US3915865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydro-separator for slurry
Assignee: Kurita Water Industries Ltd
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Filing: 1974-06-10
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Granted: 1975-10-28
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Expires: 1994-06-10
Abstract
Abstract A hydro-separator for slurry is disclosed which comprises two symmetrical sets each consisting of a horizontal conveyor zone, a downwardly vertical conveyor zone and a returning conveyor zone, a pair of symmetrical endless water-pervious belts adapted each to be revolved sequentially round the three zones in the corresponding set and opposed to each other in a space intervening between the two downwardly vertical conveyor zones, slurry feed units, water suction drums adapted to remove water from the slurry being conveyed respectively on the said belts, two pairs of squeezing drums disposed one at an upper level and the other at a lower level within the said downwardly vertical conveyor zones and opposed to each other in each of the said levels contiguously to each other across the opposed belts, and a scraper adapted to remove the dehydrated slurry adhering to the belt surface.
Inventors
- 👤 Hideki Haji
- 👤 Hiro Okada
- 👤 Tadao Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:31
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/04; B01D33/042; B01D33/44; B01D33/46; B01D33/463
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
AN APPARATUS FOR STRIPPING SLURRY OF WATER CONTAINED THEREIN, WHICH COMPRISES IN COMBINATION: TWO ENDLESS WATER-PREVIOUS BELTS MOVABLE THROUGH A HORIZONTAL CONVEYOR ZONE, A DOWNWARD VERTICAL CONVEYOR ZONE ADJACENT SAID HORIZONTAL CONVEYOR ZONE AND A RETURNING CONVEYOR ZONE JOINING SAID DOWNWARD VERTICAL CONVEYOR ZONE AND SAID HORIZONTAL CONVEYOR ZONE, SAID BELTS BEING OPPOSED TO EACH OTHER IN SAID DOWNWARD VERICAL CONVEYOR ZONE AND BEING DISPOSED, IN SAID HORIZONTAL AND RETURNING CONVEYOR ZONES, AT POSITIONS SYMMETRICAL WITH RESPECT TO SAID DOWNWARD VERTICAL CONVEYOR ZONE, SLURRY FEED UNITS WHICH OPEN TOWARD OUTER SURFACE OF THE CORRESPONDING ENDLESS WATER-PERVIOUS BELTS AT PREDETERMINED POINTS IN SAID HORIZONTAL CONVEYOR ZONES, DRAINING MEANS AND WATER SUCTION DRUMS ENGAGING INNER SURFACES OF SAID ENDLESS WATER-PREVIOUS BELTS AT POSITIONS BEYOND THE POSITIONS OF SAID SLURRY FEED UNITS IN SAID HORIZONTAL CONVEYOR ZONES FOR REMOVING SAID WATER FROM SAID BELTS. UPPER SQUEEZING DRUMS ENGAGING INNER SURFACES OF SAID ENDLESS WATER-PREVIOUS BELTS AT POINTS WHICH SAID BELTS
Claim 2
Independent Claim
157 words
AN APPARATUS FOR STRIPPING SLURRY OF WATER CONTAINED THEREIN, WHICH COMPRISES IN COMBINATION: TWO ENDLESS WATER-PREVIOUS BELTS MOVABLE THROUGH A HORIZONTAL CONVEYOR ZONE, A DOWNWARD VERTICAL CONVEYOR ZONE ADJACENT SAID HORIZONTAL CONVEYOR ZONE AND A RETURNING CONVEYOR ZONE JOINING SAID DOWNWARD VERTICAL CONVEYOR ZONE AND SAID HORIZONTAL CONVEYOR ZONE, SAID BELTS BEING OPPOSED TO EACH OTHER IN SAID DOWNWARD VERICAL CONVEYOR ZONE AND BEING DISPOSED, IN SAID HORIZONTAL AND RETURNING CONVEYOR ZONES, AT POSITIONS SYMMETRICAL WITH RESPECT TO SAID DOWNWARD VERTICAL CONVEYOR ZONE, SLURRY FEED UNITS WHICH OPEN TOWARD OUTER SURFACE OF THE CORRESPONDING ENDLESS WATER-PERVIOUS BELTS AT PREDETERMINED POINTS IN SAID HORIZONTAL CONVEYOR ZONES, DRAINING MEANS AND WATER SUCTION DRUMS ENGAGING INNER SURFACES OF SAID ENDLESS WATER-PREVIOUS BELTS AT POSITIONS BEYOND THE POSITIONS OF SAID SLURRY FEED UNITS IN SAID HORIZONTAL CONVEYOR ZONES FOR REMOVING SAID WATER FROM SAID BELTS. UPPER SQUEEZING DRUMS ENGAGING INNER SURFACES OF SAID ENDLESS WATER-PREVIOUS BELTS AT POINTS WHICH SAID BELTS
Claim 3
Dependent Claim
24 words
The apparatus of claim 1, wherein: said draining means includes table rolls engaging inner surfaces of said belts for removing water from said belts.
Claim 4
Dependent Claim
25 words
The apparatus of claim 1, wherein: said draining means includes nonrotatable bar-shaped members engaging inner surfaces of said belts for removing water from said belts.
Claim 5
Dependent Claim
51 words
The apparatus of claim 1, wherein squeezing rolls engage said water-absorbing porous elastic covers wrapped around said water suction dRums and said upper and lower squeezing drums at positions out of contact with said endless water-pervious belts in such way that they are capable of pressing said water-absorbing porous elastic covers.
Claim 6
Dependent Claim
33 words
The apparatus of claim 1, wherein scrapers are disposed below said lower squeezing drums in such way that the extremities thereof approach the outer surface of at least one of said water-pervious belts.
Claim 7
Dependent Claim
45 words
The apparatus of claim 5, wherein the lower ends of said downward vertical conveyor zones fall on different levels, one higher than the other, and only one scraper is included to serve exclusively the belt whose lower end falls on the lower of said levels.
Claim 8
Dependent Claim
44 words
The apparatus of claim 1, wherein belt holders engage said endless water-pervious belts at positions adjacent contact points between said endless water-pervious belts and said water suction drums for increasing the areas of contact between said water suction drums and said endless water-pervious belts.
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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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |