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聯系客服,馬上詢價
發(fa)布時間(jian):2021-12-17 11:55:16 人氣:97995 來(lai)源:
熱水泵集(ji)式密封(feng)的(de)大多數主要特性(xing)是(shi)其(qi)控制密封(feng)功能(neng)、摩擦(ca)力(li)(li)(li)(li)、磨損(sun)和壽命的(de)自動界面(mian)潤(run)滑機理。一(yi)切取決于(yu)穿(chuan)過界面(mian)并建立潤(run)滑膜的(de)液體以便密封(feng)在實際(ji)無接觸,通常(chang)是(shi)混合(he)磨擦(ca),介(jie)于(yu)干摩擦(ca)和完(wan)整液膜之間的(de)潤(run)滑摩擦(ca)狀態下運行(xing)。在腔體壓(ya)力(li)(li)(li)(li)作(zuo)用(yong)下介(jie)質(zhi)穿(chuan)過密封(feng)摩擦(ca)副端面(mian),表面(mian)張力(li)(li)(li)(li)和離(li)心力(li)(li)(li)(li)在此(ci)時影(ying)響不大,流(liu)體壓(ya)力(li)(li)(li)(li)持續(xu)下降直到它達到外部背壓(ya),此(ci)壓(ya)力(li)(li)(li)(li)作(zuo)用(yong)類似于(yu)流(liu)體靜(jing)壓(ya)時軸(zhou)承(cheng)的(de)承(cheng)載功能(neng)。這取決于(yu)介(jie)質(zhi)粘度、轉(zhuan)速和端面(mian)間隙變化(hua)。
熱(re)水泵(beng)集式密封(feng)(feng)要(yao)起(qi)到(dao)靜環(huan)(huan)(huan)和(he)動(dong)(dong)環(huan)(huan)(huan)的(de)(de)密封(feng)(feng)作用(yong)(yong),同(tong)時也(ye)起(qi)到(dao)浮動(dong)(dong)緩(huan)沖(chong)作用(yong)(yong),要(yao)求靜環(huan)(huan)(huan)的(de)(de)輔助密封(feng)(feng)元(yuan)件能保證靜環(huan)(huan)(huan)與(yu)壓蓋之間的(de)(de)密封(feng)(feng)性和(he)靜環(huan)(huan)(huan)有一定(ding)的(de)(de)浮動(dong)(dong)性,動(dong)(dong)環(huan)(huan)(huan)的(de)(de)輔助密封(feng)(feng)元(yuan)件能保證動(dong)(dong)環(huan)(huan)(huan)與(yu)軸與(yu)軸套之間的(de)(de)密封(feng)(feng)性和(he)動(dong)(dong)環(huan)(huan)(huan)的(de)(de)浮動(dong)(dong)性,材料要(yao)求耐(nai)(nai)熱(re)或耐(nai)(nai)寒并能與(yu)介(jie)質(zhi)相容。起(qi)到(dao)將軸的(de)(de)轉矩(ju)傳給動(dong)(dong)環(huan)(huan)(huan)的(de)(de)作用(yong)(yong),中(zhong)間傳動(dong)(dong)的(de)(de)傳動(dong)(dong)銷(xiao)、壓環(huan)(huan)(huan)—傳動(dong)(dong)環(huan)(huan)(huan)、傳動(dong)(dong)銷(xiao)—彈(dan)簧座均起(qi)傳動(dong)(dong)作用(yong)(yong),材料要(yao)求耐(nai)(nai)磨和(he)耐(nai)(nai)腐蝕。
緊(jin)固件(jian)(jian)要(yao)(yao)起到靜、動(dong)環(huan)的定位、緊(jin)固和盛裝(zhuang)的作用(yong),要(yao)(yao)求定位正(zheng)確(que),保證摩擦副密(mi)封(feng)面處(chu)于(yu)正(zheng)確(que)的位置并保持(chi)良好貼(tie)合的彈簧比壓。同(tong)時要(yao)(yao)求拆裝(zhuang)方便、容易就位、能重復利用(yong)。與輔(fu)助密(mi)封(feng)配(pei)合處(chu),注意安(an)裝(zhuang)密(mi)封(feng)環(huan)的導向側角和壓彈量(liang)。特別應注意動(dong)環(huan)輔(fu)助密(mi)封(feng)件(jian)(jian)與軸套(tao)配(pei)合處(chu)要(yao)(yao)求耐腐蝕和耐磨損,必要(yao)(yao)時采用(yong)硬面復層。
熱水泵集式密(mi)封一般配上平(ping)(ping)衡(heng)循環(huan)(huan)系統,可(ke)使(shi)用在易燃(ran)、易爆、有毒(du)及腐蝕、高真空(kong)等(deng)對密(mi)封要(yao)求更為(wei)嚴格的(de)場(chang)合。密(mi)封結構(gou)為(wei)外沖(chong)(chong)洗(xi)結構(gou),沖(chong)(chong)洗(xi)液(ye)可(ke)以為(wei)清潔(jie)的(de)水也(ye)可(ke)為(wei)工業回用水,密(mi)封腔壓力高于沖(chong)(chong)洗(xi)液(ye)的(de)壓力,沖(chong)(chong)洗(xi)液(ye)在輔助套的(de)上端輸入(ru),在輔助套的(de)下端輸出,循環(huan)(huan)使(shi)用,密(mi)封起到冷卻沖(chong)(chong)洗(xi)的(de)作(zuo)用,其輔助裝(zhuang)置有調溫器、平(ping)(ping)衡(heng)罐、強制循環(huan)(huan)平(ping)(ping)衡(heng)系統等(deng)。