Abstract: The invention relates to a control head constructed for use with rotary filters for controlling separation of filtrate from the filters into adjustable filtrate zones. It is characterized by the fact that at least one filtrate separator (7) is provided, which includes a mechanism for diverting of the flow (9) from axial flow in channels that are axially arranged with respect to the axis of the filter to radial flow without causing entrainment or formation of air bubbles in the diverted flow.

Abstract: A disc filter for separation of liquids from suspensions, in particular fiber stock suspensions, having several filter elements, in particular sector-shaped filter elements, which have a frame and filter areas mounted on both sides, over which a filter medium is mounted, with the filter areas having a lower-lying and higher-lying sections that form area filtrate channels, and having a center core which is provided with core filtrate channels. The filter elements contain collecting channels that receive and collect filtrate flow from the area filtrate channels formed by the lower-lying and higher-lying sections for delivery of the collected filtrate.

Abstract: The invention refers to a rotary filter with a device for separating a liquid-solid mixture, particularly a pulp suspension, with several separate zones, at least one of which is of variable design. It is mainly characterized by the variable design for the length and/or position of the atmospheric zone and the vacuum zone.