JPS63115988A - Drain collecting pipe - Google Patents

Abstract

(57) [Abstract] 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 collecting pipe that connects a main drainage pipe that vertically penetrates each floor of a medium-to-high-rise building and a branch pipe for drainage on each floor. Regarding improvements.

[Conventional technology]

In general, in medium-to-high-rise buildings such as apartment complexes, hotels, and buildings, a method is adopted to comprehensively concentrate wastewater discharged from various sanitary or kitchen equipment and guide it to the sewer system, as shown in Figure 5. As shown in FIG. This is a drainage piping system that concentrates the drainage water in the main drainage pipe. Further, a ventilation port 5 is provided at the top of the drainage main pipe l, and the bottom part is connected to a drainage basin 6 and the like. In such a drainage piping system, a large amount of wastewater flows down the main drainage pipe l rapidly, causing drainage noise, a very large falling impact, and negative pressure inside the main drainage pipe l. If this occurs, the water seal of the trap of the sanitary or kitchen equipment 2 will be broken.Therefore, in most cases conventionally, a slat is provided protruding from the inner wall of the drain collecting pipe 4, and the drain main pipe 18 is closed. The above-mentioned problems have been solved by forcibly swirling the wastewater flowing in from the main drainage pipe 3 and forming a low-velocity pipe wall flow that flows down along the inner wall of the main drainage pipe 1.

[Problem that the invention seeks to solve]

However, such conventional drainage collecting pipes have a structure in which the inner wall is provided with a blade plate that protrudes into the flow path, so foreign substances mixed in and flowing into the wastewater are prevented from reaching the blade plate. There was a risk that it would get caught, which could cause the drain pipe to become clogged. In addition, since the wastewater is forced to swirl by directly colliding with the slats, drainage noise is generated due to the collision with the slats, and ventilation inside the drainage collection pipe is not necessarily sufficient. Ta.

Therefore, a technical object of the present invention is to remove the blades that cause clogging of the drainage pipe, and to reliably prevent the generation of drainage noise, falling impact, and furthermore, the water seal breakage of the trap.

[Technical means for solving the problem] In order to solve the above technical problem, the present invention has a main body connected to the upper and lower ends of the main body, and a drainage main that penetrates each floor of the building. , in a drainage collecting pipe in which a branch pipe for drainage is connected to the 114th part of the main body, the pipe is continuously inserted into the main body below the main drainage pipe connected to the upper part of the main body, and the lower end is inserted into the body part. An open inner cylindrical pipe is provided, and at the bottom of this inner cylindrical pipe, a wood cutting part is formed with a slanted lower end edge that guides the drainage water flowing down inside the drainage main pipe in one direction. It is used as a means.

[Effect]

According to the above-mentioned means, since there are no protrusions that can cause clogging on the pipe wall and drainage part of the drainage manifold, drainage can be smoothly carried out without foreign objects getting caught. In addition, the drain wall flow that has flowed down the drain main pipe is guided to turn in one direction by the viscous action that occurs between it and the drain formed at the bottom of the inner pipe, so it flows down the inner wall at a low speed. A pipe wall flow is formed naturally, and drainage noise in the drainage collecting pipe and drainage main pipe is prevented. Furthermore, since the waste water is diverted at the drainage part, a ventilation zone is formed near the bottom of the drainage part, thereby reliably preventing the water seal from breaking in the trap.

〔Example〕

Embodiments of the present invention will be described in detail below based on the accompanying drawings.

In the embodiment of the present invention shown in FIGS. 1 to 3, the drain collecting pipe 7 passes through a main body 8 having a large-diameter cylindrical body part 9 and a tapered part 10 at its lower part, and a shoulder part 11 of this main body 8. It consists of an inner cylindrical tube 12 whose lower half is inserted into the main body 8 and whose lower end is open inside the body 9. And the main body 8
An upper drainage main 13 and a lower drainage main 14 that pass through each floor of the building are connected to the upper end and the lower end, respectively.
The lower end of the upper drainage main pipe 13 is connected to the upper end by a pipe joint, etc. In the connection between the two, the inner cylindrical pipe 12
is formed of a member having the same diameter as the upper drainage main pipe 13,
Substantially, the L section drainage main pipe 13 continues as it is to the main body 8.
It has an inward structure. On the other hand, upper drainage main 1
Lower drainage main pipe 14 formed by a member having the same diameter as 3.
The upper end of the lower drainage main pipe 14 is connected to the lower connecting pipe 17 integrally extending from the lower end of the tapered portion 10 of the main body 8 by a pipe joint or the like.

The inner cylindrical tube 12 is formed of a cylindrical member having a slight wall thickness, and four sawtooth-shaped drainage portions 18 are formed at the lower part of the inner cylindrical tube 12. Each drain part 18 has a lower edge 1
9 has a substantially triangular shape that is inclined in one direction along the circumference, and the lower end edge 19 gives drainage flowing down inside the upper drainage main pipe 13 a turning direction in the inclined direction. The four drain portions 18 are formed on orthogonal diagonals of the inner tube 12, and all have lower edges 19 inclined in the same direction.
have. Therefore, the lower edge 19 of the draining portion 18,
A triangular space 21 corresponding to the drain section 18 is formed between it and the vertical front edge 20 of the drain section 18 adjacent to the rear thereof, and the space 21 This will create a ventilation zone. Further, in this embodiment, the draining portion 18 is
The formation of the ventilation zone is made more reliable by inducing the first branch flow by the V-groove 22 cut deeply between the vents and promoting the second branch flow by the serrated water cut.

On the other hand, the ends of branch pipes 24 and 25, which are piped to each floor of the building, are connected to the body part 9 of the main body 8, respectively. It is connected to connecting branch pipes 26, 27 integrally formed on the peripheral wall of the section 9 by a pipe joint or the like.

Further, in this embodiment, the branch pipes 24 and 25 are connected to a portion offset from the center of the main body 8, as shown in FIG.
This is to generate a swirling flow in the same direction as the direction in which the drainage water from the upper drainage main pipe 13 is swirled by the drainage part 18.

Therefore, in the drainage collecting pipe 7 having such a configuration, as shown in FIG. The water is separated by each drain 18, and the divided drainage flows along the lower edge 19 of the drain 18 due to the viscosity of the water. The water is removed by being guided to turn in the direction of inclination of the edge 19, so as to protrude from the lower edge 19 in a tangential direction. Therefore, the drained water is drained from the drain collecting pipe 7.
The liquid collides with the inner wall at a shallow angle, forming a swirling flow along the inner wall.

In addition, in this embodiment, when the drainage water flowing down the inner cylindrical pipe 12 is subjected to a diversion action by the drain portions 18, each drain portion 18
Since the flow of water is cut off in the space 21 formed between the spaces 21 and 21, a large ventilation zone 2 is created near the space 21 and its lower part.
9 will be formed. Therefore, an air passage 30 is secured in the main body 8, which communicates with the branch pipes 24, 25 from the air column formed in the center of the upper drainage main pipe 13 via this ventilation zone 29.

On the other hand, the wastewater flowing from the branch pipes 24 and 25 into the drainage collecting pipe 7 flows tangentially into the main body 8 near the bottom of the inner cylinder pipe 12, resulting in swirling in the same direction as the swirling flow in the drainage part 18. A flow will be formed, and the two will merge within the main body 8 to generate a larger swirling flow. Also,
Since the inner cylindrical pipe 12 is formed straight and has no protrusions on the outside, an inflow path from the branch pipes 24 and 25 is secured, and drainage from the branch pipes 24 and 25 is also made smooth.

In addition, in the above embodiment, four drainage parts 1 are provided at the lower part of the inner cylindrical pipe 12.
Although the explanation has been given on an example in which 8 grooves are formed, it is needless to say that the number is not limited to 4, and it is also possible to form the entire periphery as one draining part.

〔effect〕

As explained above, according to the drainage collecting pipe according to the present invention, an internal pipe that is continuous with the upper drainage main pipe is provided in the main body, and a drainage part whose lower end slopes in one direction is provided at the lower part of the inner cylinder pipe. Because of this, the wastewater flowing down the drainage main pipe is guided to turn in one direction at this drainage part and collides with the inner wall of the main body at a shallow angle, so the collision noise at that time is small. Drainage noise in the drainage collection pipe can be suppressed compared to the conventional forced swirling flow.

Furthermore, the waste water that has been induced to swirl flows down within the drainage main pipe while swirling greatly, and its centrifugal force ensures the formation of a pipe wall flow. The falling speed of the drainage water flowing into the pipe wall is suppressed by the viscous resistance with the inner surface of the drainage main pipe, which reduces the drainage noise in the drainage main pipe and also reduces the impact when it falls.

In addition, a ventilation zone can be created in the wastewater collection pipe by the diversion of wastewater at the drain, so that the branch pipe can constantly communicate with the air column in the main drainage pipe through this ventilation zone, and the trap can be sealed. Water damage is reliably prevented.

Furthermore, inside the drainage collection pipe, baffles that could cause clogging have been removed not only from the pipe wall but also from the inner cylinder pipe, so that a sufficient flow path from the main drainage pipe and branch pipes is ensured. ,
Foreign matter mixed into the drainage water will not get caught, and smooth drainage can be ensured.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a drainage collection pipe according to the present invention, Fig. 2 is a perspective view of the lower end of the inner cylindrical pipe, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 4 is a drainage collection pipe. Figures 11 and 5, which show the flow of drainage through pipes, are drainage piping diagrams for medium- and high-rise buildings. 7...Drainage collection pipe 8...Main body 9...Body part 12...Inner cylinder pipe 13...Upper drainage main pipe 14...Lower drainage main pipe 18...Drainer section 19...・Lower Edge Patent Applicant: Hisashi Nakai, Attorney, Patent Attorney, Upper Line: Figure 1, 13, -Engineer's Wandering Vehicle Sound, 14, 1,000 II' style Y water inlet pipe + 8, ff1 (C71 reference P, 1 piece) Sennarien N2 Figure 3 Figure 4 FXJ Figure 5

Claims (1)

[Claims] A drainage collection in which main drainage pipes passing through each floor of the building are connected to the upper and lower ends of the main body, and branch pipes for drainage are connected to the trunk of the main body. In the pipe, an inner cylindrical pipe is inserted into the main body continuously below the drainage main connected to the upper part of the main body, and the lower end is open inside the body, and the drainage main is connected to the lower part of the inner cylindrical pipe. What is claimed is: 1. A drainage collection pipe, characterized in that a drain section is formed with a sloping lower end edge that gives one-way turning guidance to drainage water flowing down inside the pipe.