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 has greatly improved basis on previous machines. Blowing gravity table produces a specific gravity segregation phenomenon according to air movement and vibration, through adjusting wind pressure, amplitude, and other technical parameters, a larger proportion of materials sink down and a smaller proportion drift upward, then different proportions of finished products discharge from corresponding outlets. gravity separator can effectively remove mildew grain, Shrivelled seeds, empty seeds, 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.