JP2019072163A - Sprinkler head attachment and sprinkler head - Google Patents

Abstract

To provide a sprinkler head attachment capable of preventing entry of corrosive gas into a ceiling and a back side of a wall, and sprinkler head.SOLUTION: A sprinkler head attachment includes a ring-shaped gasket used for a sprinkler head 10 to be connected to a water supply pipe 30 installed on the ceiling and a back side of a wall, and clamped between the sprinkler head 10 and a ceiling surface or wall surface. (1) The sprinkler head attachment includes a gasket 20 whose inner periphery is inserted into the sprinkler head, and whose outer periphery includes an inclined part 23 that is bent to the ceiling surface or the wall surface. (2) The sprinkler head attachment includes a peripheral wall part 63 extending from a position spaced from an outer edge 62 of a gasket 60 to an inner edge 61 side, in a direction of a water supply pipe 30.SELECTED DRAWING: Figure 1

Description

The present invention relates to an accessory and a sprinkler head installed on a sprinkler head for fire extinguishing.

The fire extinguisher sprinkler head sprays water in the event of a fire to extinguish the fire, and is installed on a ceiling surface or a wall surface at a predetermined interval. The sprinkler head is connected to the ceiling and wall piping. The piping is connected to a water source, and in the event of a fire, water is continuously supplied from the water source to the sprinkler head by a pump.

Sprinkler heads will be installed in buildings, communal homes and shopping centers that are required to be installed under the Fire Service Law. Moreover, it may be installed in an indoor pool or a hot spring hotel, and the sprinkler head or piping may be corroded by the corrosive gas contained in the chlorine atmosphere of the indoor pool or the hot spring component of the hot spring hotel.

Therefore, although there is a sprinkler head or piping that prevents corrosion by applying a stainless steel material or corrosion resistant plating to the sprinkler head or piping (see, for example, Patent Documents 1 and 2), it is difficult to completely prevent corrosion. Check the corrosion condition regularly and replace the equipment according to the corrosion condition.

However, it is difficult to easily visually inspect the pipes installed on the ceiling and the back of the wall. For this reason, there is a case where a liquid gasket is used to close the gap between the ceiling surface and the sprinkler head so that corrosive gas does not reach the back of the ceiling or the back of the wall.

However, if the amount of the liquid gasket is too large, it may sag and adhere to the surface of the sprinkler head before it solidifies. If the dripped liquid gasket solidifies, the sprinkler head may interfere with the movement of the heat-sensitive decomposition portion which is disassembled in the event of a fire, or the spray hole may be blocked to prevent uniform water spray. Conversely, if the amount of the liquid gasket is insufficient or not uniformly applied, sufficient confidentiality may not be obtained.

JP 2003-269661A JP-A-11-229162

Therefore, in the present invention, it is an object of the present invention to provide a sprinkler head accessory and a sprinkler head which can be easily installed and can prevent the entry of corrosive gas into the ceiling back and the wall in view of the above problems.

In order to achieve the above objective, the present invention provides the following sprinkler head accessories.
That is, it is a ring-shaped gasket which is used for a sprinkler head connected to a water supply pipe installed on the ceiling or wall and is sandwiched between the sprinkler head and the ceiling surface or wall surface, and the inner periphery of the gasket is a sprinkler It can be configured as a sprinkler head accessory that has an inclined portion that is inserted into the head and that is bent toward the ceiling surface or wall surface on the outer peripheral side of the gasket.

The sprinkler head attachment described above is a ring shaped gasket that is sandwiched between the sprinkler head and the ceiling or wall surface. The inner periphery of the gasket is inserted through the threaded portion of the sprinkler head connected to the water supply pipe. The outer peripheral side of the gasket is provided with an inclined portion which is bent to the ceiling surface or wall surface, and when the screw portion of the sprinkler head is screwed into the water supply pipe, the inclination of the gasket installed between the sprinkler head and the ceiling surface or wall surface Department is crushed. At that time, the outer edge is in close contact with the ceiling surface and the wall surface, and high airtightness can be obtained.

Further, the present invention is a ring-shaped gasket which is used for a sprinkler head connected to a water supply pipe installed on the back of the ceiling or the back of a wall, and is sandwiched between the sprinkler head and the ceiling surface or wall surface. It can be configured as a sprinkler head accessory having a peripheral wall extending in the direction of the water supply pipe from a position spaced apart from the inner edge side.

The sprinkler head accessory of the above configuration has a peripheral wall portion extending in the direction of the water supply pipe from a position separated from the outer edge of the gasket to the inner edge side, and the peripheral portion is a sprinkler head pierced in the ceiling or wall. It is inserted and installed inside the hole. When the threaded portion of the sprinkler head is screwed into the water supply pipe, the outer edge of the gasket installed between the sprinkler head and the ceiling surface or wall surface is crushed. At this time, if there are design irregularities on the ceiling surface or wall surface, sufficient air tightness may not be obtained, but the outer circumferential surface of the peripheral wall contacts the inner circumferential surface of the hole, so high air tightness can be obtained. . Further, if the length of the peripheral wall portion is longer than the thickness of the ceiling plate or the wall plate, the airtightness is further enhanced.

The gasket can be placed on a plane intersecting the nozzle axis of the sprinkler head. In addition, this flat surface is comprised in the main body which has a nozzle. Alternatively, the gasket may be placed on a plane provided on a sealing plate mounted on the outer periphery of the sprinkler head.

The present invention is also a sprinkler head provided with the above-described sprinkler head accessory, wherein the sprinkler head is provided with a recess larger in diameter than the outer diameter of the gasket on the flat surface where the sprinkler head is installed. As a result, the gasket installed between the ceiling surface or wall surface and the sprinkler head can be made inconspicuous, and the design is improved.

As described above, according to the present invention, by using a gasket between the sprinkler head and the ceiling surface or wall surface, it is possible to prevent the penetration of corrosive gas into the ceiling. In addition, a sprinkler head provided with the gasket can be realized.

The state diagram before installation of the sprinkler head accessory of 1st Embodiment. The state diagram after the installation in FIG. The figure (partial cross section) which shows the modification of FIG. The state diagram before installation of the sprinkler head accessory of 2nd Embodiment. The state diagram after the installation in FIG.

First embodiment (FIGS. 1 to 3)
The first embodiment of the present invention shown in FIG. 1 has a sprinkler head 10, a gasket 20, a water supply pipe 30, and a ceiling plate 40.

The sprinkler head 10 is a multi-type sprinkler head and is provided with a screw portion 11 connected to the water supply pipe 30 at the upper end side, and the lower side of the screw portion 11 is exposed to the indoor side (see FIG. 2). The screw portion 11 is provided on the main body 12, and the inside of the screw portion 11 is a nozzle 13. A bowl-shaped deflector 14 is installed at the outlet side (lower side) of the nozzle 13. A plurality of water spray holes 15 are formed on the side surface of the deflector 14, and the water supplied from the water supply pipe 13 passes through the nozzles 13 and is scattered from the water spray holes 15 of the deflector 14 in four directions.

At all times, the nozzle 13 is closed by a valve (not shown), and the valve is supported by a thermal decomposition unit (not shown). The structures of the valve and the thermosensitive decomposing unit are known (for example, JP-A-3-24154, JP-A-7-284545, etc.), and the description thereof is omitted here.

The gasket 20 has a ring shape. The gasket 20 is made of an elastic metal, resin or rubber. Especially when corrosion resistance is required, it is preferable to use silicone rubber. The inner edge 21 of the gasket 20 is inserted into the threaded portion 11 of the sprinkler head 10 and mounted on a flat surface 12 a intersecting the nozzle axis A formed on the main body 12. The outer peripheral side of the gasket 20 is provided with an inclined portion 23 bent toward the ceiling plate 40 side, and the outer edge 22 is separated to the water supply piping 30 side with respect to the plane near the inner edge 21 in the state before installation in FIG. There is. As a result, as shown in FIG. 2, when the screw portion 11 is screwed into the water supply pipe 30, the inclined portion 23 is deformed by elasticity and the outer edge 22 presses the ceiling plate 40 to enhance the confidentiality.

Alternatively, as shown in FIG. 3, the flat surface 12 a of the sprinkler head 10 can be configured by installing a recess 12 b having an inner diameter larger than the outer diameter of the gasket 20. When the gasket 20 is accommodated inside the recessed portion 12b and the screw portion 11 is screwed with the water supply pipe 30, the gasket 20 is disposed between the ceiling plate 40 and the recessed portion 12b, the gasket 20 becomes inconspicuous, and the designability is improved. .

The water supply pipe 30 is installed on the back side (ceiling back) of the ceiling plate 40 and has a screw portion (not shown) that can be screwed with the screw portion 11 of the sprinkler head 10 at the end. The ceiling plate 40 is provided with a hole 41 through which the screw portion 11 of the sprinkler head 10 can pass. A gasket 20 is sandwiched between the indoor surface of the ceiling plate 40 and the flat surface 12 of the sprinkler head 10.

Next, the installation of the gasket 20 and the procedure for connecting the sprinkler head 10 to the water supply pipe 30 will be described.

The water supply pipe 30 is disposed on the ceiling, and the end of the water supply pipe 30 is disposed at the back of the hole 41 of the ceiling plate 40. First, the gasket 20 is inserted into the screw portion 11 of the sprinkler head 10 so that the inner edge 21 is placed on the main body 12. Next, the sprinkler head 10 is connected to the water supply pipe 30 using a tool such as a wrench. As the screw portion 11 is screwed into the water supply pipe 30, the outer edge 22 of the gasket 20 contacts the ceiling plate 40. Further, when the screw portion 11 is tightened, the gasket 20 is elastically deformed and the outer edge 22 presses the ceiling plate 40 to increase the confidentiality. When the surface of the main body 12 on which the gasket 20 is mounted reaches a position where it comes close to the ceiling plate 40, the wrench is removed and the operation is completed.

Second embodiment (FIGS. 4 to 5)
In the second embodiment, a gasket 60 suitable for the case where the ceiling plate 40 has a designed unevenness is described. The sprinkler head 50 uses an embedded sprinkler head. The same parts as those in the first embodiment are indicated by the same reference numerals and the detailed description is omitted.

Only the lower end side of the sprinkler head 50 is projected from the hole 41 of the ceiling plate 40 to the indoor side. The internal structure of the sprinkler head 50 is known and is described in the above-mentioned Japanese Patent Application Laid-Open No. 7-284545 and the like, so the detailed description thereof is omitted here.

In FIG. 4, a sealing plate 51 is installed on the sprinkler head 50 to hide the holes 41 from the indoor side. The sealing plate 51 is engaged with a spiral groove 52 formed on the outer periphery of the sprinkler head 50. The sealing plate 51 includes a cylindrical portion 53 and a plate portion 54. Inside the cylindrical portion 53, a plurality of protrusions 55 engageable with the spiral groove 52 are provided. When the sealing plate 51 is inserted and rotated from the lower side of the sprinkler head 50, the protrusions 55 can move along the spiral groove 52 to adjust the position of the plate portion 54.

The plate portion 54 is disposed at the lower end of the cylindrical portion 53, and the outer diameter of the plate portion 54 is larger than that of the hole 41. A recess 12 b in which the gasket 60 is accommodated is provided on the surface of the plate portion 54 on the cylinder portion 53 side.

The gasket 60 has a ring shape and is made of an elastic material as in the first embodiment. The inner edge 61 of the gasket 60 is inserted into the cylindrical portion 53 and placed in the recess 12 b. At a position separated from the outer edge 62 of the gasket 60, a peripheral wall portion 63 extending in the direction of the water supply pipe 30 is installed. The peripheral wall portion 63 is installed along the cylindrical portion 53, and the peripheral wall portion 63 and the cylindrical portion 53 are separated. The outer peripheral diameter of the peripheral wall portion 63 is equal to or slightly larger than the inner diameter of the hole 41, and when the peripheral wall portion 63 is inserted into the hole 41, a gap is generated between the peripheral wall portion 63 and the hole 41 It is configured not to. Thereby, the hole 41 can be sealed to ensure air tightness.

The ceiling plate 40 has a design slit 42 formed in the surface on the indoor side. Therefore, there is a possibility that sufficient airtightness can not be obtained in the gasket 20 of the first embodiment, so in the gasket 60 of the second embodiment, the inner periphery of the hole 41 and the outer periphery of the peripheral wall 63 are brought into contact by the peripheral wall 63 The air tightness is enhanced.

Subsequently, the installation of the gasket 60 of the second embodiment and the procedure for connecting the sprinkler head 50 to the water supply pipe 30 will be described.

The sprinkler head 50 is an embedded sprinkler head and is in a state of being connected to the water supply pipe 30 before the ceiling plate 40 is installed. At this time, the sealing plate 51 is not attached to the sprinkler head 60 yet. Next, a ceiling plate 40 is installed, and a hole 41 is previously formed in the ceiling plate 40, and the lower end of the sprinkler head 50 is inserted into the hole 41 and exposed to the indoor side.

After installing the ceiling plate 40, the sealing plate 51 is engaged with the sprinkler head 50. At this time, the gasket 60 is placed in the recess 12 a as in the first embodiment. The sealing plate 51 is inserted into the lower side of the sprinkler head 50 and rotated, and the protrusions 55 are moved along the spiral groove 52 to engage the sprinkler head 50 with the sealing plate 51.

When the sealing plate 51 is further rotated, the peripheral wall portion 63 is inserted into the hole 41. Further, the outer edge 62 of the gasket 60 is sandwiched between the ceiling plate 40 and the plate portion 54 and is in a squeezed state. The sealing plate 51 is further rotated, and when the plate portion 54 reaches a position close to the ceiling plate 40, the operation is completed.

In the above, the gasket 60 is installed in the hole 41 of the ceiling plate 40 in a state of being placed in the recess 12 a as in the first embodiment, but at a stage before engaging the sealing plate 51 with the sprinkler head 50 The peripheral wall portion 63 can also be inserted into the hole 41. At that time, as shown by a dotted line in FIG. 5, if the rib 63 a is installed on the outer periphery of the tip of the peripheral wall 63, the gasket 60 can be prevented from falling off the hole 41.

As mentioned above, although embodiment of this invention was described, it is not limited to this, It is also possible to apply the gasket 20 of 1st Embodiment to the sprinkler head 50, The gasket 60 of 2nd Embodiment The sprinkler head 10 is also applicable.

In the gasket 60 of the second embodiment, the peripheral wall portion 63 is disposed between the inner edge 61 and the outer edge 62. However, the inner peripheral diameter of the peripheral wall portion 63 may be the same as the inner diameter of the inner edge 61.

DESCRIPTION OF SYMBOLS 10, 50 Sprinkler head 11 Screw part 12 Main body 13 nozzle 14 Deflector 15 Water spout hole 20, 60 Gasket 21, 61 Inner edge 22, 62 Outer edge 23 Slope part 30 Water supply piping 40 Ceiling plate 41 Hole 42 Slit 51 Ceiling plate 63

Claims (7)

A ring-shaped gasket that is used for sprinkler heads connected to water supply pipes installed on the ceiling and wall behind and is sandwiched between the sprinkler head and the ceiling surface or wall surface, and the inner circumference of the gasket is the sprinkler head A sprinkler head accessory characterized in that it is inserted and has an inclined portion which is bent toward the ceiling surface or the wall surface on the outer peripheral side of the gasket. A ring-shaped gasket used for sprinkler heads connected to water supply pipes installed on the ceiling and wall behind, and sandwiched between the sprinkler head and the ceiling surface or wall surface, separated from the outer edge of the gasket to the inner edge side A sprinkler head accessory characterized by having a peripheral wall portion extending in the direction of a water supply pipe from a position as described above. The sprinkler head accessory according to claim 1 or 2, wherein the gasket is disposed on a plane intersecting the nozzle axis of the sprinkler head, and the plane is provided on the main body having the nozzle. The sprinkler head accessory according to claim 1 or 2, wherein the gasket is installed on a flat surface provided on a sealing plate attached to the outer periphery of the sprinkler head. The sprinkler head accessory according to any one of claims 2 to 4, wherein a peripheral wall portion of the gasket is inserted into a hole through which a sprinkler head drilled on a ceiling or a wall is inserted. The sprinkler head accessory according to any one of claims 2 to 5, wherein the length of the peripheral wall portion is longer than the thickness of the ceiling plate or the wall plate. A sprinkler head provided with the sprinkler head accessory according to any one of claims 3 to 6, characterized in that a recess having a diameter larger than the outer diameter of the gasket is installed in the plane on which the sprinkler head is installed. Sprinkler head.

Images