Pickling vertical stirring storage tank for sodium electric hard carbon purification

Abstract

The invention discloses a pickling vertical stirring storage tank for sodium electric hard carbon purification. The pickling vertical stirring storage tank comprises a tank body, a motor, a main shaft, stirring blades, spiral blades and a conveyor, a feed opening is formed in the upper end of the tank body, a discharge opening is formed in the lower end of the tank body, a discharge opening is formed in the position, close to the lower end, of the outer side of the tank body, and the conveyor is arranged at the discharge opening so as to output materials outwards; the main shaft is arranged along the central axis of the tank body, the motor is arranged at the upper end of the outer part of the tank body, the output end of the motor is connected with the upper end of the main shaft, and the stirring blades are connected to the main shaft so as to rotate and stir materials under the driving of the main shaft; the spiral blade spirally extends around the main shaft from the inner bottom of the tank body to a position close to the upper top of the tank body, so as to rotate under the driving of the main shaft and drive materials in the center of the tank body to move from the inner bottom of the tank body to the inner top of the tank body. The acid pickling vertical stirring storage tank for sodium electric hard carbon purification has the advantages of being capable of achieving batch production, high in purification speed, good in effect and capable of reducing the production cost.

Description

Technical Field

[0001] The invention relates to a lithium battery electrode active material purification device, in particular to an acid-washing vertical stirring storage tank for sodium electric hard carbon purification. Background Art

[0002] Purity control is an eternal topic in the hard carbon and even the entire new energy materials industry. For hard carbon semi-finished products, it is difficult to remove impurity ions. Activated carbon and hard carbon semi-finished products have a high specific surface area and a stronger ability to adsorb ions, so their purity is more difficult to control and needs to be controlled from the entire process. This requires the selection of appropriate processes, furnace types and materials during carbonization and activation to reduce the introduction of impurities. Impurities introduced in the raw materials themselves and the preparation process can only be removed through purification processes.

[0003] At present, the reactor is the mainstream equipment for pickling and purification of various material manufacturers. The traditional reactor is set horizontally. By driving the reactor to rotate around its own central axis, the material is tumbled and stirred inside. After a certain period of time and temperature stirring and mixing, the material is fully reacted, and the impurities are dissolved in the water. Finally, the water and the material are separated to achieve the purpose of purification. However, the existing horizontal reactor has a large horizontal proportion and occupies a large amount of production area, and the upper space of the production workshop cannot be effectively utilized, making the production cost very high. Moreover, since the reactor itself needs to rotate continuously, its volume should not be too large, which makes the internal space limited and the single processing material is small. Therefore, the production speed is slow, the efficiency is low, and the effect is not ideal. Summary of the invention

[0004] The object of the present invention is to provide a vertical stirring tank for acid washing for purification of sodium electric hard carbon, which has the advantages of batch production, fast purification speed, good effect and reduced production cost.

[0005] In order to achieve the above-mentioned purpose, the pickling vertical stirring storage tank for sodium electric hard carbon purification provided by the present invention includes a tank body, a motor, a main shaft, a stirring blade, a spiral blade and a conveyor; the upper end of the tank body is provided with a discharge port, the lower end is provided with a discharge port, the outer side of the tank body near the lower end is provided with a discharge port, and the conveyor is arranged at the discharge port to output the material to the outside; the main shaft is arranged along the central axis of the tank body, the motor is arranged at the upper end outside the tank body and the output end is connected to the upper end of the main shaft, and the stirring blade is connected to the main shaft to rotate and stir the material under the drive of the main shaft; the spiral blade spirally extends around the main shaft from the inner bottom of the tank body to the upper top near the tank body, so as to rotate and drive the material in the center of the tank body from the inner bottom of the tank body to the inner top under the drive of the main shaft.

[0006] Compared with the prior art, the present invention provides a main shaft in the tank body, and provides stirring blades and spiral blades on the main shaft, so that the stirring blades are used to continuously stir the material in the tank body. At the same time, the spiral blades are used to drive the material near the center of the tank body, so that the material can rise from the inner bottom of the tank body to the inner top along with the spiral blades. Afterwards, the material moves downward from the inner top of the tank body, so that a circulation flow from the center upward and then from the surrounding downward can be formed inside the tank body, so that the material inside the tank body can be continuously stirred and mixed. Therefore, the stirring storage tank of the present invention can fully stir the material, so that the material can be fully and quickly pickled, the purification speed is fast, and the purification effect is very good. In addition, since spiral blades are used to drive the circulation of materials, the mixing tank can be placed in an upright manner, thereby effectively utilizing the vertical space of the production workshop. More mixing tanks can be placed under the same production area, and the tank body of each mixing tank is fixed while the internal main shaft rotates. Therefore, the volume of the mixing tank can be set larger, so that more material can be mixed each time, batch production can be achieved, and production costs are greatly reduced.

