Negative pressure feeding system for ternary precursor

Abstract

The utility model discloses a negative pressure feeding system for a ternary precursor. The negative pressure feeding system comprises a supporting plate, the system further comprises a plurality of material storage mechanisms, all the material storage mechanisms are installed on the supporting plate, each material storage mechanism comprises a material storage hopper, a discharging barrel communicating with the lower end of the material storage hopper and a drying and ventilating assembly installed at the upper end of the material storage hopper, and a discharging opening is formed in the lower end of each discharging barrel; the negative pressure assembly comprises a negative pressure pump communicated with the upper end part of each blanking barrel; materials in the storage hopper are introduced into the discharging barrel through the negative pressure pump, and the materials are discharged from the discharging opening after entering the discharging barrel. According to the anti-caking structure capable of preventing the powdery raw materials from caking, the problems that the powdery raw materials in the storage bin are prone to caking due to the fact that wet water enters the storage bin, the feeding smoothness of the raw materials is affected, and even the quality of the raw materials is affected are solved.

Description

Technical Field

[0001] The utility model relates to the field of lithium ion battery material sintering equipment, in particular to a negative pressure feeding system for a ternary precursor. Background Art

[0002] The preparation of ternary precursor refers to the synthesis of nickel, cobalt and manganese hydroxide (ternary precursor) through a series of chemical process steps. Specifically, raw materials such as nickel salt, cobalt salt and manganese salt are dissolved in a solvent in a certain proportion, and then these metal ions are precipitated under specific conditions (such as temperature, pH value and stirring speed) through reaction methods such as coprecipitation to form a hydroxide precipitate with a specific structure and composition. After subsequent treatments such as aging, washing and drying, the ternary precursor is finally obtained. In the process of placing the raw materials into the reactor, in order to improve the feeding efficiency, the corresponding feeding system device is often required.

[0003] The utility model with the existing authorized application number CN202221957077.4 discloses a clean powder negative pressure feeding system. Although the dust mixed in the powder can be separated by the setting of the dust collector, and the setting of the control mechanism is conducive to controlling the transportation of the powder and providing convenience for discharging dust, nickel salts, cobalt salts and manganese salts are powder raw materials. The powder in the storage bin is easily agglomerated due to the entry of moisture. There is a lack of anti-agglomeration structure to prevent the powder raw materials from agglomerating, which causes the powder raw materials in the storage bin to easily agglomerate due to the entry of moisture, thereby affecting the smoothness of raw material feeding and even affecting the quality of the raw materials. Therefore, those skilled in the art provide a negative pressure feeding system for a ternary precursor to solve the problems raised in the above background technology. Summary of the invention

[0004] The purpose of the utility model is to provide a negative pressure feeding system for a ternary precursor, which has the function of filtering humid air and evaporating moisture in powder raw materials, thereby preventing the powder raw materials from agglomerating and affecting the feeding smoothness or quality of the powder raw materials.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a negative pressure feeding system for a ternary precursor, which includes a support plate; the system also includes:

[0006] A plurality of material storage mechanisms, each of which is mounted on the support plate, each of which comprises a material storage hopper, a material discharge barrel connected to the lower end of the material storage hopper, and a drying and ventilating component mounted on the upper end of the material storage hopper, wherein the lower end of the material discharge barrel is provided with a material discharge port;

[0007] A negative pressure assembly, comprising a negative pressure pump connected to the upper end of each of the lower barrels;

[0008] The negative pressure pump introduces the material in the storage hopper into the discharge barrel, and the material enters the discharge barrel and is discharged from the discharge port.

[0009] In another embodiment, the system further comprises a support column, wherein the support column is mounted on the lower end surface of the support plate.

[0010] In another embodiment, each of the storage mechanisms includes a special-shaped tube connected between the storage hopper and the discharge barrel, a butterfly valve rotatably installed in the special-shaped tube, and a servo motor for driving the butterfly valve to rotate. The servo motor drives the butterfly valve to rotate to deliver the material in the storage hopper into the discharge barrel. The rotating butterfly valve can stir the powdered salt raw material to a certain extent.

[0011] In another embodiment, a negative pressure pipe is connected between the negative pressure pump and the discharge barrel.

[0012] In another implementation manner, the negative pressure pump is provided with an exhaust pipe.

[0013] In another embodiment, a control panel for controlling the motor and the negative pressure pump is provided on the support plate.

[0014] In another embodiment, each of the storage mechanisms includes an electric heating inner tank disposed in the storage hopper, and a control panel can control the electric heating inner tank to be powered on and generate heat, thereby facilitating evaporation of moisture in the powdered salt raw material.

[0015] Due to the application of the above-mentioned technical scheme, the utility model has the following advantages compared with the prior art: the negative pressure tube of the system can cooperate with other negative pressure manufacturing structures to provide negative pressure to the top of the discharge barrel, thereby facilitating the downward flow of the powdered salt raw material in the special-shaped tube, and the dry breathable component can absorb the moisture evaporated from the powdered salt raw material and the moisture in the air entering the storage hopper from the outside, thereby preventing the powdered salt raw materials in the storage hopper and the electric heating tank from getting damp and agglomerating through the moisture absorption of the dehumidifying breathable cotton, the heating of the electric heating inner tank and the rotation and stirring of the butterfly valve from multiple aspects, greatly improving the smoothness of feeding the powdered salt raw materials and the quality of the powdered salt raw materials, and avoiding the problem that the powdered raw materials in the storage bin are easily agglomerated due to the entry of moisture due to the lack of an anti-caking structure to prevent the agglomeration of the powdered raw materials, thereby affecting the smoothness of feeding the raw materials and even affecting the quality of the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional overall structural schematic diagram of the negative pressure feeding system for ternary precursors of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the storage hopper of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the cutting-away barrel of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of a three-dimensional cutaway storage hopper of the utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the special-shaped tube of the utility model;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the ventilating joint of the utility model.

[0022] In the figure: 1. Support plate; 2. Storage hopper; 3. Breathable joint; 4. Dehumidification breathable cotton; 5. Control board; 6. Electric heating liner; 7. Special-shaped pipe; 8. Servo motor; 9. Rotating rod; 10. Butterfly valve; 11. Discharge barrel; 12. Negative pressure pipe; 13. Support column; 14. Support seat; 15. Negative pressure pump; 16. Exhaust pipe; 17. Connecting pipe; 18. Five-way pipe; 19. Coupling; 20. Sealed bearing. DETAILED DESCRIPTION

[0023] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a negative pressure feeding system for a ternary precursor of the utility model in conjunction with the accompanying drawings.

[0024] See also Figure 1-6 The negative pressure feeding system for the ternary precursor includes a support plate 1, a plurality of storage mechanisms and a negative pressure component.

[0025] Each storage mechanism is installed on the support plate 1 respectively, and each storage mechanism includes a storage hopper 2, a lower barrel 11 connected to the lower end of the storage hopper 2, and a dry and breathable component installed on the upper end of the storage hopper 2. The dry and breathable component includes a breathable joint 3 and a dehumidifying breathable cotton 4. The lower end of the lower barrel 11 is provided with a discharge port; the negative pressure component includes a negative pressure pump 15 connected to the upper end of each lower barrel 11; the negative pressure pump 15 introduces the material in the storage hopper 2 into the lower barrel 11, and the material enters the lower barrel 11 and is discharged from the discharge port.

[0026] Specifically,

[0027] There are four storage hoppers 2, and a control board 5 is fixedly connected to the upper surface of the support plate 1. A special-shaped tube 7 is fixedly connected to the bottom end of each storage hopper 2, and an electric heating liner 6 is fixedly connected to the inner wall of each storage hopper 2. The outer surface of each storage hopper 2 is fixedly connected to the inner wall of the support plate 1, and two groups of support columns 13 are fixedly connected to the bottom surface of the support plate 1. The bottom end of each group of support columns 13 is fixedly connected to two support seats 14. The electric heating liner 6 can be powered on and heated under the control of the control board 5. By providing the support columns 13, the support plate 1 and the storage hopper 2 can be lifted and jacked up, thereby facilitating the placement of other structures under the storage hopper 2, and also facilitating the placement of the reactor required for the ternary precursor reaction under the support plate 1. By providing the support seats 14, the contact area between the bottom end of the support columns 13 and the ground can be increased.

[0028] A breathable joint 3 is clamped inside each storage hopper 2, and a dehumidifying breathable cotton 4 is clamped inside each breathable joint 3. A servo motor 8 is fixedly connected to the inner wall of each special-shaped tube 7, and a rotating rod 9 is fixedly connected to the output end of each servo motor 8. A coupling 19 is fixedly connected to the outer surface of the output end of the servo motor 8, and the inner wall of the coupling 19 is fixedly connected to the outer surface of the rotating rod 9. By providing the coupling 19, the connection between the output end of the servo motor 8 and the rotating rod 9 can be strengthened, thereby increasing the rotation stability of the rotating rod 9.

[0029] A butterfly valve 10 is fixedly connected to the outer surface of each rotating rod 9, and two sealed bearings 20 are fixedly connected to the inner wall of the special-shaped tube 7. The inner ring of each sealed bearing 20 is fixedly connected to the outer surface of the rotating rod 9. By providing the sealed bearings 20, the special-shaped tube 7 and the rotating rod 9 can be connected, thereby increasing the smoothness of the rotation of the rotating rod 9.

[0030] The bottom end of each special-shaped tube 7 is fixedly connected to a discharge barrel 11, the upper surface of the support plate 1 is fixedly connected to a negative pressure pump 15, the four electric heating inner tanks 6, the four servo motors 8 and the negative pressure pump 15 are electrically connected to the control board 5 through wires, the input end of the negative pressure pump 15 is fixedly connected to a connecting pipe 17, and the output end of the negative pressure pump 15 is fixedly connected to an exhaust pipe 16. By providing the negative pressure pump 15, the exhaust pipe 16 and the connecting pipe 17, the negative pressure pump 15 cooperates with the exhaust pipe 16 to provide negative pressure to the connecting pipe 17, and thus can serve as a feeding negative pressure source for the entire feeding system device.

