Disc filter having a suction device, and method for filtering fluids using a disc filter

A disc filter having a suction device, wherein the suction device comprises at least one suction bar per discoid filter body and a suction slit designed for suctioning the impurities of a filter cloth by flushing the filter cloth in a direction counter to a filter direction with filtrate, as well as a suction pump for suctioning the filtrate and the impurities, wherein the suction bar is movable radially to an axis of rotation of the disc filter, wherein the suction bar is made of stiff material and the spacing of the suction bar from the filter cloth is adjustable to a selected dimension resulting in an amount of deflection of the filter cloth, wherein the filter cloth comprises a pile fabric and wherein the width of the suction bar is smaller than the radius of the discoid filter body, wherein the suction bar can be displaced from a position that corresponds to the smallest radius of the discoid filter body to a position that corresponds to the largest radius of the discoid filter body.