The invention discloses a sealing structure of a valve body and a valve. Switching and sealing of exhaust channels in the valve body are achieved through the sealing mode. A sealing part located between a large valve element and the top face of an inner cavity of the valve body is arranged in the inner cavity of the valve body. When a large discharge port needs to be closed, the large valve element moves to a closing position and closes the large discharge port in combination with the sealing part, and a first communication channel communicating with a small discharge port is formed; and whenthe small discharge port needs to be further closed, a small valve element rises to seal the first communication channel, and then the small discharge port can be closed. The two valve elements can open or close the two discharge ports respectively only through one sealing part, and the problem that sealing parts of an existing combination valve need to be arranged independently for the two valveelements is solved.
本发明公开了一种阀体的密封结构及阀,通过这种密封方式以实现阀体内排气通道的切换以及密封。通过在阀体内腔内设置一位于大阀芯与阀体内腔顶面之间的密封部;当需要关闭大排出口时,大阀芯移动至关闭位置,并配合密封部关闭大排出口,并形成连通小排出口的第一连通通道;当需要进一步关闭小排出口时,通过小阀芯升起对第一连通通道进行密封即可实现对小排出口的关闭。仅需一个密封部即可实现两个阀芯分别对两个排出口的打开和关闭,解决了现有组合阀的密封部件需分别针对两个阀芯单独设置的问题。
Sealing structure of valve body and valve
一种阀体的密封结构及阀
2021-02-09
Patent
Electronic Resource
Chinese
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