| 摘要 |
PURPOSE:To both completely prevent pulsation of a pump during its operation and simplify its construction, by fixing eccentric cams to both sides of an output shaft under a condition such that the cams are arranged eccentrically for the output shaft further in 180 deg. phase difference from each other. CONSTITUTION:Eccentric cams 5, 5' are respectively fixed to both sides of an output shaft 4, and said cams 5, 5' are arranged in an eccentric position with respect to the shaft 4 while in 180 deg. phase difference from each other. In this way, the sum of speeds in an acceleration section of one pump head side and in a deceleration section of the other pump head side can be always fixed, further the speed can be aligned to a speed of a uniform speed section in the one pump head side, still further acceleration can be zeroed at a moment of delivery start and finish times and finish time of the acceleration section and start time of the deceleration section. Accordingly pulsation of a pump during its operation can be prevented while its construction can be simplified. |
