WATER SPRAYING SILENCER APPARATUS

PROBLEM TO BE SOLVED: To provide a water spraying silencer apparatus capable of being installed in a smaller installation space, and being actuated with a simple structure without requiring electrical control. SOLUTION: An injection cylinder 3 is provided in a vapor discharge tube 2, and the injection cylinder including an injection hole 10 for spraying water W supplied from a water injection tube 9. Thrust reception structure 22 is disposed below the injection cylinder 3, which structure is pushed up by receiving thrust of vapor S flowing into the vapor discharge tube 2. Further, a valve 13 is provided in the injection cylinder 3 for opening and closing a supply flow passage 12 extending from the water pouring tube 9 up to each injection hole 10 by making use of up and down motion of itself. A thrust reception structure 22 and the valve 13 are coupled with each other through a valve shaft 17 slidable in the opening and closing direction of and the valve 13 is energized in the direction of closing by making use of pressure of the wafer W supplied from the water pouring tube 9 and self weights of the valve 13, the valve shaft 17, and the thrust reception structure 22. The valve 13 is pushed up in the opening direction against energizing force owing to the thrust of the vapor S acting on the thrust reception structure 22.