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聯系客服,馬上詢價
發布時間:2021-12-17 11:55:16 人氣(qi):98847 來(lai)源:
熱(re)水泵集(ji)式密封的(de)大(da)多數主要(yao)特性(xing)是(shi)其(qi)控制密封功(gong)能、摩(mo)(mo)擦(ca)(ca)力、磨損和(he)壽命的(de)自動(dong)界面(mian)潤(run)(run)滑(hua)機理。一切取(qu)決(jue)于(yu)穿過界面(mian)并建(jian)立潤(run)(run)滑(hua)膜的(de)液(ye)體以便(bian)密封在實際無接觸,通常(chang)是(shi)混合磨擦(ca)(ca),介(jie)于(yu)干摩(mo)(mo)擦(ca)(ca)和(he)完整液(ye)膜之間的(de)潤(run)(run)滑(hua)摩(mo)(mo)擦(ca)(ca)狀態(tai)下運(yun)行。在腔體壓(ya)(ya)力作(zuo)用下介(jie)質穿過密封摩(mo)(mo)擦(ca)(ca)副(fu)端面(mian),表面(mian)張力和(he)離心力在此時影響不大(da),流體壓(ya)(ya)力持續(xu)下降直到它達到外(wai)部背壓(ya)(ya),此壓(ya)(ya)力作(zuo)用類(lei)似于(yu)流體靜壓(ya)(ya)時軸承的(de)承載功(gong)能。這(zhe)取(qu)決(jue)于(yu)介(jie)質粘度(du)、轉速(su)和(he)端面(mian)間隙變化。
熱水泵集式密(mi)封要起(qi)到(dao)靜(jing)環(huan)(huan)(huan)(huan)(huan)和(he)動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)的密(mi)封作(zuo)(zuo)用(yong),同(tong)時也起(qi)到(dao)浮動(dong)(dong)緩(huan)沖(chong)作(zuo)(zuo)用(yong),要求靜(jing)環(huan)(huan)(huan)(huan)(huan)的輔(fu)助(zhu)密(mi)封元(yuan)件能(neng)保證(zheng)靜(jing)環(huan)(huan)(huan)(huan)(huan)與(yu)(yu)壓(ya)蓋之間(jian)的密(mi)封性和(he)靜(jing)環(huan)(huan)(huan)(huan)(huan)有一(yi)定的浮動(dong)(dong)性,動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)的輔(fu)助(zhu)密(mi)封元(yuan)件能(neng)保證(zheng)動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)與(yu)(yu)軸(zhou)與(yu)(yu)軸(zhou)套之間(jian)的密(mi)封性和(he)動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)的浮動(dong)(dong)性,材料要求耐(nai)熱或耐(nai)寒并能(neng)與(yu)(yu)介質相容。起(qi)到(dao)將(jiang)軸(zhou)的轉矩傳(chuan)(chuan)(chuan)給動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)的作(zuo)(zuo)用(yong),中間(jian)傳(chuan)(chuan)(chuan)動(dong)(dong)的傳(chuan)(chuan)(chuan)動(dong)(dong)銷(xiao)(xiao)、壓(ya)環(huan)(huan)(huan)(huan)(huan)—傳(chuan)(chuan)(chuan)動(dong)(dong)環(huan)(huan)(huan)(huan)(huan)、傳(chuan)(chuan)(chuan)動(dong)(dong)銷(xiao)(xiao)—彈簧(huang)座均(jun)起(qi)傳(chuan)(chuan)(chuan)動(dong)(dong)作(zuo)(zuo)用(yong),材料要求耐(nai)磨和(he)耐(nai)腐(fu)蝕。
緊固件要(yao)(yao)起到靜、動(dong)環(huan)(huan)的(de)(de)定位、緊固和盛裝(zhuang)的(de)(de)作用,要(yao)(yao)求定位正(zheng)確(que)(que),保證摩擦(ca)副(fu)密封(feng)面處(chu)于正(zheng)確(que)(que)的(de)(de)位置(zhi)并保持良好貼(tie)合的(de)(de)彈簧比壓。同時(shi)(shi)要(yao)(yao)求拆裝(zhuang)方(fang)便、容易(yi)就位、能重復利用。與輔助密封(feng)配(pei)合處(chu),注意安裝(zhuang)密封(feng)環(huan)(huan)的(de)(de)導向側角和壓彈量。特別應(ying)注意動(dong)環(huan)(huan)輔助密封(feng)件與軸套(tao)配(pei)合處(chu)要(yao)(yao)求耐腐(fu)蝕和耐磨損,必要(yao)(yao)時(shi)(shi)采用硬面復層。
熱水泵集(ji)式密(mi)封一般配上(shang)平(ping)(ping)衡(heng)循(xun)環(huan)系(xi)統,可使(shi)用(yong)在易燃、易爆、有(you)毒及腐蝕、高真空等對密(mi)封要求更(geng)為嚴格的(de)(de)(de)場合。密(mi)封結構為外沖(chong)洗(xi)結構,沖(chong)洗(xi)液(ye)(ye)可以(yi)為清(qing)潔(jie)的(de)(de)(de)水也可為工業回用(yong)水,密(mi)封腔壓力高于沖(chong)洗(xi)液(ye)(ye)的(de)(de)(de)壓力,沖(chong)洗(xi)液(ye)(ye)在輔助套(tao)的(de)(de)(de)上(shang)端(duan)(duan)輸入,在輔助套(tao)的(de)(de)(de)下端(duan)(duan)輸出,循(xun)環(huan)使(shi)用(yong),密(mi)封起到冷卻(que)沖(chong)洗(xi)的(de)(de)(de)作用(yong),其(qi)輔助裝(zhuang)置有(you)調溫器、平(ping)(ping)衡(heng)罐、強制循(xun)環(huan)平(ping)(ping)衡(heng)系(xi)統等。