The Positive Type of Gravity Separator is a new gravity machine of positive pressure independently developed by our company. The structure of the equipment is optimized and the capacity have greatly improved basis on previous machine. Blowing gravity table produce specific gravity segregation phenomenon according to air movement and vibration, through adjusting wind pressure, amplitude and other technical parameters, larger proportion materials sink down and smaller proportion drift upward, then different proportion finished products discharge from corresponding outlets. gravity separator can effectively remove mildew grain, Shrivelled seeds, empty seed, moth eaten grain, immature grain and other impurities, widely used in wheat, corn, watermelon seed, sunflower seed, pumpkin seed, all kinds of beans and various oil crops selection processing.