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US 7,017,756 B2Granted
Multi-stage pusher centrifuge
AssigneeFerrum AG
InventorsHarald Reinach, Roy Geiger
Life of this patent
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AssigneeFerrum AG
InventorsHarald Reinach, Roy Geiger
Estimating the term…
The invention relates to a multi-stage pusher centrifuge (1) for the separation of a mixture (2) into a solid cake (3) and into a liquid phase (4). The multi-stage pusher centrifuge (1) includes an outer screen drum (6) rotatable about an axis of rotation (5) and at least one screen stage (7) arranged in the outer screen drum (6), and a mixture distributor (8) arranged in the screen drum (6) with a pusher base apparatus (9), with either the screen stage (7) or the pusher base apparatus (9) being arranged movably to and fro along the axis of rotation (5) such that the solid cake (3) is displaceable by means of the pusher base apparatus (9). The multi-stage centrifuge further includes an infeed device (10) with which the mixture (2) can be introduced via the mixture distributor (8) into an empty space (11) which arises on the displacement of the solid cake (3) by the pusher base apparatus (9), with the pusher base apparatus (9) including a pre-acceleration funnel (12) which extends in a substantially divergent manner in the direction towards the infeed device (10) and the pre-acceleration funnel (12) being designed as a pre-acceleration screen (12).
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.
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, 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, at the infeed device, an inlet funnel is arranged which extends at a substantially constant opening angle in a conically divergent manner in the direction towards the pusher base apparatus.
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, 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 including an inlet funnel which has a curved extent and an opening angle which becomes one of larger and smaller in the direction towards the pusher base apparatus.
Dependencies are inferred from the claim text.