Distributor or drip emitter for the microirrigation of soils

摘要

The invention relates to a distributor or dripper for micro-irrigation of soils, comprising: - an envelope (7) constituting a chamber, provided with a supply orifice (4) (to be connected to a water pipe (10 ) under pressure) and an evacuation orifice (24), and - a shutter body of revolution (11) contained in the chamber and displaceable under the action of the movement of an irrigation liquid between seats formed in the envelope and respectively close to said orifices, as well as - means for returning the obturator body to its seat close to the supply orifice. According to the invention, the dripper is provided with a circular series of notches (30) capable of letting the irrigation liquid pass, while retaining particles (31) of determined particle size present in this liquid, while the body shutter (11) is applied to the seat (20 ') close to the discharge orifice (24), the shutter body (11) being arranged so that the aforementioned particles retained by the filtration notches (30) are discharged by the evacuation orifice (24) under the effect of the rinsing ensured by the aforementioned liquid during the displacement of the obturator body (11) of the seat (20 ') close to the evacuation orifice (24) towards the seat ( 14) close to the supply orifice (4) in the above-mentioned chamber and vice versa.