JP2016083191A - Community fire hydrant added with auxiliary fire extinction function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To take in water even during water discharge without stopping the water discharge in fire extinction activities, to cope with a small fire due to fire spreading or catching fire and re-firing occurring after fire extinction, ant to easily take in water as daily life water in disaster time (excluding drinking water) even in other occasions than the fire extinction activities.SOLUTION: The community fire hydrant added with an auxiliary fire extinction function includes: a fire extinction hydrant storage box 1; a fire extinction piping 2 arranged in the fire extinction hydrant storage box 1 and connected with a water source; a fire extinction valve 3 connected with the fire extinction piping 2; a fire extinction hose 4 arranged in the fire extinction hydrant storage box 1 and including a base end connected with the fire extinction valve 3; a fire extinction nozzle 5 connected with a tip of the fire extinction hose 4. In the community fire hydrant which community citizens install voluntarily, a branch piping unit 7 capable of taking in water from the fire extinction piping 2 is connected to the fire extinction piping 2 and water can be taken in from the fire extinction piping 2 via the branch piping unit 7 in fire extinction activities and even in other occasions than the fire extinction activities.SELECTED DRAWING: Figure 1

Description

  The present invention mainly relates to improvement of civil hydrants used for disaster prevention of local residents, such as streets where many wooden houses are densely populated, and local disaster prevention, especially for fire fighting activities. The water can be taken without stopping the water discharge, and can respond to small fires caused by fire spread or fire, and the re-ignition after fire extinguishing. It is about citizen fire hydrant which added auxiliary fire extinguishing function that made it easy to take water as water).

  In general, there are cases where wooden houses are densely packed in areas where fire hydrants for disaster prevention are voluntarily installed for the purpose of preserving the streets.

  In such a place, not only a large-scale fire due to an earthquake or the like, even if it is a single fire, the fire point may spread to a plurality of places due to the spread of fire or similar fire.

The conventional fire hydrant that has been installed outdoors by local residents has a water discharge device such as a fire hose and a fire extinguishing nozzle in the fire hydrant storage box, but there is only one set of water discharge devices. Can only respond to fires.
For this reason, local residents use fire extinguishers and buckets to extinguish fires that occur in the vicinity of fires and fires.

However, the fire extinguisher has a problem in that it cannot perform fire extinguishing activities and cannot be used continuously when there is no medicine filled.
Moreover, since the discharge | release time of a fire extinguisher discharge | releases a chemical | medical agent in a comparatively short time about 15 to 30 seconds with a household fire extinguisher, an expert needs to be learned in order to extinguish effectively.

  On the other hand, in the case of fire extinguishing with water using a bucket, if the water source is secured, continuous fire extinguishing activities are possible, but if you use a faucet in the building, you must enter the building, which is dangerous. Will be accompanied.

  Furthermore, as a water source for fire extinguishing installed outdoors, there is an underground fire hydrant (see, for example, Patent Documents 1 to 3) embedded in the road. When opening and closing the valves, special tools are required, and there is a problem that it is difficult for local residents to use them effectively if they are not trained because of the high water pressure.

  In addition, even if extinguishing is once completed by fire extinguishing activities, in the case of a fire in a wooden house, there may be a fire in the interior. However, while the fire hydrant is extinguishing other places, it is impossible to extinguish a plurality of places at the same time and it must be left unattended.

JP 2002-013168 A JP 2000-120111 A JP 09-003987 A

  The present invention has been made in view of such problems, and its purpose is to perform water intake without stopping water discharge even during water discharge during fire extinguishing activities. Provide citizen fire hydrants with an auxiliary fire extinguishing function that can respond to re-ignition that occurs later and that can be easily taken out as water for daily use (excluding drinking water) during disasters. It is in.

  A civil fire hydrant with an auxiliary fire extinguishing function according to claim 1 of the present invention is connected to a fire hydrant storage box, a fire retardant pipe disposed in the fire hydrant storage box and connected to a water source, and a downstream end of the fire proof pipe. A fire hydrant valve, a fire hose housed in a fire hydrant storage box and connected to the fire hydrant valve at the base end, and a fire extinguishing nozzle connected to the distal end of the fire hose In the fire hydrant, a branch pipe unit that can take water from the fire extinguishing pipe is connected to the fire extinguishing pipe, and water can be taken from the fire extinguishing pipe through the branch pipe unit other than during fire extinguishing activities or fire extinguishing activities. is there.

  The civil fire hydrant to which the auxiliary fire extinguishing function according to claim 2 of the present invention is added is the invention according to claim 1, wherein the branch pipe unit is connected to the branch joint provided in the fire fighting pipe and the branch joint. It is characterized by comprising an on-off valve, a pressure reducing device connected to the outlet side or the inlet side of the on-off valve, and a hose connection fitting connected to the pressure reducing device or the on-off valve.

  According to a third aspect of the present invention, there is provided a civil fire hydrant having an auxiliary fire extinguishing function according to the second aspect of the present invention, wherein the decompression device is provided integrally with the short pipe connected to the on-off valve and the short pipe. And an orifice plate having an orifice hole.

  According to a fourth aspect of the present invention, there is provided a civil hydrant with an auxiliary fire extinguishing function according to the second aspect of the present invention, wherein the decompression device is connected to the on-off valve to form an annular retaining portion on the inner peripheral surface. An orifice ring having a short pipe and an orifice hole formed in a ring shape having a certain thickness by a rubber material or a synthetic resin material having elasticity arranged in the short pipe in close contact with the upstream side surface of the retaining portion It is characterized by being comprised by the pressure reduction orifice provided with these.

  The civil fire hydrant having an auxiliary fire extinguishing function according to claim 5 of the present invention is the plug according to claim 2, wherein the hose connection fitting is detachably connected to the insertion receptacle. The insertion fitting is composed of a cylindrical portion inserted into the receiving bracket, an annular protrusion provided on the outer peripheral surface of the distal end portion of the cylindrical portion and detachably locked to a plurality of claws provided on the receiving bracket, It consists of a cylindrical push ring that is fitted on the outer peripheral surface of the cylinder part so as to be slidable in the axial direction, and releases the engagement between each claw of the metal fitting and the annular projection of the cylinder part. It is characterized in that it can be separated from the bracket with a single touch.

  The civil fire hydrant to which the auxiliary fire extinguishing function according to claim 6 of the present invention is added is the invention according to claim 2, wherein the hose connection fitting is a cylindrical bamboo shoot hose connection fitting having an outer peripheral surface formed in a bamboo shoot shape. It is characterized in that a watering hose that is generally used can be detachably connected.

  The fire hydrant with the auxiliary fire extinguishing function of the present invention is connected to a fire extinguishing pipe connected to the primary side of the fire hydrant valve with a branch pipe unit that can take water from the fire extinguishing pipe. Even if a fire due to a fire spread or similar fire occurs in the vicinity of an object, by using the branch pipe unit, water can be taken for the initial response to the fire due to the fire spread or fire without stopping the water discharge work of the civil hydrant Therefore, effective response to multiple fires becomes possible.

  Since the civil fire hydrant with the auxiliary fire extinguishing function of the present invention is connected to the branch pipe unit to the fire extinguishing pipe, by taking water through the branch pipe unit from the fire extinguishing pipe, even for a fire that has started to reheat after extinguishing, The fire can be completely extinguished when it can be handled with a bucket of water, preventing the spread of damage.

The civil fire hydrant with the auxiliary fire extinguishing function of the present invention uses the water source of the fire extinguishing equipment, so it can secure a large volume of water, and it can be used for daily life (drinking water for disasters) even during fire extinguishing activities It is possible to easily obtain water, and to create a safe and secure area that is resistant to disasters.
Also, in the case of gravity pressurization method where the water source is higher than the fire hydrant, water can be taken without activating the pressurized water supply device such as a pump, so during firefighting activities such as watering and irrigation Other uses are also possible.
In addition, deterioration of water quality caused by stagnation of water over a long period of time (rotation, off-flavor, generation of algae, etc.) becomes a problem, but in the case of the gravity pressurization method where the water source does not use a pressurized water supply device such as a pump, By taking water from the branch pipe unit, water can be easily discharged on a daily basis by sprinkling or cleaning, so that deterioration of water quality can be prevented.

Since the civil hydrant with the auxiliary fire extinguishing function of the present invention has a decompression device built in the branch pipe unit, even if water is taken from the branch pipe unit when water is discharged by the civil hydrant, it is set to a small amount of water that does not affect the fire fighting activity. It is possible to prevent accidents caused by high-pressure water discharge during intake.
In addition, by installing a decompression device that matches the water supply pressure of the fire extinguishing pipe, it becomes possible to make the pressure and the amount of water the same level as in a general household water supply, making it extremely easy to handle.

  Since the civil fire hydrant to which the auxiliary fire extinguishing function of the present invention is added is constituted by the pressure reducing orifice of the pressure reducing device of the branch pipe unit, the structure is simple and the cost is low.

  The civil fire hydrant with the auxiliary fire extinguishing function of the present invention is connected to the bracket because the hose fitting provided on the branch pipe unit is composed of a plug-in fitting that is detachably connected to the plug-in receptacle. In addition, it can be separated from the metal fittings with a single touch, and can be securely and firmly connected to the metal fittings.

  The public fire hydrant with an auxiliary fire extinguishing function of the present invention has a hose connection fitting provided in the branch pipe unit comprising a cylindrical bamboo shoot hose connection fitting whose outer peripheral surface is formed into a bamboo shoot shape. The hose can be detachably connected, which is extremely convenient.

It is the front view which abbreviate | omitted the open / close door of the citizen fire hydrant which added the auxiliary fire extinguishing function which concerns on embodiment of this invention. It is a partially broken front view of a branch pipe unit. It is a partially broken front view which shows the other example of a branch pipe unit. It is a partially broken front view which shows the other example of a branch pipe unit.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a citizen fire hydrant with an auxiliary fire extinguishing function according to an embodiment of the present invention. It is installed and used for initial fire fighting and fire drills by local residents.

  That is, the public fire hydrant with the auxiliary fire extinguishing function includes a fire hydrant storage box 1 that can be opened and closed, a fire retardant pipe 2 that is disposed in the fire hydrant storage box 1 and connected to a water source, and a fire proof pipe as shown in FIG. 2, a fire hydrant valve 3 connected to the downstream end, a fire hose 4 housed in the fire hydrant storage box 1 and having a base end connected to the fire hydrant valve 3, and a distal end of the fire hose 4 The fire extinguishing nozzle 5, the hose guide 6 that is held in the fire hydrant storage box 1 in a state where the fire extinguishing hose 4 is wound up in a spiral shape, and water is drawn from the fire extinguishing pipe 2 connected to the fire extinguishing pipe 2. And a branch pipe unit 7 that can be used.

  Specifically, the fire hydrant storage box 1 includes a box-shaped main body whose front space is divided into a hose storage part S1, an alarm device storage part S2 and a fire pipe storage part S3, and a hose storage of the main body. A main door (not shown) for opening and closing the part S1, a fire alarm door (not shown) for opening and closing the alarm device storage part S2 of the main body, and a piping door (not shown) for opening and closing the fire extinguishing pipe storage part S3 of the main body It is installed and fixed outdoors in a standing posture.

  The fire-extinguishing pipe 2 is arranged in a standing posture in the fire-extinguishing pipe storage section S3 of the fire hydrant storage box 1, the base end side is connected to the water source, and the distal end side is connected to the hose storage section from the fire-extinguishing pipe storage section S3. Bent to the S1 side.

  In addition, the water source to which the fire extinguishing pipe 2 is connected may be a gravity-pressurized water source whose position is higher than the civil hydrant, or a water source using a pressurized water supply device such as a pump.

The fire hydrant valve 3 is disposed in the hose housing part S1 of the fire hydrant storage box 1, and its inlet is connected to the downstream end of the fire pipe 2 and connected to the water source via the fire pipe 2. Has been.
As the fire hydrant valve 3, a manual angle valve is used when the water source is a gravity pressurization type water source, and when the water source is a water source using a pressurized water supply device such as a pump, it is manually operated. An angle valve with a pump start switch is used.

  The fire hose 4 comprises a hose having a predetermined diameter and a predetermined length, and its base end is detachably connected to the discharge port of the fire hydrant valve 3 and its distal end. Is connected to a fire-extinguishing nozzle 5 having an opening / closing function.

  The hose guide 6 includes a lower frame 6a placed on the bottom plate of the fire hydrant storage box 1, and an upper frame 6b disposed above the lower frame 6a and fixedly supported on the back plate of the fire hydrant storage box 1. And a pair of guide rollers 6c rotatably supported in parallel with a certain distance between the lower frame 6a and the upper frame 6b, and the fire hose 4 is wound in a spiral shape It is held in the fire hydrant storage box 1 so that it can be pulled out from between the pair of guide rollers 6c.

  As shown in FIG. 2, the branch pipe unit 7 includes a branch joint 8 interposed in the fire extinguishing pipe 2, an on-off valve 9 connected to the branch joint 8, and a pressure reducing device 10 connected to the on-off valve 9. And a hose connection fitting 11 connected to the decompression device 10 so that water can be taken from the fire extinguishing pipe 2 not only during the fire extinguishing activity or during the fire extinguishing activity.

  The branch joint 8 is made of a cheese tube made of a metal material, and is formed of the same diameter as that of the fire extinguishing pipe 2 and both ends thereof are screwed and connected to the fire extinguishing pipe 2 respectively, and a vertical pipe portion 8a. It consists of a branch pipe part 8b which is branched and formed to have a diameter smaller than the diameter of the vertical pipe part 8a.

The opening / closing valve 9 is connected to the branch pipe portion 8b of the branch joint 8 at the inlet side, and by operating the handle 9a, the water in the fire extinguishing pipe 2 flows to the hose connection fitting 11 side, or the hose The flow to the connection fitting 11 side is stopped.
As the on-off valve 9, a conventionally known ball valve, cock, globe valve or the like is used.

The decompression device 10 is connected to the outlet side (secondary side) of the on-off valve 9 via a nipple 12 and decompresses the pressure of water flowing from the fire extinguishing pipe 2. The decompression device 10 uses a decompression orifice that performs decompression by restricting the flow of water.
In this embodiment, the pressure reducing device 10 is installed on the outlet side (secondary side) of the on-off valve 9, but in other embodiments, the pressure reducing device 10 is connected to the inlet side of the on-off valve 9 although not shown. You may install in (primary side).

  That is, the pressure reducing orifice constituting the pressure reducing device 10 has a short pipe 10a screwed to the outlet side of the on-off valve 9 via a nipple 12 and an orifice hole 10b 'integrally provided in the short pipe 10a. An orifice plate 10b is provided, and water is depressurized by passing through the orifice hole 10b '.

  The hose connection fitting 11 is connected to the decompression device 10 via a nipple 12 and an elbow pipe 13 so that a water intake hose 14 can be detachably connected. In FIG. 2 (FIG. 2), the hose connection fitting 11 includes a conventionally known Machino type (registered trademark) connection fitting composed of a insertion fitting 15 and a insertion fitting that is detachably connected thereto. Although the insertion fitting 11 is used, a connection fitting other than the Machino type (registered trademark) may be attached.

  That is, the insertion fitting 11 constituting the hose connection fitting 11 is attached to and detached from a cylindrical portion 11a inserted into the receiving fitting 15 and a plurality of claws 15c provided on the outer peripheral surface of the distal end portion of the cylindrical portion 11a. An annular protrusion 11b that is freely locked, and an outer peripheral surface of the cylindrical portion 11a that is slidably fitted in the axial direction so as to release the engagement between the claws 15c of the metal fitting 15 and the annular protruding portion 11b of the cylindrical portion. It consists of a cylindrical push ring 11c, and the base end portion side of the cylindrical portion 11a is screwed into the elbow pipe 13.

