The invention provides a pressure valve for a fuel tank. The pressure valve comprises a main shell, the main shell comprises a first containing cavity and a second containing cavity, the first containing cavity communicates with the second containing cavity through a channel, and a bottom cover for sealing the bottom of the first containing cavity is arranged at the bottom of the first containingcavity; a floating valve element is arranged in the first containing cavity, a spring elastically pressing the floating valve element in a bias mode is arranged between the floating valve element andthe bottom cover, and a flow guide nozzle communicating with the interior of the second containing cavity is arranged on one side of the second containing cavity; and a sealing base is arranged in thesecond containing cavity, and a sealing plug block is arranged on the sealing base. According to the pressure valve for the fuel tank, through the sealing base and the sealing plug block which are arranged in the second containing cavity, backflow gas at the flow guide nozzle can be prevented from entering the fuel tank.
本发明提供了燃料箱用压力阀,包括主壳体,所述主壳体包括第一容腔和第二容腔,所述第一容腔和所述第二容腔之间通过通道连通,在所述第一容腔的底部设置有密封所述第一容腔该底部的底盖;在所述第一容腔内设置浮动阀芯,且在浮动阀芯和底盖之间设置的弹性偏压所述浮动阀芯的弹簧,在所述第二容腔的一侧设置有于其内部连通的导流嘴;在所述第二容腔内设置有密封座,在所述密封座上设置有密封堵块。本发明的燃料箱用压力阀通过第二容腔内设置的密封座和密封堵块,使得可以防止从导流嘴处的回流气体进入至燃油箱内。
Pressure valve for fuel tank
燃料箱用压力阀
2020-12-25
Patent
Electronic Resource
Chinese
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 / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF |