JPS6227973A - Valve for hydrant - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a fire hydrant valve used for a fire hydrant in a building or the like, and more particularly to a fire hydrant valve that facilitates the opening operation of the valve.

b. Conventional technology When using a fire hydrant in the event of a fire, the hose stored in the storage box is pulled out, one firefighter holds the water nozzle, and another firefighter opens the hydrant valve to let water flow through. , are conducting fire extinguishing work. Therefore, when there is only one firefighter, it is virtually impossible to open the fire hydrant valve while holding the water discharge nozzle because the water pressure at the fire hydrant is so high.

Therefore, an application was previously filed for a fire hydrant valve (Utility Model Application No. 59-28400) as shown in Fig. 7, which can be easily operated by a single firefighter.

This fire hydrant valve has a cylindrical cane inner pipe 3 slidably fitted into a right-angled outer pipe 2 which is rotatably fitted into a water supply port 1.
An O-ring 4.5 is disposed between the outer tube 2 and the inner tube 3 to ensure watertightness. On the other hand, a fire hose 6 is attached to the tip of the inner tube 3, and a nozzle (not shown) is attached to the tip of the fire hose 6.

In the event of a fire, the main valve of the fire hydrant is opened, the nozzle is taken to the scene of the fire, and when the fire hose 6 is pulled, the inner pipe 3 slides and the outer pipe 2 and the inner pipe 3 are brought into communication. As a result, water flows from the outer tube 2 through the inner tube 3, and water discharge is started.

C1 Problems to be Solved by the Invention According to such a fire hydrant valve, it can be operated by a single fire extinguisher, but the water pressure in the outer pipe 2 acts on the side of the inner pipe 3, and normally the water pressure is kg/cd, the pulling force is 12 kg, and the water pressure is 7 kg/cd.
-, since a pulling force of 20 kg is required, the inner tube 3 must be pulled with considerable force when the valve is opened. For this reason, when a person who is inexperienced with the operation or a person with weak strength such as a woman tries to pull the fire hose 6, the inner pipe 3 does not slide and water starts to be discharged. In some cases, the fire hose 6 may not be activated, and operations such as pulling the fire hose 6 may be required again.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fire hydrant valve that solves the above-mentioned problems and allows even a weak operator such as a woman or a woman to easily extinguish a fire.

d. Means for Solving the Problems The present invention comprises an 11-shaped outer tube connected to a water supply port through one open end and forming a flow path in an orthogonal direction, and a hose base at the tip. and an inner tube whose rear end is inserted coaxially from the other open end of the outer tube to block the flow path indicated by -1, and which is supported by the outer tube and which is A valve body fitted into the pipe is provided, and a passage is provided that communicates the space on the proximal end side of the outer pipe blocked by the L-oriented pipe with the space on the rear end side of the inner pipe, and an electromagnetic valve for opening and closing the passage. A valve is provided, and a control means is provided to arbitrarily set the operation of the valve.

e. In the event of a fire, pull out the fire hose and
After setting the valve operation time, we head to the site. Then, the solenoid valve that has arrived at the site is activated to open the passage, thereby communicating the space on the proximal end side of the outer tube and the space on the rear end side of the inner tube. As a result, the space on the rear end side of the inner tube is filled with water through the J path, and the water pressure in the space increases, causing the inner tube to slide and opening the valve.

EXAMPLES The present invention will now be described in detail with reference to the illustrated embodiments.

1 to 3 are sectional views showing one embodiment of the fire hydrant valve of the present invention, and FIG. 4 is a conceptual diagram showing a fire hydrant box.

In FIG. 4, reference numeral 10 is a fire hydrant box having a side-opening door 12 on the front side of a box body 11.

Inside this fire hydrant box 10, a hose storage container 13 with a second basket is provided, and this hose storage container 13 has -
The bottom two rows of Haskesoto 14. ．． Usually two fire hoses 15 of 14 □ are folded and stored. A fire hose 15 stored in the upper stage is equipped with a water spray nozzle I6 and supported by a holder 17. The two fire hoses 15 are connected to each other through one end, and the other end of the fire hose 15 housed in the lower basket 14□ is connected to the fire hydrant valve 18.

This fire hydrant valve 18 is a release valve that opens by pulling the fire hose 15;
It rotates in the direction of.

This fire hydrant valve 18 will be explained with reference to FIGS. 1 to 3.

This fire hydrant valve 18 is composed of an L-shaped outer pipe 20 connected to a water supply port 19, and an inner pipe 22 that is partially slidably fitted into the cylindrical part 21 of this outer pipe 20. It is a valve that opens and closes a flow path by sliding the pipe 22.

The outer tube 20 has a claw portion 23 biased by a spring (not shown) on the inner surface of the open end of the water supply port 19, and is rotatably fitted into the water supply port 19 via the claw portion 23. ing.

A valve body 24 is supported on the axis of the cylindrical portion 21 of the outer tube 20, and the inner tube 22 is fitted into or disengaged from the valve body 24 to open and close the valve. The valve body 24 is composed of a valve body 25 and an O-ring 26, and is attached to a bolt 27 passing through a central insertion hole, and is supported by the closed end wall surface 21a of the cylindrical portion 21.

The wall surface of the rear end of the inner tube 22 has a space A on the proximal end side of the outer tube 20 and a space B on the rear end side of the inner tube 22, with the inner tube 22 blocking the flow path of the outer tube 20. A communicating passageway 28 is provided.

Reference numeral 29 denotes a solenoid valve that opens and closes the passage 28, and this valve includes a valve body 30 and an electromagnet 31 that operates the valve body 30.
and a return spring 32.

The valve body 30 has a plunger 33 disposed concentrically with the bolt 27, a radial support plate 34, and a resin ring 35 attached to the support plate 34. On the other hand, the electromagnet 31 that operates the plunger 33 is
The return spring 32 is disposed on the outside of the wall surface 21a of the cylindrical portion 21, and the return spring 32 is disposed in the middle of the plunger 33.
The protrusion 33a is interposed between the protrusion 33a and the wall surface 21a. Reference numeral 211) denotes a cylindrical portion provided on the wall surface 21a concentrically with the plunger 33, and this cylindrical portion 21b has the above-mentioned return spring 32 disposed inside thereof, and an open end of the cylindrical portion 21b The protrusion 33a is connected to the 11-
An lz section 21c is provided. The inner circumferential surface of the inner tube 22 is formed with a sawtooth-shaped uneven portion 36 for increasing the flow resistance, and the outer circumferential surface is provided with a cutout formed on the inner circumferential surface of the outer tube 20. A step 22 connected to the stopper step 20a
a is formed. 37 is an O-ring provided on the inner peripheral surface of the outer tube 20.

Returning to FIG. 1, 38 is an alarm switch, 39 is a pump start switch, 40 is an adjustment button for setting the operating time of the solenoid valve 29, and 41 is a start button. This adjustment button 40 operates a control means, such as a timer relay, which can control the time until the hose is fully extended, usually from 0 to 30 seconds.

Next, the operation of the fire hydrant valve of the present invention having the configuration described in -I- will be explained.

In the event of a fire, the door 12 of the fire hydrant is opened, the alarm switch 3 is pressed, and the pump start switch 39 is pressed. Next, the time until the electromagnetic valve 29 operates is set using the adjustment button, and the user holds the water discharge nozzle 16 and presses the start button 41. Then, after a certain period of time has elapsed after heading towards the fire scene, the solenoid valve 29 is activated and the valve body 30 is caused to slide. As a result, the passage 28 is opened and water flows into the space B. When the space B is filled with water and the internal pressure increases, the water pressure causes the inner pipe 22 to slide and the valve body 24 to slide.
to separate from In this way, the proximal end side of the outer tube 20 and the inner tube 2
2 is connected and water discharge begins. At this time, inner pipe 2
Since the flow path resistance increases due to the uneven portion 36 inside the inner tube 2,
2 sliding motion is facilitated.

