JP7158638B2 - Pipe fittings for fire extinguishing equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a pipe joint connection structure for fire extinguishing equipment.

Sprinkler equipment is installed in buildings, shopping centers, etc., and consists of a water tank that stores water to extinguish a fire, a sprinkler head that sprays water, fire extinguishing equipment piping that connects the water tank and the sprinkler head, and water in the water tank. It consists of equipment such as a pump for sending water to the sprinkler head. The inside of the fire extinguishing equipment piping is filled with pressurized water.

The sprinkler head is mainly installed on the ceiling surface or in a high position such as directly under the roof in a building without a ceiling such as a warehouse. Therefore, the fire extinguishing equipment piping that sends water from the water tank to the sprinkler head is installed at a high position in the room. Work to connect. Therefore, the construction of fire extinguishing equipment pipes was done at a high place where the feet were unstable, and the burden on the workers was heavy.

The fire extinguishing equipment pipe is branched from the main pipe leading to the water tank by a multi-port joint and connected to the sprinkler head via a flexible pipe such as a metal flexible pipe or a resin pipe. 16A to 25A is mainly used for the connecting part of the flexible tube and the multi-port joint, and the connecting structure is a taper screw structure for pipes. By screwing them together, the seal tape bites into the threads to provide a good seal.

However, if an inexperienced person performs the above work, a leak may occur due to poor workmanship. The leaked parts had to be redone, which was a factor in lowering the work efficiency. Moreover, in the above work, it was necessary to use a special tool to apply a predetermined torque for screwing. More specifically, metal wrenches and spanners are used as special tools, and the work of connecting a flexible tube to a multi-port joint installed overhead using these heavy metal tools is The burden on workers was heavy.

In recent years, it is possible to improve work efficiency and reduce the burden on workers by using quick joints that do not use screws (see, for example, Patent Document 1). However, if the above joint is used and the pipe is detached from the joint due to poor connection, a large amount of water may be discharged into the room, causing water damage. Therefore, there is also a view that the use of the above-mentioned screw connection structure reduces the risk of water damage due to poor construction.

JP 2015-175494 A

Therefore, in view of the above problems, an object of the present invention is to provide a fire extinguisher pipe joint that can reduce the work load on the worker and shorten the work time in the construction work of the fire extinguisher pipe.

In order to achieve the above objects, the present invention provides the following pipe joint for fire extinguishing equipment.
That is, the main body has a bottomed cylindrical shape, the opening of which is connected to the supply pipe, the connection port installed on the side of the main body, the branch pipe attached to and detached from the connection port, and the exterior of the main body except for the opening. , a bracket provided with a missing portion corresponding to the connection port, and when the tip of the branch pipe is inserted into the connection port, the flange installed on the side of the branch pipe is sandwiched between the main body and the bracket. It is a pipe joint for fire extinguishing equipment.

In the present invention, in a pipe joint main body having a plurality of connection ports, a branch pipe is sandwiched and supported by the main body and the bracket, and the bracket is fixedly installed on the main body. In addition, conventionally, the branch pipes are connected by screws for each connection port, but a bracket is used to collectively fix and connect a plurality of branch pipes to the main body. As a result, a plurality of branch pipes can be fixed with one bracket, so work efficiency can be improved.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, it is possible to realize a fire extinguishing equipment pipe joint that can reduce the work load on the worker and shorten the work time in the construction work of the fire extinguishing equipment pipe.

The state figure of piping to which the pipe joint for fire extinguishing equipment of 1st Embodiment was connected. FIG. 2 is a cross-sectional view of the pipe joint of FIG. 1; FIG. 3 is an exploded view (partial cross section) of the pipe joint in FIG. 2 ; FIG. 3 is a plan view of the pipe joint of FIG. 2; A modification of the pipe joint of FIG.

Embodiments of the present invention will be described with reference to FIGS. 1 to 5. FIG. FIG. 1 shows a state in which a pipe joint T1 for fire extinguishing equipment of the present invention (hereinafter referred to as joint T1) is connected to a pipe for fire extinguishing equipment. The joint T1 has an upper end connected to the supply pipe P, and has a peripheral surface connected to a plurality of flexible tubes F (branch pipes 3). A sprinkler head S is connected to the distal end of the flexible tube F, and the sprinkler head S is installed so that the lower end thereof is exposed from the ceiling board C to the inside of the room.

The joint T1 has a body 1 and a bracket 2. As shown in FIG. The main body 1 has a cylindrical shape with a bottom and has an opening 11 at the upper end. A female screw 12 is formed on the inner peripheral surface of the opening 11 for connection with the supply pipe P. As shown in FIG. A plurality of connection ports 13 to which the branch pipes 3 are connected are installed on the side surface. In this embodiment, four connection ports 13 are provided.

The inner peripheral surface of the connection port 13 is a sealing surface with which a sealing member 32 installed on the branch pipe 3 contacts. An end surface 14 of the connection port 13 is formed flat, and the end surface 14 is a contact surface with a flange portion 33 of the branch pipe 3, which will be described later.

A female screw 15 is formed on the bottom surface of the main body 1 facing the opening 11 . A bolt 16 for fixing the bracket 2 to the main body 1 is screwed into the female screw 15 .

The bracket 2 has a box shape and accommodates the main body 1 inside. As shown in FIG. 3, the upper surface of the bracket 2 is an opening through which the main body 1 can be accommodated inside the bracket 2. As shown in FIG. The bottom surface of the bracket 2 has a hole 21 through which the bolt 16 is inserted.

As shown in FIG. 4, the side surface of the bracket 2 has four flat surfaces 22 facing the end surface 14 described above. Each plane 22 is formed with a U-shaped recess 23 for avoiding interference with the branch pipe 3 . The ends of the cutouts 23 are widened outward to form ribs 24 . The inner side of the cutout portion 23 serves as a contact surface with the collar portion 33 of the branch pipe 3 .

The branch tube 3 has a flexible tube F and a tubular connector 31 installed at one end thereof. The flexible tube F is composed of a metal flexible pipe or a resin pipe, and has a connector 31 installed at one end connected to the connection port 13 and a sprinkler head S connected to the other end. The connector 31 is joined by welding or caulking when the flexible tube F is a metal flexible pipe, and is joined by fusion or the like when the flexible tube F is a resin pipe.

A seal member 32 is installed on the outer peripheral surface of the connector 31 . The seal member 32 is an annular waterproof member such as an O-ring, and contacts the inner peripheral surface of the connection port 13 of the main body 1 to prevent the fluid inside the joint T1 from leaking. The seal member 32 is installed on the distal end side of the connector 31 , and a flange portion 33 is formed adjacent to the seal member 32 .

The outer diameter of the collar portion 33 is larger than the width W of the cutout portion 23 . As described above, the flange portion 33 is arranged such that one plane faces the end face 14 of the connection port 13 and the other plane faces the plane 22 of the bracket 2 . In the state where the branch pipe 3 is connected to the connection port 13 as shown in FIG.

In the connector 31, a straight tube portion 34 is provided between the collar portion 33 and the flexible tube F. As shown in FIG. The outer diameter of the straight tube portion 34 is slightly smaller than the width W of the cutout portion 23 . The length dimension of the straight tube portion 34 is the same as or longer than the thickness dimension of the rib 24 of the cutout portion 23 .

Next, a procedure for connecting the branch pipe 3 to the joint T1 of the present invention will be described.

First, the opening 11 of the main body 1 is screwed and connected to the supply pipe P installed in the upper part of the indoor space. Then, the connector 31 of the branch pipe 3 is inserted into the connection port 13 of the main body 1 . At this time, the connector 31 is pushed in until the flange portion 33 comes into contact with the end surface 14 of the connection port 13 .

After connecting the connectors 31 to all the openings 13, the bracket 2 is attached to the main body 1. - 特許庁The main body 1 is accommodated inside the bracket 2 from the bottom side. At this time, the position of the branch pipe 3 and the position of the missing portion 23 are made to correspond to each other and are inserted. The straight pipe portion 34 of the connector 31 is accommodated in the inner circumference of the cutout portion 23 , and the collar portion 33 is arranged in contact with or close to the flat surface 22 near the cutout portion 23 . In this state, the flange portion 33 is sandwiched between the end surface 14 and the flat surface 22 .

Subsequently, the bolt 16 is fastened to the female screw 15 of the main body 1. The bracket 2 is fixedly installed on the main body 1 by bolts 15 . This completes the connection work. It should be noted that the procedure for removal can be carried out by reversing the procedure described above.

Embodiments of the present invention are not limited to the above, and for example, the connection structure with the supply pipe P may be changed from the screw structure to the housing joint H (see FIG. 5). By using the housing joint H, labor for connecting the main body 1 and the supply pipe P can be reduced. When the flexible tubes F are not connected to all of the connection ports 13, for example, when the flexible tubes F are connected to three locations and one location is not used, an internal hole is formed in the locations where the flexible tubes F are not connected. It can be configured by connecting the closed connector 31 .

1 body
2 Bracket
3 branch pipe
11 opening
13 connection port
14 end face
16 volts
21 holes
22 plane
23 missing part
24 ribs
31 connector
33 collar
F Flexible tube
H housing joint
P supply pipe
S sprinkler head
T1 joint

Claims (5)

a main body having a cylindrical shape with a bottom and an opening connected to a supply pipe;
A connection port installed on the side of the main unit,
a branch pipe to be attached/detached to/from the connection port;
It consists of a bracket that covers the outside of the main body except for the opening and has a missing part corresponding to the connection port,
1. A pipe joint for a fire extinguishing system, characterized in that, when the tip of the branch pipe is inserted through the connection port, a flange provided on the side surface of the branch pipe is held between the main body and the bracket. 2. The pipe joint for fire extinguishing equipment according to claim 1, wherein the bracket is fixed to the main body by a screw structure. 3. A pipe joint for fire extinguishing equipment according to claim 1 or 2, wherein a female screw is provided on the bottom surface of the main body, and a bolt inserted through the bracket is screwed into the female screw. The pipe joint for fire extinguishing equipment according to any one of claims 1 to 3, wherein a rib is installed in the missing portion of the bracket. The pipe joint for fire extinguishing equipment according to any one of claims 1 to 4, wherein the opening of the main body is connected to the supply pipe by a housing joint.

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