Vacuum washer drum having a center and end drains and method for draining

Abstract

A vacuum drum washer including: a cylindrical drum including a screen and deck defining an exterior cylindrical surface; a plurality of outer filtrate channels disposed inward of the screen, the outer filtrate channels extending along a longitudinal axis of the drum and substantially an entire length of the drum; an radial array of filtrate end conduits extending radially inward from the outer filtrate channels towards a rotational axis of the drum, the radial filtrate conduits have an inlet positioned at a first end of the drum and draining filtrate from the outer filtrate channels; a filtrate chamber at the first end of the drum and receiving filtrate discharged from the end conduits, and an array of radial filtrate drainage conduits coupled to receive filtrate from the filtrate channels, the drainage conduits each having an inlet proximate to the filtrate channels, the inlets are arranged between a center of the drum and a second end of the drum, and the radial drainage conduits directing filtrate to the filtrate chamber.

Dependencies are inferred from the claim text.