Automatic air cylinder type ash removal device

Abstract

The invention discloses an automatic cylinder type ash removal device, which belongs to the technical field of flue ash removal, and comprises a flue and a fixed bracket, a push rod is arranged in the inner space of the fixed rod; a dredging mechanism is mounted at one end, close to the upper flue, of the push rod; an intelligent driving mechanism is installed at the top of the fixing rod, the output end of the intelligent driving mechanism is movably connected with the other end of the push rod, and a blocking static sealing assembly and a nitrogen charging dynamic sealing assembly are arranged on the two sides of the inner wall and the outer wall of the flange correspondingly. Through the mode, the intelligent driving mechanism controls the telescopic interval time of the push rod, so that the push rod dredges the communicating pipeline between the ash removal device and the combustion chamber through the dredging mechanism, pyrolysis airflow flows smoothly, and the overall negative pressure of the system is stabilized; through the cooperation of the dynamic sealing mode and the static sealing mode, the flange has good sealing performance, the upper flue is prevented from leaking powder or sucking air, volatile components leaked from the flue are collected by the ash collecting box and discharged from the ash outlet, and environmental pollution is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of flue dust cleaning, and in particular to an automatic cylinder type dust cleaning device. Background Art

[0002] The second combustion chamber is a cylindrical body vertical to the ground. Its main function is to further decompose the unburned volatiles in the rotary furnace at high temperature. At the same time, some liquid waste can also be sprayed into the furnace for incineration. In the process of coating and granulating new energy negative electrode materials, a large amount of volatiles are pyrolyzed to produce tar and pyrolysis gas, which enter the combustion chamber with the negative pressure of the system for combustion. Due to the low density of carbon powder, under negative pressure conditions, some fine particles and tar are easy to block the flue in the transition section between the equipment outlet and the combustion chamber. If the flue is blocked, the volatile matter in the granulator cannot be eliminated, which may affect the product quality at the least and cause the overall negative pressure of the system to be unstable due to the poor pyrolysis airflow at the worst, threatening the safety of the equipment to a certain extent.

[0003] The flue ash cleaning between the granulator and the secondary combustion chamber usually adopts the traditional regular manual ash cleaning method, which is not only inconvenient to operate and difficult to clean in time, but also has adverse effects on human health.

[0004] In order to facilitate dust cleaning and improve dust cleaning efficiency, the present invention provides an automatic cylinder type dust cleaning device.

[0005] Based on this, the present invention designs an automatic cylinder type dust cleaning device to solve the above problems. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides an automatic cylinder-type dust cleaning device.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: An automatic cylinder-type dust cleaning device comprises a flue and a fixing bracket; The flue is formed by welding an upper flue, a middle flue and a lower flue; The fixing bracket includes a fixing rod, a guide wheel and a flange. The fixing rod is fixedly mounted on the upper end of the upper flue through the flange. A plurality of guide wheels are arranged on the fixing rod along its length direction. A push rod is arranged in the inner space of the fixed rod, the push rod is connected to the guide wheel in a rolling manner, and the push rod passes through the guide wheel and the flange and then passes through the upper flue. A dredging mechanism for clearing the upper flue is installed at one end of the push rod close to the upper flue; an intelligent driving mechanism is installed on the top of the fixed rod, and the output end of the intelligent driving mechanism is movably connected to the other end of the push rod. The intelligent driving mechanism is used to control the extension and retraction of the push rod at intervals so that the dredging mechanism can clear the accumulation in the connecting pipe between the cleaning device and the combustion chamber; Sealing mechanisms are provided on both sides of the inner and outer walls of the flange, and the sealing mechanisms include a nitrogen-filling dynamic sealing assembly and a blocking static sealing assembly. The blocking static sealing assembly is arranged on the inner wall of the flange, and is used to cooperate with the retracted push rod to achieve static sealing of the upper flue; the nitrogen-filling dynamic sealing assembly is arranged on the outer wall of the flange, and is used to prevent the upper flue from inhaling air from the outside.

[0008] Furthermore, the fixed bracket is composed of a columnar frame and a plurality of channel steels, the ends of the columnar frame are fixedly connected to the upper flue through flanges; the channel steels are symmetrically fixedly installed on the front and rear sides of the columnar frame and distributed at both ends of the columnar frame; each channel steel is provided with a set of guide wheels, and each set of guide wheels is composed of guide wheels installed at both ends of the channel steel.

[0009] Furthermore, the intelligent driving mechanism includes a push cylinder, a first articulated seat, a second articulated seat, a fixed clamp and an automation controller, wherein the automation controller is movably mounted on a side of the column frame close to the flange through the first articulated seat; the shell of the push cylinder is fixedly connected to the automation controller, and the output end of the push cylinder is hinged to the push rod through the second articulated seat; the fixed clamp is fixedly mounted on a side of the column frame away from the flange, the push cylinder is located in the space enclosed by the fixed clamp and the column frame, and the shell of the push cylinder is fit-connected to the fixed clamp.

[0010] Furthermore, the unblocking mechanism includes a cleaning ring, ventilation holes and a conical block. The cleaning ring is fixedly installed on one end of the push rod for cleaning, and the outer edge of the cleaning ring is provided with a plurality of ventilation holes in a circular array at equal intervals; a conical block for clearing blockages is fixedly installed on the end of the cleaning ring away from the push rod.

[0011] Furthermore, an ash collecting box is arranged in the inner space of the fixed rod, the ash collecting box is fixedly connected to the outer wall of the flange, and an ash outlet is arranged at the bottom of the outer wall of the ash collecting box.

[0012] Furthermore, the nitrogen-filled dynamic seal assembly includes a graphite packing seal and a nitrogen seal, and the graphite packing seal and the nitrogen seal are arranged on the inner side of the ash collecting box.

[0013] Furthermore, the nitrogen seal includes a fixing frame, a cover plate, a nitrogen chamber, an air inlet and an air blowing groove, the fixing frame is located on the inner side of the ash collecting box, one end of the fixing frame is fixedly connected to the outer wall of the flange, and the other end of the fixing frame is fixedly installed with a cover plate, the nitrogen chamber is arranged on the outer side of the fixing frame, and an air blowing groove for communication is provided between the nitrogen chamber and the fixing frame; the ash collecting box and the nitrogen chamber are provided at corresponding positions thereof; the nitrogen enters the nitrogen chamber from the ash collecting box through the air inlet, and enters the joint between the flange and the push rod through the air blowing groove to realize the nitrogen seal.

[0014] Furthermore, the plugging static sealing component includes a castable, a graphite packing three and a sealing pressure plate. The inner wall of the flange is provided with a castable, a groove is opened on the castable, and a graphite packing three is embedded in the groove; a sealing pressure plate matching the graphite packing three is fixedly installed on one end of the cleaning ring close to the push rod.

[0015] Furthermore, a first inspection hole is provided on the upper flue, and a second inspection hole is provided on the middle flue.

[0016] Furthermore, the materials of the flue and push rod are set to high temperature resistant AISI310S or S30815.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The intelligent driving mechanism controls the extension and retraction interval time of the push rod, so that the push rod moves within the fixed rod along the guide wheel within the fixed rod, and foreign objects such as petroleum coke and carbon powder are pushed into the combustion chamber for combustion through the unblocking mechanism at the end of the push rod, so that the pyrolysis gas flow flows smoothly and the overall negative pressure of the system is stabilized, thereby ensuring product quality and reducing safety risks; and a flange connection is adopted between the device and the flue, which is easy to assemble, disassemble and clean.

[0018] 2. When the push rod shrinks the top of the upper flue, it will cooperate with the static sealing component to form a static seal in the upper flue, and the nitrogen-filling dynamic sealing component will always fill nitrogen into the joint between the push rod and the flange to form a dynamic seal. Therefore, through the cooperation of dynamic sealing and static sealing, the flange has good sealing performance to prevent powder leakage or air inhalation in the upper flue, and the volatile matter leaked from the flue is collected by the ash collecting box and discharged from the ash outlet, effectively reducing environmental pollution.

[0019] 3. The automation controller drives the push rod to achieve limited movement on the guide wheel through the push cylinder to prevent the push rod from offsetting during movement. The first articulated seat and the second articulated seat cooperate to allow the push cylinder to have a certain amount of activity to overcome the deformation error of the device structure during manufacturing and installation, thereby effectively preventing the cylinder rod and the push rod from deformation and ensuring the smooth operation of the equipment.

[0020] 4. The parts that come into contact with the flue gas are made of high temperature resistant materials, so that the equipment can operate for a long time under high temperature conditions and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a front view of an automatic cylinder type dust cleaning device of the present invention; Figure 2 A three-dimensional diagram of an automatic cylinder-type dust cleaning device of the present invention; Figure 3 for Figure 1 Forward half section view of Figure 4 for Figure 3 The enlarged view of point A in the middle; Figure 5 It is a schematic diagram of the structure of the nitrogen-filled dynamic seal assembly.

[0023] Figure 6 A three-dimensional view of the automated cylinder-type cleaning device behind the hidden flue.

[0024] The numbers in the figure represent: 1. Flue; 11. Upper flue; 12. Middle flue; 13. Lower flue; 14. First inspection hole; 15. Second inspection hole; 2. Fixed bracket; 21. Column frame; 22. Channel steel; 23. Guide wheel; 24. Flange; 3. Intelligent drive mechanism; 31. Push cylinder; 32. First hinge seat; 33. Second hinge seat; 34. Fixed clamp; 35. Automatic controller; 4. Dredging mechanism; 41. Cleaning ring; 42 , ventilation hole; 43, conical block; 5, sealing mechanism; 51, nitrogen-filled dynamic sealing assembly; 511, fixing frame; 512, cover plate; 513, graphite packing one; 514, graphite packing two; 515, nitrogen chamber; 516, air inlet hole; 517, air blowing slot; 52, plugging static sealing assembly; 521, casting material; 522, graphite packing three; 523, sealing pressure plate; 6, push rod; 7, ash collecting box; 8, ash outlet. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0027] Embodiment 1: In some embodiments, please refer to the drawings of the specification Figure 1-Figure 6 , an automatic cylinder type dust cleaning device, comprising a flue 1 and a fixing bracket 2; The flue 1 is formed by welding an upper flue 11, a middle flue 12 and a lower flue 13; a first inspection hole 14 is provided on the upper flue 11, and a second inspection hole 15 is provided on the middle flue 12; maintenance personnel can clearly observe the internal conditions of the flue 1 through the first inspection hole 14 and the second inspection hole 15 and find problems in time, which is convenient for inspection and maintenance of the flue 1; The fixing bracket 2 includes a fixing rod, a guide wheel 23 and a flange 24. The fixing rod is fixedly mounted on the upper end of the upper flue 11 through the flange 24. A plurality of guide wheels 23 are arranged on the fixing rod along its length direction. A push rod 6 is arranged in the inner space of the fixed rod. The push rod 6 adopts a square tube structure. The push rod 6 is rollingly connected with the guide wheel 23, and the push rod 6 passes through the upper flue 11 after passing between the guide wheels 23 and the flange 24. The end of the push rod 6 close to the upper flue 11 is equipped with a dredging mechanism 4 for clearing the upper flue 11; the top of the fixed rod is equipped with an intelligent driving mechanism 3, the output end of the intelligent driving mechanism 3 is movably connected to the other end of the push rod 6, and the intelligent driving mechanism 3 is used to control the extension and retraction of the push rod 6 at intervals so that the dredging mechanism 4 can perform dredging operations; An ash collecting box 7 is arranged in the inner space of the fixed rod, and the ash collecting box 7 is fixedly connected to the outer wall of the flange 24, and an ash outlet 8 is arranged at the bottom of the outer wall of the ash collecting box 7; Sealing mechanisms 5 are provided on both sides of the inner and outer walls of the flange 24, and the sealing mechanism 5 includes a nitrogen-filling dynamic sealing component 51 and a blocking static sealing component 52. The blocking static sealing component 52 is arranged on the inner wall of the flange 24, and the blocking static sealing component 52 is used to cooperate with the retracted push rod 6 to achieve static sealing of the upper flue 11; the nitrogen-filling dynamic sealing component 51 is arranged on the outer wall of the flange 24, and the nitrogen-filling dynamic sealing component 51 is used to prevent the upper flue 11 from inhaling air from the outside.

[0028] In the present invention, the intelligent driving mechanism 3 controls the extension and retraction interval time of the push rod 6, so that the push rod 6 moves within the fixed rod along the guide wheel 23 within the fixed rod, and the accumulation in the connecting pipe (transition section flue) between the ash cleaning device and the combustion chamber is cleared by the clearing mechanism 4 at the end of the push rod 6, so that the pyrolysis gas flow flows smoothly, and the overall negative pressure of the system is stabilized, thereby ensuring product quality and reducing safety risks; When the push rod 6 shrinks the top of the upper flue 11, it will cooperate with the sealing static sealing component 52 to form a static seal in the upper flue 11, and the nitrogen-filled dynamic sealing component 51 always fills nitrogen into the joint between the push rod 6 and the flange 24 to form a dynamic seal. Therefore, through the cooperation of the dynamic sealing and static sealing methods, the flange 24 has good sealing performance, preventing the upper flue 11 from leaking powder or inhaling air, and the volatile matter leaked from the flue is collected by the ash collecting box 7 and discharged from the ash outlet 8.

[0029] The fixed bracket is composed of a column frame 21 and a plurality of channel steels 22. The ends of the column frame 21 are fixedly connected to the upper flue 11 through flanges 24. The channel steels 22 are symmetrically fixedly installed on the front and rear sides of the column frame 21 and distributed at both ends of the column frame 21. Each channel steel 22 is provided with a set of guide wheels 23. Each set of guide wheels 23 is composed of guide wheels 23 installed at both ends of the channel steel 22, so that the push rod 6 of the square tube structure can achieve limited movement through the guide wheels 23 to prevent the push rod 6 from deviating during movement. The intelligent driving mechanism 3 includes a push cylinder 31, a first hinge seat 32, a second hinge seat 33, a fixed clamp 34 and an automatic controller 35. The push cylinder 31 adopts a servo electric push cylinder. The automatic controller 35 is movably installed on the side of the column frame 21 close to the flange 24 through the first hinge seat 32; the shell of the push cylinder 31 is fixedly connected to the automatic controller 35, and the output end of the push cylinder 31 is hinged to the push rod 6 through the second hinge seat 33; the fixed clamp 34 is fixedly installed on the side of the column frame 21 away from the flange 24, the push cylinder 31 is located in the space enclosed by the fixed clamp 34 and the column frame 21, and the shell of the push cylinder 31 is fitted and connected to the fixed clamp 34; In the present invention, the activity of the output end of the push cylinder 31 is controlled by the automation controller 35 to drive the extension and retraction of the push rod 6. The push cylinder 31 has a certain amount of activity through the first articulated seat 32 and the second articulated seat 33 to overcome the deformation error of the structure of the device during manufacturing and installation, thereby effectively preventing the cylinder rod and the push rod from deformation and ensuring the smooth operation of the equipment.

[0030] The dredging mechanism 4 includes a cleaning ring 41, ventilation holes 42 and a conical block 43. The cleaning ring 41 is fixedly mounted on one end of the push rod 6 for cleaning, and a plurality of ventilation holes 42 are provided at equal intervals in a circular array on the outer edge of the cleaning ring 41; a conical block 43 is fixedly mounted on one end of the cleaning ring 41 away from the push rod 6, and the conical block 43 is used to push foreign matter such as petroleum coke and carbon powder accumulated in the transition section flue into the combustion chamber for combustion; Embodiment 2: In some embodiments, Figure 3 , Figure 4 and Figure 5As shown, as a preferred embodiment of the present invention, the nitrogen-filled dynamic seal assembly 51 includes a fixing frame 511, a cover plate 512, a graphite packing 1 513, a graphite packing 2 514, a nitrogen chamber 515, an air inlet 516 and an air blowing groove 517. The fixing frame 511 is located on the inner side of the ash collecting box 7, one end of the fixing frame 511 is fixedly connected to the outer wall of the flange 24, and the other end of the fixing frame 511 is fixedly installed with a cover plate 512. The graphite packing 1 513 and the graphite packing 2 514 are fixedly connected to the inner wall of the fixing frame 511 and are sealed by the cover plate 512. The inner sides of the graphite packing 1 513 and the graphite packing 2 514 are in contact with the push rod 6. The provision of two graphite packings can effectively improve the guarantee of sealing performance, and the two graphite packings can compensate each other after being worn. The nitrogen chamber 515 is arranged on the outside of the fixing frame 511, and an air blowing groove 517 for communication is provided between the nitrogen chamber 515 and the fixing frame 511; an air inlet 516 is provided at the corresponding position of the ash collecting box 7 and the nitrogen chamber 515; the nitrogen enters the nitrogen chamber 515 from the ash collecting box 7 through the air inlet 516, and enters the joint between the flange 24 and the push rod 6 through the air blowing groove 517 to achieve nitrogen sealing, thereby preventing the upper flue 11 from inhaling air from the outside, and the volatile matter leaking from the flue is collected by the ash collecting box 7 and discharged from the ash outlet 8.

[0031] The plugging static sealing assembly 52 includes a casting material 521, a graphite packing 522 and a sealing pressure plate 523. The inner wall of the flange 24 is provided with the casting material 521, and a groove is formed on the casting material 521, and the graphite packing 522 is embedded in the groove; the sealing pressure plate 523 matching the graphite packing 522 is fixedly installed at one end of the cleaning ring 41 close to the push rod 6; when the push rod 6 retracts, the sealing pressure plate 523 and the graphite packing 522 are abutted against each other to form a static seal against the upper flue 11; Embodiment 3: In some embodiments, as a preferred embodiment of the present invention, the material of the flue 1 and the push rod 6 are set to high-temperature resistant AISI310S or S30815, which effectively improves the high-temperature resistance of the part of the cleaning device in contact with the flue gas. The device can operate for a long time under high-temperature conditions and has a long service life.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automated cylinder-type dust cleaning device, comprising a flue (1) and a fixing bracket (2), characterized in that: The flue (1) is formed by welding an upper flue (11), a middle flue (12) and a lower flue (13); The fixed bracket (2) comprises a fixed rod, a guide wheel (23) and a flange (24); the fixed rod is fixedly mounted on the upper end of the upper flue (11) via the flange (24); and a plurality of guide wheels (23) are arranged on the fixed rod along its length direction; A push rod (6) is disposed in the inner space of the fixed rod. The push rod (6) is rollingly connected to the guide wheel (23), and the push rod (6) passes through the guide wheel (23) and the flange (24) and then passes through the upper flue (11). A dredging mechanism (4) for clearing blockage of the upper flue (11) is installed at one end of the push rod (6) close to the upper flue (11); an intelligent driving mechanism (3) is installed at the top of the fixed rod, the output end of the intelligent driving mechanism (3) is movably connected to the other end of the push rod (6), and the intelligent driving mechanism (3) is used to control the extension and retraction of the push rod (6) at intervals so that the dredging mechanism (4) can clear the accumulation in the communicating pipe between the cleaning device and the combustion chamber; Sealing mechanisms (5) are provided on both sides of the inner and outer walls of the flange (24). The sealing mechanism (5) comprises a nitrogen-filling dynamic sealing component (51) and a blocking static sealing component (52). The blocking static sealing component (52) is arranged on the inner wall of the flange (24). The blocking static sealing component (52) is used to cooperate with the retracted push rod (6) to achieve static sealing of the upper flue (11). The nitrogen-filling dynamic sealing component (51) is arranged on the outer wall of the flange (24). The nitrogen-filling dynamic sealing component (51) is used to prevent the upper flue (11) from inhaling air from the outside.

2. The automatic cylinder type dust cleaning device according to claim 1 is characterized in that: The fixed bracket is composed of a column frame (21) and a plurality of channel steels (22); the end of the column frame (21) is fixedly connected to the upper flue (11) via a flange (24); the channel steels (22) are symmetrically fixedly mounted on the front and rear sides of the column frame (21) and distributed at both ends of the column frame (21); each channel steel (22) is provided with a group of guide wheels (23), and each group of guide wheels (23) is composed of guide wheels (23) mounted on both ends of the channel steel (22).

3. The automatic cylinder type dust cleaning device according to claim 2 is characterized in that: The intelligent driving mechanism (3) comprises a push cylinder (31), a first hinge seat (32), a second hinge seat (33), a fixed clamp (34) and an automatic controller (35), wherein the automatic controller (35) is movably mounted on a side of the column frame (21) close to the flange (24) via the first hinge seat (32); the shell of the push cylinder (31) is fixedly connected to the automatic controller (35), and the output end of the push cylinder (31) is hinged to the push rod (6) via the second hinge seat (33); the fixed clamp (34) is fixedly mounted on a side of the column frame (21) away from the flange (24), the push cylinder (31) is located in a space enclosed by the fixed clamp (34) and the column frame (21), and the shell of the push cylinder (31) is fittedly connected to the fixed clamp (34).

4. The automatic cylinder type dust cleaning device according to claim 3 is characterized in that: The dredging mechanism (4) comprises a cleaning ring (41), ventilation holes (42) and a conical block (43); the cleaning ring (41) is fixedly mounted on one end of the push rod (6) for cleaning, and a plurality of ventilation holes (42) are formed in a circular array at equal intervals on the outer edge of the cleaning ring (41); and a conical block (43) for clearing blockage is fixedly mounted on one end of the cleaning ring (41) away from the push rod (6).

5. The automatic cylinder type dust cleaning device according to claim 4 is characterized in that: An ash collecting box (7) is arranged in the inner space of the fixed rod. The ash collecting box (7) is fixedly connected to the outer wall of the flange (24). An ash outlet (8) is arranged at the bottom of the outer wall of the ash collecting box (7).

6. The automatic cylinder type dust cleaning device according to claim 5, characterized in that: The nitrogen-filled dynamic seal assembly (51) comprises a graphite packing seal and a nitrogen seal, and the graphite packing seal and the nitrogen seal are arranged on the inner side of the ash collecting box (7).

7. The automatic cylinder type dust cleaning device according to claim 6, characterized in that: The nitrogen seal comprises a fixing frame (511), a cover plate (512), a nitrogen chamber (515), an air inlet hole (516) and an air blowing slot (517); the fixing frame (511) is located on the inner side of the ash collecting box (7); one end of the fixing frame (511) is fixedly connected to the outer wall of the flange (24); the other end of the fixing frame (511) is fixedly mounted with the cover plate (512); the nitrogen chamber (515) is arranged on the outer side of the fixing frame (511); an air blowing slot (517) for communication is provided between the nitrogen chamber (515) and the fixing frame (511); the ash collecting box (7) and the nitrogen chamber (515) are provided at corresponding positions; the nitrogen enters the nitrogen chamber (515) from the ash collecting box (7) through the air inlet hole (516), and enters the joint between the flange (24) and the push rod (6) through the air blowing slot (517) to achieve nitrogen sealing.

8. The automatic cylinder type dust cleaning device according to claim 7, characterized in that: The plugging static sealing component (52) comprises a casting material (521), a graphite packing three (522) and a sealing pressure plate (523); the casting material (521) is provided on the inner wall of the flange (24); a groove is provided on the casting material (521), and the graphite packing three (522) is embedded in the groove; and a sealing pressure plate (523) matching the graphite packing three (522) is fixedly installed on one end of the cleaning ring (41) close to the push rod (6).

9. The automatic cylinder type dust cleaning device according to claim 8, characterized in that: The upper flue (11) is provided with a first inspection hole (14), and the middle flue (12) is provided with a second inspection hole (15).

10. The automatic cylinder type dust cleaning device according to claim 8, characterized in that: The flue (1) and the push rod (6) are both made of high temperature resistant AISI310S or S30815.

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