DRIPPER Russian patent published in 2003 - IPC

FIELD: agronomic amelioration. SUBSTANCE: dripper has casing mounted in moistener opening and regulator located in casing. Regulator is made in the form of float valve with single upper locking needle formed as pyramid fixed on valve upper surface. Locking needles are also provided in valve bottom part. In the initial position, locking needles in bottom part of valve are connected to discharge openings in moistener casing. Moistener is made in the form of pair of U-shaped bends. Labyrinth channels are formed on internal surface of each bend. Each labyrinth channel is defined by ridges and slots arranged in alternation. U-shaped bends are defined by aligning of core parts manufactured from water-permeable material. Core is located inside injector cavity. EFFECT: increased efficiency by uniform distribution of irrigation water for irrigating agricultural crops. 2 dwg