Patent ID: 8579119

Claim:
A backwash filter comprising (1) a filter body provided in a casing and forming a cylinder jacket, wherein the casing and the filter body are rotatable about the axis of the filter body relative to one another and wherein the filter body separates a medium inflow space from a medium outflow space, and (2) a flushing agent discharge channel extending along a generatrix of the filter body, wherein said flushing agent discharge channel is movable relative to the filter body and can be brought into flow connection with the filter body across the entire length thereof and across the entire circumference thereof, with the formation of a stream of flushing agent flowing into the flushing agent discharge channel, and wherein flow connection always occurs only across a portion of the longitudinal extension of a generatrix of the filter body; wherein the flushing agent discharge channel is sealed off with gaskets against the filter body on both sides of the generatrix along which the flushing agent discharge channel contacts the filter body; wherein the filter body comprises a pressure plate, a support plate, and a filter material arranged therebetween; wherein the filter body is rotatable mounted relative to the stationary casing, wherein a feed inlet for medium to be filtered is provided in the casing in the direction of rotation of the filter body, immediately adjacent to the flushing agent discharge channel.