Rotary screw fish collector

Details Rotary screw fish collector Rotary screw fish collector

1989-08-02

1990-05-29

Jones, W. Gary

Liquid purification or separation

Structural installation

Flume stream type

210156, 210161, 2102421, 210354, B01D 3302, B01D 3502

Patent

active

049293508

ABSTRACT:
A porous, conical structure for submersion in a body of water for rotation by water action. A screw blade in the structure confines as well as propels fish toward an outlet end of the porous structure. A support structure for the porous, conical structure may be embodied in a buoyant platform while a modified form of the collector utilizes a permanent ground supported structure. A receptacle is provided at the outlet end of the porous, conical structure for reception of fish and other collected matter. The receptacle may be a walled structure or the end of a bypass conduit enabling diversion of the collected matter and water away from the body of water. A lift and pivoted bearing permit elevating of porous, conical structure from the body of water.

REFERENCES:
patent: 1516693 (1924-11-01), Anthony
patent: 3151068 (1964-09-01), Long et al.
patent: 3527349 (1970-09-01), Lynch
Conlin and Tutty, "Juvenile Salmonid Field Trappind Manual", Fisheries and Marine Service Manuscript Report #1530, Aug. 1979, Dept. of Fisheries and Oceans, Vancouver B.C.
Humphreys, Game Biologist, Oregon State Game Commission, "Self-Cleaning Downstream Migrant Trap", Jul. 1967.
Stone and Webster Engineering Corp., "Assessment of Downstream Migrant Fish Protection Technologies for Hydroelectric Application", Sep. 1986, EPRI AP-4711.
Bates, "Diversion and Collection of Juvenile Fish with Traveling Screens", U.S. Dept. of the Interior, U.S. Fish and Wildlife Service, Fishery Leaflet 633 3/1970.

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