[0007] Preferably, a filter screen is provided at the inner bottom of the tank body, and a gap is formed between the filter screen and the inner bottom surface of the tank body. The filter screen is used to separate the material from the water, so that the water can be discharged from the inner bottom of the tank body through the discharge port, and then the acid water is re-injected, so that the material in the tank body can be acid-washed multiple times, and the material does not need to be replaced, the production efficiency is high, and the purification effect is greatly improved.

[0008] Preferably, a support seat is provided at the inner bottom of the tank body, and the lower end of the main shaft is arranged on the support seat through a bearing. By using the support seat to support the main shaft, it is possible to prevent the lower end of the main shaft from vibrating greatly, so that the entire tank body can be stirred smoothly, and the strength of the main shaft is enhanced, which is conducive to stirring more materials at one time and improving production efficiency.

[0009] Preferably, the inner wall of the tank body is provided with a heating device, the heating device comprises a heat-conducting shell and a heater arranged in the heat-conducting shell, the heat-conducting shell extends from the inner wall of the tank body toward the center; the heat-conducting shell is an annular structure. The heating device can heat the material, thereby shortening the reaction time, accelerating the reaction speed, and improving the production efficiency. In addition, by extending the heat-conducting shell from the inner wall of the tank body toward the center, the material moving downward from the top can fully contact the heat-conducting shell, and then the material can be fully heated, and the purification speed can be accelerated.

[0010] Specifically, the upper surface of the heating shell is inclined, and the height of the end close to the inner side wall of the tank body is greater than the height of the end close to the center; the upper surface of the heating shell is inclined at an angle of 30-45 degrees relative to the horizontal plane. By arranging the heating shell at an angle, the material can be contact heated and guided to avoid obstruction to the movement of the material.

[0011] Specifically, the heater includes a heating wire and / or a heat-conducting oil pipe. In this way, the heating wire can be used to heat the material using electricity, and the heat exchanger can be used to introduce excess heat from other equipment into the heat-conducting oil pipe to heat the material, thereby improving the applicability of the equipment and further reducing production costs.

[0012] Specifically, the heating device is arranged in multiple layers along the inner wall of the tank body, and the stirring blades are arranged in multiple layers along the central axis of the tank body, so that each position inside the tank body can be fully stirred, thereby improving the purification efficiency and purification effect.

[0013] Specifically, the heating device and the stirring blade are arranged in a staggered manner, so that the two can avoid mutual interference, leaving a certain descending channel for the material, and can also enable the material to be fully mixed and stirred.

[0014] Preferably, a ladder is provided between the tank body from the feed opening to the inner bottom surface of the tank body. The ladder can facilitate workers to enter the tank body for maintenance after shutdown, thereby improving the convenience of equipment maintenance.

[0015] Preferably, at least one of a thermometer, a pH detector and a dissolved oxygen probe is provided in the tank body. By providing the detector, the data of the material in the tank body can be detected in time, so that the purification process can be accurately controlled, thereby improving the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the acid-washed vertical stirring storage tank for purifying sodium electric hard carbon of the present invention.

[0017] Figure 2 It is a schematic diagram of the material flow inside the acid-washed vertical stirring storage tank for purification of sodium electric hard carbon of the present invention. DETAILED DESCRIPTION

[0018] In order to explain the technical content, structural features and achieved effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0019] like Figure 1As shown, the pickling vertical stirring storage tank 100 for purification of sodium electric hard carbon of the present invention comprises a tank body 1, a motor 2, a main shaft 3, a stirring blade 4, a spiral blade 5 and a conveyor 6; the upper end of the tank body 1 is provided with a discharge port 11, the lower end is provided with a discharge port 12, the discharge port 12 is provided with a valve, the outer side of the tank body 1 is provided with a discharge port 13 near the lower end, and the conveyor 6 is arranged at the discharge port 13 to output the material outward. The main shaft 3 is arranged along the central axis of the tank body 1, the motor 2 is arranged at the upper end of the outer side of the tank body 1 and the output end is connected to the upper end of the main shaft 3 through a reducer, and the stirring blade 4 is connected to the main shaft 3 to rotate and stir the material under the drive of the main shaft 3. The spiral blade 5 spirally extends from the inner bottom of the tank body 1 to the upper top near the tank body 1 around the main shaft 3, so as to rotate and drive the material in the center of the tank body 1 from the inner bottom of the tank body 1 to the inner top under the drive of the main shaft 3. The inside of the tank body 1, the main shaft 3, the stirring blade 4 and the surface of the spiral blade 5 are all provided with a polytetrafluoroethylene coating, which is resistant to acid, alkali and corrosion, ensuring long-term stable operation under acidic conditions.

