US4617010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the partial dehydration of sludge in the centrifuge field of a solid jacket centrifuge
Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1984-05-24
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Granted: 1986-10-14
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Expires: 2004-05-24
Abstract
Abstract An apparatus for partial dehydration of a sludge in the centrifugal field of a centrifuge wherein the residual moisture of the sludge is substantially reduced with a comparatively low compression of the sludge, and the non-effective cone length of the centrifuge is reduced without shortening the sludge dwell time. The invention includes an arrangement of agitator elements within the centrifugal drum, coupled with a following shearing centrifuge and decanter, the shearing centrifuge being connected at the discharge of the centrifugal drum.
Inventors
- 👤 Wolfgang Epper
- 👤 Johannes Florenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:23
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/20; B04B2001/2041; B04B2001/205
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
97 words
An apparatus for dewatering sludge in the centrifugal field of a solid jacket centrifuge comprising: a centerfuge drum, agitator elements situated within said centrifuge drum, said agitator elements including impelling means thereon, means for causing relative movement between some of said agitator elements and others of said agitator elements in a direction parallel to the rotational axis of said centrifuge, means for adjusting the amount of said relative movement between said agitator elements, means for adjusting the rotational speed of said agitator elements, and means for adjusting the angle of incidence of some of said agitator elements.
Claim 2
Independent Claim
97 words
An apparatus for dewatering sludge in the centrifugal field of a solid jacket centrifuge comprising: a centerfuge drum, agitator elements situated within said centrifuge drum, said agitator elements including impelling means thereon, means for causing relative movement between some of said agitator elements and others of said agitator elements in a direction parallel to the rotational axis of said centrifuge, means for adjusting the amount of said relative movement between said agitator elements, means for adjusting the rotational speed of said agitator elements, and means for adjusting the angle of incidence of some of said agitator elements.
Claim 3
Dependent Claim
15 words
An apparatus according to claim 1 which includes a decanter section and a shearing cengtrifuge.
Claim 4
Dependent Claim
19 words
An apparatus according to claim 2 wherein said shearing centrifuge is in the form of a thrust shearing apparatus.
Claim 5
Dependent Claim
19 words
An apparatus according to claim 2 which includes a thrust rake having a controllable thrust frequency and thrust length.
Claim 6
Dependent Claim
15 words
An apparatus according to claim 2 wherein said decanter and shearing centrifuge are drivingly interconnected.
Claim 7
Dependent Claim
31 words
An apparatus according to claim 2 in which said shearing centrifuge is positioned axially behind said decanter and means for returning the centrifuged product from said shearing centrifuge into said decanter.
Claim 8
Dependent Claim
26 words
An apparatus according to claim 2 wherein said decanter and said shearing centrifuge are arranged axially behind one another and both have an essentially cylindrical configuration.
Claim 9
Dependent Claim
15 words
An apparatus according to claim 2 which includes a scraping device in said shearing centrifuge.
Claim 10
Dependent Claim
37 words
An apparatus according to claim 2 wherein said shearing centrifuge is in the form of a double cone, the two portions of said double cone being axially displaceable to form a discharge gap for the sheared sludge.
Claim 11
Dependent Claim
17 words
An apparatus according to claim 9 including means for controlling the relative displacement between said two portions.
Claim 12
Dependent Claim
34 words
An apparatus according to claim 1 wherein said drum includes adjoining cylindrical and conically shaped portions, and said agitator elements are located at the region of transition between said cylindrcial and conically shaped portions.
Claim 13
Dependent Claim
23 words
An apparatus according to claim 1 wherein said impelling means includes helical blades and said agitator elements are disposed between said helical blades.
Claim 14
Dependent Claim
18 words
An apparatus according to claim 12 wherein said helical blades have radial slots in their outer circumferential regions.
Claim 15
Dependent Claim
17 words
An apparatus according to claim 1 wherein said agitator elements extend radially inwardly from said centrifugal drum.
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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) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |