JPH0354742B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention connects vertical drainage mains of high-rise buildings to each floor, and also connects drainage equipment (toilet bowls, wash basins, sinks, floor drainage traps, etc.) to each floor. The present invention relates to a drainage collecting pipe joint in which one end of a plurality of horizontal branch pipes is connected to the vertical drainage main pipe, and the other ends of the plurality of horizontal branch pipes are collectively connected to the vertical drainage main pipe.

Prior Art In the drainage system of a building, when the wastewater that flows from the drainage equipment through horizontal branch pipes flows down to the vertical main drainage pipe, this wastewater flows down while filling the cross section of the vertical main drainage pipe. As a result, the air pressure in the vertical drainage main on the upstream side of this drainage decreases, and the sealed water in each drainage equipment is sucked and discharged into the vertical drainage main, releasing the odor while still emitting it. There is.

In order to prevent this, in the drainage systems of low-rise buildings with about 4 or 5 floors, a ventilation pipe is connected to the upper end of the vertical drainage main pipe, and the entire cross section of the vertical drainage main pipe is sealed so that water flows down. A decrease in air pressure in the vertical drainage main on the upstream side of the drainage is prevented by introducing outside air from the ventilation pipe, and odor emission and release due to water sealing and suction discharge in each drainage equipment appliance is prevented. I was getting used to it.

However, in the drainage system of a high-rise building, there is a possibility that drainage equipment is used all at once across multiple floors in one vertical drainage system, and each drainage equipment is connected to the ventilation pipe at the top of the vertical drainage main pipe. The suction and drainage prevention effect of the sealed water inside could no longer be expected, and in order to solve this problem, a vertical ventilation pipe was installed parallel to the vertical drainage main pipe, and the two were connected at appropriate points.

Problems to be Solved by the Invention However, when a vertical ventilation pipe is installed parallel to a vertical main pipe and the two are connected at appropriate points, the drainage system becomes complicated and the construction period becomes long. The cost will be high.

In order to avoid this, in the method disclosed in Japanese Patent Publication No. 50-35349 and Japanese Patent Publication No. 51-14821, the vertical drainage pipes are unified into one, and the branch pipes leading from the drainage equipment to the main vertical drainage pipe are An inclined plate was attached to the inner circumference of the vertical drainage main, which was connected to the vertical drainage main in a tangential direction and gave swirling motion to the wastewater flowing inside the vertical drainage main, but foreign matter adhered to this inclined plate. As the construction process becomes easier, it becomes necessary to remove foreign objects within the drainage system within a relatively short period of time after construction is completed, and a nozzle that emits high-pressure water onto the inner wall of the vertical drainage main is inserted into the vertical drainage main. At times, this inclined plate obstructs the movement of the nozzle, and it is difficult to remove foreign matter attached to this inclined plate.

Means and Effects for Solving the Problems The present invention relates to an improvement of a drainage system that overcomes such difficulties, and includes vertical drainage main joints at the upper and lower ends of the joint body, and a vertical drainage main pipe joint on the circumferential surface of the middle part of the joint body. In drainage system collector pipe joints with multiple jointed branch pipes,
The intermediate portion of the joint body is formed into a gently curved surface that expands outward, and the opening that leads from the intermediate expanded portion to the joint branch pipe is located on a plane perpendicular to the vertical center line of the joint body. The connecting branch pipes are formed to be gently connected to the intermediate expansion portion of the joint body in the same tangential direction, and to be inclined at different inclination angles with respect to the vertical center line of the joint body. It is.

Since the present invention is configured as described above,
By connecting a vertical drainage main pipe to the vertical drainage main joints at the upper and lower ends of the joint body of the drainage system collector pipe joint, and connecting a horizontal branch pipe that communicates with the drainage equipment to the joint part of the joint branch pipe, When the wastewater discharged from the drainage equipment and flows through the horizontal branch pipe passes through the tangentially oriented joint branch pipe, it is given a force that causes a swirling motion, and the centrifugal force of the swirling motion causes it to move vertically. A space is left in the center of the drainage main pipe so that the waste water can flow down in a spiral manner along the vertical drainage main pipe.

Furthermore, in the present invention, each of the joint branch pipes to which a plurality of horizontal branch pipes leading to each drainage equipment are respectively connected has an intermediate enlarged portion of the joint body having a different inclination with respect to the vertical center line of the joint body. Because the connection is inclined at a corner, even if a large amount of wastewater flows through the plurality of horizontal branch pipes at the same time and flows into the joint body, the inflowing wastewater will increase in height in the connection direction at this intermediate bulge. Even in this part, the drainage pipe does not become filled with drainage, leaving a space in the center, and a continuous ventilation passage is reliably formed over the entire length of the vertical drainage main pipe.

In addition, in the present invention, since the intermediate portion of the joint body expands outward, the wastewater flowing in from the vertical drainage main pipe joint at the upper end of the joint body has a wide width when passing downward through this intermediate enlarged portion. The pressure is reduced near the opening leading to the joint branch pipe, and pressure fluctuations are prevented.

Embodiment An embodiment of the invention illustrated in the drawings will be described below.

The vertical drainage mains 1 are connected one after another through drainage system collection joints 10 arranged on each floor 6 of the building, and the toilet bowls 4 and wash basins 5 installed on the floors 6 of each floor are respectively toilet bowls. A drainage system is constructed by connecting to a branch pipe joint 16 of a drainage system collecting pipe joint 10 via a connecting horizontal plate pipe 2 and a gray water horizontal branch pipe 3.

The upper and lower ends of the joint body 11 of the drainage system collector pipe joint 10 are provided with vertical drainage main pipe joints 14a and 14b,
In the middle of the joint body 11, there is formed an intermediate body expansion part 12 which expands outward into a substantially spherical shape at a location slightly above the vertical center of the joint body 11. There are four openings 13a, 1 in the swollen part at 90° intervals when looking from the top to the bottom.
3b, 13c, 13d are provided, and the opening 13
The joint branch pipes 15a, 15b, 15c, and 15d communicating with the joint branch pipes 15a, 13b, 13c, and 13d are oriented at different angles of inclination in the tangential direction and in the upward direction, respectively, and are located at the pipe ends of the joint branch pipe 15. The drainage system collecting pipe joint 10 is arranged so that the branch pipe joints 16a, 16b, 16c, and 16d are located on the same horizontal plane.
is configured.

Since the illustrated embodiment is configured as described above, if wastewater is simultaneously discharged from two or more of the adjacent toilet bowls 4a, 4b and wash basins 5a, 5b on the same floor, for example, the toilet bowl 4a, , 4b simultaneously, the wastewater flows through the horizontal branch pipes 2a, 2b connecting to the toilet bowl and reaches the branch pipe joints 16a, 4b.
16b, it reaches the openings 13a, 13b via the joint branch pipes 15a, 15b, and flows into the main body intermediate expansion section 12.

At this time, the waste water that has passed through the joint branch pipes 15a, 15b and flowed into the main body intermediate expansion part 12 is moved to the joint branch pipe 1 due to inertia when passing through the joint branch pipes 15a, 15b.
After flowing along the center line direction of the toilet bowls 4a and 15b, it flows down in a spiral manner onto the inner wall surface of the intermediate expansion section 12 of the main body, so even if a large amount of waste water flows into the intermediate expansion section 12 of the main body from the toilet bowls 4a and 4b at once, , a state in which a space remains in the vertical center of the main body intermediate expansion part 12 is maintained, the vertical drainage system is not temporarily blocked by drainage, and the joint branch pipes 15a, 15b and the toilet connection horizontal branch pipe are If the air pressure in 2a, 2b does not drop below atmospheric pressure, the other joint branch pipe 1
5c, 15d and gray water horizontal branch pipes 3a, 3b are neither reduced below atmospheric pressure nor pressurized above atmospheric pressure, and as a result, each toilet bowl 4a, 4b, sink The water seal inside the containers 5a and 5b can be maintained as they are, and odor leakage can be prevented.

