Vacuum stirrer for lithium battery material production

Abstract

The utility model discloses a vacuum stirrer for lithium battery material production, which relates to the field of lithium battery processing and comprises a bottom plate, a stirring barrel is arranged at the top end of the bottom plate, a vertical plate is arranged on one side of the top end of the bottom plate, and a top plate, two groups of limiting columns and a control panel are sequentially arranged on one side of the vertical plate from top to bottom. A lifting mechanism matched with the two sets of limiting columns is arranged at the bottom end of the top plate, a plurality of supporting columns are arranged at the bottom end of the lifting mechanism, a cover body is arranged at the bottom ends of the supporting columns, a liquid feeding port and a solid feeding port are symmetrically formed in the top end of the cover body, and a crushing mechanism is arranged in the solid feeding port; a stirring mechanism matched with the stirring barrel is arranged in the middle of the top end of the cover body, and a sealing assembly matched with the stirring barrel is arranged at the bottom end of the inner surface of the cover body. According to the utility model, solid materials can be smashed firstly, the stirring barrel can form a vacuum environment, a more uniform and thorough stirring effect is achieved, and meanwhile, the stirring mechanism can be disassembled after being used so as to be convenient to clean and maintain.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery processing, and specifically, to a vacuum mixer for lithium battery material production. Background Art

[0002] A lithium battery is a type of battery that uses lithium as the anode material. They are the most common type of battery in modern mobile devices because of their high energy density, light weight, long lifespan, and fast charging characteristics. The application scope of lithium batteries is very wide, and they can be found in many fields such as smartphones, laptops, electric vehicles, and renewable energy storage systems. In the production process of lithium batteries, electrode manufacturing is a very important step, and the preparation of positive electrode slurry and negative electrode slurry is particularly crucial. The positive electrode slurry is composed of components such as adhesives, conductive agents, and positive electrode materials, while the negative electrode slurry is mainly composed of materials such as adhesives and graphite carbon powder. The preparation process of both positive and negative electrode slurries involves complex steps such as mutual mixing, dissolution, and dispersion between liquids and liquids, and between liquids and solids. Therefore, the quality of slurry dispersion will directly determine the quality of subsequent lithium-ion battery production and the performance of its final products. A vacuum mixer is an industrial device used for material mixing. It combines the functions of dispersion and mixing, and is very useful for processes such as mixing, reaction, dispersion, dissolution, homogenization, and emulsification of liquid-liquid, solid-liquid materials. In lithium battery manufacturing, a vacuum mixer can ensure the uniformity of material mixing, remove air bubbles, control humidity, prevent contamination, improve production efficiency, and ensure production safety. However, after the mixing operation of the existing vacuum mixer is completed, the mixing device cannot be effectively cleaned and maintained, which affects subsequent use and maintenance. Therefore, there is an urgent need for a vacuum mixer that is easy to disassemble.

[0003] For example, the Chinese patent with the authorization announcement number CN215586268U discloses a vacuum mixer for lithium battery processing with uniform dispersion, including an installation base. The left side of the top of the installation base is fixedly connected with an installation frame. The top of the installation frame is fixedly connected with an installation box. The bottom of the installation box is fixedly connected with a protective cylinder. A lifting mechanism is arranged inside the installation frame. The bottom of the installation box and inside the protective cylinder is provided with a mixing mechanism. The bottom of the protective cylinder is fixedly connected with a reinforcing ring.

[0004] Although the vacuum mixer for lithium battery processing with uniform dispersion ensures the sealing performance and vacuum degree between the mixing cylinder and the protective cylinder, after the mixing operation is completed, the mixing device cannot be effectively cleaned and maintained, which affects subsequent use and maintenance.

[0005] Regarding the problems in the related technology, no effective solution has been proposed yet. Summary of the Utility Model

[0006] In view of the problems in the related art, the present utility model provides a vacuum mixer for the production of lithium battery materials to overcome the above-mentioned technical problems existing in the prior related art.

[0007] For this purpose, the specific technical solution adopted by the present utility model is as follows:

[0008] A vacuum mixer for the production of lithium battery materials includes a bottom plate. A mixing barrel is provided at the top end of the bottom plate. A vertical plate is provided on one side of the top end of the bottom plate. A top plate, two groups of limit columns and a control panel are sequentially arranged on one side of the vertical plate from top to bottom. A lifting mechanism matching with the two groups of limit columns is provided at the bottom end of the top plate. A plurality of support columns are provided at the bottom end of the lifting mechanism. A cover body is provided at the bottom end of the support column. A liquid feed port and a solid feed port are symmetrically arranged at the top end of the cover body. A crushing mechanism is arranged inside the solid feed port; a mixing mechanism matching with the mixing barrel is provided in the middle of the top end of the cover body. A sealing assembly matching with the mixing barrel is provided at the bottom end of the inner surface of the cover body.

[0009] Further, in order to complete the lifting of the cover body, a closed space can be formed when mixing materials are needed. At the same time, when the mixing mechanism needs to be cleaned and maintained, the cover body can be lifted to provide necessary space for the mixing mechanism. Sliding grooves matching with the lifting mechanism are respectively opened on one side of the two groups of limit columns; the lifting mechanism includes a motor I arranged at the bottom end of the top plate. A rotating shaft is provided at the output end of the motor I. External threads are sleeved at both ends of the rotating shaft, and the thread directions of the external threads at both ends of the rotating shaft are opposite. Sliding blocks are symmetrically arranged at both ends of the external threads. Protrusions are arranged on both sides of the sliding block. One of the protrusions is connected with a rotating rod I on the circumferential outer side. The bottom end of the rotating rod I is connected with a rotating rod II matching with the other protrusion. Convex blocks are symmetrically arranged on the outer side of the rotating rod I. Support blocks are arranged on the outer side of the convex block. A disc matching with the support column is provided at the bottom end of the support block. Long strip convex blocks matching with the sliding grooves are arranged on both sides of the disc.

[0010] Further, in order to form a vacuum environment under the action of an external vacuum pump, effectively remove the bubbles in the materials, avoid the influence of bubbles on the mixing effect, and at the same time, it is also beneficial to prevent the materials from oxidizing and deteriorating, a plurality of hollow grooves matching with the sealing assembly are uniformly opened at the inner top end of the cover body. Limit through holes matching with the sealing assembly are opened at the top ends of the hollow grooves; the sealing assembly includes a sealing ring arranged at the bottom end of the cover body. A plurality of rubber soft blocks matching with the hollow grooves and the limit through holes are arranged at the top end of the sealing ring. Rounded corners matching with the limit through holes are arranged at the ends of the rubber soft blocks.

[0011] Furthermore, in order to effectively crush solid materials, ensure that the solid materials are fully mixed and dispersed during the stirring process, and the crushed solid materials can be more evenly distributed in the stirring barrel and effectively mixed with liquid or other solid materials to ultimately achieve an ideal stirring effect, the crushing mechanism includes a second motor disposed at the top end of the cover body. The output end of the second motor penetrates through one side of the solid material inlet, and a first rotating shaft is provided. An active gear is disposed outside the first rotating shaft. A driven gear is meshed on one side of the active gear. The middle of the driven gear penetrates through one side of the solid material inlet and is inserted with a second rotating shaft that cooperates with the first rotating shaft. A plurality of crushing knives are disposed outside both the first rotating shaft and the second rotating shaft.

[0012] Furthermore, in order to facilitate the disassembly of the stirring blades and the stirring rods, which greatly simplifies the cleaning and maintenance processes, the cross - setting of the stirring blades and the stirring rods ensures that the materials can be stirred from multiple directions during the mixing and stirring, achieving a more uniform and thorough stirring effect. The stirring mechanism includes a third motor disposed at the top end of the cover body. The output end of the third motor is provided with a clamping member. A rotating rod is disposed at the bottom end of the clamping member. A plurality of stirring blades are evenly disposed outside the rotating rod. A plurality of stirring rods are inserted through the top ends of the stirring blades; The clamping member includes a long rod disposed at the bottom end of the third motor. A T - shaped clamping groove is formed at the top end of the long rod. A first limiting groove is formed on one side of the long rod. A long strip clamping block is disposed at the bottom end of the long rod; The clamping member includes a T - shaped clamping block disposed at the top end of the rotating rod. A second limiting groove and a long strip clamping groove are sequentially formed on one side of the rotating rod from top to bottom. And the first limiting groove and the second limiting groove are connected by a limiting rod and a nut.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1) With the combined action of the stirring barrel, the lifting mechanism, the cover body, the sealing assembly, the crushing mechanism and the stirring mechanism of the present utility model, solid materials can be broken first, making it easier to mix during the stirring process. The stirring barrel can form a vacuum environment, achieving a more uniform and thorough stirring effect. At the same time, the stirring mechanism can be disassembled after use for cleaning and maintenance.

[0015] 2) With the combined action of the lifting mechanism and the sealing assembly, a vacuum environment is formed under the action of an external vacuum pump, effectively removing air bubbles in the materials, avoiding the influence of air bubbles on the stirring effect, and at the same time providing necessary space for the disassembly of the stirring mechanism.

[0016] 3) With the combined action of the crushing mechanism and the stirring mechanism, solid materials can be broken first, making it easier to mix during the stirring process. The materials can be stirred from multiple directions during the mixing and stirring, achieving a more uniform and thorough stirring effect. At the same time, it can be conveniently disassembled, greatly simplifying the cleaning and maintenance processes. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of a vacuum mixer for producing lithium battery materials according to an embodiment of the present invention;

[0019] Figure 2 is a schematic cross-sectional view of a vacuum mixer for producing lithium battery materials according to an embodiment of the present invention;

[0020] Figure 3 is Figure 2 a partial enlarged view of part A in

[0021] Figure 4 is a schematic structural diagram of a sealing component in a vacuum mixer for producing lithium battery materials according to an embodiment of the present invention;

[0022] Figure 5 is a schematic structural diagram of a stirring mechanism in a vacuum mixer for producing lithium battery materials according to an embodiment of the present invention;

[0023] Figure 6 is a schematic structural diagram of a crushing mechanism in a vacuum mixer for producing lithium battery materials according to an embodiment of the present invention;

[0024] Figure 7 is a schematic structural diagram of a lifting mechanism in a vacuum mixer for producing lithium battery materials according to an embodiment of the present invention.

[0025] In the figure:

[0026] 1. Bottom plate; 2. Stirring barrel; 3. Vertical plate; 4. Top plate; 5. Limit post; 501. Sliding groove; 6. Control panel; 7. Lifting mechanism; 701. Motor 1; 702. Rotating shaft; 703. External thread; 704. Sliding block; 705. Protrusion; 706. Rotating rod 1; 707. Rotating rod 2; 708. Cam; 709. Support block; 710. Disc; 711. Long strip cam; 8. Support column; 9. Cover body; 901. Hollow groove; 902. Limit through hole; 10. Liquid feed port; 11. Solid feed port; 12. Crushing mechanism; 1201. Motor 2; 1202. Shaft 1; 1203. Driving gear; 1204. Driven gear; 1205. Shaft 2; 1206. Crushing knife; 13. Stirring mechanism; 1301. Motor 3; 1302. Clamping part; 13021. Long rod; 13022. T-shaped clamping groove; 13023. Limit groove 1; 13024. Long strip clamping block; 13025. T-shaped clamping block; 13026. Limit groove 2; 13027. Long strip clamping groove; 13028. Limit rod; 13029. Nut; 1303. Rotating rod; 1304. Stirring blade; 1305. Stirring rod; 14. Sealing assembly; 1401. Sealing ring; 1402. Rubber soft block; 1403. Rounded corner. Detailed implementation manners

[0027] To further illustrate each embodiment, the present invention provides drawings. These drawings are a part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0028] According to an embodiment of the present invention, a vacuum mixer for lithium battery material production is provided.

[0029] Now, the present invention will be further described in conjunction with the drawings and specific implementation manners, as Figures 1-7As shown, the vacuum mixer for the production of lithium battery materials according to an embodiment of the present utility model includes a bottom plate 1. A mixing barrel 2 is provided at the top end of the bottom plate 1. A vertical plate 3 is provided on one side of the top end of the bottom plate 1. On one side of the vertical plate 3, a top plate 4, two groups of limit posts 5 and a control panel 6 are sequentially arranged from top to bottom. A lifting mechanism 7 matching with the two groups of limit posts 5 is provided at the bottom end of the top plate 4. A plurality of support posts 8 are provided at the bottom end of the lifting mechanism 7. A cover body 9 is provided at the bottom end of the support posts 8. A liquid feed port 10 and a solid feed port 11 are symmetrically provided at the top end of the cover body 9. A crushing mechanism 12 is provided inside the solid feed port 11. A mixing mechanism 13 matching with the mixing barrel 2 is provided in the middle of the top end of the cover body 9. A sealing assembly 14 matching with the mixing barrel 2 is provided at the bottom end of the inner surface of the cover body 9.

[0030] With the aid of the above technical solution, in the present utility model, under the combined action of the mixing barrel 2, the lifting mechanism 7, the cover body 9, the sealing assembly 14, the crushing mechanism 12 and the mixing mechanism 13, the solid materials can be first broken up to make them more easily mixed during the mixing process. The mixing barrel 2 can form a vacuum environment to achieve a more uniform and thorough mixing effect. At the same time, the mixing mechanism 13 can be disassembled after use for cleaning and maintenance; under the combined action of the lifting mechanism 7 and the sealing assembly 14, a vacuum environment is formed under the action of an external vacuum pump, effectively removing the air bubbles in the materials, avoiding the influence of air bubbles on the mixing effect, and at the same time providing necessary space for the disassembly of the mixing mechanism 13; under the combined action of the crushing mechanism 12 and the mixing mechanism 13, the solid materials can be first broken up to make them more easily mixed during the mixing process. The materials can be mixed and stirred from multiple directions during the mixing and stirring, achieving a more uniform and thorough mixing effect, and at the same time being convenient for disassembly, greatly simplifying the cleaning and maintenance process.

[0031] It should be explained that air extraction nozzles are externally connected to the inlets of the liquid feed port 10 and the solid feed port 11, and the air extraction nozzles are connected to the vacuum pump to create a vacuum environment before the mixing operation. In actual operation, when it is necessary to feed materials into the liquid feed port 10 and the solid feed port 11, the air extraction nozzles are removed. After the feeding is completed, the air extraction nozzles are reconnected to continue using. The vacuum pumps are electrically connected to the control panel. The vacuum pumps are prior art and will not be described in detail here.

[0032] In one embodiment, for the above-mentioned lifting mechanism 7, sliding grooves 501 matching the lifting mechanism 7 are provided on one side of the two groups of limit posts 5; the lifting mechanism 7 includes a first motor 701 arranged at the bottom end of the top plate 4, and the output end of the first motor 701 is provided with a rotating shaft 702. External threads 703 are sleeved at both ends of the rotating shaft 702, and the thread directions of the external threads 703 at both ends of the rotating shaft 702 are opposite. Sliding blocks 704 are symmetrically arranged at both ends of the external threads 703. Protrusions 705 are arranged on both sides of the sliding blocks 704. A first rotating rod 706 is connected to the outer circumference of one group of protrusions 705, and the bottom end of the first rotating rod 706 is connected to a second rotating rod 707 matching the other group of protrusions 705. Convex blocks 708 are symmetrically arranged on the outer side of the first rotating rod 706, support blocks 709 are arranged on the outer side of the convex blocks 708, a disc 710 matching the support column 8 is arranged at the bottom end of the support block 709, and long strip convex blocks 711 matching the sliding grooves 501 are arranged on both sides of the disc, thereby completing the lifting of the cover body 9. When it is necessary to mix materials, a closed space can be formed. At the same time, when the mixing mechanism 13 needs to be cleaned and maintained, the cover body 9 can be lifted to provide necessary space for the mixing mechanism 13.

[0033] The working principle of the lifting mechanism 7 is as follows: Under the action of the control panel 6, the first motor 701 is controlled and started. Under the action of the output shaft of the first motor 701, the rotating shaft 702 is driven to rotate. During the rotation of the rotating shaft 702, the sliding blocks 704 are driven to move. The sliding blocks 704 are respectively sleeved at positions where the thread directions of the external threads 703 at both ends of the rotating shaft 702 are opposite. During the rotation of the rotating shaft 702, the sliding blocks 704 will be driven to move towards each other in the horizontal direction of the rotating shaft 702. Under the action of the protrusions 705, the first rotating rod 706 and the second rotating rod 707 are respectively driven to move towards each other during the movement of the sliding blocks 704. Under the supporting action of the convex blocks 708 and the support blocks 709, the disc 710 is driven to move in the vertical direction during the movement of the first rotating rod 706 and the second rotating rod 707 towards each other. Under the limiting action of the long strip convex blocks 711 and the sliding grooves 501, the disc 710 moves stably in the vertical direction. Under the action of the support column 8, the cover body 9 is driven to move in the vertical direction during the movement of the disc 710 in the vertical direction, realizing the position adjustment of the cover body 9.

[0034] In one embodiment, for the sealing assembly 14, a number of hollow slots 901 that cooperate with the sealing assembly 14 are evenly formed at the inner top end of the cover 9, and a limit through hole 902 that cooperates with the sealing assembly 14 is formed at the top end of the hollow slot 901; the sealing assembly 14 includes a sealing ring 1401 disposed at the bottom end of the cover 9, and a number of rubber soft blocks 1402 that cooperate with the hollow slots 901 and the limit through holes 902 are disposed at the top end of the sealing ring 1401. A rounded corner 1403 that cooperates with the limit through hole 902 is disposed at the end of the rubber soft block 1402, thereby forming a vacuum environment under the action of an external vacuum pump, effectively removing air bubbles in the material, avoiding the influence of air bubbles on the stirring effect, and at the same time being conducive to preventing the material from oxidizing and deteriorating.

[0035] The working principle of the sealing assembly 14 is as follows: In the initial state, the staff inserts the rounded corner 1403 at the top end of the rubber soft block 1402 in the sealing assembly 14 into the hollow slot 901 of the cover 9. Under the cooperation of the hollow slot 901 and the rubber soft block 1402 and the cooperation of the limit through hole 902 and the rounded corner 1403, the sealing assembly 14 and the cover 9 are perfectly matched. Then, the cover 9 is placed on the stirring barrel 2 through the lifting mechanism 7, and the three form a good sealing effect. By means of a vacuum pump, a vacuum environment is formed inside the stirring barrel 2.

[0036] In one embodiment, for the crushing mechanism 12, the crushing mechanism 12 includes a second motor 1201 disposed at the top end of the cover 9. The output end of the second motor 1201 penetrates through one side of the solid feed port 11 and is provided with a first rotating shaft 1202. A driving gear 1203 is disposed on the outer side of the first rotating shaft 1202. A driven gear 1204 is meshed on one side of the driving gear 1203. The middle of the driven gear 1204 penetrates through one side of the solid feed port 11 and is inserted with a second rotating shaft 1205 that cooperates with the first rotating shaft 1202. A number of crushing knives 1206 are disposed on the outer sides of the first rotating shaft 1202 and the second rotating shaft 1205, thereby being able to effectively crush solid materials, ensuring that the solid materials are fully mixed and dispersed during the stirring process. The crushed solid materials can be more evenly distributed in the stirring barrel 2 and effectively mixed with liquid or other solid materials, ultimately achieving an ideal stirring effect.

[0037] The working principle of the crushing mechanism 12 is as follows: Under the action of the control panel 6, the second motor 1201 is controlled and started. Driven by the output shaft of the second motor 1201, the first rotating shaft 1202 rotates clockwise. During the clockwise rotation of the first rotating shaft 1202, the driving gear 1203 and several crushing knives 1206 rotate clockwise. During the clockwise rotation of the driving gear 1203, the engaged driven gear 1204 rotates counterclockwise. During the counterclockwise rotation of the driven gear 1204, the second rotating shaft 1205 and several crushing knives 1206 rotate counterclockwise. During the process of the several crushing knives 1206 rotating towards each other, the solid material is crushed.

[0038] In one embodiment, for the stirring mechanism 13, the stirring mechanism 13 includes a third motor 1301 arranged at the top end of the cover body 9. A clamping member 1302 is arranged at the output end of the third motor 1301. A rotating rod 1303 is arranged at the bottom end of the clamping member 1302. Several stirring blades 1304 are evenly arranged on the outer side of the rotating rod 1303. Several stirring rods 1305 are inserted through the top ends of the stirring blades 1304; The clamping member 1302 includes a long rod 13021 arranged at the bottom end of the third motor 1301. A T-shaped clamping groove 13022 is opened at the top end of the long rod 13021. A first limiting groove 13023 is opened on one side of the long rod 13021. A long strip clamping block 13024 is arranged at the bottom end of the long rod 13021; The clamping member 1302 includes a T-shaped clamping block 13025 arranged at the top end of the rotating rod 1303. A second limiting groove 13026 and a long strip clamping groove 13027 are successively opened from top to bottom on one side of the rotating rod 1303. And the first limiting groove 13023 and the second limiting groove 13026 are connected by a limiting rod 13028 and a nut 13029, so that the stirring blades 1304 and the stirring rods 1305 can be conveniently disassembled, greatly simplifying the cleaning and maintenance process. The cross arrangement of the stirring blades 1304 and the stirring rods 1305 ensures that the material can be stirred from multiple directions during the mixing and stirring process, achieving a more uniform and thorough stirring effect.

[0039] The working principle of the stirring mechanism 13 is as follows: Under the action of the control panel 6, the third motor 1301 is controlled and started. Driven by the output shaft of the third motor 1301, the clamping member 1302 rotates. During the rotation of the clamping member 1302, the rotating rod 1303 rotates. During the rotation of the rotating rod 1303, several stirring blades 1304 rotate. During the rotation of the several stirring blades 1304, several stirring rods 1305 rotate. The stirring rods 1305 on the stirring blades 1304 between the upper and lower adjacent groups rotate in a staggered arrangement, realizing multi-directional stirring of the mixed material.

[0040] The working principle of the clamping member 1302 is as follows: During installation, align the plane between the T-shaped clamping block 13025 of the rotating rod 1303 and the second limiting groove 13026 with the plane between the T-shaped clamping groove 13022 of the long rod 13021 and the first limiting groove 13023. Apply a force to the left to make the planes of the rotating rod 1303 and the long rod 13021 fit together. Then apply a force upward until the T-shaped clamping block 13025 and the T-shaped clamping groove 13022 are engaged, and the long strip clamping block 13024 and the long strip clamping groove 13027 are also engaged. At this time, the first limiting groove 13023 and the second limiting groove 13026 are opposite in position. Pass the limiting rod 13028 through the through hole formed by the first limiting groove 13023 and the second limiting groove 13026, and then fasten the nut 13029 together to form a detachable and stable structure between the long rod 13021 and the rotating rod 1303.

[0041] To facilitate the understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0042] In actual application, in the initial state, under the action of the control panel 6, the operator controls and starts the lifting mechanism 7. Under the action of the lifting mechanism 7, the cover body 9 is fastened on the mixing barrel 2. Under the action of the sealing component 14, a closed space is formed between the mixing barrel 2 and the cover body 9. Place the required materials into the mixing barrel 2 through the liquid feed port 10 and the solid feed port 11 respectively. When the solid material is too large, under the action of the control panel 6, the crushing mechanism 12 can be controlled and started. Under the action of the crushing mechanism 12, the solid material is crushed and then enters the mixing barrel 2. Subsequently, an external air extraction nozzle is installed on the liquid feed port 10 and the solid feed port 11. Under the action of the control panel 6, the vacuum pump is controlled and started. Under the action of the vacuum pump, a vacuum environment is formed inside the mixing barrel 2. At this time, under the action of the control panel 6, the mixing mechanism 13 is controlled and started. Under the action of the mixing mechanism 13, the mixing of the materials is completed. After the mixing operation is completed, under the action of the control panel 6, the operator controls and starts the lifting mechanism 7. Under the action of the lifting mechanism 7, the cover body 9 is lifted, and under the action of the clamping member 1302, the disassembly of the mixing mechanism 13 is completed.

[0043] It should be noted that during the mixing process of the positive and negative electrode materials of lithium batteries, the required materials are mixed active materials (positive active materials include nickel cobalt manganese oxides, nickel cobalt aluminum oxides, lithium iron phosphate, etc., and negative active materials include graphite, silicon-based materials, tin-based materials, etc.), conductive agents (such as carbon black or conductive polymers), binders (such as polyvinylidene fluoride or other polymers), and solvents (such as N-methylpyrrolidone, water, or other suitable solvents); after mixing, the materials are usually in a slurry state, suitable for subsequent coating and shaping processes; during mixing, the temperature and humidity need to be strictly controlled to ensure the performance and stability of the materials. The temperature should be controlled at room temperature (20 - 25 °C), and the humidity should be maintained in a low humidity environment (generally below 30% relative humidity).

[0044] The working principles of the lifting mechanism 7, the sealing assembly 14, the crushing mechanism 12, and the mixing mechanism 13 are as shown above.

[0045] In summary, with the above technical solutions of the present utility model, under the combined action of the mixing barrel 2, the lifting mechanism 7, the cover body 9, the sealing assembly 14, the crushing mechanism 12, and the mixing mechanism 13, the solid materials can be first broken, making them easier to mix during the mixing process. The mixing barrel 2 can form a vacuum environment to achieve a more uniform and thorough mixing effect. At the same time, the mixing mechanism 13 can be disassembled after use for cleaning and maintenance; under the combined action of the lifting mechanism 7 and the sealing assembly 14, a vacuum environment can be formed under the action of an external vacuum pump, effectively removing the bubbles in the materials, avoiding the influence of bubbles on the mixing effect, and at the same time providing necessary space for the disassembly of the mixing mechanism 13; under the combined action of the crushing mechanism 12 and the mixing mechanism 13, the solid materials can be first broken, making them easier to mix during the mixing process. The materials can be mixed from multiple directions during the mixing and stirring, achieving a more uniform and thorough mixing effect, and at the same time being convenient for disassembly, greatly simplifying the cleaning and maintenance process.

[0046] In the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0047] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vacuum mixer for the production of lithium battery materials, including a bottom plate (1), characterized in that, A stirring barrel (2) is arranged at the top end of the bottom plate (1). A vertical plate (3) is arranged on one side of the top end of the bottom plate (1). A top plate (4), two groups of limiting columns (5) and a control panel (6) are sequentially arranged on one side of the vertical plate (3) from top to bottom. A lifting mechanism (7) matched with the two groups of limiting columns (5) is arranged at the bottom end of the top plate (4). A plurality of support columns (8) are arranged at the bottom end of the lifting mechanism (7). A cover body (9) is arranged at the bottom end of the support column (8). A liquid feed port (10) and a solid feed port (11) are symmetrically arranged at the top end of the cover body (9). A crushing mechanism (12) is arranged inside the solid feed port (11). A stirring mechanism (13) matched with the stirring barrel (2) is arranged in the middle of the top end of the cover body (9). A sealing assembly (14) matched with the stirring barrel (2) is arranged at the bottom end of the inner surface of the cover body (9).

