Patent · US Expired

Water draining device

US7189309B2 · kind B2 · utility

0Cited by

23References

14Claims

0Family size

Assignee

Voith Paper Patent GmbH · DE

Inventors

Karl Steiner · Herbrechtingen, DE
Robert Wolf · Woodbury, US
Hans Prinzing · Heidenheim, DE
Gerhard Kotitschke · Steinheim, DE
Jurgen Banning · Düren, DE

Key dates

Filing date	Sep 24, 2003
Grant date	Mar 13, 2007
Priority date	—
Expiry date	Apr 9, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S162/07
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Water draining device for a paper machine or the like, in particular for a felted press of such a paper machine, including a receiving tank extending at least essentially over the machine width. The receiving tank includes a first chamber that receives arriving water and is under ambient pressure, and a second chamber that is connected to the first chamber and is under vacuum, into which the water collecting in the first chamber is aspirated and from which the water is eventually drained. A water receiving device of improved efficiency is also provided by forming a water receiving device by at least one suction channel projecting into the wedge-shaped area between the upper press roll and the dewatering belt, and extending transverse to the pulp web, which suction channel is connected to a source of reduced pressure.

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