JPS63297636A - Drain joint 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 joint pipe used in a drainage pipe system of a high-rise building, etc., and prevents water seal traps from breaking due to an increase in pressure inside the drainage pipe. This is what we aim to do.

(Prior art) As a conventional joint pipe for drainage, Japanese Patent Application No. 58-12001
There is something disclosed in No. 8. The upper and lower ends of this are the connection openings for the vertical drainage pipe, and between these upper and lower openings,
An enlarged portion that is larger than the vertical drainage pipe is provided, and an inclined portion that gradually moves inward in a radial direction as it goes downward is provided at the lower part of this enlarged portion, and the flowing drainage water is swirled around this inclined portion. There are feathers for this purpose. A deflection guide is provided inside the enlarged portion to deflect the flowing wastewater to one side of the enlarged portion and guide it to the blade. This creates a swirling flow in the drainage water, causing it to flow down along the inner periphery of the drain pipe, and by forming an air core along the pipe axis that passes through the top and bottom, it eliminates the increase in pressure inside the pipe due to the drainage flow, and This prevents problems such as breakage of the trap water seal of drainage equipment connected to the drain. In addition, the swirl imparting vanes are provided in the enlarged diameter portion so as not to narrow the drainage pipe, thereby preventing an increase in the pressure inside the pipe due to blockage of the pipe by drainage.

(Problems to be Solved by the Invention) In the conventional system described above, since the deflection guide is located inside the ampulla, if the vertical dimensions of the ampullae are small and the drainage descent distance is short, the drainage will be sufficiently diverted to one side. This makes it impossible to guide the pipe to the swirl imparting blades, making it impossible to sufficiently prevent the pipe internal pressure from rising. Therefore, it was necessary to increase the vertical dimensions of the ampulla to some extent, which was wasteful in terms of materials. In addition, drainage water from the side branch pipe connected to the ampullae collides with the deflection guide and flows backwards, staining the trap water seal and causing a foul odor.

The present invention aims to solve the above problems.

(Means for Solving the Problems) The present invention is characterized in that it solves the problems of the prior art, in that the upper and lower ends have connection openings 2.
3, and between the upper and lower openings 2.3, an enlarged part 5 that is larger than the vertical drainage pipe 1 is provided, and a vane 7 is provided in the enlarged part 5. In,
In a straight pipe section 8 having a smaller diameter than the enlarged section 5 between the upper opening 2 and the enlarged section 5, there is a deflection guide 9 for deflecting the flowing wastewater to one side of the enlarged section 5 and guiding it to the blade 7. The biased flow guide 9 is formed of an inclined surface 10 that gradually shifts toward the biased flow direction as it goes downward.

(Function) The downstream drainage water is deflected to one side of the enlarged portion 5 by flowing down along the inclined surface 10 of the deflection guide 9 before flowing into the enlarged portion 5.

(Example) Embodiments of the present invention will be described below based on the drawings.

In the drainage joint pipe according to the first embodiment shown in FIGS. 1 and 2, the upper and lower ends are the connection openings 2.3 of the vertical drainage pipe 1. The upper end of the vertical drainage pipe 1 is a ventilation pipe that extends and opens to the roof of the building.

Between the upper and lower openings 2.3 is a cylindrical enlarged portion 5 that is larger than the vertical drainage pipe 1. The lower part of the enlarged part 5 has a diameter that gradually decreases as it goes downward, thereby forming an inclined part 6 that gradually moves inward in the diameter direction as it goes downward.

This inclined portion 6 is provided with a vane 6 for swirling the downstream drainage water.

Further, the ampulla 5 is provided with an open connection part 11 with the lateral branch pipe 4, and waste water from a drainage device (not shown) such as a toilet flows into the ampulla 5 via the lateral branch pipe 4.

Between the upper opening 2 and the enlarged part 5 is a straight pipe part 8 having a smaller diameter than the enlarged part 5 and the same diameter as the vertical drainage pipe 1.

A deflection guide 9 is provided on the inner surface of the straight pipe section 8 for deflecting the downstream drainage water to one side of the enlarged section 5 and guiding it to the blade 7. This drifting guide 9 has plate-like bodies 98, 9a that protrude radially inward from a portion of the inner surface of the straight pipe portion 8 perpendicular to the direction of drifting, and a portion facing the direction of drifting integrally radially inward. It is formed of an inclined surface 1o that gradually shifts to the direction of drifting flow as it goes downward.

According to the above configuration, the downstream drainage is carried out by the slope 10 of the drift guide 9.
By flowing down along the flow, the flow is deflected to one side before flowing into the enlarged portion 5, and is guided by the swirling blades 7 to become a swirling flow and flow down. As a result, the wastewater flows down along the inner circumferential surface of the pipe, forming an air core that penetrates up and down along the pipe axis.
This prevents the air pressure in the pipes from increasing as the wastewater flows down, and prevents the water sealing trap of the drainage equipment from breaking. At this time, since the wastewater is deflected by the deflection guide 9 before flowing into the enlarged portion 5, the vertical dimensions of the enlarged portion 5 can be made smaller than in the past, thereby eliminating waste. Moreover, there is no problem that the drainage water from the side branch pipe 4 collides with the drift guide 9 and flows backward, and the water seal of the trap is not contaminated.

FIG. 3 shows a second embodiment, in which the enlarged portion 5 is formed by being bulged to one side, and the tube axis of the enlarged diameter portion 5 is aligned with the tube axis of the standpipe 1. Laterally eccentric. The other configurations are the same as those of the above embodiment and are indicated by the same reference numerals.

FIG. 4 shows a third embodiment, which differs from the first embodiment in that the enlarged portion 5 is divided into two upper and lower members 5a and 5b, which are connected via a connecting portion 12. Further, a plurality of blades 7 are provided. The rest is the same as in the first embodiment and is indicated by the same reference numerals.

(Effects of the Invention) According to the present invention, since the flow is deflected by the deflection guide and then flows into the ampulla, even if the vertical dimensions of the ampulla are made as small as possible, the material is reliably guided by the swirl imparting blades. can eliminate waste. Further, the drainage water flowing into the ampullae from the side branch pipe will not collide with the deflection guide and flow backwards, and the trap water seal will not become dirty.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a joint pipe according to a first embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a longitudinal cross-sectional view of a joint pipe according to a second embodiment, and FIG. FIG. 7 is a longitudinal cross-sectional view of a joint pipe according to a third embodiment. l... Vertical drainage pipe, 2, 3... Connection opening, 5...
- Expanded diameter part, 6... Inclined part, 7... Vane, 8... Straight pipe part, 9... Straight flow guide, 10... Inclined surface. Figure 4 Figure 3 101- Figure 2

Claims (1)

[Claims] (1) The upper and lower ends are the connection openings 2 and 3 of the vertical drainage pipe 1, and the enlarged portion 5, which is larger than the vertical drainage pipe 1, is provided between the upper and lower openings 2 and 3. , in a joint pipe for drainage in which a vane 7 is provided in the enlarged part 5, a large amount of flowing drainage is placed in a straight pipe part 8 having a smaller diameter than the enlarged part 5 between the upper opening 2 and the enlarged part 5. A drifting guide 9 is provided to deflect the flow to one side of the section 5 and guide it to the blade 7, and the drifting guide 9 is formed with an inclined surface 10 that gradually shifts to the direction of the drifting flow as it goes downward. A joint pipe for drainage.