SRD electric gain mixer & separator adopts the way of rapid rotation and short distance interceptionto carry out rapid sample sorting. lt is characterized by extremely fast sampling speed and preciseinterception, which is suitable for the sampling ofsmall and medium grains and other grains,shortens the time required for manual sorting samples, avoids human errors, makes up for theshortcomings of the traditional gravity splitter that needs to be sampled for many times, and is ableto satisfy the needs of grain enterprises and laboratories such as grain inspections and storage.