The invention discloses an oil tank exhaust valve. A first exhaust opening is formed in a valve body, and a valve element part is arranged in the valve body in a sliding manner. A movable sealing part is arranged on the valve element part and provided with a second exhaust opening corresponding to the first exhaust opening. During closing, the valve element part ascends to drive the movable sealing part to ascend and be attached to the top face of a valve element containing cavity, the first exhaust opening is closed, and at the moment, the first exhaust opening communicates with the second exhaust opening; and the valve element part continues to rise and is attached to the second side face of the movable sealing part, the second exhaust opening is closed, and overall closing is completed. When the valve needs to be opened, the flow area of the second exhaust opening is smaller, so that the valve is easier to open under the condition of higher pressure; a valve element sinks, so that the valve element part and a movable sealing piece are torn apart, and the second exhaust opening is opened; and the pressure is further reduced, the valve element continues to sink, the movable sealing part is driven to be separated from the valve element containing cavity, and overall opening is completed. The problem that an existing oil tank exhaust valve cannot be reopened under high pressure is solved.

    本发明公开了一种油箱排气阀,通过在阀体上开设第一排出口,在阀体内滑动设置阀芯部;并在阀芯部上设置活动密封部,活动密封部上设置与第一排出口相对应的第二排出口。关闭时,阀芯部上升,带动活动密封部上升并贴合于阀芯容置腔的顶面,关闭第一排出口,此时第一排出口与第二排出口连通;阀芯部继续上升,贴合于活动密封部的第二侧面,关闭第二排出口,完成整体关闭。当需要打开时,第二排出口的流通面积较小,故在压力较高的情况下更容易开启;阀芯下沉,使得阀芯部与活动密封件撕开,第二排出口开启;压力进一步降低,阀芯继续下沉,带动活动密封部脱离阀芯容置腔,完成整体开启。解决了现有油箱排气阀在高压力下无法重新开启的问题。


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    Title :

    Oil tank exhaust valve


    Additional title:

    一种油箱排气阀


    Contributors:

    Publication date :

    2021-11-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16K VALVES , Ventile / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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