JPH09195341A - Drain pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance a flowing down ability of drainage and prevent flowing out to the drain pipe at each floor by forming a vertical drain pipe between aggregation couplings at each floor with a ribbed pipe having a plurality of spiral ribs in its inner peripheral surface and a pipe with a smooth inner surface. SOLUTION: A drain pipe 22a at each floor is connected to a vertical pipe passage 12 via an aggregation coupling 20. The vertical pipe passage 12 is formed of a vertical drain pipe 18b composed of a smooth inner surface pipe 26 connected by a socket pipe 28 to an inner surface ribbed polyvinyl chloride pipe 24 with a plurality of spiral ribs 24b formed in its inner peripheral surface. Drainage from the drain pipe 22a at each floor flows in the inner surface ribbed pipe 24 passing through the aggregation pipe 20 and is turned to be a circulation flow by the spiral ribs 24b to flow down swiftly, and a flowing down ability thereof is improved by an air core generated in its center. When it enters in the pipe 26 from the inner surface ribbed pipe 24, circulation is attenuated to be a water flow in substantially parallel to the pipe shaft so that drainage does not flow out to the drain pipe 22a at each floor and flows down in the aggregation coupling 20. Moreover, drainage is precluded from overflowing in the inside of each room caused by a cleaning material stayed in the drain pipe 22a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage pipeline, and more particularly to a drainage pipeline that passes through, for example, each floor of a high-rise building.

[0002]

2. Description of the Related Art An example of this type of conventional drainage pipe is disclosed in Japanese Patent Laid-Open No. 6-185099. A conventional drainage pipeline 1 shown in FIG. 9 includes a vertical pipeline 2 arranged vertically so as to pass through each floor of a middle-high-rise building and a horizontal pipeline 3 arranged substantially horizontally. A leg joint 4 is provided on the leg of the vertical conduit 2.
Is arranged and the vertical pipe line 2 and the horizontal pipe line 3 are connected. The vertical conduit 2 includes a plurality of inner ribbed pipes 6 (6a, 6b, ...) With spiral ribs 5 (5a, 5b, ...) Formed on the inner face, and a plurality of wastewater pipes 7 (7a, 7b) from each layer. ,) Are connected and formed by the collective joints 8 (8a, 8b, ...). Here, the inner ribbed pipe 6 of the vertical pipe line 2 connected to the leg joint 4
The spiral rib 5a of a is spirally formed at a predetermined angle with respect to the tube axis at the upper portion of the inner ribbed tube 6a. Then, the pitch of the spiral gradually increases from the middle portion toward the lower end, and the spiral is formed substantially parallel to the pipe axis at the lower end. On the other hand, inner ribbed pipes 6 (6b, 6) that connect the collective joints 8 on each floor
The spiral ribs 5 (5b, 5c, ...) Of c, ... Are formed in a spiral shape at a predetermined angle with respect to the pipe axis from the upper end to the lower end of the inner ribbed pipe 6.

According to this conventional drainage pipe 1, sewage, drainage, etc., discharged from each floor, flows into the vertical pipe 2 from the portion of the collective joint 8 of the sewage pipe 7. Then, this sewage and the like becomes a swirling flow by the spiral ribs 5 of the inner ribbed pipe 6 of the vertical conduit 2, and the flow-down capability thereof is improved. The swirling flow of sewage and the like is attenuated by the spiral rib 5a formed directly above the leg joint 4, that is, substantially parallel to the pipe axis of the vertical pipe 2, and then the leg joint 4 and the lateral joint 4 are crossed. It is discharged to a sewer main or a wastewater main (not shown) via the pipe line 3. In this way, the swirling of sewage and the like is attenuated in the legs of the vertical pipe line 2, so that when drainage water containing detergent flows down, the drainage water is violent in the leg joint 4 and the horizontal pipe line 3 to generate bubbles. Is prevented. Therefore, the problem that the bubbles are accumulated in the vertical pipe line 2 and flow backward, and flow out into the room from a sanitary device or the like (not shown) disposed at the tip of the dirty water pipe 7a is solved.

[0004]

However, what kind of behavior the drainage that swirls and flows down in the vertical pipe 2 behaves at the connection portion between the wastewater pipe 7 and the collective joint 8 provided in each floor. It has not been examined at all. Then, when the present inventors examined the behavior of the swirling drainage in such a portion, it was found that the behavior of the drainage in the portion of the collective joint 8 on each floor was as follows. That is, from the upper side of the vertical pipe line 2, the pipe 6 with inner ribs (6b, 6c,
Drainage that has flowed down as a swirling flow through ...) bounces out of the collective joint 8 into the wastewater pipes 7 of each floor, and the swirling flow collides with the wall surface of the collective joint 8 at this part, generating bubbles. It turned out to be a cause and the flow was disturbed.
It was also found that these things cause air pressure fluctuations in the vertical pipe line 2 and cause water to break in a trap such as a sanitary device (not shown) arranged in front of the dirty water pipe 7.

Therefore, a main object of the present invention is to provide a drainage pipe capable of preventing drainage that swirls down a vertical pipe and flows down into a wastewater pipe provided in each floor. .

[0006]

The present invention is directed to a vertical drainage pipe which is provided upright over a plurality of floors of a building and which produces a swirling flow on the inner surface for drainage, and a collective joint for flowing the drainage of each floor into the vertical drainage pipe. And a horizontal pipe joined to the lower end of the vertical drain pipe by a leg joint, wherein the swirling flow is damped immediately above the collective joint.

[0007]

The swirl of the drainage from each floor flowing down as a swirling flow on the inner surface of the vertical drainage pipe just above the collective joint is attenuated. When this drainage flows down in the collective joint, the flow-down direction is substantially parallel to the pipe axis of the vertical drainage pipe.

[0008]

According to the present invention, the swirling of drainage just above the collective joint is damped, and the drainage flows down in the collective joint substantially parallel to the pipe axis of the vertical drainage pipe.
It is possible to prevent the water from flowing out into the drain pipe on each floor that is joined to the collective joint. Further, since this drainage does not collide with the wall surface of the collective joint and the flow thereof is not disturbed, it is possible to prevent the trap of the sanitary equipment (not shown) disposed at the tip of the drainage pipe on each floor from breaking.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drainage pipe 10 shown in FIG. 1 is a vertical pipe 12 arranged vertically so as to pass through each floor of a middle- and high-rise building as shown in FIG. 2 and its leg joints. And a horizontal conduit 16 connected substantially horizontally via 14. Vertical pipe 12
Is a plurality of vertical drainage pipes 18 (18a, 18b, 18c,
...) is provided on each floor with a collective joint 20 (20a, 20a).
b, 20c, ...). Also,
The drainage pipe 22 (22
a, 22b, 22c, ...) Are connected. Here, the vertical drain pipes 18 (18b, 18c,
...) is formed by connecting the inner ribbed pipe 24 and the pipe 26 to the socket pipe 28.
It was connected using.

The inner ribbed pipe 24 shown in FIGS. 3 to 5 is a cylindrical PVC pipe having a predetermined length, and the inner periphery thereof has a plurality of lines as shown in the radial sectional view of FIG. (12 threads in this embodiment) spiral ribs 24a are formed. Spiral rib 2
4a is formed in a spiral shape on the inner circumference of the inner ribbed tube 24 at a predetermined angle with respect to the tube axis. This inner ribbed tube 24
The lower part of the collective joint 20 provided on each floor is connected to the upper part of the pipe, while the lower part of the inner ribbed pipe 24 is provided with a pipe 26 of a predetermined length having substantially the same diameter as this pipe.
8 is used for connection. Here, the spiral rib 24a unlike the inner ribbed tube 24 is not formed on the inner circumference of the tube 26, but is formed smoothly. Then, the lower portion of the pipe 26 is connected to the upper portion of the collective joint 20 on the next lower floor.

The collective joint 20 is a T-shaped cheese, and is for fitting pipes into the respective holes to connect them (FIG. 1). And the hole 2 penetrated by the collective joint 20
The depth direction of 1a corresponds to the vertical direction, and the hole 21b is arranged in the lateral direction of the collective joint 20. Here, the collective joint 2
As described above, the lower portion of the pipe 26 of the vertical drainage pipe 18 is fitted into the upper portion of the hole 21a which is penetrated by 0. On the other hand, the upper portion of the inner ribbed pipe 24 of the vertical drainage pipe 18 is fitted into the lower portion. A drain pipe 22 provided on each floor is fitted into the lateral hole 21b of the collective joint 20.

A leg joint 1 arranged at the leg of the vertical conduit 12.
4 and the collective joint 20 are connected using an inner ribbed pipe 30 having a predetermined length and having an axial cross section as shown in FIG. A plurality of spiral ribs 30a are formed on the inner circumference of the inner ribbed pipe 30, similar to the inner ribbed pipe 24 described above. However, the spiral rib 30a is the inner rib tube 30
Has a spiral shape at a predetermined angle with respect to the pipe axis, but the pitch of the spiral gradually increases from the middle portion toward the lower end, and is formed substantially parallel to the pipe axis at the lower end. .

The leg joint 14 is a 90 ° elbow, and one end of the leg joint 14 is connected to a lower end of an inner ribbed pipe 30 provided at the lowermost portion of the vertical conduit 12 via a socket pipe 32. On the other hand, the other end is provided with the horizontal pipe 16 through the socket pipe 34.
The horizontal conduit 16 is arranged substantially horizontally, and its end is connected to a sewer main or a waste water main (not shown). When the drainage water from the drainage pipe 22 provided on each floor in the drainage pipe 10 flows into the vertical pipe 12 through the collective joint 20, the drainage pipe 2 at the upper portion of the vertical drainage pipe 18 has inner ribs 2.
A spiral flow along the spiral rib 24a of No. 4 is made to flow down.
Then, at this time, an air core is formed in the center of the vertical pipe line 12, and the drainage flowability is improved. The drainage thus flowing down in the inner ribbed pipe 24 as a swirling flow is discharged into the pipe 26 below the vertical drainage pipe 18. Here, since the inner peripheral surface of the pipe 26 of the vertical drainage pipe 18 is formed smooth, the swirling of the drainage, which is a swirling flow, is attenuated. Therefore, the pipe 26
The direction of the drainage flow inside is substantially parallel to the pipe axial direction as it goes to the lower end of the pipe 26, which is immediately above the collective joint 20. Then, this drainage passes through the inside of the collective joint 20.
Pipe 24 with inner ribs of the vertical drainage pipe 18 connected to the lower part of 0
It flows down into the inside and becomes a swirling flow again, and its downflow capability is improved. The drainage that has flowed down in the vertical conduit 12 by repeating the above is the inner ribbed pipe 3 connected to the leg of the vertical conduit 12.
Flowed into 0. This drainage becomes a swirling flow in the upper part of the inner ribbed pipe 30, and the swirling is attenuated as the pitch of the spiral rib 30a gradually increases from the middle part to the lower end. Then, the leg joint 14 and the lateral conduit 1
It is discharged smoothly into the sewer main or sewage main (not shown) without violence in 6.

According to this embodiment, the swirling of the drainage, which is a swirling flow, is attenuated at the portion of the pipe 26 immediately above the collective joint 20, and the direction of the flow is substantially parallel to the pipe axis of the vertical pipe line 12. . Therefore, as in the conventional case, this drainage is collected by the collective joint 20.
When flowing down, it does not flow into the drain pipe 22 of each floor connected to the collective joint 20. Furthermore, when drainage containing detergent and the like is caused to flow down, it is possible to prevent bubbles from being generated in the drainage pipe 22 and being accumulated and flowing back to the inside of the room. Further, since the drainage does not collide with the connection between the drainage pipe 22 and the collective joint 20 and the flow thereof is not disturbed, the vertical pipeline 2
It is possible to prevent the trap (not shown) provided at the tip of the drain pipe 22 on each floor from breaking due to the fluctuation of the air pressure inside.

The drainage line 40 of another embodiment shown in FIG.
The vertical drainage pipe 42 in which the inner ribbed pipe 24, the pipe 26 and the socket pipe 28, which are the vertical drainage pipes 18 of the drainage pipe 10 shown in FIG. 1 embodiment, are integrally formed is used. Therefore, the spiral rib 44 having a predetermined angle is formed from the upper end of the inner circumference of the vertical drainage pipe 42 to the intermediate position. The spiral rib 44 is not formed from the intermediate position to the lower end, but is formed smoothly.

Also in this embodiment, the same effect as that of the drainage pipe 10 shown in the embodiment of FIG. 1 can be obtained. In the drainage pipe 50 of the other embodiment shown in FIG. 8, the inner ribbed pipe 30 connected to the upper portion of the leg joint 14 in the drainage pipe 10 shown in the embodiment of FIG. 1 is also connected to the upper portion of the collective joint 20. It was done.

According to this embodiment, the pitch of the spiral ribs 30a of the inner ribbed pipe 30 connected to the upper portion of the collective joint 20 is formed substantially parallel to the pipe axis from the middle to the lower end of the inner ribbed pipe 30. It Therefore, the direction of the drainage flow can be more surely parallel to the pipe axis immediately above the collective joint 20, and the drainage is more reliably discharged into the drainage pipe 22 of each floor from the connection portion with the collective joint 20. Can be prevented.

Further, in the above-mentioned embodiment, the inner ribbed pipe 2 is used.
4, 30 and the vertical spiral pipe 42 on the inner circumference of the spiral rib 2
Although the case where 4a, 30a and 44 are formed to make the drainage flow swirl is shown, the drainage may be made swirl flow by forming spiral grooves instead of the protrusions. In addition, although the case where a PVC pipe is used as the drain pipe is shown in the above-described embodiment, a PVC lining steel pipe or the like may be used instead of the PVC pipe.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention;

FIG. 2 is a piping diagram of the embodiment shown in FIG.

FIG. 3 is a perspective view showing a tube with inner ribs.

FIG. 4 is a radial cross-sectional view of a tube with inner ribs.

FIG. 5 is an axial cross-sectional view of an inner ribbed tube.

FIG. 6 is an axial cross-sectional view of an inner rib tube used for a leg portion.

FIG. 7 is an illustrative view showing another embodiment of the present invention.

FIG. 8 is an illustrative view showing another embodiment of the present invention.

FIG. 9 is an illustrative view showing a conventional technique;

[Explanation of symbols]

 10, 40, 50 ... Drainage pipe 12 ... Vertical pipe 14 ... Leg joint 16 ... Horizontal pipe 18, 42 ... Vertical drainage pipe 20 ... Collective joint 22 ... Drainage pipe 24, 30 ... Inner ribbed pipe 24a, 30a , 44 ... spiral rib 26 ... pipe 28, 32, 34 ... socket pipe

Claims (1)

[Claims] 1. A vertical drainage pipe provided upright over a plurality of floors of a building to generate a swirling flow on the inner surface for draining, and a collective joint for draining the drainage of each floor into the vertical drainage pipe.
A drainage pipe including a horizontal pipe joined to a lower end of the vertical drainage pipe by a leg joint, wherein the swirl flow is attenuated immediately above the collective joint.