US3919087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous pressure filtering and/or screening apparatus for the separation of liquids and solids
Assignee: Secondary Processing Systems
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Filing: 1974-05-20
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Granted: 1975-11-11
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Expires: 1994-05-20
Abstract
Abstract An apparatus for deliquefying solids is disclosed herein. The device is made up of three separate functional areas consisting of a cylindrical screen disposed between a first (inlet) cylinder and a second (compression) cylinder. The screen has a third concentric cylinder around it with a drain at the bottom. The screen and two cylinders are all of the same inside diameter. A screw runs through the first cylinder, the screen, and into the compression cylinder and the shaft of the screw extends through the compression cylinder. An annular piston is supported on the shaft in the second cylinder and is urged toward the screen by a helical spring. When the liquefied solids are fed into the first chamber, the screw moves them along the inner surface of the cylindrical screen through which the liquor is hydraulically expelled. The screw then pushes the solids retained on the screen into the second cylinder where it mechanically compresses and compacts the solids sufficiently to form a solid plug of sufficient length and compactness to effect a liquor tight seal along the inner shell of the compression chamber. The thrust of the solids being thus pushed against the piston deflects the spring and pushes the annular piston out of the compression cylinder so that the solids are extruded between the compression cylinder and the annular piston. The tension on the spring is adjustable to insure the formation of a liquid tight solid plug.
Inventors
- 👤 Ivan S Brumagim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:44
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/02; B30B9/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
233 words
AN APPARATUS FOR CONTINUOUS SEPARATION OF LIQUIDS AND SOLIDS COMPRISING, ACYLINDRICAL SCREEN, A HOLLOW COMPRESSION CYLINDER IN AXIAL ALIGNMENT WITH SAID CYLINDRICAL SCREEN AND HAVING AN INSIDE DIAMETER SUSTANTIALLY EQUAL TO THE INSIDE DIAMETER OF SAID SCREEN,. MEANS CONNECTING SAID CYLINDER TO SAID SCREEN, A SHAFT EXTENDING THROUGH SAID SCREEN AND THROUGH SAID COMPRESSION CYLINDER, A SCREW FIXED TO SAID SHAFT, SAID SCREW HAVING AN OUTSIDE DIAMETER ADAPTED TO ROTATE IN CLOSE PROXIMITY TO THE INSIDE OF SAID SCREEN, MEANS TO ROTATE SAID SHAFT, BEARING MEANS SUPPORTING EACH END OF SAID SHAFT, SUPPORT MEANS FIXED TO SAID SCREW EXTENDING OVER SAID COMPRESSION CYLINDER SUPPORTING ONE SAID BEARING, A HOLLOW AXIAL CYLINDRICAL PISTON RECIPROCABLY RECEIVED IN SAID COMPRESSION CYLINDER IN CLOSE PROXIMITLY TO THE INSIDE DIAMETER OF SAID CYLINDER, SAID PISTON HAVING A CENTRAL BORE SLIDABLY RECEIVING SAID SHAFT, RESILIENT MEANS DISPOSED AROUND SAID SHAFT URGING SAID PISTON INTO SAID CYLINDER, FEED MEANS FOR FEEDING LIQUID AND SOLID FRACTIONS INTO SAID SCREEN AT THE END THEREOF REMOTE FROM SAID PISTON, SAID SCREEN BEING ADAPTED TO ALLOW SAID LIQUID TO FLOW THROUGH SAID SCREEN, RETAINING SAID SOLIDS IN SAID SCREEN, AND MEANS TO COLLECT SAID LIQUIDS AS THEY FLOW THROUGH SAID SCREEN, SAID SCREW BEING ADAPTED TO MOVE SAID SOLIDS INTO SAID CYLINDER AGAINST SAID PISTION AND TO FORCE SAID PISTON AXIALLY FROM SAID CYLINDER WHEREBY SOME OF SAID SOLIDS ARE EXTRUDED FROM SAID CYLINDER.
