The invention discloses a low-leakage breather valve of an oil tank. The valve comprises a valve body, a valve cavity communicated with the oil tank is formed in the valve body, and a liquid accumulation groove with an upward groove opening is formed at the top of the valve body; and the top of the valve body is further provided with a through hole, one end of the through hole penetrates through the bottom of the liquid accumulation groove, and the other end of the through hole communicates with the valve cavity of the valve body. A sealing piece is arranged on the liquid accumulation groove, the through hole penetrates through the sealing piece, and an exhaust hole communicated with the through hole is formed in the sealing piece; a head valve is arranged in the liquid accumulation groove, and the bottom of the head valve is tightly attached to the sealing piece up and down; a base is arranged at the bottom of the valve body, and a plurality of inlets are formed in the base; a movable sealing assembly is arranged on the base in an up-down moving manner; and when oil leakage needs to be prevented, the through hole is sealed in the manner of a floater and the rubber sealing piece, rubber sealing has better sealing performance, meanwhile, when the pressure of the oil tank is reduced, the through hole can be rapidly opened through the assembling manner of the floater and the sealing piece, and therefore the inner pressure of the oil tank is better reduced.

    本发明公开了一种油箱低泄漏呼吸阀,包括阀体,阀体内具有与油箱相通的阀腔,阀体的顶部具有槽口向上的积液槽;阀体的顶部还具有通孔,通孔一端贯通所述积液槽的底部,另一端连通所述阀体的阀腔;密封件设置在所述积液槽上,且通孔贯穿密封件,密封件上开有与通孔相通的排气孔;头阀设置在所述积液槽内,且头阀底部与密封件上下紧密贴合;底座设置在阀体的底部,底座上设有多个进口;活动密封组件可上下移动的设置在底座上;本发明当需要阻止油液泄漏时,采用浮子与橡胶密封片的方式对通孔进行密封,橡胶密封有更佳的密封性能,同时在油箱压力降低时,浮子与密封片组装的形式能够迅速打开通孔,从而起到更好的降低油箱内部压力。


    Access

    Download


    Export, share and cite



    Title :

    Low-leakage breather valve of oil tank


    Additional title:

    一种油箱低泄漏呼吸阀


    Contributors:
    XU JING (author)

    Publication date :

    2021-12-24


    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



    Integrated breather valve and aircraft fuel tank

    YIN YANBIN / NING SHENZHENG / GAN FAJIN | European Patent Office | 2023

    Free access

    BREATHER VALVE

    LEE CHANG-HOON / ROH EUI-DONG / KIM JUNG-TAE et al. | European Patent Office | 2021

    Free access

    Breather valve

    LEE CHANG-HOON / ROH EUI-DONG / KIM JUNG-TAE et al. | European Patent Office | 2022

    Free access

    Breather valve, fuel tank pressure adjusting method and automobile

    LIU TANG / WANG WEI / ZHOU CHUNYUN et al. | European Patent Office | 2024

    Free access

    Breather check valve

    WORKMAN JEFFREY D | European Patent Office | 2018

    Free access