Environment-friendly filtering device for ferrosilicon processing and production

Abstract

This invention provides an environmentally friendly filtration device for ferrosilicon processing, comprising a chassis, a cooling assembly, and a filter assembly. Belonging to the field of environmental filtration technology, this invention allows ferrosilicon debris to be trapped on the filter screen as flue gas flows through it. Multiple filter screens form a multi-stage filtration structure, effectively filtering solid impurities in the flue gas. Simultaneously, the brushes on the baffle plate contact the filter screen, automatically sweeping away the trapped solid debris as the screen rotates. The swept-off debris automatically falls into a collection box for recycling and storage. Users can obtain the recycled ferrosilicon debris by disassembling the sealed cover, achieving the recycling and reuse of ferrosilicon resources. The rotational speed of the rotating rod is reduced by a planetary reducer, preventing the filter screen from rotating too fast and affecting the flue gas filtration effect.

Description

Technical Field

[0001] This invention belongs to the field of environmental filtration technology, specifically referring to an environmental filtration device for ferrosilicon processing. Background Technology

[0002] During the ferrosilicon processing and production process, a large amount of dust containing ferrosilicon waste is generated. This dust not only pollutes the environment but also affects the health of workers. Therefore, environmental protection filtration devices have become an indispensable piece of equipment in ferrosilicon processing and production.

[0003] However, existing environmentally friendly filtration devices for ferrosilicon processing still have many problems: On the one hand, existing devices lack automatic cleaning functions. After prolonged use, a large amount of ferrosilicon waste and dust adheres to the surface of the filter media, leading to increased filtration resistance and a significant reduction in filtration efficiency, requiring frequent manual cleaning. This not only increases labor costs but also poses certain safety hazards and can easily cause secondary pollution during the cleaning process. On the other hand, existing devices cannot automatically recover the waste generated during ferrosilicon processing. Ferrosilicon waste has certain recycling value, and manual processing is difficult to achieve efficient recycling, resulting in resource waste. Therefore, it is urgent to design an environmentally friendly filtration device that combines automatic cleaning and automatic ferrosilicon waste recovery functions to meet the environmental protection requirements and resource utilization needs of ferrosilicon processing. Summary of the Invention

[0004] To address the aforementioned problems and overcome the shortcomings of existing technologies, this invention provides an environmentally friendly filtration device for ferrosilicon processing. This device not only has an automatic cleaning function but also effectively recycles waste generated during ferrosilicon processing, thus effectively solving the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An environmentally friendly filtration device for ferrosilicon processing includes a chassis body. A pair of lifting electric actuators are provided on the upper wall of the chassis body. The output end of one lifting electric actuator is connected to a filter assembly, and the output end of the other lifting electric actuator is connected to a support cover. A cooling assembly is provided inside the support cover. One end of the cooling assembly is connected to the filter assembly, and the other end of the cooling assembly is connected to an absorption port. A sealing sleeve is provided along the outer edge of the absorption port. The filter assembly includes a filter cylinder, an exhaust pipe, a rotating rod, a filter screen, and an adsorption assembly. The filter cartridge is fixed to the output end of the lifting electric actuator. The exhaust pipe is connected through to the end of the filter cartridge away from the cooling component. The rotating rod rotates at the internal center of the filter cartridge. The filter screen is arranged in an array along the length of the rotating rod. The adsorption component is located on the side wall of the end of the rotating rod away from the cooling component. A collection box is arranged through the lower internal wall of the filter cartridge along the length of the rotating rod. A partition is fixed to the upper edge of the collection box. The partitions are respectively located on the side of the filter screen near the cooling component. A dust-sweeping brush is provided on the edge of the partition near the filter screen. The dust-sweeping brush is in contact with the filter screen.

[0006] Furthermore, the edge of the filter screen is in contact with the inner wall of the filter cylinder. The adsorption assembly includes insert rods and adsorption blocks. The insert rods are fixed in a ring array to the side wall of the rotating rod. The adsorption blocks are arranged in a ring array on the outside of the rotating rod. The adsorption blocks have insertion holes at the ends near the rotating rod. The insert rods are movably inserted into the insertion holes. The ends of the adsorption blocks away from the rotating rod are fixed with synchronous bevel gears. The inner wall of the filter cylinder is fixed with synchronous helical gear rings along the circumferential direction. The synchronous bevel gears mesh with the synchronous helical gear rings.

