公开(公告)号：US5535778A

公开(公告)日：1996-07-16

申请号：US328889

申请日：1994-10-25

Applicant: Abi Zakai

Inventor： Abi Zakai

IPC: A01G25/16 ,  F16K21/06 ,  F16K21/16

CPC classification number: A01G25/16 ,  F16K21/06 ,  Y10T137/7785

Abstract: A self-closing valve for flushing drip-irrigation lines at the beginning of every irrigation cycle. The valve comprises a housing defining an enclosed space, having an inlet portion mountable to the line end, allowing free communication with the water of the line. The housing comprises an elastic membrane dividing the enclosed space into upstream and downstream compartments with respect to said flow, with a passage communicating between the said compartments. A discharge opening is formed in the upstream compartment. Flow impeding means are associated with said passage for restricting the flow of water from the upstream compartment into the downstream compartment, said flow being effective to flex the membrane in the upstream direction until it closes against the discharge opening.

Abstract translation: 在每个灌溉周期开始时，自动关闭阀门用于冲洗滴灌线路。 阀包括限定封闭空间的壳体，具有可安装到管路端的入口部分，允许与管线的水自由连通。 壳体包括弹性膜，其将封闭空间相对于所述流分隔成上游和下游隔室，通道在所述隔室之间连通。 排水口形成在上游隔室中。 阻流装置与所述通道相关联，用于限制从上游隔室进入下游隔室的水流，所述流动有效地使膜沿上游方向弯曲，直到其抵靠排放口闭合。