TRIPLEX PULSELESS METERING PUMP AND CONTROL METHOD USING CONSTANT VELOCITY CAM

摘要

A triplex pulseless metering pump and a control method using a constant velocity cam are provided to transfer fluid stably without vibration by sequentially driving first through third bearings so that the flow rate at the intake/discharge pipe has pulseless waveform. A triplex pulseless metering pump comprises a constant velocity cam(10) which is combined with a motor and a cam shaft(11) whose both ends are supported by a ball bearing(111); a housing having an upper through hole(21) and three bodies(22) arranged at the angle of 120°, including side through holes(221); first to third transmission bearings(31,31a,31b) inserted into the respective three bodies, forming a contact point with the constant velocity cam, and combined with first to third sliders(30,30a,30b); first to third springs(32,32a,32b) inserted into the respective sliders; a head unit(40) powered by the motor and having an inlet(41) and an outlet(42); and a transfer unit which is combined with the inlet and the outlet and transfers the fluid.