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聯系客服,馬上詢價
發布時間:2021-06-01 15:10:39 人氣:170965 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。渣漿泵用六合機械密封的工作原理要求六合機械密封內部無任何雜質,在組裝六合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六合機械密封嚴重漏泄。必要(yao)時(shi)可(ke)以制(zhi)作工裝在組裝前水壓(ya)試驗,檢查(cha)動靜環座是否存在影響密(mi)封的缺陷。
渣漿六合泵用六合機械密封由于密封面變形所引起的,而且六合機械密封面泄漏的概率是很高的。如果泵在啟動時就發生六合泵用六合機械密封泄漏,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六合機械密封的(de)變(bian)形情況(kuang)。如果發生變(bian)形,用平晶(jing)檢查密封面的(de)干(gan)涉帶(dai)的(de)變(bian)化情況(kuang),密封面變(bian)形存(cun)在于動(dong)環和靜環之間。
壓缸體(ti)動(dong)(dong)(dong)(dong)(dong)態(tai)密(mi)(mi)(mi)(mi)封(feng)系統采用(yong)的(de)是主密(mi)(mi)(mi)(mi)封(feng)設(she)計(ji),一般都(dou)用(yong)U型密(mi)(mi)(mi)(mi)封(feng)圈。液壓缸體(ti)的(de)往復(fu)式(shi)(shi)動(dong)(dong)(dong)(dong)(dong)態(tai)密(mi)(mi)(mi)(mi)封(feng)系統的(de)設(she)計(ji),開始(shi)使(shi)用(yong)了更加復(fu)雜的(de)U型圈和(he)(he)同軸密(mi)(mi)(mi)(mi)封(feng)組件的(de)復(fu)合式(shi)(shi)設(she)計(ji)。密(mi)(mi)(mi)(mi)封(feng)的(de)靜(jing)(jing)(jing)環(huan)通常固定在殼(ke)體(ti)上,動(dong)(dong)(dong)(dong)(dong)環(huan)通過彈簧(huang)、彈簧(huang)座(zuo)與軸一同旋轉。靜(jing)(jing)(jing)環(huan)與殼(ke)體(ti)、動(dong)(dong)(dong)(dong)(dong)環(huan)與軸形成(cheng)的(de)間隙用(yong)成(cheng)型填(tian)料(liao)密(mi)(mi)(mi)(mi)封(feng)。在動(dong)(dong)(dong)(dong)(dong)環(huan)和(he)(he)靜(jing)(jing)(jing)環(huan)接觸的(de)端面形成(cheng)相對(dui)滑動(dong)(dong)(dong)(dong)(dong)面,即動(dong)(dong)(dong)(dong)(dong)密(mi)(mi)(mi)(mi)封(feng)面。為保證密(mi)(mi)(mi)(mi)封(feng)良好(hao),動(dong)(dong)(dong)(dong)(dong)密(mi)(mi)(mi)(mi)封(feng)面應十(shi)分平(ping)直和(he)(he)光(guang)潔。彈簧(huang)力和(he)(he)被密(mi)(mi)(mi)(mi)封(feng)的(de)流體(ti)壓力使(shi)動(dong)(dong)(dong)(dong)(dong)環(huan)貼(tie)緊(jin)靜(jing)(jing)(jing)環(huan)。因動(dong)(dong)(dong)(dong)(dong)環(huan)與軸通過彈簧(huang)連(lian)接,動(dong)(dong)(dong)(dong)(dong)環(huan)和(he)(he)靜(jing)(jing)(jing)環(huan)間貼(tie)合性受軸的(de)振動(dong)(dong)(dong)(dong)(dong)和(he)(he)擺(bai)動(dong)(dong)(dong)(dong)(dong)影(ying)響較小。靜(jing)(jing)(jing)環(huan)一般常用(yong)潤滑性好(hao)的(de)軟質材(cai)料(liao)如石墨、填(tian)充聚(ju)四氟乙烯(xi)等,動(dong)(dong)(dong)(dong)(dong)環(huan)多用(yong)硬質合金、陶瓷等材(cai)料(liao)制造。