Disc sector

Abstract

A sector for a disc-shape filter including a substantially sector-shape element having a pair of opposed sides and a pair of opposing edges including a leading and a trailing edge converging towards each other and terminating in a neck at one end and diverging in the other direction to terminate in an arcuate outer edge. An arrangement of flow paths is on each side and positioned to direct filtrate toward the neck. The element is adapted to be interconnected with a plurality of similar sectors to form a disc-shaped filter and adapted to be interconnected with a source for pressure differential so that when a filter medium is mounted thereon, filtrate collected therethrough will be directed to the neck for removal. The flow paths are in a predetermined non-symmetrical arrangement of channels in the outer surface of each side with the channel arrangement adjacent the leading edge being different from the channel arrangement adjacent the trailing edge. A greater number of channels end adjacent the arcuate outer edge between the center line of the element and the trailing edge than between the center line of the element and the leading edge. The channels are of predetermined size to facilitate accommodations of different amounts of filtrate on different portions of the element and maintain a predetermined pressure differential condition as the element passes through the material to be filtered and to provide streamline and low turbulence flow through the channels with controlled direction and without significant back-flow between channels.

Dependencies are inferred from the claim text.