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:
Mar. 05, 2019
Filed:
Dec. 18, 2014
Alfa Laval Corporate Ab, Lund, SE;
Sven-Åke Nilsson, Gnesta, SE;
ALFA LAVAL CORPORATE AB, Lund, SE;
Abstract
A method for manufacturing a separation disc, starting from a metal sheet blank with a top side and a bottom side, applying on said metal sheet blank extra metal material in positions on its top side, by means of welding, placing the metal sheet blank on a mandrel including a truncated conical support surface with recesses corresponding to spacing members on the completed separation disc, with the bottom side facing said truncated conical support surface, aligning the metal sheet blank so that the positions of the extra metal material after the pressing will correspond to the recesses, flow forming the metal sheet blank by means of a roller and the mandrel, the roller forming the separation disc over the mandrel completing a separation disc with spacing members on said bottom side. A separation disc for a centrifugal separator is made of a metal material and adapted to be compressed in a stack of separation discs inside a centrifugal rotor for separating a liquid or liquid/solid mixture. The separation disc has a truncated conical shape with an outer surface and an inner surface and a plurality of spacing members extending a certain height above the inner surface for providing interspaces between mutually adjacent separation discs in said stack. The thickness of the separation disc and the height of the spacing members have a ratio of at least 1 to 1.