Battery-grade material preparation apparatus and method of operating the same

Abstract

The application discloses a battery-grade material preparation device and an operating method thereof, and relates to the technical field of battery-grade material preparation.The application comprises a processing tank body, a supporting seat, a feeding pipe, a discharging pipe, a stirring rod, a driving motor, a conveying pipe, a limiting baffle, a rubber sealing sleeve, an air bag body and a pneumatic valve, and the conveying pipe is sent into the feeding pipe by installing the conveying pipe, the limiting baffle, the rubber sealing sleeve, the air bag body and the pneumatic valve, the limiting baffle is in contact with the top end of the feeding pipe, compressed air is introduced into the pneumatic valve, the air bag body in the rubber sealing sleeve is inflated, the rubber sealing sleeve fills the gap between the conveying pipe and the feeding pipe, sealing is completed, dry gas is sent into the processing tank body through the conveying pipe, the inside of the processing tank body is subjected to drying treatment, and sealing can be adapted to feeding pipes with different diameters.

Description

Technical Field

[0001] This invention belongs to the field of battery-grade material preparation technology, and in particular relates to a battery-grade material preparation apparatus and its operation method. Background Technology

[0002] The stirred tank is a core piece of equipment for the preparation of battery-grade materials. It is used for the co-precipitation reaction or slurry mixing of cathode material (such as lithium iron phosphate and ternary materials) precursors. By precisely controlling the stirring speed, temperature, atmosphere and feeding sequence, it ensures that the product has uniform particle size, uniform composition and low impurity content, which directly affects the electrochemical performance and batch consistency of the material. Therefore, it is a key device for the preparation of battery-grade materials.

[0003] In the preparation of battery-grade materials, the mixing tank must be thoroughly dried before use to avoid the introduction of impurities by residual moisture, which would affect the purity and electrochemical performance of the materials. However, existing mixing tanks generally lack dedicated drying auxiliary structures. In particular, when connecting to an external drying gas source, it is difficult to adapt to the feed inlets of different manufacturers and specifications. Since the feed inlet sizes vary and most are standard flange interfaces, traditional sealing methods such as O-rings or fixed joints cannot achieve reliable fit, which easily leads to problems such as air leakage and poor sealing. Operators often have to temporarily use non-standard methods such as tape and gaskets, which is not only inefficient but also poses a risk of contamination. In addition, frequent disassembly and assembly also affects the life of the equipment seal. Therefore, the lack of a universal, convenient, and highly sealing connection structure in the drying pretreatment stage of existing mixing tanks seriously restricts their functionality and automation level in high-cleanliness scenarios. Summary of the Invention

[0004] The purpose of this invention is to provide a battery-grade material preparation device and its operation method. Through the cooperation between components such as the conveying pipe, limiting baffle, rubber sealing sleeve, airbag body and pneumatic valve, it is possible to quickly seal feed pipes of different diameters, thereby improving the convenience of the drying auxiliary structure.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a battery-grade material preparation apparatus, comprising a processing tank body, a support base, an inlet pipe, an outlet pipe, a stirring rod, and a drive motor. The support base is fixedly connected to the bottom of the processing tank body, and the inlet pipe is connected to the top of the processing tank body. An outlet pipe communicating with the processing tank body is located on one side of the inlet pipe. A stirring rod is located inside the processing tank body. A drive motor is fixedly connected to the top of the processing tank body, and the output shaft of the drive motor is fixedly connected to the top of the stirring rod. A conveying pipe passes through the inlet pipe, and a limit baffle is fixedly connected to the conveying pipe. The lower surface of the limit baffle contacts the top of the inlet pipe. A rubber sealing sleeve located inside the inlet pipe is fixedly connected to the conveying pipe. An airbag body is located inside the rubber sealing sleeve, and a pneumatic valve communicating with the airbag body is fixedly connected to the rubber sealing sleeve. The pneumatic valve passes through the limit baffle.

[0007] Furthermore, the side of the rubber sealing sleeve has a corrugated design.

[0008] Furthermore, the limiting baffle is symmetrically provided with guide grooves, and a protective shell communicating with the guide groove is symmetrically fixedly connected to the upper surface of the limiting baffle. An extrusion block that passes through the guide groove is slidably connected inside the protective shell, and a threaded rod that meshes with the extrusion block is rotatably connected inside the protective shell.

[0009] Furthermore, a worm gear body that is rotatably connected to the protective shell is fixedly connected to the threaded rod, and a worm body that is rotatably connected to the protective shell is meshed on the worm gear body, with one end of the worm body passing through the surface of the protective shell.

[0010] Furthermore, a rubber pad is fixedly connected to the bottom end of the extrusion block, and the edge of the rubber pad is rounded.

[0011] Furthermore, a central mounting seat is symmetrically provided below the rubber sealing sleeve and is fixedly connected to the conveying pipe. A central mounting cover is bolted to the central mounting seat. A spring block that passes through the central mounting cover is slidably connected inside the central mounting seat. The spring block is in contact with the inner wall of the feed pipe.

[0012] Furthermore, the bottom end of the stirring rod is fixedly connected to a connecting rod that is rotatably connected to the inner wall of the processing tank body, and elastic brush plates that are in contact with the inner wall of the processing tank body are symmetrically fixedly connected to the connecting rod.

[0013] Furthermore, a first spiral plate located inside the processing tank body is fixedly connected to the stirring rod.

[0014] Furthermore, a second spiral plate is provided below the first spiral plate and is fixedly connected to the stirring rod, the second spiral plate being located inside the processing tank body.

[0015] A method for operating a battery-grade material preparation apparatus includes:

[0016] A1. Insert the conveying pipe into the feed pipe. The limiting baffle contacts the top of the feed pipe. Compressed air enters the airbag body through the pneumatic valve. The airbag body expands, causing the rubber sealing sleeve to expand. The rubber sealing sleeve contacts the inner wall of the feed pipe. Dry gas is then introduced into the processing tank body through the conveying pipe.

[0017] A2, the conveying pipe enters the feed pipe, the spring block slides inside the centering mounting base and centering mounting cover, and the spring block contacts the inner wall of the feed pipe, positioning the conveying pipe in the center inside the feed pipe:

[0018] A3, rotate the worm gear body, causing the worm wheel body and threaded rod to rotate inside the protective shell, causing the extrusion block to approach the edge of the feed pipe flange. The rubber gasket extrudes the flange edge, firmly connecting the feed pipe and the limit baffle:

[0019] A4. When the drying gas is introduced, the drive motor is started, which drives the stirring rod to rotate inside the processing tank. The connecting rod drives the elastic brush plate to clean the water film on the inner wall of the processing tank. The first and second spiral plates make full contact with the inner wall of the processing tank using the drying gas.

[0020] A5. After the main body of the processing tank has been dried, the pneumatic valve discharges the compressed air inside the airbag body, and the rubber sealing sleeve no longer contacts the inner wall of the feed pipe. The conveying pipe is pulled out of the feed pipe, and the battery electrode material is sent into the main body of the processing tank through the feed pipe. The drive motor drives the stirring rod to rotate, and in conjunction with the heating of the main body of the processing tank, the battery electrode material is prepared. The first spiral plate and the second spiral plate assist the stirring rod in stirring.

[0021] The present invention has the following beneficial effects:

[0022] 1. This invention involves installing a conveying pipe, a limiting baffle, a rubber sealing sleeve, an airbag body, and a pneumatic valve. The conveying pipe is inserted into the feed pipe, the limiting baffle contacts the top of the feed pipe, and compressed air is introduced through the pneumatic valve, causing the airbag body inside the rubber sealing sleeve to expand. The rubber sealing sleeve fills the gap between the conveying pipe and the feed pipe, completing the seal. Drying gas is then sent into the processing tank body through the conveying pipe to dry the interior of the processing tank body. This invention can adapt to sealing feed pipes of different diameters.

[0023] 2. This invention, by installing a guide groove, a protective shell, an extrusion block, and a threaded rod, allows the threaded rod to rotate inside the protective shell when the limiting baffle contacts the top of the feed pipe. This causes the extrusion block to move closer to the flange of the feed pipe, firmly connecting the limiting baffle to the feed pipe. This prevents the feed pipe and the limiting baffle from separating due to the reaction force when dry gas is introduced into the conveying pipe, thus increasing the functionality of the limiting baffle. The two extrusion blocks can move closer or further apart to accommodate flanges of different diameters.

