掃一掃,加微信
聯系客服,馬上詢價
發布時間:2021-12-17 11:55:16 人氣:94817 來(lai)源:
熱(re)水(shui)泵集式(shi)密封(feng)(feng)的(de)大多數主要特性是其控制密封(feng)(feng)功能、摩(mo)(mo)(mo)擦(ca)力、磨(mo)損和壽命的(de)自動界面(mian)(mian)潤(run)滑機理。一(yi)切取(qu)決于(yu)穿過(guo)界面(mian)(mian)并建立(li)潤(run)滑膜的(de)液體(ti)以便密封(feng)(feng)在實際無接觸,通(tong)常(chang)是混合磨(mo)擦(ca),介于(yu)干(gan)摩(mo)(mo)(mo)擦(ca)和完整液膜之間(jian)的(de)潤(run)滑摩(mo)(mo)(mo)擦(ca)狀態下(xia)運行。在腔體(ti)壓(ya)力作(zuo)(zuo)用下(xia)介質(zhi)穿過(guo)密封(feng)(feng)摩(mo)(mo)(mo)擦(ca)副端(duan)(duan)面(mian)(mian),表面(mian)(mian)張力和離心力在此時影響(xiang)不大,流體(ti)壓(ya)力持續下(xia)降直到它達到外部(bu)背壓(ya),此壓(ya)力作(zuo)(zuo)用類似于(yu)流體(ti)靜壓(ya)時軸(zhou)承(cheng)(cheng)的(de)承(cheng)(cheng)載功能。這取(qu)決于(yu)介質(zhi)粘度(du)、轉(zhuan)速和端(duan)(duan)面(mian)(mian)間(jian)隙變化。
熱水泵集式密封(feng)要(yao)起到(dao)靜環(huan)(huan)和(he)(he)動(dong)(dong)(dong)環(huan)(huan)的密封(feng)作(zuo)用,同(tong)時也起到(dao)浮動(dong)(dong)(dong)緩沖作(zuo)用,要(yao)求靜環(huan)(huan)的輔(fu)助密封(feng)元(yuan)件(jian)(jian)能保(bao)證靜環(huan)(huan)與(yu)壓蓋之間(jian)(jian)的密封(feng)性(xing)和(he)(he)靜環(huan)(huan)有一定(ding)的浮動(dong)(dong)(dong)性(xing),動(dong)(dong)(dong)環(huan)(huan)的輔(fu)助密封(feng)元(yuan)件(jian)(jian)能保(bao)證動(dong)(dong)(dong)環(huan)(huan)與(yu)軸與(yu)軸套(tao)之間(jian)(jian)的密封(feng)性(xing)和(he)(he)動(dong)(dong)(dong)環(huan)(huan)的浮動(dong)(dong)(dong)性(xing),材料(liao)要(yao)求耐(nai)熱或耐(nai)寒并能與(yu)介質相容。起到(dao)將(jiang)軸的轉矩傳給動(dong)(dong)(dong)環(huan)(huan)的作(zuo)用,中間(jian)(jian)傳動(dong)(dong)(dong)的傳動(dong)(dong)(dong)銷、壓環(huan)(huan)—傳動(dong)(dong)(dong)環(huan)(huan)、傳動(dong)(dong)(dong)銷—彈簧座(zuo)均起傳動(dong)(dong)(dong)作(zuo)用,材料(liao)要(yao)求耐(nai)磨和(he)(he)耐(nai)腐蝕。
緊固(gu)件(jian)要(yao)起到靜(jing)、動(dong)環的(de)(de)定位、緊固(gu)和(he)盛(sheng)裝(zhuang)的(de)(de)作用(yong)(yong),要(yao)求定位正(zheng)確,保證摩擦副密(mi)(mi)(mi)封(feng)面(mian)處于正(zheng)確的(de)(de)位置并保持良(liang)好貼合的(de)(de)彈簧(huang)比壓。同(tong)時要(yao)求拆裝(zhuang)方便、容易就位、能重復利用(yong)(yong)。與(yu)(yu)輔(fu)助密(mi)(mi)(mi)封(feng)配(pei)合處,注(zhu)意安裝(zhuang)密(mi)(mi)(mi)封(feng)環的(de)(de)導向(xiang)側角和(he)壓彈量。特別(bie)應注(zhu)意動(dong)環輔(fu)助密(mi)(mi)(mi)封(feng)件(jian)與(yu)(yu)軸(zhou)套配(pei)合處要(yao)求耐腐蝕和(he)耐磨損,必要(yao)時采用(yong)(yong)硬面(mian)復層。
熱水(shui)泵集式(shi)密(mi)(mi)封一般配(pei)上平(ping)衡(heng)(heng)循(xun)環系統,可(ke)使用在(zai)易燃(ran)、易爆、有(you)毒及腐蝕、高真空等對密(mi)(mi)封要(yao)求更為(wei)嚴(yan)格的(de)場(chang)合。密(mi)(mi)封結構為(wei)外沖洗結構,沖洗液可(ke)以為(wei)清(qing)潔的(de)水(shui)也可(ke)為(wei)工業回用水(shui),密(mi)(mi)封腔壓力高于沖洗液的(de)壓力,沖洗液在(zai)輔助套的(de)上端輸入,在(zai)輔助套的(de)下端輸出,循(xun)環使用,密(mi)(mi)封起到冷卻沖洗的(de)作用,其輔助裝置有(you)調溫(wen)器(qi)、平(ping)衡(heng)(heng)罐、強制(zhi)循(xun)環平(ping)衡(heng)(heng)系統等。