Fire extinguisher

Abstract

To provide a fire extinguisher having a function to recover stipulated viscosity in a high viscosity fire extinguishing agent that is frozen once.SOLUTION: A fire extinguisher 1 for extinguishing fire by discharging a high viscosity fire extinguishing agent from a storage tank 3 for storing a high viscosity fire extinguishing agent is equipped with an agitation device 5 provided in the storage tank 3 for agitating the high viscosity fire extinguishing agent. The agitating device 5 includes agitation blades 7 disposed in the storage tank 3 and a rotation shaft 9, one side of which is connected to the agitation blades 7 and the other side of which is disposed outside the storage tank 3 for transmitting an agitation movement to the agitation blades 7. By imparting driving force to the other side of the rotation shaft 9, the agitation blades 7 are rotated as an agitation movement so that the high viscosity fire extinguishing agent in the storage tank 3 can be agitated.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fire extinguishing device that extinguishes a fire by releasing a highly viscous fire extinguishing agent from a storage tank in which the highly viscous fire extinguishing agent is stored. [Background technology]

[0002] High-viscosity fire extinguishing agents have a high viscosity, and because they adhere to the surface of the object and create a layer of water, they are highly effective in preventing the spread of fire. A fire extinguishing device using such a high-viscosity fire extinguishing agent is proposed in Patent Document 1, for example.

[0003] In Patent Document 1, in order to solve the problem that a high viscosity fire extinguishing agent has a high viscosity when left at rest, and therefore a larger amount remains in the container after release than other agents, the vibrations of the pump that pumps the high viscosity fire extinguishing agent are transmitted directly or indirectly to the storage container, thereby reducing the viscosity of the high viscosity fire extinguishing agent in the storage container. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2020-151286 Summary of the Invention [Problem to be solved by the invention]

[0005] In Patent Document 1, attention is focused on the fact that the viscosity is high when left standing, and the viscosity is reduced to improve the release efficiency. On the other hand, the present invention is completely different from the above-mentioned viewpoint, and this point will be explained below.

[0006] High-viscosity fire extinguishing agents are made by mixing inorganic materials with water. If left outdoors in winter, they will freeze. Once frozen, even if they are thawed, their viscosity will fall below the specified level. However, if thawed high-viscosity fire extinguishing agents are stirred, they will regain their specified viscosity. If the agent is released after being frozen and thawed and its viscosity drops below the specified level, it will not be able to perform its intended function of adhering to the surface of the target object and preventing the spread of fire.

[0007] The present invention has been made to solve such problems, and aims to provide a fire extinguishing device that has the function of restoring a frozen and thawed high-viscosity fire extinguishing agent to its specified viscosity. [Means for solving the problem]

[0008] (1) The fire extinguishing device of the present invention extinguishes a fire by releasing a highly viscous fire extinguishing agent from a storage tank in which the highly viscous fire extinguishing agent is stored, and is characterized by having an agitation device provided in the storage tank for agitating the highly viscous fire extinguishing agent.

[0009] (2) In addition, in the device described in (1) above, the stirring device comprises a stirring member disposed within the storage tank, and a stirring action transmission member, one end of which is connected to the stirring member and the other end of which is disposed outside the storage tank, for transmitting a stirring action to the stirring member; By applying a driving force to the other side of the stirring action transmission member, the stirring member is caused to perform a stirring operation, thereby making it possible to stir the high-viscosity fire extinguishing agent in the storage tank.

[0010] (3) Furthermore, in the device described in (2) above, it is characterized in that it is provided with a driving force imparting means for imparting the driving force to the stirring action transmission member in conjunction with the moving action of moving the storage tank.

[0011] (4) Furthermore, in the above (3), it is characterized in that it has a wheel for moving the storage tank, and the driving force imparting means imparts a driving force to the stirring action transmission member in conjunction with the rotation of the wheel for moving.

[0012] (5) Furthermore, in the above (2), the stirring action transmission member has a connecting portion on the other side that can be connected to the rotating portion of the electric tool, and the connecting portion is connected to the rotating portion of the electric tool, and the rotating portion rotates, thereby rotating the stirring member. [Effects of the Invention]

[0013] According to the present invention, even after a high-viscosity fire extinguishing agent has frozen, it can be restored to its specified viscosity, allowing the high-viscosity fire extinguishing agent to exhibit its inherent functions. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is an explanatory diagram of a main part of a fire extinguisher according to a first embodiment. [Figure 2] FIG. 4 is an explanatory diagram of a main part of a fire extinguisher according to another aspect of the first embodiment. [Figure 3] FIG. 10 is an explanatory diagram of a main part of a fire extinguisher according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] [Embodiment 1] As shown in FIG. 1, the fire extinguishing device 1 according to the first embodiment extinguishes a fire by releasing a highly viscous fire extinguishing agent from a storage tank 3 storing the highly viscous fire extinguishing agent, and is provided with an agitation device 5 that is provided in the storage tank 3 and agitates the highly viscous fire extinguishing agent.

[0016] <High viscosity fire extinguishing agent> As the high-viscosity fire extinguishing agent, a high-viscosity liquid having thixotropy (the property of changing from a gel to a sol when stirred or shaken) is used. For example, such a high-viscosity liquid can be prepared by adding additives containing minerals containing colloidal hydrous silicate that impart thixotropy to water or compounds made of such silicate.

[0017] <Storage tank> The storage tank 3 is basically used for large fire extinguishers, and when firefighting activities are carried out, it is moved to the fire scene by some kind of transportation means. As an example of the transportation means, as shown in Figure 2, transportation wheels 4 attached to the storage tank 3 by attachment means (not shown) can be used, but other transportation means, including one that can be carried by hand, can also be used. Although not shown, the storage tank 3 is equipped with a hose, a nozzle, and a pressurizing gas cylinder for discharging the stored high viscosity fire extinguishing agent.

[0018] As shown in FIG. 1, the stirring device 5 includes a stirring blade 7 as a stirring member arranged inside the storage tank 3, and a rotating shaft 9 as a stirring action transmission member, one end of which is connected to the stirring member and the other end of which is arranged outside the storage tank 3 and transmits the stirring action to the stirring member. By applying a driving force to the other side of the rotary shaft 9, the stirring blade 7 can be rotated to stir the highly viscous fire extinguishing agent in the storage tank 3.

[0019] The agitator blade 7 may be provided at the bottom of the storage tank 3 as shown in FIG. 1, or may be provided on the side of the storage tank 3 as shown in FIG. 2; the arrangement of the agitator blade 7 is not particularly limited. Note: For stirring to recover viscosity, it is best to replenish the stirring blades at position 7.

[0020] In the fire extinguisher 1 configured as described above, a rotational force, which is a stirring operation, is applied to the rotating shaft 9 from outside the storage tank 3, thereby rotating the stirring blade 7 and stirring the highly viscous fire extinguishing agent. To provide the stirring action, a connection part that can be connected to the rotating part of a power tool is provided on the other side of the rotating shaft 9, and the rotating shaft 9 is rotated by connecting the connection part to the rotating part of the power tool. This allows the viscosity of the high-viscosity fire extinguishing agent, which has once been frozen and lost its viscosity, to be restored. Such stirring should be carried out immediately before starting firefighting activities.

[0021] The agitating member of the present invention is not limited to the agitating blade 7, but may be anything that can agitate the highly viscous liquid in the storage tank 3, and the shape thereof is not particularly limited. Furthermore, the stirring operation of the present invention is sufficient as long as it is an operation that can stir a highly viscous liquid, and in addition to rotation, it may also be an operation that causes the stirring member to oscillate or reciprocate.

[0022] [Embodiment 2] The fire extinguisher 1 of this embodiment is provided with a driving force applying means for applying a driving force to the agitation action transmitting member in conjunction with the movement action of moving the storage tank 3. A specific example of the driving force applying means will be described with reference to FIG.

[0023] In this embodiment, transportation wheels 4 are provided on both sides of the storage tank 3, and an axle 11 is provided to connect them. The axle 11 is rotatably attached to the storage tank 3 by an attachment means (not shown). In addition, a first gearbox 13 is provided in the center of the axle 11, and one end of a connecting shaft 15 is connected to the first gearbox 13. A second gearbox 17 is provided at the other end of the connecting shaft 15, and the rotating shaft 9 is connected to the second gearbox 17.

[0024] When the storage tank 3 is moved, the transport wheels 4 rotate, and the rotation of the axle 11 is transmitted to the rotating shaft 9 via the first gearbox 13, connecting shaft 15, and second gearbox 17, causing the stirring blade 7 to rotate.

[0025] According to this embodiment, when a fire occurs, the high viscosity fire extinguishing agent is stirred in conjunction with the movement of the storage tank 3 to the fire scene, so that fire extinguishing activities can be carried out immediately upon arrival at the fire scene.

[0026] In the above embodiment, the driving force imparting means is exemplified as being composed of the axle 11, the first gear box 13, the connecting shaft 15, and the second gear box 17, but the driving force imparting means of the present invention is not limited to this and may be anything that can impart driving force to the stirring action transmission member in conjunction with the rotation of the moving wheels. For example, the rotating shaft 9 and the axle 11 may be meshed with each other by a worm gear. In this case, a worm or a worm wheel may be provided on either the rotating shaft 9 or the axle 11. The rotating shaft 9 and the axle 11 may also be meshed with each other by a bevel gear. [Explanation of symbols]

[0027] 1 Fire extinguishing equipment 3. Storage tanks 4. Transport wheels 5. Stirring device 7 stirring blade 9 Rotating shaft 11 axles 13 First gearbox 15 Connecting shaft 17 Second gearbox

Claims

1. A fire extinguishing device that extinguishes a fire by releasing a high-viscosity fire extinguishing agent from a storage tank in which the high-viscosity fire extinguishing agent is stored, the fire extinguishing device comprising an agitation device provided in the storage tank for agitating the high-viscosity fire extinguishing agent.

2. The agitation device includes an agitation member disposed in the storage tank; an agitation action transmission member, one end of which is connected to the agitation member and the other end of which is disposed outside the storage tank, for transmitting agitation action to the agitation member; 2. The fire extinguisher according to claim 1, wherein the agitation member is caused to perform agitation by applying a driving force to the other side of the agitation action transmission member, thereby enabling the agitation of the high-viscosity fire extinguishing agent in the storage tank.

3. 3. The fire extinguisher according to claim 2, further comprising a driving force applying means for applying the driving force to the agitation action transmitting member in conjunction with a moving action of the storage tank.

4. a wheel for moving the storage tank; 4. The fire extinguisher according to claim 3, wherein the driving force applying means applies a driving force to the stirring action transmitting member in conjunction with the rotation of the moving wheels.

5. The fire extinguishing device described in claim 2, characterized in that the stirring action transmission member has a connection portion on the other side that can be connected to a rotating portion of an electric tool, and when the connection portion is connected to the rotating portion of the electric tool and the rotating portion rotates, the stirring member rotates.

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