[0020] The inner bottom of the tank body 1 is provided with a filter screen plate 7, and a gap is provided between the filter screen plate 7 and the inner bottom surface of the tank body 1. The filter screen plate 7 is used to separate the material from the water, so that the water can be discharged from the inner bottom of the tank body 1 through the discharge port 12, and then the acid water can be re-injected through the discharge port 11, so that the material in the tank body 1 can be acid-washed multiple times, and the material does not need to be changed, the production efficiency is high, and the purification effect is greatly improved.

[0021] The inner bottom of the tank body 1 is provided with a support seat 14, and the lower end of the main shaft 3 is arranged on the support seat 14 through a bearing. By using the support seat 14 to support the main shaft 3, it is possible to prevent the lower end of the main shaft 3 from vibrating greatly, so that the entire tank body 1 can be stirred smoothly, and the strength of the main shaft 3 can be enhanced, which is conducive to stirring more materials at one time and improving production efficiency.

[0022] The inner wall of the tank body 1 is provided with a heating device 8, which includes a heat-conducting shell 81 and a heater 82 arranged inside the heat-conducting shell 81. The heat-conducting shell 81 extends from the inner side wall of the tank body 1 toward the center; the heat-conducting shell 81 is an annular structure. The heating device 8 can heat the material when necessary, thereby shortening the reaction time, accelerating the reaction speed, and improving the production efficiency. In addition, by extending the heat-conducting shell 81 from the inner side wall of the tank body 1 toward the center, the material moving downward from the top can be fully contacted with the heat-conducting shell 81, and then the material can be fully heated to accelerate the purification speed. The heating device 8 is arranged in multiple layers along the inner side wall of the tank body 1; the stirring blades 4 are arranged in multiple layers along the central axis of the tank body 1. In this way, each position inside the tank body 1 can be fully stirred to improve the purification efficiency and purification effect. The heating device 8 and the stirring blades 4 are arranged in a staggered manner. In this way, the two can avoid mutual interference, leaving a certain descending channel for the material, and the material can be fully mixed and stirred. Specifically, the upper surface of the heating shell is inclined, and the height of the end close to the inner side wall of the tank body 1 is greater than the height of the end close to the center. The upper surface of the heating shell is inclined at an angle of 30-45 degrees relative to the horizontal plane. By arranging the heating shell at an angle, the material can be contact heated and guided, so that the material around the inside of the tank body 1 always flows downward automatically, avoiding obstruction to the movement of the material.

[0023] The heater 82 includes a heating wire 821 and / or a heat transfer oil pipe 822. In this way, the heating wire 821 can be used to heat the material by using electricity, and the excess heat of other equipment can be introduced into the heat transfer oil pipe 822 by using a heat exchanger to heat the material, thereby improving the applicability of the equipment and further reducing production costs.

[0024] The tank body 1 is provided with a ladder 15 from the discharge port 11 to the inner bottom surface of the tank body 1. The ladder 15 can facilitate workers to enter the tank body 1 for maintenance after shutdown, thereby improving the convenience of equipment maintenance. The tank body 1 is provided with at least one of a thermometer 16, a pH detector 17, and a dissolved oxygen probe 18. By providing the detector, the real-time values ​​of various data of the material inside the tank body 1 can be detected in time, so that the purification process can be accurately controlled, thereby improving the purification effect.

[0025] Combining the above and Figure 2 The working principle of the acid-washing vertical stirring storage tank 100 for purifying sodium electric hard carbon of the present invention is described in detail as follows:

[0026] First, pour the material and acid water into the tank body 1 from the discharge port 11. Then, start the motor 2 so that the motor 2 drives the main shaft 3 to rotate, and the main shaft 3 drives the stirring blade 4 and the spiral blade 5 to rotate. The stirring blade 4 stirs the material near the corresponding horizontal position inside the tank body 1. At the same time, the spiral blade 5 pushes the material near the center of the tank body 1 upward, so that the material in the center continues to rise. When the material in the center rises to the top, it flows to the surroundings, and the material around the bottom of the tank body 1 flows sideways to the center, so that the material around the tank body 1 flows downward under the action of gravity. Therefore, a circular flow is formed inside the tank body 1, in which the material rises in the middle and falls around, so that the material is continuously stirred and mixed with the acid water. When necessary, the heating device 8 can be started to heat the material. When the reaction is complete, the valve of the discharge port 12 can be opened, and the liquid is discharged after filtering by the filter screen 7, and then the conveyor 6 is started to output the material from the discharge port 13.

