| 摘要 |
The invention relates to a first addition certificate applied to French Patent No. 87 03602 relating to a self-regulation device for micro-sprinkling. It is constituted by the combination firstly of a hollow body (1) with a bottom equipped with an upstream connection nozzle intended for the arrival of the fluid, and then of a threaded element (30) which screws into said body, is passed through by a boring (11) parallel to the thread axis, and brings the interior of the hollow body into communication with a downstream connection nozzle, the threaded part ending opposite the nozzle in a plane surface which is parallel to the bottom of the hollow body and equipped with a groove (33), the shape and the length of which are determined by the desired flow and which connects the end of the boring to a recess situated at the periphery of the threaded element, and lastly of a flexible diaphragm situated between the bottom of the hollow body and the plane surface of the threaded element. It is intended to ensure perfect regularity of flow of a jet, whatever the pressure differences undergone by the fluid, and relates to functional modifications which make it possible on the one hand to utilise the device for a greater range of flows, while maintaining a very plane regulation curve, and on the other hand to connect a pipe or a network downstream of the self-regulating system. <IMAGE>
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