Device for continuously dewatering a fiber web

US4908102A · kind A · utility

Assignee

• J.M. Voith GmbH · DE

Inventors

• Heinz Zag · Heidenheim, DE
• Albrecht Meinecke · Heidenheim, DE
• Otmar Kolb · Königsbronn, DE
• Josef Mullner · Heidenheim, DE
• Elemer Csordas · Heidenheim, DE
• Dieter Egelhof

Key dates

• Filing date: Aug 16, 1984
• Grant date: Mar 13, 1990
• Expiry date: Aug 16, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S162/07
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

This device, preferably formed as a dual paper machine, has according to a preferred embodiment two endless screens, mainly a lower screen (21) and an upper screen (22). The lower screen (21), on which is formed a paper web, and the upper screen (22) are moved together in the lower part of a dehydration cylinder (25) arranged in the upper screen. Both screens (21,22) are unrolled from the rising lower quadrant of said cylinder (25) and are laid on the upper part of the support cylinder (26) arranged in the lower screen (21). The bandage of the dehydration cylinder (25) has hollows which absorb water from the screens along their arcs of contact with the cylinder and which project the water towards the inside of the loop formed by the screens of the cylinder. In the feed direction of the screens and downstream of the support cylinder (26), there is arranged a receiving container (36) for the projected water. The container has a curved covering wall (40) which extends opposite the feed direction of the screens up to the interstice formed between the dehydration cylinder (25) and the screens (21,22). The reception container (36) is divided into two chambers (44,45) which extend transve…