Liquid Filter System
AssigneeEsco Process (Asia Pacific) Pte Ltd
InventorTeng Hee Leow
Life of this patent
Estimating the term…
Abstract
A filter system is described which comprises a vessel (10) containing a plurality of sets of discs (41). Each set of discs (41) comprises a number of discs (40) stacked one above the other. The discs (40) have grooves (50) on their opposite sides so that media to be filtered passes through the grooves and contaminants in the media are prevented from passing through the grooves or trapped by the grooves. A backwash system (25) is provided for supplying air to force liquid in the opposite direction through the grooves to wash any contaminant out of the grooves. An air vent (26) is provided for allowing compressed air to escape from the vessel (10) and an outlet (16) is provided for discharge of contaminant.
Claims15
A liquid filtration system comprising:
- a plurality of discs, each having a surface, an inner periphery and an outer periphery, a hole in each disc defining the inner periphery;
- a support for supporting the discs one above another;
- a plurality of grooves in the surface of each disc extending form the inner periphery to the outer periphery;
- a vessel for containing the discs;
- an inlet in the vessel for liquid to be treated so the liquid flows through the grooves in one direction, preventing or trapping contamination in the liquid from passing through the grooves in one direction;
- a filtered liquid outlet for providing filtered liquid from the vessel;
- a backwash system for providing washing gas for flow in the opposite direction to wash a drain off any retained contaminant out of the grooves;
- and
- a vent system to remove trapped gas after backwash by allowing liquid to enter the vessel and push the gas out of the vessel through the vent system whilst the filtered liquid outlet remains closed.
Dependencies are inferred from the claim text.