Cover of barreled water barrel

The utility model provides a cover of barreled water barrel, including surrounding at the outside enclosing cover and the rivers passageway of connection at the enclosing cover center of bung hole, the rivers passageway is including the passageway inner wall and the channel outer wall of laminating each other, passageway inner wall top is equipped with the protruding domed roof of evagination, the passageway inner wall is made by elastic material with protruding domed roof, all be equipped with the through -hole that supplies water and flow through on passageway inner wall and the channel outer wall, the through -hole on the passageway inner wall staggers with the through -hole on the channel outer wall each other. Put the bottled water on the water dispenser, water conservancy diversion capital blistering domed roof, the passageway inner wall warp, and with the channel outer wall separation, water gets into the water dispenser from the through -hole. When needs traded barrel, the cask rose, water conservancy