What is the reason for the low flour output rate of the flour machine?

When the flour machine is working normally, the bran is uniform in size, without endosperm particles, with few attached surfaces, and is dark yellow. When the bran flakes are too large, the peeling distance will be wider, and the flour extraction rate will decrease; if the bran flakes are too small, the peeling rolling distance will be narrower, and the flour extraction rate will increase. When the size of the bran flakes is uneven, the two sides of the gap between the grinding rollers of the flour mill must be different. When the bran flakes are attached to the surface and appear white, it is mostly due to the wide grinding distance and the decrease in the powder extraction rate; When there are endosperm particles in it, it may be that both sides of the gap between the rollers of the center mill are inconsistent, or the clutch of the center mill is not closed. During operation, the bran and secondary flour should be observed frequently to judge the change of flour yield, so as to take measures as soon as possible. The vibration of the flour mill is large, which often causes the rolling distance to become loose or tight, resulting in changes in the flour yield. During the production operation, the rolling distance of the flour mill should be checked frequently, and the fluctuation of the powder extraction rate caused by the change of the rolling distance should be corrected in time.