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發布時間(jian):2021-12-21 11:32:07 人氣:100397 來源:
單端面茂縣機械密封
單端面茂縣機械密封(如圖)由一對密封端面(mian)(mian)組(zu)成(cheng)的為(wei)單端面(mian)(mian)密封,單端面(mian)(mian)密封結構簡單,制(zhi)造、安(an)裝容易,一般(ban)于介質(zhi)本(ben)身潤滑(hua)性好(hao)和允許微量泄漏的條件(jian),是常用(yong)的密封型(xing)式,當(dang)介質(zhi)有毒、易燃(ran)、易爆以及(ji)對泄漏量有嚴格要求時,不宜使用(yong)。
雙端面茂縣機械密封
雙端面茂縣機械密封(如圖(tu))是(shi)由二對密(mi)(mi)封(feng)端(duan)面(mian)(mian)(mian)(mian)組(zu)成的為雙(shuang)(shuang)端(duan)面(mian)(mian)(mian)(mian)密(mi)(mi)封(feng)。有(you)(you)軸(zhou)向雙(shuang)(shuang)端(duan)面(mian)(mian)(mian)(mian)密(mi)(mi)封(feng)和徑向雙(shuang)(shuang)端(duan)面(mian)(mian)(mian)(mian)密(mi)(mi)封(feng)。沿徑向布置的雙(shuang)(shuang)端(duan)面(mian)(mian)(mian)(mian)密(mi)(mi)封(feng)結(jie)構較(jiao)軸(zhou)向雙(shuang)(shuang)端(duan)面(mian)(mian)(mian)(mian)密(mi)(mi)封(feng)緊湊。雙(shuang)(shuang)端(duan)面(mian)(mian)(mian)(mian)密(mi)(mi)封(feng)適用于介質本(ben)身潤滑性差、有(you)(you)毒、易燃(ran)、易爆、易揮發、含磨粒(li)及氣體等。
軸向雙端面密(mi)封有(you)面對面或背靠背布(bu)置的結構,工(gong)作時(shi)需在兩對端面間(jian)引入(ru)高于介質(zhi)壓力0.05~0.15MPa的封液以(yi)改善端面間(jian)的潤(run)滑及(ji)冷卻條件,并把介質(zhi)與外界隔離,有(you)可(ke)能實現介質(zhi)“零泄漏”。