A purification device based on coal-fired boiler flue gas treatment

Abstract

The invention discloses a purification device based on coal-fired boiler flue gas treatment, comprising a ventilation frame and a filter bag fixedly connected thereto; a chain for contraction is provided in the filter bag, and a limit assembly is movably provided at the bottom end of the chain, and the bottom end of the limit assembly is fixedly connected to a support assembly, and the support assembly drives the link assembly through a hydraulic assembly to drive the support assembly to open and close, and to contract the chain through the drive assembly; in the invention, when the support assembly is separated by the link assembly, the support assembly tightens the filter bag connected to the chain, and at the same time the link assembly transmits the connection between the pulley and the drive assembly, so that the drive assembly drives the filter bag fixedly connected to the chain to contract inwardly through the link assembly, and vibrates and cleans the tightened filter bag position through the vibration assembly, so that the filter bag is separated by the block particles accumulated at the inward bending part, and the vibration assembly vibrates and cleans the filter bag at the tightened part, thereby improving the efficiency of filter bag cleaning and avoiding the phenomenon that the filter bag is damaged by the existing collision cleaning method.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler flue gas treatment, and in particular to a purification device based on coal-fired boiler flue gas treatment. Background Art

[0002] Coal-fired boilers produce a small amount of high-temperature flue gas during operation. The main flue gas treatment devices for coal-fired boilers include three types of flue gas treatment: bag-type flue gas treatment device, electrostatic flue gas treatment device, and wet flue gas treatment device. The bag-type flue gas treatment device is a device that separates and captures dust from dust-laden flue gas through dust removal bags. It has the advantages of high dust removal efficiency, even at low dust concentrations, simple operation, and reliable operation.

[0003] For example, the patent with publication number CN210874633U, named "A coal-fired boiler flue gas treatment device", and the authorization announcement date is June 30, 2020, which includes a shell, an air inlet equalizing flow pipe, a bracket, an air guide plate, an ash hopper, a middle box, an upper box and a smoke exhaust device; the smoke from the coal-fired boiler flows into the shell through the air inlet equalizing flow pipe, the air outlet on the top of the shell is connected to the smoke exhaust device, and the bottom of the shell is supported on the bracket; the ash hopper is arranged in the bottom cone of the shell, and the middle box and the upper box are arranged on the upper part of the shell and are located inside; the air guide plate is obliquely arranged between the ash hopper and the upper box, dividing the two into two compartments. The flue gas from a coal-fired boiler first passes through the ash hopper to slow down, allowing larger particles to settle naturally. Finer dust then enters the middle box and is adsorbed on the inner surface of the bag. Clean air then enters the upper box and is discharged into the atmosphere through the exhaust device. Since larger particles first settle naturally through the ash hopper, the bag only needs to filter fine particles, which can greatly reduce the resistance of the flue gas treatment device and reduce energy consumption.

[0004] The shortcoming of the existing technology is that since the bag is cleaned in the box by collision and shaking, the filter bag and its internal supporting mechanism are damaged by external force collision. At the same time, the shaking amplitude of the bag causes the dust in the ash hopper to float again, and the re-deposited dust particles are adsorbed on the filter bag, affecting the efficiency of the filter bag cleaning. Summary of the Invention

[0005] The purpose of the present invention is to provide a purification device based on coal-fired boiler flue gas treatment. When the hydraulic component drives the linkage component to separate the support component, the support component tightens the filter bag connected to the chain, and at the same time the linkage component transmits the connection between the pulley and the drive component, so that the drive component drives the filter bag fixedly connected to the chain to shrink inward through the linkage component, and the tightened filter bag position is vibrated and cleaned by the vibration component, so that the filter bag is separated by the block particles accumulated at the inward bend and the vibration component vibrates and cleans the filter bag at the tightened position; the efficiency of the filter bag cleaning is improved, and the filter bag is avoided from being damaged by the existing collision cleaning method.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a purification device based on coal-fired boiler flue gas treatment, including a ventilation frame and a filter bag fixedly connected thereto; a chain for contraction is provided in the filter bag, and a limit assembly is movably provided at the bottom end of the chain, and a support assembly is fixedly connected to the bottom end of the limit assembly, and the support assembly drives the linkage assembly through the hydraulic assembly to drive the support assembly to open and close, and the transmission chain is contracted through the drive assembly; it also includes a vibration assembly, which vibrates the chain wrapped around the support assembly and the filter bag through the linkage assembly to remove dust.

