Lithium precipitation reaction kettle capable of achieving uniform distribution

Abstract

The utility model discloses a kind of implement even material's lithium precipitation reaction kettle, the lithium precipitation reaction kettle includes reaction kettle body and is located in the reaction kettle body, the stirring assembly that can be raised and lowered;Stirring assembly includes driving motor, and hollow stirring shaft is connected with driving motor and is equipped with pressure sensor on it, the top of hollow stirring shaft is connected with brine feed pipe, and the distribution round pipe is connected with being equipped with on hollow stirring shaft by communicating pipe, and the distribution round pipe is evenly distributed and is equipped with several distribution holes;The lithium precipitation reaction kettle further includes support frame for fixing driving motor, and the other end of the support frame is connected telescopic device, to realize the up and down of stirring assembly by telescopic device.This lithium precipitation reaction kettle evenly distributes material to make lithium precipitation reaction evenly and fully carried out;Meanwhile, distribution hole can be avoided and is blocked due to the pressure of reaction solution is too large, and the adjustment of blade up and down angle can be realized in linkage.

Description

Technical Field

[0001] This utility model belongs to the technical field of lithium deposition reactors, and particularly relates to a lithium deposition reactor that achieves uniform material distribution. Background Technology

[0002] Lithium carbonate, as a fundamental raw material for cathode and electrolyte materials in lithium-ion batteries, has a complex and demanding preparation process. In the lithium carbonate production process, the lithium precipitation step is crucial, and the lithium precipitation reactor is the core equipment in this step. Optimizing its material distribution technology is a key step in improving reaction efficiency and product quality.

[0003] Currently, traditional lithium carbonate deposition reactors suffer from numerous problems during material distribution, such as uneven distribution of brine and alkali, leading to incomplete reactions and impacting lithium carbonate production efficiency and product quality. Furthermore, existing stirring devices cannot effectively coordinate with the material distribution device. On one hand, it's difficult to flexibly adjust the material distribution position according to the reaction progress, failing to meet the demands of refined production; on the other hand, it doesn't ensure thorough mixing of the two solutions within the reactor, further reducing reaction efficiency.

[0004] Therefore, there is an urgent need for a lithium deposition reactor that can achieve uniform material distribution and flexibly adjust the material distribution position. Utility Model Content

[0005] Purpose of the utility model: The technical problem to be solved by this utility model is to provide a lithium deposition reactor that can achieve uniform material distribution and flexible adjustment of the position.

[0006] Technical solution: The present invention realizes a lithium deposition reactor with uniform material distribution. The lithium deposition reactor includes a reactor body and a stirring component that is located inside the reactor body and can be raised and lowered. The stirring assembly includes a drive motor, a hollow stirring shaft connected to the drive motor and equipped with a pressure sensor, the hollow stirring shaft being rotatably connected to the bottom of the feeding box via a bearing, and a brine feeding pipe being connected to the top of the feeding box; a feeding tube is connected to the hollow stirring shaft via a connecting pipe, and a plurality of feeding holes are evenly distributed on the feeding tube. The lithium deposition reactor also includes a support frame for fixing the drive motor. The other end of the support frame is connected to a telescopic device. There are two sets of support frames and telescopic devices, which are fixedly connected to the drive motor and the feed box, respectively. The telescopic device is an electric telescopic rod with its output end facing downward and fixedly connected to the support frame, so as to realize the up and down movement of the stirring assembly by means of the telescopic device.

[0007] The pressure sensor for the lithium deposition reactor is located at the lower end of the feeding tube.

[0008] The output shaft of the drive motor of the lithium deposition reactor faces downward and is fixedly fitted with a drive gear. A driven gear that meshes with the drive gear is fixedly fitted on the hollow stirring shaft. The drive motor drives the drive and driven gears to rotate, thereby realizing the rotation of the hollow stirring shaft.

