Front exhaust tail gas treatment device

Abstract

The invention relates to a front exhaust tail gas treatment device which comprises an exhaust pipe connected to one side of a feeding end of corresponding battery crushed material cracking equipment; the physical filtering device is connected to the gas outlet end of the exhaust pipe and is used for filtering particulate matters in the tail gas; the flame-retardant mechanism comprises a flame-retardant container connected to the physical filtering device, the gas outlet end of the flame-retardant container is connected to the gas inlet end of the corresponding pyrolysis gas combustion furnace, a closing plate is arranged on the outer side of the gas inlet end of the flame-retardant container through an elastic piece, and the side, not connected with the elastic piece, of the closing plate is fixed through a traction assembly made of combustible materials; when combustion flame of the pyrolysis gas combustion furnace reversely extends into the flame-retardant container, the traction assembly is burnt out, and the closing plate is driven by the elastic force of the elastic piece to close the gas inlet end of the flame-retardant container. On the premise of ensuring the safety of tail gas treatment, the front emission of the cracked tail gas can be realized, so that the doping amount of volatile substances after cracking is effectively reduced.

Description

Technical Field

[0001] This invention relates to a front exhaust gas treatment device, which is installed on one side of the feed end of a battery fragmentation pyrolysis equipment to achieve front exhaust gas treatment of battery pyrolysis exhaust gas while ensuring safety. Background Technology

[0002] Currently, the pyrolysis process of crushed battery fragments mainly involves completely breaking down organic matter into combustible gases (methane, hydrogen, etc.) in a high-temperature, oxygen-free environment (500–650℃), followed by secondary combustion purification before emission to avoid environmental pollution. Existing battery pyrolysis equipment's exhaust gas treatment devices are primarily located on the discharge side of the equipment, concentrating the pyrolysis exhaust gas for treatment. However, this type of exhaust gas treatment device has the following drawbacks in practical use: some volatile substances contained in the pyrolysis exhaust gas are easily mixed into the pyrolyzed battery fragments and enter the discharge. During subsequent cooling, these substances will re-condense and adhere to the battery fragments, thus affecting the purity of subsequent metal resource recovery.

[0003] To improve the purity of subsequently recycled metal resources, some waste battery recycling and processing plants have begun to try moving the emission location of battery pyrolysis exhaust gas forward to the front of the battery pyrolysis equipment, i.e., the feed end side. However, since the pyrolysis process of the battery fragments located on the feed end side of the battery pyrolysis equipment has only just begun, when the pyrolysis exhaust gas is discharged from the feed end side of the battery pyrolysis equipment, it is easy to carry some incompletely pyrolyzed small particles (dust and grease) along with it. This not only greatly increases the difficulty of exhaust gas treatment, but may also cause the open flame from the exhaust gas combustion to ignite at the exhaust end, thus causing a safety accident.

[0004] Therefore, the research objective of this invention is to design a pre-exhaust gas treatment device for battery fragment pyrolysis equipment that can effectively ensure the safety of exhaust gas treatment while achieving pre-emission of pyrolysis exhaust gas, thereby effectively reducing the amount of volatile substances in the pyrolysis materials and helping to improve the purity of subsequent metal resource recovery. Summary of the Invention

[0005] In view of the technical problems existing in the prior art, the present invention provides a front exhaust gas treatment device for battery fragmentation equipment, which can effectively solve the technical problems existing in the prior art.

[0006] The technical solution of this invention is: A front exhaust gas treatment device, comprising: The exhaust pipe is connected to the feed end of the corresponding battery fragment pyrolysis equipment and is used to discharge the exhaust gas generated by pyrolysis. A physical filtration device is connected to the exhaust pipe outlet and is used to filter out particulate matter in the exhaust gas. The flame-retardant mechanism includes a flame-retardant container connected to the outlet side of the physical filtration device. The outlet of the flame-retardant container is connected to the inlet of a corresponding pyrolysis gas combustion furnace. A corresponding closing plate is provided on the outside of the inlet of the flame-retardant container by a corresponding elastic element. The side of the closing plate not connected to the elastic element is fixed by a tensioning assembly made of combustible material, so that the elastic element is set in a tensioned state. The tensioning assembly is fixedly connected to the outlet of the flame-retardant container. When the combustion flame of the pyrolysis gas combustion furnace extends in the opposite direction into the interior of the flame-retardant container, the tensioning assembly is burned off, and the closing plate closes the inlet of the flame-retardant container under the elastic force of the elastic element.

[0007] The pulling assembly includes several pulling ropes arranged in a ring array. One end of each pulling rope is fixed to the back of the closing plate, and the other end of each pulling rope is fixed to the gas outlet of the flame-retardant container. The middle part of each pulling rope passes through a fixing hole on the outer side of the corresponding ring plate.

[0008] The pulling rope is made of nylon, and the annular plate is fixed to the flame-retardant container by a corresponding connecting rod.

[0009] A pressure sensor is installed on the exhaust pipe. When the combustion flame of the pyrolysis gas combustion furnace extends in the opposite direction into the flame-retardant container, the pull rope is burned off. The closing plate forms a seal on the air inlet of the flame-retardant container under the elastic force of the elastic element. The pressure sensor detects the increase in air pressure in the exhaust pipe and transmits the corresponding electrical signal to the corresponding electrical controller to issue an alarm.

[0010] An oil trap is installed on the exhaust pipe to capture oil particles in the gas flowing through the exhaust pipe and transfer the captured oil back to the feed end of the battery fragment pyrolysis equipment for pyrolysis again.

[0011] The exhaust pipe includes a horizontal exhaust section, and the two ends of the horizontal exhaust section are respectively connected to the feed end of the battery fragmentation equipment and the air inlet of the physical filtration device through corresponding connecting pipes.

[0012] The oil trap includes an oil trapping spiral plate rotatably disposed in the horizontal exhaust section of the exhaust pipe, and the oil trapping spiral plate is connected to the output shaft end of a corresponding oil trapping drive motor via a corresponding transmission shaft.

[0013] The physical filtration device uses a filter bag dust collector, and the elastic element uses a helical spring.

[0014] The air inlet of the exhaust pipe is connected to the top of the corresponding exhaust chamber. The discharge end of the exhaust chamber faces the feed end of the battery fragmentation and pyrolysis equipment. The feed end of the exhaust chamber is connected to a corresponding feed pipe, which is connected to the discharge end of the corresponding lifting mechanism. A material pushing spiral plate is provided between the feed pipe and the exhaust chamber. The feeding spiral plate is driven to the output shaft of the corresponding feeding motor through a corresponding drive shaft. An isolation plate is inclinedly provided in the exhaust chamber above the feeding spiral plate. A corresponding guide tube is installed through the middle of the isolation plate. A corresponding fan impeller is rotatably installed in the guide tube through a corresponding driven shaft. The driven shaft is driven to the output shaft of the feeding motor through a corresponding driven transmission mechanism.

[0015] The driven transmission mechanism includes a linkage shaft that is horizontally rotatably installed in the exhaust chamber. The two ends of the linkage shaft are respectively connected to the output shaft of the feeding motor and the driven shaft through gear meshing. A number of corresponding grease collection plates are evenly distributed on the linkage shaft.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1) This invention adds a flame-retardant mechanism, which includes a flame-retardant container connected to the outlet side of the physical filtration device. A closing plate is provided on the outside of the inlet side of the flame-retardant container via a corresponding elastic element. The side of the closing plate not connected to the elastic element is fixed by a tensioning assembly made of combustible material, so that the elastic element is in a tensioned state. This tensioning assembly is fixedly connected to the outlet side of the flame-retardant container. By setting up the flame-retardant container, a spatial isolation is effectively formed when an open flame spreads towards the exhaust end, thereby preventing the open flame from spreading further forward and improving the safety of exhaust gas treatment.

[0017] 2) When the combustion flame of the pyrolysis gas furnace extends backward into the interior of the flame-retardant container, the traction component made of combustible material will be burned off, thereby causing the closing plate to seal the gas inlet of the flame-retardant container under the elastic force of the elastic element. In this way, the backflowing open flame can be completely isolated, so as to achieve the pre-emission of pyrolysis tail gas while ensuring the safety of tail gas treatment. This effectively reduces the amount of volatile substances mixed in the pyrolysis material, thereby helping to improve the purity of subsequent metal resource recovery.

[0018] 3) The pulling assembly of the present invention includes a plurality of pulling ropes arranged in a ring array. One end of each pulling rope is fixed to the back of the closing plate and the other end is fixed to the gas outlet of the flame-retardant container. The middle part of each pulling rope passes through the fixing hole on the outer side of the corresponding ring plate. With the intervention of the ring plate, the pulling ropes arranged in a ring array are dispersed, so as to effectively increase the burn-off probability of the pulling assembly while maintaining sufficient pulling force. This ensures both the pulling effect on the closing plate and the timely burn-off of the pulling assembly when an open flame enters the flame-retardant container, thus ensuring the practical effect of the present invention.

