DEVICE FOR WATER INTAKE FROM SURFACE SOURCES Russian patent published in 2017 - IPC E02B9/04 E03B3/04 

FIELD: agriculture.

SUBSTANCE: invention relates to the field of water intake from surface sources, and can be used in water recycling systems of concentrating plants, mining industry, located in areas with harsh climatic conditions. The device comprises a float 1 with a floating base 2 made with the profile with the convex side close to form of placement and attachment to the Venturi pipe 3. The narrowest section of the Venturi pipe 3 is communicated to the air intake device configured made in the form of a vertical tube 6 with a check valve 7 for water enrichment with atmospheric air. The water flows from the pump 8 into the flexible plastic tube 9, then enters the Venturi pipe 3, forming the water-air mixture in the attached perforated annular flexible tube 11 made of polyethylene material. The perforated annular tube 11 is fixed rigidly by the rods to the lower generatrix side of the water intake chamber 12. The trash screen 16 is mounted on the device contour. The holes 17 of the perforated tube 11 are provided with nozzles 18 placed towards the screen 16 around the water intake chamber 12. The nozzles 18 are designed for the injected medium in the form of a water-air mixture flowing through the Venturi pipe 3 in the perforated annular tube 11. When installed in the water flow and the pump 8 operation in the Venturi pipe a vacuum is created, so that air suction occurs through the vertical tube 6 with a check valve 7 of the air intake device and the water is enriched with atmospheric air with oxygen. Between the pump 8 and the flexible plastic tube 9 a corrugated mounting insert 10 is inserted, designed as a flexible hose, which is placed above the water's edge 15. The jets flow by means of the kinetic energy of their high-speed initial sites towards the screen 16 and prevent sticking and accumulation on it of fibrous structures, debris, algae, as well as sticking of young fish.

EFFECT: simplification of the operation of the device structure, increase in reliability and efficiency of the screen protection.

3 cl, 1 dwg