Abstract: Filter apparatus for continuously separating filterable mixtures, such as fluid-solid or fluid-fluid mixtures, includes a closed loop tubular enclosure having an inlet, at least one filter section spaced downstream from the inlet, and a plurality of longitudinally spaced driving disks within the enclosure mounted for movement downstream therearound, the driving disks preferably being driven downstream through the enclosure by fluid flow from the inlet to the filter section for discharging at least a portion of the fluid. A backflow preventing portion of reduced inner cross section area may be provided upstream from the inlet and a residual material outlet may also be provided.

Abstract: Apparatus for separating immiscible liquid mixtures, such as oil-water mixtures, includes a closed loop tubular enclosure having a liquid mixture inlet and independent liquid outlets spaced from each other and from the inlet. The inner cross section area of the enclosure has a first reduced portion adjacent the first outlet and a second further reduced portion adjacent the second outlet. Selectively absorbent elements are driven around within the enclosure, preferably by the pressurized liquid mixture, for selectively absorbing the liquid mixture and selectively discharging one of the liquids through the first outlet upon mild compression by the first reduced portion and the other of the liquids through the second outlet upon higher compression by the second further reduced portion. A third outlet with a still further reduced portion may be provided for discharging the remaining portion of the other liquid.