JPS62260926A - Joint of vertical drain pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a drainage standpipe joint, and more specifically to a drainage standpipe joint used in buildings such as housing complexes and office buildings. Relates to one having a side branch pipe connection port on the side.

(Prior art) Conventionally, in this type of drainage vertical pipe joint (hereinafter also referred to as pipe joint), when the flow rate of drainage from the side branch pipe is large, the drainage is directed to the opposite side in the pipe joint. Direct collision with the wall surface, especially in the case of pipe joints that connect multiple side pipes, the drainage from the multiple side pipes should be carried out at the same time. Due to this, the air inside the drain pipe causes a large pressure fluctuation, which breaks the water seal of the drain trap of the drain device attached to the end of the side branch pipe, causing unpleasant odors, sewage gas, etc. in the room. This caused the problem of infiltration.

In addition, especially in the case of high-rise residential buildings, where side branch pipe drainage is present, there are many cases in which vertical pipe drainage flows down from the floor above the floor where the drainage is being carried out. Collisions of drainage water in invaded water pipes tend to be more severe, and many accidents occur in which water seals in drainage traps are broken. Moreover, these drainage collisions and drainage trucks,
The sound made when the water seal on the knob breaks is a kind of noise, especially late at night, and has long been viewed as a problem.

The inventor of this application previously developed a drainage vertical pipe joint aimed at solving this problem (Japanese Patent Publication No. 58
-52064 Publication), the present invention further eliminates this problem, further prevents direct collision of drainage water inside the pipe joint, and more effectively prevents the water seal of the drainage trap from breaking and the generation of drainage noise. The purpose of this invention is to provide a pipe joint that can prevent the above.

(Means for Solving the Problems) The present invention has been devised to further eliminate the problems of the conventional art by improving the drainage standpipe joint according to the above-mentioned Japanese Patent Publication No. 58-52064. The means includes an expanded portion formed below the upper vertical pipe connection port and whose inner diameter is larger than the inner diameter of the upper vertical pipe connection port, and extends in a substantially horizontal direction to the side of the expanded portion. A side branch pipe connection port that opens is provided at one end, and a wall surface opposite to the inner opening of the side branch pipe connection port is provided in order to allow the drainage water from the side branch pipe connection port to flow downward into the expanded portion. The bent pipe portion is formed into a slope and bent into a U-shape, and is integrally connected with the other end portion.

(Function) In the drainage standpipe joint according to the present invention, due to the above-described configuration, the standpipe drainage from the upper part mainly flows down in the form of a water film, but enters the pipe joint and enters the upper standpipe connection port. Since the restraint is released from the lower end edge of the water, it is dispersed, and a part of it becomes droplets and falls freely inside the expanding part and flows down into the drainage pipe below.

On the other hand, the drainage water from the side branch pipe is not guided downward by the bent pipe portion, but flows into the expanded portion in a dispersed manner, and freely falls into the drainage vertical pipe below.

Therefore, even if multiple side branch pipes are drained at the same time, they will not directly collide with each other, nor will they directly collide with the opposing walls in the pipe joint, and even if vertical pipes are drained at the same time, they will not directly collide with each other. In addition, since the drainage from the side branch pipe has been guided in a vertical manner so as to point downward, both drainages merge smoothly.

As a result, excessive pressure fluctuations are not caused within the drain pipe, and drainage noise can be alleviated.

(Example) An example of the present invention will be described based on FIGS. 1 and 3.

In the figure, I is a drain pipe joint main body (hereinafter simply referred to as the main body), which has an upper vertical pipe connection port 2 in the center of its upper part, and an inner diameter of the upper vertical pipe connection port 2 below it. A cylindrical expanded portion 3 formed larger than the inner diameter is provided, and a tapered tube portion 4 tapered downward is formed at the lower end of the expanded portion, thereby forming a funnel portion 5. In addition, a straight pipe section 6 formed in a straight pipe shape is connected further below the straight pipe section 6, and the lower end thereof serves as a lower standpipe connection section that is inserted into and connected to the upper end section of the lower standpipe (not shown). There is.

Further, on the side of the expanded portion 3, one end is provided with a horizontal branch pipe connecting lower opening in a substantially horizontal direction, and a wall surface 9 facing the inner opening 8 of the horizontal branch pipe connecting lower is formed with a downward slope. The bent pipe portion 10 is bent into a U-shape, and the upper edge of the other end thereof is connected to the upper vertical pipe connection port 2, and the lower edge of the other end portion is connected to the inner periphery of the bent pipe portion 10. The lower surface is the tapered pipe portion 4
It is connected to the upper edge of the upper end, and is configured to form an upper downward slope surface section 11 and a lower downward slope surface section 12, respectively, so that the downstream drainage water from the lateral branch pipe connecting lower flows downward into the expansion part 3.

