Material mixing device for producing silicon-carbon negative electrode material

Abstract

The utility model relates to a mixing device for producing a silicon-carbon negative electrode material, which belongs to the technical field of silicon-carbon negative electrode material production and comprises a mixing box, the top of the mixing box is fixedly connected with a guide hopper, the top of the guide hopper is fixedly connected with a cover plate, and a mixing component is arranged in the mixing box. According to the mixing device for production of the silicon-carbon negative electrode material, after the negative electrode material enters the mixing box from the feeding pipe, a first motor can be started to drive a first stirring shaft to perform rotary stirring, then a second motor is started to drive a second stirring shaft to perform transverse stirring, the mixing uniformity is ensured, and meanwhile, an auxiliary rotating shaft is driven by a transmission belt to rotate uniformly; when the first stirring shaft rotates in the annular groove, a bevel gear and a gear ring are driven to be in meshing transmission, then an annular plate can rotate at the top of a mounting plate, and after the first stirring shaft revolves for more than half a circle in the annular groove, a second motor rotates reversely, so that the first stirring shaft returns again, and therefore, revolution stirring can be performed while autorotation stirring is performed, and the mixing uniformity is further improved.

Description

Technical Field

[0001] This utility model relates to the field of silicon-carbon anode material production technology, specifically a mixing device for silicon-carbon anode material production. Background Technology

[0002] Anode materials are an important component of lithium-ion batteries, directly affecting key indicators such as energy density, cycle life, and safety performance. Due to their abundant reserves and ultra-high theoretical specific capacity, silicon-carbon anode materials are gradually becoming the top choice for battery companies and lithium battery material manufacturers to improve anodes, and are one of the most promising next-generation lithium-ion battery anode materials.

[0003] According to Chinese Patent CN218012444U, a mixing device for the production of silicon-carbon anode materials involves an electric telescopic rod extending to move the connecting frame downwards, inserting a nozzle into the inner cavity of the through-hole. A conveying pipe at a designated position transports the material through a fixed pipe to a telescopic flexible hose, which then conveys it to the inner cavity of the working chamber via the nozzle. A lead screw rotates forward, causing the lead screw sleeve to move towards the other side of the working chamber. During this movement, the material is evenly conveyed through the nozzle. After conveying is complete, the electric telescopic rod retracts, causing the connecting frame to move the nozzle upwards, disengaging it from the through-hole. Then, a hydraulic telescopic rod extends, causing a baffle to move towards the through-hole, sealing it and preventing impurities from entering the inner cavity of the working chamber during subsequent mixing. The mixing shaft mixes the material in the inner cavity of the working chamber, and then a solenoid valve opens, conveying the material through a guide pipe to the inner cavity of the fixed chamber. Through the transmission of two second sprockets and a chain, the mixing shaft rotates synchronously, thus stirring the mixed material and preventing sedimentation caused by prolonged storage.

[0004] Currently, mixing devices are required in the production of silicon-carbon anode materials. However, traditional mixing devices have low practicality, mostly relying on stirring or shaking the mixing tank, which leads to uneven mixing of materials and reduces the practicality of mixing devices for silicon-carbon anode material production. Therefore, a mixing device for silicon-carbon anode material production is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a mixing device for the production of silicon-carbon anode materials. It has the advantages of using two mixing methods to improve the practicality of the device and make the mixing more uniform. It solves the problem that traditional mixing devices have low practicality, and most of them only rely on stirring or shaking the mixing box, which leads to uneven material mixing and reduces the practicality of mixing devices for the production of silicon-carbon anode materials.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a mixing device for the production of silicon-carbon anode materials, comprising a mixing box, a guide hopper fixedly connected to the top of the mixing box, a cover plate fixedly connected to the top of the guide hopper, and a mixing assembly disposed inside the mixing box;

[0007] The mixing assembly includes a mounting plate, which is fixedly connected to the outer surface of the mixing tank. An annular plate is slidably connected to the top of the mounting plate. A support plate is fixedly connected inside the annular plate. A first motor is fixedly connected to the outer surface of the support plate. A first stirring shaft is fixedly connected to one end of the output shaft of the first motor. A second motor is fixedly connected to the right side of the mixing tank. A second stirring shaft is fixedly connected to the output end of the second motor.

[0008] Furthermore, a discharge pipe is fixedly connected to the bottom of the mixing box, and a feed pipe is fixedly connected to the top of the cover plate. An annular groove is provided inside the cover plate, and the first stirring shaft is slidably connected to the cover plate through the annular groove.

[0009] Furthermore, the mounting plate has a sliding groove inside, the annular plate is slidably connected to the mounting plate through the sliding groove, a positioning post is fixedly connected inside the annular plate, a bolt is threaded inside the positioning post, and the support plate is fixedly connected to the positioning post through bolts.

[0010] Furthermore, a connecting plate is fixedly connected to the bottom of the mounting plate, a bevel gear is rotatably connected inside the connecting plate, and a toothed ring is fixedly connected to the outer surface of the annular plate, with the bevel gear meshing with the toothed ring for transmission.

[0011] Furthermore, a second pulley is fixedly connected to the outer surface of the bevel gear, an auxiliary rotating shaft is fixedly connected to the left side of the second stirring shaft, a first pulley is fixedly connected to the outer surface of the auxiliary rotating shaft, and the first pulley and the second pulley are connected by a transmission belt.

[0012] Furthermore, several stirring blades are fixedly connected to the outer surface of the second stirring shaft.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The mixing device for silicon-carbon anode material production allows for the following process: after the anode material enters the mixing tank through the feed pipe, the first motor is activated to drive the first stirring shaft to rotate and stir. Subsequently, the second motor is activated to drive the second stirring shaft to stir laterally, ensuring the uniformity of the mixture. Simultaneously, the auxiliary rotating shaft, driven by the transmission belt, drives the bevel gear and the gear ring to mesh and drive the transmission. As a result, the annular plate rotates on the top of the mounting plate. After the first stirring shaft has revolved more than half a circle inside the annular groove, the second motor rotates in the opposite direction, causing the first stirring shaft to return. This achieves simultaneous self-rotation and revolution stirring, further improving the uniformity of the mixture.

[0015] 2. The mixing device for the production of silicon-carbon anode materials makes the first stirring shaft more stable during mixing by sliding the annular plate on the top of the mounting plate. After damage, it can be disassembled and replaced through the threaded connection of the positioning column and the bolt, ensuring that the subsequent service life is not affected. Attached Figure Description

[0016] Figure 1 This is a main sectional view of the structure of this utility model;

[0017] Figure 2 This is a partial top view of the structure of this utility model;

[0018] Figure 3 This is a three-dimensional view of the structure of this utility model.

[0019] In the diagram: 1. Mixing box; 2. Guide hopper; 3. Cover plate; 4. Annular groove; 5. Mounting plate; 6. Annular plate; 7. Positioning column; 8. Bolt; 9. Support plate; 10. First motor; 11. First stirring shaft; 12. Second motor; 13. Second stirring shaft; 14. Auxiliary rotating shaft; 15. Connecting plate; 16. Bevel gear; 17. Gear ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 The mixing device for producing silicon-carbon anode material in this embodiment includes a mixing box 1, a discharge pipe fixedly connected to the bottom of the mixing box 1, a guide hopper 2 fixedly connected to the top of the mixing box 1, a cover plate 3 fixedly connected to the top of the guide hopper 2, a feed pipe fixedly connected to the top of the cover plate 3, and an annular groove 4 opened inside the cover plate 3.

[0022] The mixing tank 1 is equipped with a mixing chamber; the mixing assembly includes a mounting plate 5, which is fixedly connected to the outer surface of the mixing tank 1. An annular plate 6 is slidably connected to the top of the mounting plate 5. A sliding groove is provided inside the mounting plate 5, and the annular plate 6 is slidably connected to the mounting plate 5 through the sliding groove.

[0023] The annular plate 6 is internally fixedly connected to a support plate 9, and the annular plate 6 is internally fixedly connected to a positioning post 7. The positioning post 7 is internally threaded with a bolt 8, and the support plate 9 is fixedly connected to the positioning post 7 by the bolt 8.

[0024] A first motor 10 is fixedly connected to the outer surface of the support plate 9. A first stirring shaft 11 is fixedly connected to one end of the output shaft of the first motor 10. The first stirring shaft 11 is slidably connected to the cover plate 3 through the annular groove 4.

[0025] A connecting plate 15 is fixedly connected to the bottom of the mounting plate 5. A bevel gear 16 is rotatably connected inside the connecting plate 15. A toothed ring 17 is fixedly connected to the outer surface of the annular plate 6. The bevel gear 16 and the toothed ring 17 mesh and drive each other.

[0026] A second motor 12 is fixedly connected to the right side of the mixing box 1. A second stirring shaft 13 is fixedly connected to the output end of the second motor 12. Several stirring blades are fixedly connected to the outer surface of the second stirring shaft 13. An auxiliary rotating shaft 14 is fixedly connected to the left side of the second stirring shaft 13. A first pulley is fixedly connected to the outer surface of the auxiliary rotating shaft 14. The first pulley and the second pulley are connected by a transmission belt.

[0027] In this embodiment, by sliding the annular plate 6 on the top of the mounting plate 5, the first stirring shaft 11 becomes more stable when mixing materials, and can be disassembled and replaced via the threaded connection between the positioning pin 7 and the bolt 8 after damage, ensuring that its subsequent service life is not affected.

[0028] In this embodiment, it should be noted that the second motor 12 is controlled by an external control device. After the annular plate 6 rotates more than half a turn, it can rotate in the opposite direction and return to the starting point, thereby achieving uniformity of the negative electrode material mixing.

[0029] The working principle of the above embodiments is as follows:

[0030] In this mixing device for silicon-carbon anode material production, after the anode material enters the mixing tank 1 through the feed pipe, the first motor 10 can be started to drive the first stirring shaft 11 to rotate and stir. Then, the second motor 12 is started to drive the second stirring shaft 13 to stir laterally, ensuring the uniformity of mixing. At the same time, the auxiliary rotating shaft 14, driven by the transmission belt, will drive the bevel gear 16 to mesh with the gear ring 17, and then the annular plate 6 will rotate on the top of the mounting plate 5. After the first stirring shaft 11 has revolved more than half a circle inside the annular groove 4, the second motor 12 will rotate in the opposite direction, causing the first stirring shaft 11 to return. This achieves both self-rotation and revolution stirring, further improving the uniformity of mixing.

[0031] It should be noted that all standard parts used in this application can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixing device for producing silicon-carbon anode materials, comprising a mixing tank (1), characterized in that: The top of the mixing box (1) is fixedly connected to a guide hopper (2), the top of the guide hopper (2) is fixedly connected to a cover plate (3), and the mixing box (1) is equipped with a mixing component inside; The mixing assembly includes a mounting plate (5), which is fixedly connected to the outer surface of the mixing box (1). An annular plate (6) is slidably connected to the top of the mounting plate (5). A support plate (9) is fixedly connected inside the annular plate (6). A first motor (10) is fixedly connected to the outer surface of the support plate (9). A first stirring shaft (11) is fixedly connected to one end of the output shaft of the first motor (10). A second motor (12) is fixedly connected to the right side of the mixing box (1). A second stirring shaft (13) is fixedly connected to the output end of the second motor (12).

2. The mixing device for producing silicon-carbon anode materials according to claim 1, characterized in that: The bottom of the mixing box (1) is fixedly connected to a discharge pipe, and the top of the cover plate (3) is fixedly connected to a feed pipe. An annular groove (4) is provided inside the cover plate (3), and the first stirring shaft (11) is slidably connected to the cover plate (3) through the annular groove (4).

3. The mixing device for producing silicon-carbon anode materials according to claim 1, characterized in that: The mounting plate (5) has a sliding groove inside. The annular plate (6) is slidably connected to the mounting plate (5) through the sliding groove. The annular plate (6) is fixedly connected to a positioning post (7) inside. The positioning post (7) is threadedly connected to a bolt (8). The support plate (9) is fixedly connected to the positioning post (7) through the bolt (8).

4. The mixing device for producing silicon-carbon anode materials according to claim 1, characterized in that: A connecting plate (15) is fixedly connected to the bottom of the mounting plate (5). A bevel gear (16) is rotatably connected inside the connecting plate (15). A toothed ring (17) is fixedly connected to the outer surface of the annular plate (6). The bevel gear (16) and the toothed ring (17) mesh and drive each other.

5. A mixing device for producing silicon-carbon anode materials according to claim 4, characterized in that: The outer surface of the bevel gear (16) is fixedly connected to a second pulley, and the left side of the second stirring shaft (13) is fixedly connected to an auxiliary rotating shaft (14). The outer surface of the auxiliary rotating shaft (14) is fixedly connected to a first pulley, and the first pulley and the second pulley are connected by a transmission belt.

6. The mixing device for producing silicon-carbon anode materials according to claim 1, characterized in that: Several stirring blades are fixedly connected to the outer surface of the second stirring shaft (13).

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