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聯系客服,馬上詢價
發布時間:2021-12-17 11:55:16 人氣:98865 來源:
熱水(shui)泵集式(shi)密(mi)封(feng)的大(da)多數主要特性是其控(kong)制密(mi)封(feng)功能、摩(mo)擦(ca)(ca)(ca)力、磨損和(he)壽(shou)命的自動界(jie)面潤滑機理。一切取決于(yu)穿過界(jie)面并建立潤滑膜(mo)的液體(ti)以(yi)便密(mi)封(feng)在實(shi)際無接觸,通(tong)常是混(hun)合磨擦(ca)(ca)(ca),介于(yu)干摩(mo)擦(ca)(ca)(ca)和(he)完整(zheng)液膜(mo)之間的潤滑摩(mo)擦(ca)(ca)(ca)狀態下運(yun)行。在腔體(ti)壓(ya)力作用(yong)下介質穿過密(mi)封(feng)摩(mo)擦(ca)(ca)(ca)副端面,表面張力和(he)離心力在此(ci)(ci)時影響不大(da),流體(ti)壓(ya)力持續(xu)下降(jiang)直到它達到外部背壓(ya),此(ci)(ci)壓(ya)力作用(yong)類似于(yu)流體(ti)靜壓(ya)時軸承(cheng)的承(cheng)載(zai)功能。這取決于(yu)介質粘度、轉速和(he)端面間隙變化。
熱水泵集式(shi)密(mi)封(feng)要(yao)起到(dao)靜環(huan)(huan)(huan)和動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)的(de)(de)密(mi)封(feng)作(zuo)(zuo)用,同時也起到(dao)浮動(dong)(dong)(dong)(dong)(dong)緩沖(chong)作(zuo)(zuo)用,要(yao)求(qiu)靜環(huan)(huan)(huan)的(de)(de)輔助(zhu)密(mi)封(feng)元(yuan)件能保(bao)證靜環(huan)(huan)(huan)與壓蓋之間(jian)(jian)的(de)(de)密(mi)封(feng)性和靜環(huan)(huan)(huan)有一定(ding)的(de)(de)浮動(dong)(dong)(dong)(dong)(dong)性,動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)的(de)(de)輔助(zhu)密(mi)封(feng)元(yuan)件能保(bao)證動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)與軸與軸套(tao)之間(jian)(jian)的(de)(de)密(mi)封(feng)性和動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)的(de)(de)浮動(dong)(dong)(dong)(dong)(dong)性,材(cai)料要(yao)求(qiu)耐(nai)熱或耐(nai)寒并能與介(jie)質相(xiang)容。起到(dao)將軸的(de)(de)轉(zhuan)矩傳給動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)的(de)(de)作(zuo)(zuo)用,中間(jian)(jian)傳動(dong)(dong)(dong)(dong)(dong)的(de)(de)傳動(dong)(dong)(dong)(dong)(dong)銷、壓環(huan)(huan)(huan)—傳動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)、傳動(dong)(dong)(dong)(dong)(dong)銷—彈簧座均起傳動(dong)(dong)(dong)(dong)(dong)作(zuo)(zuo)用,材(cai)料要(yao)求(qiu)耐(nai)磨和耐(nai)腐蝕。
緊(jin)固件要(yao)起到(dao)靜、動環(huan)的(de)(de)定位、緊(jin)固和盛裝(zhuang)的(de)(de)作用,要(yao)求定位正確(que)(que),保證(zheng)摩擦副密封(feng)(feng)面處于正確(que)(que)的(de)(de)位置(zhi)并保持良(liang)好(hao)貼(tie)合(he)的(de)(de)彈簧(huang)比壓(ya)。同時(shi)要(yao)求拆(chai)裝(zhuang)方便(bian)、容易就(jiu)位、能重復利用。與輔助(zhu)密封(feng)(feng)配(pei)合(he)處,注(zhu)意安(an)裝(zhuang)密封(feng)(feng)環(huan)的(de)(de)導向側角和壓(ya)彈量。特別應注(zhu)意動環(huan)輔助(zhu)密封(feng)(feng)件與軸套配(pei)合(he)處要(yao)求耐腐蝕和耐磨損,必(bi)要(yao)時(shi)采用硬面復層(ceng)。
熱水泵集式(shi)密(mi)封一般配上平(ping)衡循環(huan)系(xi)統,可使用(yong)(yong)在(zai)易(yi)燃、易(yi)爆(bao)、有(you)毒及腐蝕(shi)、高真(zhen)空等(deng)對密(mi)封要求更為嚴格的(de)(de)場(chang)合。密(mi)封結構(gou)為外沖洗(xi)結構(gou),沖洗(xi)液可以(yi)為清潔的(de)(de)水也可為工業回用(yong)(yong)水,密(mi)封腔(qiang)壓力高于沖洗(xi)液的(de)(de)壓力,沖洗(xi)液在(zai)輔助套的(de)(de)上端(duan)輸入,在(zai)輔助套的(de)(de)下(xia)端(duan)輸出(chu),循環(huan)使用(yong)(yong),密(mi)封起到冷卻沖洗(xi)的(de)(de)作用(yong)(yong),其輔助裝(zhuang)置有(you)調溫器、平(ping)衡罐、強制(zhi)循環(huan)平(ping)衡系(xi)統等(deng)。