APPARATUS FOR FITTING A TUBULAR FILTER ELEMENT IN A SHELL

摘要

An assembly of a tubular filter member (2) inside an envelope (5) surrounding the member includes a gasket (9) of elastomer or polymer material disposed at at least one of the ends of the filter member and of the envelope in between the outside surface of the filter member and the inside surface of the envelope. The outside surface of the filter member is provided over at least a portion of its surface area facing the gasket with roughnesses (11) or projections or hollows of sufficient size and number to prevent the filter element from sliding longitudinally relative to the gasket. Such an assembly is applicable to microfiltration, ultrafiltration and reverse osmosis.