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US 6,547,972 B1Granted
Centrifuge with ejector for solids
AssigneeFerrum AG
InventorsWerner Stahl, Harald Reinach
Life of this patent
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AssigneeFerrum AG
InventorsWerner Stahl, Harald Reinach
Estimating the term…
The invention relates to a centrifuge comprising a rotating drum (1) and comprising an ejection element (2) which rotates together with the drum in order to eject a cake (3) of solids, which is deposited on the inner side of the drum, in the axial direction (4). The ejection element (2) has a helix (5) which extends over the length of the drum. The helix (5) and the drum (1) are kinematically connected in such a manner that a reference point (A) at the circumference of the helix executes a rotational movement relative to the drum in the form of a sawtooth line (6, 8), with a first flank (7) of the sawteeth (8) corresponding approximately in its inclination (α) to the pitch (β) of the helix whereas a second flank (9) of the sawteeth (8) corresponds to an approximately axial ejection movement.
Centrifuge comprising a rotating drum and an ejection element which rotates together with the drum in order to eject a cake of solids, which is deposited on an inner side of the drum, in an axial direction of the drum, the ejection element having an ejector surface in the form of a screw-shaped helix, the helix and the drum being kinematically connected so that a reference point at a circumference of the helix executes a rotational movement relative to the drum in the shape of a sawtooth line, a first flank of the sawtooth line corresponding approximately in its inclination (α) to a pitch (β) of the helix and a second flank of the sawtooth line corresponding to an approximately axial ejection movement.
Method for operating a centrifuge having a rotatable drum and a rotatable screw-shaped helix disposed within and cooperating with the drum for ejecting a cake of solids deposited on an inner side of the drum comprising rotating the drum and the screw-shaped helix, and moving the helix relative to the drum so that a reference point on a circumference of the helix executes a rotational movement in the shape of a sawtooth line having a first flank with an inclination corresponding approximately to a pitch of the helix and a second flank having an inclination corresponding approximately to an axial ejection movement.
Dependencies are inferred from the claim text.