Method for optimizing the energy balance in forming sections in machines for the production of fibrous webs, and forming section using control elements associated with dewatering units

US8323452B2 · kind B2 · utility

Assignee

• Voith Patent GmbH · DE

Inventors

• Thomas Ruehl · Wernau, DE
• Moritz Schmalenbach · Karlsruhe, DE
• Volker Schmidt-Rohr · Heidenheim, DE
• Marco Esper · Heidenheim, DE
• Oliver Kaufmann · Augsburg, DE

Key dates

• Filing date: Dec 21, 2011
• Grant date: Dec 4, 2012
• Expiry date: Dec 21, 2031

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21F9/003
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A forming section in a machine for producing a web of fibrous material includes a control and/or regulating system including a control and/or regulating device which is connected with at least one device for at least indirect acquisition of one value at least indirectly characterizing the dry content of the fibrous web in a transfer area from the forming section to a following function unit, with a device for input of a desired value for the target dry content, and with at least the control elements of an individual dewatering unit located prior to one of the last dewatering units, or the last dewatering unit inside the compression zone. The control and/or regulating device also includes a device for creating the control variables for controlling the individual dewatering units.