Recovery equipment and recovery method for metal lithium in waste lithium battery

Abstract

The invention provides equipment and a method for recycling metal lithium in a waste lithium battery, and relates to the technical field of battery material recycling. The top of the base is provided with a discharge barrel and a hollow stand column; a motor A is installed outside the hollow stand column, a vertical screw rod is connected into the hollow stand column, and the motor A is connected with the vertical screw rod. A lifting block is connected to the interior of the hollow stand column and connected with the vertical screw rod, a turnover frame is connected to the exterior of the lifting block, an inner net barrel is connected to the interior of the turnover frame, and the inner net barrel moves in the discharge barrel; an impeller is connected into the discharge barrel, and a motor B is installed outside the discharge barrel and connected with the impeller. Automatic operation is adopted, waste lithium batteries are soaked in saline water to be discharged, fished, poured and drained, and the recycling efficiency of the waste lithium batteries is effectively improved. The problems that in current metal lithium recovery operation in the waste lithium batteries, the waste lithium batteries in saline water need to be manually fished out, and the automation degree is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery material recovery, and in particular to a device and method for recovering metallic lithium from discarded lithium batteries. Background Art

[0002] Lithium-ion batteries have become an ideal power source for the new generation of electric vehicles due to their excellent performance. The widespread use of lithium-ion batteries will inevitably bring a large number of waste batteries. If they are discarded at will, it will not only cause serious pollution to the environment, but also a waste of resources. Lithium-ion batteries contain more metal resources such as lithium, aluminum, and iron, which need to be recycled. The recycling steps of lithium-ion batteries are divided into discharge treatment, disassembly and classification, hydrometallurgy and purification treatment.

[0003] Currently, the recovery of metallic lithium from discarded lithium batteries is just in its infancy. It is usually necessary to manually place the discarded lithium batteries in salt water. After they are fully discharged, tools such as scoop nets are used to scoop the discarded lithium batteries from the salt water into a net bucket to drain the remaining moisture on the outside. This process consumes a lot of physical energy for the workers and has a low degree of automation. Summary of the invention

[0004] The present invention relates to a device and a method for recovering metallic lithium from waste lithium batteries, which solves the problem that the current operation of recovering metallic lithium from waste lithium batteries is just in its infancy and usually requires manual work to place the waste lithium batteries in salt water, wait for them to be fully discharged, and then use a scoop net or other tools to scoop the waste lithium batteries from the salt water into a net bucket to drain the remaining moisture on the outside, which consumes a lot of physical energy for the workers and has a low degree of automation.

[0005] In a first aspect of the present disclosure, a device for recovering metallic lithium from discarded lithium batteries is provided, which specifically comprises: a base; a discharge barrel is placed on the top of the base, and a hollow column is installed on the top of the base; a motor A is installed on the outside of the hollow column, and a vertical screw is connected to the inside of the hollow column, and the motor A is connected to the vertical screw; a lifting block is connected to the inside of the hollow column, and the lifting block is connected to the vertical screw, and a flip frame is connected to the outside of the lifting block, and an inner net barrel is connected to the inside of the flip frame, and the inner net barrel moves in the discharge barrel; an impeller is connected to the inside of the discharge barrel, and a motor B is installed on the outside of the discharge barrel, and the motor B is connected to the impeller; a motor C is installed on the outside of the base, and the motor C is connected to the hollow column; a support frame is installed on the top of the base, and a drain bucket is installed on the top of the support frame, a mesh plate is connected to the inside of the drain bucket, and a baffle is connected to the outside of the drain bucket; two hydraulic cylinders are connected to the top of the base, and the hydraulic cylinders are connected to the mesh plate.

[0006] Furthermore, a worm is installed on the driving shaft of the motor A, the worm is located in the hollow column, the vertical screw rotates in the hollow column, a worm wheel is provided at the bottom of the vertical screw, the worm and the worm wheel are transmission connected, the lifting block is slidably connected to the inside of the hollow column, a vertical screw hole is provided inside the lifting block, and the vertical screw is threadedly connected to the vertical screw hole.

[0007] Furthermore, the impeller is rotatably connected to the discharge barrel, the inside of the impeller is provided with oblique blades in a ring shape, the bottom of the impeller is provided with guide holes in a ring shape, the top of the impeller is provided with a gear ring, and a driving gear is installed on the driving shaft of the motor B. The driving gear is meshed with the gear ring, and the impeller surrounds the outer periphery of the inner net barrel.

[0008] Furthermore, a transverse screw is installed on the driving shaft of the motor C, and the transverse screw is rotatably connected to the base. A slide groove is provided on the top of the base, and the bottom of the hollow column is slidably connected to the slide groove. A transverse screw hole is provided at the bottom of the hollow column, and the transverse screw is threadedly connected to the transverse screw hole.

[0009] Furthermore, the flip frame is rotatably connected to the lifting block, a driven gear is arranged outside the flip frame, a rack is arranged outside the hollow column, and the driven gear is meshed with the rack.

[0010] Furthermore, a recovery pipe is arranged outside the discharge barrel, the top of the recovery pipe is connected to the bottom of the drain barrel, the mesh plate is rotatably connected in the drain barrel, the rotation angle of the mesh plate is 20° to -20°, a discharge port is arranged outside the drain barrel, and the mesh plate moves in the discharge port.

[0011] Furthermore, the drain bucket is provided with arc holes on two opposite sides, and movable blocks are provided at two opposite ends of the mesh plate. The movable blocks are slidably connected in the arc holes, the cylinder body of the hydraulic cylinder is rotatably connected to the support frame, and the piston rod of the hydraulic cylinder is rotatably connected to the movable block.

[0012] Furthermore, the baffle is slidably connected to the drain bucket, the bottom of the baffle is located at the discharge port, the bottom of the baffle is in contact with the top side of the mesh plate, a limit block is arranged outside the drain bucket, a sliding hole is arranged inside the baffle, and the limit block is slidably connected in the sliding hole.

[0013] The present invention discloses a method for recovering metal lithium from waste lithium batteries, comprising the following steps:

[0014] 1) First, place the discarded lithium battery in the inner net barrel, and the motor A drives the vertical screw to rotate, and the vertical screw drives the lifting block to move downward. The lifting block drives the inner net barrel to move synchronously through the flip frame, so that the bottom of the inner net barrel is immersed in the salt water inside the discharge barrel, and the salt water covers the discarded lithium battery, and the remaining electrical energy in the discarded lithium battery is released into the salt water;

[0015] 2) After the waste lithium battery is discharged, the motor A drives the inner net bucket to rise to half the height, so that the bottom of the inner net bucket is higher than the top of the discharge bucket, the driven gear and the rack are in meshing state, and the motor C drives the hollow column to move, so that the inner net bucket moves to the top of the drain bucket;

[0016] 3) At the same time, the motor A drives the inner net bucket to rise to the top, and the driven gear meshes with the rack to drive the inner net bucket to rotate, so that the inner net bucket at the top of the drain bucket is turned over, and the waste lithium batteries after discharge are poured into the drain bucket. The waste lithium batteries are supported by the mesh plate, so that the salt water remaining outside the waste lithium batteries is recovered into the discharge bucket along the recovery pipe;

[0017] 4) Motor A and motor C drive the internal network bucket to reset, and at the same time, the next batch of waste lithium batteries are discharged;

[0018] 5) After the waste lithium batteries in the drain bucket are drained of water, the hydraulic cylinder drives the mesh plate to rotate downward, and the baffle moves downward synchronously under the influence of gravity. When the mesh plate rotates to one-half, the limit block moves to the top of the slide hole, and the baffle stops moving downward. The baffle blocks half of the area of ​​the discharge port, and the hydraulic cylinder drives the mesh plate to continue to rotate downward, so that the dried waste lithium batteries fall into the pre-placed collection frame below through the discharge port, thus completing the discharge operation in the recycling process.

[0019] The present invention provides a device and method for recovering metallic lithium from waste lithium batteries, which has the following beneficial effects:

[0020] When the present invention is in use, the waste lithium batteries to be processed are placed in the inner net barrel, the motor A drives the vertical screw to rotate, the vertical screw drives the lifting block to move downward, and the lifting block drives the inner net barrel to move synchronously through the flip frame, so that the bottom of the inner net barrel is immersed in the brine inside the discharge barrel, the brine covers the waste lithium batteries, and the remaining electrical energy in the waste lithium batteries is released into the brine, thereby ensuring the safety of subsequent recycling and processing; the motor B drives the impeller to rotate, the lower layer of brine reaches between the inclined blades through the guide holes, and is transported to the inner net barrel through the inclined blades, so that the brine inside the discharge barrel circulates and circulates, ensuring the consistency of the brine concentration, thereby ensuring the excellent discharge effect of the waste lithium batteries inside the inner net barrel.

[0021] In addition, after the waste lithium batteries in the inner net barrel are discharged, motor A drives the inner net barrel to rise to one-half of the height, so that the bottom of the inner net barrel is higher than the top of the discharge barrel, and the driven gear is in meshing state with the rack, and motor C drives the hollow column to move, so that the inner net barrel moves to the top of the drain barrel. At the same time, motor A drives the inner net barrel to rise to the top, so that the inner net barrel on the top of the drain barrel is flipped, and the waste lithium batteries after discharge can be poured into the drain barrel, and the waste lithium batteries are supported by the mesh plate, so that the salt water remaining on the outside of the waste lithium batteries can be recovered into the discharge barrel along the recovery pipe, thereby reducing the consumption of salt water. During the draining process of the waste lithium batteries, the inner net barrel and the discharge barrel are in an idle state, and the next batch of waste lithium batteries can be discharged and recycled, thereby fully improving the discharge and recycling efficiency of the waste lithium batteries.

[0022] In addition, after the brine outside the discarded lithium batteries is drained, the hydraulic cylinder drives the mesh plate to rotate downward, and the baffle moves downward synchronously under the influence of gravity. When the mesh plate rotates to one-half, the limit block moves to the top of the slide hole, and the baffle stops moving downward. The baffle blocks half of the area of ​​the discharge port, and the hydraulic cylinder drives the mesh plate to continue to rotate downward, so that the dried discarded lithium batteries fall into the pre-placed collection frame below through the discharge port; the baffle limits the size of the discharge port and controls the discharge speed of the discarded lithium batteries to prevent all the discarded lithium batteries from being discharged at once, which is convenient for subsequent collection operations; when the mesh plate rotates to the top, the mesh plate drives the baffle to move to the top, and the top of the baffle is higher than the drain bucket. In the process of dumping the discarded lithium batteries inside the inner mesh bucket, the baffle has a blocking effect on the discarded lithium batteries to prevent the discarded lithium batteries from leaking from the edge of the drain bucket.

[0023] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0025] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0026] In the attached picture:

[0027] Figure 1 The overall axial side structure schematic diagram of the present application is shown;

[0028] Figure 2 It shows a schematic diagram of the axial structure of the discharge barrel of the present application in a flipped and tilted state;

[0029] Figure 3 A schematic diagram of the split structure of the base and the hollow column of the present application is shown;

[0030] Figure 4 A schematic diagram of the cut-and-disassembled structure of the hollow column, lifting block and flip frame of the present application is shown;

[0031] Figure 5 The schematic diagram of the disassembly structure of the discharge barrel and the impeller of the present application is shown;

[0032] Figure 6 It shows a schematic diagram of the shaft side structure of the screen plate of the present application when it is rotated downward;

[0033] Figure 7 It shows a schematic diagram of the shaft side structure of the screen plate of the present application when it is in an upwardly rotating state;

[0034] Figure 8 A schematic diagram of the disassembled structure of the support frame, drain bucket, mesh plate and baffle plate of the present application is shown.

[0035] Reference numerals list

[0036] 1. Base; 101. Slide;

[0037] 2. Discharge barrel; 201. Recovery pipe;

[0038] 3. Hollow column; 301. Horizontal screw hole; 302. Rack;

[0039] 4. Motor A; 401, worm;

[0040] 5. Vertical screw; 501. Worm gear;

[0041] 6. Lifting block; 601. Vertical screw hole;

[0042] 7. Turning frame; 701. Driven gear;

[0043] 8. Intranet bucket;

[0044] 9. Impeller; 901. Oblique blades; 902. Diversion holes; 903. Gear ring;

[0045] 10. Motor B; 1001. Driving gear;

[0046] 11. Motor C; 1101. Horizontal screw;

[0047] 12. Support frame;

[0048] 13. Drain bucket; 1301. Discharge port; 1302. Arc hole; 1303. Limit block;

[0049] 14. Screen plate; 1401. Movable block;

[0050] 15. baffle; 1501. slide hole;

[0051] 16. Hydraulic cylinder. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] Example 1: Please refer to Figures 1 to 8 :

[0054] The present invention proposes a device for recovering metallic lithium from waste lithium batteries, comprising: a base 1; a discharge barrel 2 is placed on the top of the base 1, and a hollow column 3 is installed on the top of the base 1; a motor A4 is installed on the outside of the hollow column 3, and a vertical screw 5 is connected to the inside of the hollow column 3, and the motor A4 is connected to the vertical screw 5; a lifting block 6 is connected to the inside of the hollow column 3, and the lifting block 6 is connected to the vertical screw 5, and a flip frame 7 is connected to the outside of the lifting block 6, and an inner net barrel 8 is connected to the inside of the flip frame 7, and the inner net barrel 8 moves in the discharge barrel 2; an impeller 9 is connected to the inside of the discharge barrel 2, and a motor B10 is installed on the outside of the discharge barrel 2, and the motor B10 is connected to the impeller 9; a motor C11 is installed on the outside of the base 1, and the motor C11 is connected to the hollow column 3; a support frame 12 is installed on the top of the base 1, and a drain bucket 13 is installed on the top of the support frame 12, and a mesh plate 14 is connected to the drain bucket 13, and a baffle plate 14 is connected to the drain bucket 13 Plate 15; two hydraulic cylinders 16 are connected to the top of the base 1, and the hydraulic cylinders 16 are connected to the mesh plate 14; a worm 401 is installed on the driving shaft of the motor A4, and the worm 401 is located in the hollow column 3, and the vertical screw 5 rotates in the hollow column 3. A worm wheel 501 is arranged at the bottom of the vertical screw 5, and the worm 401 is connected to the worm wheel 501 by transmission, and the lifting block 6 is slidably connected to the inside of the hollow column 3, and a vertical screw hole 601 is arranged inside the lifting block 6, and the vertical screw 5 is threadedly connected in the vertical screw hole 601; the waste lithium batteries to be processed are placed in the inner net barrel 8, and the motor A4 drives the vertical screw 5 to rotate, and the vertical screw 5 drives the lifting block 6 to move downward, and the lifting block 6 drives the inner net barrel 8 to move synchronously through the flip frame 7, so that the bottom of the inner net barrel 8 is immersed in the brine inside the discharge barrel 2, and the brine submerges the waste lithium batteries, so that the remaining electrical energy in the waste lithium batteries is released into the brine, thereby ensuring the safety of subsequent recycling and processing.

[0055] In the disclosed embodiment, the impeller 9 is rotatably connected to the discharge barrel 2, the impeller 9 is provided with oblique blades 901 in a circumferential shape, the bottom of the impeller 9 is provided with a guide hole 902 in a circumferential shape, the top of the impeller 9 is provided with a gear ring 903, and a driving gear 1001 is installed on the driving shaft of the motor B10, the driving gear 1001 is in transmission meshing with the gear ring 903, and the impeller 9 surrounds the outer periphery of the inner net barrel 8;

[0056] By adopting the above technical solution, the impeller 9 is driven to rotate by the motor B10, and the lower layer of brine reaches between the inclined blades 901 through the guide hole 902, and is transported to the inner net barrel 8 through the inclined blades 901, so as to realize the circulation of brine inside the discharge barrel 2 and ensure the consistency of brine concentration, thereby ensuring the excellent discharge effect of the discarded lithium batteries inside the inner net barrel 8.

[0057] In the disclosed embodiment, a transverse screw 1101 is installed on the driving shaft of the motor C11, and the transverse screw 1101 is rotatably connected to the base 1. A slide groove 101 is provided on the top of the base 1, and the bottom of the hollow column 3 is slidably connected to the slide groove 101. A transverse screw hole 301 is provided at the bottom of the hollow column 3, and the transverse screw 1101 is threadedly connected to the transverse screw hole 301. The flip frame 7 is rotatably connected to the lifting block 6, and a driven gear 701 is provided on the outside of the flip frame 7. A rack 302 is provided on the outside of the hollow column 3, and the driven gear 701 is transmission-engaged with the rack 302. A recovery pipe 201 is provided on the outside of the discharge barrel 2, and the top of the recovery pipe 201 is connected to the bottom of the drain barrel 13. The mesh plate 14 is rotatably connected to the drain barrel 13, and the rotation angle of the mesh plate 14 is 20° to -20°. A discharge port 1301 is provided on the outside of the drain barrel 13, and the mesh plate 14 moves in the discharge port 1301;

[0058] By adopting the above technical scheme, after the waste lithium batteries in the inner net bucket 8 are discharged, the motor A4 drives the inner net bucket 8 to rise to one-half of the height, so that the bottom of the inner net bucket 8 is higher than the top of the discharge bucket 2, and the driven gear 701 is in meshing state with the rack 302. The motor C11 drives the hollow column 3 to move, so that the inner net bucket 8 moves to the top of the drain bucket 13. At the same time, the motor A4 drives the inner net bucket 8 to rise to the top, so that the inner net bucket 8 at the top of the drain bucket 13 is flipped, and the waste lithium batteries after discharge can be poured into the drain bucket 13. The waste lithium batteries are supported by the mesh plate 14, so that the salt water remaining on the outside of the waste lithium batteries is recovered into the discharge bucket 2 along the recovery pipe 201, thereby reducing the consumption of salt water. During the drainage process of the waste lithium batteries, the inner net bucket 8 and the discharge bucket 2 are in an idle state, and the next batch of waste lithium batteries can be discharged and recovered, thereby fully improving the discharge and recovery efficiency of the waste lithium batteries.

[0059] Embodiment 2, on the basis of embodiment 1, arc-shaped holes 1302 are provided on opposite sides of the drain bucket 13, movable blocks 1401 are provided on opposite ends of the mesh plate 14, the movable blocks 1401 are slidably connected in the arc-shaped holes 1302, the cylinder body of the hydraulic cylinder 16 is rotatably connected to the support frame 12, the piston rod of the hydraulic cylinder 16 is rotatably connected to the movable block 1401, the baffle plate 15 is slidably connected to the drain bucket 13, the bottom of the baffle plate 15 is located at the discharge port 1301, the bottom of the baffle plate 15 is in contact with the top side of the mesh plate 14, a limiting block 1303 is provided on the outside of the drain bucket 13, a sliding hole 1501 is provided on the inside of the baffle plate 15, and the limiting block 1303 is slidably connected in the sliding hole 1501;

[0060] By adopting the above technical scheme, after the brine outside the discarded lithium battery is drained, the hydraulic cylinder 16 drives the mesh plate 14 to rotate downward, and the baffle 15 moves downward synchronously under the influence of gravity. When the mesh plate 14 rotates to one-half, the limit block 1303 moves to the top of the slide hole 1501, and the baffle 15 stops moving downward. The baffle 15 blocks half of the area of ​​the discharge port 1301, and the hydraulic cylinder 16 drives the mesh plate 14 to continue to rotate downward, so that the dried discarded lithium batteries fall into the collection frame pre-placed below through the discharge port 1301; the size of the discharge port 1301 is limited by the baffle 15, the discharge speed of the discarded lithium batteries is controlled, and the discarded lithium batteries are prevented from being discharged all at once, which is convenient for subsequent collection operations; when the mesh plate 14 rotates to the top, the mesh plate 14 drives the baffle 15 to move to the top, and the top of the baffle 15 is higher than the drain bucket 13. In the process of dumping the discarded lithium batteries inside the inner mesh bucket 8, the baffle 15 plays a blocking effect on the discarded lithium batteries, preventing the discarded lithium batteries from leaking from the edge of the drain bucket 13.

[0061] The present invention discloses a method for recovering metal lithium from waste lithium batteries, comprising the following steps:

[0062] 1) First, the discarded lithium battery is placed in the inner net barrel 8, the motor A4 drives the vertical screw 5 to rotate, the vertical screw 5 drives the lifting block 6 to move downward, and the lifting block 6 drives the inner net barrel 8 to move synchronously through the flip frame 7, so that the bottom of the inner net barrel 8 is immersed in the salt water inside the discharge barrel 2, the salt water covers the discarded lithium battery, and the remaining electrical energy in the discarded lithium battery is released into the salt water;

[0063] 2) After the waste lithium battery is discharged, the motor A4 drives the inner net bucket 8 to rise to half the height, so that the bottom of the inner net bucket 8 is higher than the top of the discharge bucket 2, the driven gear 701 is in meshing state with the rack 302, and the motor C11 drives the hollow column 3 to move, so that the inner net bucket 8 moves to the top of the drain bucket 13;

[0064] 3) At the same time, the motor A4 drives the inner net bucket 8 to rise to the top, and the driven gear 701 meshes with the rack 302 to drive the inner net bucket 8 to rotate, so that the inner net bucket 8 at the top of the drain bucket 13 is turned over, and the waste lithium batteries after discharge are poured into the drain bucket 13, and the waste lithium batteries are supported by the mesh plate 14, so that the salt water remaining outside the waste lithium batteries is recovered into the discharge bucket 2 along the recovery pipe 201;

[0065] 4) Motor A4 and motor C11 drive the inner network bucket 8 to reset, and at the same time, discharge the next batch of waste lithium batteries;

[0066] 5) After the waste lithium batteries in the drain bucket 13 are drained of water, the hydraulic cylinder 16 drives the mesh plate 14 to rotate downward, and the baffle 15 moves downward synchronously under the influence of gravity. When the mesh plate 14 rotates to one-half, the limit block 1303 moves to the top of the slide hole 1501, and the baffle 15 stops moving downward. The baffle 15 blocks half of the area of ​​the discharge port 1301, and the hydraulic cylinder 16 drives the mesh plate 14 to continue to rotate downward, so that the dried waste lithium batteries fall into the pre-placed collection frame below through the discharge port 1301, thereby completing the discharge operation in the recycling process.

[0067] The working principle of this embodiment is as follows: the discarded lithium batteries are placed in the inner net barrel 8, the motor A4 drives the vertical screw 5 to rotate, the vertical screw 5 drives the lifting block 6 to move downward, and the lifting block 6 drives the inner net barrel 8 to move synchronously through the flip frame 7, so that the bottom of the inner net barrel 8 is immersed in the salt water inside the discharge barrel 2, the salt water covers the discarded lithium batteries, and the remaining electrical energy in the discarded lithium batteries is released into the salt water; after the waste lithium batteries are discharged, the motor A4 drives the inner net barrel 8 to rise to half the height, so that the bottom of the inner net barrel 8 is higher than the top of the discharge barrel 2, the driven gear 701 is in meshing state with the rack 302, and the motor C11 drives the hollow The column 3 moves, so that the inner net bucket 8 moves to the top of the drain bucket 13; at the same time, the motor A4 drives the inner net bucket 8 to rise to the top, and the driven gear 701 is meshed with the rack 302 to drive the inner net bucket 8 to rotate, so that the inner net bucket 8 at the top of the drain bucket 13 is turned over, and the waste lithium batteries after discharge are poured into the drain bucket 13, and the waste lithium batteries are supported by the mesh plate 14, so that the salt water remaining on the outside of the waste lithium batteries is recovered into the discharge bucket 2 along the recovery pipe 201; during the waste lithium battery draining process, the inner net bucket 8 and the discharge bucket 2 are in an idle state, and the motor A4 and the motor C11 drive the inner net bucket 8 to rotate. The net barrel 8 is reset, and the next batch of waste lithium battery discharge and recycling operations can be carried out; after the waste lithium batteries in the drain barrel 13 are drained of water, the hydraulic cylinder 16 drives the net plate 14 to rotate downward, and the baffle 15 moves downward synchronously under the influence of gravity. When the net plate 14 rotates to one-half, the limit block 1303 moves to the top of the slide hole 1501, and the baffle 15 stops moving downward. The baffle 15 blocks half of the area of ​​the discharge port 1301, and the hydraulic cylinder 16 drives the net plate 14 to continue to rotate downward, so that the dried waste lithium batteries fall into the pre-placed collection frame below through the discharge port 1301; the motor B10 drives the blade As the wheel 9 rotates, the lower layer of brine reaches between the inclined blades 901 through the guide holes 902, and is transported to the inner net barrel 8 through the inclined blades 901, thereby realizing the circulation of brine inside the discharge barrel 2 and ensuring the consistency of brine concentration. The size of the discharge port 1301 is limited by the baffle 15 to control the discharge speed of the discarded lithium batteries. When the mesh plate 14 rotates to the top, the mesh plate 14 drives the baffle 15 to move to the top, and the top of the baffle 15 is higher than the drain bucket 13. In the process of dumping the discarded lithium batteries inside the inner net barrel 8, the baffle 15 has a blocking effect on the discarded lithium batteries, thereby preventing the discarded lithium batteries from leaking from the edge of the drain bucket 13.

[0068] In this article, there are a few points to note:

[0069] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0070] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0071] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A device for recovering metallic lithium from waste lithium batteries, comprising: A base (1); characterized in that a discharge barrel (2) is placed on the top of the base (1), and a hollow column (3) is installed on the top of the base (1); a motor A (4) is installed on the outside of the hollow column (3), and a vertical screw (5) is connected to the inside of the hollow column (3), and the motor A (4) is connected to the vertical screw (5); a lifting block (6) is connected to the inside of the hollow column (3), and the lifting block (6) is connected to the vertical screw (5); the lifting block (6) is connected to the outside of the lifting block (6), and the lifting frame (7) is connected to the inside of the lifting frame (7), and the inner net barrel (8) is movable in the discharge barrel (2); the discharge barrel ( 2) is connected to an impeller (9) inside, a motor B (10) is installed outside the discharge barrel (2), and the motor B (10) is connected to the impeller (9); a motor C (11) is installed outside the base (1), and the motor C (11) is connected to the hollow column (3); a support frame (12) is installed on the top of the base (1), a drain bucket (13) is installed on the top of the support frame (12), a mesh plate (14) is connected inside the drain bucket (13), and a baffle (15) is connected outside the drain bucket (13); two hydraulic cylinders (16) are connected to the top of the base (1), and the hydraulic cylinders (16) are connected to the mesh plate (14).

2. The metal lithium recovery device for waste lithium batteries according to claim 1, characterized in that: A worm (401) is installed on the driving shaft of the motor A (4), the worm (401) is located in the hollow column (3), the vertical screw (5) rotates in the hollow column (3), a worm wheel (501) is arranged at the bottom of the vertical screw (5), the worm (401) and the worm wheel (501) are connected in driving manner, the lifting block (6) is slidably connected to the inside of the hollow column (3), a vertical screw hole (601) is arranged in the lifting block (6), and the vertical screw (5) is threadedly connected to the vertical screw hole (601).

3. The metal lithium recovery device in waste lithium batteries according to claim 1, characterized in that: The impeller (9) is rotatably connected to the discharge barrel (2); inclined blades (901) are arranged in a circumferential shape inside the impeller (9); a guide hole (902) is arranged in a circumferential shape at the bottom of the impeller (9); a gear ring (903) is arranged at the top of the impeller (9); a driving gear (1001) is installed on the driving shaft of the motor B (10); the driving gear (1001) is in transmission meshing engagement with the gear ring (903); and the impeller (9) surrounds the periphery of the inner net barrel (8).

4. The metal lithium recovery device in waste lithium batteries according to claim 1, characterized in that: A transverse screw (1101) is mounted on the driving shaft of the motor C (11), and the transverse screw (1101) is rotatably connected to the base (1). A slide groove (101) is provided on the top of the base (1), and the bottom of the hollow column (3) is slidably connected in the slide groove (101). A transverse screw hole (301) is provided on the bottom of the hollow column (3), and the transverse screw (1101) is threadedly connected in the transverse screw hole (301).

