Filter for separating solid bodies from a fluid stream

Details Filter for separating solid bodies from a fluid stream Filter for separating solid bodies from a fluid stream

1980-07-11

1982-01-19

Wyse, Thomas G.

Liquid purification or separation

Filter

Movable prefilt distributor

210421, 210456, B01D 3522

Patent

active

043115918

ABSTRACT:
A filter for separating solid bodies such as fish from a liquid stream such as flowing water to be used as a coolant for a power-generating plant comprises a cylindrical housing, an inlet conduit attached to a cylindrical wall of the housing substantially radially thereto, a first outlet conduit connected to a bottom end of the housing for drawing off filtrate, a second outlet conduit connected to the cylindrical housing wall opposite the inlet conduit for channeling away fish-laden effluent, a wedge disposed at the junction of the inlet conduit and the housing for dividing an incoming fluid stream into two equal portions, a filter sieve eccentrically disposed in the housing for forming therewith an annular filter chamber including tapered chamber halves of decreasing width in the direction of fluid flow, and a pair of independently actuatable gate flaps swingably mounted on the wedge for pivoting between respective closed positions engaging the housing and respective fully open positions engaging the sieve. The housing is provided with a trap region at the solids outlet, a plurality of pipe sections connecting the annular filter chamber to the second outlet conduit; the pipe sections contribute to creating eddies at the solids outlet at least in part for cleaning the outer sieve surface during a steady-state operation of the filter. Further steady-state turbulence may be induced by the formation of projections at the free ends of the gate flaps.

REFERENCES:
patent: 3789992 (1974-02-01), Treplin et al.
patent: 3828930 (1974-08-01), Eimer et al.
patent: 3875063 (1975-04-01), Treplin et al.
patent: 4202777 (1980-05-01), Schall

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