Hinged screen plate for drum pulp washer and method for...

Details Hinged screen plate for drum pulp washer and method for... Hinged screen plate for drum pulp washer and method for...

2011-07-12

2011-07-12

Halpern, Mark (Department: 1741)

Paper making and fiber liberation

Apparatus

Apparatus repair, cleaning or conditioning

Reexamination Certificate

active

07976682

ABSTRACT:
A pulp washer including: a cylindrical assembly of trays to receive pulp, wherein the assembly rotates the trays through at least one wash stage; a housing having a header to direct pulp to the trays and the at least one wash stage, wherein the housing has at least one access port aligned with one or more of the trays; a screen plate in each tray of the assembly, wherein the screen plate has apertures sized to retain pulp fibers and allow liquid to pass through the plate, and a screen hinge attached to a side edge of the screen plate and to the tray, wherein the screen plate pivots about the hinge to allow a cleaning spray to be applied to an outer screen plate surface and a back screen plate surface.

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patent: 2008/0087391 (2008-04-01), Grace

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