JPH105364A - Water pressure regulator foe fire hose - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent trouble for the hosing of water even when a hose is compressed by a heavy vehicle while water is hosed for extinguishing a fire by fitting a device for regulating water pressure by hosing water corresponding to excess-water pressure in the middle of the hose extended through a fire pump onto the surface of road. SOLUTION: In the middle of fire hoses 3a and 3b, a female screw metal fixture 2a is attached at the terminal part of a body 1 and a male screw metal fixture 2b is attached at the other terminal so that the metal fixture hoses 3a and 3b for screw are respectively screwed. A base frame 5 is formed by fitting a bottom plate 4c through frame poles 4a and 4b under the body 1, and the body 1 is held separately from the surface of road. Inside the base part of the base frame 5, links 7a and 7b are wound, and a handle 8 is fitted freely movably from side to side. Water release holes 9a are opened on the front and rear side faces of the body 1 between the links 7a and 7b, and open/close lids 10a are hinged through narrow pressure springs 13a to the respective holes. Thus, when the hoses 3a and 3b are compressed by the heavy vehicle, the open/close lids 10a and 10b are opened and discharge water and when the compression is canceled, the open/close lids 10a are closed so that water is discharged again for extinguishing the fire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire pressure control device for a fire hose that releases excessive water pressure due to local closure in the middle of a fire hose.

[0002]

2. Description of the Related Art A conventional water pressure adjustment prevention tool for a fire hose is called a car bridge, which is provided with an opening on the base piece such that a part of the hose is fitted therein, and has a left and right inclined surface facing each other. Tools have been proposed (see, for example,
185032).

[0003]

In a fire brigade for a fire hose in the related art, a proposal is made to fit a hose into a space of the car bridge to smoothly discharge water in order to extend the hose on a road surface during a fire extinguishing operation. Although it has been done,
In the event of a fire, it is not always possible for many vehicle wheels to pass over the car bridge. Therefore, not only will the hose be compressed by the wheels of heavy vehicles such as trucks and automobiles on the hose in the water supply connected to the hydrant etc. However, there is a problem that fire-fighting equipment is affected, as well as fire-fighting activities.

Accordingly, the present invention provides a water pressure adjusting device for a fire hose capable of smoothly extinguishing a fire without impeding water discharge even when compressed by the wheels of a heavy vehicle such as a truck or an automobile passing over a hose during water supply. And the hose used in the device is easy to install,
And it can be provided at low cost.

[0005]

In order to achieve the above object, in a water pressure adjusting device for a fire hose according to the present invention, a fire hydrant or a hose or a water suction pipe connected to a water storage location is attached to a fire pump. A device that adjusts the pressure of the discharged water in accordance with the excess water pressure is provided in the middle of the hose that extends on the road surface via the air.

It is effective that the water pressure adjusting device is mounted outside the road surface.

In order to carry and connect hoses to both ends, female and male mounting brackets are separately attached to both ends of a decompressor as a water pressure adjusting device, and water outlets are provided before and after the decompressor. An opening / closing lid is attached to the mouth with an opening / closing tool, for example, a screw number so that the opening / closing can be performed when necessary.

Further, the upper surface of the opening / closing lid is pressed by a spring so that the opening / closing lid of the water drainage port is not opened unnecessarily, and the drainage opening is adjusted for opening one or both of the drainage openings.
A stopper lever is provided rotatably on the side of the pipe main body to selectively open the water drainage port and perform the opening operation so as not to hinder or damage the water discharge side.

[0009]

An embodiment of the present invention will be described with reference to the drawings.

In FIG. 1 to FIG. 3, a female screw fitting 2a is provided at one end of the end of the vessel 1 and a male screw fitting 2b at the other end in the middle of the fire hose, and a screw fitting suitable for each of the fittings 2a, 2b is provided. The hoses with fittings 3a and 3b are screwed respectively. The body 1
The bases of the frame rods 4a, 4b are attached to the left and right inside of the body 1 so as to support the body 1 away from the road surface, and the bases are attached to the bottom plate 4c by hanging from the base. Is configured. An elastic body 6, for example, a natural rubber, a synthetic rubber, a sponge, or the like is attached to the lower surface of the bottom plate 4c. Bottom plate 4
It is preferable that c is formed wider than the width of the container 1 because of its stability.

A handle 8 is attached to the links 7a and 7b wound around the body 1 inside the base of the base frame 5 so as to be movable left and right, and the user carries the handle 8 to the installation position. The links 7a, 7b
Drainage openings 9a and 9b are opened on the front and rear side surfaces of the container 1 between the opening and closing lids 10a and 10b so as to cover the drainage openings 9a and 9b.
b, the base ends of which are hinged to the fixtures 11a and 11b,
Packing 12a, 12b are provided on the inner surfaces of the open / close lids 10a, 10b.
b is attached. Further, clamping springs 13a, 13b are provided on the upper surfaces of the open / close lids 10a, 10b so that the open / close lids 10a, 10b operate and open only when water pressure is applied to the inside of the hose.
b The pressure reducer 29 is constituted by providing a leaf spring, for example.

Reference numeral 14 denotes a stopper lever, which is provided with a ring 15 on one side adjacent to the water outlets 9a and 9b of the container 1, and a control piece 16 is attached below the center line of the ring 15 to stop the stopper lever 14. By rotating the ring 15 left and right by the relaxation of the opening and selectively closing the openings of the water drainage openings 9a and 9b, one or both of the openings can be opened.

A water cover 17 is provided immediately below the water drainage ports 9a and 9b of the vessel 1 and in the base frame 5 to prevent water from scattering.

The embodiment shown in FIG.
Screw No. 1 which is a fixture for the opening / closing lids 10a and 10b of FIGS.
After projecting both ends of the shaft 19 inserted through 8a and 18b to the outside and winding a spring 20 around the shaft 19 protruding from both ends, one end is moved upward along the peripheral surface of the body 1 and the other end is moved upward. After hanging down slightly along the body 1, the opening / closing lid 10
The pressure reducer 29 is formed by bending the upper surfaces of a and 10b from the left and right and pressing them. Other configurations are the same as those of the embodiment shown in FIGS.

The embodiment shown in FIGS.
A plurality of branch pipes 21 are radially provided in the center circumference of
A gasket 23 communicating with the inside of the water discharge pipe 22 is attached below the branch pipe 21, a ball 24 is provided on the gasket 23, an upper surface thereof is formed in the water pipe 25, and a water drain port 26 is provided.
The ball 24 is provided by a spring 27 provided in a water pipe 25.
, And a spring retainer 28
Are attached to form a pressure reducer 29.

The ball 24 is automatically pushed upward by the excess water pressure in the pressure reducer 29, and the water discharged from the water outlet 26 instantaneously collides with the water discharged from the adjacent water outlet 26 to form a spray. Becomes

In the embodiment shown in FIGS. 8 and 9, a plurality of branch pipes 21 are provided in parallel on the peripheral surface of the vessel 1, and the drain port 26 of the branch pipe 21 is provided in the hose laying direction. Thus, a pressure reducer 29 is configured. The structure of the branch pipe 21 is the same as that of the embodiment shown in FIGS.

In the embodiment shown in FIG. 10, a concave / convex surface 30 is formed on the outer peripheral upper surface of the body 1, a fitting 31 such as a hinge is provided below, and the opening / closing lid 1 for the water outlets 9a and 9b is provided at the front and back.
0 a and 10 b are provided, and the upper surfaces of the open / close lids 10 a and 10 b are pressed by a pressing spring 32 to form a pressure reducer 29.

A fixed leaf spring 34 is provided in contact with the center of the lower surface of the pinching spring 32, and both ends of the fixed leaf spring 34 are inserted and fixed to the fixed plate 33.

The contact stress between the pinching spring 32 and the fixed leaf spring 34 facilitates the opening and closing of the drain holes 9a and 9b, and adjusts the control piece 35 along the circumferential direction of the body 1 by adjusting the left and right bolts 36. The water is inserted into the uneven surface 30 and moved to drain 9a,
9b is formed so that one or both can be selectively opened.

[0021]

The present invention has the following effects because it has been taught as described above.

Since the female and male threaded portions are provided on the left and right sides of the pressure reducer so that the hose can be threaded halfway, there is an effect that the operation of attaching the hose can be extremely simplified.

Since the opening / closing lid of the water outlet of the pressure reducer automatically opens and closes by the water pressure, there is an effect that no trouble occurs in the water discharging operation. .

Further, since the upper surface of the opening / closing lid of the pressure reducer is clamped by the clamping spring, there is an effect that it is possible to easily cope with a change in the amount of flowing water in the hose and to perform a fire extinguishing activity smoothly.

Since the stopper lever is attached,
There is an effect that the operation of opening and closing the opening / closing lid of the water drain can be arbitrarily selected by operating the stopper lever.

[Brief description of the drawings]

FIG. 1 is a side view of a water pressure adjusting device for a fire hose.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a side view showing another embodiment of the fire hose water pressure adjusting device.

FIG. 5 is a partially cutaway side view showing another embodiment of the fire hose water pressure adjusting device.

FIG. 6 is an explanatory diagram showing a main part.

FIG. 7 is an explanatory view of a branch pipe.

FIG. 8 is a partially cutaway side view showing another embodiment of the fire hose water pressure adjusting device.

FIG. 9 is an explanatory view showing a branch pipe.

FIG. 10 is an explanatory view showing another embodiment of the fire hose water pressure adjusting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument body 3a, 3b Hose 5 Base frame 9a, 9b Drain opening 10a, 10b Opening / closing lid 13a, 13b Clamping spring 14 Stopper lever 18a, 18b Screw number 19 Shaft 29 Pressure reducer

Claims (4)

[Claims] 1. A depressurizer supported by a base frame is formed with male and female screwing portions on both left and right ends, respectively, and an opening / closing lid is provided at a drain port formed in front and rear of a body of the depressurizer, and is connected to the depressurizer. A fire hose characterized in that it is formed so that the drain is automatically opened at the moment when the hose is locally closed from the outside and the water is discharged, and then the hose is restored by the stored force of the clamping spring when the closure is completed. Water pressure regulator. 2. An upper surface of the front and rear opening / closing lid is pressed by a leaf spring,
2. The water pressure adjusting device for a fire hose according to claim 1, wherein opening and closing can be adjusted. 3. A hinge is attached to the base of the front / rear opening / closing lid, and a spring is wound around both ends of a shaft inserted through the hinge so that one end extends along the upper surface of the body, and the other end extends downward. 2. The opening / closing lid is pressurized from above by being bent in a plane direction.
Or the water pressure adjusting device for a fire hose according to 2. 4. The water pressure adjusting device for a fire hose according to claim 1, wherein a stopper lever is attached to the pressure reducing device so that one or both of the front and rear opening / closing lids can be opened / closed.