US4626343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator for sorting particulate material
Assignee: FL SMIDTH & Co 77 VIGERSLEV ALLE DK-2500 VALBY COPENHAGEN DENMARK A DANISH Co AS
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Filing: 1985-07-31
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Granted: 1986-12-02
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Expires: 2005-07-31
Abstract
Abstract A separator for sorting particulate material suspended in a conveying gas into coarse and fine fractions has a rotor (1) with two sets (9,10) of vanes. Dampers (13,14) in outlet ducts for the fine fraction regulate the relative flow through the two vane sets and hence control the cut between the fine fraction and the coarse fraction which is flung centrifugally outwards by the vanes and falls down inside a casing (3).
Inventors
- 👤 Jan Folsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:12
CPC Classifications
B; B07; B07B; B07B7/00; B07B7/08; B07B7/083; B07B11/00; B07B11/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
149 words
In a separator for sorting particulate material suspended in a conveying gas into a fine fraction and a coarse fraction, the separator being of the kind comprising a rotor with two end plates and vanes, means to rotate the rotor, and a housing encasing said rotor and having an inlet duct leading to one end of said rotor for the supply of unsorted material and an outlet duct leading from an opposite end of said rotor for discharging said separated fine fraction, the improvement wherein said rotor comprises two sets of vanes with different sorting characteristics, and in that control means are provided for regulating the relative proportions of said conveying gas through different ones of said two vanes sets, said control means comprising separate outlet passages connected to said separator outlet duct with means mounted in each outlet passage to control the conveying gas through its respective passage.
Claim 2
Dependent Claim
149 words
In a separator for sorting particulate material suspended in a conveying gas into a fine fraction and a coarse fraction, the separator being of the kind comprising a rotor with two end plates and vanes, means to rotate the rotor, and a housing encasing said rotor and having an inlet duct leading to one end of said rotor for the supply of unsorted material and an outlet duct leading from an opposite end of said rotor for discharging said separated fine fraction, the improvement wherein said rotor comprises two sets of vanes with different sorting characteristics, and in that control means are provided for regulating the relative proportions of said conveying gas through different ones of said two vanes sets, said control means comprising separate outlet passages connected to said separator outlet duct with means mounted in each outlet passage to control the conveying gas through its respective passage.
Claim 3
Dependent Claim
39 words
A separator according to claim 1, wherein a first one of said vane sets is mounted between two end plates of said rotor and a second one of said vane sets is mounted on one of said end plates.
Claim 4
Dependent Claim
27 words
A separator according to claim 1, wherein a second one of said vane sets is mounted axially adjustably relatively to a first one of said vane sets.
Claim 5
Dependent Claim
28 words
A separator according to claim 3, wherein said second vane set is mounted on a ring surrounding and axially slidable on outer ends of said first vane set.
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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) | 1989-12-01 | 1990-06-02 | 1990-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-01 | 1994-06-02 | 1994-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-01 | 1998-06-02 | 1998-12-02 | $7700.00 | Window Closed / Lapsed |