Centrifugal refining tank for producing battery-grade lithium carbonate

Abstract

The utility model discloses a centrifugal refining tank for producing battery-grade lithium carbonate, which comprises a tank body, a storage hopper with a separation function is fixedly connected to the upper end in the tank body, and a material pumping pipe is connected to the left end of the tank body through a bolt; a stirring structure and an adjusting structure are arranged in the storage hopper and on the lower side of the storage hopper respectively, the stirring structure comprises a first connecting shaft, a first motor, a first stirring rod, a second stirring rod and a third stirring rod, and the adjusting structure comprises a second connecting shaft, a connecting plate, a first bevel gear, a second bevel gear, a third connecting shaft and a second motor. The lower end of the material pumping pipe is in bolted connection with the top end of a collecting box, and the collecting box is placed on the left side of the tank body. According to the centrifugal refining tank for battery-grade lithium carbonate production, coarse lithium carbonate and washing water can make full contact conveniently, automatic discharging is convenient, a mixture is dewatered, meanwhile, refined lithium carbonate is easily taken out, and liquid is prevented from being attached to the inner wall of the tank body.

Description

Technical Field

[0001] The utility model relates to the technical field of battery-grade lithium carbonate production, in particular to a centrifugal refining tank for battery-grade lithium carbonate production. Background Technique

[0002] Battery-grade lithium carbonate is an important raw material for preparing the cathode material of lithium-ion batteries, and can also be used as an electrolyte additive for lithium-ion batteries, which can improve the safety performance and service life of the batteries. It is a key raw material for lithium-ion batteries. A centrifugal refining tank is used in the preparation of battery-grade lithium carbonate. Currently, there are various styles of centrifugal refining tanks for battery-grade lithium carbonate production on the market, which can meet different needs.

[0003] However, for general centrifugal refining tanks for battery-grade lithium carbonate production, it is not convenient for the crude lithium carbonate to come into full contact with the washing water, and it is not convenient to automatically discharge the material to dehydrate the mixture. At the same time, it is not easy to take out the refined lithium carbonate, and the liquid is easy to stick to the inner wall of the tank body. Therefore, we propose a centrifugal refining tank for battery-grade lithium carbonate production to solve the problems raised above. Content of the Utility Model

[0004] The purpose of the utility model is to provide a centrifugal refining tank for battery-grade lithium carbonate production to solve the problems in the existing centrifugal refining tank for battery-grade lithium carbonate production in the above-mentioned background technique, that is, it is not convenient for the crude lithium carbonate to come into full contact with the washing water, it is not convenient to automatically discharge the material to dehydrate the mixture, it is not easy to take out the refined lithium carbonate, and the liquid is easy to stick to the inner wall of the tank body.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A centrifugal refining tank for battery-grade lithium carbonate production, including: a tank body, a storage hopper for separating is fixedly connected to the upper end inside the tank body, and a pumping pipe is bolted to the left end of the tank body;

[0006] It further includes:

[0007] A stirring structure and an adjusting structure are respectively arranged inside and below the storage hopper. The stirring structure includes a first connecting shaft, a first motor, a first stirring rod, a second stirring rod and a third stirring rod. The adjusting structure includes a second connecting shaft, a connecting plate, a first bevel gear, a second bevel gear, a third connecting shaft and a second motor;

[0008] The lower end of the pumping pipe is bolted to the top end of a collection box, and the collection box is placed on the left side of the tank body, and a sealing plate is snap-connected to the front inside of the collection box.

[0009] Preferably, a first connecting shaft is rotatably connected to the center of the top end of the tank body, a first motor is installed at the upper end of the first connecting shaft, a third stirring rod is fixedly connected to the bottom end of the first connecting shaft, and the longitudinal section of the third stirring rod is in a spiral structure.

[0010] Preferably, first stirring rods are embedded and connected to the outer surface of the lower end of the first connecting shaft at equal angles, the inclination angle of the lower end of the first stirring rod is adapted to the inclination angle of the storage hopper, and second stirring rods are fixedly connected to the outer surface of the first connecting shaft at equal intervals. Both the first stirring rod and the second stirring rod are in a rotating structure inside the storage hopper through the first connecting shaft.

[0011] Preferably, a second connecting shaft is rotatably connected to the lower right end of the storage hopper, the lower end of the second connecting shaft is fixedly connected to the right end of the connecting plate, and the diameter of the connecting plate is equal to the diameter of the lower end of the storage hopper;

[0012] Wherein, a first bevel gear is embedded and connected to the middle and lower end of the second connecting shaft, a second bevel gear is meshed and connected to the right end of the first bevel gear, and a third connecting shaft is fixedly connected to the right end of the second bevel gear.

