US3865727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumping apparatus with separating mechanism
Assignee: FMC Corp
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Filing: 1973-03-14
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Granted: 1975-02-11
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Expires: 1993-03-14
Abstract
Abstract An apparatus for pumping and simultaneously separating the liquid and solid components from debris laden wastewater is disclosed which utilizes a screw pump to elevate the liquid and convey the liquid over a separation screen. The liquid component and a portion of the solid components flow through the screen and the balance of the solid components is discharged separately. In a second embodiment, the wastewater is separated into its liquid-solid and solid components and the solid components are selectively sorted by passing them over additional separation screens which are of progressively larger porosity.
Inventors
- 👤 Fred W Broling
- 👤 Jeffrey A Baker
- 👤 Edward J Matras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:51
CPC Classifications
B; B03; B03B; B03B11/00; B01; B01D; B01D29/00; B01D29/01; B01D29/03; B01D29/035; B01D29/50; B01D29/52; B01D29/54; B01D29/62; B01D29/64; B01D29/6469; B01D29/6476; B03B5/00; B03B5/48; B03B5/52
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
226 words
Apparatus for progressively separating the solid components and liquid coMponent from debris laden flow comprising: a sump to receive said flow, an inclined trough to direct said flow during separation, said trough communicating with said sump at one end and having a discharge outlet at the opposite end, said trough having a plurality of axially spaced ports, screen means located in said ports to permit said components to be separated from said flow, said screen means being of progressively larger porosity at increased spacings from said sump, screw pump means for conveying said flow through said trough from the sump to the opposite end whereby said flow is conveyed over said screen means, said screw pump means having a first flight portion between said sump and a first adjacent port, and a second flight portion adjacent said discharge outlet, said second flight portion having a pitch that is greater than said first flight portion, said liquid component being separated from said flow by the first screen means while progressively larger solid components are separated from said flow at subsequent screens means, and any solid components not separated by said screen means are discharged through said discharge outlet, said screw pump including a pair of axially aligned tubes with the respective flight portions on the respective tubes and in which said tubes are rotated at different speeds.
Claim 2
Dependent Claim
226 words
Apparatus for progressively separating the solid components and liquid coMponent from debris laden flow comprising: a sump to receive said flow, an inclined trough to direct said flow during separation, said trough communicating with said sump at one end and having a discharge outlet at the opposite end, said trough having a plurality of axially spaced ports, screen means located in said ports to permit said components to be separated from said flow, said screen means being of progressively larger porosity at increased spacings from said sump, screw pump means for conveying said flow through said trough from the sump to the opposite end whereby said flow is conveyed over said screen means, said screw pump means having a first flight portion between said sump and a first adjacent port, and a second flight portion adjacent said discharge outlet, said second flight portion having a pitch that is greater than said first flight portion, said liquid component being separated from said flow by the first screen means while progressively larger solid components are separated from said flow at subsequent screens means, and any solid components not separated by said screen means are discharged through said discharge outlet, said screw pump including a pair of axially aligned tubes with the respective flight portions on the respective tubes and in which said tubes are rotated at different speeds.
Claim 3
Dependent Claim
233 words
Apparatus for progressively separating the solid components and liquid component from debris laden flow comprising: a sump to receive said flow, an inclined trough to direct said flow during separation, said trough communicating with said sump at one end and having a discharge outlet at the opposite end, said trough being arcuate in cross-section and having a plurality of axially spaced ports with a port adjacent said sump having opposite edges positioned at an offset angle in the direction of screw rotation from a horizontal plane extending through the axis of rotation thereof, screen means located in said ports to permit said components to be separated from said flow, said screen means being of progressively larger porosity at increased spacings from said sump, screw pump means for conveying said flow through said trough from the sump to the opposite end whereby said flow is conveyed over said screen means, said screw pump means having a first flight portion between said sump and a first adjacent port, and a second flight portion adjacent said discharge outlet, said second flight portion having a pitch that is greater than said first flight portion, said liquid component being separated from said flow by the first screen means while progressively larger solid components are separated from said flow at subsequent screen means, and any solid components not separated by said screen means are discharged through said discharge outlet.
Claim 4
Dependent Claim
233 words
Apparatus for progressively separating the solid components and liquid component from debris laden flow comprising: a sump to receive said flow, an inclined trough to direct said flow during separation, said trough communicating with said sump at one end and having a discharge outlet at the opposite end, said trough being arcuate in cross-section and having a plurality of axially spaced ports with a port adjacent said sump having opposite edges positioned at an offset angle in the direction of screw rotation from a horizontal plane extending through the axis of rotation thereof, screen means located in said ports to permit said components to be separated from said flow, said screen means being of progressively larger porosity at increased spacings from said sump, screw pump means for conveying said flow through said trough from the sump to the opposite end whereby said flow is conveyed over said screen means, said screw pump means having a first flight portion between said sump and a first adjacent port, and a second flight portion adjacent said discharge outlet, said second flight portion having a pitch that is greater than said first flight portion, said liquid component being separated from said flow by the first screen means while progressively larger solid components are separated from said flow at subsequent screen means, and any solid components not separated by said screen means are discharged through said discharge outlet.
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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |