熱水(shui)泵集式(shi)密(mi)封(feng)的(de)(de)大多數主要特性是其(qi)控制(zhi)密(mi)封(feng)功能(neng)、摩擦(ca)(ca)力(li)(li)、磨損和壽命的(de)(de)自動(dong)界(jie)面(mian)潤(run)滑(hua)機(ji)理。一切取決(jue)于穿過界(jie)面(mian)并建立(li)潤(run)滑(hua)膜(mo)(mo)的(de)(de)液(ye)體以便密(mi)封(feng)在實際無接觸，通常是混(hun)合(he)磨擦(ca)(ca)，介于干(gan)摩擦(ca)(ca)和完整液(ye)膜(mo)(mo)之間的(de)(de)潤(run)滑(hua)摩擦(ca)(ca)狀態(tai)下(xia)運行。在腔體壓(ya)(ya)(ya)(ya)力(li)(li)作用下(xia)介質(zhi)穿過密(mi)封(feng)摩擦(ca)(ca)副端面(mian)，表面(mian)張力(li)(li)和離心力(li)(li)在此時(shi)影響(xiang)不大，流體壓(ya)(ya)(ya)(ya)力(li)(li)持續(xu)下(xia)降直到它達(da)到外部背壓(ya)(ya)(ya)(ya)，此壓(ya)(ya)(ya)(ya)力(li)(li)作用類似于流體靜(jing)壓(ya)(ya)(ya)(ya)時(shi)軸承的(de)(de)承載功能(neng)。這取決(jue)于介質(zhi)粘度、轉速和端面(mian)間隙變(bian)化(hua)。

　　熱(re)(re)水(shui)泵(beng)集式密(mi)(mi)封(feng)要起(qi)到(dao)靜(jing)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)和動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)的(de)(de)(de)(de)密(mi)(mi)封(feng)作(zuo)用(yong)(yong)，同時也起(qi)到(dao)浮(fu)動(dong)(dong)(dong)(dong)緩沖作(zuo)用(yong)(yong)，要求(qiu)靜(jing)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)的(de)(de)(de)(de)輔(fu)助(zhu)密(mi)(mi)封(feng)元件能保證(zheng)靜(jing)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)與壓(ya)蓋之間(jian)(jian)的(de)(de)(de)(de)密(mi)(mi)封(feng)性(xing)(xing)和靜(jing)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)有一(yi)定的(de)(de)(de)(de)浮(fu)動(dong)(dong)(dong)(dong)性(xing)(xing)，動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)的(de)(de)(de)(de)輔(fu)助(zhu)密(mi)(mi)封(feng)元件能保證(zheng)動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)與軸(zhou)與軸(zhou)套之間(jian)(jian)的(de)(de)(de)(de)密(mi)(mi)封(feng)性(xing)(xing)和動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)的(de)(de)(de)(de)浮(fu)動(dong)(dong)(dong)(dong)性(xing)(xing)，材料要求(qiu)耐(nai)熱(re)(re)或耐(nai)寒(han)并能與介質相容。起(qi)到(dao)將軸(zhou)的(de)(de)(de)(de)轉矩傳(chuan)(chuan)(chuan)給動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)的(de)(de)(de)(de)作(zuo)用(yong)(yong)，中(zhong)間(jian)(jian)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)的(de)(de)(de)(de)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)銷、壓(ya)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)—傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)、傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)銷—彈簧座均起(qi)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)作(zuo)用(yong)(yong)，材料要求(qiu)耐(nai)磨(mo)和耐(nai)腐(fu)蝕。

　　緊固件(jian)要(yao)(yao)起到靜、動環的定位(wei)、緊固和(he)盛裝(zhuang)的作用(yong)，要(yao)(yao)求定位(wei)正確，保(bao)(bao)證摩擦(ca)副密(mi)封(feng)(feng)面處于(yu)正確的位(wei)置并保(bao)(bao)持良好(hao)貼合的彈(dan)簧比壓。同時要(yao)(yao)求拆(chai)裝(zhuang)方(fang)便(bian)、容(rong)易(yi)就位(wei)、能(neng)重復利(li)用(yong)。與輔助密(mi)封(feng)(feng)配合處，注意安裝(zhuang)密(mi)封(feng)(feng)環的導向側角和(he)壓彈(dan)量。特別應注意動環輔助密(mi)封(feng)(feng)件(jian)與軸套配合處要(yao)(yao)求耐(nai)腐(fu)蝕和(he)耐(nai)磨(mo)損，必要(yao)(yao)時采用(yong)硬面復層。

　　熱水泵集式密(mi)(mi)(mi)封(feng)一般配上(shang)(shang)平(ping)衡(heng)循環系統，可使(shi)用(yong)在(zai)易燃、易爆(bao)、有(you)毒及腐蝕、高真空(kong)等(deng)對密(mi)(mi)(mi)封(feng)要求更(geng)為嚴格的場(chang)合。密(mi)(mi)(mi)封(feng)結構為外(wai)沖洗(xi)(xi)(xi)結構，沖洗(xi)(xi)(xi)液可以為清潔的水也可為工(gong)業回用(yong)水，密(mi)(mi)(mi)封(feng)腔壓力(li)高于沖洗(xi)(xi)(xi)液的壓力(li)，沖洗(xi)(xi)(xi)液在(zai)輔(fu)助(zhu)(zhu)套的上(shang)(shang)端輸(shu)入，在(zai)輔(fu)助(zhu)(zhu)套的下端輸(shu)出,循環使(shi)用(yong),密(mi)(mi)(mi)封(feng)起(qi)到冷(leng)卻沖洗(xi)(xi)(xi)的作用(yong)，其輔(fu)助(zhu)(zhu)裝置有(you)調溫器(qi)、平(ping)衡(heng)罐、強制循環平(ping)衡(heng)系統等(deng)。