Sand mills, horizontal nano sand mills, and other grinding equipment are essential in the field of chemical coating grinding. To improve product fineness (reduce particle size), it is necessary to increase the energy density of the high energy density pin rod sand mill! As a result, there have been many complex pin bar sanders, with many hard alloy pin bars densely arranged on the rotor and stator. The material enters from the top and is discharged from the bottom after passing through a curved/bumpy "N" shaped route. The wear of the medium on the pin rod, rotor, and stator is extremely severe, and the material is often contaminated by metal. And only expensive zirconia grinding media can be used. The structure of the Langling rod pin sand mill is the same as that of a general sand mill, but in order to solve the heat dissipation problem, a cooling jacket is installed on the rotor.

Sanding machines are increasingly widely used in various types and colors of grinding fields such as coatings and inks. The process of coating production involves mixing solid particles of pigments and fillers into liquid coatings to form a uniform and fine suspended dispersion. The original particles of the pigments and fillers are very small, with a particle size of approximately 0.01-2 μ m. Due to the frequent bonding of raw material particles into aggregates (secondary particles) during processing, storage, and transportation, their particle size may increase to 100 μ Therefore, in coating manufacturing, it is necessary to remove aggregates from aggregation and disperse them stably and evenly in the coating.