FIELD: manufacturing technology.
SUBSTANCE: drainage of outlet irrigation pipeline includes hole in pipeline wall, water outlet, elastic diaphragm as mesh filter, spring, housing, and outlet openings. Each water outlet comprises rod and body with water outlet holes, and float arranged in chamber. Upper and lower layers of float represent equal-sized flat rings, between them there is porous permeable material. Rod is rigidly connected to bottom of housing. Concentrically to rod there is float to displace in guide made at surface of rod in spiral groove with which contact pin is fixed on float. Float can be shaped to trapezoid.
EFFECT: high reliability.
2 cl, 1 dwg
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