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一、前言目前,液压元件正向高压、大流量方向发展,这对于高压、大流量电液控制系统中应用的电液控制阀来说,其结构往往比较复杂,制造精度要求相当高,对油液清净度的要求也十分高,而且价格高昂。所以,这种电液控制阀在一般工业设备的电液控制系统中的应用却受到一定限制。为了使电液控制系统能在一般工业设备中得到更为广泛的应用,有必要研制出一种结构简单、价格低廉、抗污染能力强而且性能良好的电液控制阀来。
I. Introduction At present, the hydraulic components forward high pressure, large flow direction, which for high pressure, high flow electro-hydraulic control system used in the electro-hydraulic control valve, the structure is often more complex, manufacturing precision is very high, the oil Liquid cleanliness requirements are also very high, and the price is high. Therefore, the electro-hydraulic control valve in the general industrial equipment, electro-hydraulic control system is subject to certain restrictions. In order to make the electro-hydraulic control system be more widely used in general industrial equipment, it is necessary to develop an electro-hydraulic control valve with simple structure, low cost, strong anti-pollution ability and good performance.