US3872009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the separation and treatment of solid particles from a liquid suspension
Assignee: Individual
•
Filing: 1973-09-20
•
Granted: 1975-03-18
•
Expires: 1993-09-20
Abstract
Abstract Apparatus for separation and purification of solids from a suspension and for leaching solid particles including an impervious column having a piston at one end through which a liquid suspension of solid particles is supplied and through which the suspension liquid is removed. The piston is reciprocated to form a bed of solid particles at the other end of the column from which the particles are progressively removed by melting or by mechanical scrapers with wash liquid being passed through the bed for cleaning or leaching purposes. In a second embodiment the bed of solid particles is formed by reciprocating the mechanical scrapers.
Inventors
- 👤 Henricus Alexis Corne Thijssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:14
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0223; B01D9/00; B01D9/004
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
321 words
Apparatus for the separation and purification of solids from a suspension and for leaching solid particles comprising an impervious column including: a. piston means closing one end of said column and mounted for reciprocating movement within said column to compact the solid particles to a bed and advance said compacted bed of solid particles to the opposite end of said column during the compression stroke of said reciprocating movement, said piston means including: i. a surface facing the bed of solid particles; ii. filtering means on said surface which is selectively permeable for the liquid phase of said suspension; iii. feeding means in communication with said surface for feeding said suspension into said column, said feeding means including: a. at least one opening in said surface and b. at least one conduit in flow communication with said opening; iv. first discharge means for the removal of said liquid phase of said suspension from said column including at least one conduit in flow communication with said filtering means; v. valve means in said at least one conduit of said feeding means to pass said suspension to said column only during the suction stroke of said reciprocating movement; vi. valve means in said at least one conduit of said discharge means to remove said liquid phase of said suspension only during said compression stroke of said reciprocating movement; vii. a pressure applicatOr in communication with said first discharge means before said valve means in said at least one conduit of said first discharge means including a cylinder with a double acting piston and pressure applying means connected thereto for actuating said pressure applicator; and b. treating means at the opposite end of said column for treating successive portions of said bed to facilitate removal of the treated portion from said column and second discharge means at said opposite end of said column for the progressive removal of said successive portions of said bed.
Claim 2
Dependent Claim
321 words
Apparatus for the separation and purification of solids from a suspension and for leaching solid particles comprising an impervious column including: a. piston means closing one end of said column and mounted for reciprocating movement within said column to compact the solid particles to a bed and advance said compacted bed of solid particles to the opposite end of said column during the compression stroke of said reciprocating movement, said piston means including: i. a surface facing the bed of solid particles; ii. filtering means on said surface which is selectively permeable for the liquid phase of said suspension; iii. feeding means in communication with said surface for feeding said suspension into said column, said feeding means including: a. at least one opening in said surface and b. at least one conduit in flow communication with said opening; iv. first discharge means for the removal of said liquid phase of said suspension from said column including at least one conduit in flow communication with said filtering means; v. valve means in said at least one conduit of said feeding means to pass said suspension to said column only during the suction stroke of said reciprocating movement; vi. valve means in said at least one conduit of said discharge means to remove said liquid phase of said suspension only during said compression stroke of said reciprocating movement; vii. a pressure applicatOr in communication with said first discharge means before said valve means in said at least one conduit of said first discharge means including a cylinder with a double acting piston and pressure applying means connected thereto for actuating said pressure applicator; and b. treating means at the opposite end of said column for treating successive portions of said bed to facilitate removal of the treated portion from said column and second discharge means at said opposite end of said column for the progressive removal of said successive portions of said bed.
Claim 3
Dependent Claim
48 words
The apparatus of claim 1 wherein said valve means in said at least one conduit of said feeding means is not more than three times the diameter of said conduit from said surface of said piston on the side of said piston opposite said bed of solid particles.
Claim 4
Dependent Claim
43 words
Apparatus according to claim 1 in which said treating means includes a rotating disc having scraping means and openings for passing the scraped-off portions through said disc, and means at said opposite end of said column for supplying washing liquid to said bed.
Claim 5
Dependent Claim
43 words
The apparatus of claim 3 further including means to maintain said rotating disc stationary during a first phase of said compression stroke of said piston and means to rotate said rotating disc during a second phase of said compression stroke of said piston.
Claim 6
Dependent Claim
62 words
The apparatus of claim 3 wherein said scraping means of said rotating disc includes at least one knife blade and said openings of said rotating disc are in the form of angled slots and the closed areas of said rotating disc include at least one concentric groove on the surface of said rotating disc in contact with said bed of solid particles.
Claim 7
Dependent Claim
19 words
The apparatus of claim 5 wherein each of said at least one knife blade has a single cutting edge.
Claim 8
Dependent Claim
17 words
The apparatus of claim 5 wherein each of said at least one knife blade is finely toothed.
Claim 9
Dependent Claim
35 words
The apparatus of claim 5 wherein there are at least two finely toothed knife blades such that the teeth of each knife is staggered with respect to the teeth of each of the remaining knives.
Claim 10
Dependent Claim
39 words
The apparatus of claim 8 wherein there are two knives on said rotating disc such that the teeth of one knife are staggered with respect to the teeth of the other knife over half the pitch of the teeth.
Claim 11
Dependent Claim
38 words
The apparatus of claim 3 wherein said second discharge means includes recycling means to recycle a portion of said washing liquid including solid particles therein and to maintain the temperature of said washing liquid at a predetermined temperature.
Claim 12
Dependent Claim
106 words
The apparatus of claim 10 wherein said recycling means includes: i. a first heat exchanger; ii. a first conduit connecting said discharge means to the inlet of said first heat exchanger; iii. a second conduit connecting the exit of said first heat exchanger and said discharge means; iv. a thermostat having its sensing probe located at the exit of said first heat exchanger and controlling the flow of heating medium there-through; v. a third conduit connecting said first conduit to said second conduit and adapted to bypass said first heat exchanger; and vi. means to feed said washing fluid from said second conduit to said column.
Claim 13
Dependent Claim
45 words
The apparatus of claim 11 wherein said second discharge means further includes a second heat exchanger located downstream of said first heat exchanger for melting said solid particles in said washing fluid and a discharge conduit connected to the exit of said second heat exchanger.
Claim 14
Dependent Claim
125 words
The apparatus of claim 12 wherein said discharge conduit includes a first automatically operated valve at the outlet end of which said discharge conduit divides into a first branch and a second branch; said first branch including a second automatically operated valve and said second branch including an adjustable overflow valve; first control means for closing said first automatically operated valve when said rotating disc is stationary and opening said first automatically operated valve when Said rotating disc is rotating; and second control means including a photoelectric cell for opening and closing said second automatically operated valve in response to the location of the washing front in said column such that the second automatically operated valve is opened when the washing front approaches said piston.
Claim 15
Dependent Claim
18 words
The apparatus of claim 13 wherein each of said automatically operated valves is a magnetically operated automatic valve.
Claim 16
Dependent Claim
79 words
The apparatus of claim 12 wherein said discharge conduit includes an automatically operated three-way valve and control means therefor, said control means including a compressed air operated cylinder having a first automatically operated three-way valve through which air at a reduced pressure can be admitted to the upper side of said air operated cylinder and a second automatically operated three-way valve through which air at atmospheric pressure can be admitted to the lower side of said air operated cylinder.
Claim 17
Dependent Claim
19 words
The apparatus of claim 15 wherein each of said automatically operated three-way valves is a magnetically operated three-way valve.
Claim 18
Dependent Claim
47 words
The apparatus of claim 15 wherein each of said first and second automatically operated valve associated with said compressed air operated cylinder is controlled by a photoelectric cell which is adapted to control said valves in response to the location of the washing front in said column.
Claim 19
Dependent Claim
191 words
Apparatus for the separation and purification of solids from a suspension and for leaching or lixiviation of solid particles comprising an impervious column closed at one end with a filter, said filter having at least one passage there-through for the supply of a suspension of solid particles in a liquid to said column and at least one passage for the removal of said liquid phase of said suspension from said column; an axially displaceable rotating disc having scraping means at the opposite end of said column for treating successive portions of said solid particles to thereby facilitate removal of the treated portion from the column; discharge means at said opposite end of said column for the progressive removal of said successive portions of said solid particles; and washing fluid supply means at said opposite end of said column for supplying washing fluid to said solid particles; said rotating disc being axially displaceable to thereby act as compacting means for compacting said successive portions of said solid particles during its axial displacement in the direction of said solid particles prior to treating said successive portions of said bed with said rotating disc.
Claim 20
Dependent Claim
191 words
Apparatus for the separation and purification of solids from a suspension and for leaching or lixiviation of solid particles comprising an impervious column closed at one end with a filter, said filter having at least one passage there-through for the supply of a suspension of solid particles in a liquid to said column and at least one passage for the removal of said liquid phase of said suspension from said column; an axially displaceable rotating disc having scraping means at the opposite end of said column for treating successive portions of said solid particles to thereby facilitate removal of the treated portion from the column; discharge means at said opposite end of said column for the progressive removal of said successive portions of said solid particles; and washing fluid supply means at said opposite end of said column for supplying washing fluid to said solid particles; said rotating disc being axially displaceable to thereby act as compacting means for compacting said successive portions of said solid particles during its axial displacement in the direction of said solid particles prior to treating said successive portions of said bed with said rotating disc.
References Cited (Backward Citations)
US2770533A
Cited
US2855100A
Cited
US2854494A
Cited
US2922701A
Cited
US3290891A
Cited
US3383228A
Cited
US3550775A
Cited
US3512940A
Cited
US3777892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |