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。渣漿連山泵用連山機械密封的工作原理要求連山機械密封內部無任何雜質，在組裝連山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連山機械密封嚴重(zhong)漏泄。必要時可以制作工(gong)裝在組裝前水壓試驗(yan)，檢(jian)查動靜環座(zuo)是否存在影響密封的缺(que)陷。

　　渣漿連山泵用連山機械密封由于密封面變形所引起的，而且連山機械密封面泄漏的概率是很高的。如果泵在啟動時就發生連山泵用連山機械密封泄漏，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連山機械密封的(de)變(bian)(bian)(bian)形(xing)情(qing)況(kuang)。如果發(fa)生變(bian)(bian)(bian)形(xing)，用平晶(jing)檢查密封面(mian)的(de)干涉帶的(de)變(bian)(bian)(bian)化(hua)情(qing)況(kuang)，密封面(mian)變(bian)(bian)(bian)形(xing)存在于動環(huan)和靜環(huan)之間。

　　壓(ya)缸體動(dong)(dong)(dong)態密(mi)封(feng)(feng)(feng)(feng)系統采(cai)用(yong)(yong)(yong)的(de)(de)是主(zhu)密(mi)封(feng)(feng)(feng)(feng)設計(ji)，一般都用(yong)(yong)(yong)U型(xing)密(mi)封(feng)(feng)(feng)(feng)圈(quan)。液壓(ya)缸體的(de)(de)往復式(shi)動(dong)(dong)(dong)態密(mi)封(feng)(feng)(feng)(feng)系統的(de)(de)設計(ji)，開始使(shi)用(yong)(yong)(yong)了更加(jia)復雜的(de)(de)U型(xing)圈(quan)和同(tong)軸(zhou)(zhou)密(mi)封(feng)(feng)(feng)(feng)組件(jian)的(de)(de)復合(he)式(shi)設計(ji)。密(mi)封(feng)(feng)(feng)(feng)的(de)(de)靜(jing)環(huan)(huan)(huan)通(tong)常固(gu)定(ding)在殼(ke)(ke)體上(shang)，動(dong)(dong)(dong)環(huan)(huan)(huan)通(tong)過彈(dan)簧(huang)(huang)(huang)、彈(dan)簧(huang)(huang)(huang)座與軸(zhou)(zhou)一同(tong)旋轉(zhuan)。靜(jing)環(huan)(huan)(huan)與殼(ke)(ke)體、動(dong)(dong)(dong)環(huan)(huan)(huan)與軸(zhou)(zhou)形成的(de)(de)間隙(xi)用(yong)(yong)(yong)成型(xing)填料密(mi)封(feng)(feng)(feng)(feng)。在動(dong)(dong)(dong)環(huan)(huan)(huan)和靜(jing)環(huan)(huan)(huan)接觸(chu)的(de)(de)端面形成相對滑動(dong)(dong)(dong)面，即動(dong)(dong)(dong)密(mi)封(feng)(feng)(feng)(feng)面。為保證密(mi)封(feng)(feng)(feng)(feng)良(liang)好(hao)，動(dong)(dong)(dong)密(mi)封(feng)(feng)(feng)(feng)面應十分平直和光潔。彈(dan)簧(huang)(huang)(huang)力(li)和被密(mi)封(feng)(feng)(feng)(feng)的(de)(de)流(liu)體壓(ya)力(li)使(shi)動(dong)(dong)(dong)環(huan)(huan)(huan)貼緊靜(jing)環(huan)(huan)(huan)。因動(dong)(dong)(dong)環(huan)(huan)(huan)與軸(zhou)(zhou)通(tong)過彈(dan)簧(huang)(huang)(huang)連接，動(dong)(dong)(dong)環(huan)(huan)(huan)和靜(jing)環(huan)(huan)(huan)間貼合(he)性受軸(zhou)(zhou)的(de)(de)振(zhen)動(dong)(dong)(dong)和擺動(dong)(dong)(dong)影響較小(xiao)。靜(jing)環(huan)(huan)(huan)一般常用(yong)(yong)(yong)潤(run)滑性好(hao)的(de)(de)軟質(zhi)材(cai)料如石墨、填充聚(ju)四(si)氟(fu)乙(yi)烯(xi)等(deng)，動(dong)(dong)(dong)環(huan)(huan)(huan)多用(yong)(yong)(yong)硬(ying)質(zhi)合(he)金(jin)、陶瓷等(deng)材(cai)料制造。