[0031] The top of each discharge barrel 11 is fixedly connected to a negative pressure tube 12, and a five-way tube 18 is arranged above the support plate 1. The outer surfaces of the five-way tube 18 are fixedly connected to the top of the connecting tube 17 and the tops of the four negative pressure tubes 12, respectively. By providing the five-way tube 18, the connecting tube 17 and the negative pressure tube 12 can be connected, and the negative pressure tube 12 can provide negative pressure suction at the top of the discharge barrel 11, thereby facilitating the discharge of powder raw materials in the special-shaped tube 7.

[0032] The working principle of the utility model is: first, pull the air joint 3 and the dehumidifying breathable cotton 4 on each storage hopper 2 out of the interior of the storage hopper 2, then put the powdered salt raw materials required by different ternary precursors in the four storage hoppers 2 respectively, and then immediately insert the air joint 3 and the dehumidifying breathable cotton 4 into the corresponding storage hopper 2 again, then place the ternary precursor reactor under the support plate 1, and align it with the four unloading barrels 11, and then before starting to load, operate the control panel 5 to first control the electric heating inner tank 6 in each storage hopper 2 to turn on the power and start heating, the heated electric heating inner tank 6 evaporates the moisture in the powdered salt raw materials stored in the storage hopper 2 and the electric heating inner tank 6, and is absorbed by the dehumidifying breathable cotton 4, then operate the control panel 5 to first control the negative pressure pump 15 to start creating negative pressure, and at the same time the control panel 5 controls each servo motor 8 to turn on the power and rotate appropriately, each storage hopper 2 and the electric heating inner tank 6 The powdered salt raw material in the hopper 2 is continuously moved by the rotating butterfly valve 10 and flows downward, and the negative pressure at the negative pressure tube 12 accelerates the powdered salt raw material moved out of the special-shaped tube 7 to slide down, and finally falls into the ternary precursor reactor placed in advance under the support plate 1 through the unloading barrel 11. During this period, the moisture in the gas entering the storage hopper 2 is also effectively absorbed by the dehumidifying breathable cotton 4. The moisture absorption of the dehumidifying breathable cotton 4, the heating of the electric heating inner tank 6 and the rotation and stirring of the butterfly valve 10 prevent the powdered salt raw materials in the storage hopper 2 and the electric heating inner tank 6 from being damp and agglomerated from many aspects, which greatly improves the smoothness of feeding and the quality of the powdered salt raw materials. The design of the entire negative pressure feeding system for the ternary precursor effectively solves the problem that the powdered raw materials in the storage bin are prone to agglomeration due to the entry of moisture due to the lack of an anti-caking structure for preventing the agglomeration of the powdered raw materials, thereby affecting the smoothness of raw material feeding and even affecting the quality of the raw materials.

[0033] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A negative pressure feeding system for a ternary precursor, comprising a support plate; characterized in that: The system further comprises: A plurality of material storage mechanisms, each of which is mounted on the support plate, each of which comprises a material storage hopper, a material discharge barrel connected to the lower end of the material storage hopper, and a drying and ventilating component mounted on the upper end of the material storage hopper, wherein the lower end of the material discharge barrel is provided with a material discharge port; A negative pressure assembly, comprising a negative pressure pump connected to the upper end of each of the lower barrels; The negative pressure pump introduces the material in the storage hopper into the discharge barrel, and the material enters the discharge barrel and is discharged from the discharge port.

2. The negative pressure feeding system for ternary precursor according to claim 1, characterized in that: The system further comprises a support column, wherein the support column is mounted on the lower end surface of the support plate.

3. The negative pressure feeding system for ternary precursor according to claim 1, characterized in that: Each of the material storage mechanisms includes a special-shaped tube connected between the material storage hopper and the material discharge barrel, a butterfly valve rotatably installed in the special-shaped tube, and a servo motor for driving the butterfly valve to rotate. The servo motor drives the butterfly valve to rotate to deliver the material in the material storage hopper into the material discharge barrel.

4. The negative pressure feeding system for ternary precursor according to claim 1, characterized in that: A negative pressure pipe is connected between the negative pressure pump and the lower barrel.

5. The negative pressure feeding system for ternary precursor according to claim 1, characterized in that: The negative pressure pump is provided with an exhaust pipe.

6. The negative pressure feeding system for ternary precursor according to claim 3, characterized in that: The support plate is provided with a control panel for controlling the motor and the negative pressure pump.

7. The negative pressure feeding system for ternary precursor according to claim 1, characterized in that: Each of the material storage mechanisms comprises an electric heating inner container arranged in the material storage hopper.

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