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US3836070A
Expired / Lapsed
US
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Method and apparatus for discharging the waste as well as enhancing the flocculation of the suspension and moving the waste in solid jacket centrifuges
Assignee: Individual
•
Filing: 1971-12-20
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Granted: 1974-09-17
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Expires: 1991-12-20
Abstract
Abstract Method for discharging the waste and enhancing the flocculation of the suspension and the movement of the waste in solid jacket centrifuges by applying jolts to the drive means by braking or acceleration in order to open or close the waste discharge apertures and impart jolts to the compacted material. The centrifuge is equipped with a shaft through which the suspension is supplied and power transfer means such as spokes between the shaft and the drum jacket which has discharge apertures into which the ends of the spokes extend where the spokes are provided with means to open and close the discharge apertures and means for varying the speed are associated with the shaft which impart jolts to the transfer means.
Inventors
- 👤 H Trawinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:45
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/26; B01D21/262; B04; B04B; B04B1/00; B04B1/10; B04B9/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
102 words
Method for discharging the compacted waste from solid jacket centrifuges provided with drive means by way of waste discharge apertures in the jacket of the drum of the centrifuge, as well as for enhancing the flocculation of the solid portion of the suspension to be compacted and of the movement of the compacted waste, said method comprising the steps of opening the waste discharge apertures by applying jolts to said drive means by braking or acceleration to open and close the waste discharge apertures and imparting jolts to the compacted waste material in a direction tangential to the jacket of the drum.
Claim 2
Dependent Claim
102 words
Method for discharging the compacted waste from solid jacket centrifuges provided with drive means by way of waste discharge apertures in the jacket of the drum of the centrifuge, as well as for enhancing the flocculation of the solid portion of the suspension to be compacted and of the movement of the compacted waste, said method comprising the steps of opening the waste discharge apertures by applying jolts to said drive means by braking or acceleration to open and close the waste discharge apertures and imparting jolts to the compacted waste material in a direction tangential to the jacket of the drum.
Claim 3
Dependent Claim
73 words
Method in accordance with claim 1, where for the further enhancement of the flocculation by a decrease in velocity the circumferential velocity of the entering supply suspension is made greater or smaller than that of the load suspension which is already stationary in the centrifuge, while the supply suspension is introduced in the same direction of rotation as the rotation of the load suspension and discharging waste through the apertures in the drum.
Claim 4
Dependent Claim
87 words
Apparatus for discharging the waste as well as enhancing the flocculation of a suspension and the movement of the waste in solid jacket centrifuges, comprising a centrifuge having a drum jacket provided with waste discharge apertures, a shaft having force transfer means such as arms extending to said apertures and having ends adapted to open and close said apertures, and means associated with said shaft operative to change the rotational speed by braking or acceleration and thereby open said apertures and impart jolts to the waste material.
Claim 5
Dependent Claim
87 words
Apparatus for discharging the waste as well as enhancing the flocculation of a suspension and the movement of the waste in solid jacket centrifuges, comprising a centrifuge having a drum jacket provided with waste discharge apertures, a shaft having force transfer means such as arms extending to said apertures and having ends adapted to open and close said apertures, and means associated with said shaft operative to change the rotational speed by braking or acceleration and thereby open said apertures and impart jolts to the waste material.
Claim 6
Dependent Claim
22 words
Apparatus in accordance with claim 3, where the Outer ends of said transfer means present cover devices for the waste discharge apertures.
Claim 7
Dependent Claim
84 words
Apparatus in accordance with claim 4, where said transfer means is in the form of a driving star connected to said shaft for movement through a limited angle relative to said drum jacket and said drum jacket having abutment means proximate said apertures for engagement by said cover devices and means whereby during the running phase said apertures are closed, while upon change in the angular position resulting from the change of the speed of said shaft and resulting jolts said apertures are opened.
Claim 8
Dependent Claim
31 words
Apparatus in accordance with claim 5, comprising projecting configurations such as cams defining on one side driving configurations such as ratchets or the like, and on the other side stopping abutments.
Claim 9
Dependent Claim
44 words
Apparatus in accordance with claim 6, where the waste discharge apertures pass through said projections and are open at the ratchet side and the ends of said driving star are provided with sealing surfaces which are engagement with said apertures during aperture closed operation.
Claim 10
Dependent Claim
47 words
Apparatus in accordance with claim 5, where the free ends of said driving stars extend into said waste discharge apertures and ends of said driving stars and the waste discharge apertures are provided with sealing surfaces that are in engagement with each other during aperture closed operation.
Claim 11
Dependent Claim
34 words
Apparatus in accordance with claim 7, where jolt dampening means are provided intermediate said ratchets and said stopping abutments on the one hand and the ends of said driving stars on the other hand.
Claim 12
Dependent Claim
43 words
Apparatus in accordance with claim 4, comprising covering devices operatively responsive to inertia forces pivotally mounted proximate said apertures and having arms responsive to centrifugal forces to close said apertures and in response to jolts applied through said shaft to open said apertures.
Claim 13
Dependent Claim
39 words
Apparatus in accordance with claim 10 where said centrifuge includes overflow means and a photocell proximate said overflow means for measuring the turbidity of the fluid to thereby control the duration of the closing intervals and the opening periods.
Claim 14
Dependent Claim
42 words
Apparatus in accordance with claim 11 where said drum jacket comprises a central waste collecting section and two sedimentation sections connected to said collecting section and where said waste discharge apertures and the force transfer means are disposed in said collecting section.
Claim 15
Dependent Claim
68 words
Apparatus in accordance with claim 12 where means are provided on said drum jacket in said sedimentation sections such as guide worms, scoops, claws or the like, while the sedimentation sections are cylindrical or of small inclination relative to the axis of said centrifuge and open toward said collecting section, and said collecting section is provided with side walls steeply inclined relative to the axis of said shaft.
Claim 16
Dependent Claim
37 words
Apparatus in accordance with claim 3 comprising a supply device for introducing a pre-accelerated supply suspension disposed coaxially with respect to said shaft and rotatable therewith in the same direction at increased or decreased numbers of rotation.
Claim 17
Dependent Claim
44 words
Apparatus in accordance with claim 14, where said supply device defines a pre-accelerating means in the form of a tube having discharge openings for the supply suspension that are directed outwardly toward said collecting section to discharge proximate the surface of the load suspension.
Claim 18
Dependent Claim
25 words
Apparatus in accordance with claim 14 comprising a hydraulic drive means for said supply device separated by means of the overflow stream from said centrifuge.
Claim 19
Dependent Claim
88 words
Apparatus in accordance with claim 16, where said supply device includes a paddle wheel connected with the sedimentation section of the drum jacket for rotation therewith to impart acceleration to the supply device, said wheel having an intake and an outlet for the overflow stream of clear fluid, an annular space connected to said outlet adapted to return clear fluid inwardly, a turbine wheel in the annular space tHrough which flows the clear liquid from said annular space outwardly and connected to said supply device for rotation therewith.
Claim 20
Dependent Claim
50 words
Apparatus in accordance with claim 16 where said hydraulic drive means includes a turbine wheel and for reducing the number of rotations of said supply device the clear liquid is conducted from the inside outwardly to said turbine wheel and said turbine wheel is directly connected with the supply device.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |