JPS59113567U

JPS59113567U - Backflow prevention valve for cold regions

Info

Publication number: JPS59113567U
Application number: JP773483U
Authority: JP
Inventors: 紀生小泉
Original assignee: 株式会社光合金製作所
Priority date: 1983-01-21
Filing date: 1983-01-21
Publication date: 1984-07-31
Also published as: JPH018604Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す、停止状態における縦
断面図であり、第２図は第１図における弁体の斜視図で
あり、第３図は本考案の他の実施例を示す縦断面図であ
り、第４図は本考案のもう一つの実施例を示す要部縦断
面図である。１・・・・・・弁本体、２・・・・・・流入口、３・・
・・・・流出口、５・・・・・・逆止面、８・・・・・
・排水口、９・・・・・・密封面、１０・・・・・・プ
ラグ、１１・・・・・・弁体、１２・・・・・・逆止パ
ツキン、１３・・・・・・逆止部、１４・・・・・・ガ
イド部、１５・・・・・・バネ係止部、１６・・・・・
・支持腕、１７・・・・・・バネ、１８・・・・・・排
水弁、１９・・・・・・斜面、２０・・・・・・押圧部
、２１・・・・・・止水部、２２．２３・・・・・・止
水パツキン、２４・・・・・・連通孔。FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention in a stopped state, FIG. 2 is a perspective view of the valve body in FIG. 1, and FIG. 3 is a diagram showing another embodiment of the present invention. FIG. 4 is a longitudinal sectional view of a main part showing another embodiment of the present invention. 1...Valve body, 2...Inflow port, 3...
...Outlet, 5...Reverse stop, 8...
・Drain port, 9...Sealing surface, 10...Plug, 11...Valve body, 12...Check gasket, 13...・Return check part, 14...Guide part, 15...Spring locking part, 16...
・Support arm, 17... Spring, 18... Drain valve, 19... Slope, 20... Pressing part, 21... Stop Water part, 22.23...Water stop gasket, 24...Communication hole.

Claims

[Scope of utility model registration request]

The valve body has an inlet and an outlet on the same axis, a drain on the side of the middle part, and a check surface adjacent to the inlet, and a valve body that comes into close contact with and separates from the check surface. The valve body is connected by a supporting arm between the check part to which the check packing is attached, the guide part provided on the downstream side of the check part, and the spring locking part adjacent to the guide part, and the valve element is constantly pressed in the direction of the inlet by the spring. Then, the valve body is moved by pressing the spring locking part from the side, and the inflow port and the outflow port are connected to each other, and in order to open both to the atmosphere, the valve body is moved to the drain port and then to the gap between the support arms. A backflow prevention valve for use in cold regions, comprising a pressing part whose tip protrudes, and a drain valve having a water stop part having a communication hole therein on the downstream side thereof.