Patent ID: 8562498
Filing Date: 2013-10-22
Classification: B30B,D21C,Y10T

Abstract:
1. A press roll for washing or dewatering pulp comprising an axially-extending core, a mantle section attached around said axially-extending core, a plurality of adjacent perforated roll plates disposed around said mantle section and contracted thereonto, each of said plurality of perforated roll plates extending around the entire circumference of said press roll so that each of said plurality of perforated roll plates includes a pair of circumferentially-extending edges and a pair of end edges that have been joined by welding, each of said plurality of perforated roll plates comprising a plurality of mounting openings disposed between said pair of end edges and distributed around the entire circumference of said press roll, and a plurality of fixing pins corresponding to said plurality of mounting openings, each of said plurality of fixing pins being anchored to said mantle section and being surrounded by said corresponding plurality of mounting openings, whereby movement of each of said plurality of perforated roll plates relative to said mantle section in a welded circumferential direction of said press roll is prevented.