A stirring device for dry electrode powder fiberization

Abstract

This utility model belongs to the technical field of electrode production equipment, specifically providing a stirring device for dry electrode powder fiberization, including a tank, a base, a coarse stirring component, and a shearing stirring component. The top of the tank is equipped with a sealing cover. The shearing stirring component is rotatably mounted on the inner bottom of the tank and driven by a magnetic coupler. The magnetic coupler includes an outer rotor, an isolation cover, and an inner rotor. The outer rotor is rotatably mounted on a mounting base. The isolation cover is fixedly inserted through the bottom of the tank and extends into the outer rotor. The inner rotor is rotatably fitted inside the isolation cover and connected to the shearing stirring component. Permanent magnet arrays are evenly distributed on the inner circumferential surface of both the outer and inner rotors. This utility model can achieve non-contact transmission using the permanent magnet arrays of the outer and inner rotors, eliminating the need for a through-type drive shaft, solving the shaft seal leakage problem, avoiding material waste and contamination, and featuring a simple structure for easy disassembly and maintenance. Furthermore, the absence of mechanical contact wear extends the service life of the stirring device.

Description

Technical Field

[0001] This utility model relates to the field of electrode production equipment technology, and specifically to a stirring device for dry electrode powder fiberization. Background Technology

[0002] Existing commercial dry electrode methods mainly use hydrophobic polytetrafluoroethylene (PTFE) materials as binders. These binders are almost insoluble in common solvent systems and require fibrosis to form a continuous network structure with active materials and conductive agents, and to form a film. This places extremely high demands on the uniformity and efficiency of the powder fibrosis used in the dry process.

[0003] Existing mixing equipment mostly uses traditional mechanical agitation, relying on a through-type drive shaft to connect the mixing components. This structure has the problem of easy shaft seal leakage, which can easily lead to the leakage of dry powder materials, resulting in waste, environmental pollution, and damage to the sealing environment of the tank. In addition, the shaft seal device is complex, making it difficult to disassemble and maintain related components, increasing costs and time, and mechanical contact wear also shortens the equipment life. Utility Model Content

[0004] To address the technical problems in the prior art, this utility model provides a stirring device for dry electrode powder fiberization, including a tank, a base, and a coarse stirring assembly and a shearing stirring assembly installed in the tank. The top of the tank is provided with a sealing cover, and the sealing cover has an air outlet. The outer bottom of the tank is fixedly connected to the base through a mounting seat. The lower side wall of the tank is provided with a discharge port. The shearing stirring assembly is rotatably installed in the inner bottom of the tank and is driven by a magnetic coupler. The coarse stirring assembly is located above the shearing stirring assembly and is rotatably connected to the sealing cover through a speed-regulating motor. The magnetic coupler includes an outer rotor, an isolation cover, and an inner rotor arranged coaxially. The outer rotor is rotatably installed on the mounting seat through a high-speed motor. The isolation cover is fixedly inserted through the bottom of the tank and extends into the outer rotor. One end of the inner rotor is rotatably fitted inside the isolation cover, and the other end extends into the tank and connects to the shearing stirring assembly. The inner circumferential surface of the outer rotor and the outer circumferential surface of the inner rotor are both provided with permanent magnet arrays.

[0005] Furthermore, the coarse stirring assembly includes a stirring shaft, a stirring paddle, and multiple magnetic rods. The upper end of the stirring shaft is fixedly connected to the output shaft of a speed-regulating motor, and the lower end is fixedly connected to multiple magnetic rods through a collar. The multiple magnetic rods are evenly distributed. The stirring paddle is fixedly installed on the stirring shaft and located at the end near the collar.

[0006] Furthermore, the isolation cover is a cylindrical structure, with its top fixedly connected to the inner bottom of the tank via a mounting flange, and the inner rotor is rotatably sealed to the mounting flange via a sealing gasket.

[0007] Furthermore, a bearing is provided between the inner rotor and the isolation cover, and the bearing is located at the end of the isolation cover near the mounting flange.

[0008] Furthermore, the shearing and stirring assembly includes a shearing disc and shearing blades. Both the shearing disc and shearing blades are fixedly connected to the inner rotor, and the shearing disc is located above the shearing blades. The shearing disc has a circular disc-shaped structure, and its upper and lower circumferential edges are respectively provided with outwardly inclined crushing teeth.

[0009] Furthermore, the shearing disc is provided with a plurality of radially distributed through slots, which are evenly distributed.

[0010] Furthermore, the shearing blades are multiple fan-shaped blades evenly distributed along the circumference, and the blades are inclined at a 30° angle to the horizontal plane.

[0011] Furthermore, the outer edge of the shearing blade is provided with continuous triangular serrations, and the blade surface of the shearing blade is provided with multiple diamond-shaped slots that penetrate both sides of it.

[0012] Furthermore, a hydraulic rod is fixedly installed on the base, and the telescopic end of the hydraulic rod is connected to the sealing cover via a connecting rod.

[0013] Beneficial effects: 1. In this utility model, by using a magnetic coupler comprising a coaxially arranged outer rotor, an isolation cover, and an inner rotor, non-contact transmission can be achieved using the permanent magnet array of the outer and inner rotors. This eliminates the need for a through-type drive shaft, solving the problem of shaft seal leakage, avoiding material waste and contamination, ensuring a sealed tank environment, and eliminating the need for complex shaft seal devices. This simplifies the structure and makes disassembly and maintenance of components such as the isolation cover and inner rotor more convenient, saving costs and time. Furthermore, the absence of mechanical contact wear extends the equipment's service life. The specific working process involves first opening the sealing cover to allow dry materials to enter the tank, and then closing the sealing cover to form a... A closed mixing space is formed, and then the speed-regulating motor is started to control the coarse mixing component to rotate at low speed, so as to tumble and initially mix the dry material over a large area, causing the dry material to circulate and tumble in the tank. The air outlet is used to balance the air pressure in the tank during this process. After the dry powder material is mixed evenly at low speed, the high-speed motor is started to drive the outer rotor to rotate at high speed. The permanent magnet array of the outer rotor and the inner rotor rotate synchronously through the magnetic field. The inner rotor drives the shearing and mixing component to operate, shearing and crushing the dry material to achieve its fiberization. After the processing is completed, the fiberized powder is discharged through the discharge port at the bottom of the tank.

[0014] 2. In this utility model, by setting up a stirring shaft, a stirring paddle and multiple magnetic rods, the stirring paddle can be used to stir the dry materials to achieve preliminary mixing. In addition, the magnetic rods can be used for auxiliary stirring to break up the agglomeration structure of the dry materials, improve the uniformity of material mixing, and remove any magnetic foreign matter that may be mixed in the materials, ensuring the purity of the electrode materials and reducing the risk of internal short circuits in the battery from the source.

[0015] 3. In this utility model, the installation flange facilitates the detachable fixing of the isolation cover and the tank. Combined with the sealing gasket, it effectively blocks the material inside the tank, preventing it from falling into the isolation cover and avoiding the accumulation of material inside the isolation cover that would affect the normal rotation of the inner rotor. It also ensures the normal working environment of the magnetic coupler. The bearing reduces the frictional resistance of the inner rotor during rotation, allowing the inner rotor to rotate more smoothly and stably inside the isolation cover, ensuring the high efficiency and stability of the power transmission of the magnetic coupler.

[0016] 4. In this invention, the shearing disc, shearing blades, and crushing teeth enable impact crushing of dry materials, thereby improving the uniformity and efficiency of fiberization. Specifically, when the shearing disc rotates at high speed, these outwardly inclined crushing teeth first utilize centrifugal force to throw the dry materials near the shearing disc to all sides, expanding the effective range of the dry materials. At the same time, due to the inclined arrangement of the crushing teeth, a combined force with both impact and tearing force is generated when they come into contact with the dry materials. This combined force can more effectively crush the dry material particles. Compared with ordinary vertical crushing teeth, the outwardly inclined design increases the contact area and contact time between the dry materials and the crushing teeth, improving crushing efficiency. Combined with the arrangement of the through slots, on the one hand, the weight of the shearing disc is reduced, the load on the high-speed motor is reduced, and energy utilization efficiency is improved. On the other hand, during the process of the dry materials being thrown to all sides, some of the dry materials will pass through these through slots, further increasing the flow path and uniformity of the dry materials, which helps to fully crush and mix the dry materials.

[0017] 5. In this invention, the arrangement of multiple fan-shaped blades at a 30° angle guides the dry material to flow in a specific direction, forming a material flow similar to a spiral ascent or descent. This increases the residence time of the dry material in the shearing zone and improves the shearing effect. Combined with the triangular saw teeth, it can finely cut the dry material like a sharp knife, gradually shearing it into fine fibers. Combined with the diamond-shaped grooves, it can shear and knead the dry material passing through the diamond-shaped grooves, further promoting the fiberization of the dry material. At the same time, the shape and distribution of the diamond-shaped grooves also cause complex flow and deformation of the dry material when it passes through, increasing the internal interaction of the dry material, thereby improving the overall fiberization degree and uniformity of the dry material.

[0018] 6. In this utility model, the hydraulic rod and connecting rod make it easy to control the opening and closing of the sealing cover, which facilitates the addition of dry materials and the cleaning and maintenance of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall front structure of this utility model; Figure 2 This is a cross-sectional view of the tank body of this utility model; Figure 3 This is a cross-sectional view of the installation structure of the magnetic coupler and shear stirring assembly of this utility model; Figure 4 This is a schematic diagram of the magnetic coupler structure of this utility model.

[0021] Figure 5 for Figure 3 Detailed structural diagram at point A; Figure 6 This is a schematic diagram of the coarse stirring component of this utility model.

[0022] Explanation of reference numerals in the attached figures: 1. Tank body; 2. Sealing cover; 3. Base; 4. Hydraulic rod; 5. Discharge port; 6. Air outlet; 7. Speed-regulating motor; 8. Agitator shaft; 9. Agitator paddle; 10. Shearing and agitating assembly; 101. Magnetic coupler; 11. Outer rotor; 12. Isolation cover; 13. Inner rotor; 14. Mounting base; 15. High-speed motor; 16. Bearing; 17. Mounting flange; 18. Sealing gasket; 19. Shearing disc; 20. Shearing blade; 21. Collar; 22. Magnetic rod. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] In the description of this application, 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", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element 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 application.

[0025] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] This utility model provides a stirring device for the fiberization of dry electrode powder, such as... Figures 1 to 5 As shown, the system includes a tank 1, a base 3, and a coarse stirring assembly and a shearing stirring assembly 10 installed inside the tank 1. The top of the tank 1 is provided with a sealing cap 2, which has an air outlet 6. The outer bottom of the tank 1 is fixedly connected to the base 3 via a mounting base 14. The lower side wall of the tank 1 has a discharge port 5. The shearing stirring assembly 10 is rotatably mounted on the inner bottom of the tank 1 and is driven by a magnetic coupler 101. The coarse stirring assembly is located above the shearing stirring assembly 10 and is rotatably connected to the sealing cap 2 via a speed-regulating motor 7. The magnetic coupler 101 includes coaxially arranged components. The tank consists of an outer rotor 11, an isolation cover 12, and an inner rotor 13. The outer rotor 11 is rotatably mounted on a mounting base 14 via a high-speed motor 15. The isolation cover 12 is fixedly inserted through the bottom of the tank body 1 and extends into the outer rotor 11, ensuring that the outer rotor 11 and the isolation cover 12 can rotate relative to each other. One end of the inner rotor 13 is rotatably fitted inside the isolation cover 12, and the other end extends into the tank body 1 and is connected to the shearing and stirring assembly 10. The inner rotor 13 and the isolation cover 12 are connected by a rotational seal to prevent leakage. The inner circumferential surface of the outer rotor 11 and the outer circumferential surface of the inner rotor 13 are both equipped with permanent magnet arrays.

