DEVICE FOR LIFTING DEEP WATER Russian patent published in 1994 - IPC

FIELD: biology. SUBSTANCE: device comprises vertical lifting pipe with float on the top which latter has grooves arranged radially and inclined to groove draining side, blade screw assembled in pipe and driven by wind motor, and an additional pipe enveloping lifting pipe and forming a circular channel for the passage of water. Float and weight are fastened, respectively, to upper and lower parts of said additional pipe so that grooves are arranged above water level in water basin. In operation, water is caught by blade screw, flows through lifting pipe to grooves and is drained onto surface of water basin. Simultaneously, water from deep layers rises through circular channel so that two streams of water meet on water basin surface and are spread over water area. EFFECT: higher biological productivity of water basin. 1 dwg