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。渣漿迪慶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(zhong)漏泄。必要時可以制(zhi)作(zuo)工裝(zhuang)在(zai)組(zu)裝(zhuang)前水壓試驗，檢查(cha)動靜環座是否存在(zai)影(ying)響密封的缺(que)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)況。如果(guo)發生變形，用平晶檢(jian)查密(mi)封(feng)面的干涉(she)帶的變化情(qing)況，密(mi)封(feng)面變形存(cun)在于動(dong)環(huan)和靜環(huan)之間。

　　壓(ya)缸體(ti)動(dong)(dong)(dong)態密(mi)(mi)(mi)(mi)(mi)封(feng)系(xi)統采用(yong)的(de)(de)(de)是主密(mi)(mi)(mi)(mi)(mi)封(feng)設計(ji)，一般都用(yong)U型(xing)(xing)密(mi)(mi)(mi)(mi)(mi)封(feng)圈。液壓(ya)缸體(ti)的(de)(de)(de)往復式(shi)動(dong)(dong)(dong)態密(mi)(mi)(mi)(mi)(mi)封(feng)系(xi)統的(de)(de)(de)設計(ji)，開始使用(yong)了(le)更加復雜(za)的(de)(de)(de)U型(xing)(xing)圈和(he)同軸密(mi)(mi)(mi)(mi)(mi)封(feng)組(zu)件的(de)(de)(de)復合式(shi)設計(ji)。密(mi)(mi)(mi)(mi)(mi)封(feng)的(de)(de)(de)靜(jing)(jing)(jing)(jing)(jing)環(huan)(huan)(huan)通(tong)(tong)常(chang)固定在殼體(ti)上，動(dong)(dong)(dong)環(huan)(huan)(huan)通(tong)(tong)過彈(dan)簧(huang)(huang)、彈(dan)簧(huang)(huang)座(zuo)與軸一同旋轉。靜(jing)(jing)(jing)(jing)(jing)環(huan)(huan)(huan)與殼體(ti)、動(dong)(dong)(dong)環(huan)(huan)(huan)與軸形(xing)成(cheng)的(de)(de)(de)間(jian)隙用(yong)成(cheng)型(xing)(xing)填(tian)料(liao)密(mi)(mi)(mi)(mi)(mi)封(feng)。在動(dong)(dong)(dong)環(huan)(huan)(huan)和(he)靜(jing)(jing)(jing)(jing)(jing)環(huan)(huan)(huan)接觸的(de)(de)(de)端面(mian)形(xing)成(cheng)相對滑動(dong)(dong)(dong)面(mian)，即(ji)動(dong)(dong)(dong)密(mi)(mi)(mi)(mi)(mi)封(feng)面(mian)。為保(bao)證密(mi)(mi)(mi)(mi)(mi)封(feng)良好，動(dong)(dong)(dong)密(mi)(mi)(mi)(mi)(mi)封(feng)面(mian)應(ying)十分(fen)平直和(he)光潔。彈(dan)簧(huang)(huang)力和(he)被密(mi)(mi)(mi)(mi)(mi)封(feng)的(de)(de)(de)流體(ti)壓(ya)力使動(dong)(dong)(dong)環(huan)(huan)(huan)貼(tie)緊(jin)靜(jing)(jing)(jing)(jing)(jing)環(huan)(huan)(huan)。因動(dong)(dong)(dong)環(huan)(huan)(huan)與軸通(tong)(tong)過彈(dan)簧(huang)(huang)連接，動(dong)(dong)(dong)環(huan)(huan)(huan)和(he)靜(jing)(jing)(jing)(jing)(jing)環(huan)(huan)(huan)間(jian)貼(tie)合性受軸的(de)(de)(de)振動(dong)(dong)(dong)和(he)擺動(dong)(dong)(dong)影響(xiang)較小(xiao)。靜(jing)(jing)(jing)(jing)(jing)環(huan)(huan)(huan)一般常(chang)用(yong)潤滑性好的(de)(de)(de)軟質材料(liao)如石墨、填(tian)充聚四氟乙烯等，動(dong)(dong)(dong)環(huan)(huan)(huan)多(duo)用(yong)硬(ying)質合金、陶瓷等材料(liao)制造(zao)。