JP2010255348A - Drain pipe joint and drainage structure using the drain pipe joint - Google Patents

Drain pipe joint and drainage structure using the drain pipe joint Download PDF

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JP2010255348A
JP2010255348A JP2009108726A JP2009108726A JP2010255348A JP 2010255348 A JP2010255348 A JP 2010255348A JP 2009108726 A JP2009108726 A JP 2009108726A JP 2009108726 A JP2009108726 A JP 2009108726A JP 2010255348 A JP2010255348 A JP 2010255348A
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pipe
drainage
joint
branch pipe
cylindrical body
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JP5483924B2 (en
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Masakatsu Sakamoto
正勝 坂本
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Sekisui Chemical Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain pipe joint and a drainage structure using the drain pipe joint used for connection between a vertical pipe and a horizontal branch pipe to obtain a required minimum piping space for holding a drain vertical pipeline while easily constructing a single pipe type drainage system excelling in drainage performance even in a high-rise building with ten or more stories. <P>SOLUTION: The drain pipe joint 1a includes a joint body 2a having a cylindrical body 21 with the substantially same inner diameter as the vertical pipe 7a to be connected, and including an upper vertical pipe connection part 22 at the upper end of the cylindrical body 21, and a horizontal branch pipe connection part 3a having a bent part 31 connected to the sidewall surface of the cylindrical body 21 of the joint body 2a and curved down toward the cylindrical body 21. The internal wall surface of the cylindrical body 21 is provided with a swing blade 24, and the upper end of the swing blade 24 is located above the pipe bottom 71 of the horizontal branch pipe 7b connected to the horizontal pipeline connection part 3a. The drainage structure A is constructed using such a drain pipe joint 1a. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、立管と横枝管との合流部に用いられる排水管継手及びこの排水管継手を用いた排水構造に関する。   The present invention relates to a drainage pipe joint used at a junction between a vertical pipe and a side branch pipe and a drainage structure using the drainage pipe joint.

多層階の建築物の排水システムとして従来から二管式排水システム（例えば、特許文献１参照）が用いられているが、二管式排水システムの場合、排水立管路とは別に通気管を排水立管路に平行に設けるようになっているため、配管スペースを多く取らなければならないという問題や、排水とは直接関係のない通気管を別途設けねばならず、施工性が悪いとともに、施工に多大なコストをかけねばならないという問題などがある。   Conventionally, a two-pipe drainage system (see, for example, Patent Document 1) is used as a multi-story building drainage system. In the case of a two-pipe drainage system, the vent pipe is drained separately from the drainage vertical line. Since it is arranged in parallel with the vertical pipe line, there is a problem that a lot of piping space must be taken, and a vent pipe that is not directly related to drainage must be provided separately. There is a problem that a great deal of cost is required.

そこで、接続される立管よりも拡径し、側面に横枝管接続部が突設された胴部と、この胴部に、胴部より下側に徐々に縮径する縮径部とを備えるとともに、この縮径部の内壁面に旋回羽根を備えた集合継手が既に提案されている（例えば、特許文献２，３参照）。
すなわち、この集合継手は、旋回羽根を備えているので、立管を介して上層階から胴部に流れ込んだ排水及び横枝管接続部を介して胴部に流れ込んだ排水を旋回羽根で受けて旋回流として、排水立管路内に空気芯を常に生じさせることができる。 Therefore, the trunk portion having a diameter larger than the connected standpipe and having a lateral branch pipe connecting portion projecting on the side surface, and a reduced diameter portion gradually reducing the diameter downward from the trunk portion to the trunk portion. In addition, a joint joint has already been proposed in which a swirl vane is provided on the inner wall surface of the reduced diameter portion (see, for example, Patent Documents 2 and 3).
That is, since this collective joint is provided with swirl vanes, the swirl vanes receive the drainage that flows into the trunk from the upper floor via the vertical pipe and the drainage that flows into the trunk via the side branch pipe connection. As a swirl flow, an air core can always be generated in the drainage conduit.

したがって、この集合継手を用いれば、通気路を設けない単管式排水システムとしても、排水立管路の閉塞による圧力変化で横枝管に接続された衛生機器等の封水の破封を防ぐことができて、上記二管式排水システムに比べ配管スペースを小さくすることができるとともに、施工性も向上する。   Therefore, if this collective joint is used, even in a single-pipe drainage system that does not provide a ventilation channel, it prevents the sealing of sealing water such as sanitary equipment connected to the side branch pipe due to a pressure change due to the blockage of the drainage conduit. As a result, the piping space can be reduced as compared with the above two-pipe drainage system, and the workability is improved.

しかし、上記集合継手を用いた単管式排水システムの場合、二管式排水システムに比べて配管スペースを小さくすることができるのであるが、集合継手の胴部が立管より大きいため、立管径より余分に排水立管路の配管スペースを大きく取らなければならず、配管スペースの点でまだまだ問題がある。
また、上記集合継手は、旋回羽根が横枝管より下側にあるため、横枝管から流れ込んだ排水が直接旋回羽根に当たり、立管を流れる排水の旋回流を阻害して跳ね上がりが生じるおそれがあるとともに、継手コストが高い上、重量が重く施工性が悪いという問題がある。 However, in the case of a single-pipe drainage system using the above-mentioned collective joint, the piping space can be reduced compared to a two-pipe drainage system. There is a problem in terms of piping space because the piping space of the drainage conduit must be made larger than the diameter.
Further, since the swivel vanes are below the horizontal branch pipes in the collective joint, the drainage flowing from the horizontal branch pipes directly hits the swirl vanes, and the swirl flow of the drainage flowing through the vertical pipes may be hindered and jumping may occur. In addition, there is a problem that the joint cost is high and the weight is heavy and the workability is poor.

一方、安価であり、設置スペースが小さくて済む、JISK6739で規定されているDV継手（排水用硬質ポリ塩化ビニル管継手）のうちのＬＴ継手を合流継手として用いて、排水立管路部分の配管スペースを必要最小限にすることができるとともに、単管式排水システムの構築に対応できるとして、立管の横枝管開口部上部に、立管径とほぼ同じ管径の突起付き短管部を設け、該短管部の内面に、管径の１０〜３０％で、立管管軸に対してほぼ直角で、立管断面に対してほぼ水平かつほぼ直線状の突出部を有する突起付き単管部を設ける、あるいは、立管の横枝管開口部上部に、立管径とほぼ同じ管径の突起付き排水伸縮継ぎ手を設け、該突起が該継ぎ手管径の１０〜３０％で、立管管軸に対してほぼ直角で、立管断面に対してほぼ水平かつほぼ直線状の突出部を有する突起付き単管部を設けるようにした排水配管装置（特許文献４参照）が提案されている。
すなわち、上記排水配管装置によれば、上部から流下してくる排水は、大量で高速である場合には、突起部以外の部分はそのまま落下するが、立管の管壁に沿って流下し突起部に衝突する排水は、突起部の傾斜面を流下し、その中間から傾斜面を離れて対面の壁面に衝突し、突起部以外の流下水の速度を低下させて、流下水全体の流下速度が減速されるとともに、横枝管開口部は立管上部からの流下水水膜により閉鎖されることが避けられるため横枝管内部の圧力変動を大きく抑制できるとされている。 On the other hand, it is inexpensive and requires only a small installation space. Using the LT joint of DV joints (hard polyvinyl chloride pipe joints for drainage) specified in JISK6739 as a confluence joint, piping for the drainage vertical pipe section In order to minimize the space required and to support the construction of a single-pipe drainage system, a short pipe with a projection with a diameter almost the same as the vertical pipe diameter is provided at the upper part of the side branch pipe opening of the vertical pipe. Provided on the inner surface of the short pipe portion with a protrusion having a protruding portion that is 10 to 30% of the tube diameter, substantially perpendicular to the vertical axis of the vertical tube, and substantially horizontal and straight to the vertical section of the vertical tube. A drainage expansion / contraction joint with a projection having a pipe diameter substantially the same as the diameter of the vertical pipe is provided at the upper part of the side branch pipe opening of the vertical pipe, and the projection is 10-30% of the joint pipe diameter. Almost perpendicular to the tube axis, almost horizontal and straight to the vertical section There has been proposed a drainage pipe device (see Patent Document 4) in which a single pipe portion with a protrusion having a protruding portion is provided.
That is, according to the drainage pipe device, when the drainage flowing down from the upper part is a large amount and at a high speed, the part other than the projection part falls as it is, but it flows down along the pipe wall of the vertical pipe and projects. The drainage that collides with the flow part flows down the inclined surface of the protruding part, leaves the inclined surface from the middle and collides with the facing wall surface, reduces the speed of the flowing water other than the protruding part, and the flowing speed of the whole flowing water In addition, since the opening of the horizontal branch pipe is prevented from being closed by the falling water film from the upper part of the vertical pipe, the pressure fluctuation in the horizontal branch pipe can be greatly suppressed.

しかしながら、上記の排水配管装置の場合、１０階以下の多層階建築物用としてはある程度その効果が期待できるかもしれないが、１０階以上ある昨今の高層マンション等の高層建築物の排水システムには用いることができない。   However, in the case of the above-mentioned drainage piping apparatus, the effect may be expected to some extent for a multi-storey building with 10 floors or less, but in the drainage system for high-rise buildings such as recent high-rise apartments with 10 floors or more Cannot be used.

特開２００１−３４１９号公報JP 2001-3419 A 特開２００５−２８２３３０号公報JP 2005-282330 A 特許３５６７４２７号公報Japanese Patent No. 3567427 特許第４１７４７９４号公報Japanese Patent No. 4174794

本発明は、上記事情に鑑みて、立管と横枝管との接続に用いられ、排水立管路を収容する配管スペースを必要最小限にすることができるとともに、１０階以上の高層建築物においても排水性能に優れた単管式排水システムを簡単に構築することができる排水管継手及びこの排水管継手を用いた排水構造を提供することを目的としている。   In view of the above circumstances, the present invention is used for connection between a vertical pipe and a horizontal branch pipe, and can minimize the piping space for accommodating a drainage vertical pipe, and can be a high-rise building having 10 floors or more. It aims at providing the drainage pipe joint which can construct | assemble the single pipe | tube type drainage system excellent in drainage performance easily, and the drainage structure using this drainage pipe joint.

上記目的を達成するために、本発明にかかる管継手は、接続される立管と略同じ内径をした筒状胴部を有し、筒状胴部上端に上部立管接続部を備える継手本体と、この継手本体の前記筒状胴部の側壁面に連設され、側壁面側で下方に湾曲する曲がり部を有する横枝管接続部とを備える排水管継手において、前記筒状胴部は、その内壁面に旋回羽根を備えるとともに、この旋回羽根の上端が横管路接続部に接続される横枝管の管底より上方に位置することを特徴としている。   In order to achieve the above object, a pipe joint according to the present invention has a cylindrical body portion having substantially the same inner diameter as a connected vertical pipe, and a joint body having an upper vertical pipe connection portion at the upper end of the cylindrical body portion. And a drainage pipe joint provided with a side branch pipe connection part having a bent part that is continuously provided on the side wall surface of the cylindrical body part of the joint body and curved downward on the side wall surface side. The swirl vane is provided on the inner wall surface, and the upper end of the swirl vane is located above the bottom of the horizontal branch pipe connected to the horizontal pipe line connecting portion.

本発明において、排水管継手の材質は、特に限定されないが、鋳物、塩化ビニル樹脂、ポリエチレン、ポリプロピレン等のオレフィン系樹脂などが挙げられる。
本発明の排水管継手は、旋回羽根の上端が横管路接続部に接続される横枝管の管底より上方に位置する必要がある、その理由は、旋回羽根の上端が横枝管の管底より横管路接続口の管底より下方に位置すると、横枝管からの排水の流入が多い場合、横枝管からの排水が旋回羽根によって跳ねあがり、立管路内を閉塞してしまうためである。
なお、横枝管の管底と旋回羽根の上端との高さの差は、特に限定されないが、最低５０ｍｍ以上が好ましい。すなわち、５０ｍｍを下回ると適正な大きさ（水平投影面積）の旋回羽根を付与しようとすると、旋回羽根の下端が横枝管の管底から大幅に下方まで設置されることになり、横枝管からの排水が旋回羽根によって跳ね上がり、立管路内を閉塞してしまうおそれがある。 In the present invention, the material of the drainage pipe joint is not particularly limited, and examples thereof include castings, olefin resins such as vinyl chloride resin, polyethylene, and polypropylene.
In the drainage pipe joint of the present invention, the upper end of the swirl vane needs to be located above the bottom of the horizontal branch pipe connected to the horizontal pipe connection part. If the drainage from the side branch pipe is much inflow, the drainage from the side branch pipe will be splashed by the swirling blades and closed in the vertical pipe. It is because it ends.
The difference in height between the bottom of the horizontal branch pipe and the upper end of the swirl blade is not particularly limited, but is preferably at least 50 mm. That is, if a swirl vane having an appropriate size (horizontal projection area) is to be provided below 50 mm, the lower end of the swirl vane will be installed from the bottom of the horizontal branch pipe to the lower side. There is a possibility that the drainage from the water will jump up by the swirl vanes and block the inside of the vertical pipe.

また、本発明の管継手おいて、旋回羽根は、その下端が接続される横枝管の管底より下方に位置することが好ましい。
すなわち、旋回羽根の下端が横枝管の管底より上方にあると、旋回羽根の下端と、旋回羽根の上端との高さの差が小さく、結果として旋回羽根の傾斜角（立管路の中心軸に対する）がきつくなってしまう（旋回羽根が寝て流下排水を受けやすくなる）。しかし、傾斜角がきつくなると、同じ水平投影面積の旋回羽根を設置した場合でも、緩い角度で設置された旋回羽根よりも旋回羽根そのものの面積は小さくなり、十分な旋回流を生じさせるのに、旋回羽根を筒状胴部内に大きく張り出す面積を大きなもの（水平投影面積が大きなもの）にせざるを得ない。一方、旋回羽根を筒状胴部内に大きく張り出す面積を大きなものすると、排水とともに落下する固形物の雑物が引っかったりして、立管路内を閉塞してしまうおそれがある。
また、旋回羽根の下端が横枝管の管底より大幅に下方に配置されると、横枝管からの排水が旋回羽根によって跳ね上がり、立管路内を閉塞してしまうおそれがある。
上記より、横枝管の管底から旋回羽根の下端までの垂直距離は、特に限定されないが、
１０〜８０ｍｍが好ましい。 In the pipe joint of the present invention, the swirl vane is preferably positioned below the bottom of the horizontal branch pipe to which the lower end is connected.
That is, when the lower end of the swirl vane is above the bottom of the horizontal branch pipe, the difference in height between the lower end of the swirl vane and the upper end of the swirl vane is small. (With respect to the central axis) becomes tight (the swirl vane sleeps and becomes easy to receive drainage). However, when the tilt angle becomes tight, even if swirling blades with the same horizontal projection area are installed, the swirling blade itself has a smaller area than the swirling blades installed at a loose angle, and a sufficient swirling flow is generated. The area over which the swirling blades are greatly extended into the cylindrical body portion must be large (the one with a large horizontal projection area). On the other hand, if the area where the swirling blades are greatly extended into the cylindrical body portion is increased, the solid matter falling along with the drainage may be caught and the inside of the vertical pipe may be blocked.
Moreover, if the lower end of the swirl vane is disposed significantly below the bottom of the horizontal branch pipe, the drainage from the horizontal branch pipe may jump up by the swirl vane and block the inside of the vertical pipe.
From the above, the vertical distance from the bottom of the side branch pipe to the lower end of the swirl blade is not particularly limited,
10-80 mm is preferable.

