JP2012135460A - Water discharge nozzle device for fire extinguishing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water discharge nozzle device for fire extinguishing which includes an angle adjustment device which can fix angles of two or more movable draining water pipes, changes the angles of the movable draining water pipes and can change an extinction area to an extinction object, changes the angle while draining water, and thereby can extinguish corresponding to a situation.SOLUTION: The following means are adopted for the water discharge nozzle device for fire extinguishing 1. First, a single large diameter receiving hole 7 is bored in a water supply side, two or more small diameter branch through-holes 8 are bored in a draining water side to be consecutive with the receiving hole 7, a branch fitting 4 in which immovable branch pipes 3 having angles each opening together are disposed to continue at distal ends of the two or more branch through-holes 8 toward the draining water side is included. Second, movable draining water pipes 5 having a discharge port 13 connected at distal ends of the immovable branch pipes 3 to freely turn are included. Third, an angle adjusting device 6 which can change or fix angles of two or more drain water pipes 5 to an opening direction or a settling direction is included, and the desired angles are set to be fixed.

Description

  The present invention relates to a fire-fighting water discharge nozzle apparatus having a plurality of movable water discharge pipes.

  As an effective fire extinguishing apparatus for fire extinguishing, there is a conventional water discharge nozzle. This water discharge nozzle was able to perform straight water discharge (bar-shaped water discharge) and spray water discharge. Straight water discharge is suitable for long-distance discharge, but has a small fire extinguishing area. On the other hand, spray water discharge has a wide fire extinguishing area, but can only discharge water at a short distance. Even if you want to perform spray water discharge with a wide fire extinguishing area, approaching the fire surface at the fire site is a dangerous act for the person doing the fire extinguishing, and safety is a priority, so the fire extinguishing area is narrow. The current situation relies on straight water discharge.

  Therefore, a water discharge nozzle that can maintain a water discharge distance equivalent to straight water discharge and at the same time can maintain a wide fire extinguishing area is desired, and a fire extinguishing nozzle device having a plurality of nozzle cylinders as shown in Patent Document 1 has been provided. The fire-extinguishing nozzle device disclosed in Patent Document 1 has a central nozzle cylinder and a plurality of peripheral nozzle cylinders protruding around the central nozzle cylinder.

  The feature of this fire-extinguishing nozzle device is that an air suction hole for sucking outside air into the side surface of the nozzle cylinder is formed. This makes it possible to increase the hydrophilicity including a large amount of bubbles ejected from a plurality of peripheral nozzle cylinders around the central gas-liquid mixed water stream including a large amount of bubbles ejected from the central nozzle cylinder and having increased hydrophilicity. The combined water flow combined with a plurality of gas-liquid mixed water flows can ensure the necessary increase in fire extinguishing and provide effective fire fighting activities.

  However, there are a plurality of nozzle cylinders in the fire extinguishing nozzle device shown in Patent Document 1 (in the embodiment, a central nozzle cylinder and four surrounding nozzle cylinders), but the angle toward the water discharge direction is fixed. As a result, the fire extinguishing area could not be changed as necessary.

Japanese Patent Application Laid-Open No. 2009-291699

Therefore, provided with a plurality of movable water discharge pipes (movable water discharge pipes having discharge ports at the front end portions), and an angle adjusting device capable of changing and fixing the angle in a direction in which the movable water discharge pipe is opened or converged. An object of the present invention is to provide a fire-extinguishing water discharge nozzle device capable of changing the fire-extinguishing area for a fire-extinguishing target object by changing the angle of the movable water discharge pipe by the angle adjusting device.
It is another object of the present invention to provide a fire-extinguishing water discharge nozzle device capable of changing the angle of the movable water discharge pipe even during water discharge and capable of extinguishing fires in response to changes in the situation.

In order to solve the above-described problems, the present invention employs the following means in a fire-fighting water discharge nozzle device.
First, a single large-diameter receiving hole is drilled on the water supply side, and a plurality of small-diameter branch through holes are continuously drilled on the water discharge side. And a branch fitting in which a stationary branch pipe having an opening angle toward the water discharge side is continuously provided.
Second, it has a discharge port at the tip, and a movable water discharge pipe that is pivotally connected to the tip of the stationary branch pipe.
Thirdly, an angle adjusting device that can change and fix the angle in a direction in which a plurality of movable water discharge pipes are opened or converged is set, and after being set to a desired angle, it can be fixed.

According to the present invention, a stationary branch pipe is connected to each branch through hole of a branch fitting having a plurality of branch through holes continuous with a single large-diameter receiving hole at an opening angle toward the water discharge side. ,
A water discharge nozzle for fire extinguishing, in which a movable water discharge pipe is rotatably and fixedly connected to the tip of this stationary branch pipe, and the angle can be changed and fixed in a direction to open or converge a plurality of movable water discharge pipes by an angle adjusting device. Because it is a device, it is possible to secure the same water discharge distance as straight water discharge, and at the same time, widening the water discharge in a ring shape enables a wide range of powerful water discharge, enabling a large area to be extinguished against the fire surface. In addition, with the existing straight water discharge, it is not possible to stop the violent emission of fire smoke from the opening of the building or the corridor in the refractory, but the discharge port of the normal water discharge nozzle is used as the discharge port of the fire extinguishing nozzle. Thus, the water curtain surface state by shower-like water discharge can be set, and the fire smoke surface can be immediately wrapped to suppress the flame.

  In addition, by bundling the movable water discharge pipes so as to be in a state close to direct water, high-pressure large-scale water discharge similar to straight water discharge becomes possible. Moreover, it became a fire-extinguishing water discharge nozzle device that can change the fire-extinguishing area in response to the situation change by changing the angle of the movable water discharge pipe in the middle of water discharge.

Explanatory drawing which shows the state which attached the water discharge nozzle device for fire extinguishing to the hose side straight pipe Cross-sectional explanatory drawing of branch fitting Side view of branch fitting from the receiving hole side Side view of the branch fitting from the stationary branch pipe side Cross-sectional explanatory drawing of a water discharge nozzle device for fire fighting Cross-sectional explanatory drawing of a movable water discharge pipe connected to a stationary branch pipe Side view from the water discharge pipe side of the water discharge nozzle device for fire fighting

Hereinafter, embodiments of the present invention will be described together with examples according to the drawings.
Drawing 1 is an explanatory view showing the state where the water discharge nozzle device for fire extinguishing was attached to the hose side straight pipe. In FIG. 1, reference numeral 1 is a fire-extinguishing water discharge nozzle device, and reference numeral 2 is a hose-side straight pipe. The hose-side straight pipe 2 is connected to one end, a water supply hose not shown on the right end side in FIG. 1, and connected to the branch metal fitting 4 of the fire-extinguishing water discharge nozzle device 1 on the other end, the left end side in FIG. The fire-fighting water discharge nozzle device 1 includes a branch fitting 4 having a stationary branch pipe 3, a movable water discharge pipe 5 connected to the stationary branch pipe 3, and an angle adjusting device 6 for changing and fixing the angle of the movable water discharge pipe 5. .

  2 and 3, the branch metal fitting 4 has a single large-diameter receiving hole 7 formed on the water supply side, that is, the hose side straight pipe 2 side, and eight small-diameter branches on the water discharge side. The body 9 in which the through-hole 8 is continuously drilled with the receiving hole 7 and the tip of the eight branch through-holes 8 are connected to the water discharge side as shown in FIGS. And a stationary branch pipe 3 that is extended with an opening angle. The sum of the opening areas of the eight branch through holes 8 is substantially equal to or smaller (narrower) than the opening area of the receiving hole 7. In the embodiment, it is reduced. In addition, the angle that opens toward the water discharge side here is, according to FIG. 2, that the eight stationary branch pipes 3 are directed toward the water discharge side with reference to the central axis 10 that extends from the hose side straight pipe 2 in the water discharge direction. It is an angle that spreads, that is, the tips of the eight stationary branch pipes 3 move away toward the water discharge side.

  As shown in FIG. 2 and FIG. 3, the stationary branch pipe 3 is fixedly connected to the trunk portion 9 and is not movable. Although there are eight branch through holes 8 and immobile branch pipes 3 in the embodiment, the present invention is not limited to eight as long as there are a plurality of them. A substantially spherical body 11 for rotatably connecting the movable water discharge pipe 5 is formed at the water discharge side tip of the stationary branch pipe 3.

  As shown in FIG. 6, a movable water discharge pipe 5 is rotatably connected to the tips of the eight stationary branch pipes 3. 6 and 5, reference numeral 12 denotes a joint fitting for connecting the stationary branch pipe 3 and the end of the movable water discharge pipe 5. The joint fitting 12 is fixed to the end of the movable water discharge pipe 5, but can be rotated without detaching from the substantially spherical body 11 of the stationary branch pipe 3 in order to make the movable water discharge pipe 5 rotatable. The substantially spherical body 11 is held.

  As shown in FIGS. 5 and 6, a discharge port 13 is attached to the water discharge side tip of the movable water discharge pipe 5. There is a nozzle tip fixing ring between the discharge port 13 and the tip of the movable water discharge pipe 5, and a nozzle tip 14 for adjusting the water discharge state is fixed to the nozzle tip fixing ring. The nozzle tip 14 enables spray water discharge. Such a structure of the discharge port 13 is used for a normal fire-fighting water discharge nozzle, and need not be unique to the present invention.

  As shown in FIG. 5, the angle adjusting device 6 changes and fixes the angle of the movable water discharge pipe 5, and includes an angle adjusting guide 15 attached to the body portion 9 of the stationary branch pipe 3, and an angle adjusting guide 15. And an angle adjustment shaft 17 mounted between the outer periphery of the movable water discharge pipe 5 and the angle adjustment guide plate 16.

  The angle adjustment guide 15 is provided on the ring portion 19 formed on the inner side with a female screw portion that is screwed into the male screw portion 18 formed on the outer periphery of the trunk portion 9 of the branch metal fitting 4, and on the water discharge side end of the ring portion 19. And a holding flange 20 that holds the angle adjustment guide plate 16. The male screw portion 18 and the female screw portion of the ring portion 19 of the angle adjusting guide 15 are fixed unless a strong force necessary for rotation is applied from the outside.

  The angle adjustment guide plate 16 is a donut-shaped disk having a hollow portion in the center where the trunk portion 9 of the branch metal fitting 4 is accommodated. A shaft mounting piece 21 is erected in the vicinity of the outer periphery of the water discharge side surface of the angle adjustment guide plate 16. An angle adjustment shaft 17 corresponding to the movable water discharge pipe 5 is rotatably mounted on the shaft mounting piece 21. The other end of the angle adjustment shaft 17 is rotatably mounted on a shaft attachment piece 21 that is erected on the outer periphery of the movable water discharge pipe 5.

  Accordingly, when the angle adjustment guide 15 is rotated and the angle adjustment guide 15 is moved in the direction opposite to the water discharge side in the trunk portion 9 of the branch metal fitting 4, the angle adjustment guide plate 16 held by the angle adjustment guide 15 is moved to the water discharge side. The angle adjustment shaft 17 attached to the shaft mounting piece 21 of the angle adjustment guide plate 16 is pulled in the opposite direction to the water discharge side.

  As a result, the angle adjusting shaft 17 pulls the movable water discharge pipe 5 in the direction opposite to the water discharge side via the shaft attachment piece 21. At this time, since the stationary branch pipe 3 and the movable water discharge pipe 5 are rotatably connected by the substantially spherical body 11 and the joint fitting 12, the movable water discharge pipe 5 rotates the water discharge side tip outward. Be made. As a whole, the eight movable water discharge pipes 5 have an opening angle toward the water discharge direction. Water discharge in this state is suitable for securing a wide fire extinguishing area.

  Conversely, when the angle adjustment guide 15 is rotated in the opposite direction, the angle adjustment guide 15 moves to the water discharge side in the trunk portion 9 of the branch fitting 4. As a result, the angle adjustment guide plate 16 held by the angle adjustment guide 15 also moves to the water discharge side. By the movement of the angle adjustment guide plate 16 to the water discharge side, the angle adjustment shaft 17 pushes the movable water discharge pipe 5 into the water discharge side and rotates the water discharge side tip inward. As a whole, the angle is such that the eight movable water discharge pipes 5 converge toward the water discharge direction. Water discharge in this state is suitable for increasing the water discharge distance, although the fire extinguishing area is reduced.

DESCRIPTION OF SYMBOLS 1 ......... Water discharge nozzle device for fire extinguishing 2 ... ・ ・ ・ ・ ・ Hose side straight pipe 3 ... ・ ・ ・ ・ ・ Fixed branch pipe 4 ......... Branch fitting 5 ... Movable water discharge pipe 6 ... Angle adjustment device 7 ... Receiving hole 8 ... Branch through hole 9 ... ··························································································································· ······· Nozzle tip 15 ··························································································・ Male thread part 19 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Ring part 20 ・ ・ ・ ・ ・ ・ Retaining flange

Claims (1)

A single large-diameter receiving hole is drilled on the water supply side, a plurality of small-diameter branch through holes are continuously drilled on the water discharge side, and continuous to the tips of the plurality of branch through holes. A branch fitting having a stationary branch pipe having an angle that opens toward the water discharge side;
A movable water discharge pipe having a discharge port at the tip, and rotatably connected to the tip of the stationary branch pipe;
An angle adjustment device that can change and fix the angle in a direction to open or converge a plurality of movable water discharge pipes,
A water discharge nozzle device for fire extinguishing characterized in that it can be fixed after being set to a desired angle.

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