[0030] In this embodiment, by using a magnetic coupler 101 comprising an outer rotor 11, an isolation cover 12, and an inner rotor 13 arranged coaxially, non-contact transmission can be achieved using the permanent magnet array of the outer rotor 11 and the inner rotor 13. This eliminates the need for a through-type drive shaft, solving the shaft seal leakage problem, avoiding material waste and contamination, ensuring a sealed environment for the tank 1, and eliminating the need for a complex shaft seal device. This simplifies the structure and makes disassembly and maintenance of components such as the isolation cover 12 and the inner rotor 13 more convenient, saving costs and time. Furthermore, the absence of mechanical contact wear extends the equipment's service life. The specific working process is as follows: first, the dry material is introduced into the tank 1 by opening the sealing cover 2. After the sealing cover 2 closes, a closed stirring space is formed. Then, the speed-regulating motor 7 is started to control the coarse stirring component to rotate at low speed, performing large-area agitation and preliminary mixing of the dry material. This allows the dry material to circulate and tumble within the tank 1. The air outlet 6 is used to balance the air pressure inside the tank during this process. After the dry powder material is mixed evenly at low speed... Then, the high-speed motor 15 is started, driving the outer rotor 11 to rotate at high speed. The permanent magnet array of the outer rotor 11 and the inner rotor 13 rotate synchronously through the magnetic field. The inner rotor 13 drives the shearing and stirring assembly 10 to operate. Specifically, when the outer rotor 11 rotates under the drive of an external power source, such as the high-speed motor 15, the magnetic field generated by its internal permanent magnet array also rotates. Since the magnetic field has penetrability, the rotating magnetic field can pass through the isolation cover 12 and interact with the permanent magnet array on the inner rotor 13. According to the interaction law between magnetic poles, like magnetic poles repel each other and unlike magnetic poles attract each other. Under the action of this magnetic field force, the inner rotor 13 will rotate synchronously with the outer rotor 11, thereby realizing the non-contact transmission of power from the outside to the inside, providing stable rotational power for the shearing and stirring assembly 10, shearing and crushing the dry material to achieve its fiberization. After processing, the fiberized powder is discharged through the discharge port 5 at the bottom of the tank 1.

[0031] In this utility model, preferably, such as Figure 1 , Figure 2 and Figure 6 As shown, the coarse stirring assembly includes a stirring shaft 8, a stirring paddle 9, and multiple magnetic rods 22. The upper end of the stirring shaft 8 is fixedly connected to the output shaft of the speed-regulating motor 7, and the lower end is fixedly connected to the multiple magnetic rods 22 through a collar 21. Specifically, the speed-regulating motor 7 is fixedly installed on the top of the sealing cover 2, and its output shaft extends through the sealing cover 2 into the tank body 1 and is fixedly connected to the stirring shaft 8. The multiple magnetic rods 22 are evenly distributed. The stirring paddle 9 is fixedly installed on the stirring shaft 8 and is located at one end close to the collar 21. The collar 21 and the stirring shaft 8 are bolted together for easy disassembly and maintenance. After the operation is completed, the collar 21 can be removed to clean the impurities adsorbed on the surface of the magnetic rods 22, ensuring the purification effect during recycling.

[0032] In this embodiment, by setting up the stirring shaft 8, the stirring paddle 9 and multiple magnetic rods 22, the stirring paddle 9 can be used to stir the dry materials to achieve preliminary mixing. In addition, the magnetic rods 22 can be used to assist stirring, break up the agglomeration structure of the dry materials, improve the uniformity of material mixing, and remove any magnetic foreign matter that may be mixed in the materials, ensuring the purity of the electrode materials and reducing the risk of internal short circuits in the battery from the source.

[0033] In this utility model, preferably, such as Figures 1 to 5 As shown, the isolation cover 12 is a cylindrical structure, and its top is fixedly connected to the inner bottom of the tank body 1 through the mounting flange 17. The inner rotor 13 is rotatably sealed to the mounting flange 17 through the sealing gasket 18. A bearing 16 is provided between the inner rotor 13 and the isolation cover 12, and the bearing 16 is located at the end of the isolation cover 12 near the mounting flange 17.

[0034] In this embodiment, the installation flange 17 facilitates the detachable fixing of the isolation cover 12 and the tank 1. Combined with the sealing gasket 18, it effectively blocks the material inside the tank 1 from falling into the isolation cover 12, preventing the material from accumulating inside the isolation cover 12 and affecting the normal rotation of the inner rotor 13. It also ensures the normal working environment of the magnetic coupler 101. The bearing 16 reduces the frictional resistance of the inner rotor 13 during rotation, allowing the inner rotor 13 to rotate more smoothly and stably inside the isolation cover 12, ensuring the high efficiency and stability of the power transmission of the magnetic coupler 101.

[0035] In this utility model, preferably, such as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the shearing and stirring assembly 10 includes a shearing disk 19 and shearing blades 20. Both the shearing disk 19 and the shearing blades 20 are fixedly connected to the inner rotor 13, and the shearing disk 19 is located above the shearing blades 20. The shearing disk 19 has a circular disk-shaped structure, and its upper and lower circumferential edges are respectively provided with outwardly inclined crushing teeth. The shearing disk 19 is also provided with a plurality of radially distributed through slots, and the plurality of through slots are evenly distributed.

[0036] In this embodiment, the shearing disc 19, shearing blades 20, and crushing teeth enable impact crushing of dry materials, thereby improving the uniformity and efficiency of fiberization. Specifically, when the shearing disc 19 rotates at high speed, these outwardly inclined crushing teeth first use centrifugal force to throw the dry materials near the shearing disc 19 to all sides, expanding the effective range of the dry materials. At the same time, due to the inclined arrangement of the crushing teeth, a combined force with both impact and tearing force is generated when they come into contact with the dry materials. This combined force can more effectively crush the dry material particles. Compared with ordinary vertical crushing teeth, the outwardly inclined design increases the contact area and contact time between the dry materials and the crushing teeth, improving crushing efficiency. Combined with the arrangement of the through slots, on the one hand, the weight of the shearing disc 19 is reduced, the load on the high-speed motor 15 is reduced, and the energy utilization efficiency is improved. On the other hand, during the process of the dry materials being thrown to all sides, some of the dry materials will pass through these through slots, further increasing the flow path and uniformity of the dry materials, which helps to fully crush and mix the dry materials.

[0037] In this utility model, preferably, such as Figure 2 and Figure 3 As shown, the shearing blade 20 consists of multiple fan-shaped blades evenly distributed along the circumference, with the blades inclined at a 30° angle to the horizontal plane; the outer edge of the shearing blade 20 is provided with continuous triangular serrations, and the blade surface of the shearing blade 20 is provided with multiple rhomboid grooves penetrating both sides.

[0038] In this embodiment, the arrangement of multiple fan-shaped blades at a 30° angle guides the dry material to flow in a specific direction, forming a material flow similar to a spiral ascent or descent. This increases the residence time of the dry material in the shearing zone and improves the shearing effect. Combined with the triangular sawtooth arrangement, the dry material can be finely cut like a sharp knife, gradually shearing it into fine fibers. Combined with the diamond-shaped grooves, the dry material passing through the diamond-shaped grooves can be sheared and kneaded, further promoting the fiberization of the dry material. At the same time, the shape and distribution of the diamond-shaped grooves also cause complex flow and deformation of the dry material as it passes through, increasing the internal interaction of the dry material, thereby improving the overall fiberization degree and uniformity of the dry material.

[0039] In this utility model, preferably, such as Figure 1 As shown, a hydraulic rod 4 is fixedly installed on the base 3, and the telescopic end of the hydraulic rod 4 is connected to the sealing cover 2 through a connecting rod.

[0040] In this embodiment, the hydraulic rod 4 and the connecting rod make it easy to control the opening and closing of the sealing cover 2, which facilitates the addition of dry materials and the cleaning and maintenance of the equipment.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A stirring device for dry electrode powder fiberization, comprising a tank (1), a base (3), and a coarse stirring assembly and a shear stirring assembly (10) installed in the tank (1), wherein the top of the tank (1) is provided with a sealing cover (2), the sealing cover (2) is provided with an air outlet (6), the outer bottom of the tank (1) is fixedly connected to the base (3) through a mounting seat (14), the lower side wall of the tank (1) is provided with a discharge port (5), the shear stirring assembly (10) is rotatably installed in the inner bottom of the tank (1) and driven by a magnetic coupler (101), the coarse stirring assembly is located above the shear stirring assembly (10) and is rotatably connected to the sealing cover (2) through a speed regulating motor (7), characterized in that, The magnetic coupler (101) includes an outer rotor (11), an isolation cover (12), and an inner rotor (13) arranged coaxially. The outer rotor (11) is rotatably mounted on the mounting base (14) by a high-speed motor (15). The isolation cover (12) is fixedly penetrated through the bottom of the tank (1) and extends into the outer rotor (11). One end of the inner rotor (13) is rotatably fitted inside the isolation cover (12), and the other end extends into the tank (1) and is connected to the shearing and stirring assembly (10). The inner circumferential surface of the outer rotor (11) and the outer circumferential surface of the inner rotor (13) are both provided with permanent magnet arrays.

2. The stirring device for dry electrode powder fiberization according to claim 1, characterized in that, The coarse stirring assembly includes a stirring shaft (8), a stirring paddle (9), and multiple magnetic rods (22). The upper end of the stirring shaft (8) is fixedly connected to the output shaft of a speed-regulating motor (7), and the lower end is fixedly connected to multiple magnetic rods (22) through a collar (21). The multiple magnetic rods (22) are evenly distributed. The stirring paddle (9) is fixedly installed on the stirring shaft (8) and located at the end close to the collar (21).

3. The stirring device for dry electrode powder fiberization according to claim 2, characterized in that, The isolation cover (12) is a cylindrical structure, and its top is fixedly connected to the inner bottom of the tank (1) through the mounting flange (17). The inner rotor (13) and the mounting flange (17) are rotatably sealed through the sealing gasket (18).

4. The stirring device for dry electrode powder fiberization according to claim 3, characterized in that, A bearing (16) is provided between the inner rotor (13) and the isolation cover (12), and the bearing (16) is located at one end of the isolation cover (12) near the mounting flange (17).

5. A stirring device for dry electrode powder fiberization according to any one of claims 1 to 4, characterized in that, The shearing and stirring assembly (10) includes a shearing disk (19) and shearing blades (20). Both the shearing disk (19) and the shearing blades (20) are fixedly connected to the inner rotor (13), and the shearing disk (19) is located above the shearing blades (20). The shearing disk (19) is a circular disk structure, and its upper and lower circumferential edges are respectively provided with outwardly inclined crushing teeth.

6. A stirring device for dry electrode powder fiberization according to claim 5, characterized in that, The shearing disc (19) is also provided with a plurality of radially distributed through slots, which are evenly distributed.

7. A stirring device for dry electrode powder fiberization according to claim 5, characterized in that, The shearing blade (20) consists of multiple fan-shaped blades evenly distributed along the circumference, and the blades are inclined at a 30° angle to the horizontal plane.

8. A stirring device for dry electrode powder fiberization according to claim 7, characterized in that, The outer edge of the shearing blade (20) is provided with continuous triangular serrations, and the blade surface of the shearing blade (20) is provided with multiple rhomboid grooves that penetrate both sides.

9. A stirring device for dry electrode powder fiberization according to claim 1, characterized in that, A hydraulic rod (4) is fixedly installed on the base (3), and the telescopic end of the hydraulic rod (4) is connected to the sealing cover (2) through a connecting rod.

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