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聯系客服,馬上詢價
發(fa)布時(shi)間:2021-12-20 15:24:47 人氣:94419 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。渣漿曲松泵用曲松機械密封的工作原理要求曲松機械密封內部無任何雜質,在組裝曲松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曲松機械密封嚴重漏(lou)泄。必要(yao)時(shi)可以(yi)制(zhi)作工裝(zhuang)在組(zu)裝(zhuang)前水壓(ya)試驗,檢查(cha)動靜環座是(shi)否存在影響密封的缺(que)陷(xian)。
渣漿曲松泵用曲松機械密封由于密封面變形所引起的,而且曲松機械密封面泄漏的概率是很高的。如果泵在啟動時就發生曲松泵用曲松機械密封泄漏,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曲松機械密封的變形(xing)(xing)(xing)情(qing)況(kuang)。如果發生變形(xing)(xing)(xing),用平晶檢查密封面的干涉帶的變化情(qing)況(kuang),密封面變形(xing)(xing)(xing)存在于動環和靜環之間(jian)。
壓(ya)缸體動(dong)(dong)(dong)態密(mi)(mi)(mi)封(feng)(feng)(feng)系統(tong)采用(yong)的(de)(de)是主(zhu)密(mi)(mi)(mi)封(feng)(feng)(feng)設(she)計,一般都用(yong)U型(xing)密(mi)(mi)(mi)封(feng)(feng)(feng)圈。液壓(ya)缸體的(de)(de)往復式(shi)動(dong)(dong)(dong)態密(mi)(mi)(mi)封(feng)(feng)(feng)系統(tong)的(de)(de)設(she)計,開始使(shi)用(yong)了更(geng)加復雜的(de)(de)U型(xing)圈和同軸(zhou)密(mi)(mi)(mi)封(feng)(feng)(feng)組件的(de)(de)復合(he)式(shi)設(she)計。密(mi)(mi)(mi)封(feng)(feng)(feng)的(de)(de)靜(jing)環(huan)(huan)通常固(gu)定在殼體上,動(dong)(dong)(dong)環(huan)(huan)通過(guo)彈(dan)簧、彈(dan)簧座與(yu)軸(zhou)一同旋轉。靜(jing)環(huan)(huan)與(yu)殼體、動(dong)(dong)(dong)環(huan)(huan)與(yu)軸(zhou)形(xing)成(cheng)(cheng)的(de)(de)間隙用(yong)成(cheng)(cheng)型(xing)填料(liao)(liao)密(mi)(mi)(mi)封(feng)(feng)(feng)。在動(dong)(dong)(dong)環(huan)(huan)和靜(jing)環(huan)(huan)接觸的(de)(de)端面(mian)形(xing)成(cheng)(cheng)相對滑動(dong)(dong)(dong)面(mian),即(ji)動(dong)(dong)(dong)密(mi)(mi)(mi)封(feng)(feng)(feng)面(mian)。為保(bao)證密(mi)(mi)(mi)封(feng)(feng)(feng)良好,動(dong)(dong)(dong)密(mi)(mi)(mi)封(feng)(feng)(feng)面(mian)應十分平直和光潔。彈(dan)簧力和被密(mi)(mi)(mi)封(feng)(feng)(feng)的(de)(de)流(liu)體壓(ya)力使(shi)動(dong)(dong)(dong)環(huan)(huan)貼緊靜(jing)環(huan)(huan)。因(yin)動(dong)(dong)(dong)環(huan)(huan)與(yu)軸(zhou)通過(guo)彈(dan)簧連接,動(dong)(dong)(dong)環(huan)(huan)和靜(jing)環(huan)(huan)間貼合(he)性受軸(zhou)的(de)(de)振(zhen)動(dong)(dong)(dong)和擺動(dong)(dong)(dong)影響較小。靜(jing)環(huan)(huan)一般常用(yong)潤滑性好的(de)(de)軟(ruan)質材(cai)料(liao)(liao)如石(shi)墨、填充聚四(si)氟(fu)乙烯等,動(dong)(dong)(dong)環(huan)(huan)多用(yong)硬質合(he)金、陶瓷等材(cai)料(liao)(liao)制造。