日本(ben)smc電磁(ci)閥(fa)介紹說明(ming)：

SMC電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)里有(you)密閉的(de)(de)(de)腔(qiang)，在的(de)(de)(de)不(bu)同(tong)(tong)位置開有(you)通(tong)孔，每(mei)個孔都(dou)通(tong)向不(bu)同(tong)(tong)的(de)(de)(de)油(you)(you)管(guan)，腔(qiang)中間是閥(fa)(fa)，兩(liang)面是兩(liang)塊(kuai)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)鐵，哪面的(de)(de)(de)磁(ci)(ci)鐵線(xian)圈(quan)通(tong)電(dian)(dian)(dian)(dian)(dian)閥(fa)(fa)體(ti)就會被(bei)吸引到哪邊(bian)，通(tong)過(guo)控制(zhi)閥(fa)(fa)體(ti)的(de)(de)(de)移動(dong)(dong)來(lai)檔住或(huo)漏出不(bu)同(tong)(tong)的(de)(de)(de)排(pai)油(you)(you)的(de)(de)(de)孔，而進油(you)(you)孔是常(chang)開的(de)(de)(de)，液(ye)壓油(you)(you)就會進入不(bu)同(tong)(tong)的(de)(de)(de)排(pai)油(you)(you)管(guan)，然后通(tong)過(guo)油(you)(you)的(de)(de)(de)壓力來(lai)推動(dong)(dong)油(you)(you)剛的(de)(de)(de)活(huo)塞(sai)(sai)，活(huo)塞(sai)(sai)又帶(dai)動(dong)(dong)活(huo)塞(sai)(sai)桿，活(huo)塞(sai)(sai)竿帶(dai)動(dong)(dong)機(ji)械裝置動(dong)(dong)。這樣(yang)通(tong)過(guo)控制(zhi)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)鐵的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)就控制(zhi)了(le)機(ji)械運動(dong)(dong)。縱觀國內外(wai)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)，到目前為(wei)止，從(cong)(cong)動(dong)(dong)作方(fang)式上(shang)可(ke)分(fen)為(wei)三大類即：直動(dong)(dong)式、反沖(chong)(chong)式、先(xian)導式，而從(cong)(cong)閥(fa)(fa)瓣結構和材料(liao)上(shang)的(de)(de)(de)不(bu)同(tong)(tong)以(yi)及原理上(shang)的(de)(de)(de)區(qu)別反沖(chong)(chong)式又可(ke)分(fen)為(wei)：膜片(pian)式反沖(chong)(chong)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)、活(huo)塞(sai)(sai)式反沖(chong)(chong)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)；先(xian)導式又可(ke)分(fen)為(wei)：先(xian)導式膜片(pian)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)、先(xian)導式活(huo)塞(sai)(sai)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)；SMC電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)從(cong)(cong)閥(fa)(fa)座及密封(feng)材料(liao)上(shang)分(fen)又可(ke)分(fen)為(wei)：軟密封(feng)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)、鋼性密封(feng)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)、半(ban)鋼性密封(feng)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)。

日本smc電磁閥（圖(tu)）

SMC電磁閥的(de)(de)(de)內泄漏使控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)腔泄壓(ya)(ya)(ya)(ya)后，液(ye)(ye)(ye)控(kong)(kong)(kong)(kong)單向閥才能(neng)(neng)關閉，影響其(qi)鎖緊精度。但選用H型中位機(ji)能(neng)(neng)應非常慎重，因為當液(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)泵大(da)流(liu)(liu)量(liang)流(liu)(liu)經排(pai)(pai)油(you)管(guan)時，若(ruo)碰到排(pai)(pai)油(you)管(guan)道細長或(huo)局(ju)部阻塞或(huo)其(qi)他原(yuan)因而引起(qi)局(ju)部摩(mo)擦阻力（如(ru)裝有低(di)壓(ya)(ya)(ya)(ya)濾油(you)器(qi)或(huo)管(guan)接頭多等(deng)），可(ke)能(neng)(neng)使控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)活(huo)塞所(suo)受的(de)(de)(de)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)壓(ya)(ya)(ya)(ya)力較(jiao)高(gao)，致使液(ye)(ye)(ye)控(kong)(kong)(kong)(kong)單向閥無(wu)法關閉而使液(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)缸發生誤動作。Y型中位機(ji)能(neng)(neng)就不(bu)(bu)(bu)會(hui)形(xing)成這(zhe)種結果。液(ye)(ye)(ye)控(kong)(kong)(kong)(kong)單向閥只(zhi)(zhi)適用于反(fan)向油(you)流(liu)(liu)是(shi)一個(ge)封閉容(rong)腔的(de)(de)(de)情況，如(ru)液(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)缸的(de)(de)(de)一個(ge)腔或(huo)蓄能(neng)(neng)器(qi)等(deng)。這(zhe)個(ge)封閉容(rong)腔的(de)(de)(de)壓(ya)(ya)(ya)(ya)力只(zhi)(zhi)需釋放很少的(de)(de)(de)一點流(liu)(liu)量(liang)，即可(ke)將(jiang)(jiang)壓(ya)(ya)(ya)(ya)力卸(xie)掉。反(fan)向油(you)流(liu)(liu)一般不(bu)(bu)(bu)與一個(ge)連(lian)續供油(you)的(de)(de)(de)液(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)源相通(tong)。這(zhe)是(shi)因為卸(xie)荷閥芯打(da)開時通(tong)流(liu)(liu)面積很小油(you)速很高(gao)，壓(ya)(ya)(ya)(ya)力損(sun)失很大(da)，再(zai)加上這(zhe)時液(ye)(ye)(ye)壓(ya)(ya)(ya)(ya)源不(bu)(bu)(bu)斷供油(you)，將(jiang)(jiang)會(hui)導(dao)致反(fan)向壓(ya)(ya)(ya)(ya)力降不(bu)(bu)(bu)下來，需要很大(da)的(de)(de)(de)液(ye)(ye)(ye)控(kong)(kong)(kong)(kong)壓(ya)(ya)(ya)(ya)力才能(neng)(neng)使液(ye)(ye)(ye)控(kong)(kong)(kong)(kong)單向閥主(zhu)閥芯打(da)開。

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