JP3727880B2 - Two-fluid spraying device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a two-fluid spraying device that is used in a two-fluid fire extinguisher and that injects liquid and gas pumped from a liquid supply source and a gas supply source and injects them as mist-like water.
[0002]
[Prior art]
As a two-fluid fire extinguishing apparatus for spraying liquid and gas simultaneously to a two-fluid nozzle to spray a mist-like liquid and spraying this mist-like liquid on a fire source at a fire site, the one shown in FIG. Already proposed by Japanese Patent Application No. 10-270829.
The two-fluid fire extinguisher 100 includes a compressor 101, a pump 102, a two-fluid nozzle 103, hoses 104 and 105, and a double hose 106. The compressor 101 compresses air to produce a hose 104 and a double hose. The two-fluid nozzle 103 is pumped to the two-fluid nozzle 103, the water stored in the water storage tank 107 such as a fire extinguishing water tank is pumped up by the pump 102, and is pumped to the two-fluid nozzle 103 through the hose 105 and the double hose 106. In 103, pressurized water and compressed air are mixed, and mist-like water 109 is sprayed from the spray port 108 to the flame of the fire to extinguish the fire.
According to this two-fluid fire extinguishing apparatus 100, compared to an apparatus that uses only water to extinguish, mist-like water jets vigorously from a two-fluid nozzle and reaches a distant fire source, and a small amount of water Since the temperature drop of the flame and the blowing-out action by the jet of air from the two-fluid nozzle 103 are effectively performed, water can be saved, and the fire can be quickly extinguished with the least possible water loss.
[0003]
[Problems to be solved by the invention]
However, although the two-fluid nozzle 103 of the two-fluid fire extinguishing apparatus 100 has basic components for mixing two fluids and injecting a mist-like liquid to a fire source, a fireman or the like is easy to extinguish the fire. It does not have a specific configuration to perform fire extinguishing work quickly and accurately.
[0004]
The present invention has been made in view of the above circumstances, and an object thereof is to provide a two-fluid spray device that is lightweight, small, easily operated, and capable of performing fire-fighting work quickly and accurately. .
[0005]
[Means for Solving the Problems]
The present invention is characterized by the following points in order to solve the above problems.
That is, the two-fluid spraying device according to claim 1 includes a gas-liquid mixing section that has a gas introduction pipe and a liquid introduction pipe, and mixes gas and liquid introduced from these introduction pipes, and a tip of the gas-liquid mixing section. In the two-fluid spraying device provided with a jet part for ejecting the gas and liquid mixed in the gas-liquid mixing part and the liquid as a mist-like liquid, pipes having rigidity in the gas introduction pipe and the liquid introduction pipe, respectively Each of these pipes has a shaft and is provided with an on-off valve that opens and closes the pipe line of each pipe by being simultaneously rotated by an operation lever attached to the shaft. It is said.
[0006]
The two-fluid spray device according to claim 2 is the device according to claim 1, wherein each pipe is bent at an obtuse angle downward in the middle, and a distal end tube and an upstream proximal tube at the downstream side of the bent portion. It is characterized by that.
[0007]
A two-fluid spraying device according to a third aspect is the device according to the second aspect, characterized in that the on-off valve is provided at a position near the bent portion of the tip tube of each pipe.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a two-fluid spray device according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
1 and 2 show a two-fluid spray device 1 according to an embodiment of the present invention. The two-fluid spray device 1 includes a gas-liquid mixing unit 2 that mixes air (gas) and water (liquid), and a jet unit that jets the air and water mixed in the gas-liquid mixing unit 2 as mist-like water. 3, a gas pipe 4 and a liquid pipe 5 having rigidity for supplying gas and liquid to the gas-liquid mixing unit 2, and opening / closing valves 6 and 7 for opening and closing the pipe lines of the pipes 4 and 5, respectively. Yes.
[0009]
The gas-liquid mixing unit 2 is disposed on the same axis as the mixing unit main body 8 inside the mixing unit main body 8 and a cylindrical mixing unit main body 8 having a tapered side 8a on the tip side (downstream side). The gas introduction pipe 9 fixed to the closed end 8b on the base end side (upstream side) of the mixing unit main body 8 and the liquid introduction fixed to the lower part of the mixing unit main body 8 and opened to the inside of the mixing unit main body 8 It is formed from the tube 10.
The ejection portion 3 is formed of a cylindrical member having a tapered portion 3a having a tapered front end side, and a proximal end portion is connected to a distal end portion of the tapered portion 8a of the gas-liquid mixing portion 2 by a screw or the like.
[0010]
The gas introduction tube 9 is made of a cylindrical member having a tapered tapered cylindrical portion 9a at the tip thereof opened near the tapered portion 8a of the mixing portion main body 8, and is outside the closed end portion 8b of the mixing portion main body 8. A distal end portion (downstream end portion) of the gas pipe 4 is connected to the proximal end portion that protrudes toward the bottom.
The liquid introduction tube 10 is made of a cylindrical member bent in an L shape, and has a distal end fixed to the outer peripheral portion of the mixing unit main body 8 and an opening 10a at the distal end communicated with the inside of the mixing unit main body 8. The end of the liquid pipe 5 (downstream end) is connected to the end.
[0011]
As shown in FIG. 1, the gas pipe 4 and the liquid pipe 5 are in a substantially parallel state with the gas pipe 4 on the top and the liquid pipe 5 on the bottom. The proximal ends (upstream side) of the bent portions 4a and 5a are inclined tube portions (base end tubes) 4b and 5b, and the distal end side (downstream side) connected to the gas-liquid mixing portion 2 from the bent portions 4a and 5a. Horizontal tube portions (tip tubes) 4c and 5c are provided. And the pipe joints 11 and 12 which can be attached to and detached from the gas hose and the liquid hose connected to the gas supply source and the liquid supply source at one touch at the base end portions (upstream end portions) of the inclined pipe portions 4b and 5b, respectively. The on-off valves 6 and 7 are provided at positions close to the bent portions 4a and 5a in the horizontal pipe portions 4c and 5c, respectively.
Each of the bent portions 4a and 5a has an angle formed by the inclined tube portions 4b and 5b and the horizontal tube portions 4c and 4c on the concave portion side is 90 ° or more, preferably around 135 °, The side is obtuse.
[0012]
The on-off valves 6 and 7 are composed of ball valves, butterfly valves, etc., and operation fittings 13a and 13b are attached to valve shafts 6b and 7b protruding outward from the valve boxes 6a and 7a so as to face each other. One operation lever 13 is fixed to the operation fittings 13a and 13b, and the operation lever 13 is manually moved in the horizontal direction indicated by an arrow A between the closed position a and the open position b (see FIG. 2). When the turning operation is performed, the pipelines of the gas pipe 4 and the liquid pipe 5 are opened and closed simultaneously.
A stopper (not shown) for stopping the operation lever 13 at the closed position a and the open position b is provided between one of the opening / closing valve 6 and the opening / closing valve 7 and the operation lever 13. An urging means (not shown) such as a spring for urging 13 to the closed position a side with a weak force at all times is provided.
[0013]
The inclined pipe part 5b of the liquid pipe 5 is bent so as to be in contact with the inclined pipe part 4b of the gas pipe 4, and is provided with a recess 5d so that the two-fluid spray device 1 can be grasped appropriately with one hand. ing. The two-fluid spray device 1 is made of a synthetic resin or rubber that surrounds the gas-liquid mixing unit 2, the gas pipe 4, and the liquid pipe 5 so as not to hinder the operation of the operation lever 13 as necessary. A cover C such as can be provided.
[0014]
When the two-fluid spraying device 1 configured as described above is used for a two-fluid fire extinguisher to extinguish a fire, for example, as shown in FIG. 3, it is connected to a shoulder-type air cylinder (gas supply source) 14. The tip of the gas hose 14a is connected to the inclined pipe portion 4b of the gas pipe 4 through the pipe joint 11, and the tip of the liquid hose 15a provided along the gas hose 14a is connected to the inclined pipe portion of the liquid pipe 5. 5 b is connected via a pipe joint 12, and the base end of the liquid hose 15 a is further connected to a water supply source (liquid supply source) 15 such as a connected water pipe, indoor fire hydrant, fire truck water pipe, etc. 14 is connected to an extended liquid hose 15b extended to 14.
