Abstract: The solids separated from a liquid in a centrifugal rotor are discharged through outlets of the rotor into a stationary chute surrounding the rotor and into which a flushing liquid is supplied. The chute is provided with an overflow outlet which coacts with the supply means for the flushing liquid to provide in the chute a layer of liquid of a thickness determined by the overflow outlet and rotating around the rotor, the discharged solids being received by and dispersed in this rotating layer and departing together with liquid over the overflow outlet.