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聯系客服,馬上詢價
發布時間:2021-12-20 15:24:47 人氣:98712 來(lai)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。渣漿伽師泵用伽師機械密封的工作原理要求伽師機械密封內部無任何雜質,在組裝伽師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伽師機械密封嚴重漏泄。必要時可以(yi)制作工(gong)裝在(zai)組裝前水壓(ya)試驗,檢查動(dong)靜環座是否存在(zai)影響密封的(de)缺陷(xian)。
渣漿伽師泵用伽師機械密封由于密封面變形所引起的,而且伽師機械密封面泄漏的概率是很高的。如果泵在啟動時就發生伽師泵用伽師機械密封泄漏,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伽師機械密封的(de)變(bian)形情況(kuang)。如果(guo)發生變(bian)形,用平晶檢查密封(feng)面(mian)的(de)干涉帶的(de)變(bian)化情況(kuang),密封(feng)面(mian)變(bian)形存在于動環(huan)和靜環(huan)之間(jian)。
壓(ya)缸體(ti)動(dong)(dong)(dong)態密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)系(xi)統(tong)采用的(de)(de)是(shi)主(zhu)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)設計,一(yi)般都用U型密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)圈(quan)。液(ye)壓(ya)缸體(ti)的(de)(de)往復(fu)(fu)式(shi)動(dong)(dong)(dong)態密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)系(xi)統(tong)的(de)(de)設計,開始使(shi)(shi)用了(le)更加復(fu)(fu)雜的(de)(de)U型圈(quan)和(he)同(tong)軸(zhou)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)組件(jian)的(de)(de)復(fu)(fu)合式(shi)設計。密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)的(de)(de)靜(jing)環(huan)(huan)(huan)通常固定(ding)在殼體(ti)上,動(dong)(dong)(dong)環(huan)(huan)(huan)通過彈簧(huang)、彈簧(huang)座(zuo)與(yu)軸(zhou)一(yi)同(tong)旋轉。靜(jing)環(huan)(huan)(huan)與(yu)殼體(ti)、動(dong)(dong)(dong)環(huan)(huan)(huan)與(yu)軸(zhou)形成的(de)(de)間(jian)隙用成型填料(liao)(liao)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)。在動(dong)(dong)(dong)環(huan)(huan)(huan)和(he)靜(jing)環(huan)(huan)(huan)接(jie)觸(chu)的(de)(de)端面(mian)(mian)形成相對滑(hua)動(dong)(dong)(dong)面(mian)(mian),即(ji)動(dong)(dong)(dong)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)面(mian)(mian)。為保證密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)良好(hao),動(dong)(dong)(dong)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)面(mian)(mian)應十分平直和(he)光潔。彈簧(huang)力(li)和(he)被(bei)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)的(de)(de)流(liu)體(ti)壓(ya)力(li)使(shi)(shi)動(dong)(dong)(dong)環(huan)(huan)(huan)貼(tie)(tie)緊靜(jing)環(huan)(huan)(huan)。因動(dong)(dong)(dong)環(huan)(huan)(huan)與(yu)軸(zhou)通過彈簧(huang)連接(jie),動(dong)(dong)(dong)環(huan)(huan)(huan)和(he)靜(jing)環(huan)(huan)(huan)間(jian)貼(tie)(tie)合性受軸(zhou)的(de)(de)振(zhen)動(dong)(dong)(dong)和(he)擺動(dong)(dong)(dong)影(ying)響較小(xiao)。靜(jing)環(huan)(huan)(huan)一(yi)般常用潤滑(hua)性好(hao)的(de)(de)軟質材料(liao)(liao)如石墨、填充聚四氟乙(yi)烯等,動(dong)(dong)(dong)環(huan)(huan)(huan)多用硬質合金、陶瓷(ci)等材料(liao)(liao)制造。