Lithium battery slurry dispersion anti-settling device

Abstract

The utility model discloses a kind of lithium battery slurry dispersion anti-settling devices, including dispersion tank, stirring assembly, stirring assembly has with the upper end rotation connection of dispersion tank Hollow rod;The top of dispersion tank is integrated with circulating liquid extraction component, circulating liquid extraction component has the circulating pump in the top of dispersion tank, and the liquid inlet end of circulating pump extracts slurry in dispersion tank by first connecting pipe, and is transported to the second connecting pipe of the liquid outlet end of circulating pump;With the annular pipe of second connecting pipe communication located in the top of dispersion tank, and annular pipe is communicated with multiple liquid outlet pipes extending to the inside of dispersion tank;First connecting pipe is communicated with hollow rod, and by circulating pump, slurry in dispersion tank is pumped to second connecting pipe and is discharged again to dispersion tank by liquid outlet pipe.The device of the utility model optimizes slurry flow path, improves anti-settling effect, enhances dynamic mixing to prevent particle agglomeration, compact structure.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a lithium battery slurry dispersion and anti-sedimentation device. Background Technology

[0002] In the entire production process of lithium-ion batteries, the mixing and dispersion of lithium battery cell slurry is a crucial step that significantly impacts product quality. The quality of slurry dispersion directly affects the quality and performance of subsequent lithium-ion battery production. Lithium battery slurry mixing typically employs a dispersion tank and a rotating agitator. The agitator is driven by external force to rotate, completing the mixing process. After mixing, the slurry is discharged from the outlet at the bottom of the equipment.

[0003] In the prior art, Chinese utility model patent CN220878543U, entitled "A Lithium Battery Slurry Dispersion and Anti-Sedimentation Device," discloses a dispersion device that uses a circulation component to circulate the slurry from the bottom of the dispersion tank to the top, solving the problem of sedimentation or agglomeration of slurry caused by prolonged disuse, thus improving production efficiency and ensuring slurry quality. However, its circulation component consists of multiple pipes located outside the tank, which makes the outside of the tank more cluttered and increases the length of the circulation flow, reducing circulation efficiency.

[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a lithium battery slurry dispersion and anti-sedimentation device. Utility Model Content

[0005] The purpose of this invention is to provide a lithium battery slurry dispersion and anti-sedimentation device. This device optimizes the slurry flow path, improves the anti-sedimentation effect, enhances dynamic mixing to prevent particle agglomeration, and has a compact structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a lithium battery slurry dispersion and anti-sedimentation device, which includes:

[0008] Dispersion tank;

[0009] The stirring assembly is integrated into the dispersion tank, and the stirring assembly has a hollow rod extending axially along the dispersion tank and rotatably connected to the upper end of the dispersion tank. The lower end of the hollow rod extends to a position close to the bottom of the dispersion tank, and the lower part of the hollow rod is provided with a plurality of liquid inlet holes.

[0010] The top of the dispersion tank is integrated with a circulating pumping assembly. The circulating pumping assembly has a circulating pump located at the top of the dispersion tank. The inlet end of the circulating pump draws the slurry in the dispersion tank through a first connecting pipe and delivers it to a second connecting pipe at the outlet end of the circulating pump.

[0011] The second connecting pipe is connected to an annular pipe located at the top of the dispersion tank, and the annular pipe is connected to multiple liquid outlet pipes extending into the interior of the dispersion tank.

[0012] The first connecting pipe is connected to the hollow rod, and the slurry in the dispersion tank is pumped to the second connecting pipe by the circulating pump and discharged back into the dispersion tank by the outlet pipe.

[0013] Furthermore, a fixing ring is fixed to the outer periphery of the lower part of the dispersion tank, and multiple support legs are evenly distributed around the fixing ring. The lower end of each support leg has a fixing plate that is fixed to the ground.

[0014] Furthermore, the stirring assembly includes:

[0015] The hollow rod is rotatably connected to the top of the dispersion tank via a bearing;

[0016] Multiple stirring rods are disposed on both sides of the hollow rod, and all stirring rods are located above the liquid inlet; and

[0017] Multiple spaced-apart dispersing rods are fixed to the stirring rod.

[0018] Furthermore, the upper portion of the hollow rod extends to the outside of the dispersion tank;

[0019] The top of the dispersion tank is provided with a drive assembly for driving the hollow rod to rotate;

[0020] The driving component includes:

[0021] A drive motor, wherein a first pulley is mounted on the drive shaft of the drive motor;

[0022] A second pulley is connected to the upper end of the hollow rod, and the first pulley and the second pulley are connected by belt drive.

[0023] Furthermore, the first connecting tube extends into the interior of the hollow rod, and the first connecting tube and the hollow rod are rotatably connected by a sealed bearing, or a certain gap is reserved between the outer wall of the first connecting tube and the inner wall of the hollow rod.

[0024] Furthermore, when a certain gap is reserved between the first connecting tube and the hollow rod, the lower end of the first connecting tube extends to a position close to the liquid inlet.

[0025] Furthermore, the top of the dispersion tank has a liquid addition pipe, and the bottom of the dispersion tank has a liquid discharge pipe;

[0026] A first valve is installed on the liquid addition pipe, and a second valve is installed on the liquid discharge pipe.

[0027] Furthermore, the fixing plate is connected to the ground by anchor bolts.

[0028] In the above technical solution, the lithium battery slurry dispersion and anti-sedimentation device provided by this utility model has the following beneficial effects:

[0029] The device of this invention optimizes the slurry flow path and improves the anti-sedimentation effect: it adopts a circulation mode of "bottom center suction → top periphery spraying", which makes the slurry form a three-dimensional circulation flow in the tank, avoiding the dead corner sedimentation problem caused by traditional unidirectional flow, and improving the mixing uniformity by more than 30%.

[0030] The device of this invention enhances dynamic mixing and prevents particle agglomeration: the stirring rod and the dispersing rod work together to continuously shear during the slurry circulation process, destroying the particle agglomeration structure and ensuring uniform slurry dispersion.

[0031] The device of this utility model has a compact structure and reduces reliance on external pipelines: the circulating liquid pumping component is integrated into the top and inside of the dispersion tank, avoiding the problems of large space occupation and easy contamination caused by traditional external pipelines, while shortening the slurry circulation path and improving efficiency by more than 20%.

[0032] The device of this utility model is stable in operation and easy to maintain: belt drive reduces motor load and extends service life; the valve design of the liquid addition pipe and liquid discharge pipe facilitates quick feeding and cleaning, reducing maintenance time by 40%.

[0033] The support legs of this device are fixed with anchor bolts, which can be adapted to different production platforms, have strong vibration resistance, and are suitable for large-scale continuous production of lithium battery slurry. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0035] Figure 1 This is a schematic diagram of the structure of a lithium battery slurry dispersion and anti-sedimentation device disclosed in an embodiment of this application;

[0036] Figure 2 This is a cross-sectional view of a lithium battery slurry dispersion and anti-sedimentation device disclosed in an embodiment of this application;

[0037] Figure 3 This is a partial structural diagram of the stirring assembly of a lithium battery slurry dispersion and anti-sedimentation device disclosed in an embodiment of this application;

[0038] Figure 4 This is a schematic diagram of the structure of a circulating liquid extraction component of a lithium battery slurry dispersion and anti-sedimentation device disclosed in an embodiment of this application;

[0039] Figure 5 This is a schematic diagram of the drive component of a lithium battery slurry dispersion and anti-sedimentation device disclosed in an embodiment of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Dispersion tank; 2. Hollow rod; 3. Liquid inlet; 4. Circulation pump; 5. First connecting pipe; 6. Second connecting pipe; 7. Annular pipe; 8. Liquid outlet pipe; 9. Stirring rod; 10. Dispersion rod; 11. Drive motor; 12. Drive shaft; 13. First pulley; 14. Second pulley; 15. Belt; 16. Liquid inlet pipe; 17. Liquid outlet pipe; 18. Fixing ring; 19. Support leg; 20. Fixing plate. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0043] See Figures 1 to 5 As shown;

[0044] This embodiment discloses a lithium battery slurry dispersion and anti-sedimentation device. The device includes a dispersion tank 1; a stirring assembly integrated into the dispersion tank 1, and the stirring assembly has a hollow rod 2 extending along the axial direction of the dispersion tank 1 and rotatably connected to the upper end of the dispersion tank 1. The lower end of the hollow rod 2 extends to a position close to the bottom of the dispersion tank 1, and a plurality of liquid inlet holes 3 are opened in the lower part of the hollow rod 2.

[0045] The top of the dispersion tank 1 is integrated with a circulation pumping assembly. The circulation pumping assembly has a circulation pump 4 located at the top of the dispersion tank 1. The inlet end of the circulation pump 4 draws out the slurry in the dispersion tank 1 through the first connecting pipe 5 and delivers it to the outlet end of the circulation pump 4 through the second connecting pipe 6.

[0046] A ring pipe 7 located at the top of the dispersion tank 1 is connected to the second connecting pipe 6, and the ring pipe 7 is connected to multiple liquid outlet pipes 8 extending into the interior of the dispersion tank 1.

[0047] The first connecting pipe 5 is connected to the hollow rod 2, and the slurry in the dispersion tank 1 is pumped to the second connecting pipe 6 by the circulating pump 4 and discharged back into the dispersion tank 1 by the outlet pipe 8.

[0048] Specifically, this embodiment discloses a dispersion and anti-sedimentation device that integrates a circulating pumping component into the top and interior of a dispersion tank 1. It mainly includes a dispersion tank 1, a stirring component integrated into the dispersion tank 1, and a circulating pumping component integrated into the top of the dispersion tank 1 and partially disposed inside the dispersion tank 1. The stirring component in this embodiment is designed with a hollow rod 2 that is rotatably connected to the dispersion tank 1 and ensures that the slurry inside the dispersion tank 1 enters the tank. This rod not only serves as the stirring shaft of the stirring component but can also be used in conjunction with the circulating pumping component as a liquid inlet pipe during slurry circulation. Since the hollow rod 2 rotates during operation, the pumping pipe of the circulating pumping component in this embodiment needs a specific structure between itself and the hollow rod 2 to ensure that the rotation of the hollow rod 2 is not affected while ensuring that the circulating pumping component can pump liquid normally. Therefore, the first connecting pipe 5 mentioned above in this embodiment needs to have certain improvements in its connection with the hollow rod 2, which will be detailed below. In this embodiment, the dispersion tank 1 integrates the circulating liquid extraction component on the top and inside of the dispersion tank 1, which can effectively solve the various problems caused by integrating the circulation component on the outside of the tank in the prior art. The structure of this application is compact and simple.

[0049] In order to support and fix the dispersion tank 1 of this embodiment, a fixing ring 18 is fixed to the outer periphery of the lower part of the dispersion tank 1 of this embodiment, and multiple support legs 19 are evenly distributed around the fixing ring 18. The lower end of the support leg 19 has a fixing plate 20 fixed to the ground.

[0050] Preferably, the stirring assembly of this embodiment includes a hollow rod 2 rotatably connected to the top of the dispersion tank 1 via a bearing; multiple stirring rods 9 disposed on both sides of the hollow rod 2, and all stirring rods 9 being located above the liquid inlet 3; and multiple dispersion rods 10 fixed to the stirring rods 9 at intervals.

[0051] Secondly, in this embodiment, the upper part of the hollow rod 2 extends to the outside of the dispersion tank 1; at the same time, a drive assembly for driving the hollow rod 2 to rotate is provided on the top of the dispersion tank 1.

[0052] In a preferred embodiment, the drive assembly of this embodiment includes a drive motor 11, the drive shaft of which is equipped with a first pulley 13; and a second pulley 14 connected to the upper end of the hollow rod 2. The first pulley 13 and the second pulley 14 are connected by a belt 15.

[0053] First, this embodiment further defines the structure of the stirring assembly, which drives the first pulley 13 to rotate via the drive motor 11. The first pulley 13 and the second pulley 14 are connected by a belt 15. At this time, the second pulley 14 will also rotate along with the first belt 13. Subsequently, since the second pulley 14 is connected to the upper end of the hollow rod 2, it will drive the hollow rod 2 to rotate. In this embodiment, the hollow rod 2 is connected to the top of the dispersion tank 1 via a bearing, thereby ensuring the normal rotation of the hollow rod 2.

[0054] In this embodiment, the transmission of the pulley and belt 15 is used as the preferred implementation to drive the hollow rod 2 to rotate. However, those skilled in the art can easily replace it with a gear set or other structure to drive the hollow rod 2 to rotate. Therefore, the driving component is not strictly limited in this application, as long as it can drive the hollow rod 2 to rotate.

[0055] Based on the structure of the hollow rod 2 described above, in this embodiment, the first connecting tube 5 extends into the interior of the hollow rod 2; and the first connecting tube 5 and the hollow rod 2 are rotatably connected by a sealed bearing, or a certain gap is reserved between the outer wall of the first connecting tube 5 and the inner wall of the hollow rod 2.

[0056] Since the hollow rod 2 is rotating during operation, while the first connecting tube 5 cannot rotate, it is necessary to ensure that the first connecting tube 5 does not affect the rotation of the hollow rod 2 when pumping liquid. Therefore, this application has two solutions to solve this problem.

[0057] The first method is to use a sealed bearing to connect the first connecting pipe 5 and the hollow rod 2. That is, the first connecting pipe 5 is connected to the inner ring of the sealed bearing, while the hollow rod 2 is connected to the outer ring of the sealed bearing. This ensures that the hollow rod 2 can rotate relative to the first connecting pipe 5.

[0058] The second method is to directly adopt a structure in which the first connecting tube 5 and the hollow rod 2 are separated, leaving a certain gap between the outer wall of the first connecting tube 5 and the inner wall of the hollow rod 2, and then directly extending the lower end of the first connecting tube 5 to the liquid inlet 3.

[0059] Both of the above structures can ensure the rotation of the hollow rod 2 and the normal extraction of slurry by the first connecting pipe 5.

[0060] Specifically, when a certain gap is reserved between the first connecting tube 5 and the hollow rod 2, the lower end of the first connecting tube 5 extends to a position close to the liquid inlet 3.

[0061] Preferably, the top of the dispersion tank 1 in this embodiment has a liquid addition pipe 16, and the bottom of the dispersion tank 1 has a liquid discharge pipe 17;

[0062] A first valve is installed on the liquid addition pipe 16, and a second valve is installed on the liquid discharge pipe 17.

[0063] The fixing plate 20 is connected to the ground by anchor bolts.

[0064] In the above technical solution, the lithium battery slurry dispersion and anti-sedimentation device provided by this utility model has the following beneficial effects:

[0065] The device of this invention optimizes the slurry flow path and improves the anti-sedimentation effect: it adopts a circulation mode of "bottom center suction → top periphery spraying", which makes the slurry form a three-dimensional circulation flow in the tank, avoiding the dead corner sedimentation problem caused by traditional unidirectional flow, and improving the mixing uniformity by more than 30%.

[0066] The device of this invention enhances dynamic mixing and prevents particle agglomeration: the stirring rod 9 and the dispersing rod 10 work together to continuously shear during the slurry circulation process, destroying the particle agglomeration structure and ensuring uniform slurry dispersion.

[0067] The device of this utility model has a compact structure and reduces reliance on external pipelines: the circulating liquid pumping component is integrated into the top and inside of the dispersion tank 1, avoiding the problems of large space occupation and easy contamination caused by traditional external pipelines, while shortening the slurry circulation path and improving efficiency by more than 20%.

[0068] The device of this utility model is stable in operation and easy to maintain: the belt drive reduces the motor load and extends the service life; the valve design of the liquid addition pipe 16 and the liquid discharge pipe 17 facilitates quick feeding and cleaning, reducing maintenance time by 40%.

[0069] The support legs of this device are fixed with anchor bolts, which can be adapted to different production platforms, have strong vibration resistance, and are suitable for large-scale continuous production of lithium battery slurry.

[0070] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lithium battery slurry dispersion and anti-sedimentation device, characterized in that, The device includes: Dispersion tank (1); The stirring assembly is integrated into the dispersion tank (1), and the stirring assembly has a hollow rod (2) extending axially along the dispersion tank (1) and rotatably connected to the upper end of the dispersion tank (1). The lower end of the hollow rod (2) extends to a position close to the bottom of the interior of the dispersion tank (1), and the lower part of the hollow rod (2) is provided with a plurality of liquid inlet holes (3). The top of the dispersion tank (1) is integrated with a circulating pumping assembly. The circulating pumping assembly has a circulating pump (4) located at the top of the dispersion tank (1). The inlet end of the circulating pump (4) draws out the slurry in the dispersion tank (1) through the first connecting pipe (5) and delivers it to the outlet end of the circulating pump (4) through the second connecting pipe (6). A ring pipe (7) located at the top of the dispersion tank (1) is connected to the second connecting pipe (6), and the ring pipe (7) is connected to multiple outlet pipes (8) extending into the interior of the dispersion tank (1). The first connecting pipe (5) is connected to the hollow rod (2), and the slurry in the dispersion tank (1) is pumped to the second connecting pipe (6) by the circulating pump (4) and discharged back into the dispersion tank (1) by the outlet pipe (8).

2. The lithium battery slurry dispersion and anti-sedimentation device according to claim 1, characterized in that, The dispersion tank (1) is fixed with a fixing ring (18) on the outer periphery of the lower part, and the fixing ring (18) has multiple supporting legs (19) evenly distributed in the circumference. The lower end of the supporting leg (19) has a fixing plate (20) fixed to the ground.

3. The lithium battery slurry dispersion and anti-sedimentation device according to claim 1, characterized in that, The stirring assembly includes: The hollow rod (2) is rotatably connected to the top of the dispersion tank (1) via a bearing; Multiple stirring rods (9) are arranged on both sides of the hollow rod (2), and all stirring rods (9) are located above the liquid inlet (3); and Multiple spaced-apart dispersing rods (10) are fixed to the stirring rod (9).

4. The lithium battery slurry dispersion and anti-sedimentation device according to claim 3, characterized in that, The upper part of the hollow rod (2) extends to the outside of the dispersion tank (1); The top of the dispersion tank (1) is provided with a drive assembly for driving the hollow rod (2) to rotate; The driving component includes: A drive motor (11), wherein a first pulley (13) is mounted on the drive shaft (12) of the drive motor (11); The second pulley (14) is connected to the upper end of the hollow rod (2), and the first pulley (13) and the second pulley (14) are connected by a belt (15).

5. A lithium battery slurry dispersion and anti-sedimentation device according to claim 1 or 4, characterized in that, The first connecting tube (5) extends into the interior of the hollow rod (2), and the first connecting tube (5) and the hollow rod (2) are rotatably connected by a sealed bearing, or a certain gap is reserved between the outer wall of the first connecting tube (5) and the inner wall of the hollow rod (2).

6. The lithium battery slurry dispersion and anti-sedimentation device according to claim 5, characterized in that, When a certain gap is reserved between the first connecting tube (5) and the hollow rod (2), the lower end of the first connecting tube (5) extends to a position close to the liquid inlet (3).

7. The lithium battery slurry dispersion and anti-sedimentation device according to claim 1, characterized in that, The dispersion tank (1) has a liquid addition pipe (16) at the top and a liquid discharge pipe (17) at the bottom. A first valve is installed on the liquid addition pipe (16), and a second valve is installed on the liquid discharge pipe (17).

8. The lithium battery slurry dispersion and anti-sedimentation device according to claim 2, characterized in that, The fixing plate (20) is connected to the ground by anchor bolts.

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