JP2019024761A - Foam maker set - Google Patents

Abstract

To provide a foam maker set capable of selecting a proper foam maker according to a situation of a fire site, and capable of being stored in a compact state.SOLUTION: A foam maker set of the invention is configured so that, a second foam maker 200 is stored in a first foam maker 100. The first foam maker 100 has a channel cylinder 101, injection nozzles 105a-h provided on one end side of the channel cylinder 101, and a foam net-like body 107 provided to close an opening on the other end side. The second foam maker 200 has a channel cylinder 201, an injection nozzle 205 provided on one end side of the channel cylinder 101, and a foam net-like body 207 for closing the opening on the other end side. The foam net-like body 107 of the first foam maker 100 can be opened and closed freely, and the second foam maker 200 can be stored therein and taken out therefrom.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a foamer set that can be compactly accommodated and can be suitably used as a foamer mounted on a fire truck or the like while being able to select an appropriate foamer according to the situation of the fire site. .

  Bubble extinguishing equipment is used for extinguishing fires such as oil fires. Foam fire extinguishing equipment is a device that jets foam solution diluted with a certain ratio of foam fire extinguishing agent and foams it to release foam. . For example, the expansion ratio is about 20 to 100 times for a medium expansion device, and about 200 to 500 times (or more) for a high expansion device. Middle foamers are mainly used for oil spill fires and vehicle fires, while high foamers are used for extinguishing suffocation against dangerous goods fires in warehouses and basements. When extinguishing a fire, appropriate foam extinguishing equipment must be selected according to the fire situation. The nature of the foam affects the fire extinguishing performance. If the foam quality is not appropriate, it takes time to extinguish the fire and it is difficult to extinguish the fire.

  The medium foamer and the high foamer are both equipped with an injection nozzle, foaming mesh, hose fittings and foaming device body. When foam aqueous solution is jetted from the jet nozzle, the foaming mesh is taken in while taking in ambient air. It is structured such that it collides with the body, foams and is released as foam from the foamer body. In the design of the medium foamer and the high foamer, the properties such as the properties (foaming ratio and reduction time) and range of the foam to be injected, and the bubble aggregation at the time of injection are important. These characteristics vary depending on the positional relationship between the injection nozzle and the foaming mesh, the shape of the foaming mesh, the shape of the foamer, the injection pressure / flow rate, etc., so a single foamer that combines a medium foamer and a high foamer. Foaming is difficult and each separate foamer needs to be transported to the fire site.

  On the other hand, in recent years, dangerous goods fires have become diversified and complicated, and as a result, the materials and equipment mounted on fire engines have increased, and accordingly, the foamers have been required to be compact. For this reason, what was made compact by making the middle foamer and the high foamer into a foldable type or a telescopic type has been developed (Patent Documents 1 to 4).

  However, when the foaming device is foldable or expandable, it takes time to assemble, and depending on the assembly method, the positional relationship between the spray nozzle and the foaming mesh changes, and the foam properties, range, and bubble aggregation There was a risk of getting worse. In addition, since fire fighting equipment is used in harsh sites, robustness is required, but there is also a problem that the robustness is inferior.

JP 2010-000287 A JP 2007-190167 A JP 2009-233233 A JP 2009-240517 A

  The present invention has been made in view of the above-described conventional situation, and provides a foamer set that can select a suitable foamer according to the situation of a fire site and can be accommodated in a compact manner. It is an issue.

  The foamer set of the present invention includes a flow channel cylinder having openings at both ends, an injection nozzle provided on one end side of the flow channel cylinder, and a foaming mesh for closing the opening on the other end side of the flow path cylinder. A first foamer comprising: a channel cylinder accommodated in a channel cylinder of the first foamer and having openings at both ends; an injection nozzle provided on one end side of the channel cylinder; And at least one second foaming device provided with a foaming mesh that closes the opening at the other end of the flow path cylinder, and the foaming mesh of the first foaming device is openable and closable. The second foaming device can be taken in and out when the foaming mesh is open.

  In the foamer set of the present invention, the second foamer is accommodated in the flow path cylinder of the first foamer. The foaming mesh of the first foamer is openable and closable, and the second foamer can be taken in and out when the foaming mesh is open. For this reason, the second foamer can be transported to the fire site in a state where the second foamer is accommodated in the flow path cylinder of the first foamer. Can be small. Further, after the arrival at the fire site, the foaming mesh is opened, the second foamer accommodated in the flow path cylinder of the first foamer is taken out, and the first foamer is injected. If a hose is connected to the nozzle to feed the foam aqueous solution, the foam aqueous solution is jetted from the tip of the spray nozzle, collides with the foaming mesh while taking in the surrounding air, and adheres to the mesh portion of the foaming mesh. A film is formed. Furthermore, the liquid film is blown by air and can be discharged as bubbles from the channel tube. In the present specification, the foaming net means a liquid film that adheres when an aqueous foam solution is jetted from a jet nozzle, and that can be foamed by air hitting the liquid film. Examples thereof include a metal net, a deformable resin net, and a punching metal having a large number of holes in a metal plate.