5. The metal lithium recovery equipment in waste lithium batteries according to claim 1, characterized in that: The tilting frame (7) is rotationally connected to the lifting block (6); a driven gear (701) is disposed outside the tilting frame (7); a rack (302) is disposed outside the hollow column (3); and the driven gear (701) is in transmission meshing engagement with the rack (302).

6. The metal lithium recovery equipment in waste lithium batteries according to claim 1, characterized in that: The discharge barrel (2) is provided with a recovery pipe (201) outside, the top of the recovery pipe (201) is connected to the bottom of the drain barrel (13), the mesh plate (14) is rotatably connected inside the drain barrel (13), the rotation angle of the mesh plate (14) is 20° to -20°, the drain barrel (13) is provided with a discharge port (1301) outside, and the mesh plate (14) moves inside the discharge port (1301).

7. The equipment for recovering metallic lithium from waste lithium batteries according to claim 1, characterized in that: The drain bucket (13) is provided with arc-shaped holes (1302) at two opposite sides, and the mesh plate (14) is provided with movable blocks (1401) at two opposite ends. The movable blocks (1401) are slidably connected in the arc-shaped holes (1302), the cylinder body of the hydraulic cylinder (16) is rotatably connected to the support frame (12), and the piston rod of the hydraulic cylinder (16) is rotatably connected to the movable block (1401).

8. The equipment for recovering metallic lithium from waste lithium batteries according to claim 1, characterized in that: The baffle (15) is slidably connected to the drain bucket (13), the bottom of the baffle (15) is located at the discharge port (1301), the bottom of the baffle (15) is in contact with the top side of the mesh plate (14), a limit block (1303) is arranged outside the drain bucket (13), a sliding hole (1501) is arranged inside the baffle (15), and the limit block (1303) is slidably connected to the sliding hole (1501).

9. A method for recovering metallic lithium from waste lithium batteries according to any one of claims 1 to 8, characterized in that: 1) First, the waste lithium battery is placed in the inner net barrel (8), the motor A (4) drives the vertical screw (5) to rotate, the vertical screw (5) drives the lifting block (6) to move downward, and the lifting block (6) drives the inner net barrel (8) to move synchronously through the turning frame (7), so that the bottom of the inner net barrel (8) is immersed in the salt water inside the discharge barrel (2), the salt water covers the waste lithium battery, and the remaining electric energy in the waste lithium battery is released into the salt water; 2) After the waste lithium battery is discharged, the motor A (4) drives the inner net bucket (8) to rise to half of its height, so that the bottom of the inner net bucket (8) is higher than the top of the discharge bucket (2), the driven gear (701) and the rack (302) are in meshing state, and the motor C (11) drives the hollow column (3) to move, so that the inner net bucket (8) moves to the top of the drain bucket (13); 3) At the same time, the motor A (4) drives the inner net bucket (8) to rise to the top, and the driven gear (701) and the rack (302) are meshed and driven to drive the inner net bucket (8) to rotate, so that the inner net bucket (8) at the top of the drain bucket (13) is turned over, and the waste lithium batteries after discharge are poured into the drain bucket (13), and the waste lithium batteries are supported by the mesh plate (14), so that the salt water remaining on the outside of the waste lithium batteries is recovered into the discharge bucket (2) along the recovery pipe (201); 4) Motor A (4) and motor C (11) drive the inner network bucket (8) to reset, and at the same time, discharge the next batch of waste lithium batteries; 5) After the waste lithium batteries in the drain bucket (13) are drained of water, the hydraulic cylinder (16) drives the mesh plate (14) to rotate downward, and the baffle plate (15) moves downward synchronously under the influence of gravity. When the mesh plate (14) rotates to one-half, the limit block (1303) moves to the top of the slide hole (1501), and the baffle plate (15) stops moving downward. The baffle plate (15) blocks half of the area of ​​the discharge port (1301), and the hydraulic cylinder (16) drives the mesh plate (14) to continue to rotate downward, so that the dried waste lithium batteries fall into the pre-placed collection frame below through the discharge port (1301), thereby completing the discharge operation in the recycling process.

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