[0013] Preferably, the third connecting shaft is rotatably connected to the right end of the tank body, a second motor is installed at the right end of the third connecting shaft, and the third connecting shaft, the second bevel gear, the first bevel gear, the second connecting shaft and the connecting plate form a linkage structure.

[0014] Preferably, a fourth connecting shaft is rotatably connected to the bottom end of the tank body, a third motor is installed at the lower end of the fourth connecting shaft, and a separation cylinder is fixedly connected to the top end of the fourth connecting shaft;

[0015] Wherein, scraping plates are fixedly connected to the outer surface of the middle end of the fourth connecting shaft at equal angles, and the outer ends of the scraping plates with an "L"-shaped longitudinal section fit with the inner wall of the tank body.

[0016] Preferably, a connecting pipe is bolted to the upper rear end of the collection box, an air extraction pump is installed at the rear end of the connecting pipe, the front end of the connecting pipe is in a mesh structure, and the separation cylinder is communicated with the collection box through a pumping pipe.

[0017] Compared with the prior art, the beneficial effects of the present utility model are: the centrifugal refining tank for the production of battery-grade lithium carbonate facilitates the full contact between the crude lithium carbonate and the washing water, is convenient for automatic feeding to dehydrate the mixture, and is easy to take out the refined lithium carbonate, preventing the liquid from sticking to the inner wall of the tank body;

[0018] 1. There is a first stirring rod and a second stirring rod. The structural design of the first stirring rod and the second stirring rod inside the storage hopper enables the first connecting shaft to drive the first stirring rods arranged at equal angles and the second stirring rods arranged at equal intervals to rotate when it rotates, so that the first stirring rod, the second stirring rod and the third stirring rod stir the materials inside the storage hopper, facilitating the full contact between the crude lithium carbonate and the washing water.

[0019] 2. There is a second connecting shaft and a connecting plate. The structural design of the third connecting shaft and the connecting plate enables the third connecting shaft to drive the second connecting shaft to rotate through the second bevel gear and the first bevel gear when it rotates, so that the second connecting shaft drives the connecting plate to rotate away from the lower end of the storage hopper, allowing the mixture to enter the inside of the separation cylinder, thus facilitating automatic feeding to dehydrate the mixture.

[0020] 3. There is a pumping pipe and a first stirring rod. The structural design of the separation cylinder and the collection box enables the refined lithium carbonate inside the separation cylinder to enter the collection box through the pumping pipe after the gas in the collection box is pumped out. The inclination angle of the lower end of the first stirring rod is adapted to the inclination angle of the storage hopper, so that when the first stirring rod and the scraper rotate, they scrape the inner wall of the tank body, making it easy to take out the refined lithium carbonate and preventing the liquid from sticking to the inner wall of the tank body. Description of the Drawings

[0021] Figure 1 It is a front view sectional structure schematic diagram of the present utility model;

[0022] Figure 2 It is a right side view sectional structure schematic diagram of the connection between the collection box and the sealing plate of the present utility model;

[0023] Figure 3 It is a top view sectional structure schematic diagram of the connection between the tank body and the scraper of the present utility model;

[0024] Figure 4 It is a top view sectional structure schematic diagram of the connection between the first connecting shaft and the second stirring rod of the present utility model;

[0025] Figure 5 It is a structure schematic diagram of the state where the connecting plate is away from the storage hopper of the present utility model.

[0026] In the figure: 1, tank body; 2, storage hopper; 3, first connecting shaft; 4, first motor; 5, first stirring rod; 6, second stirring rod; 7, third stirring rod; 8, second connecting shaft; 9, connecting plate; 10, first bevel gear; 11, second bevel gear; 12, third connecting shaft; 13, second motor; 14, fourth connecting shaft; 15, third motor; 16, separation cylinder; 17, scraper; 18, pumping pipe; 19, collection box; 20, sealing plate; 21, connecting pipe; 22, air extraction pump. Detailed Embodiment

