JPH0819706B2 - Drainage fitting pipe - Google Patents

Description

TECHNICAL FIELD The present invention relates to a drainage joint pipe used in a drainage pipe system of a high-rise building or the like.

(Prior Art) When drainage flows down a drainage pipe, if it flows down over the entire cross section of the pipe, the pipe internal pressure rises along with the flowdown, and a water trap for a drainage device's sealing device connected to the drainage pipe. There is a problem such as tearing. Therefore, conventionally, the joint pipe of the vertical drainage pipe is provided with a bias flow guide that biases the drainage to one side to prevent the rise in the pipe pressure by using the other side facing the side where the drainage is biased as the ventilation layer. There is something.

(Problems to be Solved by the Invention) In the conventional one, there is a problem that a part of drainage collides with the non-uniform flow guide and bounces off, blocking the drainage flow path and preventing rise in pipe pressure. .

 The present invention aims to solve the above problems.

(Means for Solving Problems) A feature of the present invention for solving the problems of the conventional technique is that the upper and lower ends have connection openings 2 for the vertical drain pipe 1,
3, the upper side is an upper inclined pipe 4 that shifts to one side as it goes downward, and the lower side is a lower inclined pipe 5 that shifts to the other side as it goes downward from the lower end of the upper inclined pipe 4. , The upper inclined pipe 4 is made larger than the vertical drain pipe 1 by bulging outward on one side, and the lower inclined pipe 5 is
Since the other side is bulged outward, it is made larger than the vertical drainage pipe 1, and the upper inclined pipe 4 is a drainage joint pipe having an inclined wall 6 for guiding the downflow drainage to one side. At the side of the slanted wall 6 of the upper slanted pipe 4, a bulging space 7 located vertically below and communicating with the inlet of the lower slanted pipe 5 is formed substantially in the vertical direction of the slanted wall 6. It is provided over the range.

(Operation) The drainage is unidirectionally flowed by flowing down the upper inclined pipe 4. At this time, a part of the drainage bounces back to one side due to the collision with the upper inclined pipe 4, but the upper inclined pipe 4 has its one side bulged outward and the drainage flow passage is expanded, so that the bounced back. The drainage is prevented from blocking the drainage flow path.

The drainage is made to flow to the other side by flowing down the lower inclined pipe 5. At this time, a part of the drainage bounces to the other side due to the collision with the lower inclined pipe 5, but the other side of the lower inclined pipe 5 bulges outward and the drainage flow path is expanded, so that the bounced back. The drainage is prevented from blocking the drainage flow path.

The drainage flowing down from the lower inclined pipe 5 is biased to the other side of the drainage flow path, so that the opposing one side becomes a ventilation layer.

(Example) Hereinafter, the Example of this invention is described based on drawing.

In the drainage joint pipe shown in FIG. 1 and FIG. 2, the upper and lower ends are connection openings 2 and 3 of the standing drainage pipe 1. Vertical drain pipe 1
Is a ventilation pipe whose upper end extends to the roof of the building and opens.

Between the upper and lower openings 2 and 3, the upper side is an upper inclined pipe 4 that shifts to one side (left in the figure) as it goes downward, and the lower side goes downward from the lower end of the upper inclined pipe 4. Accordingly, the lower inclined pipe 5 is moved to the other side (the right side in the figure).

One side of the upper inclined pipe 4 is bulged outwardly and has an elliptical shape in plan view, so that the upper inclined pipe 4 is made larger than the vertical drainage pipe 1.

The other side of the lower inclined pipe 5 is bulged outward and has an oval shape in plan view, so that the lower inclined pipe 5 is larger than the standing drainage pipe.

Although not shown, a horizontal branch pipe connected to a drainage device such as a toilet is connected to the joint pipe.

In the above configuration, the downflow drainage is first guided down by the slanted wall 6 of the upper slanted pipe 4 and is biased to one side.
At this time, part of the drainage collides with the inclined pipe 6 and bounces back to one side, but the presence of the upward bulging space 7 does not block the drainage flow path. Then, the drainage flowing from the upper inclined pipe 4 into the lower inclined pipe 5 is the inclined wall 8 of the lower inclined pipe 5.
It is flowed down by the guide, and is deflected to the other side. On this occasion,
A part of the drainage collides with the inclined wall 8 and bounces back to the other side, but the presence of the downward bulging space 9 does not block the drainage flow path. Then, as shown in FIG. 3, the drainage 10 flowing down from the joint pipe to the vertical drainage pipe 1 is biased toward the other side, and the ventilation layer 11 is formed on one side. Since there is no blockage of the drainage flow path at the time of, the rise of the pipe internal pressure accompanying the drainage flow is prevented, and the breakage of the sealing water trap of the drainage device connected through the lateral branch pipe is prevented.

(Effects of the Invention) In the present invention, the bulging space 7 that is located laterally of the inclined wall 6 and is located vertically below and communicates with the inlet portion of the lower inclined pipe 5.
However, since it is provided over substantially the entire range of the inclined wall 6 in the vertical direction, the following unique effect can be achieved.

That is, according to the present invention, in the upper inclined pipe 4, when the drainage flowing down from the vertical drainage pipe 1 collides with the inclined wall 6, the drainage bounces toward the bulging space 7 and is sufficiently discharged from the inclined wall 6. The drainage that is separated from the swelling wall and collides with any part in the vertical direction of the inclined wall 6 is repelled toward the bulging space 7 provided over substantially the entire vertical range, and the drainage in the bulging space 7 is Since it flows vertically downward toward the inlet of the lower inclined pipe 5 due to its own weight, the drainage that collides with the inclined wall 6 and bounces back and the drainage that flows downward from the bulging space 7 intersect inside the upper inclined pipe 4. This can be prevented, and the drainage flow path of the upper inclined pipe 4 can be prevented from being blocked.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a drainage joint pipe according to an embodiment of the present invention, FIG. 2 is a plan view of the same, and FIG. 1 ... Standing drainage pipe, 2, 3 ... Connection opening, 4 ... Upper inclined pipe, 5 ... Lower inclined pipe.

Claims (1)

[Claims] 1. The upper and lower ends have connection openings 2, 3 for connecting the vertical drainage pipe 1.
And the upper side is an upper inclined pipe 4 that shifts to one side as it goes downward, and the lower side is a lower inclined pipe 5 that shifts to the other side as it goes downward from the lower end of the upper inclined pipe 4.
That is, the upper inclined pipe 4 is made larger than the vertical drain pipe 1 by bulging outward on one side, and the lower inclined pipe 5 is larger than the vertical drain pipe 1 by bulging outward on the other side. Also, the upper inclined pipe 4 is a drainage joint pipe having an inclined wall 6 for guiding downflow drainage to one side, and the inclined pipe 6 is provided on the side of the inclined wall 6 of the upper inclined pipe 4. A bulging space 7 located vertically below and communicating with the inlet of the lower inclined pipe 5 is provided over substantially the entire range of the inclined wall 6 in the vertical direction. .