JPS6447694U

JPS6447694U -

Info

Publication number: JPS6447694U
Application number: JP14066787U
Authority: JP
Priority date: 1987-09-14
Filing date: 1987-09-14
Publication date: 1989-03-23

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例の平面図、第２図
は四方弁の断面図であり、ａは平常時パターン、
ｂは非常時パターンを夫々示している。第３図は
第１図の断面図、第４図は第２実施例の説明図、
第５図は従来例の平面図である。１……給水主管、１ａ……上流主管、１ｂ……
下流主管、２ａ……入側バイパス管、２ｂ……出
側バイパス管、３……貯水タンク本体、６……四
方弁（入口と出口を夫々二つ備えた弁）、８……
スプール弁（入口と出口を夫々二つ備えた弁）。 Fig. 1 is a plan view of the first embodiment of the present invention, Fig. 2 is a cross-sectional view of the four-way valve, a is a normal pattern,
b shows each emergency pattern. FIG. 3 is a sectional view of FIG. 1, FIG. 4 is an explanatory diagram of the second embodiment,
FIG. 5 is a plan view of a conventional example. 1...Water supply main pipe, 1a...Upstream main pipe, 1b...
Downstream main pipe, 2a...Inlet bypass pipe, 2b...Outlet bypass pipe, 3...Water tank body, 6...Four-way valve (valve with two inlets and two outlets), 8...
Spool valve (valve with two inlets and two outlets).

Claims

[Scope of utility model registration request]

In the middle of the main water supply pipe, an inlet bypass pipe connected to the inlet side of the water storage tank body and an outlet bypass pipe connected to the outlet side of the water storage tank body are branched, and the upstream side of this branch is The main water supply pipe is the upstream main pipe, and the one on the downstream side is the downstream main pipe, and at the branch part, there is an emergency pattern in which both the upstream and downstream main pipes and both the bypass pipes on the inlet and outlet sides are individually communicated, and the upstream main pipe and the inlet side are connected. A drinking water storage tank characterized by being provided with a valve having two inlets and two outlets, which can be switched between a normal pattern in which bypass pipes communicate with each other and a downstream main pipe and an outlet bypass pipe individually.