US4211643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocyclone separator
Assignee: Celleco AB
•
Filing: 1979-02-16
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Granted: 1980-07-08
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Expires: 1999-02-16
Abstract
Abstract A hydrocyclone separator for separating a materials mixture into fractions with an upper covered cylindrical part and a lower concial part, the upper part having a tangential inlet, and an axial outlet on its cover; the lower part having an outlet at its bottom. A cylindrical shell or mantle surrounds the container to receive leakage. The shell and container form three compartments with individual openings in which are pressure-sensitive or other sensitive indicators to show the presence of leakage.
Inventors
- 👤 Rune H. Frykhult
- 👤 Lars-Goran Rundqvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:59
CPC Classifications
D; D21; D21D; D21D5/00; D21D5/18; D21D5/24; B; B04; B04C; B04C11/00; B04C5/00; B04C5/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
210 words
A hydrocyclone separator for separating a material mixture into two fractions and comprising means forming a separation chamber having an upper portion and a downwardly tapering lower portion and also having a tangential inlet for in-feed of said material to said upper portion, means centrally located with respect to said chamber forming a first outlet from said upper portion for one of said fractions, said lower portion of the chamber tapering to a second outlet for the other of said fractions, said chamber-forming means including imperforate cylindrical wall means surrounding said upper chamber portion and imperforate conical wall means surrounding said lower chamber portion, and means for detecting leakage from the separation chamber through said wall means including an outer shell surrounding only a single said chamber-forming means and defining therewith at least one compartment surrounding both said cylindrical and said conical wall means, said compartment being closed from said inlet and from said first and second outlets of the separation chamber, the detecting means also including means for maintaining said compartment at a lower pressure than that at the outer periphery of the separation chamber when the separator is in operation, whereby said compartment can receive leakage from both said upper and said lower portions of the separation chamber.
Claim 2
Dependent Claim
210 words
A hydrocyclone separator for separating a material mixture into two fractions and comprising means forming a separation chamber having an upper portion and a downwardly tapering lower portion and also having a tangential inlet for in-feed of said material to said upper portion, means centrally located with respect to said chamber forming a first outlet from said upper portion for one of said fractions, said lower portion of the chamber tapering to a second outlet for the other of said fractions, said chamber-forming means including imperforate cylindrical wall means surrounding said upper chamber portion and imperforate conical wall means surrounding said lower chamber portion, and means for detecting leakage from the separation chamber through said wall means including an outer shell surrounding only a single said chamber-forming means and defining therewith at least one compartment surrounding both said cylindrical and said conical wall means, said compartment being closed from said inlet and from said first and second outlets of the separation chamber, the detecting means also including means for maintaining said compartment at a lower pressure than that at the outer periphery of the separation chamber when the separator is in operation, whereby said compartment can receive leakage from both said upper and said lower portions of the separation chamber.
Claim 3
Dependent Claim
21 words
The separator of claim 1, comprising also means dividing said compartment into sub-compartments surrounding said cylindrical and said conical wall means.
Claim 4
Dependent Claim
42 words
The separator of claim 2, wherein said wall means include at least two sections having an interconnection which forms an outwardly extending rib, said shell having an internal flange on which said rib rests, said flange and rib forming said dividing means.
Claim 5
Dependent Claim
22 words
The separator of claim 1, in which said outer shell surrounds said single chamber-forming means in substantially concentric closely spaced relation thereto.
Claim 6
Dependent Claim
25 words
The separator of claim 1, in which said detecting means also includes a transparent portion of said shell, whereby said leakage can be detected visually.
Claim 7
Dependent Claim
23 words
The separator of claim 1, in which said detecting means also includes means for sensing the presence of said leakage in said compartment.
Claim 8
Dependent Claim
15 words
The separator of claim 1, in which each said compartment has a restricted discharge opening.
References Cited (Backward Citations)
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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) | 1983-07-08 | 1984-01-07 | 1984-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-08 | 1988-01-07 | 1988-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-08 | 1992-01-07 | 1992-07-08 | $7700.00 | Window Closed / Lapsed |