CN219502583U - Concentrator for improving agglomeration of ternary precursor small particles - Google Patents

Abstract

The utility model relates to the technical field of concentrators and discloses a concentrator for improving agglomeration of small particles of ternary precursors, which comprises a tank body, wherein a motor is fixedly arranged at the top of the tank body, a stirring device connected with the motor is arranged in the tank body, a return port and a feed inlet are respectively and fixedly arranged at the bottom of the tank body, three groups of ultrasonic resonance rings are equidistantly arranged at the outer side of the tank body, the ultrasonic resonance rings are respectively arranged at the outer sides of the return port and the feed inlet, each ultrasonic resonance ring is respectively and fixedly provided with an ultrasonic power supply, the outer sides and the bottom of the tank body are respectively and fixedly provided with an ultrasonic power supply, the ultrasonic power supplies are electrically connected with the ultrasonic power supplies on the return port and the feed inlet, the ultrasonic power supplies are electrically connected with the corresponding ultrasonic power supplies, and a cleaning mechanism is arranged on the tank body.

Description

Concentrator for improving agglomeration of ternary precursor small particles

Technical Field

The utility model relates to the technical field of concentrators, in particular to a concentrator for improving agglomeration of small ternary precursor particles.

Background

The ternary lithium battery becomes one of excellent solutions due to the characteristics of high capacity, high cycle and high multiplying power, and is widely applied to the fields of energy storage, digital codes, automobiles and the like. The performance of the ternary lithium battery mainly depends on the positive electrode material, and the key of the positive electrode material is the ternary precursor.

The three-element precursor is prepared by adopting a coprecipitation method in the industry, and can be synthesized by a continuous method and an intermittent method according to different processes, wherein the precursor synthesized by the intermittent method has good consistency, high tap density and narrow particle size distribution, and is widely applied to the manufacture of the positive electrode material of the power battery. In the process of batch process synthesis, the slurry in the reaction kettle is required to be transferred into a thickener through a pump, solid-liquid separation is carried out on the slurry through a filter element with small aperture under stronger positive pressure, and clear liquid is discharged out of the thickener through the filter element, so that the concentration of the slurry in the thickener is improved, and the slurry with high concentration is returned to the reaction kettle again, so that the integral concentration of the reaction kettle is continuously increased until the synthesis reaction is finished.

In the actual production process, the intermittent process often faces the problem of agglomeration of small precursor particles, so that the sphericity of the product is poor, and the electrochemical performance of the positive electrode material is further affected later. The root cause of agglomeration is insufficient stirring intensity, and a common solution is to increase the stirring speed of the reaction kettle and the stirring paddle structure, wherein the stirring speed is often required to be increased to more than 300 rpm. However, the rotating speed in the thickener is generally not too high (about 50 rpm), otherwise, the material running phenomenon is generated and the filtering efficiency and the service life of the filter element are influenced, so that the precursor slurry is easy to agglomerate in the thickener, the agglomerated materials cannot be redispersed after being returned to the reaction kettle, and finally the product quality is reduced.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the thickener for improving the agglomeration of small particles of the ternary precursor, and the condition that the precursor slurry is agglomerated in the thickener is improved under the condition that the rotating speed and stirring strength of the existing thickener cannot be improved, so that the integral particle agglomeration of a product is reduced, and the product performance is improved.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an improve concentrator that ternary precursor granule gathers, includes the jar body, the top fixed mounting of the jar body has the motor, the inside of the jar body is provided with the agitating unit who is connected with the motor, and the bottom of the jar body is fixed mounting respectively has return opening and feed inlet, the outside equidistance of the jar body is provided with three ultrasonic resonance circles of group, and ultrasonic resonance circle is all installed in the outside of return opening and feed inlet, and every ultrasonic resonance circle all installs and is connected with ultrasonic transducer, the outside and the bottom of the jar body are all fixed mounting and are connected ultrasonic power supply, connect ultrasonic power supply and return opening and the last ultrasonic transducer electric connection of feed inlet, ultrasonic transducer and corresponding connect ultrasonic power supply electric connection together, be provided with on the jar body and remove clear mechanism.

