JPS6168065A - Fire extinguishing nozzle - 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 Field of Industrial Application This invention is directed to a nozzle body from which a fire extinguishing agent such as foam or water is discharged. This invention relates to a fire extinguishing nozzle that can be adjusted to the extinguishing point and is devised so that the operating force for adjusting the flapper is small.

Conventional technology The discharge opening of the nozzle body (1 or 2 flaps with a U-shaped cross section is pivoted, and the opening degree of the flapper with respect to the nozzle body is adjusted to cause discharge to collide with the inner surface of the flapper. Control the direction of the flow to the extinguishing point, that is, the reach distance, and prevent it from spreading.5
KL is known. One feature of a single flapper is that it can be discharged to a nearby fire extinguishing point by adjusting the discharge flow sufficiently to block it, but it is recommended to operate the flapper in such a discharge direction during discharge. If this is the case, an extremely large operating force will be required due to the large impact force of the discharge flow, and it will not be possible to obtain a spread that evenly covers the extinguishing point, and the discharge distance will be long. The disadvantage is that it is difficult.

In addition, when two flappers are operated to open and close mutually, the discharge distance becomes longer and a discharge flow with less eccentricity with respect to the extinguishing point can be obtained, but it becomes difficult to discharge at close range, and also, as mentioned above, Similar to the case of a single flapper, the impact force of the discharged flow on the flapper is extremely small, and there is a disadvantage that a large force is required to open and close the flapper.

Problems to be Solved by the Invention This invention has problems in that it is difficult to adjust the perspective of the discharge flow, and furthermore,
This is proposed in order to eliminate the drawback of conventional fire extinguishing nozzles, which require a large amount of force to operate.

Means for Solving the Problems In order to solve the above problems, the present invention provides a nozzle body (1) that is connected to a supply source of extinguishing agent, and a discharge port (1a) of this nozzle body (1). ) and a flapper (3) whose discharge direction can be freely adjusted by a discharge direction adjustment mechanism (4),
The flapper (3) is a left-right regulating body (7) that regulates the left-right direction of the discharge flow of extinguishing agent discharged from the discharge port (1a).
(7) and the first guide body (8) provided on the left and right regulating bodies (7) so as to cause the above-mentioned discharge flow to collide with the lower surface.
), and the left and right regulating body (force (force) is provided at the first guide body (8) with a narrow gap facing the discharge tip (8a) of this first guide body (8). a second guide body (
9).

Examples and effects Next, one embodiment of the present invention will be described based on the drawings.

Fig. 1 shows a side view of the main parts of the fire extinguishing nozzle, Fig. 2 shows a plan view of the flapper, and Fig. 3 shows a view from arrow A in Fig. 2. The left side of the figure is connected to a pump or supply pipe as a supply source of extinguishing agent (not shown), and the nozzle body (
1) is configured to be able to move up and down and swing to the left and right around the left side of FIG. to the fulcrum bin +21 (21 to the flapper (
By rotatably supporting the base (3a) of 3) and rotating the operating member (5) of the discharge direction adjustment mechanism (4) in the arrow direction about the fulcrum @(6), Flapper (
3) is held at any rotational position illustrated by the solid line or the two-dot chain line in the figure, so that the direction in which the extinguishing agent is discharged by the nozzle body (1) can be adjusted.

The flapper (3) in the illustrated example has left and right regulating bodies (forces (7), ), and a first guide body fixed to the left and right regulating bodies (7) (force (7)) so as to contact most of the parts of the left and right regulating bodies (7) and bridge the upper edges of the left and right regulating bodies (7). 8), left and right side plates (9a) (9a
) and the bottom plate (9b).
9a) is fixedly installed, and a second guide body (9) in which a discharge port (Bl) is formed in front of the discharge tip (8a) of the first guide body (8). The discharge flow of the extinguishing agent discharged from the discharge port (1a) of the nozzle body (1) is regulated in the left and right direction by the left and right regulating body (71, f force) and is discharged by the flapper (3). At the discharge control position, where the discharge flow is controlled so that it is directed to the extinguishing point, which is discharged from the outlet (Bl) and is located at a certain distance from the nozzle body (1), as shown by the arrow in Figure 4. , the discharge flow from the discharge port (1a) of the nozzle body (1) collides with the lower surface of the guide body (8) of the square structure 1 at a small collision angle (04), and is deflected downward in the figure. Next, the second guide (
9) collides with the top surface and is deflected upward to release the discharge port (Bl
The spread of the discharge flow at this time, that is, the discharge flow pattern (a), is modeled and shown by the two-dot chain line in FIG. 6 in plan view.

As a result of the collision with the first guide body (8), a collision force ("l") is applied at a distance (1) from the fulcrum bottle (2), and the collision force ("l") is applied to the second guide body (9). Due to the collision, the collision force (f2) acts at a distance (J-2), so
In this way, the bottom of the moment in opposite directions is the flapper (
3), and the total moment f
+xf+ -f2X42 omitted 0 [-f6,: t is turned off, and as a result, the flapper (3) is adjusted toward the extinguishing point. f? Since only a small operating force is required to do this, the flapper (3) can be easily directed to the extinguishing point with a small amount of force. In addition, the discharge flow that has successively collided with the guide body (8) of stripe 1 and the second guide body (9) is sufficiently decelerated and the phlegm is constricted by the narrow gap. 8) The flow of the spider's discharge was sufficiently wide to envelop the extinguishing point.

The flapper (3) is in the fully open position, as shown by the solid line in FIG. In order to maintain the discharge flow, the discharge flow is not deflected by the guide bodies f8) and (9), and the discharge pattern (
bl, and when the first guide (8) is held in the closed position blocking the front of the discharge port (1a) as shown in Fig. 5, the discharge flow is the first guide +8)ic. It is deflected downward at an angle close to a right angle, and the ejection speed is greatly reduced, colliding with the second guide body (9) at a nearly right angle and colliding with the second guide body (9).
9), the discharge flow turns to the lower part (9), resulting in the discharged butter y (Q) shown by the dotted line in FIG.

Further, the first guide body (8) in the illustrated example has a long living body part (8b
), the front discharge tip (8a) is formed into a bent shape, and the bottom of the second guide body (9)! (9b) is composed of a bent front piece (9C) and a rear piece (9d), and is designed to direct the discharge flow from the discharge port (la) to the first guide body (8). The lack of the collision force (fl) when the collision angle (α) is small and the flapper (3) is located a little higher than in FIG. Collision force (f3) that acts on the second guide body (9) due to a portion of the discharge flow colliding with the lower surface of
This allows the operating force of the flapper (3) 9 to be small even when the discharge flow is directed to a distant position.

Note that due to the discharge pressure of the discharge flow, etc., the second guide body (9
)K: If the collision force (f2) acting on the first guide body (8) is smaller than the collision force (f+) acting on the first guide body (8), the rear piece (
It is also possible to make the bending angle of 3d) shallow<L, -' so that the discharge flow hits its upper surface and a downward impingement flow occurs on the rear piece (ad).

The shape of the flapper (3), that is, the left and right regulating body (force, (7)
, guide body rs; , The shape of (9) may be any shape as long as it satisfies the configuration of the first invention mentioned above, and is not limited to the illustrated example.

The illustrated discharge direction adjustment mechanism (4) connects the left and right regulating bodies f7) (7) of the flapper (3) and the lower part of the operating member (5) with a connecting rod (10), and connects the fulcrum m (6). The operating member guide +U+ notch (11aX11a)...o) which is attached to the nozzle body (1) with the
5) are engaged with each other by the force of a spring, for example, to lock the operating member (5) in its respective rotational position;
When the lock release knob (IQ) is pressed, the locking pawl escapes from the notch (Ila) 61 by a link mechanism (not shown), so the lock is released and the operating member (5) can be rotated freely. In addition to the illustrated example, various mechanisms can be used.

Effects of the Invention The fire extinguishing nozzle according to the present invention is configured as shown in the upper part 1, and the discharge flow discharged from the discharge port 1a) of the nozzle body (1) is controlled by the left and right regulators f7) (7). ), the left and right regulating body (force (
Since the discharge flow sequentially collides with the lower surface of the first guide body (8) and the upper surface of the second guide body (9), which are provided in 7), the discharge flow is decelerated by these collision operations and spreads sufficiently. Therefore, the nozzle body (1) of the flapper (3)
), the collision angle is adjusted and the discharge flow is divided into the desired spread and discharge distance, and the discharge flow from the nozzle body (1) is adjusted. By reducing the collision angle at which the first guide body (8) collides with the first guide body (8), the discharge flow from the second guide body (9) has a small spread and can reach a long distance. The spread of the discharge flow increases as the dog is sheltered, making it effective for extinguishing fires at close range.By adjusting the discharge direction of the flapper (3) in this way, the guide body (s+, (9) ) can freely control the arrival position of the discharge flow both far and near.The collision force acting on the lower surface of the first guide body (8) and the 20th guide body (
9) Since the collision forces acting on the top surface are in opposite directions,
As a result of the moments due to these collision forces being canceled out, the moment due to the total collision force acting on the flapper (3) becomes extremely small, and the moment due to the total collision force acting on the flapper (3) becomes extremely small.
Only a small amount of operating force is required to adjust the flapper toward the extinguishing point, and the flapper (3) can be easily and quickly directed to the extinguishing point with a small amount of force. It is.

[Brief explanation of drawings]

The figures show one embodiment of the invention, with Figure 1 being an overall side view;
Figure 2 is a plan view of the flapper, Figure 3 is a view from arrow A in Figure 2, Figures 4 and 5 are explanatory side views of the flapper in its respective operating positions, and Figure 6 is a plane view of the discharge pattern. It is a diagram. Description of symbols (1)...Nozzle body (1a)...Discharge opening (2)...Fully pin (3)...Flapper (3a)...Base (3b)...Tip ( 4)... Ejection direction adjustment mechanism (5)... Operation member (6)... Fulcrum shaft (7)... Left and right regulating body f8) (9)... Guide part (8a)...
・Discharge tip (8b)...main body (9a)
...Left and right side plates (9b)...Bottom plate (9C
)...Front piece (9d)...Rear piece (1 [
...Connection rod αD...Operation member guide (lla)
・・・Notuchi f13...Lock release knob (B)・
...Opening part fal (bl (c)... Release pattern (ft) (f2)... Collision force (J+) (
1z)...-Distance (d...Collision angle

Claims (1)

[Claims] A fire extinguishing device comprising a nozzle body that communicates with a supply source of extinguishing agent, and a flap that is pivotally supported at the discharge port of the nozzle body and whose discharge direction can be freely adjusted by a discharge direction adjustment mechanism. In the nozzle, the flapper includes a left and right regulating body that regulates the left and right direction of the discharge flow of extinguishing agent discharged from the discharge port, and a first guide body provided on the left and right regulating body so as to cause the discharge flow to collide with the lower surface. A regulator is provided on the left and right regulating bodies with a narrow gap in opposition to the discharge tip of the first guide, and allows the discharge flow deflected by the first guide to collide with the upper surface thereof. A fire extinguishing nozzle comprising: a second guide body formed so as to deflect the extinguishing point again toward the extinguishing point.