JP2604250Y2 - Fire pipe connection equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for connecting a refractory pipe whose outer peripheral surface is covered with a noncombustible material such as mortar or steel pipe to a synthetic resin pipe joint.

[0002]

2. Description of the Related Art Conventionally, in high-rise houses such as apartments and condominiums, fire-resistant pipes 1a and 1b in which the outer peripheral surface of a synthetic resin pipe 11 is covered with a non-combustible material 12 such as mortar or asbestos as shown in a sectional view in FIG. Used as plumbing material for water supply and drainage pipes. When connecting the refractory pipes 1a and 1b, the end of the synthetic resin pipe 11 is exposed from the end of one of the refractory pipes 1a.
One end was fitted and connected to the receptacle 110 of the other refractory pipe 1b.

[0003]

However, in the case of this connection, the incombustible material 12 of one refractory pipe 1a is
A gap H is formed between the end face of the receiving port 110 of the other refractory pipe 1b, and there is a risk that the inner synthetic resin pipe 11 may be melted and burned out from the gap H in the event of a fire or the like. In particular, when one refractory pipe 1a and the other refractory pipe 1b are elastically connected via a rubber packing C, the gap H tends to be widened. 11 was melted and burned, and the burnt pipe passage became a chimney, causing a fire on the upper floor.

The present invention has solved the above-mentioned problem, and is intended to prevent a secondary fire from occurring by preventing the inner synthetic resin pipe from melting and burning in the event of a fire. An apparatus is provided.

In the present invention, the outer peripheral surface of the synthetic resin tube is made of mortar,
A connection device between a refractory pipe covered with a non-combustible material such as a steel pipe and a pipe joint made of synthetic resin covered with a non-combustible material such as a mortar and a steel pipe except for a receiving port provided at one end,
One end of a steel plate in which the end of the synthetic resin pipe exposed from the end of the refractory pipe is inserted into the socket of the pipe joint, and the end of the non-combustible material covering the outer peripheral surface of the pipe joint is wound in a cylindrical shape. The portion is fixed and covered by the steel plate from the outer peripheral surface of the receiving port to the outer peripheral surface of the non-combustible material of the refractory pipe.

[0006]

With the above construction, the gap between the receiving end face of the pipe joint and the incombustible material of the refractory pipe is covered with a steel plate, so that the inner synthetic resin pipe does not melt or burn out in the event of a fire. .

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view of a connection device showing one embodiment of the present invention, in which 1 is a refractory pipe, 2 is a synthetic resin pipe joint, 3 is a steel plate, and 4 is a metal band.

The refractory pipe 1 is made of a synthetic resin pipe 11 made of vinyl chloride resin or the like, and the outer peripheral surface thereof is covered with a non-combustible material 12 such as mortar, asbestos, steel pipe or the like. Is removed and the end of the synthetic resin tube 11 is exposed. On the other hand, the pipe joint 2 is made of a synthetic resin such as a vinyl chloride resin, and has an enlarged-diameter receiving port 21 provided at one end thereof, and the synthetic resin exposed from the end of the refractory pipe 1 to the receiving port 21. The end of the tube 11 can be fitted. The outer peripheral surface of the pipe joint 2 excluding the receiving port 21 is covered with a noncombustible material 12 such as mortar, asbestos, and steel pipe.

In the connection device of the present invention, first, the refractory pipe 1
The end of the synthetic resin pipe 11 exposed from the end of the pipe joint 2 is inserted into the socket 21 of the pipe joint 2 and connected by bonding. Therefore, steel plate 3
Is wound in a cylindrical shape so as to cover the outer peripheral surface of the receiving port 21 and both ends thereof are set so as to straddle the incombustible material 12 of the refractory pipe 1 and the incombustible material 12 of the pipe joint 2, and one end of the pipe joint is connected. 2 is fixed to the non-combustible material 12 covering the outer peripheral surface with the band 4.

[0010] Incidentally, since indoor piping may be inevitably performed in a narrow place such as above the ceiling, the steel plate 3 may be formed into a cylindrical shape in advance according to the piping conditions at the site. A cylinder having a half-split structure may be used.
FIG. 1 shows an example in which the end portion of the synthetic resin tube 11 is inserted into the receiving port 21 and then bonded and bonded. However, as shown in the conventional example of FIG. Can also be connected.

[0011]

As described above in detail, according to the present invention, the end of the synthetic resin pipe exposed from the end of the refractory pipe is inserted into the socket of the pipe joint, and the non-combustible pipe of the refractory pipe is inserted from the outer peripheral surface of the socket. Since the steel sheet is covered over the outer peripheral surface of the material, it is possible to reliably prevent the inner synthetic resin pipe from melting and burning at this connection part in the event of a fire, thereby preventing the occurrence of secondary disasters .

[Brief description of the drawings]

FIG. 1 is a sectional view of a connection device showing one embodiment of the present invention.

FIG. 2 is a sectional view showing a conventional connection structure.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fireproof pipe 2 synthetic resin pipe joint 3 steel plate 11 synthetic resin pipe 12 noncombustible material 21 receiving port

Claims (1)

(57) [Scope of request for utility model registration] 1. A fire-resistant pipe (1) whose outer peripheral surface is covered with a non-combustible material (12) such as a mortar or a steel pipe, and an outer periphery excluding a receiving port (21) provided at one end. A connection device for connecting to a synthetic resin pipe joint (2) whose surface is covered with a non-combustible material (12) such as mortar, steel pipe, etc., wherein the synthetic resin tube (11) is exposed from an end of a refractory pipe (1). Of the non-combustible material (12) covering the outer peripheral surface of the pipe joint (2) by fitting the end of the steel plate (3) into the socket (21) of the pipe joint (2). ) Is fixed to one end of the non-combustible material (1) of the refractory pipe (1) from the outer peripheral surface of the receptacle (21).
2) A connection device for a fire-resistant pipe covered with the steel plate (3) over the outer peripheral surface of (2).