Hinged screen plate for drum pulp washer and method for cleaning the plate
US7976682B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 2009 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Nov 21, 2029 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C9/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.