| 摘要 |
A pump having at least one pumping chamber (15) with uni-directional inlet and outlet valves (16, 17) for pumping a fluid in one direction. An auxiliary fluid is provided in a branch tube (10) opening into each pumping chamber (15), forming an interface (30) with the fluid being pumped in the branch tube (10). Reciprocation of the auxiliary fluid causes alternating suction and discharge action in the pumping chamber. |