[0019] 4) The exhaust pipe of the present invention is equipped with a corresponding pressure sensor. When the pull rope is burned off and the closing plate forms a seal on the air inlet of the flame-retardant container under the elastic force of the elastic element, the pressure sensor can detect the increase in air pressure in the exhaust pipe in time and transmit the signal to the corresponding electric controller to issue an alarm, thereby further improving the operational safety of the equipment.

[0020] 5) The exhaust pipe of the present invention is equipped with an oil trap. The horizontal exhaust section of the exhaust pipe allows the pyrolysis exhaust gas to flow smoothly. Then, the rotation of the oil trap spiral plate increases the contact rate between the airflow and the oil trap spiral plate, so that small oil particles in the airflow can be effectively attached to the oil trap spiral plate and enriched. Under the transmission action of the oil trap spiral plate, the enriched oil is reversed and transported back to the feed end of the battery fragment pyrolysis equipment for pyrolysis again. This effectively reduces the amount of small dust and grease entrained in the front exhaust, thereby helping to improve the safety of the front exhaust system.

[0021] 6) The exhaust pipe in this invention is connected to the top of the corresponding exhaust chamber. The discharge end of the exhaust chamber faces the feed end of the battery fragmentation equipment. The feed end of the exhaust chamber is connected to a corresponding feed pipe, which is connected to the discharge end of the corresponding lifting mechanism. By setting the exhaust chamber, the exhaust and feed directions are arranged in the same area in opposite directions. During the process of the feeding motor starting to convey the material, the driven shaft is driven simultaneously, thereby driving the fan impeller to rotate slowly, so as to convey the high-temperature pyrolysis tail gas along the duct. Firstly, it can improve the exhaust smoothness of the high-temperature pyrolysis tail gas. Secondly, it can directionally convey the high-temperature pyrolysis tail gas, so that it can directly flush the material in the feeding process when it is discharged. This effectively preheats the circulating material through the pyrolysis tail gas, thereby effectively improving the subsequent pyrolysis efficiency and pyrolysis effect of the material.

[0022] 7) The driven transmission mechanism of the present invention includes a linkage shaft horizontally rotatably installed in the exhaust chamber. The two ends of the linkage shaft are respectively connected to the output shaft of the feeding motor and the driven shaft through gear meshing transmission. With the intervention of the linkage shaft, the driven shaft, i.e. the fan impeller, can be effectively driven to rotate, thereby ensuring the practical effect of the present invention. Most importantly, an grease collection plate can be effectively set on the linkage shaft, so that the grease collection plate can rotate with the rotation of the linkage shaft, thereby collecting the grease in the pyrolysis tail gas, and further improving the functionality of the present invention. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is a diagram showing the usage state of the present invention.

[0025] Figure 3 This is a schematic diagram of the flame-retardant mechanism of the present invention.

[0026] Figure 4 This is a schematic diagram of the oil sludge collector of the present invention.

[0027] Figure 5 This is an assembly diagram of components such as the exhaust pipe, exhaust chamber, and material lifting mechanism.

[0028] Figure 6 This is an assembly diagram of components such as isolation plates, ducts, and fan impellers.

[0029] Figure 7 This is a schematic diagram of the material lifting mechanism.

[0030] Figure 8 This is a schematic diagram showing the structure of the exhaust pipe connected to the feed end of the battery fragmentation equipment through the exhaust chamber.

