Recovery and regeneration treatment device for electrolyte for lithium ion battery

Abstract

The utility model discloses a recycling and regenerating treatment device for electrolyte for a lithium ion battery, and belongs to the technical field of lithium battery electrolyte treatment. The recycling and regenerating treatment device for the electrolyte for the lithium ion battery comprises a treatment tank, a Y-shaped pipe is fixed to a liquid outlet in the outer side of the treatment tank, the two ends, away from the treatment tank, of the Y-shaped pipe are fixedly connected and communicated to the same filter box, a feeding hopper is fixed to a feeding port in the edge of the top end of the treatment tank, and a partition plate is fixedly connected to the inner wall of the filter box. According to the switching type plugging structure, one hand wheel rotates the two-way screws, the two-way screws are made to rotate in the same direction by being matched with the action of a plurality of components, the screwing directions of threads on the two-way screws are opposite, and therefore the two plugging balls a can move away from each other while the two plugging balls a can move away from each other. The two plugging balls b move oppositely through linkage, so that the two ends, away from the treatment tank, of the Y-shaped pipe can be switched to be in the plugging state, and the other two liquid outlet pipes can also be switched to be in the plugging state at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery electrolyte treatment, and in particular relates to a recycling and regeneration treatment device for lithium ion battery electrolyte. Background Art

[0002] Electrolyte is a type of tool mainly used in the field of lithium batteries. Electrolyte is a medium used in chemical batteries, electrolytic capacitors, etc. When the waste lithium batteries are recycled, they need to be processed, and the electrolyte in the lithium battery needs to be processed separately. After adding a neutralizer, the metal impurities remaining in the electrolyte are separated from the main liquid structure of the electrolyte, and then regenerated and used. When the electrolyte is recycled and regenerated, the metal impurities and other impurities in the electrolyte need to be separated from the electrolyte liquid to obtain a regenerated electrolyte stock solution.

[0003] The prior art lithium-ion battery electrolyte recovery and regeneration treatment device has the following disadvantages during use: on the one hand, the neutralizer is fully fed from the feeding hopper together with the electrolyte, resulting in uneven mixing effect between the neutralizer and the electrolyte in the mixing structure, which in turn makes the impurities not completely decomposed and the use effect poor;

[0004] Secondly, a filtering structure is generally used to filter the regenerated electrolyte from which impurities are decomposed. However, the filter needs to be replaced after a long period of use, and when replacing it, the machine needs to be shut down for a long time to replace the filtering structure, which affects the regeneration efficiency of the electrolyte during the downtime. Therefore, a recycling and regeneration device for the electrolyte for lithium-ion batteries is needed. Utility Model Content

[0005] The purpose of the utility model is to provide a recycling and regeneration device for lithium-ion battery electrolyte to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A recycling and regeneration device for lithium-ion battery electrolyte, comprising a treatment tank, a Y-shaped tube is fixed at the outer liquid outlet of the treatment tank, two ends of the Y-shaped tube away from the treatment tank are fixedly connected to the same filter box, a feeding hopper is fixed at the feed inlet at the top edge of the treatment tank, a partition is fixedly connected to the inner wall of the filter box, both sides of the partition are provided with filter screens movably inserted on the top of the filter box, the filter screens are provided with openings, the top of the filter box is provided with insertion channels matched with the filter screens, two symmetrically arranged liquid outlets of a side wall of the filter box away from the Y-shaped tube are fixed with liquid outlet pipes, a motor is fixedly connected to the center of the top of the treatment tank, the output shaft of the motor extends into the treatment tank and is fixedly connected to a stirring shaft, and a plurality of stirring rods are fixedly connected to the outer side of the stirring shaft;

[0008] It also includes a switchable plugging structure and an intermittent overlap structure. The switchable plugging structure is installed on the filter box. The switchable plugging structure can facilitate the switchable plugging of the two ends of the Y-shaped tube away from the treatment tank. In addition, it can also switchable plugging of the two liquid outlet pipes, so that the two filter screens can be switched for use;

[0009] The intermittent overlap structure is installed on the stirring shaft and is located inside the processing tank. The intermittent overlap structure enables the neutralizer in the feeding hopper to intermittently enter the processing tank and be stirred and mixed with the electrolyte to decompose its impurities.

[0010] Preferably, the switchable sealing structure includes bidirectional screws rotatably connected to both side walls of the filter box through bearing seats, the threads on the two bidirectional screws have opposite rotation directions, one end of the two bidirectional screws are rotatably connected to the outside of the treatment tank through a connecting seat, and the other ends of the two bidirectional screws are fixedly connected to a handwheel.

