US3960318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal separator
Assignee: Alfa Laval AB
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Filing: 1974-09-30
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Granted: 1976-06-01
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Expires: 1994-09-30
Abstract
Abstract The solids separated from a liquid in a centrifugal rotor are discharged through outlets of the rotor into a stationary chute surrounding the rotor and into which a flushing liquid is supplied. The chute is provided with an overflow outlet which coacts with the supply means for the flushing liquid to provide in the chute a layer of liquid of a thickness determined by the overflow outlet and rotating around the rotor, the discharged solids being received by and dispersed in this rotating layer and departing together with liquid over the overflow outlet.
Inventors
- 👤 Bengt Ingmar Dahlberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:09
CPC Classifications
B; B04; B04B; B04B11/00; B04B11/02; B04B1/00; B04B1/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
193 words
A centrifugal separator comprising a rotor for receiving a mixture of liquid and solids and having outlets for discharging separated solids during operation of the rotor, a stationary chute extending around the rotor and positioned in front of said outlets to receive and convey the discharged solids, means for supplying flushing liquid to the chute, and means forming an overflow outlet of the chute and coacting with said supply means to provide in the chute a layer of liquid of a thickness determined by said overflow outlet and rotating around said rotor, said supply means being operable to supply liquid to the chute in an amount sufficient to cause said discharged solids to be dispersed in the liquid and to depart together with the liquid over said overflow outlet, said chute being formed by a cylindrical housing having annular end walls, the housing also having an annular partition wall located between said end walls and having less radial extension than one of said end walls, the chute being located between said one end wall and the annular partition wall, the housing having an outlet between said partition wall and the other end wall.
Claim 2
Dependent Claim
193 words
A centrifugal separator comprising a rotor for receiving a mixture of liquid and solids and having outlets for discharging separated solids during operation of the rotor, a stationary chute extending around the rotor and positioned in front of said outlets to receive and convey the discharged solids, means for supplying flushing liquid to the chute, and means forming an overflow outlet of the chute and coacting with said supply means to provide in the chute a layer of liquid of a thickness determined by said overflow outlet and rotating around said rotor, said supply means being operable to supply liquid to the chute in an amount sufficient to cause said discharged solids to be dispersed in the liquid and to depart together with the liquid over said overflow outlet, said chute being formed by a cylindrical housing having annular end walls, the housing also having an annular partition wall located between said end walls and having less radial extension than one of said end walls, the chute being located between said one end wall and the annular partition wall, the housing having an outlet between said partition wall and the other end wall.
Claim 3
Dependent Claim
15 words
The separator of claim 1, in which said outlet extends generally tangentially from said housing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |