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。渣漿托克遜泵用托克遜機械密封的工作原理要求托克遜機械密封內部無任何雜質，在組裝托克遜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托克遜機械密封嚴重漏(lou)泄。必要時可(ke)以制作(zuo)工(gong)裝(zhuang)在組裝(zhuang)前水壓(ya)試驗，檢查動(dong)靜環座是否存在影響密封(feng)的缺(que)陷。

　　渣漿托克遜泵用托克遜機械密封由于密封面變形所引起的，而且托克遜機械密封面泄漏的概率是很高的。如果泵在啟動時就發生托克遜泵用托克遜機械密封泄漏，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托克遜機械密封的(de)變形(xing)情況(kuang)。如果發(fa)生(sheng)變形(xing)，用平晶檢查密封面(mian)的(de)干涉帶的(de)變化情況(kuang)，密封面(mian)變形(xing)存(cun)在(zai)于動環(huan)和靜環(huan)之間。

　　壓(ya)缸體(ti)動(dong)(dong)(dong)(dong)態(tai)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)系統(tong)采用(yong)(yong)的(de)(de)(de)(de)是(shi)主密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)設計，一(yi)般(ban)都用(yong)(yong)U型(xing)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)圈。液壓(ya)缸體(ti)的(de)(de)(de)(de)往(wang)復式(shi)動(dong)(dong)(dong)(dong)態(tai)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)系統(tong)的(de)(de)(de)(de)設計，開(kai)始使用(yong)(yong)了更(geng)加復雜的(de)(de)(de)(de)U型(xing)圈和(he)(he)同(tong)軸(zhou)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)組件的(de)(de)(de)(de)復合(he)式(shi)設計。密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)的(de)(de)(de)(de)靜環(huan)通(tong)常固定(ding)在殼體(ti)上，動(dong)(dong)(dong)(dong)環(huan)通(tong)過(guo)彈(dan)簧(huang)(huang)、彈(dan)簧(huang)(huang)座與軸(zhou)一(yi)同(tong)旋轉。靜環(huan)與殼體(ti)、動(dong)(dong)(dong)(dong)環(huan)與軸(zhou)形成的(de)(de)(de)(de)間(jian)隙用(yong)(yong)成型(xing)填料(liao)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)。在動(dong)(dong)(dong)(dong)環(huan)和(he)(he)靜環(huan)接觸(chu)的(de)(de)(de)(de)端面(mian)(mian)形成相對滑(hua)動(dong)(dong)(dong)(dong)面(mian)(mian)，即動(dong)(dong)(dong)(dong)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)。為保(bao)證密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)良好(hao)，動(dong)(dong)(dong)(dong)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)應十分平(ping)直(zhi)和(he)(he)光潔(jie)。彈(dan)簧(huang)(huang)力和(he)(he)被密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)的(de)(de)(de)(de)流體(ti)壓(ya)力使動(dong)(dong)(dong)(dong)環(huan)貼(tie)緊靜環(huan)。因動(dong)(dong)(dong)(dong)環(huan)與軸(zhou)通(tong)過(guo)彈(dan)簧(huang)(huang)連接，動(dong)(dong)(dong)(dong)環(huan)和(he)(he)靜環(huan)間(jian)貼(tie)合(he)性受(shou)軸(zhou)的(de)(de)(de)(de)振動(dong)(dong)(dong)(dong)和(he)(he)擺動(dong)(dong)(dong)(dong)影響較小。靜環(huan)一(yi)般(ban)常用(yong)(yong)潤滑(hua)性好(hao)的(de)(de)(de)(de)軟質(zhi)(zhi)材料(liao)如石墨、填充聚四氟乙烯(xi)等，動(dong)(dong)(dong)(dong)環(huan)多(duo)用(yong)(yong)硬質(zhi)(zhi)合(he)金、陶瓷等材料(liao)制造。