Working Principle of Animal feed/poultry feed/aquatic feed/wood pellets rotary screener

The screener with inclination of 4° is driven by drive box, the moving track is circumferential at the inlet part, then gradually into elliptical moving mode in the same direction of screener length, finally at the outlet part moves in nearly rectilinear mode.  Under the action of circular motion at the feeding end of screener, products fed concentrated are evenly spread across the full width of screen quickly and sized automatically, thus making the products with smaller size on the lower layer pass through the screen quickly, whereas making products with larger size move towards the discharging end. In the process of movement, there is no stir and vertical bounce, so the smaller pellets always keep tight close to the screen face and can pass through the screen at any time. At the discharging end, the movement of screener body is approximately in reciprocating rectilinear motion. It makes the screening action gradually become weaker and thus makes pellets which are larger than screen mesh size quickly move towards the outlet until they are discharged out of the machine and the complete screening of product is finished. In the screening process, the constantly bouncing elastic small balls bump against the screen and efficiently prevent products from blocking the screen mesh and ensure a high efficient screening.