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發布(bu)時間:2021-12-21 11:47:02 人氣:100286 來源(yuan):
泰安機械密封件輔助(zhu)密(mi)(mi)封的作用(yong)是防止動(dong)環(huan)和靜環(huan)與壓蓋(gai)之間(jian)的泄漏;補償密(mi)(mi)封面的偏(pian)斜和振動(dong),以保證密(mi)(mi)封面良好的貼(tie)合。這就要求輔助(zhu)密(mi)(mi)封的材料具有一定的彈性(xing)。因此,首選材料應是合成橡膠(jiao)等。
為有(you)效地密(mi)(mi)(mi)封(feng)(feng)(feng),必須(xu)(xu)利用彈(dan)性元(yuan)件(jian)(jian)使密(mi)(mi)(mi)封(feng)(feng)(feng)面保持(chi)接(jie)觸,因此,其中一個輔助密(mi)(mi)(mi)封(feng)(feng)(feng)能產生軸(zhou)向(xiang)位移,以(yi)保持(chi)其密(mi)(mi)(mi)封(feng)(feng)(feng)性能(當采(cai)用波紋管密(mi)(mi)(mi)封(feng)(feng)(feng)時(shi),由于它可(ke)以(yi)作軸(zhou)向(xiang)移動(dong)而(er)無須(xu)(xu)可(ke)動(dong)的輔助密(mi)(mi)(mi)封(feng)(feng)(feng)件(jian)(jian))。輔助密(mi)(mi)(mi)封(feng)(feng)(feng)件(jian)(jian)有(you)多種形狀(zhuang),如(ru)平(ping)墊、O型(xing)(xing)圈(quan)(quan)(quan)、V型(xing)(xing)圈(quan)(quan)(quan)、U型(xing)(xing)圈(quan)(quan)(quan)等,后兩種主(zhu)要適用于滑動(dong)件(jian)(jian)密(mi)(mi)(mi)封(feng)(feng)(feng),O型(xing)(xing)圈(quan)(quan)(quan)既(ji)可(ke)用于滑動(dong)密(mi)(mi)(mi)封(feng)(feng)(feng)也可(ke)用于靜密(mi)(mi)(mi)封(feng)(feng)(feng),平(ping)墊只可(ke)用于靜密(mi)(mi)(mi)封(feng)(feng)(feng)。
常用(yong)(yong)輔助密封材料的(de)使用(yong)(yong)溫度(du)范圍和應用(yong)(yong)場合列在表(biao)1中。