2. The vacuum mixer for the production of lithium battery materials according to claim 1, wherein, Sliding grooves (501) matched with the lifting mechanism (7) are opened on one side of the two groups of limiting columns (5).

3. A vacuum mixer for producing lithium battery materials according to claim 2, characterized in that, The lifting mechanism (7) includes a motor one (701) arranged at the bottom end of the top plate (4). A rotating shaft (702) is arranged at the output end of the motor one (701). External threads (703) are sleeved at both ends of the rotating shaft (702), and the thread directions of the external threads (703) at both ends of the rotating shaft (702) are opposite. Sliding blocks (704) are symmetrically arranged at both ends of the external threads (703). Protrusions (705) are arranged on both sides of the sliding block (704). A rotating rod one (706) is connected to the outer circumference of one group of protrusions (705). A rotating rod two (707) matched with the other group of protrusions (705) is connected to the bottom end of the rotating rod one (706). Convex blocks (708) are symmetrically arranged on the outer side of the rotating rod one (706). A support block (709) is arranged on the outer side of the convex block (708). A disc (710) matched with the support column (8) is arranged at the bottom end of the support block (709). Long strip convex blocks (711) matched with the sliding groove (501) are arranged on both sides of the disc.

4. A vacuum mixer for the production of lithium battery materials according to claim 1, characterized in that, A plurality of hollow slots (901) matched with the sealing assembly (14) are uniformly opened at the inner top end of the cover body (9). Limiting through holes (902) matched with the sealing assembly (14) are opened at the top ends of the hollow slots (901).

5. A vacuum mixer for producing lithium battery materials according to claim 1, characterized in that, The crushing mechanism (12) includes a second motor (1201) arranged at the top end of the cover body (9). The output end of the second motor (1201) penetrates through one side of the solid feed inlet (11) and is provided with a first rotating shaft (1202). An active gear (1203) is arranged on the outer side of the first rotating shaft (1202). A driven gear (1204) is meshed on one side of the active gear (1203). The middle part of the driven gear (1204) penetrates through one side of the solid feed inlet (11) and is inserted with a second rotating shaft (1205) that cooperates with the first rotating shaft (1202). A plurality of crushing knives (1206) are arranged on the outer sides of the first rotating shaft (1202) and the second rotating shaft (1205).

6. The vacuum mixer for producing lithium battery materials according to claim 1, wherein, The stirring mechanism (13) includes a third motor (1301) arranged at the top end of the cover body (9). A clamping member (1302) is arranged at the output end of the third motor (1301). A rotating rod (1303) is arranged at the bottom end of the clamping member (1302). A plurality of stirring blades (1304) are evenly arranged on the outer side of the rotating rod (1303). A plurality of stirring rods (1305) are inserted through the top ends of the stirring blades (1304).

7. The vacuum mixer for producing lithium battery materials according to claim 6, characterized in that, The clamping member (1302) includes a long rod (13021) arranged at the bottom end of the third motor (1301). A T-shaped clamping groove (13022) is formed at the top end of the long rod (13021). A first limiting groove (13023) is formed on one side of the long rod (13021). A long strip clamping block (13024) is arranged at the bottom end of the long rod (13021). The clamping member (1302) includes a T-shaped clamping block (13025) arranged at the top end of the rotating rod (1303). A second limiting groove (13026) and a long strip clamping groove (13027) are sequentially formed on one side of the rotating rod (1303) from top to bottom. The first limiting groove (13023) and the second limiting groove (13026) are connected by a limiting rod (13028) and a nut (13029).

8. A vacuum mixer for the production of lithium battery materials according to claim 4, characterized in that, The sealing assembly (14) includes a sealing ring (1401) arranged at the bottom end of the cover body (9). A plurality of rubber soft blocks (1402) that cooperate with the hollow groove (901) and the limiting through holes (902) are arranged at the top end of the sealing ring (1401). A rounded corner (1403) that cooperates with the limiting through holes (902) is arranged at the end of the rubber soft block (1402).

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