Integrated equipment for continuously dissolving lithium hydroxide and adsorbing impurities

Abstract

The utility model relates to the technical field of integrated equipment, in particular to lithium hydroxide continuous dissolution and impurity adsorption integrated equipment. According to the utility model, the forward rotation stirring rod is matched with the reverse rotation magnetic strip plate, and the forward rotation stirring rod rapidly crushes lithium hydroxide agglomerated particles through strong shearing force generated by high-speed rotation, so that non-uniform local concentration is eliminated, and undissolved particles are prevented from entering a subsequent process to cause impurity enrichment; the reverse magnetic strip plate forms an alternating vortex through reverse rotation, so that single flow field limitation is broken, the turbulence mixing effect is enhanced, a dissolving dead zone is reduced, the solution uniformity is improved, and meanwhile, the reverse shearing action of the two can drive the magnetic adsorbent to dynamically diffuse and efficiently capture free magnetic impurities; and the combination of the non-magnetic impurities and the adsorbent is enhanced through the high-energy micro-region, so that the synergistic removal of multiple types of impurities is realized, and the production continuity and the product purity are remarkably improved while the dependency of chemical agents is reduced.

Description

Technical Field

[0001] This utility model relates to the field of integrated equipment technology, specifically an integrated equipment for continuous dissolution of lithium hydroxide and adsorption of impurities. Background Technology

[0002] With the rapid development of the new energy industry, the demand for efficient utilization of lithium resources and high-purity lithium salt products has increased dramatically. Lithium hydroxide, as a core raw material for lithium battery cathode materials, has seen its dissolution process's continuity and purity control become key factors restricting production efficiency and product quality. In traditional processes, lithium hydroxide dissolution and impurity removal are carried out in separate steps.

[0003] In the prior art, a device for purifying, removing impurities, and demagnetizing process liquids includes a plate and frame filter press, a tubular precision filter, a permanent magnet liquid magnetic filter, a 0.1μm membrane filter, and an evaporator connected in series along the same pipeline. Several tubular precision filters are provided and connected in series, and the pore size of the tubular filters decreases sequentially from 0.5μm to 0.2μm.

[0004] The current production method uses a plate and frame filter press with a filter cloth of about 38μm to filter liquid materials. However, impurities smaller than 38μm still remain in the liquid after filtration. During subsequent evaporation and concentration, these impurities accumulate, eventually causing the chemical and physical indicators of the product to exceed standards, especially for calcium and magnetic substances. Current technology reduces the pore size of the tubular filter cartridges by decreasing the pore size from large to small to reduce the adsorption of solid impurities on each filter cartridge, ensuring filtration speed and quality. However, current technology relies solely on a plate and frame filter press connected in series with multi-stage tubular precision filters. While this gradually reduces pore size and filter cartridge clogging, it cannot completely remove ultrafine particles and dissolved impurities from the solution. These residual impurities continue to accumulate during subsequent evaporation and concentration, leading to excessive chemical and physical indicators in the product, necessitating improvement. Utility Model Content

[0005] The purpose of this invention is to provide an integrated device for continuous dissolution of lithium hydroxide and adsorption of impurities, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an integrated device for continuous dissolution of lithium hydroxide and adsorption of impurities, comprising;

[0007] The cylindrical body is connected to the bottom of the top cover;

[0008] The top cover is bolted to the cylinder body;

[0009] The feed inlet is located at the top of the top cover and communicates with the inside of the top cover;

[0010] An outlet is arranged on the top of the barrel and connected with the inside of the barrel;

[0011] A stirring rod is arranged in the inside of the barrel;

[0012] A magnetic strip plate is arranged in the inside of the barrel on the side away from the top cover;

[0013] A stirring assembly is arranged on the side of the barrel and drives the stirring rod to stir the inside of the barrel;

[0014] An adsorption assembly is arranged between the stirring assembly and the magnetic strip plate, which drives the magnetic strip plate to rotate and scrape the inner wall of the barrel through the stirring assembly.

[0015] As a further preferred embodiment of the present technical solution, the stirring assembly comprises a connecting frame arranged on the right outer wall of the barrel, the right surface of the connecting frame is fixedly connected with a motor, and the inner wall of the barrel is provided with a fixed frame.

[0016] As a further preferred embodiment of the present technical solution, the output end of the motor penetrates the barrel and is fixedly connected with a first bevel gear, and the first bevel gear rotates in the fixed frame, and the top end of the fixed frame is provided with a bearing.

