Recovery device for lithium in waste electrolyte of lithium battery

Abstract

The invention discloses a recovery device for lithium in lithium battery waste electrolyte, and relates to the technical field of centrifugal extraction, the recovery device comprises three supporting legs, an extraction tower is fixedly arranged at the tops of the three supporting legs, a top cover is fixedly arranged at the top of the extraction tower, and an adjusting mechanism is arranged at the top of the top cover. Through the arrangement of a third wedge-shaped block, an adjusting motor, a U-shaped sliding plate, a first conical block, an adjusting spring, a sliding block, an L-shaped adjusting rod and a second conical block, the centrifugal rotating speed is adaptively reduced along with temperature rising, the centrifugal shaft rotating speed is adjusted in cooperation, and it is guaranteed that the centrifugal rotating speed is reduced under the high-temperature environment condition; continuous temperature rise is avoided by reducing the rotating speed of the centrifugal shaft, the problem of internal extraction liquid emulsification caused by too high temperature of the extraction tower can be avoided while the centrifugal efficiency is guaranteed by increasing the centrifugal length of the centrifugal shaft, damage to the extraction tower caused by continuous temperature rise is avoided, the service life of the extraction tower is guaranteed, and the extraction tower is high in applicability and worthy of popularization.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal extraction, in particular to a device for recovering lithium in waste electrolyte of lithium batteries. Background Art

[0002] In the industry, lithium is extracted from waste electrolytes mostly by mechanical methods, high temperature treatment methods or extraction methods to separate the internal lithium ions. Among them, the waste electrolyte extraction method is widely used, and the waste electrolyte extraction method for extracting lithium ions has the advantages of high lithium yield, high purity of lithium products, large processing volume, short process, small investment and easy industrial production. This method uses a centrifugal extractor as the core extraction equipment and an extraction system containing a composite extractant to extract the lithium-containing solution under high pH conditions, achieving efficient extraction of lithium and separating it from a large number of impurity elements such as sodium, potassium and boron.

[0003] The invention patent with patent number CN116422006A discloses a centrifugal extractor, which includes a first flow channel, a second flow channel, a sixth chamber and a fifth chamber. The sixth chamber can rotate to centrifugally extract a mixed liquid. The heavy phase liquid extracted by centrifugation is discharged through the first flow channel, and the light phase liquid extracted by centrifugation is discharged through the second flow channel. The light phase liquid mixed in the heavy phase liquid in the first flow channel is discharged into the fifth chamber, and the heavy phase liquid mixed in the light phase liquid in the second flow channel is discharged into the fifth chamber. The fifth chamber re-enters the sixth chamber for centrifugal extraction of the stored mixed liquid; the fifth chamber is set to collect the mixed liquid that is not completely extracted by centrifugation in the heavy phase liquid and the light phase liquid, and the mixed liquid is re-centrifugally extracted through the fifth chamber to improve the effect of centrifugal extraction.

[0004] The above-mentioned device re-extracts the mixed liquid that is not completely extracted through multiple chambers, thereby improving the effect of centrifugal extraction. However, there are many factors that affect the actual extraction effect, among which the rotation speed, ambient temperature, and the diameter and length of the drum are related. Especially in summer, the machine is difficult to dissipate heat, and the staff is required to monitor the temperature of the machine at all times and adjust the centrifugal speed according to the temperature. This not only greatly increases the labor intensity of the staff, but also makes it easy for negligence to occur during manual supervision, resulting in overheating and damage of the machine. In addition, the temperature exceeds the suitable extraction temperature and destroys the mixing and extraction of the internal liquid. However, most of the existing technologies achieve the cooling effect by increasing heat dissipation or reducing the centrifugal speed. However, due to the large size of the device, the cost of adding a heat dissipation device increases significantly, making it difficult to popularize it. Reducing the speed directly leads to a decrease in centrifugal efficiency and an increase in working time costs. Summary of the invention