When the fire extinguishing work is completed, the pump is activated and the solenoid valve 31
The fire hydrant valve is returned to its original state by stopping the operation of the valve, stopping the water supply, and pushing the inner pipe 22 into the outer pipe 20.

g. Other Embodiments FIGS. 5 and 6 show other embodiments of the present invention, in which the same parts as in FIG. 1 are given the same reference numerals and their explanations are omitted.

In this case, the hole 42 is perpendicular to the middle of the passage 2H that communicates the proximal space A of the outer tube 20 with the rear end space B of the inner tube 22.
is bored in the axial direction of the wall surface of the inner tube 22, and the valve body 44 of the electromagnetic valve 43 is slid into this hole 42. This valve body 44 is provided on a ring 47 provided on the plunger 45 via a support plate 46 . 48 is a return spring.

In this embodiment as well, by setting the operating time of the solenoid valve 43 using the adjustment button 40 and pressing the start button 41, the solenoid valve 43 is activated and the valve body 44 is slid when the fire scene is reached. , opens the passage 28. Then, water flows into the space B through the passage 28, and as it is filled with water, it slides on the inner pipe 22 and moves from the valve body 24 to the inner pipe 2.
2 to leave. In this way, the valve opens and water supply begins.

h9 Effects of the Invention - As stated above, the fire hydrant valve of the present invention has a 5-shaped outer pipe that is connected to the water supply port through one open end and has a flow path in the orthogonal direction. , connect the base of the hose to the tip, and connect the coaxial cable from the other open end of the outer tube.
An outer tube that is blocked by the inner tube and includes an inner tube in which the rear end portion is fitted while blocking the flow path, and a valve body that is supported by the outer tube and fitted into the inner tube. In addition to providing a passage that communicates the space on the proximal end side of the inner tube with the space on the rear end side of the inner tube, a solenoid valve for opening and closing the passage is provided, and a control means is provided for arbitrarily setting the operation of this solenoid valve. The fire hydrant valve can be opened after a predetermined period of time has elapsed after pressing the push button switch, and even a human operator can easily carry out fire extinguishing operations.

Furthermore, since the time until the start of water spraying can be set using the adjustment button, the time until the start of water spraying can be easily set depending on the distance to the site, etc.

Note that there are the following prior art related to the present invention.

■ Jitsugan No. 59-32009 “Fire hydrant valve” ■
〃No. 59-33741 “ ”

[Brief Description of the Drawings] Figures 1 to 3 are sectional views showing one embodiment of the fire hydrant valve of the present invention, Figure 4 is a conceptual diagram showing a fire hydrant box, and Figures 5 and 6 are sectional views showing an embodiment of the fire hydrant valve of the present invention. FIG. 7 is a sectional view showing another embodiment of the present invention, and FIG. 7 is a sectional view showing a conventional fire hydrant valve. 20...Fire hydrant valve, 2o...Outer pipe,
21... Cylinder part, 22... Inner tube,
24... Valve body, 28... Passage,
29, 43...Solenoid valve, 30.44...
・Valve body, 36... Uneven part, 40.
...adjustment button, 42...hole.

Claims (2)

[Claims] (1) An L-shaped outer tube that is connected to the water supply port through one open end and has a flow path orthogonally formed therein, and the other open end of the outer tube has the base of the hose connected to its tip. an inner tube coaxially blocking the flow path and fitting the rear end thereof; and a valve body supported by the outer tube and fitted into the inner tube, the valve body being blocked by the inner tube. A passage is provided that communicates the space on the proximal end of the outer tube with the space on the rear end of the inner tube, and a solenoid valve for opening and closing the passage is provided, and a control means is provided for arbitrarily setting the operation of this solenoid valve. A fire hydrant valve characterized by: (2) The fire hydrant valve as set forth in claim (1), wherein an uneven portion is formed on the inner circumferential surface of the inner pipe.