  The insertion-type metal fitting 15 has a cylindrical connecting portion 15a ′ connected to the water intake hose 14 at one end portion, and is connected to the connecting portion 15a ′ at the other end portion so as to be a tube of the insertion fitting 11. A metal fitting body 15a having a cylindrical receiving portion 15a ″ into which the portion 11a and the annular protrusion 11b are inserted, a cylindrical fastening ring 15b screwed to the outer peripheral surface of the receiving port portion 15a ″ of the metal fitting main body 15a, A plurality of arc-shaped claws 15c that are arranged at equal angles on the receiving portion 15a ″ and can protrude inward of the receiving portion 15a ″, and a plurality of claws 15c that press and urge each inward of the receiving portion 15a ″. The plate spring 15d and a U-shaped packing 15e fitted into the inner peripheral surface of the receiving port 15a ″.

  Thus, when performing a fire fighting operation using the civil fire hydrant having the auxiliary fire extinguishing function, first, the operator opens the main door of the fire hydrant storage box 1 and holds the extinguishing nozzle 5 and the extremity of the fire hose 4. The fire hydrant valve 3 is opened in a state where the water is discharged from the fire hydrant storage box 1 and water discharge from the fire extinguishing nozzle 5 is stopped. Next, the fire extinguishing hose 4 is pulled out from the fire hydrant storage box 1 through the hose guide 6 with the fire extinguishing nozzle 5 that stops water discharge, and approaches the fire point. Thereafter, the tip of the fire extinguishing nozzle 5 is set toward the fire point, and in this state, the fire extinguishing nozzle 5 is opened to discharge water and fire extinguishing activities are performed.

  The fire hydrant with the auxiliary fire extinguishing function can be used to spread fire or fire by using the branch pipe unit 7 when a fire is caused by fire or fire in another place where the fire is extinguished. Can respond to fire caused by.

  That is, the water intake hose 14 is connected to the hose connection metal fitting 11 of the branch pipe unit 7 via the receiving metal fitting 15, and the tip of the water intake hose 14 is inserted into the bucket, and the on-off valve 9 is opened in this state. . Then, a part of water in the fire extinguishing pipe 2 is taken into the bucket through the branch pipe portion 8b of the branch joint 8, the on-off valve 9, the nipple 12, the pressure reducing device 10, the nipple 12, the elbow pipe 13 and the water intake hose 14. The You can extinguish a fire with a bucket of water by carrying it to a fire place by spreading fires or fires and sprinkling water toward the fire point. As a result, water can be taken for the initial response to fire due to fire spread or fire without stopping the water discharge operation of the civil hydrant, enabling effective response to multiple fires.

  In addition, for fires that have started to relapse after extinguishing, by taking water from the fire extinguishing pipe 2 through the branch pipe unit 7, it is possible to completely extinguish the fire at a time when it can be handled with water of a capacity of about a bucket. Expansion can be prevented.

Furthermore, since the decompression device 10 is incorporated in the branch pipe unit 7, even if water is taken from the branch pipe unit 7 when the public fire hydrant is discharged, it can be set to a small amount of water that does not affect the fire fighting activity. Can prevent accidents caused by high-pressure water discharge.
Moreover, by installing the decompression device 10 that matches the water supply pressure of the fire extinguishing pipe 2, it becomes possible to make the pressure and the amount of water the same as those of ordinary household water, and it becomes extremely easy to handle.

And since the citizen fire hydrant having the auxiliary fire extinguishing function uses the water source of the fire extinguishing equipment, it can secure a large amount of water. It is possible to easily obtain water, and to create a safe and secure area that is resistant to disasters.
Also, in the case of gravity pressurization method where the water source is higher than the fire hydrant, water can be taken without activating the pressurized water supply device such as a pump, so during firefighting activities such as watering and irrigation Other uses are also possible.
In addition, deterioration of water quality caused by stagnation of water over a long period of time (rotation, off-flavor, generation of algae, etc.) becomes a problem, but in the case of the gravity pressurization method where the water source does not use a pressurized water supply device such as a pump, By taking water from the branch pipe unit 7, it is possible to easily discharge water by watering or cleaning on a daily basis, so that deterioration of water quality can be prevented.

  FIG. 3 shows another example of the branch pipe unit 7. The branch pipe unit 7 is obtained by changing the structure of the pressure reducing device 10, and includes components other than the pressure reducing device 10 (branch joint 8, on-off valve 9, hose connection). Since the metal fittings 11 and the like have the same structure as that shown in FIG. 2, detailed description thereof is omitted here.

The pressure reducing device 10 of the branch pipe unit 7 is connected to the outlet side of the on-off valve 9 via a nipple 12 and has a short pipe 10a in which an annular retaining portion 10c is formed on the inner peripheral surface. An orifice ring 10d having an orifice hole 10d 'disposed in close contact with the upstream side surface of the stopper 10c and formed in a ring shape having a certain thickness by a rubber material or a synthetic resin material having elasticity. The water is reduced in pressure by passing through the orifice hole 10d '.
In this decompression device 10, compression or bending deformation occurs in the orifice ring 10d due to the pressure difference between the primary side and the secondary side acting on the orifice ring 10d, and the diameter of the orifice hole 10d 'changes according to the fluctuation of the pressure on the primary side. Therefore, even if the pressure fluctuates, the pressure can be reduced to a substantially constant pressure.
The installation location of the decompression device 10 may be on the inlet side (primary side) of the on-off valve 9.

  FIG. 4 shows still another example of the branch pipe unit 7. The branch pipe unit 7 is obtained by changing the structure of the hose connection fitting 11, and the parts other than the hose connection fitting 11 (the branch joint 8, the on-off valve 9). The decompression device 10 and the like are configured in the same structure as that shown in FIG.

The hose connection fitting 11 of the branch pipe unit 7 is composed of a cylindrical bamboo shoot hose connection fitting 11 having an outer peripheral surface formed in a bamboo shoot shape, so that a watering hose 16 generally used at home can be detachably connected. It is a thing.
Since the hose connection fitting 11 is composed of a cylindrical bamboo shoot hose connection fitting 11, a watering hose 16 generally used at home can be detachably connected, which is extremely convenient. Moreover, it is also possible to use a resin connection fitting attached to a tap tap that is generally used.

  In the above embodiment, the fire hydrant storage box 1 is divided into the hose storage part S1, the alarm device storage part S2, and the fire pipe storage part S3. However, in other embodiments, the fire hydrant storage box 1 The inside of 1 may be divided into two, or the inside of the fire hydrant storage box may be combined into one space.

  In the above embodiment, the fire hose 4 is spirally wound using the hose guide 6 and held in the fire hydrant storage box 1. In other embodiments, the front center A fire extinguishing hose 4 may be housed and held in a spirally wound state from the outside to the inside of the drum using a drum (not shown) having a circular opening at a position, or a hose. Instead of using the guide 6 and the drum, the fire hose 4 may be directly housed and held in the fire hydrant storage box 1 in a spiral state.

  Furthermore, in the above embodiment, the on-off valve 9 and the pressure reducing device 10 are screwed and connected to each other by the nipple 12, and the pressure reducing device 10 and the hose connection fitting 11 are screwed and connected to each other by the nipple 12 and the elbow pipe 13. In the embodiment, the on-off valve 9 and the pressure reducing device 10 may be directly connected to each other, and the pressure reducing device 10 and the hose connection fitting 11 may be directly connected to each other.

