexible annular protrusion (1511), and the annular clamping plate (153) is connected to the support plate (150) via a connecting piece.

3. A bag dust removal device according to claim 2, characterized in that: The guide plate (21) is connected to a support ring (23) corresponding to the through hole (211); the support ring (23) is connected to the corresponding through hole (211); a flexible annular sealing member (24) is coaxially supported on the inner periphery of the support ring (23); the inner periphery of the flexible annular sealing member (24) is abutted against the outer periphery of the filter bag (151).

4. A bag dust removal device according to claim 3, characterized in that: The flexible annular sealing member (24) comprises an annular airbag (241) coaxially supported on the inner periphery of the support ring (23), and the annular airbag (241) is connected to an air source; a flexible cleaning belt (242) is connected around the inner periphery of the annular airbag (241), and the flexible cleaning belt (242) is arranged in contact with the outer periphery of the filter bag (151).

5. The bag dust removal device according to claim 3, characterized in that: An annular flange (1512) is coaxially convexly provided on the upper surface of the flexible annular protrusion (1511), and an annular groove (1531) is formed at the bottom of the annular clamping plate (153) corresponding to the annular flange (1512), and the annular flange (1512) is embedded in the annular groove (1531).

6. A bag dust removal device according to claim 3, characterized in that: A flexible brushing member (25) is connected around the outer periphery of the guide plate (21), and the flexible brushing member (25) is disposed in contact with the inner wall of the bag chamber (11).

7. A bag dust removal device according to claim 4, characterized in that: An annular limiting groove (231) is provided on the inner periphery of the annular airbag (241) corresponding to the annular airbag (241), and the outer periphery of the annular airbag (241) is embedded in the annular limiting groove (231).

8. The bag dust removal device according to claim 2, characterized in that: A vibrator (155) is installed at the bottom of the cylindrical support frame (152).

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