JP2717341B2 - Sprinkler head having fluid filling confirmation function and fluid filling confirmation method using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler head having a function of confirming the filling of a fluid and a method of confirming the filling of a fluid using the sprinkler head.

[0002]

2. Description of the Related Art Conventionally, as this kind of sprinkler head, for example, there is one disclosed in Japanese Utility Model Laid-Open No. 2-109661 by the present applicant.

[0003] That is, as shown in FIG. 4, the conventional structure is configured such that the plug 4 is pressed and held from below to close the outlet 5 of the head frame 1.
The head frame 1 is mounted on a ceiling surface of a room or the like so as to operate when a fire occurs when the fire extinguishing water is filled in the head frame 1.

[0004]

However, the plug 4 in the above-mentioned prior art has only a function of simply closing the outlet 5 of the head frame 1, and the fire extinguishing water actually exists in the head frame 1. There was a drawback that it was not possible to check from outside whether it was full.

[0005] Therefore, if the fire extinguishing water is not filled in the head frame 1 due to a poor connection in the piping, etc., this cannot be discovered in advance, which may hinder the fire extinguishing work by the sprinkler head. It had a problem.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and has been made in consideration of the followings. It is an object of the present invention to make it possible to detect a connection failure or the like in advance.

[0007]

That is, in order to solve the above-mentioned problems, the present invention always employs a sprinkler head main body 27.
When the sprinkler head main body 27 is filled with fire extinguishing water or the like, the movable rod 11 that is exposed to the outside of the sprinkler head main body 27 is
Is a sprinkler head provided at the center of the sprinkler.

A feature of the method for confirming the filling of the fluid in the sprinkler head according to the present invention is that the sprinkler head is always located in the sprinkler head main body 27, and the sprinkler head is filled with fire extinguishing water or the like when the sprinkler head main body 27 is filled. The point is to check whether or not the sprinkler head main body 27 is filled with fire extinguishing water by visually observing the movable bar 11 provided at the center of the head main body 27 and exposed to the outside from below .

[0009]

Therefore, in the sprinkler head having the above-described structure, for example, when the fire extinguishing water is filled in the sprinkler head main body 27 , the movable rod 11 moves the sprinkler head main body 27 by the water pressure of the fire extinguishing water . When the fire extinguishing water is not full, the movable rod 11 does not protrude outward from the center . That is, it is possible to easily check whether or not the fire extinguishing water is filled in the sprinkler head main body 27 by visually observing the bare state of the movable rod 11 from below .

[0010]

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

In FIG. 1, reference numeral 1 denotes a head frame in which a fire extinguishing water inflow passage 2 is formed, and a substantially cylindrical frame 3 is screwed to a lower portion of a peripheral edge of the head frame 1.

Reference numeral 4 denotes a plug for closing an outlet 5 formed in the lower part of the head frame 1. A flange 6 is formed on the periphery of the lower end of the plug 4, and a lower side is formed substantially in the center. A through hole 8 having a screw portion 7 formed therein is formed in the inner peripheral surface, and the upper end of the through hole 8 is formed to have a small diameter.

Reference numeral 9 denotes a screw body screwed to the screw portion 7 of the plug body 4. A through hole 10 having a hexagonal lower portion is formed at the center of the screw body 9 through the through hole 8 of the plug body 4. It is pierced in communication with. Note that a seal (not shown) is provided between the screw body 9 and the screw portion 7 of the plug body 4.

Numeral 14 denotes a resilient body made of a disc spring whose surface is coated with a fluororesin, and applies a constant pressing force between the lower end of the outlet 5 of the head frame 1 and the upper surface of the flange 6 of the plug 4. The elastic body 14 is fitted in a tensioned state, and the inner peripheral surface of the elastic body 14 is fitted into a notch 6 a formed in the flange 6 of the plug 4.

Reference numeral 15 denotes a bent deflector connected to the outer peripheral edge of the plug 4 at its upper end, and a guide ring 16a slidably protruding downward from the outer peripheral surface of the head frame 1 at the upper end thereof. 16 are connected, and function as a guide when the plug 4 falls.

Reference numeral 17 denotes a resiliently deformable locking member which is formed in a partially notched ring shape and whose diameter is enlarged or reduced.

Reference numerals 18 and 19 denote a pair of holding bodies for holding and holding the locking body 17, and a hole 18a is formed on the upper surface of the upper holding body 18 so that the lower end of the screw body 9 can be fitted therein. As well as
A screw portion 18c is engraved on the inner peripheral surface of the cylindrical portion 18b, and the cylindrical portion 18b of the upper holding member 18 is slidably inserted into the cylindrical portion 19a of the lower holding member 19. Have been.

Reference numerals 20 and 21 denote tapered surfaces formed on the outer peripheral edge of each of the holding members 18 and 19, and the distance between the holding members 17 and 19 is set inward so as to hold the locking member 17 in an expanded state therebetween. The locking member 17 is held between the tapered surfaces 20 and 21 and the inner peripheral surface of the inward convex portion 22 formed on the inner peripheral edge of the lower end portion of the head frame 1.

Reference numeral 23 denotes a lock screw screwed into the screw portion 18c of the upper holding body 18, and a through hole 23a is formed at the center thereof in the axial direction. Reference numerals 24, 25, and 26 denote a heat-insulating packing, a heat-sensitive member, and a ring-shaped soluble fusible member interposed between the flange portion 23b formed at the lower end of the lock screw 23 and the lower end of the lower holding member 19. Shown respectively. The sprinkler head main body 27 is composed of the above members.

Reference numeral 11 denotes a movable rod having a rod-shaped portion 11a protruding from the through hole 10 of the plug 4 at the upper end and a pin 11b at the lower end. The movable rod 11 is connected via an elastic body 12 composed of a coil spring. It is inserted into the screw body 9 so as to be able to advance and retreat, and is normally urged upward by the elastic body 12 so that the tip of the pin 11b has the lower surface of the lock screw 23 constituting the lower end surface of the sprinkler head main body 27 as shown in FIG. It is set to be flush with. Incidentally, fluorescent paint is formed by coating deposited on the lower end outer peripheral surface of the pin 11b of the movable bars 11.

Reference numeral 13 denotes an O-ring mounted on the outer peripheral surface of the movable rod 11 for sealing between the screw body 9 and the movable rod 11.

The sprinkler head according to the present embodiment comprises the above-described sprinkler head main body 27 and movable rod 11.
Is made by, it will be described for the case of use.

First, a sprinkler head is fixed to a predetermined position on a ceiling surface of a water distribution pipe (not shown) via a connection pipe (not shown), and then fire extinguishing water is circulated through the water distribution pipe. When the fire extinguishing water is filled in the head frame 1 with the fire extinguishing water, the movable rod 11 is pressed downward against the urging force of the elastic body 12 by receiving the water pressure as shown in FIG. The 11 pin 11b is exposed to the outside from the lower surface of the lock screw 23.

[0024] On the other hand, when the fire extinguishing water is not filled to the head frame 1, pin 11b of the movable rod 11 is not bare at all or enough outward.

In this manner, whether or not the fire extinguishing water is full can be easily confirmed by visually observing the exposed state of the pin 11b of the movable rod 11 from the outside. Moreover, such pins
11b is provided at the center of the sprinkler head main body 27,
And the lower end side circumferential surface of that for the fluorescent paint is formed by coating wear, it can be advantageously confirm the denuded state even at night or the like.

In this way, it is possible to find out in advance the poor connection of the pipes, etc., and if the fire extinguishing water is not full, the connection state of the pipes and the like should be checked again, and the confirmation should be made in the same manner. It is.

Further, since such a sprinkler head has an extremely simple structure, there is an advantage that the sprinkler head can be easily and inexpensively manufactured.

If a fire occurs and the temperature of the heat-sensitive plate 25 rises, the fusible member 26 melts or softens and the lower holding member 19 descends. 3 is released from the engagement with the inward convex portion 22.

The upper holding body 18, the screw body 9 and the plug 4 fall below the head frame 1 due to the resilience of the resilient body 14, and the fire extinguishing water flowing out of the opened outlet 5 is discharged. After colliding with the upper surface of the plug 4, the water is dispersed and sprayed radially on all sides.

In the above-described embodiment, the movable rod 11 is urged by the elastic body 12 so that the pin 11b is always fixed to the lock screw 23.
The pin 11b may be slightly exposed to the outside from the beginning, or may be immersed in the lock screw 23 from the beginning. In short, when the sprinkler head main body 27 is filled with a fluid such as fire extinguishing water or the like using the fire extinguishing water or the like, the movable rod 11 may be exposed to the outside and the presence or absence of the fire extinguishing water or the like may be visually confirmed.

Further, the sprinkler head to which the present invention can be applied is not limited to the one described in the above embodiment. For example, as shown in FIG. 28 may be attached to the through hole 8 of the plug 4 and a cover 30 having a through hole 29 may be screwed into the screw portion 7 of the through hole 8. Of course, the present invention can also be applied to a dry sprinkler head having a structure filled in 27.

Further, in the present embodiment, the fusible member 26 is formed in a ring shape, but the shape of the fusible member 26 is not limited to this, and the fusible member 26 is formed in a rod shape and the movable rod 11 May be provided with a hole through which the hole can be inserted.

In addition, the specific configuration such as the shape of the plug 4 and the movable rod 11 can be freely changed within the range intended by the present invention.

[0034]

As described above, according to the present invention, when the fire extinguishing water or the like is filled in the sprinkler head main body, the movable bar is configured to be exposed to the outside. Then, it is possible to easily check whether or not the fire extinguishing water or the like is filled in the sprinkler head main body by visually observing the bare state of the movable rod from below .

Accordingly, a special effect is obtained in that it is possible to find out in advance, for example, a poor connection of pipes, which is impossible with a conventional sprinkler head.

Further, since the head frame according to the present invention has a very simple structure, it has a practical effect that it can be manufactured easily and inexpensively.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a head frame showing one embodiment of the present invention.

FIG. 2 is a front sectional view showing an operation state.

FIG. 3 is a front sectional view showing another embodiment.

FIG. 4 is a front sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Head frame 4 ... Plug body 5 ... Outlet 8 ... Through-hole 11 ... Movable rod 12 ... Elastic body 27 ... Sprinkler head

Claims (4)

(57) [Claims] 1. A movable rod which is normally located in a sprinkler head main body (27), and is exposed outside the sprinkler head main body (27) when the sprinkler head main body (27) is filled with fire extinguishing water or the like. (11) A sprinkler head having a function of confirming a fullness of fluid, wherein the sprinkler head is provided at the center of the sprinkler head main body (27). 2. The outlet (5) of the head frame (1) is closed.
Through hole communicating with the outlet (5) in the plug (4)
(8) is drilled, and the through hole (8) is formed by an elastic body (12).
The sprinkler head is normally urged upward
The movable rod (11) located inside the body (27) is
The movable rod (11) is used to extinguish a fire on the head frame (1).
When filled with water, etc., it resists the urging force of the elastic body (12).
One end is naked to the outside from the sprinkler head body (27)
Fluid filling characterized in that
Sprinkler head with full confirmation function . 3. A fluorescent coating is applied to the outer peripheral surface of the lower end of said movable rod (11).
The filling of the fluid according to claim 1 or 2, wherein the fluid is coated.
Sprinkler head with recognition function . 4. The sprinkler head body (27) is normally positioned within the sprinkler head body (27), and when the sprinkler head body (27) is filled with fire extinguishing water or the like, the sprinkler head body (27) is
The sprinkler head body (27) is provided by visually observing a movable rod (11) provided at the center and exposed to the outside from below.
A method for confirming whether a sprinkler head is filled with a fire extinguishing water or the like.