Ternary precursor preparation mixing tank

Abstract

The utility model discloses a ternary precursor preparation mixing tank which comprises a tank body, a plurality of liquid feeding pipes, a stirring structure and a sulfate feeding hopper, and further comprises a grading discharging mechanism, the sulfate feeding hopper comprises a middle discharging area and two lateral installation areas, and the grading discharging mechanism comprises a guide baffle arranged on the inner side of the middle discharging area. A plurality of holes are formed in the guide baffle plate, splitter plates are movably arranged at the bottoms of the two sides of the guide baffle plate towards one side of the lateral mounting area, and a crushing structure is arranged on the inner side of the lateral mounting area, so that the proportion of sulfate in liquid can be ensured, and the production quality of a ternary precursor is ensured.

Description

Technical Field

[0001] The utility model relates to a preparation structure of ternary precursor, in particular to a mixing tank for preparing ternary precursor. Background Art

[0002] The ternary precursor material is nickel-cobalt-manganese hydroxide, which uses a sulfuric acid mixed solution formed by mixing nickel sulfate, cobalt sulfate, manganese sulfate and a solvent as raw materials, and then adds auxiliary agents (ammonia solution, alkali solution) for stirring and mixing. The stirred solution is then pumped into a concentrator for concentration. When the concentrator reaches the specified liquid level, the filtrate valve is opened to discharge the clear liquid, and finally the overflow hole valve is opened to discharge the material. The discharged material is qualified after washing, drying, screening and packaging.

[0003] During the batching process of the sulfuric acid mixed solution, the liquid raw materials in the raw material kettle are pumped into the required batching equipment in cooperation with a flow meter, and then the cover plate of the feeding port is opened. A utility knife is used to cut open the packaging bag of the sulfate salt, and the sulfate salt is put into the batching kettle and stirred at a certain temperature and liquid level. However, during the feeding process of the sulfate salt, the workers found that some of the whole bags of sulfate salt were caked, which would affect the overall feeding. Even after manually crushing it with a wooden mallet, the caked particles were still much larger than the normal particles, so the normal dissolution and batching time needed to be extended, otherwise it was easy to cause the concentration of the sulfuric acid mixed solution not to meet the requirements for preparing the ternary precursor.

[0004] Therefore, this case aims to provide a mixing tank for preparing ternary precursor, which can uniformly crush the particles and completely stir and mix them with the required liquid during the preparation stage of the sulfuric acid solution, so as to ensure the proportion of the sulfate salt in the liquid and the production quality of the ternary precursor. Content of the Utility Model

[0005] The utility model provides a mixing tank for preparing ternary precursor, which can effectively solve the above problems.

[0006] The utility model is realized as follows:

[0007] A mixing tank for preparing ternary precursor, comprising:

[0008] A tank body for mixing sulfuric acid solution, wherein a plurality of liquid feed pipes are arranged at the top of the tank body, a stirring structure inserted into the tank body is arranged at the top of the tank body, and a sulfate salt feed hopper is arranged on the side of the stirring structure;

[0009] The grading and blanking mechanism, the sulfate feed hopper includes a central blanking area and two lateral installation areas. The grading and blanking mechanism includes a guiding baffle plate arranged inside the central blanking area. The guiding baffle plate is in an inverted V-shaped structure, and a number of holes are opened on the guiding baffle plate. At the bottom on both sides of the guiding baffle plate, there are diversion plates movably arranged towards one side of the lateral installation area. The diversion plates are fixed by a resilient structure. A crushing structure is arranged inside the lateral installation area. When the particles pour onto the guiding baffle plate, the particles with a particle size smaller than the holes directly pass through the guiding baffle plate and enter the tank body. The particles with a particle size larger than the holes fall onto the upper part of the diversion plates through the guiding baffle plate, and the particles falling onto the diversion plates are crushed by the crushing structure so that the particles can enter the tank body through the diversion plates.

[0010] As a further improvement, the diameter of the holes on the guiding baffle plate is three times the required particle size, and the top of the guiding baffle plate is provided with a rounded corner.

[0011] As a further improvement, the initial position of the diversion plate is flush with the bottom end of the guiding baffle plate, and the diameter of the through holes on the diversion plate is twice the required particle size.

[0012] As a further improvement, the resilient structure includes two rows of resilient frames arranged in the lateral installation area. A fitting plate is fixedly connected to the top of the resilient frames, and the fitting plate is locked below the diversion plate. An outer sealing awning is glued to one side of the top surface of the diversion plate close to the guiding baffle plate.

[0013] As a further improvement, the resilient frame includes a guiding cylinder arranged on the inner side wall of the lateral installation area. A deviation correcting cylinder is arranged above the guiding cylinder. A resilient spring is arranged inside the guiding cylinder and the deviation correcting cylinder, and the resilient spring is locked to the bottom of the fitting plate.

[0014] As a further improvement, the crushing structure includes a driving motor arranged in the upper half part inside the lateral installation area. A rolling plate is arranged at the bottom of all the driving motors.

[0015] As a further improvement, a number of rolling nails are welded to the bottom of the rolling plate.

[0016] The beneficial effects of the present utility model are:

[0017] In some existing mixing solution batching tanks, most of them directly pour whole bags of sulfate particles into the tank through the opening on the tank body. During the pouring process, if agglomerated particles are found, they will be crushed with a wooden mallet or by hand. Although this can solve the problem of caking, on the one hand, the feeding speed is too fast for workers to react, and on the other hand, impurities are easily brought in when workers intervene, affecting the purity of the solution. Therefore, in the present utility model, a grading feeding mechanism is provided, and a guiding baffle is arranged at the position of the sulfate feed hopper. Regular-sized sulfate particles can directly enter the tank through the guiding baffle and be mixed and stirred with the solution. However, the agglomerates due to improper storage or product quality problems will slide down along the guiding baffle to the position of the diversion plate and be continuously crushed by the crushing structure arranged above the diversion plate until the particles meet the requirements and then fall from the position of the diversion plate. Thus, while not blocking the fall of regular particles, whole agglomerated particles can also enter the tank in a timely manner, avoiding the situation where some particles pile up at the feeding position and cannot fall, thereby affecting subsequent feeding.

[0018] When setting the guiding baffle and the diversion plate, it is necessary to consider the residence time of the particles to ensure that the particles can be quickly and smoothly separated and transported into the tank. Therefore, in this case, the diameter of the holes on the guiding baffle is set to three times the required particle size, and the diameter of the through holes on the diversion plate is set to twice the required particle size, so as to complete rapid feeding while also being able to separate the materials. Moreover, if the through holes on the diversion plate are set too small, it is very easy to cause particle accumulation on the diversion plate, affecting normal feeding. Therefore, the through holes on the diversion plate should not be set too small.

[0019] When crushing the particles on the diversion plate through the crushing structure, if the diversion plate is installed in a completely fixed manner, the mobility of the particles is poor, and the agglomerates intersecting with the crushing structure cannot be crushed effectively. Therefore, in this case, a rebound structure is provided, and the diversion plate is fixed on the rebound frame. The telescoping of the rebound frame drives the particles on the diversion plate to have a certain jumping phenomenon when shaken, and their positions can change, thereby improving the crushing effect. In order to prevent leakage of materials due to the gap between the movably arranged diversion plate and the guiding baffle, the present utility model also sets an outer sealing awning on the side of the diversion plate to seal the materials, thereby completely blocking the particles and preventing particles with non-compliant particle sizes from directly entering the tank.

[0020] To improve the crushing effect of the crushing structure on agglomerated particles, the present utility model arranges crushing nails on the crushing plate at the bottom of the crushing structure. The agglomerated particles can be crushed faster through the crushing nails, and combined with the continuously moving up and down diversion plate, the overall crushing effect is better. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0022] Figure 1 is a schematic perspective view of the present utility model.

[0023] Figure 2 is a schematic top view of the present utility model.

[0024] Figure 3 is the present utility model Figure 2 a sectional view taken along line A-A in the present utility model.

[0025] Figure 4 is the present utility model Figure 3 an enlarged view of area B in the present utility model.

[0026] Figure 5 is a schematic structural view of the sulfate feed hopper of the present utility model.

[0027] Figure 6 is a schematic structural view of the grading and discharging mechanism of the present utility model.

[0028] Figure 7 is a schematic structural view of the crushing structure of the present utility model.

