Abstract: A suction filter for the filtration of particulate matter from fluids has a housing with an inlet opening, a bottom cover, a filter plate lying over the bottom cover, and with a wiper-cutter capable of rotation over the filter plate. The wiper-cutter comprises arms which carry the filter cake into the middle of the filter plate where a central outlet opening is connected to an outlet line in the bottom cover. A valve closes off the outlet line. In the housing or in the outlet line is a vertically adjustable drill, which cuts a hole through the filter cake to permit the cake cut and carried inward by the wiper-cutter arms to fall into the outlet line.

Abstract: A fluid filtration apparatus including a filter packet enclosed by a container and comprised of a filtering element arranged on a hollow shaft through which filtrate is removed. The filtration apparatus also includes a seal arrangement to prevent filtrate from reentering into the space containing the fluid to be filtered. The seal and/or the part including the seal surface can be moved to form a gap to prevent damage of the seal during cleaning of the filtering elements.