Patent · US Active

Apparatus for washing and dewatering pulp

US8187425B2 · kind B2 · utility

2Cited by

6References

12Claims

0Family size

Assignee

Metso Paper Inc. · FI

Inventors

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

Key dates

Filing date	Dec 11, 2008
Grant date	May 29, 2012
Priority date	—
Expiry date	Feb 10, 2029

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 including a pair of rotatable press rolls with a permeable outer surface in a casing including a vat in which the press rolls are installed is provided. A gap is provided between the vat and the press rolls as well as means for feeding the pulp into the gap between the rolls and the vat includes a first segment partially enclosing the first roll and a second segment partially enclosing the second roll, and casing members for each segment are pivotable about axes of rotation to open and close the casing, and the distance between the axes of rotation is less than the sum of the outer diameter of the two press rolls.

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