與各種閥門相比，氣動角座截止(zhi)閥(fa)的原理基本上相同，惟一不同的是它通過壓縮空氣來開啟和關閉。而氣動角座截止閥主要是用在輸氣管上。那么 氣動(dong)角座截止(zhi)閥的原理是什么(me)？小(xiao)編就來給(gei)大(da)家(jia)分享(xiang)下。

　　通常氣動角座截止閥是(shi)全開全閉(bi)的。考慮(lv)到截止閥和球閥從流(liu)量特性(xing)出發，具有啟(qi)閉(bi)行程短、速度快、密(mi)封可靠(kao)、啟(qi)閉(bi)靜態力矩小等特點，因(yin)此適用于兩(liang)類產品。但是(shi)考慮(lv)到可靠(kao)性(xing)，主流(liu)產品還是(shi)氣動截止閥。

　　氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)角(jiao)座截(jie)止閥的(de)(de)(de)汽缸(gang)(gang)是定型制品，按(an)作(zuo)用方(fang)(fang)式可分(fen)為(wei)單動(dong)(dong)(dong)(dong)(dong)式和雙(shuang)動(dong)(dong)(dong)(dong)(dong)式。單動(dong)(dong)(dong)(dong)(dong)件帶有(you)復(fu)(fu)位(wei)(wei)(wei)(wei)圓柱彈(dan)簧，有(you)失氣(qi)(qi)(qi)自動(dong)(dong)(dong)(dong)(dong)復(fu)(fu)位(wei)(wei)(wei)(wei)功能，即失氣(qi)(qi)(qi)時(shi)氣(qi)(qi)(qi)缸(gang)(gang)活塞(或隔膜(mo))在(zai)彈(dan)簧的(de)(de)(de)作(zuo)用下(xia)(xia)，驅動(dong)(dong)(dong)(dong)(dong)氣(qi)(qi)(qi)缸(gang)(gang)的(de)(de)(de)推(tui)(tui)桿(gan)(gan)重新回到氣(qi)(qi)(qi)缸(gang)(gang)初(chu)始位(wei)(wei)(wei)(wei)置(zhi)(行程(cheng)的(de)(de)(de)原始位(wei)(wei)(wei)(wei)置(zhi))。雙(shuang)動(dong)(dong)(dong)(dong)(dong)式缸(gang)(gang)體(ti)(ti)無復(fu)(fu)位(wei)(wei)(wei)(wei)彈(dan)簧，推(tui)(tui)桿(gan)(gan)進(jin)退(tui)(tui)須依(yi)靠氣(qi)(qi)(qi)源(yuan)進(jin)出(chu)口位(wei)(wei)(wei)(wei)置(zhi)的(de)(de)(de)變化。從活塞上腔(qiang)進(jin)氣(qi)(qi)(qi)時(shi)，推(tui)(tui)桿(gan)(gan)向(xiang)下(xia)(xia)運動(dong)(dong)(dong)(dong)(dong)。從活塞下(xia)(xia)腔(qiang)進(jin)氣(qi)(qi)(qi)時(shi)，推(tui)(tui)桿(gan)(gan)向(xiang)上運動(dong)(dong)(dong)(dong)(dong)。雙(shuang)作(zuo)用缸(gang)(gang)體(ti)(ti)由(you)于沒有(you)復(fu)(fu)位(wei)(wei)(wei)(wei)彈(dan)簧，所以同(tong)徑單動(dong)(dong)(dong)(dong)(dong)缸(gang)(gang)體(ti)(ti)的(de)(de)(de)推(tui)(tui)力較大，但沒有(you)自動(dong)(dong)(dong)(dong)(dong)復(fu)(fu)位(wei)(wei)(wei)(wei)功能。很明顯，不同(tong)的(de)(de)(de)進(jin)氣(qi)(qi)(qi)位(wei)(wei)(wei)(wei)置(zhi)使得推(tui)(tui)桿(gan)(gan)的(de)(de)(de)方(fang)(fang)向(xiang)不同(tong)。在(zai)推(tui)(tui)桿(gan)(gan)的(de)(de)(de)后腔(qiang)，當(dang)進(jin)氣(qi)(qi)(qi)位(wei)(wei)(wei)(wei)置(zhi)，進(jin)氣(qi)(qi)(qi)推(tui)(tui)動(dong)(dong)(dong)(dong)(dong)推(tui)(tui)桿(gan)(gan)前(qian)進(jin)，這就(jiu)是所謂的(de)(de)(de)正動(dong)(dong)(dong)(dong)(dong)缸(gang)(gang)。相反(fan)的(de)(de)(de)是，當(dang)進(jin)氣(qi)(qi)(qi)位(wei)(wei)(wei)(wei)置(zhi)在(zai)推(tui)(tui)桿(gan)(gan)的(de)(de)(de)同(tong)側(ce)時(shi)，進(jin)氣(qi)(qi)(qi)使推(tui)(tui)桿(gan)(gan)后退(tui)(tui)，這種(zhong)方(fang)(fang)式稱為(wei)反(fan)作(zuo)用缸(gang)(gang)。由(you)于氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)角(jiao)座截(jie)止閥一(yi)般需要失氣(qi)(qi)(qi)保護，所以一(yi)般選用單動(dong)(dong)(dong)(dong)(dong)缸(gang)(gang)。

　　以上(shang)就是小編(bian)今(jin)天(tian)為大家帶(dai)來(lai)的全部知(zhi)識內容了，希望能夠(gou)幫助到大家，同時也歡迎您(nin)持續關注斯凱(kai)浮(fu)閥(fa)業，小編(bian)會定(ding)期為您(nin)帶(dai)來(lai)更多相關產品的知(zhi)識信息供您(nin)參(can)考。