JPS60210268A - Jet nozzle for fire fighting - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This device is characterized in that a liquid such as fire extinguishing water (liquid) can be uniformly injected over a wide range from an appropriate number of injection ports formed at the tip.

Conventionally available fire-fighting spray nozzles usually have only one spray port, making it difficult to spray liquid such as fire extinguishing water over a wide area.

The present invention eliminates the above-mentioned drawbacks.
It has an appropriate number of injection ports at its tip and can spray liquid such as fire extinguishing water uniformly over a wide area.

That is, the present invention has a tapered hollow shape, with four sections provided at the center inside the tip, and circular grooves provided at appropriate intervals on the outside thereof, and between the four sections and the circular grooves. A suitable number of injection ports are provided on the tapered outer circumferential surface,
A nozzle body with communication grooves provided between one side of the inner end of the injection port and the four parts, and between the other side of the inner end of the injection port and the circular groove, and the four parts of the nozzle main body, a circular concave yellow, The flow dividing plate is provided at the opening and the communication groove, and has holes for supplying liquid only to the recess and the circular groove.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In the figure, (a) is the nozzle body, which has a tapered hollow shape, and has a recess (1) in the center of its tip, and circular grooves (2) at appropriate intervals on the outside. A suitable number of injection ports (3) are provided between the four parts (1) and the circular groove (2) and open on the tapered outer circumferential surface.

Next, a communication groove (4) is provided between one side of the inner end of the one number of injection ports (3) and the recess (1), and further, a communication groove (4) is provided between one side of the inner end of the one number of injection ports (3) and the other side of the inner end of the appropriate number of injection ports (3). The side and the above circular groove (2
) are provided with communication grooves (5).

The communication groove (4) at the inner end of each injection port (3) (
The arrangement of 5) will be described in detail later, but it is for swirling the liquid injected from the injection port (3) as shown in FIG.

Next, a flow dividing plate (b) as shown in FIG. 4 is provided inside the nozzle body (a). As shown in Figure 2, the flow dividing plate [) has four parts (1) inside the nozzle body (cL), a circular groove (2), an injection port (3), and a communication groove (4) (5).
A hole (6) that fits the fourth part (1) of the nozzle body (α) is provided in the center part, and a circular groove (α) of the nozzle body (α) is provided on the outside. (
A suitable number of holes (7) are provided to accommodate 2).

It is also conceivable that the flow dividing plate (b) has a male thread formed on its outer periphery in advance and is screwed and fixed to a female thread (8) formed in advance in the nozzle body (α), but in the case of the embodiment shown in the drawings, The holder part (9) is screwed into the rear end of the nozzle body (cL) and is provided inside the dinosle body (zl).

The present invention having the above configuration has a hose "
(not shown) are connected, and pressurized water is supplied from the direction of the arrow in FIG.

The pressure water is divided into two streams by the flow dividing plate (b).

That is, from the hole (6) of the flow dividing plate (b) to the nozzle body (d
) and the hole (7) in the flow divider plate (b).
This is the flow from the nozzle body (α) to the circular groove (2).

Then, the pressurized water supplied to the recess (1) of the nozzle body (, +) is supplied from each communication groove (4) to one side of the inner end of each injection port (3), and the nozzle body (α) The pressurized water supplied to the circular concave groove (2) is supplied from each communication groove (5) to the other side of the inner end of each injection port (3), and is swirled as shown in Figure 5. It is injected from the injection port (3) and uniformly diffused over a wide range.

As described above, the present invention has a tapered hollow shape, with four parts provided at the center inside the tip, circular grooves provided at appropriate intervals on the outside, and a tapered groove formed between the four parts and the circular groove. A nozzle body having an appropriate number of jets r'+ opening on the outer periphery, and providing communication grooves between one side of the inner end of the injection port and the recess, and between the other side of the inner end of the injection port and the circular groove; , consisting of four parts of the nozzle body, a circular concave groove, an injection port, and a flow dividing plate provided with holes for supplying liquid only to the concave part and the circular concave groove, uniformly over a wide range. It is capable of spraying liquid such as fire extinguishing water.

Note that the present invention is effective not only for firefighting but also for spraying disinfectants and other liquids.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention. Figure 1 is a side view of the crucible, Figure 2 is a vertical sectional view of the main parts, Figure 3 is a front view of the inside of the nozzle body, and Figure 4 is a flow divider plate. Figures 3 and 5 are enlarged views of the inner end of the injection port. (α)...Nozzle body, ib)...Broadcast plate, (1)
... Four parts, (2) ... Circular groove, (3) ... Injection port, (4) (5) ... Communication groove, (6) (7) ...
hole. Patent Applicant Co., Ltd. Hiromitsu Patent Attorney Akiyoshi Yamamoto'lP1 Illustrated spear 3 Illustrated spear 4 Illustration, Figures 1-5

Claims (1)

[Claims] The tapered shaft has a hollow shape, and a recess is provided at the center of the inside of the tip, and circular grooves are provided at appropriate intervals on the outside of the recess, and between the recess and the circular groove, there is a A suitable number of injection ports are provided, and communication grooves are provided between one side of the inner end of the injection port and the four parts, and between the other side of the inner end of the injection port and the circular groove. , a jet for fire fighting, etc., comprising a flow dividing plate provided in the recess, the circular groove, the injection port, and the communication groove of the nozzle body, and having holes for supplying liquid only to the recess and the circular groove. Nosul.