なお、旋回羽根の大きさは、排水とともに落下する固形物の雑物が引っかからず、排水に十分な旋回流を与えることができれば、特に限定されないが、旋回羽根の筒状胴部の管軸に直交する面への投影面積が、立管の内部横断面積に対して５％〜３０％の大きさであることが好ましい。
すなわち、旋回羽根の投影面積が立管の内部横断面積に対して５％を下回ると、旋回羽根によって上方から流下する排水を十分な旋回流とすることができないおそれがあり、３０％を超えると排水に混ざって落下する固形物がひっかかり立管路が閉塞するおそれがある。 The size of the swirl vane is not particularly limited as long as it does not catch solid waste that falls with the drainage and can provide a sufficient swirl flow to the drainage, but it is not limited to the tube axis of the cylindrical body of the swirl vane. It is preferable that the projected area onto the orthogonal plane is 5% to 30% relative to the internal cross-sectional area of the vertical pipe.
That is, if the projected area of the swirl vane is less than 5% with respect to the internal cross-sectional area of the vertical pipe, there is a possibility that the drainage flowing down from above by the swirl vane cannot be made a sufficient swirl flow. There is a possibility that the standing pipe will be blocked due to the solid matter falling in the drainage.

一方、旋回羽根の傾斜角（立管路の中心軸に対する）は、排水に十分な旋回流を与えることができれば、特に限定されないが、筒状胴部の管軸に対して２０°〜５０°であることが好ましい。
すなわち、旋回羽根の傾斜角が２０°を下回ると、旋回羽根によって上方から流下する排水を十分な旋回流とすることができないおそれがあり、５０°を超えると排水に混ざって落下する固形物がひっかかり立管路が閉塞するおそれがある。 On the other hand, the inclination angle of the swirl vane (relative to the central axis of the vertical pipe line) is not particularly limited as long as it can give a sufficient swirling flow to the drainage, but it is 20 ° to 50 ° with respect to the tube axis of the cylindrical trunk. It is preferable that
That is, if the angle of inclination of the swirl vane is less than 20 °, there is a possibility that the drainage flowing down from above by the swirl vane may not be a sufficient swirl flow. There is a risk that the standing pipe will be blocked.

また、旋回羽根の形状は、特に限定されないが、例えば、排水受け面が、円弧の両端を結ぶ直線状の弦を備えたような形状が挙げられる。   Further, the shape of the swirl vane is not particularly limited, and for example, a shape in which the drainage receiving surface is provided with a straight string connecting both ends of the arc is mentioned.

本発明にかかる排水構造は、上記本発明の排水管継手が立管と横枝管の接続部に、筒状胴部が排水立管路を構成するように組み込まれていることを特徴としている。   The drainage structure according to the present invention is characterized in that the drainage pipe joint according to the present invention is incorporated in the connecting portion between the vertical pipe and the lateral branch pipe so that the cylindrical trunk portion constitutes the drainage vertical pipe. .

本発明にかかる排水管継手は、接続される立管と略同じ内径をした筒状胴部を有し、筒状胴部上端に上部立管接続部を備える継手本体と、この継手本体の前記筒状胴部の側壁面に連設され、筒状胴部に向かって下方に湾曲する曲がり部を有する横枝管接続部とを備える排水管継手において、前記筒状胴部がその内壁面に旋回羽根を備えるとともに、この旋回羽根の上端が横管路接続部に接続される横枝管の管底より上方に位置するので、立管と横枝管との接続に用いれば、排水立管路を収容する配管スペースを必要最小限にすることができるとともに、１０階以上の高層建築物においても排水性能に優れた単管式排水システムを簡単に構築することができる。
そして、本発明にかかる排水構造は、上記排水管継手が立管と横枝管の接続部に、筒状胴部が排水立管路を構成するように組み込まれているので、排水立管路の配管スペースを小さくできて建築物の居住空間を広くすることができる。 The drainage pipe joint according to the present invention has a cylindrical body portion having substantially the same inner diameter as a connected vertical pipe, and has a joint body provided with an upper vertical pipe connection portion at the upper end of the cylindrical body part, A drainage pipe joint provided with a side branch pipe connecting part having a bent part that is continuously provided on a side wall surface of the cylindrical body part and curves downward toward the cylindrical body part, wherein the cylindrical body part is formed on an inner wall surface thereof. Since the swirl vane is provided and the upper end of the swirl vane is located above the bottom of the horizontal branch pipe connected to the horizontal pipe connection portion, the drainage vertical pipe can be used for connection between the vertical pipe and the horizontal branch pipe. The piping space for accommodating the road can be minimized, and a single-pipe drainage system having excellent drainage performance can be easily constructed even in a high-rise building having 10 floors or more.
In the drainage structure according to the present invention, the drainage pipe joint is incorporated in the connecting portion between the vertical pipe and the side branch pipe so that the cylindrical body portion constitutes the drainage vertical pipe. The piping space can be made smaller and the living space of the building can be made wider.

本発明にかかる排水管継手の第１の実施の形態をあらわす正面図である。It is a front view showing 1st Embodiment of the drain pipe joint concerning this invention. 図１の排水管継手を正面からみた断面図である。It is sectional drawing which looked at the drain pipe joint of FIG. 1 from the front. 図１の排水管継手の右側面図である。It is a right view of the drain pipe joint of FIG. 図１の排水管継手の平面図である。It is a top view of the drain pipe joint of FIG. 図１の排水管継手の底面図である。It is a bottom view of the drain pipe joint of FIG. 図１の排水管継手の旋回羽根の位置を説明する模式図である。It is a schematic diagram explaining the position of the turning blade | wing of the drainage pipe coupling of FIG. 図１の排水管継手を組み込んだ本発明の排水構造の要部断面図である。It is principal part sectional drawing of the drainage structure of this invention incorporating the drainage pipe coupling of FIG. 図７に示す排水構造の、施工途中の状態を示し、図１の排水管継手に立管用のゴム輪パッキンを装着した状態の断面図である。FIG. 8 is a cross-sectional view of the drainage structure shown in FIG. 7 in the middle of construction, with the rubber ring packing for standing pipes attached to the drainage pipe joint of FIG. 1. 図７に示す排水構造の、施工途中の状態を示し、図８の排水管継手に横枝管用のゴム輪パッキン及びパッキン固定キャップを装着した状態の断面図である。FIG. 9 is a cross-sectional view of the drainage structure shown in FIG. 7 in the middle of construction, with the rubber ring packing for the side branch pipe and the packing fixing cap attached to the drainage pipe joint of FIG. 8. 本発明にかかる排水管継手の第２の実施の形態をあらわし、その正面図である。It is a front view showing a second embodiment of a drainage pipe joint according to the present invention. 本発明にかかる排水管継手の第３の実施の形態をあらわし、その正面図である。It shows the 3rd Embodiment of the drain pipe joint concerning this invention, and is the front view. 本発明にかかる排水管継手の第４の実施の形態をあらわし、その正面図である。FIG. 7 is a front view showing a fourth embodiment of a drainage pipe joint according to the present invention. 本発明にかかる排水管継手の第５の実施の形態をあらわし、その正面図である。It shows the 5th Embodiment of the drain pipe joint concerning this invention, and is the front view. 実施例で用いた実験排水立管路の概略説明図である。It is a schematic explanatory drawing of the experimental drainage vertical line used in the Example. 比較例１で用いた管継手の断面図である。6 is a cross-sectional view of a pipe joint used in Comparative Example 1. FIG. 比較例２で用いた管継手の正面図である。6 is a front view of a pipe joint used in Comparative Example 2. FIG.

以下に、本発明を、その実施の形態をあらわす図面を参照しつつ詳しく説明する。
図１〜図５は、本発明にかかる排水管継手の第１の実施の形態をあらわしている。 Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof.
1 to 5 show a first embodiment of a drain pipe joint according to the present invention.

図１〜図５に示すように、この排水管継手１ａは、継手本体２ａと、横枝管接続部３ａとを備えていて、鋳物により形成されている。
継手本体２ａは、筒状胴部２１と、上部立管接続部２２と、下部立管接続部２３と、を備えている。 As shown in FIGS. 1-5, this drain pipe joint 1a is provided with the joint main body 2a and the side branch pipe connection part 3a, and is formed by casting.
The joint main body 2 a includes a cylindrical trunk portion 21, an upper vertical pipe connection portion 22, and a lower vertical pipe connection portion 23.

筒状胴部２１は、後述する立管７ａの内径と略同じ内径をしていて、内壁面に１枚の旋回羽根２４が突設されている。
旋回羽根２４は、図２に示すように、その上端２４ａが横枝管接続部３ａに接続される横枝管（図２では記載されていない）の鎖線で示す管底位置Ｌより８０ｃｍ上方に位置し、その下端２４ｂが上記管底位置Ｌより４０ｃｍ下方に位置するように設けられている。
また、旋回羽根２４は、筒状胴部２１の管軸に対して２０°〜５０°の角度に傾斜して設けられているとともに、旋回羽根２４の投影面積が立管７ａの内部横断面積に対して５％〜３０％の大きさをしている。
さらに、旋回羽根２４は、図６に示すように、筒状胴部２１の中心Ｏ（立管７ａの中心と一致）から旋回羽根２４の投影形状の弦への垂線Ｌ１と、横枝管（図６では記載されていない）の中心軸に平行な線分Ｌ２とがなす角度θが、線分Ｌ２から反時計回りに４５°となる位置に設けられている。 The cylindrical body portion 21 has an inner diameter that is substantially the same as the inner diameter of a standpipe 7a described later, and one swirl vane 24 projects from the inner wall surface.
As shown in FIG. 2, the swirl blade 24 has an upper end 24a that is 80 cm above the tube bottom position L indicated by a chain line of a side branch pipe (not shown in FIG. 2) connected to the side branch pipe connection portion 3a. The lower end 24b is located 40 cm below the tube bottom position L.
Further, the swirl vane 24 is provided to be inclined at an angle of 20 ° to 50 ° with respect to the tube axis of the cylindrical body portion 21, and the projected area of the swirl vane 24 is equal to the internal transverse area of the vertical tube 7 a. On the other hand, the size is 5% to 30%.
Further, as shown in FIG. 6, the swirl vane 24 has a perpendicular line L1 from the center O of the cylindrical body 21 (coincident with the center of the vertical tube 7a) to the string of the projected shape of the swirl vane 24, and a horizontal branch pipe ( The angle θ formed by the line segment L2 parallel to the central axis (not shown in FIG. 6) is provided at a position that is 45 ° counterclockwise from the line segment L2.

上部立管接続部２２は、図２に示すように、後述する立管の下端が水密に嵌合されるエチレン−プロピレン−ジエンゴム（EPDM）等の通常排水設備に使用されているゴム材料からなるリップ４１付きのセルフシール型ゴム輪パッキン４ａが内嵌されるようになっているとともに、立管７ａの挿入孔２２ａを有するゴム輪パッキン４ａの抜け止め部２２ｂを上端に備えている。   As shown in FIG. 2, the upper vertical pipe connecting portion 22 is made of a rubber material used in normal drainage equipment such as ethylene-propylene-diene rubber (EPDM) in which the lower end of the vertical pipe described later is fitted in a watertight manner. A self-sealing rubber ring packing 4a with a lip 41 is fitted inside, and a stopper 22b of the rubber ring packing 4a having an insertion hole 22a for the upright pipe 7a is provided at the upper end.

下部立管接続部２３は、立管７ａの上端が挿入可能な受口部２３ａと、ボルト挿通孔２３ｂを備えたフランジ２３ｃとを備えている。
受口部２３ａは、図7に示すように、その下端が、シール用のＯリング状をしたゴムパッキン４ｂの上部が嵌り込むように拡径している。 The lower vertical pipe connection part 23 includes a receiving part 23a into which the upper end of the vertical pipe 7a can be inserted, and a flange 23c provided with a bolt insertion hole 23b.
As shown in FIG. 7, the lower end of the receiving portion 23a is expanded so that the upper portion of the rubber packing 4b having an O-ring shape for sealing fits.

横枝管接続部３ａは、筒状胴部２１の側壁面に連設され、側壁面側で下方に湾曲する曲がり部３１と、曲がり部３１の横枝管７ｂ側に設けられた横枝管接続口３２とを備えている。
横枝管接続口３２は、後で詳述する横枝管用のリップ部５２ａ付きセルフシール型ゴム輪パッキン（以下、「横枝管用ゴム輪パッキン」と記す）５ａの嵌合部５１を収容可能となっているとともに、横枝管用ゴム輪パッキン４ａの離脱防止用のパッキン固定キャップ５ｂがボルト止めされるねじ孔３２ａを備えたフランジ３２ｂを備えている。 The side branch pipe connecting part 3a is connected to the side wall surface of the cylindrical body part 21, and is bent at the side wall side and is bent downward, and the side branch pipe provided at the side branch pipe 7b side of the bent part 31. And a connection port 32.
The side branch pipe connection port 32 can accommodate a fitting part 51 of a self-sealing type rubber ring packing (hereinafter referred to as “rubber ring packing for side branch pipe”) 5a with a lip part 52a for a side branch pipe, which will be described in detail later. And a flange 32b having a screw hole 32a to which a packing fixing cap 5b for preventing the horizontal branch pipe rubber ring packing 4a from being detached is bolted.

この排水管継手１ａは、上記のようになっており、以下のようにして図７に示す本発明の排水構造Ａを得ることができる。
すなわち、この排水構造Ａは、まず、図８に示すように、排水管継手１ａの上部立管接続部２２にゴム輪パッキン４ａを嵌合装着させておく。ゴム輪パッキン４ａの排水管継手１ａへの装着は、施工現場で行ってもよいが、通常、工場出荷前に装着しておくことが好ましい。 This drain pipe joint 1a is as described above, and the drainage structure A of the present invention shown in FIG. 7 can be obtained as follows.
That is, in the drainage structure A, first, as shown in FIG. 8, the rubber ring packing 4a is fitted and attached to the upper vertical pipe connection portion 22 of the drainage pipe joint 1a. Although the rubber ring packing 4a may be attached to the drain pipe joint 1a at the construction site, it is usually preferable to attach it before the factory shipment.

まず、上記のようにゴム輪パッキン４ａが装着された排水管継手１ａを用いて以下のようにして排水立管路Ｐが形成される。
すなわち、図７に示すように、施工が完了した下の階から施工階のスラブ９の貫通孔９１を貫通してスラブ９上に延出した下側の階の立管７ａの上端部に、締め付けリング４１及びＯリング状のゴムパッキン４ｂを嵌合した状態で、下部立管接続部２３の受口部２３ａ内に立管７ａの上端部が嵌り込むように、排水管継手１ａをスラブ９の上方からセットする。 First, the drainage conduit P is formed as follows using the drainage pipe joint 1a to which the rubber ring packing 4a is mounted as described above.
That is, as shown in FIG. 7, from the lower floor where the construction is completed, through the through hole 91 of the slab 9 of the construction floor and extending onto the slab 9, on the upper end portion of the vertical pipe 7a on the lower floor, In a state where the fastening ring 41 and the O-ring-shaped rubber packing 4b are fitted, the drain pipe joint 1a is connected to the slab 9 so that the upper end portion of the vertical pipe 7a is fitted into the receiving portion 23a of the lower vertical pipe connection portion 23. Set from above.

そして、フランジ２３ｃのボルト挿通孔２３ｂと、締め付けリング４１のボルト挿通孔４１ａとを一致させて、両ボルト挿通孔２３ｂ、４１ａを貫通したボルト４２の先端部に締め付けリング４１とフランジ２３ｃとが略密着するまでナット４３をねじ込む。
このねじ込みによって、ゴムパッキン４ｂが締め付けリング４１とフランジ２３ｃとによって厚み方向に圧縮され、立管７ａの外周面を締め付け、立管７ａの上端を継手本体２ａの下端を水密に固定する。 Then, the bolt insertion hole 23b of the flange 23c and the bolt insertion hole 41a of the tightening ring 41 are made to coincide with each other, and the tightening ring 41 and the flange 23c are substantially at the tip of the bolt 42 that penetrates both the bolt insertion holes 23b and 41a. Screw the nut 43 until it is in close contact.
By this screwing, the rubber packing 4b is compressed in the thickness direction by the tightening ring 41 and the flange 23c, tightening the outer peripheral surface of the vertical pipe 7a, and fixing the upper end of the vertical pipe 7a to the lower end of the joint body 2a in a watertight manner.

一方、施工階の立管７ａは、このように継手本体２ａの下端が固定されたのち、図示していないが、さらに、１つ上の階のスラブ９の貫通孔９１に施工しようとする立管７ａの上端部を臨ませて、立管７ａの下端が上部立管接続部２２の上端より高くなるように持ち上げる。
そののち、立管７ａの下端を上部立管接続部２２の内部を臨むように配置し、略垂直に立管７ａを押し下げることによって、立管７ａの下端部をゴム輪パッキン４ａに嵌合させて、立管７ａの下端を上部立管接続部２２に水密に接続する。
すなわち、立管７ａの下端部がゴム輪パッキン４ａ内に嵌合されることによって、リップ部４１が立管７ａの外周面に密着してセルフシールされ、ワンタッチで上部立管接続部２２に接続される。 On the other hand, the standing pipe 7a on the construction floor is not shown in the figure after the lower end of the joint body 2a is fixed in this way, but the standing pipe to be constructed in the through hole 91 of the slab 9 on the floor one level higher. The upper end of the pipe 7a is faced and lifted so that the lower end of the vertical pipe 7a is higher than the upper end of the upper vertical pipe connecting portion 22.
After that, the lower end of the vertical pipe 7a is disposed so as to face the inside of the upper vertical pipe connection portion 22, and the vertical pipe 7a is pushed down substantially vertically so that the lower end of the vertical pipe 7a is fitted to the rubber ring packing 4a. Then, the lower end of the vertical pipe 7a is connected to the upper vertical pipe connection portion 22 in a watertight manner.
That is, when the lower end portion of the vertical pipe 7a is fitted into the rubber ring packing 4a, the lip portion 41 is in close contact with the outer peripheral surface of the vertical pipe 7a and is self-sealed, and is connected to the upper vertical pipe connection portion 22 with one touch. Is done.

そして、排水立管路Ａは、上記の作業を上層階に向かって繰り返し行うことによって排水立管路Ｐが形成される。
また、貫通孔９１は、上記のように排水管継手１ａの施工が完了すると、モルタル９２が充填されて封止される。 And as for drainage drainage pipe A, drainage drainage pipe P is formed by performing said operation | work repeatedly toward an upper floor.
Further, the through-hole 91 is filled and sealed with the mortar 92 when the construction of the drain pipe joint 1a is completed as described above.

つぎに、例えば、呼び径５０Ａの横枝管７ｂを、各階に配置された上記排水管継手１ａの横枝管接続部３ａに接続する方法を説明する。
横枝管接続部３ａへの横枝管７ｂの接続に当たっては、まず、図７及び図９に示すように、横枝管接続部３ａの横枝管接続口３２に、接続される横枝管７ｂに適合する以下のような横枝管用ゴム輪パッキン５ａ及びパッキン固定キャップ５ｂを装着する。 Next, for example, a method of connecting the side branch pipe 7b having a nominal diameter of 50A to the side branch pipe connecting portion 3a of the drain pipe joint 1a arranged on each floor will be described.
When connecting the side branch pipe 7b to the side branch pipe connection portion 3a, first, as shown in FIGS. 7 and 9, the side branch pipe connected to the side branch pipe connection port 32 of the side branch pipe connection portion 3a. The rubber ring packing 5a for the side branch pipe and the packing fixing cap 5b, which conform to 7b, are attached as follows.

横枝管用ゴム輪パッキン５ａは、嵌合部５１と、リップ形成筒部５２と、挟着部５３と、リップ形成筒部５２を備えている。
嵌合部５１は、外周面が横枝管接続口３２に内嵌される大きさをしていて、横枝管嵌合孔５１ａが穿設されている。 The horizontal branch pipe rubber ring packing 5 a includes a fitting part 51, a lip forming cylinder part 52, a sandwiching part 53, and a lip forming cylinder part 52.
The fitting portion 51 has a size such that the outer peripheral surface is fitted in the side branch pipe connection port 32, and a side branch pipe fitting hole 51a is formed.

横枝管嵌合孔５１ａは、横枝管接続口３２の中心軸から偏芯して接続される横枝管７ｂの外径と略同じ内径をしていて、曲がり部３１側の端部に、接続される横枝管７ｂの内径と略同じ内径をしたリング状をした管端係止部５１ｂを備えている。
リップ形成筒部５２は、上記横枝管嵌合孔５１ａと同心で嵌合部５１と逆方向に延出する、接続される横枝管７ｂの外径より少し大きな内径をしていて、リップ部５２ａを備えている。 The side branch pipe fitting hole 51a has an inner diameter that is substantially the same as the outer diameter of the side branch pipe 7b that is eccentrically connected from the central axis of the side branch pipe connection port 32, and is formed at the end on the bent portion 31 side. A ring-shaped tube end locking portion 51b having an inner diameter substantially the same as the inner diameter of the horizontal branch pipe 7b to be connected is provided.
The lip forming tube portion 52 is concentric with the side branch tube fitting hole 51a and extends in the opposite direction to the fitting portion 51, and has an inner diameter slightly larger than the outer diameter of the connected side branch tube 7b. A portion 52a is provided.

挟着部５３は、嵌合部５１のリップ形成筒部５２側の端部から外側に張り出すように設けられていて、その外形が横枝管接続部３ａのフランジ３２ｂの外形と略同じ形をしていて、フランジ３２ｂのねじ孔３２ａに対応する位置にボルト挿通孔５３ａが穿設されている。
パッキン固定キャップ５ｂは、フランジ部５４と、キャップ本体部５５とを備えている。 The sandwiching portion 53 is provided so as to protrude outward from the end portion of the fitting portion 51 on the lip forming tube portion 52 side, and the outer shape thereof is substantially the same as the outer shape of the flange 32b of the lateral branch pipe connecting portion 3a. A bolt insertion hole 53a is formed at a position corresponding to the screw hole 32a of the flange 32b.
The packing fixing cap 5 b includes a flange portion 54 and a cap main body portion 55.

