Mixing and dispersing apparatus

A mixing and dispersing apparatus, comprising:

• a cylindrical tank body, having an accommodating cavity configured to accommodate materials;
• two or more dispersing parts, arranged in the accommodating cavity, wherein each dispersing part comprises a first cylinder and a second cylinder, the first cylinder has a first cavity in communication with the accommodating cavity via a plurality of first flow-out channels, the second cylinder is located in the first cavity, and the second cylinder has a second cavity in communication with the accommodating cavity via a plurality of second flow-out channels;
• a stirring part, arranged in the accommodating cavity, wherein the stirring part comprises a first stirring paddle and a second stirring paddle that orbit a central axis of the accommodation cavity, the dispersing parts are arranged off the central axis of the accommodation cavity, and the stirring part is outside of the first cylinders;
• and
• a driving part, connected to the stirring part and the dispersing parts, respectively;
• wherein the driving part is configured to rotate the first stirring paddle and the second stirring paddle around the central axis of the accommodation cavity to mix the materials in the accommodating cavity, and
• wherein the driving part is also configured to rotate the second cylinder of each dispersing part with respect to the first cylinder of the dispersing part, such that the materials in the accommodating cavity flow into the second cavity and flow out after being dispersed in the dispersing part.