Rotary crushing device for lithium-rich manganese-based positive electrode material

Abstract

The utility model relates to the technical field of positive electrode material processing, in particular to a rotary crushing device for a lithium-rich manganese-based positive electrode material. The top of an upper tank body is provided with a relatively rotating feed port, and the bottom of the upper tank body is provided with a conical bin for storing materials; a gear ring is arranged between the feeding port and the upper tank body, a driving motor is arranged on one side of the gear ring, and the feeding port is driven by the driving motor to rotate relative to the upper tank body; a vertical shaft and an inclined shaft arranged along the inner side wall are arranged in the conical bin; the top of the lower tank body is provided with an annular support frame, the middle part of the lower tank body is provided with a stirring shaft, and the stirring shaft extends outwards to form a scraping plate which is in contact with the lower tank body. According to the utility model, effective crushing, uniform mixing and smooth discharging of a lithium-rich manganese-based positive electrode material are realized through a triangular stirring structure formed by the feeding hole, the material distribution partition plate, the gear ring, the driving motor, the vertical shaft and the inclined shaft which rotate relatively, and the stirring shaft, the scraper blade and the elastic scraper blade which are arranged in the lower tank body.

Description

Technical Field

[0001] This utility model relates to the field of cathode material processing technology, specifically to a rotary crushing device for lithium-rich manganese-based cathode materials. Background Technology

[0002] In cathode material processing, the crushing and mixing of lithium-rich manganese-based cathode materials is crucial, directly affecting material performance and battery efficiency. However, existing crushing devices suffer from numerous problems, such as low crushing efficiency, uneven mixing, and poor discharge, severely restricting processing quality and production efficiency. To address these issues, engineers have made many attempts, but while solutions like the pet food crushing scheme in Chinese patent CN214598735U have their advantages, they have not completely solved the difficulties in cathode material processing. Specifically, existing devices often lack relatively rotating feed inlets and distribution baffles, leading to uneven distribution of cathode materials; the crushing method is singular and inefficient; the mixing flow pattern is simple and lacks uniformity; and there is a lack of effective scraping mechanisms, making them prone to residue blockage. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a rotary crushing device for lithium-rich manganese-based cathode materials.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A rotary crushing device for lithium-rich manganese-based cathode materials includes a vertical tank, which is divided into an upper tank and a lower tank, wherein:

[0006] The upper tank has a rotating feed inlet at the top and a conical storage bin at the bottom. The feed inlet is equipped with a dividing plate that divides the material into at least three parts. A toothed ring is installed between the feed inlet and the upper tank, and a drive motor is installed on one side of the toothed ring. The feed inlet rotates relative to the upper tank under the drive motor. The conical bin contains a vertical shaft and an inclined shaft installed along the inner wall. The top of the vertical shaft is connected to the top of the inclined shaft to form a triangular stirring structure.

[0007] The lower tank has an annular support frame on top, with a stirring shaft in the middle. The stirring shaft extends outward to form scrapers that contact the lower tank. Stirring rollers are spaced along the stirring shaft. Elastic scrapers are provided on the outer side of the scrapers. The stirring shaft is connected to a triangular stirring structure and to a motor at the bottom. A discharge valve is provided at the bottom of the lower tank.

[0008] This technical solution utilizes a relatively rotating feed inlet, distribution baffles, a gear ring, a drive motor, a triangular stirring structure formed by a vertical and inclined shaft, and a stirring shaft, scrapers, and elastic scrapers within the lower tank to achieve effective crushing, uniform mixing, and smooth discharge of lithium-rich manganese-based cathode materials. Specifically, the feed inlet rotates relatively and contains at least three distribution baffles, which evenly distribute the incoming lithium-rich manganese-based cathode material into the conical chamber during rotation. This not only improves the dispersion of the cathode material but also achieves initial crushing through rotation. The vertical and inclined shafts within the conical chamber form a triangular stirring structure. When these two shafts rotate, they not only crush the cathode material but also create a complex flow pattern within the conical chamber, resulting in more uniform mixing. This not only improves crushing efficiency but also ensures the uniformity of the cathode material during the crushing process. The stirring shaft within the lower tank, along with its stirring rollers, scrapers, and elastic scrapers, collectively constitute the stirring and mixing mechanism for the cathode material. The scraping system utilizes the rotation of the stirring rollers to create strong convection and shearing forces on the cathode material within the lower tank, resulting in deeper mixing and crushing. The scraper and its outer elastic blades rotate closely against the inner wall of the lower tank, effectively scraping away the cathode material adhering to the tank wall and preventing residue and blockage. Through the coordinated action of multiple components, including the rotating feed inlet in the upper tank, the triangular stirring structure within the conical chamber, and the stirring and scraping system in the lower tank, efficient crushing, uniform mixing, and smooth discharge of the lithium-rich manganese-based cathode material are achieved. The drive motor is connected to the feed inlet via a gear ring, enabling the feed inlet to rotate. The stirring shaft is connected to the triangular stirring structure and, in turn, to the motor at the bottom.

[0009] In addition, the rotary crushing device for lithium-rich manganese-based cathode materials proposed in this utility model also has the following additional technical features:

[0010] According to one embodiment of the present invention, the feed inlet is higher than the top of the upper tank and is cone-shaped.

[0011] This technical solution sets the feed inlet to be higher than the top of the upper tank and conical in shape, so as to better guide the positive electrode material into the upper tank and initially disperse it.

[0012] According to one embodiment of the present invention, the bottom side edge of the feed inlet is provided with a toothed groove that mates with the gear ring; a gear is provided on the output shaft of the drive motor, and the gear meshes with the gear ring.

[0013] This technical solution achieves relative rotation of the feed inlet by setting a toothed groove on the bottom side edge of the feed inlet to cooperate with the toothed ring, and setting a gear on the output shaft of the drive motor to mesh with the toothed ring.

[0014] According to one embodiment of the present invention, the material distribution baffle is evenly distributed in the feed inlet, and the lithium-rich manganese-based cathode material of the upper tank is evenly distributed into the conical hopper.

[0015] This technical solution ensures that the material distribution baffles are evenly distributed within the feed inlet, allowing the lithium-rich manganese-based cathode material entering the upper tank to be evenly distributed within the conical chamber, thus providing favorable conditions for subsequent crushing and mixing.

[0016] According to one embodiment of the present invention, the blades of the vertical axis and the inclined axis are evenly distributed with breaking teeth, which are made of cemented carbide material.

[0017] This technical solution improves crushing efficiency and effect by uniformly distributing crushing teeth made of hard alloy material on the blades of the vertical and inclined axes, ensuring that lithium-rich manganese-based cathode materials can be effectively crushed.

[0018] According to one embodiment of the present invention, the elastic scraper is made of polyurethane, and its edge is in close contact with the inner wall of the lower tank. As the stirring shaft rotates, it effectively scrapes off the positive electrode material adhering to the tank wall.

[0019] This technical solution uses an elastic scraper made of polyurethane, with its edges pressed tightly against the inner wall of the lower tank. As the stirring shaft rotates, it effectively scrapes away the positive electrode material adhering to the tank wall, ensuring clean discharge without residue.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] The device achieves efficient crushing and uniform mixing of lithium-rich manganese-based cathode materials through a relatively rotating feed inlet, a material distribution baffle, a triangular stirring structure, and a stirring shaft. This not only improves the dispersibility of the cathode materials but also ensures the uniformity of the cathode materials during the crushing process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] In the diagram: 1. Lower tank; 2. Inlet; 3. Divider plate; 4. Gear ring; 5. Drive motor; 6. Upper tank; 7. Inclined shaft; 8. Conical hopper; 9. Vertical shaft; 10. Support frame; 11. Agitator shaft; 12. Scraper; 13. Discharge valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] like Figure 1 As shown, this embodiment provides a rotary crushing device for lithium-rich manganese-based cathode materials, including a vertical tank, which is divided into an upper tank 6 and a lower tank 1, wherein:

[0027] The upper tank 6 has a relatively rotating feed inlet 2 at its top and a conical silo 8 for storing materials at its bottom. The feed inlet 2 is equipped with a dividing plate 3 that is divided into at least three parts. A toothed ring 4 is provided between the feed inlet 2 and the upper tank 6. A drive motor 5 is provided on one side of the toothed ring 4. The feed inlet 2 rotates relative to the upper tank 6 under the drive of the drive motor 5. The conical silo 8 contains a vertical shaft 9 and an inclined shaft 7 provided along its inner wall. The top of the vertical shaft 9 is connected to the top of the inclined shaft 7 to form a triangular stirring structure.

[0028] The lower tank 1 has an annular support frame 10 on its top, a stirring shaft 11 in its middle, and a scraper 12 extending outward from the stirring shaft 11 to contact the lower tank 1. Stirring rollers are spaced on the stirring shaft 11. Elastic scrapers are provided on the outer side of the scraper 12. The stirring shaft 11 is connected to a triangular stirring structure and to a motor at the bottom. A discharge valve 13 is provided at the bottom of the lower tank 1.

[0029] like Figure 1As shown, this technical solution achieves effective crushing, uniform mixing and smooth discharge of lithium-rich manganese-based cathode materials through a triangular stirring structure formed by a relatively rotating feed inlet 2, a material distribution baffle 3, a gear ring 4, a drive motor 5, a vertical shaft 9 and an inclined shaft 7, as well as a stirring shaft 11, a scraper 12 and an elastic scraper inside the lower tank 1. Specifically, the feed inlet 2 rotates relative to the feed material and is equipped with at least three dividing baffles 3 inside. This baffles evenly distribute the incoming lithium-rich manganese-based cathode material into the conical chamber 8 during rotation, improving the dispersion of the cathode material and achieving initial crushing through rotation. The vertical shaft 9 and inclined shaft 7 inside the conical chamber 8 form a triangular stirring structure. When these two shafts rotate, they not only crush the cathode material but also create a complex flow pattern within the conical chamber 8, achieving more uniform mixing. This not only improves crushing efficiency but also ensures the uniformity of the cathode material during the crushing process. The stirring shaft 11 inside the lower tank 1, along with its stirring rollers, scraper 12, and elastic scraper, collectively constitute the stirring and scraping mechanism for the cathode material. In addition to the system, the rotation of the stirring roller will cause the positive electrode material to form strong convection and shearing action in the lower tank 1, thereby achieving deeper mixing and crushing; the scraper 12 and its outer elastic scraper will rotate closely against the inner wall of the lower tank 1, effectively scraping off the positive electrode material attached to the tank wall, avoiding the occurrence of positive electrode material residue and blockage; through the synergistic action of multiple components such as the rotating feed port 2 of the upper tank 6, the triangular stirring structure in the conical chamber 8, and the stirring and scraping system in the lower tank 1, efficient crushing, uniform mixing and smooth discharge of lithium-rich manganese-based positive electrode material are achieved; the drive motor 5 is connected to the feed port 2 through the gear ring 4 to realize the rotation action of the feed port 2, the stirring shaft 11 is connected to the triangular stirring structure and connected to the motor at the bottom.

[0030] In addition, the rotary crushing device for lithium-rich manganese-based cathode materials proposed in this utility model also has the following additional technical features:

[0031] According to one embodiment of the present invention, the feed inlet 2 is higher than the top of the upper tank body 6, and the feed inlet 2 is cone-shaped.

[0032] This technical solution sets the feed inlet 2 to be higher than the top of the upper tank 6 and in a conical shape, so as to better guide the positive electrode material into the upper tank 6 and initially disperse it.

[0033] According to one embodiment of the present invention, the bottom side edge of the feed inlet 2 is provided with a toothed groove that mates with the gear ring 4; a gear is provided on the output shaft of the drive motor 5, and the gear meshes with the gear ring 4.

[0034] This technical solution achieves the relative rotation of the feed inlet 2 by setting a toothed groove that mates with the gear ring 4 on the bottom side edge of the feed inlet 2 and setting a gear that meshes with the gear ring 4 on the output shaft of the drive motor 5.

[0035] According to one embodiment of the present invention, the material distribution partition 3 is evenly distributed in the feed inlet 2, and the lithium-rich manganese-based cathode material of the upper tank 6 is evenly distributed into the conical chamber 8.

[0036] This technical solution ensures that the material distribution baffle 3 is evenly distributed in the feed inlet 2, so that the lithium-rich manganese-based cathode material entering the upper tank 6 can be evenly distributed in the conical chamber 8, providing favorable conditions for subsequent crushing and mixing.

[0037] According to one embodiment of the present invention, the blades of the vertical shaft 9 and the inclined shaft 7 are evenly distributed with breaking teeth, which are made of cemented carbide material.

[0038] This technical solution improves crushing efficiency and effect by uniformly distributing crushing teeth made of hard alloy material on the blades of the vertical axis 9 and the inclined axis 7, ensuring that lithium-rich manganese-based cathode materials can be effectively crushed.

