Dissolving kettle for producing high-efficiency battery-grade lithium carbonate

Abstract

The utility model discloses a high-efficiency dissolving kettle for producing battery-grade lithium carbonate, which comprises a dissolving reaction kettle, a motor fixedly mounted in the middle of the upper end of the dissolving reaction kettle, a stirring rod fixedly connected to the output end of the motor, and a mixing and adding assembly arranged at the upper end of the dissolving reaction kettle, the mixing and adding assembly is used for adding and preliminarily mixing materials, the connecting hopper is arranged at the lower end of the dissolving reaction kettle in a sleeving mode, a filter screen is arranged in the middle of the connecting hopper, and sealing rings are arranged between the connecting hopper and the filter screen and between the filter screen and the dissolving reaction kettle in an attached mode. According to the efficient dissolving kettle for producing the battery-grade lithium carbonate, through the arrangement of the mixing and adding assembly, materials added into the dissolving reaction kettle can be preliminarily mixed, the mixed materials can be conveniently filtered, the dissolving reaction kettle, the connecting hopper and the filter screen can be conveniently detached and cleaned, and residues are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field related to the production of battery-grade lithium carbonate, and specifically relates to a dissolving kettle for efficiently producing battery-grade lithium carbonate. Background Art

[0002] Battery-grade lithium carbonate is an important lithium compound and an important material in modern battery manufacturing. Its use is particularly prominent in fields such as electric vehicles and energy storage systems. It is one of the key raw materials for the positive electrode materials of lithium-ion batteries, playing a key role in lithium-ion batteries. It can improve the energy density of the battery, extend the battery life, and significantly improve the charge and discharge performance of the battery. During the production process of battery-grade lithium carbonate, it is necessary to use corresponding production reactors to mix various raw materials;

[0003] Referring to the Chinese patent authorization announcement number CN220478825U, the authorization announcement date is February 13, 2024, which discloses a reactor for producing battery-grade lithium carbonate, including a reactor body, two crushing devices, a stirring assembly, and an air inlet pipe. The top of the reactor body is provided with two feeding ports for adding a precipitant and a control agent respectively, and the feeding ports are connected with feeding pipes extending into the reactor body; the two crushing devices are arranged in one-to-one correspondence with the two feeding pipes. The crushing device has a crushing cylinder body connected to the reactor body and extending obliquely downward into the reactor body. The outer wall of the crushing cylinder body is provided with a crushing inlet and a crushing outlet; the stirring assembly includes a stirring shaft and stirring blades; the air inlet pipe is connected to the lower end of the stirring shaft, and the inside of the stirring shaft is communicated with the air inlet pipe. A plurality of air inlet holes are provided on the outer circumference of the air inlet pipe. The reactor for producing battery-grade lithium carbonate provided by the utility model can further reduce the particle size of lithium carbonate crystals and make them more uniform, avoid the agglomeration phenomenon, and improve the production quality of lithium carbonate;

[0004] However, in the prior art, most only stir the mixture inside the kettle through a stirring rod, and the actual mixing effect is insufficient. It is not convenient to filter the mixed materials, and it is not convenient to disassemble and clean the inside of the kettle after use. There is a problem that the inside of the kettle is prone to residue, such as the problem existing in the above-listed comparative patent;

[0005] Therefore, we propose a dissolving kettle for efficiently producing battery-grade lithium carbonate to solve the above problems. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a dissolving kettle for the production of high-efficiency battery-grade lithium carbonate, so as to solve the problems raised in the above-mentioned background technology that most of them only stir the mixture inside the kettle through a stirring rod, the actual mixing effect is insufficient, it is inconvenient to filter the mixed material, and it is inconvenient to disassemble and clean the inside of the kettle after use, and the inside of the kettle is easy to remain.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A dissolving kettle for the production of high-efficiency battery-grade lithium carbonate, including a dissolving reaction kettle, a motor fixedly installed in the middle of the upper end of the dissolving reaction kettle, and a stirring rod fixedly connected to the output end of the motor;

[0008] It further includes:

[0009] A mixing and adding component, the mixing and adding component is arranged at the upper end of the dissolving reaction kettle, and the mixing and adding component is used for adding and preliminarily mixing materials;

[0010] A connecting hopper, the connecting hopper is sleeved at the lower end of the dissolving reaction kettle, a filter screen is arranged in the middle of the connecting hopper, and sealing rings are respectively arranged between the connecting hopper and the filter screen and between the filter screen and the dissolving reaction kettle, and a valve is fixedly installed at the lower end of the connecting hopper;

[0011] Among them, the upper end of the connecting hopper is fixedly connected with a vertical plate, and the vertical plates are arranged at equal angles at the upper end of the connecting hopper, and the vertical plates drive the connecting hopper to form a telescopic structure at the lower end of the dissolving reaction kettle.

[0012] Preferably, one end of the stirring rod close to the inner side wall of the dissolving reaction kettle is fixedly connected with a scraper, and the scraper is attached to the inner side wall of the dissolving reaction kettle, and a fixing block in a "T" - shaped structure is fixedly connected to the edge of the lower end of the dissolving reaction kettle.

[0013] Preferably, the fixing blocks and the vertical plates are arranged in one-to-one correspondence, and the fixing blocks and the vertical plates are connected by card slots.

[0014] Preferably, the mixing and adding component includes feeding cylinders fixedly connected to the left and right sides of the upper end of the dissolving reaction kettle, a hollow barrel connected to the lower end of the feeding cylinder, and a feeding pipe connected to the hollow barrel through an inclined pipe.

[0015] Preferably, the feeding pipe is located above the stirring rod, openings are arranged at equal angles at the lower end of the feeding pipe, and the upper end of the stirring rod passes through the middle of the hollow barrel, and there is no interference between the stirring rod and the hollow barrel.

[0016] Preferably, the outer side surface of the upper end of the vertical plate is fixedly connected with a connecting rod, and the connecting rod and the connecting plate form a sliding structure, and the connecting plate and the supporting plate are attached to each other.

[0017] Preferably, the connecting plate is connected to the fixing rod through a clamping groove, and the fixing rod is fixedly connected to the upper end of the supporting plate, and the supporting plate is fixed to the outer side of the upper end of the dissolution reaction kettle.

[0018] Preferably, a fixing cap is threadedly connected to the upper end of the fixing rod, and the fixing cap is snap-fitted to the upper end of the connecting plate.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows: for the dissolution kettle used in the production of high-efficiency battery-grade lithium carbonate, through the setting of the mixing and adding assembly, the materials added into the dissolution reaction kettle can be preliminarily mixed. Combining the stirring rod and the scraper to mix and stir the preliminarily mixed materials, so as to achieve a more sufficient mixing effect. Combining the setting of the filter screen, it is convenient to filter the mixed materials. Moreover, by sliding between the vertical plate and the fixed block, the connecting hopper is driven to expand and contract downward, so as to facilitate the disassembly and cleaning of the dissolution reaction kettle, the connecting hopper and the filter screen, prevent residues, and prevent the filter screen from being blocked;

[0020] 1. It is provided with a mixing and adding assembly, a scraper and a stirring rod. The mixing and adding assembly includes a feeding cylinder, a hollow barrel and a feeding pipe. Through the setting of the mixing and adding assembly, the raw materials added into the dissolution reaction kettle can be preliminarily mixed. Combining the setting of the stirring rod and the scraper to stir the preliminarily mixed materials, so as to improve the overall mixing effect;

[0021] 2. It is provided with a connecting hopper and a filter screen. A filter screen is arranged in the connecting hopper. Through the setting of the filter screen, it is convenient to filter the mixed and dissolved materials;

[0022] 3. It is provided with a vertical plate and a fixed block. The vertical plates are arranged at equal angles at the upper end of the connecting hopper. By sliding up and down between the vertical plate and the fixed block, it is convenient to drive the connecting hopper to expand and contract at the lower end of the dissolution reaction kettle, separate the connecting hopper from the dissolution reaction kettle, so as to facilitate the disassembly and cleaning of the dissolution reaction kettle and the filter screen, prevent residues, and prevent the filter screen from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0024] Figure 2 is a schematic diagram of the front sectional structure of the present utility model;

[0025] Figure 3 is a schematic diagram of the disassembled structure of the dissolution reaction kettle, the stirring rod and the scraper of the present utility model;

[0026] Figure 4 is a schematic diagram of the connection and upward view structure of the feeding cylinder, the hollow barrel and the feeding pipe of the present utility model;

[0027] Figure 5 This is a schematic top view of the connection of the dissolving reactor, connecting hopper, connecting rod and connecting plate of the present utility model;

[0028] Figure 6 This is a schematic view of the disassembled state of the connecting hopper, vertical plate, fixed block and the extended part of the dissolving reactor of the present utility model;

[0029] Figure 7 This is an exploded view of the connection of the connecting hopper, filter screen and sealing ring of the present utility model;

[0030] Figure 8 This is the present utility model Figure 1 The enlarged schematic view of part A in;

[0031] Figure 9 This is an exploded view of the connection of the connecting rod, connecting plate, support plate, fixed rod and fixed cap of the present utility model.