[0017] As a further preferred embodiment of the present technical solution, the bearing is fixedly connected with a connecting rod, the outer wall of the connecting rod is fixedly connected with four groups of stirring rods at equal intervals, the surface of the connecting rod is fixedly connected with a second bevel gear, and the first bevel gear is engaged with the second bevel gear.

[0018] As a further preferred embodiment of the present technical solution, the adsorption assembly comprises a third bevel gear sleeved on the connecting rod, two groups of limiting rings are fixedly connected on the surface of the third bevel gear at the upper and lower ends of the fixed frame in a symmetrical manner, the surfaces of the two groups of limiting rings are attached to the outer wall of the fixed frame, the third bevel gear is engaged with the first bevel gear and rotates on the connecting rod.

[0019] As a further preferred embodiment of the present technical solution, four groups of connecting plates are fixedly connected on the outer wall of the third bevel gear below the limiting ring at equal intervals, the outer end surface of each of the four groups of connecting plates is fixedly connected with a threaded rod, and each of the four groups of threaded rods is slidingly connected with a magnetic strip plate.

[0020] As a further preferred embodiment of the present technical solution, a self-locking nut is threadedly connected on each of the four groups of threaded rods, and a limiting groove is formed in the outer wall of the corresponding magnetic strip plate at the inner end of each of the four groups of self-locking nuts.

[0021] As a further preferred embodiment of the present technical solution, the stirring rod and the magnetic strip plate are designed in a staggered manner, the stirring rod is located at the middle position of the barrel, and the magnetic strip plate is located at the outer circle of the stirring rod.

[0022] The utility model provides a kind of lithium hydroxide continuous dissolution and impurity adsorption integrated equipment, with following beneficial effects:

[0023] The utility model discloses a motor drives first bevel gear to rotate, first bevel gear drives second bevel gear and third bevel gear to rotate in opposite directions, second bevel gear drives stirring rod to be positive and negative, third bevel gear drives magnetic stripe plate to reverse on connecting rod, and the cooperation of positive rotation stirring rod and reverse magnetic stripe plate, the strong shear force generated by high-speed rotation of positive rotation stirring rod, fast crushing lithium hydroxide agglomerate particle, eliminate local concentration unevenness, avoid undissolved particle into subsequent process to cause impurity enrichment, reverse magnetic stripe plate is formed by reverse rotation alternating vortex, break single flow field restriction, enhance turbulent mixing effect, reduce dissolution dead zone, improve solution uniformity, meanwhile, the reverse shear effect of both can drive magnetic adsorbent dynamic diffusion, efficiently capture free magnetic impurity, and the combination of high-energy micro area is strengthened to non-magnetic impurity and adsorbent, realize multiple type impurity collaborative removal, reduce chemical reagent dependency simultaneously, significantly improve production continuity and product purity. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is the stereoscopic sectional structure view of adsorption subassembly and stirring subassembly of the utility model;

[0026] Figure 3 It is the stereoscopic structure schematic diagram of adsorption subassembly and stirring subassembly of the utility model;

[0027] Figure 4 It is the utility model Figure 2 It is the enlarged view of A in the utility model;

[0028] Figure 5 It is the enlarged view of B in the utility model. Figure 2

[0029] In the drawing: 1, cylinder;2, top cover;3, feed inlet;4, discharge port;5, stirring rod;6, magnetic stripe plate;7, stirring subassembly;71, connecting frame;72, motor;73, first bevel gear;74, fixed frame;75, bearing;76, connecting rod;77, second bevel gear;8, adsorption subassembly;81, third bevel gear;82, limit ring;83, connecting plate;84, threaded rod;85, self-locking nut;86, limit groove. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the embodiments of the utility model. ​

[0031] The utility model provides technical scheme: such as Figures 1 to 5 As shown in the figure, in the embodiment, a lithium hydroxide continuous dissolving and impurity adsorbing integrated equipment, including cylinder 1, top cover 2, feed inlet 3, discharge gate 4, stirring rod 5, magnetic strip plate 6, stirring assembly 7 and adsorption assembly 8 etc. parts, cylinder 1 is connected with the bottom of top cover 2, and top cover 2 is connected with cylinder 1 through bolt, feed inlet 3 is set at the top of top cover 2 and is connected with the inside of top cover 2, discharge gate 4 is set at the top of cylinder 1 and is connected with the inside of cylinder 1, stirring rod 5 is set in the inside of cylinder 1, magnetic strip plate 6 is set in the inside of cylinder 1 on the side away from top cover 2, stirring assembly 7 is set in the side of cylinder 1 and drives stirring rod 5 to stir the inside of cylinder 1, and adsorption assembly 8 is set between stirring assembly 7 and magnetic strip plate 6, and adsorption assembly 8 rotates magnetic strip plate 6 through stirring assembly 7 and carries out scraping operation to the inner wall of cylinder 1.

[0032] Among them, stirring assembly 7 includes the connecting frame 71 being set on the right outer wall of cylinder 1, the right surface of connecting frame 71 is fixedly connected with motor 72, the inner wall of cylinder 1 is provided with fixed frame 74, the output end of motor 72 penetrates cylinder 1 and is fixedly connected with first bevel gear 73, and first bevel gear 73 rotates in fixed frame 74, the top of fixed frame 74 is provided with bearing 75, bearing 75 is fixedly connected with connecting rod 76 on the surface, the outer wall of connecting rod 76 is fixedly connected with four groups of stirring rod 5 at equal intervals, the surface of connecting rod 76 is fixedly connected with second bevel gear 77, and first bevel gear 73 is engaged with second bevel gear 77.

[0033] Through motor 72 drive first bevel gear 73 rotates in fixed frame 74, and make fixed frame 74 act on second bevel gear 77 and third bevel gear 81, make connecting rod 76 drive second bevel gear 77 through bearing 75 and carry out normal rotation, and through connecting rod 76 synchronous drive four groups of stirring rod 5 and rotate, make stirring rod 5 produce high-speed rotation and produce strong shear force, quickly break lithium hydroxide agglomerate particles, eliminate local concentration unevenness, avoid undissolved particles into subsequent process and cause impurity enrichment.

[0034] Further, adsorption assembly 8 includes third bevel gear 81 being set on connecting rod 76, two groups of limit rings 82 are fixedly connected on the surface of third bevel gear 81 on the upper and lower ends of fixed frame 74, the surface of two groups of limit rings 82 is all attached with the outer wall of fixed frame 74, third bevel gear 81 is engaged with first bevel gear 73 and rotates on connecting rod 76, four groups of connecting plates 83 are fixedly connected on the outer wall of third bevel gear 81 below limit ring 82 at equal intervals, the outer end surface of four groups of connecting plates 83 is all fixedly connected with threaded rod 84, four groups of threaded rods 84 are all slidably connected with magnetic strip plate 6, four groups of threaded rods 84 are all screw-connected with self-locking nut 85, and the inner end of four groups of self-locking nuts 85 corresponds the outer wall of magnetic strip plate 6 and is all provided with limit groove 86.

[0035] When the first bevel gear 73 drives the second bevel gear 77 to rotate, the first bevel gear 73 simultaneously acts on the third bevel gear 81, so that the third bevel gear 81 drives the limiting ring 82 to reverse on the fixed frame 74, then the magnetic strip plate 6 is slid on the threaded rod 84, and the self-locking nut 85 is screwed on the threaded rod 84, so that the self-locking nut 85 is screwed on the threaded rod 84 and is screwed into the limiting groove 86, thereby achieving the purpose of fixing the magnetic strip plate 6 on the connecting plate 83, then the limiting ring 82 synchronously drives the connecting plate 83 to reverse, so that the magnetic strip plate 6 adsorbs the metal impurities in the cylinder 1, after the adsorption is completed, the self-locking nut 85 is screwed out of the threaded rod 84, and the magnetic strip plate 6 can be disassembled.

[0036] Further, the stirring rod 5 and the magnetic strip plate 6 are designed in a staggered manner, the stirring rod 5 is located at the middle position of the cylinder 1, and the magnetic strip plate 6 is located at the outer circle of the stirring rod 5, through the cooperative design of the forward rotation of the stirring rod 5 and the reverse rotation of the magnetic strip plate 6, through dynamic shear dissolution and magnetic-flow coupling adsorption, the dissolution efficiency is improved and the synchronous removal of multiple types of impurities is realized.

