US3623613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge
Assignee: Ernst Heinkel Maschinenbau KG
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Filing: 1970-03-04
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Granted: 1971-11-30
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Expires: 1990-03-04
Abstract
Abstract Centrifuge for separating liquid and solid components from a suspension, wherein the centrifuge is provided with a centrifugal drum and a filter bag insertable therein. A boundary edge of the filter bag is attached to the discharge end of the centrifugal drum and the other boundary edge is attached to a mushroom-shaped or buffer-type bottom piece; the centrifugal drum and the bottom piece are arranged coaxially with respect to each other and are rotatable together. In addition, the drum and bottom piece are relatively axially movable with respect to each other during rotation. A lid is mounted to the bottom piece and contacts the discharge end of the drum when the bottom piece is located at the bottom of the centrifugal drum during the centrifuging process itself. The lateral walls of the centrifugal drum are tapered conically to a minor extent toward the bottom at an angle which allows removal of the centrifugal drum from the filter bag in a satisfactory and easy manner.
Inventors
- 👤 Johann P Quetsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:54
CPC Classifications
B; B04; B04B; B04B3/00; B04B3/02; B04B3/025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
174 words
Centrifuge adapted to separate solid and liquid components of a suspension, comprising: a housing; perforated centrifugal drum means rotatably mounted in said housing and having a flanged-shaped discharge end; means for rotating said centrifugal drum means; bottom means coaxially arranged and operatively associated with respect to said centrifugal drum means and rotatable therewith, said bottom means being in a fixed axial position relative to said housing; said centrifugal drum means and said bottom means being axially movable with respect to each other; filter bag means insertable in said centrifugal drum means, having first and second boundary portions operatively connected to said discharge end of said centrifugal drum means and said bottom means, respectively; lid means arranged at the discharge end of said centrifugal drum means and operatively associated with said bottom means; said centrifuge constructed so that for purposes of discharging, said centrifugal drum means is axially displaced while said bottom means is retained in a relatively fixed position along with said lid means with respect to centrifugate portions formed during the centrifuging process.
Claim 2
Dependent Claim
174 words
Centrifuge adapted to separate solid and liquid components of a suspension, comprising: a housing; perforated centrifugal drum means rotatably mounted in said housing and having a flanged-shaped discharge end; means for rotating said centrifugal drum means; bottom means coaxially arranged and operatively associated with respect to said centrifugal drum means and rotatable therewith, said bottom means being in a fixed axial position relative to said housing; said centrifugal drum means and said bottom means being axially movable with respect to each other; filter bag means insertable in said centrifugal drum means, having first and second boundary portions operatively connected to said discharge end of said centrifugal drum means and said bottom means, respectively; lid means arranged at the discharge end of said centrifugal drum means and operatively associated with said bottom means; said centrifuge constructed so that for purposes of discharging, said centrifugal drum means is axially displaced while said bottom means is retained in a relatively fixed position along with said lid means with respect to centrifugate portions formed during the centrifuging process.
Claim 3
Dependent Claim
53 words
Centrifuge according to claim 1, which further comprises connecting members joining said bottom means and said lid means, said connecting members including at least two bolts, the length of each being approximately equal to the difference resulting from the inner depth of the centrifugal drum means and the thickness of the bottom means.
Claim 4
Dependent Claim
47 words
Centrifuge according to claim 1, wherein said lid means is provided with a gasket means inserted in an annular groove thereof, said gasket means adapted to sealably contact said discharge end of said centrifugal drum means when said bottom means and said centrifugal drum means are juxtaposed.
Claim 5
Dependent Claim
34 words
Centrifuge according to claim 1, wherein a fill pipe means is provided for feeding said suspension to said centrifugal drum means, said fill pipe means extending into a central opening in said lid means.
Claim 6
Dependent Claim
48 words
Centrifuge according to claim 4, wherein a washing pipe means is provided and extends into a central opening of said lid means for further treating the centrifugate, said washing pipe means being provided with apertures extending at substantially right angles to the axis of said centrifugal drum means.
Claim 7
Dependent Claim
42 words
Centrifuge according to claim 1, wherein said centrifugal drum means includes lateral wall portions which taper conically to a minor degree toward the bottom at an angle such that said centrifugal drum means can be withdrawn satisfactorily from said filter bag means.
Claim 8
Dependent Claim
19 words
Centrifuge according to claim 1, wherein said centrifugal drum means is axially displaceable by approximately twice its axial length.
Claim 9
Dependent Claim
37 words
Centrifuge according to claim 1, wherein a hollow shaft is operably connected by key means with a portion of said bottom means extending into said hollow shaft, said centrifugal drum means being seated on said hollow shaft.
References Cited (Backward Citations)
US3438500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |