JP7233273B2 - cap - Google Patents

Description

TECHNICAL FIELD The present invention relates to caps, and more particularly to dust-proof caps used in foam generators.

Conventionally, for example, a nozzle for water discharge typified by a water spray head for fire extinguishing has a possibility of inhibiting water discharge if dust such as dust or grease accumulates on the water discharge port. Some are equipped with a dustproof cap. The dust-proof cap is blown off by the force of the fire-fighting water discharged from the water discharge port, and is detached from the water discharge port (see Patent Document 1, for example).

On the other hand, for example, there are foam generators represented by foam fire extinguishing equipment that extinguishes fire by discharging and depositing foam in a fire extinguishing compartment. Such a foam generator is equipped with a foaming network, and by injecting a chemical that is a raw material for foaming toward the foaming network, the chemical is foamed and released as foam (for example, patent See Reference 2).

Japanese Unexamined Patent Application Publication No. 2015-36000 JP 2018-175596 A

If dust such as dust and oil accumulates in the foaming mesh of the foam generator and clogs the mesh, the foaming of the chemical agent and the release of the foam will be hindered. ing. At first glance, it seems that the solution can be solved by attaching a cap similar to the water spray head to the foam net, but the force of the foam is much smaller than that of the fire-fighting water, so the foam blows off the cap. This is considered to be difficult, and attaching a dust-proof cap to the foam mesh to prevent dust such as dust and grease from accumulating has not been practiced.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a dust-proof cap applicable to a foam generator.

The present invention provides a dust-proof cap attachable to a foam generator, comprising a cap body formed of a sheet, the cap body being a covering provided so as to cover at least a foam net of the foam generator. a fixed portion fixedly provided to the foam generator via a fixing means; and a breakable portion provided to be broken by release of foam from the foam generator, wherein the fixed portion is a cap which also serves as the breaking portion and is provided so as to be broken by the fixing means when the foam is discharged from the foam generator.

In addition, according to the present invention, the cap main body may be formed into a cylindrical shape with a bottom and may further have a breaking guide portion , and the breaking guide portion may be provided on both sides of the fixing portion. It is possible to guide breakage of the fixed portion. Also, in the present invention, the breaking portion can be a weakened portion.

In the present invention, since the cap has the breaking portion, it is possible to remove the cap from the foam generator by the force and weight of the foam discharged from the foam generator, and the cap is always removed from the foam generator. To provide a dust-proof cap applicable to a foam generator since the foam net of the foam generator is covered with a part, so that it is possible to prevent dust such as dust and grease from accumulating on the foam net. It is possible.

1 is a perspective view of an embodiment of the invention; FIG. Fig. 2 shows an embodiment of the present invention with the cap attached to the foamer; FIG. 4 is a view showing an embodiment of the present invention, showing a state in which the cap is detached from the foamer; FIG.

An embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. The cap 1 is a dust-proof cap for the foam generator 2 and is attached to the foam generator 2 . In this embodiment, the foam generator 2 is provided at the end of a foam fire extinguishing equipment that releases foam B to suffocate and extinguish a fire, and the foam fire extinguishing equipment is, for example, a high-expansion foam fire extinguishing equipment. . In this embodiment, the foam generator 2 is fixed to a duct or installed above a machine tool, and is vertically placed such that a foam discharge port provided with a foam net 22 (to be described later) opens substantially vertically downward. However, it may be installed horizontally with the foam outlet opening in a substantially horizontal direction.

The foam generator 2 includes a foamer 20 for foaming a foam fire extinguishing agent (hereinafter also referred to as agent). The foamer 20 includes a housing 21, a foaming net 22 provided on the tip side of the housing 21 for foaming the chemical agent, and a nozzle that supplies the chemical agent into the housing 21 and radiates it toward the foaming net 22. a portion 23;

In this embodiment, the foaming net 22 of the foam generator 2 has a substantially flat plate shape, but the shape of the foaming net 22 can be appropriately selected, and can be substantially triangular prism-like or other shape. A pin 24, which is an example of fixing means for fixing the cap 1 to the foaming device 20, extends outward from the lower side portion of the housing 21. As shown in FIG. It should be noted that the fixing means other than the pin 24 can be appropriately selected as required.

The cap 1 has a cap body 10 which is attachable to the foamer 20 of the foam generator 2 . The cap body 10 is formed from a sheet so as to match the shape of the foaming device 20, and has a covering portion 11, a fixing portion 12 and a breaking portion. The breaking portion is provided so as to be broken by the weight of the foam B and the force associated with the release of the foam B from the foaming device 20 of the foam generator 2. When the breaking portion is broken, the cap 1 is detached from the foamer 20 so as not to interfere with the discharge of the foam B from the foam generator 2. - 特許庁The thickness of the sheet is such that it does not interfere with fixing the cap 1 to the foaming device 20 by the fixing means, and the breaking portion has a thickness that can be broken by releasing the foam B. It can be selected as appropriate within the range.

In this embodiment, the cap main body 10 is formed in a bottomed tubular shape, for example, a bottomed square tubular shape (box shape). A fixing portion 12 that also serves as a fixing portion 12 is provided, and a reinforcing portion 13 is provided below the side portion. The material of the sheet forming the cap main body 10 can be appropriately selected, and for example, metal such as aluminum, resin such as vinyl, paper such as Japanese paper, and the like can be selected. In particular, by forming the cap main body 10 from a metal sheet, it is possible to ensure heat resistance, and it is possible to use it in a duct or the like through which high-temperature gas flows.

Various methods can be selected as appropriate for the method of molding the cap body 10. For example, a sheet of aluminum foil or the like is cut into a substantially box-shaped development (substantially cross-shaped), and then folded. It may be molded, or may be molded as a sheet of that shape from the beginning.

The covering portion 11 is provided so as to cover the front side of the foaming net 22 in order to prevent dust such as dust and grease from accumulating on the foaming net 22 when the cap 1 is attached to the foam generator 2. , and the shape thereof can be appropriately selected according to the shape of the foam generator 2 .

The fixing part 12 is provided so that the cap 1 can be fixed to the foaming device 20 via fixing means. In this embodiment, the fixed portion 12 is provided so that the pin 24 can pass therethrough, and fracture guide portions 14 are provided along the fracture direction A of the fixed portion 12 on both sides thereof. That is, in this embodiment, when the cap 1 is attached to the foam generator 2 (foamer 20), the fixing portion 12 is penetrated by the pin 24 from the inner side of the cap 1. As shown in FIG.

Although the number of fixing portions 12 can be selected as appropriate, it is preferable to provide a plurality of fixing portions 12 on each side portion of the cap body 10 . By doing so, when the cap 1 is detached from the foaming device 20, it is possible to further reduce the possibility that the cap 1 will be tilted and the breakage of the fixing portion 12 will be hindered.

The breaking guide part 14 guides the breakage direction of the fixing part 12 when the fixing means (the pin 24 in this embodiment) is broken, so that the cap 1 can be separated from the foaming device 20 more reliably. It is set up like this. The breaking guide portion 14 is provided more firmly than the fixed portion 12 by, for example, providing the portion thicker than the fixed portion 12, and when the foam B is discharged from the foaming device 20, at least It is provided with such a strength as not to break depending on the fixing means. In the present embodiment, aluminum tape is applied to both sides of the fixed portion 12 to thicken and reinforce the portion, thereby forming the fracture guide portion 14 .

The reinforcing portion 13 is provided to increase the strength of the cap body 5, and in this embodiment, is formed by winding an aluminum tape to thicken and reinforce the portion.

As a result, the fixing portion 12 formed of the sheet is broken by the pins 24 when the foam B is released from the foaming device 20 and the force and weight of the foam B are applied to the covering portion 11. The break allows the cap 1 to be separated from the foamer 20 .

Therefore, the cap 1 of the present embodiment covers the front surface of the foam net 22 to prevent dust such as dust and oil from accumulating on the foam net 22 . is released, the breaking portion (fixed portion 12) is broken by the weight of the foam B and the force associated with the release, and the cap 1 is removed from the foaming device 20. Therefore, bubbles are generated. It can be used as a dust-proof cap for the machine (foam generator 2).

Although the present invention has been described based on the above embodiments, the present invention is not limited to the above embodiments, and can be modified as appropriate without changing the gist of the invention.

(1) For example, in the above embodiment, the breaking portion is provided so as to serve as the fixing portion 12 , but the breaking portion can be provided separately from the fixing portion 12 . For example, it is also possible to provide a weakened portion, such as a perforation or a thin portion, to the extent that the side portion of the cap 1 or the covering portion 11 is broken by the weight of the foam B or the force associated with the discharge, and use it as the breaking portion. is.

(2) In the above embodiment, the pin 24 is provided on the foaming device 20 side. It is also possible to fix the cap 1 to the foamer 20 by penetrating the .

(3) In the above embodiment, the breaking guide portion 14 is provided by making it thicker than the fixing portion 12. It is also possible to use the thin portion as the fixing portion 12 and use the other portion of the side portion as the breaking guide portion 14 .

(4) It is also possible to form weakened portions (not shown) such as perforations or thin-walled portions in the fixed portion 12 so that the fixed portion 12 can be easily broken by the pins 24 . It is also possible to form a hole in advance for the pin 24 to pass through.

(5) In the above embodiment, the cap 1 of the foam generator 2 provided at the end of the high-expansion foam fire-extinguishing equipment has been described as an example, but the present invention can be applied to various fire-extinguishing foams regardless of the foaming ratio of the foam fire-extinguishing agent. It can be applied to foam generators located at the end of the installation, and also to smaller foam generators, such as foam heads (not shown), located at the end of lower expansion foam fire extinguishing installations. Applicable.

REFERENCE SIGNS LIST 1 cap 10 cap main body 11 covering portion 12 fixing portion 13 reinforcing portion 14 breaking guide portion 2 foam generator 20 foaming device 21 housing 22 foaming net 23 nozzle portion 24 pin A breaking direction B foam

Claims (3)

A dust-proof cap attachable to a foam generator,
comprising a cap body formed by a sheet;
The cap main body includes a covering portion provided so as to cover at least a foaming net of the foam generator, a fixing portion provided so as to be fixable to the foam generator via fixing means, and a a breakable portion that can be broken by releasing bubbles ;
The cap is characterized in that the fixing portion also serves as the breaking portion and is provided so as to be broken by the fixing means when the foam is discharged from the foam generator. The cap body is formed in a cylindrical shape with a bottom and further has a breaking guide part ,
2. The cap according to claim 1, wherein the breakage guide portions are provided on both sides of the fixing portion and guide breakage of the fixing portion. 3. The cap according to claim 1, wherein the breaking portion is a weakened portion.

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