[0037] The utility model provides a lithium hydroxide continuous dissolution and impurity adsorption integrated equipment, specific working principle is as follows: when cylinder 1 is at work, first through starting motor 72, make motor 72 drive first bevel gear 73 rotate in fixed frame 74, and make fixed frame 74 act on second bevel gear 77 and third bevel gear 81, make connecting rod 76 drive second bevel gear 77 to rotate forward through bearing 75, and drive four groups stirring rod 5 to rotate through connecting rod 76, make stirring rod 5 produce high -speed rotation and produce strong shear force of the particle, the agglomeration of lithium hydroxide is broken rapidly, and then the magnetic strip plate 6 is slid on the threaded rod 84, and the self-locking nut 85 is screwed on the threaded rod 84, so that the self-locking nut 85 is screwed on the threaded rod 84 and is screwed into the limiting groove 86, thereby achieving the purpose of fixing the magnetic strip plate 6 on the connecting plate 83, when the first bevel gear 73 drives the second bevel gear 77 to rotate, the first bevel gear 73 simultaneously acts on the third bevel gear 81, so that the third bevel gear 81 drives the limiting ring 82 to reverse on the fixed frame 74, then the limiting ring 82 synchronously drives the connecting plate 83 to reverse, so that the magnetic strip plate 6 adsorbs the metal impurities in the cylinder 1.

[0038] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated device for continuous dissolution of lithium hydroxide and adsorption of impurities, characterized in that: include; The cylinder (1) is connected to the bottom of the top cover (2); The top cover (2) is bolted to the cylinder (1); The feed inlet (3) is located on the top of the top cover (2) and is connected to the inside of the top cover (2); The discharge port (4) is located at the top of the cylinder (1) and is connected to the inside of the cylinder (1); A stirring rod (5) is disposed inside the cylinder (1); A magnetic strip (6) is disposed inside the cylinder (1) on the side opposite to the top cover (2); A stirring assembly (7) is disposed on the side of the cylinder (1) and drives the stirring rod (5) to stir the inside of the cylinder (1); The adsorption component (8) is disposed between the stirring component (7) and the magnetic strip (6). The adsorption component (8) drives the magnetic strip (6) to rotate through the stirring component (7) and scrape the inner wall of the cylinder (1).

2. The integrated equipment for continuous dissolution of lithium hydroxide and adsorption of impurities according to claim 1, characterized in that: The stirring assembly (7) includes a connecting frame (71) disposed on the outer right side of the cylinder (1), a motor (72) is fixedly connected to the right side surface of the connecting frame (71), and a fixing frame (74) is disposed on the inner wall of the cylinder (1).

3. The integrated equipment for continuous dissolution of lithium hydroxide and adsorption of impurities according to claim 2, characterized in that: The output end of the motor (72) passes through the cylinder (1) and is fixedly connected to the first bevel gear (73), and the first bevel gear (73) rotates in the fixed frame (74), and the top of the fixed frame (74) is provided with a bearing (75).

4. The integrated equipment for continuous dissolution and impurity adsorption of lithium hydroxide according to claim 3, characterized in that: A connecting rod (76) is fixedly connected to the bearing (75). Four sets of stirring rods (5) are fixedly connected at equal intervals on the outer wall of the connecting rod (76). A second bevel gear (77) is fixedly connected to the surface of the connecting rod (76). The first bevel gear (73) meshes with the second bevel gear (77).

5. The integrated equipment for continuous dissolution of lithium hydroxide and adsorption of impurities according to claim 4, characterized in that: The adsorption assembly (8) includes a third bevel gear (81) sleeved on the connecting rod (76). Two sets of limiting rings (82) are symmetrically fixedly connected to the surfaces of the third bevel gear (81) at the upper and lower ends of the fixed frame (74). The surfaces of the two sets of limiting rings (82) are in contact with the outer wall of the fixed frame (74). The third bevel gear (81) meshes with the first bevel gear (73) and rotates on the connecting rod (76).

6. The integrated equipment for continuous dissolution of lithium hydroxide and adsorption of impurities according to claim 5, characterized in that: Four sets of connecting plates (83) are fixedly connected at equal intervals on the outer wall of the third bevel gear (81) located below the limiting ring (82). Threaded rods (84) are fixedly connected to the outer end surfaces of the four sets of connecting plates (83), and magnetic strip plates (6) are slidably connected to the four sets of threaded rods (84).

7. The integrated equipment for continuous dissolution of lithium hydroxide and adsorption of impurities according to claim 6, characterized in that: Each of the four sets of threaded rods (84) is threaded with a self-locking nut (85), and a limit groove (86) is opened on the outer wall of the magnetic strip plate (6) corresponding to the inner end of each of the four sets of self-locking nuts (85).

8. The integrated equipment for continuous dissolution and impurity adsorption of lithium hydroxide according to claim 7, characterized in that: The stirring rod (5) and the magnetic strip (6) are both designed to be staggered. The stirring rod (5) is located in the middle of the cylinder (1), and the magnetic strip (6) is located on the outer ring of the stirring rod (5).

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