[0024] 3. This invention uses a centering mounting base, a centering mounting cover, and a spring block. When the conveying pipe enters the feed pipe, the spring block contacts the inner wall of the feed pipe to center and position the conveying pipe. After the conveying pipe has been used for a period of time, the bolts on the centering mounting cover are rotated in the opposite direction to separate the centering mounting base and the centering mounting cover, and the spring on the spring block is removed for replacement and maintenance.

[0025] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a cross-sectional view of the main body of the processing tank from one angle according to the present invention;

[0029] Figure 3 This is a cross-sectional schematic diagram of the limiting baffle of the present invention;

[0030] Figure 4 This is a cross-sectional schematic diagram of the limiting baffle and protective shell of the present invention;

[0031] Figure 5 This is a cross-sectional schematic diagram of the center mounting base and center mounting cover of the present invention;

[0032] Figure 6 This is a cross-sectional view of the main body of the processing tank from another angle according to the present invention.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Processing tank body; 2. Support base; 3. Feed pipe; 4. Discharge pipe; 5. Stirring rod; 6. Drive motor; 7. Conveying pipe; 8. Limiting baffle; 9. Rubber sealing sleeve; 10. Airbag body; 11. Pneumatic valve; 12. Guide groove; 13. Protective shell; 14. Extrusion block; 15. Threaded rod; 16. Worm gear body; 17. Worm body; 18. Rubber pad; 19. Centered mounting base; 20. Centered mounting cover; 21. Spring block; 22. Linkage rod; 23. Elastic brush plate; 24. First spiral plate; 25. Second spiral plate. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-6 This invention relates to a battery-grade material preparation apparatus, comprising a processing tank body 1, a support base 2, an inlet pipe 3, an outlet pipe 4, a stirring rod 5, and a drive motor 6. The support base 2 is fixedly connected to the bottom of the processing tank body 1, and the inlet pipe 3 is connected to the top of the processing tank body 1. An outlet pipe 4, communicating with the processing tank body 1, is located on one side of the inlet pipe 3. The stirring rod 5 is located inside the processing tank body 1. The drive motor 6 is fixedly connected to the top of the processing tank body 1, and the output shaft of the drive motor 6 is fixedly connected to the top of the stirring rod 5. A conveying pipe 7 passes through the inlet pipe 3, and a limiting baffle 8 is fixedly connected to the conveying pipe 7. The lower surface of the limiting baffle 8 is flush with the inlet pipe 3. At the top contact point, a rubber sealing sleeve 9 is fixedly connected to the conveying pipe 7, which is located inside the feed pipe 3. An airbag body 10 is located inside the rubber sealing sleeve 9. A pneumatic valve 11, which communicates with the airbag body 10, is fixedly connected to the rubber sealing sleeve 9. The pneumatic valve 11 passes through the limiting baffle 8. The outer surface diameter of the conveying pipe 7 is always smaller than the inner wall diameter of the feed pipe 3. A drying gas pipeline is connected to the top of the conveying pipe 7. The pneumatic valve 11 is connected to a compressed air pipeline. The drying gas pipeline and the compressed air pipeline are existing technologies and are not specifically drawn in the attached drawings. The processing tank body 1 is a simple tank shape. Other functional pipelines are not drawn in the attached drawings.

[0037] A specific application of this embodiment is as follows: The conveying pipe 7 is sent into the feed pipe 3, the limiting baffle 8 contacts the top of the feed pipe 3, and the pneumatic valve 11 introduces compressed air, causing the airbag body 10 inside the rubber sealing sleeve 9 to expand. The rubber sealing sleeve 9 fills the gap between the conveying pipe 7 and the feed pipe 3, completing the seal. Dry gas is sent into the processing tank body 1 through the conveying pipe 7 to dry the inside of the processing tank body 1. It can adapt to sealing different diameter feed pipes 3. After the processing tank body 1 has been dried, the compressed air inside the airbag body 10 is released through the pneumatic valve 11, and the conveying pipe 7 is pulled out of the feed pipe 3. The battery electrode material enters the processing tank body 1 from the top of the feed pipe 3. The drive motor 6 is started, driving the stirring rod 5 to rotate inside the processing tank body 1. In conjunction with the heating treatment of the processing tank body 1, the battery electrode material is prepared. After preparation, it is taken out through the discharge pipe 4.

[0038] The rubber sealing sleeve 9 has a corrugated design on its sides.

[0039] One specific application of this embodiment is that after the rubber sealing sleeve 9 is expanded, each crest forms a sealing barrier with the inner wall of the feed pipe 3, forming a multi-level sealing structure, which improves the sealing effect. Even if any part of the ring is partially damaged, the sealing performance can still be completed.

[0040] The limiting baffle 8 is symmetrically provided with guide grooves 12. The upper surface of the limiting baffle 8 is symmetrically fixedly connected with a protective shell 13 that communicates with the guide groove 12. The protective shell 13 is slidably connected with an extrusion block 14 that passes through the guide groove 12. The protective shell 13 is rotatably connected with a threaded rod 15 that meshes with the extrusion block 14. The flange diameter of the feed pipe 3 is always smaller than the length of the limiting baffle 8.

[0041] One specific application of this embodiment is as follows: when the limiting baffle 8 contacts the top of the feed pipe 3, the threaded rod 15 rotates inside the protective shell 13, driving the extrusion block 14 to approach the flange part of the feed pipe 3, thus firmly connecting the limiting baffle 8 and the feed pipe 3. This prevents the reaction force from causing the feed pipe 3 and the limiting baffle 8 to separate when dry gas is introduced into the conveying pipe 7, thereby increasing the functionality of the limiting baffle 8. The two extrusion blocks 14 can move closer or further away from each other to accommodate flanges of different diameters.

[0042] A worm gear body 16, which is rotatably connected to the protective shell 13, is fixedly connected to the threaded rod 15. A worm body 17, which is rotatably connected to the protective shell 13, is meshed on the worm gear body 16. One end of the worm body 17 passes through the surface of the protective shell 13, and a rotating wheel is fixedly connected to one end of the worm body 17.

[0043] One specific application of this embodiment is: rotating the rotating wheel at one end of the worm body 17, causing the worm body 17 to rotate inside the protective shell 13. The worm body 17 drives the worm wheel body 16 and the threaded rod 15 to rotate. The worm wheel body 16 and the worm body 17 have a self-locking effect, which can prevent the threaded rod 15 from rotating easily, improve the stability of the threaded rod 15, and ensure that the extrusion block 14 will not move easily.

[0044] A rubber pad 18 is fixedly connected to the bottom of the extrusion block 14. The edge of the rubber pad 18 is rounded. The flange height of the feed pipe 3 is always less than the height of the rubber pad 18.

[0045] One specific application of this embodiment is as follows: before the extrusion block 14 extrudes the flange edge of the feed pipe 3, the rubber pad 18 first contacts the flange edge. The rubber pad 18 is deformed by the extrusion, ensuring a firm connection. The rubber pad 18 can adapt to flanges of different heights. At the same time, the rubber pad 18 can also buffer and protect the extrusion block 14, reduce wear on the surface of the extrusion block 14, and extend its service life.

[0046] Four symmetrically arranged centering mounting seats 19 are fixedly connected to the conveying pipe 7 below the rubber sealing sleeve 9. Centering mounting covers 20 are bolted to the centering mounting seats 19. Spring blocks 21 that pass through the centering mounting covers 20 are slidably connected inside the centering mounting seats 19. Spring blocks 21 are in contact with the inner wall of the feed pipe 3. The centering mounting seats 19 and centering mounting covers 20 are quickly assembled through positioning holes and positioning pins.

[0047] One specific application of this embodiment is as follows: when the conveying pipe 7 enters the feed pipe 3, the spring block 21 contacts the inner wall of the feed pipe 3 to center the conveying pipe 7. After the conveying pipe 7 has been used for a period of time, the bolts on the centering mounting cover 20 are rotated in the opposite direction to separate the centering mounting seat 19 and the centering mounting cover 20, and the spring on the spring block 21 is removed for replacement and maintenance.

[0048] The bottom end of the stirring rod 5 is fixedly connected to a connecting rod 22 that is rotatably connected to the inner wall of the processing tank body 1. Elastic brush plates 23 that are in contact with the inner wall of the processing tank body 1 are symmetrically fixedly connected to the connecting rod 22.

[0049] One specific application of this embodiment is as follows: before the drying gas is introduced into the feed pipe 3, the drive motor 6 drives the stirring rod 5 to rotate inside the processing tank body 1, and the elastic brush plate 23 breaks up the water film on the inner wall of the processing tank body 1. In conjunction with the drying gas, the drying speed of the processing tank body 1 is increased.

[0050] A first spiral plate 24 located inside the processing tank body 1 is fixedly connected to the stirring rod 5.

[0051] One specific application of this embodiment is as follows: during the process of the feed pipe 3 passing through the drying gas, the stirring rod 5 drives the first spiral plate 24 to rotate, conveying the drying gas downward. At the same time, when the battery electrode material enters the processing tank body 1 through the feed pipe 3, the first spiral plate 24 can prevent the battery electrode material from directly colliding with the stirring blade part on the surface of the stirring rod 5, thereby increasing the functionality of the stirring rod 5.

[0052] Below the first spiral plate 24, there is a second spiral plate 25 that is fixedly connected to the stirring rod 5. The second spiral plate 25 is located inside the processing tank body 1, and the first spiral plate 24 and the second spiral plate 25 convey in opposite directions.

[0053] One specific application of this embodiment is that when the first spiral plate 24 conveys the dry gas downward, the second spiral plate 25 conveys the dry gas upward. The two work together to ensure that the dry gas contacts the dead corners of the inner wall of the processing tank body 1. The first spiral plate 24 and the second spiral plate 25 can also assist the stirring rod 5 in mixing the battery electrode materials and improve the stirring efficiency.

[0054] A method for operating a battery-grade material preparation apparatus includes:

[0055] A1. Insert the conveying pipe 7 into the feed pipe 3. The limiting baffle 8 contacts the top of the feed pipe 3. Compressed air enters the airbag body 10 through the pneumatic valve 11. The airbag body 10 expands, causing the rubber sealing sleeve 9 to expand. The rubber sealing sleeve 9 contacts the inner wall of the feed pipe 3. Dry gas is then introduced into the processing tank body 1 through the conveying pipe 7.

[0056] A2, the conveying pipe 7 enters the feed pipe 3, the spring block 21 slides inside the centering mounting base 19 and the centering mounting cover 20, and the spring block 21 contacts the inner wall of the feed pipe 3, positioning the conveying pipe 7 in the center inside the feed pipe 3:

[0057] A3, rotating the worm gear body 17 drives the worm wheel body 16 and the threaded rod 15 to rotate inside the protective shell 13, causing the extrusion block 14 to approach the flange edge of the feed pipe 3. The rubber gasket 18 extrudes the flange edge, firmly connecting the feed pipe 3 and the limit baffle 8.

[0058] A4. When the drying gas is introduced, the drive motor 6 is started, which drives the stirring rod 5 to rotate inside the processing tank body 1. The connecting rod 22 drives the elastic brush plate 23 to clean the water film on the inner wall of the processing tank body 1. The first spiral plate 24 and the second spiral plate 25 make full contact with the inner wall of the processing tank body 1 using the drying gas.

[0059] A5. After the main body of the processing tank 1 has completed the drying process, the pneumatic valve 11 discharges the compressed air inside the airbag body 10, the rubber sealing sleeve 9 no longer contacts the inner wall of the feed pipe 3, the conveying pipe 7 is pulled out of the feed pipe 3, and the battery electrode material is sent into the processing tank 1 through the feed pipe 3. The drive motor 6 drives the stirring rod 5 to rotate, and in conjunction with the heating of the processing tank 1, the battery electrode material is prepared. The first spiral plate 24 and the second spiral plate 25 assist the stirring rod 5 in stirring.

[0060] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0061] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A battery-grade material preparation apparatus, comprising a processing tank body (1), a support base (2), an inlet pipe (3), an outlet pipe (4), a stirring rod (5), and a drive motor (6), wherein the processing tank body (1) is fixedly connected to the bottom end of the support base (2), the top end of the processing tank body (1) is connected to the inlet pipe (3), one side of the inlet pipe (3) is provided with an outlet pipe (4) connected to the processing tank body (1), the processing tank body (1) is provided with a stirring rod (5) inside, the top end of the processing tank body (1) is fixedly connected to the drive motor (6), and the output shaft of the drive motor (6) is fixedly connected to the top end of the stirring rod (5), characterized in that: The feed pipe (3) is connected to a conveying pipe (7). A limiting baffle (8) is fixedly connected to the conveying pipe (7). The lower surface of the limiting baffle (8) is in contact with the top of the feed pipe (3). A rubber sealing sleeve (9) located inside the feed pipe (3) is fixedly connected to the conveying pipe (7). An airbag body (10) is provided inside the rubber sealing sleeve (9). A pneumatic valve (11) communicating with the airbag body (10) is fixedly connected to the rubber sealing sleeve (9). The pneumatic valve (11) is connected to the limiting baffle (8). The side of the rubber sealing sleeve (9) is corrugated. Guide grooves (12) are symmetrically opened on the limiting baffle (8). The upper surface of the protective shell (13) is symmetrically fixedly connected to the guide groove (12). The protective shell (13) is slidably connected to the extrusion block (14) that passes through the guide groove (12). The protective shell (13) is rotatably connected to the threaded rod (15) that meshes with the extrusion block (14). The rubber sealing sleeve (9) is symmetrically provided with a central mounting seat (19) that is fixedly connected to the conveying pipe (7). The central mounting seat (19) is bolted to a central mounting cover (20). The central mounting seat (19) is slidably connected to a spring block (21) that passes through the central mounting cover (20). The spring block (21) is in contact with the inner wall of the feed pipe (3).

