A waste battery pack breaking device

Abstract

The utility model discloses a kind of waste battery package crushing devices, it is related to waste battery package processing technical field.The utility model includes crushing jar, the side of crushing jar is provided with crushing mechanism, the output end of crushing mechanism is provided with intermittent transmission mechanism, crushing jar feed end is provided with turnover feeding mechanism, the side of crushing jar is provided with toxic gas exhaust mechanism.The utility model drives intermittent transmission mechanism rotation by crushing mechanism, makes intermittent transmission mechanism drive the intermittent rotation of the feed end of turnover feeding mechanism, to waste battery package is automatically sent into crushing jar inside, simultaneously, the toxic gas that the feed end of turnover feeding mechanism is wrapped around when its purification end overturn is purified in time;This integrated feeding and purification mechanism, realize the sealing operation in continuous feeding process, effectively inhibit toxic gas leakage, avoid the harm of harmful gas leakage to staff health caused by traditional opening feeding door.

Description

Technical Field

[0001] This utility model belongs to the field of waste battery pack processing technology, and specifically relates to a waste battery pack crushing device. Background Technology

[0002] Waste battery pack crushing equipment is a key piece of equipment specifically designed for processing waste battery packs. Its core function is to break down waste battery packs into fragments that are easy to process later through an orderly crushing process. The equipment usually places the pre-disassembled battery packs into the crushing chamber and uses the shearing and impact of the crushing mechanism to crush the internal components such as battery cells into materials of appropriate particle size.

[0003] According to a new energy battery recycling crushing and screening device disclosed in Chinese Patent Publication No. CN222642133U, starting the motor drives the shaft to rotate, causing the rollers to rotate synchronously, which in turn drives the fixed ring to move. The screening cylinder starts to rotate under the influence of the fixed ring, and various impurities fall into the collection box through the filter holes, thus achieving the screening of raw materials.

[0004] However, the aforementioned devices, combined with existing waste battery pack crushing equipment, all have drawbacks. During the crushing process, the mechanical force damages the battery casing and internal structure, releasing active substances such as electrolyte and electrode materials. The heat and physical impact during crushing further cause the organic solvents in the electrolyte to decompose upon heating, releasing toxic gases such as hydrogen fluoride and carbon monoxide. Therefore, the crushing equipment needs to be sealed. However, the crushing mechanism takes time to crush waste battery packs. If all the waste battery packs are piled up in the crushing mechanism, it will cause blockage. Therefore, the crushing mechanism needs to be continuously fed. When adding more waste battery packs to the crushing equipment, the feed door needs to be opened, which will cause toxic gases to leak from the crushing equipment. These leaked toxic gases will affect the health of the workers and pose a significant hazard. Utility Model Content

[0005] In response to the problem that in existing technologies, when adding waste battery packs to crushing equipment, the feed door needs to be opened, which can lead to the leakage of toxic gases from the crushing equipment and affect the health of workers, this utility model proposes a waste battery pack crushing device to overcome the above-mentioned technical problems in existing technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a waste battery pack crushing device, including a crushing tank, a crushing mechanism on one side of the crushing tank, an intermittent transmission mechanism at the output end of the crushing mechanism, a tilting feeding mechanism at the feed end of the crushing tank, and a toxic gas discharge mechanism on one side of the crushing tank.

[0008] While the crushing mechanism crushes the waste battery packs, it drives the transmission end of the intermittent transmission mechanism to rotate, so that the intermittent transmission mechanism drives the feeding end of the flipping feeding mechanism to rotate intermittently, causing the feeding end to drive the waste battery packs to rotate into the crushing tank.

[0009] Furthermore, the crushing mechanism includes a motor, which is fixedly installed on one side of the crushing tank. The output shaft of the motor is fixedly connected to a gear, and a gear is meshed on the surface of the gear. Two crushing rollers are fixedly connected to one end of both the gear and the gear. The two crushing rollers are rotatably connected inside the crushing tank, and their surfaces mesh with each other. A discharge box is slidably connected to one end of the crushing tank.

[0010] Furthermore, the intermittent transmission mechanism includes a third gear, which is fixedly connected to one end of one of the crushing rollers. A chain meshes on the surface of the third gear, and a fourth gear meshes inside the chain. A dial is fixedly connected to one end of the fourth gear, and the dial is rotatably connected to one side of the crushing tank. A grooved wheel meshes on the surface of the dial, and the grooved wheel is rotatably connected to one side of the crushing tank.

[0011] Furthermore, the tipping feeding mechanism includes a feeding frame with an isolation cavity inside. The feeding frame is fixedly connected to the feeding end of the crushing tank. A cross plate is rotatably connected inside the feeding frame. The cross plate is located inside the isolation cavity. Several sealing strips are fixedly connected to the surface of the cross plate, and the sealing strips are in contact with the inner wall of the feeding frame.

[0012] Furthermore, a filter screen is fixedly connected inside the feeding rack, an exhaust pipe is fixedly connected to one end of the feeding rack, a fan is fixedly installed at one end of the exhaust pipe, the exhaust pipe is fixedly connected to the filter screen, and the exhaust pipe is connected to the isolation chamber.

[0013] Furthermore, a purification pipe is fixedly connected inside the feeding rack, one end of the purification pipe is connected to the isolation chamber, a second fan is fixedly installed at the other end of the purification pipe, and an activated carbon purification block is fixedly installed inside the purification pipe.

[0014] Furthermore, the toxic gas discharge mechanism includes a nitrogen pipe, which is fixedly connected to one end of the crushing tank. A toxic gas pipe is also fixedly connected to one end of the crushing tank. One end of the toxic gas pipe is fixedly connected to the middle of the purification pipe. A support frame is fixedly connected to the surface of the toxic gas pipe and the purification pipe. A partition plate is slidably connected inside the support frame. Both ends of the partition plate are slidably connected to the toxic gas pipe and the purification pipe. A fixing bolt is threadedly connected to the middle of the partition plate.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model drives the intermittent transmission mechanism to rotate through the crushing mechanism, which in turn drives the feed end of the tipping feed mechanism to rotate intermittently, thereby automatically feeding the waste battery pack into the crushing tank. At the same time, the purification end of the tipping feed mechanism immediately purifies the toxic gases carried by the feed end during tipping. This integrated feeding and purification mechanism realizes sealed operation during continuous feeding, effectively suppresses the leakage of toxic gases, and avoids the health hazards to workers caused by the leakage of harmful gases caused by the traditional opening of the feed door.

[0017] 2. This utility model allows the partition plate to slide within the support frame by loosening the fixing bolts. Simultaneously, one end of the partition plate blocks the purification pipe, while the other end opens the toxic gas pipe. At this time, the second blower thoroughly purifies and discharges the residual toxic gas in the crushing tank through the toxic gas pipe, creating a negative pressure inside the tank. Subsequently, nitrogen is injected through the nitrogen pipe to release the negative pressure, and finally, the battery fragments are safely slid out of the discharge box. This process effectively prevents the leakage of toxic gas during material handling from harming the health of operators through the dual protection of negative pressure purification and nitrogen replacement.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a side view of the present invention.

[0022] Figure 3 This is a cross-sectional structural diagram of the tilting feeding mechanism of this utility model;

[0023] Figure 4This is a schematic diagram of the connection structure between the intermittent transmission mechanism and the crushing mechanism of this utility model;

[0024] Figure 5 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0025] Figure 6 For the present utility model Figure 3 Enlarged structural diagram at point B.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Crushing tank; 2. Crushing mechanism; 201. Motor; 202. Gear 1; 203. Gear 2; 204. Crushing roller; 205. Discharge box; 3. Intermittent transmission mechanism; 301. Gear 3; 302. Chain; 303. Gear 4; 304. Dial; 305. Grooved wheel; 4. Tilting feeding mechanism; 401. Feed rack; 402. Isolation chamber; 403. Cross plate; 404. Sealing strip; 405. Filter screen; 406. Exhaust pipe; 407. Fan 1; 408. Purification pipe; 409. Fan 2; 410. Activated carbon purification block; 5. Toxic gas discharge mechanism; 501. Nitrogen pipe; 502. Toxic gas pipe; 503. Support frame; 504. Divider plate; 505. Fixing bolts. Detailed Implementation

[0028] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0029] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0030] Please see Figures 1-6 As shown, this utility model is a waste battery pack crushing device, including a crushing tank 1, a crushing mechanism 2 is provided on one side of the crushing tank 1, an intermittent transmission mechanism 3 is provided at the output end of the crushing mechanism 2, a flipping feeding mechanism 4 is provided at the feeding end of the crushing tank 1, and a toxic gas discharge mechanism 5 is provided on one side of the crushing tank 1.

[0031] While the waste battery pack is being crushed by the crushing mechanism 2, the transmission end of the intermittent transmission mechanism 3 is driven to rotate, so that the intermittent transmission mechanism 3 drives the feeding end of the flipping feeding mechanism 4 to rotate intermittently, so that the feeding end drives the waste battery pack to rotate into the crushing tank 1.

[0032] By placing the waste battery pack at the feeding end of the tipping feeding mechanism 4, the crushing mechanism 2 is started to drive the intermittent transmission mechanism 3 to rotate intermittently. This causes the intermittent transmission mechanism 3 to drive the feeding end of the tipping feeding mechanism 4 to rotate intermittently, thereby driving the waste battery pack to rotate into the crushing tank 1. At the same time, the purification end of the tipping feeding mechanism 4 purifies the toxic gas carried during the tipping of the feeding end, suppressing the leakage of toxic gas. After crushing, the toxic gas is purified and discharged through the toxic gas discharge mechanism 5 before the material is taken out.

[0033] The crushing mechanism 2 drives the intermittent transmission mechanism 3 to rotate, which in turn drives the feed end of the tilting feed mechanism 4 to rotate intermittently, thereby automatically feeding the waste battery pack into the crushing tank 1. At the same time, the purification end of the tilting feed mechanism 4 purifies the toxic gas carried by the feed end during the tilting process. This integrated feeding and purification mechanism realizes the sealed operation during the continuous feeding process, effectively suppresses the leakage of toxic gas, and avoids the health hazards to workers caused by the leakage of harmful gases caused by the traditional opening of the feed door.

[0034] In one embodiment, the crushing mechanism 2 includes a motor 201, which is fixedly installed on one side of the crushing tank 1. The output shaft of the motor 201 is fixedly connected to a gear 202. A gear 203 meshes with the surface of the gear 202. Two crushing rollers 204 are fixedly connected to one end of both the gear 202 and the gear 203. The two crushing rollers 204 are rotatably connected inside the crushing tank 1, and their surfaces mesh with each other. A discharge box 205 is slidably connected to one end of the crushing tank 1.

[0035] When the battery pack, after initial disassembly, reaches the inside of the crushing tank 1, the motor 201 is started, causing the motor 201 to drive the gear 1 202 to rotate, which in turn drives the gear 2 203 to rotate synchronously. This causes the two crushing rollers 204 to rotate in opposite directions, crushing the battery pack. The crushed battery pack fragments then fall into the discharge box 205. When discharging, the discharge box 205 is slid out to pour out the battery pack fragments.

[0036] In one embodiment, the intermittent transmission mechanism 3 includes a gear 301, which is fixedly connected to one end of one of the crushing rollers 204. A chain 302 is meshed on the surface of the gear 301, and a gear 4 303 is meshed inside the chain 302. A dial 304 is fixedly connected to one end of the gear 4 303. The dial 304 is rotatably connected to one side of the crushing tank 1, and a grooved wheel 305 is meshed on the surface of the dial 304. The grooved wheel 305 is rotatably connected to one side of the crushing tank 1.

[0037] When the battery pack is crushed by the crushing roller 204, the drive gear 301 rotates synchronously, which drives the gear 4 303 to rotate through the chain 302. The gear 4 303 drives the dial 304 to rotate, which in turn drives the grooved wheel 305 to rotate intermittently.

[0038] The working principle and process of the dial 304 driving the intermittent rotation of the grooved wheel 305 are as follows: The dial 304 rotates continuously at a constant angular velocity. When the pin on the dial 304 has not entered the radial groove of the grooved wheel 305, the grooved wheel 305 remains stationary because the inner concave locking arc of the grooved wheel 305 is locked by the outer concave locking arc of the dial 304. When the pin of the dial 304 just enters the radial groove of the grooved wheel 305, the locking arc of the dial 304 is just released. After that, the grooved wheel 305 rotates under the drive of the pin. When the pin leaves the radial groove on the other side, the locking arc is locked again, and the grooved wheel 305 remains stationary until the pin enters the other radial groove of the grooved wheel 305 again, and the above movement is repeated. Therefore, the grooved wheel 305 has an intermittent motion that moves and stops at different times. The unidirectional intermittent motion mechanism it constitutes is also called a Maltese mechanism.

[0039] In one embodiment, the aforementioned tilting feeding mechanism 4 includes a feeding frame 401, with an isolation cavity 402 inside. The feeding frame 401 is fixedly connected to the feeding end of the crushing tank 1. A cross plate 403 is rotatably connected inside the feeding frame 401, located inside the isolation cavity 402. Several sealing strips 404 are fixedly connected to the surface of the cross plate 403, and the sealing strips 404 contact the inner wall of the feeding frame 401. A filter screen 405 is fixedly connected to one end of the feed rack 401. An exhaust pipe 406 is fixedly connected to one end of the exhaust pipe 406. A fan 407 is fixedly installed at one end of the exhaust pipe 406. The exhaust pipe 406 is fixedly connected to the filter screen 405 and to the isolation chamber 402. A purification pipe 408 is fixedly connected inside the feed rack 401. One end of the purification pipe 408 is connected to the isolation chamber 402. A fan 409 is fixedly installed at one end of the purification pipe 408. An activated carbon purification block 410 is fixedly installed inside the purification pipe 408.

[0040] The cross plate 403 is driven by the grooved wheel 305 to move intermittently within the isolation chamber 402, providing time for material unloading. The battery pack is placed on the surface of the cross plate 403. When the cross plate 403 rotates, it drives the battery pack to rotate synchronously into the isolation chamber 402. During the rotation, the cross plate 403 drives the sealing strip 404 to rotate synchronously, thus separating the isolation chamber 402 and sealing it with the sealing strip 404. By starting the blower 407, the blower 407 expels air from the isolation chamber 402 containing the cross plate 403 through the exhaust pipe 406. The filter screen 405 prevents the battery pack from being sucked out. Then, the cross plate 403 is rotated to send the battery pack into the crushing tank 1. This step is to prevent oxygen in the air from entering the crushing tank 1. During the rotation of the cross plate 403, the toxic gas generated during the crushing inside the crushing tank 1 will be trapped in the separation between the cross plate 403 and the isolation chamber 402. At this time, the second fan 409 is started, so that the second fan 409 discharges the toxic gas through the purification pipe 408. At the same time, the toxic gas is purified by the activated carbon purification block 410 to meet the emission standards, thereby completing the sealed feeding of the battery pack.

[0041] In one embodiment, the toxic gas discharge mechanism 5 includes a nitrogen pipe 501, which is fixedly connected to one end of the crushing tank 1. A toxic gas pipe 502 is also fixedly connected to one end of the crushing tank 1. One end of the toxic gas pipe 502 is fixedly connected to the middle of the purification pipe 408. A support frame 503 is fixedly connected to the surface of the toxic gas pipe 502 and the purification pipe 408. A partition plate 504 is slidably connected inside the support frame 503. Both ends of the partition plate 504 are slidably connected to the toxic gas pipe 502 and the purification pipe 408. A fixing bolt 505 is threadedly connected to the middle of the partition plate 504.

[0042] After the battery pack is completely crushed, to remove it, first loosen the fixing bolt 505, causing the fixing bolt 505 to drive the partition plate 504 to slide inside the support frame 503. This causes one end of the partition plate 504 to block the purification pipe 408, while the other end of the partition plate 504 opens and connects to the toxic gas pipe 502. The second blower 409 then purifies and discharges all the toxic gases in the crushing tank 1 through the toxic gas pipe 502. At this time, the inside of the crushing tank 1 is under negative pressure. Then, connect the nitrogen pipe 501 to the nitrogen equipment to deliver nitrogen into the crushing tank 1, thus releasing the negative pressure inside the crushing tank 1. Finally, slide out the discharge box 205 to pour out the battery pack fragments.

[0043] Furthermore, nitrogen is slowly introduced into the tank through a dedicated pipeline, gradually balancing the negative pressure inside by utilizing the stability of nitrogen, while avoiding the introduction of air that could react with residual toxic gases. The core reason why nitrogen does not react with harmful gases produced by the breakage of used battery packs lies in its stable chemical properties. A nitrogen molecule is formed by two nitrogen atoms bonded together by three pairs of shared electrons, creating an extremely strong covalent bond, far exceeding the bond energy of most common chemical bonds. This strong chemical bond makes nitrogen extremely difficult to react chemically at room temperature and pressure; it does not readily neutralize acidic gases such as hydrogen fluoride, nor does it undergo redox reactions with reducing gases such as carbon monoxide. This characteristic allows for safe pressure regulation during the balancing process without reacting with residual harmful gases to generate new harmful substances, thus ensuring the safety and stability of the operation.

[0044] Through the above technical solution, 1. By placing the battery pack on the surface of the cross plate 403, starting the motor 201, the motor 201 drives gear one 202 to rotate, which in turn drives gear two 203 to rotate synchronously, thereby driving the two crushing rollers 204 to rotate crosswise. The crushing rollers 204 drive gear three 301 to rotate synchronously, which in turn drives gear four 303 to rotate via chain 302. Gear four 303 drives the dial 304 to rotate, which in turn drives the grooved wheel 305 to rotate intermittently. When the cross plate 403 rotates, it drives the battery pack to rotate synchronously, causing the battery pack to rotate into the isolation chamber 402. During the rotation, the cross plate 403 drives the sealing strip 404 to rotate synchronously, causing the cross plate 403 to separate the isolation chamber 402, which is then sealed by the sealing strip 404. By starting the fan one 407, the fan one 407 rotates synchronously. 7. Air is discharged from the isolation chamber 402 containing the cross plate 403 with the battery pack through the exhaust pipe 406. The filter screen 405 prevents the battery pack from being sucked out. Then, the cross plate 403 is rotated to send the battery pack into the crushing tank 1. This step is to prevent oxygen in the air from entering the crushing tank 1. During the rotation of the cross plate 403, toxic gases generated during crushing inside the crushing tank 1 will be trapped in the separation between the cross plate 403 and the isolation chamber 402. At this time, the second blower 409 is started, so that the second blower 409 discharges the toxic gases through the purification pipe 408. At the same time, the toxic gases are purified by the activated carbon purification block 410 to meet the emission standards, thereby completing the sealed feeding of the battery pack. The two crushing rollers 204 rotate crosswise to crush the battery pack inside the crushing tank 1. Then, the crushed battery pack fragments fall into the discharge box 205.

[0045] 2. By loosening the fixing bolts 505, the partition plate 504 slides within the support frame 503. Simultaneously, one end of the partition plate 504 blocks the purification pipe 408, while the other end opens the toxic gas pipe 502. At this time, the blower 409 thoroughly purifies and discharges the residual toxic gas in the crushing tank 1 through the toxic gas pipe 502, creating a negative pressure inside the tank. Then, nitrogen is injected through the nitrogen pipe 501 to release the negative pressure, and finally, the battery fragments are safely slid out of the discharge box 205 to pour out. This process effectively prevents the leakage of toxic gas during material handling from harming the health of operators through the dual protection of negative pressure purification and nitrogen replacement.

[0046] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A waste battery pack crushing device, comprising a crushing tank (1), characterized in that, A crushing mechanism (2) is provided on one side of the crushing tank (1), an intermittent transmission mechanism (3) is provided at the output end of the crushing mechanism (2), a flipping feeding mechanism (4) is provided at the feed end of the crushing tank (1), and a toxic gas discharge mechanism (5) is provided on one side of the crushing tank (1). While the waste battery pack is being crushed by the crushing mechanism (2), the transmission end of the intermittent transmission mechanism (3) is driven to rotate, so that the intermittent transmission mechanism (3) drives the feeding end of the flipping feeding mechanism (4) to rotate intermittently, so that the feeding end drives the waste battery pack to rotate into the crushing tank (1).

2. The waste battery pack crushing device according to claim 1, characterized in that, The crushing mechanism (2) includes a motor (201), which is fixedly installed on one side of the crushing tank (1). The output shaft of the motor (201) is fixedly connected to a gear (202). A gear (203) meshes with the surface of the gear (202). Two crushing rollers (204) are fixedly connected to one end of both the gear (202) and the gear (203). The two crushing rollers (204) are rotatably connected inside the crushing tank (1). The surfaces of the two crushing rollers (204) mesh with each other. A discharge box (205) is slidably connected to one end of the crushing tank (1).

3. The waste battery pack crushing device according to claim 2, characterized in that, The intermittent transmission mechanism (3) includes a gear three (301), which is fixedly connected to one end of one of the crushing rollers (204). A chain (302) is meshed on the surface of the gear three (301), and a gear four (303) is meshed inside the chain (302). A dial (304) is fixedly connected to one end of the gear four (303), and the dial (304) is rotatably connected to one side of the crushing tank (1). A grooved wheel (305) is meshed on the surface of the dial (304), and the grooved wheel (305) is rotatably connected to one side of the crushing tank (1).

4. The waste battery pack crushing device according to claim 3, characterized in that, The flipping feeding mechanism (4) includes a feeding rack (401), an isolation chamber (402) is provided inside the feeding rack (401), the feeding rack (401) is fixedly connected to the feeding end of the crushing tank (1), a cross plate (403) is rotatably connected inside the feeding rack (401), the cross plate (403) is located inside the isolation chamber (402), and a plurality of sealing strips (404) are fixedly connected to the surface of the cross plate (403), and the plurality of sealing strips (404) are in contact with the inner wall of the feeding rack (401).

5. The waste battery pack crushing device according to claim 4, characterized in that, A filter screen (405) is fixedly connected inside the feed rack (401). An exhaust pipe (406) is fixedly connected to one end of the feed rack (401). A fan (407) is fixedly installed at one end of the exhaust pipe (406). The exhaust pipe (406) is fixedly connected to the filter screen (405) and to the isolation chamber (402).

6. The waste battery pack crushing device according to claim 5, characterized in that, A purification pipe (408) is fixedly connected inside the feed rack (401). One end of the purification pipe (408) is connected to the isolation chamber (402). A second fan (409) is fixedly installed at one end of the purification pipe (408). An activated carbon purification block (410) is fixedly installed inside the purification pipe (408).

7. The waste battery pack crushing device according to claim 6, characterized in that, The toxic gas discharge mechanism (5) includes a nitrogen pipe (501), which is fixedly connected to one end of the crushing tank (1). A toxic gas pipe (502) is also fixedly connected to one end of the crushing tank (1). One end of the toxic gas pipe (502) is fixedly connected to the middle of the purification pipe (408). A support frame (503) is fixedly connected to the surface of the toxic gas pipe (502) and the purification pipe (408). A partition plate (504) is slidably connected inside the support frame (503). Both ends of the partition plate (504) are slidably connected to the toxic gas pipe (502) and the purification pipe (408). A fixing bolt (505) is threadedly connected to the middle of the partition plate (504).

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