Preferably, the cleaning mechanism comprises a cleaning pipe and two cleaning pipes, two cleaning pipes are fixedly arranged on two sides of the tank body, one end of the cleaning pipe extends to the inside of the tank body, one end of the cleaning pipe corresponding to the inside of the tank body is fixedly provided with a cleaning pipe, and the top end of the cleaning pipe is fixedly provided with a filter screen.

Preferably, the stirring device comprises a stirring shaft, stirring blades, a transverse stirring device, a transverse shaft and a stirring paddle, wherein the stirring shaft is fixedly connected with an output shaft of a motor, two groups of stirring blades are fixedly arranged on the outer side of the stirring shaft, and the two groups of stirring blades are in mirror image arrangement.

Preferably, the transverse stirring device comprises a transverse shaft and stirring paddles, the transverse shaft is fixedly arranged on the stirring shaft, the stirring paddles are fixedly arranged at the tail end of the transverse shaft, and the transverse shaft is positioned between the upper stirring blade and the lower stirring blade.

Preferably, the stirring blade is obliquely arranged.

(III) beneficial effects

Compared with the prior art, the utility model provides a thickener for improving the agglomeration of small particles of ternary precursor, which has the following beneficial effects:

1. on the basis of a traditional thickener, the upper, middle and lower layers of the outer wall of the tank body, the reflux port and the outer side of the feed port are respectively provided with the high-frequency ultrasonic resonance ring and the ultrasonic transducer, and meanwhile, the ultrasonic transducer is externally connected with an ultrasonic power supply. When materials pass through a pipeline of a thickener and the interior of the thickener, high-frequency ultrasonic vibration waves are applied to the materials, and the particles receive huge ultrasonic acceleration, so that the particles in slurry are dispersed, agglomeration in the thickener is avoided, and the materials are returned to a reaction kettle in a uniformly dispersed mode, thereby solving the problem of agglomeration in the process.

Drawings

FIG. 1 is a schematic perspective view of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the structure of the present utility model.

In the figure: 1. a tank body; 2. a motor; 3. connecting an ultrasonic power supply; 4. an ultrasonic transducer; 5. discharging a tube; 6. a return port; 7. a feed inlet; 8. cleaning the pipe; 9. a filter screen; 10. stirring the leaves; 11. a horizontal axis; 12. stirring paddles; 13. a stirring shaft; 14. an ultrasonic resonance ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, a thickener for improving agglomeration of small particles of ternary precursor comprises a tank body 1, wherein a motor 2 is fixedly installed at the top of the tank body 1, a stirring device connected with the motor 2 is arranged in the tank body 1, a return port 6 and a feed port 7 are fixedly installed at the bottom of the tank body 1 respectively, three groups of ultrasonic resonance rings 14 are equidistantly arranged at the outer side of the tank body 1, the ultrasonic resonance rings 14 are installed at the outer sides of the return port 6 and the feed port 7, an ultrasonic transducer 4 is installed and connected at each ultrasonic resonance ring 14, an ultrasonic power source 3 is fixedly installed at the outer side and the bottom of the tank body 1, the ultrasonic transducer 4 is electrically connected with the ultrasonic power source 3 and the ultrasonic transducer 4 on the return port 6 and the feed port 7, an ultrasonic cleaning mechanism is arranged on the tank body 1, and on the basis of a traditional thickener, the ultrasonic transducers 14 and 4 with high frequencies are respectively installed at the upper, middle and lower layers of the outer wall of the tank body 1, the outer side of the return port 6 and the feed port 7, and the ultrasonic transducer 4 are externally connected. When materials pass through a pipeline of a thickener and the interior of the thickener, high-frequency ultrasonic vibration waves are applied to the materials, and the particles receive huge ultrasonic acceleration, so that the particles in slurry are dispersed, agglomeration in the thickener is avoided, and the materials are returned to a reaction kettle in a uniformly dispersed mode, thereby solving the problem of agglomeration in the process.

