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。渣漿洪梅鎮泵用洪梅鎮機械密封的工作原理要求洪梅鎮機械密封內部無任何雜質，在組裝洪梅鎮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洪梅鎮機械密封嚴重漏泄(xie)。必要時可以(yi)制作工裝(zhuang)在組裝(zhuang)前水壓試驗，檢(jian)查動靜環座是否(fou)存在影響密(mi)封的缺陷。

　　渣漿洪梅鎮泵用洪梅鎮機械密封由于密封面變形所引起的，而且洪梅鎮機械密封面泄漏的概率是很高的。如果泵在啟動時就發生洪梅鎮泵用洪梅鎮機械密封泄漏，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洪梅鎮機械密封的(de)變形情況。如(ru)果發(fa)生變形，用平晶(jing)檢查密(mi)封面的(de)干涉帶的(de)變化情況，密(mi)封面變形存在于(yu)動環和靜環之間。

　　壓缸體動(dong)(dong)(dong)(dong)(dong)(dong)態(tai)密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)系(xi)統(tong)采(cai)用(yong)(yong)的(de)(de)是主密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)設計(ji)(ji)，一(yi)般都(dou)用(yong)(yong)U型密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)圈。液壓缸體的(de)(de)往復式(shi)動(dong)(dong)(dong)(dong)(dong)(dong)態(tai)密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)系(xi)統(tong)的(de)(de)設計(ji)(ji)，開始使(shi)用(yong)(yong)了更加復雜的(de)(de)U型圈和(he)(he)同軸(zhou)(zhou)密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)組件的(de)(de)復合式(shi)設計(ji)(ji)。密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)的(de)(de)靜(jing)環(huan)通常(chang)固定在(zai)殼(ke)體上(shang)，動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)通過彈(dan)簧、彈(dan)簧座與(yu)軸(zhou)(zhou)一(yi)同旋轉(zhuan)。靜(jing)環(huan)與(yu)殼(ke)體、動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)與(yu)軸(zhou)(zhou)形(xing)成的(de)(de)間(jian)隙用(yong)(yong)成型填(tian)料密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)。在(zai)動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)和(he)(he)靜(jing)環(huan)接觸的(de)(de)端面(mian)形(xing)成相(xiang)對(dui)滑動(dong)(dong)(dong)(dong)(dong)(dong)面(mian)，即動(dong)(dong)(dong)(dong)(dong)(dong)密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)面(mian)。為保(bao)證密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)良好(hao)，動(dong)(dong)(dong)(dong)(dong)(dong)密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)面(mian)應(ying)十分(fen)平直和(he)(he)光潔。彈(dan)簧力和(he)(he)被密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)的(de)(de)流體壓力使(shi)動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)貼(tie)緊靜(jing)環(huan)。因動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)與(yu)軸(zhou)(zhou)通過彈(dan)簧連接，動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)和(he)(he)靜(jing)環(huan)間(jian)貼(tie)合性受軸(zhou)(zhou)的(de)(de)振動(dong)(dong)(dong)(dong)(dong)(dong)和(he)(he)擺動(dong)(dong)(dong)(dong)(dong)(dong)影響較小。靜(jing)環(huan)一(yi)般常(chang)用(yong)(yong)潤滑性好(hao)的(de)(de)軟質材料如(ru)石墨、填(tian)充聚四氟乙烯等，動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)多用(yong)(yong)硬質合金、陶瓷等材料制造。