SMC電磁閥 2位雙電控溫度范圍

   特點：在(zai)真(zhen)空(kong)、負(fu)壓(ya)、零壓(ya)差(cha)時能正常工作，DN50以下可(ke)任意(yi)安裝，但電(dian)(dian)磁頭體(ti)積(ji)較(jiao)大。如我(wo)公(gong)司(si)引進HERION公(gong)司(si)技術的(de)直(zhi)動電(dian)(dian)磁閥可(ke)用于1.33×10-4 Mpa真(zhen)空(kong)。 

   原(yuan)(yuan)理：它的原(yuan)(yuan)理是種直動(dong)(dong)(dong)和導(dao)相(xiang)結(jie)合，通(tong)電(dian)時，電(dian)磁閥(fa)將輔閥(fa)打(da)開，主(zhu)閥(fa)下腔(qiang)壓(ya)(ya)(ya)力(li)大于上腔(qiang)壓(ya)(ya)(ya)力(li)而利(li)用(yong)(yong)壓(ya)(ya)(ya)差及電(dian)磁閥(fa)的同時作用(yong)(yong)把閥(fa)門開啟；斷電(dian)時，輔閥(fa)利(li)用(yong)(yong)彈簧力(li)或介(jie)質壓(ya)(ya)(ya)力(li)推動(dong)(dong)(dong)關閉件，向下移動(dong)(dong)(dong)便(bian)閥(fa)門關閉。 

   特點：在零壓差或(huo)高壓時也能可(ke)靠工作，但功率及體積較大，要求豎直安裝。 

   原理：通(tong)電(dian)時，電(dian)磁力驅動(dong)導(dao)閥(fa)打(da)開(kai)導(dao)閥(fa)，主(zhu)閥(fa)上腔(qiang)壓(ya)(ya)力迅速下(xia)降，在主(zhu)閥(fa)上下(xia)腔(qiang)內形成壓(ya)(ya)差(cha)(cha)，依靠介質壓(ya)(ya)力推動(dong)主(zhu)閥(fa)關(guan)閉(bi)件(jian)上移，閥(fa)門開(kai)啟(qi)；斷(duan)電(dian)時，彈簧力把導(dao)閥(fa)關(guan)閉(bi)，入口介質壓(ya)(ya)力通(tong)過導(dao)孔(kong)迅速進入主(zhu)閥(fa)上腔(qiang)在上腔(qiang)內形成壓(ya)(ya)差(cha)(cha)，從而使(shi)主(zhu)閥(fa)關(guan)閉(bi)。 

   特(te)點：體積小，功率低，但介(jie)質壓(ya)差范圍(wei)受限，必須滿足壓(ya)差條(tiao)件。

兩位三(san)通(tong)電磁閥通(tong)常與單作(zuo)用(yong)氣(qi)動執(zhi)行(xing)機(ji)構配(pei)套使用(yong)，兩位是(shi)兩個(ge)(ge)位置可控：開-關，三(san)通(tong)是(shi)有(you)三(san)個(ge)(ge)通(tong)道通(tong)氣(qi)，般(ban)情況(kuang)下(xia)1個(ge)(ge)通(tong)道與氣(qi)源連接，另外兩個(ge)(ge)通(tong)道1個(ge)(ge)與執(zhi)行(xing)機(ji)構的進氣(qi)口連接，1個(ge)(ge)與執(zhi)行(xing)機(ji)構排(pai)氣(qi)口連接，具體的工作(zuo)原理可以參照單作(zuo)用(yong)氣(qi)動執(zhi)行(xing)機(ji)構的工作(zuo)原理圖(tu)。 

兩(liang)位五通(tong)電(dian)磁閥通(tong)常與(yu)(yu)(yu)雙(shuang)作(zuo)(zuo)用氣(qi)動(dong)執(zhi)行機構配套使(shi)用，兩(liang)位是兩(liang)個位置可控：開(kai)-關，五通(tong)是有五個通(tong)道通(tong)氣(qi)，其中1個與(yu)(yu)(yu)氣(qi)源連(lian)接(jie)，兩(liang)個與(yu)(yu)(yu)雙(shuang)作(zuo)(zuo)用氣(qi)缸的外部氣(qi)室的進(jin)出(chu)氣(qi)口連(lian)接(jie)，兩(liang)個與(yu)(yu)(yu)內(nei)部氣(qi)室的進(jin)出(chu)氣(qi)口接(jie)連(lian)，具(ju)體的工作(zuo)(zuo)原理可參照雙(shuang)作(zuo)(zuo)用氣(qi)動(dong)執(zhi)行機構工作(zuo)(zuo)原理

