Reciprocating pumps convert rotary motion to linear motion. Pump speed in RPM determines the pumps output volume for any given combination of cylinder bore and piston stroke.
循环泵将曲轴旋转运动转化为柱塞的直线运动。泵速转每分钟决定了任何气缸和活塞组合的排泵量。
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Rotarypistonpump is a volume type vacuum pump and is applied widely, but there has been no method for exactly calculating dynamic balance of rotarypiston up to the present.