Claim 2
Independent Claim
233 words
AN APPARATUS FOR CONTINUOUS SEPARATION OF LIQUIDS AND SOLIDS COMPRISING, ACYLINDRICAL SCREEN, A HOLLOW COMPRESSION CYLINDER IN AXIAL ALIGNMENT WITH SAID CYLINDRICAL SCREEN AND HAVING AN INSIDE DIAMETER SUSTANTIALLY EQUAL TO THE INSIDE DIAMETER OF SAID SCREEN,. MEANS CONNECTING SAID CYLINDER TO SAID SCREEN, A SHAFT EXTENDING THROUGH SAID SCREEN AND THROUGH SAID COMPRESSION CYLINDER, A SCREW FIXED TO SAID SHAFT, SAID SCREW HAVING AN OUTSIDE DIAMETER ADAPTED TO ROTATE IN CLOSE PROXIMITY TO THE INSIDE OF SAID SCREEN, MEANS TO ROTATE SAID SHAFT, BEARING MEANS SUPPORTING EACH END OF SAID SHAFT, SUPPORT MEANS FIXED TO SAID SCREW EXTENDING OVER SAID COMPRESSION CYLINDER SUPPORTING ONE SAID BEARING, A HOLLOW AXIAL CYLINDRICAL PISTON RECIPROCABLY RECEIVED IN SAID COMPRESSION CYLINDER IN CLOSE PROXIMITLY TO THE INSIDE DIAMETER OF SAID CYLINDER, SAID PISTON HAVING A CENTRAL BORE SLIDABLY RECEIVING SAID SHAFT, RESILIENT MEANS DISPOSED AROUND SAID SHAFT URGING SAID PISTON INTO SAID CYLINDER, FEED MEANS FOR FEEDING LIQUID AND SOLID FRACTIONS INTO SAID SCREEN AT THE END THEREOF REMOTE FROM SAID PISTON, SAID SCREEN BEING ADAPTED TO ALLOW SAID LIQUID TO FLOW THROUGH SAID SCREEN, RETAINING SAID SOLIDS IN SAID SCREEN, AND MEANS TO COLLECT SAID LIQUIDS AS THEY FLOW THROUGH SAID SCREEN, SAID SCREW BEING ADAPTED TO MOVE SAID SOLIDS INTO SAID CYLINDER AGAINST SAID PISTION AND TO FORCE SAID PISTON AXIALLY FROM SAID CYLINDER WHEREBY SOME OF SAID SOLIDS ARE EXTRUDED FROM SAID CYLINDER.
Claim 3
Dependent Claim
38 words
The apparatus recited in claim 1 wherein said means to collect said liquid comprises, a hollow outer cylinder disposed around said cylindrical screen providing a space therebetween, a drain connected to said outer cylinder for removing said liquid.
Claim 4
Dependent Claim
52 words
The apparatus recited in claim 2 wherein said resilient means is supported at its end remote from said piston by threaded rods, said threaded rods being adapted to move the end of said resilient means remote from said piston toward said screen complex whereby the tension on said resilient means in increased.
Claim 5
Dependent Claim
102 words
The apparatus recited in claim 2 wherein said outer cylinder has an annular flange attached to each end thereof, said annular flanges extending inward of said cylinder, said screen complex has a first and a second end, and said screen complex is supported at its first end in the inside diameter of one of said annular flanges, an O-ring on said annular flange forming sealing engagement with said screen complex, said first end of said complex has an outside surface and said annular flange has an O-ring disposed between said flange and said complex forming a seal between said complex and flange.
Claim 6
Dependent Claim
60 words
The apparatus recited in claim 2 wherein said screen complex comprises said cylindrical screen having an outwardly extendIng flange at one end, and said compression cylinder and said outer cylinder each have outwardly and inwardly extending flanges at one end respectively, said flange on said cylindrical screen is disposed between said flanges on said compression cylinder and said outer cylinder.
Claim 7
Dependent Claim
64 words
The apparatus recited in claim 2 wherein said resilient means includes a retaining plate having an opening therein received on said shaft, said retaining plate being disposed between said bearing means and said piston, and said resilient means further includes a spring resting on said plate, and threaded means on said bearing for selectively moving said plate toward and away from said compression cylinder.
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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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |