US3815740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin waterfall separating and screening apparatus
Assignee: Sprout Bauer Inc
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Filing: 1971-06-28
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Granted: 1974-06-11
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Expires: 1991-06-28
Abstract
Abstract This invention is directed to screen units and screen assemblies applied primarily to the separation and reclamation of solids, particularly fibrous solids, from a fluid slurry. Preferred embodiments are distinguished by a screen section or sections the flow surface of which is defined by bars or wires arranged in closely spaced relation and in a direction transverse to slurry flow thereacross. In use, the screen sections are so established that the flow surface defined thereby is in a plane or planes inclined to a horizontal. Each embodiment of the invention is characterized by a screen section or assembly of screen sections having in connection therewith a feed system including a variable flow control means. The controls provided enable a directed initial feed of a fibrous or like slurry in a thin waterfall form and in a manner whereby the initial engagement of the slurry with the flow surface can be variably placed with an impact effect. The structural features provided enable oily, fatty and like adherent substances to be optimally separated from the solids content of the slurry in movement thereof to and over the flow surface provided by the invention embodiments.
Inventors
- 👤 M Ginaven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:16
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/04; B01; B01D; B01D35/00; B01D35/28; B07B1/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
186 words
A screen type separating and/or classifying apparatus comprising apertured screen structure defining a flow surface successive segments of which are arranged in different planes and formed by transversely extending bar-like elements having transversely spaced longitudinally extending underlying supports, said flow surface being positioned at an angle to a horizontal plane, means providing for connection of a source of supply of a slurry embodying hair, feathers or other fibrous material, and means for directing the slurry to said flow surface including means for selectively impacting said slurry on said flow surface to induce release from said material of adherent substance, said directing means including a formed plate-like structure over which the slurry is caused to flow to reach said flow surface, said plate-like structure including a generally horizontally orienting flat plate means made adjustable to direct flow to a selected specific area of the flow surface, said plate means having a selectively positioned edge portion over which the slurry will move in a waterfall effect to impact on said flow surface at a selected distance from and in correspondence with the adjusted position of said plate means.
Claim 2
Dependent Claim
186 words
A screen type separating and/or classifying apparatus comprising apertured screen structure defining a flow surface successive segments of which are arranged in different planes and formed by transversely extending bar-like elements having transversely spaced longitudinally extending underlying supports, said flow surface being positioned at an angle to a horizontal plane, means providing for connection of a source of supply of a slurry embodying hair, feathers or other fibrous material, and means for directing the slurry to said flow surface including means for selectively impacting said slurry on said flow surface to induce release from said material of adherent substance, said directing means including a formed plate-like structure over which the slurry is caused to flow to reach said flow surface, said plate-like structure including a generally horizontally orienting flat plate means made adjustable to direct flow to a selected specific area of the flow surface, said plate means having a selectively positioned edge portion over which the slurry will move in a waterfall effect to impact on said flow surface at a selected distance from and in correspondence with the adjusted position of said plate means.
Claim 3
Dependent Claim
149 words
A screen assembly as set forth in claim 1 characterized by said flow surface being comprised, at least in part, of spaced parallel bars or wires arranged generally transverse to the direction of slurry flow, said bars including edge portions presented for impact of the slurry thereon as determined by the position of said flow directing means and said edge portion of said plate means being projected over said flow surface in the sense of flow to determine that the slurry will move downwardly therefrom in a thin sheet-like flow the impact of which produces a physical release from the solids in the flow of adherent substance as well as liquid and the form of said flow surface being such that the impacted slurry will move down the same in the process of which attendant liquid and separated adherent substances will be washed from and through said flow surface.
Claim 4
Dependent Claim
157 words
In a screen type separating and/or classifying apparatus of the type providing a screen surface declining from the horizontal and backed by a reservoir receiving a slurry of liquids, solids and semi-solids, which slurry overflows the reservoir and runs down the screen surface, the improvement comprising means intermediate the reservoir and screen surface for causing the overflowing slurry to reach the screen surface in a free fall waterfall effect productive of a more thorough scouring of the screen surface and a more complete release of liquids and semi-solids for passage through the screen surface, said means including a control plate at an upper side edge of said reservoir and projecting in the sense of flow from said reservoir in a generally horizontal plane above said screen surface, said plate being overflowed by slurry from said reservoir and presenting an outer edge over which the overflowing slurry cascades in a flat concentrated stream downwardly upon the screen surface.
Claim 5
Dependent Claim
157 words
In a screen type separating and/or classifying apparatus of the type providing a screen surface declining from the horizontal and backed by a reservoir receiving a slurry of liquids, solids and semi-solids, which slurry overflows the reservoir and runs down the screen surface, the improvement comprising means intermediate the reservoir and screen surface for causing the overflowing slurry to reach the screen surface in a free fall waterfall effect productive of a more thorough scouring of the screen surface and a more complete release of liquids and semi-solids for passage through the screen surface, said means including a control plate at an upper side edge of said reservoir and projecting in the sense of flow from said reservoir in a generally horizontal plane above said screen surface, said plate being overflowed by slurry from said reservoir and presenting an outer edge over which the overflowing slurry cascades in a flat concentrated stream downwardly upon the screen surface.
Claim 6
Dependent Claim
28 words
Apparatus according to claim 3, wherein said plate is adjustable relatively to said screen surface to select areas of the screen surface to receive the downwardly cascading slurry.
Claim 7
Dependent Claim
31 words
Apparatus according to claim 3, wherein said means intermediate the reservoir and screen surface include sharp edged guide means defining lateral extremities of the stream as delivered to said outer edge.
Claim 8
Dependent Claim
140 words
In a screen type separating and/or classifying apparatus of the type providing a screen surface declining from the horizontal and backed by a reservoir receiving a slurry of liquids, solids and semi-solids, which slurry overflows the reservoir and runs down the screen surface, means for framing said screen surface including sidewalls and means disposed laterally between said sidewalls defining a point of overflow of the slurry from said reservoir, and a control assembly superposed on said laterally disposed means between said side Walls including a horizontally oriented plate receiving the slurry from the reservoir and conducting it to a selected position over the screen surface, said plate having an edge projecting in the sense of flow in a vertically spaced overlying relation to the screen surface over which the slurry flows in a cascading stream downwardly upon the screen surface.
Claim 9
Dependent Claim
140 words
In a screen type separating and/or classifying apparatus of the type providing a screen surface declining from the horizontal and backed by a reservoir receiving a slurry of liquids, solids and semi-solids, which slurry overflows the reservoir and runs down the screen surface, means for framing said screen surface including sidewalls and means disposed laterally between said sidewalls defining a point of overflow of the slurry from said reservoir, and a control assembly superposed on said laterally disposed means between said side Walls including a horizontally oriented plate receiving the slurry from the reservoir and conducting it to a selected position over the screen surface, said plate having an edge projecting in the sense of flow in a vertically spaced overlying relation to the screen surface over which the slurry flows in a cascading stream downwardly upon the screen surface.
Claim 10
Dependent Claim
29 words
Apparatus according to claim 6, wherein said control assembly includes means defining sharp edged guides defining lateral extremities of the slurry stream as delivered to said projecting plate edge.
Claim 11
Dependent Claim
51 words
Apparatus according to claim 6, wherein said control assembly includes means effecting an adjustable mounting of said plate to said sidewalls whereby said plate may be adjusted in a longitudinal sense relative to said screen surface to determine a location on said screen surface to receive the downwardly cascading slurry stream.
Claim 12
Dependent Claim
135 words
A screen type separating and/or classifying apparatus comprising means defining an apertured flow surface, said flow surface being positioned at an angle to a horizontal plane, and means for directing a slurry embodying solids including, for example, hair, feather or other fibrous material, to said flow surface, said slurry directing means including generally horizontally oriented plate means for conducting the slurry to a selected position over said flow surface, said plate means having a delivery edge portion projecting in the sense of flow and positioned in a spaced overlying relation to said flow surface and said edge portion being arranged to provide that the slurry moves downwardly therefrom in a cascading stream to impact on said flow surface and thereby achieve a definitive initial separation of said solids and the liquid vehicle comprising the slurry.
Claim 13
Dependent Claim
135 words
A screen type separating and/or classifying apparatus comprising means defining an apertured flow surface, said flow surface being positioned at an angle to a horizontal plane, and means for directing a slurry embodying solids including, for example, hair, feather or other fibrous material, to said flow surface, said slurry directing means including generally horizontally oriented plate means for conducting the slurry to a selected position over said flow surface, said plate means having a delivery edge portion projecting in the sense of flow and positioned in a spaced overlying relation to said flow surface and said edge portion being arranged to provide that the slurry moves downwardly therefrom in a cascading stream to impact on said flow surface and thereby achieve a definitive initial separation of said solids and the liquid vehicle comprising the slurry.
Claim 14
Dependent Claim
61 words
Apparatus as set forth in claim 9 characterized by at least part of said flow surface being defined by longitudinally spaced apart bars or wires arranged transverse to flow forming apertures with underlying supports, said bars or wires forming curves between said supports and apex portions of said curves being directed in the sense of slurry flow across said flow surface.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |