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發布時間:2021-12-21 11:47:02 人(ren)氣(qi):100388 來源:
孝昌機械密封件輔助(zhu)密封的作用是防(fang)止動環和靜環與(yu)壓蓋之間的泄漏(lou);補償密封面(mian)的偏斜和振(zhen)動,以保證密封面(mian)良好(hao)的貼(tie)合(he)。這就要(yao)求輔助(zhu)密封的材料具有(you)一定的彈性。因此,首選材料應是合(he)成橡膠等。
為有效地密(mi)(mi)(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng),必(bi)須利用(yong)彈性元件使(shi)密(mi)(mi)(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)面保持(chi)接(jie)觸,因此,其中一個輔(fu)助(zhu)密(mi)(mi)(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)能(neng)產生軸(zhou)向(xiang)位移,以(yi)保持(chi)其密(mi)(mi)(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)性能(neng)(當(dang)采用(yong)波紋管密(mi)(mi)(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)時(shi),由(you)于(yu)它可(ke)以(yi)作軸(zhou)向(xiang)移動而(er)無須可(ke)動的輔(fu)助(zhu)密(mi)(mi)(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)件)。輔(fu)助(zhu)密(mi)(mi)(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)件有多種形狀,如平墊(dian)(dian)、O型(xing)(xing)圈、V型(xing)(xing)圈、U型(xing)(xing)圈等,后兩種主要適用(yong)于(yu)滑動件密(mi)(mi)(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng),O型(xing)(xing)圈既可(ke)用(yong)于(yu)滑動密(mi)(mi)(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)也可(ke)用(yong)于(yu)靜密(mi)(mi)(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng),平墊(dian)(dian)只可(ke)用(yong)于(yu)靜密(mi)(mi)(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)。
常用輔(fu)助(zhu)密封材料(liao)的使用溫度范(fan)圍和應用場合列(lie)在表1中。