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聯系客服,馬上詢價
發布時(shi)間:2021-12-20 15:24:47 人氣:98785 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。渣漿開遠泵用開遠機械密封的工作原理要求開遠機械密封內部無任何雜質,在組裝開遠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開遠機械密封嚴重漏泄(xie)。必要時可以制作工裝(zhuang)在組裝(zhuang)前(qian)水壓試驗,檢查(cha)動(dong)靜環座是否存在影響密封的缺陷。
渣漿開遠泵用開遠機械密封由于密封面變形所引起的,而且開遠機械密封面泄漏的概率是很高的。如果泵在啟動時就發生開遠泵用開遠機械密封泄漏,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開遠機械密封的(de)變(bian)形情(qing)況。如果發生變(bian)形,用(yong)平晶(jing)檢查密封面的(de)干涉帶(dai)的(de)變(bian)化情(qing)況,密封面變(bian)形存在于動環和(he)靜(jing)環之間。
壓缸(gang)體(ti)動(dong)(dong)態密(mi)封(feng)(feng)(feng)系統(tong)采用(yong)(yong)的(de)(de)(de)(de)是主密(mi)封(feng)(feng)(feng)設(she)計,一般(ban)都用(yong)(yong)U型(xing)密(mi)封(feng)(feng)(feng)圈。液壓缸(gang)體(ti)的(de)(de)(de)(de)往(wang)復式(shi)動(dong)(dong)態密(mi)封(feng)(feng)(feng)系統(tong)的(de)(de)(de)(de)設(she)計,開始使用(yong)(yong)了更加復雜的(de)(de)(de)(de)U型(xing)圈和(he)(he)同軸密(mi)封(feng)(feng)(feng)組件(jian)的(de)(de)(de)(de)復合式(shi)設(she)計。密(mi)封(feng)(feng)(feng)的(de)(de)(de)(de)靜(jing)(jing)(jing)環(huan)(huan)(huan)通(tong)常(chang)固定在(zai)(zai)殼體(ti)上(shang),動(dong)(dong)環(huan)(huan)(huan)通(tong)過(guo)彈(dan)(dan)簧(huang)、彈(dan)(dan)簧(huang)座與(yu)軸一同旋轉。靜(jing)(jing)(jing)環(huan)(huan)(huan)與(yu)殼體(ti)、動(dong)(dong)環(huan)(huan)(huan)與(yu)軸形成的(de)(de)(de)(de)間(jian)隙用(yong)(yong)成型(xing)填(tian)料密(mi)封(feng)(feng)(feng)。在(zai)(zai)動(dong)(dong)環(huan)(huan)(huan)和(he)(he)靜(jing)(jing)(jing)環(huan)(huan)(huan)接觸(chu)的(de)(de)(de)(de)端面(mian)形成相對滑動(dong)(dong)面(mian),即(ji)動(dong)(dong)密(mi)封(feng)(feng)(feng)面(mian)。為保證密(mi)封(feng)(feng)(feng)良(liang)好,動(dong)(dong)密(mi)封(feng)(feng)(feng)面(mian)應十分平直和(he)(he)光潔。彈(dan)(dan)簧(huang)力和(he)(he)被密(mi)封(feng)(feng)(feng)的(de)(de)(de)(de)流體(ti)壓力使動(dong)(dong)環(huan)(huan)(huan)貼(tie)緊靜(jing)(jing)(jing)環(huan)(huan)(huan)。因動(dong)(dong)環(huan)(huan)(huan)與(yu)軸通(tong)過(guo)彈(dan)(dan)簧(huang)連(lian)接,動(dong)(dong)環(huan)(huan)(huan)和(he)(he)靜(jing)(jing)(jing)環(huan)(huan)(huan)間(jian)貼(tie)合性受軸的(de)(de)(de)(de)振動(dong)(dong)和(he)(he)擺動(dong)(dong)影響較小。靜(jing)(jing)(jing)環(huan)(huan)(huan)一般(ban)常(chang)用(yong)(yong)潤滑性好的(de)(de)(de)(de)軟質(zhi)材(cai)料如(ru)石墨、填(tian)充聚四氟乙烯等,動(dong)(dong)環(huan)(huan)(huan)多(duo)用(yong)(yong)硬質(zhi)合金、陶瓷等材(cai)料制(zhi)造。