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。渣漿泵用迪慶機械密封的工作原理要求迪慶機械密封內部無任何雜質，在組裝迪慶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迪慶機械密封嚴重漏泄。必要時可以制作工裝(zhuang)在(zai)組裝(zhuang)前水壓試驗，檢查(cha)動靜(jing)環座是否存在(zai)影響(xiang)密封的(de)缺陷。

　　渣漿迪慶泵用迪慶機械密封由于密封面變形所引起的，而且迪慶機械密封面泄漏的概率是很高的。如果泵在啟動時就發生迪慶泵用迪慶機械密封泄漏，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迪慶機械密封的變形情(qing)(qing)況(kuang)。如(ru)果發(fa)生(sheng)變形，用(yong)平晶檢(jian)查密封面的干涉帶的變化情(qing)(qing)況(kuang)，密封面變形存在于動環和靜(jing)環之間。

　　壓缸體(ti)動(dong)(dong)(dong)(dong)(dong)態(tai)密(mi)(mi)封(feng)系統采用(yong)(yong)(yong)的(de)(de)(de)是主(zhu)密(mi)(mi)封(feng)設計(ji)，一般(ban)都(dou)用(yong)(yong)(yong)U型密(mi)(mi)封(feng)圈。液壓缸體(ti)的(de)(de)(de)往(wang)復式(shi)動(dong)(dong)(dong)(dong)(dong)態(tai)密(mi)(mi)封(feng)系統的(de)(de)(de)設計(ji)，開始(shi)使用(yong)(yong)(yong)了更加復雜的(de)(de)(de)U型圈和(he)(he)同軸(zhou)密(mi)(mi)封(feng)組件的(de)(de)(de)復合式(shi)設計(ji)。密(mi)(mi)封(feng)的(de)(de)(de)靜(jing)(jing)(jing)環(huan)(huan)(huan)通(tong)常固定在殼體(ti)上，動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)通(tong)過彈(dan)簧(huang)、彈(dan)簧(huang)座與(yu)軸(zhou)一同旋轉。靜(jing)(jing)(jing)環(huan)(huan)(huan)與(yu)殼體(ti)、動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)與(yu)軸(zhou)形(xing)成的(de)(de)(de)間隙用(yong)(yong)(yong)成型填料(liao)密(mi)(mi)封(feng)。在動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)和(he)(he)靜(jing)(jing)(jing)環(huan)(huan)(huan)接觸的(de)(de)(de)端面(mian)(mian)形(xing)成相對滑動(dong)(dong)(dong)(dong)(dong)面(mian)(mian)，即動(dong)(dong)(dong)(dong)(dong)密(mi)(mi)封(feng)面(mian)(mian)。為保證密(mi)(mi)封(feng)良好(hao)，動(dong)(dong)(dong)(dong)(dong)密(mi)(mi)封(feng)面(mian)(mian)應十分平直和(he)(he)光潔。彈(dan)簧(huang)力(li)(li)和(he)(he)被密(mi)(mi)封(feng)的(de)(de)(de)流體(ti)壓力(li)(li)使動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)貼緊靜(jing)(jing)(jing)環(huan)(huan)(huan)。因動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)與(yu)軸(zhou)通(tong)過彈(dan)簧(huang)連接，動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)和(he)(he)靜(jing)(jing)(jing)環(huan)(huan)(huan)間貼合性(xing)受軸(zhou)的(de)(de)(de)振(zhen)動(dong)(dong)(dong)(dong)(dong)和(he)(he)擺(bai)動(dong)(dong)(dong)(dong)(dong)影響(xiang)較小。靜(jing)(jing)(jing)環(huan)(huan)(huan)一般(ban)常用(yong)(yong)(yong)潤滑性(xing)好(hao)的(de)(de)(de)軟質(zhi)材(cai)料(liao)如石墨、填充聚四氟乙烯(xi)等(deng)，動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)多(duo)用(yong)(yong)(yong)硬質(zhi)合金、陶瓷等(deng)材(cai)料(liao)制造。