According to the different gravity and suspension speed in-between the materials and heavy impurities such as sand and stones, combined the wind force through the suction pipeline acts on inclined moving screen, thus the materials are separated properly from the heavy impurities such as sand and stones.
This machine can be used to aspirate and screen out the impurities inside the various seeds for planting purpose such as wheat, corn, beans&pulses etc also to be used for cleaning in commodity grain, meantime it can be used as the sizing machine.