[0029] Figure 8 is a schematic structural view of the side flow guiding structure of the present utility model. Specific Embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0031] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0032] Referring to Figures 1 to 8 As shown, a mixing tank for preparing ternary precursor includes a tank body 10 for mixing sulfuric acid solution. A plurality of liquid feed pipes 20 are provided at the top of the tank body 10. A stirring structure 30 inserted into the tank body 10 is provided at the top of the tank body 10. A sulfate feed hopper 40 is provided on the side of the stirring structure 30. The mixing solution batching device further includes: a grading feeding mechanism 50. The sulfate feed hopper 40 includes a middle feeding area 41 and two lateral installation areas 42. The grading feeding mechanism 50 includes a guiding baffle 51 provided inside the middle feeding area 41. The guiding baffle 51 is in an inverted V-shaped structure. A plurality of holes are provided on the guiding baffle 51. Deflecting plates 52 are movably provided at the bottom on both sides of the guiding baffle 51 towards one side of the lateral installation area 42. The deflecting plates 52 are fixed by a resilient structure 53. A crushing structure 54 is provided inside the lateral installation area 42. When particles pour onto the guiding baffle 51, the particles with a particle size smaller than the holes directly enter the tank body 10 through the guiding baffle 51. The particles with a particle size larger than the holes fall onto the upper part of the deflecting plates 52. The particles falling onto the deflecting plates 52 are crushed by the crushing structure 54 so that the particles can enter the tank body 10 through the deflecting plates 52; a side flow guiding structure 60. A plurality of stirring blades 31 are provided on the stirring rod of the stirring structure 30. The side flow guiding structure 60 includes two guiding arc hoppers 61 provided at the inner top of the tank body 10. The guiding arc hoppers 61 are located below the projection position of the deflecting plates 52. There is a material jolting structure 62 fixed to the tank body 10 on both sides of the guiding arc hoppers 61. The end of the guiding arc hoppers 61 extends to the side of the stirring blade 31 at the top of the stirring rod. When the particles fall onto the guiding arc hoppers 61 through the deflecting plates 52, the guiding arc hoppers 61 are pressed to squeeze the material jolting structure 62. The material jolting structure 62 vibrates the guiding arc hoppers 61 and conveys the particles on the guiding arc hoppers 61 to the stirring blade 31 at the top of the stirring rod.

[0033] Sulfate solution is one of the important raw materials for ternary precursor. In the process of preparing sulfate solution, a variety of solids such as manganese sulfate, nickel sulfate, cobalt sulfate and other various auxiliary liquids need to be added. In this embodiment, liquid raw materials are added through the liquid feed pipes 20, and solid raw materials are added through the sulfate feed hopper 40.

[0034] During the process of adding raw materials, first add the liquid raw materials, then add the solid raw materials, and finally stir. For the materials with a supplementary feeding amount of more than 200 kg, sample after stirring for 2 hours; for those with a supplementary feeding amount of less than 200 kg, sample after stirring for 1 hour. For the materials with a supplementary feeding amount less than one bag, weigh accurately with an electronic scale.

[0035] The length of the stirring blade 31 at the topmost part is less than that of the stirring blades 31 below, so as to better adapt to the side flow guiding structure 60.

[0036] During the process of feeding the whole bag of sulfate particles, the whole bag of particles is moved to the position of the tank body 10 by the movement of the overhead crane in the factory area, and then fixed by manual assistance and fed. Workers need to hold the bag body, which is difficult to operate. Therefore, in this embodiment, a clamping gap 43 is opened on the top surface of the sulfate feed hopper 40, and a clamping member 44 is arranged on the side of the clamping gap 43 away from the feeding side of the sulfate feed hopper 40. When the cloth bag filled with particles is embedded in the clamping gap 43, one end of the cloth bag is fixed by the clamping member 44, so as to provide certain auxiliary support during the stage of opening the bag with a utility knife.