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-5 , the present utility model provides a technical solution: a centrifugal refining tank for the production of battery-grade lithium carbonate, including a tank body 1, a storage hopper 2, a first connecting shaft 3, a first motor 4, a first stirring rod 5, a second stirring rod 6, a third stirring rod 7, a second connecting shaft 8, a connecting plate 9, a first bevel gear 10, a second bevel gear 11, a third connecting shaft 12, a second motor 13, a fourth connecting shaft 14, a third motor 15, a separation cylinder 16, a scraper 17, a pumping pipe 18, a collection box 19, a sealing plate 20, a connecting pipe 21 and an air extraction pump 22. When using this centrifugal refining tank for the production of battery-grade lithium carbonate, as Figure 1 and Figure 4 , the stirring structure includes a first connecting shaft 3, a first motor 4, a first stirring rod 5, a second stirring rod 6 and a third stirring rod 7. Since the longitudinal section of the third stirring rod 7 is in a spiral structure, the lower outer surface of the first connecting shaft 3 is inlaid and connected with the first stirring rod 5 at equal angles, and the outer surface of the first connecting shaft 3 is fixedly connected with the second stirring rod 6 at equal intervals. Both the first stirring rod 5 and the second stirring rod 6 are in a rotating structure inside the storage hopper 2 through the first connecting shaft 3;

[0029] Therefore, the crude lithium carbonate is poured into the upper part inside the tank body 1 through the feed port at the upper left end of the tank body 1. At this time, the connecting plate 9 is located directly below the storage hopper 2, and the connecting plate 9 seals the storage hopper 2. The washing water is added into the storage hopper 2 through the liquid inlet at the upper right end of the tank body 1. When the first motor 4 works, it drives the first connecting shaft 3 to rotate;

[0030] Let the first connecting shaft 3 drive the first stirring rod 5 arranged at equal angles, the second stirring rod 6 arranged at equal intervals and the third stirring rod 7 arranged in a spiral shape to rotate, so that when the first stirring rod 5 arranged at equal angles, the second stirring rod 6 arranged at equal intervals and the third stirring rod 7 arranged in a spiral shape rotate, they stir the crude lithium carbonate and the washing water inside the storage hopper 2, thereby facilitating the full contact between the crude lithium carbonate and the washing water;

[0031] As Figure 1 , Figure 3 and Figure 5, the adjusting structure includes a second connecting shaft 8, a connecting plate 9, a first bevel gear 10, a second bevel gear 11, a third connecting shaft 12 and a second motor 13. Since the diameter of the connecting plate 9 is equal to the lower end diameter of the storage hopper 2, the right end of the first bevel gear 10 is meshed and connected with the second bevel gear 11. The third connecting shaft 12, the second bevel gear 11, the first bevel gear 10, the second connecting shaft 8 and the connecting plate 9 form a linkage structure;

[0032] Therefore, after the washing of the crude lithium carbonate is completed, the second motor 13 is operated to drive the third connecting shaft 12 to rotate on the tank body 1. When the third connecting shaft 12 rotates, it drives the second bevel gear 11 to rotate. When the second bevel gear 11 rotates, it meshes with the first bevel gear 10 to drive the second connecting shaft 8 to rotate. When the second connecting shaft 8 rotates, it drives the connecting plate 9 to rotate, so that the connecting plate 9 rotates away from the lower end of the storage hopper 2, and the mixture inside the storage hopper 2 falls into the inside of the separation cylinder 16 through the lower end of the storage hopper 2;

[0033] When the third motor 15 operates, it drives the fourth connecting shaft 14 to rotate, and the fourth connecting shaft 14 drives the separation cylinder 16 to rotate. When the separation cylinder 16 rotates, the liquid inside it is discharged through the porous structures on the side wall and bottom end of the second stirring rod 6, and the refined lithium carbonate is left inside the separation cylinder 16, thus facilitating automatic feeding to dehydrate the mixture;

[0034] Such as Figure 1 , Figure 2 , Figure 3 and Figure 4 , since the front end of the connecting pipe 21 is a mesh-like structure, and the separation cylinder 16 is connected to the collection box 19 through the pumping pipe 18. The outer surface of the middle part of the fourth connecting shaft 14 is fixedly connected with a scraper 17 at equal angles. The outer end of the scraper 17 with an "L"-shaped longitudinal section fits with the inner wall of the tank body 1. The inclination angle of the lower end of the first stirring rod 5 is adapted to the inclination angle of the storage hopper 2;

[0035] Therefore, after separation, the liquid at the lower end inside the tank body 1 is discharged through the drain pipe at the lower right end of the tank body 1. The sealing plate 20 is snap-connected to the front end inside the collection box 19. When the air pump 22 operates, it pumps out the gas inside the collection box 19 through the connecting pipe 21, so that the refined lithium carbonate inside the separation cylinder 16 enters the inside of the collection box 19 through the pumping pipe 18 for collection. The mesh-like structure at the front end of the connecting pipe 21 can prevent the refined lithium carbonate from entering the inside of the air pump 22;

[0036] When the fourth connecting shaft 14 rotates, it drives the scraper 17 arranged at equal angles to rotate. When the scraper 17 rotates, its outer end contacts the inner wall of the tank body 1, scraping off the water stains on the inner wall of the tank body 1. When the first connecting shaft 3 rotates, it drives the first stirring rod 5 to rotate. When the first stirring rod 5 arranged at equal angles rotates, its outer wall contacts the inner wall of the tank body 1, scraping off the liquid. Thus, it is easy to take out the refined lithium carbonate and prevent the liquid from sticking to the inner wall of the tank body 1. All the electrical components mentioned above are of the prior art and will not be elaborated here.

[0037] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt the conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, they will not be elaborated here.

[0038] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A centrifugal refining tank for the production of battery-grade lithium carbonate, comprising: The tank body (1), a storage hopper (2) for separation is fixedly connected to the upper end inside the tank body (1), and a material extraction pipe (18) is bolted to the left end of the tank body (1); It is characterized in that it further includes: A stirring structure and an adjusting structure are respectively arranged inside and below the storage hopper (2). The stirring structure includes a first connecting shaft (3), a first motor (4), a first stirring rod (5), a second stirring rod (6) and a third stirring rod (7). The adjusting structure includes a second connecting shaft (8), a connecting plate (9), a first bevel gear (10), a second bevel gear (11), a third connecting shaft (12) and a second motor (13); The lower end of the material extraction pipe (18) is bolted to the top end of the collection box (19), and the collection box (19) is placed on the left side of the tank body (1), and a sealing plate (20) is snap-connected inside the front end of the collection box (19).

2. The centrifugal refining tank for producing battery-grade lithium carbonate according to claim 1, characterized in that: The first connecting shaft (3) is rotatably connected to the center of the top end of the tank body (1), the first motor (4) is installed at the upper end of the first connecting shaft (3), the third stirring rod (7) is fixedly connected to the bottom end of the first connecting shaft (3), and the longitudinal section of the third stirring rod (7) is in a spiral structure.

3. The centrifugal refining tank for producing battery-grade lithium carbonate according to claim 2, characterized in that: The lower outer surface of the first connecting shaft (3) is inlaid with the first stirring rods (5) at equal angles, and the inclination angle of the lower end of the first stirring rod (5) is adapted to the inclination angle of the storage hopper (2). The second stirring rods (6) are fixedly connected to the outer surface of the first connecting shaft (3) at equal intervals. Both the first stirring rod (5) and the second stirring rod (6) are in a rotating structure inside the storage hopper (2) through the first connecting shaft (3).

4. A centrifugal refining tank for the production of battery-grade lithium carbonate according to claim 1, characterized in that: The right lower end of the storage hopper (2) is rotatably connected to the second connecting shaft (8), the lower end of the second connecting shaft (8) is fixedly connected to the right end of the connecting plate (9), and the diameter of the connecting plate (9) is equal to the diameter of the lower end of the storage hopper (2); Among them, the first bevel gear (10) is inlaid at the middle and lower end of the second connecting shaft (8), the first bevel gear (10) is meshed with the second bevel gear (11) at the right end, and the second bevel gear (11) is fixedly connected to the third connecting shaft (12) at the right end.

5. A centrifugal refining tank for the production of battery-grade lithium carbonate according to claim 4, characterized in that: The third connecting shaft (12) is rotatably connected to the right end of the tank body (1), the second motor (13) is installed at the right end of the third connecting shaft (12), and the third connecting shaft (12), the second bevel gear (11), the first bevel gear (10), the second connecting shaft (8) and the connecting plate (9) form a linkage structure.

6. The centrifugal refining tank for producing battery-grade lithium carbonate according to claim 1, wherein: The bottom end of the tank body (1) is rotatably connected to the fourth connecting shaft (14), the third motor (15) is installed at the lower end of the fourth connecting shaft (14), and the separation cylinder (16) is fixedly connected to the top end of the fourth connecting shaft (14); Among them, the outer surface of the middle end of the fourth connecting shaft (14) is fixedly connected with the scraping plates (17) at equal angles, and the outer ends of the scraping plates (17) with an "L"-shaped longitudinal section fit with the inner wall of the tank body (1).

7. A centrifugal refining tank for producing battery-grade lithium carbonate according to claim 1, characterized in that: The rear upper end of the collection box (19) is bolted with a connecting pipe (21), and an air extraction pump (22) is installed at the rear end of the connecting pipe (21). Moreover, the front end of the connecting pipe (21) is a mesh structure, and the separation cylinder (16) is communicated with the collection box (19) through a material extraction pipe (18).

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