Drive unit for centrifuge rotor of a centrifugal separator

US6578670B1 · kind B1 · utility

Assignee

• ALFA LAVAL CORPORATE AB · SE

Inventors

• Kjell Klintenstedt · Boo, SE
• Torbjörn Larsen · Uttran, SE
• Jan Setterberg · Huddinge, SE
• Stefan Szepessy · Stockholm, SE

Key dates

• Filing date: Jul 16, 2001
• Grant date: Jun 17, 2003
• Expiry date: Aug 2, 2021

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2320/42
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention refers to a drive unit (1) for a centrifuge rotor (2) of a centrifugal separator. The drive unit (1) includes a drive shaft (3), which is arranged to support said centrifuge rotor (2) and is rotatably journalled around an axis (z) of rotation, a casing (6), which forms an inner space for the drive shaft (3), and a drive motor shaft (9), which is provided outside the casing (6) and connected to the drive shaft (3) by means of a transferring member (11) which extends through a passage (12) in the casing (6). A shielding member (23) is provided inside the casing (6) in such a way that the part of the transferring member (11), which is located inside the casing (6) is shielded from the inner space, wherein the shielding member (23) forms a channel, which extends through the casing (6) and is shielded from the inner space of the casing.