Patent ID: 6303004
Filing Date: 2001-10-16
Classification: D21F

Abstract:
A stock inlet of a paper machine comprising:at least one stock suspension supply;a diffusor block having a plurality of tubular elements;dividing elements which extend across a width of the machine;a stock inlet aperture having a top wall and a bottom wall, and said dividing elements being located between said top wall and said bottom wall, whereby a plurality of suspension conduits are formed, which extend across the width of the machine, and wherein said stock inlet aperture is positioned one of adjacent one wire and between two wires;said suspension conduits include a first region and a second region disposed downstream of said first region, with respect to a stock flow direction, wherein said first region is formed by flat boundary surfaces which extend across the width of the machine and converge in the stock flow direction, and wherein each of said dividing elements has a sharper convergence of surfaces in said second region than in said first region;said plurality of tubular elements being associated with a turbulence generating element to produce secondary turbulence currents in partial suspension flows conveyed through said plurality of tubular elements, wherein the secondary turbulence currents overlap a primary current of each partial suspension flows, and wherein all of said dividing elements have a contour and an arrangement so that said second region for each said suspension conduit is of equal length and has an identical cross sectional course.