Fluid filter device

摘要

There is disclosed a fluid filter device. The fluid filter device comprises: a primary filter section having a first porous section; and a secondary filter section having second porous section; wherein: (i) the primary filter section and the secondary filter section are in fluid communication with one another, and (ii) the first porous section has a greater porosity than the second porous section. There is also disclosed a fluid isolation device for isolation an exterior fluid from a surface of an enclosure containing interior fluid. The device comprises a sleeve element movable between: (i) a retracted portion in which exterior fluid contacts the surface of the enclosure, and (ii) an extended position in which exterior fluid is isolated from contacting the surface of the enclosure. A distal portion of the sleeve element is configured to actuate a backwash element configured to backwash the interior fluid from the enclosure when the sleeve element is in the extended position.

主权项

1. A fluid filter device comprising:
a primary filter section having a first porous section; a secondary filter section having a second porous section; a first cleaning element to remove fouling materials from the first porous section of the primary filter section; and a fluid backwash valve element operable between: (i) a closed position in which fluid flow is in a direction from the first porous section to the second porous section, and (ii) an open position wherein at least a portion of fluid flow is in a direction from the second porous section to the first porous section, wherein: (i) the primary filter section and the secondary filter section are in fluid communication with one another, and (ii) the first porous section has a greater porosity than the second porous section, and wherein the backwash valve element is configured to be moved to the open position upon being contacted by the first cleaning element.