文档介绍：Completed Solution for Engineering Valves 蝶阀结构介绍 Solution for Engineering Valves 一、pleted Solution for Engineering Valves 蝶阀是用圆盘式启闭件往复回转 90度左右来开启、关闭和调节流体通道的一种阀门。 Completed Solution for Engineering Valves 优点结构简单,体积小,重量轻,材料耗用省,安装尺寸小,驱动力矩小,操作简便、迅速,而且还可同时具有良好的流量调节功能和关闭密封特性。 Completed Solution for Engineering Valves 二、pleted Solution for Engineering Valves 蝶阀结构分类?中线蝶阀?单偏心蝶阀?双偏心蝶阀?pleted Solution for Engineering Valves pleted Solution for Engineering Valves 中线蝶阀手柄齿盘阀杆阀体阀瓣阀座轴承 O型圈枢轴?结构特点: 阀板的回转中心位于阀体中心线上,且通过密封面的中心。 Completed Solution for Engineering Valves pleted Solution for Engineering Valves 中线蝶阀?密封原理: 阀板加工时保证其密封面具有合适的表面粗糙度。合成橡胶阀座在模压成形时形成密封面合适的表面粗糙度。阀门关闭时,通过阀板的转动,阀板的外圆密封面挤压合成橡胶阀座,使合成橡胶阀座产生弹性力作为密封比压保证阀门的密封。