Dripper for drip irrigation, and drip-irrigation device provided with same

摘要

A dripper for drip irrigation according to the present invention comprises a first member and a second member that are formed integrally from a resin material, and includes an inter-member flow passage formed between the members. The first member is provided with a first plate and a pipe that guides an irrigation liquid, which flows in from an inflow part, to the inter-member flow passage. The second member is provided with a second plate and a discharge port. The first member is further provided with a flow regulation valve that regulates the flow of the irrigation liquid, and the second member is provided with a flow-volume control valve that controls the flow volume of the irrigation liquid.

主权项

1. A drip irrigation dripper configured to perform drip irrigation by controlling an ejection amount when ejecting irrigation liquid flowing from an inflow part out of an ejection port, the drip irrigation dripper comprising:
a first member integrally formed of a resin material on the inflow part side; and a second member integrally formed of a resin material on the ejection port side, the first member and the second member being brought into close contact with and fixed to each other, wherein: the first member includes: a first plate-like part having a first inner surface brought into close contact with the second member and a first outer surface opposite to the first inner surface, and a tube part being protruded from the first outer surface of the first plate-like part and having the inflow part being formed, the tube part configured to guide the irrigation liquid flowing from the inflow part to an inter-member channel, and the second member includes: a second plate-like part having a second inner surface brought into close contact with the first inner surface and a second outer surface opposite to the second inner surface, and the ejection port, the first member further includes a flow regulating valve part disposed to be exposed to the first inner surface side to block a downstream end inside the tube part, the flow regulating valve part configured to regulate a flow of the irrigation liquid guided by the tube part toward the ejection port at a lower limit of a liquid pressure of the irrigation liquid, or the inter-member channel being formed between the first member and the second member, the inter-member channel having surface shapes of close contact surfaces of both the members and being in communication with the inflow part and the ejection port, and the second member further includes a flow rate controlling valve part configured to control a flow rate of the irrigation liquid having reached a downstream end of the inter-member channel toward the ejection port.