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。渣漿伊犁泵用伊犁機械密封的工作原理要求伊犁機械密封內部無任何雜質，在組裝伊犁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伊犁機械密封嚴重漏泄。必要(yao)時(shi)可以制作工裝(zhuang)在組裝(zhuang)前水壓試驗，檢查動(dong)靜環(huan)座是否存在影響(xiang)密封的(de)缺陷。

　　渣漿伊犁泵用伊犁機械密封由于密封面變形所引起的，而且伊犁機械密封面泄漏的概率是很高的。如果泵在啟動時就發生伊犁泵用伊犁機械密封泄漏，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伊犁機械密封的變(bian)(bian)形(xing)(xing)情況。如果(guo)發(fa)生變(bian)(bian)形(xing)(xing)，用平晶檢查密封面的干(gan)涉帶的變(bian)(bian)化(hua)情況，密封面變(bian)(bian)形(xing)(xing)存在于動(dong)環和(he)靜(jing)環之間。

　　壓缸體(ti)動(dong)(dong)(dong)(dong)態(tai)密(mi)(mi)(mi)封(feng)(feng)系統采用(yong)的(de)是主密(mi)(mi)(mi)封(feng)(feng)設計，一(yi)般(ban)都用(yong)U型密(mi)(mi)(mi)封(feng)(feng)圈。液壓缸體(ti)的(de)往復式動(dong)(dong)(dong)(dong)態(tai)密(mi)(mi)(mi)封(feng)(feng)系統的(de)設計，開始(shi)使用(yong)了更加(jia)復雜的(de)U型圈和(he)(he)(he)同(tong)軸(zhou)密(mi)(mi)(mi)封(feng)(feng)組件的(de)復合(he)式設計。密(mi)(mi)(mi)封(feng)(feng)的(de)靜環(huan)(huan)(huan)(huan)(huan)通(tong)常(chang)(chang)固定在殼體(ti)上，動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)通(tong)過彈簧(huang)、彈簧(huang)座與軸(zhou)一(yi)同(tong)旋轉。靜環(huan)(huan)(huan)(huan)(huan)與殼體(ti)、動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)與軸(zhou)形成的(de)間(jian)隙用(yong)成型填料密(mi)(mi)(mi)封(feng)(feng)。在動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)和(he)(he)(he)靜環(huan)(huan)(huan)(huan)(huan)接觸(chu)的(de)端面(mian)形成相對滑動(dong)(dong)(dong)(dong)面(mian)，即(ji)動(dong)(dong)(dong)(dong)密(mi)(mi)(mi)封(feng)(feng)面(mian)。為(wei)保證密(mi)(mi)(mi)封(feng)(feng)良好(hao)，動(dong)(dong)(dong)(dong)密(mi)(mi)(mi)封(feng)(feng)面(mian)應十分平(ping)直和(he)(he)(he)光潔。彈簧(huang)力(li)和(he)(he)(he)被密(mi)(mi)(mi)封(feng)(feng)的(de)流體(ti)壓力(li)使動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)貼緊靜環(huan)(huan)(huan)(huan)(huan)。因動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)與軸(zhou)通(tong)過彈簧(huang)連接，動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)和(he)(he)(he)靜環(huan)(huan)(huan)(huan)(huan)間(jian)貼合(he)性受軸(zhou)的(de)振(zhen)動(dong)(dong)(dong)(dong)和(he)(he)(he)擺(bai)動(dong)(dong)(dong)(dong)影響較小。靜環(huan)(huan)(huan)(huan)(huan)一(yi)般(ban)常(chang)(chang)用(yong)潤滑性好(hao)的(de)軟(ruan)質材料如石墨、填充聚四氟乙烯等，動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)多用(yong)硬質合(he)金(jin)、陶瓷等材料制造。