2. The battery-grade material preparation apparatus according to claim 1, characterized in that, The threaded rod (15) is fixedly connected to a worm gear body (16) that is rotatably connected to the protective shell (13). The worm gear body (16) is meshed with a worm shaft body (17) that is rotatably connected to the protective shell (13). One end of the worm shaft body (17) passes through the surface of the protective shell (13).

3. The battery-grade material preparation apparatus according to claim 1, characterized in that, The bottom end of the extrusion block (14) is fixedly connected to a rubber pad (18), and the edge of the rubber pad (18) is rounded.

4. The battery-grade material preparation apparatus according to claim 1, characterized in that, The bottom end of the stirring rod (5) is fixedly connected to a connecting rod (22) that is rotatably connected to the inner wall of the processing tank body (1). An elastic brush plate (23) that contacts the inner wall of the processing tank body (1) is symmetrically fixedly connected to the connecting rod (22).

5. The battery-grade material preparation apparatus according to claim 4, characterized in that, A first spiral plate (24) located inside the processing tank body (1) is fixedly connected to the stirring rod (5).

6. The battery-grade material preparation apparatus according to claim 5, characterized in that, Below the first spiral plate (24) is a second spiral plate (25) that is fixedly connected to the stirring rod (5), and the second spiral plate (25) is located inside the processing tank body (1).

7. An operating method for a battery-grade material preparation apparatus, applicable to the battery-grade material preparation apparatus according to any one of claims 1-6, characterized in that, include: A1, insert the conveying pipe (7) into the feed pipe (3), and the limiting baffle (8) contacts the top of the feed pipe (3). Compressed gas enters the airbag body (10) through the pneumatic valve (11). The airbag body (10) expands, causing the rubber sealing sleeve (9) to expand. The rubber sealing sleeve (9) contacts the inner wall of the feed pipe (3). Dry gas is then introduced into the conveying pipe (7) and sent into the processing tank body (1). A2, the conveying pipe (7) enters the feed pipe (3), the spring block (21) slides inside the centering mounting base (19) and the centering mounting cover (20), the spring block (21) contacts the inner wall of the feed pipe (3), and positions the conveying pipe (7) in the center inside the feed pipe (3): A3, rotate the worm gear body (17), causing the worm wheel body (16) and threaded rod (15) to rotate inside the protective shell (13), causing the extrusion block (14) to approach the flange edge of the feed pipe (3), and the rubber gasket (18) to extrude the flange edge, thus firmly connecting the feed pipe (3) and the limiting baffle (8): A4. When the drying gas is introduced, the drive motor (6) is started, which drives the stirring rod (5) to rotate inside the processing tank body (1). The connecting rod (22) drives the elastic brush plate (23) to clean the water film on the inner wall of the processing tank body (1). The first spiral plate (24) and the second spiral plate (25) use the drying gas to fully contact the inner wall of the processing tank body (1). A5. After the main body of the processing tank (1) has completed the drying process, the pneumatic valve (11) discharges the compressed air inside the airbag body (10), the rubber sealing sleeve (9) no longer contacts the inner wall of the feed pipe (3), the conveying pipe (7) is pulled out of the feed pipe (3), and the battery electrode material is sent into the processing tank body (1) through the feed pipe (3). The drive motor (6) drives the stirring rod (5) to rotate, and the processing tank body (1) is heated to prepare the battery electrode material. The first spiral plate (24) and the second spiral plate (25) assist the stirring rod (5) in stirring.

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