閥(fa)(fa)門(men)填(tian)(tian)(tian)(tian)料(liao)(liao)函(han)(han)又(you)名(ming)填(tian)(tian)(tian)(tian)料(liao)(liao)箱，就是閥(fa)(fa)桿部分的密封裝置，填(tian)(tian)(tian)(tian)料(liao)(liao)函(han)(han)通常在(zai)閥(fa)(fa)蓋上部，防止氣體、液體物(wu)料(liao)(liao)等介質從閥(fa)(fa)桿和閥(fa)(fa)蓋的間(jian)隙(xi)處漏出。填(tian)(tian)(tian)(tian)料(liao)(liao)的材料(liao)(liao)和填(tian)(tian)(tian)(tian)料(liao)(liao)函(han)(han)的結構是保(bao)證閥(fa)(fa)門(men)在(zai)填(tian)(tian)(tian)(tian)料(liao)(liao)函(han)(han)不滲漏的重要條件。

  閥門填(tian)(tian)料函是由填(tian)(tian)料壓(ya)(ya)蓋(gai)、填(tian)(tian)料和(he)(he)填(tian)(tian)料墊等(deng)組成。要求填(tian)(tian)料函結(jie)構簡單、密封可(ke)靠、裝(zhuang)拆方便。填(tian)(tian)料函結(jie)構分為(wei)壓(ya)(ya)緊螺母式、壓(ya)(ya)蓋(gai)式和(he)(he)波紋管式三(san)種。