[0007] Furthermore, a planetary reducer is provided at the end of the rotating rod away from the cooling component. The end of the rotating rod is connected to the output end of the planetary reducer. A drive rod is connected to the input end of the planetary reducer. An exhaust fan is fixed in a ring array on the side wall of the end of the drive rod away from the planetary reducer. The exhaust fan is rotatably disposed inside the exhaust pipe. A motor frame is fixed inside the exhaust pipe. A drive motor is fixed at the center of the motor frame. The output end of the drive motor is connected to the end of the drive rod.

[0008] Furthermore, the cooling component includes an air guide pipe and a cooling sleeve. The air guide pipe is located inside the support cover and is spiral-shaped. The absorption port is located at one end of the air guide pipe, and the other end of the air guide pipe is connected to the filter cartridge. The cooling sleeve covers the outer surface of the air guide pipe and has a cooling chamber inside. Both ends of the cooling sleeve are connected to circulation pipes, which are connected to the cooling chambers. A cooling water tank is fixed in the middle of the upper wall of the chassis body, and the circulation pipes are connected to the cooling water tanks. A water pump is installed at the connection between one of the circulation pipes and the cooling water tank.

[0009] Furthermore, the side wall of the filter cartridge is provided with an inspection port, and a sealing shell is movably engaged on the inspection port. The lower end of the collection box is provided with a discharge port, and a sealing cover is movably engaged on the discharge port.

[0010] Furthermore, support rods are fixed to the left and right side walls of the chassis body, handrails are fixed to the upper ends of the support rods, control panels are fixed to the handrails, and casters are provided at the bottom of the chassis body.

[0011] Furthermore, the control panel has a built-in controller. The control panel, lifting electric actuator, water pump, and drive motor are all electrically connected to the controller.

[0012] Furthermore, the adsorption block is made of activated carbon material, and the sealing sleeve is made of high-temperature resistant rubber material.

[0013] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The sealing sleeve can be fitted onto the exhaust port of the ferrosilicon processing production device. The sealing sleeve is made of high temperature resistant rubber material and can be adapted to exhaust ports of different sizes. The drive motor drives the exhaust fan to rotate, so that the airflow flows from the absorption port to the exhaust pipe. The flue gas with ferrosilicon fragments passes through the cooling effect of the cooling component and the filtering effect of the filter component, thereby achieving the automatic cleaning effect of the flue gas. (2) The flue gas generated during the ferrosilicon processing is at a high temperature. When the flue gas flows through the gas guide pipe, the water pump can draw water from the cooling water tank into the circulation pipe and then flow through the cooling chamber of the cooling sleeve. The water in the cooling chamber can carry away the heat generated when the high temperature flue gas flows through the gas guide pipe, and the water flows back to the cooling water tank through the circulation pipe. The cooling of the gas guide pipe is achieved through water circulation, thereby reducing the flue gas temperature and avoiding harm to the human body when the high temperature flue gas is discharged. (3) The cooled flue gas enters the filter cylinder through the air guide pipe. The drive motor can drive the drive rod to rotate. The drive rod drives the rotating rod to rotate through the planetary reducer. The rotating rod drives multiple filter screens to rotate. When the flue gas flows through the filter screen, the ferrosilicon debris will be trapped on the filter screen. Multiple filter screens form a multi-stage filtration structure, which can effectively filter solid impurities in the flue gas. At the same time, since the ash sweeping brush on the partition plate is in contact with the filter screen, when the filter screen rotates, the ash sweeping brush can automatically sweep off the solid debris trapped on the filter screen. The swept solid debris will automatically fall into the collection box for recycling and storage. Users can obtain the recycled ferrosilicon debris by disassembling the closed cover, realizing the recycling and reuse of ferrosilicon resources. The rotation speed of the rotating rod is reduced by the deceleration effect of the planetary reducer to avoid the filter screen rotation speed being too fast and affecting the flue gas filtration effect. (4) When the rotating rod rotates, the adsorption block rotates accordingly. At the same time, due to the meshing relationship between the synchronous bevel gear and the synchronous helical gear ring, the synchronous bevel gear will rotate under the limitation of the synchronous helical gear ring, thereby driving the adsorption block to rotate. When the flue gas flows through the adsorption assembly, the adsorption block can further adsorb and remove the tiny harmful substances in the flue gas that have not been removed by the filter screen. The adsorption block rotates while revolving with the rotating rod, so that the entire surface of the adsorption block can contact the flue gas, thereby improving the adsorption efficiency of the adsorption block and enhancing the cleaning effect. The adsorption block can be removed from the insertion rod for easy replacement. Attached Figure Description

