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氣(qi)(qi)動切斷閥(fa)(fa)是(shi)(shi)工業(ye)管路中較為常見的流體操控(kong)(kong)(kong)設備，主要(yao)由氣(qi)(qi)動實行器與閥(fa)(fa)門組成，通過緊縮潔凈空(kong)氣(qi)(qi)來驅動閥(fa)(fa)門，然后操控(kong)(kong)(kong)管道介質的流轉和關(guan)(guan)斷，且實行的速度(du)非常快(kuai)，一般(ban)用于快(kuai)速切斷運用。氣(qi)(qi)動閥(fa)(fa)一般(ban)裝(zhuang)備各種附(fu)件，比方電(dian)磁閥(fa)(fa)、氣(qi)(qi)源處(chu)理三聯(lian)件、限(xian)位開關(guan)(guan)、定(ding)位器、操控(kong)(kong)(kong)箱等，以(yi)完(wan)成地操控(kong)(kong)(kong)和遠(yuan)距離(li)集(ji)中操控(kong)(kong)(kong)。假如關(guan)(guan)于僅需求開與關(guan)(guan)作(zuo)用的兩位閥(fa)(fa)，電(dian)磁閥(fa)(fa)是(shi)(shi)必要(yao)的裝(zhuang)備，電(dian)磁閥(fa)(fa)通過勵磁/消磁來達到對(dui)氣(qi)(qi)動切斷閥(fa)(fa)開/關(guan)(guan)的操控(kong)(kong)(kong)。

在氣(qi)(qi)路(lu)(或液路(lu))上來(lai)說(shuo)，兩位(wei)三(san)通(tong)電磁閥(fa)具有1個(ge)進(jin)(jin)(jin)氣(qi)(qi)孔(kong)(接進(jin)(jin)(jin)氣(qi)(qi)氣(qi)(qi)源(yuan))、1個(ge)出氣(qi)(qi)孔(kong)(提供給方針設(she)備(bei)氣(qi)(qi)源(yuan))、1個(ge)排(pai)(pai)氣(qi)(qi)孔(kong)(一(yi)般安(an)裝(zhuang)一(yi)個(ge)消聲(sheng)(sheng)器，假(jia)如不怕(pa)噪音的話也可以不裝(zhuang)。兩位(wei)五通(tong)電磁閥(fa)具有1個(ge)進(jin)(jin)(jin)氣(qi)(qi)孔(kong)(接進(jin)(jin)(jin)氣(qi)(qi)氣(qi)(qi)源(yuan))、1個(ge)正(zheng)動(dong)作(zuo)出氣(qi)(qi)孔(kong)和1個(ge)抵(di)擋作(zuo)出氣(qi)(qi)孔(kong)(別離提供給方針設(she)備(bei)的一(yi)正(zheng)一(yi)抵(di)擋作(zuo)的氣(qi)(qi)源(yuan))、1個(ge)正(zheng)動(dong)作(zuo)排(pai)(pai)氣(qi)(qi)孔(kong)和1個(ge)抵(di)擋作(zuo)排(pai)(pai)氣(qi)(qi)孔(kong)(安(an)裝(zhuang)消聲(sheng)(sheng)器)。關于(yu)小型(xing)自(zi)動(dong)操控(kong)設(she)備(bei)，氣(qi)(qi)管一(yi)般選(xuan)用(yong)8~12mm的工(gong)業膠氣(qi)(qi)管。

