Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent
1977-09-26
1979-12-04
Hart, Charles N.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Flow control
210154, 193 11, 119 3, F02B 808
Patent
active
041769848
ABSTRACT:
In a water screening installation, a traveling water screen removes both refuse and aquatic life from a stream. The aquatic life, such as fish and shrimp, are uplifted in pans that are mounted on an ascending run of the screen. At a location above the stream, the pans are gently flushed by a low pressure spray of water. The fish are then returned to the stream, as soon as practical, to keep the mortality rate at a minimum. Each of the pans has an inner side that is parallel to a screen tray within the traveling water screen. This inner side is also tangential to a curved bottom portion of the pan. Extending tangentially from the opposite side of the curved bottom portion of the pan is an outer side that has a continuing profile at or below an extended tangential line from the point where the outer side is tangential to the curved bottom portion. A spray of water that is directed against the inner side of the pan is deflected to flow smoothly about the curved bottom portion and the outer side of the pan to a discharge lip that curves from the outer side in a direction reverse to the curved bottom portion. Water standing in the pan together with any fish therein are drawn along with the deflected spray water undercurrent.
REFERENCES:
patent: D40106 (1909-06-01), Yacoobian
patent: 1207376 (1916-12-01), Davidson
patent: 1208655 (1916-12-01), Reynolds
patent: 1514673 (1934-11-01), Roddy
patent: 1910860 (1933-05-01), Savers
patent: 2102570 (1937-12-01), Lind
patent: 2804209 (1957-08-01), Carlton et al.
patent: 2851162 (1958-09-01), Bleyer
patent: 2922282 (1960-01-01), Dohrer
patent: 4064048 (1977-12-01), Downs et al.
Edwards J. W.
FMC Corporation
Hart Charles N.
Sadowski David R.
Verhoeven J. F.
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