Long-nip roll press with eccentric travel path of press shell

US4931142A · kind A · utility

Assignee

• J.M. Voith GmbH · DE

Inventors

• Karl Steiner · Herbrechtingen, DE
• Josef Mullner · Heidenheim, DE
• Christian Schiel · Heidenheim, DE
• Hans Flamig · Heidenheim, DE

Key dates

• Filing date: Mar 7, 1988
• Grant date: Jun 5, 1990
• Expiry date: Mar 7, 2008

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21F3/0218
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A long-nip press roll and a mating roll form an areal press nip with each other. The long-nip press roll has a flexible tubular press shell which is mounted by means of two support disks on a stationary support member which extends through the inside of the press shell. Within a hydraulic pressure chamber provided on the supporting member is a radially displaceable press shoe which can press the press shell against the mating roll. Support member, pressure chamber and mating roll are arranged symmetrically relative to a press plane. The slide surface of the press shoe which contacts the press shell is arranged offset with respect to the press plane in the direction opposite the direction of travel of the press shell. The axis of rotation of the press shell and its two support disks is also arranged offset out of the press plane in the direction opposite the direction of travel of the press shell.