[0032] In the figure: 1, dissolving reactor; 2, motor; 3, stirring rod; 4, scraper; 5, mixing and adding assembly; 6, feeding cylinder; 7, hollow barrel; 8, feeding pipe; 9, connecting hopper; 10, vertical plate; 11, fixed block; 12, connecting rod; 13, connecting plate; 14, support plate; 15, fixed rod; 16, fixed cap; 17, filter screen; 18, valve. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] Please refer to Figure 1-9 , the present utility model provides a technical solution: a dissolving kettle for the production of high-efficiency battery-grade lithium carbonate, including a dissolving reactor 1, a motor 2, a stirring rod 3, a scraper 4, a mixing and adding assembly 5, a feeding cylinder 6, a hollow barrel 7, a feeding pipe 8, a connecting hopper 9, a vertical plate 10, a fixed block 11, a connecting rod 12, a connecting plate 13, a support plate 14, a fixed rod 15, a fixed cap 16, a filter screen 17 and a valve 18.

[0035] When using this dissolving kettle for the production of high-efficiency battery-grade lithium carbonate, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, a motor 2 is fixedly installed in the middle of the upper end of the dissolution reactor 1, and the output end of the motor 2 is fixedly connected to a stirring rod 3. In combination with the setting of the mixing and adding assembly 5, the mixing and adding assembly 5 is arranged at the upper end of the dissolution reactor 1, and the mixing and adding assembly 5 includes feeding cylinders 6 fixedly connected to the left and right sides of the upper end of the dissolution reactor 1, a hollow barrel 7 connected to the lower end of the feeding cylinder 6, and a feeding pipe 8 connected to the hollow barrel 7 through an inclined pipe. The materials for producing battery-grade lithium carbonate are added into the dissolution reactor 1 through the feeding cylinders 6 on both sides. The materials enter the hollow barrel 7 through the inclined pipe connecting the feeding cylinder 6 and the hollow barrel 7 for preliminary mixing, and then enter the feeding pipe 8 through the inclined pipe connecting the hollow barrel 7 and the feeding pipe 8. Moreover, openings are arranged at equal angles at the lower end of the feeding pipe 8, and the materials enter the dissolution reactor 1 through the openings. At the same time, the feeding pipe 8 is above the stirring rod 3. Then, the motor 2 is started, and the motor 2 drives the stirring rod 3 to rotate in the dissolution reactor 1, so as to facilitate the secondary mixing of the materials inside the dissolution reactor 1 and achieve a better mixing effect. At the same time, the upper end of the stirring rod 3 is inserted into the middle of the hollow barrel 7, and the two do not interfere with each other. Moreover, the stirring rod 3 is connected to a scraper 4, and the scraper 4 is attached to the inner side wall of the dissolution reactor 1. The scraper 4 can scrape the aggregate adhering to the inner side wall of the dissolution reactor 1;

[0036] After the materials are mixed and dissolved in the dissolution reactor 1, the valve 18 installed at the lower end of the connecting hopper 9 can be opened. As shown in Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 8 shown, a filter screen 17 is installed in the middle of the connecting hopper 9, and sealing rings are attached between the connecting hopper 9 and the filter screen 17 and between the filter screen 17 and the dissolution reactor 1 to prevent the overall sealing effect. The materials are filtered through the filter screen 17, and the filtered materials are discharged downward through the valve 18. Moreover, after the discharge is completed, the power supply is turned off. The upper end of the connecting hopper 9 is fixedly connected to a vertical plate 10, and the vertical plate 10 is connected to the fixed block 11 in a clamping manner. At this time, by holding the connecting rod 12 and then rotating the fixing cap 16 screwed on the outer surface of the fixed rod 15, the fixing cap 16 is disengaged from the connecting plate 13 and the fixed rod 15, so as to release the limit between the connecting plate 13 and the support plate 14;

[0037] Then, by pulling the connecting plate 13, the connecting plate 13 slides with the connecting rod 12, so that the connecting plate 13 is disengaged from the support plate 14 and the fixed rod 15, thereby releasing the limit between the vertical plate 10 and the support plate 14. Then, the connecting rod 12 is slowly pulled downward, and the connecting rod 12 drives the vertical plate 10 to move downward, so that the vertical plate 10 slides with the fixed block 11, thereby driving the connecting hopper 9 to telescopically move downward, so that the connection between the connecting hopper 9 and the dissolution reactor 1 changes from as shown inFigure 1 The state shown is converted into Figure 6 the state shown, and then the filter screen 17 is taken out from the connecting hopper 9, so as to facilitate the disassembly and cleaning of the filter screen 17, prevent the filter screen 17 from being blocked, and also can fully clean the inside of the dissolution reactor 1 to prevent residues.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dissolving kettle for producing high-efficiency battery-grade lithium carbonate, comprising a dissolving reactor (1), a motor (2) fixedly mounted at the middle of the upper end of the dissolving reactor (1), and a stirring rod (3) fixedly connected to the output end of the motor (2); It is characterized in that Also includes: A mixing and adding component (5), wherein the mixing and adding component (5) is arranged at the upper end of the dissolution reaction kettle (1), and the mixing and adding component (5) is used to add and preliminarily mix the materials; A connecting bucket (9), the connecting bucket (9) being sleeved on the lower end of the dissolution reaction kettle (1), a filter screen (17) being provided in the middle of the connecting bucket (9), and sealing rings being provided between the connecting bucket (9) and the filter screen (17) as well as between the filter screen (17) and the dissolution reaction kettle (1), and a valve (18) being fixedly installed at the lower end of the connecting bucket (9); The upper end of the connecting bucket (9) is fixedly connected to a vertical plate (10), and the vertical plates (10) are arranged at equal angles on the upper end of the connecting bucket (9), and the vertical plates (10) drive the connecting bucket (9) to form a telescopic structure at the lower end of the dissolution reaction kettle (1).

2. A dissolving kettle for producing high-efficiency battery-grade lithium carbonate according to claim 1, characterized in that: A scraper (4) is fixedly connected to one end of the stirring rod (3) close to the inner wall of the dissolution reactor (1), and the scraper (4) is arranged in close contact with the inner wall of the dissolution reactor (1), and a fixing block (11) with a "T"-shaped structure is fixedly connected to the edge of the lower end of the dissolution reactor (1).

3. A dissolving kettle for producing high-efficiency battery-grade lithium carbonate according to claim 2, characterized in that: The fixing blocks (11) and the vertical plates (10) are arranged in a one-to-one correspondence, and the fixing blocks (11) and the vertical plates (10) are connected via a slot.

4. A dissolving kettle for producing high-efficiency battery-grade lithium carbonate according to claim 1, characterized in that: The mixing and adding assembly (5) comprises a feeding cylinder (6) fixedly connected to the left and right sides of the upper end of the dissolution reaction kettle (1), a hollow barrel (7) connected to the lower end of the feeding cylinder (6), and a feeding pipe (8) connected to the hollow barrel (7) via an inclined pipe.

5. A dissolving kettle for producing high-efficiency battery-grade lithium carbonate according to claim 4, characterized in that: The feeding tube (8) is located above the stirring rod (3), and the lower end of the feeding tube (8) is provided with an opening at an equal angle, and the upper end of the stirring rod (3) passes through the middle of the hollow barrel (7), and there is no interference between the stirring rod (3) and the hollow barrel (7).

6. A dissolving kettle for producing high-efficiency battery-grade lithium carbonate according to claim 1, characterized in that: A connecting rod (12) is fixedly connected to the outer side surface of the upper end of the vertical plate (10), a sliding structure is formed between the connecting rod (12) and the connecting plate (13), and the connecting plate (13) and the supporting plate (14) are arranged in a close fit.

7. A dissolving kettle for producing high-efficiency battery-grade lithium carbonate according to claim 6, characterized in that: The connecting plate (13) and the fixing rod (15) are connected by a slot, and the fixing rod (15) is fixedly connected to the upper end of the supporting plate (14), and the supporting plate (14) is fixed to the outer side surface of the upper end of the dissolution reactor (1).

8. A dissolving kettle for producing high-efficiency battery-grade lithium carbonate according to claim 7, characterized in that: The upper end of the fixing rod (15) is threadedly connected to a fixing cap (16), and the fixing cap (16) is snap-connected to the upper end of the connecting plate (13).

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