Lithium battery charged crushing system

Abstract

The lithium battery electrified crushing system comprises stirring equipment, a gate valve, crushing equipment and a discharger which are sequentially connected from top to bottom, a feeding hopper is arranged at the upper end of the stirring equipment, a discharging opening is formed in the lower end of the discharger, and the lithium battery electrified crushing system further comprises a dry ice injection opening which is used for adding dry ice into the stirring equipment. Dry ice is processed in stirring equipment, the dry ice and a battery are fully mixed and then enter a crushing cavity of crushing equipment to participate in crushing, a large amount of heat energy generated in the breaking process of the charged battery is rapidly absorbed by the dry ice, and therefore the chain reaction scale caused by short circuit is greatly reduced, and meanwhile the dry ice can be rapidly gasified into carbon dioxide after being heated; and oxygen isolation is formed, so that combustion is quickly weakened and disappears, and deflagration is not easy to generate.

Description

Technical Field

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

[0002] Existing lithium battery material crushing usually adopts physical demolition after discharging by soaking in salt water to eliminate residual electricity, or the crushing cavity is sealed and filled with inert gas (usually nitrogen) to physically demolish the scrapped lithium battery raw materials with a small amount of residual electricity. When the material is broken after soaking in salt water, there is a lot of water in the raw material, which is easy to bridge and harden in the cavity, and a large amount of heat is released during the demolition process, evaporating water, increasing the humidity in the cavity of the crushing equipment, and affecting the service life of the equipment. When the material is broken by filling with inert gas, it is impossible to confirm whether the raw material is completely discharged. Batteries with a large amount of electricity may still have a strong explosion during crushing. Although there is no safety hazard in the production, the sound is easy to shock the equipment operator psychologically and affect normal production. In order to solve the above-mentioned shortcomings of breaking after soaking in salt water and breaking by filling with inert gas, a system for breaking charged lithium batteries using dry ice is designed. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and provide a lithium battery live crushing system, by processing dry ice into a stirring device, so that the dry ice and the battery are fully mixed and then enter the crushing chamber of the crushing device to participate in crushing, a large amount of heat energy generated during the demolition of the live battery is quickly absorbed by the dry ice, thereby greatly reducing the scale of the chain reaction caused by the short circuit, and at the same time, the dry ice will quickly gasify into carbon dioxide when heated, forming an isolation of oxygen, so that the combustion is quickly weakened and disappears, and the crushing space is filled with inert gas, so that it is not easy to produce deflagration.

[0004] In order to realize the above-mentioned technical features, the purpose of the utility model is achieved as follows: a lithium battery live crushing system comprises a stirring device, a gate valve, a crushing device and a discharger connected in sequence from top to bottom, a feed hopper is provided at the upper end of the stirring device, a discharge port is provided at the lower end of the discharger, and also comprises a dry ice injection port, which is used to add dry ice into the stirring device.

[0005] In a preferred embodiment, the stirring equipment includes a stirring tank with a stirring part installed in the stirring tank, a fixed seat is provided in the middle of the feed hopper, the circumference of the fixed seat is connected to the feed hopper through at least three evenly distributed connecting plates, the motor is installed on the fixed seat, and the output shaft of the motor extends downward and is connected to the stirring part for transmission.

[0006] In a preferred solution, the gate valve is a double-layer gate valve.

[0007] In a preferred solution, the crushing equipment adopts a double-shaft crusher, or a single-shaft crusher, or a combination of a double-shaft crusher and a single-shaft crusher.

[0008] In a preferred solution, the discharger is a star-shaped discharger.

[0009] In a preferred embodiment, the dry ice injection port is a discharge port of a particle dry ice machine.

[0010] Furthermore, it also includes a feeding conveyor.

[0011] The utility model has the following beneficial effects:

[0012] 1. By processing dry ice into the mixing equipment, the dry ice and the battery are fully mixed and then enter the crushing chamber of the crushing equipment to participate in the crushing. The large amount of heat energy generated during the demolition of the charged battery is quickly absorbed by the dry ice, thereby greatly reducing the scale of the chain reaction caused by the short circuit. At the same time, the dry ice will quickly gasify into carbon dioxide when heated, forming an isolation of oxygen, so that the combustion will quickly weaken and disappear, making it less likely to produce a deflagration.

[0013] 2. The stirring part is driven by a motor to rotate, so as to fully mix the battery and dry ice in the stirring tank, so that the battery has a lower temperature before entering the crushing equipment, thereby improving the safety, stability and controllability of live demolition.

[0014] 3. The pellet dry ice machine produces pelletized dry ice or columnar solid dry ice, which is then put into the mixing device from the dry ice injection port. When using solid dry ice, the battery and dry ice mixture enters the crushing chamber of the crushing device, and the dry ice is not easy to leak out from the bottom screen of the crushing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] In the figure: stirring device 1, stirring tank 11, stirring part 12, motor 13, fixing seat 14, connecting plate 15, feeding hopper 16, gate valve 2, crushing device 3, discharger 4, discharge port 41, dry ice injection port 5, granular dry ice machine 6, feeding conveyor 7. DETAILED DESCRIPTION

[0017] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0018] See also Figure 1The lithium battery live crushing system includes a stirring device 1, a gate valve 2, a crushing device 3 and a discharger 4 connected in sequence from top to bottom. The upper end of the stirring device 1 is provided with a feed hopper 16, and the lower end of the discharger 4 is provided with a discharge port 41. It also includes a dry ice injection port 5, which is used to add dry ice into the stirring device 1. By processing dry ice into the stirring device 1, the dry ice and the battery are fully mixed and then enter the crushing cavity of the crushing device 3 to participate in crushing. A large amount of heat energy generated during the demolition of the live battery is quickly absorbed by the dry ice, thereby greatly reducing the scale of the chain reaction caused by the short circuit. At the same time, the dry ice will quickly gasify into carbon dioxide when heated, forming an isolation of oxygen, so that the combustion is quickly weakened and disappears, so that it is not easy to produce a deflagration.

[0019] Specifically, the stirring device 1 includes a stirring tank 11, a stirring part 12 is installed in the stirring tank 11, a fixing seat 14 is arranged in the middle of the feed hopper 16, the fixing seat 14 is connected to the feed hopper 16 through at least three evenly distributed connecting plates 15, a motor 13 is installed on the fixing seat 14, and the output shaft of the motor 13 extends downward to be connected to the stirring part 12 for transmission. The stirring part 12 is driven to rotate by the motor 13, so as to achieve full mixing of the battery and the dry ice in the stirring tank 11, so that the battery has a lower temperature before entering the crushing device 3, thereby improving the safety, stability and controllability of live demolition.

[0020] The stirring part 12 includes a stirring shaft and a stirring rod installed on the stirring shaft. The stirring shaft is connected to the output shaft of the machine 13. The stirring rod stirs the battery and the dry ice under the drive of the stirring shaft.

[0021] Specifically, the gate valve 2 adopts a double-layer gate valve to ensure the sealing performance of the crushing chamber of the crushing equipment 3.

[0022] When in use, first the gates of the upper and lower layers of the gate valve 2 are closed, battery materials are put into the stirring tank 11, and then dry ice is added for stirring. After stirring evenly, the upper gate is opened, and the battery and dry ice mixture enters the lower gate. Then the upper gate is closed, and the lower gate is opened again, and the battery and dry ice mixture enters the crushing chamber of the crushing device 3 for crushing. The opening and closing of the upper and lower gates are driven by cylinders, and the double-layer gate valve is a prior art and will not be described here.

[0023] Specifically, the crushing device 3 adopts a double-shaft crusher, or a single-shaft crusher, or a combination of a double-shaft crusher and a single-shaft crusher. Both the double-shaft crusher and the single-shaft crusher are existing technologies and are selected according to the size of the material. The combination of the double-shaft crusher and the single-shaft crusher is to install the double-shaft crusher above the single-shaft crusher, the double-shaft crusher is used to crush large particles into fragments, and the single-shaft crusher is used to break the fragments into small particles again. When in use, the discharge port on the lower side of the double-shaft crusher is sealed and connected to the feed port of the single-shaft crusher through a pipeline.

[0024] Specifically, the discharger 4 is a star-shaped discharger, which can form a closed space in the crushing cavity of the crushing equipment 3 while discharging.

[0025] In a preferred embodiment, the dry ice injection port 5 is a discharge port of a granular dry ice machine 6. The granular dry ice machine 6 produces granular dry ice or columnar solid dry ice, which is fed into the mixing device 1 from the dry ice injection port 5. When solid dry ice is used, when the battery and dry ice mixture enters the crushing cavity of the crushing device 3, the dry ice is not easy to leak out from the bottom screen of the crushing device 3.

[0026] Furthermore, in order to facilitate the feeding of battery materials into the stirring device 1 , the system is provided with a feeding conveyor 7 .

[0027] The working process or principle of this utility model:

[0028] The large amount of heat energy generated during the dismantling of the battery and dry ice mixture is quickly absorbed by the dry ice, thereby greatly reducing the scale of the chain reaction caused by the short circuit. At the same time, the dry ice will quickly vaporize into carbon dioxide, forming an isolation of oxygen, causing the combustion to quickly weaken and disappear.

Claims

1. Lithium battery live crushing system, characterized by: The invention comprises a stirring device (1), a gate valve (2), a crushing device (3) and a discharger (4) which are connected in sequence from top to bottom. The stirring device (1) is provided with a feed hopper (16) at the upper end, and a discharger (4) is provided with a discharge port (41) at the lower end. The stirring device (1) also comprises a dry ice injection port (5) for adding dry ice into the stirring device (1).

2. The lithium battery charged crushing system according to claim 1 is characterized in that: The stirring device (1) comprises a stirring tank (11), a stirring portion (12) is installed in the stirring tank (11), a fixing seat (14) is arranged in the middle of a feed hopper (16), the fixing seat (14) is connected to the feed hopper (16) via at least three evenly distributed connecting plates (15) on the circumference, a motor (13) is installed on the fixing seat (14), and an output shaft of the motor (13) extends downward and is connected to the stirring portion (12) for transmission.

3. The lithium battery charged crushing system according to claim 1 is characterized in that: The gate valve (2) is a double-layer gate valve.

4. The lithium battery charged crushing system according to claim 1 is characterized in that: The crushing equipment (3) adopts a double-shaft crusher, or a single-shaft crusher, or a combination of a double-shaft crusher and a single-shaft crusher.

5. The lithium battery charged crushing system according to claim 1 is characterized in that: The discharger (4) is a star-shaped discharger.

6. The lithium battery charged crushing system according to claim 1, characterized in that: The dry ice injection port (5) is a discharge port of the granulated dry ice machine (6).

7. The lithium battery charged crushing system according to claim 1, characterized in that: It also includes a loading conveyor (7).

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