Patent ID: 6234200
Filing Date: 2001-05-22
Classification: B01D,C02F,Y10T

Abstract:
An apparatus for controlling liquid flow from a holding vessel to a discharge line wherein insoluble material received into the vessel with liquid is intended to be retained in the vessel, the apparatus having:(i) a wall within which an interior cavity is defined for connection to the discharge line at a location below the surface of liquid in the vessel,(ii) apertures spaced along the wall means for admitting liquid from the vessel into the interior cavity,(iii) wall elements between the apertures providing inclined ramps which confront one another and between which pockets are provided for receiving the liquid in a quiescent state whereby:(a) movement upwardly of buoyant components of the insoluble material towards the top of the vessel occurs with deflection of the buoyant components by upwardly directed ramps, and(b) movement downwardly of non-buoyant components of the insoluble material towards the bottom of the vessel occurs with deflection by downwardly directed ramps, and(iv) the apertures being configured and dimensioned to restrict and control flow of liquid into the interior cavity whereby under surges of flow into the vessel there is substantial resistance to liquid discharge through the discharge line.