Pumps – Processes – Of pumping one fluid by contact or entrainment with another
Patent
1978-05-15
1980-07-08
Croyle, Carlton R.
Pumps
Processes
Of pumping one fluid by contact or entrainment with another
417103, 417900, F04F 1100
Patent
active
042115183
ABSTRACT:
An arrangement for hydraulically conveying solids of different specific weights in form of slurries has at least two elongated chambers the effective length of each of which may be varied in dependence on the specific weight of the solid component of the slurry supplied to the respective chambers. The slurry is cyclically fed into the chambers at substantially atmospheric pressure, and when the respective chamber is full pressurized hydraulic fluid, such as water, is utilized for discharging the slurry from the full chamber into a discharge conduit. The arrangement includes a device which measures the specific weight of the solid component and varies the length of the respective chamber in dependence on the measured specific weight. A plurality of valves controls the admission of the slurry and of the pressurized hydraulic fluid into the respective chambers so that, when one of the chambers is being filled with slurry, another chamber is discharged into the discharge conduit. The whole effective length of the respective chambers is used for conveying coal particles whereas the shortened effective length is used for conveying rock particles. A method is also disclosed.
REFERENCES:
patent: 2949027 (1960-08-01), Eolkin
patent: 2989227 (1961-06-01), Statham
patent: 3556682 (1971-01-01), Sakamoto et al.
patent: 3938912 (1976-02-01), Sakamoto et al.
Croyle Carlton R.
Look Edward
Ruhrkohle AG
Striker Michael J.
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