B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 24/22 (2006.01) B01D 24/12 (2006.01)
Patent
CA 2073699
FLUME DISTRIBUTION SYSTEM WITH REMOVABLE BLOCK ABSTRACT OF THE DISCLOSURE A flume distribution system includes distributor having a stationary lower portion and a removable upper portion. The lower portion defines a duct which is in fluid communication with a flume and at least one underdrain lateral. The lower portion also includes an apertured end wall which abuts one of the underdrain laterals at a lateral inlet, and a stop is disposed within the duct and spaced from the end wall. The duct receives a removable orifice plate which is adapted to pivot between a slant inactive position abutting the stop and an upright active position restricting the aperture in the end wall. During backwash operations, water is introduced to the flume and enters each duct in the lower portion of the distributor, and the pressure of the incoming water causes the orifice plate to pivot from the slant position to the upright position, reducing the cross-sectional area of the aperture in the end wall and thereby regulating the velocity of backwash flow from the flume into the lateral inlet. The orifice plate is held in place by a pressure differential across the plate, but it returns to the slant inactive position during filtration when flow through the system is reversed. The upper portion of the distributor may be removed as needed to place different sized orifice plates within the ducts for obtaining uniform backwash distribution.
Brown Marvin A.
Leopold (f.b.) Company Inc.
Sim & Mcburney
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