[0037] In some existing batching tank bodies for mixed solutions, most of them directly pour the whole bag of sulfate particles into the tank body through the opening on the tank body. If agglomerated particles are found during the pouring process, they will be crushed with a wooden mallet or by hand. Although this can solve the problem of caking, on the one hand, the feeding speed is too fast for workers to react, and on the other hand, it is easy for workers to introduce some impurities when intervening, affecting the purity of the solution. Therefore, in this embodiment, through the arranged grading feeding mechanism 50, a guiding baffle 51 is arranged at the position of the sulfate feed hopper 40. Regular-sized sulfate particles can directly enter the tank body 10 through the guiding baffle 51 and be mixed and stirred with the solution, while the agglomerated particles due to improper storage or product quality problems will slide down along the guiding baffle 51 to the position of the shunt plate 52 and be continuously pressed by the crushing structure 54 arranged above the shunt plate 52 until the particles meet the requirements and then fall from the position of the shunt plate 52. Thus, while not blocking the falling of regular particles, the whole agglomerated particles can also enter the tank body 10 in a timely manner, avoiding the situation that some particles are piled up at the feeding position and cannot fall, thereby affecting the subsequent feeding.

[0038] When setting the guiding baffle 51 and the diversion plate 52, it is necessary to consider the residence time of the particles, so as to ensure that the particles can be quickly and smoothly separated and conveyed into the tank body 10. Therefore, in this embodiment, the hole diameter on the guiding baffle 51 is three times the required particle size, and the top of the guiding baffle 51 is provided with a rounded corner. First, the hole diameter on the guiding baffle 51 is set to three times the required particle size. Secondly, the initial position of the diversion plate 52 is flush with the bottom end of the guiding baffle 51, and the through-hole diameter on the diversion plate 52 is twice the required particle size. By setting the through-hole diameter on the diversion plate 52 to twice the required particle size, rapid blanking and material separation can be achieved simultaneously. If the through-holes on the diversion plate 52 are set too small, it is easy to cause particle accumulation on the diversion plate 52, affecting normal blanking. Therefore, the through-holes on the diversion plate 52 should not be set too small either.

[0039] When the rolling and crushing structure 54 rolls and crushes the particles on the diversion plate 52, if the diversion plate 52 is installed in a completely fixed manner, the mobility of the particles is poor, and the agglomerates intersecting with the rolling and crushing structure 54 cannot be crushed effectively. Therefore, in this embodiment, the resilient structure 53 includes two rows of resilient frames 531 arranged in the lateral installation area 42. A fitting plate 532 is fixedly connected to the top of the resilient frame 531, and the fitting plate 532 is locked below the diversion plate 52. By setting the resilient structure 53, the diversion plate 52 is fixed on the resilient frame 531. Through the expansion and contraction of the resilient frame 531, the particles on the diversion plate 52 can have a certain jumping phenomenon when shaken, and their positions can change, thereby improving the rolling and crushing effect. In order to prevent leakage of materials due to a gap between the movably arranged diversion plate 52 and the guiding baffle 51, preferably, an outer sealing tent 533 is adhesively attached to one side of the top surface of the diversion plate 52 close to the guiding baffle 51. By arranging the outer sealing tent 533 on the side of the diversion plate 52 for sealing the materials, the particles can be completely blocked to prevent particles with unqualified particle sizes from directly entering the tank body 10.

[0040] In the specific rolling and crushing stage, the rolling and crushing structure 54 includes a driving motor 541 arranged in the upper half of the inner side of the lateral installation area 42. A rolling plate 542 is arranged at the bottom of all the driving motors 541. Through a plurality of driving motors 541, the same rolling plate 542 is driven to roll and crush the agglomerated particles. In order to improve the rolling and crushing effect of the rolling and crushing structure 54 on the agglomerated particles, in this embodiment, rolling nails are arranged on the rolling plate 542 at the bottom of the rolling and crushing structure 54. The agglomerated particles can be crushed faster by the rolling nails. Cooperating with the continuously moving up and down diversion plate 52, the overall crushing effect is better. Even if there is moisture in the particles, a good crushing and separation effect can also be achieved.

[0041] Although the agglomerated particles are processed by the flow dividing plate 52 and the crushing structure 54, due to continuous feeding, the number of times the crushing structure 54 can reciprocally roll and crush is limited, and it is difficult to crush the particles into the required particle size in a short time. Therefore, the utility model further sets a side flow guiding structure 60 at the lower end position of the flow dividing plate 52. The particles that fall through the guiding baffle 51 can directly fall into the solution, while the particles that fall through the flow dividing plate 52 will fall onto the side flow guiding structure 60. The falling particles will exert pressure on the guiding arc hopper 61, thereby causing the guiding arc hopper 61 movably arranged on the material jolting structure 62 to start jolting up and down, continuously conveying the particles downward. During the conveying process, separation can be achieved, and the end of the guiding arc hopper 61 is opposite to the stirring blade at the top of the stirring rod. The conveyed particles will directly be subjected to a cutting effect, so that the particles that originally did not meet the requirements can better react with the solution, and the prepared feed liquid meets the requirements for the preparation of ternary precursors.

[0042] Among them, the material jolting structure 62 includes an arc-shaped pipe 621 arranged at the top inside the tank body 10. A plurality of hanging springs 622 are cantilevered at the bottom of the arc-shaped pipe 621, and the bottom of the hanging springs 622 is fixedly connected to the guiding arc hopper 61. The arc-shaped pipe 621 can adapt to the arc-shaped inner surface of the tank body 10, and it can serve as the hanging surface of the hanging springs 622 to fix the springs. Moreover, the hanging springs 622 in this embodiment need to be set thinner to ensure their sensitivity.

[0043] The above is only the preferred implementation manner of the present utility model and is not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modification, equivalent replacement, improvement, 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 mixing tank for preparing ternary precursors, characterized in that, Comprising: A tank body (10) for mixing sulfuric acid solution, several liquid feed pipes (20) are arranged at the top of the tank body (10), a stirring structure (30) inserted into the tank body (10) is arranged at the top of the tank body (10), and a sulfate feed hopper (40) is arranged on the side of the stirring structure (30). A grading feeding mechanism (50), the sulfate feed hopper (40) includes a middle feeding area (41) and two lateral installation areas (42), the grading feeding mechanism (50) includes a guiding baffle (51) arranged inside the middle feeding area (41), the guiding baffle (51) is in an inverted V-shaped structure, several holes are opened on the guiding baffle (51), diversion plates (52) are movably arranged at the bottoms on both sides of the guiding baffle (51) towards one side of the lateral installation area (42), the diversion plates (52) are fixed by a resilient structure (53), and a crushing structure (54) is arranged inside the lateral installation area (42). When particles pour onto the guiding baffle (51), the particles with a particle size smaller than the holes directly enter the tank body (10) through the guiding baffle (51), and the particles with a particle size larger than the holes fall onto the upper part of the diversion plate (52) through the guiding baffle (51), and the particles falling onto the diversion plate (52) are crushed by the crushing structure (54) so that the particles can enter the tank body (10) through the diversion plate (52).

2. The premixing tank for preparing ternary precursors according to claim 1, characterized in that, The diameter of the holes on the guiding baffle (51) is three times the required particle size, and the top of the guiding baffle (51) is provided with a rounded corner.

3. A mixing tank for preparing ternary precursors according to claim 2, characterized in that, The initial position of the diversion plate (52) is flush with the bottom end of the guiding baffle (51), and the diameter of the through holes on the diversion plate (52) is twice the required particle size.

4. A mixing tank for preparing ternary precursors according to claim 1, characterized in that, The resilient structure (53) includes two rows of resilient frames (531) arranged in the lateral installation area (42), a fitting plate (532) is fixedly connected to the top of the resilient frames (531), the fitting plate (532) is locked under the diversion plate (52), and an outer sealing tent (533) is adhesively bonded to one side of the top surface of the diversion plate (52) close to the guiding baffle (51).

5. A mixing tank for preparing ternary precursors according to claim 4, characterized in that, The resilient frame (531) includes a guiding cylinder (5311) arranged on the inner side wall of the lateral installation area (42), a deviation correcting cylinder (5312) is arranged above the guiding cylinder (5311), a resilient spring (5313) is arranged inside the guiding cylinder (5311) and the deviation correcting cylinder (5312), and the resilient spring (5313) is locked to the bottom of the fitting plate (532).

6. A mixing tank for preparing ternary precursors according to claim 1, characterized in that, The crushing structure (54) includes a driving motor (541) arranged in the upper half part inside the lateral installation area (42), and a pressing plate (542) is arranged at the bottom of all the driving motors (541).

7. A mixing tank for preparing ternary precursors according to claim 6, characterized in that, Several rolling nails are welded to the bottom of the pressing plate (542).

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