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發布時(shi)間(jian):2021-12-21 11:32:07 人氣:100318 來(lai)源:
單端面鄱陽機械密封
單端面鄱陽機械密封(如圖)由(you)一對密封端面組成的為(wei)單端面密封,單端面密封結構簡(jian)單,制造(zao)、安裝容(rong)易,一般于介質(zhi)本身潤滑性好和(he)允許微量泄漏(lou)的條(tiao)件,是(shi)常(chang)用(yong)(yong)的密封型(xing)式,當(dang)介質(zhi)有(you)毒、易燃、易爆(bao)以及(ji)對泄漏(lou)量有(you)嚴格要(yao)求時,不(bu)宜使用(yong)(yong)。
雙端面鄱陽機械密封
雙端面鄱陽機械密封(如圖)是由二對密(mi)封端(duan)(duan)(duan)面(mian)(mian)(mian)組成(cheng)的為雙(shuang)(shuang)(shuang)(shuang)端(duan)(duan)(duan)面(mian)(mian)(mian)密(mi)封。有軸(zhou)向雙(shuang)(shuang)(shuang)(shuang)端(duan)(duan)(duan)面(mian)(mian)(mian)密(mi)封和徑向雙(shuang)(shuang)(shuang)(shuang)端(duan)(duan)(duan)面(mian)(mian)(mian)密(mi)封。沿徑向布置(zhi)的雙(shuang)(shuang)(shuang)(shuang)端(duan)(duan)(duan)面(mian)(mian)(mian)密(mi)封結構(gou)較(jiao)軸(zhou)向雙(shuang)(shuang)(shuang)(shuang)端(duan)(duan)(duan)面(mian)(mian)(mian)密(mi)封緊(jin)湊。雙(shuang)(shuang)(shuang)(shuang)端(duan)(duan)(duan)面(mian)(mian)(mian)密(mi)封適用于介質本身潤滑(hua)性(xing)差、有毒、易(yi)燃、易(yi)爆、易(yi)揮發、含磨粒及(ji)氣體(ti)等。
軸向雙端面(mian)密封有(you)面(mian)對面(mian)或(huo)背(bei)靠(kao)背(bei)布(bu)置的(de)結構(gou),工作時需在(zai)兩(liang)對端面(mian)間引入高(gao)于介質(zhi)壓力(li)0.05~0.15MPa的(de)封液以改善端面(mian)間的(de)潤滑及冷卻條(tiao)件,并把介質(zhi)與外界隔離,有(you)可能實現介質(zhi)“零泄(xie)漏”。