JP5147791B2 - Simple fire extinguisher - Google Patents

Description

  The present invention relates to a simple fire extinguisher that can be easily reused.

  A stock pressure fire extinguisher placed in a kitchen of a general household is a main body container, a main body container filled with a gas for pressurization such as compressed air or compressed nitrogen gas for injecting the fire extinguishing agent together with a powder or liquid extinguishing agent A valve attached to the mouth of a gas pipe, a siphon tube attached to the valve to release a fire extinguishing agent, a fire extinguisher hose connected to the valve, a nozzle attached to the tip of the fire extinguisher hose, and an open / close attached to the valve A fixed lever and a movable lever for operation, and a safety stopper attached between the fixed lever and the movable lever are included (see, for example, Patent Document 1).

In a normal state (when not in use), the valve body provided at the lower end of the valve stem is pulled up together with the valve stem by a coil spring and is pressed against the opening end (valve seat) on the siphon tube side of the valve so that the opening end is The upper end of the valve stem is opposed to the pressing portion of the movable lever.
When using a fire extinguisher, pull out the safety stopper, grasp the nozzle with one hand to remove it from the main body container, hold the fixed lever and movable lever with the other hand, lift the main body container, and fire the nozzle. Squeeze the fixed lever and movable lever while facing the object, and push down the valve stem with the pressing part to open the open end of the valve. Accordingly, the pressurizing gas discharges the extinguishing agent from the nozzle through the siphon tube and the hose to extinguish the object to be extinguished.

JP 2003-164539 A (page 3, FIG. 1)

  In the animal pressure fire extinguisher having the above configuration, once the safety plug is pulled out and put into use, it cannot be stopped until the pressurization gas and the fire extinguishing agent are completely released, and a small amount of the fire extinguisher in the initial stage of misfire. Even if the fire extinguishing agent is simply extinguished, the release of the pressurizing gas and the extinguishing agent cannot be stopped. For this reason, there are cases where post-processing is difficult due to contamination of the periphery due to extinguishing chemicals released more than necessary. In addition, even if the safety stopper is accidentally pulled out and put into use, the release of the fire-extinguishing agent cannot be stopped as described above, and post-treatment with the fire-extinguishing agent is difficult. There is also a possibility.

In order to open the valve by grasping the nozzle with one hand, lifting the main body container by holding the fixed lever and the movable lever with the other hand, and clamping the movable lever while turning the nozzle toward the object to be extinguished. It is difficult to accurately aim the fire extinguishing target. For this reason, a fire extinguishing agent cannot be effectively released to a fire extinguishing target.
Furthermore, when reusing a fire extinguisher after using a fire extinguisher, it is necessary to overhaul a specialist and fill it with a fire extinguishing agent or a pressurizing gas, which not only increases costs. It takes time. For this reason, it is practically disposable and is uneconomical. Moreover, depending on the fire extinguishing target, mere water may be sufficient as a fire extinguishing agent.

  An object of the present invention is to provide a simple fire extinguisher that can arbitrarily stop the discharge of the fire extinguishing liquid and can be repeatedly filled with the fire extinguishing liquid easily.

In order to solve the above-described problems, a simple fire extinguisher according to the present invention is:
A body container;
An accumulator of a breathable bladder in which the compressed gas is housed and filled in the main body container, and the inner peripheral surface is provided with a plurality of breaths along the longitudinal direction at equal intervals in the circumferential direction ;
An injection valve connected to the body container;
A fire extinguishing liquid that is injected and pressurized into the main body container while compressing the accumulator from the injection valve;
A discharge valve connected to the main body container, closed by the pressure of the pressurized fire extinguishing liquid, and releasing the fire extinguishing liquid when opened;
A lever for opening the discharge valve;
A nozzle connected to the outlet side of the discharge valve for discharging the fire-extinguishing liquid ;
A throttle valve that is provided in a passage between the discharge valve and the nozzle, adjusts the passage area according to the pressure of the fire extinguishing liquid, and suppresses a change in the flow rate of the fire extinguishing liquid discharged from the nozzle. It is characterized by that.

  The fire extinguishing liquid filled in the main body container is pressurized by compressing the accumulator. When a user uses a fire extinguisher, when the lever is operated (pulled) toward the object to be extinguished and the discharge valve is opened, the accumulator expands to discharge the fire extinguishing liquid from the nozzle. When the user returns the lever and closes the discharge valve, the extinguishing of the fire extinguishing liquid stops. Thereby, it can prevent discharging | emitting a fire extinguishing liquid unnecessarily. After using the fire extinguisher, that is, after discharging the fire extinguishing liquid, the user injects (fills) the fire extinguishing liquid from the injection valve. The fire extinguisher can be reused repeatedly by using an accumulator as means for pressurizing the fire extinguishing liquid and allowing the fire extinguishing liquid to be injected (filled) through the injection valve.

Diaphragm Riben is in aperture control according to the pressure of the extinguishing fluid in the body vessel to suppress the release of throttled by extinguishing fluid at high discharge initial-pressure, the diaphragm and the pressure decreases as the release of fire extinguishing liquid Opens and increases the amount of fire extinguishing liquid released. As a result, it is possible to suppress a sudden change (decrease) in the discharge flow rate of the fire extinguishing liquid and discharge the fire extinguishing liquid.

  According to the present invention, it is possible to arbitrarily stop the discharge of the fire extinguishing liquid by pressurizing the fire extinguishing liquid with the accumulator accommodated in the main body container and opening the discharge valve by operating the lever. Further, the fire extinguishing liquid can be easily injected from the injection valve into the main body container, and the fire extinguisher can be reused repeatedly, which is economical. Moreover, the configuration of the fire extinguisher is simple.

It is a schematic block diagram of the simple fire extinguisher which concerns on this invention. It is sectional drawing of the main body container of the simple fire extinguisher shown in FIG. FIG. 3A is a cross-sectional view taken along the arrow III-III of the accumulator housed in the main body container and the main body container shown in FIG. 2, FIG. 3A shows the natural state of the accumulator, and FIG. FIG. 3C shows a state in which the accumulator is compressed to about 1/4. It is a detailed sectional view of the hand spray gun shown in FIG. It is an enlarged view of the throttle valve accommodated in the hand spray gun shown in FIG. It is explanatory drawing which shows the action | operation of the throttle valve shown in FIG. It is explanatory drawing of the safety pin of the lever of the hand spray gun shown in FIG.

  Hereinafter, the simple fire extinguisher which concerns on one Embodiment of this invention is demonstrated based on drawing. FIG. 1 shows a schematic configuration of a simple fire extinguisher of the present invention. The simple fire extinguisher 1 is connected to a main body container 2 filled with a fire extinguishing liquid W and a main body container 2 via a hose 4, and is connected to the main body container 2. The hand spray gun 3 for injecting (filling) the fire extinguishing liquid W and discharging (spouting) the fire extinguishing liquid W in the main body container 2 toward the fire extinguishing target.

The main body container 2 includes a container 21, an accumulator 25 for pressurizing and discharging (spouting) the fire extinguishing liquid W filled in the container 21, and an air supply valve 26 for injecting (filling) compressed gas into the accumulator 25. I have.
The body 31 of the hand spray gun 3 includes an injection valve 41 for injecting the fire-extinguishing liquid W, a discharge valve 42 for discharging the fire-extinguishing liquid W, and a fire-extinguishing liquid W that is discharged according to the pressure (hydraulic pressure) of the fire-extinguishing liquid W. A throttle valve 45 for adjusting the flow rate of the gas, a nozzle 46 for discharging the fire extinguishing liquid W, a pressure gauge 47 for detecting and displaying the pressure of the fire extinguishing liquid W, and a lever (trigger) 48 for opening the discharge valve 42 are integrally provided. ing.

  As shown in FIGS. 1 and 2, the container 21 has both ends of a vertically long cylindrical shape that is substantially hemispherical, and a cylindrical stand 22 for placing the container 21 upright is concentrically arranged on the outer peripheral surface. It is fixed. A cylindrical connection fitting 23 for connecting to the hose 4 is provided in the center of the upper surface 21a of the container 21, and an internal thread is engraved on the inner peripheral surface thereof. A large-diameter hole 21 c is provided at the center of the bottom surface 21 b of the container 21. The hole 21c has a peripheral opening extending downward to form a cylindrical opening 21d, an annular groove 21e is formed concentrically on the inner end face of the opening, and an external thread is engraved on the outer peripheral surface. A handle 24 is attached to the outer peripheral edge of the upper surface 21a.

  The accumulator 25 is a pleated bladder (rubber bag) and has a vertically long shape that is substantially the same shape as the container 21, and has a size such that the outer peripheral surface comes into contact with the inner peripheral surface of the container 21 (hereinafter, simply “ Called "Blada 25"). The opening 25a of the bladder 25 is narrowed and narrowed so as to be able to come into contact with the inner peripheral surface of the opening 21d of the container 21 and has substantially the same length as the opening 21d. The annular groove of the opening 21d is formed on the outer peripheral surface. A flange 25b that is press-fitted and fluid-tightly fitted to 21e is provided.

In FIG. 1, the accumulator (bladder) 25 is shown as an elongated bag-like bladder for easy understanding, and when filled with the fire extinguishing liquid W, the accumulator (bladder) 25 is compressed as shown by the solid line from the state indicated by the two-dot chain line to be round and small. This shows the state.
As shown in FIG. 2, the bladder 25 is inserted into the container 21 through the opening 21d and accommodated, and the flange 25b is press-fitted into the annular groove 21e, and is fluid-tight by an air supply valve 26 that is screwed into the opening 21d. It is fixed to. The air supply valve 26 is for filling the bladder 25 with compressed gas such as compressed air or compressed nitrogen gas, and is a one-way valve constituted by an air supply valve body 27 and an air valve comb 28.

  As shown in FIG. 3 (a), the bladder 25 is provided with a plurality of, for example, three locations at the same interval in the circumferential direction on the inner circumferential surface, for example, at three locations, along the longitudinal direction (axial direction) 25c. The bladder 25 is deformed by the differential pressure between the internal and external pressures and has a cylindrical shape when in the natural state shown in FIG. 2 and FIG. 3A, and when compressed to about 1/2, the two points in FIG. As shown in the chain line 25 'and FIG. 3 (b), the breezes 25c are crushed into a curved triangular shape having a round cross section along the longitudinal direction (axial direction), deformed, thinned, and compressed to about 1/4. When this is done, it is crushed into a curved triangular star shape with a round cross section as shown in FIG. The fire-extinguishing liquid W is pressurized and released by the gas compressed in Step 2. Examples of the compressed gas to be contained in the bladder 25 include compressed air and compressed nitrogen gas.

The pressure (gas pressure) of the compressed gas confined in the bladder 25 is, for example, about 0.3 MPa (first predetermined pressure), and the bladder 25 is compressed to about 1/3, and the internal pressure of the bladder 25 is less than 1 MPa, for example, When the pressure is 0.9 to 0.95 MPa (second predetermined pressure), the fire extinguishing liquid can be discharged at a pressure of about 0.95 to 0.3 MPa.
As shown in FIG. 4, the main body 31 of the hand spray gun 3 is formed with a grip 32 and a barrel 33 having an angle of about 120 °, for example, and a large-diameter hole 34 and a small-diameter hole 35 are formed in these connecting portions. It is concentrically connected and penetrated. The hole 34 opens rearward (right side in the figure), and the hole 35 opens forward (left side in the figure). The grip 32 is provided with a passage 36 along the longitudinal direction, and one end (lower end) opens to the lower end surface of the grip 32, and the other end (upper end) opens near the communicating portion of the hole 34 with the hole 35. Communicated. An internal thread is engraved on the inner peripheral surface of the opening end of the passage 36 (the lower end surface of the grip 32).

The barrel 33 is provided with a passage 37 along the longitudinal direction. One end (front end) is opened at the front end of the barrel 33, and the other end (rear end) is opened near the communicating portion of the hole 35 with the hole 34. Communicated. A large-diameter hole 38 is provided concentrically with the passage 37 at the tip of the barrel 33, and an internal thread is engraved on the inner peripheral surface on the opening side of the hole 38.
The barrel 33 is provided with a passage 39 having a considerably smaller diameter than the passage 37 along the passage 37, one end of which opens to the hole 34 and communicates with the other end, and the other end opens to the approximate center of the hole 38. Has been. By making the passage 39 considerably smaller in diameter than the passage 37, the passage 39 is given a kind of squeezing action so as to absorb the pressure fluctuation on the hole 34 side. Further, a screw hole 40 having one end opened in the hole 34 and the other end opened upward is provided at an upper position near the base of the barrel 33.

  The fire-extinguishing liquid injection valve 41 and the discharge valve 42 are both one-way valves, and are accommodated in the hole 34 and arranged back to back. A spring 43 is contracted between the injection valve 41 and the discharge valve 42. Has been. The injection valve 41 is slidably inserted into a shaft hole 44a of a valve holder 44 in which the valve shaft 41a is liquid-tightly attached to the opening of the hole 34, and the valve contact surface of the valve umbrella is the valve seat of the valve holder 44. Is liquid-tightly pressed. The valve shaft 41a has an equal interval in the circumferential direction, and a plurality of grooves 41b are formed along the axial direction. It is possible to inject a fire extinguishing liquid into the hole 34 from the outside through the shaft hole 44a and the groove 41b. Has been.

In the discharge valve 42, the valve shaft 42a is inserted into the small-diameter hole 35 so as to be slidable in the axial direction, the tip portion slightly protrudes from the opening end of the hole 35, and the valve contact surface of the valve umbrella is the holes 34 and 35. The valve seat formed in the continuous portion is in pressure-tight contact with the valve seat. An O-ring 61 is mounted on each of the injection valve 41, the valve contact surface of the discharge valve 42, and the valve shaft 42a of the discharge valve 42 to ensure liquid tightness.
A throttle valve 45 is accommodated in the hole 38 of the barrel 33. As shown in FIG. 5, the throttle valve 45 includes a pipe 51, a holder 52 concentrically attached to the outer peripheral surface of both ends of the pipe 51, a concentrically disposed outside the pipe 51, and both ends fixed to the holder 52. The pipe 53 is formed. The pipe 51 has a smaller diameter than the passage 37, and the pipe 53 has a slightly larger diameter than the passage 37.

  The holder 52 has a shape in which a flange 52b is provided substantially at the center of the outer peripheral surface of the cylindrical portion 52a, and is fixed to the end portion of the outer peripheral surface of the pipe 51 by a plurality of spokes (radiation) 52c provided on the inner peripheral surface. . The inner diameter of the cylindrical portion 52 a is the same as that of the passage 37, and the outer diameter of the flange 52 b is slightly smaller than the inner diameter of the hole 38. Both end portions of the pipe 53 are externally fitted and fixed to the cylindrical portion 52a. The pipe 51 is formed of a highly rigid member such as a metal member, and the pipe 53 is formed of an elastic member such as a rubber member.

  The pipe 53 has a cylindrical shape as shown in the figure by an elastic force when no pressure is applied from the outside. An annular passage 54 is formed between the inner pipe 51 and the outer pipe 53, and holders 52 on both sides are formed. The fluid can flow between the spokes 52c. Therefore, the throttle valve 45 ensures the flow of the fluid (extinguishing liquid) through the inner pipe 51 and the annular passage 54. When pressure is applied from the outside, the pipe 53 is crushed and reduced in diameter accordingly, and the annular passage 54 becomes narrow. Therefore, the flow rate of the fire extinguishing liquid flowing through the annular passage 54 is suppressed.

  When the external force applied to the pipe 53 increases and the inner peripheral surface of the pipe 53 comes into close contact with the outer peripheral surface of the inner pipe 51 as shown by a two-dot chain line, the annular passage 54 is completely closed. In this state, the fire extinguishing liquid flows only through the inner pipe 51. When the external pressure applied to the pipe 53 is reduced, the pipe 53 is restored to the original cylindrical shape by the elastic force, and the annular passage 54 is formed. As a result, the throttle valve 45 can adjust the flow rate of the digestive fluid according to the pressure applied to the pipe 53 from the outside, that is, the pressure of the digestive fluid.

  As shown in FIG. 6, the throttle valve 45 is configured such that the holders 52 at both ends are liquid-tightly inserted into the hole 38 of the barrel 33 through the O-ring 55. A nozzle (discharge nozzle) 46 is screwed and attached to the tip of the barrel 33 in a liquid-tight manner. In this state, in the throttle valve 45, the inner pipe 51 and the annular passage 54 communicate with the passage 37. An annular space 56 is formed in a liquid-tight manner between the outer pipe 53 and the passage 37 and communicates with the passage 39.