[0011] Preferably, the outer sides of the two bidirectional screws are respectively threadedly connected with two symmetrically arranged guide rods a and two symmetrically arranged guide rods b, the two guide rods b and the two guide rods a are movably inserted on the filter box, and the ends of the two guide rods a located inside the filter box are fixedly connected with sealing balls a, and the ends of the two guide rods b located inside the filter box are fixedly connected with sealing balls b.

[0012] Preferably, sprockets a are fixedly connected to the outer sides of the two bidirectional screws, and a chain is transmission-connected between the two sprockets a.

[0013] Preferably, the intermittent overlap structure includes a rotating disk fixed to the outside of the stirring shaft, and the rotating disk moves in the processing tank.

[0014] Preferably, the rotating disk is provided with a plurality of through holes arranged in a circular array, and the plurality of through holes can intermittently overlap with the bottom end of the feeding hopper when the rotating disk rotates.

[0015] Compared with the prior art, the lithium-ion battery electrolyte recovery and regeneration treatment device provided by the utility model has at least the following beneficial effects:

[0016] (1) Through the switchable plugging structure, the bidirectional screws are rotated by one of the hand wheels, and multiple components are coordinated to make the two bidirectional screws rotate in the same direction. However, the threads on the two bidirectional screws rotate in opposite directions, so that the two blocking balls a can move away from each other and move towards each other in conjunction with each other, so that the two ends of the Y-shaped tube away from the treatment tank can switch their blocking states, and the other two liquid outlet pipes can also switch their blocking states at the same time. When one filter screen is pulled out and replaced, the other filter screen can continue to perform filtering work, thereby reducing the downtime for replacement and greatly improving the efficiency of electrolyte recovery and regeneration.

[0017] (2) By setting up the intermittent overlap structure, when the motor drives the stirring shaft to rotate, the rotating disk is also rotated, and when each through hole overlaps with the bottom of the hopper, the neutralizer in the hopper can intermittently fall into the treatment tank and mix with the electrolyte pre-added in the treatment tank to decompose impurities, making the decomposition more thorough and the decomposition effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of each component in the switchable plugging structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of each component in the intermittent overlap structure of the utility model.

[0021] In the figure:

[0022] 1. Treatment tank; 2. Y-type tube; 3. Feed hopper; 4. Motor; 41. Stirring shaft; 42. Stirring rod; 5. Filter box; 51. Filter screen; 511. Opening; 52. Partition; 53. Liquid outlet pipe; 6. Switchable plugging structure; 61. Bidirectional screw; 62. Guide rod a; 63. Guide rod b; 64. Connecting seat; 65. Blocking ball a; 66. Blocking ball b; 67. Sprocket a; 68. Chain; 69. Handwheel; 7. Intermittent overlap structure; 71. Rotating disk; 72. Through hole. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the embodiments.

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0025] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0026] Example

[0027] On the one hand, the neutralizing agent is fully fed from the feeding hopper 3 together with the electrolyte, resulting in uneven mixing effect between the neutralizing agent and the electrolyte in the mixing structure, which in turn makes the impurities not completely decomposed and the use effect poor;

[0028] Secondly, a filtering structure is generally used to filter the regenerated electrolyte that has decomposed impurities. However, the filter needs to be replaced after a long period of use, and when replacing it, it takes a long time to stop the machine to replace the filtering structure, which affects the regeneration efficiency of the electrolyte during this period of downtime;

[0029] To do this, see Figure 1-3 The utility model provides a recycling and regeneration treatment device for electrolyte for lithium ion batteries, comprising: a treatment tank 1, a Y-shaped tube 2 is fixed at the outer liquid outlet of the treatment tank 1, two ends of the Y-shaped tube 2 away from the treatment tank 1 are fixedly connected to the same filter box 5, a feeding hopper 3 is fixed at the feed inlet at the top edge of the treatment tank 1, a partition 52 is fixedly connected to the inner wall of the filter box 5, both sides of the partition 52 are provided with filter screen plates 51 movably inserted on the top of the filter box 5, the filter screen plates 51 are provided with openings 511, the top of the filter box 5 is provided with insertion channels matched with the filter screen plates 51, and two symmetrically arranged liquid outlets of the side wall of the filter box 5 away from the Y-shaped tube 2 are fixed with liquid outlet pipes 53, a motor 4 is fixedly connected to the center of the top of the treatment tank 1, the output shaft of the motor 4 extends into the treatment tank 1, and is fixedly connected to a stirring shaft 41, and a plurality of stirring rods 42 are fixedly connected to the outer side of the stirring shaft 41;

[0030] It also includes a switchable plugging structure 6 and an intermittent overlap structure 7. The switchable plugging structure 6 is installed on the filter box 5. The switchable plugging structure 6 can facilitate switching and plugging of the two ends of the Y-shaped tube 2 away from the treatment tank 1, and can also switch and plug the two liquid outlet pipes 53, so that the two filter screens 51 can be switched for use;

[0031] The intermittent overlap structure 7 is installed on the stirring shaft 41 and is located inside the processing tank 1. The intermittent overlap structure 7 enables the neutralizer in the feeding hopper 3 to intermittently enter the processing tank 1 and be stirred and mixed with the electrolyte to decompose its impurities.

[0032] The opening 511 is provided to facilitate manual extraction of the filter screen plate 51. Figure 3 The bottom end of the hopper 3 shown in the figure is connected to the processing tank 1 through the corresponding through hole 72 below it, and an electric valve is installed on one end of the Y-shaped tube 2 located inside the processing tank 1.

[0033] Further as Figure 1-3 As shown, it is worth specifically explaining that in order to enable the two ends of the Y-shaped tube 2 away from the treatment tank 1 to switch the blocking state, and at the same time, the blocking state of the two liquid outlet pipes 53 can be switched at the same time, so a switchable blocking structure 6 is provided, including a bidirectional screw 61 rotatably connected through a bearing seat on both side walls of the filter box 5, the threads on the two bidirectional screws 61 are rotated in opposite directions, one end of the two bidirectional screws 61 is rotatably connected to the outside of the treatment tank 1 through a connecting seat 64, and the other end of the two bidirectional screws 61 is fixedly connected to a hand wheel 69 The outer sides of the two bidirectional screw rods 61 are respectively threadedly connected with two symmetrically arranged guide rods a62 and two symmetrically arranged guide rods b63. ​​The two guide rods b63 and the two guide rods a62 are movably inserted on the filter box 5. The ends of the two guide rods a62 located on the inner side of the filter box 5 are fixedly connected with sealing balls a65. The ends of the two guide rods b63 located on the inner side of the filter box 5 are fixedly connected with sealing balls b66. The outer sides of the two bidirectional screw rods 61 are fixedly connected with sprockets a67. A chain 68 is transmission-connected between the two sprockets a67.

[0034] Among them, Figure 2 As shown in the figure, the two blocking balls a65 respectively block one end of the Y-shaped tube 2 and the liquid outlet pipe 53 corresponding to the one end, while the two blocking balls b66 do not respectively block the other end of the Y-shaped tube 2 and the liquid outlet pipe 53 corresponding to the other end.

[0035] Further as Figure 1-3As shown, it is worth explaining in detail that in order to allow the neutralizer in the feeding hopper 3 to intermittently enter the processing tank 1, an intermittent overlap structure 7 is provided, including a rotating disk 71 fixed to the outside of the stirring shaft 41, and the rotating disk 71 moves in the processing tank 1. The rotating disk 71 is provided with a plurality of through holes 72 arranged in a circular array, and the plurality of through holes 72 can intermittently overlap with the bottom end of the feeding hopper 3 when the rotating disk 71 rotates.

[0036] In summary: when using the lithium-ion battery electrolyte recovery and regeneration processing device, the pre-prepared electrolyte can be transported from the feed hopper 3 to the processing tank 1. In addition, by starting the motor 4, the stirring shaft 41 drives the multiple stirring rods 42 to rotate. In addition, the neutralizer is poured into the feed hopper 3, so that the multiple through holes 72 on the turntable can intermittently overlap with the feed hopper 3, so that the neutralizer in the feed hopper 3 can intermittently fall into the processing tank 1, so that the electrolyte can be neutralized and decomposed. The effect of impurities is good. Thereafter, after the decomposition is completed, the electric valve on the Y-tube 2 can be started, so that the decomposed electrolyte can enter the filter box 5 through the unsealed end of the Y-tube 2, and the impurities in the electrolyte can be intercepted by the setting of the filter mesh plate 51, and the regenerated new electrolyte can The liquid can flow out from the unsealed liquid outlet pipe 53 for use. Later, when the filter screen plate 51 needs to be replaced, the bidirectional screw 61 can be rotated by the hand wheel 69, and the sprocket a67 and the chain 68 are configured to make the two bidirectional screws 61 rotate in the same direction. However, the threads on the two bidirectional screws 61 have opposite rotation directions, so that the two blocking balls a65 can move away from each other and the two blocking balls b66 can move towards each other, so that the two ends of the Y-shaped tube 2 away from the treatment tank 1 can switch their blocking states, and the other two liquid outlet pipes 53 can also switch their blocking states at the same time. When one filter screen plate 51 is pulled out and replaced, the other filter screen plate 51 can continue to perform filtering work, thereby reducing the downtime for replacement and greatly improving the efficiency of electrolyte recovery and regeneration.