[0015]
Then, air and water are supplied to the two-fluid spraying device 1 from the air cylinder 14 and the water supply source 15, and the horizontal pipe portions 4c and 5c of the gas pipe 4 and the liquid pipe 5 are held with one hand. After holding the inclined pipe portions 4b and 5b of the pipes 4 and 5 with the other hand and directing the ejection portion 3 toward the fire, the operating lever 13 of the on-off valves 6 and 7 is moved from the closed position a with one hand. Rotate to open position b. As a result, the pipes of the gas pipe 4 and the liquid pipe 5 are simultaneously opened, and air and water are mixed in the gas-liquid mixing unit 2 to instantly become mist-like water and are jetted vigorously to the fire source. Is extinguished.
[0016]
According to the two-fluid spraying device 1 according to the above embodiment, by simultaneously opening the on-off valves 6 and 7 provided in the middle of the gas pipe 4 and the liquid pipe 5, Water can be jetted vigorously by instantly forming mist-like water effective for extinguishing a fire at the jetting unit 3.
[0017]
Further, since the gas pipe 4 and the liquid pipe 5 which are connected to the gas-liquid mixing section 2 and are extended to the upstream side thereof are made parallel and bent downward, the pipes 4 and 5 are discharged. It has an appropriate thickness that can be easily grasped with one hand like a gun, can reliably support the two-fluid spray device 1, is easy to operate, and the middle of each pipe 4, 5 is bent downward. Thus, even if the gas hose and the liquid hose connected to the pipes 4 and 5 hang down, the inclined pipe portions 4b and 5b of the pipes 4 and 5 allow the sag to be reasonably allowed (of the hoses 14a and 15a). Therefore, the two-fluid fire extinguishing apparatus 1 can be easily supported by hand and can be operated freely according to the fire situation.
[0018]
In the two-fluid spray device 1, since the open / close valves 6.7 are provided in the horizontal pipe portions 4c and 5c near the bent portions 4a and 5a of the pipes 4 and 5, respectively, the horizontal pipe portions 4c and 5c are provided. It is preferable that each of the on-off valves 6 and 7 can be easily operated by the operation lever 13 with one supporting hand, but the position of the on-off valves 6 and 7 is not limited to the above, and the inclined pipe portion of each of the pipes 4 and 5 You may provide in the place close to the pipe joints 11 and 12 of 4c, 5c.
[0019]
The two-fluid spray device 1 is not limited to the two-fluid fire extinguisher F shown in FIG. 3 but can be used for other two-fluid fire extinguishing devices.
For example, as shown in FIG. 4, the two-fluid fire extinguisher F <b> 1 having an extended liquid hose 15 b that is mounted with an air cylinder 14 </ b> A (gas supply source) on the movable carriage 16 and that can be connected to the water supply source 15, The two-fluid spray device 1 may be used by connecting it via the gas hose 14a and the liquid hose 15a. Also, as shown in FIG. 5, an air cylinder 14A and a water tank (liquid supply source) are connected to the movable carriage 16 as shown in FIG. ) And a two-fluid fire extinguishing device F2 that pushes out the water in the water tank 17 with the air in the air cylinder 14A and is connected to the two-fluid spray device 1 via the gas hose 14a and the liquid hose 15a. May be.
[0020]
Further, as shown in FIG. 6, a water tank 19, a compressor 20, a pump 21, and the like are mounted on a portable frame 18, and an extended gas hose 14 b and an extended liquid hose 15 b communicated with the compressor 20 and the pump 21 are provided. The two-fluid spray device 1 may be connected to the two-fluid fire extinguishing device F3 via the gas hose 14a and the liquid hose 15a, and an air cylinder (gas supply source) 22 may be used as shown in FIG. The two-fluid spray device 1 is connected to the two-fluid fire extinguisher F4 provided with the built-in indoor fire hydrant (liquid supply source) 23, the extended gas hose 14b and the extended liquid hose 15b via the gas hose 14a and the liquid hose 15a. May be used.
[0021]
Furthermore, as shown in FIG. 8, a package-type indoor fire hydrant incorporating a water tank (liquid supply source) 24, an air cylinder (gas supply source) 25, a pressurizing gas cylinder 26 for pushing out water in the water tank 24, and water A two-fluid fire extinguisher F5 having an extended gas hose 14b and an extended liquid hose 15b communicated with the tank 24 and the air tank 25 via an opening / closing valve 27 is added to the two-fluid fire extinguisher F5 via the gas hose 14a and the liquid hose 15a. The spray device 1 may be connected and used.
In any case, in the same manner as in the case of using the two-fluid fire extinguishing device F to extinguish, mist-like water is accurately jetted from the spraying part 3a of the two-fluid spraying device 1 to quickly extinguish the fire flame. can do.
