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氣(qi)動(dong)閥(fa)(fa)(fa)門是工業管(guan)(guan)路中(zhong)為常(chang)(chang)見的(de)流體操控(kong)設備，主要由氣(qi)動(dong)履行器(qi)(qi)與閥(fa)(fa)(fa)門組成，通過緊縮干凈空氣(qi)來驅動(dong)閥(fa)(fa)(fa)門，然后操控(kong)管(guan)(guan)道介質的(de)流通和關斷(duan)(duan)，且履行的(de)速度非常(chang)(chang)快(kuai)，通常(chang)(chang)用于快(kuai)速切斷(duan)(duan)使用。氣(qi)動(dong)閥(fa)(fa)(fa)通常(chang)(chang)裝(zhuang)備各種(zhong)附件，比如電(dian)磁(ci)(ci)閥(fa)(fa)(fa)、氣(qi)源處理(li)三(san)聯件、限(xian)位開(kai)關、定位器(qi)(qi)、操控(kong)箱等，以(yi)完成地操控(kong)和遠距離集中(zhong)操控(kong)。假如關于僅需求開(kai)與關效果的(de)兩位閥(fa)(fa)(fa)，電(dian)磁(ci)(ci)閥(fa)(fa)(fa)是必要的(de)裝(zhuang)備，電(dian)磁(ci)(ci)閥(fa)(fa)(fa)通過勵(li)磁(ci)(ci)/消磁(ci)(ci)來到達(da)對氣(qi)動(dong)閥(fa)(fa)(fa)門開(kai)/關的(de)操控(kong)。

在氣(qi)(qi)路(lu)(或液路(lu))上來說，兩位三通電磁閥(fa)具(ju)有1個進(jin)氣(qi)(qi)孔(kong)(接進(jin)氣(qi)(qi)氣(qi)(qi)源(yuan)(yuan))、1個出(chu)氣(qi)(qi)孔(kong)(提(ti)供給(gei)方針設(she)備氣(qi)(qi)源(yuan)(yuan))、1個排氣(qi)(qi)孔(kong)(一(yi)般(ban)安裝(zhuang)(zhuang)一(yi)個消(xiao)聲器，假如不怕(pa)噪(zao)音的(de)話也(ye)能夠不裝(zhuang)(zhuang)。兩位五(wu)通電磁閥(fa)具(ju)有1個進(jin)氣(qi)(qi)孔(kong)(接進(jin)氣(qi)(qi)氣(qi)(qi)源(yuan)(yuan))、1個正(zheng)(zheng)動(dong)作(zuo)(zuo)出(chu)氣(qi)(qi)孔(kong)和1個反(fan)動(dong)作(zuo)(zuo)出(chu)氣(qi)(qi)孔(kong)(別離提(ti)供給(gei)方針設(she)備的(de)一(yi)正(zheng)(zheng)一(yi)反(fan)動(dong)作(zuo)(zuo)的(de)氣(qi)(qi)源(yuan)(yuan))、1個正(zheng)(zheng)動(dong)作(zuo)(zuo)排氣(qi)(qi)孔(kong)和1個反(fan)動(dong)作(zuo)(zuo)排氣(qi)(qi)孔(kong)(安裝(zhuang)(zhuang)消(xiao)聲器)。關于小型自動(dong)操控設(she)備，氣(qi)(qi)管一(yi)般(ban)選用8~12mm的(de)工業膠氣(qi)(qi)管。

在電(dian)(dian)氣上(shang)來說(shuo)，兩位(wei)三通電(dian)(dian)磁閥一(yi)般為單電(dian)(dian)控(kong)(即(ji)(ji)單線(xian)圈(quan))，兩位(wei)五通電(dian)(dian)磁閥一(yi)般為雙電(dian)(dian)控(kong)(即(ji)(ji)雙線(xian)圈(quan))。線(xian)圈(quan)電(dian)(dian)壓等級一(yi)般選用DC24V、AC220V等。兩位(wei)三通電(dian)(dian)磁閥分為常閉型(xing)(xing)和常開型(xing)(xing)兩種(zhong)，常閉型(xing)(xing)指線(xian)圈(quan)沒通電(dian)(dian)時氣路是斷的，常開型(xing)(xing)指線(xian)圈(quan)沒通電(dian)(dian)時氣路是通的。

 (1)常閉型兩位三通電磁(ci)閥動作(zuo)原理：給線圈通電，氣路(lu)接通，線圈一旦斷電，氣路(lu)會斷開，這相(xiang)當(dang)于“點動”。

(2)常開型(xing)兩(liang)位三通單電(dian)控電(dian)磁(ci)閥動作原理：給(gei)線(xian)圈通電(dian)，氣(qi)路斷開，線(xian)圈一旦斷電(dian)，氣(qi)路會接通，這也是“點(dian)動”。

兩(liang)位(wei)五通(tong)雙(shuang)電(dian)(dian)(dian)控電(dian)(dian)(dian)磁(ci)閥(fa)動(dong)(dong)(dong)作(zuo)(zuo)原(yuan)理(li)：給正(zheng)動(dong)(dong)(dong)作(zuo)(zuo)線(xian)(xian)(xian)(xian)圈(quan)(quan)通(tong)電(dian)(dian)(dian)，則(ze)正(zheng)動(dong)(dong)(dong)作(zuo)(zuo)氣(qi)路(lu)接通(tong)(正(zheng)動(dong)(dong)(dong)作(zuo)(zuo)出氣(qi)孔有氣(qi))，即(ji)便(bian)給正(zheng)動(dong)(dong)(dong)作(zuo)(zuo)線(xian)(xian)(xian)(xian)圈(quan)(quan)斷電(dian)(dian)(dian)后(hou)正(zheng)動(dong)(dong)(dong)作(zuo)(zuo)氣(qi)路(lu)仍然是接通(tong)的(de)，將(jiang)會一直堅持到(dao)給反動(dong)(dong)(dong)作(zuo)(zuo)線(xian)(xian)(xian)(xian)圈(quan)(quan)通(tong)電(dian)(dian)(dian)停止(zhi)。給反動(dong)(dong)(dong)作(zuo)(zuo)線(xian)(xian)(xian)(xian)圈(quan)(quan)通(tong)電(dian)(dian)(dian)，則(ze)反動(dong)(dong)(dong)作(zuo)(zuo)氣(qi)路(lu)接通(tong)(反動(dong)(dong)(dong)作(zuo)(zuo)出氣(qi)孔有氣(qi))，即(ji)便(bian)給反動(dong)(dong)(dong)作(zuo)(zuo)線(xian)(xian)(xian)(xian)圈(quan)(quan)斷電(dian)(dian)(dian)后(hou)反動(dong)(dong)(dong)作(zuo)(zuo)氣(qi)路(lu)仍然是接通(tong)的(de)，將(jiang)會一直堅持到(dao)給正(zheng)動(dong)(dong)(dong)作(zuo)(zuo)線(xian)(xian)(xian)(xian)圈(quan)(quan)通(tong)電(dian)(dian)(dian)停止(zhi)。這(zhe)相(xiang)當于“自鎖”（即(ji)所謂的(de)回憶功用）。根據兩(liang)位(wei)五通(tong)雙(shuang)電(dian)(dian)(dian)控電(dian)(dian)(dian)磁(ci)閥(fa)的(de)這(zhe)種特性，在規劃機(ji)電(dian)(dian)(dian)操控回路(lu)或編制(zhi)PLC程(cheng)序的(de)時候(hou)，能夠讓(rang)電(dian)(dian)(dian)磁(ci)閥(fa)線(xian)(xian)(xian)(xian)圈(quan)(quan)動(dong)(dong)(dong)作(zuo)(zuo)1~2秒能夠了，這(zhe)樣能夠維(wei)護電(dian)(dian)(dian)磁(ci)閥(fa)線(xian)(xian)(xian)(xian)圈(quan)(quan)不容易(yi)損壞。

氣(qi)(qi)動履(lv)行器以緊縮空氣(qi)(qi)為(wei)動力(li)源，將輸入(ru)操控信號轉換為(wei)氣(qi)(qi)壓信號加(jia)到氣(qi)(qi)動履(lv)行機構(gou)上從(cong)而驅(qu)動閥(fa)門(men)，完(wan)(wan)成(cheng)連續調節(jie)或(huo)開(kai)關(guan)動作，氣(qi)(qi)動操控閥(fa)可(ke)配用各種(zhong)附件(jian)來完(wan)(wan)成(cheng)多種(zhong)操控功(gong)(gong)用，滿足操控系統對氣(qi)(qi)動操控閥(fa)提出的(de)各種(zhong)特殊要求。也(ye)是說，附件(jian)能夠使氣(qi)(qi)動操控閥(fa)的(de)功(gong)(gong)用更(geng)(geng)完(wan)(wan)善、更(geng)(geng)合理、更(geng)(geng)齊全(quan)。