Stirring machine

Abstract

The utility model discloses a stirring machine, which belongs to the technical field of stirring machines and is characterized in that a driving motor, a first bearing, a rotating column, a fixed shell and a stirring rod are matched with one another, so that a stirring plate can revolve to stir materials in a stirring tank; a first bevel gear, a second bevel gear and a second bearing are matched with one another, so that a stirring plate can rotate, revolution and rotation can be realized, a rotating stirring rod has an overturning effect, materials located on the lower side in the stirring tank can be fully overturned to the upper side, and the stirring efficiency is improved. The problems that the slurry at the bottom of the container is easily locally static or is not fully stirred, so that the components of the slurry are not uniformly mixed, the performance of the lithium ion battery is influenced, the capacity of the battery is not uniform, and the charging and discharging efficiency is not stable can be effectively solved.

Description

Technical Field

[0001] This application belongs to the field of mixer technology, and particularly relates to a mixer. Background Technology

[0002] In the manufacturing process of lithium-ion batteries, the mixer is an indispensable key piece of equipment in the slurry preparation and transfer stages. Its main function is to use stirring to fully mix various components in the battery slurry, such as positive electrode materials, negative electrode materials, binders and solvents, to ensure the consistency and stability of the subsequent battery performance.

[0003] However, existing mixers have certain limitations in practical applications. When the amount of slurry to be mixed is relatively small, due to the layout and working method of the mixing paddles of conventional mixers, it is often difficult to effectively disperse the slurry at the bottom of the container. The slurry at the bottom is prone to local stagnation or insufficient mixing, which may lead to uneven mixing of slurry components and thus affect the performance of lithium-ion batteries, such as uneven battery capacity and unstable charge and discharge efficiency.

[0004] Therefore, we propose a mixer to solve the above problems. Utility Model Content

[0005] The purpose of this application is to solve the problem in the prior art that uneven mixing of slurry components affects the performance of lithium-ion batteries, such as causing uneven battery capacity and unstable charge and discharge efficiency, and to propose a mixer.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A mixer includes a base. A support frame and four fixing rods are fixedly connected to the upper surface of the base. A limiting plate is fixedly connected to the top ends of two sets of fixing rods. A mixing tank is fixedly connected to the inner wall of the limiting plate. Two fixing plates are fixedly connected to the right side of the limiting plate and the right side of the base. Four fixing bolts are threaded onto the inner wall of each fixing plate. A drive motor is fixedly connected to the front of the support frame. A first bearing is fixedly connected to the inner wall of the mixing tank. A rotating column is fixedly connected to the inner ring of the first bearing. Two fixing shells are fixedly connected to the outer surface of the rotating column. The output end of the drive motor passes through the rotating column and extends into the interior of the rotating column. The outer surface of the output end of the drive motor is fixedly connected to the inner wall of the rotating column. A first bevel gear is fixedly connected to the outer surface of the output end of the drive motor. A second bearing is fixedly connected to the inner wall of each fixing shell. Two second bevel gears mesh with the outer surface of the first bevel gear. A stirring rod is fixedly connected to the inner wall of each second bevel gear. A stirring plate is fixedly connected to the outer surface of each stirring rod.

[0008] Preferably, a protective box is fixedly connected to the outer surface of the drive motor, and the bottom surface of the protective box is fixedly connected to the upper surface of the base.

[0009] Preferably, each set of fixed rods has two reinforcing plates fixedly connected to its outer surface, and the bottom surface of each reinforcing plate is fixedly connected to the upper surface of the base.

[0010] Preferably, the inner wall of each set of reinforcing plates is threaded with several identical reinforcing bolts, and the outer surface of each set of reinforcing bolts is threaded to the inner wall of the base.

[0011] Preferably, the bottom surface of the limiting plate is fixedly connected with four limiting rings, and the inner wall of each set of limiting rings is fixedly connected to the outer surface of the fixing rod.

