Electromagnetic diaphragm metering pump is a type of metering pump, metering pump is a special volumetric pump can be measured fluid being delivered. It is generally composed of the control section, the drive section, the transmission section and the overcurrent section. The difference between the electromagnetic diaphragm metering pump and other metering pumps is mainly the driving section. Electromagnetic diaphragm metering pump is a metering pump driven by electromagnet and designed for conveying low pressure and low pressure pipeline liquid. It is popular in the industry due to its simple structure, low energy consumption, accurate measurement and easy adjustment The design principle of "simple and practical", but its disadvantage is that the measurement of small flow (usually 90L / h below), the pipeline pressure is relatively low, which in some ways limits its industrial applications. The world's first electromagnetic diaphragm metering pump was designed and manufactured by the U.S. company Milton Bar in 1985, and several other foreign brands have since been manufactured, either domestically or domestically, and the quality is still relatively reliable. In 1997, the first truly domestic electromagnetic diaphragm metering pump with independent intellectual property rights was produced by Beijing Ark Express Company, breaking the monopoly of the foreign market by the market. Electromagnetic diaphragm metering pump mainly in the quality of the following areas: 1, diaphragm: As the metering pump is generally delivered by corrosive liquids, so for direct and liquid contact with the diaphragm has a high anti-corrosion requirements . 2, the pump head: pump head is the over-current part of the fluid being measured, its quality is generally good or bad in the performance of sealing, corrosion resistance, structural stability. 3, the circuit board: circuit board generally does not exist the problem of process design, but the digital circuit and the analog circuit, the main quality performance in the tightness, because the circuit board can not enter the water vapor.
