JPH1147302A - Cross valve with fire hydrant mouthpiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cross valve with fire hydrant mouthpiece which attains the simplification and miniaturization of structure and constituting a fire hydrant equipment with an air valve improving stability with respect to the horizontal rocking such as an earthquake. SOLUTION: A cross ball-valve 7 is constituted to allow the inlet 8A to communicate with the outlet 8B of a valve box 8 through a first valve hole 9A at the time of holding a boll-state valve 9 in a first switching posture by the switching operation of a switching operation handle 11 and to allow the inlet 8A to communicate with the auxiliary discharging port 8C of the valve box 8 through a second valve hole 9B at the time of holding the ball-state valve 9 in a second switching posture by the switching operation of the handle 11, and the fire hydrant mouthpiece 6A is fixed to the port 9C of the valve 7. The inlet 8A of the box 8 at the valve 7 is connected to the side of water- works piping 1 and the inlet of an air valve 5 is connected to the outlet 8B of the box 8 to constitute the fire hydrant equipment with the air valve.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a three-way valve with a fire hydrant cap.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, an air in which a repair valve 4, an air valve 5, a fire hydrant 6 and the like are attached to a water pipe 1 buried underground through a T-tube 2 and a short pipe 3. Fire hydrant equipment with a valve is known.

In such a fire hydrant facility with an air valve, the air in the water supply pipe 1 can be automatically exhausted by the air valve 5 and a fire extinguisher 6 base 6A is connected to a fire extinguishing hose base when a fire occurs. By doing so, fire fighting activities can be performed. Further, by closing the repair valve 4, maintenance of the air valve 5, the fire hydrant 6, and the like becomes possible.

However, in the conventional fire hydrant equipment with an air valve, a repair valve 4 and an air valve 5 are provided above the T-tube 2 and the short pipe 3.
In addition, since at least three parts of the hydrant 6 are integrally connected and supported, the structure is complicated, and the repair valve 4 and the air valve 5 located above the T-tube 2 and the short tube 3 are combined.
The three parts such as the fire hydrant 6 and the like have a comparatively large volume and weight, so that they have a somewhat unstable difficulty against a roll such as an earthquake.

[0005]

That is, in the conventional fire hydrant equipment with an air valve, at least the three parts of the repair valve, the air valve and the fire hydrant, which are relatively large in volume and weight, are integrally connected and supported at the upper part of the vertical pipe. Therefore, it is large and complicated in structure, and has unstable points against rolls such as earthquakes.

Accordingly, the present invention is to provide a three-way valve with a fire hydrant base that can achieve simplification of the structure and downsizing, and can constitute a fire hydrant equipment with an air valve with improved stability against rolls such as earthquakes. The purpose is.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a valve box, a valve body operably housed in the valve box, and the valve box attached to the valve body. A switching operation unit for switching the valve element from outside of the valve body, and the valve box is provided with an inlet and an outlet spaced apart on both sides in the axial direction, and intersects the axis between the inlet and the outlet. An auxiliary discharge port is provided on the axis, and the valve body is provided with a first valve hole for communicating the inlet and the outlet when the valve body is held in the first switching posture by the switching operation of the switching operation unit,
And a three-way valve provided with a second valve hole for communicating the inlet and the auxiliary outlet when held in the second switching posture by the switching operation of the switching operation part, wherein the fire extinguisher cap is provided at the auxiliary outlet. Is provided.

According to the present invention, the three-way valve is connected to the water supply pipe while the inlet of the valve box of the three-way valve communicates with the water supply pipe side, and the air valve is connected to the outlet of the valve box of the three-way valve. This makes it possible to configure a fire hydrant facility with an air valve. By holding the valve body in the first switching position by the switching operation of the switching operation unit and communicating the inlet and the outlet of the valve box with the first valve hole, the air in the water supply pipe is automatically changed by the air valve. A normal use state of exhausting is obtained. In the event of a fire, connect the fire hose cap to the fire hydrant cap provided at the auxiliary outlet of the valve box. After that, the valve body is held in the second switching posture by the switching operation of the switching operation unit, and the inlet of the valve box and the auxiliary discharge port are communicated by the second valve hole, so that the fire extinguishing activity can be performed. . On the other hand, one three-way valve provided with a fire hydrant base at the auxiliary discharge port can perform the functions of the two parts of the conventional repair valve and fire hydrant.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a normal state according to an embodiment of the present invention in partial cross section. Note that the same or corresponding parts as those of the conventional example of FIG. In FIG. 1, reference numeral 7 denotes a three-way valve, which is constituted by a three-way ball valve. The three-way ball valve 7 includes a valve box 8, a ball-shaped valve element 9 operatively housed in the valve box 8, and a valve shaft 9 attached to the valve element 9 from outside the valve box 8. A switching operation handle 11 for switching the valve body 9 between two different postures, which will be described later, is provided.

The axis C1 of the valve box 8 is vertically oriented,
An inlet 8A is provided to be open below the axis C1.
An outlet 8B is provided on the upper side on the axis C1 so as to open. An auxiliary outlet 8C is provided on a horizontal axis C2 perpendicular to the axis C1 between the inlet 8A and the outlet 8B, and a fire hydrant cap 6A is provided at the auxiliary outlet 8C.