[0031] In the attached diagram: 1. Exhaust pipe; 101. Horizontal exhaust section; 102. Connecting pipe; 2. Battery fragment pyrolysis equipment; 3. Physical filtration device; 4. Flame retardant mechanism; 401. Flame retardant container; 402. Elastic element; 403. Closing plate; 404. Pulling assembly; 404. Pulling rope; 4041. Annular plate; 4042. Pyrolysis gas combustion furnace; 5. Connecting rod; 6. Pressure sensor; 7. Oil trap; 8. Oil trap spiral plate; 801. Drive shaft; 802. Oil trap drive motor; 803. Exhaust chamber; 9. Feed pipe; 10. Lifting mechanism; 11. Feeding spiral plate; 12. Drive shaft; 13. Feeding motor; 14. Isolation plate; 15. Conduit; 16. Driven shaft; 17. Fan impeller; 18. Driven transmission mechanism; 19. Grease trap; 20. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] refer to Figure 1-8 A front exhaust gas treatment device, comprising: Exhaust pipe 1 is connected to the feed end of the corresponding battery fragment pyrolysis equipment 2 and is used to discharge the exhaust gas generated by pyrolysis. The physical filtration device 3 is connected to the outlet end of the exhaust pipe 1 and is used to filter out particulate matter in the exhaust gas. The flame-retardant mechanism 4 includes a flame-retardant container 401 connected to the outlet side of the physical filter device 3. The outlet of the flame-retardant container 401 is connected to the inlet of the corresponding pyrolysis gas combustion furnace 5. A corresponding closing plate 403 is provided on the outside of the inlet of the flame-retardant container 401 by a corresponding elastic element 402. The side of the closing plate 403 not connected to the elastic element 402 is fixed by a tensioning component 404 made of combustible material, so that the elastic element 402 is set in a tensioned state. The tensioning component 404 is fixedly connected to the outlet of the flame-retardant container 401. When the combustion flame of the pyrolysis gas combustion furnace 4 extends in the opposite direction into the interior of the flame-retardant container 401, the tensioning component 404 is burned off, and the closing plate 403 closes the inlet of the flame-retardant container 401 under the elastic force of the elastic element 402.

[0034] This invention adds a flame-retardant mechanism 4, which includes a flame-retardant container 401 connected to the outlet side of the physical filter device 3. A closing plate 403 is provided on the outside of the inlet side of the flame-retardant container 401 by a corresponding elastic element 402. The side of the closing plate 403 not connected to the elastic element 403 is fixed by a tensioning component 404 made of combustible material, so that the elastic element 402 is set in a tensioned state. The tensioning component 404 is fixedly connected to the outlet side of the flame-retardant container 401. By setting the flame-retardant container 401, a spatial isolation is effectively formed when the open flame spreads to the exhaust end, thereby preventing the open flame from spreading further forward and improving the safety of exhaust gas treatment. When the combustion flame of the pyrolysis gas combustion furnace 5 extends backward into the interior of the flame-retardant container 401, the tensioning component 404 made of combustible material will be burned off, thereby causing the closing plate 403 to seal the inlet side of the flame-retardant container 401 under the elastic force of the elastic element 402. In this way, the open flame of the backflow can be completely isolated, so as to achieve the pre-emission of pyrolysis tail gas while ensuring the safety of tail gas treatment, thereby effectively reducing the amount of volatile substances in the pyrolysis material and helping to improve the purity of subsequent metal resource recovery.

[0035] The pulling assembly 404 includes a plurality of pulling ropes 4041 arranged in a ring array. One end of each pulling rope 4041 is fixed to the back of the closing plate 403, and the other end of each pulling rope 4041 is fixed to the gas outlet of the flame-retardant container 401. The middle part of each pulling rope 4041 is installed through a fixing hole on the outer side of the corresponding ring plate 4042.

[0036] The pulling rope 4041 is made of nylon rope, and the annular plate 4042 is fixed to the flame-retardant container 401 by a corresponding connecting rod 6.

[0037] The pulling assembly 404 of the present invention includes a plurality of pulling ropes 4041 arranged in a ring array. One end of each pulling rope 4041 is fixed to the back of the closing plate 4042, and the other end is fixed to the gas outlet of the flame-retardant container 401. The middle part of each pulling rope 4041 is installed through a fixing hole on the outer side of the corresponding ring plate 4042. With the intervention of the ring plate 4042, the pulling ropes 4041 arranged in a ring array are dispersed, so as to effectively increase the burn-off probability of the pulling assembly 404 while maintaining sufficient pulling force. This ensures both the pulling effect on the closing plate 403 and the timely burn-off of the pulling assembly 404 when an open flame enters the flame-retardant container 401, thus ensuring the practical effect of the present invention.

[0038] A pressure sensor 7 is installed on the exhaust pipe 1. When the combustion flame of the pyrolysis gas combustion furnace 5 extends in the opposite direction into the flame-retardant container 401, the pull rope 4041 is burned off. The closing plate 403 forms a seal on the air inlet of the flame-retardant container 401 under the elastic force of the elastic element 402. The pressure sensor 7 detects the increase in gas pressure in the exhaust pipe and transmits the corresponding electrical signal to the corresponding electrical controller to issue an alarm, thereby further improving the operational safety of the equipment.

[0039] An oil trap 8 is installed on the exhaust pipe 1 to capture oil particles in the gas flowing through the exhaust pipe 1 and transfer the captured oil back to the feed end of the battery fragment pyrolysis equipment 2 for pyrolysis again.

[0040] The exhaust pipe 1 includes a horizontal exhaust section 101, and the two ends of the horizontal exhaust section 101 are respectively connected to the feed end of the battery fragmentation equipment 2 and the air inlet of the physical filter device 3 through corresponding connecting pipes 102.

[0041] The oil catcher 8 includes an oil catcher spiral plate 801 rotatably disposed on the horizontal exhaust section 101 of the exhaust pipe 1. The oil catcher spiral plate 801 is connected to the output shaft end of the corresponding oil catcher drive motor 803 via a corresponding drive shaft 802.

[0042] The exhaust pipe 1 of this invention is equipped with an oil trap 8. The horizontal exhaust section 101 of the exhaust pipe 1 allows the pyrolysis exhaust gas to flow smoothly. Then, the rotation of the oil trap spiral plate 801 increases the contact rate between the airflow and the oil trap spiral plate 801, thereby effectively adhering small oil particles in the airflow to the oil trap spiral plate 801 and forming a rich accumulation. Under the transmission action of the oil trap spiral plate 801, the accumulated oil is reversed and transported back to the feed end of the battery fragment pyrolysis equipment 2 for pyrolysis again. This effectively reduces the amount of small dust and grease entrained in the front exhaust, thereby helping to improve the safety of the front exhaust system.

[0043] The physical filtration device 3 is a bag filter dust collector. Its specific structure will not be described in detail here. The elastic element 402 is a helical spring.

[0044] The air inlet of the exhaust pipe 1 is connected to the top of the corresponding exhaust chamber 9. The discharge end of the exhaust chamber 9 faces the feed end of the battery fragmentation and pyrolysis equipment 2. The feed end of the exhaust chamber 9 is connected to a corresponding feed pipe 10, which is connected to the discharge end of the corresponding lifting mechanism 11 (in this embodiment, the lifting mechanism 11 is an auger lifting machine). A material pushing screw plate 12 is provided between the feed pipe 10 and the exhaust chamber 9. The feeding screw plate 12 is driven to the output shaft of the corresponding feeding motor 14 via a corresponding drive shaft 13. An isolation plate 15 is inclinedly provided in the exhaust chamber 9 on the upper side of the feeding screw plate 12. A corresponding guide tube 16 is installed through the middle of the isolation plate 15. A corresponding fan impeller 18 is rotatably installed in the guide tube 16 via a corresponding driven shaft 17. The driven shaft 17 is driven to the output shaft of the feeding motor 14 via a corresponding driven transmission mechanism 19.

[0045] By setting the exhaust chamber 9 so that the exhaust and feed directions are opposite and located in the same area, the driven shaft 17 is driven synchronously when the feeding motor 14 starts to convey the material. This drives the fan impeller 18 to rotate slowly, so as to convey the high-temperature pyrolysis tail gas along the duct 16. Firstly, this improves the smoothness of the exhaust of the high-temperature pyrolysis tail gas. Secondly, it enables the directional conveying of the high-temperature pyrolysis tail gas, so that it can directly flush the material in the feeding process when it is discharged. This effectively preheats the flowing material with the pyrolysis tail gas, thereby effectively improving the subsequent pyrolysis efficiency and pyrolysis effect of the material.

[0046] The driven transmission mechanism 19 includes a linkage shaft horizontally rotatably mounted within the exhaust chamber 9. Both ends of the linkage shaft are connected to the output shaft of the feeding motor 14 and the driven shaft 17 respectively via gear meshing. A plurality of corresponding grease-collecting plates 20 are evenly distributed on the linkage shaft. With the intervention of the linkage shaft, the driven shaft 17, i.e., the fan impeller 18, can be effectively driven to rotate, thus ensuring the practical effect of the invention. Most importantly, the grease-collecting plates 20 can be effectively set on the linkage shaft, allowing them to rotate with the rotation of the linkage shaft, thereby collecting grease in the pyrolysis exhaust gas and further enhancing the functionality of the invention.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A pre-exhaust gas treatment device, characterized in that, include: The exhaust pipe (1) is connected to the feed end of the corresponding battery fragment pyrolysis equipment (2) and is used to discharge the exhaust gas generated by pyrolysis. A physical filtration device (3) is connected to the outlet end of the exhaust pipe (1) for filtering out particulate matter in the exhaust gas; The flame-retardant mechanism (4) includes a flame-retardant container (401) connected to the outlet side of the physical filter (3). The outlet of the flame-retardant container (401) is connected to the inlet of the corresponding pyrolysis gas combustion furnace (5). A corresponding closing plate (403) is provided on the outside of the inlet of the flame-retardant container (401) by a corresponding elastic element (402). The side of the closing plate (403) not connected to the elastic element (402) is fixed by a traction component (404) made of combustible material, so that the elastic element (402) is set in a tensioned state. The traction component (404) is fixedly connected to the outlet of the flame-retardant container (401). When the combustion flame of the pyrolysis gas combustion furnace (4) extends in the opposite direction into the interior of the flame-retardant container (401), the traction component (404) is burned off, and the closing plate (403) forms a seal on the inlet of the flame-retardant container (401) under the elastic force of the elastic element (402).

2. The pre-exhaust gas treatment device according to claim 1, characterized in that, The pulling assembly (404) includes a plurality of pulling ropes (4041) arranged in a ring array. One end of each pulling rope (4041) is fixed to the back of the closing plate (403), and the other end of each pulling rope (4041) is fixed to the gas outlet of the flame-retardant container (401). The middle part of each pulling rope (4041) is installed through a fixing hole on the outside of the corresponding ring plate (4042).

3. The front exhaust gas treatment device according to claim 2, characterized in that, The pulling rope (4041) is made of nylon rope, and the annular plate (4042) is fixed to the flame-retardant container (401) by a corresponding connecting rod (6).

4. The front exhaust gas treatment device according to claim 3, characterized in that, A pressure sensor (7) is installed on the exhaust pipe (1). When the combustion flame of the pyrolysis gas combustion furnace (5) extends in the opposite direction into the flame-retardant container (401), the pull rope (4041) is burned off. The closing plate (403) forms a seal on the air inlet of the flame-retardant container (401) under the elastic force of the elastic element (402). The pressure sensor (7) detects the increase in gas pressure in the exhaust pipe and transmits the corresponding electrical signal to the corresponding electric controller to issue an alarm.

5. The pre-exhaust gas treatment device according to claim 1, characterized in that, An oil trap (8) is provided on the exhaust pipe (1) to capture oil particles in the gas flowing through the exhaust pipe (1) and transfer the captured oil back to the feed end of the battery fragment pyrolysis equipment (2) for pyrolysis again.

6. The front exhaust gas treatment device according to claim 5, characterized in that, The exhaust pipe (1) includes a horizontal exhaust section (101), and the two ends of the horizontal exhaust section (101) are respectively connected to the feed end of the battery fragment pyrolysis device (2) and the air inlet of the physical filter device (3) through corresponding connecting pipes (102).

7. The pre-exhaust gas treatment device according to claim 6, characterized in that, The oil catcher (8) includes an oil catcher spiral plate (801) rotatably disposed on the horizontal exhaust section (101) of the exhaust pipe (1), and the oil catcher spiral plate (801) is connected to the output shaft end of the corresponding oil catcher drive motor (803) via a corresponding drive shaft (802).

8. The pre-exhaust gas treatment device according to claim 1, characterized in that, The physical filtration device (3) adopts a filter bag dust collector, and the elastic element (402) adopts a helical spring.

9. The pre-exhaust gas treatment device according to claim 1, characterized in that, The air inlet of the exhaust pipe (1) is connected to the top of the corresponding exhaust chamber (9). The outlet of the exhaust chamber (9) faces the feed end of the battery fragmentation device (2). The feed end of the exhaust chamber (9) is connected to a corresponding feed pipe (10), which is connected to the outlet of the corresponding lifting mechanism (11). A material feeding spiral plate (12) is provided between the feed pipe (10) and the exhaust chamber (9). The feeding spiral plate (12) is driven by a corresponding drive shaft. 13) The transmission is connected to the output shaft end of the corresponding feeding motor (14); an isolation plate (15) is inclinedly arranged in the exhaust chamber (9) on the upper side of the feeding spiral plate (12), and a corresponding duct (16) is installed through the middle of the isolation plate (15). A corresponding fan impeller (18) is rotatably installed in the duct (16) through a corresponding driven shaft (17), and the driven shaft (17) is transmitted to the output shaft end of the feeding motor (14) through a corresponding driven transmission mechanism (19).

10. A pre-exhaust gas treatment device according to claim 9, characterized in that, The driven transmission mechanism (19) includes a linkage shaft that is horizontally rotatably installed in the exhaust chamber (9). The two ends of the linkage shaft are respectively connected to the output shaft of the feeding motor (14) and the driven shaft (17) through gear meshing transmission. A number of corresponding grease collection plates (20) are evenly distributed on the linkage shaft.

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