DRIP IRRIGATION EMITTER AND DRIP IRRIGATION DEVICE EQUIPPED WITH SAME

摘要

A drip irrigation emitter (1), which comprises a low pressure stop filter (5), a pressure reduction channel (8), and a diaphragm (10), is disposed on the inner wall surface of a flow pipe (3) through which the irrigation liquid flows. The low pressure stop filter (5) has a hydrophobic surface and prevents inflow of the irrigation liquid when the fluid pressure is lower than an established value. The pressure reduction channel (8) reduces the pressure of the irrigation liquid. The diaphragm (10) changes the degree of opening of the pressure reduction channel (8) according to the fluid pressure of the irrigation liquid. The drip irrigation emitter (1) can be manufactured at low cost as a result of being a one-piece molding. The drip irrigation device comprising the drip irrigation emitter (1) stably ejects the irrigation liquid even when the liquid pressure is low.

主权项

1. A drip irrigation emitter for controlling an amount of irrigation liquid ejected through an ejection port of a flow pipe through which the irrigation liquid flows, the ejection port extending through a pipe wall of the flow pipe, the drip irrigation emitter comprising:
a flow channel that allows the irrigation liquid to flow from an inside of the flow pipe to the ejection port when the drip irrigation emitter is disposed at a position corresponding to the ejection port in an inner peripheral surface of the flow pipe; an inflow part for introducing the irrigation liquid in the flow pipe into the flow channel; a pressure reduction channel part disposed on a downstream side relative to the inflow part in the channel, the pressure reduction channel part being configured to define a pressure reduction channel, the pressure reduction channel being configured to allow the irrigation liquid entered from the inflow part to flow therethrough toward the ejection port while reducing a pressure of the irrigation liquid; a first plane to be connected to the inner peripheral surface of the flow pipe; and a second plane to be located on a central axis side of the flow pipe relative to the first plane, wherein the inflow part is disposed at the second plane, has hydrophobicity, and prevents the irrigation liquid having a liquid pressure lower than a predetermined liquid pressure from introducing into the flow channel.