JPH06142226A - Method of confirming fullness of fire-extinguishing water in sprinkler head, and sprinkler head - Google Patents

Abstract

PURPOSE:To actuate a sprinkler head surely in the case of fire or the like and find a piping connection defective or the like preliminarily by easily confirming whether or not fire-extinguishing water is filled in a sprinkler head properly. CONSTITUTION:After a sprinkler head 27 of which outflow port 5 is closed with a cap body 4 is connected to a water distribution pipe with a piping, fire-extinguishing water is supplied to the water distribution pipe, and a valve 11 for opening/closing a throughhole 8 formed communicating with the outflow port 5 of the sprinkler head main body 1 is released, thereby, whether fire- extinguishing water is filled in the sprinkler head main body 1 or not, is recognized by seeing if there is outflow of the fire extinguishing water from the throughhole or not.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler head capable of confirming whether or not water for extinguishing fire is filled in the sprinkler head.

[0002]

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

That is, as shown in FIG. 4, this conventional one is constructed such that the plug body 4 is pressed and held from the lower side to close the outflow port 5 of the sprinkler head main body 1. The main body 1 is attached to the ceiling surface of a room or the like so as to operate when a fire occurs or the like while the main body 1 is filled with fire extinguishing water.

[0004]

However, since the plug body 4 in the above-mentioned conventional one has only the function of closing the outflow port 5 of the sprinkler head body 1, the plug body 4 is actually installed in the sprinkler head body 1. There was a difficulty that it was not possible to confirm whether or not the fire extinguishing water was full.

Therefore, even if there is a connection failure in the pipe, it cannot be detected in advance, and there is a great problem that fire extinguishing work by the sprinkler head is hindered.

Therefore, the present invention has been made in order to solve the above-mentioned conventional problems, and makes it possible to easily confirm whether or not the fire extinguishing water is appropriately filled in the sprinkler head, and to connect the pipes. It is an object to detect defects in advance and to make sure that the sprinkler head can be activated in case of fire.

[0007]

That is, in order to solve the above-mentioned problems, according to the present invention, after connecting a sprinkler head 27 whose outlet 5 is closed by a plug 4 to a water distribution pipe,
A fire extinguishing water is circulated through the water distribution pipe, and then a valve 11 for opening and closing a through hole 8 formed in the plug body 4 in communication with the outlet 5 of the sprinkler head body 1 is opened to open the through hole 8. This is a method for confirming that the sprinkler head main body 1 is filled with fire extinguishing water by letting out the fire extinguishing water from the sprinkler head.

Further, the sprinkler head according to the present invention has a plug body 4 for closing an outlet 5 of the sprinkler head body 1, and a penetrating body 4 which communicates with the outlet 5 of the sprinkler head body 1. It is characterized by comprising a valve 11 for opening and closing the provided through hole 8.

[0009]

Therefore, in the fire extinguishing water filling confirmation method and the sprinkler head having the above-mentioned structure, when the valve 11 is opened, when the sprinkler head main body 1 is filled with the fire extinguishing water, the plug body 4 penetrates. While the fire extinguishing water flows out from the hole 8, if the fire extinguishing water is not full, the fire extinguishing water does not flow out. It is possible to easily confirm whether or not the fire extinguishing water is filled in the sprinkler head body 1 based on whether or not the fire extinguishing water has flowed out.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a sprinkler head body in which a fire extinguishing water inflow passage 2 is formed, and a substantially cylindrical frame 3 is provided under the peripheral edge of the sprinkler head body 1.
Is screwed on.

Reference numeral 4 denotes a plug body for closing an outlet 5 formed in the lower portion of the sprinkler head body 1. A flange portion 6 is formed on the peripheral edge of the lower end portion of the plug body 4, and a lower portion is formed substantially at the center. A through hole 8 having a threaded portion 7 is formed on the inner peripheral surface of the side, and the upper end of the through hole 8 is formed to have a smaller diameter than the lower end side.

Reference numeral 9 denotes a screw body screwed to the screw portion 7 of the plug body 4, and a through hole 10 having a hexagonal lower portion is formed at a substantially central portion of the screw body 9 through hole of the plug body 4. 8 is provided so as to communicate therewith. A seal (not shown) is provided between the screw body 9 and the screw portion 7 of the plug body 4.

