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聯系客服,馬上詢價
發(fa)布(bu)時(shi)間:2021-06-01 15:10:39 人氣(qi):181209 來源:川工密封
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。渣漿泵用新政鎮機械密封的工作原理要求新政鎮機械密封內部無任何雜質,在組裝新政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新政鎮機械密封嚴重漏(lou)泄。必要時(shi)可(ke)以制作工裝在組裝前水壓試驗,檢查動靜(jing)環座是否存(cun)在影響密封(feng)的缺(que)陷。
渣漿新政鎮泵用新政鎮機械密封由于密封面變形所引起的,而且新政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新政鎮泵用新政鎮機械密封泄漏,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新政鎮機械密封的(de)(de)變(bian)形情(qing)況(kuang)。如果發生變(bian)形,用(yong)平(ping)晶檢(jian)查密(mi)封面的(de)(de)干涉帶的(de)(de)變(bian)化情(qing)況(kuang),密(mi)封面變(bian)形存(cun)在于動環(huan)和靜(jing)環(huan)之間。
壓缸(gang)(gang)體(ti)動(dong)(dong)(dong)(dong)態密封(feng)系統采用(yong)的(de)(de)(de)是(shi)主密封(feng)設計,一(yi)般都(dou)用(yong)U型(xing)密封(feng)圈。液壓缸(gang)(gang)體(ti)的(de)(de)(de)往(wang)復式(shi)動(dong)(dong)(dong)(dong)態密封(feng)系統的(de)(de)(de)設計,開始使用(yong)了更加復雜的(de)(de)(de)U型(xing)圈和同(tong)軸(zhou)密封(feng)組件(jian)的(de)(de)(de)復合(he)式(shi)設計。密封(feng)的(de)(de)(de)靜(jing)環(huan)(huan)(huan)通常固定(ding)在殼體(ti)上(shang),動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)通過彈(dan)(dan)簧、彈(dan)(dan)簧座與軸(zhou)一(yi)同(tong)旋轉(zhuan)。靜(jing)環(huan)(huan)(huan)與殼體(ti)、動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)與軸(zhou)形成(cheng)的(de)(de)(de)間隙(xi)用(yong)成(cheng)型(xing)填料密封(feng)。在動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)和靜(jing)環(huan)(huan)(huan)接(jie)觸的(de)(de)(de)端面形成(cheng)相對(dui)滑動(dong)(dong)(dong)(dong)面,即動(dong)(dong)(dong)(dong)密封(feng)面。為(wei)保(bao)證密封(feng)良(liang)好(hao),動(dong)(dong)(dong)(dong)密封(feng)面應十(shi)分平直和光潔。彈(dan)(dan)簧力(li)和被密封(feng)的(de)(de)(de)流體(ti)壓力(li)使動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)貼緊靜(jing)環(huan)(huan)(huan)。因動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)與軸(zhou)通過彈(dan)(dan)簧連(lian)接(jie),動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)和靜(jing)環(huan)(huan)(huan)間貼合(he)性受軸(zhou)的(de)(de)(de)振動(dong)(dong)(dong)(dong)和擺動(dong)(dong)(dong)(dong)影(ying)響(xiang)較(jiao)小。靜(jing)環(huan)(huan)(huan)一(yi)般常用(yong)潤滑性好(hao)的(de)(de)(de)軟質(zhi)材料如石墨、填充聚(ju)四氟乙烯等,動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)多用(yong)硬質(zhi)合(he)金、陶瓷等材料制(zhi)造。