A lithium battery negative electrode tar incineration and purification device
By combining metal filter plates, cleaning brushes, zeolite molecular sieves, adsorbent silica gel, and precious metal honeycomb catalyst blocks, the problems of poor absorbent selectivity and easy clogging in lithium battery exhaust gas treatment are solved, achieving efficient purification and low-cost exhaust gas treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANJIN RANDYS IND EQUIP
- Filing Date
- 2024-10-08
- Publication Date
- 2026-08-04
AI Technical Summary
Existing lithium battery exhaust gas treatment equipment suffers from problems such as poor absorbent selectivity, low absorption efficiency, easy clogging of filter devices, limited activated carbon adsorption capacity, and high regeneration energy consumption, resulting in poor purification effect and increased production costs.
The device uses metal filter plates and cleaning brushes to remove large particles of impurities. Zeolite molecular sieves and silica gel adsorb harmful substances, while precious metal honeycomb catalyst blocks catalyze the reaction. Combined with the design of filter fan plates and suction pumps, it achieves automatic cleaning and efficient decomposition and conversion of waste gas.
It effectively removes large particulate impurities from waste gas, improves purification efficiency, prevents equipment blockage, reduces maintenance costs, ensures production continuity and the stability of treatment results, and reduces operating costs.
Smart Images
Figure CN118949686B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of lithium battery technology, specifically relating to a lithium battery negative electrode tar incineration and purification device. Background Technology
[0002] With the rapid development of the lithium battery industry, a large amount of tar-laden gas is generated during the production of lithium battery anode materials. This tar-laden gas not only has high chemical toxicity and environmental hazards, but also leads to resource waste if not properly treated.
[0003] Traditional waste gas treatment equipment often suffers from poor selectivity and low absorption efficiency due to the poor selectivity of commonly used absorbents for specific waste gas components during the absorption process. Many absorbents, while absorbing the target components, also adsorb large amounts of other impurities or irrelevant gases, resulting in insufficient absorption of the truly needed waste gas components. This not only reduces the purification effect but may also increase the difficulty and cost of subsequent treatment steps. During filtration, solid particles and other contaminants in the waste gas easily accumulate on the surface or in the pores of the filter media, leading to increased flow resistance and reduced filtration efficiency. Frequent replacement not only significantly increases production costs but also disrupts production continuity due to equipment downtime for maintenance. Taking activated carbon adsorption as an example, while it is effective in treating certain waste gases, its adsorption capacity quickly reaches saturation when faced with high-concentration waste gases. This necessitates frequent regeneration or replacement of activated carbon, severely impacting filtration efficiency. Moreover, the regeneration process of activated carbon itself consumes significant energy and resources, further increasing treatment costs and environmental burden. Summary of the Invention
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a lithium battery negative electrode tar incineration purification treatment device, comprising: an incinerator body and a housing; a pretreatment box, wherein the pretreatment box is installed on one side of the housing, the bottom of the pretreatment box is provided with an opening, and a sealing cover is detachably installed at the opening; a metal filter plate for removing large particulate impurities in the exhaust gas is detachably installed inside the pretreatment box, the metal filter plate is vertically arranged, a first long rod is rotatably installed between the two sides of the inner wall of the pretreatment box, one end of the first long rod passes through the pretreatment box and the metal filter plate and extends into the housing, two cleaning brushes are fixedly installed on the outer surface of the first long rod for cleaning the front and back sides of the metal filter plate, and the pretreatment box is connected to the incinerator body through a pipe;
[0005] A purification device is slidably installed between the two sides of the inner wall of the box, which is used to decompose and transform harmful substances in the exhaust gas. The first long rod extends through the box into its interior and is located directly below the purification device. Two first circular plates are fixedly sleeved on the outer surface of the first long rod, and the center of the first circular plate is offset from the center of the first long rod.
[0006] A drive motor is fixedly installed on one side of the pretreatment box, and its output end is fixedly connected to one end of the first long rod. A first gear is fixedly sleeved on the outer surface of the first long rod. Multiple cleaning roller brushes are rotatably installed between the two sides of the inner wall of the box. One end of each cleaning roller brush penetrates the box and extends to its outside. A small gear is fixedly installed on one end of each cleaning roller brush. The multiple small gears mesh with each other. The first gear meshes with one of the small gears. Two filter fan blades are rotatably installed between the two sides of the inner wall of the box. A second gear is fixedly installed on one end of each of the two filter fan blades. The two second gears mesh.
[0007] One end of the first long rod and one side of one of the second gears are fixedly installed with pulleys. The two pulleys are connected by belt drive. A connecting pipe is fixedly inserted into the box, with both ends inserted into the box. One end is located above the purification device and the other end is located below it. A suction pump is fixedly connected between the box and the pretreatment box.
[0008] A pipe is connected between the box body and the pretreatment box, and an electromagnetic valve is installed on the pipe.
[0009] Preferably, the purification device includes a purification box that is slidably installed between the two sides of the inner wall of the box. The top of the purification box is provided with an opening. The purification box contains a plurality of chemical adsorption elements and a plurality of catalytic devices. The plurality of chemical adsorption elements and the plurality of catalytic devices are arranged alternately in the upper and lower parts of the purification box. The chemical adsorption elements include zeolite molecular sieves and silica gel. The zeolite molecular sieves are fixedly installed between the two sides of the inner wall of the purification box. Silica gel is laid below the zeolite molecular sieves.
[0010] Preferably, the catalytic device includes a precious metal honeycomb catalyst block fixedly installed between the two sides of the inner wall of the purification box, and the precious metal honeycomb catalyst block is arranged alternately with the zeolite molecular sieve and the adsorbed silica gel.
[0011] Preferably, a spray head is fixedly inserted on one side of the pretreatment box, which is connected to the liquid storage tank through a pipe, and an electromagnetic valve is provided on the sealing cover.
[0012] Preferably, both the pretreatment box and the sealing cover are provided with slots, and the outer periphery of the metal filter plate is engaged in the slots.
[0013] Preferably, a first semi-threaded rod is fixedly installed on one side of the pretreatment box, and a second semi-threaded rod is provided on the sealing cover. A threaded cylinder is threaded between the first semi-threaded rod and the second semi-threaded rod.
[0014] Preferably, a rotating rod is rotatably installed between the two sides of the inner wall of the box, and multiple stirring plates are fixedly installed in a circular array on the outer surface of the rotating rod. The stirring plates are arc-shaped, and rubber pads are fixedly installed on the outer periphery of the stirring plates, which are in contact with the inner wall of the box. A rotating motor for driving the rotating rod to rotate is installed on the box.
[0015] Preferably, a diversion plate is fixedly installed between the two sides of the inner wall at the top of the box, and the diversion plate is provided with multiple openings. A discharge cylinder is provided on one side of the box, and a cooler is fixedly installed on one side of the discharge cylinder. The air outlet of the cooler extends into the discharge cylinder.
[0016] The present invention has the following beneficial effects:
[0017] This invention effectively removes large particulate impurities from exhaust gas by using a pretreatment box with a metal filter plate and a cleaning brush that rotates automatically. This reduces filter plate clogging and extends equipment lifespan. The purification device features a synchronized vibration mechanism; as the first long rod rotates, it drives multiple cleaning rollers to clean the surface of the purification device. Simultaneously, it rotates one of the filter fan blades. Since both filter fan blades are equipped with second gears that mesh, the simultaneous rotation of both blades generates suction, which then sucks up debris from the cleaned surface of the purification device. (Open the connecting pipe.) The electromagnetic valves on the device can draw in particulate matter, which is then injected into a pretreatment box via a suction pump for centralized collection and further processing. The rotating two filter blades also agitate and filter the exhaust gas, which not only improves the decomposition and conversion efficiency of harmful substances but also prevents the accumulation of dirt and reduces maintenance costs. In addition, the centralized collection of particulate matter through the suction pump and pipes further optimizes the exhaust gas treatment process, ensuring the stability and continuity of the treatment effect. Overall, the device demonstrates significant benefits in improving treatment efficiency, reducing operating costs, and ensuring production continuity. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is the present invention. Figure 1 Another three-dimensional structural diagram;
[0020] Figure 3 This is the present invention. Figure 1 A three-dimensional sectional view of the structure;
[0021] Figure 4 This is the present invention. Figure 1 Another three-dimensional structural sectional view;
[0022] Figure 5 This is the present invention. Figure 1 Another three-dimensional structural sectional view;
[0023] Figure 6 This is the present invention. Figure 1 Another three-dimensional structural sectional view;
[0024] Figure 7 This is the present invention. Figure 6 Enlarged view of point A in the middle;
[0025] Figure 8 This is the present invention. Figure 5 Partial planar structural diagram of the chemical adsorption element and catalytic device.
[0026] Numbered components in the diagram: 1. Incinerator body; 2. Box; 3. Pretreatment box; 31. Sealing cover; 4. Metal filter plate; 5. First long rod; 51. Cleaning brush; 52. First circular plate; 6. Purification device; 61. Purification box; 7. Chemical adsorption component; 71. Zeolite molecular sieve; 72. Adsorbent silica gel; 8. Catalytic device; 81. Precious metal honeycomb catalyst block; 9. Drive motor; 10. First gear; 11. Rotating rod; 12. Stirring plate; 13. Rotating motor; 14. Discharge cylinder; 15. Cleaning roller brush; 16. Small gear; 17. Filter fan blade; 18. Spray head; 19. First semi-threaded rod; 20. Second semi-threaded rod; 21. Threaded cylinder; 22. Diverter plate; 23. Second gear; 24. Pulley; 25. Connecting pipe; 251. Through pipe; 26. Suction pump; 27. Refrigerator. Detailed Implementation
[0027] 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.
[0028] It should be noted that the terms "vertical," "horizontal," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.
[0029] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.
[0030] Reference Figure 1-8It is known that a lithium battery negative electrode tar incineration and purification treatment device includes: an incinerator body 1 and a box body 2;
[0031] A pretreatment box 3 is installed on one side of the box body 2. The bottom of the pretreatment box 3 has an opening, and a detachable cover 31 is installed at the opening. A metal filter plate 4 for removing large particulate impurities in the exhaust gas is detachably installed inside the pretreatment box 3. The metal filter plate 4 is vertically arranged. A first long rod 5 is rotatably installed between the two sides of the inner wall of the pretreatment box 3. One end of the first long rod 5 passes through the pretreatment box 3 and the metal filter plate 4 and extends into the box body 2. Two cleaning brushes 51 are fixedly installed on the outer surface of the first long rod 5 for cleaning the front and back of the metal filter plate 4. The pretreatment box 3 is connected to the incinerator body 1 through a pipe.
[0032] Purification device 6 is slidably installed between the two sides of the inner wall of the housing 2. It is used to decompose and transform harmful substances in the exhaust gas. The first long rod 5 extends through the housing 2 into its interior and is located directly below the purification device 6. Two first circular plates 52 are fixedly sleeved on the outer surface of the first long rod 5. The center of the first circular plates 52 is offset from the center of the first long rod 5. The first circular plates 52 abut against the purification device 6, and sliding grooves are provided on both sides of the inner wall of the housing 2. The two ends of the purification device 6 slide in the sliding grooves respectively, so that the purification device 6 can slide up and down within a certain range.
[0033] A drive motor 9 is fixedly installed on one side of the pretreatment box 3, and its output end is fixedly connected to one end of the first long rod 5. A first gear 10 is fixedly sleeved on the outer surface of the first long rod 5. Multiple cleaning roller brushes 15 are rotatably installed between the two sides of the inner wall of the box 2. One end of each cleaning roller brush 15 penetrates the box 2 and extends to its outside. A small gear 16 is fixedly installed on one end of each cleaning roller brush 15. The multiple small gears 16 mesh with each other. The first gear 10 meshes with one of the small gears 16. Two filter fan blades 17 are rotatably installed between the two sides of the inner wall of the box 2. A second gear (23) is fixedly installed on one end of each of the two filter fan blades 17. The two second gears 23 mesh.
[0034] One end of the first long rod 5 and one side of one of the second gears 23 are both fixedly installed with pulleys 24. The two pulleys 24 are connected by belt drive. A connecting pipe 25 is fixedly inserted into the box 2, and an electromagnetic valve is installed on it to control the flow of gas. Both ends of the connecting pipe 25 are inserted into the box 2, with one end located above the purification device 6 and the other end located below it. A suction pump 26 is fixedly connected between the box 2 and the pretreatment box 3.
[0035] A pipe 251 is connected between the box 2 and the pretreatment box 3, and an electromagnetic valve is installed on the pipe 251.