  Further, the present invention is not construed as being limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  1 is a fire hydrant storage box, S 1 is a hose storage part, S 2 is an alarm device storage part, S 3 is a fire pipe storage part, 2 is a fire pipe, 3 is a fire hydrant valve, 4 is a fire hose, 5 is a fire nozzle, 6 Is a hose guide, 6a is a lower frame, 6b is an upper frame, 6c is a guide roller, 7 is a branch pipe unit, 8 is a branch joint, 8a is a vertical pipe, 8b is a branch pipe, 9 is an on-off valve, 9a is a handle 10 is a pressure reducing device, 10a is a short pipe, 10b is an orifice plate, 10b 'is an orifice hole, 10c is a retaining portion, 10d is an orifice ring, 10d' is an orifice hole, 11 is a hose connection fitting (insertion fitting, bamboo shoot type) Hose connector), 11a is a cylindrical portion, 11b is an annular protrusion, 11c is a push ring, 12 is a nipple, 13 is an elbow pipe, 14 is a water intake hose, 15 is a receiving metal fitting, 15a is a metal fitting body, and 15a ' Binding portion, 15a "is socket portion, 15b are tightened wheels, 15c nail, 15d are leaf springs, 15e are U-type packing, watering hose 16.

Claims (6)

  A fire hydrant storage box (1), a fire hydrant pipe (2) disposed in the fire hydrant storage box (1) and connected to a water source, and a fire hydrant valve (3) connected to the downstream end of the fire fighting pipe (2) ), A fire hose (4) housed in the fire hydrant storage box (1) and having a proximal end connected to the fire hydrant valve (3), and a fire extinguisher connected to the distal end of the fire hose (4) A fire hydrant equipped with a nozzle (5) and installed locally by local residents, and connecting a branch pipe unit (7) that can take water from the fire extinguishing pipe (2) to the fire extinguishing pipe (2) In addition, a fire hydrant with an auxiliary fire extinguishing function that can take water from the fire extinguishing pipe (2) through the branch pipe unit (7).   The branch pipe unit (7) includes a branch joint (8) interposed in the fire extinguishing pipe (2), an on-off valve (9) connected to the branch joint (8), and an outlet side of the on-off valve (9) The pressure-reducing device (10) connected to the inlet side and the hose connection fitting (11) connected to the pressure-reducing device (10) or the on-off valve (9) are provided. Citizen fire hydrant with auxiliary fire extinguishing function.   The pressure reducing device (10) includes a short pipe (10a) connected to the on-off valve (9), an orifice plate (10b) integrally provided in the short pipe (10a) and having an orifice hole (10b '). The civil fire hydrant with an auxiliary fire extinguishing function according to claim 2, wherein the cigarette fire hydrant has an auxiliary fire extinguishing function.   The pressure reducing device (10) includes a short pipe (10a) connected to the on-off valve (9) to form an annular retaining part (10c) on the inner peripheral surface, and a retaining part (10c) in the short pipe (10a). And an orifice ring (10d) having an orifice hole (10d ') formed in a ring shape having a certain thickness by a rubber material or a synthetic resin material having elasticity, arranged in close contact with the upstream side surface of The civil fire hydrant having an auxiliary fire extinguishing function according to claim 2, wherein the cigarette fire hydrant is provided with a decompression orifice.   The hose connection fitting (11) comprises a plug-in type fitting (11) that is detachably connected to the plug-in type fitting (15), and the fitting (11) is inserted into the fitting (15). A cylindrical portion (11a), and an annular protrusion (11b) which is provided on the outer peripheral surface of the tip portion of the cylindrical portion (11a) and is detachably locked to a plurality of claws (15c) provided on the receiving metal fitting (15). And an outer peripheral surface of the cylindrical portion (11a) that is slidably fitted in the axial direction so that the claws (15c) of the metal fitting (15) and the annular protrusion (11b) of the cylindrical portion (11a) are locked. The auxiliary fire extinguishing according to claim 2, comprising a cylindrical push ring (11c) to be removed and configured to be able to be connected to the metal fitting (15) and separated from the metal fitting (15) with one touch. Civil fire hydrant with added functionality.   The hose connection fitting (11) is composed of a cylindrical bamboo shoot hose connection fitting (11) whose outer peripheral surface is formed in a bamboo shoot shape, so that a commonly used watering hose (16) can be detachably connected. A civil fire hydrant with an auxiliary fire extinguishing function according to claim 2.

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