Alfa Laval Corporation Ab

Jan Setterberg

Kjell Klintenstedt

Torbj&ouml;rn Larsen

Nils-Gunnar Ohlson

Stefan Szepessy

Berth I Bodelson

Leif Bengtsson

Toini Salmi

Staffan Grandin

Jonas Hjelm

A drive unit for a centrifuge rotor of a centrifugal separator is provided that includes a drive shaft, arranged to support the centrifuge rotor and rotatably journalled around an axis (z) of rotation, a casing, which forms an inner space for the drive shaft, a drive motor shaft which is provided outside the casing and connected to the drive shaft by means of a transferring member extending through a passage in the casing, at least one shielding member, which is provided inside the casing in such a manner that the part of the transferring member which is located inside the casing is shielded from the inner space, and wherein the shielding member forms a channel, which extends through the casing and is shielded from the inner space of the casing.

Drive unit for a centrifuge rotor of a centrifugal separator

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

Drive unit for centrifuge rotor of a centrifugal separator

A flexible metal support device for a rotatable centrifuge rotor (2) provided in a frame member (1) by a bearing member (4). The support device comprises a support element (7) provided between the bearing member (4) and the frame member (1), and arranged to absorb relative movements between the centrifuge rotor and the frame member. The support element (7) comprises an inner mounting portion, essentially immovable in relation to the bearing member (4), and an outer mounting portion, essentially immovable in relation to the frame member (1). Moreover, the support element (7) comprises three flexible connecting portions which each extends between the inner and outer mounting portions and is arranged to absorb radial and axial relative movements between the centrifuge rotor and the frame member. Furthermore, the inner portion, the connecting portions and the outer portion form an integrated unit manufactured in one piece of metal material.

Flexible metal supporting device for a centrifugal separator

Centrifugal rotor and a slide for such a rotor

Growing community of inventors

Huddinge, Sweden

Jan Setterberg