The QHJM series colloid mill is a new type of equipment for wet ultrafine particle processing. The colloid mill is a wet material micro weighting machine. The principle is to achieve the purpose of dispersion, crushing, emulsification, homogenization, and mixing by the relative motion of rotor teeth with different geometric shapes and stator teeth under high-speed rotation, so that the processed material is subjected to strong shear force, friction force, and high-frequency vibration through its adjustable annular gap under the combined force of self gravity, centrifugal force, etc. This machine has the advantages of simple operation, balanced operation, low noise, easy maintenance, corrosion resistance, wide application, and is suitable for homogenization, emulsification, and crushing of various emulsions.