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CN-224207838-U - Stirring device

CN224207838UCN 224207838 UCN224207838 UCN 224207838UCN-224207838-U

Abstract

The utility model discloses a stirring device, which comprises a stirring cylinder, wherein a stirring bin is arranged in the middle of the stirring cylinder, a first accommodating cavity and a second accommodating cavity are respectively arranged above and below the stirring bin, a first propeller blade is arranged on a stirring shaft of the first accommodating cavity and can form downward airflow when rotating, a second propeller blade is arranged on a stirring shaft of the second accommodating cavity and can form upward airflow when rotating, and a rotary fly cutter is arranged on a stirring shaft in the stirring bin. According to the stirring device disclosed by the utility model, the upper and lower sets of propeller blades generate opposite air flow so that materials can roll up and down in the stirring bin, the materials can achieve the effect of horizontal and transverse rolling through the rotary fly cutter positioned in the middle, the mixing uniformity degree of the materials can be obviously improved through the cooperation of the structure, so that liquid is uniformly distributed and wrapped on the surface of solid powder, and large-particle agglomeration is avoided, and the product quality is influenced.

Inventors

  • CHEN QILIN
  • ZHANG HUA
  • HU BIN

Assignees

  • 福建杉杉科技有限公司

Dates

Publication Date
20260508
Application Date
20241212

Claims (10)

  1. 1. The stirring device comprises a stirring cylinder, a stirring shaft and a feeding hole, wherein the stirring shaft is driven to rotate by a motor, and the stirring device is characterized in that a stirring bin is arranged in the middle of the stirring cylinder, a first accommodating cavity and a second accommodating cavity which are communicated with the stirring bin are respectively arranged above and below the stirring bin, the stirring shaft extends into the second accommodating cavity from the first accommodating cavity along the axial direction of the stirring cylinder, and the feeding hole is communicated with the stirring bin and is used for conveying materials to be stirred into the stirring bin; The stirring shaft of the first accommodating cavity is provided with a first propeller blade, the first propeller blade is arranged to form downward airflow when rotating, the stirring shaft of the second accommodating cavity is provided with a second propeller blade, the second propeller blade is arranged to form upward airflow when rotating, and the stirring shaft in the stirring bin is provided with a rotary fly cutter.
  2. 2. The stirring device of claim 1, wherein a mixing rod is arranged on the inner wall of the stirring cylinder in the stirring bin, and the mixing rod extends towards the stirring shaft.
  3. 3. The stirring device of claim 2, wherein the rotating fly blades are arranged above and below the mixing rod; and/or the mixing rod is provided with a sawtooth-shaped structure.
  4. 4. The stirring device of claim 1, wherein the second propeller blade is mounted on the stirring shaft by a mounting seat, a servo motor is arranged on the mounting seat, and the second propeller blade is mounted on a rotating shaft of the servo motor.
  5. 5. The stirring device of claim 1, wherein the bottom of the first accommodating cavity is of a conical structure, and the communication port between the first accommodating cavity and the stirring bin is arranged at the bottom of the conical structure; And/or, the bottom of the stirring bin is of a conical structure, and the communication port of the stirring bin and the second accommodating cavity is arranged at the bottom of the conical structure.
  6. 6. The stirring device of claim 1, wherein the feed inlet is disposed at an upper end of the stirring barrel, and the feed inlet comprises a solid phase powder feed inlet and a liquid phase fluid inlet conduit.
  7. 7. The stirring device of claim 1, wherein the first and second accommodation chambers are further provided with an air intake pipe communicating with the outside, and a filter is installed on the air intake pipe.
  8. 8. The stirring device of claim 1, wherein a filter screen is further disposed within the second receiving chamber below the second propeller blade.
  9. 9. The stirring device of claim 8, wherein a screen slot is arranged on the side wall of the stirring cylinder, and the filter screen is arranged in the second accommodating cavity through the screen slot; And/or the stirring device further comprises a vibrator for vibrating the filter screen.
  10. 10. The stirring device of claim 1, wherein a discharge port is provided at the bottom of the second accommodating chamber, and a cover plate capable of opening and closing is provided on the discharge port.