フランジ部５４は、ねじ孔３２ａに対応する位置にボルト挿通孔５４ａが穿設されていて、その外形がフランジ３２ｂの外形と略同じ形をしている。
キャップ本体部５５は、リップ形成筒部５２が内嵌される筒状になっていて、接続される横枝管７ｂの外径より少し大きな内径をした横枝管挿通孔５５ａを備えている。 The flange portion 54 has a bolt insertion hole 54a formed at a position corresponding to the screw hole 32a, and the outer shape thereof is substantially the same as the outer shape of the flange 32b.
The cap main body portion 55 has a cylindrical shape in which the lip forming cylindrical portion 52 is fitted, and includes a side branch pipe insertion hole 55a having an inner diameter slightly larger than the outer diameter of the connected side branch pipe 7b.

そして、この横枝管用ゴム輪パッキン５ａ及びパッキン固定キャップ５ｂは、まず、嵌合部５１を横枝管嵌合孔５１ａの軸芯が横枝管接続口３２の最も下側に位置するように横枝管接続口３２に嵌合させる。つぎに、キャップ本体部５５内にリップ形成筒部５２が内嵌されるようにパッキン固定キャップ５ｂを装着し、図８及び図９に示すように、セットボルト５６をパッキン固定キャップ５ｂのボルト挿通孔５４ａ及び挟着部５３のねじ挿通孔５３ａを介してフランジ３２ｂのねじ孔３２ａに螺合することによって、挟着部５３がフランジ３２ｂとフランジ部５４との間に挟着された状態で排水管継手１ａに装着一体化される。   Then, the rubber ring packing 5a and the packing fixing cap 5b for the side branch pipe are first arranged so that the axis of the side branch pipe fitting hole 51a is positioned at the lowest side of the side branch pipe connection port 32. The horizontal branch pipe connection port 32 is fitted. Next, the packing fixing cap 5b is mounted so that the lip forming cylinder portion 52 is fitted inside the cap main body portion 55, and the set bolt 56 is inserted into the bolt of the packing fixing cap 5b as shown in FIGS. The drainage is performed in a state where the sandwiched portion 53 is sandwiched between the flange 32b and the flange portion 54 by being screwed into the screw hole 32a of the flange 32b via the hole 54a and the screw insertion hole 53a of the sandwiched portion 53. It is mounted and integrated with the pipe joint 1a.

なお、横枝管用ゴム輪パッキン５ａ及びパッキン固定キャップ５ｂの排水管継手１ａへの装着作業は、工場出荷段階で行っても、施工現場で行っても構わない。   Note that the mounting operation of the horizontal branch pipe rubber ring packing 5a and the packing fixing cap 5b to the drain pipe joint 1a may be performed at the factory shipment stage or at the construction site.

横枝管７ｂは、その一端部を、図７に示すように、このように装着されたパッキン固定キャップ５ｂの横枝管挿通孔５５ａを介してリップ形成筒部５２から横枝管嵌合孔５１ａ内に挿入嵌合されることによって、リップ部５２ａが横枝管７ｂの外周面に密着してセルフシールされ、ワンタッチで横枝管接続部３ａに接続される。このような接続状態で横枝管７の管底７１は、旋回羽根２４の上端２４ａより下方で、旋回羽根２４の下端２４ｂより上方に位置するようになる。
また、横枝管７ｂの他端には、図示していないが、トイレ、浴槽、キッチン、洗面所等の機器に接続される。 As shown in FIG. 7, the side branch pipe 7 b has one end thereof, as shown in FIG. 7, from the lip forming tube portion 52 through the side branch pipe insertion hole 55 a of the packing fixing cap 5 b thus mounted. By being inserted and fitted into 51a, the lip portion 52a is in close contact with the outer peripheral surface of the side branch pipe 7b and self-sealed, and is connected to the side branch pipe connecting portion 3a with one touch. In such a connected state, the tube bottom 71 of the lateral branch tube 7 is positioned below the upper end 24 a of the swirl vane 24 and above the lower end 24 b of the swirl vane 24.
Moreover, although not shown in figure, it connects to apparatuses, such as a toilet, a bathtub, a kitchen, and a washroom, at the other end of the horizontal branch pipe 7b.

ところで、上記では、呼び径５０Ａの横枝管７ｂを接続する場合しか述べていないが、この排水管継手１ａには、図示していないが、上記５０Ａ用に代えて、呼び径８０Ａ用の横枝管用ゴム輪パッキン及びパッキン固定キャップ、あるいは、呼び径６５Ａ用の横枝管用ゴム輪パッキン及びパッキン固定キャップを横枝管接続部３ａに装着すれば、呼び径８０Ａの横枝管及び呼び径６５Ａの横枝管も上記と同様にしてワンタッチで横枝管接続部３ａに接続できるようになる。
なお、呼び径８０Ａ用の横枝管用ゴム輪パッキンは、装着状態で横枝管嵌合孔及びリップ形成筒部の中心軸が横枝管接続口３２の中心軸と一致するようになっていて、呼び径６５Ａ用の横枝管用ゴム輪パッキンは、装着状態で横枝管嵌合孔及びリップ形成筒部の中心軸が横枝管接続口の中心軸より鉛直下方にずれた位置となるように偏芯されていて、横枝管を接続した状態で横枝管の管底７１が上記５０Ａの横枝管７ｂの管底７１と一致するようになっている。したがって、いずれの管径の横枝管を接続しても、横枝管７の管底７１は、旋回羽根２４の上端２４ａより下方で、旋回羽根２４の下端２４ｂより上方に位置するようになる。 In the above description, only the case where the horizontal branch pipe 7b having a nominal diameter of 50A is connected is described. However, the drain pipe joint 1a is not shown in the figure, but instead of the 50A, a horizontal pipe for the nominal diameter 80A is used. If the rubber ring packing for the branch pipe and the packing fixing cap, or the rubber ring packing for the side branch pipe and the packing fixing cap for the nominal diameter 65A are attached to the side branch pipe connecting portion 3a, the side branch pipe and the nominal diameter 65A having the nominal diameter of 80A. The horizontal branch pipe can be connected to the horizontal branch pipe connecting portion 3a by one touch in the same manner as described above.
In addition, the rubber ring packing for the side branch pipe for the nominal diameter 80A is configured such that the central axis of the side branch pipe fitting hole and the lip forming cylinder portion coincides with the central axis of the side branch pipe connection port 32 in the mounted state. In the mounted state, the rubber ring packing for the side branch pipe for the nominal diameter 65A is positioned so that the center axis of the side branch pipe fitting hole and the lip forming cylinder portion is shifted vertically below the center axis of the side branch pipe connection port. The tube bottom 71 of the side branch tube is aligned with the tube bottom 71 of the side branch tube 7b of the 50A in a state where the side branch tube is connected. Therefore, regardless of which side branch pipe of any pipe diameter is connected, the bottom 71 of the side branch pipe 7 is positioned below the upper end 24a of the swirl vane 24 and above the lower end 24b of the swirl vane 24. .

このようにして得られる上記排水構造Ａによれば、排水管継手１ａの継手本体２ａ内に旋回羽根２４が設けられているので、上方の立管７ａから流下してきた排水が排水管継手１ａの筒状胴部２１内に流れ込むと、旋回羽根２４に受けられて旋回流となって、下方の立管７ａの管壁に沿うように流下する。
したがって、高層マンション等の高層建築物においても、常に排水立管路Ｐ内に空気芯が形成され、高い排水能力の排水立管路Ｐとすることができる。 According to the drainage structure A thus obtained, the swirl vanes 24 are provided in the joint main body 2a of the drainage pipe joint 1a, so that the drainage flowing down from the upper vertical pipe 7a is discharged from the drainage pipe joint 1a. When it flows into the cylindrical body portion 21, it is received by the swirl vanes 24 to form a swirl flow, and flows down along the tube wall of the lower vertical tube 7a.
Accordingly, even in a high-rise building such as a high-rise apartment, an air core is always formed in the drainage conduit P, and the drainage conduit P having a high drainage capacity can be obtained.

しかも、筒状胴部２１が立管７ａと略同じ内径をしているので、継手本体２ａが立管７ａの外径と殆ど変わらない大きさとなり、排水立管路を収容する配管スペースを必要最小限にすることができる。したがって、建築物の居住空間を広くすることができる。
また、横枝管接続部３ａが筒状胴部２１側に向かって下方に湾曲する曲がり部３１を備えているので、横枝管接続部３ａから継手本体２ａ側に流入する排水は、曲がり部３１によって下方に導かれるとともに、旋回羽根２４の上端２４ａが横枝管７ｂの管底７１より上方に配置されているので、横枝管７ｂからの排水の流入が多い場合でも、横枝管７ｂからの排水が旋回羽根２４によって跳ね上がり、旋回流を乱して排水立管路Ｐ内を閉塞してしまうという問題がない。
さらに、横枝管接続部３ａが筒状胴部２１側に向かって下方に湾曲する曲がり部３１を備えているので、上方の立管７ａから多量の排水が流下してきても、排水が横枝管７ｂ側に逆流することがない。 Moreover, since the cylindrical body 21 has substantially the same inner diameter as the vertical pipe 7a, the joint body 2a has a size that is almost the same as the outer diameter of the vertical pipe 7a, and a piping space for accommodating the drainage vertical pipe is required. Can be minimized. Therefore, the living space of the building can be widened.
Moreover, since the side branch pipe connection part 3a is equipped with the bending part 31 which curves below toward the cylindrical trunk | drum 21 side, the waste_water | drain which flows into the coupling main body 2a side from the side branch pipe connection part 3a is a bending part. 31 and the upper end 24a of the swirl vane 24 is disposed above the tube bottom 71 of the horizontal branch pipe 7b. Therefore, even when there is a large inflow of drainage from the horizontal branch pipe 7b, the horizontal branch pipe 7b There is no problem that the drainage from the water jumps up by the swirl vanes 24, disturbs the swirling flow, and closes the drainage conduit P.
Furthermore, since the side branch pipe connecting portion 3a includes the bent portion 31 that curves downward toward the cylindrical body portion 21, the drainage is not changed even if a large amount of drainage flows from the upper vertical pipe 7a. There is no backflow to the tube 7b side.

図１０は、本発明の排水管継手の第２の実施の形態をあらわしている。
図１０に示すように、この排水管継手１ｂは、継手本体２ｂの筒状胴部２１の横枝管接続部３ａより下側の部分がスラブの厚みより長くなっている以外は、上記第１の実施の形態の管継手１ａと同様になっている。 FIG. 10 shows a second embodiment of the drain pipe joint of the present invention.
As shown in FIG. 10, this drain pipe joint 1b has the above-mentioned first structure except that the lower part of the tubular trunk 21 of the joint body 2b from the side branch pipe connection part 3a is longer than the thickness of the slab. It is the same as that of the pipe joint 1a of the embodiment.

図１１は、本発明の排水管継手の第３の実施の形態をあらわしている。
図１１に示すように、この排水管継手１ｃは、横枝管接続部３ｂが上記管継手１ｂの横枝管接続部３ａの横枝管接続口３２に代えて、上部立管接続部２２と同じゴム輪ワンタッチ接続構造の横枝管接続口３３が設けられている以外は、上記第２の実施の形態の管継手１ｂと同様になっている。 FIG. 11 shows a third embodiment of the drain pipe joint of the present invention.
As shown in FIG. 11, in this drain pipe joint 1c, the side branch pipe connection part 3b is replaced with the upper side pipe connection part 22 instead of the side branch pipe connection port 32 of the side branch pipe connection part 3a of the pipe joint 1b. It is the same as the pipe joint 1b of the said 2nd Embodiment except the horizontal branch pipe connection port 33 of the same rubber ring one-touch connection structure being provided.

図１２は、本発明の排水管継手の第４の実施の形態をあらわしている。
図１２に示すように、この排水管継手１ｄは、継手本体２ｃの下部立管接続部２５が差口構造となっている以外は、上記第１の実施の形態の管継手１ａと同様になっている。 FIG. 12 shows a fourth embodiment of the drain pipe joint of the present invention.
As shown in FIG. 12, the drainage pipe joint 1d is the same as the pipe joint 1a of the first embodiment except that the lower vertical pipe connection portion 25 of the joint body 2c has a gage structure. ing.

図１３は、本発明の排水管継手の第５の実施の形態をあらわしている。
図１３に示すように、この排水管継手１ｅは、継手本体２ｄの筒状胴部２１の横枝管接続部３ａより下側の部分がスラブ９の厚みより長くなっているとともに、下部立管接続部２５が差口構造となっている以外は、上記第１の実施の形態の管継手１ａと同様になっている。 FIG. 13 shows a fifth embodiment of the drain pipe joint of the present invention.
As shown in FIG. 13, in this drain pipe joint 1e, the lower part of the tubular main body 21 of the joint body 2d below the side branch pipe connection part 3a is longer than the thickness of the slab 9, and the lower vertical pipe Except for the connecting portion 25 having a differential structure, it is the same as the pipe joint 1a of the first embodiment.

以下に、本発明の実施例を詳しく説明する。   Examples of the present invention will be described in detail below.

（実施例１〜１３）
図１４に示すように、立管７ａとして１００Ａの塩化ビニル樹脂管（ＤＶ）と、横主管７ｃとして１５０Ａの塩化ビニル樹脂管（ＤＶ）と、横主管７ｃと最下階の立管７ａとを接続する１００Ａ／１５０Ａの特殊脚部継手７ｄと、旋回羽根２４が表１に示す水平投影面積、傾斜角度、横枝管の管底から上端位置、横枝管の管底からの下端位置である上記第1の実施の形態の管継手１ａと同じ構成の管継手とを用いて、マンション１７階相当の実験排水立管路Ｐを形成した。
そして、この実験排水立管路Ｐの１７階相当部分から２．５Ｌ／Ｓで排水を流下させた場合、１６階相当部分から２．０Ｌ／Ｓで排水を流下させた場合のそれぞれについて、２階相当の排水管継手１ａの継手本体２a内での管内最大発生負圧を排水能力試験法（SHASE-218）に基づいて測定するとともに、１Ｌ／Ｓの排水とともに各雑物を最上階から投入し、雑物のつまりの有無を調べ、その結果を表１に併せて示した。 (Examples 1 to 13)
As shown in FIG. 14, a 100A vinyl chloride resin pipe (DV) as a vertical pipe 7a, a 150A vinyl chloride resin pipe (DV) as a horizontal main pipe 7c, a horizontal main pipe 7c, and a vertical pipe 7a on the lowest floor. The 100A / 150A special leg joint 7d to be connected and the swirl vane 24 have the horizontal projection area, the inclination angle, the upper end position from the bottom of the side branch pipe, and the lower end position from the bottom of the side branch pipe shown in Table 1. An experimental drainage conduit P equivalent to the 17th floor of an apartment was formed using the pipe joint having the same configuration as the pipe joint 1a of the first embodiment.
And when drainage is made to flow down at 2.5 L / S from the portion corresponding to the 17th floor of this experimental drainage vertical pipe P, each case where drainage is made to flow down at 2.0 L / S from the portion corresponding to the 16th floor is 2 The maximum negative pressure generated in the pipe body 2a of the drainage pipe joint 1a equivalent to the floor is measured based on the drainage capacity test method (SHASE-218), and each miscellaneous substance is introduced from the top floor together with 1L / S drainage. Then, the presence or absence of clogs was examined, and the results are also shown in Table 1.

