| 摘要 |
The invention refers to conventional emitters with a path for the water pressure drop which consists of repeated parts of a basic prismatic form (1) which is contained within convex (1b) and concave (1a), almost cylindrical in shape surfaces, at right angles to the base (2), which converge to a perpendicular edge (3). In the regions of the convave surfaces, cylindrical craters (4) are raised from the bottom, half way along the emitter height, forming hydrocyclones. Prismatic wedge-shaped forms (5) are also developed radially from the base along half of the emitter height. As far as the self-compensating emitters are concerned, our invention refers to an arrangement for water filtering at the inlet of the emitter which consists of an elastic membrane (24) which covers peripherally the mouths of a closed cavity (33) with radially engraved channels (18) of a small depth. Self-compensation is achieved in successive stages and in several cavities (31, 33) of the path by a combination of a couple of holes for the inlet and outlet of the water into the cavities and of a membrane. The membrane (24) balances at same height above all of the cavities and water paths which are arranged in series. |