[0007] As a further description of the above technical solution:

[0008] The chain includes a fixing plate, and the fixing plate is sewn to the filter bag. One end of the fixing plate is fixedly connected to a support bar, and one end of the support bar away from the fixing plate is symmetrically fixedly connected to a limiting rod.

[0009] As a further description of the above technical solution:

[0010] The limiting assembly includes a connecting arm, one end of the connecting arm is fixedly connected to an arc-shaped plate, one end of the arc-shaped plate is provided with a group of guide wheels in a straight line, the outer cover of the guide wheel is provided with a conveyor belt, the outer surface of the arc-shaped plate is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a guide frame, and the outer cover of the guide frame is provided with a guide belt.

[0011] As a further description of the above technical solution:

[0012] The support assembly includes a lower support arm, and rotating shaft rods are symmetrically provided at both ends of the lower support arm. One end of the rotating shaft rod is movably connected to a crescent plate, and one end of the crescent plate is movably provided with a guide roller, and a clamping belt is wrapped around the guide roller.

[0013] As a further description of the above technical solution:

[0014] The hydraulic assembly includes a support frame, the top of the support frame is fixedly connected to a hydraulic pump, the hydraulic pump passes through the support frame and is transmission-connected to a hydraulic rod, the bottom end of the hydraulic rod is fixedly connected to a connecting sleeve, and the connecting sleeve is transmission-connected to a linkage assembly.

[0015] As a further description of the above technical solution:

[0016] The driving assembly includes a U-shaped frame, which has symmetrical directional grooves at both ends, and a movable shaft is slidably provided in the directional groove. The bottom end of the U-shaped frame is fixedly connected to a driving motor, and one end of the driving motor is transmission-connected to an output shaft, and the output shaft is arranged directly below the transmission wheel.

[0017] As a further description of the above technical solution:

[0018] The linkage assembly includes a linkage arm, the top of the linkage arm is fixedly connected to a movable shaft, and the movable shaft is adapted to a limit sleeve, the movable shaft is rotatably connected to a transmission wheel at one end close to the linkage arm, the bottom end of the linkage arm is movably connected to a pulley, and a toothed disk is symmetrically fixedly connected to the outer side of the pulley, and the toothed disk is engaged with the chain.

[0019] As a further description of the above technical solution:

[0020] A support arm is symmetrically provided at the bottom end of the linkage arm, and the support arm is provided on a rotating shaft between the linkage arm and the pulley. A support member is provided at one end of the support arm away from the linkage arm, and the support member is rotatably provided on the crescent plate. A rubber belt is provided on the outside of the transmission member, and the rubber belt is respectively connected to the transmission wheel and the pulley.

[0021] As a further description of the above technical solution:

[0022] The support member includes a connecting shaft, the outer side of the connecting shaft is rotatably connected to a support wheel, and the support wheel is adapted to the rubber belt. One end of the connecting shaft is rotatably arranged on a crescent plate, and the other end of the connecting shaft is provided with a support arm.

[0023] As a further description of the above technical solution:

[0024] The vibration assembly includes a protruding rod, which is arranged in a guide groove opened by the linkage arm, and transmission rods are symmetrically provided at both ends of the protruding rod, and the transmission rod is fixedly connected to the vibration rod; the end of the protruding rod close to the transmission rod is fixedly connected to a limiting sleeve, and the top of the limiting sleeve is fixedly connected to a directional shaft, a support spring is provided on the outside of the directional shaft, and the top of the support spring is fixedly connected to a limiting block, and the directional shaft passes through the limiting block.

