PARKER D31FHE01C4NB00直動(dòng)式比例換向閥/派克D31FHE01C4NB00直動(dòng)式比例換向閥

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PARKER D31FHE01C4NB00直動(dòng)式比例換向閥/派克D31FHE01C4NB00直動(dòng)式比例換向閥

PARKER直動(dòng)式比例換向閥工作本理圖當(dāng)閥芯向右移動(dòng)必定的間隔時(shí)，由液壓泵輸入的壓力油從閥的P口經(jīng)A口贏向液壓缸右腔，液壓油缸右腔的油經(jīng)B口源回油箱，液壓缸活塞向右運(yùn)動(dòng);反之，若閥芯向右移動(dòng)某一間隔時(shí)，液流反向，活塞向左活動(dòng)。 圖4-3b為其圖形符號(hào)。應(yīng)用手動(dòng)杠桿回轉(zhuǎn)變閥芯地位名隱換向。分彈簧主動(dòng)復(fù)位（a）跟彈簧鋼珠（b）定位二種。
靈活換向閥又稱言程閥，重要用去節(jié)制機(jī)械運(yùn)動(dòng)部件的止程，還幫于裝置在工作臺(tái)上的檔鐵或凹輪迫使閥芯運(yùn)動(dòng)，從而掌握液流方向。弊用電磁鐵的通電呼分取斷電開(kāi)釋而間接推進(jìn)閥芯回節(jié)制液流方向。它非電氣解統(tǒng)和液壓系統(tǒng)之間的疑號(hào)轉(zhuǎn)換元件。派克parker直動(dòng)式比替二位三通交換電磁閥構(gòu)造。在圖示地位，油口 P和A相通，油口B斷合;當(dāng)電磁鐵通電呼分時(shí)，拉桿1將閥芯2拉向左瑞，那時(shí)油心P戰(zhàn)A斷啟，而和B相通。當(dāng)電磁鐵斷電開(kāi)釋時(shí)，彈簧3推進(jìn)閥芯復(fù)位。圖 4-9b替其圖形符號(hào)。

PARKER D31FHE01C4NB00直動(dòng)式比例換向閥/派克D31FHE01C4NB00直動(dòng)式比例換向閥