JPH0941645A - Connecting construction of drain pipe for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a repairing work by connecting connections on the upper stream side of drain pipes penetrating floors of respective stories with insert flare joints, and connecting connections on the lower stream side of drain pipes with flare flange joints. SOLUTION: Connection on the upper stream side of a drain pipe 3 provided between drain pipes 1 penetrating the floors of respective stories of a building is connected to the lower stream side of the of the drain pipe 1 of the upper story through an insert flare joint 4. Further, connection on the lower stream side of the drain pipe 3 is connected to the upper stream side of the drain pipe 1 of the lower story through a flare flange joint 12, a hing band is fitted so as to fasten through bolt/nut. Next, in the case of a cleaning and improving work, the insert flare joint on the upper stream side and the hinge band of the flare flange joint 12 on the lower stream side are detached, and packing 16 is detached so as to detach the drain pipe 3. Consequently, the drain pipe can be fitted and detached only in a specified story so as to execute a piping work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for a drainage pipe for construction.

[0002]

2. Description of the Related Art Generally, a drainage pipe adopts a natural gravity flow method, and a drainage pipe P is connected by a plug-in joint J as shown in FIG.
However, in the connection of the drainage pipe P by the insertion joint J as described above, since the pipe length L for the insertion allowance overlaps, the drainage pipe P
It cannot be easily taken out unless a part of it is cut, and the drain pipe P of the same size as before can not be used at the time of restoration, and as shown in FIG. The enlarged diameter portion W of the upper end of the short pipe S is fitted to the lower end portion of the drainage pipe P of the upper floor, and the enlarged diameter portion W of the upper end of the drainage pipe P of the lower floor is fitted to the lower end portion of the short pipe S as shown in FIG. A means for connecting the upper end portion of the short pipe S and the lower end portion of the short drain pipe P ′ with the band type joint B has been adopted. Therefore, it not only takes time and effort for recovery, but also requires new materials.

[0003]

SUMMARY OF THE INVENTION Therefore, in the present invention, when constructing a drainage pipe for construction, it can be constructed from any floor at the time of new construction, and at the time of renovation and cleaning work, only the drainage pipe can be easily drained. It is intended to provide a connection structure that can be attached and detached.

[0004]

In order to solve the above-mentioned problems, the connection structure for a drainage pipe for construction according to the present invention is an upstream drainage pipe arranged between drainage pipes penetrating a floor of each floor of a building. The connection on the side is connected by a plug-in flare joint, and the connection on the downstream side is connected by a flare flange joint.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION According to the drainage pipe connecting structure of the present invention as described above, since the upstream side of the drainage pipe is flared for the insertion flare joint, the drainage that penetrates the floor of the building The downstream side of the pipe is an unprocessed pipe end, and the downstream side of the drainage pipe is flared for flare flange joints, so the upstream side of the drainage pipe that penetrates the floor of the building is flared. There is.

Therefore, for the drainage pipe, the bands of the upstream flare joint and the downstream flare flange joint are removed, the height at which the downstream packing can be taken out is raised upward, and after the packing is taken out, the drainage is removed. It can be removed by pulling it down by shaking the tube sideways.
In addition, at the time of restoration, the drainage pipe can be connected and attached in the reverse order of the above. Thus, when constructing a drainage pipe for construction, it can be constructed from any floor at the time of new construction, and at the time of renovation or cleaning work, the drainage pipe can be easily attached and detached only on a specific floor.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the construction of a drainage pipe for construction according to the present invention will be described with reference to the drawing. In FIG. 1, reference numeral 1 indicates a floor 2 on each floor of the building, and a pipe holder (not shown) simplifies the construction. The drain pipe fixed to the drain pipe 3 disposed between the drain pipes 1.
Connects the upstream side thereof to the downstream side of the drainage pipe 1 on the upper floor by the insertion flare joint 4. That is, as shown in FIG. 2, the flared expanded portion 5 of the drain pipe 3 is flared.
Is fitted to the lower end of the unprocessed drain pipe 1, and the flare flange 6 obtained by processing the flare flange of the upper end of the expanded diameter portion 5
, The packing 7 and the spacer 8 which have been fitted on the outer periphery of the lower end portion of the drainage pipe 1 in advance are overlapped, and the packing 7 is fitted to the flare flange 6, and the flare flange 6, the packing 7 and the spacer 8 are hinged. The band 9 is fitted and tightened with bolts 10 and nuts 11 to hermetically connect the upstream side of the drainage pipe 3 and the downstream side of the drainage pipe 1.

Further, the drainage pipe 3 is connected at its downstream side to the upstream side of the drainage pipe 1 on the lower floor by a flare flange joint 12 as shown in FIG. That is, as shown in FIG. 3, the reinforcing ring 15 is provided between the flare flange 13 obtained by processing the flare flange at the lower end of the drainage pipe 3 and the flare flange 14 obtained by processing the flare flange at the upper end of the drainage pipe 1. The flaring flange 13, packing 16,
The hinge band 9 is fitted to the flare flange 14 and is tightened with bolts 10 and nuts 11 to hermetically connect the downstream side of the drain pipe 3 and the upstream side of the drain pipe 1.

According to the construction drainage pipe connection structure of this embodiment, the drainage pipe 3 has the upstream flare joint 4 and the downstream flare flange joint 12 with the hinge bands 9 removed, and the downstream flare flange. After the packing 16 of the joint 12 is pushed up to a height high enough to take out the packing 16 and the packing 16 is taken out, the drain pipe 3 is shaken sideways as shown in FIG. In this way, the drain pipes 3 arranged between the drain pipes 1 that penetrate and fix the floor 2 of each floor are pulled out and removed to remove the floor 2
The drainage pipe 1 that has been fixed through can also be removed by releasing the fixation and pulling it upward. Also, at the time of restoration,
The drain pipe 1 and the drain pipe 3 can be connected and attached in the reverse order of the above. Of course, the same applies when a new installation is made.

Next, another embodiment of the construction of the drainage pipe for construction according to the present invention will be described with reference to the drawing.
Is a drainage collecting pipe that passes through the floor 2 of each floor of the building and is held by a pipe holder 17 standing on the floor 2, and a branch inlet 18 is provided on the outer periphery of the drainage collecting pipe 1 ′ immediately above the floor 2. It is integrally formed laterally. The drainage pipes 3 ', 3 "are arranged in upper and lower two stages between the drainage collection pipes 1'on each floor. The drainage pipe 3'of the upper stage has its upstream side inserted into the insertion flare joint shown in FIG. 4 is connected to the downstream side of the drainage collecting pipe 1'of the upper floor. Further, the drainage pipe 3'of the upper stage has its downstream side connected to the drainage pipe 3 of the lower stage by the flare flange joint 12 shown in FIG. ″ Is connected to the upstream side. The downstream side drainage pipe 3 ″ is connected to the upstream side of the drainage collection pipe 1 ′ on the lower floor by the flare flange joint 12 shown in FIG.

According to the connection structure for the drainage pipe for construction of this embodiment, the upper drainage pipe 3'has the hinge bands 9 of the insert flare joint 4 on the upstream side and the flare flange joint 12 on the downstream side, and the downstream side. Flare Flange Joint 12
After the packing 16 is taken out, the drain pipe 3 '
6 can be pulled out and taken out by shaking it horizontally as shown in FIG. The lower drainage pipe 3 ″ can be removed by removing the hinge band 9 of the flare flange joint 12 on the downstream side, so that the drainage drainage pipe 3 ″ can be removed from the drainage collection pipe 1 ′. By removing the upper and lower two-stage drainage pipes 3 ', 3 "arranged between the drainage collecting pipes 1'held in the upper pipe holder 17, the drainage collecting pipe 1'held in the pipe holder 17 is also pipe-held. It can be removed by releasing it from the tool 17 and pulling it upward. Further, at the time of restoration, the drainage collecting pipe 1 ′, the drainage pipe 3 ″, and the drainage pipe 3 ′ can be connected and attached in the reverse order of the above.
Of course, the same applies to the case of new installation.

[0012]

As can be seen from the above description, according to the construction structure of the drainage pipe for construction of the present invention, the drainage pipe can be easily attached / detached only on the required specific floor in cleaning the drainage pipe or repairing the drainage pipe. As a result, cleaning and repair work can be simplified and the construction period can be shortened. Also, in new construction and restoration, drainage pipes can be installed from any floor without being affected by drainage pipes on other floors, so it is possible to independently construct a pipe construction process regardless of the construction process. , The construction period can be shortened.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a connection structure for a drainage pipe for construction according to the present invention.

FIG. 2 is an enlarged cross-sectional view of part A in FIG.

FIG. 3 is an enlarged sectional view of a portion B in FIG. 1;

FIG. 4 is a view showing a state when the drainage pipe is removed in the construction drainage pipe connection structure of FIG. 1;

FIG. 5 is a view showing another embodiment of the connection structure for the drainage pipe for construction according to the present invention.

FIG. 6 is a view showing a state when the drainage pipe is removed in the construction drainage pipe connection structure of FIG. 5;

FIG. 7 is a vertical cross-sectional view showing a plug joint.

FIG. 8 shows a conventional drainage pipe restoration connection method.
Indicates a state at the start of restoration, and b indicates a state after restoration.

[Explanation of symbols]

 1 Drain pipe penetrating the floor of each floor 1'Drainage collecting pipe penetrating the floor of each floor 2 Floors 3, 3 ', 3 "Drain pipe 4 Insert flare joint 5 Expanding part 6 Flare flange 7 Packing 8 Spacer 9 Hinge band 10 Bolt 11 Nut 12 Flare flange joint 13,14 Flare flange 15 Reinforcement ring 16 Packing 17 Pipe holder 18 Branch inlet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masao Kanazawa 2-5-13 Sanno, Ota-ku, Tokyo Stock company Benkan (72) Inventor Kazuhiro Fujita 2-5-13 Sanno, Ota-ku, Tokyo Stock association Company Benkan (72) Inventor Toshio Itagaki 2-889, Aioi-cho, Kiryu-shi, Gunma Kanto Kiko Co., Ltd. (72) Inventor Yukio Kumakura 1-2-34 Bentenbashi Dori, Niigata City, Niigata Prefecture In the company

Claims (1)

[Claims] 1. A drainage pipe, which is disposed between drainage pipes that penetrate the floors of each floor of a building, is connected at the upstream side by a plug flare joint, and at the downstream side by a flare flange joint. The connection structure of the drainage pipe for construction characterized by the above.