Waste gas treatment device in lithium battery recovery

Abstract

The utility model discloses a waste gas treatment device in lithium battery recovery, which comprises a box body, crushing rollers in bilateral symmetry are arranged in the box body, a first driving motor in transmission connection with the crushing rollers is fixedly arranged outside the box body, inclined plane pedestals are arranged on the left side and the right side in the box body, and a downward channel is reserved between the two inclined plane pedestals. And the end part of a motor shaft of the second driving motor is rotationally connected with a fan blade plate. According to the scheme, crushed materials on the filter screen are more uniformly dispersed through the vibration motor, waste lithium batteries are sequentially subjected to crushing, acid leaching and sodium hydroxide waste liquid treatment, waste gas generated in the treatment process is filtered and purified by the activated carbon adsorption column at the bottom of the piston cover, and metal precipitates remaining on the filter screen can be taken out by quickly disassembling the filter screen; according to the waste lithium battery recycling device, the waste lithium battery recycling efficiency is improved, the activated carbon adsorption column and the filter screen can be rapidly detached, cleaned and replaced, and the waste lithium battery recycling convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste lithium battery recycling, in particular to a waste gas treatment device in lithium battery recycling. Background Art

[0002] Recycling used lithium batteries is crucial for environmental protection. If discarded, the toxic substances and heavy metals they contain can cause serious environmental pollution, impacting the health of humans and other living things. Furthermore, batteries contain valuable metals such as cobalt, nickel, and lithium, which are high-value resources. Recycling these metals can be used to manufacture new lithium batteries, reducing costs in the new energy industry.

[0003] During the recycling process, a series of technical operations are required, such as disassembly, separation and recycling of various elements of waste lithium batteries. Harmful gases will be generated during the disassembly and separation of materials of waste lithium batteries. These harmful gases need to be purified accordingly during the recycling of lithium batteries. The filtering structure used to precipitate the separated substances during the recycling of lithium batteries also needs to be disassembled, replaced and cleaned in time. Therefore, this solution provides a waste gas treatment device for lithium battery recycling. Utility Model Content

[0004] The purpose of the present invention is to provide a waste gas treatment device for lithium battery recycling to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a waste gas treatment device for lithium battery recycling, comprising a box body, a feeding port being provided at the top end of the box body, a left-right symmetrical crushing roller being installed inside the box body, a first drive motor being fixedly installed on the outside of the box body and connected to the crushing roller in a transmission manner, an inclined pedestal being provided on the left and right sides of the interior of the box body, a downward passage being left between the two inclined pedestals, a second drive motor being fixed inside the inclined pedestal, a fan blade being rotatably connected to the end of the motor shaft of the second drive motor, and the fan blade being closely attached to the surface of the inclined pedestal, and a plurality of flow channels being arranged at equal intervals at the bottom of the inclined surface edge of the inclined pedestal;

[0006] The bottom of the inclined platform is connected to a filter bracket through a spring tube, and a filter is inserted into the filter bracket. A vibration motor is fixedly installed inside the inclined platform, and the motor vibration shaft of the vibration motor is fixed to the filter bracket;

[0007] The bottom inclined surface of the box body is provided with a box body discharge port, and the left and right outer surfaces of the box body are installed with a first reaction liquid feeding port, and the outlet end of the material pipe of the first reaction liquid feeding port is located at the top of the inclined surface of the inclined platform inside the box body.

[0008] Preferably, the bottom of the box body is supported by a support frame, and a second reaction liquid filling container is fixed on one side of the edge of the support frame. The bottom end of the second reaction liquid filling container is connected to the reaction box, the box body discharge port and the reaction box are connected, and a gauze is built into the interior of the reaction box, and a water outlet is provided at the bottom of the reaction box.

[0009] Preferably, a piston cover is inserted at the feeding port, and an activated carbon adsorption column is provided at the bottom end of the piston cover.

[0010] Preferably, the first reaction liquid feeding port is connected to a nitric acid reaction liquid, and the second reaction liquid filling container is filled with a sodium hydroxide solution.

[0011] Beneficial effects

[0012] The utility model provides a waste gas treatment device for lithium battery recycling, which has the following beneficial effects:

[0013] In this solution, the waste lithium batteries are fed into the feeding port and crushed by the crushing roller. The crushed materials are then broken up by the fan blades on the surface of the inclined base and mixed with the nitric acid solution. The crushed materials fall on the filter along multiple flow channels. The vibration motor is used to make the crushed materials on the filter more evenly dispersed. The waste lithium batteries are successively crushed, acid-leached and treated with sodium hydroxide waste liquid. The exhaust gas generated during the treatment process is filtered and purified by the activated carbon adsorption column at the bottom of the piston cover. The metal precipitates remaining on the filter can be removed by quickly disassembling the filter. The device improves the recycling efficiency of waste lithium batteries, and the activated carbon adsorption column and filter can be quickly disassembled, cleaned and replaced, which improves the convenience of recycling waste lithium batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is an internal cross-sectional view of the present utility model;

[0016] Figure 3 This is a structural diagram of the fan blade and the inclined platform of the utility model;

[0017] In the figure: 1. Box body; 2. Feeding port; 3. Crushing roller; 4. First drive motor; 5. Inclined pedestal; 6. Second drive motor; 7. Fan blade; 8. Flow channel; 9. Spring tube; 10. Filter bracket; 11. Filter; 12. Vibration motor; 13. Box body discharge port; 14. First reaction liquid feeding port; 15. Support frame; 16. Second reaction liquid filling container; 17. Reaction box; 18. Gauze; 19. Water outlet; 20. Piston cover; 21. Activated carbon adsorption column. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-3 The utility model provides a technical solution: a waste gas treatment device for lithium battery recycling, comprising a box body 1, a feeding port 2 is provided at the top of the box body 1, a left-right symmetrical crushing roller 3 is installed inside the box body 1, a first drive motor 4 connected to the crushing roller 3 is fixedly installed on the outside of the box body 1, an inclined surface pedestal 5 is provided on the left and right sides of the interior of the box body 1, a downward passage is left between the two inclined surfaces 5, a second drive motor 6 is fixed inside the inclined surface pedestal 5, a fan blade 7 is rotatably connected to the motor shaft end of the second drive motor 6, and the fan blade 7 is tightly attached to the surface of the inclined surface pedestal 5, and a plurality of flow channels 8 are arranged at equal intervals at the bottom of the inclined surface edge of the inclined surface pedestal 5;

[0020] The bottom of the inclined platform 5 is connected to a filter bracket 10 through a spring tube 9, and a filter 11 is inserted into the filter bracket 10. A vibration motor 12 is fixedly installed inside the inclined platform 5, and the motor vibration shaft of the vibration motor 12 is fixed to the filter bracket 10;

[0021] A box discharge port 13 is provided on the bottom inclined surface of the box body 1, and a first reaction liquid feeding port 14 is installed on the left and right outer surfaces of the box body 1. The outlet end of the material pipe of the first reaction liquid feeding port 14 is located at the top of the inclined surface of the inclined platform 5 inside the box body 1.

[0022] The bottom of the box body 1 is supported by a support frame 15, and a second reaction liquid filling container 16 is fixed on one side of the edge of the support frame 15. The bottom end of the second reaction liquid filling container 16 is connected to the reaction box 17. The box body discharge port 13 and the reaction box 17 are connected. A gauze 18 is built into the interior of the reaction box 17, and a water outlet 19 is provided at the bottom of the reaction box 17.

[0023] A piston cover 20 is inserted into the feeding port 2, and an activated carbon adsorption column 21 is provided at the bottom end of the piston cover 20. The piston cover 20 and the feeding port 2 are embedded in each other, and the activated carbon adsorption column 21 is sleeved on the shaft at the bottom of the piston cover 20. The activated carbon adsorption column 21 and the piston cover 20 are detachably assembled, which makes it convenient to remove the piston cover 20 from the feeding port 2 and quickly replace the new activated carbon adsorption column 21.

[0024] The first reaction liquid feeding port 14 is connected to the nitric acid reaction liquid, and the second reaction liquid filling container 16 is filled with sodium hydroxide solution, which is used to perform chemical reaction treatment on the crushed waste lithium batteries, thereby increasing the reaction rate of the waste gas of the waste lithium batteries and facilitating the fly-off during the recovery process to pass through the activated carbon adsorption column 21 at the bottom of the piston cover 20 for adsorption and filtration.

[0025] Working principle:

[0026] In this solution, the front of the box body 1 is also provided with a double-door box door, which is used to pull out the filter 11 from the filter bracket 10 after the box door is opened.

[0027] In this scheme, when recycling lithium batteries, the piston cover 20 is first taken out upward from the feeding port 2, and the waste lithium batteries are put into the box body 1 from the feeding port 2. The waste lithium batteries fall through the box body 1, and the two first drive motors 4 drive the corresponding crushing rollers 3 to rotate in opposite directions to crush the waste lithium batteries. At the same time, nitric acid solution is added from the first reaction liquid feeding port 14, and slides onto the surface of the inclined platform 5. The second drive motor 6 works to drive the three fan blades 7 to rotate at a uniform speed on the surface of the inclined platform 5. The nitric acid solution and the crushed lithium battery waste are mixed and slide from the multiple flow channels 8 at the edge of the inclined platform 5 to the filter screen 11 at the bottom;

[0028] The vibration motor 12 drives the filter bracket 10 to vibrate at the bottom of the inclined platform 5, so that the lithium battery crushed materials on the filter 11 are more uniform. The nitric acid solution reacts with the lithium battery crushed materials to separate the metals in the waste lithium battery materials. The metals are on the filter 11, and the nitric acid solution falls from the filter 11 to the bottom surface of the box 1 and enters the reaction box 17 through the box outlet 13.

[0029] Sodium hydroxide solution is added from the second reaction liquid filling container 16. The sodium hydroxide solution reacts with the nitric acid solution in the reaction box 17 to produce water and salt. The salt precipitates on the gauze 18, while the water is discharged from the water outlet 19 at the bottom of the reaction box 17. The connecting pipe between the second reaction liquid filling container 16 and the box discharge port 13 is embedded and plugged into the box discharge port 13. It is used to remove the second reaction liquid filling container 16 and clean the salt in the reaction box 17. The second reaction liquid filling container 16 and the reaction box 17 are an integrated structure.

[0030] The waste gas generated by the waste lithium batteries during the crushing process by the crushing roller 3 and the harmful gases generated by the reaction of the lithium battery crushed materials with the nitric acid solution are discharged upward from the channel between the two inclined platforms 5 and are purified by the activated carbon adsorption column 21 at the bottom of the piston cover 20 embedded in the feeding port 2. In this solution, the piston cover 20 and the feeding port 2 are embedded in each other, which makes it convenient to replace the activated carbon adsorption column 21 after removing the piston cover 20.

[0031] The first reaction liquid feeding port 14 can be covered with a cover, which is used to prevent harmful gases from being discharged from the inside of the box 1 along the first reaction liquid feeding port 14 after the corresponding reaction liquid is added.

[0032] After the above-mentioned crushing of the waste lithium batteries and purification of the exhaust gas, the metal in the lithium battery material remaining on the filter 11 can be removed by opening the double doors on the outer surface of the box 1 and pulling the filter 11 outward from the filter bracket 10, which is convenient for quickly disassembling the filter 11 and cleaning the metal objects of the waste lithium batteries remaining on the filter 11.

[0033] After the above steps, the recycling of waste lithium batteries and the purification of waste gas are completed.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment device for lithium battery recycling, comprising a box (1), characterized in that: The top end of the box (1) is provided with a feeding port (2), the interior of the box (1) is provided with left-right symmetrical crushing rollers (3), the exterior of the box (1) is fixedly provided with a first driving motor (4) which is transmission-connected to the crushing rollers (3), the interior of the box (1) is provided with inclined pedestals (5) on the left and right sides, a downward passage is left between the two inclined pedestals (5), a second driving motor (6) is fixed inside the inclined pedestal (5), the motor shaft end of the second driving motor (6) is rotatably connected with a fan blade (7), and the fan blade (7) is tightly attached to the surface of the inclined pedestal (5), and a plurality of flow channels (8) are arranged at equal intervals at the bottom of the inclined surface edge of the inclined pedestal (5); The bottom of the inclined surface pedestal (5) is connected to a filter support (10) via a spring tube (9), a filter (11) is plugged into the filter support (10), a vibration motor (12) is fixedly installed inside the inclined surface pedestal (5), and the motor vibration shaft of the vibration motor (12) is fixed to the filter support (10); The bottom inclined surface of the box body (1) is provided with a box body discharge port (13), and the left and right outer surfaces of the box body (1) are provided with a first reaction liquid feeding port (14), and the outlet end of the material pipe of the first reaction liquid feeding port (14) is located at the top of the inclined surface of the inclined surface pedestal (5) inside the box body (1).

2. The waste gas treatment device for lithium battery recycling according to claim 1, characterized in that: The bottom of the box body (1) is supported by a support frame (15), a second reaction liquid filling container (16) is fixed on one side of the edge of the support frame (15), the bottom end of the second reaction liquid filling container (16) is connected to a reaction box (17), the box body discharge port (13) and the reaction box (17) are connected, a gauze (18) is built into the interior of the reaction box (17), and a water outlet (19) is provided at the bottom of the reaction box (17).

3. The waste gas treatment device for lithium battery recycling according to claim 2, characterized in that: A piston cover (20) is plugged into the feeding port (2), and an activated carbon adsorption column (21) is provided at the bottom end of the piston cover (20).

4. The waste gas treatment device for lithium battery recycling according to claim 3, characterized in that: The first reaction liquid feeding port (14) is externally connected to the nitric acid reaction liquid, and the second reaction liquid filling container (16) is filled with sodium hydroxide solution.

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