掃一掃,加微信
聯系客服,馬上詢價
發布時間:2021-12-20 15:24:47 人氣(qi):98815 來源(yuan):
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。渣漿三角鎮泵用三角鎮機械密封的工作原理要求三角鎮機械密封內部無任何雜質,在組裝三角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三角鎮機械密封嚴重漏泄(xie)。必要時可以制作(zuo)工裝(zhuang)在組裝(zhuang)前水壓試驗,檢查動(dong)靜環(huan)座是否存在影響密(mi)封的缺陷(xian)。
渣漿三角鎮泵用三角鎮機械密封由于密封面變形所引起的,而且三角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三角鎮泵用三角鎮機械密封泄漏,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三角鎮機械密封的(de)變形情況。如(ru)果發生變形,用平晶檢查密封面的(de)干(gan)涉帶的(de)變化情況,密封面變形存在于動環(huan)和靜環(huan)之間。
壓缸(gang)體(ti)(ti)(ti)動(dong)(dong)(dong)(dong)態密(mi)(mi)封系(xi)統采(cai)用(yong)(yong)的(de)是主密(mi)(mi)封設計(ji),一般都(dou)用(yong)(yong)U型(xing)(xing)密(mi)(mi)封圈。液(ye)壓缸(gang)體(ti)(ti)(ti)的(de)往復式動(dong)(dong)(dong)(dong)態密(mi)(mi)封系(xi)統的(de)設計(ji),開始使用(yong)(yong)了更加(jia)復雜(za)的(de)U型(xing)(xing)圈和(he)同軸(zhou)密(mi)(mi)封組件的(de)復合式設計(ji)。密(mi)(mi)封的(de)靜(jing)(jing)環(huan)(huan)(huan)通(tong)常固定(ding)在(zai)殼體(ti)(ti)(ti)上,動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)通(tong)過彈簧(huang)、彈簧(huang)座與(yu)軸(zhou)一同旋轉。靜(jing)(jing)環(huan)(huan)(huan)與(yu)殼體(ti)(ti)(ti)、動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)與(yu)軸(zhou)形(xing)成(cheng)的(de)間(jian)隙用(yong)(yong)成(cheng)型(xing)(xing)填(tian)料(liao)密(mi)(mi)封。在(zai)動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)和(he)靜(jing)(jing)環(huan)(huan)(huan)接觸的(de)端面(mian)形(xing)成(cheng)相對滑動(dong)(dong)(dong)(dong)面(mian),即動(dong)(dong)(dong)(dong)密(mi)(mi)封面(mian)。為保證密(mi)(mi)封良好(hao),動(dong)(dong)(dong)(dong)密(mi)(mi)封面(mian)應十(shi)分(fen)平直和(he)光潔。彈簧(huang)力(li)和(he)被密(mi)(mi)封的(de)流體(ti)(ti)(ti)壓力(li)使動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)貼緊(jin)靜(jing)(jing)環(huan)(huan)(huan)。因動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)與(yu)軸(zhou)通(tong)過彈簧(huang)連接,動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)和(he)靜(jing)(jing)環(huan)(huan)(huan)間(jian)貼合性受軸(zhou)的(de)振動(dong)(dong)(dong)(dong)和(he)擺動(dong)(dong)(dong)(dong)影響(xiang)較小(xiao)。靜(jing)(jing)環(huan)(huan)(huan)一般常用(yong)(yong)潤滑性好(hao)的(de)軟質材料(liao)如石(shi)墨、填(tian)充聚(ju)四氟乙(yi)烯等,動(dong)(dong)(dong)(dong)環(huan)(huan)(huan)多用(yong)(yong)硬質合金(jin)、陶瓷等材料(liao)制造(zao)。