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。渣漿泵用喀什機械密封的工作原理要求喀什機械密封內部無任何雜質，在組裝喀什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喀什機械密封嚴重漏泄(xie)。必要時可以制作工裝在組裝前水壓試(shi)驗，檢查動靜環座是否存在影響密封(feng)的缺陷。

　　渣漿喀什泵用喀什機械密封由于密封面變形所引起的，而且喀什機械密封面泄漏的概率是很高的。如果泵在啟動時就發生喀什泵用喀什機械密封泄漏，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喀什機械密封的變形(xing)(xing)情(qing)況(kuang)。如果(guo)發(fa)生變形(xing)(xing)，用平晶檢(jian)查密封(feng)面(mian)的干涉帶(dai)的變化情(qing)況(kuang)，密封(feng)面(mian)變形(xing)(xing)存在于動環和(he)靜環之間。

　　壓缸體動(dong)(dong)(dong)(dong)態(tai)(tai)密(mi)(mi)封(feng)系統(tong)(tong)采用(yong)的(de)(de)(de)是主(zhu)密(mi)(mi)封(feng)設(she)計(ji)，一(yi)(yi)般(ban)都用(yong)U型密(mi)(mi)封(feng)圈(quan)。液壓缸體的(de)(de)(de)往復(fu)式動(dong)(dong)(dong)(dong)態(tai)(tai)密(mi)(mi)封(feng)系統(tong)(tong)的(de)(de)(de)設(she)計(ji)，開始(shi)使用(yong)了(le)更加(jia)復(fu)雜的(de)(de)(de)U型圈(quan)和同軸(zhou)(zhou)密(mi)(mi)封(feng)組件的(de)(de)(de)復(fu)合式設(she)計(ji)。密(mi)(mi)封(feng)的(de)(de)(de)靜(jing)(jing)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)通常(chang)固(gu)定(ding)在殼體上，動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)通過彈(dan)(dan)簧(huang)、彈(dan)(dan)簧(huang)座與軸(zhou)(zhou)一(yi)(yi)同旋轉(zhuan)。靜(jing)(jing)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)與殼體、動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)與軸(zhou)(zhou)形成的(de)(de)(de)間隙用(yong)成型填料密(mi)(mi)封(feng)。在動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)和靜(jing)(jing)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)接觸的(de)(de)(de)端面(mian)形成相對滑動(dong)(dong)(dong)(dong)面(mian)，即動(dong)(dong)(dong)(dong)密(mi)(mi)封(feng)面(mian)。為保證密(mi)(mi)封(feng)良好(hao)，動(dong)(dong)(dong)(dong)密(mi)(mi)封(feng)面(mian)應十分平直(zhi)和光潔。彈(dan)(dan)簧(huang)力(li)和被密(mi)(mi)封(feng)的(de)(de)(de)流體壓力(li)使動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)貼緊靜(jing)(jing)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)。因(yin)動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)與軸(zhou)(zhou)通過彈(dan)(dan)簧(huang)連接，動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)和靜(jing)(jing)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)間貼合性受軸(zhou)(zhou)的(de)(de)(de)振(zhen)動(dong)(dong)(dong)(dong)和擺動(dong)(dong)(dong)(dong)影(ying)響較(jiao)小。靜(jing)(jing)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)一(yi)(yi)般(ban)常(chang)用(yong)潤滑性好(hao)的(de)(de)(de)軟(ruan)質材料如石墨、填充(chong)聚四(si)氟(fu)乙烯等(deng)，動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)(huan)(huan)多(duo)用(yong)硬質合金、陶(tao)瓷等(deng)材料制造。