1. Three moving modes i.e. circumferential, elliptical and rectilinear are combined, resulting in good sifting effect; 2. Belt is adopted for driving the screener hull. The bias weights are balanced and low noise. The support at the tail of screener hull is an improved elastic support with less vibration; 3. The strengthened base ensures that equipment run more smoothly. And the hanging structure can be used according to the actual site conditions so as to meet client’s requirements of retrofit; 4. The improved steel cable structure avoids the wearing of steel cable; 5. The adoption of one body or combined screener cover structure guarantees lower screener cover’s weight, stronger rigidity and better sealing; 6. Capable of sifting and classifying of mash or pellet feed. It is also can be used for cleaning of raw materials and classifying of semi finished products after secondary grinding of large and medium feed mills.