On the other hand, the second foamer taken out also has a flow channel cylinder, an injection nozzle provided on one end side of the flow channel cylinder, and a foaming mesh member that closes the opening on the other end side of the flow path cylinder. Since it is provided, bubbles can be released in the same manner.
Here, by setting the specifications of the first foamer and the second foamer to different specifications (for example, different foaming ratios, injection flow rates, etc.), it is possible to select an appropriate foamer according to the fire site.

  Therefore, according to the foamer set of the present invention, a plurality of foamers having different specifications can be transported in a compactly housed state to the fire site, and an appropriate foamer can be quickly adapted to the situation at the fire site. You can choose

In the foamer set of the present invention, it is preferable that the foaming ratio of the first foamer is larger than the foaming ratio of the second foamer. In general, the larger the foaming ratio of the foaming apparatus, the larger the foaming apparatus having a large flow path cylinder. Therefore, a foaming apparatus having a small foaming ratio can be accommodated in the large flow path cylinder in a compact manner.
However, the smaller the size of the foamer, not only the air volume decreases and the foaming ratio decreases, but also the smaller the spray angle of the spray nozzle and the smaller the area of the foaming mesh, the more The yield of the aqueous foam solution that flows without foaming tends to increase.
Therefore, in order to radiate bubbles suitable for fire extinguishing, change the spray angle of the spray nozzle, the shape of the foaming mesh, and the position of the spray nozzle and foaming mesh, and check the properties of the foam each time. However, it is necessary to obtain a position where a foam property suitable for fire extinguishing can be obtained.
In order to use the first foaming device and the second foaming device, the second foaming device is used in the flow of the first foaming device while setting parameters such as the foam property, range, and foam mass to appropriate values. Must be housed in the tube. As a result of intensive research on the shape of the foaming mesh, the spray angle of the spray nozzle, the shape of the foamer, and the like, the inventors have made the first foamer to be 300 in height in order to produce foam properties suitable for fire extinguishing. If the second foamer has a cuboid shape with a diameter of 200 to 500 mm and a depth of 600 to 1000 mm, the first foamer is highly foamed. It has been found that a suitable parameter value can be obtained for a flexible foaming device, and that the second foaming device can have a suitable parameter value for a medium foaming foaming device, and can have a compact shape.

Moreover, in the foamer set of this invention, it is preferable that the connection jig which can attach or detach a 2nd foamer is being fixed in the flow-path cylinder of a 1st foamer. In this case, the second foamer can be firmly fixed in the flow path cylinder of the first foamer, and the second foamer can be easily taken out.
In this case, if the connecting jig is attached to the pipe of the injection nozzle of the first foamer, it is preferable because further space saving is possible.

It is sectional drawing seen from the front side of the foamer set of Example 1. FIG. It is a side view of the foamer set of Example 1. It is a partially broken front view of the foamer set of Example 1. It is a side view in the state where the 2nd foaming device in the foaming device set of Example 1 was taken out. It is a front view of a 2nd foamer. It is a side view of a 2nd foamer. It is the partially broken front view which showed the internal structure of the front end side and rear end side of a 2nd foamer. It is a fragmentary sectional view of the foamer set which shows the 2nd modification of Example 1. FIG.

Embodiments embodying the present invention will be described below.
Example 1
The foamer set of Example 1 is a foamer set for mounting on a vehicle such as a fire engine, and as shown in FIGS. 1 and 2, inside the foamer 100 having a substantially rectangular parallelepiped shape and a high expansion ratio, Two foamers 200 and 300 having a medium cylindrical expansion ratio are accommodated. The foaming device 100 having a high expansion ratio has a rectangular parallelepiped shape with a height of 400 mm, a width of 800 mm, and a depth of 1300 mm, and is designed so that a high-magnification bubble is injected within a specified pressure range. The height can be changed in the range of 300 to 600 mm, the width is 700 to 900 mm, and the depth is 1100 to 1600 mm. On the other hand, the foaming device 200 and the foaming device 300 with the medium expansion ratio have the same structure, and have a cylindrical shape with a diameter of 350 mm and a depth of 900 mm. Has been. The diameter can be changed within the range of 250 to 500 mm and the depth within the range of 600 to 1200 mm.

As to the configuration of the foaming device 100, as shown in FIGS. 3 and 4, the foaming device 100 has a nozzle mounting jig 102 (FIG. 4) made of stainless steel piping material on one end side of a bottomless rectangular tube-shaped channel tube 101. 2) extends vertically at the center position and is connected to the inner surface of the flow path tube 101, and a hose connection fitting 103 is attached to the center of the nozzle attachment jig 102 by screw connection. The hose is connected to the hose connection fitting 103 by inserting one end of a hose for inserting a foam aqueous solution (not shown) into the hose connection fitting 103. On the opposite side of the hose connection fitting 103 from the hose connection side, as shown in FIG. 4, a branch pipe 104 is branched and extended to the left and right. In addition, spray nozzles 105a, b, c, d, e, f, g, and h for spraying the foam aqueous solution are provided at eight positions at regular intervals. A pressure gauge 106 is installed upright on the hose connection fitting 103.

  Further, as shown in FIG. 3, a foaming net 107 made of a stainless steel wire and bent in a folding screen is installed at the other end of the channel cylinder 101 so as to close the channel. A punching metal plate may be used instead of the stainless steel wire mesh. The foam net 107 is attached to a square frame 108 fitted to the tip of the flow path cylinder 101, and the square frame 108 is detachably attached by a lock mechanism 109. The lock mechanism 109 has a structure in which the square frame 108 is connected by a hinge and fixed to the flow path cylinder 101 by a spring lock. A handle 110 is attached to the side surface of the square frame 108. It should be noted that other lock mechanisms may be used in place of the lock mechanism 109 as long as the foamed net 107 can be repeatedly attached and detached.

  Further, four wheels 111 for movement are attached to the lower surface side of the flow path cylinder 101, and metal fittings 112 for suspension are attached to the upper surface side of the flow path cylinder 101 at four positions. .

-About the structure of the foaming device 200 On the other hand, as shown in FIG. Three nozzle mounting jigs 202a, b, and c are extended and welded from the locations in the axial direction, and a hose connection fitting 203 is provided at the other end of the nozzle mounting jigs 202a, b, and c. It is attached by screw connection. The hose can be connected to the hose connection fitting 203 by inserting one end of a hose for inserting a foam aqueous solution (not shown) into the hose connection fitting 203. Moreover, as shown in FIG. 7, the injection nozzle 205 for spraying foam aqueous solution is provided in the front-end | tip of the hose connection metal fitting 203 on the opposite side to the hose connection side. Furthermore, a pressure gauge 206 is attached to the hose connection fitting 203. Further, a window 206 a for visually recognizing the pressure gauge 206 is provided at a position facing the pressure gauge 206 of the flow path cylinder 201.
On the other hand, a conical foaming mesh 207 made of stainless steel mesh is installed on the other end side of the channel cylinder 201 so as to close the channel. In addition, handles 210 a and b for the firefighter to hold the foamer 200 in his / her hand are attached to the two side surfaces of the channel cylinder 201. The handles 210a, 210b have a horizontal portion so that the foamer 200 can be placed stably without rolling when it is placed sideways.

The distance between the spray nozzle 205 of the foaming device 200 and the foaming device 300 of medium foaming ratio and the foaming mesh 207 is 500 mm (however, it can be any value of 400 to 600 mm). The angle is adjusted to radiate in a full cone shape at 30 ° (which may be any value of 20 to 40 °) at a radiation pressure of 0.5 MPa. Further, the foaming mesh 207 is a conical metal mesh, and the apex angle of the cone is 60 ° (however, it can be any value between 45 and 75 °). By combining these condition ranges, it is possible to emit bubbles with a medium expansion ratio suitable for fire extinguishing.

  In the foaming device set of Example 1 configured as described above, as shown in FIG. 1, the foaming device 200 is mounted on a fire truck in a state where a foaming device 200 having a medium foaming ratio is accommodated inside a foaming device 100 having a high foaming ratio. The For this reason, it is possible to reduce the space for loading compared to the case where the high expansion ratio foamer and the medium expansion ratio foamer are individually stacked. When arriving at the fire site, the firefighter raises the locking mechanism 109 of the foaming device 100 to release it, grasps the handle 110 (see FIG. 3), and removes the square frame 108 together with the foaming mesh 107. And the foaming device 200 of the medium expansion ratio accommodated in the inside is taken out. Further, the foamer 100 is lowered. At this time, since the wheel 111 is attached to the foamer 100, the firefighter can easily move the foamer 100. -

  Thus, when the foamer 100 and the foamer 200 are lowered, the foamer 100 with a high foaming ratio is used according to the fire situation at the fire site, or the fire extinguishing activity is performed with the foamer 200 with a medium foaming ratio, or both. Quickly determine whether to use the fire extinguishing. The foaming device 100 having a high expansion ratio can be suitably used when extinguishing a suffocation against a dangerous material fire in a warehouse or a basement space. Moreover, the foaming device 200 having a medium expansion ratio can be suitably used for a spilled oil fire or a vehicle fire.

  When the foaming device 100 having a high expansion ratio is used, as shown in FIG. 3, the rectangular frame 108 to which the foaming mesh 107 is attached is fitted again to the tip of the flow path cylinder 101, and then the lock mechanism 109 is used. Then, the square frame 108 is fixed and the foaming mesh 107 is attached. And the hose which is not shown in figure is inserted and connected to the hose connection metal fitting 103, and foam aqueous solution is sent from a fire engine. The foam aqueous solution thus supplied from the hose passes through the branch pipe 104 and is sprayed in a mist state from the spray nozzles 105a, b, c, d, e, f, g, h, and adheres to the foaming net 107. Furthermore, bubbles are generated and bubbles with a high expansion ratio are released from the foaming mesh 107.

  On the other hand, when using the foaming device 200 having a medium expansion ratio, a hose is connected to the hose connection fitting 203 shown in FIG. The aqueous foam solution thus supplied from the hose is sprayed in the form of a mist from the spray nozzle 205, adheres to the foaming mesh 207, and further becomes foamed to release bubbles with a medium expansion ratio from the foaming mesh 207. Is done. The foaming device 200 is small and lightweight, and can hold the handles 210a and 210b to discharge bubbles toward the fire. Moreover, since the foam | bubble released is medium foaming magnification, since the range is long, it can perform a fire extinguishing activity safely from a distance with respect to a spilled oil fire and a vehicle fire. Furthermore, by checking the pressure with the pressure gauge 206, it is possible to determine whether or not the liquid feeding pressure is an appropriate pressure, and to control the output of a liquid feeding pump (not shown).

  In Example 1, the foaming device 200 and the foaming device 300 having a medium foaming ratio have the same structure. However, it is also possible to use two different foaming machines with different characteristics such as foaming ratio. it can. If this is the case, it is possible to select a more appropriate foamer according to the situation at the fire site. Moreover, you may accommodate | store fire extinguishing apparatuses (fire extinguishing hose, a fire extinguishing nozzle, etc.) other than a foamer in the inside of the foamer 100 of high foaming ratio.

-1st modification of Example 1 In the foamer set of the said Example 1, the raw material of the foaming net-like body 107 of the 1st foaming device 100 and the foaming net-like body 207 of the 2nd foaming device 200 is used as the stainless steel metal mesh. However, instead of this, a resin net may be used. In this case, the removed foaming net can be folded, and further space saving is possible and handling is further facilitated.

Second Modification of Example 1 In the foamer set of Example 1, the foamer 200 was simply placed in the flow channel cylinder 101 of the foamer 100 with the handles 210a and b facing downward. Instead of this, as shown in FIG. 8, a hose end fitting 211 may be attached to the branch pipe 104 at a position aligned with the hose connection fitting 203 of the foamer 200. In this case, the foaming device 200 is firmly fixed by inserting the hose connection fitting 203 into the hose tip fitting 211, and the detachment from the hose tip fitting 211 is easy.

  The present invention is not limited to the description of the embodiments and examples of the invention described above. Various modifications are also included in the present invention as long as those skilled in the art can easily conceive without departing from the scope of the claims.

DESCRIPTION OF SYMBOLS 100 ... 1st foamer 200 ... 2nd foamer 101, 201 ... Channel pipe | tube 105a, b, c, d, e, f, g, h, 205 ... Injection nozzle 107,207 ... Foam net 211 ... Hose end fitting (connection jig)

Claims (4)

1st foamer provided with the flow path cylinder which has an opening in both ends, the injection nozzle provided in the one end side of this flow path cylinder, and the foaming net body which block | closes the opening of the other end side of this flow path cylinder When,
A flow channel cylinder housed in the flow channel cylinder of the first foamer and having openings at both ends; an injection nozzle provided on one end side of the flow path cylinder; and an opening on the other end side of the flow channel cylinder And at least one second foaming device comprising a foaming mesh for closing
A foamer set, wherein the foaming mesh of the first foamer is openable and closable, and the second foamer can be taken in and out when the foaming mesh is open.   2. The foamer set according to claim 1, wherein a foaming ratio of the first foamer is larger than a foaming ratio of the second foamer.   The foamer set according to claim 1 or 2, wherein a connection jig capable of attaching and detaching the second foamer is installed in a flow path cylinder of the first foamer. The foaming device set according to any one of claims 1 to 3, wherein the connection jig is attached to a pipe of an injection nozzle of the first foaming device.

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