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聯系客服,馬上詢價
發布時(shi)間(jian):2021-12-17 11:55:16 人氣(qi):98052 來(lai)源:
熱(re)水(shui)泵(beng)集(ji)式密封的(de)(de)大多數主要(yao)特性是(shi)其控制密封功能、摩擦(ca)(ca)(ca)力(li)、磨損和壽命(ming)的(de)(de)自(zi)動界面(mian)潤(run)滑機(ji)理。一切取決于(yu)(yu)穿(chuan)過界面(mian)并建立潤(run)滑膜的(de)(de)液體(ti)(ti)以(yi)便密封在實(shi)際無接觸(chu),通常是(shi)混(hun)合磨擦(ca)(ca)(ca),介于(yu)(yu)干摩擦(ca)(ca)(ca)和完整(zheng)液膜之間的(de)(de)潤(run)滑摩擦(ca)(ca)(ca)狀態下(xia)運行。在腔體(ti)(ti)壓(ya)(ya)(ya)力(li)作用(yong)下(xia)介質穿(chuan)過密封摩擦(ca)(ca)(ca)副端(duan)面(mian),表面(mian)張力(li)和離心(xin)力(li)在此時(shi)影響不大,流(liu)體(ti)(ti)壓(ya)(ya)(ya)力(li)持續下(xia)降直(zhi)到它達到外部背壓(ya)(ya)(ya),此壓(ya)(ya)(ya)力(li)作用(yong)類似于(yu)(yu)流(liu)體(ti)(ti)靜(jing)壓(ya)(ya)(ya)時(shi)軸承的(de)(de)承載功能。這取決于(yu)(yu)介質粘度、轉速和端(duan)面(mian)間隙變化。
熱(re)水泵集式密封(feng)要(yao)起(qi)到(dao)靜(jing)環(huan)和動(dong)(dong)(dong)(dong)(dong)環(huan)的(de)密封(feng)作(zuo)用,同時(shi)也起(qi)到(dao)浮動(dong)(dong)(dong)(dong)(dong)緩沖作(zuo)用,要(yao)求(qiu)靜(jing)環(huan)的(de)輔(fu)助密封(feng)元件(jian)能保證靜(jing)環(huan)與(yu)壓蓋之間的(de)密封(feng)性(xing)和靜(jing)環(huan)有一(yi)定的(de)浮動(dong)(dong)(dong)(dong)(dong)性(xing),動(dong)(dong)(dong)(dong)(dong)環(huan)的(de)輔(fu)助密封(feng)元件(jian)能保證動(dong)(dong)(dong)(dong)(dong)環(huan)與(yu)軸與(yu)軸套之間的(de)密封(feng)性(xing)和動(dong)(dong)(dong)(dong)(dong)環(huan)的(de)浮動(dong)(dong)(dong)(dong)(dong)性(xing),材料要(yao)求(qiu)耐熱(re)或(huo)耐寒(han)并(bing)能與(yu)介質相容。起(qi)到(dao)將軸的(de)轉矩傳給動(dong)(dong)(dong)(dong)(dong)環(huan)的(de)作(zuo)用,中間傳動(dong)(dong)(dong)(dong)(dong)的(de)傳動(dong)(dong)(dong)(dong)(dong)銷(xiao)、壓環(huan)—傳動(dong)(dong)(dong)(dong)(dong)環(huan)、傳動(dong)(dong)(dong)(dong)(dong)銷(xiao)—彈簧座均起(qi)傳動(dong)(dong)(dong)(dong)(dong)作(zuo)用,材料要(yao)求(qiu)耐磨和耐腐蝕(shi)。
緊(jin)固件要(yao)起到靜、動環(huan)的定(ding)位(wei)、緊(jin)固和盛裝的作用(yong)(yong),要(yao)求定(ding)位(wei)正確,保(bao)證(zheng)摩擦副密(mi)封面處(chu)于正確的位(wei)置并保(bao)持良好貼合(he)的彈簧比壓(ya)。同時要(yao)求拆裝方便、容易就位(wei)、能重復利用(yong)(yong)。與(yu)輔助密(mi)封配合(he)處(chu),注意安裝密(mi)封環(huan)的導向側角和壓(ya)彈量。特(te)別應注意動環(huan)輔助密(mi)封件與(yu)軸套配合(he)處(chu)要(yao)求耐腐蝕(shi)和耐磨損(sun),必要(yao)時采用(yong)(yong)硬面復層。
熱水(shui)(shui)泵集式密(mi)(mi)封(feng)一般配上平(ping)衡(heng)循(xun)(xun)環(huan)系(xi)統,可(ke)使用(yong)在(zai)易(yi)燃、易(yi)爆、有毒及腐蝕、高真(zhen)空等對密(mi)(mi)封(feng)要(yao)求(qiu)更為(wei)嚴格的(de)場合。密(mi)(mi)封(feng)結構(gou)為(wei)外沖洗結構(gou),沖洗液可(ke)以(yi)為(wei)清潔的(de)水(shui)(shui)也(ye)可(ke)為(wei)工業回用(yong)水(shui)(shui),密(mi)(mi)封(feng)腔壓力高于沖洗液的(de)壓力,沖洗液在(zai)輔(fu)(fu)助套的(de)上端輸(shu)入,在(zai)輔(fu)(fu)助套的(de)下端輸(shu)出,循(xun)(xun)環(huan)使用(yong),密(mi)(mi)封(feng)起到(dao)冷(leng)卻(que)沖洗的(de)作用(yong),其輔(fu)(fu)助裝置有調溫器、平(ping)衡(heng)罐、強(qiang)制(zhi)循(xun)(xun)環(huan)平(ping)衡(heng)系(xi)統等。