[0005] The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. The specific purpose of the present invention is to provide a lithium recovery device in lithium battery waste electrolyte to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a lithium recovery device in waste electrolyte of lithium battery, comprising three supporting legs, extraction towers are fixedly arranged on the top of the three supporting legs, a top cover is fixedly arranged on the top of the extraction tower, an adjustment mechanism is arranged on the top of the top cover, a protective shell is arranged on the top of the top cover, a centrifugal shaft is fixedly arranged on the bottom of the adjustment mechanism, a baffle is fixedly arranged on the outer wall of the centrifugal shaft, a mixing mechanism is fixedly arranged on the end of the centrifugal shaft, a fixed disk is fixedly arranged on the bottom of the mixing mechanism, four connecting columns are arranged on the top of the fixed disk, a rotating drum is fixedly arranged on the top of the four connecting columns, a light phase outlet is arranged on the top of the rotating drum, a light phase weir is rotatably arranged on the top of the rotating drum, a heavy phase outlet is arranged on the side wall of the top of the rotating drum, a heavy phase weir is rotatably arranged on the top of the rotating drum, four shock-absorbing springs are arranged on the bottom of the fixed disk, an overheating protection mechanism is arranged on the side wall of the extraction tower, a light phase inlet is fixedly arranged on the side wall of the extraction tower, a heavy phase inlet is fixedly arranged on the side wall of the extraction tower, and a rotating ring is rotatably arranged on the bottom of the fixed disk.

[0007] Preferably, the overheating protection mechanism includes a first rack, a first wedge block, three baffles, three second wedge blocks, a heat conductive block, a piston plate, a liquid storage box, an L-shaped connecting rod, a mounting plate, a second rack, a second gear, a first gear and a rotating shaft, wherein the rotating shaft is rotatably arranged at the bottom of the rotating ring, the mounting plate is fixedly arranged on the outer side wall of the extraction tower, the liquid storage box is fixedly arranged on the side wall of the mounting plate, the piston plate is slidably arranged inside the liquid storage box, the L-shaped connecting rod is fixedly arranged on the top of the piston plate, the second rack is fixedly arranged on the end of the L-shaped connecting rod, the first gear and the second gear are both rotatably arranged on the side wall of the mounting plate, and the first gear and the second gear are coaxially fixedly connected, the first wedge block is slidably arranged on the side wall of the mounting plate, the first rack is fixedly arranged on the top of the first wedge block, the three baffles are plugged into the side wall of the extraction tower, the three second wedge blocks are respectively fixedly arranged on the side walls of the three baffles, and the two ends of the heat conductive block are respectively fixedly arranged on the outer wall of the extraction tower and the side wall of the liquid storage box.

[0008] Preferably, kerosene is contained in the liquid storage box below the piston plate.

[0009] Preferably, the adjustment mechanism includes a third wedge block, an adjustment motor, a U-shaped slide, a first conical block, an adjustment spring, a slider, an L-shaped adjustment rod and a second conical block, the L-shaped adjustment rod is rotatably sleeved on the side wall of the centrifugal shaft, the third wedge block is fixedly set on the top of the L-shaped adjustment rod, the second conical block is fixedly set on the top of the centrifugal shaft, the U-shaped slide is slidably set on the top of the top cover, the adjustment motor is fixedly set on the top of the U-shaped slide, the first conical block is fixedly set on the output shaft of the adjustment motor, the slider is rotatably set on the end of the output shaft of the adjustment motor, and the adjustment spring is fixedly set on the side wall of the slider.

[0010] Preferably, the first conical block and the second conical block are meshed with each other, and the third wedge block is in abutment with the U-shaped slide plate.

[0011] Preferably, the mixing mechanism includes five mixing plates, five mixing shafts, five first bevel gears, a second bevel gear, a limit block, a mixing column and a protective cover. The mixing column is fixedly arranged at the bottom of the extraction tower, the second bevel gear is rotatably arranged on the top of the fixed disk, the protective cover is fixedly arranged on the top of the fixed disk, the five mixing shafts are rotatably arranged in a circular array on the side wall of the protective cover, the five mixing plates are respectively fixedly arranged at one end of the five mixing shafts, the five first bevel gears are respectively fixedly arranged at the other end of the five mixing shafts, a circular hole is arranged at the center of the second bevel gear, and the limit block is arranged on the side wall of the circular hole.

[0012] Preferably, the side wall of the mixing column is provided with a spiral groove for the limiting block to slide, and the five first bevel gears are all meshed with the second bevel gears.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The present invention realizes adaptive reduction of the centrifugal speed as the temperature rises by setting the third wedge block, the adjustment motor, the U-shaped slide plate, the first conical block, the adjustment spring, the slider, the L-shaped adjustment rod and the second conical block, and cooperates with the centrifugal shaft speed adjustment to ensure that the temperature is prevented from continuously rising by reducing the centrifugal shaft speed under high temperature environmental conditions, and can ensure the centrifugal efficiency by increasing the centrifugal length of the centrifugal shaft while avoiding the problem of emulsification of the internal extract due to excessively high temperature of the extraction tower, avoid damage to the extraction tower caused by continuous temperature rise, and ensure the service life of the extraction tower. The invention has strong applicability and is worthy of promotion.

[0015] (2) The present invention realizes adjusting the length of the centrifugal shaft and the drum by sensing the temperature inside the extraction tower through the arrangement of the first rack, the first wedge-shaped block, three baffles, three second wedge-shaped blocks, the heat-conducting block, the piston plate, the liquid storage box, the L-shaped connecting rod, the mounting plate, the second rack, the second gear, the first gear and the rotating shaft, thereby increasing the centrifugal efficiency of the device. Through the arrangement of the shock-absorbing spring, it is also possible to squeeze the shock-absorbing spring when the centrifugal shaft moves downward, thereby increasing its shock-absorbing performance, and avoiding the centrifugal vibration caused by the extension of the centrifugal shaft, which affects the centrifugal extraction effect;

[0016] (3) The present invention realizes the change of the inclination angle of the mixing plate through the arrangement of five mixing plates, five mixing shafts, five first bevel gears, a second bevel gear, a limit block, a mixing column and a protective cover, thereby increasing the shear effect of the mixed extract and the waste electrolyte, and adaptively adjusting the rotation speed to avoid excessive mixing or incomplete mixing, thereby improving the subsequent centrifugal separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the present invention;

[0019] Figure 3 It is a schematic cross-sectional structure diagram of the overheat protection mechanism of the present invention;

[0020] Figure 4 It is a schematic diagram of the bottom structure of the rotating ring of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the regulating mechanism of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the mixing mechanism of the present invention;

[0023] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0024] In the figure: 1, extraction tower; 2, light phase inlet; 3, heavy phase inlet; 4, overheat protection mechanism; 41, first rack; 42, first wedge block; 43, baffle; 44, second wedge block; 45, heat transfer block; 46, piston plate; 47, liquid storage box; 48, L-shaped connecting rod; 49, mounting plate; 410, second rack; 411, second gear; 412, first gear; 413, rotating shaft; 5, mixing mechanism; 51, mixing plate; 52, mixing shaft; 53, first bevel gear; 54, second bevel gear; 55, stop block; 56, Mixing column; 57, protective cover; 7, adjusting mechanism; 71, third wedge block; 72, adjusting motor; 73, U-shaped slide plate; 74, first conical block; 75, adjusting spring; 76, slider; 77, L-shaped adjusting rod; 78, second conical block; 8, protective shell; 9, heavy phase outlet; 91, heavy phase weir plate; 10, light phase outlet; 101, light phase weir plate; 11, supporting leg; 12, top cover; 13, centrifugal shaft; 14, baffle plate; 15, drum; 16, fixed plate; 17, shock-absorbing spring; 18, connecting column; 19, rotating ring. DETAILED DESCRIPTION

[0025] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-7An embodiment of the present invention is as follows: a device for recovering lithium from waste electrolyte of a lithium battery, comprising three supporting legs 11, an extraction tower 1 is fixedly arranged on the top of the three supporting legs 11, a top cover 12 is fixedly arranged on the top of the extraction tower 1, an adjusting mechanism 7 is arranged on the top of the top cover 12, a protective shell 8 is arranged on the top of the top cover 12, a centrifugal shaft 13 is fixedly arranged on the bottom of the adjusting mechanism 7, a baffle 14 is fixedly arranged on the outer wall of the centrifugal shaft 13, a mixing mechanism 5 is fixedly arranged on the end of the centrifugal shaft 13, a fixed disk 16 is fixedly arranged on the bottom of the mixing mechanism 5, and a fixed disk 16 is arranged on the top of the fixed disk 16 Four connecting columns 18 are arranged, and a drum 15 is fixedly arranged on the top of the four connecting columns 18. A light phase outlet 10 is arranged on the top of the drum 15. A light phase weir plate 101 is rotatably arranged on the top of the drum 15. A heavy phase outlet 9 is arranged on the top side wall of the drum 15. A heavy phase weir plate 91 is rotatably arranged on the top of the drum 15. Four shock-absorbing springs 17 are arranged on the bottom of the fixed plate 16. An overheating protection mechanism 4 is arranged on the side wall of the extraction tower 1. A light phase inlet 2 is fixedly arranged on the side wall of the extraction tower 1. A heavy phase inlet 3 is fixedly arranged on the side wall of the extraction tower 1. A rotating ring 19 is rotatably arranged on the bottom of the fixed plate 16. First, the waste electrolyte and the extract are injected into the extraction tower 1 from the heavy phase inlet 3 and the light phase inlet 2 respectively, and then the centrifugal shaft 13 and the drum 15 are driven to rotate synchronously through the adjusting mechanism 7, and the mixing mechanism 5 is driven by the adjusting mechanism 7 to mix the extract and the waste electrolyte evenly. When the temperature continues to rise, the centrifugal shaft 13 and the drum 15 are driven to move downward synchronously through the overheating protection mechanism 4. It is worth noting that the top and the middle of the drum 15 are retractable structures. The speed of the adjusting mechanism 7 is controlled by the three gears of the overheating protection mechanism 4 so that the speed of the centrifugal shaft 13 is reduced, and the mixing angle of the mixing mechanism 5 is synchronously driven to change by the downward movement of the centrifugal shaft 13, thereby increasing the shear mixing effect of the mixing mechanism 5 and the drum 15 on the extract and the waste electrolyte, so that when the speed is reduced, a certain mixing effect can still be maintained. Through the rotation of the centrifugal shaft 13 and the drum 15, the light phase and the heavy phase are separated and flow out from the light phase outlet 10 and the heavy phase outlet 9 respectively, so that the lithium ions can be separated and extracted.

[0027] Specifically, the overheat protection mechanism 4 includes a first rack 41, a first wedge block 42, three baffles 43, three second wedge blocks 44, a heat conducting block 45, a piston plate 46, a liquid storage box 47, an L-shaped connecting rod 48, a mounting plate 49, a second rack 410, a second gear 411, a first gear 412 and a rotating shaft 413, wherein the rotating shaft 413 is rotatably arranged at the bottom of the rotating ring 19, the mounting plate 49 is fixedly arranged on the outer side wall of the extraction tower 1, the liquid storage box 47 is fixedly arranged on the side wall of the mounting plate 49, the piston plate 46 is slidably arranged inside the liquid storage box 47, and the L-shaped connecting rod 48 is fixedly arranged on the piston plate 4 6 top, the second rack 410 is fixedly arranged at the end of the L-shaped connecting rod 48, the first gear 412 and the second gear 411 are both rotatably arranged on the side wall of the mounting plate 49, and the first gear 412 and the second gear 411 are coaxially fixedly connected, the first wedge block 42 is slidably arranged on the side wall of the mounting plate 49, the first rack 41 is fixedly arranged on the top of the first wedge block 42, the three baffles 43 are plugged into the side wall of the extraction tower 1, the three second wedge blocks 44 are respectively fixedly arranged on the side walls of the three baffles 43, and the two ends of the heat conductive block 45 are respectively fixedly arranged on the outer wall of the extraction tower 1 and the side wall of the liquid storage box 47. The piston plate 46 drives the L-shaped connecting rod 48 to move upward, and the connecting rod moves upward to drive the second rack 410 to move upward, and the second rack 410 moves upward to drive the second gear 411 to rotate, and the rotation of the second gear 411 drives the first gear 412 to rotate synchronously, and the rotation of the first gear 412 drives the first rack 41 to move downward, and the downward movement of the first rack 41 drives the first wedge block 42 to move downward synchronously, and the first wedge block 42 moves downward to abut against the second wedge block 44, and the second wedge block 44 drives the baffle 43 to be pulled out, and the withdrawal of the baffle 43 releases the rotation. The ring 19 is limited so that the centrifugal shaft 13 and the drum 15 can be synchronously moved downward by a certain distance under the action of gravity, and the fixed ring can be synchronously driven downward to compress the shock-absorbing spring 17; the length of the centrifugal shaft 13 and the drum 15 can be adjusted by sensing the temperature inside the extraction tower 1, so that the centrifugal efficiency of the device is increased. Through the setting of the shock-absorbing spring 17, the shock-absorbing spring 17 can be squeezed in response to the downward movement of the centrifugal shaft 13 to increase its shock-absorbing performance, thereby avoiding the sharp increase of centrifugal vibration caused by the extension of the centrifugal shaft 13 affecting the centrifugal extraction effect.

[0028] Specifically, kerosene is contained in the liquid storage box 47 below the piston plate 46. The heat inside the extraction tower 1 is transferred through the heat conducting block 45, and the kerosene expands due to the heat, driving the piston plate 46 to move upward.

[0029] Specifically, the adjustment mechanism 7 includes a third wedge block 71, an adjustment motor 72, a U-shaped slide 73, a first conical block 74, an adjustment spring 75, a slider 76, an L-shaped adjustment rod 77 and a second conical block 78. The L-shaped adjustment rod 77 is rotatably sleeved on the side wall of the centrifugal shaft 13, the third wedge block 71 is fixedly set on the top of the L-shaped adjustment rod 77, the second conical block 78 is fixedly set on the top of the centrifugal shaft 13, the U-shaped slide 73 is slidably set on the top of the top cover 12, the adjustment motor 72 is fixedly set on the top of the U-shaped slide 73, the first conical block 74 is fixedly set on the output shaft of the adjustment motor 72, the slider 76 is rotatably set on the end of the output shaft of the adjustment motor 72, and the adjustment spring 75 is fixedly set on the side wall of the slider 76. The second conical block 78 and the L-shaped adjusting rod 77 are driven downward by the centrifugal shaft 13, and the L-shaped adjusting rod 77 is driven downward to drive the third wedge block 71 downward. The third wedge block 71 moves downward to resist the movement of the U-shaped slide plate 73, and the movement of the U-shaped slide plate 73 drives the adjusting motor 72 and the first conical block 74 to move synchronously, so that the first conical block 74 and the second conical block 78 always maintain meshing transmission. After the adjustment is completed, the centrifugal shaft 13 and the drum 15 are driven to rotate by the output shaft of the adjusting motor 72 to centrifuge the internal lithium ions; the centrifugal speed is adaptively reduced as the temperature rises, and the speed adjustment of the centrifugal shaft 13 is coordinated to ensure that the temperature is prevented from continuously rising by reducing the speed of the centrifugal shaft 13 under high temperature environmental conditions, and the centrifugal length of the centrifugal shaft 13 is increased to ensure the centrifugal efficiency while avoiding the problem of emulsification of the internal extract caused by the excessive temperature of the extraction tower 1, and avoid damage to the extraction tower 1 caused by continuous temperature rise, thereby ensuring the service life of the extraction tower 1, having strong applicability and being worthy of promotion.

[0030] Specifically, the first tapered block 74 and the second tapered block 78 are meshed with each other, and the third wedge block 71 is in abutment with the U-shaped slide plate 73 .

[0031] Specifically, the mixing mechanism 5 includes five mixing plates 51, five mixing shafts 52, five first bevel gears 53, a second bevel gear 54, a limit block 55, a mixing column 56 and a protective cover 57. The mixing column 56 is fixedly arranged at the bottom of the extraction tower 1, the second bevel gear 54 is rotatably arranged on the top of the fixed disk 16, the protective cover 57 is fixedly arranged on the top of the fixed disk 16, the five mixing shafts 52 are rotatably arranged in a circular array on the side wall of the protective cover 57, the five mixing plates 51 are respectively fixedly arranged at one end of the five mixing shafts 52, the five first bevel gears 53 are respectively fixedly arranged at the other end of the five mixing shafts 52, a circular hole is arranged at the center of the second bevel gear 54, and the limit block 55 is arranged on the side wall of the circular hole. The downward movement of the centrifugal shaft 13 drives the fixed plate 16 and the protective cover 57 to move downward synchronously, the downward movement of the protective cover 57 drives the second bevel gear 54 to move downward, the downward movement of the second bevel gear 54 drives the limit block 55 to move downward synchronously, the limit block 55 moves downward and rotates along the mixing column 56 at the same time, the rotation of the second bevel gear 54 drives the first bevel gear 53 to rotate, and the rotation of the first bevel gear 53 drives the mixing shaft 52 and the mixing plate 51 to rotate synchronously; the shearing effect of the mixed extract and the waste electrolyte is increased by changing the inclination angle of the mixing plate 51, and the rotation is adaptively adjusted according to the rotation speed to avoid excessive mixing or incomplete mixing, thereby improving the subsequent centrifugal separation efficiency.

[0032] Specifically, a spiral groove for the limiting block 55 to slide is provided on the side wall of the mixing column 56 , and the five first bevel gears 53 are all meshed with the second bevel gears 54 .

[0033] Working principle: First, the waste electrolyte and the extract are injected into the extraction tower 1 from the heavy phase inlet 3 and the light phase inlet 2 respectively, and then the centrifugal shaft 13 and the drum 15 are driven to rotate synchronously by adjusting the output shaft of the motor 72, and the mixing plate 51 is driven to rotate synchronously to mix the extract and the waste electrolyte. When the temperature continues to rise, the overheating protection mechanism 4 drives the centrifugal shaft 13 and the drum 15 to move downward synchronously. It is worth noting that the top and the middle of the drum 15 are retractable structures, and the piston plate 46 drives the L-shaped connecting rod 48 to move upward, and the upward movement of the connecting rod drives the second rack 410 to move upward. The second rack 410 moves upward and drives the second gear 411 to rotate. The rotation of the second gear 411 drives the first gear 412 to rotate synchronously. The rotation of the first gear 412 drives the first rack 41 to move downward. The downward movement of the first rack 41 drives the first wedge block 42 to move downward synchronously. The first wedge block 42 moves downward and contacts the second wedge block 44. The second wedge block 44 drives the baffle plate 43 to be pulled out. The withdrawal of the baffle plate 43 releases the limit on the rotating ring 19, so that the centrifugal shaft 13 and the drum 15 move downward synchronously for a certain distance under the action of gravity, and synchronously drives the fixed ring to move downward to compress the shock-absorbing spring 17, thereby increasing its shock-absorbing performance. The centrifugal shaft 13 moves downward to drive the second conical block 78 and the L-shaped adjusting rod 77 to move downward, and the L-shaped adjusting rod 77 moves downward to drive the third wedge block 71 to move downward, and the third wedge block 71 moves downward to resist the movement of the U-shaped slide 73, and the movement of the U-shaped slide 73 drives the adjustment motor 72 and the first conical block 74 to move synchronously, so that the first conical block 74 and the second conical block 78 always maintain meshing transmission. After the adjustment is completed, the centrifugal shaft 13 and the drum 15 are driven to rotate by the output shaft of the adjustment motor 72 to centrifuge the internal lithium ions, and the fixed plate 16 and the protective cover 57 are driven downward synchronously by the centrifugal shaft 13. The protective cover 57 moves downward, driving the second bevel gear 54 to move downward, the second bevel gear 54 moves downward, driving the limit block 55 to move downward synchronously, the limit block 55 moves downward and rotates along the mixing column 56 at the same time, the second bevel gear 54 rotates to drive the first bevel gear 53 to rotate, the first bevel gear 53 rotates to drive the mixing shaft 52 and the mixing plate 51 to rotate synchronously, so that when the speed is reduced, a certain mixing effect can still be maintained, and the light phase and the heavy phase are separated by the rotation of the centrifugal shaft 13 and the drum 15, and flow out from the light phase outlet 10 and the heavy phase outlet 9 respectively, so that the lithium ions can be separated and extracted.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for recovering lithium from waste electrolyte of a lithium battery, comprising three supporting legs (11), an extraction tower (1) being fixedly arranged on the top of the three supporting legs (11), a top cover (12) being fixedly arranged on the top of the extraction tower (1), characterized in that: The top of the top cover (12) is provided with an adjustment mechanism (7), the top of the top cover (12) is provided with a protective shell (8), the bottom of the adjustment mechanism (7) is provided with a centrifugal shaft (13), the outer wall of the centrifugal shaft (13) is sleeved with a baffle plate (14), the end of the centrifugal shaft (13) is fixedly provided with a mixing mechanism (5), the bottom of the mixing mechanism (5) is fixedly provided with a fixed disk (16), the top of the fixed disk (16) is provided with four connecting columns (18), the top of the four connecting columns (18) is fixedly provided with a rotating drum (15), and the top of the rotating drum (15) is provided with A light phase outlet (10) is provided, a light phase weir plate (101) is rotatably provided on the top of the rotary drum (15), a heavy phase outlet (9) is provided on the side wall of the top of the rotary drum (15), a heavy phase weir plate (91) is rotatably provided on the top of the rotary drum (15), four shock absorbing springs (17) are provided on the bottom of the fixed disk (16), an overheating protection mechanism (4) is provided on the side wall of the extraction tower (1), a light phase inlet (2) is fixedly provided on the side wall of the extraction tower (1), a heavy phase inlet (3) is fixedly provided on the side wall of the extraction tower (1), and a rotating ring (19) is rotatably provided on the bottom of the fixed disk (16).

