Pusher centrifuge
First Claim
Patent Images
1. A pusher centrifuge, comprising:
- a housing;
at least one at least approximately cylindrical sieve drum which is rotatable in said housing and has an inner space and an axis of rotation;
said at least one at least approximately cylindrical sieve drum having two end portions;
means for feeding centrifuging material into said inner space at a first one of said two end portions of said at least one at least approximately cylindrical sieve drum;
said at least one at least approximately cylindrical sieve drum having an inner side and an axial direction;
a solid material outlet provided at a second one of said two end portions of said at least one at least approximately cylindrical sieve drum;
at least one co-rotating pusher ring capable of performing an oscillating motion in said axial direction while transporting at least partially dewatered centrifuging material at said inner side in a direction toward said solid material outlet;
said at least one co-rotating pusher ring having an outer edge portion;
surface elements provided at said outer edge portion of said at least one co-rotating pusher ring;
said surface elements being oriented in inclined relationship to said axis of rotation of said at least one at least approximately cylindrical sieve drum;
said at least one at least approximately cylindrical sieve drum having a predetermined circumferential direction; and
said surface elements imparting to the centrifuging material during said oscillating motion an additional motive component in said predetermined circumferential direction of said at least one at least approximately cylindrical sieve drum.
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Accused Products
Abstract
In a pusher centrifuge comprising substantially cylindrical sieve or straining drums which simultaneously rotate but also oscillate relative to one another, and a pusher bottom or base, the pusher edge of at least one sieve or straining drum is provided with inclined surfaces which impart in the transverse or circumferential direction a motive component to the centrifuging or solid material transported in the axial direction. By virtue of the thus generated shearing effect, the compacted solid material cake is torn open or disintegrated during the forward feed and the dewatering performance is improved.
15 Citations
10 Claims
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1. A pusher centrifuge, comprising:
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a housing; at least one at least approximately cylindrical sieve drum which is rotatable in said housing and has an inner space and an axis of rotation; said at least one at least approximately cylindrical sieve drum having two end portions; means for feeding centrifuging material into said inner space at a first one of said two end portions of said at least one at least approximately cylindrical sieve drum; said at least one at least approximately cylindrical sieve drum having an inner side and an axial direction; a solid material outlet provided at a second one of said two end portions of said at least one at least approximately cylindrical sieve drum; at least one co-rotating pusher ring capable of performing an oscillating motion in said axial direction while transporting at least partially dewatered centrifuging material at said inner side in a direction toward said solid material outlet; said at least one co-rotating pusher ring having an outer edge portion; surface elements provided at said outer edge portion of said at least one co-rotating pusher ring; said surface elements being oriented in inclined relationship to said axis of rotation of said at least one at least approximately cylindrical sieve drum; said at least one at least approximately cylindrical sieve drum having a predetermined circumferential direction; and said surface elements imparting to the centrifuging material during said oscillating motion an additional motive component in said predetermined circumferential direction of said at least one at least approximately cylindrical sieve drum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification