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QSC-7 Blowing Style De-stoner is to separate stone, clod by adjusting wind pressure, amplitude and other parameter, larger proportion material stone will sink down, move bottom to up under stress of vibration friction;smaller proportion material moves up to bottom. With internal fans, no need to install wind net system, The Fans and vibration system are equipped different motors, noninterference adjustment; vibration part motor with a transducer, which using different frequency for small particles of material (millet), medium materials (mung bean, soybean), large granular materials (kidney beans, broad beans) to achieve the best good effect to remove stone.