防爆電磁閥
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電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)是(shi)(shi)用(yong)來(lai)(lai)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)流(liu)體的(de)(de)(de)(de)方(fang)向(xiang)的(de)(de)(de)(de)自(zi)(zi)動(dong)(dong)(dong)化(hua)基(ji)礎元(yuan)件(jian)，屬于(yu)(yu)(yu)執行器(qi)(qi)；通(tong)常(chang)用(yong)于(yu)(yu)(yu)機(ji)(ji)械(xie)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)和工業閥(fa)(fa)(fa)(fa)(fa)門上面(mian)，對(dui)介質(zhi)方(fang)向(xiang)進行控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)，從而(er)(er)達到對(dui)閥(fa)(fa)(fa)(fa)(fa)門開(kai)關的(de)(de)(de)(de)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)。電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)里(li)有(you)密(mi)閉的(de)(de)(de)(de)腔(qiang)，在(zai)不(bu)同(tong)位置開(kai)有(you)通(tong)孔，每(mei)個孔都通(tong)向(xiang)不(bu)同(tong)的(de)(de)(de)(de)油(you)(you)管(guan)，腔(qiang)中間是(shi)(shi)閥(fa)(fa)(fa)(fa)(fa)，兩(liang)面(mian)是(shi)(shi)兩(liang)塊電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)鐵(tie)，哪面(mian)的(de)(de)(de)(de)磁(ci)(ci)鐵(tie)線圈通(tong)電(dian)(dian)(dian)(dian)(dian)閥(fa)(fa)(fa)(fa)(fa)體就會被吸引到哪邊，通(tong)過(guo)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)閥(fa)(fa)(fa)(fa)(fa)體的(de)(de)(de)(de)移動(dong)(dong)(dong)來(lai)(lai)檔(dang)住或(huo)漏(lou)出不(bu)同(tong)的(de)(de)(de)(de)排(pai)油(you)(you)的(de)(de)(de)(de)孔，而(er)(er)進油(you)(you)孔是(shi)(shi)常(chang)開(kai)的(de)(de)(de)(de)，液壓油(you)(you)就會進入不(bu)同(tong)的(de)(de)(de)(de)排(pai)油(you)(you)管(guan)，然(ran)后通(tong)過(guo)油(you)(you)的(de)(de)(de)(de)壓力來(lai)(lai)推動(dong)(dong)(dong)油(you)(you)缸的(de)(de)(de)(de)活(huo)塞(sai)(sai)，活(huo)塞(sai)(sai)又帶動(dong)(dong)(dong)活(huo)塞(sai)(sai)桿，活(huo)塞(sai)(sai)桿帶動(dong)(dong)(dong)機(ji)(ji)械(xie)裝置動(dong)(dong)(dong)。這樣通(tong)過(guo)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)鐵(tie)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)就控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)了機(ji)(ji)械(xie)運動(dong)(dong)(dong)。唯(wei)有(you)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)是(shi)(shi)用(yong)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)力作用(yong)于(yu)(yu)(yu)密(mi)封在(zai)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)調節閥(fa)(fa)(fa)(fa)(fa)隔(ge)磁(ci)(ci)套管(guan)內(nei)的(de)(de)(de)(de)鐵(tie)芯完(wan)成，不(bu)存(cun)在(zai)動(dong)(dong)(dong)密(mi)封，所以(yi)外漏(lou)易(yi)(yi)堵(du)絕。電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)閥(fa)(fa)(fa)(fa)(fa)力矩控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)不(bu)易(yi)(yi)，容(rong)易(yi)(yi)產生內(nei)漏(lou)，甚(shen)至拉斷(duan)閥(fa)(fa)(fa)(fa)(fa)桿頭部；電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)結構型(xing)式容(rong)易(yi)(yi)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)內(nei)泄漏(lou)，直(zhi)至降(jiang)為零。所以(yi)，電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)使用(yong)特別安全，尤其適用(yong)于(yu)(yu)(yu)腐蝕性、有(you)毒或(huo)高低溫的(de)(de)(de)(de)介質(zhi)。電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)本身(shen)結構簡單，價(jia)格也低，比(bi)起調節閥(fa)(fa)(fa)(fa)(fa)等其它種(zhong)類執行器(qi)(qi)易(yi)(yi)于(yu)(yu)(yu)安裝維護。更(geng)顯(xian)著的(de)(de)(de)(de)是(shi)(shi)所組(zu)成的(de)(de)(de)(de)自(zi)(zi)控(kong)(kong)系統簡單得(de)(de)多，價(jia)格要低得(de)(de)多。由于(yu)(yu)(yu)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)是(shi)(shi)開(kai)關信(xin)號控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)，與工控(kong)(kong)計(ji)算機(ji)(ji)連接十分方(fang)便。在(zai)當今電(dian)(dian)(dian)(dian)(dian)腦普及，價(jia)格大幅下降(jiang)的(de)(de)(de)(de)時代，電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)優勢就更(geng)加明顯(xian)。
