1. this Blow Type Specific Gravity Cleaning Machine is to produce proportion segregation phenomenon under stress of aerodynamic and vibration friction of graininess material.

2. by adjusting wind pressure, amplitude and other parameters, larger proportion material will sink down and move bottom to up under stress of Vibration friction; smaller proportion material moves up to bottom.

3. this machine is to remove blighted seed, budding seed, damaged seed (by insect), rotten seed, deteriorated seed, moldy seed, non-viable seed, seed with black powder sick and light impurities from wheat, corn, paddy, sunflower seed, melon seed, legume, etc.

4. at the same time, there is an angle on the right of vibration surface; the stone can be separated.