  The pressure gauge 47 is screwed and attached in a liquid-tight manner to a screw hole 40 provided at an upper position near the base of the barrel 33. As described above, the pressure of the compressed gas confined in the bladder 25 is set to about 0.3 MPa, and the bladder 25 is compressed to about 1/3 and the internal pressure of the bladder 25 is set to 0.9 to 0.95 MPa. In this case, the pressure gauge 47 can measure up to 1 MPa. The scale of the pressure gauge 47 is displayed, for example, in increments of 0.1 MPa from 0 to 1.0 MPa, and a red zone is set between the scale of 0.95 MPa and the scale of 1.0 MPa. As a result, the internal pressure in the bladder 25 can be suppressed to less than 1.0 MPa at maximum. An example of the pressure gauge 47 is an inexpensive Bourdon tube pressure gauge.

  As shown in FIG. 4, a lever (trigger) 48 for opening the discharge valve 42 is provided near the base of the barrel 33 of the hand spray gun 3. The lever 48 has a substantially square U shape when viewed from the end, and the upper ends of both side portions are pivotally supported by a pin 63 below the base of the barrel 33 so as to be rotatable. A pressing portion 48a is provided at the bottom so as to face the end surface of the valve shaft 42a of the discharge valve 42 protruding from the hole 35 in the connecting portion of the grip 32 and the barrel 33.

  The stopper 49 has a substantially square U shape when viewed from the end, and can be accommodated in the lever 48. The lower ends of both sides are pivotally supported by the lower end of the lever 48 by pins 64, and The upper end of the grip 32 is locked by a snap pin 65 as a safety pin with a bracket 32a formed integrally with the grip 32 at a substantially central position. As shown in FIG. 7, the snap pin 65 has a substantially hairpin shape, the pin 65a on one side is straight, and the substantially central portion 65c of the pin 65b on the other side is the bracket 32a from the width of the stopper 49 and the center of the pin 65a. The outer peripheral portion is bent in a substantially convex shape with a distance away from the outer peripheral portion.

  The snap pin 65 is formed of a spring member having elasticity, and a straight pin 65a on one side is inserted through the stopper 49 and the pin hole of the bracket 32a, and the tip of the pin 65b on the other side resists springiness. Then, after being pushed over and overcoming the outer peripheral surface of the tip of the stopper 49 and the thickness of the bracket 32a, the original shape is restored, and the central portion 65c engages with the outer peripheral surface of the tip of the stopper 49 and the outer surface of the bracket 32a. It is mounted as shown by a two-dot chain line. This prevents the snap pin 65 from being inadvertently disconnected. When removing the snap pin 65, the user may pull the base portion 65d and remove the central portion 65c of the pin 65b from the stopper 49 and the bracket 32a against the spring property.

  The lever 48, the stopper 49, the grip 32, and the barrel 33 form a fixed chain by the pins 63 and 64 and the snap pin 65, and the grip 32 and the barrel 33 (link 1) are fixed links. 48 (link 2) and stopper 49 (link 3) cannot move. That is, the lever 48 cannot be pulled in the direction of arrow A in FIG. Thereby, the safety mechanism of the lever 48 can be formed with a simple structure.

  2 and 4, the connection fitting 5 at one end of the hose 4 is liquid-tightly connected to the connection fitting 23 of the container 21, and the connection fitting 6 at the other end is connected to the hand spray gun 3. A thread-tight connection is made to the threaded portion of the opening end of the passage 36 that opens to the lower end surface of the grip 32. Thereby, the container 21 and the hand spray gun 3 are connected. A ring-shaped latch (not shown) is provided on the side of the grip 32 of the hand spray gun 3, and the hand spray gun 3 is held on the container 21 by being hooked on a hook (not shown) provided on the side surface of the container 21. I am doing so. Thereby, while carrying the simple fire extinguisher 1 easily, the hand spray gun 3 can be easily removed from the container 21.

  When the container 21 shown in FIG. 2 is empty, the bladder 25 is filled with, for example, compressed air from the air supply valve 26 to have an internal pressure of 0.3 MPa (first predetermined pressure). It swells as shown in 3 (a). Note that the state of the bladder 25 in this state is referred to as a natural state. Further, the injection valve 41 and the discharge valve 42 are closed as shown in FIG. 4, and the throttle valve 45 is opened as shown in FIG. 6 (a).

  In this state, a fire extinguishing liquid, for example, tap water, is injected (filled) from the injection valve 41 of the hand spray gun 3. Household tap water can be used as the fire extinguishing liquid. Household tap water has a water pressure that varies from region to region and is approximately 0.098 MPa to 0.98 MPa. Therefore, it is possible to fill tap water directly from a tap in an area where the water pressure is high. Further, it is preferable to use a simple water pump or the like in an area where the water pressure is extremely low, or to fill in an area where the water pressure is high.

  As the fire extinguishing liquid (tap water) is filled (water injection) into the container 21, the pressure gradually causes the bladder 25 to gradually move as shown by the two-dot chain lines 25 'and 25 "in FIG. 2 and FIGS. 3 (b) and 3 (c). The filling is stopped when the pointer of the pressure gauge 47 reaches 0.9 to 0.95 MPa, and the pressure in the container 21 at this time is 0.9 to 0.95 MPa. 1 and 3C, the water W as the fire extinguishing liquid is in a filling state corresponding to the filling amount.

  Further, along with the water injection, water is injected into the annular space 56 of the hole 38 in which the throttle valve 45 is accommodated through the passage 37 shown in FIG. 4, and accordingly, the outer pipe 53 is shown in FIGS. 6 (b) and 6 (c). As shown in the figure, it is pressed and crushed, its inner peripheral surface is in close contact with the outer peripheral surface of the inner pipe 51, and the annular passage 54 is closed. That is, the opening area of the throttle valve 45 is the thickness of the pipe 51 when the container 21 is fully filled with the fire extinguishing liquid (water) W.

  Now, for example, when using the simple fire extinguisher 1 in the initial stage of misfire due to tobacco mistreatment, the user pulls out the snap pin 65 and engages the grip 32 of the hand spray gun 3 with the stopper 49. To release. Thereby, the lever 48 can be operated. Next, the user holds the handle 24 of the container 21, grasps the grip 32 of the hand spray gun 3, puts his finger on the lever 48, and points the nozzle 46 toward the object to be extinguished. In this case, by using the hand spray gun 3, the nozzle 46 can be easily and accurately directed at the object.

Next, when the user pulls the lever 48 against the spring force of the spring 43 of the discharge valve 42, the discharge valve 42 opens and the fire extinguishing liquid (water) W in the container 21 flows into the hose 4 and the hand spray 3. Water is discharged (injected) from the nozzle 46 through the passage 36, the passage 37, and the pipe 51 of the throttle valve 45, for example, in a full cone shape.
As the fire extinguishing liquid (water) W is released, the pressure (water pressure) in the container 21 gradually decreases, and the discharge amount from the nozzle 46 decreases. As the pressure in the container 21 decreases, the pressure (water pressure) applied to the pipe 53 of the throttle valve 45 decreases, and the pipe 53 is elastically moved from the state of FIG. 6C to FIG. 6B and FIG. The diameter is expanded to the state of a) and the original pipe diameter (thickness) is restored. That is, the throttle valve 45 is gradually opened. Accordingly, the fire extinguishing liquid (water) W is supplied to the nozzle 46 through the annular passage 54 between the pipe 51 inside the throttle valve 45 and the pipe 53 outside. As a result, the fire extinguishing liquid (water) W is supplied to the nozzle 46 from the pipe 51 and the annular passage 54, and a decrease in the flow rate (water amount) of the fire extinguishing liquid W to be released is suppressed. Thereby, the change of the flow volume (water amount) of the fire-extinguishing liquid W discharge | released to the fire extinguishing target object from the nozzle 46 can be suppressed few.

  When it is confirmed that the object to be extinguished has been extinguished by the initial fire extinguishing, when the lever 48 is returned, the discharge valve 42 is closed by the spring force of the spring 43, the passage 37 is closed, and the discharge of water from the nozzle 46 is stopped. That is, the user can arbitrarily stop the discharge of the fire-extinguishing liquid (water) W depending on the situation. In addition, by operating the lever 48 as necessary, it is possible to discharge by an appropriate flow rate (water amount). Therefore, it is possible to prevent the fire extinguishing liquid, i.e. water, from being released more than necessary. Further, by using water as the fire extinguishing liquid W, post-treatment after fire extinguishing becomes easy.

The user can know the current amount (water amount) of the fire extinguishing liquid W in the container 21 from the indicated value of the pressure gauge 47. Therefore, when the amount of the fire extinguishing liquid W (water amount) in the container 21 decreases or becomes empty due to use, water is injected (filled) into the container 21 from the injection valve 41 as described above. Thereby, the water as a fire extinguishing liquid can be replenished easily and reuse is easy.
By using a bladder (accumulator) 25 as a means for pressurizing the fire extinguishing liquid W, it is possible to alleviate pressure fluctuations, simplify the configuration of the pressure control means, and maintain reusability. Further, when the pressure of the compressed gas sealed in the bladder 25 decreases, the compressed gas can be easily set by supplying the compressed gas from the air supply valve 26.

  In addition, by using water as the fire extinguishing liquid W, powder does not adhere between the valve contact surface of the injection valve 41 and the discharge valve 42 and the valve seat as in the case of using a digestive agent such as powder. Sealability is ensured. Therefore, it can be easily filled with water and used again without maintenance. Thereby, it is possible to use the simple fire extinguisher 1 repeatedly. Also, water is preferable in that it is harmless to the human body and most articles, and is particularly easy to perform post-treatment after use indoors. Moreover, filling is easy.

In the above-described embodiment, a case has been described where a bladder (accumulator) 25 is a breathable bladder having a vertically long shape that is substantially the same as that of the container 21. However, the present invention is not limited to this and has been generally used. A circular (spherical) or elongated bag-like bladder may be used.
In addition, nozzles having various injection patterns can be used. For example, by using a wide-angle full cone spray nozzle, it can be used not only for initial fire extinguishing, but also for ensuring low heat during condemnation in a structure having a small number of escape openings. Moreover, the simple fire extinguisher 1 can be easily used for other purposes, for example, when removing dirt from a private car, because the fire extinguisher (water) W is easily filled.

  In the above embodiment, the case where tap water is used as the fire extinguishing liquid is described. However, the present invention is not limited to tap water and the like, and is harmless or mildly affected on skin, clothing, indoor items, etc. It is also possible to use a fire extinguisher that has been subjected to corrosion treatment, for example, which can be handled by

DESCRIPTION OF SYMBOLS 1 Simple fire extinguisher 2 Main body container 3 Hand spray gun 4 Hose 5, 6 Connection metal fitting 21 Container 21a Upper surface 21b Bottom surface 21c Hole 21d Opening 21e Annular groove 22 Stand 23 Connection metal fitting 24 Handle 25, 25 ', 25 "Bladder (accumulator)
25a Opening 25b Flange 25c Breats 26 Air Supply Valve 27 Air Supply Valve Body 28 Air Valve Cavity 31 Main Body 32 Grip 32a Bracket 33 Barrel 34, 35 Hole 36, 37, 39 Passage 38 Hole 40 Screw Hole 41 Injection Valve 41a Valve Shaft 41b Groove 42 Release valve 42a Valve shaft 43 Spring 44 Valve holder 44a Shaft hole 45 Throttle valve 46 Nozzle 47 Pressure gauge 48 Lever (trigger)
48a Pressing part 49 Stopper 51, 53 Pipe 52 Holder 52a Cylindrical part 52b Flange 52c Spoke (radiation)
54 passage 55 O-ring 56 space 61 O-ring 63, 64 pin 65 snap pin 65a, 65b pin 65c central portion 65d root portion W fire extinguishing liquid (water)

Claims (1)

A body container;
An accumulator of a breathable bladder in which the compressed gas is housed and filled in the main body container, and the inner peripheral surface is provided with a plurality of breaths along the longitudinal direction at equal intervals in the circumferential direction ;
An injection valve connected to the body container;
A fire extinguishing liquid that is injected and pressurized into the main body container while compressing the accumulator from the injection valve;
A discharge valve connected to the main body container, closed by the pressure of the pressurized fire extinguishing liquid, and releasing the fire extinguishing liquid when opened;
A lever for opening the discharge valve;
A nozzle connected to the outlet side of the discharge valve for discharging the fire-extinguishing liquid ;
A throttle valve that is provided in a passage between the discharge valve and the nozzle, adjusts the passage area according to the pressure of the fire extinguishing liquid, and suppresses a decrease in the flow rate of the fire extinguishing liquid discharged from the nozzle;
A simple fire extinguisher characterized by comprising

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