Impeller arrangement, for centrifugal rotor rotatable around rotation axis, has several impellers in central space for impelling incoming fluid into rotation of centrifugal rotor

摘要

The impeller arrangement incorporates a first component, which encloses the rotation axis and has at least one projection, which has a radial extent, and a second component which encloses the rotation axis and has at least a second projection which has also a radial extent. The second component is insertable axially in the central space to a position in which the second projection is near to the first projection. When the impellers are in position in the central space, a lock component can be applied in releasable engagement with the projections, so that the second component can be prevented from moving axially relatively to the first component.