| 摘要 |
PROBLEM TO BE SOLVED: To provide a bellows pump capable of relieving a water hammer phenomenon. ! SOLUTION: A bellows pump includes a pump body 4 having a suction flow path 6 and a discharge flow path 7, a bellows 10 configured to be able to expand and contract so as to suck fluid from the suction flow path and discharge the fluid to the discharge flow path, a movable body 26 connected to an expansion and contraction direction one end 13 of the bellows and configured to be able to move in a direction approaching and separating from an inner surface 17 of the pump body so as to expand and contract the bellows, a driving device capable of moving the movable body, a suction side check valve 23 allowing only the flow of the fluid directing from the suction flow path into the bellows, and a discharge side check valve 24 allowing only the flow of the fluid directing from the inside of the bellows to the discharge flow path. In the bellows pump, a cushion member 38 for reducing expansion speed of the bellows is p |
