Liquid filtering apparatus

Details Liquid filtering apparatus Liquid filtering apparatus

B - Operations, Transporting

01

D

B01D 24/46 (2006.01) B01D 24/48 (2006.01) B01D 29/15 (2006.01)

Patent

CA 2204414

Liquid filtering apparatus (10) including a chamber (11) having a filtering membrane (55) therein. The filtering membrane (55) is coupled to a valve member (27) which controls flow of fluid through an inlet duct (21). In normal filtering, liquid is directed by the valve member (27) to one side (59) of the chamber (11) to pass through the filtering membrane (55). When pressure builds up in the chamber side (59) due to the membrane (55) becoming blocked with debris, a force is applied by the membrane (55) to the valve member (27) to reverse the supply of liquid to the chamber (11) to cause an opposite flow of liquid through the membrane (55) for cleaning thereof.

La présente invention concerne un appareil de filtrage de liquide (10) comprenant une chambre (11) contenant une membrane filtrante (55). La membrane filtrante (55) est couplée à une vanne (27) régulant le débit du fluide via un conduit d'amenée (21). En filtrage normal, le liquide est envoyé par la vanne (27) dans une partie (59) de la chambre (11) de sorte qu'il traverse la membrane filtrante (55). Lorsque la pression dans cette partie de chambre (59) augmente du fait de l'obstruction de la membrane (55) par des débris, la membrane (55) applique une force sur la vanne (27) de sorte que l'amenée de liquide dans la chambre (11) soit inversée et qu'un écoulement en sens inverse du liquide au travers de la membrane (55) soit induit et permette de nettoyer celle-ci.

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