Abstract: Rotary vacuum filter for filtering a suspension of, for example, yeast or some other plant cell material, comprising a drum (1), a trough (3) for the suspension positioned under the drum and a doctor knife (5) for removing the filter cake which is produced. The doctor knife is attached to or adjacent to one of the upper edges (6) of the trough (3).According to the invention the trough (3) can be revolved around the geometric axis (10) of the drum (1), whereby the immersion angle (.alpha.) is infinitely adjustable, and the doctor knife (5) can be moved towards and away from the center of the drum (1).

Abstract: A method and device for filtering a suspension (14), for example of yeast or other plant cell material, on a rotary vacuum filter (10), beneath which a trough (4) containing the suspension (14) is located. In order to improve the balance between dipping zone and drying zone, according to the invention a take-off knife (1) for taking off the filter cake (8) resulting from the filtering is attached to the trough (4). The level of the suspension (14) is maintained constant, and the trough (4) is moved by means of a feeding device (7) to the center of the drum (12) of the vacuum filter (10) while the drum is rotating.