2. The device for recovering lithium from waste electrolyte of lithium batteries according to claim 1, characterized in that: The overheat protection mechanism (4) comprises a first rack (41), a first wedge block (42), three baffles (43), three second wedge blocks (44), a heat conducting block (45), a piston plate (46), a liquid storage box (47), an L-shaped connecting rod (48), a mounting plate (49), a second rack (410), a second gear (411), a first gear (412) and a rotating shaft (413), wherein the rotating shaft (413) is rotatably arranged at the bottom of the rotating ring (19), the mounting plate (49) is fixedly arranged on the outer side wall of the extraction tower (1), the liquid storage box (47) is fixedly arranged on the side wall of the mounting plate (49), the piston plate (46) is slidably arranged inside the liquid storage box (47), and the L-shaped connecting rod (48) is fixedly arranged on the piston The first gear (412) and the second gear (411) are both rotatably mounted on the side wall of the mounting plate (49), and the first gear (412) and the second gear (411) are coaxially fixedly connected. The first wedge block (42) is slidably mounted on the side wall of the mounting plate (49), the first gear (41) is fixedly mounted on the top of the first wedge block (42), the three baffles (43) are plugged into the side wall of the extraction tower (1), the three second wedge blocks (44) are respectively fixedly mounted on the side walls of the three baffles (43), and the two ends of the heat conductive block (45) are respectively fixedly mounted on the outer wall of the extraction tower (1) and the side wall of the liquid storage box (47).

3. The device for recovering lithium from waste electrolyte of lithium batteries according to claim 2, characterized in that: Kerosene is contained in the liquid storage box (47) below the piston plate (46).

4. The device for recovering lithium from waste electrolyte of lithium batteries according to claim 1, characterized in that: The adjusting mechanism (7) comprises a third wedge block (71), an adjusting motor (72), a U-shaped slide plate (73), a first conical block (74), an adjusting spring (75), a slider (76), an L-shaped adjusting rod (77) and a second conical block (78); the L-shaped adjusting rod (77) is rotatably sleeved on the side wall of the centrifugal shaft (13); the third wedge block (71) is fixedly arranged on the top of the L-shaped adjusting rod (77); the second conical block (78) is fixedly arranged on the top of the centrifugal shaft (13); the U-shaped slide plate (73) is slidably arranged on the top of the top cover (12); the adjusting motor (72) is fixedly arranged on the top of the U-shaped slide plate (73); the first conical block (74) is fixedly arranged on the output shaft of the adjusting motor (72); the slider (76) is rotatably arranged on the end of the output shaft of the adjusting motor (72); and the adjusting spring (75) is fixedly arranged on the side wall of the slider (76).

5. The device for recovering lithium from waste electrolyte of lithium batteries according to claim 4, characterized in that: The first conical block (74) and the second conical block (78) are meshed with each other, and the third wedge block (71) is in abutment with the U-shaped slide plate (73).

6. The device for recovering lithium from waste electrolyte of lithium batteries according to claim 1, characterized in that: The mixing mechanism (5) comprises five mixing plates (51), five mixing shafts (52), five first bevel gears (53), a second bevel gear (54), a stopper (55), a mixing column (56) and a protective cover (57); the mixing column (56) is fixedly arranged at the bottom of the extraction tower (1); the second bevel gear (54) is rotatably arranged on the top of the fixed disk (16); the protective cover (57) is fixedly arranged on the top of the fixed disk (16); the five mixing shafts (52) are rotatably arranged in a circular array on the side wall of the protective cover (57); the five mixing plates (51) are respectively fixedly arranged at one end of the five mixing shafts (52); the five first bevel gears (53) are respectively fixedly arranged at the other end of the five mixing shafts (52); a circular hole is arranged at the center of the second bevel gear (54); and the stopper (55) is arranged on the side wall of the circular hole.

7. The device for recovering lithium from waste electrolyte of lithium batteries according to claim 6, characterized in that: The side wall of the mixing column (56) is provided with a spiral groove for the limiting block (55) to slide, and the five first bevel gears (53) are all meshed with the second bevel gears (54).

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