Further, the cleaning mechanism comprises a cleaning pipe 5 and two cleaning pipes 8, two cleaning pipes 5 are fixedly arranged on two sides of the tank body 1, one ends of the cleaning pipes 5 extend to the inside of the tank body 1, the cleaning pipes 5 correspond to the cleaning pipes 8 which are fixedly arranged at one ends of the inside of the tank body 1, a filter screen 9 is fixedly arranged at the top end of the cleaning pipes 8, and when stirring, clear liquid produced by materials is filtered by the filter screen 9 and discharged by the cleaning pipes 8 and the cleaning pipes 5.

Further, agitating unit includes (mixing) shaft 13, stirring leaf 10, cross axle 11 and stirring rake 12, the output shaft fixed connection of (mixing) shaft 13 and motor 2 is in the same place, the outside fixed mounting of (mixing) shaft 13 has two sets of stirring leaf 10, two sets of stirring leaf 10 are the mirror image setting, cross axle 11 fixed mounting is on (mixing) shaft 13, the terminal fixed mounting of cross axle 11 has stirring rake 12, cross axle 11 is located between two sets of stirring leaf 10 from top to bottom, when the material gets into jar body 1 inside, motor 2 drives stirring leaf 13 rotatory, thereby drive stirring leaf 10, cross axle 11 and stirring rake 12 rotate, thereby stir the material, such setting can carry out abundant stirring to the material, make the granule in the material spread fast, ultrasonic resonance circle 14 and ultrasonic transducer 4 are gone up in the cooperation, let granule in the material fully disperse.

Further, the stirring blade 10 is inclined.

After the thickener provided by the utility model is used, the agglomeration phenomenon of precursor particles is improved to a great extent, the sphericity of secondary particles is better, the dispersion of particles is more uniform, and the processability and electrochemical properties of a final product are greatly improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides an improve thickener that ternary precursor granule gathers, includes a jar body (1), the top fixed mounting of jar body (1) has motor (2), the inside of jar body (1) is provided with the agitating unit who is connected with motor (2), and the bottom of jar body (1) is fixed mounting respectively has return port (6) and feed inlet (7), a serial communication port, the outside equidistance of jar body (1) is provided with three ultrasonic resonance circle (14), and ultrasonic resonance circle (14) are all installed in the outside of return port (6) and feed inlet (7), and every ultrasonic resonance circle (14) all installs and is connected with ultrasonic transducer (4), the outside and the equal fixed mounting of bottom of jar body (1) connect ultrasonic transducer (3), connect ultrasonic transducer (4) electric connection on ultrasonic transducer (3) and return port (6) and the feed inlet (7), ultrasonic transducer (4) are in the same place with corresponding ultrasonic transducer (3) electric connection, be provided with on jar body (1) and clear mechanism.

2. A concentrator for improving agglomeration of small particles of ternary precursor according to claim 1, wherein: the cleaning mechanism comprises a cleaning pipe (5) and two cleaning pipes (8), wherein two cleaning pipes (5) are fixedly installed on two sides of the tank body (1), one end of each cleaning pipe (5) extends to the inside of the tank body (1), one end of each cleaning pipe (5) corresponding to the inside of the tank body (1) is fixedly provided with the cleaning pipe (8), and the top end of each cleaning pipe (8) is fixedly provided with a filter screen (9).

3. A concentrator for improving agglomeration of small particles of ternary precursor according to claim 1, wherein: the stirring device comprises a stirring shaft (13), stirring blades (10) and a transverse stirring device, wherein the stirring shaft (13) is fixedly connected with an output shaft of the motor (2), two groups of stirring blades (10) are fixedly arranged on the outer side of the stirring shaft (13), and the two groups of stirring blades (10) are arranged in a mirror image mode.

4. A thickener for improving agglomeration of small particles of ternary precursor according to claim 3, wherein: the transverse stirring device comprises a transverse shaft (11) and stirring paddles (12), the transverse shaft (11) is fixedly arranged on a stirring shaft (13), the stirring paddles (12) are fixedly arranged at the tail end of the transverse shaft (11), and the transverse shaft (11) is positioned between the upper stirring blade (10) and the lower stirring blade (10).

5. A thickener for improving agglomeration of small particles of ternary precursor according to claim 3, wherein: the stirring blades (10) are obliquely arranged.