[0039] According to one embodiment of the present invention, the elastic scraper is made of polyurethane, and its edge is in close contact with the inner wall of the lower tank 1. As the stirring shaft 11 rotates, it effectively scrapes off the positive electrode material attached to the tank wall.

[0040] This technical solution uses an elastic scraper made of polyurethane, with its edge tightly attached to the inner wall of the lower tank 1. As the stirring shaft 11 rotates, it effectively scrapes off the positive electrode material adhering to the tank wall, ensuring that the discharge is clean and residue-free.

[0041] The usage process of the above embodiments is as follows:

[0042] like Figure 1 As shown, the positive electrode material enters through the feed inlet 2. Due to the relative rotation of the feed inlet 2 and the presence of a material distribution baffle 3, the positive electrode material is evenly distributed into the conical chamber 8. The rotation of the feed inlet 2 initially crushes the positive electrode material. Upon entering the conical chamber 8, the positive electrode material is subjected to the crushing and stirring action of the triangular stirring structure formed by the vertical axis 9 and the inclined axis 7, creating a complex flow pattern and achieving more uniform mixing and crushing. The positive electrode material falls into the lower tank 1, where it is further subjected to the strong convection and shearing action of the stirring shaft 11 and its stirring rollers, resulting in further... The system achieves mixing and crushing; the scraper 12 and its outer elastic scraper rotate closely against the inner wall of the lower tank 1 to scrape off the positive electrode material adhering to the tank wall, avoiding positive electrode material residue and blockage; the crushed and mixed positive electrode material is smoothly discharged through the discharge valve 13; the drive motor 5 is connected to the feed inlet 2 through the gear ring 4 to realize the rotation action of the feed inlet 2; the stirring shaft 11 is connected to the triangular stirring structure and to the motor at the bottom, providing the necessary power to achieve efficient crushing, uniform mixing and smooth discharge of lithium-rich manganese-based positive electrode material.

[0043] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A rotary crushing device of a lithium-rich manganese-based positive electrode material, characterized by, The application relates to a vertical tank body, which is divided into an upper tank body (6) and a lower tank body (1), wherein: The upper tank body (6) is provided with a relative rotating feeding port (2) at the top and a storage cone (8) at the bottom; the feeding port (2) is provided with at least three separated distribution baffles (3); the feeding port (2) is provided with a gear ring (4) between the feeding port (2) and the upper tank body (6), one side of the gear ring (4) is provided with a driving motor (5), and the feeding port (2) is driven to rotate relative to the upper tank body (6); the cone (8) is provided with a vertical shaft (9) and an inclined shaft (7) arranged along the inner side wall; the top of the vertical shaft (9) is connected with the top of the inclined shaft (7) to form a triangular stirring structure; The lower tank body (1) is provided with an annular support frame (10) at the top and a stirring shaft (11) in the middle, the stirring shaft (11) is provided with a scraper (12) in contact with the lower tank body (1); the stirring shaft (11) is provided with stirring rollers at intervals; the outer side of the scraper (12) is provided with an elastic scraping piece; the stirring shaft (11) is connected with the triangular stirring structure and connected with a motor at the bottom; the bottom of the lower tank body (1) is provided with a discharging valve (13).

2. The rotary crushing device of the lithium-rich manganese-based cathode material according to claim 1, characterized in that, The feeding port (2) is higher than the top of the upper tank body (6) and is provided in a conical shape.

3. The rotary crusher of the lithium-rich manganese-based positive electrode material according to claim 1 or 2, characterized in that, The bottom side edge of the feeding port (2) is provided with a gear groove matched with the gear ring (4); the output shaft of the driving motor (5) is provided with a gear, and the gear is engaged with the gear ring (4).

4. The rotary crusher of the lithium-rich manganese-based cathode material according to claim 1, wherein, The distribution baffles (3) are uniformly distributed in the feeding port (2), and the lithium-rich manganese-based positive electrode material of the upper tank body (6) is uniformly distributed to the cone (8).

5. The rotary crusher of the lithium-rich manganese-based cathode material according to claim 1, wherein, The blades of the vertical shaft (9) and the inclined shaft (7) are uniformly provided with crushing teeth made of hard alloy material.

6. The rotary crusher of the lithium-rich manganese-based cathode material according to claim 1, wherein, The elastic scraping piece is made of polyurethane, the edge of the elastic scraping piece is close to the inner wall of the lower tank body (1), and the positive electrode material adhered to the tank wall is effectively scraped off along with the rotation of the stirring shaft (11).

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