在電(dian)(dian)(dian)氣上來說，兩位三(san)通(tong)(tong)電(dian)(dian)(dian)磁(ci)閥(fa)(fa)(fa)一(yi)般為(wei)單電(dian)(dian)(dian)控(即單線(xian)(xian)圈)，兩位五通(tong)(tong)電(dian)(dian)(dian)磁(ci)閥(fa)(fa)(fa)一(yi)般為(wei)雙電(dian)(dian)(dian)控(即雙線(xian)(xian)圈)。線(xian)(xian)圈電(dian)(dian)(dian)壓等級一(yi)般選用(yong)DC24V、AC220V等。兩位三(san)通(tong)(tong)電(dian)(dian)(dian)磁(ci)閥(fa)(fa)(fa)分為(wei)常閉(bi)型和常開型兩種，常閉(bi)型指線(xian)(xian)圈沒通(tong)(tong)電(dian)(dian)(dian)時(shi)氣路是(shi)(shi)斷的(de)，常開型指線(xian)(xian)圈沒通(tong)(tong)電(dian)(dian)(dian)時(shi)氣路是(shi)(shi)通(tong)(tong)的(de)。

(1)常(chang)閉型兩位三通(tong)(tong)電(dian)磁閥動作原(yuan)理：給線圈通(tong)(tong)電(dian)，氣路接(jie)通(tong)(tong)，線圈一旦斷電(dian)，氣路會斷開，這相當(dang)于“點(dian)動”。

(2)常開(kai)型兩位三通(tong)單電(dian)(dian)(dian)(dian)控電(dian)(dian)(dian)(dian)磁閥動作原理：給線圈通(tong)電(dian)(dian)(dian)(dian)，氣路斷(duan)開(kai)，線圈一旦(dan)斷(duan)電(dian)(dian)(dian)(dian)，氣路會接通(tong)，這也是“點動”。

兩位五通雙電(dian)(dian)(dian)控(kong)電(dian)(dian)(dian)磁閥動(dong)(dong)(dong)作(zuo)(zuo)(zuo)原理(li)：給(gei)正(zheng)(zheng)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)線(xian)圈(quan)通電(dian)(dian)(dian)，則(ze)正(zheng)(zheng)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)氣路(lu)接通(正(zheng)(zheng)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)出(chu)氣孔有氣)，即(ji)(ji)便給(gei)正(zheng)(zheng)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)線(xian)圈(quan)斷電(dian)(dian)(dian)后正(zheng)(zheng)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)氣路(lu)仍然是(shi)接通的(de)(de)(de)，將(jiang)會(hui)一(yi)貫(guan)堅持到(dao)給(gei)抵(di)(di)擋作(zuo)(zuo)(zuo)線(xian)圈(quan)通電(dian)(dian)(dian)中止。給(gei)抵(di)(di)擋作(zuo)(zuo)(zuo)線(xian)圈(quan)通電(dian)(dian)(dian)，則(ze)抵(di)(di)擋作(zuo)(zuo)(zuo)氣路(lu)接通(抵(di)(di)擋作(zuo)(zuo)(zuo)出(chu)氣孔有氣)，即(ji)(ji)便給(gei)抵(di)(di)擋作(zuo)(zuo)(zuo)線(xian)圈(quan)斷電(dian)(dian)(dian)后抵(di)(di)擋作(zuo)(zuo)(zuo)氣路(lu)仍然是(shi)接通的(de)(de)(de)，將(jiang)會(hui)一(yi)貫(guan)堅持到(dao)給(gei)正(zheng)(zheng)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)線(xian)圈(quan)通電(dian)(dian)(dian)中止。這(zhe)相(xiang)當于(yu)“自鎖”（即(ji)(ji)所謂(wei)的(de)(de)(de)回憶(yi)功用）。根(gen)據兩位五通雙電(dian)(dian)(dian)控(kong)電(dian)(dian)(dian)磁閥的(de)(de)(de)這(zhe)種特性，在規劃機(ji)電(dian)(dian)(dian)操控(kong)回路(lu)或編制PLC程序(xu)的(de)(de)(de)時分，可(ke)以讓電(dian)(dian)(dian)磁閥線(xian)圈(quan)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)1~2秒(miao)可(ke)以了，這(zhe)樣可(ke)以保護電(dian)(dian)(dian)磁閥線(xian)圈(quan)不容(rong)易損壞(huai)。