熱水泵集式密封(feng)的(de)大多數主要特性是(shi)其控(kong)制密封(feng)功能(neng)、摩(mo)擦(ca)力(li)、磨損和壽命(ming)的(de)自動界面(mian)潤滑機理。一切取決于(yu)穿(chuan)(chuan)過界面(mian)并建立潤滑膜的(de)液體(ti)(ti)以便(bian)密封(feng)在實際(ji)無接觸，通常是(shi)混合磨擦(ca)，介于(yu)干摩(mo)擦(ca)和完整液膜之間的(de)潤滑摩(mo)擦(ca)狀態下(xia)運行。在腔(qiang)體(ti)(ti)壓(ya)力(li)作(zuo)用下(xia)介質(zhi)穿(chuan)(chuan)過密封(feng)摩(mo)擦(ca)副端面(mian)，表面(mian)張力(li)和離心(xin)力(li)在此時(shi)影(ying)響不大，流(liu)體(ti)(ti)壓(ya)力(li)持(chi)續下(xia)降直到(dao)它達(da)到(dao)外部背壓(ya)，此壓(ya)力(li)作(zuo)用類似于(yu)流(liu)體(ti)(ti)靜壓(ya)時(shi)軸承(cheng)的(de)承(cheng)載功能(neng)。這取決于(yu)介質(zhi)粘度、轉速和端面(mian)間隙變化。

　　熱(re)水泵集式密(mi)封(feng)(feng)要(yao)(yao)起到靜環(huan)(huan)和(he)動(dong)(dong)(dong)(dong)環(huan)(huan)的(de)(de)(de)(de)密(mi)封(feng)(feng)作(zuo)用，同時也起到浮(fu)動(dong)(dong)(dong)(dong)緩(huan)沖作(zuo)用，要(yao)(yao)求(qiu)靜環(huan)(huan)的(de)(de)(de)(de)輔助密(mi)封(feng)(feng)元件(jian)能(neng)保證靜環(huan)(huan)與(yu)壓(ya)(ya)蓋之間(jian)(jian)的(de)(de)(de)(de)密(mi)封(feng)(feng)性(xing)(xing)和(he)靜環(huan)(huan)有(you)一定的(de)(de)(de)(de)浮(fu)動(dong)(dong)(dong)(dong)性(xing)(xing)，動(dong)(dong)(dong)(dong)環(huan)(huan)的(de)(de)(de)(de)輔助密(mi)封(feng)(feng)元件(jian)能(neng)保證動(dong)(dong)(dong)(dong)環(huan)(huan)與(yu)軸(zhou)與(yu)軸(zhou)套之間(jian)(jian)的(de)(de)(de)(de)密(mi)封(feng)(feng)性(xing)(xing)和(he)動(dong)(dong)(dong)(dong)環(huan)(huan)的(de)(de)(de)(de)浮(fu)動(dong)(dong)(dong)(dong)性(xing)(xing)，材(cai)料要(yao)(yao)求(qiu)耐(nai)(nai)熱(re)或耐(nai)(nai)寒并能(neng)與(yu)介質相容。起到將軸(zhou)的(de)(de)(de)(de)轉(zhuan)矩傳(chuan)(chuan)給動(dong)(dong)(dong)(dong)環(huan)(huan)的(de)(de)(de)(de)作(zuo)用，中間(jian)(jian)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)的(de)(de)(de)(de)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)銷(xiao)、壓(ya)(ya)環(huan)(huan)—傳(chuan)(chuan)動(dong)(dong)(dong)(dong)環(huan)(huan)、傳(chuan)(chuan)動(dong)(dong)(dong)(dong)銷(xiao)—彈簧座(zuo)均起傳(chuan)(chuan)動(dong)(dong)(dong)(dong)作(zuo)用，材(cai)料要(yao)(yao)求(qiu)耐(nai)(nai)磨和(he)耐(nai)(nai)腐蝕。

　　緊固(gu)件(jian)要(yao)起到靜、動環的定(ding)位(wei)、緊固(gu)和(he)盛裝(zhuang)的作用，要(yao)求定(ding)位(wei)正(zheng)確，保(bao)證摩擦副密封(feng)面(mian)處于正(zheng)確的位(wei)置(zhi)并(bing)保(bao)持良(liang)好貼合(he)(he)的彈簧比壓。同(tong)時要(yao)求拆裝(zhuang)方便、容(rong)易就位(wei)、能重復(fu)利用。與(yu)輔助密封(feng)配(pei)合(he)(he)處，注意(yi)安裝(zhuang)密封(feng)環的導向(xiang)側角和(he)壓彈量(liang)。特別應注意(yi)動環輔助密封(feng)件(jian)與(yu)軸(zhou)套配(pei)合(he)(he)處要(yao)求耐(nai)腐(fu)蝕和(he)耐(nai)磨損，必要(yao)時采用硬面(mian)復(fu)層。

　　熱水泵集式密(mi)封一般配上(shang)平(ping)衡循環(huan)系統，可(ke)使(shi)(shi)用(yong)(yong)在易燃、易爆、有毒(du)及腐蝕、高真空(kong)等對密(mi)封要求更為嚴格的場合。密(mi)封結構(gou)為外沖(chong)洗(xi)(xi)結構(gou)，沖(chong)洗(xi)(xi)液可(ke)以為清潔的水也可(ke)為工業回用(yong)(yong)水，密(mi)封腔壓力(li)高于(yu)沖(chong)洗(xi)(xi)液的壓力(li)，沖(chong)洗(xi)(xi)液在輔助(zhu)套(tao)的上(shang)端輸入，在輔助(zhu)套(tao)的下端輸出,循環(huan)使(shi)(shi)用(yong)(yong),密(mi)封起到(dao)冷(leng)卻沖(chong)洗(xi)(xi)的作用(yong)(yong)，其輔助(zhu)裝置有調溫(wen)器、平(ping)衡罐、強制循環(huan)平(ping)衡系統等。