歡迎您的詢價(jià)！公司詢價(jià)聯(lián)系人：何女士。電話18934630908/15072720048.

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由于電磁鐵推力的限制，在大于63L/min的液壓系統(tǒng)中，一般不再選用直推式的電磁換向閥，而選用通過(guò)流量較大的電液換向閥。電液換向閥的原理是：控制油通過(guò)電磁先導(dǎo)閥到達(dá)電液閥主閥芯的兩端（即電液換向閥主閥體兩端蓋側(cè)），通過(guò)電磁先導(dǎo)閥的換向，來(lái)實(shí)現(xiàn)主閥芯的左右移動(dòng)，從而開(kāi)通或切斷通往執(zhí)行元件的油路，使執(zhí)行元件運(yùn)行或停止。但在打開(kāi)或切斷油路的瞬間，系統(tǒng)中會(huì)產(chǎn)生相當(dāng)大的沖擊，這種沖擊會(huì)極大影響液壓系統(tǒng)中液壓元件和密封件的使用壽命。為了減小及至消除由此引起的液壓沖擊，簡(jiǎn)單的辦法是在該電液閥下面疊加一個(gè)P口節(jié)流閥或進(jìn)油節(jié)流式雙單向節(jié)流閥、出油節(jié)流式雙單向節(jié)流閥，以延長(zhǎng)閥芯的換向及復(fù)位時(shí)間，從而到降低液壓沖擊的目的。下面就以彈簧復(fù)位型、三位四通中封式電液壓換向閥為例、對(duì)該三種疊加節(jié)流方式作簡(jiǎn)要說(shuō)明。

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