DROPPER Russian patent published in 2006 - IPC A01G25/02 

FIELD: agriculture, in particular, drop irrigation equipment.

SUBSTANCE: dropper has casing with inlet and outlet branch pipes and float mounted within casing and equipped with locking member. Casing internal surface is provided with helical channel having trapezium-shaped section. Locking member is made in the shape of membrane formed as hollow truncated cone and joined with casing internal surface. Membrane is fixed by means of stop rings on lower cover of casing and inlet branch pipe. Membrane is preliminarily axially loaded and located in casing cavity. Float made in the form of hollow ball is located within membrane cavity. With filled membrane cavity and casing, float is joined to belt having surface formed as spherical belt at lower cut of inlet branch pipe. Inlet branch pipe is fixed on upper cut of casing through pair of half-circles and upper threaded cover. Lower cover is equipped with channel for connecting membrane cavity with casing helical channel. Radially extending outlet branch pipes are positioned on upper part of casing and are formed as single member.

EFFECT: enhanced reliability in operation and increased efficiency owing to uniform supplying of irrigation water through outlet branch pipes to injectors.

4 cl, 1 dwg