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聯系客服,馬上詢價
發布(bu)時間(jian):2021-12-20 15:24:47 人氣:98729 來源:
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。渣漿孝感泵用孝感機械密封的工作原理要求孝感機械密封內部無任何雜質,在組裝孝感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孝感機械密封嚴重漏泄。必要(yao)時可以制作工裝(zhuang)在組裝(zhuang)前水壓(ya)試驗,檢(jian)查動靜環(huan)座是(shi)否存在影響(xiang)密封的缺陷。
渣漿孝感泵用孝感機械密封由于密封面變形所引起的,而且孝感機械密封面泄漏的概率是很高的。如果泵在啟動時就發生孝感泵用孝感機械密封泄漏,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孝感機械密封的(de)變(bian)形(xing)(xing)情況。如果發生(sheng)變(bian)形(xing)(xing),用平晶檢(jian)查密封面(mian)的(de)干涉帶的(de)變(bian)化情況,密封面(mian)變(bian)形(xing)(xing)存在于動環(huan)(huan)和靜(jing)環(huan)(huan)之間(jian)。
壓(ya)缸體(ti)動(dong)(dong)(dong)態(tai)(tai)密(mi)(mi)(mi)封(feng)(feng)系(xi)統采用(yong)的(de)(de)是主密(mi)(mi)(mi)封(feng)(feng)設計,一(yi)般都用(yong)U型(xing)密(mi)(mi)(mi)封(feng)(feng)圈(quan)。液(ye)壓(ya)缸體(ti)的(de)(de)往復式(shi)動(dong)(dong)(dong)態(tai)(tai)密(mi)(mi)(mi)封(feng)(feng)系(xi)統的(de)(de)設計,開始(shi)使用(yong)了更加復雜的(de)(de)U型(xing)圈(quan)和(he)同軸密(mi)(mi)(mi)封(feng)(feng)組件的(de)(de)復合式(shi)設計。密(mi)(mi)(mi)封(feng)(feng)的(de)(de)靜環(huan)(huan)通(tong)(tong)(tong)常固定在殼(ke)體(ti)上,動(dong)(dong)(dong)環(huan)(huan)通(tong)(tong)(tong)過(guo)彈(dan)簧(huang)(huang)、彈(dan)簧(huang)(huang)座與(yu)軸一(yi)同旋轉。靜環(huan)(huan)與(yu)殼(ke)體(ti)、動(dong)(dong)(dong)環(huan)(huan)與(yu)軸形成的(de)(de)間隙(xi)用(yong)成型(xing)填料密(mi)(mi)(mi)封(feng)(feng)。在動(dong)(dong)(dong)環(huan)(huan)和(he)靜環(huan)(huan)接觸的(de)(de)端(duan)面(mian)(mian)形成相對滑動(dong)(dong)(dong)面(mian)(mian),即(ji)動(dong)(dong)(dong)密(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)。為(wei)保(bao)證(zheng)密(mi)(mi)(mi)封(feng)(feng)良好,動(dong)(dong)(dong)密(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)應十(shi)分(fen)平直和(he)光(guang)潔。彈(dan)簧(huang)(huang)力和(he)被密(mi)(mi)(mi)封(feng)(feng)的(de)(de)流體(ti)壓(ya)力使動(dong)(dong)(dong)環(huan)(huan)貼(tie)緊靜環(huan)(huan)。因動(dong)(dong)(dong)環(huan)(huan)與(yu)軸通(tong)(tong)(tong)過(guo)彈(dan)簧(huang)(huang)連接,動(dong)(dong)(dong)環(huan)(huan)和(he)靜環(huan)(huan)間貼(tie)合性受軸的(de)(de)振動(dong)(dong)(dong)和(he)擺動(dong)(dong)(dong)影響較小。靜環(huan)(huan)一(yi)般常用(yong)潤滑性好的(de)(de)軟質材料如石墨、填充(chong)聚四氟乙烯等,動(dong)(dong)(dong)環(huan)(huan)多用(yong)硬質合金(jin)、陶(tao)瓷等材料制造。