Description

Stirring device Technical Field The present utility model relates to a stirring device. Background With the increasing demands of lithium ion batteries for quick charge performance and low temperature resistance, graphite carbonized product anode materials manufactured by adopting a liquid phase coating process are widely accepted. The liquid phase coating can form a layer of amorphous carbon protective film on the surface of graphite, effectively inhibit graphite peeling, pulverization and volume expansion caused by solvation effect, reduce excessive SEI film formation during primary charging, thereby reducing adverse effects such as irreversible capacity loss and the like, and remarkably improving electrochemical properties such as primary coulomb efficiency, cyclic stability and the like of the anode material. The liquid phase coating can reduce the formation of lithium dendrites, improve the safety of the battery, and avoid the problems of short circuit and thermal runaway caused by the lithium dendrites. However, the key step in preparing the graphite anode material by using the liquid phase cladding process is that solid graphite powder, liquid asphalt and other substances are mixed uniformly, so that the quality and performance of a final product are directly affected by uniformly adhering liquid amorphous carbon on the surface of the solid powder. If the components cannot be uniformly mixed, large particles are generated by mutual adhesion, so that the product quality is seriously affected or extra working procedures are needed to increase the cost. The current mixing stirring equipment is difficult to uniformly mix solid powder and liquid with larger viscosity, large particle agglomeration is easy to generate, and the processing difficulty of the next procedure is increased. Disclosure of utility model The utility model aims to overcome the defects in the prior art and provides a stirring device. The utility model solves the technical problems by the following technical scheme: The stirring device comprises a stirring cylinder, a stirring shaft and a feeding port, wherein the stirring shaft is driven to rotate by a motor, a stirring bin is arranged in the middle of the stirring cylinder, a first accommodating cavity and a second accommodating cavity which are communicated with the stirring bin are respectively arranged above and below the stirring bin, the stirring shaft extends into the second accommodating cavity from the first accommodating cavity along the axial direction of the stirring cylinder, and the feeding port is communicated with the stirring bin and is used for conveying materials to be stirred into the stirring bin; The stirring shaft of the first accommodating cavity is provided with a first propeller blade, the first propeller blade is arranged to form downward airflow when rotating, the stirring shaft of the second accommodating cavity is provided with a second propeller blade, the second propeller blade is arranged to form upward airflow when rotating, and the stirring shaft in the stirring bin is provided with a rotary fly cutter. In this scheme, produce the hedging air current through two sets of screw paddles from top to bottom and make the material roll about in the stirring storehouse, make the material reach the horizontal effect of transversely rolling through the rotatory fly-cutter that is located the centre, can show the mixed uniformity degree that promotes the material through the cooperation of above-mentioned structure for liquid evenly distributed parcel is on solid powder surface, avoids producing the large granule caking, influences product quality. Preferably, a mixing rod is arranged on the inner wall of the stirring barrel in the stirring bin, and extends towards the direction of the stirring shaft. In this scheme, through setting up the compounding stick for the material is broken up the back again because of the big granule caking that liquid maldistribution produced in the in-process that rolls in the stirring storehouse, has increased the qualification rate of product. Preferably, the rotary fly cutters are arranged above and below the mixing rod; and/or the mixing rod is provided with a sawtooth-shaped structure. In this scheme, adopt above-mentioned structure, can further promote the effect of liquid phase cladding, promote the product qualification rate. Preferably, the second propeller blade is installed on the stirring shaft through an installation seat, a servo motor is arranged on the installation seat, and the second propeller blade is installed on a rotating shaft of the servo motor. According to the scheme, through the structure, the deflection angle of the second propeller blade can be changed through the servo motor, so that the direction of air flow generated by the second propeller blade can be adjusted, and when a coated product needs to be discharged out of the stirring bin, the second propeller blade can be rotated to form downward air flo