What is a dosing pump? What is a variable pump? Quantitative pump and variable pump What is the difference? This article mainly from the quantitative pump and variable pump working principle, use, performance comparison of the three aspects to introduce the difference between the quantitative pump and variable pump. With the booming pump industry now, the development of dosing pumps and variable displacement pumps has also been tempered. The quantitative pump and the variable pump have similar functions in many fields, but the quantitative pump is different from the variable pump. It is necessary to know the difference between the fixed pump and the variable pump in practice. Variable pump and fixed pump difference (Asia Fluid Network) 1, the quantitative pump working principle and the variable pump working principle of the difference between the principle of quantitative pump: the use of the diaphragm before and after the action of the diaphragm and the pump head causes the ball valve up and down movement between the formation of vacuum adsorption and push Squeeze phenomenon to achieve the purpose of liquid delivery. Variable displacement pump principle of work: In the case of the same motive motor rotation, by changing the variable mechanism, such as axial piston pump tilting direction or compression ratio of the displacement method. So, the working principle of the variable displacement pump and the variable displacement pump is different. 2, the difference between the use of quantitative pumps and variable pumps The purpose of quantitative pumps: for melting magnesium alloy melting furnace, a quantitative supply of magnesium alloy liquid for die-casting use. Variable pump purposes: for metallurgy, mining, engineering machinery, ships, civil aviation ground equipment and other areas of hydraulic transmission. So, the purpose of the dosing pump and the variable pump is different. 3, quantitative pump performance characteristics and variable pump performance characteristics of the difference between quantitative pump performance characteristics: provide customers the scope of the liquid supply capacity, the flow rate and stability. Variable pump performance characteristics: high volumetric efficiency, smooth operation, good flow uniformity, low noise, high working pressure, but more sensitive to the hydraulic oil pollution, the structure is more complex, higher cost. Today's quantitative and variable displacement pump products rely on advanced technology, industry, materials and scientific management methods, such pumps have a higher stability and reliability, in promoting the development of the national economy, it contributes a very important force . It is believed that expediting the research on dosing pumps and variable pumps will not only create a better future for the pump industry but also speed up the economic development in our country. (This article is published by Asia Fluid Network Editor, please indicate Asia Fluid Network, Promotion Service Hotline:, QQ:,20170326)
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