JPH0450044Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a fire extinguishing foamer that foams and sprays foaming extinguishing liquid.

Prior Art In recent years, urban environments have become increasingly diverse, and the challenges faced by fire departments have become more complex and diverse. In particular, hazardous materials are handled in a wide variety of ways due to the remarkable progress of the petrochemical industry and the increasingly crowded urban environment, and there is a remarkable tendency for accidents to occur frequently, including fires at hazardous materials manufacturing factories and tanker overturning fires on major roads. It has occurred.

Fire extinguishing with foam coating is useful for oil and fat fires, and is divided into low foaming, medium foaming, and high foaming depending on the foaming ratio. In particular, foam extinguishing with a so-called medium foaming ratio of about 30 to 150 times is effective against grease fires, and various medium foaming devices have been proposed.

However, because the expansion ratio of foam and the range of extinguishing fluid are inversely proportional, firefighters must get close to the flames. Grease fires generate a uniquely high level of radiant heat, which increases the risk of injury to firefighters fighting the fire. This is the current situation. However, auxiliary water injection from the rear is inefficient and not sufficiently effective, and even when special fireproof clothing (heat-resistant clothing) is worn, the internal temperature rises rapidly due to radiant heat in front of the flames.

Purpose of the invention The purpose of the invention is to provide a fire extinguishing foam that blocks radiant heat from fire and enables safe firefighting.

Structure of the invention The fire extinguishing foamer of the invention includes a cylindrical body having a fire extinguishing fluid inlet for introducing a foaming fire extinguishing fluid at one end, and a cylindrical body forming a spout for the foamed fire extinguishing fluid at the other end; The cylindrical body includes a foaming net provided in the cylindrical body, and a foaming spray nozzle for spraying a foaming fire extinguishing liquid onto the foaming net, and the foaming fire extinguishing liquid introduced into the cylindrical body is foamed by the foaming net. The fire extinguishing foam is configured to spray from a spout, further comprising: a fire extinguishing foam fixed to the outer surface of the cylindrical body and spraying unfoamed foam fire extinguishing liquid in a direction substantially perpendicular to the axial direction of the cylindrical body; a water nozzle for self-defense spraying; a water supply pipe that separates a portion of the foaming fire extinguishing liquid from the foaming spray nozzle and supplies it to the self-defense spraying nozzle; a stop valve that controls opening and closing of the water supply pipe; The invention is characterized by being equipped with a pressure gauge that detects the spray pressure of the foaming fire extinguishing liquid sprayed from the spray nozzle.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Fig. 1 is a partially cutaway sectional view showing an embodiment of the fire extinguishing foam of the present invention, and Fig. 2 is a spout 17 thereof.
It is a front view seen from the side. Cylindrical body 11
consists of a main body base 13 and a tip 15 that forms a spout 17 attached to the distal end side of the main body base 13. A foaming spray nozzle 23 having a fire extinguishing inlet 21 is provided inside the main body base 13 .
A foaming net 19 is installed in front of the foaming spray nozzle 23.
is provided. 25 is a pressure gauge.

A water sprinkling pipe 33 is provided so as to be wound around the outer surface of the main body base 13, and this water sprinkling pipe 33 communicates with a water sprinkling intake 27 provided at the base of the foaming spray nozzle 23 via a water supply pipe 31. ing. 2
9 indicates a stop valve. In the watering pipe 33,
A water nozzle 23 for self-defense spraying is provided.

When the foaming fire extinguishing fluid is introduced from the fire extinguishing fluid introduction port 21, it is sprayed from the foaming spray nozzle 23, hits the foaming net 19 and further foams, and the foamed fire extinguishing fluid is sprayed from the spout 17.

If the fire is strong, opening the stop valve 29 will cause water to flow from the water dispersion intake 27 through the water supply pipe 31.
The extinguishing liquid before foaming is supplied to the water sprinkling pipe 33, and is sprayed from the water nozzle 35 for self-defense spraying. If a portion of the fire extinguishing fluid is separated for water spraying for self-defense spraying, the pressure of the foaming fire extinguishing fluid will decrease accordingly and the range of the foaming fluid will be shortened, so monitor the pressure gauge 25 to maintain the pressure at a predetermined value. adjust. The self-defense spray water nozzle 35 has a nozzle opening shape so that the self-defense spray 41 is sprayed in a fan shape as shown in FIG. The self-defense water spray 41 forms a kind of water curtain for the firefighters who support and operate the fire extinguishing foam (on the nozzle 23 side). This curtain of water blocks the radiant heat of the flame,
Team members can safely carry out firefighting activities.

Effects of the invention According to the invention, by providing a water nozzle for self-defense spraying on the outer circumferential surface of a fire extinguishing foam, a curtain of water is efficiently and reliably spread in front of the firefighter operating the fire extinguishing foam. can be formed and can block the radiant heat of the flame.

Moreover, foam fire extinguishing can be carried out while monitoring the spray pressure of the foaming spray nozzle using a pressure gauge, and the range of the foam fire extinguishing liquid, which is the original purpose, is not impaired.

Furthermore, without providing a separate water supply hose to the fire extinguishing foamer, it is possible to achieve foam fire extinguishing with a large foaming ratio and effective self-defense spraying using unfoamed fire extinguishing fluid. This firefighting foam is particularly useful as a medium foamer.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway sectional view showing an embodiment of the fire extinguishing foamer of the present invention, and FIG. 2 is a front view of the same as seen from the injection port side. 11... Cylindrical main body, 13... Main body base, 15...
...chip, 17... spout, 19... foaming net, 21... fire extinguishing liquid inlet, 23... foaming spray nozzle, 25... pressure gauge, 27... dispersion water intake,
29...Stop valve, 31...Water supply piping, 3
3...Water piping, 35...Water nozzle for self-defense spraying, 41...Self-defense spray watering.

Claims (1)

[Scope of Claim for Utility Model Registration] A cylindrical body having a fire extinguishing fluid inlet for introducing a foaming fire extinguishing fluid at one end and forming a spout for the foamed fire extinguishing fluid at the other end; The cylindrical body is equipped with a foaming net provided within the tubular body, and a foaming spray nozzle for spraying a foaming fire extinguishing liquid onto the foaming net, and the foaming fire extinguishing liquid introduced into the cylindrical body is foamed by the foaming net and sprayed from the spout. In the fire extinguishing foamer, the fire extinguishing foamer further comprises: a self-defense sprayer fixed to the outer surface of the cylindrical body and spraying unfoamed foam fire extinguishing liquid in a direction substantially perpendicular to the axial direction of the cylindrical body; a nozzle; a water supply pipe that extracts a portion of the foaming fire extinguishing liquid from the foaming spray nozzle and supplies it to the self-defense spraying water nozzle; a stop valve that controls opening and closing of the water supply pipe; and a stop valve that controls opening and closing of the water supply pipe; A fire extinguishing foamer comprising a pressure gauge for detecting the spray pressure of the foaming fire extinguishing liquid being sprayed.