Patent ID: 6117322
Filing Date: 2000-09-12
Classification: B01D

Abstract:
A dynamic filter assembly comprising:an inlet;an outlet;a housing defining a fluid flow path between the inlet and outlet;a filter element having a central axis disposed within the housing in the fluid flow path and dividing the fluid flow path into a process fluid flow path communicating with the inlet and a permeate fluid flow path communicating with the outlet, the filter element including at least one filter having a generally planar upstream side extending substantially perpendicular to said central axis and a downstream side and a mechanism disposed downstream of the filter in the permeate fluid flow path to restrict permeate fluid flow to radially vary a permeability of the filter element such that said permeability generally decreases with increasing radial distance from the central axis of the filter element to resist preferential fouling of a radially outer portion of the filter element; anda member disposed within the housing facing the filter element, wherein said member is rotatably mounted allowing relative rotation of the member in relation to the filter element to resist fouling of the filter element.