A sieving and granulating device for dry-process electrodes

Abstract

The application relates to a sieving and granulating device for dry-process electrodes, which comprises a crushing tank with an internal stirring shaft, a dispersing box located below the crushing tank and communicated with the crushing tank, a dispersing roller arranged in the dispersing box, a grading box located below the dispersing box and communicated with the dispersing box, a grading assembly comprising a plurality of screen meshes arranged in a vertical direction, the adjacent screen meshes being oppositely inclined, at least one guide plate with the same inclination direction being arranged below the screen meshes, the guide plate receiving the sieved materials and guiding the materials to the higher end of the adjacent lower screen mesh, and a vibrating assembly comprising a U-shaped frame and a vibrating motor, wherein the U-shaped frame is arranged in the grading box through springs, and the vibrating motor is arranged between the U-shaped frame and the grading box. The application can reduce the dust raising phenomenon among the screen meshes, improve the moving path of the materials on the screen meshes, and improve the screening precision.

Description

Technical Field

[0001] This application relates to the field of dry electrode technology, and in particular to a sieve granulation apparatus for dry electrodes. Background Technology

[0002] The state of dry electrode materials has a significant impact on the quality of roll forming. In the production process of dry electrode materials, screening and granulation are required, and the screening effect and efficiency are important factors affecting the state of dry electrode materials.

[0003] Traditional screening equipment often employs multi-stage screens for sieving. For example, the pneumatic screen cleaning device disclosed in utility model CN212681661U uses a top-to-bottom multi-stage screen for sieving, enabling more detailed material screening. However, it has the following drawbacks: During the screening process of the upper screen, the material is screened along its entire path, meaning that material falls off at any point on the upper screen. This leads to severe dust generation after screening. Furthermore, material that passes through the upper screen falls directly to the end of the lower screen, resulting in a shorter movement path on the lower screen and potentially causing some material to not pass through accurately. This can lead to incomplete screening on the lower screen and affect the screening accuracy.

[0004] Therefore, there is a need to provide a dry electrode sieving and granulation device that can reduce dust and improve accuracy. Utility Model Content

[0005] Therefore, it is necessary to provide a sieve granulation device for dry electrode processing, and its specific technical solution is as follows.

[0006] A sieving and granulation apparatus for dry electrode processing, comprising: The grinding tank is equipped with an internal stirring shaft; A dispersion box is located below and connected to the grinding tank; a dispersion roller is provided inside the dispersion box. The grading box is located below the dispersion box and is connected to the dispersion box; The grading assembly includes multiple screens arranged vertically; adjacent screens are inclined in opposite directions; at least one screen is fitted with a guide plate with the same inclination direction below it, the guide plate receiving the screened material and guiding the material to the higher end of the adjacent lower screen; The vibration assembly includes a U-shaped frame and a vibration motor; the U-shaped frame is installed inside the grading box by springs, and the vibration motor is installed between the U-shaped frame and the grading box.

[0007] Furthermore, the grading component includes, from top to bottom, a coarse screen, a medium screen, and a fine screen; the coarse screen and the fine screen are inclined in the same direction; the medium screen is inclined in the opposite direction to the coarse screen. A first guide plate is installed below the coarse screen; the tilt direction of the first guide plate is the same as the tilt direction of the coarse screen, and it is used to receive the material after it has passed through the coarse screen and guide the material to the higher end of the middle screen. A second guide plate is installed below the middle screen; the second guide plate is inclined in the same direction as the middle screen, and is used to receive the material after it has passed through the middle screen and guide the material to the higher end of the fine screen.

[0008] Furthermore, the coarse screen has a larger mesh diameter than the medium screen; the medium screen has a larger mesh diameter than the fine screen.

[0009] Furthermore, a U-shaped tube is provided below the screen, and a nozzle is provided on the U-shaped tube; the nozzle faces the screen and is used to spray airflow onto the screen.

[0010] Furthermore, a spiral nozzle is installed on the nozzle.

[0011] Furthermore, a guide trough is provided at the lower end of the screen; a storage box is provided outside the grading box, and the storage box and the grading box are connected through a discharge chamber; the guide trough extends into the discharge chamber and is used to guide the material that has not passed through the screen into the discharge chamber.

[0012] Furthermore, a material conveying structure is provided between the pulverizing tank and the dispersing box; the material conveying structure includes a material conveying pipe, a rotating shaft and an auger; the material conveying pipe is connected to the pulverizing tank and the dispersing box respectively, the rotating shaft is connected to the stirring shaft, and the auger is arranged on the rotating shaft.

[0013] Furthermore, the dispersing roller includes a roller body and dispersing teeth; the surface of the roller body is provided with a plurality of dispersing teeth.

[0014] Furthermore, the dispersion box is equipped with two opposing dispersion rollers, and the dispersion teeth between the two dispersion rollers are staggered.

[0015] Furthermore, a guide plate is provided below the dispersing roller, which is used to guide the material into the screen.

[0016] Beneficial effects: The dry electrode sieving and granulation device provided by this utility model has a guide plate set below the screen. The guide plate receives the sieved material and guides it to the next screen, reducing dust between screens. Furthermore, the adjacent screens are set in opposite inclinations, so that the guide plate of the upper screen guides the sieved material to the higher end of the lower screen. This allows the sieved material to traverse the entire path of the next screen, avoiding inaccurate sieving due to a short screen path and improving sieving accuracy. Attached Figure Description

[0017] 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.

[0018] Figure 1 A schematic diagram of the overall structure of a sieving and granulation device for dry electrode processing; Figure 2 This is a cross-sectional view of the pulverizing tank and the dispersing box; Figure 3 A cross-sectional schematic diagram of a sieving and granulation device for dry electrode fabrication; Figure 4 A schematic diagram showing the grading components mounted on a U-shaped frame; Figure 5 This is a schematic diagram of a hierarchical component; Figure 6 This is a schematic diagram of a U-shaped tube; Figure 7 for Figure 6 An enlarged schematic diagram of region A in the middle.

[0019] Explanation of reference numerals in the attached drawings: 1. Crushing tank; 2. Dispersion box; 3. Grading box; 4. Feed pipe; 5. Stirring shaft; 6. Conveying structure; 7. Dispersion roller; 8. Guide plate; 9. U-shaped frame; 10. Coarse screen; 11. Medium screen; 12. Fine screen; 13. Nozzle; 14. First guide plate; 15. Second guide plate; 16. First discharge chamber; 17. First storage chamber; 18. Second discharge chamber; 19. Second storage chamber; 20. Circulation pipe; 21. Negative pressure pump; 22. Spring; 23. Vibration motor; 24. Spiral nozzle; 25. U-shaped pipe; 26. Air inlet pipe; 27. Magnetic strip. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] Example Reference Figure 1 As shown, this embodiment provides a sieving and granulation apparatus for dry electrodes, referring to... Figure 2 and Figure 3 As shown, the sieving and granulation device includes a pulverizing tank 1, a dispersing box 2, a grading box 3, a grading assembly, and a vibration assembly. The pulverizing tank 1 is equipped with a stirring shaft 5, and the pulverizing tank 1 is connected to a feed pipe 4, through which materials are transported into the pulverizing tank 1, and the stirring shaft 5 stirs the materials.

[0027] The dispersion box 2 is located below and connected to the grinding tank 1. The dispersion box 2 is equipped with a dispersion roller 7. The stirred material enters the dispersion box 2 under gravity, and the dispersion roller 7 further breaks down and disperses the material.

[0028] The grading box 3 is located below the dispersion box 2 and is connected to the dispersion box 2. (Refer to...) Figure 5 As shown, the grading component includes multiple screens arranged vertically, with adjacent screens tilted in opposite directions. It should be noted that in this embodiment, three screens are provided, while in other embodiments, at least two screens are provided. At least one screen has a guide plate with the same tilt direction installed below it; that is, the tilt direction of the screen and the guide plate below it is the same. The guide plate receives the screened material and guides it to the higher end of the adjacent lower screen. It should be noted that in this embodiment, all screens except the bottom screen have guide plates. By receiving the screened material through the guide plate and concentrating it at the end of the guide plate before it falls onto the higher end of the next screen, dust generation can be avoided, and the movement path of the material on the screen can be improved.

[0029] Reference Figure 3As shown, the vibration assembly includes a U-shaped frame 9 and a vibration motor 23. The U-shaped frame 9 is installed inside the grading box 3 via a spring 22, and the vibration motor 23 is installed between the U-shaped frame 9 and the grading box 3. Specifically, the mounting base of the vibration motor 23 is connected to the bottom of the grading box 3, and the output shaft of the vibration motor 23 is connected to the U-shaped frame 9. The vibration motor 23 drives the U-shaped frame 9 to vibrate, thereby driving the screen to vibrate, ensuring that the material fully contacts the screen and improving the material screening efficiency.

[0030] The dry electrode sieving and granulation device provided in this embodiment has a guide plate set below the screen. The guide plate receives the sieved material and guides it to the next screen, reducing dust between screens. Furthermore, adjacent screens are set in opposite inclinations, so that the guide plate of the upper screen guides the sieved material to the higher end of the lower screen. This allows the sieved material to traverse the entire path of the next screen, avoiding inaccurate sieving due to a short screen path and improving sieving accuracy.

[0031] Specifically, refer to Figure 5 As shown, the grading assembly includes a coarse screen 10, a medium screen 11, and a fine screen 12 from top to bottom; the coarse screen 10 and the fine screen 12 are inclined in the same direction and are parallel to each other; the medium screen 11 is inclined in the opposite direction to the coarse screen 10. A first guide plate 14 is installed below the coarse screen 10; the tilting direction of the first guide plate 14 is the same as the tilting direction of the coarse screen 10, and it is used to receive the material after the coarse screen 10 passes through and guide the material to the higher end of the middle screen 11. A second guide plate 15 is installed below the middle screen 11; the inclination direction of the second guide plate 15 is the same as that of the middle screen 11, and it is used to receive the material after it has passed through the middle screen 11 and guide the material to the higher end of the fine screen 12.

[0032] In this embodiment, the material after passing through the dispersion box 2 falls onto the coarse screen 10, is screened on the coarse screen 10, and then falls onto the first guide plate 14. The screened material passes through the end of the first guide plate 14 and falls onto the higher end of the middle screen 11. After being screened on the middle screen 11, the material falls onto the second guide plate 15, and then passes through the end of the second guide plate 15 and falls onto the higher end of the fine screen 12.

[0033] Specifically, the mesh diameter of the coarse screen 10 is larger than that of the medium screen 11; the mesh diameter of the medium screen 11 is larger than that of the fine screen 12. The material undergoes multi-stage screening from the coarse screen 10 to the fine screen 12, ensuring thorough screening and improving screening accuracy.

[0034] Specifically, a U-shaped tube 25 is provided below the screen, and a nozzle 13 is provided on the U-shaped tube 25; the nozzle 13 faces the screen and is used to spray airflow onto the screen. During continuous screening operations, materials may clog the screen mesh. By setting the nozzle 13 to spray airflow to clean the screen, thereby removing clogs and residual particles and preventing screen clogging. Furthermore, in reference... Figure 7 As shown, a spiral nozzle 24 is installed on the nozzle 13, which causes the nozzle 13 to spray a spiral airflow, thereby improving the cleaning ability of the nozzle 13.

[0035] It should be noted that an air inlet pipe 26 is connected to the U-shaped tube 25, which connects to the air pump. The air pump provides pressure to the nozzle 13, thereby spraying airflow onto the screen.

[0036] Specifically, the lower end of the screen is provided with a guide trough; a storage box is provided outside the grading box 3, and the storage box and the grading box 3 are connected through a discharge chamber; the guide trough extends into the discharge chamber and is used to guide the material that has not passed through the screen into the discharge chamber.

[0037] In this embodiment, the grading box 3 is provided with a first storage chamber 17 and a second storage chamber 19 at its two ends. The first storage chamber 17 is connected to the grading box 3 through a first discharge chamber 16, and the second storage chamber 19 is connected to the grading box 3 through a second discharge chamber 18. A first guide chute is provided at the end of the coarse screen 10, extending into the first discharge chamber 16 to transport materials that do not pass through the coarse screen 10 to the first storage chamber 17. A second guide chute is provided at the end of the medium screen 11, extending into the second discharge chamber 18 to transport materials that do not pass through the medium screen 11 to the second storage chamber 19. A third guide chute is provided at the end of the fine screen 12, and the first storage chamber 17 is also connected to the grading box 3 through a third discharge chamber, allowing the third guide chute to extend into the third discharge chamber, thereby transporting materials that do not pass through the fine screen 12 to the first storage chamber 17.

[0038] It should be noted that, in this embodiment, the unscreened material can also be conveyed to the crushing tank 1 for further crushing and sieving, thereby fully granulating and screening the material. Specifically, the first storage chamber 17 can be connected to the crushing tank 1 via a circulation pipe 20, and a negative pressure pump 21 can be installed on the circulation pipe 20 to convey the material in the first storage tank back to the crushing tank 1.

[0039] Specifically, continue to refer to Figure 5 As shown, the inner wall of the screen is provided with magnetic strips 27, which adsorb magnetic impurities in the material to improve the purity of the material and ensure the quality of the subsequent granulation products.

[0040] Specifically, refer to Figure 2As shown, a conveying structure 6 is provided between the pulverizing tank 1 and the dispersing box 2; the conveying structure 6 includes a conveying pipe, a rotating shaft, and an auger; the conveying pipe is connected to the pulverizing tank 1 and the dispersing box 2 respectively, the rotating shaft is connected to the stirring shaft 5, and the auger is mounted on the rotating shaft. During the rotation of the stirring shaft 5, it can drive the rotating shaft to rotate, thereby causing the auger to rotate and convey the material into the dispersing box 2.

[0041] Specifically, the dispersing roller 7 includes a roller body and dispersing teeth; the surface of the roller body is provided with multiple dispersing teeth. The dispersing box 2 contains two dispersing rollers 7 arranged opposite each other, with the dispersing teeth between the two rollers 7 staggered. The staggered dispersing teeth enable further deagglomeration of the material, making the material more evenly dispersed, so as to facilitate better screening in the grading box 3.

[0042] Specifically, a guide plate 8 is provided below the dispersing roller 7, which is used to guide the material into the screen.

[0043] Working process: The dry electrode material is conveyed into the crushing tank 1 through the feed pipe 4. The stirring shaft 5 rotates to perform preliminary crushing and mixing of the material in the crushing tank 1. During the rotation of the stirring shaft 5, the rotating shaft and auger are driven to rotate, conveying the material into the dispersion box 2. The dispersing roller 7 inside the dispersing box 2 further disperses the material, breaking up any agglomerated particles. The dispersed material then falls through the guide plate 8 to the higher end of the coarse screen 10.

[0044] Under the influence of gravity and the combined action of the vibrating components, the material moves from top to bottom on the surface of the coarse screen 10, thereby screening the material. The material passing through the coarse screen 10 enters the first guide plate 14, and under the action of the first guide plate 14, it is concentrated at the end of the first guide plate 14 and falls into the higher end of the middle screen 11. The material continues to move from top to bottom on the surface of the middle screen 11 under the action of gravity and the cooperation of the vibration components, thus screening the material again. The material passing through the middle screen 11 enters the second guide plate 15, and under the action of the second guide plate 15, it is concentrated at the end of the second guide plate 15 and falls onto the higher end of the fine screen 12. The material on the fine screen 12 continues to move from top to bottom along the surface of the fine screen 12 for screening.

