Abstract:
PROBLEM TO BE SOLVED: To provide a mounting structure capable of rigidly fixing an annular water shut off spring to an outlet closing member so as to evenly sprinkle water at the sprinkler head. SOLUTION: A spring holder 8d of a large diameter is provided on a spring holding prong 8a of the outlet closing member 8 of the sprinkler head. Cutting the upper surface of the shoulder 8e of the spring holder 8d downwardly with a fixing tool 12 in the state that the annular water shut off spring 11 is fitted into the spring holder 8d allows the periphery of the upper end 8d' of the spring holder 8d to be outwardly bent. Holding the inner periphery 11a of the annular water shut off spring 11 tightly in a caulked state with the outwardly bent upper end 8d' of the spring holder 8d and the upper surface 8c" of the outlet closing member 8 allows the annular water shut off spring 11 to be fixed on the spring holder 8d. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a water flow detector of simple structure for a fire extinguishing facility capable of reducing size. SOLUTION: A paddle 20 turnable by a water flow is supported in an outer position of a peripheral edge of a valve element 16, inside a secondary side valve chest in a check valve casing 11a, the paddle 20 is arranged to bring a turning end 20' thereof into a position of approaching a side edge of the valve element 16, without overlapping a paddle face thereof with the valve element 16, a switch operation member 20a' is provided in an opposite side of the turning end 20' of the paddle 20, a water flow detecting switch 22 is provided to be driven by the switch operation member 20a', and the water flow detecting switch 22 is driven by a motion of the switch operation member 20a' based on the turning of the paddle 20. COPYRIGHT: (C)2007,JPO&INPIT