BOX-LIKE BLENDING CHAMBER WITH BARRIER ELEMENTS TO PRODUCE UNIFORM FLOW OF PAPERMAKING STOCK

摘要

Apparatus for spreading the flow of papermaking stock so as to establish flow having uniform velocity across the width of a relatively wide conduit, which apparatus includes branch tubes for feeding the flow from a tapered header to the top or bottom wall of a boxlike blending chamber where the streams from the branch tubes impinge against the opposite wall. Barrier elements are disposed in the area of impingement in the blending chamber in a manner whereby they isolate the streams entering the blending chamber from the branch tubes so as to obtain a more uniform velocity profile. The barrier elements which are disposed between the center lines of the adjoining tubes extend between the top and bottom walls, and also extend from a point preceding the upstream side of the branch tubes to a point along the stock flow path through the blending chamber at least beyond the center lines of the branch tubes.