[0025] The present invention provides a purification device based on coal-fired boiler flue gas treatment, which has the following beneficial effects:

[0026] In the present invention, when the hydraulic assembly drives the linkage assembly to separate the support assembly, the support assembly tightens the filter bag connected to the chain, and at the same time the linkage assembly transmits the connection between the pulley and the driving assembly, so that the driving assembly drives the filter bag fixedly connected to the chain to shrink inward through the linkage assembly, and the tightened filter bag position is vibrated and cleaned by the vibration assembly, so that the filter bag is separated by the block particles accumulated at the inward bending part, and the vibration assembly vibrates and cleans the filter bag at the tightening part, thereby improving the efficiency of the filter bag cleaning and avoiding the phenomenon of the filter bag being damaged by the existing collision cleaning method. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a purification device based on coal-fired boiler flue gas treatment proposed by the present invention;

[0028] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle;

[0029] Figure 3 Schematic diagram of the structure of the filter bag in the present invention;

[0030] Figure 4 Schematic diagram of the structure of the linkage assembly in the present invention;

[0031] Figure 5 Schematic diagram of the structure of the vibration component of the present invention;

[0032] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at B in the middle;

[0033] Figure 7 It is a structural schematic diagram of the hydraulic assembly in the present invention;

[0034] Figure 8 Schematic diagram of the structure of the drive assembly in the present invention;

[0035] Figure 9 Schematic diagram of the structure of the limit assembly in the present invention;

[0036] Figure 10 It is a structural schematic diagram of the support assembly in the present invention.

[0037] Legend: 1. Ventilation frame; 2. Filter bag; 3. Chain; 31. Fixing plate; 32. Support bar; 33. Limit rod; 4. Limit assembly; 41. Connecting arm; 42. Curved plate; 43. Guide wheel; 44. Conveyor belt; 45. Connecting rod; 46. Guide frame; 47. Guide belt; 5. Support assembly; 51. Lower arm; 52. Rotating shaft; 53. Crescent plate; 54. Guide roller; 55. Clamping belt; 6. Hydraulic assembly; 61. Support frame; 62. Hydraulic pump; 63. Hydraulic rod; 64 , connecting sleeve; 7, vibration assembly; 71, protruding rod; 72, transmission rod; 73, limiting sleeve; 74, directional shaft; 75, support spring; 76, limiting block; 8, driving assembly; 81, U-shaped frame; 82, directional slot; 83, driving motor; 84, output shaft; 9, linkage assembly; 91, linkage arm; 92, gear plate; 921, pulley; 93, support arm; 94, support member; 941, connecting shaft; 942, support wheel; 95, movable shaft; 96, transmission wheel; 97, rubber belt. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Reference Figure 1-10 A purification device based on coal-fired boiler flue gas treatment includes a ventilation frame 1 and a filter bag 2 fixedly connected thereto; a chain 3 for retraction is provided in the filter bag 2, and a limit assembly 4 is movably provided at the bottom end of the chain 3. The bottom end of the limit assembly 4 is fixedly connected to a support assembly 5, and the support assembly 5 drives a linkage assembly 9 through a hydraulic assembly 6 to drive the support assembly 5 to open and close, and drives the chain 3 to retract through a drive assembly 8; and further includes a vibration assembly 7, which vibrates the chain 3 and the filter bag 2 tightened around the support assembly 5 through the linkage assembly 9 to remove dust;

[0040] Specifically, the ventilation frame 1 is rectangular and is arranged in the dust removal equipment shell (the dust removal equipment is a particle bag dust removal device in the prior art). The filter bag 2 fixedly connected to the bottom end of the ventilation frame 1 and the chain 3 fixedly connected in the filter bag 2 are bent inward to form an inward concave structure. A limit assembly 4 and a support assembly 5 are provided at the arc of the chain 3. When the hydraulic assembly 6 drives the linkage assembly 9 to separate the support assembly 5, the support assembly 5 tightens the filter bag 2 connected to the chain 3. At the same time, the linkage assembly 9 transmits the pulley 921 to the driving assembly 8, so that the driving assembly 8 drives the filter bag 2 fixedly connected to the chain 3 to retract inward through the linkage assembly 9, and vibrates and cleans the tightened filter bag 2 position through the vibration assembly 7, so that the filter bag 2 is broken and separated by the block particles accumulated at the inward bending part, and the vibration assembly 7 vibrates and cleans the filter bag 2 at the tightening part; the efficiency of cleaning the filter bag 2 is improved, and the filter bag 2 is avoided from being damaged by the existing collision cleaning method;

[0041] The chain 3 includes a fixing plate 31, and the fixing plate 31 is sewn together with the filter bag 2. One end of the fixing plate 31 is fixedly connected to a support bar 32, and the end of the support bar 32 away from the fixing plate 31 is symmetrically fixedly connected to a limit rod 33.

[0042] Specifically, the fixing piece 31 in the chain 3 is fixed to the filter bag 2 by sewing, and the support bar 32 and the limiting rod 33 fixedly connected to one end of the fixing piece 31 are clamped and supported by the limiting assembly 4 and the supporting assembly 5; through the cooperation of the linkage assembly 9 and the driving assembly 8, the limiting assembly 4 and the supporting assembly 5 can retract the filter bag 2 inward or expand it outward;

[0043] The limiting assembly 4 includes a connecting arm 41, one end of which is fixedly connected to a curved plate 42, one end of which is provided with a set of guide wheels 43 in a straight line, and a conveyor belt 44 is provided on the outer surface of the guide wheels 43, a connecting rod 45 is fixedly connected to the outer surface of the curved plate 42, one end of which is fixedly connected to a guide frame 46, and a guide belt 47 is provided on the outer surface of the guide frame 46;

[0044] Specifically, the connecting arm 41 in the limiting assembly 4 is fixed to the U-shaped frame 81 provided in the driving assembly 8, and the arc-shaped plate 42 fixedly connected by one end of the connecting arm 41 is provided between the support bar 32 and the limiting rod 33. The guide wheel 43 distributed in a straight line at one end of the arc-shaped plate 42 and the conveyor belt 44 sleeved on the outside thereof are pressed against the limiting rod 33. The guide frame 46 fixedly connected to the arc-shaped plate 42 by the connecting rod 45 and the guide belt 47 sleeved on the outside thereof clamp the limiting rod 33, and the chain 3 in the filter bag 2 is limited in a U-shaped structure in a symmetrical structure to maintain the stability of the device when in use;

[0045] The support assembly 5 includes a lower support arm 51, with rotating shafts 52 symmetrically provided at both ends of the lower support arm 51. One end of the rotating shaft 52 is movably connected to a crescent plate 53, and one end of the crescent plate 53 is movably provided with a guide roller 54. A clamping belt 55 is wrapped around the guide roller 54.

[0046] Specifically, the lower arm 51 in the support assembly 5 is fixedly connected to the bottom end of the U-shaped frame 81 provided in the drive assembly 8. A crescent plate 53 is symmetrically rotated at the bottom end of the lower arm 51. The guide roller 54 rotatably connected to the crescent plate 53 and the clamping belt 55 sleeved on the outer side thereof are both provided in the chain 3 (between the fixed plate 31 and the limit rod 33). The clamping belt 55 is respectively fitted with the fixed plate 31 and the limit rod 33, so that the linkage assembly 9 drives the crescent plate 53 to expand the support chain 3 to both ends, so as to tighten the filter bag 2 fixedly connected to the chain 3.

[0047] The hydraulic assembly 6 includes a support frame 61, the top of the support frame 61 is fixedly connected to a hydraulic pump 62, the hydraulic pump 62 passes through the support frame 61 and is transmission-connected to a hydraulic rod 63, the bottom end of the hydraulic rod 63 is fixedly connected to a connecting sleeve 64, and the connecting sleeve 64 is transmission-connected to a linkage assembly 9; the driving assembly 8 includes a U-shaped frame 81, the two ends of the U-shaped frame 81 are symmetrically provided with orientation grooves 82, and a movable shaft 95 is slidingly provided in the orientation groove 82, the bottom end of the U-shaped frame 81 is fixedly connected to a driving motor 83, one end of the driving motor 83 is transmission-connected to an output shaft 84, and the output shaft 84 is located directly below the transmission wheel 96;

[0048] Specifically, the support frame 61 in the hydraulic assembly 6 is fixed on the connecting arm 41, and the hydraulic rod 63 is driven to move in a directional manner by the hydraulic pump 62. A movable shaft 95 is sleeved in the connecting sleeve 64 fixedly connected to the bottom end of the hydraulic rod 63. The transmission wheels 96 symmetrically connected to the two ends of the movable shaft 95 move downward along the directional groove 82 provided on the U-shaped frame 81 through the connecting sleeve 64, so that the transmission wheel 96 is connected to the output shaft 84 connected to the drive motor 83, thereby realizing that the drive assembly 8 drives the filter bag 2 to retract or extend;

[0049] The linkage assembly 9 includes a linkage arm 91, the top of which is fixedly connected to a movable shaft 95, and the movable shaft 95 is adapted to the limiting sleeve 73, and the movable shaft 95 is rotatably connected to a transmission wheel 96 at one end close to the linkage arm 91, and the bottom of the linkage arm 91 is movably connected to a pulley 921, and the outer side of the pulley 921 is symmetrically fixedly connected to a toothed disk 92, and the toothed disk 92 is engaged with the chain 3; the bottom of the linkage arm 91 is symmetrically provided with a support arm 93, and the support arm 93 is provided on the rotating shaft between the linkage arm 91 and the pulley 921. A support member 94 is provided at one end of the support arm 93 away from the linkage arm 91, and the support member 94 is rotatably mounted on the crescent plate 53. A rubber belt 97 is sleeved on the outer side of the transmission member, and the rubber belt 97 is respectively connected to the transmission wheel 96 and the pulley 921; the support member 94 includes a connecting shaft 941, and the outer side of the connecting shaft 941 is rotatably connected to the support wheel 942, and the support wheel 942 is adapted to the rubber belt 97. One end of the connecting shaft 941 is rotatably mounted on the crescent plate 53, and the other end of the connecting shaft 941 is provided with the support arm 93;

[0050] Specifically, the linkage arm 91 in the linkage assembly 9 is fixedly connected to the movable shaft 95. When the linkage arm 91 drives the movable shaft 95 downwardly when the hydraulic rod 63 drives the linkage arm 91, the pulley 921 connected to the bottom end of the linkage arm 91 and the toothed plate 92 fixedly connected thereto are engaged with the chain 3, so that the pulley 921 and the toothed plate 92 are tightly fitted according to the tension of the chain 3 and the filter bag 2, thereby achieving the stability of the contraction and extension movement of the filter bag 2 by the drive assembly 8. The support arm 93 symmetrically arranged at the bottom end of the linkage arm 91 unfolds the crescent plate 53 symmetrically arranged in the support assembly 5 through the support member 94 and tightens the filter bag 2, and the rubber belt 97 (attached) wound around the transmission wheel 96 in the movable shaft 95, the support member 94 in the crescent plate 53 and the pulley 921 is tightened. Figure 5 As shown in FIG5 ), the filter bag 2 fixedly connected to the chain 3 is driven by the driving assembly 8 to contract and stretch, thereby bending and breaking the particles agglomerated on the outer surface of the filter bag 2, thereby improving the effect of cleaning the particles on the outer surface of the filter bag 2;

[0051] The vibration assembly 7 includes a protruding rod 71, which is arranged in a guide groove formed in the linkage arm 91. Transmission rods 72 are symmetrically provided at both ends of the protruding rod 71, and the transmission rods 72 are fixedly connected to the vibration rod; the end of the protruding rod 71 close to the transmission rod 72 is fixedly connected to a limiting sleeve 73, the top of the limiting sleeve 73 is fixedly connected to an orientation shaft 74, a support spring 75 is provided on the outside of the orientation shaft 74, the top of the support spring 75 is fixedly connected to a limiting block 76, and the orientation shaft 74 passes through the limiting block 76;

[0052] Specifically, the protruding rod 71 in the vibration assembly 7 passes through the linkage arm 91 and is movably mounted on the linkage arm 91 through a directional shaft 74 fixedly connected by a limiting sleeve 73. When the linkage arm 91 moves downward, the supporting spring 75 is forced to press the protruding rod 71 against the toothed disk 92. When the toothed disk 92 drives the protruding rod 71 to vibrate under the transmission of the driving assembly 8, the vibration rod connected to the protruding rod 71 vibrates and cleans the tightened part of the filter bag 2, so that the particulate matter adsorbed on the outer surface of the filter bag 2 is separated from the filter bag 2 under the vibration of the vibration rod, thereby improving the effect of cleaning the particulate matter on the outer surface of the filter bag 2.