在氣(qi)(qi)(qi)(qi)路（或液路）上(shang)來說，兩位三通電磁閥具(ju)有(you)1個(ge)(ge)(ge)進(jin)氣(qi)(qi)(qi)(qi)孔(kong)（接(jie)進(jin)氣(qi)(qi)(qi)(qi)氣(qi)(qi)(qi)(qi)源(yuan)(yuan)）、1個(ge)(ge)(ge)出氣(qi)(qi)(qi)(qi)孔(kong)（提供(gong)給目標設(she)備氣(qi)(qi)(qi)(qi)源(yuan)(yuan)）、1個(ge)(ge)(ge)排(pai)氣(qi)(qi)(qi)(qi)孔(kong)（般(ban)安裝個(ge)(ge)(ge)消聲(sheng)器，如果(guo)不(bu)怕噪音的(de)話也可以不(bu)裝@_@）。 兩位五通電磁閥具(ju)有(you)1個(ge)(ge)(ge)進(jin)氣(qi)(qi)(qi)(qi)孔(kong)（接(jie)進(jin)氣(qi)(qi)(qi)(qi)氣(qi)(qi)(qi)(qi)源(yuan)(yuan)）、1個(ge)(ge)(ge)正(zheng)動作(zuo)出氣(qi)(qi)(qi)(qi)孔(kong)和1個(ge)(ge)(ge)反(fan)動作(zuo)出氣(qi)(qi)(qi)(qi)孔(kong)（分別提供(gong)給目標設(she)備的(de)正(zheng)反(fan)動作(zuo)的(de)氣(qi)(qi)(qi)(qi)源(yuan)(yuan)）、1個(ge)(ge)(ge)正(zheng)動作(zuo)排(pai)氣(qi)(qi)(qi)(qi)孔(kong)和1個(ge)(ge)(ge)反(fan)動作(zuo)排(pai)氣(qi)(qi)(qi)(qi)孔(kong)（安裝消聲(sheng)器）。 

對于(yu)小(xiao)型(xing)(xing)自(zi)動(dong)(dong)(dong)控(kong)制(zhi)設(she)(she)備，氣(qi)(qi)(qi)(qi)(qi)管(guan)般選用8~12mm的工業膠氣(qi)(qi)(qi)(qi)(qi)管(guan)。在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)(qi)(qi)(qi)上來說，兩(liang)位(wei)三(san)通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)般為(wei)單電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)控(kong)（即(ji)(ji)單線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)），兩(liang)位(wei)五通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)般為(wei)雙(shuang)(shuang)(shuang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)控(kong)（即(ji)(ji)雙(shuang)(shuang)(shuang)線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)）。線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓等(deng)般采(cai)用DC24V、AC220V等(deng)。 兩(liang)位(wei)三(san)通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)分為(wei)常閉型(xing)(xing)和常開型(xing)(xing)兩(liang)種，常閉型(xing)(xing)指線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)沒通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時氣(qi)(qi)(qi)(qi)(qi)路(lu)(lu)是(shi)斷的，常開型(xing)(xing)指線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)沒通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時氣(qi)(qi)(qi)(qi)(qi)路(lu)(lu)是(shi)通(tong)(tong)(tong)(tong)(tong)的。 常閉型(xing)(xing)兩(liang)位(wei)三(san)通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)原理(li)：給(gei)線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，氣(qi)(qi)(qi)(qi)(qi)路(lu)(lu)接(jie)(jie)通(tong)(tong)(tong)(tong)(tong)，線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)旦(dan)斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，氣(qi)(qi)(qi)(qi)(qi)路(lu)(lu)就(jiu)會斷開，這(zhe)(zhe)相當于(yu)“點(dian)(dian)動(dong)(dong)(dong)"。 常開型(xing)(xing)兩(liang)位(wei)三(san)通(tong)(tong)(tong)(tong)(tong)單電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)控(kong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)原理(li)：給(gei)線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，氣(qi)(qi)(qi)(qi)(qi)路(lu)(lu)斷開，線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)旦(dan)斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，氣(qi)(qi)(qi)(qi)(qi)路(lu)(lu)就(jiu)會接(jie)(jie)通(tong)(tong)(tong)(tong)(tong)，這(zhe)(zhe)也(ye)是(shi)“點(dian)(dian)動(dong)(dong)(dong)"。 兩(liang)位(wei)五通(tong)(tong)(tong)(tong)(tong)雙(shuang)(shuang)(shuang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)控(kong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)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)(xian)(xian)圈(quan)(quan)(quan)(quan)通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，則正(zheng)(zheng)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)氣(qi)(qi)(qi)(qi)(qi)路(lu)(lu)接(jie)(jie)通(tong)(tong)(tong)(tong)(tong)（正(zheng)(zheng)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)出(chu)氣(qi)(qi)(qi)(qi)(qi)孔有(you)氣(qi)(qi)(qi)(qi)(qi)），即(ji)(ji)使給(gei)正(zheng)(zheng)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)后正(zheng)(zheng)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)氣(qi)(qi)(qi)(qi)(qi)路(lu)(lu)仍(reng)然是(shi)接(jie)(jie)通(tong)(tong)(tong)(tong)(tong)的，將會直(zhi)維(wei)持到(dao)給(gei)反(fan)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)為(wei)止(zhi)。 給(gei)反(fan)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，則反(fan)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)氣(qi)(qi)(qi)(qi)(qi)路(lu)(lu)接(jie)(jie)通(tong)(tong)(tong)(tong)(tong)（反(fan)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)出(chu)氣(qi)(qi)(qi)(qi)(qi)孔有(you)氣(qi)(qi)(qi)(qi)(qi)），即(ji)(ji)使給(gei)反(fan)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)后反(fan)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)氣(qi)(qi)(qi)(qi)(qi)路(lu)(lu)仍(reng)然是(shi)接(jie)(jie)通(tong)(tong)(tong)(tong)(tong)的，將會直(zhi)維(wei)持到(dao)給(gei)正(zheng)(zheng)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)通(tong)(tong)(tong)(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)為(wei)止(zhi)。這(zhe)(zhe)相當于(yu)“自(zi)鎖(suo)"。 基于(yu)兩(liang)位(wei)五通(tong)(tong)(tong)(tong)(tong)雙(shuang)(shuang)(shuang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)控(kong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)的這(zhe)(zhe)種特性，在設(she)(she)計機電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)控(kong)制(zhi)回路(lu)(lu)或編制(zhi)PLC程序(xu)的時候(hou)，可(ke)以(yi)(yi)讓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)動(dong)(dong)(dong)作(zuo)(zuo)(zuo)1~2秒就(jiu)可(ke)以(yi)(yi)了，這(zhe)(zhe)樣可(ke)以(yi)(yi)保護電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)閥(fa)線(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)不容易損(sun)壞。

電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)在(zai)液(ye)路(lu)(lu)系統中用來(lai)實現(xian)液(ye)路(lu)(lu)的(de)(de)(de)通斷或(huo)液(ye)流方向的(de)(de)(de)改變，它般(ban)具有個(ge)可以在(zai)線(xian)(xian)圈電(dian)(dian)(dian)(dian)磁(ci)(ci)力驅(qu)動(dong)下滑(hua)動(dong)的(de)(de)(de)閥(fa)(fa)(fa)(fa)芯(xin)(xin)，閥(fa)(fa)(fa)(fa)芯(xin)(xin)在(zai)不同的(de)(de)(de)位(wei)置(zhi)時(shi)，電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)的(de)(de)(de)通路(lu)(lu)也就不同。閥(fa)(fa)(fa)(fa)芯(xin)(xin)的(de)(de)(de)工(gong)作位(wei)置(zhi)有幾個(ge)，該(gai)電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)就叫(jiao)幾位(wei)電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)：閥(fa)(fa)(fa)(fa)體上的(de)(de)(de)接(jie)(jie)口(kou)，也就是電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)的(de)(de)(de)通路(lu)(lu)數，有幾個(ge)通路(lu)(lu)口(kou)，該(gai)電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)就叫(jiao)幾通電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)。 電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)安(an)裝后，般(ban)所有接(jie)(jie)口(kou)都應該(gai)是連接(jie)(jie)好(hao)了的(de)(de)(de)，所謂(wei)工(gong)作位(wei)置(zhi)指的(de)(de)(de)是閥(fa)(fa)(fa)(fa)芯(xin)(xin)的(de)(de)(de)位(wei)置(zhi)。閥(fa)(fa)(fa)(fa)芯(xin)(xin)在(zai)線(xian)(xian)圈不通電(dian)(dian)(dian)(dian)時(shi)處在(zai)甲位(wei)置(zhi)，在(zai)線(xian)(xian)圈通電(dian)(dian)(dian)(dian)時(shi)處在(zai)乙位(wei)置(zhi)，閥(fa)(fa)(fa)(fa)芯(xin)(xin)在(zai)不同位(wei)置(zhi)時(shi)，對各接(jie)(jie)口(kou)起到或(huo)接(jie)(jie)通或(huo)封閉的(de)(de)(de)作用。

電(dian)(dian)磁(ci)閥二(er)位(wei)是指電(dian)(dian)磁(ci)閥的(de)(de)閥芯有兩個(ge)不(bu)同(tong)的(de)(de)工作位(wei)置（開(kai)、關(guan)）。 電(dian)(dian)磁(ci)閥二(er)通(tong)、三通(tong)指電(dian)(dian)磁(ci)閥的(de)(de)閥體(ti)上有兩個(ge)、三個(ge)通(tong)道(dao)口(kou)； 比如二(er)位(wei)二(er)通(tong)電(dian)(dian)磁(ci)閥是進出（二(er)個(ge)通(tong)道(dao)、zui普(pu)通(tong)常見） 二(er)位(wei)三通(tong)電(dian)(dian)磁(ci)閥控制(zhi)液體(ti)是進二(er)出（兩出分(fen)別是個(ge)常開(kai)個(ge)常閉(bi)）；氣動換向電(dian)(dian)磁(ci)閥是進出排氣；液壓進出回油(you)。

國內外的電磁閥從(cong)原(yuan)理(li)上分(fen)為(wei)(wei)三大類（即(ji)：直動式、分(fen)步直動式、導(dao)式），而從(cong)閥瓣結(jie)(jie)構(gou)(gou)和材料(liao)上的不同與原(yuan)理(li)上的區別又分(fen)為(wei)(wei)六(liu)個分(fen)支小類（直動膜片結(jie)(jie)構(gou)(gou)、分(fen)步重片結(jie)(jie)構(gou)(gou)、導(dao)膜式結(jie)(jie)構(gou)(gou)、直動活(huo)塞結(jie)(jie)構(gou)(gou)、分(fen)步直動活(huo)塞結(jie)(jie)構(gou)(gou)、導(dao)活(huo)塞結(jie)(jie)構(gou)(gou)）。

直動式(shi)電磁閥：

原理：通電時，電磁(ci)(ci)線(xian)圈產生電磁(ci)(ci)力把關閉(bi)件從閥(fa)座上(shang)提(ti)起(qi)，閥(fa)門打開；斷電時，電磁(ci)(ci)力消失，彈(dan)簧把關閉(bi)件壓在閥(fa)座上(shang)，閥(fa)門關閉(bi)。

特點：在真空、負壓、零壓時能正(zheng)常工作，但通徑般不超過(guo)25mm。 

分布直動式電磁(ci)閥：

原理：它是(shi)種直(zhi)動和(he)(he)導式相結合(he)的原理，當入口(kou)與(yu)出口(kou)沒有壓差(cha)(cha)時，通電(dian)后，電(dian)磁力(li)(li)直(zhi)接把(ba)導小閥(fa)(fa)(fa)(fa)和(he)(he)主(zhu)閥(fa)(fa)(fa)(fa)關(guan)閉(bi)件(jian)依(yi)次向上(shang)(shang)提起(qi)，閥(fa)(fa)(fa)(fa)門(men)打(da)開。當入口(kou)與(yu)出口(kou)達到啟(qi)動壓差(cha)(cha)時，通電(dian)后，電(dian)磁力(li)(li)導小閥(fa)(fa)(fa)(fa)，主(zhu)閥(fa)(fa)(fa)(fa)下(xia)(xia)腔壓力(li)(li)上(shang)(shang)升，上(shang)(shang)腔壓力(li)(li)下(xia)(xia)降(jiang)，從而(er)利用壓差(cha)(cha)把(ba)主(zhu)閥(fa)(fa)(fa)(fa)向上(shang)(shang)推開；斷電(dian)時，導閥(fa)(fa)(fa)(fa)利用彈簧力(li)(li)或介質(zhi)壓力(li)(li)推動關(guan)閉(bi)件(jian)，向下(xia)(xia)移動，使閥(fa)(fa)(fa)(fa)門(men)關(guan)閉(bi)。

特點：在零壓差或(huo)真(zhen)空、高(gao)壓時亦(yi)能可*動作，但功率較大，要(yao)求必須水平安裝。

導式電磁閥：

原(yuan)理：通電時，電磁力(li)把導孔(kong)(kong)(kong)打開(kai)，上腔室(shi)壓力(li)迅(xun)(xun)速下(xia)降，在關(guan)(guan)(guan)(guan)閉(bi)件(jian)周圍形成(cheng)上低下(xia)高(gao)的(de)壓差，流體壓力(li)推(tui)動(dong)(dong)關(guan)(guan)(guan)(guan)閉(bi)件(jian)向(xiang)上移動(dong)(dong)，閥(fa)(fa)門打開(kai)；斷(duan)電時，彈簧力(li)把導孔(kong)(kong)(kong)關(guan)(guan)(guan)(guan)閉(bi)，入口(kou)壓力(li)通過(guo)旁通孔(kong)(kong)(kong)迅(xun)(xun)速腔室(shi)在關(guan)(guan)(guan)(guan)閥(fa)(fa)件(jian)周圍形成(cheng)下(xia)低上高(gao)的(de)壓差，流體壓力(li)推(tui)動(dong)(dong)關(guan)(guan)(guan)(guan)閉(bi)件(jian)向(xiang)下(xia)移動(dong)(dong)，關(guan)(guan)(guan)(guan)閉(bi)閥(fa)(fa)門。

電磁閥在(zai)我(wo)(wo)們的(de)中應用十分廣泛，我(wo)(wo)們在(zai)對的(de)維護中定(ding)遇見過不少有關(guan)電磁閥的(de)問題，也(ye)處理過各種各樣的(de)故(gu)(gu)障(zhang)(zhang)(zhang)，大(da)家(jia)(jia)也(ye)定(ding)積累了不少有關(guan)電磁閥故(gu)(gu)障(zhang)(zhang)(zhang)處理的(de)經驗，而我(wo)(wo)在(zai)維護中處理電磁閥故(gu)(gu)障(zhang)(zhang)(zhang)相(xiang)對別的(de)儀(yi)控(kong)故(gu)(gu)障(zhang)(zhang)(zhang)相(xiang)對較少，現在(zai)我(wo)(wo)就(jiu)這(zhe)個問題起和大(da)家(jia)(jia)討(tao)論，渴望從大(da)家(jia)(jia)那里學習更多的(de)經驗，共(gong)同提高。

我們對(dui)(dui)電(dian)磁(ci)(ci)(ci)閥(fa)有(you)個(ge)(ge)初(chu)步的(de)認識，電(dian)磁(ci)(ci)(ci)閥(fa)是(shi)由(you)電(dian)磁(ci)(ci)(ci)線(xian)圈(quan)(quan)和(he)磁(ci)(ci)(ci)芯組(zu)(zu)成(cheng)(cheng)，是(shi)包(bao)含個(ge)(ge)或(huo)幾個(ge)(ge)孔(kong)的(de)閥(fa)體(ti)(ti)(ti)。當線(xian)圈(quan)(quan)通(tong)電(dian)或(huo)斷(duan)電(dian)時，磁(ci)(ci)(ci)芯的(de)運轉將導致流體(ti)(ti)(ti)通(tong)過閥(fa)體(ti)(ti)(ti)或(huo)被切斷(duan)，以達到(dao)改變流體(ti)(ti)(ti)方向的(de)目的(de)。電(dian)磁(ci)(ci)(ci)閥(fa)的(de)電(dian)磁(ci)(ci)(ci)部件(jian)由(you)固定鐵(tie)芯、動鐵(tie)芯、線(xian)圈(quan)(quan)等(deng)部件(jian)組(zu)(zu)成(cheng)(cheng)；閥(fa)體(ti)(ti)(ti)部分由(you)滑閥(fa)芯、滑閥(fa)套、彈簧底(di)座等(deng)組(zu)(zu)成(cheng)(cheng)。電(dian)磁(ci)(ci)(ci)線(xian)圈(quan)(quan)被直接(jie)安裝在閥(fa)體(ti)(ti)(ti)上(shang)，閥(fa)體(ti)(ti)(ti)被封(feng)閉在密封(feng)管(guan)中，構成(cheng)(cheng)個(ge)(ge)簡潔(jie)、緊湊的(de)組(zu)(zu)合。我們在中常用的(de)電(dian)磁(ci)(ci)(ci)閥(fa)有(you)二位(wei)三通(tong)、二位(wei)四(si)通(tong)、二位(wei)五通(tong)等(deng)。這(zhe)里說說二位(wei)的(de)含義：對(dui)(dui)于電(dian)磁(ci)(ci)(ci)閥(fa)來(lai)說就是(shi)帶電(dian)和(he)失電(dian)，對(dui)(dui)于所控(kong)制的(de)閥(fa)門來(lai)說就是(shi)開(kai)和(he)關。

我(wo)們制氧機儀(yi)控(kong)系統(tong)中，二位三通電磁閥用的zui多，它在中可用來接通或切斷(duan)氣   源，從而對氣動(dong)控(kong)制膜頭(tou)氣路進行切換。

它由閥體、閥罩、電(dian)(dian)(dian)磁組件、彈(dan)簧(huang)及密封(feng)結構等部件組成，動鐵芯(xin)底(di)部的(de)密封(feng)塊(kuai)借助(zhu)彈(dan)簧(huang)的(de)壓力將(jiang)閥體進(jin)氣(qi)(qi)口(kou)關(guan)閉(bi)。通電(dian)(dian)(dian)后，電(dian)(dian)(dian)磁鐵吸(xi)合，動鐵芯(xin)上部帶彈(dan)簧(huang)的(de)密封(feng)塊(kuai)把(ba)排(pai)氣(qi)(qi)口(kou)關(guan)閉(bi)，氣(qi)(qi)流從進(jin)氣(qi)(qi)口(kou)進(jin)入膜(mo)(mo)頭，起到(dao)控制作用。當失(shi)電(dian)(dian)(dian)時，電(dian)(dian)(dian)磁力消失(shi)，動鐵芯(xin)在(zai)(zai)彈(dan)簧(huang)力作用下(xia)離開(kai)固定鐵芯(xin)，向下(xia)移動，將(jiang)排(pai)氣(qi)(qi)口(kou)打開(kai)，堵住進(jin)氣(qi)(qi)口(kou)，膜(mo)(mo)頭氣(qi)(qi)流經排(pai)氣(qi)(qi)口(kou)排(pai)出，膜(mo)(mo)片恢復原來位置(zhi)。在(zai)(zai)我們的(de)制氧設(she)備中，在(zai)(zai)透平膨脹(zhang)機進(jin)口(kou)薄膜(mo)(mo)調節(jie)閥的(de)緊急切斷等處有應用。

