The invention discloses a vacuum stop valve used for a railway vehicle toilet, and relates to the technical field of water feeding and draining sanitary equipment of railway vehicles. The vacuum stop valve comprises a valve deck, a valve body, a packing cup, a bent clamp, a gland and a duckbill rubber part, wherein the upper end, the lower end and one side of the valve body are all provided with openings and mutually communicated; the gland is connected with the upper end of the valve body through bolts; the packing cup is connected with the opening in the lateral surface of the valve body, and the valve deck is installed on the packing cup; the valve deck and the packing cup are connected in a clamped mode and fastened through the bent clamp; the duckbill rubber part is arranged in the valve body and communicated with the opening in the upper end of the valve body. Sewage can be smoothly drained when the vehicle is static to meet the requirement of operation of the railway vehicle. When the vehicle moves at high speed and generates negative pressure, air can be effectively prevented from entering the railway vehicle toilet. Meanwhile, the product is simple in structure, reasonable in layout and easy to mount and dismount and facilitates maintenance in the later period.


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    Title :

    Vacuum stop valve used for railway vehicle toilet


    Contributors:

    Publication date :

    2016-01-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16K VALVES , Ventile / B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES



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