The ball-shaped valve body 9 has a first valve hole 9A for communicating the inlet 8A and the outlet 8B when the switching operation of the switching operation handle 11 is maintained in the first switching position shown in FIG. And a switching operation handle 1
A second valve hole 9B is provided for communicating the inlet 8A and the auxiliary discharge port 8C when the second switching posture shown in FIG. 2 is maintained by the first switching operation. That is, the first valve hole 9A
Is constituted by one through-hole penetrating the ball-shaped valve element 9 in a straight line, and the second valve hole 9B is formed by a portion of the first valve hole 9A up to a longitudinal middle point and a first valve hole from the middle point. 9
And a lateral hole that is continuous with A and opens on one side.

Since the three-way ball valve 7 is constructed as described above, as shown in FIGS. 1 and 2, a valve box 8 is provided at the outlet at the upper end of the T-tube 2 connected to the underground water supply pipe 1.
The three-way valve 7 is attached to the water supply pipe 1 via the T-tube 2 and the lower end inlet of the air valve 5 is connected to the outlet 8B of the valve box 8 to connect the three-way ball valve 7 By attaching the air valve 5 to the upper part of the fire hydrant equipment with the air valve can be configured.

In the above configuration, the switching operation of the switching operation handle 11, as shown in FIG. 1, holds the valve body 9 in the first switching position, and connects the inlet 8A and the outlet 8B of the valve box 8 to the first.
By communicating with the valve hole 9A, a normal use state in which the air in the water supply pipe 1 is automatically exhausted by the air valve 5 can be obtained.

On the other hand, when a fire occurs, a fire extinguishing hose base (not shown) is connected to a fire hydrant base 6A provided at an auxiliary discharge port 9C of the valve box 8. After that, the switching operation handle 11
2, the valve body 9 is held in the second switching position, and the inlet 8A and the auxiliary discharge port 8C of the valve box 8 are held as shown in FIG.
The fire extinguishing activity can be performed by communicating the above with the second valve hole 9B.

As described above, the function of the two parts of the conventional repair valve 4 and the fire hydrant 6 is exhibited by one three-way ball valve 7 having the fire hydrant cap 6A provided at the auxiliary discharge port 8C.
The number of parts of the fire hydrant equipment with the air valve can be reduced, the structure can be simplified, and downsizing can be achieved by reducing the volume and weight, so that the stability against rolls such as earthquakes can be increased.

In the above embodiment, the three-way valve 7 constituted by a ball valve is used. However, the three-way valve 7 is provided by a spool valve having the above-described first and second valve holes in the valve body. The three-way valve 7 is used to rotate the valve body around the axis of the valve body by the switching operation of the switching operation handle, and to maintain the first switching posture, so that the inlet of the valve box is opened. The first valve hole communicates with the first valve hole to obtain a normal use state, and in the event of a fire, the valve body is rotated around the axis of the valve body by the switching operation of the switching operation handle, so that the second operation is performed.
By maintaining the switching position, the fire extinguishing activity can be performed by connecting the inlet of the valve box and the auxiliary discharge port with the second valve hole.

[0017]

As described above, according to the present invention, the function of two parts of the conventional repair valve and fire hydrant can be exhibited by one three-way valve provided with the fire hydrant base at the auxiliary discharge port. Since the number of parts of the hydrant equipment with a valve can be reduced, the structure can be simplified, and downsizing can be achieved by reducing the volume and weight, so that stability against rolls such as earthquakes can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a normal state according to an embodiment of the present invention in a partial cross section.

FIG. 2 is a front view showing a state of a fire extinguishing activity according to an embodiment of the present invention in a partial cross section.

FIG. 3 is a configuration diagram showing a conventional fire hydrant facility with an air valve.

[Explanation of symbols]

 Reference Signs List 5 air valve 6A fire hydrant cap 7 three-way ball valve (three-way valve) 8 valve box 8A inlet 8B outlet 8C auxiliary outlet 9 ball-shaped valve element (valve element) 9A first valve hole 9B second valve hole 11 switching operation handle ( Switching operation unit) C1 Axis of valve box C2 Axis intersecting with axis of valve box

Claims (1)

[Claims] 1. A valve body comprising: a valve box; a valve body accommodated in the valve box for switching operation; and a switching operation unit attached to the valve body for switching the valve body from outside the valve box. The valve box is provided with an inlet and an outlet spaced apart on both sides in the axial direction, and an auxiliary outlet is provided on an axis intersecting the axis between the inlet and the outlet, and the valve body has the A first valve hole for communicating the inlet and the outlet when the switch is held in the first switching position by the switching operation of the switching operation unit;
And a three-way valve provided with a second valve hole for communicating the inlet and the auxiliary outlet when held in the second switching posture by the switching operation of the switching operation part, wherein the fire extinguisher cap is provided at the auxiliary outlet. A three-way valve with a fire hydrant cap, which is provided with: