Patent ID: 7306556
Filing Date: 2007-12-11
Classification: B04B

Abstract:
1. An entrainment device for a centrifugal rotor, the rotor comprising: a rotor body, which is rotatable about a central rotational axis and delimits a separation chamber; and an inlet device which is connected to the rotor body for rotation with the same and which delimits a central space for receiving of liquid, which is supplied to the centrifugal rotor, which central space is in communication with the separation chamber, the inlet device comprising; a central body arranged centrally in the centrifugal rotor and surrounding said space, the central body at its one axial end having an opening which communicates with said central space; and an entrainment device having entrainment members arranged in said space for entrainment of said liquid by the rotation of the centrifugal rotor, the entrainment device is in such an engagement to the central body that it is entrained in its rotation and is prevented to move axially relative the same; the entrainment device comprising a first component, which surrounds the rotational axis and has at least one first projection, which has a radial extension, and a second component, which surrounds the rotational axis and has at least a second projection, which has a radial extension, the second component being axially introducible in said central space to a position, in which said second projection is present adjacent said first projection; and a locking member in releasable engagement with said projections, when said entrainment device substantially is in place in the central space, so that the second component substantially is prevented from moving axially relative the first component.