四通電磁閥在我(wo)們的中應用也很多，其工(gong)作原理(li)如下：

當有(you)電流(liu)(liu)通(tong)過線圈時(shi)，產生(sheng)勵(li)磁(ci)作(zuo)用(yong)，固定鐵(tie)芯(xin)吸合(he)動(dong)鐵(tie)芯(xin)，動(dong)鐵(tie)芯(xin)帶(dai)動(dong)滑(hua)(hua)閥(fa)(fa)芯(xin)并(bing)壓縮(suo)彈簧(huang)，改(gai)變了(le)滑(hua)(hua)閥(fa)(fa)芯(xin)的位置，從而(er)改(gai)變了(le)流(liu)(liu)體(ti)的方向。當線圈失電時(shi)，依靠彈簧(huang)的彈力推動(dong)滑(hua)(hua)閥(fa)(fa)芯(xin)，頂(ding)回動(dong)鐵(tie)芯(xin)，使流(liu)(liu)體(ti)按(an)原(yuan)來的方向流(liu)(liu)動(dong)。在我們制(zhi)(zhi)(zhi)氧中，分子(zi)篩切換系統強(qiang)制(zhi)(zhi)(zhi)閥(fa)(fa)的開關(guan)就是通(tong)過二(er)位四(si)通(tong)電磁(ci)閥(fa)(fa)來控制(zhi)(zhi)(zhi)的，氣(qi)流(liu)(liu)分別供強(qiang)制(zhi)(zhi)(zhi)閥(fa)(fa)的活塞兩端。從而(er)來控制(zhi)(zhi)(zhi)強(qiang)制(zhi)(zhi)(zhi)閥(fa)(fa)的啟(qi)閉(bi)。

電磁閥的故(gu)障(zhang)將直接影響到(dao)切換閥和調節閥的動(dong)作，常見的故(gu)障(zhang)有電磁閥不動(dong)作，應從以下幾方面(mian)排查：

（1）電(dian)磁(ci)閥接線頭(tou)松動或線頭(tou)脫落，電(dian)磁(ci)閥不得電(dian)，可緊固線頭(tou)。

（2）電(dian)磁(ci)閥線圈燒壞(huai)，可(ke)拆下(xia)電(dian)磁(ci)閥的接線，用萬用表測量，如果開路(lu)，則電(dian)磁(ci)閥線圈燒壞(huai)。原因(yin)有(you)線圈受潮，引起緣不好而漏磁(ci)，造成線圈內電(dian)流過大而燒毀，因(yin)此要防止雨(yu)水進入電(dian)磁(ci)閥。此外，彈簧(huang)過硬，反作用力過大，線圈匝數(shu)太少，吸力不夠(gou)也(ye)可(ke)使(shi)得線圈燒毀。緊急處理時，可(ke)將線圈上(shang)的手動按鈕由(you)正常(chang)工作時的“0"位(wei)打(da)(da)到“1"位(wei)，使(shi)得閥打(da)(da)開。

（3）電磁閥卡住。電磁閥的滑閥套與閥芯的配(pei)合(he)間隙很(hen)小（小于0.008mm），般都是單(dan)件裝配(pei)，當(dang)有機(ji)械雜(za)質(zhi)帶(dai)入或潤滑油(you)太少時(shi)，很(hen)容易(yi)卡住。處理方法可(ke)用鋼絲從頭部(bu)小孔捅入，使(shi)其彈回。根本的解決方法是要(yao)將電磁閥拆下，取出閥芯及(ji)閥芯套，用CCI4清洗，使(shi)得閥芯在閥套內動作靈活。拆卸(xie)時(shi)應注(zhu)意各部(bu)件的裝配(pei)順序及(ji)外部(bu)接線位置，以便重(zhong)新裝配(pei)及(ji)接線正(zheng)確(que)，還要(yao)檢查油(you)霧器噴油(you)孔是否堵塞，潤滑油(you)是否足(zu)夠(gou)。漏氣。漏氣會造成空氣壓力不足(zu)，使(shi)得強(qiang)制閥的啟閉困難，原因是密封墊(dian)片損(sun)壞(huai)或滑閥磨損(sun)而(er)造成幾個(ge)空腔竄氣。

在處(chu)(chu)理(li)切換(huan)系(xi)統(tong)的電(dian)磁(ci)閥(fa)故障(zhang)時，應選擇適當的時機(ji)， 等該(gai)電(dian)磁(ci)閥(fa)處(chu)(chu)于失(shi)電(dian)時進行(xing)處(chu)(chu)理(li)，若在個切換(huan)間隙內(nei)處(chu)(chu)理(li)不完，可將切換(huan)系(xi)統(tong)暫停，從容(rong)處(chu)(chu)理(li)。

SMC電磁閥 2位雙電控溫度范圍