Patent ID: 7029584
Filing Date: 2006-04-18
Classification: B01D

Abstract:
1. A device for filtering liquids, comprising: at least two shafts which are parallel to each other or at an acute angle to each other; each said shaft carrying a stack of filtering disks which extend perpendicularly to the shaft axis and which are connected to the shaft in a rotationally fixed manner; the disks of one disk stack engaged in the spaces between the disks of an adjacent disk stack; at least one of the shafts being drivable; at least one of the shafts being provided with bores; at least some of the disks carried by the shafts having internal channels therein, said channels being fluidly connected to the inside of their respective hollow shaft; wherein between each pair of adjacent disks of a shaft is a ring-shaped distancing element comprising a support ring and two sealing rings; each said sealing ring being located between the support ring and a disk neighboring the distancing element so that the distancing element is sealed against said neighboring disk; the support ring comprising a relatively hard, non-resilient material; said shafts and/or associated said support rings having projecting parts which cause centering of the support rings relative to the respective shafts; the shafts and/or support rings having grooves which create a rotationally fixed connection between the shafts and their respective support rings; each said support ring being over-dimensioned over the respective shaft to create a channel between the inner surface of the support ring and the outer surface of the shaft, said channel extending at least over a part of the length of the respective shaft.