CN218774796U

CN218774796U - Power battery material precursor reation kettle

Info

Publication number: CN218774796U
Application number: CN202222847787.8U
Authority: CN
Inventors: 许开华; 陈龙; 李涛; 刘晓磊; 王体兰; 陈涛
Original assignee: Jingmen GEM New Material Co Ltd
Current assignee: Jingmen GEM New Material Co Ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-31
Anticipated expiration: 2032-10-27

Abstract

The utility model belongs to power battery material synthesis equipment field, concretely relates to power battery material precursor reation kettle, include: the device comprises a kettle body, a guide cylinder, an upper stirrer and a lower stirrer; the guide shell is sleeved in the kettle body, and a plurality of flow distribution plates which are distributed in a staggered manner are arranged between the outer wall of the guide shell and the inner wall of the kettle body; the stirring shaft is inserted into the guide shell, the lower end of the stirring shaft extends out of the guide shell, and the upper stirrer is sleeved outside the stirring shaft and is positioned in the guide shell; the lower stirrer is positioned below the guide shell and comprises an annular plate and a plurality of first stirring blades, the annular plate and the plurality of first stirring blades are horizontally sleeved at the lower end of the stirring shaft, the plurality of first stirring blades are evenly distributed along the outer circumference of the annular plate, and the upper ends of the plurality of first stirring blades are connected with the outer circumference of the annular plate and are arranged at included angles. The flow direction of fluid in the reaction kettle is guided and controlled, the material path is controlled to achieve micro-morphology control, the problem of sphericity of the precursor of the large and small particle power battery material is solved, and energy consumption is reduced.

Description

Power battery material precursor reation kettle

Technical Field

The utility model belongs to power battery material synthesis equipment field, concretely relates to power battery material precursor reation kettle.

Background

With the development of low carbon and green, the energy consumption of power battery material production is huge, the precursor is a necessity for synthesizing the battery material, and the sphericity of the precursor directly influences the performance of the battery material. In the stage of producing the precursor by using the reaction kettle, the precursor sphericity is influenced by the stirring rotating speed, so that the morphology control of the precursor sphericity is performed by improving the stirring rotating speed of the reaction kettle and increasing the length of the paddle in the prior art, but the energy consumption is larger.

For example, chinese patent CN113413861a is a lithium ion battery cathode material precursor reaction kettle, which includes an upper guide cylinder, a lower guide cylinder, a first group of feed pipes, a second group of feed pipes, and an upper stirring blade, a middle stirring blade, and a lower stirring blade fixed on a stirring shaft. This patent only cuts apart, increases inlet pipe formation two sets of reaction systems and reacts through stirring length and the reation kettle inner chamber to the reation kettle, can not effectively optimize power battery precursor appearance, energy consumption etc..

SUMMERY OF THE UTILITY MODEL

Aiming at the defects existing in the prior art, the utility model provides an energy-saving power battery material precursor reaction kettle.

The utility model discloses a realize through following technical scheme.

A power battery material precursor reation kettle, its characterized in that, reation kettle includes: the device comprises a kettle body, a guide cylinder, a stirring shaft, an upper stirrer and a lower stirrer; the guide shell is sleeved in the kettle body, and a plurality of flow distribution plates which are distributed in a staggered manner are arranged between the outer wall of the guide shell and the inner wall of the kettle body; the stirring shaft is inserted into the guide shell, the lower end of the stirring shaft extends out of the guide shell, and the upper stirrer is sleeved outside the stirring shaft and is positioned in the guide shell; the lower stirrer is positioned below the guide shell and comprises an annular plate and a plurality of first stirring blades, the annular plate is horizontally sleeved at the lower end of the stirring shaft, the first stirring blades are evenly distributed along the outer circumference of the annular plate, and the upper ends of the first stirring blades are connected with the outer circumference of the annular plate and are arranged at included angles.

Furthermore, the guide shell is a hollow cylinder with a cross section in a trapezoid shape with a wide upper part and a narrow lower part, and a square opening is arranged at the upper end of the hollow cylinder.

Further, the included angle between the first stirring blade and the annular plate is 45 degrees.

Further, go up the agitator and include a plurality of symmetric distribution in the second stirring paddle leaf of (mixing) shaft both sides, second stirring paddle leaf and (mixing) shaft are 60 contained angles.

Furthermore, one end of the second stirring blade is a straight edge, the other end of the second stirring blade is an arc-shaped edge, and the radian of the arc-shaped edge is 130mm in radius.

Further, the first stirring paddle is a rectangular plate, and the splitter plate is a concave plate.

Further, reation kettle still includes the inlet pipe that many symmetries inserted the internal bottom of cauldron, many inlet pipes distribute outside the draft tube, the lower part body of many inlet pipes is all buckled to agitator direction down, and the discharge gate is parallel with the (mixing) shaft.

The utility model has the advantages of the technical effect, the utility model provides a power battery material precursor reation kettle improves through current reation kettle inner structure and agitating unit to further to inlet pipe institutional advancement, realize the fluid flow direction guide control in the reation kettle, control material route is in order to reach the micro-morphology control, has solved big or small granule power battery material precursor sphericity problem, and the energy consumption reduces 40% -50% simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the structure of the draft tube of the present invention.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a side view of fig. 2.

Fig. 5 is a perspective view of fig. 2.

Fig. 6 is a schematic structural view of the upper stirrer of the present invention.

Fig. 7 is a schematic view of the lower stirrer mechanism of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 5, a power battery material precursor reaction kettle comprises: the device comprises a kettle body 1, a stirring shaft 2 inserted in the kettle body 1, a motor connected with the upper end of the stirring shaft 2, a guide cylinder 3, an upper stirrer 4, a lower stirrer 5 and a plurality of feeding pipes 6 symmetrically inserted into the bottom in the kettle body 1;

the guide shell 3 is a hollow cylinder with a trapezoidal section with a wide upper part and a narrow lower part, the upper end of the hollow cylinder is provided with a square opening 7, and the upper end and the lower end of the guide shell 3 are both open; the guide shell 3 is sleeved in the kettle body 1, a plurality of distributing plates 8 which are distributed in a staggered manner are arranged between the outer wall of the guide shell 3 and the inner wall of the kettle body 1, the distributing plates 8 are concave plates, preferably 10 distributing plates, and the distributing plates 8 play a role in distributing and supporting the guide shell 3; the square opening 7 is beneficial to guiding the direction of the fluid in the guide cylinder 3;

the stirring shaft 2 is inserted into the guide shell 3, and the lower end of the stirring shaft extends out of the guide shell 3;

the upper stirrer 4 is sleeved outside the stirring shaft 2 and is positioned in the guide cylinder 3, the upper stirrer 4 comprises a fixed sleeve sleeved outside the stirring shaft 2 and a plurality of second stirring blades 9 symmetrically distributed on two sides of the stirring shaft 2, one end of each second stirring blade 9 is connected with the fixed sleeve, and the second stirring blade 9 and the stirring shaft 2 form an included angle of 60 degrees; one end of the second stirring blade 9 is a straight edge, the other end is an arc edge, and the radian of the arc edge is 130mm in radius, preferably 4 pieces;

the lower stirrer 5 is positioned below the guide shell 3, the lower stirrer 5 comprises an annular plate 10 horizontally sleeved at the lower end of the stirring shaft and a plurality of first stirring blades 11, the plurality of first stirring blades 11 are uniformly distributed along the outer circumference of the annular plate 10, and the upper ends of the plurality of first stirring blades 11 are connected with the outer circumference of the annular plate 10 and arranged at an included angle of 45 degrees; the first stirring paddle 11 is a rectangular plate, preferably 6;

many inlet pipes 6 distribute outside draft tube 3, and many inlet pipes 6 all are outside upper portion body, the lower part body of connecting, and the feed inlet of upper portion body is located the cauldron body 1, and the lower part body is buckled to 5 directions of agitator, and the discharge gate of lower part body is parallel with the (mixing) shaft.

The working principle is as follows: respectively adding materials for preparing a power battery material precursor into the kettle body 1 through the two feeding pipes 6, starting a motor to drive the stirring shaft 2 to rotate, reacting the materials at the lower stirrer 5, enabling the intermediate reaction materials to firstly move downwards due to the angle of the first stirring blade 11, then to upwards flow along the inner wall of the kettle body 1 of the reaction kettle and a gap between the inner wall and the guide cylinder 3, enabling the upwards flowing materials to downwards flow along the inner wall of the guide cylinder 3 under the action of gravity after reaching the upper end of the guide cylinder 3, accelerating the materials through the upper stirrer 4, and then enabling the materials to fall to the lower stirrer 5, and repeating the processes; the movement track of the materials in the reaction kettle is increased in the precursor synthesis process by adopting the device, so that the materials are fully reacted, and the particle sphericity and the material uniformity are improved.

The materials are stirred by the lower stirrer 5 to move downwards, flow back to the top end of the guide shell 3 at the bottom, fall under the natural gravity condition, are accelerated by the upper stirrer 4 positioned in the middle (the inner radius of the lower part of the guide shell is reduced, the speed is high), and fall under the gravity, so that the effects of lower power consumption, current reduction and more energy conservation under the condition of the same rotating speed are realized.

What has been described above is only the preferred embodiment of the present invention, and the present invention is not limited thereto. It should be noted that other modifications and equivalents may be made by those skilled in the art in light of the teachings of the present disclosure to achieve the same purpose, and should be construed as within the scope of the present disclosure.

Claims

1. A power battery material precursor reation kettle, its characterized in that, reation kettle includes: the device comprises a kettle body, a guide cylinder, a stirring shaft, an upper stirrer and a lower stirrer; the guide shell is sleeved in the kettle body, and a plurality of flow distribution plates which are distributed in a staggered manner are arranged between the outer wall of the guide shell and the inner wall of the kettle body; the stirring shaft is inserted into the guide shell, the lower end of the stirring shaft extends out of the guide shell, and the upper stirrer is sleeved outside the stirring shaft and is positioned in the guide shell; the agitator is located below the draft tube, including horizontal suit at the annular plate of (mixing) shaft lower extreme, a plurality of first stirring paddle leaf is along the outer circumference evenly distributed of annular plate, a plurality of first stirring paddle leaf's upper end all with the outer circumference of annular plate be connected and be the contained angle setting.

2. The power battery material precursor reaction kettle according to claim 1, wherein the guide cylinder is a hollow cylinder with a trapezoidal cross section with a wide upper end and a narrow lower end, and a square notch is formed in the upper end of the hollow cylinder.

3. The power battery material precursor reaction kettle of claim 1, wherein the first stirring blade is at an angle of 45 ° with respect to the annular plate.

4. The power battery material precursor reaction kettle of claim 1, wherein the upper stirrer comprises a plurality of second stirring blades symmetrically distributed on two sides of the stirring shaft, and the second stirring blades and the stirring shaft form an included angle of 60 degrees.

5. The power battery material precursor reaction kettle according to claim 4, wherein one end of the second stirring blade is a straight edge, the other end of the second stirring blade is an arc-shaped edge, and the radian of the arc-shaped edge is 130mm.

6. The power battery material precursor reaction kettle of claim 1, wherein the first stirring paddle is a rectangular plate, and the splitter plate is a concave plate.

7. The power battery material precursor reaction kettle of claim 1, further comprising a plurality of symmetrically inserted feeding pipes at the bottom in the kettle body, wherein the plurality of feeding pipes are distributed outside the guide cylinder, lower pipe bodies of the plurality of feeding pipes are bent towards a downward stirrer, and the discharging port is parallel to the stirring shaft.