Patent ID: 6224533
Filing Date: 2001-05-01
Classification: B04B,F16C

Abstract:
A centrifugal separator comprising a centrifuge rotor (2), a frame member (1) and a support device, said centrifuge rotor (2) being provided in the frame member (1) to be rotatable about an axis of rotation (z) by means of a bearing member (4), said support device comprising 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 (2) and the frame member (1), said support element comprising an inner mounting portion (8), which is arranged to be essentially immovable in relation to the bearing member (4), and an outer mounting portion (9), which is arranged to be essentially immovable in relation to the frame member (1), whereinthe support element (7) comprises at least three flexible connecting portions (10) each of which is curved and extends between the inner mounting portion (8) and the outer mounting portion (9),each connecting portion (10) is arranged to permit radial and axial movements between the centrifuge rotor (2) and the frame member (1), andthe inner mounting portion (8), the connecting portions (10) and the outer mounting portion (9) of the support element (7) form an integrated unit manufactured in one single piece of a metal material, andwherein each of said connecting portions has such a length that stresses occurring in the connecting portions (10) always are lower than the fatigue limit of the metal.