D - Textiles – Paper – 21 – D
Patent
D - Textiles, Paper
21
D
D21D 5/02 (2006.01) B01D 29/35 (2006.01) B07B 1/20 (2006.01)
Patent
CA 2140134
A hydrodynamic device for generating negative pressure excursions in a pulp slurry during fine screening, includes at least one half-foil member (123) disposed on a substantially cylindrical outer surface of a rotor (121). The rotor (121) is mounted within and co-axial with a substantially cylindrical screen (95) having a circumferentially continuous apertured zone to define an annular screening chamber (93) between the rotor (121) and the screen (95). The half-foil member (123) is collectively at least axially co-extensive with the apertured zone and has a leading edge which, also collectively, is inclined at a spiral angle (33) relative to the axis of the rotor (121) such that, in one embodiment, during rotation, the leading edge of the half-foil member (123) conducts large particles downwardly through the screening chamber (93). A selection of hydrodynamic foil configurations is provided in order to adapt to a wide range of pulp types and screening conditions.
Luthi Oscar
Young Douglas L. G.
Gl&v Canada Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
LandOfFree
Screening apparatus for papermaking pulp does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Screening apparatus for papermaking pulp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screening apparatus for papermaking pulp will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2072353