[0037] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "including" or "comprising" and the like used in the present invention mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A recycling and regeneration device for lithium-ion battery electrolyte, comprising a processing tank (1), characterized in that: A Y-shaped tube (2) is fixed at the liquid outlet on the outside of the treatment tank (1), and the two ends of the Y-shaped tube (2) away from the treatment tank (1) are fixedly connected to the same filter box (5). A feeding hopper (3) is fixed at the feed inlet at the top edge of the treatment tank (1). A partition (52) is fixedly connected to the inner wall of the filter box (5). Both sides of the partition (52) are provided with filter screens (51) movably inserted on the top of the filter box (5). The filter screens (51) are provided with openings (511). The top of the filter box (5) is provided with insertion channels that match the filter screens (51). Liquid outlet pipes (53) are fixed at two symmetrically arranged liquid outlets provided on a side wall of the filter box (5) away from the Y-shaped tube (2). A motor (4) is fixedly connected at the center of the top of the treatment tank (1). The output shaft of the motor (4) extends into the treatment tank (1) and is fixedly connected to a stirring shaft (41). The outer side of the stirring shaft (41) is fixedly connected to a plurality of stirring rods (42). It also includes a switchable plugging structure (6) and an intermittent overlap structure (7), wherein the switchable plugging structure (6) is mounted on the filter box (5), and the switchable plugging structure (6) can facilitate switchable plugging of the two ends of the Y-shaped tube (2) away from the treatment tank (1), and can also switchable plugging of the two liquid outlet pipes (53), so that the two filter screens (51) can be switched for use; The intermittent overlap structure (7) is mounted on the stirring shaft (41) and is located inside the processing tank (1). The intermittent overlap structure (7) enables the neutralizer in the feeding hopper (3) to intermittently enter the processing tank (1) and be stirred and mixed with the electrolyte to decompose its impurities.

2. The device for recycling and regenerating electrolyte for lithium-ion batteries according to claim 1, characterized in that: The switchable plugging structure (6) comprises bidirectional screws (61) rotatably connected to both side walls of the filter box (5) via bearing seats, the threads on the two bidirectional screws (61) having opposite rotation directions, one end of the two bidirectional screws (61) being rotatably connected to the outside of the treatment tank (1) via a connecting seat (64), and the other ends of the two bidirectional screws (61) being fixedly connected to a hand wheel (69).

3. The device for recycling and regenerating electrolyte for lithium-ion batteries according to claim 2, characterized in that: The outer sides of the two bidirectional screw rods (61) are respectively threadedly connected with two symmetrically arranged guide rods a (62) and two symmetrically arranged guide rods b (63); the two guide rods b (63) and the two guide rods a (62) are movably inserted into the filter box (5); one end of the two guide rods a (62) located inside the filter box (5) is fixedly connected to a blocking ball a (65); and one end of the two guide rods b (63) located inside the filter box (5) is fixedly connected to a blocking ball b (66).

4. The device for recycling and regenerating electrolyte for lithium-ion batteries according to claim 3, characterized in that: The outer sides of the two bidirectional screw rods (61) are both fixedly connected with sprocket wheels a (67), and a chain (68) is transmission-connected between the two sprocket wheels a (67).

5. The device for recycling and regenerating electrolyte for lithium-ion batteries according to claim 1, characterized in that: The intermittent overlap structure (7) comprises a rotating disk (71) fixedly connected to the outside of the stirring shaft (41), and the rotating disk (71) moves in the processing tank (1).

6. The device for recycling and regenerating electrolyte for lithium-ion batteries according to claim 5, characterized in that: The rotating disk (71) is provided with a plurality of through holes (72) arranged in a circular array, and the plurality of through holes (72) can intermittently overlap with the bottom end of the feeding hopper (3) as the rotating disk (71) rotates.

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