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發布時(shi)間:2021-12-17 11:55:16 人氣:98742 來源(yuan):
熱水泵集式密(mi)封(feng)的大多數主要特(te)性是(shi)其控制密(mi)封(feng)功能(neng)、摩(mo)(mo)擦(ca)力(li)(li)(li)、磨損和(he)壽命的自(zi)動界面(mian)潤滑(hua)機(ji)理。一切(qie)取決于(yu)(yu)(yu)穿過界面(mian)并建立潤滑(hua)膜的液體(ti)(ti)以便密(mi)封(feng)在實際(ji)無接觸(chu),通常是(shi)混合磨擦(ca),介(jie)于(yu)(yu)(yu)干摩(mo)(mo)擦(ca)和(he)完整液膜之間的潤滑(hua)摩(mo)(mo)擦(ca)狀態(tai)下運行。在腔(qiang)體(ti)(ti)壓(ya)力(li)(li)(li)作(zuo)用下介(jie)質穿過密(mi)封(feng)摩(mo)(mo)擦(ca)副端面(mian),表面(mian)張(zhang)力(li)(li)(li)和(he)離心(xin)力(li)(li)(li)在此(ci)(ci)時(shi)影響不大,流(liu)體(ti)(ti)壓(ya)力(li)(li)(li)持續下降直到它達到外部(bu)背壓(ya),此(ci)(ci)壓(ya)力(li)(li)(li)作(zuo)用類似(si)于(yu)(yu)(yu)流(liu)體(ti)(ti)靜壓(ya)時(shi)軸承的承載功能(neng)。這(zhe)取決于(yu)(yu)(yu)介(jie)質粘度、轉速和(he)端面(mian)間隙變化。
熱水泵(beng)集式密(mi)(mi)封(feng)要(yao)起到(dao)靜(jing)環(huan)和動(dong)(dong)(dong)環(huan)的(de)(de)(de)(de)密(mi)(mi)封(feng)作(zuo)用,同時也起到(dao)浮(fu)動(dong)(dong)(dong)緩沖作(zuo)用,要(yao)求(qiu)(qiu)靜(jing)環(huan)的(de)(de)(de)(de)輔(fu)助(zhu)密(mi)(mi)封(feng)元件能(neng)保(bao)證(zheng)靜(jing)環(huan)與(yu)壓(ya)蓋之間(jian)的(de)(de)(de)(de)密(mi)(mi)封(feng)性(xing)和靜(jing)環(huan)有一(yi)定的(de)(de)(de)(de)浮(fu)動(dong)(dong)(dong)性(xing),動(dong)(dong)(dong)環(huan)的(de)(de)(de)(de)輔(fu)助(zhu)密(mi)(mi)封(feng)元件能(neng)保(bao)證(zheng)動(dong)(dong)(dong)環(huan)與(yu)軸(zhou)(zhou)與(yu)軸(zhou)(zhou)套之間(jian)的(de)(de)(de)(de)密(mi)(mi)封(feng)性(xing)和動(dong)(dong)(dong)環(huan)的(de)(de)(de)(de)浮(fu)動(dong)(dong)(dong)性(xing),材(cai)(cai)料(liao)要(yao)求(qiu)(qiu)耐(nai)熱或耐(nai)寒并(bing)能(neng)與(yu)介質相容。起到(dao)將(jiang)軸(zhou)(zhou)的(de)(de)(de)(de)轉矩傳(chuan)(chuan)(chuan)(chuan)給動(dong)(dong)(dong)環(huan)的(de)(de)(de)(de)作(zuo)用,中間(jian)傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)的(de)(de)(de)(de)傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)銷、壓(ya)環(huan)—傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)環(huan)、傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)銷—彈簧座均起傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)作(zuo)用,材(cai)(cai)料(liao)要(yao)求(qiu)(qiu)耐(nai)磨和耐(nai)腐(fu)蝕。
緊固件(jian)要(yao)(yao)起(qi)到靜、動環(huan)的(de)定位、緊固和盛裝(zhuang)的(de)作用,要(yao)(yao)求(qiu)定位正(zheng)確(que),保(bao)證摩擦副密(mi)(mi)封面處于正(zheng)確(que)的(de)位置并保(bao)持良好貼(tie)合(he)的(de)彈簧比壓。同時要(yao)(yao)求(qiu)拆裝(zhuang)方便、容易就位、能重(zhong)復利用。與(yu)輔助(zhu)密(mi)(mi)封配合(he)處,注意安裝(zhuang)密(mi)(mi)封環(huan)的(de)導(dao)向側角和壓彈量。特(te)別應注意動環(huan)輔助(zhu)密(mi)(mi)封件(jian)與(yu)軸套配合(he)處要(yao)(yao)求(qiu)耐腐蝕和耐磨損,必(bi)要(yao)(yao)時采(cai)用硬面復層。
熱(re)水泵集式密封一(yi)般配上平衡(heng)循(xun)環系統,可(ke)使用(yong)(yong)在(zai)易燃(ran)、易爆、有(you)毒及腐蝕、高(gao)真空等對密封要求更(geng)為(wei)嚴格(ge)的場合。密封結(jie)構(gou)為(wei)外沖(chong)洗(xi)結(jie)構(gou),沖(chong)洗(xi)液可(ke)以為(wei)清潔的水也可(ke)為(wei)工業回用(yong)(yong)水,密封腔壓(ya)力高(gao)于沖(chong)洗(xi)液的壓(ya)力,沖(chong)洗(xi)液在(zai)輔助(zhu)套的上端輸(shu)入,在(zai)輔助(zhu)套的下端輸(shu)出,循(xun)環使用(yong)(yong),密封起到冷卻沖(chong)洗(xi)的作用(yong)(yong),其輔助(zhu)裝置有(you)調溫(wen)器、平衡(heng)罐、強制循(xun)環平衡(heng)系統等。