DROP-TYPE DRAINAGE OUTLET Russian patent published in 2004 - IPC

FIELD: agricultural amelioration, in particular, drop irrigation.

SUBSTANCE: drop-type drainage outlet has casing with upper and lower chambers. Casing is equipped with float valve, inlet and outlet openings. Upper and lower chambers are isolated from one another by membranes, which define additional cavity arranged in casing and equipped with float valve. Float valve is made in the form of geometric body defined by spherical surfaces. Body in the form of sphere has convexity and depression in the form of spherical segments of equal volume. Surfaces of convexity and depression are equally spaced from one another. Slots are formed at outer sphere and float valve depression intersection site. Membranes are provided with gauged openings. Lower membrane has additional central opening. Peripheral annular edges of membranes are fixed between ends of threaded covers and casing. Float valve is made from material having density less than 0.25 t/m³, for example, from cork.

EFFECT: increased efficiency, precise strictly dosed supplying of irrigation water in drop irrigation system.

3 cl, 4 dwg