Patent ID: 6419842
Filing Date: 2002-07-16
Classification: F26B

Abstract:
A filtering device, comprising a vessel with at least two filter element groups arranged therein concentrically inside each other around a common axis of rotation, said filter element groups including filter elements arranged in parallel to the axis of rotation, which are held by carrying structures attached at hollow shafts arranged in the axis of rotation, drainage channels from the filter elements extending through said hollow shafts, wherein each filter element group includes a plurality of subgroups each being formed by at least two filter elements, wherein each filter element includes a carrying tube and a plurality of stacked filter disks attached thereon at mutual distance and drained through said carrying tube, the carrying tubes of the filter elements of a filter element subgroup being commonly attached on consoles which in turn are mounted on the carrying structure, wherein a drainage channel extends from the interior of each filter element through the carrying structure into the hollow shaft which outside of the vessel is connected to a filter outlet, each said hollow shaft being connected to an individual driving means for rotating said hollow shafts in opposite directions during the filtering operation.