[0045] During the screening process, magnetic strips 27 adsorb magnetic impurities mixed in the material, improving the purity of the material. Airflow is sprayed from nozzles 13 onto the screen to clean it and prevent clogging.

[0046] During the screening process of each screen, the unscreened material flows from the end of the screen into the corresponding storage box. The material in the storage box can be circulated to the crushing tank 1 by the negative pressure pump 21 for crushing and screening again.

[0047] 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.

[0048] 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 sieving and granulation apparatus for dry electrode processing, characterized in that, include: The grinding tank is equipped with an internal stirring shaft; A dispersion box is located below and connected to the grinding tank; a dispersion roller is provided inside the dispersion box. The grading box is located below the dispersion box and is connected to the dispersion box; The grading assembly includes multiple screens arranged vertically; adjacent screens are inclined in opposite directions; at least one screen is fitted with a guide plate with the same inclination direction below it, the guide plate receiving the screened material and guiding the material to the higher end of the adjacent lower screen; The vibration assembly includes a U-shaped frame and a vibration motor; the U-shaped frame is installed inside the grading box by springs, and the vibration motor is installed between the U-shaped frame and the grading box.

2. The sieving and granulation apparatus for dry electrodes according to claim 1, characterized in that, The grading assembly comprises, from top to bottom, a coarse screen, a medium screen, and a fine screen; the coarse and fine screens are inclined in the same direction; the medium screen is inclined in the opposite direction to the coarse screen. A first guide plate is installed below the coarse screen; the tilt direction of the first guide plate is the same as the tilt direction of the coarse screen, and it is used to receive the material after it has passed through the coarse screen and guide the material to the higher end of the middle screen. A second guide plate is installed below the middle screen; the second guide plate is inclined in the same direction as the middle screen, and is used to receive the material after it has passed through the middle screen and guide the material to the higher end of the fine screen.

3. The sieving and granulation apparatus for dry electrodes according to claim 2, characterized in that, The coarse screen has a larger mesh diameter than the medium screen; the medium screen has a larger mesh diameter than the fine screen.

4. The sieving and granulation apparatus for dry electrodes according to claim 1, characterized in that, A U-shaped tube is provided below the screen, and a nozzle is provided on the U-shaped tube; the nozzle faces the screen and is used to spray airflow onto the screen.

5. The sieving and granulation apparatus for dry electrodes according to claim 4, characterized in that, The nozzle is equipped with a spiral nozzle.

6. The sieving and granulation apparatus for dry electrodes according to claim 1, characterized in that, The lower end of the screen is provided with a guide trough; a storage box is provided outside the grading box, and the storage box and the grading box are connected through a discharge chamber; the guide trough extends into the discharge chamber and is used to guide the material that has not passed through the screen into the discharge chamber.

7. The sieving and granulation apparatus for dry electrodes according to claim 1, characterized in that, A material conveying structure is provided between the pulverizing tank and the dispersing box; the material conveying structure includes a material conveying pipe, a rotating shaft and an auger; the material conveying pipe is connected to the pulverizing tank and the dispersing box respectively, the rotating shaft is connected to the stirring shaft, and the auger is set on the rotating shaft.

8. The sieving and granulation apparatus for dry electrodes according to claim 1, characterized in that, The dispersing roller includes a roller body and dispersing teeth; the surface of the roller body is provided with multiple dispersing teeth.

9. A sieving and granulation apparatus for dry electrodes according to claim 8, characterized in that, The dispersion box is equipped with two opposing dispersion rollers, and the dispersion teeth between the two dispersion rollers are staggered.

10. A sieving and granulation apparatus for dry electrodes according to claim 1, characterized in that, A guide plate is provided below the dispersing roller, which is used to guide the material into the screen.

Images