JPH0642685Y2 - Fire hydrant device with atmosphere release valve - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fire hydrant device, and more specifically to a fire hydrant device with an atmosphere release valve.

Conventional technology When the fire hydrant valve is closed after the fire extinguishing work is completed, water cannot be supplied to the hose, but there is residual water in the hose.

If there is this residual water, the hose may break due to freezing in a cold region, or the weight balance in the fire hydrant device may be lost, and the door for holding the hose reel may not be opened and closed smoothly.

Therefore, it is necessary to drain the residual water in the hose, but conventionally, an automatic drain valve that opens below a predetermined level was provided near the secondary side of the fire hydrant valve of the fire hydrant device. The water and residual water in the secondary side pipe are automatically drained. However, since this automatic draining takes time and the residual water in the hose cannot be drained sufficiently, an air release valve is further provided on the secondary side of the fire hydrant valve, and this air release valve is opened to release compressed air from the release valve. I send it and drain it.

Problems to be Solved by the Invention Although the atmosphere release valve of the conventional example has a shape that is completely inconspicuous as compared with the lever of the fire hydrant valve, since it is located near the lever of the fire hydrant valve, it is easy to see from anywhere. Also, since it is a cock type, anyone can easily operate it.

Therefore, a general fire extinguisher who is unfamiliar and panicked may accidentally open the atmosphere release valve before water comes out.

As a result, the water discharge capacity at the time of fire extinguishing may decrease, and it may not be possible to spray water to a long distance. Further, the atmosphere opening valve is provided in a water supply pipe connecting the fire hydrant valve and the water supply tank of the hose reel rotary base, and this water supply pipe is provided in the lower portion of the hose reel rotary base. Therefore, when the air release valve is opened and compressed air is sent, the air flows through the water supply pipe to the hose, and the residual water in the water supply pipe becomes bubbles and becomes a resistance to the flow of the compressed air.

Therefore, the residual water in the hose cannot be drained efficiently, and the time required for draining the water becomes long.

In view of the above circumstances, the present invention aims to prevent accidental opening of the atmosphere release valve and to efficiently remove residual water in the hose.

Means for Solving the Problems The present invention is to connect a secondary side of a fire hydrant valve to a water tank of a hose reel turntable, connect a hose of a hose reel to the water tank, and connect an atmospheric air to the secondary side of the valve. In a fire hydrant device provided with an opening valve, the atmosphere opening valve is provided inside an inner peripheral edge of a hose reel and is connected to an upper portion of the water supply tank to achieve the above object.

Action When a driver or the like opens the door of the housing to open the lever of the fire hydrant valve in the event of a fire, the atmosphere release valve is inside the inner peripheral edge of the hose reel, so there is no risk of accidentally touching the handle of the valve.

After the fire extinguishing work is completed, when the atmosphere release valve is opened and compressed air is sent, the air is sent into the hose without receiving the resistance of the residual water in the water supply pipe and drains the residual water in the hose.

Embodiment An embodiment of the present invention will be described with reference to the accompanying drawings, in which the same reference numerals have the same names and functions.

A fire hydrant valve 3 with a lever 2 is arranged in the housing 1.

A hose reel 6 mounted on a turntable 5 is provided on the back surface 4 a of the door 4 of the housing 1.

A water supply tank 8 is provided in the center of the rotary table 5, and the water supply tank 8 is connected to the fire hydrant valve 3 via a water supply pipe 7.

An atmosphere release valve 9 communicates with the upper portion of the water supply tank 8, and the valve 9 is located inside the inner peripheral edge 6a of the hose reel 6 and below the upper surface 6b thereof.

A hose 10 connected to the water supply tank 8 is wound around the hose reel 6, and a nozzle 11 is provided at the tip of the hose 10. In addition, 14 is an automatic drain valve that opens at a predetermined pressure or less.

Next, the operation of this embodiment will be described. When a fire occurs in the tunnel 12, the driver approaches the fire hydrant device 13,
The door 4 of the housing 1 is opened, and the lever 2 of the fire hydrant valve 3 is turned to open it.

Then, the nozzle 11 is grasped and water is sprayed toward the fire site.

However, the atmosphere release valve 9 is a hollow cylinder 6c of the hose reel 6.
Since it is inside the section, it is difficult for the driver to see it, so there is little risk of accidentally opening this valve 9. After extinguishing the fire, the inside of the hollow cylindrical portion 6c of the hose reel 6 is looked into and the handle 9a of the atmosphere release valve 9 is turned to open the valve.

Then, compressed air is sent to the valve 9 to drain the water in the hose, and this compressed air flows into the hose 10 through the upper portion of the water supply tank 8 as shown by an arrow A9. Therefore, even if there is residual water in the water supply pipe 7, the compressed air does not pass through the pipe, so that there is no resistance due to the residual water, and smooth,
In addition, the drainage work can be performed efficiently. After the drainage of the hose 10 is completed in this way, the door 4 is closed.

Effect of the Invention In the fire hydrant device with an atmosphere release valve according to the invention, since the atmosphere release valve is provided inside the inner peripheral edge of the hose reel as described above, unlike the conventional example, the fire hydrant valve and the atmosphere release valve are different from each other. Provided separately on the outside and inside of the hose reel,
Moreover, the fire hydrant valve is in a position that is easier to see.

Therefore, a general fire extinguisher is less likely to accidentally open the atmosphere release valve.

Also, since the atmosphere release valve is connected to the upper part of the water tank,
Unlike the conventional example, even if there is residual water in the water supply pipe connected to the lower part of the water supply tank, the compressed air does not pass through the pipe, so there is no resistance due to the residual water.

Therefore, the water draining work can be efficiently performed in a short time.

[Brief description of drawings]

FIG. 1 is an enlarged vertical cross-sectional view taken along the line II of FIG.
FIG. 3 is a plan view of the fire hydrant device when the door is opened, and FIG. 3 is a cross-sectional view showing a mounting state of the fire hydrant device. 3 ... Fire hydrant valve 4 ... Door 5 ... Turntable 6 ... Hose reel 8 ... Water tank 9 ... Atmosphere release valve

Claims (2)

[Scope of utility model registration request] 1. A fire hydrant in which a secondary side of a fire hydrant valve is connected to a water tank of a hose reel turntable, a hose of a hose reel is connected to the water tank, and an atmosphere release valve is provided on a secondary side of the valve. The fire hydrant device with an atmosphere release valve according to claim 1, wherein the atmosphere release valve is provided inside an inner peripheral edge of the hose reel and is connected to an upper portion of the water supply tank. 2. A fire hydrant device with an atmosphere release valve, wherein the atmosphere release valve is provided in a hollow cylindrical portion of a hose reel.