JPH0830352B2 - Drainage fitting pipe - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage joint pipe used in a drainage pipe system of a high-rise building, and is intended to prevent breakage of a water trap due to an increase in pressure in the drainage pipe.

[0002]

2. Description of the Related Art As a conventional drainage joint pipe, Japanese Patent Application No.
8-120018 (Japanese Patent Laid-Open No. 60-11798)
Have been disclosed in. This is that the upper and lower ends are openings for connecting the vertical drainage pipe, and between the upper and lower openings, an enlarged portion having a diameter larger than that of the vertical drainage pipe is provided, and at the bottom of the enlarged portion, An inclined portion that gradually shifts inward in the radial direction as it goes downward is provided, and a blade for swirling the flow-down drainage is provided at this inclined portion. Further, a drift guide is provided inside the ampullar part for guiding the downflow drainage to one side of the ampulla part and guiding it to the blades. As a result, the downflow drainage is made to swirl to flow down along the inner circumference of the drainage pipe, and the air core along the pipe axis is formed in a vertically penetrating manner, thereby eliminating the rise in pipe pressure due to drainage downflow, It is intended to prevent problems such as breakage of trap sealing water of drainage equipment connected to. Further, the swirl imparting vanes are provided in the expanded diameter portion, so that the drainage pipeline is not narrowed, and the rise of the internal pressure due to the blockage of the pipeline due to drainage is prevented.

[0003]

However, the above-mentioned conventional non-uniform flow guide has only the function of biasing the flow-down drainage to one side of the enlarging portion, and does not have the function of giving swirl. . The lower blades provided the swirl to the drainage. Therefore, conventionally, since the swirl is imparted only by the lower blade, the swirlability of the flow-down drainage is one step further, and the pressure fluctuation in the pipe is likely to occur.

An object of the present invention is to solve the above problems.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention takes the following means. That is, the feature of the present invention is that the upper and lower ends are opening portions for connecting the standing drainage pipe, and between the upper and lower openings, an enlarged portion having a diameter larger than that of the standing drainage pipe is provided. , The upper part of this bulge is provided with a drift guide for unidirectionally diverting the downstream drainage, and the lower part of the bulge is provided with blades that swirl the downstream drainage, inclined with respect to the pipe axis. In the joint pipe for use, the non-uniform flow guide is opposed to the pipe axis in order to impart a primary swirl to the drainage.
And is installed with an inclination, and the blade is inclined with respect to the tube axis.
As for the direction, the secondary swirl in the same direction as the above primary swirl is used for drainage.
It is in the point that the direction is given .

[0006]

According to the present invention, the downward drainage is swirled by the upper bias guide and further swirled by the lower blades, so that a reliable swirl flow can be obtained. The water flows down in the drainage pipe while swirling, and as a result, an air core is formed in the central portion of the standing drainage pipe, and fluctuations in the pipe pressure are prevented.

[0007]

Embodiments of the present invention will be described below with reference to 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 and 3 of the standing drainage pipe 1. The upper end of the standing drainage pipe 1 is a ventilation pipe that extends to the roof of the building and opens.

A space between the upper and lower openings 2 and 3 is a cylindrical enlarged portion 5 having a diameter larger than that of the standing drainage pipe 1. The lower part of the enlarged portion 5 is gradually reduced in diameter as it goes downward,
It is an inclined portion 6 that gradually shifts inward in the radial direction as it goes downward. The inclined portion 6 is provided with a blade 7 for swirling the flow-down drainage. That is, the blade 7 is provided so as to be inclined with respect to the tube axis.

In addition, the enlarged portion 5 is provided with an opening connection portion 11 with the lateral branch pipe 4, and drainage from a drainage device (not shown) such as a toilet flows into the enlarged portion 5 through the lateral branch pipe 4. To be done.
Between the upper opening 2 and the enlarged portion 5, a straight pipe portion 8 having a diameter smaller than that of the enlarged portion 5 and the same diameter as the standing drainage pipe 1 is formed.
On the inner surface of the straight pipe portion 8, a drift guide 9 is provided for guiding the downflow drainage to one side of the enlarged portion 5 and guiding it to the vanes 7.

The non-uniform flow guide 9 is projected from the inner surface of the straight pipe portion 8 and is inclined in the same direction as the inclination of the blade 7. That is, the upper surface of the non-uniform flow guide 9 is formed by the inclined surface 10 that gradually shifts in the non-uniform flow direction as it goes downward. According to the above configuration, the downflow drainage flows down along the slope 10 of the uneven flow guide 9, so that the downflow drainage is unevenly flowed to one side and swirled before flowing into the enlarged portion 5. Then, it is guided by the swirl imparting vane 7 and further swirl is imparted to form a swirl flow, which flows down along the inner surface of the vertical drainage pipe 1.

That is, the drainage flows down along the inner peripheral surface of the pipe, and an air core that penetrates vertically is formed along the pipe axis to prevent an increase in the air pressure inside the pipe due to the flowdown of the drainage. Tear is prevented. FIG. 3 relates to the second embodiment, and is formed by bulging the enlarged portion 5 to one side, and the pipe axis of the expanded diameter portion 5 is one with respect to the pipe axis of the vertical drainage pipe 1. Eccentric to the side. Other configurations are the same as those in the above-described embodiment and are denoted by the same reference numerals.

FIG. 4 relates to the third embodiment, and is different from the first embodiment in that the enlarged portion 5 is divided into two parts, that is, upper and lower members 5a and 5b, and is connected via a connecting part 12. .
Further, a plurality of blades 7 are provided. Others are the same as those in the first embodiment and are shown by the same reference numerals.

[0013]

According to the present invention, since the drainage is swirled by the non-uniform flow guide and the vane, a reliable swirling flow is obtained and it is difficult for the pressure fluctuation in the pipe to occur.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a joint pipe according to a first embodiment of the present invention.

FIG. 2 is a plan view of the joint pipe according to the first embodiment of the present invention.

FIG. 3 is a vertical sectional view of a joint pipe according to a second embodiment of the present invention.

FIG. 4 is a vertical sectional view of a joint pipe according to a third embodiment of the present invention.

[Brief description of reference numerals]

 1 Vertical Drain 2 Opening for Connection 3 Opening for Connection 5 Enlarged Part 7 Blade 9 Drift Guide

Claims (1)

[Claims] 1. The upper and lower ends are openings (2) (3) for connection of the vertical drainage pipe (1), and the vertical drainage pipe (1) is provided between the upper and lower openings (2) (3). Is provided with an enlarged portion (5) having a larger diameter than that of the enlarged portion (5), and an uneven flow guide (9) is provided on the upper portion of the enlarged portion (5) for unidirectionally diverting the downward drainage.
In a drainage joint pipe in which a vane (7) for swirling downflow drainage is provided at a lower portion of the enlarged portion (5) inclining with respect to a pipe axis, the non-uniform flow guide (9) is a primary outlet for downflow drainage. Give a turn
Therefore, the blade (7) is inclined with respect to the tube axis.
The direction of inclination with respect to the pipe axis is the same as the direction of the primary turn.
A drainage joint pipe, characterized in that it is directed in the direction of giving the next swirl to the downflow drainage .