| 摘要 |
PURPOSE:To make extraction executed certainly within a specified period of time by a method wherein a bellows provided on the front end of an extraction pipe extending from a soft container is held between a pair of contraction/expansion reciprocating movement holding mechanisms provided to a dispenser, and an opening/shutting pressing means that opens and shuts the extraction pipe in specified directions in interlocking with the aforementioned mechanism is provided. CONSTITUTION:The upper and the lower ends of a bellows 14 provided to an extraction pipe 13 extending from a bellows-equipped soft container 10 are held to the inside of an upper and a lower holding mechanisms 21a and 21b of a contraction/expansion reciprocating movement holding mechanism 21, and pumping function is developed by contraction and expansion movement of this mechanism 21. A pair of opening/shutting pressing means 22 are provided to a location near the holding mechanisms 21a and 21b, and the extraction pipe 13 is made thereby to open and shut in interlocking with the movement of the holding mechanism 21. Namely, during the contraction stroke of the holding mechanism 21, the upper opening/shutting pressing means 22 shuts, while the lower opening/shutting pressing means 22 opens the extraction pipe 13 and thereby the liquid in the bellows 14 is discharged. Contrary to this, during the expansion stroke, the upper means 22 opens while the lower means 22 shuts, and thereby the liquid is sucked to the inside of the bellows 14. |
