氣動通風蝶閥是由活塞式(shi)氣(qi)(qi)(qi)(qi)動(dong)(dong)(dong)執行器和蝶閥(fa)(fa)(fa)組成(cheng)。根據作(zuo)用(yong)(yong)方(fang)式(shi)可(ke)(ke)分為(wei)氣(qi)(qi)(qi)(qi)動(dong)(dong)(dong)調節蝶閥(fa)(fa)(fa)型(xing)和氣(qi)(qi)(qi)(qi)動(dong)(dong)(dong)開(kai)(kai)關(guan)蝶閥(fa)(fa)(fa)。目前(qian)氣(qi)(qi)(qi)(qi)動(dong)(dong)(dong)蝶閥(fa)(fa)(fa)在低(di)壓大(da)中口徑(jing)(jing)管道上(shang)的使用(yong)(yong)越來越多。氣(qi)(qi)(qi)(qi)動(dong)(dong)(dong)通風蝶閥(fa)(fa)(fa)的主要優點(dian)(dian)，結構簡(jian)單，體積小重量輕，造價低(di)。氣(qi)(qi)(qi)(qi)動(dong)(dong)(dong)蝶閥(fa)(fa)(fa)可(ke)(ke)外配氣(qi)(qi)(qi)(qi)動(dong)(dong)(dong)閥(fa)(fa)(fa)門定位(wei)器，輸入控(kong)制(zhi)信號(4-20mADC或1-5VDC)氣(qi)(qi)(qi)(qi)源即可(ke)(ke)控(kong)制(zhi)運轉(zhuan)。亦可(ke)(ke)配行程限(xian)位(wei)開(kai)(kai)關(guan)、電磁閥(fa)(fa)(fa)、三聯件及0.4-0.7MPa氣(qi)(qi)(qi)(qi)源可(ke)(ke)實現開(kai)(kai)關(guan)操作(zuo)，并送出二對無(wu)源觸點(dian)(dian)信號指示閥(fa)(fa)(fa)門的開(kai)(kai)關(guan)。氣(qi)(qi)(qi)(qi)動(dong)(dong)(dong)蝶閥(fa)(fa)(fa)結構簡(jian)單緊湊，加工(gong)方(fang)便，易制(zhi)成(cheng)大(da)口徑(jing)(jing)，具有自清(qing)洗(xi)作(zuo)用(yong)(yong)，阻(zu)力(li)系數小，流(liu)通能力(li)大(da)。氣(qi)(qi)(qi)(qi)動(dong)(dong)(dong)蝶閥(fa)(fa)(fa)該特點(dian)(dian)尤(you)其顯著，安裝在高空暗道，經過二位(wei)五通電磁閥(fa)(fa)(fa)控(kong)制(zhi)操作(zuo)方(fang)便，也可(ke)(ke)調節流(liu)量介質。流(liu)體阻(zu)力(li)較(jiao)小，中大(da)口徑(jing)(jing)的氣(qi)(qi)(qi)(qi)動(dong)(dong)(dong)蝶閥(fa)(fa)(fa)全開(kai)(kai)時有效流(liu)通面積較(jiao)大(da)，啟閉迅(xun)速省(sheng)力(li)，蝶扳旋轉(zhuan)90角度(du)即可(ke)(ke)完成(cheng)啟閉，氣(qi)(qi)(qi)(qi)動(dong)(dong)(dong)蝶閥(fa)(fa)(fa)不僅(jin)在石油(you)、煤氣(qi)(qi)(qi)(qi)、化工(gong)、水處理(li)等一般(ban)工(gong)業上(shang)得到(dao)廣泛應用(yong)(yong)，而且還(huan)應用(yong)(yong)于熱電站的冷卻(que)水系統。