US3850814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scraper conveyor for a centrifugal separator
Assignee: Prab Conveyors Inc
•
Filing: 1974-02-20
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Granted: 1974-11-26
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Expires: 1994-02-20
Abstract
Abstract An endless chain is equipped with a plurality of spaced flights and is situated in an annular liquid-receiving trough of a centrifugal separator. A motor-driven sprocket means drivably engages the chain, and as the chain travels around the trough finely divided solids which settle in the trough are removed therefrom.
Inventors
- 👤 R Dudley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:51
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/10; B04B7/00; B04B7/02; B04B7/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
186 words
An apparatus for the centrifugal separation of larger solid particles from liquids and for removing finely divided solid materials entrained in the liquid after the first separation of the larger particles from the liquid which comprises in combination, a centrifugal separator for separating large particles from liquid and finely divided particles comprising a centrally positioned motor, a rotary distributing cone mounted above and driven by said motor, a separating bowl provided with a peripheral screen enveloping the motor and cone, and a liquidreceiving trough; a scraper conveyor in the liquid-receiving trough of the centrifugal separator; duct means mounted on the outside of said liquid-receiving trough and communicating with said trough for transporting remaining finely divided solid particles out of the liquidreceiving trough; endless chain situated in said liquid receiving trough and said duct means; a plurality of spaced flights attached to said chain for traversing the bottom portion of said liquid-receiving trough; frame means mounted on said duct means; sprocket means situated in said duct means and drivably engaging said chain; and motor means mounted on said frame means and drivably connected to said sprocket means.
Claim 2
Independent Claim
186 words
An apparatus for the centrifugal separation of larger solid particles from liquids and for removing finely divided solid materials entrained in the liquid after the first separation of the larger particles from the liquid which comprises in combination, a centrifugal separator for separating large particles from liquid and finely divided particles comprising a centrally positioned motor, a rotary distributing cone mounted above and driven by said motor, a separating bowl provided with a peripheral screen enveloping the motor and cone, and a liquidreceiving trough; a scraper conveyor in the liquid-receiving trough of the centrifugal separator; duct means mounted on the outside of said liquid-receiving trough and communicating with said trough for transporting remaining finely divided solid particles out of the liquidreceiving trough; endless chain situated in said liquid receiving trough and said duct means; a plurality of spaced flights attached to said chain for traversing the bottom portion of said liquid-receiving trough; frame means mounted on said duct means; sprocket means situated in said duct means and drivably engaging said chain; and motor means mounted on said frame means and drivably connected to said sprocket means.
Claim 3
Dependent Claim
43 words
The scraper conveyor in accordance with claim 1 wherein the sprocket means comprises a drive sprocket driven by said motor means through a speed reducer means and a pair of opposed idler sprockets mounted in said duct means and operably engaging said chain.
Claim 4
Dependent Claim
46 words
The scraper conveyor in accordance with claim 1 wherein a shear hub is fixedly mounted on the output shaft of said speed reducer, and the drive sprocket is journalled on said output shaft and fixedly attached to said shear hub by means of a shear pin.
Claim 5
Dependent Claim
17 words
The scraper conveyor in accordance with claim 1 wherein each flight is an elongated, inverted L-shaped member.
Claim 6
Dependent Claim
22 words
The scraper conveyor in accordance with claim 1 wherein the duct means mounted on the outside of said trough is extending upwardly.
Claim 7
Dependent Claim
19 words
The scraper conveyor in accordance with claim 1 wherein the frame means is slidably mounted on said duct means.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |