The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2001
Filed:
Jul. 01, 1999
Erwin Binder, Heidenheim, DE;
Karl-Heinz Beuermann, Heidenheim, DE;
Voith Sulzer Papiertechnik Patent GmbH, Heidenheim, DE;
Abstract
Mixing and recirculation cycling system and method, for use in the stable section of a paper or cardboard machine. The system includes a dilution water-regulated headbox, a backwater tank having a backwater inlet and at least one stock suspension inlet adapted to provide for the mixing of stock suspensions with the backwater. Also provided is a mixing tank operatively connected to the backwater tank, at least one backwater inlet operatively connected between the backwater tank and the headbox, and a pressure-increasing device operatively connected between the mixing tank and the backwater tank. The method includes feeding backwater from the wet section into a backwater tank, feeding the return flow into a mixing tank, mixing the return flow in the mixing tank, injecting the return flow from the mixing tank into a lower region of the backwater tank via a pressure increasing device, mixing the return flow with the backwater and added fresh stock, and feeding the return flow to the headbox via a separation device.