Introduction: TQSX series suction gravity classifying destoner is widely used for separating stones from continuous granular grain flow by density.Such as millet, rice, wheat, buckwheat, corn, beans and so on.This specific gravity grading stoner is used in grain milling for the classification and separation .Widely use, suitable for rice, wheat, corn and bean etc. Features 1. Low energy consumption but large processing capacity, high efficiency. 2. Compact structure and reliable mechanical strength, space saving. 3. Low noise, no pollution, low energy consumption and easy operation and maintenance. 4. High pressure double crank to control the die opening and closing. 5.Running in a high automatization and intellectualization.