JPH0450046Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is a dry sprinkler system, more specifically, a dry sprinkler system, in which piping is filled with fire extinguishing water via compressed air.
The present invention relates to a dry sprinkler system equipped with a sprinkler head used in so-called dry sprinkler equipment, which sprays fire extinguishing water under pressure after the heat-sensitive operation of the sprinkler head.

(Prior Art) Conventionally, in this type of dry sprinkler system, there is a system as shown in FIG. 5 that is most similar to the present invention.

That is, this device connects the water supply port 4b of the water pipe 2b.
A sprinkler head 9b is attached to the lower part of the cylindrical apparatus body 1b connected to the water pipe 2b side, and the upper opening 14b of the apparatus body 1b connected to the water pipe 2b side is connected to the valve cap 13b.
A main rod 15b is provided hanging down from the upper opening 14b so as to be closed through the sprinkler head 9b, and a plurality of sub-rods 29, . The structure is as follows.

In use, when the sprinkler head 9b becomes heated, the sub-rod 17b falls toward the sprinkler head 9b and falls out of the apparatus, and the main rod 15b falls a predetermined distance within the apparatus body 1b together with the valve cap 13b. The upper opening 14b of the apparatus body 1b is opened, thereby allowing the fire extinguishing water in the water pipe 2b to flow into the apparatus body 1b under pressure and being sprayed from the sprinkler head 9b.

(Problems to be Solved by the Invention) However, in the above-mentioned device, the member that falls from the device body 1b to the sprinkler head 9b side during thermal operation is the sub-rod 2.
Since the sub-rods 9,... are rod-shaped, there is a concern that the fall of the sub-rods 29,... will not necessarily be smooth, and there is a problem that it may interfere with the sprinkling of water from the sprinkler head in the event of a fire. It was hot.

The present invention was developed to solve these problems, and its purpose is to allow the falling member interposed between the rod and the sprinkler head to fall extremely smoothly and reliably during heat-sensitive operation. be.

(Means for Solving the Problems) A means for solving the above problems of the present invention is to provide a substantially spherical ball body having at least one pair of protrusions and recesses between the rod and the sprinkler head as described above. , the convex portion and the concave portion are interposed in a state in which a plurality of the convex portions and the concave portions are fitted into each other in the vertical direction and stacked one on top of the other in a multistage manner.

(Function) In other words, since a plurality of ball bodies are interposed in a state in which the convex portion and the concave portion are fitted into each other as described above, the ball bodies do not always roll and the above-mentioned fitted state is maintained. When the sprinkler head is maintained and the sprinkler head at one end is thermally operated, the fitted state between each convex portion and the concave portion is released, and the plurality of balls, which have a substantially spherical shape as described above, roll and roll out of the device body. It will fall extremely smoothly and reliably.

(Example) Hereinafter, embodiments of the present invention will be described according to an example shown in the drawings.

FIG. 1 shows an exemplary dry sprinkler system.

In FIG. 1, 1 is a device body provided hanging down from a water supply port 5 of a joint 4 formed by connecting two water pipes 2 and 3, and is screwed onto the inner circumferential surface of the water supply port 5. It is composed of an upper cylinder 6, a middle cylinder 7 fitted into the lower part of the upper cylinder 6, and a lower cylinder 8 fitted externally into the lower part of the middle cylinder 7. 9 Multi-type sprinkler head with upper opening 10
is screwed onto the inner peripheral surface of the lower opening 11 of the lower cylindrical body 8. 12 is the sprinkler head 9
It shows the deflector installed at the bottom of the. 13 is a valve cap which closes the opening 14 of the upper cylinder 6; 15 is a rod whose upper end is fixed to the valve cap 13 with a set screw 16; It is provided. 1
7, . . . are a plurality of rods (15 in the embodiment) stacked and interposed between the rod 15 and the sprinkler head 9.
) approximately spherical ball bodies, each ball body 17,...
. . are formed with spherical convex portions 18 and concave portions 19 as shown in FIG. 2, and the convex portions 18 and concave portions 19 of the plurality of ball bodies 17, .
More than half of the ball bodies 17, . . . are fitted into the guide sleeve 20, and a portion of the rod 15 is also fitted into the guide sleeve 20. Reference numeral 21 denotes a support plate installed between the upper end of the middle cylinder 7 and the inner peripheral surface of the upper cylinder 6, and the rod 1 is inserted into the central hole 22 of the support plate.
5 is inserted and supported. Reference numeral 23 denotes a support plate mounted between the lower end of the middle cylinder 7 and the inner peripheral surface of the lower cylinder 8, and the guide sleeve 20 is erected at the center of the support plate. 24 indicates a heat sensitive member within the sprinkler head 9.

Next, to explain the operation of the dry sprinkler system constructed as described above, first, the sprinkler head 9 becomes heat-sensitive, and the heat-sensitive member 2
4 comes off and each ball body 17, . . . as shown in FIG.
The fitting state between the convex part 18 and the concave part 19 is released, and the balls 17, . Then, the valve cap 13 falls down a predetermined distance along with the valve cap 13, and the valve cap 13 is stopped by the support plate 21, and the rod 15
will stop within the device body 1. As a result, the upper opening 14 of the apparatus body 1 opens and fire extinguishing water flows into the apparatus body 1 and is sprayed from the deflector 12 of the sprinkler head 9.

In this case, each ball body 17, . Therefore, water sprinkling from the sprinkler head 9 can be performed smoothly without any hindrance.

Note that the shapes of the convex portions 18 and concave portions 19 of the ball body 17 are by no means limited to the hemispherical shape of the above embodiment; It is only necessary that a convex portion 18 and a concave portion 19 be respectively formed in each ball body 17, .

Furthermore, the number of ball bodies 17 is by no means limited to this embodiment, and in short, a plurality of ball bodies 1
7,... is rod 15 and sprinkler head 9
It is sufficient if there is an interposition in between.

Further, in this embodiment, the ball bodies 17, . good.

Furthermore, although a multi-type sprinkler head 9 is used in this embodiment, the type of sprinkler head 9 is by no means limited to this, and it is also possible to use a so-called frame type or flash type sprinkler head 9. It is.

Furthermore, the device body 1 has an upper part as in the embodiment.
It is composed of three cylindrical bodies 6, 7, and 8 in the middle and lower part, but it does not necessarily have to be composed of a plurality of cylindrical bodies.For example, it may be formed integrally with one cylindrical body. It may be something.

Further, in this embodiment, the upper opening side of the device body 1 is connected to the water distribution pipes 2 and 3 via the joint 4, but the joint 4 is not necessarily necessary, and for example, the device body can be connected directly to the approximately T-shaped water pipe. 1 may be connected.

Others: guide sleeve 20, support plates 21, 2
The configuration and presence/absence of the third element and the like are by no means limited to the embodiments, and can be freely changed in design.

(Effects of the invention) As described above, the present invention provides an interposition between the rod and the sprinkler head by stacking a plurality of substantially spherical balls having at least one pair of convex portions and concave portions that can be fitted into each other in a multi-stage manner. Because of this structure, each of the plurality of balls becomes approximately spherical after the heat-sensitive operation of the sprinkler head, which makes the device easier to fall than a rod-shaped falling member such as a sub-rod that was conventionally interposed between the rod and the sprinkler head. This has resulted in a particularly remarkable effect of falling very smoothly and reliably to the outside of the body.

As a result, there is an advantage that a stable water sprinkling condition can be obtained without interfering with water sprinkling from the sprinkler head.

Moreover, since the structure of the dry sprinkler device according to the present invention is extremely simple as described above, there is also an advantage that manufacturing of the device such as mounting the ball body can be performed extremely easily.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a dry sprinkler system as an example. FIG. 2 shows the ball body, A is a plan view, and B is a sectional view taken along the line A-A of A. FIG. 3 is a sectional view of the main part showing the opening state of the device body. FIG. 4 is an enlarged cross-sectional view of the main part showing the falling state of the ball body. FIG. 5 is a schematic vertical sectional view showing a conventional example. 1...Equipment body, 2, 3...Water pipe, 9...
Sprinkler head, 13... valve cap, 15... rod, 17... ball body.

Claims (1)

[Scope of utility model registration request] A cylindrical device body 1 vertically connected to the water supply port side of a water distribution pipe, a sprinkler head 9 attached to the lower part of the device body 1, and an upper opening of the device body 1 connected to the water distribution pipe. The upper opening 1 is closed in order to close the portion 14 via the valve cap 13.
The rod 15 is vertically installed inside the device body 1 from the 4th side.
In the dry sprinkler system, there are at least one pair of protrusions 18 and one recess 1 between the lower surface of the rod 15 and the upper surface of the sprinkler head 9.
A substantially spherical ball body 17 having a
A dry sprinkler device characterized in that a plurality of recesses 19 and 19 are fitted vertically to each other and are stacked in a multistage manner.