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。渣漿泵用琿春機械密封的工作原理要求琿春機械密封內部無任何雜質，在組裝琿春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琿春機械密封嚴重漏泄。必要(yao)時可以制作工裝在組裝前水壓試驗，檢查動靜環座是否存在影響(xiang)密封(feng)的缺陷(xian)。

　　渣漿琿春泵用琿春機械密封由于密封面變形所引起的，而且琿春機械密封面泄漏的概率是很高的。如果泵在啟動時就發生琿春泵用琿春機械密封泄漏，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琿春機械密封的變形情況。如(ru)果發生變形，用平晶(jing)檢查密封(feng)面的干涉帶的變化情況，密封(feng)面變形存在于動環(huan)和(he)靜環(huan)之間。

　　壓(ya)缸(gang)體(ti)動(dong)(dong)(dong)(dong)(dong)態密(mi)(mi)(mi)(mi)(mi)封(feng)系(xi)統采用(yong)的(de)(de)(de)(de)是主(zhu)密(mi)(mi)(mi)(mi)(mi)封(feng)設(she)計，一(yi)般(ban)都用(yong)U型密(mi)(mi)(mi)(mi)(mi)封(feng)圈。液壓(ya)缸(gang)體(ti)的(de)(de)(de)(de)往復式(shi)動(dong)(dong)(dong)(dong)(dong)態密(mi)(mi)(mi)(mi)(mi)封(feng)系(xi)統的(de)(de)(de)(de)設(she)計，開始使(shi)用(yong)了(le)更加復雜的(de)(de)(de)(de)U型圈和(he)同軸(zhou)密(mi)(mi)(mi)(mi)(mi)封(feng)組件的(de)(de)(de)(de)復合(he)式(shi)設(she)計。密(mi)(mi)(mi)(mi)(mi)封(feng)的(de)(de)(de)(de)靜環(huan)(huan)通常固定在(zai)殼體(ti)上，動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)通過彈(dan)(dan)簧(huang)、彈(dan)(dan)簧(huang)座與軸(zhou)一(yi)同旋轉。靜環(huan)(huan)與殼體(ti)、動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)與軸(zhou)形成(cheng)的(de)(de)(de)(de)間(jian)隙用(yong)成(cheng)型填料(liao)密(mi)(mi)(mi)(mi)(mi)封(feng)。在(zai)動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)和(he)靜環(huan)(huan)接觸的(de)(de)(de)(de)端面形成(cheng)相對滑動(dong)(dong)(dong)(dong)(dong)面，即動(dong)(dong)(dong)(dong)(dong)密(mi)(mi)(mi)(mi)(mi)封(feng)面。為保證密(mi)(mi)(mi)(mi)(mi)封(feng)良好(hao)(hao)，動(dong)(dong)(dong)(dong)(dong)密(mi)(mi)(mi)(mi)(mi)封(feng)面應十分平直和(he)光潔。彈(dan)(dan)簧(huang)力和(he)被密(mi)(mi)(mi)(mi)(mi)封(feng)的(de)(de)(de)(de)流體(ti)壓(ya)力使(shi)動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)貼緊靜環(huan)(huan)。因動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)與軸(zhou)通過彈(dan)(dan)簧(huang)連接，動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)和(he)靜環(huan)(huan)間(jian)貼合(he)性受軸(zhou)的(de)(de)(de)(de)振動(dong)(dong)(dong)(dong)(dong)和(he)擺動(dong)(dong)(dong)(dong)(dong)影(ying)響較小(xiao)。靜環(huan)(huan)一(yi)般(ban)常用(yong)潤滑性好(hao)(hao)的(de)(de)(de)(de)軟質(zhi)材料(liao)如石墨、填充(chong)聚四氟(fu)乙(yi)烯等(deng)，動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)多用(yong)硬(ying)質(zhi)合(he)金、陶瓷等(deng)材料(liao)制造。