[0022]
In addition, although the case where the two-fluid spraying apparatus 1 which concerns on the said embodiment was used for the two-fluid fire-extinguishing apparatus which each uses water as compressed gas and liquid as a gas was demonstrated, this invention is not restricted to these, It is a fire extinguishing object Two-fluid fire extinguishing using a non-flammable gas such as carbon dioxide or nitrogen gas as the gas or an aqueous solution mixed with a chemical such as a wetting agent or a strengthening liquid that enhances the fire-extinguishing effect as the liquid Can be used in the device.
[0023]
【The invention's effect】
As described above, according to the present invention, the following excellent effects are obtained.
According to the two-fluid spray device according to claim 1, the gas-liquid mixing part that has the gas introduction pipe and the liquid introduction pipe and mixes the gas and the liquid introduced from these introduction pipes, and the tip of the gas-liquid mixing part In the two-fluid spraying device provided with a jet part for ejecting the gas and liquid mixed in the gas-liquid mixing part and the liquid as a mist-like liquid, pipes having rigidity in the gas introduction pipe and the liquid introduction pipe, respectively These pipes are each provided with an opening / closing valve that has a shaft and is simultaneously rotated by an operation lever attached to the shaft to open and close the pipe line of each pipe. The fluid spraying apparatus can be reliably supported manually, can be easily operated, and can perform fire extinguishing work quickly and accurately.
[0024]
According to the two-fluid spray device according to the second aspect, each pipe is bent at an obtuse angle downward in the middle, and is composed of a distal end pipe downstream from the bent portion and an upstream proximal end pipe. Even if the gas hose and liquid hose connected to the two-fluid spraying device hang down, the sag can be reasonably tolerated by the inclination of the base pipe of each pipe, and the two-fluid fire extinguishing device can be easily supported by hand. It can be operated freely according to the fire situation.
[0025]
According to the two-fluid spray device according to claim 3, since the on-off valve is provided at a position close to the bent portion of the tip tube of each pipe, the tip of the two-fluid spray device is supported in a state where the two-fluid spray device is supported by one hand. By operating the operation lever through one hand supporting the tube, the on-off valve can be easily opened and closed, and the operability is good.
[Brief description of the drawings]
FIG. 1 is a side view showing a part of an embodiment of a two-fluid spraying device according to the present invention in cross section.
FIG. 2 is a plan view showing an embodiment of a two-fluid spray device according to the present invention.
FIG. 3 is a perspective view showing a first example of a two-fluid fire extinguishing apparatus using the two-fluid spraying apparatus according to the present invention.
FIG. 4 is a perspective view showing a second example.
FIG. 5 is a perspective view showing a third example.
FIG. 6 is a perspective view showing a fourth example.
FIG. 7 is a front view showing a fifth example.
FIG. 8 is a front view showing the sixth example.
FIG. 9 is a system diagram showing a two-fluid fire extinguishing apparatus using a conventional two-fluid spraying apparatus.
[Explanation of symbols]
1 Two-fluid spray device 2 Gas-liquid mixing part 3 Ejection part 4 Gas piping (pipe)
4a, 5a Bent part 4b, 5b Inclined pipe part (base pipe)
4c, 5c Horizontal tube (tip tube)
5 Liquid piping (piping)
6, 7 On-off valve 8 Mixing unit main body 9 Gas introduction pipe 10 Liquid introduction pipe 11, 12 Pipe joint 13 Operation lever

Claims (3)

A gas-liquid mixing section that has a gas introduction pipe and a liquid introduction pipe and mixes the gas and liquid introduced from these introduction pipes, and a gas that is connected to the tip of the gas-liquid mixing section and mixed in the gas-liquid mixing section And a two-fluid spraying device comprising a jetting part that ejects liquid as a mist-like liquid,
Pipes having rigidity are respectively connected to the gas introduction pipe and the liquid introduction pipe, and each of the pipes has a shaft and is simultaneously rotated by an operation lever attached to the shaft, so that An on-off valve for opening and closing a pipe is provided.   2. The two-fluid spray according to claim 1, wherein each of the pipes is bent at an obtuse angle downward in the middle, and is composed of a distal end tube and an upstream proximal tube from the bent portion. apparatus.   The two-fluid spraying device according to claim 2, wherein the on-off valve is provided at a position near the bent portion of the distal end pipe of each pipe.

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