| 摘要 |
PROBLEM TO BE SOLVED: To provide an excellent liquid ejection pump that does not cause leaking, is entirely made of synthetic resin to eliminate the need for segregative disposal, exhibits an excellent pump function similar to those of conventional ones, and allows a reduction in the number of parts and a cutdown in costs. SOLUTION: A stem 5 and a push-down head 7 on the stem 5 are supported on a bellows pipe 24, and a valve disc 26 having a special construction is integrally molded of synthetic resin into one piece with the bellows pipe 24 via a coil spring 25 to form a suction valve 27. A rotation preventive mechanism A is provided to allow the stem 5 to move up and down but not to turn, and a nozzle 6 is opened and closed by the rotation of the push-down head 7 on the stem 5. In addition, with the push-down head 7 staying in pulled-up state, a detachable spacer 41 is fitted at the lower part of the head 7. |
