US4038193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for separating liquids and solids from a mixture
Assignee: Outotec BV
•
Filing: 1972-11-24
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Granted: 1977-07-26
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Expires: 1992-11-24
Abstract
Abstract The invention relates to a method and a device for separating liquids and solids from a mixture, in which the mixture is applied in the form of a layer to a movable, endless filter belt, which is supported from a subjacent suction box adapted to move parallel to the belt, in which box a subatmospheric pressure is intermittently produced, the liquid constituents of the mixture being drawn across the filter belt during the periods of subatmospheric pressure, while the filter belt and the suction box are in intimate contact with each other and do not move relatively to each other owing to the suction force, whereas at the restoration of the atmospheric pressure in the suction box a relative displacement of the filter belt and the suction box is carried out.
Inventors
- 👤 Jacob van Oosten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:30
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/04; B01D33/44; B01D33/48; B01D33/50; B01D33/58; B01D33/60; B01D33/70; B01D33/74; B01D33/745; B01D33/747; B01D2201/00; B01D2201/20; B01D2201/204
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
228 words
A device for separating liquids and solid substances from a mixture, comprising: a movable, endless filter belt driven by a driving roller and an adjustable driving gear; a mixture supply nozzle positioned above the belt; a suction box subjacent the belt and adapted to move parallel to the belt and communicating through a flexible duct with a vacuum device; means for connecting the suction box alternately with the vacuum device or with atmosphere; a pneumatic cylinder for displacing the suction box parallel to the belt, the pneumatic cylinder being coupled to the driving gear to selectively move the suction box and belt together and separately return the suction box; the suction box comprising a plurality of relatively separate elements, each of the separate elements communicating through a separate flexible duct with a separate suction means communicating with the vacuum device, each suction means having a filtrate outlet; said device further provided with distribution nozzles arranged at intervals above the belt along the direction of movement of the belt, the distribution nozzles being optionally connected by distribution means to at least one of the filtrate outlets and a supply of at least one washing liquor, whereby the filtrate from each element is kept separate and said solid substances on the belt can be washed with filtrate from at least one filtrate outlet and with at least one washing liquor.
Claim 2
Independent Claim
228 words
A device for separating liquids and solid substances from a mixture, comprising: a movable, endless filter belt driven by a driving roller and an adjustable driving gear; a mixture supply nozzle positioned above the belt; a suction box subjacent the belt and adapted to move parallel to the belt and communicating through a flexible duct with a vacuum device; means for connecting the suction box alternately with the vacuum device or with atmosphere; a pneumatic cylinder for displacing the suction box parallel to the belt, the pneumatic cylinder being coupled to the driving gear to selectively move the suction box and belt together and separately return the suction box; the suction box comprising a plurality of relatively separate elements, each of the separate elements communicating through a separate flexible duct with a separate suction means communicating with the vacuum device, each suction means having a filtrate outlet; said device further provided with distribution nozzles arranged at intervals above the belt along the direction of movement of the belt, the distribution nozzles being optionally connected by distribution means to at least one of the filtrate outlets and a supply of at least one washing liquor, whereby the filtrate from each element is kept separate and said solid substances on the belt can be washed with filtrate from at least one filtrate outlet and with at least one washing liquor.
Claim 3
Dependent Claim
72 words
A device as claimed in claim 1, in which the suction box elements can be displaced by means of a pneumatic cylinder and the filter belt can be moved by means of a driving roller with an adjustable driving gear, the pneumatic cylinder and the roller drive being adpated to be coupled intermittently with equal speeds and directions and to be decoupled at different speeds of the box elements and the belt.
Claim 4
Independent Claim
18 words
A device as claimed in 2 which the filter belt extends between the driving roller and a scraper.
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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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |