JPH0350657U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例を示す空気弁付地上
式消火栓の断面正面図、第２図は他の実施例を示
す空気弁付地上式消火栓の断面正面図、第３図は
従来の空気弁付地下式消火栓の一例を示す断面正
面図である。 ３１……消火栓弁箱、３２……送入口、３４…
…水道本管、３５……送出口、３６……放水管、
３７……弁座、３８……弁体、３９……弁棒、４
０……空気弁弁箱、４１……通気孔、４２……空
気弁弁座、４４……フロート、４５……空気弁弁
体、４７……放水管キヤツプ、５０……放水口。 Fig. 1 is a cross-sectional front view of an above-ground fire hydrant with an air valve showing one embodiment of the present invention, Fig. 2 is a cross-sectional front view of an above-ground fire hydrant with an air valve showing another embodiment, and Fig. 3 is a conventional FIG. 2 is a cross-sectional front view showing an example of an underground fire hydrant with an air valve. 31... Fire hydrant valve box, 32... Inlet port, 34...
...Water main, 35...Outlet, 36...Water pipe,
37... Valve seat, 38... Valve body, 39... Valve stem, 4
0...Air valve box, 41...Vent hole, 42...Air valve seat, 44...Float, 45...Air valve body, 47...Water pipe cap, 50...Water outlet.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 消火栓弁箱の送入口を水道本管に、送出口を放
水管に夫々連通し、該消火栓弁箱内の弁座に着座
する弁体を前記放水管上部から操作する弁棒を備
えた消火栓において、前記弁棒を中空に形成し、
該弁棒の下部を前記弁体に貫通せしめてその下端
を前記送入口へ開口し、また前記弁棒の上部を前
記放水管の頂壁に貫通せしめてその上端に空気弁
弁箱を支持し、該空気弁弁箱は、底壁に前記弁棒
の上端が開口し、内部にフロートによつて昇降す
る空気弁弁体を配設し、上壁に該空気弁弁体が着
座する空気弁弁座及び前記空気弁弁体によつて開
閉する通気孔を形成したことを特徴とする空気弁
付消火栓。 In a fire hydrant, the inlet of the fire hydrant valve box is connected to the water main, the outlet is connected to the water discharge pipe, and the fire hydrant is equipped with a valve stem that operates a valve element seated on a valve seat in the fire hydrant valve box from the upper part of the water discharge pipe. , the valve stem is formed hollow;
A lower part of the valve stem is passed through the valve body so that the lower end thereof is opened to the inlet port, and an upper part of the valve stem is passed through the top wall of the water discharge pipe, and an air valve box is supported at the upper end thereof. , the air valve valve box has an upper end of the valve rod opening at the bottom wall, an air valve body disposed therein that is raised and lowered by a float, and the air valve body is seated on the upper wall. A fire hydrant with an air valve, characterized in that a vent is formed which is opened and closed by a valve seat and the air valve body.