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. 31, 1987
Filed:
Nov. 19, 1985
Zoltan Foldhazy, Tumba, SE;
Alfa-Laval Separation AB, Tumba, SE;
Abstract
The present invention relates to a centrifugal separator of the kind comprising a rotor (1), which is supported by a vertical driving shaft (2), a stationary casing (3), which surrounds the rotor (1) and has a bottom opening (5) through which the driving shaft (2) extends, a frame (4) which supports the casing (3) and is arranged to support radially in a resilient manner a radial bearing (6) for the driving shaft (2), and a mechanical seal with two sealing rings abutting axially against each other, one rotatable (11) and one non-rotatable (13), to seal the interior of the casing (3) from connection with the space surrounding the radial bearing (6) via the opening (5) in the bottom of the casing (3). In order to decrease the stresses on the radial bearing (6) and to provide for a more reliable sealing between the casing (3) and the housing of the mechanical seal, the non-rotatable sealing ring (13) is radially fixed relative to the casing (3), whereas the rotatable sealing ring (11) is arranged during operation to be moving radially relative to the non-rotatable sealing ring (13).