DROPPER Russian patent published in 2006 - IPC A01G25/02 

FIELD: agricultural amelioration, in particular, drop irrigation equipment used for irrigation of horticulture crops, grape, berry fields, cucurbitaceous and vegetable crops.

SUBSTANCE: dropper has casing with cover comprising inlet and outlet openings, membrane located within casing and adapted for cooperation with casing lower surface in case pressure is created in casing, and supporting platform made in the form of figure of rotation. Dropper is provided with float, additional membrane and spacer ring. Main and additional membranes are made in the form of planar rings with drain aperture offset toward edge at smaller diameter. Membranes device space defined between cover and casing into cavity arranged above membrane, cavity arranged between membranes, and cavity arranged under membrane. Float is formed as hollow sphere. Float is adapted for free displacement. Spacer ring is provided between main and additional membranes. Each of said membranes is positioned for displacement through the height of supporting platform. Supporting platform is formed as hollow truncated cone. Slot in small base of cone is formed as segment of sphere. Radius of sphere of said segment exceeds radius of float sphere.

EFFECT: enhanced reliability in operation and provision for creating uniform droplets regardless of water pressure in distribution main.

3 dwg