Patent US3797661A successfully refreshed from Google Patents.
US3797661A
Expired / Lapsed
US
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Method and apparatus for separating granules from a liquid
Assignee: HAFTUNG FRIED KRUPP 4300 ESSEN 1 GERMANY GmbH
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Filing: 1972-05-04
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Granted: 1974-03-19
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Expires: 1992-05-04
Abstract
Abstract Granules formed of a synthetic material by immersion in water, form a mixture with a large amount of water. The granules are separated from the water by a first stream of air produced by a rotary blower whose air stream presses the mixture against a sieve so that water is discharged through the sieve while the remaining wet granules are further transported by the stream of air along the sieve where remaining water is removed through the sieve while tangentially directed second air streams produced by a blower wheel transport the granules from the sieve to an outlet for the granules, and are discharged on the other side of the sieve through a gas outlet.
Inventors
- 👤 H Buzga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:10
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/06; B29B13/065
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
The method of claim 1 wherein said mixture is placed on a downward slanted entrance portion of said sieve so that free water flows through said entrance portion into said discharge space by the action of gravity, the remaining mixture moving down to a second sieve portion following said entrance portion and being impinged by said stream of gas at such an angle that said first component of said stream pushes liquid in the interstices between said granules through said sieve, and said second component of said stream acts along said sieve to transport the moist granules along said sieve to said separating sieve portion.
Claim 2
Dependent Claim
40 words
The method of claim 1 comprising the step of applying suction to said discharge space whereby the pressure differential between said one side and said other side of said sieve is increased for rapidly moving the liquid through said sieve.
Claim 3
Dependent Claim
25 words
The method of claim 1 comprising separately treating said liquid and said gas after passage through said sieve; and recirculating said liquid and said gas.
Claim 4
Dependent Claim
225 words
Apparatus for separating granules from a liquid, comprising a casing having an inlet opening for gas; blower means mounted in said casing for drawing gas through said inlet opening and for discharging a stream of gas; stationary sieve means extending along said blower means at an angle to said stream of gas, and forming with the same a separating chamber having at one end an inlet for placing a mixture of granules and a liquid on one side of said sieve means, said one side being slanted at said angle to said streams of gas, said separating chamber having at the other end an outlet for granules; said casing including wall means surrounding said sieve means and forming with an end portion of said sieve means a discharge space having a discharge outlet for liquid and gas blown through said sieve portion, and forming with another end portion of said sieve means a gas outlet for gas flowing through said other end portion of said sieve means; said streams of gas having a first stream component transverse to said sieve means so that liquid is pressed to the other side of said sieve means while said mixture remains on said one side of said sieve means, and a second stream component flowing along said one side for transporting said mixture on said stationary sieve means.
Claim 5
Dependent Claim
77 words
Apparatus as claimed in claim 5 comprising a guide wall mounted in said housing along an other peripheral portion of said blower wheel between said inlet for said mixture and said outlet for said granules, said guide wall being spaced a gradually increasing distance from said other peripheral portion of said blower wheel for guiding air streams discharged at said other peripheral portion into said one end of said separating chamber adjacent said inlet for said mixture.
Claim 6
Dependent Claim
82 words
Apparatus as claimed in claim 6 wherein said wall means has a gradually increasing distance from said one end portion of said sieve means so that the flow cross section of said discharge space gradually increases toward said discharge outlet, and being spaced a short distance from the portion of said sieve means following said one end portion so that a constriction is formed in said discharge space between said one end portion and said other end portion of said sieve means.
Claim 7
Dependent Claim
55 words
Apparatus as claimed in claim 5 comprising guide vanes secured to said casing and located in said separating chamber along said peripheral portion of said blower wheel, and along said other end portion of said sieve means for guiding streams of gas through said other end portion of said sieve means to said gas outlet.
Claim 8
Dependent Claim
36 words
Apparatus as claimed in claim 8 wherein said guide vanes are curved so that said gas streams have components tangential to said blower means and substantially parallel to said other end portion of said sieve means.
Claim 9
Dependent Claim
332 words
Apparatus for separating granules from a liquid, comprising a casing having an inlet opening for a gas; a rotary blower wheel mounted in said casing for drawing gas through said inlet opening and for discharging streams of gas on the periphery thereof; sieve means extending along a peripheral portion of said blower wheel and forming with the same a separating chamber having at one end an inlet for a mixture of liquid and granules, and at the other end an outlet for granules; said casing including wall means surrounding said sieve means and forming with one end portion of said sieve means a discharge space having a discharge outlet for liquid and for gas blown through said one end portion, and forming with the other end portion of said sieve means a gas outlet for gas flowing through said other end portion of said sieve means; comprising a Guide wall mounted in said housing along another peripheral portion of said blower wheel between said inlet for said mixture and said outlet for said granules, said guide wall being spaced a gradually increasing distance from said other peripheral portion of said blower wheel for guiding air streams discharged at said other peripheral portion into said one end of said separating chamber adjacent said inlet for said mixture, said wall means having a gradually increasing distance from said one end portion of said sieve means so that the flow cross-section of said discharge space gradually increases toward said discharge outlet, and being spaced a short distance from the portion of said sieve means following said one end portion so that a constriction is formed in said discharge space between said one end portion and said other end portion of said sieve means, said wall means including a curved wall following said constriction and ending at said gas outlet, said curved wall being spaced from said other end portion of said sieve means a gradually increasing distance corresponding to the width of said gas outlet.
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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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |