Tail gas purification treatment device for cremation machine

Abstract

The utility model discloses a cremation machine tail gas purification treatment device which comprises a ventilation cavity, ventilation holes are symmetrically formed in the end face of the ventilation cavity in a penetrating mode, a connecting cavity is formed in one end of the ventilation cavity, a filter screen double-face cleaning assembly is arranged at the other end of the end face of the ventilation cavity, and filter screen exchange assemblies are arranged on the filter screen double-face cleaning assembly and the ventilation cavity. A transmission cavity is formed in one end of the filter screen double-face cleaning assembly, a communicating assembly is arranged on the ventilation cavity, the communicating assembly and the filter screen double-face cleaning assembly are arranged at intervals, a filter cotton adsorption cavity is formed in the end face of the transmission cavity, one end of the filter cotton adsorption cavity is connected with an activated carbon adsorption cavity, and an air outlet pipe is arranged on the end face of the activated carbon adsorption cavity. The utility model belongs to the technical field of tail gas treatment, a plurality of dust filter screens are arranged to be rotatable and alternate between a filtering function and a cleaning function, the separation of toxic gas and smoke dust and the cleaning of the dust filter screens can be completed without stopping the device, and the use efficiency of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tail gas treatment, and in particular relates to a tail gas purification treatment device for a crematorium. Background Art

[0002] A cremator, also known as a crematorium, incinerator, or corpse refining furnace, refers to equipment used to cremate corpses. It is a type of incinerator. Cremation smoke will be generated during the incineration process. The cremation smoke contains a large amount of smoke and toxic gases. Therefore, the cremation smoke needs to be treated. Before treating the toxic gas, the smoke needs to be separated from the toxic gas. When using a filter to separate, a large amount of smoke will clog the filter, seriously affecting the purification effect. In addition, in general filtering and separation devices, the filter needs to be cleaned frequently. At this time, the device needs to stop working, which reduces the efficiency of the device.

[0003] Therefore, a crematorium tail gas purification treatment device is needed to solve the above problems. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a cremator exhaust gas purification treatment device, in which the dust filter is arranged to be rotatable and alternates between the filtering function and the cleaning function. The separation of toxic gases and smoke and the cleaning of the dust filter can be completed without stopping the device, thereby improving the use efficiency of the device.

[0005] The technical solution adopted by the utility model is as follows: a crematorium exhaust gas purification treatment device, comprising a ventilation chamber, the end face of the ventilation chamber is symmetrically penetrated with ventilation holes, one end of the ventilation chamber is provided with a connecting chamber, the other end of the end face of the ventilation chamber is provided with a filter double-sided cleaning component, the filter double-sided cleaning component and the ventilation chamber are provided with a filter exchange component, one end of the filter double-sided cleaning component is provided with a transmission chamber, the ventilation chamber is provided with a connecting component, the connecting component and the filter double-sided cleaning component are arranged at intervals, the end face of the transmission chamber is provided with a filter cotton adsorption chamber, one end of the filter cotton adsorption chamber is connected to an activated carbon adsorption chamber, and the end face of the activated carbon adsorption chamber is provided with an outlet pipe.

[0006] Furthermore, the connecting cavity is a cylindrical structure with openings at both ends, a connecting partition is provided in the middle of the connecting cavity, the connecting partition divides the connecting cavity into two parts, and an exhaust fan is provided on the connecting partition.

[0007] Furthermore, the connecting component includes a connecting bridge frame 2, a docking tube 2 and a docking tube 1. The docking tube 1 is arranged in a hollow cylindrical cavity with openings at both ends. The docking tube 1 is arranged at the ventilation hole at the end of the ventilation cavity. The connecting bridge frame 2 is arranged in a U-shape. One end of the connecting bridge frame 2 is arranged on the outer side wall of the docking tube 1. The docking tube 2 is arranged in a hollow cylindrical cavity with openings at both ends. The docking tube 2 is arranged at the other end of the connecting bridge frame 2, and the docking tube 1 and the docking tube 2 are aligned.

[0008] Furthermore, the filter screen double-sided cleaning assembly includes a connecting bridge frame 1, a side rotating shaft, a pulley 1, an upper rotating shaft, a connecting bevel gear, a transmission bevel gear, a central shaft, a pulley 2, a pulley 3, a cleaning shaft, a connecting disc, a cleaning splint, a transmission belt 1 and a transmission belt 2, one end of the central shaft is arranged at the end center of the ventilation cavity, the cleaning splints are arranged in pairs, one of the cleaning splints is arranged at the end surface of the ventilation cavity, the cleaning splints are arranged at intervals with the docking tube 1, the connection line of the two cleaning splints is arranged perpendicular to the connection line of the two docking tubes 1, the connecting bridge frame 1 is arranged in a U shape, one end of the connecting bridge frame 1 is arranged on the outer side wall of the docking tube 1, the other cleaning splint is arranged on the other end of the connecting bridge frame 1, the upper rotating shaft is arranged on the inner bottom wall of the connecting bridge frame 1, the connecting cone The gear is arranged on the upper rotating shaft, and the side rotating shaft is symmetrically passed through the two side walls of the connecting bridge frame one, the transmission bevel gear is arranged at one end of the side rotating shaft, and the transmission bevel gear is arranged in the connecting bridge frame one, the pulley two is arranged at the other end of the side rotating shaft, and the transmission bevel gear is meshed with the connecting bevel gear, the outer wall of the cleaning splint is provided with a placement groove, and the edge of the cleaning splint is provided with a connecting groove, the cleaning shaft passes through the center of the cleaning splint, the pulley three is arranged on the cleaning shaft, the pulley three is arranged in the placement groove, the transmission belt one is arranged on the pulley two and the pulley three, the transmission belt one is arranged in the placement groove and the connecting groove, the pulley one is arranged on the upper end of the cleaning shaft, the pulley one is arranged on the center axis, and the transmission belt two is arranged on two pulleys three and the pulley one.

[0009] Furthermore, the filter exchange assembly includes a motor rack, a transmission motor, a driving shaft, a driving gear and a driven gear plate. The motor rack is mounted on the outer wall of the ventilation chamber, the driven gear plate is rotatably mounted on the central axis, the driven gear plate is disposed between docking tube one and docking tube two, the driven gear plate is disposed between two cleaning clamps, the driving shaft is passed through the motor rack, the transmission motor is disposed on the side wall of the motor rack, the transmission motor is connected to one end of the driving shaft, the driving gear is disposed at the other end of the driving shaft, the driving gear is meshed with the driven gear plate, and a dust filter is arrayed on the driven gear plate.

[0010] Furthermore, the inner wall of the cleaning splint is provided with a cleaning rotating groove, the connecting disk is provided at the inner end of the cleaning shaft, the connecting disk is provided in the cleaning rotating groove, the side wall array of the connecting disk is provided with a cleaning rod, and the cleaning rod is provided with a cleaning brush.

[0011] Furthermore, the transmission cavity is provided as a hollow cylindrical cavity with one end open, and the inner bottom wall of the transmission cavity is symmetrically provided with docking holes, and the docking holes are aligned with the second docking tube.

[0012] Furthermore, the central shaft passes through the bottom wall of the transmission cavity, and a transmission fan is provided at the end of the central shaft, and the transmission fan is arranged in the transmission cavity.

[0013] After adopting the above structure, the utility model has the following beneficial effects:

[0014] 1. The exhaust fan draws the gas in the cremator into the connecting chamber, and then enters the vent hole of the ventilation chamber through the connecting chamber, enters the docking tube 1 through the vent hole, and then passes through the dust filter to filter the dust on the dust filter. The filtered gas enters the docking tube 2, and then enters the transmission chamber through the docking tube 2, and then enters the filter cotton adsorption chamber to adsorb and filter the dust again, and then enters the activated carbon adsorption chamber to complete the gas purification, and finally discharged from the outlet pipe;

[0015] 2. When the gas enters the transmission chamber, the gas drives the transmission fan to rotate, the transmission fan drives the center shaft to rotate, the center shaft drives pulley one to rotate, pulley one drives pulley one to rotate through transmission belt two, pulley one drives the cleaning shaft to rotate, the cleaning shaft drives one of the connecting disks to rotate, the connecting disk drives the cleaning rod to rotate, and the cleaning brush on the cleaning rod cleans one side of the dust filter between the cleaning splints, and then uses the steering function of the transmission bevel gear and the connecting bevel gear to drive the cleaning shaft to rotate the other connecting disk, the connecting disk drives the cleaning rod to rotate, and the cleaning brush on the cleaning rod cleans the other side of the dust filter between the cleaning splints, so that both sides of the dust filter can be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of a cremator tail gas purification treatment device of the utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of the connecting cavity;

[0019] Figure 3is a schematic diagram of the three-dimensional structure of the ventilation cavity;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the filter double-side cleaning component, the connecting component and the filter exchange component;

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the driven gear plate;

[0022] Figure 6 for Figure 4 A top view of

[0023] Figure 7 for Figure 6 A magnified view of part A;

[0024] Figure 8 for Figure 1 A magnified view of part B;

[0025] Fig. 9 A three-dimensional structural schematic diagram showing the positional relationship between the connecting component and the filter double-sided cleaning component;

[0026] Fig.10 for Fig. 9 A magnified view of part C in FIG.

[0027] Fig.11 A schematic diagram of the internal structure of the cleaning splint;

[0028] Fig.12 Schematic diagram of the internal structure of the transmission cavity.

[0029] Among them, 1. ventilation chamber, 2. ventilation hole, 3. connecting chamber, 4. filter double-sided cleaning component, 5. filter exchange component, 6. transmission chamber, 7. connecting component, 8. filter cotton adsorption chamber, 9. activated carbon adsorption chamber, 10. outlet pipe, 11. connecting partition, 12. exhaust fan, 13. connecting bridge frame 2, 14. docking tube 2, 15. docking tube 1, 16. connecting bridge frame 1, 17. side rotating shaft, 18. pulley 1, 19. upper rotating shaft, 20. connecting bevel gear, 21. transmission bevel gear Wheel, 22, center axis, 23, pulley two, 24, pulley three, 25, cleaning shaft, 26, connecting plate, 27, cleaning splint, 28, transmission belt one, 29, transmission belt two, 30, placement groove, 31, connecting groove, 32, motor placement rack, 33, transmission motor, 34, driving shaft, 35, driving gear, 36, driven gear plate, 37, cleaning rotating groove, 38, cleaning brush, 39, docking hole, 40, transmission fan, 41, dust filter, 42, cleaning rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] like Figure 1 As shown, a crematorium exhaust gas purification treatment device comprises a ventilation chamber 1, the end surface of the ventilation chamber 1 is symmetrically penetrated with ventilation holes 2, one end of the ventilation chamber 1 is provided with a connecting chamber 3, the other end of the end surface of the ventilation chamber 1 is provided with a filter double-sided cleaning component 4, the filter double-sided cleaning component 4 and the ventilation chamber 1 are provided with a filter exchange component 5, one end of the filter double-sided cleaning component 4 is provided with a transmission chamber 6, the ventilation chamber 1 is provided with a connecting component 7, the connecting component 7 and the filter double-sided cleaning component 4 are arranged at intervals, the end surface of the transmission chamber 6 is provided with a filter cotton adsorption chamber 8, one end of the filter cotton adsorption chamber 8 is connected to an activated carbon adsorption chamber 9, and the end surface of the activated carbon adsorption chamber 9 is provided with an outlet pipe 10.

[0033] like Figure 1 , Figure 2 As shown, the connecting chamber 3 is a cylindrical structure with two ends open. A connecting partition 11 is provided in the middle of the connecting chamber 3. The connecting partition 11 divides the connecting chamber 3 into two parts. An exhaust fan 12 is provided on the connecting partition 11.

[0034] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Fig. 9As shown, the connecting component 7 includes a connecting bridge frame 2 13, a docking tube 2 14 and a docking tube 15. The docking tube 15 is arranged in a hollow cylindrical cavity with openings at both ends. The docking tube 15 is arranged at the vent hole 2 at the end of the ventilation cavity 1. The connecting bridge frame 2 13 is arranged in a U-shape. One end of the connecting bridge frame 2 13 is arranged on the outer side wall of the docking tube 15. The docking tube 2 14 is arranged in a hollow cylindrical cavity with openings at both ends. The docking tube 2 14 is arranged at the other end of the connecting bridge frame 2 13. The docking tube 15 and the docking tube 2 14 are aligned.

[0035] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Fig. 9 As shown, the filter double-sided cleaning assembly 4 includes a connecting bridge 16, a side rotating shaft 17, a pulley 18, an upper rotating shaft 19, a connecting bevel gear 20, a transmission bevel gear 21, a central shaft 22, a pulley 23, a pulley 3 24, a cleaning shaft 25, a connecting plate 26, a cleaning splint 27, a transmission belt 1 28 and a transmission belt 2 29, one end of the central shaft 22 is arranged at the end face center of the ventilation cavity 1, and the cleaning splints 27 are arranged in pairs, one of which is 27 is arranged on the end face of the ventilation cavity 1, the cleaning clamp 27 is arranged at intervals with the docking tube 15, the connection line of the two cleaning clamps 27 is arranged perpendicular to the connection line of the two docking tubes 15, the connecting bridge 16 is arranged in a U shape, one end of the connecting bridge 16 is arranged on the outer side wall of the docking tube 15, the other cleaning clamp 27 is arranged on the other end of the connecting bridge 16, the upper rotating shaft 19 is arranged on the inner bottom wall of the connecting bridge 16, and the connecting bevel gear 20 is arranged On the upper rotating shaft 19, the side rotating shaft 17 is symmetrically arranged on the two side walls of the connecting bridge frame 16, the transmission bevel gear 21 is arranged at one end of the side rotating shaft 17, the transmission bevel gear 21 is arranged in the connecting bridge frame 16, the pulley 23 is arranged at the other end of the side rotating shaft 17, the transmission bevel gear 21 is meshed with the connecting bevel gear 20, the outer side wall of the cleaning splint 27 is provided with a placement groove 30, the edge of the cleaning splint 27 is provided with a connecting groove 31, the cleaning shaft 25 It runs through the center of the cleaning splint 27, the pulley three 24 is arranged on the cleaning shaft 25, the pulley three 24 is arranged in the placement groove 30, the transmission belt one 28 is arranged on the pulley two 23 and the pulley three 24, the transmission belt one 28 is arranged in the placement groove 30 and the connecting groove 31, the pulley one 18 is arranged at the upper end of the cleaning shaft 25, the pulley one 18 is arranged on the central shaft 22, and the transmission belt two 29 is arranged on the two pulleys three 24 and the pulley one 18.

[0036] like Figure 1 , Figure 4 , Figure 5 , Figure 8 As shown, the filter exchange assembly 5 includes a motor rack 32, a transmission motor 33, a driving shaft 34, a driving gear 35 and a driven gear plate 36. The motor rack 32 is arranged on the outer wall of the ventilation chamber 1, and the driven gear plate 36 is rotatably arranged on the central axis 22. The driven gear plate 36 is arranged between the docking tube 1 15 and the docking tube 2 14. The driven gear plate 36 is arranged between two cleaning clamps 27. The driving shaft 34 is penetrated and arranged on the motor rack 32. The transmission motor 33 is arranged on the side wall of the motor rack 32. The transmission motor 33 is connected to one end of the driving shaft 34. The driving gear 35 is arranged at the other end of the driving shaft 34. The driving gear 35 is meshed with the driven gear plate 36. A dust filter 41 is arranged in an array on the driven gear plate 36.

[0037] like Figure 1 , Fig.11 As shown, the inner wall of the cleaning splint 27 is provided with a cleaning rotating groove 37, the connecting disk 26 is provided at the inner end of the cleaning shaft 25, the connecting disk 26 is provided in the cleaning rotating groove 37, the side wall array of the connecting disk 26 is provided with a cleaning rod 42, and the cleaning rod 42 is provided with a cleaning brush 38.

[0038] like Figure 1 , Fig.10 As shown, the transmission cavity 6 is arranged as a hollow cylindrical cavity with one end open, and the inner bottom wall of the transmission cavity 6 is symmetrically provided with docking holes 39, and the docking holes 39 are aligned with the docking tube 14.

[0039] like Figure 1 , Fig.10 As shown, the central shaft 22 passes through the bottom wall of the transmission cavity 6 , and a transmission fan 40 is provided at the end of the central shaft 22 , and the transmission fan 40 is disposed in the transmission cavity 6 .

[0040] When in use, the connecting chamber 3 is connected to the air outlet of the cremator, and the exhaust fan 12 is turned on. The exhaust fan 12 draws the gas in the cremator into the connecting chamber 3, and then enters the vent 2 of the ventilation chamber 1 through the connecting chamber 3, and enters the docking tube 1 15 through the vent 2, and then passes through the dust filter to filter the dust on the dust filter. The filtered gas enters the docking tube 2 14, and then passes through the docking tube 2 14 to enter the transmission chamber 6, and then enters the filter cotton adsorption chamber 8, and the dust is adsorbed and filtered again, and then enters the activated carbon adsorption chamber 9, completing the purification of the gas, and finally discharged from the outlet pipe 10;

[0041] When the gas enters the transmission chamber 6, the gas drives the transmission fan 40 to rotate, the transmission fan 40 drives the central shaft 22 to rotate, the central shaft 22 drives the pulley 18 to rotate, the pulley 18 drives the pulley 18 to rotate through the transmission belt 29, the pulley 18 drives the cleaning shaft 25 to rotate, the cleaning shaft 25 drives one of the connecting disks 26 to rotate, the connecting disk 26 drives the cleaning rod 42 to rotate, the cleaning brush 38 on the cleaning rod 42 cleans one side of the dust filter between the cleaning splints 27, the cleaning splint 27 can be provided with a dust outlet to discharge the dust in time, and at the same time the cleaning shaft 25 drives the pulley 3 24 to rotate, the pulley 3 24 drives the pulley 2 23 to rotate, and the belt Wheel two 23 drives the side rotating shaft 17 to rotate, the side rotating shaft 17 drives the transmission bevel gear 21 to rotate, the transmission bevel gear 21 drives the upper rotating shaft 19 to rotate, the upper rotating shaft 19 drives another transmission bevel gear 21 to rotate, the other transmission bevel gear 21 drives another side rotating shaft 17 to rotate, the side rotating shaft 17 drives pulley two 23 to rotate, pulley two 23 drives transmission wheel three to rotate, pulley three 24 drives the cleaning rotating shaft to rotate, the cleaning shaft 25 drives another connecting disk 26 to rotate, the connecting disk 26 drives the cleaning rod 42 to rotate, the cleaning brush 38 on the cleaning rod 42 cleans the other side of the dust filter between the cleaning splints 27, so both sides of the dust filter can be cleaned.

[0042] Although the embodiments of the utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the attached claims and their equivalents. In short, if those skilled in the art are inspired by them and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the scope of protection of the utility model.

Claims

1. A cremator tail gas purification device, comprising a ventilation chamber (1), characterized in that: The end surface of the ventilation chamber (1) is symmetrically provided with ventilation holes (2), one end of the ventilation chamber (1) is provided with a connecting chamber (3), the other end of the end surface of the ventilation chamber (1) is provided with a filter screen double-sided cleaning component (4), the filter screen double-sided cleaning component (4) and the ventilation chamber (1) are provided with a filter screen exchange component (5), one end of the filter screen double-sided cleaning component (4) is provided with a transmission chamber (6), the ventilation chamber (1) is provided with a connecting component (7), the connecting component (7) and the filter screen double-sided cleaning component (4) are arranged at intervals, the end surface of the transmission chamber (6) is provided with a filter cotton adsorption chamber (8), one end of the filter cotton adsorption chamber (8) is connected to an activated carbon adsorption chamber (9), and the end surface of the activated carbon adsorption chamber (9) is provided with an air outlet pipe (10).

2. The exhaust gas purification device for a cremator according to claim 1, characterized in that: The connecting chamber (3) is a cylindrical structure with openings at both ends. A connecting partition (11) is provided in the middle of the connecting chamber (3). The connecting partition (11) divides the connecting chamber (3) into two parts. An exhaust fan (12) is provided on the connecting partition (11).

3. The exhaust gas purification device for a cremator according to claim 2, characterized in that: The connecting component (7) comprises a second connecting bridge (13), a second docking tube (14) and a first docking tube (15); the first docking tube (15) is provided in the form of a hollow cylindrical cavity with openings at both ends; the first docking tube (15) is provided at the vent hole (2) at the end of the vent cavity (1); the second connecting bridge (13) is provided in a U-shape; one end of the second connecting bridge (13) is provided at the outer wall of the first docking tube (15); the second docking tube (14) is provided in the form of a hollow cylindrical cavity with openings at both ends; the second docking tube (14) is provided at the other end of the second connecting bridge (13); the first docking tube (15) and the second docking tube (14) are aligned.

4. The exhaust gas purification device for a cremator according to claim 3 is characterized in that: The filter screen double-sided cleaning assembly (4) comprises a connecting bridge frame 1 (16), a side rotating shaft (17), a pulley 1 (18), an upper rotating shaft (19), a connecting bevel gear (20), a transmission bevel gear (21), a central shaft (22), a pulley 2 (23), a pulley 3 (24), a cleaning shaft (25), a connecting disc (26), a cleaning clamping plate (27), a transmission belt 1 (28) and a transmission belt 2 (29), one end of the central shaft (22) is arranged at the end face center of the ventilation cavity (1), and the cleaning clamping plates (27) are arranged in pairs, one of the cleaning clamping plates being arranged at the center of the end face of the ventilation cavity (1). (27) is arranged on the end surface of the ventilation cavity (1), the cleaning clamp (27) is arranged at a distance from the docking tube (15), the connection line of the two cleaning clamps (27) is arranged perpendicular to the connection line of the two docking tubes (15), the connecting bridge (16) is arranged in a U shape, one end of the connecting bridge (16) is arranged on the outer side wall of the docking tube (15), and the other cleaning clamp (27) is arranged on the other end of the connecting bridge (16), the upper rotating shaft (19) is arranged on the inner bottom wall of the connecting bridge (16), and the connecting bevel gear (20) is arranged on the upper rotating shaft (19), the side rotating shaft (17) is symmetrically arranged on the two side walls of the connecting bridge frame (16), the transmission bevel gear (21) is arranged at one end of the side rotating shaft (17), the transmission bevel gear (21) is arranged in the connecting bridge frame (16), the pulley (23) is arranged at the other end of the side rotating shaft (17), the transmission bevel gear (21) is meshed with the connecting bevel gear (20), the outer side wall of the cleaning clamp (27) is provided with a placement groove (30), the edge of the cleaning clamp (27) is provided with a connecting groove (31), the cleaning shaft (25) is arranged on At the center of the cleaning splint (27), the pulley three (24) is arranged on the cleaning shaft (25), the pulley three (24) is arranged in the placement groove (30), the transmission belt one (28) is arranged on the pulley two (23) and the pulley three (24), the transmission belt one (28) is arranged in the placement groove (30) and the connecting groove (31), the pulley one (18) is arranged at the upper end of the cleaning shaft (25), the pulley one (18) is arranged on the central shaft (22), and the transmission belt two (29) is arranged on the two pulleys three (24) and the pulley one (18).

5. The exhaust gas purification device for a cremator according to claim 4, characterized in that: The filter screen exchange assembly (5) comprises a motor placement frame (32), a transmission motor (33), a driving shaft (34), a driving gear (35) and a driven gear plate (36), wherein the motor placement frame (32) is arranged on the outer wall of the ventilation chamber (1), the driven gear plate (36) is rotatably arranged on the central axis (22), the driven gear plate (36) is arranged between the first docking tube (15) and the second docking tube (14), and the driven gear plate (36) is arranged between the two cleaning The driving shaft (34) is arranged between the sweeping clamping plates (27), the driving shaft (34) is penetrated and arranged on the motor placement frame (32), the transmission motor (33) is arranged on the side wall of the motor placement frame (32), the transmission motor (33) is connected to one end of the driving shaft (34), the driving gear (35) is arranged at the other end of the driving shaft (34), the driving gear (35) is meshed with the driven gear plate (36), and the driven gear plate (36) is provided with a dust filter screen (41) in an array.

6. The exhaust gas purification device for a cremator according to claim 5, characterized in that: The inner wall of the cleaning clamping plate (27) is provided with a cleaning rotating groove (37), the connecting disk (26) is arranged at the inner end of the cleaning shaft (25), the connecting disk (26) is arranged in the cleaning rotating groove (37), the side wall array of the connecting disk (26) is provided with a cleaning rod (42), and the cleaning rod (42) is provided with a cleaning brush (38).

7. The exhaust gas purification device for a cremator according to claim 6, characterized in that: The transmission cavity (6) is provided in the form of a hollow cylindrical cavity with one end open. The inner bottom wall of the transmission cavity (6) is symmetrically provided with docking holes (39), and the docking holes (39) are aligned with the second docking tube (14).

8. The exhaust gas purification device for a cremator according to claim 7, characterized in that: The central shaft (22) passes through the bottom wall of the transmission chamber (6); a transmission fan (40) is provided at the end of the central shaft (22); and the transmission fan (40) is arranged in the transmission chamber (6).

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