TFXH series of self-circulation aspirator is specially designed for separating low density of hull dust and impurities from the grains (such as wheat, corn, barley, oil etc.). It can be used in the field of grain warehouse, flour milling, processing of corn, oil, fodder, starch and alcohol. It can be installed alone or combined with a vibration sieve, a plane-rotary sieve or beating machine. The biggest feature of this machine is that it comes with its own blower, and the blower can separate light impurity from the grains.