Downstream structure bag-type dust collector

Abstract

The invention relates to the technical field of dry dust removal, and discloses a downstream structure bag-type dust remover which comprises a dust removal box, an air inlet and an air outlet are formed in the dust removal box, a dust collection channel is formed in the bottom of the dust removal box, a dust discharge port is formed in the bottom of the dust collection channel, and a bag-type dust removal mechanism is arranged in the dust removal box. The cloth bag dust removal mechanism comprises multiple groups of filters, a pulse dust removal mechanism and a driving mechanism, the filters are transversely arranged, input airflow on an air inlet is conveyed downwards, the pulse dust removal mechanism vibrates a cloth bag downwards through compressed air pulses, and the driving mechanism enables the multiple groups of filters to rotate and drives the cloth bag on the filters to be supported; according to the device, a transverse side insertion type filter structure is adopted, so that dust-containing flue gas enters downwards from the upper part and then is filtered by the cloth bag, the dust falling direction is basically consistent with the dust-containing airflow discharging direction, the dust settling efficiency is greatly improved, and the dust cleaning efficiency is improved through the pulse dust cleaning mechanism and the cloth bag capable of being opened.

Description

Technical Field

[0001] The invention relates to the technical field of dry dust removal, and in particular to a downstream structured bag dust collector. Background Art

[0002] As a key equipment for dust control, bag dust collector plays an important role in industrial dust control. Its dust removal process mainly includes three steps: the smoke is blocked on the surface of the bag through bag filtration, the compressed air pulse reverse cleaning shakes the dust off, and the dust falls into the ash hopper and is discharged and collected.

[0003] At present, the widely used bag dust collector in the market is the pulse cleaning bag dust collector (or pulse filter cartridge dust collector). The structure of this dust collector is that the flue gas enters from the bottom, rises to the clean air chamber through the suspended bag and is discharged to the standard. When the dust adhesion reaches a certain resistance, the compressed air pulse vibrates the bag downward, and the dust on the surface of the bag falls and slowly falls to the ash bin to be discharged. The characteristics of this structure are: the dust-containing flue gas entry direction (from bottom to top) is opposite to the falling direction of the shaken dust (from top to bottom). There is a big problem with this structure, that is, when the dust on the surface of the bag falls, it encounters the upward flue gas resistance, resulting in a long falling time and some dust will be attached to the bag for the second time, thus reducing the dust removal efficiency. Over time, it will cause the filtering function to deteriorate and the resistance to increase until forced cleaning is required, resulting in poor dust collection effect and high energy consumption. In addition, because the bag has many folds, dust will remain on the shady side of the bag, which is difficult to clean. Excessive dust accumulation will affect the ventilation capacity of the shady side, thereby reducing the ventilation efficiency of the bag. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the above difficulties and provide a downstream structure bag dust collector.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is: a downstream structure bag dust collector, comprising a dust removal box, an air inlet and an air outlet are arranged on the dust removal box, a dust collection channel is arranged at the bottom of the dust collection channel, a discharge valve is arranged at the bottom of the dust collection channel, a dust discharge port is arranged below the discharge valve, and a bag dust removal mechanism is arranged in the dust removal box; The air inlet is arranged at the top of the dust removal box. The bag dust removal mechanism includes multiple groups of filters. The filters are arranged horizontally. The filters include horizontal tubes and cloth bags. The cloth bags are covered on the outside of the horizontal tubes. One end of the filter is provided with an air collecting box connected to the air outlet. One end of multiple horizontal tubes is connected to the air collecting box. The bag dust removal mechanism also includes a pulse cleaning mechanism and a driving mechanism. The pulse cleaning mechanism vibrates the cloth bags downward through compressed air pulses. The driving mechanism rotates the multiple groups of filters and drives the cloth bags to be propped up.

[0006] As an improvement: the filter also includes a transmission sleeve, a turntable, multiple support rods and a buckle. The transmission sleeve is rotatably and slidably arranged at one end of the horizontal tube, the turntable is rotatably arranged at the other end of the horizontal tube, and the end of the turntable is rotatably arranged in the through hole of the air collecting box. A push platform is provided at one end of the transmission sleeve near the turntable, and the two ends of the support rod are respectively hinged to the push platform and the turntable. The driving mechanism drives the transmission sleeve to move and rotate laterally, and the cloth bag is arranged on the outside of the support rod. The two ends of the cloth bag are respectively arranged in the grooves on the outside of the push platform and the turntable. The ends of the cloth bag are locked by the buckle, and the cloth bag is opened during the cleaning stage through the filter, thereby improving the cleaning efficiency.

[0007] As an improvement: the driving mechanism includes a fixed frame and a movable frame, the fixed frame includes an outer plate and an inner plate, a plurality of connecting beams are arranged between the outer plate and the inner plate, the movable frame is arranged between the outer plate and the inner plate, a plurality of cylinders are arranged on the outer plate, the output end of the cylinder is connected to the movable frame, a slider is arranged on the inner side of the through hole of the movable frame, the slider slides in cooperation with the groove on the connecting beam, a swivel is arranged at one end of the transmission sleeve through the through hole on the inner plate, the movable frame is provided with a rotating groove rotatably cooperated with the rotating ring, and the lateral movement of the plurality of transmission sleeves is realized through the driving mechanism.

[0008] As an improvement: the movable frame is provided with a rotation drive mechanism, which includes cylinder 2 and a transverse frame. Cylinder 2 is arranged on the movable frame, and the transverse frame is provided with multiple rows of sliding rods. The movable frame is provided with sliding sleeves that slide with the sliding rods. A rack is provided at the bottom of the sliding rod, and a gear meshing with the rack is provided on the transmission sleeve. The rotation action of multiple transmission sleeves is realized through the rotation drive mechanism.

[0009] As an improvement: one end of the transverse tube passes through the turntable and is connected to the through hole on the air collecting box, and the other end is provided with a fixing rod, which passes through the inner through hole of the transmission sleeve and is connected to the outer plate, and a plurality of ventilation holes are provided on the transverse tube.

[0010] As an improvement: the pulse cleaning mechanism includes an air storage and distribution tank, the input port of the air storage and distribution tank is connected to an external compressed air pipeline, and multiple output ports are connected to air distribution pipes, each air distribution pipe is provided with a solenoid valve, a fixed pipe sleeve is provided on the inner side of the transverse pipe, and a jet pipe connected to the air distribution pipe is provided in the fixed pipe sleeve, and multiple jet ports are evenly arranged at the bottom of the jet pipe, and the jet ports are aligned with the through holes at the bottom of the transverse pipe. The cleaning work of the cloth bag is achieved through the pulse blowing of the pulse cleaning mechanism.

[0011] As an improvement: a support frame is provided on the inner side of the air inlet, and a diffuser fan is provided at the bottom of the support frame. The diffuser fan includes a hollow turntable. The top of the hollow turntable rotates with the support frame, and a plurality of fan blades are provided on the outer side of the hollow turntable. The outer contours of the hollow turntable and the fan blades are conical, so as to realize the function of dispersing the input gas and driving the input of the wake flow.

[0012] Compared with the prior art, the invention has the following beneficial effects: the device adopts a lateral side-inserted filter structure, so that the dust-containing flue gas enters from the top and then passes through the bag filter, so that the dust falling direction is basically consistent with the dust-containing airflow discharge direction, which greatly improves the dust settling efficiency. The pulse cleaning mechanism and the expandable bag can improve the cleaning efficiency. Specifically: 1. Change the filter from hanging type to horizontal side plug-in type, so that the dusty smoke is discharged from the top, and the dust falling direction is basically consistent with the dusty airflow discharge direction, thus avoiding the secondary attachment of dust. The dusty airflow will blow off part of the dust on the surface of the bag, accelerating the dust falling process; 2. Improve the filter structure, change the fixed bag structure to a rotatable and expandable structure, so that the dust on the dark side is exposed. The compressed air blows downward through the bag rotation to shake off the dust attached to the bag. The compressed air blowing direction is consistent with the dust falling direction, which further improves the dust falling efficiency. 3. Add a driving mechanism to realize the lateral movement and rotation of the transmission sleeve through the driving mechanism, realize the deformation of the support rod, so as to open the bag and improve the cleaning quality and efficiency. The rotation of the bag is conducive to the downward spray of air to shake off all the dust on the outer side of the bag; 4. Add a freely rotating diffuser fan at the air inlet. The diffuser fan can change the input direction of the dust-laden airflow, so that the dust-laden airflow is generally transported downward and dispersed to avoid excessive dust accumulation in the middle section of the bag, which affects the filtration efficiency. After the dust-laden airflow is transported, the inertial rotation of the diffuser fan will discharge the tail flow in the input pipe into the air collecting box for filtration, reducing dust accumulation in the input pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a downstream structure bag dust collector of the present invention; Figure 2 It is a cross-sectional view of a downstream structure bag dust collector of the present invention; Figure 3 It is a structural schematic diagram of a bag dust removal mechanism of a downstream structure bag dust collector of the present invention; Figure 4 It is an exploded view of a bag dust removal mechanism of a downstream structure bag dust collector of the present invention; Figure 5 It is an exploded view of a filter of a downstream structure bag filter of the present invention; Figure 6 It is a schematic diagram of the structure of a downstream structure bag filter for removing the bag of the present invention; Figure 7 It is a cross-sectional view of a filter of a downstream structure bag filter of the present invention; Figure 8It is a structural schematic diagram of a driving mechanism of a downstream structure bag dust collector of the present invention; Fig. 9 It is an exploded view of a driving mechanism of a downstream structure bag filter of the present invention; Fig.10 It is a cross-sectional view of a driving mechanism of a downstream structure bag filter of the present invention; Fig.11 It is a structural schematic diagram of a horizontal pipe and an air collecting box of a downstream structure bag dust collector of the present invention; Fig.12 It is a structural schematic diagram of a pulse dust cleaning mechanism of a downstream structure bag dust collector of the present invention; Fig.13 The present invention is a schematic structural diagram of an air diffusion fan of a downstream structure bag dust collector.

[0014] As shown in the figure: 1. Dust removal box; 2. Bag dust removal mechanism; 3. Filter; 4. Pulse cleaning mechanism; 5. Driving mechanism; 11. Air inlet; 12. Air collecting box; 13. Air outlet; 14. Dust collecting channel; 15. Discharge valve; 16. Dust exhaust port; 17. Power box; 18. Diffusion fan; 181. Hollow turntable; 182. Fan blades; 19. Support frame; 31. Horizontal pipe; 32. Transmission sleeve; 33. Turntable; 34. Support rod; 35. Bag; 36. Jet pipe; 37. Buckle; 311. Ventilation hole; 312, fixed rod; 313, fixed sleeve; 321, push table; 322, swivel; 323, gear; 361, jet nozzle; 41, gas storage and distribution tank; 42, gas distribution pipe; 43, solenoid valve; 51, fixed frame; 511, outer plate; 512, inner plate; 513, connecting beam; 52, moving frame; 521, rotating groove; 522, sliding sleeve; 523, slider; 53, cylinder one; 54, rotation drive mechanism; 541, cylinder two; 542, transverse frame; 543, slide rod; 544, rack. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0016] Combined with Figure 1 and attached Figure 2 As shown, a downstream structure bag dust collector includes a dust box 1, an air inlet 11 is provided on the top of the dust box 1, a power box 17 and an air collecting box 12 are provided on both sides of the dust box 1, an air outlet 13 is provided on the side of the air collecting box 12, a dust collecting channel 14 is provided at the bottom of the dust box 1, a discharge valve 15 is provided at the bottom of the dust collecting channel 14, a dust outlet 16 is provided below the discharge valve 15, and a bag dust removal mechanism 2 is provided in the dust box 1.

[0017] Combined with Figure 3 , Attachment Figure 4 , Attachment Figure 5 and attached Fig.11 As shown, the bag-type dust removal mechanism 2 includes a plurality of groups of filters 3, which are arranged horizontally. The filters 3 include a transverse tube 31 and a cloth bag 35, and the cloth bag 35 is wrapped around the outside of the transverse tube 31. One end of the transverse tube 31 is connected to the air collecting box 12, and a plurality of air vents 311 are provided on the transverse tube 31. The bag-type dust removal mechanism 2 also includes a pulse cleaning mechanism 4 and a driving mechanism 5. The pulse cleaning mechanism 4 vibrates the cloth bag 35 downward through compressed air pulses, and the driving mechanism 5 rotates the plurality of groups of filters 3 and drives the cloth bag 35 to stand up.

[0018] Working principle of the bag dust removal mechanism 2: After the dust-containing gas enters the air collecting box 12 from the upper air inlet 11, the gas enters the filter 3 through the micropores on the bag 35, and the dust is blocked and attached to the outside of the bag 35. After the filtered gas enters the cross pipe 31 through the air vent 311, it is collected and discharged into the air collecting box 12, and finally discharged from the air outlet 13. When cleaning the bag 35, the driving mechanism 5 cooperates with the filter 3 to open the bag 35, and then drives the filter 3 to rotate. The pulse cleaning mechanism 4 performs pulse jetting on the bag 35 to shake off the dust attached to the bag 35, and the dust falls downward into the dust collecting channel 14 and is discharged from the dust outlet 16.

[0019] Combined with Figure 3 , Attachment Figure 5 , Attachment Figure 6 and attached Figure 7 As shown, the filter 3 also includes a transmission sleeve 32, a turntable 33, a plurality of support rods 34 and a buckle 37. The transmission sleeve 32 is rotatably and slidably arranged at one end of the transverse tube 31, the turntable 33 is rotatably arranged at the other end of the transverse tube 31, and the end of the turntable 33 is rotatably arranged in the through hole of the air collecting box 12. A push platform 321 is provided at one end of the transmission sleeve 32 close to the turntable 33, and the two ends of the support rod 34 are respectively hinged to the push platform 321 and the turntable 33. The driving mechanism 5 drives the transmission sleeve 32 to move and rotate laterally, and the cloth bag 35 is arranged on the outside of the support rod 34. The two ends of the cloth bag 35 are respectively arranged in the grooves on the outside of the push platform 321 and the turntable 33, and the ends of the cloth bag 35 are locked by the buckle 37.

[0020] Working principle of filter 3: driving mechanism 5 drives transmission sleeve 32 to move laterally and rotate. When transmission sleeve 32 moves toward turntable 33, due to the reduction in the distance between transmission sleeve 32 and turntable 33, multiple struts 34 begin to deform and bend. Finally, through the deformation of struts 34, cloth bag 35 is opened to expose the negative side for easy cleaning. When cloth bag 35 is cleaned by pulse cleaning mechanism 4, transmission sleeve 32 is driven by driving mechanism 5 to rotate intermittently, so as to achieve the effect of comprehensive cleaning of cloth bag 35.

[0021] Combined with Figure 2 , Attachment Figure 6 , Attachment Figure 8 and attached Fig. 9 As shown, the driving mechanism 5 is arranged in the power box 17, and the driving mechanism 5 includes a fixed frame 51 and a movable frame 52. The fixed frame 51 is connected to the power box 17, and the fixed frame 51 includes an outer plate 511 and an inner plate 512. A plurality of connecting beams 513 are arranged between the outer plate 511 and the inner plate 512. The movable frame 52 is arranged between the outer plate 511 and the inner plate 512. A plurality of cylinders 53 are arranged on the outer plate 511, and the output end of the cylinder 53 is connected to the movable frame 52. A slider 523 is arranged on the inner side of the through hole of the movable frame 52, and the slider 523 is slidably matched with the groove on the connecting beam 513. A swivel 322 is arranged at one end of the transmission sleeve 32 through the through hole on the inner plate 512, and a rotating groove 521 rotatably matched with the swivel 322 is arranged on the movable frame 52. A fixed rod 312 is arranged at one end of the cross tube 31, and the fixed rod 312 is connected to the outer plate 511 after passing through the inner through hole of the transmission sleeve 32.

[0022] Working principle of driving mechanism 5: when the cloth bag 35 needs to be opened, multiple cylinders 53 synchronously push the mobile frame 52 to move toward the inner plate 512. Due to the rotation cooperation of the swivel ring 322 and the rotating groove 521, the mobile frame 52 drives the transmission sleeve 32 to move. When the mobile frame 52 moves, the slider 523 slides with the groove on the connecting beam 513 to make the gravity of the mobile frame 52 press on the connecting beam 513, thereby ensuring the stability of the movement of the mobile frame 52 and reducing the load of the cylinder 53. During this process, the cross pipe 31 does not move because its two ends are respectively connected to the outer plate 511 and the air collecting box 12.

[0023] Combined with Fig. 9 and attached Fig.10 As shown, the movable frame 52 is provided with a rotation drive mechanism 54, and the rotation drive mechanism 54 includes a cylinder 2 541 and a transverse frame 542. The cylinder 2 541 is arranged on the movable frame 52, and the transverse frame 542 is provided with multiple rows of sliding rods 543. The movable frame 52 is provided with a sliding sleeve 522 that slides with the sliding rod 543. A rack 544 is provided at the bottom of the sliding rod 543, and a gear 323 that meshes with the rack 544 is provided on the transmission sleeve 32.

[0024] Working principle of the rotation drive mechanism 54: when the filter 3 needs to be rotated, the cylinder 2 541 pushes the transverse frame 542 to move, and the sliding rod 543 on the transverse frame 542 slides in the sliding sleeve 522, driving the rack 544 to move laterally. Due to the meshing transmission of the rack 544 and the gear 323, the transmission sleeve 32 rotates. Since the two ends of the support rod 34 are respectively hinged to the push platform 321 and the turntable 33, the turntable 33 is driven to rotate on the air collecting box 12 through the support rod 34, thereby realizing the rotation of the filter 3, so that the surface of the cloth bag 35 is sequentially subjected to the pulse spraying of the pulse cleaning mechanism 4.

[0025] Combined with Figure 7 and attached Fig.12As shown, the pulse cleaning mechanism 4 includes an air storage and distribution tank 41, the input port of the air storage and distribution tank 41 is connected to an external compressed air pipeline, and multiple output ports are connected to air distribution pipes 42, each air distribution pipe 42 is provided with a solenoid valve 43, a fixed pipe sleeve 313 is provided on the inner side of the transverse pipe 31, and a jet pipe 36 is provided in the fixed pipe sleeve 313. The air distribution pipe 42 passes through the sealing hole at the top of the air collecting box 12 and enters the air collecting box 12, and is connected to the jet pipe 36 on the inner side of the transverse pipe 31. A plurality of jet ports 361 are evenly arranged at the bottom of the jet pipe 36, and the jet ports 361 are aligned with the through holes at the bottom of the transverse pipe 31.

[0026] Working principle of pulse cleaning mechanism 4: After external compressed air is delivered to the gas storage and distribution tank 41, the exhaust is controlled by the output port through the solenoid valve 43, the airflow enters the jet pipe 36 through the air distribution pipe 42, and is ejected through the jet port 361. By controlling the opening and closing frequency of the solenoid valve 43, a pulsed airflow is generated, thereby shaking off the dust on the outside of the bag 35.

[0027] Combined with Figure 2 and attached Fig.13 As shown, a support frame 19 is provided on the inner side of the air inlet 11, and a diffuser fan 18 is provided at the bottom of the support frame 19. The diffuser fan 18 includes a hollow turntable 181. The top of the hollow turntable 181 rotates with the support frame 19, and a plurality of blades 182 are provided on the outer side of the hollow turntable 181. The outer contours of the hollow turntable 181 and the blades 182 are both conical.

[0028] Working principle of the air dispersion fan 18: pressurized dust-laden airflow is input into the air inlet 11, and when it flows through the fan blades 182, it will be discharged into the air collecting box 12 along the curvature of the fan blades 182. Since the outer contours of the hollow turntable 181 and the fan blades 182 are both conical, the dust-laden airflow is not blown vertically to the filter 3, but is dispersed to the surroundings, so that the dust in the bag 35 accumulates evenly, preventing excessive accumulation in the middle section, clogging the mesh holes, or causing dust to enter the inside of the bag 35 due to positive pressure. During this process, the pressurized dust-laden airflow will drive the air dispersion fan 18 to rotate. At the end of the dust-laden airflow transportation, the air dispersion fan 18 rotates freely, thereby discharging the dust-laden tail flow inside the input pipe into the air collecting box 12, avoiding the dust-laden tail flow from staying in the input pipe, and reducing dust accumulation in the input pipe.

[0029] During the specific implementation of the present invention, the dust-containing gas generated by the furnace is transported through the pipeline and discharged into the gas collecting box 12 through the air inlet 11. A positive pressure is generated inside the gas collecting box 12. The dust-containing gas enters the transverse pipe 31 through the micropores on the bag 35 and is then discharged from the gas outlet 13 on the side of the gas collecting box 12. The dust is blocked on the outside of the bag 35. The diffuser fan 18 rotates under the push of the pressurized dust-containing gas to disperse the airflow. After the gas transportation is completed, the rotation of the diffuser fan 18 will discharge the tail flow in the input pipeline into the To the air collecting box 12, in the dust cleaning stage, the driving mechanism 5 pushes the transmission sleeve 32 to move, so that the multiple support rods 34 are deformed and bent, and the cloth bag 35 is opened to prevent the dust from being hidden on the dark side. Then the pulse dust cleaning mechanism 4 blows off the dust on the outside of the cloth bag 35 by means of pulse jet, and the driving mechanism 5 drives the filter 3 to rotate intermittently to blow off all the dust on the outer side of the cloth bag 35. The dust falls into the dust collecting channel 14, and the discharge valve 15 is opened, and the dust is discharged and collected through the dust discharge port 16; Since the dust-laden airflow input direction is consistent with the dust falling direction, the filtering stage can be carried out simultaneously with the cleaning stage. At this time, the discharge valve 15 is closed, and the driving mechanism 5 is driven in a fixed time period. There is no need to drive the cloth bag 35 to open and rotate all the time. When the pulse cleaning mechanism 4 is cleaning, it can use a layer-by-layer cleaning method to clean multiple filters 3. The space at the dust collecting channel 14 is at the bottom of the air collecting box 12 and has no exhaust port. The air flowability here is low. After the dust is cleaned, it will accumulate in the dust collecting channel 14 when it is discharged to the position of the dust collecting channel 14 with the air flow. After a certain amount of accumulation, the discharge valve 15 is opened to discharge the dust.

[0030] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and do not deviate from the purpose of the invention, they can creatively design a structure and embodiment similar to the technical solution, which should fall within the protection scope of the present invention.

Claims

1. A downstream structure bag dust collector, comprising a dust collecting box (1), the dust collecting box (1) being provided with an air inlet (11) and an air outlet (13), a dust collecting channel (14) being provided at the bottom of the dust collecting channel (1), a discharge valve (15) being provided at the bottom of the dust collecting channel (14), a dust discharge port (16) being provided below the discharge valve (15), a bag dust collecting mechanism (2) being provided inside the dust collecting box (1), and characterized in that: The air inlet (11) is arranged at the top of the dust removal box (1). The bag dust removal mechanism (2) includes a plurality of groups of filters (3). The filters (3) are arranged horizontally. The filters (3) include a transverse tube (31) and a bag (35). The bag (35) is wrapped around the outside of the transverse tube (31). One end of the filter (3) is provided with an air collecting box (12) connected to the air outlet (13). One end of the plurality of transverse tubes (31) is connected to the air collecting box (12). The bag dust removal mechanism (2) also includes a pulse cleaning mechanism (4) and a driving mechanism (5). The pulse cleaning mechanism (4) vibrates the bag (35) downwards through compressed air pulses. The driving mechanism (5) causes the plurality of groups of filters (3) to rotate and drives the bag (35) to be propped up. The filter (3) further comprises a transmission sleeve (32), a turntable (33) and a plurality of support rods (34); the transmission sleeve (32) is rotatably and slidably disposed at one end of the transverse tube (31); the turntable (33) is rotatably disposed at the other end of the transverse tube (31); a driving mechanism (5) drives the transmission sleeve (32) to move horizontally and rotate; a push platform (321) is disposed at one end of the transmission sleeve (32) close to the turntable (33); two ends of the support rod (34) are respectively hinged to the push platform (321) and the turntable (33); and a cloth bag (35) is disposed on the outside of the support rod (34); The driving mechanism (5) comprises a fixed frame (51) and a movable frame (52); the fixed frame (51) comprises an outer plate (511) and an inner plate (512); a plurality of connecting beams (513) are provided between the outer plate (511) and the inner plate (512); the movable frame (52) slides between the outer plate (511) and the inner plate (512); and the end of the transmission sleeve (32) is rotatably matched with the movable frame (52); The movable frame (52) is provided with a rotation drive mechanism (54), which comprises a second cylinder (541) and a transverse frame (542). The second cylinder (541) drives the transverse frame (542) to transversely move on the movable frame (52), and the transverse frame (542) drives the transmission sleeve (32) to rotate.

2. The downstream structure bag filter according to claim 1 is characterized in that: The filter (3) further comprises a buckle ring (37), and the two ends of the cloth bag (35) are respectively arranged in grooves outside the push platform (321) and the turntable (33), and the ends of the cloth bag (35) are locked by the buckle ring (37), and the ends of the turntable (33) are rotatably arranged in the through hole of the air collecting box (12).

3. The downstream bag filter according to claim 1 is characterized in that: The outer plate (511) is provided with a plurality of cylinders (53), the output end of each cylinder (53) is connected to the movable frame (52), a slider (523) is provided on the inner side of a through hole of the movable frame (52), the slider (523) is slidably matched with a groove on the connecting beam (513), one end of the transmission sleeve (32) passes through the through hole on the inner plate (512) and is provided with a rotating ring (322), and the movable frame (52) is provided with a rotating groove (521) rotatably matched with the rotating ring (322).

4. The downstream bag filter according to claim 1 is characterized in that: The second cylinder (541) is arranged on the moving frame (52), the transverse frame (542) is provided with a plurality of rows of sliding rods (543), the moving frame (52) is provided with a sliding sleeve (522) slidably matched with the sliding rod (543), the bottom of the sliding rod (543) is provided with a rack (544), and the transmission sleeve (32) is provided with a gear (323) meshing with the rack (544).

5. The downstream structure bag filter according to claim 1 is characterized in that: One end of the transverse tube (31) passes through the turntable (33) and is connected to a through hole on the air collecting box (12), and the other end is provided with a fixing rod (312). The fixing rod (312) passes through the inner through hole of the transmission sleeve (32) and is connected to the outer plate (511). A plurality of ventilation holes (311) are provided on the transverse tube (31).

6. The downstream bag filter according to claim 1 is characterized in that: The pulse cleaning mechanism (4) comprises an air storage and distribution tank (41), the input port of the air storage and distribution tank (41) is connected to an external compressed air pipeline, and multiple output ports are connected to air distribution pipes (42), each air distribution pipe (42) is provided with a solenoid valve (43), a fixed pipe sleeve (313) is provided on the inner side of the transverse pipe (31), an air injection pipe (36) connected to the air distribution pipe (42) is provided in the fixed pipe sleeve (313), and multiple air injection ports (361) are evenly arranged at the bottom of the air injection pipe (36), and the air injection ports (361) are aligned with the through holes at the bottom of the transverse pipe (31).

7. The downstream bag filter according to claim 1 is characterized in that: A support frame (19) is provided on the inner side of the air inlet (11), and an air diffusion fan (18) is provided on the bottom of the support frame (19). The air diffusion fan (18) comprises a hollow turntable (181), the top of the hollow turntable (181) is rotatably matched with the support frame (19), and a plurality of fan blades (182) are provided on the outer side of the hollow turntable (181). The outer contours of the hollow turntable (181) and the fan blades (182) are conical.

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