How to stabilize the metering pump flow and measurement accuracy
    The reciprocating movement of the plunger in the diaphragm metering pump is transmitted to the diaphragm through the fluid in the hydraulic chamber between the plunger and the diaphragm. In order to maintain the desired diaphragm motion, the volume of fluid (typically hydraulic fluid) in the confined space of the hydraulic chamber So as to ensure that the diaphragm formed by the movement of the volume is always equal to the plunger stroke volume in order to maintain the stability of the pump flow; but in the actual pump operation due to the plunger seal will inevitably produce leakage, at the same time may There is gas into the hydraulic chamber.In addition, when the oil is too much or discharge line pressure unexpectedly increased when the hydraulic chamber may change the volume of liquid, thus affecting the flow stability, reducing the pump metering accuracy.In order to solve the problem of how to measure Pump flow, how to stabilize the measurement accuracy of metering pumps, the use of the so-called three-valve device actually refers to the hydraulic chamber supporting the compensation, deflation, safety protection and other three functions of the device or device combination, according to its role The principle of the difference is divided into automatic compensation and forced compensation of two three-valve device. Automatic compensation of the three-valve device in the diaphragm metering pump is widely used, especially in the suction height requirements of the only use of such compensation device. Three-valve device consists of three separate Fujian (safety valve, deflation valve and Fill valve) composition. Packaging Film,Nylon Packaging Film,Interior Packaging Film,Membrane Bopa Plastic Packaging HUARUIDA PACKING MATERIAL CORP., LTD. , https://www.buybopp.com