US3749304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of automatic control of the discharge of a concentrated traction of solid particles dispersed in liquids from a centrifuge rotor
Assignee: Czech Academy of Sciences
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Filing: 1972-01-03
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Granted: 1973-07-31
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Expires: 1992-01-03
Abstract
Abstract The control of discharge valves for the discharge of a concentrate from the circumference of a centrifuge rotor is achieved by application of an elastically yieldable body, elongated and shortened in accordance with the increasing and decreasing level of the concentrate in the circumferential part of the centrifuge body.
Inventors
- 👤 J Putterlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:30
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/10; B04B1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
A method of automatic control of the discharge of a concentrated fraction of a dispersion of solid particles in a liquid and of a heavier component in a combination of liquids from a centrifuge rotor by discharge valves, in dependence on an increasing and decreasing level of the concentrate, said method comprising the steps of utilizing for this control changes of longitudinal dimensions of a solid elastically yieldable body which changes being caused by the variations in pressure of an increasing and decreasing level of the concentrate at the circumference of a centrifuge rotor, simultaneously eliminating the influence of the treated non-concentrated dispersion occupying the rotor space centripetally from the concentrate on the elastically yieldable body by employing an elastically yieldable body having a volume compressibility corresponding to the volume compressibility of the liquids.
Claim 2
Independent Claim
134 words
A method of automatic control of the discharge of a concentrated fraction of a dispersion of solid particles in a liquid and of a heavier component in a combination of liquids from a centrifuge rotor by discharge valves, in dependence on an increasing and decreasing level of the concentrate, said method comprising the steps of utilizing for this control changes of longitudinal dimensions of a solid elastically yieldable body which changes being caused by the variations in pressure of an increasing and decreasing level of the concentrate at the circumference of a centrifuge rotor, simultaneously eliminating the influence of the treated non-concentrated dispersion occupying the rotor space centripetally from the concentrate on the elastically yieldable body by employing an elastically yieldable body having a volume compressibility corresponding to the volume compressibility of the liquids.
Claim 3
Dependent Claim
144 words
In a centrifuge comprising a rotor for separating a liquid dispersion of solid particles into a concentrated fraction and a heavier component, an arrangement for the automatic control of the discharge of the concentrated fraction comprising a plurality of discharge openings situated at the circumference of the rotor, each opening having an associate elastically yieldable body mounted to move radially within a circumferential area of said rotor defined by a predetermined upper and lower level of the concentrate, said elastically yieldable body being made of solid material having a volume compressibility corresponding to that of said liquid, thereby to be elongated and shortened in response to changes in pressure caused the change in concentrate level, and a valve rod embedded in said elastically yieldable body and reciprocally extending within said opening to open and close said opening on movement of said elastically yieldable body.
Claim 4
Dependent Claim
144 words
In a centrifuge comprising a rotor for separating a liquid dispersion of solid particles into a concentrated fraction and a heavier component, an arrangement for the automatic control of the discharge of the concentrated fraction comprising a plurality of discharge openings situated at the circumference of the rotor, each opening having an associate elastically yieldable body mounted to move radially within a circumferential area of said rotor defined by a predetermined upper and lower level of the concentrate, said elastically yieldable body being made of solid material having a volume compressibility corresponding to that of said liquid, thereby to be elongated and shortened in response to changes in pressure caused the change in concentrate level, and a valve rod embedded in said elastically yieldable body and reciprocally extending within said opening to open and close said opening on movement of said elastically yieldable body.
Claim 5
Dependent Claim
35 words
An arrangement as set forth in claim 2 the specific weight of the elastically yieldable body adjusted to the specific weight of the dispersion occupying the space of the centrifuge rotor centripetally from the concentrate.
Claim 6
Dependent Claim
49 words
An arrangement as set forth in claim 2, the elastically yieldable body anchored with its end distant from the rotor axis on a bracket of the centrifuge rotor and provided on its end closer to the rotor axis with a strap piece, on which the valve rod is suspended.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |