一、用(yong)途(tu)及(ji)特(te)點(dian)庫(ku)頂(ding)切(qie)換(huan)閥(fa)安(an)裝(zhuang)在(zai)料(liao)倉(cang)頂(ding)部(bu)，作(zuo)為(wei)輸(shu)送(song)管(guan)線(xian)料(liao)倉(cang)間(jian)切(qie)換(huan)之(zhi)用(yong)，具(ju)有(you)切(qie)換(huan)方(fang)便(bian)，密(mi)封(feng)性(xing)好(hao)，結(jie)構(gou)緊(jin)湊(cou)，占(zhan)地(di)空(kong)間(jian)小(xiao)的(de)優(you)點(dian)，是(shi)氣(qi)力(li)輸(shu)送(song)係(xi)統(tong)中(zhong)重(zhong)要(yao)的(de)部(bu)件(jian)。該(gai)閥(fa)采(cai)用(yong)衝(chong)氣(qi)式(shi)密(mi)封(feng)圈(quan)，，閥(fa)門(men)啟(qi)閉(bi)時(shi)，閥(fa)芯(xin)與(yu)密(mi)封(feng)圈(quan)之(zhi)間(jian)無(wu)接(jie)觸(chu)，當(dang)閥(fa)門(men)切(qie)換(huan)完(wan)成(cheng)後(hou)，密(mi)封(feng)圈(quan)充(chong)氣(qi)實(shi)現(xian)彈(dan)性(xing)變(bian)形(xing)進(jin)行(xing)密(mi)封(feng)。該(gai)閥(fa)設(she)有(you)到(dao)位(wei)開(kai)關(guan)，並(bing)可(ke)將(jiang)開(kai)關(guan)信(xin)號(hao)送(song)入(ru)PLC
，進行遠程控製；密封圈具有檢測壓力開關，可智能檢測密封圈是否失效破損

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