[0012] Preferably, a reinforcing ring is fixedly connected to the outer surface of each of the stirring rods, and the ends of the two reinforcing rings that are close to each other are fixedly connected to the ends of the two second bearings that are far from each other.

[0013] In summary, the technical effects and advantages of this application are as follows:

[0014] By employing a drive motor, a first bearing, a rotating column, a fixed shell, and a stirring rod in coordination, the stirring plate can revolve around a central axis to agitate the materials inside the mixing tank. Furthermore, by employing a first bevel gear, a second bevel gear, and a second bearing in coordination, the stirring plate can rotate on its own axis, achieving both revolution and rotation. The rotating stirring rod has a flipping effect, effectively turning the materials at the bottom of the mixing tank to the top. This effectively prevents the slurry at the bottom of the container from becoming partially stagnant or insufficiently mixed, which could lead to uneven mixing of the slurry components and consequently affect the performance of the lithium-ion battery, causing uneven battery capacity and unstable charge / discharge efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the mixer of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the limiting plate of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the drive motor of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the rotating column of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the stirring rod of this utility model.

[0020] In the diagram: 1. Base; 2. Fixing rod; 3. Limiting plate; 4. Mixing tank; 5. Fixing plate; 6. Fixing bolt; 7. Reinforcing plate; 8. Reinforcing bolt; 9. Protective box; 10. Support frame; 11. Drive motor; 12. Limiting ring; 13. First bearing; 14. Rotating column; 15. Fixing shell; 16. Mixing rod; 17. Mixing plate; 18. First bevel gear; 19. Second bevel gear; 20. Second bearing; 21. Reinforcing ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-5A mixer includes a base 1. A support frame 10 and four fixing rods 2 are fixedly connected to the upper surface of the base 1. A limiting plate 3 is fixedly connected to the top of two sets of fixing rods 2. A mixing tank 4 is fixedly connected to the inner wall of the limiting plate 3. Two fixing plates 5 are fixedly connected to the right side of the limiting plate 3 and the right side of the base 1. Two reinforcing plates 7 are fixedly connected to the outer surface of each set of fixing rods 2. The bottom surface of each reinforcing plate 7 is fixedly connected to the upper surface of the base 1. The reinforcing plates 7 can reinforce the fixing rods 2 and the base 1, thereby enhancing the stability of the device.

[0023] Each fixed plate 5 has four fixed bolts 6 threadedly connected to its inner wall. The front of the support frame 10 is fixedly connected to the drive motor 11. The inner wall of the mixing tank 4 is fixedly connected to the first bearing 13. The inner ring of the first bearing 13 is fixedly connected to the rotating column 14. The outer surface of the drive motor 11 is fixedly connected to the protective box 9. The bottom surface of the protective box 9 is fixedly connected to the upper surface of the base 1. The protective box 9 can protect the drive motor 11 and play a strong protective role, preventing it from being interfered with by external factors.

[0024] Two fixed shells 15 are fixedly connected to the outer surface of the rotating column 14. The output end of the drive motor 11 passes through the rotating column 14 and extends into the interior of the rotating column 14. The outer surface of the output end of the drive motor 11 is fixedly connected to the inner wall of the rotating column 14. Several identical reinforcing bolts 8 are threadedly connected to the inner wall of each set of reinforcing plates 7. The outer surface of each set of reinforcing bolts 8 is threadedly connected to the inner wall of the base 1. Through the reinforcing bolts 8, the reinforcing plates 7 and the base 1 can be reinforced to avoid the problem of displacement and instability during use.

[0025] A first bevel gear 18 is fixedly connected to the outer surface of the output end of the drive motor 11. A second bearing 20 is fixedly connected to the inner wall of each fixed shell 15. Two second bevel gears 19 mesh with the outer surface of the first bevel gear 18. A stirring rod 16 is fixedly connected to the inner wall of each second bevel gear 19. Four limiting rings 12 are fixedly connected to the bottom surface of the limiting plate 3. The inner wall of each set of limiting rings 12 is fixedly connected to the outer surface of the fixed rod 2. The limiting rings 12 can restrict the position of the fixed rod 2, play a fixed and limiting role, and prevent its position from shifting.

[0026] To ensure the positional accuracy and long-term operational reliability of the transmission structure during stirring, the first bevel gear 18 and the two meshing second bevel gears 19 can be positioned relative to each other using a T-shaped bearing structure (not shown in the figure). Specifically, the T-shaped bearing can be a composite support structure composed of axial and radial bearings: the vertical axial bearing (such as a thrust ball bearing) fixes the drive shaft of the first bevel gear 18, bears the axial thrust during meshing, and prevents axial movement of the gear; the horizontal radial bearing (such as a deep groove ball bearing) supports the drive shaft of the second bevel gears 19, bears the radial load, and limits the radial runout of the shaft. The two form a vertical + horizontal orthogonal T-shaped spatial positioning layout. This structure can precisely control the gear meshing clearance, balance the circumferential force, radial force and axial force generated during transmission, control the radial runout of the shaft within 0.05mm and the axial runout within 0.1mm, effectively suppress vibration (noise reduction of 25dB) and improve transmission efficiency. At the same time, it forms a stable triangular mechanical structure through symmetrical support to resist the reaction torque of the stirring rod 16, ensuring the positional accuracy of the transmission structure and long-term operational reliability under high load conditions.

[0027] Based on the foregoing, the arrangement and operation of conventional mixer impellers often make it difficult to effectively disperse the slurry at the bottom of the container, leading to localized stagnation or insufficient mixing. In this embodiment, the bottom of the container is the bottom of the mixing tank 4; therefore, effective dispersion of the slurry at the bottom of the mixing tank 4 is necessary. Correspondingly, the outer surface of each stirring rod 16 is fixedly connected to the inner wall of the second bearing 20, a stirring plate 17 is fixedly connected to the outer surface of each stirring rod 16, and a reinforcing ring 21 is fixedly connected to the outer surface of each stirring rod 16. The ends of the two reinforcing rings 21 that are close to each other are fixedly connected to the ends of the two second bearings 20 that are far apart.

[0028] This configuration, with the stirring plate 17 mounted on the outer surface of the stirring rod 16, allows for a wider mixing range, enabling the stirring plate to be closer to the bottom of the mixing tank 4 during mixing, thus ensuring thorough mixing of the slurry at the bottom of the mixing tank 4. It is understood that the closer the stirring plate 17 is to the bottom of the container, the better the mixing effect. Preferably, when the stirring plate 17 faces the bottom of the mixing tank 4, the distance between it and the stirring plate 17 should not exceed 5 cm to achieve optimal mixing results.

[0029] In addition, the reinforcing ring 21 can reinforce the stirring rod 16 and the second bearing 20, preventing them from wobbling or shaking during operation.

[0030] It is worth noting that when stirring materials with high viscosity or large particles, a large shear force and a three-dimensional circulating flow field are required to ensure the stirring effect. Therefore, in other embodiments, the stirring plate 17 includes several blades disposed on the stirring rod 16, and these blades are arranged in a spiral along the axial direction of the stirring rod 16. Preferably, the blades can be either left-curved or right-curved, with the blades on adjacent stirring rods 16 having opposite directions, and the number of left and right blades in the same cross-section being equal. This allows the cutting forces of adjacent blades to cancel each other out, reducing axial vibration and offset of the stirring rod 16 and ensuring the stability of the stirring. With this configuration, when the stirring plate 16 uses spirally arranged left and right-curved blades, an axial component force is generated during rotation (similar to the principle of a screw pump), propelling the material to move spirally upwards or downwards along the axial direction of the stirring rod 16, forming a three-dimensional circulating flow field. This flow pattern can effectively lift high-viscosity materials or precipitated particles from the bottom of the mixing tank 4 to the middle and upper layers, avoiding local stagnation.

[0031] The working principle of this invention is as follows: First, materials are added to the mixing tank 4. Then, the output of the drive motor 11 rotates, causing the rotating column 14 to rotate, which in turn causes the stirring rod 16 and the stirring plate 17 to revolve. This allows for the mixing and processing of the materials inside the mixing tank 4. Simultaneously, the rotation of the drive motor 11 drives the first bevel gear 18 to rotate, which in turn drives the two second bevel gears 19 to rotate, thus causing the stirring rod 16 to rotate. This achieves both revolving and self-rotating motion. The rotating stirring rod 16 has a flipping effect, effectively turning the materials located at the bottom of the mixing tank to the top, enhancing the device's effectiveness. For example, when mixing a small amount of slurry, the stirring device at the bottom of the reaction tank 4 can directly act on the bottom area of ​​the container. Its rotatable characteristic allows the bottom slurry to be effectively stirred, overcoming the problem of static slurry and poor dispersion at the bottom when mixing small amounts of slurry in conventional mixers, thus avoiding problems such as uneven battery capacity and unstable charging and discharging efficiency.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. Blender comprising a base (1), characterized in that: A support frame (10) and four fixing rods (2) are fixedly connected to the upper surface of the base (1). A limiting plate (3) is fixedly connected to the top of the two sets of fixing rods (2). A mixing tank (4) is fixedly connected to the inner wall of the limiting plate (3). Two fixing plates (5) are fixedly connected to the right side of the limiting plate (3) and the right side of the base (1). Four fixing bolts (6) are threadedly connected to the inner wall of each fixing plate (5). A drive motor (11) is fixedly connected to the front of the support frame (10). A first bearing (13) is fixedly connected to the inner wall of the mixing tank (4). A rotating column (14) is fixedly connected to the inner ring of the first bearing (13). Two fixing shells (15) are fixedly connected to the outer surface of the rotating column (14). The output end of the drive motor (11) passes through the rotating column (14) and extends into the interior of the rotating column (14). The outer surface of the output end of the drive motor (11) is fixedly connected to the inner wall of the rotating column (14). A first bevel gear (18) is fixedly connected to the outer surface of the output end of the drive motor (11). A second bearing (20) is fixedly connected to the inner wall of each fixed shell (15). Two second bevel gears (19) mesh with the outer surface of the first bevel gear (18). A stirring rod (16) is fixedly connected to the inner wall of each second bevel gear (19). The outer surface of each stirring rod (16) is fixedly connected to the inner wall of the second bearing (20). A stirring plate (17) is fixedly connected to the outer surface of each stirring rod (16).

2. A blender as claimed in claim 1, wherein: A protective box (9) is fixedly connected to the outer surface of the drive motor (11), and the bottom surface of the protective box (9) is fixedly connected to the upper surface of the base (1).

3. A blender as claimed in claim 1, wherein: Two reinforcing plates (7) are fixedly connected to the outer surface of each set of fixed rods (2), and the bottom surface of each reinforcing plate (7) is fixedly connected to the upper surface of the base (1).

4. A blender as claimed in claim 3, wherein: Each set of reinforcing plates (7) has several identical reinforcing bolts (8) threadedly connected to its inner wall, and the outer surface of each set of reinforcing bolts (8) is threadedly connected to the inner wall of the base (1).

5. A blender as claimed in claim 1, wherein: The bottom surface of the limiting plate (3) is fixedly connected with four limiting rings (12), and the inner wall of each group of limiting rings (12) is fixedly connected to the outer surface of the fixing rod (2).

6. A blender as claimed in claim 1, wherein: Each of the stirring rods (16) has a reinforcing ring (21) fixedly connected to its outer surface. The ends of the two reinforcing rings (21) that are close to each other are fixedly connected to the ends of the two second bearings (20) that are far from each other.

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