派克換(huan)向(xiang)(xiang)閥(fa)工作原理(li)：電(dian)(dian)磁(ci)換(huan)向(xiang)(xiang)閥(fa)工作原理(li)是(shi)基本相(xiang)(xiang)同的(de)(de)。現以三位(wei)四(si)通(tong)(tong)O型滑閥(fa)機能(neng)的(de)(de)電(dian)(dian)磁(ci)換(huan)向(xiang)(xiang)閥(fa)為例來說明。如下(xia)圖(tu)(tu)閥(fa)體1內有三個(ge)環形(xing)沉(chen)割槽，中(zhong)間為進油(you)腔P，與其(qi)相(xiang)(xiang)鄰的(de)(de)是(shi)工作油(you)腔A和B。兩(liang)端(duan)(duan)還有兩(liang)個(ge)互相(xiang)(xiang)連(lian)(lian)通(tong)(tong)的(de)(de)回(hui)油(you)腔T。閥(fa)芯兩(liang)端(duan)(duan)分(fen)別裝(zhuang)有彈(dan)簧座3、復(fu)(fu)位(wei)彈(dan)簧4和推(tui)桿5，閥(fa)體兩(liang)端(duan)(duan)各裝(zhuang)一(yi)個(ge)電(dian)(dian)磁(ci)鐵(tie)。當(dang)兩(liang)端(duan)(duan)電(dian)(dian)磁(ci)鐵(tie)都斷電(dian)(dian)時(shi)下(xia)圖(tu)(tu)a，閥(fa)芯處于中(zhong)間位(wei)置。此時(shi)P、A、B、T各油(you)腔互不相(xiang)(xiang)通(tong)(tong);當(dang)左端(duan)(duan)電(dian)(dian)磁(ci)鐵(tie)通(tong)(tong)電(dian)(dian)時(shi)下(xia)圖(tu)(tu)b，該(gai)電(dian)(dian)磁(ci)鐵(tie)吸合，并(bing)推(tui)動(dong)(dong)閥(fa)芯向(xiang)(xiang)右移動(dong)(dong)，使P和B連(lian)(lian)通(tong)(tong)，A和T連(lian)(lian)通(tong)(tong)。當(dang)其(qi)斷電(dian)(dian)后，右端(duan)(duan)復(fu)(fu)位(wei)彈(dan)簧的(de)(de)作用力可(ke)使閥(fa)芯回(hui)到中(zhong)間位(wei)置，恢復(fu)(fu)原來四(si)個(ge)油(you)腔相(xiang)(xiang)互封閉的(de)(de)狀態;當(dang)右端(duan)(duan)電(dian)(dian)磁(ci)鐵(tie)通(tong)(tong)電(dian)(dian)時(shi)下(xia)圖(tu)(tu)c，其(qi)銜(xian)鐵(tie)將通(tong)(tong)過推(tui)桿推(tui)動(dong)(dong)閥(fa)芯向(xiang)(xiang)左移動(dong)(dong)，P和A相(xiang)(xiang)通(tong)(tong)、B和T相(xiang)(xiang)通(tong)(tong)。電(dian)(dian)磁(ci)鐵(tie)斷電(dian)(dian)，閥(fa)芯則(ze)在左彈(dan)簧的(de)(de)作用下(xia)回(hui)到中(zhong)間位(wei)置。

安(an)裝(zhuang)注意事項：

1、安裝時應(ying)注意閥體上箭頭(tou)應(ying)與介質流(liu)向*。不可裝在有直(zhi)接(jie)滴水或濺水的地方。電(dian)磁閥應(ying)垂直(zhi)向上安裝；

2、電(dian)磁閥應保證在電(dian)源電(dian)壓為額定(ding)電(dian)壓的15%-10%波動范圍內正常工作；

3、電磁(ci)閥安裝后(hou)，管道(dao)中不得有反向壓(ya)差。并需通電數次(ci)，使之適溫后(hou)方可正式投入使用；

4、電磁閥(fa)安裝(zhuang)前(qian)應*清洗管(guan)道。通入的(de)介質(zhi)應無(wu)雜質(zhi)。閥(fa)前(qian)裝(zhuang)過(guo)濾器；

5、當電磁閥發(fa)生故障(zhang)或(huo)清洗時，為保證系統繼續運行，應安裝(zhuang)旁路裝(zhuang)置。

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