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。渣漿泵用吳興機械密封的工作原理要求吳興機械密封內部無任何雜質，在組裝吳興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吳興機械密封嚴重漏泄。必要時可以制作工(gong)裝在(zai)組裝前水壓(ya)試驗，檢查(cha)動靜(jing)環座是否存在(zai)影響密(mi)封的缺陷。

　　渣漿吳興泵用吳興機械密封由于密封面變形所引起的，而且吳興機械密封面泄漏的概率是很高的。如果泵在啟動時就發生吳興泵用吳興機械密封泄漏，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吳興機械密封的變形(xing)情況。如果發生變形(xing)，用平晶檢查(cha)密封面的干涉帶的變化情況，密封面變形(xing)存在于動(dong)環和靜環之間(jian)。

　　壓缸(gang)(gang)體(ti)動(dong)(dong)(dong)態(tai)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)統采用(yong)(yong)的(de)是主(zhu)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)設(she)計(ji)，一般都用(yong)(yong)U型密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)圈(quan)(quan)。液壓缸(gang)(gang)體(ti)的(de)往復式動(dong)(dong)(dong)態(tai)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)系(xi)統的(de)設(she)計(ji)，開始使(shi)用(yong)(yong)了更加復雜的(de)U型圈(quan)(quan)和同軸密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)組件(jian)的(de)復合(he)式設(she)計(ji)。密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)的(de)靜(jing)(jing)(jing)(jing)環(huan)(huan)(huan)(huan)通(tong)常固定在殼體(ti)上，動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)通(tong)過彈(dan)簧(huang)、彈(dan)簧(huang)座與(yu)軸一同旋轉。靜(jing)(jing)(jing)(jing)環(huan)(huan)(huan)(huan)與(yu)殼體(ti)、動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)與(yu)軸形(xing)成的(de)間(jian)隙用(yong)(yong)成型填(tian)料(liao)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)。在動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)和靜(jing)(jing)(jing)(jing)環(huan)(huan)(huan)(huan)接觸的(de)端面形(xing)成相對滑(hua)動(dong)(dong)(dong)面，即動(dong)(dong)(dong)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)面。為保(bao)證密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)良好(hao)，動(dong)(dong)(dong)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)面應十分平直和光潔(jie)。彈(dan)簧(huang)力(li)和被密(mi)(mi)(mi)(mi)封(feng)(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)(jing)(jing)環(huan)(huan)(huan)(huan)。因動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)與(yu)軸通(tong)過彈(dan)簧(huang)連(lian)接，動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)和靜(jing)(jing)(jing)(jing)環(huan)(huan)(huan)(huan)間(jian)貼合(he)性受軸的(de)振動(dong)(dong)(dong)和擺動(dong)(dong)(dong)影(ying)響較小。靜(jing)(jing)(jing)(jing)環(huan)(huan)(huan)(huan)一般常用(yong)(yong)潤滑(hua)性好(hao)的(de)軟質材(cai)(cai)料(liao)如石墨、填(tian)充聚四(si)氟乙(yi)烯(xi)等，動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)多用(yong)(yong)硬(ying)質合(he)金(jin)、陶(tao)瓷等材(cai)(cai)料(liao)制(zhi)造。