| 摘要 |
PROBLEM TO BE SOLVED: To provide a positive displacement pump capable of freely setting a flowing direction of a fluid since sucking till discharging, and decrease its size.SOLUTION: A pump head is equipped with a plurality of branch flow passages 12 and 13 for branching off a fluid sucked from a suction port into a plurality of pump chambers; supply flow passages 14 and 15 for supplying the fluid branched off by the branch flow passages 12 and 13 into the corresponding pump chambers 8 and 9; a plurality of feeding flow passages 16 and 17 for feeding the fluid in the pump chambers 8 and 9; a plurality of aggregating flow passages 18 and 19 for aggregating the fluid in the feeding flow passages 16 and 17 to a discharge port 5B; first seat valves 20 and 21 provided in the supply flow passages; and second seat valves 22 and 23 provided in the feeding flow passages. |
