| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a trigger type liquid jet device that achieves a reduction in the number of empty jetting times at the time of initial operation to easily perform the air venting operation within a pump, clearly judges functional confirmation after production and smoothly and uniformly jets a liquid during use. <P>SOLUTION: A pressure accumulation type discharge valve 53, which is constituted so as to bring a discharge valve body G always energized to an upstream side into contact with a discharge valve seat 40 to demarcate a closed region with respect to a suction valve 23 provided at an upstream position, is provided in an injection cylinder 12 which constitutes a part of a liquid flow channel and has a nozzle J fitted to its leading end and an air venting groove 41 is provided to at least one of the discharge valve seat 40 and the discharge valve body G so as to allow the upstream and downstream parts thereof to communicate with each other. <P>COPYRIGHT: (C)2009,JPO&INPIT |
