掃一掃,加微信
聯系客服,馬上詢價
發布時間:2021-06-01 15:10:39 人氣:181617 來源(yuan):川工密封(feng)
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。渣漿泵用頭屯河機械密封的工作原理要求頭屯河機械密封內部無任何雜質,在組裝頭屯河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頭屯河機械密封嚴重(zhong)漏泄。必要(yao)時可以制作工裝在組裝前水壓試驗,檢查動靜環座是否存在影響密封(feng)的(de)缺陷。
渣漿頭屯河泵用頭屯河機械密封由于密封面變形所引起的,而且頭屯河機械密封面泄漏的概率是很高的。如果泵在啟動時就發生頭屯河泵用頭屯河機械密封泄漏,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頭屯河機械密封的變(bian)形(xing)情況。如果(guo)發生變(bian)形(xing),用(yong)平晶檢查密封(feng)面(mian)的干涉帶(dai)的變(bian)化情況,密封(feng)面(mian)變(bian)形(xing)存在于(yu)動環和靜環之間。
壓缸體(ti)(ti)(ti)動(dong)(dong)(dong)態(tai)密(mi)封(feng)系統采用(yong)(yong)的(de)是主(zhu)密(mi)封(feng)設計(ji),一般都用(yong)(yong)U型密(mi)封(feng)圈。液壓缸體(ti)(ti)(ti)的(de)往復式動(dong)(dong)(dong)態(tai)密(mi)封(feng)系統的(de)設計(ji),開始(shi)使用(yong)(yong)了更(geng)加(jia)復雜的(de)U型圈和(he)同軸(zhou)(zhou)密(mi)封(feng)組件的(de)復合(he)式設計(ji)。密(mi)封(feng)的(de)靜(jing)環(huan)(huan)(huan)(huan)(huan)通常(chang)固定在殼體(ti)(ti)(ti)上(shang),動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)通過彈(dan)簧、彈(dan)簧座與軸(zhou)(zhou)一同旋轉。靜(jing)環(huan)(huan)(huan)(huan)(huan)與殼體(ti)(ti)(ti)、動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)與軸(zhou)(zhou)形成(cheng)的(de)間隙(xi)用(yong)(yong)成(cheng)型填(tian)料密(mi)封(feng)。在動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)和(he)靜(jing)環(huan)(huan)(huan)(huan)(huan)接(jie)觸(chu)的(de)端面形成(cheng)相對滑(hua)動(dong)(dong)(dong)面,即動(dong)(dong)(dong)密(mi)封(feng)面。為保證密(mi)封(feng)良好,動(dong)(dong)(dong)密(mi)封(feng)面應十分平直和(he)光潔。彈(dan)簧力和(he)被密(mi)封(feng)的(de)流體(ti)(ti)(ti)壓力使動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)貼(tie)緊靜(jing)環(huan)(huan)(huan)(huan)(huan)。因動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)與軸(zhou)(zhou)通過彈(dan)簧連接(jie),動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)和(he)靜(jing)環(huan)(huan)(huan)(huan)(huan)間貼(tie)合(he)性受(shou)軸(zhou)(zhou)的(de)振動(dong)(dong)(dong)和(he)擺動(dong)(dong)(dong)影(ying)響較小。靜(jing)環(huan)(huan)(huan)(huan)(huan)一般常(chang)用(yong)(yong)潤滑(hua)性好的(de)軟質(zhi)材(cai)(cai)料如石墨、填(tian)充聚四氟乙烯等,動(dong)(dong)(dong)環(huan)(huan)(huan)(huan)(huan)多用(yong)(yong)硬(ying)質(zhi)合(he)金、陶(tao)瓷等材(cai)(cai)料制(zhi)造。