US 5,674,392 A · Treatment assembly for treating a fluid by filtering and centrifuging

Abstract

The invention relates to a fluid treatment assembly comprising a filter (4) which itself comprises filtering elements (5) and a cleaning device (12) for periodically cleaning each filtering element including a conduit (17) for the evacuation of the cleaning fluid filled with impurities resulting from the cleaning, the treament assembly further comprising a centrifuging device which itself comprises a rotary enclosure (37) connected to a fluid admission conduit (28). According to the invention, the filtering elements (5) and the enclosure (37) are contained in a single casing (1A-1B), while the admission conduit (28) is directly connected (29-30) to the conduit (17) for evacuating the cleaning fluid. The invention finds an application in the construction of a compact and reliable assembly.

Claims17

Dependent claims

A treatment assembly for treating a fluid comprising:

a filter device having at least one filtering element;
said filtering element including an inlet for fluid to be filtered, an outlet for filtered fluid, and a filtering surface;
a centrifuging device including a rotary enclosure having an admission conduit, an outlet for purified fluid, and means for rotating said rotary enclosure;
and
a cleaning device for cleaning said at least one filtering element, said cleaning device including:
a motor driven rotary distributor, for periodically isolating one part of the filtering surface in order to allow counter-current cleaning thereof by clean counter-current fluid flowing through said at least one filtering element, the rotary distributor including an evacuation conduit which communicates with said admission conduit for feeding the counter-flow fluid to be purified to the centrifuging device.

3 more elements

A fluid treatment assembly comprising:

casing means having a fluid to be filtered inlet, a filtered fluid outlet, and a centrifuged fluid outlet said inlet and said fluid outlet defining, in part, a first internal fluid path therebetween and said inlet and said centrifuged fluid outlet defining, in part, a second internal fluid path therebetween;
centrifuging means mounted rotatably in said second fluid path for centrifuging a counter current fluid having filtered impurities therein and for discharging the centrifuged counter current fluid to said centrifuged fluid outlet;
filter means having a filtering surface for filtering impurities from said fluid to be filtered as it travels along said first internal fluid path and for temporarily accumulating on said filtering surface the impurities removed from the fluid to be filtered;
and
rotatable distributor means mounted to said filter means for periodically isolating said filtering surface from said first internal fluid path to permit a counter flow of filtered fluid to pass through said filtering surface to carry the filtered impurities along said second internal fluid path to said centrifuging means;
said first internal fluid path and said second internal path being sufficiently isolated from one another by said rotatable distributor means to substantially prevent fluid leakage from said centrifuging means to said filter means as said fluid to be filtered travels along said first fluid path.

3 more elements

Dependencies are inferred from the claim text.

Treatment assembly for treating a fluid by filtering and centrifuging

Life of this patent

Treatment assembly for treating a fluid by filtering and centrifuging

Life of this patent

Abstract

Claims17