Patent ID: 8083070

Claim:
A screening device for sorting granular material with at least one rod basket having a rotor rotatable about an axis and located in a screening housing with turbo elements distributed across a circumference of the rotor, the screening housing having inlets and outlets for screening gas, material to be screened, coarse material and fine material, whereby the outlet for a drawing-off of the screening gas flow charged with the fine material is an opening located at least one axial end of the rod basket in the screening housing comprising: a. at the screening housing opening for drawing off the screening gas flow charged with fine material, a cyclone-type eddy separator is attached, the cyclone-type eddy separator having a housing cone aligned with the axis of the rotor and having a smaller diameter of the cone attached to the screening housing opening and a larger diameter of the cone spaced away from the screening housing opening in a direction of the screening gas flow, so that the rod basket screening device and the separator form a compact unit, b. in a center of the cyclone-type eddy separator there is a submerged pipe for drawing off the screening gas flow freed from the fine material, and c. at a periphery of the eddy separator housing there is at least one opening for discharging the fine material.