力士樂電磁閥是(shi)(shi)(shi)用(yong)電磁控(kong)制(zhi)的(de)(de)(de)工(gong)(gong)業(ye)設備，是(shi)(shi)(shi)用(yong)來控(kong)制(zhi)流體的(de)(de)(de)自動化基礎元(yuan)件，屬于執行器，并不(bu)(bu)(bu)限于液壓、氣(qi)動。用(yong)在工(gong)(gong)業(ye)控(kong)制(zhi)系(xi)統中調整(zheng)介(jie)質的(de)(de)(de)方向(xiang)、流量、速(su)度和(he)其他的(de)(de)(de)參數。電磁閥可(ke)以(yi)配合不(bu)(bu)(bu)同(tong)的(de)(de)(de)電路來實現預期(qi)的(de)(de)(de)控(kong)制(zhi)，而控(kong)制(zhi)的(de)(de)(de)精度和(he)靈活(huo)性都能(neng)夠保(bao)證(zheng)。電磁閥有很多種(zhong)，不(bu)(bu)(bu)同(tong)的(de)(de)(de)電磁閥在控(kong)制(zhi)系(xi)統的(de)(de)(de)不(bu)(bu)(bu)同(tong)位置發揮作用(yong)，常(chang)用(yong)的(de)(de)(de)是(shi)(shi)(shi)單向(xiang)閥、安全閥、方向(xiang)控(kong)制(zhi)閥、速(su)度調節閥等(deng)。

原(yuan)理：通(tong)電時(shi)，電磁力(li)(li)把(ba)先導孔(kong)打開，上(shang)腔(qiang)室(shi)壓(ya)(ya)力(li)(li)迅速(su)下降，在敞(chang)(chang)(chang)開件周圍形成上(shang)低(di)下高(gao)的(de)壓(ya)(ya)差，流體壓(ya)(ya)力(li)(li)推動敞(chang)(chang)(chang)開件向上(shang)移動，閥門打開；斷(duan)電時(shi)，彈簧力(li)(li)把(ba)先導孔(kong)敞(chang)(chang)(chang)開，入口壓(ya)(ya)力(li)(li)通(tong)過旁通(tong)孔(kong)迅速(su)腔(qiang)室(shi)在關閥件周圍形成下低(di)上(shang)高(gao)的(de)壓(ya)(ya)差，流體壓(ya)(ya)力(li)(li)推動敞(chang)(chang)(chang)開件向下移動，敞(chang)(chang)(chang)開閥門。

特點：體(ti)積小，功率低，流體(ti)壓(ya)力范圍上限較高，可任意安裝但(dan)必須滿足流體(ti)壓(ya)差(cha)條件(jian)。

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