Reference numeral 11 denotes a valve for closing the through hole 10 of the screw body 9, and a valve body having a small diameter lower end portion inserted into the through hole 10 and a large diameter valve seat portion 11a provided at the upper end portion. The valve body 11c is a valve made up of an elastic body made of a conical coil spring mounted above the valve seat portion 11a. The elastic body 12 normally presses the valve body 11c downward so that the valve seat portion 11a The taper surface formed in the through hole 10 of the screw body 9 is pressed to close the through hole 10.
11b is a pin protruding from the upper surface of the valve body 11a,
When the valve body 11c is pushed upward against the elastic force of the elastic body 12, the tip of the pin 11b is inserted into the upper end (small diameter portion) of the through hole 8 of the plug body 4. The size is set so as to slightly project from the upper surface of No. 4.

The valve seat 11b of the valve body 11c
Sealing means is applied to the bottom surface of the
The lower end of 11c and the outer diameter of the pin 11b have through holes 10 of the screw body 9.
The inner diameter is slightly smaller than the inner diameter of the.

Reference numeral 13 denotes an elastic body composed of a disc spring whose surface is coated with a fluororesin, and has a constant pressing force between the lower end of the outlet 5 of the sprinkler head body 1 and the upper surface of the collar 6 of the plug 4. In response to this, the elastic body 13 is interposed in a tensioned state, and the inner peripheral surface of the elastic body 13 is fitted in the notch 6a formed in the flange portion 6 of the plug body 4.

Reference numeral 14 is a bent deflector connected to the outer peripheral edge of the plug body 4, and a guide portion 15a slidable on the outer peripheral surface of the sprinkler head main body 1 is provided at the upper end thereof so as to project downward. The guide ring 15 is connected and functions as a guide when the plug body 4 falls.

Reference numeral 16 denotes an elastically deformable locking body which is formed in a partially notched ring shape and whose diameter expands and contracts.

Reference numerals 17 and 18 are a pair of holding bodies for holding and holding the locking body 16, and a hole 17a into which the lower end portion of the screw body 9 can be fitted is formed on the upper surface of the upper holding body 17. As well as
A screw portion 17c is formed on the inner peripheral surface of the tubular portion 17b, and the tubular portion 18a of the lower holding body 18 is slidably fitted onto the tubular portion 17b of the upper holding body 17. Has been done.

Numerals 19 and 20 are tapered surfaces formed on the outer peripheral edge portions of the holding bodies 17 and 18, respectively, and in order to hold the locking body 16 in an expanded state between them, the distance between them is inward. The locking body 16 is formed between the tapered surfaces 19 and 20 and the inner peripheral surface of the inwardly projecting portion 21 formed at the inner peripheral edge of the lower end portion of the sprinkler head body 1 so as to be narrower.

Reference numeral 22 denotes a lock screw screwed to the screw portion 17c of the upper holding body 17, and a through hole 22a is formed at the substantially center thereof. Reference numerals 23, 24 and 25 respectively denote a heat insulating packing, a heat sensitive body and a fusible body which are interposed between the collar portion 22b formed at the lower end of the lock screw 22 and the lower end of the lower holding body 18.

The present embodiment is constructed as described above, and the case of using it will be described below.

First, after fixing the sprinkler head 27 to a predetermined position on the ceiling surface through a connecting pipe (not shown) to a water distribution pipe (not shown), fire extinguishing water is circulated through the water distribution pipe.

Then, it is confirmed whether or not the fire extinguishing water is filled in the sprinkler head body 1.
In this case, as shown in FIG. 2, when a pressing rod 26 of an appropriate length is inserted from the through hole 22a of the lock screw 22 and the lower surface of the valve body 11c is pressed against the elastic force of the elastic body 12, the valve body 11c is pressed.
c moves upward and its valve seat portion 11a and screw body 9
The sealed state with is released.

Therefore, when the fire extinguishing water is filled in the sprinkler head body 1, the sprinkler head body 1 is discharged from the outflow port 5 through the through hole 8 of the plug body 4 and the through hole 10 of the screw body 9. A small amount of fire extinguishing water will flow out through the through hole 22a of the lock screw 22.

When the valve body 11c is pressed, the pin 11b of the valve body 11c projects from the through hole 8 of the plug body 4, so that foreign matter such as dust is accumulated on the upper portion of the through hole 8. It is also possible to remove this.

After that, when the pressing by the pressing rod 26 is released, the restoring force of the elastic body 12 returns the valve body 11c to the original position and the through hole 10 of the screw body 9 is closed, and the outflow of fire extinguishing water is stopped.

Then, as shown in FIG. 1, the through hole of the lock screw 22.
Glue the tested seal 29 to close 22a.

On the other hand, when the fire extinguishing water does not flow out, it means that the sprinkler head body 1 is not filled with the fire extinguishing water, and it is found that the connection state of the pipes is inadequate, and the pipes are inspected again After that, the same test is performed.

With such an extremely simple operation, it is possible to easily confirm whether or not the fire extinguishing water is filled in the sprinkler head body 1.

Although the series of confirmation work is usually performed immediately after the piping of the sprinkler head 27 is installed, it is of course possible to confirm it periodically.

Further, since the sprinkler head 27 has a simple structure, there is an advantage that the sprinkler head 27 can be manufactured inexpensively and easily.

When a fire occurs and the temperature of the heat sensitive plate 24 rises, the fusible body 22 is melted or softened and the lower holding body 18 descends, so that the locking body 16 contracts and the frame 16 contracts. The engagement state of 3 with the inward convex portion 16 is released.

The elastic force of the elastic body 13 causes the upper sandwiching body 17, the screw body 9 and the plug body 4 to fall below the sprinkler head body 1 and extinguish the fire flowing out from the open outlet port 5. After colliding with the upper surface of the stopper 4, the water is dispersed in all directions and sprinkled radially.

The structure of the valve 11 according to the present invention is by no means limited to that of the above-mentioned embodiment, and any structure may be used as long as it can open and close the through hole 8 provided in the plug body 4. As in the embodiment, the valve 11 is composed of a valve body 11 and an elastic body.
In the case of configuring with 12, the one end of the rod-shaped pressing body 28 is integrally fixed to the lower surface of the valve body 11c as shown in FIG. 3, and the other end is externally provided through the through hole 22a of the lock screw 22. It may be configured to project.

It is also possible to omit the screw body 9 and open and close the through hole 8 of the plug body 4 by the valve body 11c. In this case, the valve body 11c and the elastic body 12 are mounted from above the plug body 4. It should be configured so that it can.

Further, the means for pressing the valve body 11c to close the through hole 10 of the screw body 8 by the valve body 11c may be the elastic body 12, and is not limited to the conical coil spring of the above embodiment. Absent.

Further, the sprinkler head 27 to which the present invention is applicable is not limited to the one in the above embodiment, either.
The specific configuration does not matter.

In addition, all the specific configurations such as the shape of the plug 4 can be arbitrarily changed in design within the scope intended by the present invention.

[0040]

As described above, according to the present invention, since the valve is provided in the plug for closing the outlet of the sprinkler head body, the sprinkler head is plugged by appropriately opening the valve after the piping is installed. The presence or absence of outflow of fire extinguishing water from the through hole of the body has made it possible to easily confirm whether or not the fire extinguishing water is filled in the sprinkler head body.

Therefore, it is possible to detect in advance a defective connection of the pipe, which is impossible with the conventional sprinkler head, and to reliably operate the sprinkler head when a fire occurs.

Further, since the sprinkler head according to the present invention has a very simple structure, it has a practical effect that it can be easily manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a front sectional view of a sprinkler head showing an embodiment of the present invention.

FIG. 2 is a front sectional view showing a usage 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]

 1 ... Sprinkler head body 4 ... Plug body 5 ... Outflow port 9 ... Screw body 8 ... Through hole 10 ... Through hole 11 ... Valve 11b ... Pin 11c ... Valve body 12 ... Elastic body 27 ... Sprinkler head 28 ... Pressing body

[Procedure amendment]

[Submission date] February 25, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction content]

The present invention relates to improvements in sprinkler heads.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

[0007]

[Means for Solving the Problems] That is, in order to solve the above-mentioned problems, according to the present invention, after connecting a sprinkler head 27 whose outlet 5 is closed by a plug 4 to a water distribution pipe, the water distribution pipe is connected. The fire extinguishing water from the through hole 8 is opened by opening a valve 11 for opening and closing a through hole 8 formed in the plug body 4 in communication with the outlet 5 of the sprinkler head body 1. Is a method for confirming whether the sprinkler head main body 1 is filled with fire extinguishing water or not.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

Reference numeral 4 denotes a plug body for closing a flow port 5 formed in a lower portion of the sprinkler head body 1.
A flange portion 6 is formed on the peripheral edge of the lower end portion of the, and a through hole 8 having a screw portion 7 formed on the lower peripheral surface is bored at a substantially central portion, and the upper end of the through hole 8 is on the lower end side. A plurality of holes 4a having a smaller diameter and communicating with the through hole 8 are formed at a position above the collar portion 6.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

Reference numeral 11 denotes a small-diameter lower end portion of the through hole 10 of the screw body 9.
Shows a valve constituted by a valve body 11c that is inserted into the upper end of the valve body 11c having a large-diameter valve seat portion 11a and an elastic body 12 formed of a conical coil spring mounted above the valve seat portion 11a. The valve body 11c is pressed downward by the elastic body 12, and the valve seat 11a
And the stepped portion formed in the through hole 10 of the screw body 9 are pressed against each other through the O-ring 29 to close the through hole 10. Reference numeral 11b denotes a pin projectingly provided on the upper surface of the valve body 11a, which is inserted into the upper end (small diameter portion) of the through hole 8 of the plug body 4 so that the valve body 11c resists the elastic force of the elastic body 12. The size of the tip of the pin 11b is set so as to slightly project from the upper surface of the plug 4 when pressed upward.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Change

[Correction content]

Further, in the above embodiment, the so-called wet type sprinkler head is configured to check whether or not the fire extinguishing water is filled, but the present invention can be applied to a so-called dry type sprinkler head. The fire extinguishing water that has inadvertently entered the sprinkler head can be discharged to the outside by opening the valve. In addition, all the specific configurations such as the shape of the plug body 4 can be arbitrarily changed in design within the scope intended by the present invention.

[Procedure Amendment 7]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure Amendment 8]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

[Procedure Amendment 9]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (8)

[Claims] 1. A sprinkler head 27, whose outlet 5 is closed by a plug 4, is connected to a pipe for water distribution, and then water for fire extinguishing is circulated through the pipe for water distribution, and then the sprinkler head body 1 is attached to the plug 4. The valve 11 for opening and closing the through hole 8 formed in communication with the outflow port 5 is opened, and the sprinkler head body 1 is filled with the fire extinguishing water depending on whether or not the fire extinguishing water flows out from the through hole 8. A method for checking the water filling of a sprinkler head for extinguishing water, which is characterized by confirming whether or not it is. 2. The outlet 5 of the sprinkler head body 1.
And a valve 11 for opening and closing a through hole 8 formed in the plug body 4 in communication with the outlet 5 of the sprinkler head body 1. Sprinkler head. 3. The valve 11 includes a valve body 11c mounted in the through hole 8 of the stopper 4, and an elastic body 12 for closing the through hole 8 by pressing the valve body 11c downward.
The sprinkler head according to claim 2, comprising: 4. The outlet 5 of the sprinkler head body 1.
4 for closing the plug, a screw body 9 screwed to the lower end of a through hole 8 formed in the plug body 4 so as to communicate with the outlet 5, and a plug body for the screw body 9. 4. A sprinkler head, which comprises a valve 11 for opening and closing a through hole 10 that is formed in communication with the through hole 8 of FIG. 5. The valve 11 includes a valve body 11c mounted in a through hole 10 of a screw body 9, and an elastic body 12 for closing the through hole 10 by pressing the valve body 11c downward. The sprinkler head according to claim 4, comprising: 6. The pin 11b projectingly provided on the upper surface of the valve body 11c is inserted into an upper end portion of the plug 4 having a smaller diameter than the lower end side of the through hole 8. Sprinkler head. 7. When the valve body 11c is pressed against the elastic force of the elastic body 12, the tip portion of the pin 11b has a stopper 4a.
7. It is configured so as to project from the through hole 8 of
Sprinkler head as described. 8. The pressing body 28 for pressing the valve body 11c against the elastic force of the elastic body 12 is projectingly provided at the lower end of the valve body 11c. 7. The sprinkler head according to 7.