Patent US4269701A successfully refreshed from Google Patents.
US4269701A
Expired / Lapsed
US
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Cyclone separator for the removal of heavy particles and dust particles from fibre material
Assignee: Temafa Maschinenfabrik GmbH
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Filing: 1979-08-27
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Granted: 1981-05-26
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Expires: 1999-08-27
Abstract
Abstract A cyclone separator for separating heavy particles and dust particles from fibre material. The separator includes a cyclone housing (2), an inlet tube (9) that opens substantially tangentially into the housing (2), an overflow pipe (6) for the removal of cleaned light-weight fibre material, and an underflow outlet (4) for discharging heavy particles and dust particles. To improve dust removal, a sieve member 7, 8 is arranged inside housing (2) substantially co-axial with the housing axis and into which inlet tube (9) opens tangentially. Additionally, pin-studded or spike-studded strips are mounted on an inside face of the cyclone housing or of the sieve member to preliminarily open up the fibre material. A coaxial sieve member having flat bars with vertical upper portions and inwardly-curved lower portions that bound a co-axial lower sieve opening is also provided.
Inventors
- 👤 Franz Hock
- 👤 Franz-Herbert Dopper
- 👤 Gert Stock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:33
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/08; B04C5/103
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 words
A cyclone separator for separating heavy particles and dust particles from fibre material, said separator comprising: a cyclone housing; a sieve sleeve or sieve member arranged inside the cyclone housing, said sieve member being substantially coaxial with the cyclone housing axis and having downwardly-extending flat bars the upper portions of which are arranged vertically, and the lower ends of which are bent or curved inwardly to form a substantially balloon-shaped sieve region that bounds a co-axial lower sieve opening; an inlet tube that opens substantially tangentially into the cyclone housing and into the sieve member for the pneumatic feeding-in of the material to be cleaned; an overflow immersion or dip pipe for the removal of cleaned light-weight fibre material; and an underflow or apical nozzle or outlet for discharging heavy particles and dust particles.
Claim 2
Dependent Claim
134 words
A cyclone separator for separating heavy particles and dust particles from fibre material, said separator comprising: a cyclone housing; a sieve sleeve or sieve member arranged inside the cyclone housing, said sieve member being substantially coaxial with the cyclone housing axis and having downwardly-extending flat bars the upper portions of which are arranged vertically, and the lower ends of which are bent or curved inwardly to form a substantially balloon-shaped sieve region that bounds a co-axial lower sieve opening; an inlet tube that opens substantially tangentially into the cyclone housing and into the sieve member for the pneumatic feeding-in of the material to be cleaned; an overflow immersion or dip pipe for the removal of cleaned light-weight fibre material; and an underflow or apical nozzle or outlet for discharging heavy particles and dust particles.
Claim 3
Dependent Claim
33 words
A cyclone separator as claimed in claim 1 wherein the flat bars are oriented tangentially along the periphery of the sieve member and their width tapers down or decreases from top to bottom.
Claim 4
Dependent Claim
42 words
A cyclone separator as claimed in claim 1 wherein the sieve member is adjoined at the top by a solid sheet metal casing into which the inlet tube opens tangentially and through which passes, coaxial within the sieve member, the overflow pipe.
Claim 5
Dependent Claim
129 words
A cyclone separator as claimed in claim 4 wherein, for a given diameter D of the inlet tube and of the overflow pipe, there are the following further dimensions: Overall height of the sieve sleeve--2.2 D Height d2 of cylindrical housing section 2--1.8 D Height d2 of coned housing section 3--1.6 D Immersion depth d4 of the overflow immersion or dip tube 6 into sieve sleeve 16--1.5 to 2 D Radius of curvature d5 of lower, balloon-shaped, sieve sleeve section--1.2 D Diameter d6 of lower opening of the sieve sleeve--0.8 D Internal diameter d7 of the underflow or apical nozzle or outlet 4--0.8 D Diameter d8 of cylindrical housing section 2--3 D Diameter d9 of solid sheet-metal casing 15 and of the cylindrical part of the sieve sleeve--2.4 D
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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) | 1984-05-25 | 1984-11-24 | 1985-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-25 | 1988-11-24 | 1989-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-25 | 1992-11-24 | 1993-05-26 | $7700.00 | Window Closed / Lapsed |