[0014] Figure 1 A schematic diagram of an environmentally friendly filtration device for ferrosilicon processing provided by the present invention; Figure 2 This is a schematic diagram of the first internal structure of the filter assembly; Figure 3 This is a schematic diagram of the second internal structure of the filter component; Figure 4 A schematic diagram showing the connection structure of the rotating rod, filter screen, adsorption assembly, planetary reducer, drive rod, exhaust fan and drive motor; Figure 5 A schematic diagram of the connection structure of the adsorption block, rotating rod, synchronous bevel gear and synchronous helical gear ring; Figure 6 This is a cross-sectional view of the filter assembly. Figure 7 This is a cross-sectional view of the filter component; Figure 8 A schematic diagram showing the connection structure between the cooling components and the cooling water tank; Figure 9 This is a schematic diagram of the connection structure between the air duct and the cooling sleeve. Figure 10 This is a cross-sectional view of the gas duct and the cooling sleeve; Figure 11 This is a schematic diagram of the connection structure between the adsorption block and the insertion rod.

[0015] The components include: 1. Underframe body; 11. Support rod; 111. Handrail; 112. Control panel; 12. Casters; 13. Cooling water tank; 14. Lifting electric push rod; 141. Support cover; 2. Cooling assembly; 21. Air duct; 22. Cooling sleeve; 221. Cooling chamber; 23. Circulation pipe; 231. Water pump; 3. Absorption port; 31. Sealing sleeve; 4. Filter assembly; 41. Filter cartridge; 411. Inspection port; 412. Sealing shell. 413. Collection box; 4131. Discharge port; 4132. Sealing cover; 414. Partition; 4141. Dust sweeping brush; 415. Synchronous helical gear ring; 42. Exhaust pipe; 421. Motor frame; 43. Rotating rod; 44. Filter screen; 45. Adsorption assembly; 451. Insert rod; 452. Adsorption block; 4521. Insertion hole; 4522. Synchronous bevel gear; 46. Planetary reducer; 47. Drive rod; 48. Exhaust fan; 49. Drive motor. Detailed Implementation

[0016] The technical solution of the present invention will be further described in detail below with reference to specific implementations. The parts of the technical features or connection relationships described in the present invention that are not described in detail are all existing technologies.

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] like Figures 1-11 As shown, the present invention provides an environmentally friendly filtration device for ferrosilicon processing, comprising a chassis body 1, a cooling component 2, and a filter component 4. The upper wall of the chassis body 1 is provided with a pair of lifting electric push rods 14. The filter component 4 is connected to the output end of one of the lifting electric push rods 14, and the output end of the other lifting electric push rod 14 is connected to a support cover 141. The cooling component 2 is disposed inside the support cover 141. One end of the cooling component 2 is connected to the filter component 4, and the other end of the cooling component 2 is connected to an absorption port 3. The outer edge of the absorption port 3 is provided with a sealing sleeve 31, which is made of high-temperature resistant rubber.

[0019] Support rods 11 are fixed to the left and right side walls of the chassis body 1, and handrails 111 are fixed to the upper end of the support rods 11. A control panel 112 is fixed on the handrails 111. A moving wheel 12 is provided under the chassis body 1. The control panel 112 has a built-in controller. The control panel 112, the lifting electric push rod 14, the water pump 231 and the drive motor 49 are electrically connected to the controller.

[0020] The cooling component 2 includes an air duct 21 and a cooling sleeve 22. The air duct 21 is located inside the support cover 141 and is spiral in shape. The absorption port 3 is located through one end of the air duct 21, and the other end of the air duct 21 is connected through to the filter component 4. The cooling sleeve 22 covers the outer surface of the air duct 21 and has a cooling chamber 221 inside. Both ends of the cooling sleeve 22 are connected to circulation pipes 23, which are connected through to the cooling chamber 221. A cooling water tank 13 is fixed in the middle of the upper wall of the chassis body 1. The circulation pipes 23 are connected through to the cooling water tank 13. A water pump 231 is provided at the connection between one of the circulation pipes 23 and the cooling water tank 13.

[0021] The filter assembly 4 includes a filter cylinder 41, an exhaust pipe 42, a rotating rod 43, a filter screen 44, and an adsorption assembly 45. The filter cylinder 41 is fixed to the output end of the lifting electric push rod 14 and is connected to the air guide pipe 21. The exhaust pipe 42 is connected to the end of the filter cylinder 41 away from the cooling assembly 2. The rotating rod 43 rotates at the internal center of the filter cylinder 41. The filter screen 44 is arranged in an array on the rotating rod 43 along the length direction of the rotating rod 43. The adsorption assembly 45 is located on the side wall of the end of the rotating rod 43 away from the cooling assembly 2. The lower inner wall of the filter cylinder 41 is provided with a collection box 413 arranged in an array along the length direction of the rotating rod 43. A partition 414 is fixed to the upper edge of the collection box 413. The partitions 414 are respectively located on the side of the filter screen 44 close to the cooling assembly 2. A dust removal brush 4141 is provided on the edge of the partition 414 close to the filter screen 44. The dust removal brush 4141 is in contact with the filter screen 44. The filter cartridge 41 has an inspection port 411 on its side wall, and a sealing shell 412 is movably locked onto the inspection port 411. The collection box 413 has a discharge port 4131 at its lower end, and a sealing cover 4132 is movably locked onto the discharge port 4131.

[0022] The edge of the filter screen 44 is in contact with the inner wall of the filter cylinder 41. The adsorption assembly 45 includes insert rods 451 and adsorption blocks 452. The insert rods 451 are fixed in a ring array to the side wall of the rotating rod 43. The adsorption blocks 452 are arranged in a ring array on the outside of the rotating rod 43. The adsorption blocks 452 are made of activated carbon material. The end of the adsorption block 452 near the rotating rod 43 has an insertion hole 4521. The insert rods 451 are movably inserted into the insertion hole 4521. The end of the adsorption block 452 away from the rotating rod 43 is fixed with a synchronous bevel gear 4522. The inner wall of the filter cylinder 41 is fixed with a synchronous helical gear ring 415 along the circumferential direction. The synchronous bevel gear 4522 meshes with the synchronous helical gear ring 415.

[0023] A planetary reducer 46 is provided at the end of the rotating rod 43 away from the cooling component 2. The end of the rotating rod 43 is connected to the output end of the planetary reducer 46. A drive rod 47 is connected to the input end of the planetary reducer 46. An exhaust fan 48 is fixed in a ring array on the side wall of the end of the drive rod 47 away from the planetary reducer 46. The exhaust fan 48 is rotatably disposed inside the exhaust pipe 42. A motor frame 421 is fixed inside the exhaust pipe 42. A drive motor 49 is fixed at the center of the motor frame 421. The output end of the drive motor 49 is connected to the end of the drive rod 47.

[0024] Working principle and workflow: The user moves the device to the vicinity of the ferrosilicon processing equipment that needs filtration, and starts the device by adjusting the lifting electric actuator 14 through the control panel 112. The lifting electric actuator 14 drives the filter assembly 4 and the cooling assembly 2 to rise and fall, moving the absorption port 3 to a position close to the exhaust port of the ferrosilicon processing equipment. The sealing sleeve 31 is then placed on the exhaust port of the ferrosilicon processing equipment. The sealing sleeve 31 is made of high-temperature resistant rubber and can be used for exhaust ports of different sizes. At this time, the user starts the flue gas filtration process through the control panel 112, and the drive motor 49 starts. The drive motor 49 drives the exhaust fan 48 to rotate, so that the airflow flows from the absorption port 3 to the exhaust stack 42. The flue gas containing ferrosilicon debris is cooled by the cooling assembly 2 and filtered by the filter assembly 4, thereby achieving an automatic cleaning effect for the flue gas. The control panel 112 controls the start and operation of various electronic components in the device through a controller built into the control panel 112. The controller is a known prior art and will not be described in detail here.

[0025] Users pre-fill the cooling water tank 13 with cooling water. Since the flue gas generated during the ferrosilicon processing is at a high temperature, when the flue gas flows through the duct 21, the controller starts the water pump 231. The water pump 231 can pump the water in the cooling water tank 13 into the circulation pipe 23, and then flow through the cooling chamber 221 of the cooling sleeve 22. The water in the cooling chamber 221 can carry away the heat generated when the high temperature flue gas flows through the duct 21, and then flow back into the cooling water tank 13 through the circulation pipe 23. The cooling effect of the duct 21 is achieved through water circulation, thereby reducing the flue gas temperature and preventing the high temperature flue gas from causing harm to people when it is discharged.

[0026] The cooled flue gas enters the filter cartridge 41 through the air guide pipe 21. The drive motor 49 drives the exhaust fan 48 to rotate, and at the same time, it also drives the drive rod 47 to rotate. The drive rod 47 drives the rotating rod 43 to rotate through the planetary reducer 46. The rotating rod 43 drives multiple filter screens 44 to rotate. When the flue gas flows through the filter screens 44, the silicon iron debris in it will be trapped on the filter screens 44. The mesh size of the multiple filter screens 44 that the flue gas passes through in sequence is set from large to small to form a multi-stage filtration structure, which effectively filters solid impurities in the flue gas. At the same time, due to the dust sweeping brush 4141 on the baffle plate 414 and the passing through... When the filter screen 44 rotates, the dust brush 4141 automatically sweeps off the solid debris trapped on the filter screen 44. The swept-off solid debris will automatically fall into the collection box 413 for recycling and storage. After the flue gas is filtered, the user can remove the closed cover 4132 to obtain the recycled ferrosilicon debris, realizing the recycling and reuse of ferrosilicon resources. The rotation speed of the rotating rod 43 is reduced by the reduction action of the planetary reducer 46 to avoid the filter screen 44 rotating too fast and affecting the flue gas filtration effect. The planetary reducer 46 is existing technology, and its specific structure and function will not be described in detail here.

[0027] When the rotating rod 43 rotates, the adsorption block 452 rotates accordingly. Simultaneously, due to the meshing relationship between the synchronous bevel gear 4522 and the synchronous helical gear ring 415, the synchronous bevel gear 4522 will rotate under the constraint of the synchronous helical gear ring 415, thereby driving the adsorption block 452 to rotate. When the flue gas flows through the adsorption assembly 45, the adsorption block 452 can further remove the tiny harmful substances in the flue gas that have not been removed by the filter screen 44. The adsorption block 452 rotates while rotating with the rotating rod 43, so that the entire surface of the adsorption block 452 can contact the flue gas, thereby improving the adsorption efficiency of the adsorption block 452 and increasing the cleaning effect. The adsorption block 452 can be removed from the insertion rod 451 for easy replacement. The user can remove the sealed shell 412 from the inspection port 411, and then inspect the inside of the filter cartridge 41 through the inspection port 411.

[0028] The above is the overall workflow of this invention. Simply repeat this process the next time you use it.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An environmentally friendly filtration device for ferrosilicon processing, comprising a chassis (1), characterized in that: The upper wall of the chassis body (1) is provided with a pair of lifting electric push rods (14). The output end of one lifting electric push rod (14) is connected to a filter assembly (4), and the output end of the other lifting electric push rod (14) is connected to a support cover (141). A cooling assembly (2) is provided inside the support cover (141). One end of the cooling assembly (2) is connected to the filter assembly (4), and the other end of the cooling assembly (2) is connected to an absorption port (3). A sealing sleeve (31) is provided on the outer edge of the absorption port (3). The filter assembly (4) includes a filter cylinder (41), an exhaust pipe (42), a rotating rod (43), a filter screen (44), and an adsorption assembly (45). The filter cylinder (41) is fixed to the output end of the lifting electric push rod (14), and the exhaust pipe (42) is connected through to the filter cylinder (41). 1) At the end away from the cooling component (2), the rotating rod (43) rotates at the center of the filter cylinder (41). The filter screen (44) is arranged in an array along the length of the rotating rod (43) on the rotating rod (43). The adsorption component (45) is located on the side wall of the end of the rotating rod (43) away from the cooling component (2). The lower inner wall of the filter cylinder (41) is provided with a collection box (413) arranged in an array along the length of the rotating rod (43). The upper edge of the collection box (413) is fixed with a partition (414). The partition (414) is respectively located on the side of the filter screen (44) close to the cooling component (2). The edge of the partition (414) close to the filter screen (44) is provided with a dust removal brush (4141). The dust removal brush (4141) is in contact with the filter screen (44).

2. The environmentally friendly filtration device for ferrosilicon processing according to claim 1, characterized in that: The edge of the filter screen (44) is in contact with the inner wall of the filter cylinder (41). The adsorption assembly (45) includes a rod (451) and an adsorption block (452). The rod (451) is fixed in a ring array to the side wall of the rotating rod (43). The adsorption block (452) is arranged in a ring array on the outside of the rotating rod (43). The adsorption block (452) has an insertion hole (4521) at the end near the rotating rod (43). The rod (451) is movably inserted into the insertion hole (4521). The adsorption block (452) is fixed with a synchronous bevel gear (4522) at the end away from the rotating rod (43). The inner wall of the filter cylinder (41) is fixed with a synchronous helical gear ring (415) along the circumferential direction. The synchronous bevel gear (4522) meshes with the synchronous helical gear ring (415).

3. The environmentally friendly filtration device for ferrosilicon processing according to claim 2, characterized in that: The end of the rotating rod (43) away from the cooling component (2) is provided with a planetary reducer (46). The end of the rotating rod (43) is connected to the output end of the planetary reducer (46). The input end of the planetary reducer (46) is connected to a drive rod (47). An exhaust fan (48) is fixed in a ring array on the side wall of the drive rod (47) away from the planetary reducer (46). The exhaust fan (48) is rotatably disposed in the exhaust pipe (42). A motor frame (421) is fixed in the exhaust pipe (42). A drive motor (49) is fixed at the center of the motor frame (421). The output end of the drive motor (49) is connected to the end of the drive rod (47).

4. The environmentally friendly filtration device for ferrosilicon processing according to claim 3, characterized in that: The cooling assembly (2) includes a vent pipe (21) and a cooling sleeve (22). The vent pipe (21) is located inside the support cover (141) and is spiral-shaped. The absorption port (3) is located at one end of the vent pipe (21), and the other end of the vent pipe (21) is connected to the filter cartridge (41). The cooling sleeve (22) covers the outer surface of the vent pipe (21), and the cooling sleeve (22) is located inside the vent pipe (21). A cooling chamber (221) is provided. Both ends of the cooling sleeve (22) are connected to circulation pipes (23). The circulation pipes (23) are connected to the cooling chamber (221). A cooling water tank (13) is fixed in the middle of the upper wall of the chassis body (1). The circulation pipes (23) are connected to the cooling water tank (13). A water pump (231) is provided at the connection between one of the circulation pipes (23) and the cooling water tank (13).

5. The environmentally friendly filtration device for ferrosilicon processing according to claim 4, characterized in that: The filter cylinder (41) has an inspection port (411) on its side wall, and a sealing shell (412) is movably locked on the inspection port (411). The collection box (413) has a discharge port (4131) at its lower end, and a sealing cover (4132) is movably locked on the discharge port (4131).

6. The environmentally friendly filtration device for ferrosilicon processing according to claim 5, characterized in that: Support rods (11) are fixed to the left and right side walls of the chassis body (1), and handrails (111) are fixed to the upper end of the support rods (11). Control panel (112) is fixed on the handrails (111), and moving wheels (12) are provided below the chassis body (1).

7. The environmentally friendly filtration device for ferrosilicon processing according to claim 6, characterized in that: The control panel (112) has a built-in controller, and the control panel (112), the lifting electric push rod (14), the water pump (231) and the drive motor (49) are electrically connected to the controller respectively.

8. The environmentally friendly filtration device for ferrosilicon processing according to claim 7, characterized in that: The adsorption block (452) is made of activated carbon material, and the sealing sleeve (31) is made of high temperature resistant rubber material.

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