反壓狀態是不良的工作狀態，介質中的顆粒、雜質很容易進入密封面，使密封失效。磨軸的主要件為橡膠波紋管，且由于上端密封面處于不良潤滑狀態，動靜環之間的摩擦力矩大于橡膠波紋管與軸之間的傳遞轉矩，從而發生相對轉動。動、靜環輔助密封由于受到污水中的弱酸、弱堿的腐蝕，橡膠件已無彈性。渣漿泵用岢嵐機械密封的工作原理要求岢嵐機械密封內部無任何雜質，在組裝岢嵐機械密封前要徹底清掃動環、靜環、軸套等部件，檢查動靜環表面是否存在劃痕、裂紋等缺陷，這些缺陷存在會造成岢嵐機械密封嚴重漏(lou)泄。必要時可以(yi)制作工裝在(zai)組裝前水(shui)壓試驗，檢查動靜環座(zuo)是否存(cun)在(zai)影(ying)響密封的缺陷。

　　渣漿岢嵐泵用岢嵐機械密封由于密封面變形所引起的，而且岢嵐機械密封面泄漏的概率是很高的。如果泵在啟動時就發生岢嵐泵用岢嵐機械密封泄漏，而拆查密封面時看不見有損壞的地方，這時就應該用平晶檢查岢嵐機械密封的變(bian)形情(qing)況(kuang)。如(ru)果發生(sheng)變(bian)形，用平(ping)晶檢(jian)查密(mi)封(feng)面的干涉帶的變(bian)化情(qing)況(kuang)，密(mi)封(feng)面變(bian)形存(cun)在于動環和(he)靜環之間(jian)。

　　壓缸(gang)體(ti)動(dong)(dong)(dong)態密(mi)封(feng)(feng)(feng)系統(tong)采用(yong)(yong)(yong)的(de)是主(zhu)密(mi)封(feng)(feng)(feng)設計(ji)，一(yi)(yi)般都用(yong)(yong)(yong)U型(xing)密(mi)封(feng)(feng)(feng)圈。液壓缸(gang)體(ti)的(de)往復(fu)式(shi)動(dong)(dong)(dong)態密(mi)封(feng)(feng)(feng)系統(tong)的(de)設計(ji)，開始(shi)使(shi)用(yong)(yong)(yong)了更加復(fu)雜的(de)U型(xing)圈和(he)同軸(zhou)密(mi)封(feng)(feng)(feng)組件的(de)復(fu)合(he)(he)式(shi)設計(ji)。密(mi)封(feng)(feng)(feng)的(de)靜(jing)(jing)環(huan)(huan)(huan)(huan)通(tong)常(chang)(chang)固定(ding)在(zai)(zai)殼(ke)體(ti)上，動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)通(tong)過彈簧(huang)(huang)、彈簧(huang)(huang)座與軸(zhou)一(yi)(yi)同旋轉。靜(jing)(jing)環(huan)(huan)(huan)(huan)與殼(ke)體(ti)、動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)與軸(zhou)形成的(de)間(jian)隙用(yong)(yong)(yong)成型(xing)填(tian)料密(mi)封(feng)(feng)(feng)。在(zai)(zai)動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)和(he)靜(jing)(jing)環(huan)(huan)(huan)(huan)接觸(chu)的(de)端面形成相對滑(hua)動(dong)(dong)(dong)面，即動(dong)(dong)(dong)密(mi)封(feng)(feng)(feng)面。為保(bao)證密(mi)封(feng)(feng)(feng)良好(hao)(hao)，動(dong)(dong)(dong)密(mi)封(feng)(feng)(feng)面應十(shi)分平(ping)直和(he)光(guang)潔(jie)。彈簧(huang)(huang)力(li)和(he)被(bei)密(mi)封(feng)(feng)(feng)的(de)流體(ti)壓力(li)使(shi)動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)貼緊靜(jing)(jing)環(huan)(huan)(huan)(huan)。因動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)與軸(zhou)通(tong)過彈簧(huang)(huang)連接，動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)和(he)靜(jing)(jing)環(huan)(huan)(huan)(huan)間(jian)貼合(he)(he)性受軸(zhou)的(de)振(zhen)動(dong)(dong)(dong)和(he)擺動(dong)(dong)(dong)影響較小。靜(jing)(jing)環(huan)(huan)(huan)(huan)一(yi)(yi)般常(chang)(chang)用(yong)(yong)(yong)潤滑(hua)性好(hao)(hao)的(de)軟(ruan)質材(cai)料如(ru)石墨、填(tian)充聚四氟乙(yi)烯等(deng)，動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)多(duo)用(yong)(yong)(yong)硬質合(he)(he)金、陶瓷等(deng)材(cai)料制(zhi)造。