Plastic machinery variable pump energy saving tips

in the case of rotating speed is constant, by changing the hydraulic pump displacement, the motor load will be changed by displacement at the same time, achieve the goal of power saving. Variable pump and quantitative pump output power is the main difference between different standards, the output power of variable pump is along with the change of load change, and quantitative pump output power is relatively constant, in the case of small flow movement, the output power of variable pump is very low, and quantitative pump basic constant power output. Power matching proportional variable pump system with high response to injection machine hydraulic system matching with the machine running the required power output, no high-pressure throttle overflow energy loss, especially in plastic process, melt, the cooling process of the higher of energy saving effect, can reach - on average % of the power saving effect. Correlation glue holding long thick or large products, the advantages of energy saving is more obvious. At the same time, the same motor power can be more large displacement pump, the engine speed. Variable pump injection machine is generally used for small, for medium and large injection machine, the variable pump is adopted to equipment costs have gone up too much, it's not economic. Medium and large injection machine adopts multiple quantitative pump joint work to achieve the goal of transformation movement speed, through the loading and unloading of the pump and matching, also can get reasonable control energy consumption. Another variable pump high cleanliness requirements for oil, which has increased the use of the variable pump injection machine costs, which limits its application. Variable pump injection machine and injection machine servo control and energy-saving, development time is relatively long, also a mature technology development. But so far, for our country enterprise, variable pump and servo controller is still basic imports from developed countries, this is because the basis of the mechanical manufacturing industry in China is still relatively backward situation. Was formed as a result, the variable pump and energy-saving in our country and the market price of servo control energy-saving injection machine is still difficult to pose enough attraction to downstream products enterprises.