Lithium battery crusher

Abstract

The utility model relates to the technical field of lithium battery crushing, and discloses a lithium battery crusher which comprises a crushing bin, a driving device is fixedly installed on the right side of the crushing bin, the upper portion of the crushing bin is communicated with a storage bin, an opening and closing device is arranged in the storage bin, the upper portion of the storage bin is communicated with a feeding port, and the upper portion of the feeding port is communicated with a discharging port. And a discharging device is arranged in the feeding opening, a cover plate is arranged at the top of the feeding opening, and a nitrogen inlet and a water inlet are formed in the front side of the upper end of the crushing bin. The crushing bin adopts double-layer fire extinguishing of nitrogen and an induction water nozzle, so that the flammability of materials is reduced, and the safety is improved; the explosion venting valve is adopted in the crushing area, so that the explosion phenomenon of materials in the crushing area is avoided, the safety of workers is improved, the safety of the working environment and the safety of the workers are improved, and damage to equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery crushing, in particular to a lithium battery crusher. Background Art

[0002] With the increasing application of lithium batteries, the recycling of waste lithium batteries has become an issue that cannot be ignored. Waste lithium batteries have gradually become a hot topic in the field of resource recovery because they contain a variety of valuable metal components. In actual operation, when the waste lithium-ion batteries are charged and crushed, the waste lithium-ion battery crushed materials will generate heat, open flames or even explode during the crushing process, thereby causing safety hazards, which may endanger the health and safety of operators in serious cases. Therefore, the crushing of lithium batteries in the current production process is mostly carried out after discharge. The conventional discharge method is generally soaking in salt water or pinhole discharge. The time cycle consumed by the method of soaking and discharging in salt water is long, generally 5-7 days, and it is impossible to confirm whether the lithium battery is fully discharged. The risk in actual use is relatively large. The more important obstacle is that with the development of electric vehicles, the leakage protection level of lithium batteries is constantly improving. Ordinary salt water soaking can no longer destroy the leakage protection system of lithium batteries, and the operational applicability of soaking discharge is getting lower and lower. During pinhole discharge, a steel needle needs to penetrate the lithium battery shell to short-circuit the positive and negative poles of the battery. This method has a great risk of explosion. At present, almost no manufacturer uses the discharge method of steel needle penetration. In order to solve the above problems, this utility model patent provides a lithium battery crusher. The crushing area adopts nitrogen and induction water nozzle double-layer fire extinguishing, which reduces the flammability of the material and improves safety. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a lithium battery crusher.

[0005] (II) Technical solution

[0006] To solve the above problems, the utility model provides the following technical solutions: a lithium battery crusher, comprising a crushing bin, a driving device is fixedly installed on the right side of the crushing bin, a storage bin is connected to the top of the crushing bin, an opening and closing device is arranged inside the storage bin, a feeding port is connected to the top of the storage bin, a feeding device is arranged inside the feeding port, a cover plate is arranged on the top of the feeding port, and a nitrogen inlet and a water inlet are arranged on the front side of the upper end of the crushing bin.

[0007] Preferably, an air extraction valve is provided on the left side of the upper end of the crushing bin, and a spring-loaded self-closing explosion relief valve is provided on the right side of the upper end of the crushing bin.

[0008] Preferably, the unloading device comprises two baffles, which are rotatably connected to the inner wall of the feeding port respectively, the two baffles are arranged to be inclined downward, and a spring is arranged between the bottom of the baffle and the inner wall of the feeding port.

[0009] Preferably, the opening and closing device includes two groups of sealing devices, and the two groups of sealing devices are fixedly installed on both sides of the connection between the inner walls of the storage bin and the crushing bin. The two groups of sealing devices are slidably connected with closing plates inside, and the closing plates are controlled to retract and retract by cylinders. The inner sides of the two groups of closing plates are respectively provided with grooves and protrusions, and the grooves and protrusions are adapted to each other.

[0010] Preferably, a fire extinguishing induction nozzle is provided below the sealing device, the fire extinguishing induction nozzle is connected to the water inlet, and the fire extinguishing induction nozzle is located at the top inside the crushing bin.

[0011] Preferably, the bottom of the crushing bin is supported by two groups of supporting legs.

[0012] Preferably, a collecting bin is fixedly connected to a discharge port below the crushing bin, a control valve is provided on the collecting bin, and a conveying vehicle is provided below the discharge port of the collecting bin.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a lithium battery crusher, which has the following beneficial effects:

[0015] 1. The crushing chamber of this lithium battery crusher adopts nitrogen and induction water nozzle double-layer fire extinguishing, which reduces the flammability of materials and improves safety; the explosion relief valve is used in the crushing area to prevent the explosion of materials in the crushing area, improve the safety of workers, improve the working environment and the safety of workers, and reduce damage to equipment.

[0016] 2. The lithium battery crusher has a storage bin, a crushing bin, a collecting bin, etc. that are always in a closed state, which reduces the entry of oxygen. When crushing, the storage bin and the crushing bin are closed alternately, which reduces the entry of oxygen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a lithium battery crusher of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the opening and closing device of the utility model.

[0019] In the figure: 1 cover plate, 2 feeding port, 21 baffle, 22 spring, 3 storage bin, 4 nitrogen inlet, 5 water inlet, 6 air extraction valve, 7 crushing bin, 8 collecting bin, 9 supporting leg, 10 conveyor vehicle, 11 control valve, 12 spring-loaded self-closing explosion relief valve, 13 driving device, 14 sealing device, 141 closing plate, 142 groove, 143 protrusion, 15 fire extinguishing induction nozzle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 2 The utility model provides a new technical solution: a lithium battery crusher, including a crushing bin 7, a crushing mechanism (not shown in the figure) is arranged inside the crushing bin 7, and the lithium battery can be crushed. A driving device 13 is fixedly installed on the right side of the crushing bin 7, and the driving device 13 provides power for the crushing mechanism inside the crushing bin 7. The upper part of the crushing bin 7 is connected to a storage bin 3, and an opening and closing device is arranged inside the storage bin 3. The upper part of the storage bin 3 is connected to a feeding port 2, and the material enters the storage bin 3 through the feeding port 2. The feeding port 2 is provided with a feeding device, a cover plate 1 is provided on the top of the feeding port 2, the cover plate 1 can seal the feeding port 2 to prevent air from entering the feeding port 2, and a nitrogen inlet 4 and a water inlet 5 are provided on the front side of the upper end of the crushing bin 7; nitrogen can be injected into the crushing bin 7 through the nitrogen inlet 4 to reduce the flammability of the lithium battery during the crushing process, and water can be added to the water inlet 5 through the water inlet 5. Once combustion occurs in the crushing bin 7, water can be injected into the crushing bin 7 through the water inlet 5 and sprayed out through the nozzle to achieve the purpose of fire extinguishing.

[0022] In this embodiment, an air extraction valve 6 is provided on the left side of the upper end of the crushing bin 7. The air extraction valve 6 is connected to a vacuum pump to evacuate the air inside the crushing bin 7, so that the crushing is in a negative pressure state, and the flammability during the crushing process is reduced. A spring-loaded self-closing explosion relief valve 12 is provided on the right side of the upper end of the crushing bin 7. When a fire breaks out inside the crushing bin 7, and the fire is large, and nitrogen and water spray cannot extinguish the fire, the pressure inside the closed crushing bin 7 gradually increases with the temperature. When the pressure inside the crushing bin 7 reaches a certain value, the spring-loaded self-closing explosion relief valve 12 automatically opens to relieve pressure to avoid explosion. After the pressure is relieved, the spring-loaded self-closing explosion relief valve 12 automatically returns to the normal position to seal the space.

[0023] In this embodiment, the unloading device includes two baffles 21, and the two baffles 21 are rotatably connected on the inner wall of the feeding port 2, respectively. The two baffles 21 are arranged to be tilted downward, and a spring 22 is arranged between the bottom of the baffle 21 and the inner wall of the feeding port 2; when in use, the cover 1 is opened, and the lithium batteries to be crushed are added from the feeding port 2 to the storage bin 3. Under the action of the gravity of the lithium battery itself, the baffle 21 rotates and compresses the spring 22. After the addition is completed, the baffle 21 is reset under the action of the elastic force of the spring 22, so that the feeding port 2 is in a closed state.

[0024] In this embodiment, the opening and closing device includes two groups of sealing devices 14, and the two groups of 14 are fixedly installed on both sides of the connection between the inner walls of the storage bin 3 and the crushing bin 7. The two groups of sealing devices 14 are slidably connected with closing plates 141 inside, and the closing plates 141 are controlled to retract and extend by cylinders. The inner sides of the two groups of closing plates 141 are respectively provided with grooves 142 and protrusions 143, and the grooves 142 and protrusions 143 are adapted to each other; when in use, the two closing plates 141 are controlled to retract and extend by the cylinder, so that the crushing bin 7 and the storage bin 3 can be in a closed or open state.

[0025] Furthermore, a fire extinguishing sensing nozzle 15 is provided below the sealing device 14, and the fire extinguishing sensing nozzle 15 is connected to the water inlet 5. The fire extinguishing sensing nozzle 15 is located at the top of the crushing bin 7; when combustion occurs inside the crushing bin 7, the fire extinguishing sensing nozzle 15 will automatically spray water through sensor induction to extinguish the fire.

[0026] Furthermore, the bottom of the crushing bin 7 is supported by two groups of supporting legs 9 .

[0027] In this embodiment, the lower discharge port of the crushing bin 7 is fixedly connected to the collecting bin 8, a control valve 11 is provided on the collecting bin 8, and a conveying vehicle 10 is provided below the discharge port of the collecting bin 8; when in use, the control valve 11 is opened, and the crushed lithium batteries fall into the conveying vehicle 10 through the collecting bin 8 and are transported to the next step.

[0028] Working principle: When the lithium battery crusher is in use, first open the cover plate 1, add the waste lithium batteries into the storage bin 3 from the feeding port 2, open the closing plate 141, and the waste lithium batteries in the storage bin 3 fall into the crushing bin 7, then close the closing plate 141, connect the vacuum pump through the exhaust valve 6 to extract the internal gas of the crushing bin 7, and then inject nitrogen into the crushing bin 7 through the nitrogen inlet 4 to reduce the flammability of the lithium battery, and then start the driving device 13, and drive the crushing mechanism inside the crushing bin 7 through the driving device 13 to crush the waste lithium batteries. During the crushing process, if there is combustion inside the crushing bin 7, the fire extinguishing sensing nozzle 15 will automatically spray water through sensor sensing to extinguish the fire. When the fire is large and nitrogen and water spraying cannot extinguish the fire, the pressure in the closed crushing bin 7 gradually increases with the temperature. When the pressure in the crushing bin 7 reaches a certain value, the spring-loaded self-closing explosion relief valve 12 automatically opens to relieve pressure to avoid explosion. After the pressure is relieved, the spring-loaded self-closing explosion relief valve 12 automatically returns to the original position to seal the space. After the crushing is completed, the control valve 11 is opened, and the crushed lithium batteries fall into the conveying vehicle 10 through the collection bin 8 and are transported to the next step.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery crusher, comprising a crushing chamber (7), characterized in that: A driving device (13) is fixedly installed on the right side of the crushing bin (7); a storage bin (3) is connected to the top of the crushing bin (7); an opening and closing device is arranged inside the storage bin (3); a feeding port (2) is connected to the top of the storage bin (3); a feeding device is arranged inside the feeding port (2); a cover plate (1) is arranged on the top of the feeding port (2); and a nitrogen inlet (4) and a water inlet (5) are arranged on the front side of the upper end of the crushing bin (7).

2. A lithium battery crusher according to claim 1, characterized in that: An air extraction valve (6) is arranged on the left side of the upper end of the crushing chamber (7), and a spring-loaded self-closing explosion relief valve (12) is arranged on the right side of the upper end of the crushing chamber (7).

3. A lithium battery crusher according to claim 1, characterized in that: The unloading device comprises two baffles (21), the two baffles (21) are rotatably connected on the inner wall of the feeding port (2), the two baffles (21) are arranged to be inclined downward, and a spring (22) is arranged between the bottom of the baffle (21) and the inner wall of the feeding port (2).

4. A lithium battery crusher according to claim 1, characterized in that: The opening and closing device comprises two groups of sealing devices (14), the two groups of sealing devices (14) are fixedly installed on both sides of the connection between the inner walls of the storage bin (3) and the crushing bin (7), and the two groups of sealing devices (14) are slidably connected with a closing plate (141) inside, and the closing plate (141) is controlled to extend and retract by a cylinder, and the inner sides of the two groups of closing plates (141) are respectively provided with a groove (142) and a protrusion (143), and the groove (142) and the protrusion (143) are adapted to each other.

5. A lithium battery crusher according to claim 4, characterized in that: A fire extinguishing induction nozzle (15) is arranged below the sealing device (14), the fire extinguishing induction nozzle (15) is connected to the water inlet (5), and the fire extinguishing induction nozzle (15) is located at the top inside the crushing bin (7).

6. A lithium battery crusher according to claim 1, characterized in that: The bottom of the crushing bin (7) is supported by two groups of supporting legs (9).

7. A lithium battery crusher according to claim 1, characterized in that: The lower discharge port of the crushing bin (7) is fixedly connected to a collecting bin (8), a control valve (11) is provided on the collecting bin (8), and a conveying vehicle (10) is provided below the discharge port of the collecting bin (8).

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