WATER-DISCHARGE DEVICE FOR SURFACE SPRINKLING MACHINE Russian patent published in 1999 - IPC

FIELD: agriculture. SUBSTANCE: water-discharge device, which may be used in front overhead machine adapted for surface sprinkling at constant height of 0.1-0.6 m from ground surface, has water passages made in pressure pipeline wall and gaged for predetermined flow rate. Threaded connecting pipe is secured adjacent to each water passage. Nozzle formed as inverted cup is screwed into each connecting pipe. Water passage opening is made in nozzle bottom and air admission openings are made in diametrically opposed side walls of nozzle. Flexible thin-walled pipe with dead lower end is attached to nozzle. Flexible pipe has sprinkling perforations which are arranged in rows and staggered within each row. Perforations are made slit-shaped and extend from the top to the bottom at an angle to longitudinal axis of flexible pipe. Perforations have rounded lower ends. Optimum size ratio of members of water discharge device are given in Specification. Such construction of water-discharge device allows water to be intensively saturated with air promoting vital activity of aerobic bacteria which keep up soil fertility. EFFECT: enhanced reliability in operation and improved surface sprinkling quality. 3 dwg