Patent · US Active

Apparatus for washing and dewatering pulp

US8337669B2 · kind B2 · utility

2Cited by

5References

12Claims

0Family size

Assignee

Metso Paper Inc. · FI

Inventors

Fredrik Pontén · Uppsala, SE
Johan Bylander · Sundsvall, SE
Jörgen Lundberg · Sundsvall, SE

Key dates

Filing date	Dec 11, 2008
Grant date	Dec 25, 2012
Priority date	—
Expiry date	Dec 11, 2028

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21C9/18
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Apparatus for washing and dewatering pulp comprising rotatable press rolls including permeable outer surfaces and a casing comprising a vat in which the rolls are installed are disclosed. A feed for feeding the pulp through the gap between the vat and the outer surfaces of the press rolls is provided and the vat includes a vat segment providing at least one compartment between the vat segment and the casing, the at least one compartment extending along the longitudinal extension of one of the first and second rotatable press rolls and a pressure device to maintain the pressure in the at least one compartment corresponding to the pressure in the gap.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.