氣動閥(fa)是借助壓縮(suo)空(kong)氣驅動的閥(fa)門。

一、 氣動(dong)閥門主要種類：

1) ?扭距式汽缸球閥

2) 氣(qi)動O型切(qie)斷(duan)球閥

3) 氣動V型(xing)調節(jie)球閥

4) 電動閥

5) 氣動直行(xing)程式隔膜(mo)閥

6) ?電磁隔膜閥

氣(qi)動(dong)調節(jie)閥的(de)工(gong)作(zuo)原理：氣(qi)動(dong)調節(jie)閥由執行(xing)機(ji)構和調節(jie)機(ji)構組(zu)成。執行(xing)機(ji)構是調節(jie)閥的(de)推(tui)(tui)力部件(jian)(jian)，它按控制信(xin)號壓力的(de)大(da)小產生(sheng)相應的(de)推(tui)(tui)力，推(tui)(tui)動(dong)調節(jie)機(ji)構動(dong)作(zuo)。閥體是氣(qi)動(dong)調節(jie)閥的(de)調節(jie)部件(jian)(jian)，它直接與調節(jie)介質接觸，調節(jie)該(gai)流體的(de)流量。

板(ban)(ban)(ban)(ban)式閥出(chu)現早，油路(lu)設計(ji)為直接。可以回想(xiang)小時候(hou)下(xia)雨或(huo)在(zai)(zai)海邊玩(wan)沙子(zi)(zi)，在(zai)(zai)地(di)上(shang)筑起(qi)各(ge)種(zhong)“堤(di)壩”控(kong)制水流的走向(xiang)。板(ban)(ban)(ban)(ban)式閥也是如此，做(zuo)(zuo)一(yi)塊板(ban)(ban)(ban)(ban)子(zi)(zi)，在(zai)(zai)板(ban)(ban)(ban)(ban)子(zi)(zi)里(li)面制做(zuo)(zuo)各(ge)種(zhong)通道，二位(wei)五通板(ban)(ban)(ban)(ban)式閥生產商，通道有開口通向(xiang)板(ban)(ban)(ban)(ban)子(zi)(zi)外面，板(ban)(ban)(ban)(ban)式閥安裝在(zai)(zai)這個板(ban)(ban)(ban)(ban)上(shang)，控(kong)制這個板(ban)(ban)(ban)(ban)子(zi)(zi)里(li)的通道中的液(ye)體的通斷，流向(xiang)等。很直觀的設計(ji)思路(lu)。另外，二位(wei)五通板(ban)(ban)(ban)(ban)式閥公(gong)司，當時的電氣自(zi)動(dong)化控(kong)制還沒有發展起(qi)來，各(ge)種(zhong)控(kong)制邏輯(ji)還需要在(zai)(zai)設計(ji)板(ban)(ban)(ban)(ban)子(zi)(zi)里(li)的油路(lu)上(shang)做(zuo)(zuo)文章(zhang)。用(yong)油路(lu)的邏輯(ji)實現液(ye)壓(ya)執行器(qi)（油缸等）的執行順(shun)序。

氣控板(ban)(ban)(ban)式(shi)閥(fa)不(bu)需(xu)(xu)要鋪(pu)設氣源(yuan)管線，直接接通(tong)電源(yuan)和控制信號就可(ke)以(yi)使(shi)用(yong)。在(zai)(zai)使(shi)用(yong)過程(cheng)中比較(jiao)(jiao)噪聲也(ye)比較(jiao)(jiao)小，二位五通(tong)板(ban)(ban)(ban)式(shi)閥(fa)，動(dong)(dong)(dong)作也(ye)相對(dui)平穩。并沒有出現(xian)氣動(dong)(dong)(dong)調(diao)(diao)節(jie)(jie)閥(fa)調(diao)(diao)節(jie)(jie)滯(zhi)后的(de)現(xian)象。電動(dong)(dong)(dong)調(diao)(diao)節(jie)(jie)閥(fa)的(de)使(shi)用(yong)壽命長，二位五通(tong)板(ban)(ban)(ban)式(shi)閥(fa)廠家，可(ke)靠性高，但(dan)是無法(fa)在(zai)(zai)斷電時(shi)自(zi)動(dong)(dong)(dong)復位。氣動(dong)(dong)(dong)調(diao)(diao)節(jie)(jie)閥(fa)相對(dui)而言(yan)成本較(jiao)(jiao)低(di)，氣動(dong)(dong)(dong)調(diao)(diao)節(jie)(jie)閥(fa)還具有防(fang)火防(fang)爆的(de)特點，在(zai)(zai)石油化工(gong)行業(ye)應用(yong)較(jiao)(jiao)多。氣動(dong)(dong)(dong)調(diao)(diao)節(jie)(jie)閥(fa)需(xu)(xu)要配置閥(fa)門、過濾(lv)減壓閥(fa)、保(bao)位閥(fa)等附件(jian)，安裝(zhuang)程(cheng)序復雜。并且(qie)橡膠膜片需(xu)(xu)要定(ding)期更換，它能夠在(zai)(zai)斷信號或斷氣時(shi)使(shi)氣動(dong)(dong)(dong)調(diao)(diao)節(jie)(jie)閥(fa)打開或關閉(bi)，能夠保(bao)證設備安全。