[0053] Working principle: The ventilation frame 1 is rectangular and is arranged in the shell of the dust removal equipment (the dust removal equipment is a particle bag dust removal device in the prior art). The filter bag 2 fixedly connected to the bottom end of the ventilation frame 1 and the chain 3 fixedly connected to the filter bag 2 are bent inward to form a concave structure. A limit assembly 4 and a support assembly 5 are provided at the arc of the chain 3. When the hydraulic assembly 6 drives the linkage assembly 9 to separate the support assembly 5, the linkage arm 91 in the linkage assembly 9 is fixedly connected to the movable shaft 95. When the linkage arm 91 drives the movable shaft 95 downward when the hydraulic rod 63 drives the linkage arm 91 to move downward, the linkage arm 91 The pulley 921 connected to the bottom end and the toothed disc 92 fixedly connected thereto are engaged with the chain 3, so that the pulley 921 and the toothed disc 92 fit closely together when the chain 3 and the filter bag 2 are tightened, thereby achieving the stability of the contraction and extension movement of the filter bag 2 by the drive assembly 8. The support arm 93 symmetrically arranged at the bottom end of the linkage arm 91 unfolds the crescent plate 53 symmetrically arranged in the support assembly 5 through the support member 94 and tightens the filter bag 2. The rubber belt 97 (attached) wound around the transmission wheel 96 in the movable shaft 95, the support member 94 in the crescent plate 53 and the pulley 921 is Figure 5 When the filter bag 2 is tightened, the filter bag 2 connected to the chain 3 is tightened by the support assembly 5, and the linkage assembly 9 transmits the pulley 921 to the driving assembly 8. Secondly, the protruding rod 71 in the vibration assembly 7 passes through the linkage arm 91 and is movably installed on the linkage arm 91 through the directional shaft 74 fixedly connected by the limit sleeve 73. When the linkage arm 91 moves downward, the support spring 75 is forced to press the protruding rod 71 against the toothed plate 92. When the toothed plate 92 is driven by the drive assembly 8, the protruding rod 71 is shaken, so that the vibration rod connected to the protruding rod 71 vibrates and cleans the tightened part of the filter bag 2, so that the drive assembly 8 drives the filter bag 2 fixedly connected to the chain 3 to retract inwardly through the linkage assembly 9, and vibrates and cleans the tightened filter bag 2 position through the vibration assembly 7, so that the filter bag 2 is broken and separated by the block particles accumulated at the inward bending part, and the vibration assembly 7 vibrates and cleans the filter bag 2 at the tightened part; improves the efficiency of cleaning the filter bag 2 and avoids the damage of the filter bag 2 by the existing collision cleaning method.

[0054] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A purification device based on coal-fired boiler flue gas treatment, characterized in that: It comprises a ventilation frame (1) and a filter bag (2) fixedly connected thereto; A chain (3) for contraction is provided in the filter bag (2), a limit assembly (4) is movably provided at the bottom end of the chain (3), a support assembly (5) is fixedly connected to the bottom end of the limit assembly (4), and the support assembly (5) drives the linkage assembly (9) through the hydraulic assembly (6) to drive the support assembly (5) to open and close, and drives the chain (3) to contract through the drive assembly (8); The chain (3) includes a fixing plate (31), and the fixing plate (31) is sewn to the filter bag (2), one end of the fixing plate (31) is fixedly connected to a support bar (32), and one end of the support bar (32) away from the fixing plate (31) is symmetrically fixedly connected to a limit rod (33); The limiting assembly (4) includes a connecting arm (41), one end of the connecting arm (41) is fixedly connected to an arc-shaped plate (42), one end of the arc-shaped plate (42) is provided with a group of guide wheels (43) in a straight line, the outer cover of the guide wheel (43) is provided with a conveyor belt (44), the outer surface of the arc-shaped plate (42) is fixedly connected to a connecting rod (45), one end of the connecting rod (45) is fixedly connected to a guide frame (46), and the outer cover of the guide frame (46) is provided with a guide belt (47); The hydraulic assembly (6) includes a support frame (61), the top end of the support frame (61) is fixedly connected to a hydraulic pump (62), the hydraulic pump (62) passes through the support frame (61) and is transmission-connected to a hydraulic rod (63), the bottom end of the hydraulic rod (63) is fixedly connected to a connecting sleeve (64), and the connecting sleeve (64) is transmission-connected to a linkage assembly (9); The invention also includes a vibration assembly (7), which vibrates and removes dust by tightening the chain (3) wound around the support assembly (5) and the filter bag (2) through the linkage assembly (9); the vibration assembly (7) includes a protruding rod (71), the protruding rod (71) is arranged in a guide groove provided in the linkage arm (91), and transmission rods (72) are symmetrically provided at both ends of the protruding rod (71), and the transmission rod (72) is fixedly connected to the vibration rod; the end of the protruding rod (71) close to the transmission rod (72) is fixedly connected to the limiting sleeve (73), the top end of the limiting sleeve (73) is fixedly connected to the directional shaft (74), the outer side of the directional shaft (74) is provided with a support spring (75), the top end of the support spring (75) is fixedly connected to the limiting block (76), and the directional shaft (74) passes through the limiting block (76).

2. A purification device based on coal-fired boiler flue gas treatment according to claim 1, characterized in that: The support assembly (5) comprises a lower support arm (51), wherein two ends of the lower support arm (51) are symmetrically provided with rotating shaft rods (52), one end of the rotating shaft rod (52) is movably connected to a crescent plate (53), and one end of the crescent plate (53) is movably provided with a guide roller (54), and a clamping belt (55) is wound around the guide roller (54).

3. The purification device based on coal-fired boiler flue gas treatment according to claim 1 is characterized in that: The driving assembly (8) includes a U-shaped frame (81), and the U-shaped frame (81) is symmetrically provided with orientation slots (82) at both ends, and a movable shaft (95) is slidably provided in the orientation slot (82). The bottom end of the U-shaped frame (81) is fixedly connected to a driving motor (83), and one end of the driving motor (83) is transmission-connected to an output shaft (84), and the output shaft (84) is arranged directly below the transmission wheel (96).

4. The purification device based on coal-fired boiler flue gas treatment according to claim 1 is characterized in that: The linkage assembly (9) comprises a linkage arm (91), a top end of the linkage arm (91) is fixedly connected to a movable shaft (95), and the movable shaft (95) is adapted to the limiting sleeve (73), an end of the movable shaft (95) close to the linkage arm (91) is rotatably connected to a transmission wheel (96), a bottom end of the linkage arm (91) is movably connected to a pulley (921), an outer side of the pulley (921) is symmetrically fixedly connected to a toothed disc (92), and the toothed disc (92) is engaged with the chain (3).

5. The purification device based on coal-fired boiler flue gas treatment according to claim 4 is characterized in that: The bottom end of the linkage arm (91) is symmetrically provided with a support arm (93), and the support arm (93) is provided on a rotating shaft between the linkage arm (91) and the pulley (921). The end of the support arm (93) away from the linkage arm (91) is provided with a support member (94), and the support member (94) is rotatably provided on the crescent plate (53). The outer side of the transmission wheel (96) is provided with a rubber belt (97), and the rubber belt (97) is respectively connected to the transmission wheel (96) and the pulley (921).

6. The purification device based on coal-fired boiler flue gas treatment according to claim 5 is characterized in that: The support member (94) comprises a connecting shaft (941), the outer side of which is rotatably connected to a support wheel (942), and the support wheel (942) is adapted to a rubber belt (97). One end of the connecting shaft (941) is rotatably mounted on a crescent plate (53), and the other end of the connecting shaft (941) is provided with a support arm (93).

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