[0036] First, before entering the treatment device, the exhaust gas passes through a pretreatment box 3. The pretreatment box 3 contains vertically arranged metal filter plates 4 to remove large particulate impurities from the exhaust gas. The bottom of the pretreatment box 3 has an opening and a removable cover 31 for easy maintenance and cleaning. A first long rod 5 is installed between the two sides of the inner wall of the pretreatment box 3, with one end passing through the pretreatment box 3 and the metal filter plates 4, extending into the box body 2. Two cleaning brushes 51 are fixed to the outer surface of the first long rod 5. These brushes rotate as the drive motor 9 rotates the first long rod 5, cleaning both sides of the metal filter plates 4 to prevent the accumulation of impurities.
[0037] The purification device 6 is slidably installed between the two sides of the inner wall of the housing 2. Driven by the first long rod 5 and the first circular plate 52 of the drive assembly 9, it vibrates up and down to prevent the accumulation of dirt on the surface of the purification device 6. Simultaneously, the rotation of the first long rod 5 drives the first gear 10 to rotate, which in turn drives the meshing pinion 16 to rotate, thereby driving multiple meshing pinions 16 to rotate, which in turn drives multiple cleaning roller brushes 15 to rotate, cleaning the surface of the purification device 6. At the same time, due to the action of the two pulleys 24, one of the filter fan blades 17 can rotate. Since both filter fan blades 17 are fixed with the first… Two gears 23 mesh, causing the two filter fan blades 17 to rotate simultaneously, generating suction force. This suction force can then be used to extract debris from the surface of the clean filtration and purification device 6. The debris can be extracted by opening the solenoid valve on the connecting pipe 25. The particles are then drawn into the pretreatment box 3 by the suction pump 26 for centralized collection and further processing. The rotation of the two filter fan blades 17 can also agitate and filter the exhaust gas. Solenoid valves are installed at both ends of the connecting pipe 25. Their opening and closing depends on the actual situation. They are closed when not in use to prevent exhaust gas from remaining in the pipe. When the device is not treating exhaust gas, the filter structure can be cleaned.
[0038] Reference Figure 4-5It is understood that the purification device 6 includes a purification box 61 slidably installed between the two sides of the inner wall of the box 2. The top of the purification box 61 is provided with an opening. The purification box 61 contains a plurality of chemical adsorption elements 7 and a plurality of catalytic devices 8. The plurality of chemical adsorption elements 7 and the plurality of catalytic devices 8 are arranged alternately in the upper and lower parts of the purification box 61. The chemical adsorption elements 7 include zeolite molecular sieves 71 and silica gel 72. The zeolite molecular sieves 71 are fixedly installed between the two sides of the inner wall of the purification box 61, and the silica gel 72 is laid below the zeolite molecular sieves 71. The catalytic devices 8 include a precious metal honeycomb catalyst block 81 fixedly installed between the two sides of the inner wall of the purification box 61. The precious metal honeycomb catalyst block 81 is arranged alternately in the upper and lower parts of the zeolite molecular sieves 71 and the silica gel 72.
[0039] The chemical adsorption element consists of zeolite molecular sieve 71 and silica gel 72. Zeolite molecular sieve 71 possesses a unique pore structure and surface characteristics, exhibiting good adsorption capacity for certain tar components and selectively adsorbing specific harmful substances in waste gas, such as certain organic compounds and heavy metal ions. Silica gel 72, on the other hand, has a large specific surface area and excellent adsorption performance, capable of adsorbing moisture and some small-molecule pollutants in waste gas. Together, they achieve effective adsorption and removal of various harmful substances in waste gas.
[0040] The precious metal honeycomb catalyst block 81 in the catalytic device 8 plays a catalytic role in the purification process. When the exhaust gas passes through the purification box 61, the precious metal honeycomb catalyst block 81 can promote the chemical reaction between harmful substances, transforming some harmful substances that are difficult to remove directly into substances that are easier to treat. This catalytic effect not only improves the purification efficiency, but also reduces the difficulty and cost of subsequent treatment.
[0041] Reference Figure 3 It is known that a spray head 18 is fixedly inserted on one side of the pretreatment box 3, which is connected to the liquid storage tank through a pipe, and an electromagnetic valve is provided on the sealing cover 31.
[0042] During the cleaning process, the spray head 18 sprays out cleaning liquid to rinse the dirt and tar on the metal filter plate 4, and then the dirt is discharged by opening the solenoid valve. In this way, not only can the impurities attached to the metal filter plate 4 be washed away, but some stubborn stains can also be removed, further improving the cleaning effect.
