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聯系客服,馬上詢價
發布(bu)時間:2021-12-17 11:55:16 人(ren)氣:94719 來源:
熱水泵集式密(mi)封(feng)的大多數主要特性是其控制密(mi)封(feng)功能、摩(mo)擦力、磨損(sun)和壽命的自動界面(mian)潤滑機理。一切取(qu)決于(yu)(yu)(yu)穿過界面(mian)并建(jian)立潤滑膜的液(ye)體(ti)以便(bian)密(mi)封(feng)在實際無(wu)接(jie)觸(chu),通(tong)常是混合磨擦,介(jie)于(yu)(yu)(yu)干(gan)摩(mo)擦和完整液(ye)膜之間的潤滑摩(mo)擦狀態(tai)下(xia)(xia)運(yun)行。在腔體(ti)壓力作用下(xia)(xia)介(jie)質(zhi)穿過密(mi)封(feng)摩(mo)擦副端面(mian),表面(mian)張力和離心力在此(ci)時影響不大,流(liu)體(ti)壓力持續下(xia)(xia)降(jiang)直到它達到外部背壓,此(ci)壓力作用類(lei)似于(yu)(yu)(yu)流(liu)體(ti)靜(jing)壓時軸承(cheng)的承(cheng)載功能。這取(qu)決于(yu)(yu)(yu)介(jie)質(zhi)粘度、轉速(su)和端面(mian)間隙變化。
熱水泵(beng)集(ji)式(shi)密封要(yao)起(qi)(qi)到(dao)靜環(huan)(huan)(huan)和(he)動(dong)(dong)環(huan)(huan)(huan)的密封作用(yong)(yong),同時也起(qi)(qi)到(dao)浮(fu)動(dong)(dong)緩(huan)沖作用(yong)(yong),要(yao)求靜環(huan)(huan)(huan)的輔(fu)助密封元件(jian)能保(bao)證靜環(huan)(huan)(huan)與壓(ya)蓋之間(jian)的密封性(xing)(xing)和(he)靜環(huan)(huan)(huan)有一定的浮(fu)動(dong)(dong)性(xing)(xing),動(dong)(dong)環(huan)(huan)(huan)的輔(fu)助密封元件(jian)能保(bao)證動(dong)(dong)環(huan)(huan)(huan)與軸與軸套之間(jian)的密封性(xing)(xing)和(he)動(dong)(dong)環(huan)(huan)(huan)的浮(fu)動(dong)(dong)性(xing)(xing),材料要(yao)求耐(nai)熱或(huo)耐(nai)寒并(bing)能與介(jie)質相容。起(qi)(qi)到(dao)將(jiang)軸的轉矩傳(chuan)給動(dong)(dong)環(huan)(huan)(huan)的作用(yong)(yong),中間(jian)傳(chuan)動(dong)(dong)的傳(chuan)動(dong)(dong)銷、壓(ya)環(huan)(huan)(huan)—傳(chuan)動(dong)(dong)環(huan)(huan)(huan)、傳(chuan)動(dong)(dong)銷—彈簧座均(jun)起(qi)(qi)傳(chuan)動(dong)(dong)作用(yong)(yong),材料要(yao)求耐(nai)磨和(he)耐(nai)腐蝕(shi)。
緊(jin)固(gu)(gu)件要起到靜、動環(huan)的定位(wei)(wei)、緊(jin)固(gu)(gu)和(he)盛(sheng)裝的作用,要求(qiu)(qiu)定位(wei)(wei)正(zheng)確(que),保(bao)證摩擦(ca)副密封面(mian)(mian)處(chu)于正(zheng)確(que)的位(wei)(wei)置并保(bao)持良好貼合(he)(he)的彈簧比壓(ya)。同時要求(qiu)(qiu)拆裝方便、容易(yi)就位(wei)(wei)、能重復利用。與輔(fu)助密封配(pei)(pei)合(he)(he)處(chu),注意安(an)裝密封環(huan)的導(dao)向側角和(he)壓(ya)彈量(liang)。特(te)別(bie)應注意動環(huan)輔(fu)助密封件與軸套配(pei)(pei)合(he)(he)處(chu)要求(qiu)(qiu)耐(nai)(nai)腐(fu)蝕和(he)耐(nai)(nai)磨損,必要時采(cai)用硬(ying)面(mian)(mian)復層。
熱水(shui)泵(beng)集式密(mi)封(feng)(feng)一般配上平衡循(xun)環(huan)(huan)系(xi)統,可使用在(zai)(zai)易燃、易爆、有毒及(ji)腐蝕、高(gao)真空(kong)等對密(mi)封(feng)(feng)要(yao)求更為嚴格(ge)的(de)(de)場(chang)合。密(mi)封(feng)(feng)結(jie)構為外(wai)沖(chong)(chong)洗(xi)結(jie)構,沖(chong)(chong)洗(xi)液(ye)可以(yi)為清潔的(de)(de)水(shui)也可為工業回用水(shui),密(mi)封(feng)(feng)腔壓力高(gao)于沖(chong)(chong)洗(xi)液(ye)的(de)(de)壓力,沖(chong)(chong)洗(xi)液(ye)在(zai)(zai)輔助套的(de)(de)上端輸(shu)入,在(zai)(zai)輔助套的(de)(de)下端輸(shu)出,循(xun)環(huan)(huan)使用,密(mi)封(feng)(feng)起到冷卻沖(chong)(chong)洗(xi)的(de)(de)作(zuo)用,其輔助裝置有調溫器、平衡罐、強(qiang)制(zhi)循(xun)環(huan)(huan)平衡系(xi)統等。