[0027] Compared with the prior art, the present invention provides a main shaft 3 in the tank body 1, and provides a stirring blade 4 and a spiral blade 5 on the main shaft 3, so that the stirring blade 4 is used to continuously stir the material in the tank body 1. At the same time, the spiral blade 5 is used to drive the material near the center of the tank body 1, so that the material can rise from the inner bottom to the inner top of the tank body 1 along with the spiral blade 5. Afterwards, the material moves downward from the inner top of the tank body 1, so that a circulation flow from the center upward and then from the surrounding downward can be formed inside the tank body 1, so that the material inside the tank body 1 can be continuously stirred and mixed. Therefore, the stirring storage tank 100 of the present invention can fully stir the material, so that the material can be fully and quickly pickled, the purification speed is fast, and the purification effect is very good. In addition, since the spiral blades 5 are used to drive the circulation of the material, the stirring tank 100 can be placed in an upright manner, thereby effectively utilizing the vertical space of the production workshop. In the same production area, more stirring tanks 100 can be placed, and the tank body 1 of each stirring tank 100 is fixed while the internal main shaft 3 rotates. Therefore, the volume of the stirring tank 100 can be set larger, so that more material can be stirred each time, batch production can be achieved, and production costs are greatly reduced.

[0028] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A vertical stirring tank for acid washing of sodium electric hard carbon purification, characterized in that: It includes a tank body, a motor, a main shaft, a stirring blade, a spiral blade and a conveyor; the upper end of the tank body is provided with a discharge port, the lower end is provided with a discharge port, the outer side of the tank body near the lower end is provided with a discharge port, and the conveyor is arranged at the discharge port to output the material to the outside; the main shaft is arranged along the central axis of the tank body, the motor is arranged at the upper end outside the tank body and the output end is connected to the upper end of the main shaft, the stirring blade is connected to the main shaft to rotate and stir the material under the drive of the main shaft; the spiral blade spirally extends around the main shaft from the inner bottom of the tank body to the upper top near the tank body, so as to rotate and drive the material in the center of the tank body to move from the inner bottom of the tank body to the inner top under the drive of the main shaft.

2. The acid-washed vertical stirring storage tank for purification of sodium electric hard carbon according to claim 1, characterized in that: A filter screen is provided at the inner bottom of the tank body, and a gap is formed between the filter screen and the inner bottom surface of the tank body.

3. The acid-washed vertical stirring storage tank for purification of sodium electric hard carbon according to claim 1, characterized in that: A support seat is provided at the inner bottom of the tank body, and the lower end of the main shaft is arranged on the support seat through a bearing.

4. The acid-washing vertical stirring storage tank for purification of sodium electric hard carbon according to claim 1, characterized in that: The inner wall of the tank body is provided with a heating device, which comprises a heat-conducting shell and a heater arranged in the heat-conducting shell. The heat-conducting shell extends from the inner wall of the tank body toward the center. The heat-conducting shell is an annular structure.

5. The acid-washed vertical stirring storage tank for purification of sodium electric hard carbon according to claim 4, characterized in that: The upper surface of the heating shell is inclined, and the height of one end close to the inner wall of the tank body is greater than the height of the other end close to the center; the inclination angle of the upper surface of the heating shell relative to the horizontal plane ranges from 30 to 45 degrees.

6. The acid-washed vertical stirring storage tank for purification of sodium electric hard carbon according to claim 4, characterized in that: The heater includes a heating wire and / or a heat-conducting oil pipe.

7. The acid-washed vertical stirring storage tank for purification of sodium electric hard carbon according to claim 4, characterized in that: The heating device is arranged in multiple layers along the inner wall of the tank body; and the stirring blades are arranged in multiple layers along the central axis of the tank body.

8. The acid-washed vertical stirring storage tank for purification of sodium electric hard carbon according to claim 7, characterized in that: The heating device and the stirring blade are arranged in a staggered manner.

9. The acid-washed vertical stirring storage tank for purification of sodium electric hard carbon according to claim 1, characterized in that: A ladder is provided between the tank body and the inner bottom surface of the tank body.

10. The acid-washed vertical stirring storage tank for purification of sodium electric hard carbon according to claim 1, characterized in that: At least one of a thermometer, a pH detector and a dissolved oxygen probe is arranged in the tank.

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