US3580492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trifugal separator with adjustable outlet means
Assignee: Alfa Laval AB
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Filing: 1968-08-15
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Granted: 1971-05-25
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Expires: 1988-08-15
Abstract
Abstract In a centrifugal separator of the kind having a conveyor screw arranged in the rotor for discharging sludge, or the like, separated from the liquid fed to the rotor, the overflow outlets for the liquid are movable between radially inner and outer positions while the rotor is in operation. For this purpose the overflow outlets are at least partly formed by separate members rotatable with the rotor but journaled for rotation relative thereto so as to effect such radial movements of the outlets, and means are provided for rotating all of the journaled members synchronously relative to the rotor and through the same angle.
Inventors
- 👤 Jan R Schnittger
- 👤 Carl-Goran Nilson
- 👤 Bengt D R Larsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:01
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/20; B04B2001/2083
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
113 words
In a centrifugal separator, the combination of a rotor mounted for rotation about an axis, a conveyor screw mounted in the rotor and operable to discharge therefrom sludge, or the like, centrifugally separated from a liquid supplied to the rotor, the rotor having overflow outlets for liquid which has been freed from sludge, journaled members associated with said overflow outlets, respectively, the journaled members being rotatable with the rotor but journaled thereto for independent rotation to move the overflow outlets between radially inner and outer positions relative to said rotor axis, and adjustment means operatively connected to the journaled members for rotating said members synchronously through the same angle relative to the rotor.
Claim 2
Dependent Claim
113 words
In a centrifugal separator, the combination of a rotor mounted for rotation about an axis, a conveyor screw mounted in the rotor and operable to discharge therefrom sludge, or the like, centrifugally separated from a liquid supplied to the rotor, the rotor having overflow outlets for liquid which has been freed from sludge, journaled members associated with said overflow outlets, respectively, the journaled members being rotatable with the rotor but journaled thereto for independent rotation to move the overflow outlets between radially inner and outer positions relative to said rotor axis, and adjustment means operatively connected to the journaled members for rotating said members synchronously through the same angle relative to the rotor.
Claim 3
Dependent Claim
25 words
The combination according to claim 1, in which said adjustment means are operable to retain the journaled members in adjusted positions relative to the rotor.
Claim 4
Dependent Claim
28 words
The combination according to claim 1, in which said adjustment means include a gear ring positively engaging all of said journaled members and movable relative to the rotor.
Claim 5
Dependent Claim
49 words
The combination according to claim 1, wherein each journaleD member at least partly defines a channel of which at least part of the length extends in a direction forming an angle with said rotor axis, the channel communicating at one end with the corresponding outlet opening of the rotor.
Claim 6
Dependent Claim
26 words
The combination according to claim 4, in which said corresponding outlet opening of the rotor is located coaxially with the rotation axis of the journaled member.
Claim 7
Dependent Claim
46 words
The combination according to claim 1, wherein each journaled member includes a substantially L-shaped pipe portion defining a channel having part of its length extending at an angle to said rotor axis, the channel communicating at one end with the corresponding outlet opening of the rotor.
Claim 8
Dependent Claim
99 words
The combination according to claim 1, wherein each journaled member at least partly defines a channel of which at least part of the length extends in a direction forming an angle with said rotor axis, the channel communicating at one end with the corresponding outlet opening of the rotor, said outlet opening being located apart from the journaled member, said journaled member having a flange opposite said outlet opening and coacting with the rotor to form said channel, said flange having a bore extending therethrough, said channel being curved and communicating with both said outlet opening and said bore.
Claim 9
Dependent Claim
89 words
The combination according to claim 1, wherein each journaled member at least partly defines a channel of which at least part of the length extends in a direction forming an angle with said rotor axis, the channel communicating at one end with the corresponding outlet opening of the rotor, the conveyor screw being adapted to discharge said sludge from the rotor at a predetermined minimum radius from the rotor axis, said channel, in one position of the journaled member, opening into the rotor radially inward from said minimum radius.
Claim 10
Dependent Claim
33 words
The combination according to claim 1, in which the rotor also has at least one peripheral outlet, at least one of said journaled members being operable to open and close said peripheral outlet.
Claim 11
Dependent Claim
72 words
The combination according to claim 1, in which said adjustment means include a gear ring positively engaging all of said journaled members and movable relative to the rotor, and a pair of rotatable members rotatably adjustable relative to each other and positively connected to the gear ring and the rotor, respectively, whereby rotation of one of said pair relative to the other causes relative movement between the rotor and the gear ring.
Claim 12
Dependent Claim
86 words
The combination according to claim 10, in which the rotatable members of said pair have coaxially extending axes of rotation and are provided with helically extending splines of different pitches, respectively, the adjustment means also including an element provided with helically extending splines of different pitches corresponding to said first pitches, respectively, and mating with the respective splines of said rotatable members, said element being rotatable with said rotatable members but displaceable axially relative thereto rotatably adjusting one of said rotatable members relative to the other.
Claim 13
Dependent Claim
19 words
The combination according to claim 11, in which the spline pitches of said two rotatable members are oppositely directed.
Claim 14
Dependent Claim
117 words
The combination according to claim 1, in which said adjustment means include a gear ring positively engaging all of said journaled members and movable relative to the rotor, four coaxially arranged gear wheels having beveled toothed portions, the two outer gear wheels being positively connected to said gear ring and the rotor, respectively, the two inner gear wheels being free from said gear ring and rotor and being rotatable to various positions relative to each other, two beveled gears each engaging and rollable around one outer and one inner of said four coaxially arranged gear wheels, and means interconnecting said two beveled gears to cause them to accompany each other when rolling around said four gear wheels.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |