DROPPER Russian patent published in 2006 - IPC A01G25/02 

FIELD: irrigated agriculture, in particular, irrigation of perennial grasses of fruit and tree plantations.

SUBSTANCE: dropper has casing and cover with inlet and outlet branch pipes, respectively; throttle and elastic compensator. Throttle is made in the form of double lens and is manufactured from cork having density less than 0.2 t/m³. Elastic compensator is equipped with set of equally spaced openings provided on its peripheral part. Casing and cover have depressions in the form of spherical segments having radius of sphere equal to radius of sphere of convexo-convex lens. Depressions are provided on cover under inlet branch pipe and on casing above inlet branch pipe. Cover and casing are furnished with threaded connection. Dropper is equipped with additional throttle located above inlet branch pipe within casing cavity, which is arranged concentrically to annular cavity of casing. Said cavities are closed with elastic compensator whose peripheral annular edge is fixed by annular belts on joined ends of casing and cover. Annular cavity is hydraulically communicating with casing cavity through slots oriented in maximally useful directions. Slots are provided on upper edge of chamber.

EFFECT: provision for uniform dispensing of irrigation water at wide range of pressure fluctuations in drop irrigation system main.

2 cl, 1 dwg