| 摘要 |
PROBLEM TO BE SOLVED: To keep uniform a discharge amount per liquid/fluid sending time, in a piston pump which moves a piston 2 in one direction and a reverse direction, and continuously sends liquid or fluid.SOLUTION: A piston 2 is moved to one direction, and liquid or fluid is discharged from a rod end 9 and discharged to a discharge passage 13. After that, the piston 2 is moved to a reverse direction, and the liquid or the fluid is discharged from the rod end 9 and discharged to the discharge passage 13. Furthermore, when the piston is moved to one direction, the piston 2 is moved at a first speed, and when the piston is moved to the reverse direction, the piston 2 is moved at a second speed, and the first speed is set higher than the second speed. |
