Patent ID: 7017756
Filing Date: 2006-03-28
Classification: B04B

Abstract:
1. A multi-stage pusher centrifuge for the separation of a mixture into a solid cake and into a liquid phase, including an outer screen drum rotatable about an axis of rotation and at least one screen stage arranged in the outer screen drum, a mixture distributor arranged in the screen drum with a pusher base apparatus, with either the screen stage or the pusher base apparatus being arranged movably to and fro along the axis of rotation such that the solid cake is displaceable by means of the pusher base apparatus, and including an infeed device with which the mixture can be introduced via the mixture distributor into an empty space which arises on the displacement of the solid cake by the pusher base apparatus, with the pusher base apparatus including a pre-acceleration funnel which extends in a substantially divergent manner in the direction towards the infeed device, wherein the pre-acceleration funnel is designed as a pre-acceleration screen, and wherein the pre-acceleration funnel has a curved extent and a pre-acceleration angle which becomes one of larger and smaller in the direction towards the infeed device.