[0043] Referring to 6-7, both the pretreatment box 3 and the sealing cover 31 are provided with slots. The outer periphery of the metal filter plate 4 is engaged in the slots. A first semi-threaded rod 19 is fixedly installed on one side of the pretreatment box 3. A second semi-threaded rod 20 is provided on the sealing cover 31. A threaded cylinder 21 is threaded between the first semi-threaded rod 19 and the second semi-threaded rod 20.
[0044] The slots constructed on the pretreatment box 3 and the sealing cover 31 are used to engage the outer periphery of the metal filter plate 4, ensuring that the metal filter plate 4 is stably installed and plays its role in filtering large particulate impurities. A threaded cylinder 21 is threaded between the first semi-threaded rod 19 fixedly installed on one side of the pretreatment box 3 and the second semi-threaded rod 20 provided on the sealing cover 31. By rotating the threaded cylinder 21, the pretreatment box 3 and the sealing cover 31 can be tightly connected or loosened, which facilitates the installation and disassembly of the metal filter plate 4, and also facilitates the maintenance and cleaning of the inside of the pretreatment box 3.
[0045] By directly rotating the threaded cylinder 21, the threaded connection between the first half-threaded rod 19 and the second half-threaded rod 20 can be released, thereby separating the two and disconnecting the pretreatment box 3 and the sealing cover 31. The operation is simple and convenient, making it easy for people to use.
[0046] Reference Figure 4 It is known that a rotating rod 11 is rotatably installed between the two sides of the inner wall of the box 2. Multiple stirring plates 12 are fixedly installed in a ring array on the outer surface of the rotating rod 11. The stirring plates 12 are arc-shaped and rubber pads are fixedly installed on the outer periphery of the stirring plates 12, which are in contact with the inner wall of the box 2. A rotating motor 13 for driving the rotating rod 11 to rotate is installed on the box 2.
[0047] To ensure that the exhaust gas can fully contact the various media used in the purification process and improve the treatment effect, a rotating rod 11 and a stirring plate 12 are installed inside the housing 2. A rotating motor 13 drives the rotating rod 11 to rotate, and multiple arc-shaped stirring plates 12 arranged in a circular array on the outer surface of the rotating rod 11 rotate accordingly. Rubber pads fixedly installed on the outer periphery of the stirring plates 12 contact the inner wall of the housing 2. This prevents exhaust gas from leaking through the gaps between the stirring plates 12 and the inner wall of the housing 2 during the stirring process. The included angle between every two stirring plates 12 is 45°. When exhaust gas enters from the top pipe, it enters the space between two stirring plates 12 and the inner wall of the housing 2, rotates slowly, and then the stirring plates 12 rotate again, causing the exhaust gas to fall. This intermittent and time-differentiated fall of the exhaust gas facilitates full contact with the purification and filtration media before being discharged, thus ensuring maximum removal of harmful substances.
[0048] Reference Figure 4It is known that a diversion plate 22 is fixedly installed between the two sides of the inner wall at the top of the box 2. The diversion plate 22 is provided with multiple openings. A discharge cylinder 14 is provided on one side of the box 2. A cooler 27 is fixedly installed on one side of the discharge cylinder 14. The air outlet of the cooler 27 extends into the discharge cylinder 14.
[0049] The pretreated exhaust gas enters the housing 2 through a pipe. A diversion plate 22 is fixedly installed between the two sides of the inner wall at the top of the housing 2, and multiple openings on it evenly distribute the exhaust gas.
[0050] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A lithium battery negative electrode tar incineration and purification device, characterized in that, include: Incinerator body (1) and box (2); A pretreatment box (3) is installed on one side of the box body (2). The bottom of the pretreatment box (3) has an opening, and a detachable cover (31) is installed at the opening. A metal filter plate (4) for removing large particulate impurities in the exhaust gas is detachably installed inside the pretreatment box (3). The metal filter plate (4) is vertically arranged. A first long rod (5) is rotatably installed between the two sides of the inner wall of the pretreatment box (3). One end of the first long rod (5) passes through the pretreatment box (3) and the metal filter plate (4) and extends into the box body (2). Two cleaning brushes (51) are fixedly installed on the outer surface of the first long rod (5) for cleaning the front and back sides of the metal filter plate (4). The pretreatment box (3) is connected to the incinerator body (1) through a pipe. Purification device (6), which is slidably installed between the two sides of the inner wall of the box (2), is used to decompose and transform harmful substances in the exhaust gas. The first long rod (5) extends through the box (2) into its interior and is located directly below the purification device (6). Two first circular plates (52) are fixedly sleeved on the outer surface of the first long rod (5). The center of the first circular plate (52) is offset from the center of the first long rod (5). A drive motor (9) is fixedly installed on one side of the pretreatment box (3), and its output end is fixedly connected to one end of the first long rod (5). A first gear (10) is fixedly sleeved on the outer surface of the first long rod (5). Multiple cleaning roller brushes (15) are rotatably installed between the two sides of the inner wall of the box (2). One end of each cleaning roller brush (15) penetrates the box (2) and extends to its outside. A small gear (16) is fixedly installed on one end of each cleaning roller brush (15). The multiple small gears (16) mesh with each other. The first gear (10) meshes with one of the small gears (16). Two filter fan blades (17) are rotatably installed between the two sides of the inner wall of the box (2). A second gear (23) is fixedly installed on one end of each filter fan blade (17). The two second gears (23) mesh. One end of the first long rod (5) and one side of one of the second gears (23) are fixedly installed with pulleys (24). The two pulleys (24) are connected by belt drive. A connecting pipe (25) is fixedly inserted on the box (2). Both ends of the pipe are inserted into the box (2). One end is located above the purification device (6), and the other end is located below it. A suction pump (26) is fixedly connected between the box (2) and the pretreatment box (3). A pipe (251) is connected between the box (2) and the pretreatment box (3), and an electromagnetic valve is provided on the pipe (251); The purification device (6) includes a purification box (61) that is slidably installed between the two sides of the inner wall of the box (2). The top of the purification box (61) is provided with an opening. The purification box (61) is provided with a plurality of chemical adsorption elements (7) and a plurality of catalytic devices (8). The plurality of chemical adsorption elements (7) and the plurality of catalytic devices (8) are arranged alternately in the upper and lower parts of the purification box (61). The chemical adsorption elements (7) include zeolite molecular sieves (71) and silica gel (72). The zeolite molecular sieves (71) are fixedly installed between the two sides of the inner wall of the purification box (61). Silica gel (72) is laid below the zeolite molecular sieves (71). The first circular plate (52) abuts against the purification device (6).
2. The lithium battery negative electrode tar incineration and purification device according to claim 1, characterized in that: The catalytic device (8) includes a precious metal honeycomb catalyst block (81) fixedly installed between the two sides of the inner wall of the purification box (61).
3. The lithium battery negative electrode tar incineration and purification device according to claim 1, characterized in that: A spray head (18) is fixedly inserted on one side of the pretreatment box (3), which is connected to the liquid storage tank through a pipe, and an electromagnetic valve is provided on the sealing cover (31).
4. The lithium battery negative electrode tar incineration and purification device according to claim 1, characterized in that: Both the pretreatment box (3) and the sealing cover (31) are equipped with slots, and the outer periphery of the metal filter plate (4) is engaged in the slots.
5. The lithium battery negative electrode tar incineration and purification device according to claim 1, characterized in that: A first semi-threaded rod (19) is fixedly installed on one side of the pretreatment box (3), and a second semi-threaded rod (20) is provided on the closed cover (31). A threaded cylinder (21) is threaded between the first semi-threaded rod (19) and the second semi-threaded rod (20).
6. The lithium battery negative electrode tar incineration and purification device according to claim 1, characterized in that: A rotating rod (11) is rotatably installed between the two sides of the inner wall of the box (2). Multiple stirring plates (12) are fixedly installed in a ring array on the outer surface of the rotating rod (11). The stirring plates (12) are arc-shaped. A rubber pad is fixedly installed on the outer periphery of the stirring plate (12), which contacts the inner wall of the box (2). A rotating motor (13) for driving the rotating rod (11) to rotate is installed on the box (2).
7. The lithium battery negative electrode tar incineration and purification device according to claim 1, characterized in that: A diversion plate (22) is fixedly installed between the two sides of the inner wall at the top of the box (2). The diversion plate (22) has multiple openings. A discharge cylinder (14) is provided on one side of the box (2). A cooler (27) is fixedly installed on one side of the discharge cylinder (14). The outlet of the cooler (27) extends into the discharge cylinder (14).