| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jet pump of pressing-down head type with a restoration mechanism of excellent restoration force for pumping a liquid in a good manner and demonstrating the good jet function, which can be formed of a material requiring no classification treatment of synthetic resins and the like in place of a metal coil spring used heretofore as a mechanism for restoring the pressing-down operation of an actuating component composed of a pressing- down head and the like. SOLUTION: A cylindrical section 10 of a low end opening is formed on the lower section of a cylinder 5, and a movable seal section 12 is fitted slidably on the upper part in the cylindrical section 12 to form a sealed air chamber R above the movable seal section, and an actuating component B is connected with the slidable seal section 12, and the movable seal section 12 is lifted by generating the negative pressure by the expansion of the air chamber R and the actuating component B is lifted and restored. |