In particular, even if the toilet bowls 4a and 4b simultaneously drain water and a large amount of wastewater is discharged from the basins 5a and 5b at the same time, the water is connected to these via the horizontal branches 2a, 2b, 3a, and 3b, respectively. Between the joint branches 15a, 15b, 15c, 15d
As shown in FIGS. 3 and 4, since the angles of inclination with respect to the vertical direction are different, each joint branch pipe 15a, 15b, 15c, 15d
Therefore, the height of the swirling flow of wastewater flowing into the main body intermediate expansion section 12 is different, so that it is not concentrated in one place, and therefore, a space is reliably maintained in the vertical center of the main body intermediate expansion section 12, and the vertical drainage system The pressure fluctuations in the horizontal branch pipes 2a, 2b, 2c due to the containment of these wastewaters are sufficiently prevented, and odor leakage can be reliably avoided.

Also, as is clear from FIG. 2, the joint branch pipe 15
The drainage water from the joint branch pipe 15c flows toward the joint branch pipe 15c, and the drainage water from the joint branch pipe 15b flows toward the joint branch pipe 15d, and as is clear from FIG. Because they are different, the waste water flowing from the joint branch pipe 15a through the opening 13a does not flow toward the opening 13b, and the waste water flowing from the joint branch pipe 15b through the opening 13b does not flow toward the opening 13a, and the toilet bowls 4a, 4b The drainage water is prevented from interfering with each other, and the above-mentioned odor leakage is more reliably prevented.

Further, since the shape of the drain pipe joint 10 is simplified and there is no protrusion, foreign matter is less likely to adhere to the drain pipe joint 10.

Furthermore, when it becomes necessary to remove foreign matter that has adhered to the drainage system after a certain period of time has passed after the completion of the building, equipment for removing foreign matter can be easily inserted into the drainage system. At the same time, foreign matter can be easily removed and the foreign matter removal work can be carried out with great efficiency.

Moreover, since the drainage system collecting pipe joint 10 has a simplified shape, it can be manufactured at low cost.

Effects of the Invention As described above, in the present invention, even if a large amount of wastewater flows into each of the plurality of joint branch pipes at the same time,
Since the height of the swirling flow from each joint branch pipe in the vertical drainage main pipe is different and the swirling flow does not concentrate at the same point, a space communicating vertically is left in the center of the vertical drainage main pipe, and the vertical drainage A continuous ventilation passage can be reliably formed over the entire length of the main pipe.
Pressure fluctuations near the opening leading from the intermediate expansion part of the joint body to the joint branch pipe can be suppressed, and as a result, the water seal inside the drainage equipment in the drainage system is maintained reliably, preventing the release and release of odors. It can be prevented.

Furthermore, in the present invention, since the inner surface of the joint is formed into a simple, gently curved surface, foreign matter in the drainage is difficult to adhere to, and furthermore, the work of removing foreign matter from the drainage system can be carried out with great ease.

Moreover, in the present invention, since the drainage system and pipe joints are simplified, the construction period can be shortened, and costs can be reduced.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the drainage system collecting pipe joint according to the present invention, Fig. 2 is a cross-sectional plan view of the main part thereof, and Figs. 3 and 4 are shown along lines - and - in Fig. 2. FIG. 1...Vertical drain main pipe, 2...Horizontal plate pipe connecting toilet bowl, 3...Horizontal gray water branch pipe, 4...Toilet bowl, 5...
Wash basin, 6...floor, 10...drainage system collecting pipe joint,
11... Joint body, 12... Main body intermediate expansion part, 1
3...Opening, 14...Vertical drainage main joint, 15
... Junction branch pipe, 16... Branch pipe junction.

Claims (1)

[Claims] 1. In a drainage collector pipe joint that includes vertical drainage main pipe joints at the upper and lower ends of the joint body and a plurality of joint branch pipes on the circumferential surface of the middle part of the joint body, the middle part of the joint body expands outward. The joint branch pipe is formed into a gently curved surface, and the opening leading from the intermediate expansion portion to the joint branch pipe is located on a plane perpendicular to the vertical center line of the joint body. A drainage collecting pipe joint characterized in that it is gently connected to an expansion part in the same tangential direction and is formed to be inclined at different angles with respect to the vertical center line of the joint body.