JPS61140690A - Partition pipe for drainage - 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 [Field of Industrial Application] The present invention relates to a drainage pipe used in buildings, and particularly to a drainage partition pipe having the function of a ventilation pipe.

[Conventional technology]

Many drainage pipes are used in buildings for the purpose of treating rainwater, sewage, gray water, etc. For example, gray water from the kitchen and bathroom, and sewage from the toilet are treated through drain pipes on each side.

The reason for using separate water pipes in this way is that each end treatment method is different, and it is unsanitary to drain sewage and gray water into a single pipe. The inside of the pipe can have either positive or negative pressure depending on the flow of the drainage, i.e., whether the internal air flows in a hermetically compressed manner or the air in the branch pipes is drawn out, which can cause drainage problems. A ventilation pipe attached to the original drain pipe is used to maintain the pressure inside the pipe equal to atmospheric pressure.

Although the above-mentioned type of drain pipe has stable drainage performance, it requires four pipes including the ventilation pipe, and has the disadvantage of requiring a large pipe space and expensive installation costs.

As an alternative to this, in recent years, drainage pipes have been divided into two pipes with a partition plate, each with a ventilation pipe, and in order to omit the complicated ventilation pipes, special pipes have been installed inside the drainage pipe. It has been proposed that a pipe is provided with a joint part to rotate the drainage water and generate an air column in the center of the drainage pipe.

[Problem that the invention seeks to solve]

However, these drainage pipes have complex structures and are expensive, and in the latter case in particular, do not provide sufficient ventilation, and do not satisfy all demands such as complete separation of gray water and sewage, small piping space, etc. .

[Means for solving problems]

The present invention eliminates the above-mentioned drawbacks of conventional drainage pipes, and its gist is that the interior is partitioned into two pipes by having a partition plate arranged vertically or inclined and extending in the axial direction. According to the present invention, the partition plate has two pipes communicating with each other. This is a drainage partition pipe in which several openings are formed, and on both sides of the partition plate, water return portions that cover at least the upper portions of the respective openings are formed in a protruding manner within both pipes.

[Effect]

An opening was provided in the partition plate that divided the two pipes to communicate with each other, and the upper part of the opening was covered with a water return part, so that one of the two pipes was used as a ventilation pipe for the other. It has a simple structure and is extremely practical.

〔Example〕

In FIGS. 1 and 2, a partition plate 2 is fitted to a drain pipe main body 1 arranged vertically or in an inclined manner to form two pipes A and B inside. The drain pipe main body 1 is made of iron, synthetic resin, cement, etc., and the partition plate 2 is made of a material with good moldability such as synthetic resin.

The tops of both pipes M and B are open to the rooftop and communicate with the atmosphere.

Openings 3 are provided at important points in the partition plate 2 to allow both the pipes A and B to communicate with each other. Water return portions 4t- are formed symmetrically on both sides of the partition plate 2 and protrude into both pipes A and B.
establish. The water return portion 4 wraps around the opening, but is open at the bottom. As mentioned above, the pressure inside the drain pipe fluctuates between positive and negative pressure, but one of the two pipes, B.
For example, if wastewater flows into pipe A and no wastewater flows into another pipe B, and if the pressure inside pipe A becomes negative, the back of the water return part of the pipe pipe will be affected by the flowing waste water. Negative pressure is generated at part 5 of , and the air in conduit B flows into conduit A.

In other words, pipe B was used as a ventilation pipe for pipe A during wastewater treatment. Conversely, when the inside of pipe A becomes positive pressure, the part 5 on the back side of the water return part of pipe M also becomes positive pressure, the air in pipe M moves to pipe B, and the internal pressure decreases. In this case, the drainage inside the pipe B also tries to enter the pipe B, but because of the drainage plate, it is suppressed to a minimum, and air takes priority.

In practice, it is extremely rare for a large amount of wastewater to flow into two pipes A and B at the same time when they are full of water, and this is not a problem. Under normal conditions, when wastewater flows at the same time, there is naturally a slight pressure difference in both drain pipes, so the air in the higher pressure pipe, especially the air column, flows into the lower pressure pipe. The remaining air flows in, creating a single ventilation pipe with two pipes, and the above principle is established.

The drainage flowing down the two pipes has the water return part 4 formed as described above, and since the drainage is operated by gravity, the partition plate 2
Although there is an opening 3 in the pipe, there is almost no intrusion into the other pipe. Therefore, even if the partition pipe uses sewage water and gray water or rainwater, they will not mix through the openings 3, and no sanitary problems will occur.

Incidentally, since the drainage partition pipe of the present invention drains water using gravity, it goes without saying that it cannot be applied to a horizontal drainage pipe.

〔Effect of the invention〕

The present invention is configured as described above, and since the opening is provided in the partition plate and the opening is covered to form a water return part, the structure is simple, the internal pressure can be adjusted, there is no clogging with solid objects, and the cost is low. This has many effects such as being able to prevent gray water and sewage from mixing with the water returning part.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of a drainage partition pipe of the present invention, FIG. 2 is a cross-sectional view along n-nm of FIG. 1, and FIG. 3 is an overall view showing the relationship with a drainage source. 1... Drain pipe main body, 2... Partition plate, 3... Opening, 4... Water return part.

Claims (1)

[Claims] 1. A drainage partition pipe that is arranged vertically or inclined and has a partition plate that extends along the axial direction and divides the inside into two pipes, and the partition plate has two pipes arranged interchangeably. A drainage partition pipe, in which a plurality of openings communicating with each other are formed, and on both sides of the partition plate, water return portions that cover at least upper portions of the respective openings are formed in a protruding shape within both pipes.