[0009] The hollow stirring shaft of the lithium deposition reactor is connected to an angle-adjustable blade assembly at its bottom end. The blade assembly includes an electric telescopic rod fixedly installed inside the hollow stirring shaft. A rack is fixedly installed at the output end of the electric telescopic rod. One side of the rack is meshed with a second driving gear. The lower end of the second driving gear is sequentially connected to a second driven gear and a first half gear rod. One side of the first half gear rod is meshed with a second half gear rod. Stirring blades are respectively connected to the first half gear rod and the second half gear rod. The other end of the stirring blades extends to the outside of the hollow stirring shaft, so that the electric telescopic rod can raise and lower, driving the rack to raise and lower, thereby realizing the gear set transmission motion to drive the stirring blades to synchronously adjust their angle upward or downward. The second driving gear, the second driven gear, the first half gear rod, and the second half gear rod are all rotatably connected inside the hollow stirring shaft.

[0010] The lithium precipitation reactor has an alkali feed pipe at the top and an outlet at the bottom, which is equipped with a valve.

[0011] The outer wall of the lithium deposition reactor is equipped with a heating coil, with one end of the heating coil being the inlet and the other end being the outlet.

[0012] Beneficial effects: Compared with the prior art, the advantages of this utility model are as follows: This lithium precipitation reactor, by setting a hollow stirring shaft and a feeding tube with feeding holes, can achieve continuous and uniform feeding of brine for reaction, achieving integration of stirring and feeding, so that the lithium precipitation reaction proceeds evenly and fully; at the same time, a sensor is set on the hollow stirring shaft, and a telescopic device and an angle-adjustable blade assembly are set on the stirring assembly to monitor the pressure of the reaction liquid and adjust the feeding position of the feeding tube, so as to avoid the feeding holes being blocked due to excessive pressure of the reaction liquid, which would affect the lithium precipitation reaction; and according to the adjustment of the feeding position of the feeding tube, the up and down angle of the blades are adjusted in conjunction, which improves the fullness of stirring while avoiding the interference of the up and down position adjustment on the rotation of the stirring blades. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the lithium precipitation reactor of this utility model; Figure 2 This is a schematic diagram of the blade assembly of this utility model. Detailed Implementation

[0014] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings.

[0015] It should be noted that the electric telescopic rod used in this utility model is a known component in the field. The specific power and model selection should be based on the actual reaction vessel body and stirring assembly. This utility model does not impose any specific limitations.

[0016] This utility model's lithium precipitation reactor is based on an alkaline solution (sodium carbonate solution), where brine is added uniformly and continuously to allow the sodium carbonate to react with the lithium sulfate in the brine to produce lithium carbonate. Specifically, as shown... Figure 1 As shown, the lithium precipitation reactor includes a reactor body 1 with an alkali feed pipe 21 at the top and a discharge port 22 at the bottom, with a valve at the discharge port 22. The reactor body 1 contains a stirring assembly, the height of which is adjustable to control the distribution of the brine. A spiral heating coil 23 is mounted on the outer wall of the reactor body 1, with one end being the inlet and the other the outlet, both located at the top, with the inlet lower than the outlet. The spiral heating coil 23 surrounds the reactor, and the high-low design of the steam inlet and outlet creates natural convection circulation, improving heat exchange efficiency while preventing localized overheating.

[0017] The mixing assembly includes a hollow mixing shaft 4 and a drive motor 2 that drives the hollow mixing shaft 4 to rotate. The output end of the drive motor 2 is positioned downwards, and a driving gear 11 is fixedly sleeved on the output end of the drive motor 2. A driven gear 12 is fixedly sleeved on the hollow mixing shaft 4, and the driven gear 12 meshes with the driving gear 11. When the drive motor 2 starts, it drives the driving gear 11 to rotate, which in turn drives the driven gear 12 to rotate. The rotation of the driven gear 12 then drives the hollow mixing shaft 4 to rotate, thereby achieving the mixing operation.

[0018] The hollow stirring shaft 4 can be rotatably connected to the bottom of the feed box 13 via a bearing (not shown in the figure), such as... Figure 2 As shown, the brine feed pipe 5 is connected to the feed box 13 for feeding. The drive motor 2 of the stirring assembly is supported and fixed by the support frame 9, and when the feed box 13 is used for feeding, the feed box 13 can also be fixedly connected to the support frame 9. In order to realize the vertical height adjustment of the stirring assembly, a telescopic device 10 can be set at the other end of the support frame 9, preferably an electric telescopic rod. The output end of the electric telescopic rod is fixedly connected to the support frame 9, that is, the telescopic end of the electric telescopic rod is fixedly connected to the support frame 9, so that the vertical height adjustment of the support frame 9 can be realized during the telescopic extension and retraction of the electric telescopic rod, thereby driving the vertical height adjustment of the stirring assembly. When the feed box 13 is used for feeding, in order to further improve the stability of the height adjustment, two sets of support frames 9 and two sets of telescopic devices 10 can be set. One set of support frames 9 and telescopic devices 10 is fixedly connected to the drive motor 2, and one set of telescopic devices 10 and support frames 9 is fixedly connected to the feed box 13.

[0019] The hollow stirring shaft 4 is connected to the feeding tube 7 via several connecting pipes 6. The feeding tube 7 has several feeding holes 8 circumferentially arranged on its shaft. Preferably, there are three connecting pipes 6 evenly arranged circumferentially around the hollow stirring shaft 4. A baffle plate is provided inside the hollow stirring shaft 4 at the lower end of the connecting pipes 6, ensuring that the brine can only flow out from inside the feeding tube 7. After the brine is fed through the brine inlet pipe 5, it enters the feeding tube 7 via the hollow stirring shaft 4 and connecting pipes 6, and then flows out evenly around the feeding holes 8. Simultaneously, under the stirring of the hollow stirring shaft 4, a complete reaction is achieved.

[0020] The lower end of the hollow stirring shaft 4 is equipped with a blade assembly 24 that allows for simultaneous upward or downward angle adjustment of the stirring blades 20; this blade assembly is also existing technology. The hollow stirring shaft 4, also located at the lower end of the baffle plate, still has a hollow chamber for housing the drive assembly of the blade assembly. Specifically, as... Figure 2 As shown, the blade assembly includes a telescopic device fixedly installed inside the hollow stirring shaft 4, preferably an electric telescopic rod 14. The output end of the electric telescopic rod 14 is arranged downwards, and a rack 15 is fixedly provided at the output end. One side of the rack 15 (with the rack 15 as the rack 14) Figure 2 The second driving gear 16 is positioned on the left side, meshing with the rack 15. The lower end of the second driving gear 16 meshes with the second driven gear 17, and the driven gear 17 does not interfere with the rack 15. The driven gear 17 meshes with the first half-gear rod 18, and the right end of the first half-gear rod 18 meshes with the second half-gear rod 19. Stirring blades 20 are connected to the first half-gear rod 18 and the second half-gear rod 19, respectively, extending to the outside of the hollow stirring shaft 4. The second driving gear 16, the second driven gear 17, the first half-gear rod 18, and the first half-gear rod 19 are all rotatably connected within the hollow stirring shaft 4. It should be noted that, in this design, the stirring blades 20 are not affected by the inner wall of the reactor body or the interior of the hollow rotating shaft during lifting, lowering, and angle adjustment.

[0021] When it is necessary to adjust the angle between the stirring blade 20 and the hollow stirring shaft 4, the electric telescopic rod 14 is activated to retract the feed amount, which drives the rack 15 to move upward. The rack 15 meshes with the second drive gear 16, and as it moves along the rack 15, it drives the second drive gear 16 to rotate counterclockwise. The second driven gear 17 meshes upward with the second drive gear 16 and downward with the first half-gear rod 18. When the second drive gear 16 rotates, the second driven gear 17 rotates clockwise. The first half-gear rod 18 drives the second half-gear rod 19 to rotate, thus simultaneously causing the stirring blade 20 to rotate counterclockwise. This causes the stirring blade 20 to flip downward, reducing the angle between the stirring blade 20 and the hollow stirring shaft 4. Conversely, when the electric telescopic rod 14 is activated to extend the feed amount, the stirring blade 20 flips upward, increasing the angle between the stirring blade 20 and the hollow stirring shaft 4.

[0022] The pressure sensor 3, mounted on the hollow stirring shaft 4, can be positioned at the lower end of the hollow stirring shaft 4, or at the upper or lower end of the material distribution tube 7. Preferably, it is positioned at the lower end of the material distribution tube 7. By setting different positions, a preset threshold for the pressure sensor 3 is established. When the position exceeds the preset threshold, the position of the stirring assembly can be adjusted upwards by controlling the telescopic device 10 of the stirring assembly. Simultaneously, the angle of the stirring blade 20 can be adjusted by controlling the electric telescopic rod 14 of the blade assembly. Specific adjustments can be made manually or automatically using a simple PLC control system, as is well known in the art. Furthermore, the adjusted angle or specific height can be determined according to actual production conditions; this invention does not impose detailed limitations.

Claims

1. A lithium deposition reactor for achieving uniform material distribution, characterized in that, The lithium deposition reactor includes a reactor body (1) and a stirring assembly that is located inside the reactor body (1) and can be raised and lowered. The stirring assembly includes a drive motor (2), a hollow stirring shaft (4) connected to the drive motor (2) and equipped with a pressure sensor (3), the hollow stirring shaft (4) being rotatably connected to the bottom of the feed box (13) via a bearing, and the brine feed pipe (5) being connected to the top of the feed box (13); a feeding pipe (7) is connected to the hollow stirring shaft (4) via a connecting pipe (6), and a plurality of feeding holes (8) are evenly distributed on the feeding pipe (7); The lithium deposition reactor also includes a support frame (9) for fixing the drive motor (2). The other end of the support frame (9) is connected to a telescopic device (10). There are two sets of support frames (9) and telescopic devices (10), which are fixedly connected to the drive motor (2) and the feed box (13) respectively. The telescopic device (10) is an electric telescopic rod with its output end facing down and its output end connected and fixed to the support frame (9) so as to realize the up and down lifting of the stirring assembly by means of the telescopic device (10).

2. The lithium deposition reactor for achieving uniform material distribution according to claim 1, characterized in that, The pressure sensor (3) is located at the lower end of the fabric tube (7).

3. The lithium deposition reactor for achieving uniform material distribution according to claim 1, characterized in that, The output shaft of the drive motor (2) faces downward and is fixedly fitted with a drive gear (11). A driven gear (12) that meshes with the drive gear (11) is fixedly fitted on the hollow stirring shaft (4). The drive motor (2) drives the drive gear to rotate so as to realize the rotation of the hollow stirring shaft (4).

4. The lithium deposition reactor for achieving uniform material distribution according to claim 1, characterized in that, The bottom end of the hollow stirring shaft (4) is connected to an angle-adjustable blade assembly (24). The blade assembly includes an electric telescopic rod (14) fixedly installed inside the hollow stirring shaft (4). The output end of the electric telescopic rod (14) is fixedly provided with a rack (15). One side of the rack (15) is meshed with a second driving gear (16). The lower end of the second driving gear (16) is sequentially connected to a second driven gear (17) and a first half gear rod (18). One side of the first half gear rod (18) is meshed with a second half gear rod (19). Stirring blades (20) are respectively connected to the first half gear rod (18) and the second half gear rod (19). The other end of the stirring blade (20) extends to the outside of the hollow stirring shaft (4) so ​​that the electric telescopic rod (14) can lift and lower the rack (15) to realize the synchronous upward or downward angle adjustment of the stirring blade (20) by the gear set transmission motion. The second driving gear (16), the second driven gear (17), the first half gear rod (18) and the second half gear rod (19) are all rotatably connected inside the hollow stirring shaft (4).

5. The lithium deposition reactor for achieving uniform material distribution according to claim 1, characterized in that, The reactor body (1) is provided with an alkaline feed pipe (21) at the top and a discharge port (22) at the bottom, with a valve at the discharge port (22).

6. The lithium deposition reactor for achieving uniform material distribution according to claim 1, characterized in that, The outer wall of the reactor body (1) is provided with a heating coil (23), one end of which is the inlet and the other end is the outlet.

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