18 teeth and 24 teeth. The division of labor between the drawing roller and the core grinding of the combined flour mill is different. The number of brushed teeth on the grinding roller is also different. Generally, using 18 teeth or 24 teeth will make the flour whiter. The grinding mill must ensure that the grinding roller Drawing parameters ensure the quality of grinding powder, the assembly and arrangement of grinding rollers must be correct, and the working performance of the drawing working surface must be good. The mesh size of the powder sieve should not be too coarse, but should be above 90 mesh.