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:
Dec. 25, 2012
Filed:
Nov. 04, 2008
Jorma Tapani Lehtonen, Mänttä, FI;
Heikki Manninen, Vilppula, FI;
Jorma Tapani Lehtonen, Mänttä, FI;
Heikki Manninen, Vilppula, FI;
Sulzer Pumpen AG, Winterthur, CH;
Abstract
The present invention relates to a centrifugal pump, a shaft sleeve and a stationary seal member for a static seal used in connection with a dynamic sealing of a centrifugal pump. The invention relates to a static seal the clearance of which may be adjusted while the pump is running. Especially the invention discusses the novel structure of such a static seal. A characterizing feature of a centrifugal pump comprising a pump housing (), a shaft (), an impeller attached on the shaft, a dynamic sealing () having a sealing chamber () and a repeller () mounted on the shaft (), and a static seal () arranged in a shaft space () behind the dynamic sealing () as seen from the direction of the impeller, said static seal (') comprising an axially adjustable seal cover () including a stationary seal member; and a rotary seal member arranged on the shaft (), is that the seal cover () is provided with a flexible seal member (), whose counter member () is arranged in connection with a shaft sleeve () arranged on the shaft ().