REXROTH液壓比例閥AZPF-11-011RCB20MB 

電液比例閥是閥內(nèi)比例電磁鐵根據(jù)輸入的電壓信號(hào)產(chǎn)生相應(yīng)動(dòng)作，使工作閥閥芯產(chǎn)生位移，閥口尺寸發(fā)生改變并以此完成與輸入電壓成比例的壓力、流量輸出的元件。
閥芯位移也可以以機(jī)械、液壓或電的形式進(jìn)行反饋。由于電液比例閥具有形式種類多樣、容易組成電氣及計(jì)算機(jī)控制的各種電液系統(tǒng)、控制精度高、安裝靈活以及抗污染能力強(qiáng)等多方面，因此應(yīng)用領(lǐng)域日益拓寬。近年研發(fā)的插裝式比例閥和比例多路閥充分考慮到工程機(jī)械的特點(diǎn)，具有導(dǎo)控制、負(fù)載傳感和壓力補(bǔ)償?shù)裙δ?。它的出現(xiàn)對(duì)移動(dòng)式液壓機(jī)械整體技術(shù)水平的提升具有重要意義。特別是在電控導(dǎo)操作、無線遙控和有線遙控操作等方面展現(xiàn)了其良好的應(yīng)用前景。
在每個(gè)出油孔上再安上接流閥，調(diào)節(jié)節(jié)流閥的開口大小來控制各出油口的出油量。如有三個(gè)出口，就可調(diào)節(jié)它們的出油量為1:2:3。（可為任意比例）因此就叫做比例閥。

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REXROTH液壓比例閥AZPF-11-011RCB20MB