Patent ID: 6935510

Claim:
Air separator for separating material to be separated, which is suspended in a gas flow, into coarse material and fines, using a separator wheel, comprising blades in the area of an outer circumference and rotating in a separation space, and blade channels through which gas with fines suspended in it flows radially from the outside, while the coarse material is deflected before it reaches the inner ends of the blade channels, wherein the flow of fines both through the blade channels and, after leaving the blade channels, into the area of an outlet from the separation space is guided by force in a plurality of layers following each other in the direction of the said axis of rotation of the said separator wheel, said separator wheel rotates in a separation space, which is enclosed by a separator housing, which is a helical housing in the view parallel to the said axis of rotation of the separator wheel, with which an inlet for material to be separated and an inlet for separating gas are associated in a diameter plane, while an outlet for coarse material is associated with the separator housing in another diameter plane opposite the two inlets, wherein said two diameter planes are offset in relation to one another in the direction of the axis of rotation of the separator wheel, and the separation space is divided by diaphragms, which are circular arc-shaped in a view in the direction of the separator wheel, into a plurality of sections, which are located one behind another in the direction of flow and by which the material is separated in a stepwise manner into a fines component to be sent to said fines outlet and a coarse material component to be sent to said coarse material outlet.