REGULATED FLOW LIMITING DEVICE, ESPECIALLY USEFUL AS A DRIP IRRIGATION EMITTER.

摘要

A PARTICULARLY REGULATED FLOW RESTRICTING DEVICE USEFUL AS A DRIP IRRIGATION EMITTER INCLUDES A HOUSING (20) THAT HAS AN INLET OPENING (23), AN OUTLET OPENING (24) AND A FLOW RESTRICTING PASS, INCLUDING 28 DEFLECTORS 29) THAT DEFINE SPACES WITH THE WALLS OF THE PASSAGE, WHOSE SPACES, BY THE DISPLACEMENT OF A DISPLACABLE WALL IN THE FORM OF AN ELASTOMERIC MEMBRANE (31), VARY THE RESISTANCE OF THE FLOW OF A LIQUID THROUGH THE PASSAGE IN RESPONSE TO THE VARIATIONS IN THE PRESSURE OF THE PRESSURIZED LIQUID. THE SPACES ARE OF INCREASED HEIGHT IN THE DIRECTION FROM ONE OF THE OPENINGS (23,24) TO THE OTHER OF THE OPENINGS (23,24) SUCH AS THE SPACES ARE SEQUENTIALLY CLOSED WITH THE PRESSURE INCREASE IN THE PRESSURIZED LIQUID TO MAINTAIN A FLOW UNIFORM SUBSTANTIALLY TO AND THROUGH THE ACCOMMODATION OUTLET OPENING (24) DESPITE VARIATIONS IN THE PRESSURE OF THE PRESSURIZED LIQUID.