US3687286A
Expired / Lapsed
US
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Centrifugal force separator or classifier
Assignee: Osterreichisch Amerikanische Magnesit AG
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Filing: 1969-07-31
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Granted: 1972-08-29
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Expires: 1989-07-31
Abstract
Abstract A method and apparatus for simultaneously separating the solid from the liquid phase and coarse solids from finer solids in a suspension by feeding the suspension tangentially to the top of a centrifugal separator and water under pressure radially inwardly to a lower portion by the separator whereby the combined action of the centrifugal force generated and the turbulence thresholds created by the entry of the water causes the finer solid particles to move upwardly along the axis of rotation to a discharge outlet and the coarse particles to move downwardly along the wall of the separator to a discharge outlet at the lower end thereof.
Inventors
- 👤 Viktor Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:55
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/02; B04C5/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
160 words
A centrifugal separator for suspensions of solid particles in a liquid phase to simultaneously separate the liquid from the solid phase and the coarse from the fine solid particles comprising a hollow member including an upper portion and a lower downwardly tapered portion terminating in a lower discharge outlet for coarse solid particles, an upper discharge pipe for fine solid particles extending axially into said upper portion, means to deliver the suspension tangentially into said upper portion, and means to deliver water around and radially into said lower tapered portion between said upper and lower solid particles discharge outlets, so that turbulence thresholds are created at the water inlets which coact with the generated centrifugal force to cause the coarse particles to move along the walls of the member downwardly towards the lower discharge outlet and the finer particles and the bulk of the liquid to move inwardly adjacent the axis of the member upwardly towards the upper discharge outlet.
Claim 2
Dependent Claim
160 words
A centrifugal separator for suspensions of solid particles in a liquid phase to simultaneously separate the liquid from the solid phase and the coarse from the fine solid particles comprising a hollow member including an upper portion and a lower downwardly tapered portion terminating in a lower discharge outlet for coarse solid particles, an upper discharge pipe for fine solid particles extending axially into said upper portion, means to deliver the suspension tangentially into said upper portion, and means to deliver water around and radially into said lower tapered portion between said upper and lower solid particles discharge outlets, so that turbulence thresholds are created at the water inlets which coact with the generated centrifugal force to cause the coarse particles to move along the walls of the member downwardly towards the lower discharge outlet and the finer particles and the bulk of the liquid to move inwardly adjacent the axis of the member upwardly towards the upper discharge outlet.
Claim 3
Dependent Claim
31 words
The separator of claim 1 characterized in that said means to deliver water delivers said water at a pressure higher than the back pressure of the suspension at the water inlets.
Claim 4
Dependent Claim
51 words
The separator of claim 1 wherein said upper portion of said member is substantially cylindrical and said means to deliver the suspension therein includes an aperture in the wall of said upper portion above said upper discharge pipe and a pipe communicating with said aperture extending tangentially of said upper portion.
Claim 5
Dependent Claim
24 words
The separator of claim 3 characterized in that said lower discharge outlet is smaller than the aperture in the wall of the upper portion.
Claim 6
Dependent Claim
33 words
The separator of claim 1 wherein said means to deliver water into said lower portion of said member includes radially extending, circumferentially spaced conduits opening into said member above said lower discharge outlet.
Claim 7
Dependent Claim
48 words
The separator of claim 3 further comprising a ring conduit surrounding the lower portion of said member, said water supply conduits being connected to said ring conduit to derive their water supply therefrom, and a water supply pipe also connected to said ring conduit to supply water thereto.
Claim 8
Dependent Claim
39 words
The separator of claim 5 wherein said water supply conduits open into said member at the third quarter of the space between the entry of the suspension into the member at its upper end and the lower discharge outlet.
Claim 9
Dependent Claim
61 words
The separator of claim 5 further comprising a protective layer of elastic material on the inner face of said member at the entry of said water supply conduits, said protective layer including notch means opposite said conduits which act as one-way valves for the passage of water into the member and block passage of solid particles into said water supply conduits.
Claim 10
Dependent Claim
41 words
The separator of claim 5 characterized in that said supply conduits open into said member within the lower third quarter of the space between the entry of the suspension into the member at its upper end and the lower discharge outlet.
Claim 11
Dependent Claim
127 words
A process of separating coarse from finer solid particles suspended in a liquid and simultaneously separating the liquid from the solid phases comprised of providing a rotary zone having an upper portion and a downwardly tapering lower portion, feeding the suspension tangentially into the upper portion and feeding water around and radially into the tapering lower portion so that the turbulence thresholds of water are created which coact with the generated centrifugal force to cause the finer particles and the bulk of the liquid to move upwardly along the axis of the zone to a discharge outlet in the upper portion thereof and the coarser particles to move downwardly along the outer sides of the zone to a discharge outlet at the lower end of the zone.
Claim 12
Dependent Claim
127 words
A process of separating coarse from finer solid particles suspended in a liquid and simultaneously separating the liquid from the solid phases comprised of providing a rotary zone having an upper portion and a downwardly tapering lower portion, feeding the suspension tangentially into the upper portion and feeding water around and radially into the tapering lower portion so that the turbulence thresholds of water are created which coact with the generated centrifugal force to cause the finer particles and the bulk of the liquid to move upwardly along the axis of the zone to a discharge outlet in the upper portion thereof and the coarser particles to move downwardly along the outer sides of the zone to a discharge outlet at the lower end of the zone.
Claim 13
Dependent Claim
31 words
The process of claim 10 wherein the feeding of water into the lower portion of the zone commences before commencing to feed the suspension into the upper portion of the zone.
Claim 14
Dependent Claim
28 words
The process of claim 10 wherein the feeding of water under pressure is to the lower third quarter of the zone radially inward thereof at circumferentially spaced points.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |