JPH09310389A - Drain pipe fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe fitting, which displays high drainage performance and in which a solid born sound generated is reduced. SOLUTION: This drain pipe fitting 10 connecting risers disposed in the approximately vertical direction and horizontal branch pipes arranged in the horizontal direction in a drain pipe in a multistoried building consists of tubular connecting inner pipes 13, to which an upper-pipe connecting section 11a and a lower-pipe connecting section 11b coupling the risers and horizontal branch- pipe connecting sections 12 joining the horizontal branch pipes are formed, and a sheathing pipe 14 wrapping the connecting inner pipes 13, and a guide section 15 guiding drain flowing down from the upper riser coupled with the upper-pipe connecting section 11a to an inner wall and swirling guide sections 17 forming guided drain in a swirling current along the pipe wall of the lower riser joined with the lower-pipe connecting section 11b are formed to the connecting inner pipes 13. The guide section 15 is formed in a cylindrical body extended to a lower section from the upper-pipe connecting section 11a, and has a shape that an inside diameter is expanded continuously towards an opening end section from a section in the vicinity of the lower end section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain pipe joint for connecting drain pipes arranged in a multi-story building.

[0002]

2. Description of the Related Art As a drainage means for sewage and miscellaneous drainage in a multi-story building, normally, a sewage pipe, a miscellaneous drainage pipe and a ventilation pipe are arranged in parallel. The ventilation pipe is provided for smoothing the flow of drainage in the drain pipe by circulating air through the waste water pipe and the miscellaneous drain pipe. Therefore, it is necessary to take a space for disposing the ventilation pipe in the drain pipe, and the space efficiency of the building is deteriorated accordingly.

Therefore, in order to omit the ventilation pipe, as shown in FIG. 9, the drainage D is made to flow down along the inner wall of the vertical pipe 1 so as to be swirled, and the central portion of the vertical pipe 1 is ventilated. It was In this case, in the portion of the drain pipe joint 3 where the lateral branch pipes 2 gather, the swirling flow flowing down the standing pipe 1 is disturbed by the flowing water from the lateral branch pipes 2. Therefore, in order to prevent the swirling flow from disturbing, As a kind of drainage pipe joint 3, for example, there is one as shown in FIG.

That is, standing pipe connection ports 5 and 5 for connecting the standing pipe 1 are formed at the upper and lower ends of the metallic cylinder 4, and lateral branch pipe connection ports 6 and 6 for connecting the lateral branch pipe 2 are formed. And cylinder 4
The inner wall of the side wall has a horizontal branch pipe connection port 6 and a slope below the horizontal branch pipe connection port 6 that guides sewage and miscellaneous wastewater to swirl down the inside of the vertical pipe connected to the vertical pipe connection port 5 at the lower end. It is the drainage pipe joint 1 which formed the blade | wing 7.

[0005]

However, there is a problem in that the drainage that flows down is not so well guided by the inclined blades 7, and stable drainage performance cannot be obtained.

Further, since the drain pipe joint 3 is made of metal, there is a problem that the solid propagating sound generated when the drain water collides with the drain pipe is large.

The present invention has been made by paying attention to such a conventional problem, and exhibits high drainage performance without generating turbulence of swirling flow in a drainage pipe joint, and suppresses solid-borne sound. It is an object of the present invention to provide a drainage pipe joint that can be used.

[0008]

Means for achieving the object are as follows.

1. In a drainage pipe joint (10) for connecting a vertical pipe (VT, VT) arranged in a substantially vertical direction with a drainage pipe in a multi-storey building and a horizontal branch pipe (HT) arranged in a horizontal direction, An upper pipe connecting part (11a) at an upper end and a lower pipe connecting part (11b) at a lower end connecting the standing pipes (VT, VT), and a horizontal branch pipe connecting part (12) connecting the horizontal branch pipe (HT). And a tubular connecting inner tube (13) forming an outer tube and an outer tube (14) enclosing the connecting inner tube (13). The connecting inner tube (13) is connected to the upper pipe connecting portion (11a). Standing tube (V
Guide part (15) for guiding the drainage flowing down from T) to the inner wall
And a swirl guide part (17, 17) for making the wastewater guided by the guide part (15) into a swirl flow along the pipe wall of the lower standpipe (VT) connected to the lower pipe connection part (11b). And the guide portion (15) forms the upper pipe connecting portion (11).
A drain pipe joint (10), which is a cylindrical body extending downwardly from a) and has a shape in which the inner diameter continuously expands from the vicinity of the lower end portion thereof toward the open end portion.

[0010] 2. Drainage pipe joints for connecting vertical pipes (VT, VT) arranged in a substantially vertical direction and a plurality of lateral branch pipes (HT, HT ...) arranged in a horizontal direction in the drainage pipes in a multi-storey building In (10), an upper pipe connecting portion (11a) at an upper end and a lower pipe connecting portion (11) at a lower end that connect the standing pipes (VT, VT).
b) and a plurality of horizontal branch pipe connecting portions (12, 12 ...) For connecting the plurality of horizontal branch pipes (HT, HT ...) With a tubular connection inner pipe and the connection inner pipe (13). Exterior tube to wrap (14)
And a guide portion (15) for guiding the drainage flowing down from the upper standing pipe (VT) connected to the upper pipe connecting portion (11a) to the inner wall, and the guide portion. (1
5) the drainage guided by the lower pipe connecting portion (11)
a swirl guide part (17, 17) for making a swirl flow along the pipe wall of the lower vertical pipe (VT) connected to b), and the horizontal branch pipe (1) connected to one horizontal branch pipe connection part (12). The wastewater from the horizontal branch pipe (H) is connected to another horizontal branch pipe connection part (12).
The merging control part (16, 16) located between the lateral branch pipe connecting parts (12) adjacent to each other in order to prevent the inflow into the T).
...), and the guide part (15) is a cylindrical body extending downward from the upper pipe connecting part (11a), and the inner diameter continuously increases from near the lower end part toward the open end part (A). Ribs that have a shape that protrudes from the inner wall of the connecting inner pipe (13) toward the center of the connecting inner pipe (13) and extends in the direction in which the drainage flows. A drainage pipe joint (10) having a shape.

3. The merging control unit (16, 16 ...) Is the inner pipe (1) of the lateral branch pipe connecting unit (12, 12 ...).
3) The drainage pipe joint (10) according to item 2, wherein the drainage pipe joint (10) extends from a position higher than an upper portion of the inner opening (B, B ...) To a position lower than a lower portion of the opening (B, B ...).

4. Item 4. The drainage pipe joint (10) according to Item 1, 2 or 3, wherein the exterior pipe (14) is made of a sound insulating and noncombustible material.

5. Item 1 or 2 or 3 or 4 characterized in that the connecting inner pipe (13) is formed of a synthetic resin.
The drainage pipe fitting (10) according to.

Next, the operation will be described.

The drainage pipe joint (10) is a drainage pipe in a multi-storey building, and has vertical pipes (VT, VT) arranged substantially vertically and lateral branch pipes (HT, HT ...) arranged horizontally. Are connected.

Of the drainage pipes, the vertical pipe (VT) above the drainage pipe joint (10) is connected to the upper pipe connecting portion (11a) formed at the upper end of the drainage pipe joint (10) to form the drainage pipe joint (10). )
The vertical pipe (VT) below the lower pipe is connected to the lower pipe connecting portion (11b) formed at the lower end. The lateral branch pipe (HT, HT ...)
Are connected to the lateral branch pipe connecting portions (12, 12 ...) Formed between the upper pipe connecting portion (11a) and the lower pipe connecting portion (11b).

The drainage flowing down from the upper standing pipe (VT) connected to the upper pipe connecting portion (11a) is the connected inner pipe (1).
It flows down through the cylindrical guide part (15) formed in 3). Due to the shape in which the inner diameter continuously expands from the vicinity of the lower end portion of the guide portion (15) toward the open end portion (15a), most of the drainage flowing down is guided along the inner wall of the connecting inner pipe (13). To be done.

The drainage guided by the guide part (15) is transferred to the lower pipe connecting part (1) inside the connecting inner pipe (13).
When it reaches the swivel guide portion (17) formed above 1b), it flows down while swirling along the swirl guide portion (17), so that the lower standing pipe ((b) connected to the lower pipe connecting portion (11b) ( It becomes a swirling flow that flows down along the pipe wall of (VT). Therefore, in the vertical pipe (VT, VT), the horizontal branch pipe (HT) is connected to one horizontal branch pipe connecting portion (12) in which an air flow passage is formed around the central axis along the longitudinal direction. ), When the wastewater from the) merges in the connection inner pipe (13) by the drainage pipe joint (10), the merging control unit (16).
However, the combined drainage is used to connect other side branch pipes (12, 12 ...).
It is possible to prevent the backflow from flowing into the lateral branch pipes (HT, HT) connected to the inside of the lateral branch pipes (HT, HT, ...).

In this way, good ventilation is maintained in the vertical pipes (VT, VT), and the drainage speed is such that the swirling flow can be maintained, so that high drainage performance is achieved.

It is possible to prevent noise by forming the outer pipe (14) with a soundproof and non-combustible material and the connecting inner pipe (13) with a synthetic resin.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

1 to 8 show one form of the present invention.

As shown in FIG. 7, the drainage pipe joint 10 and a drainage pipe (hereinafter, referred to as "standing pipe VT") arranged in a substantially vertical direction in a high-rise building such as a hotel or a condominium and a horizontal direction. It is for connecting the drainage pipe (hereinafter, referred to as “lateral branch pipe HT”) arranged in the. The horizontal branch pipe HT, one end of which is connected to the bottom of the toilet bowl TB installed on the floor FL, is disposed between the floor FL and the slab SL, and the other end thereof is connected to the drainage pipe joint 10. The lateral branch pipe HT is arranged so as to gently incline downward from one end connected to the bottom of the toilet bowl TB toward the other end connected to the drainage pipe joint 10.

A horizontal branch pipe (not shown) for flowing miscellaneous waste water from the kitchen or the like is also connected to the drain pipe joint 10.

As shown in FIG. 1, the drainage pipe joint 10 is a tubular body having a two-layer structure including a connecting inner pipe 13 and an outer pipe 14 enclosing the connecting inner pipe 13.

The drain pipe joint 10 has an upper pipe connecting portion 11a and a lower pipe connecting portion 11b, respectively, in circular opening portions at its upper end and lower end.
Are formed. The upper pipe connecting portion 11a is the drain pipe joint 10
At the portion connecting the upper pipe VT above, the vertical pipe VT is internally fitted and fixed to the upper pipe connecting portion 11a. The lower pipe connecting portion 11b is a portion that connects the vertical pipe VT below the drain pipe joint 10, and is a vertical pipe V.
T is fitted and fixed to the lower pipe connecting portion 11b. Upper pipe connection 1
The center of the circular opening portion of 1a and the center of the circular opening portion of the lower pipe connecting portion 11b are on the same straight line, and the upper pipe connecting portion 11a
From the lower pipe connecting portion 11b so that drainage can flow down.

As is apparent from FIG. 2 to FIG. 5, there are three spaces between the upper pipe connecting portion 11a and the lower pipe connecting portion 11b.
3 to connect two lateral branch pipes HT, HT (one not shown)
Two lateral branch pipe connection parts 12, 12, 12 are formed.
The lateral branch pipe connecting portions 12, 12, 12 are formed so as to project outward from the cylindrical side surface of the drainage pipe joint 10, and the lateral branch pipe HT is internally fitted and fixed to the circular opening portion of each projecting end portion. . A flow passage is formed from the circular opening portion of each lateral branch pipe connecting portion 12, 12, 12 to the opening B, B, B formed inside the connecting inner pipe 13. The central axis of the flow path is oriented at 90 degrees with respect to the longitudinal direction of the drainage pipe joint 10.

As shown in FIGS. 1, 4 and 6, the connecting inner pipe 13 has an upper standing pipe V connected to the upper pipe connecting portion 11a.
A guide part 15 for guiding the drainage flowing down from T to the inner wall, and a swirl guide part for making the drainage guided by the guide part 15 into a swirling flow along the pipe wall of the lower pipe VT connected to the lower pipe connecting part 11b. 17, 17 and the adjacent side branch pipe connecting portion 12,
The merging control parts 16 and 16 located between 12 are formed.

The guide portion 15 extends downward from the portion where the inner diameter of the connecting inner pipe 13 increases at a position lowered from the upper pipe connecting portion 11a as a cylindrical body concentric with the upper pipe connecting portion 11a.

The guide portion 15 has a shape in which the inner diameter thereof continuously expands from the vicinity of the lower end portion thereof toward the open end portion 15a so that the drainage that has flowed down flows down along the inner wall of the connecting inner pipe 13. ing. That is, when viewed in a vertical section, the inner wall surface is tapered toward the outer wall side. The position of the lower end of the guide portion 15 extends to almost the same position as the upper portion of the openings B, B, B formed inside the connecting inner pipe 13 of the lateral branch pipe connecting portions 12, 12, 12.

As shown in FIG. 1, FIG. 4, FIG. 5 and FIG. 6, the merging control units 16 and 16 allow the drainage from the horizontal branch pipe HT connected to one horizontal branch pipe connection unit 12 to the other side pipes. Branch pipe connection part 1
It is provided in order to prevent it from flowing into the lateral branch pipe HT connected to the second inner pipe 13.
It is formed in a rib shape that projects toward the central axis of the and extends in the direction in which the drainage flows. As shown in FIG. 1, FIG. 3 and FIG.
It does not reach the level. The upper end of the portion extending in the direction in which the drainage flows down is located at a position h which is slightly higher than the upper portions of the openings B, B, B inside the connecting inner pipe 13 of the lateral branch pipe connecting portions 12, 12, 12.
1, the lower end of which is slightly lower than the lower part of the opening B, h2
It is in.

The swivel guide portions 17, 17 are provided in the lower portion of the drainage pipe joint 10 as shown in FIGS. 1, 4 and 6. The drainage pipe joint 10 includes a connecting inner pipe 13 and an outer pipe 1.
Both of the turning guides 4 are formed such that the inner diameter thereof continuously decreases from the vicinity of the height of the upper ends of the turning guide portions 17, 17 downward. The swivel guide portions 17 and 17 are respectively arranged so that the drainage flowing down the inner wall of the connecting inner pipe 13 becomes a swirl flow.
This is a plate-shaped body provided by curving so as to spiral. The two plate-like members are provided symmetrically with respect to the central axis in the longitudinal direction of the drainage pipe joint 10, and the side near the central axis is formed with a predetermined distance from the central axis as shown in FIG. Therefore, the drainage is the swivel guide parts 17, 1
When flowing down 7, a space is always generated around the central axis. The other side of each plate is a connected inner tube 1
It is provided so as to be continuous with the inner wall of 3.

Next, the operation will be described.

In FIG. 7, the drainage pipe joint 10 connects the lateral branch pipes HT, HT arranged laterally on each floor and the vertical pipes VT, VT arranged substantially vertically. Sewage and filth from the toilet bowl TB flows according to the inclination of the lateral branch pipe HT and joins with the drainage flowing down the vertical pipe VT at the drainage pipe joint 10. Unnecessary drainage from the kitchen or the like also flows according to the inclination of another lateral branch pipe (not shown), reaches the drainage pipe joint 10, and joins with the drainage flowing down the vertical pipe VT.

Drainage flows into the drainage pipe joint 10 from the upper standing pipe VT connected to the upper pipe connecting portion 11a. The drainage flows down through the cylindrical guide portion 15 formed in the connecting inner pipe 13, and in the lower part of the guide portion 15, the opening end portion 15 is opened from near the lower end portion.
Since the water flows down along the shape in which the inner diameter continuously expands toward a, the drainage that has left the opening end 15a does not flow to the opening end 15a.
After further diffusing and colliding with the inner wall of the connecting inner pipe 13, it flows down along the inner wall.

When the drainage flowing down reaches the swivel guide portions 17, 17, it flows down while swirling along the surfaces of the swivel guide portions 17, 17, so that the drainage that has passed the lower end portions of the swivel guide portions 17, 17 is connected. It flows down so as to swirl the inner wall of the inner pipe 13. When the drainage passes through the lower pipe connecting portion 11b, the lower pipe connecting portion 1
Although it enters into the lower vertical pipe VT connected to 1b, it also flows down while swirling along the pipe wall in the vertical pipe VT. Therefore, in the vertical pipe VT, an air flow passage that is not affected by the water flow is formed around the central axis in the longitudinal direction.

On the other hand, the horizontal branch pipes HT, HT connected to the horizontal branch pipe connecting portions 12, 12, 12 are drained by the drainage along the slopes of the horizontal branch pipes HT, HT, and are discharged from the openings B, B, B. They flow into the connecting inner pipe 13 of the pipe joint 10 and join together. The inflowing wastewater hits the merging control portions 16, 16 formed between the adjacent lateral branch pipe connecting portions 12, 12 and falls downward, so that it does not flow into the other lateral branch pipe connecting portions 12. In the case of the conventional one, since there is no merging control part 16, the drainage from the opening B of the lateral branch pipe connecting part 12 enters the other lateral branch pipe connecting part 12 and flows backward, thereby causing the lateral branch pipe connecting part. 1
Although the smooth flow of drainage in the inside of 2 may be hindered, such a disadvantage does not occur at all in the drainage pipe joint 10 of the present invention.

The wastewater hitting the merging control parts 16 and 16 descends and merges with the wastewater flowing down the inner wall of the connecting inner pipe 13 by the swivel guide parts 17 and 17, and thereafter, as described above, the swirl guide part 17. , 17 while turning down along the plane.
The inner diameter of the connecting inner pipe 13 is continuously reduced downward in the range where the swivel guide portions 17 and 17 are provided, and the wastewater passing through the swirl guide portions 17 and 17 swirl down at an appropriate flow rate. Go on.

In this way, as shown in FIG. 8, good ventilation is maintained both in the drainage pipe joint 10 and in the vertical pipe VT, so that the drainage flow is smooth and the drainage is vertical pipe. Since it flows down while swirling along the inner wall of the VT, the sound of bursting caused by the random drop of the drainage and other solid propagating sound caused by the drainage are reduced,
Also, high drainage performance is exhibited.

It should be noted that the outer pipe 14 is made of a sound-insulating and non-combustible material such as mortar containing fibers, and the connecting inner pipe 13 is made of a synthetic resin, for example, a hard vinyl chloride pipe, so that solid-borne sound can be further improved. The noise can be reduced and the noise can be prevented.

[0041]

EFFECTS OF THE INVENTION According to the drainage pipe joint of the present invention, the sound of explosion in the drainage pipe due to the drop of the drainage and the solid propagating sound of the sound generated when the drainage collides with the drainage pipe and the drainage pipe joint are suppressed. be able to. Therefore, in the structure using the drainage pipe joint of the present invention, the user hardly feels uncomfortable due to noise caused by miscellaneous drainage.

Further, according to the drainage pipe joint of the present invention, high drainage performance can be exhibited.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a drainage pipe joint according to one embodiment of the present invention.

FIG. 2 is a right side view showing the drain pipe joint according to the embodiment of the present invention.

FIG. 3 is a plan view showing a drain pipe joint according to one embodiment of the present invention.

FIG. 4 is a vertical sectional view taken along line MM in FIG.

5 is a line sectional view taken along the line NN of FIG.

FIG. 6 is a schematic front view showing a drainage pipe joint according to one embodiment of the present invention.

FIG. 7 is an explanatory diagram illustrating a usage state of the drainage pipe joint according to the embodiment of the present invention.

FIG. 8 is an explanatory diagram illustrating a flow of water and a flow of air when the drainage pipe joint according to the embodiment of the present invention is in use.

FIG. 9 is an explanatory diagram illustrating a usage state of a conventional drainage pipe joint.

FIG. 10 is a schematic vertical sectional view showing a conventional drainage pipe joint.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Drain pipe joint 11a ... Upper pipe connection part 11b ... Lower pipe connection part 12 ... Horizontal branch pipe connection part 13 ... Connection inner pipe 14 ... Exterior pipe 15 ... Guide part B ... Opening VT ... Standing pipe HT ... Horizontal branch pipe

Claims (5)

[Claims] 1. A drainage pipe joint for connecting a vertically arranged vertical pipe and a laterally arranged horizontal branch pipe in a drainage pipe in a multi-storey building, wherein the vertical pipes are connected to each other. An upper pipe connecting portion at an upper end, a lower pipe connecting portion at a lower end, and a tubular connecting inner pipe having a lateral branch pipe connecting portion connecting the lateral branch pipes, and an outer pipe enclosing the connecting inner pipe, The connecting inner pipe has a guiding part for guiding the drainage flowing down from the upper standing pipe connected to the upper pipe connecting part to the inner wall, and a lower standing part for connecting the drainage guided by the guiding part to the lower pipe connecting part. Forming a swirl guide portion for making a swirl flow along the pipe wall of the pipe, the guide portion is a cylindrical body extending downward from the upper pipe connecting portion, the inner diameter is continuous from the vicinity of its lower end toward the open end. Drainage pipe joint characterized by having a shape that expands mechanically. 2. A drainage pipe joint for connecting a vertical pipe arranged in a substantially vertical direction and a plurality of lateral branch pipes arranged in a horizontal direction in a drainage pipe in a multi-storey building, wherein the vertical pipe is A tubular connecting inner pipe having an upper pipe connecting portion at an upper end, a lower pipe connecting portion at a lower end, and a plurality of horizontal branch pipe connecting portions connecting the plurality of horizontal branch pipes, and an exterior enclosing the connecting inner pipe. And a guide part for guiding the drainage flowing down from the upper standing pipe connected to the upper pipe connecting part to the inner wall, and the drainage guided by the guiding part for the lower pipe connecting part. And a swirl guide part that creates a swirl flow along the pipe wall of the lower vertical pipe connected to
In order to prevent drainage from the side branch pipe connected to one side branch pipe connection part from flowing into the side branch pipe connected to another side branch pipe connection part, between the adjacent side branch pipe connection parts Forming a confluence control unit located, the guiding unit is a cylindrical body extending downward from the upper pipe connecting portion, the inner diameter of which is continuously expanded from the vicinity of the lower end portion toward the open end, The drainage pipe joint, wherein the merging control portion has a rib shape that protrudes from an inner wall of the connection inner pipe toward a center of the connection inner pipe and extends in a direction in which drainage flows down. 3. The merging control part extends from a position higher than an upper part of an opening inside the connecting inner pipe of the lateral branch pipe connecting part to a position lower than a lower part of the opening.
Drain pipe fitting described in. 4. The drainage pipe joint according to claim 1, wherein the outer pipe is made of a sound-insulating and non-combustible material. 5. The drainage pipe joint according to claim 1, wherein the connecting inner pipe is formed of synthetic resin.