Now, in this embodiment, the lower end of the upper vertical pipe Pv is slidably inserted into the inner periphery of the upper vertical pipe connection port 2,
A ring-shaped packing 13 is interposed on the surface of the packing receiver formed along the inner peripheral edge of the upper edge of the upper vertical pipe connection port 2,
This portion is kept watertight by tightening the flange 14 with bolts 15.

Further, a threaded portion is provided on the outer periphery of the opening of the branch pipe connecting lower, and a packing receiver is formed with a surface along the inner periphery of the end surface, and a packing 16 is interposed therein. 1
By screwing 7 into the threaded portion, the inserted lateral branch pipe ph is connected in a watertight manner.

In addition, 18 is a side branch pipe stop. Next, the operation of this embodiment will be explained.

The vertical pipe drainage flowing down inside the upper vertical pipe Pv mainly flows in the form of a water film along its inner circumferential surface, and from the lower end edge of the upper vertical pipe connection port 2, its restraint is released, so it is diffused and A portion becomes a droplet and falls freely through the space between the expansion and expansion part 3 and the funnel part 5, reaches the tapered pipe part 4, is guided by it, and flows down toward the straight pipe part 6.

On the other hand, drainage from the side branch pipe ph enters the bent pipe section 10,
Most of the flowing water collides with the upper downward slope surface section 11, and is guided by it to disperse and flow into the expanding section 3. At this time, much of the drainage water that disperses and flows into the
Rather than simply flowing in the horizontal direction, the bent pipe portion 10
The tapered pipe part 4 is not oriented downward due to the influence of being actively corrected downward by the upper downward slope surface part 11 of the pipe part 4.
Also, a part of the flowing water that has entered the bent pipe part 10 directly flows into the funnel part 5 along the lower downward slope surface part 12 and the inner peripheral surface of the tapered pipe part 4. Pipe part 6
flowing down towards.

Thereby, the side branch pipe drainage does not directly collide with the opposing wall surface within the pipe joint.

In addition, even if vertical pipe drainage and side branch pipe drainage are carried out at the same time, they will not directly collide;
When entering the main body, the water is positively corrected downward by the bent pipe section 10, especially the upper downwardly sloped surface section 11, so that the two drains smoothly merge and flow down.

That is, when the vertical pipe drainage and the side branch pipe drainage join in the pipe joint, the two drainage pipes do not collide directly, and moreover, the merging angle of the horizontal branch pipe drainage with respect to the vertical pipe drainage is made small, and at the same time, almost all of the tapered pipe portion 4 Since the drains merge along the entire length, excessive pressure fluctuations in the drain pipes are effectively prevented from occurring, the water seal of the drain trap is protected, and the noise of the drains at the time of the merge is alleviated.

In this example, the case where there is only one side branch pipe connection port is illustrated, but even if multiple side branch pipes are provided at opposite positions and there is simultaneous drainage from the plurality of side branch pipes. , these wastewaters do not collide directly with each other and can smoothly merge and flow down.

In this embodiment, the connection method of the drain pipe is exemplified as a so-called flange type or a cap nut type, but of course a screw connection type may also be used.

゛ (Effect) In the pipe joint according to the present invention, drainage from the side branch pipe,
Since the water can flow into the expansion part while being actively directed downward, it will not collide directly with the opposing wall, and even if drainage from vertical pipes or other side pipes is being drained at the same time. They can be smoothly merged and flowed down. Therefore, it is effective in alleviating excessive pressure fluctuations in the drain pipe, protecting the water seal of the trap, and alleviating drainage noise.

[Brief explanation of drawings]

FIG. 1 is a front center vertical cross-sectional view showing one embodiment of a drainage stand pipe joint according to the present invention, FIG. 2 is a partially cross-sectional plan view thereof, and FIG.
The figure is a sectional view taken along line A--A in FIG. 2. 1... Drainage stand pipe joint body 2... Upper stand pipe connection port 3... Expanded portion 7... Side branch pipe connection port 9... Wall surface 10... Bent pipe portion 11...・Upper downward slope section

Claims (1)

[Claims] A lateral branch that is provided with an expanded portion formed below the upper vertical pipe connection port and whose inner diameter is larger than the inner diameter of the upper vertical pipe connection port, and that opens approximately horizontally to the side of the expanded portion. A pipe connecting port is provided at one end, and a wall surface facing the inner opening of the horizontal branch pipe connecting port is formed to have a downward slope in order to allow the downstream drainage from the horizontal branch pipe connecting port to flow downward into the expanded portion. A drainage vertical pipe joint characterized in that a bent pipe part formed in a bent shape is integrally connected with the other end part.