（比較例１）
上記実施例の管継手に代えて、図１５に示すように、旋回羽根を備えていない以外は上記実施例と同様のＤＶ―ＬＴタイプの管継手１００を用いた以外は実施例と同様にして排水立管路Ｐを形成し、管内最大発生負圧及び雑物のつまりの有無を調べ、その結果を表１に併せて示した。 (Comparative Example 1)
Instead of the pipe joint of the above embodiment, as shown in FIG. 15, except that a DV-LT type pipe joint 100 similar to the above embodiment is used except that the swirl vane is not provided, the same as in the embodiment. The drainage pipe P was formed, and the maximum negative pressure generated in the pipe and the presence or absence of clogs were examined. The results are also shown in Table 1.

（比較例２）
管継手として、上記実施例１の排水管継手１ａに代えて、図１６に示すように、横枝管接続部２２０に曲がり部を設けず、筒状胴部２１０の内壁面に、表１に示す水平投影面積、傾斜角度、横枝管の管底から上端位置、横枝管の管底からの下端位置である旋回羽根（図示せず）を備えたＤＶ−ＤＴタイプの管継手２００を用いて排水立管路Ｐを形成し、管内最大発生負圧及び雑物のつまりの有無を調べ、その結果を表１に併せて示した。
（比較例３）
管継手として、上記実施例１の排水管継手１ａに代えて、図１６に示すように、横枝管接続部２２０に曲がり部を設けず、筒状胴部２１０の内壁面に、表１に示す水平投影面積、傾斜角度、横枝管の管底から上端位置、横枝管の管底からの下端位置である旋回羽根（図示せず）を備えたＤＶ−ＤＴタイプの管継手２００を用いて排水立管路Ｐを形成し、管内最大発生負圧及び雑物のつまりの有無を調べ、その結果を表１に併せて示した。 (Comparative Example 2)
As a pipe joint, instead of the drain pipe joint 1a of the first embodiment, as shown in FIG. 16, the side branch pipe connection part 220 is not provided with a bent part, and the inner wall surface of the cylindrical body part 210 is shown in Table 1. Using a DV-DT type pipe joint 200 provided with swirl vanes (not shown) which are the horizontal projection area shown, the inclination angle, the upper end position from the bottom of the side branch pipe, and the lower end position from the bottom of the side branch pipe The drainage duct P was formed, and the maximum negative pressure generated in the pipe and the presence or absence of clogs were examined. The results are also shown in Table 1.
(Comparative Example 3)
As a pipe joint, instead of the drain pipe joint 1a of the first embodiment, as shown in FIG. 16, the side branch pipe connection part 220 is not provided with a bent part, and the inner wall surface of the cylindrical body part 210 is shown in Table 1. Using a DV-DT type pipe joint 200 provided with swirl vanes (not shown) which are the horizontal projection area shown, the inclination angle, the upper end position from the bottom of the side branch pipe, and the lower end position from the bottom of the side branch pipe The drainage duct P was formed, and the maximum negative pressure generated in the pipe and the presence or absence of clogs were examined. The results are also shown in Table 1.

Figure 2010255348
Figure 2010255348

上記表１から、本発明の管継手を用いれば、旋回羽根を備えていないＤＶ―ＬＴタイプの管継手に比べて、排水性能が格段に向上することがわかる。また、比較例２、３のように、ＤＶ−ＤＴタイプの管継手に同様の旋回羽根を設けても排水性能がそれほど向上しないことがわかる。   From Table 1 above, it can be seen that if the pipe joint of the present invention is used, the drainage performance is remarkably improved as compared with the DV-LT type pipe joint not provided with the swirl vanes. Moreover, it turns out that drainage performance does not improve so much even if it provides the same swirl | wing blade in a DV-DT type pipe joint like the comparative examples 2 and 3. FIG.

１ａ，１ｂ，１ｃ，１ｄ，１ｅ 排水管継手
２ａ，２ｂ，２ｃ，２ｄ 継手本体
２１ 筒状胴部
２２ 上部立管接続部
３１ 曲がり部
３２ 横枝管接続部
２４ 旋回羽根
２４ａ 旋回羽根２４の上端
２４ｂ 旋回羽根２４の下端
７ａ 立管
７ｂ 横枝管
７１ 横枝管７ａの管底
Ａ 排水構造 1a, 1b, 1c, 1d, 1e Drainage pipe joints 2a, 2b, 2c, 2d Fitting main body 21 Cylindrical body part 22 Upper vertical pipe connection part 31 Bending part 32 Side branch pipe connection part 24 Swirling blade 24a Upper end of swirling blade 24 24b Lower end 7a of swirl vane 24 Vertical pipe 7b Horizontal branch pipe 71 Pipe bottom A of horizontal branch pipe 7a Drainage structure

Claims (5)

接続される立管と略同じ内径をした筒状胴部を有し、筒状胴部上端に上部立管接続部を備える継手本体と、この継手本体の前記筒状胴部の側壁面に連設され、筒状胴部に向かって下方に湾曲する曲がり部を有する横枝管接続部とを備える排水管継手において、
前記筒状胴部は、その内壁面に旋回羽根を備えるとともに、この旋回羽根の上端が横管路接続部に接続される横枝管の管底より上方に位置することを特徴とする排水管継手。 A joint body having a cylindrical body having an inner diameter substantially the same as that of the connected vertical pipe, and having an upper vertical pipe connection portion at the upper end of the cylindrical body, and a side wall surface of the tubular body of the joint main body. In the drainage pipe joint provided with a horizontal branch pipe connection part having a bent part that is provided and curved downward toward the cylindrical body part,
The cylindrical body is provided with swirl vanes on its inner wall surface, and the drain pipe is characterized in that the upper end of the swirl vane is located above the bottom of the side branch pipe connected to the horizontal pipe connection part. Fittings. 旋回羽根の下端が接続される横枝管の管底より下方に位置する請求項１に記載の排水管継手。   The drainage pipe joint according to claim 1, wherein the drainage pipe joint is located below the bottom of the horizontal branch pipe to which the lower end of the swirl vane is connected. 旋回羽根の、筒状胴部の管軸に直交する面への水平投影面積が、接続される立管の内部横断面積に対して５％〜３０％の大きさである請求項１または請求項２に記載の排水管継手。   The horizontal projection area of the swirl vane on the surface perpendicular to the tube axis of the cylindrical body is 5% to 30% of the internal transverse area of the connected standpipe. 2. The drainage pipe joint according to 2. 旋回羽根の、筒状胴部の管軸に対する傾斜角が２０°〜５０°である請求項１〜請求項３のいずれかに記載の排水管継手。   The drainage pipe joint according to any one of claims 1 to 3, wherein an angle of inclination of the swirl blade with respect to the tube axis of the cylindrical body is 20 ° to 50 °. 請求項１〜請求項４のいずれかに記載の排水管継手が立管と横枝管の接続部に、筒状胴部が排水立管路を構成するように組み込まれていることを特徴とする排水構造。   A drainage pipe joint according to any one of claims 1 to 4 is incorporated in a connecting part between a vertical pipe and a lateral branch pipe so that a cylindrical body part constitutes a drainage vertical pipe. Drainage structure.
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JP4174794B2 (en) * 2002-09-03 2008-11-05 昭和電工建材株式会社 Drainage piping device having a single pipe part with protrusions

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JP2017057634A (en) * 2015-09-17 2017-03-23 積水化学工業株式会社 Collection pipe joint
JP2017082903A (en) * 2015-10-28 2017-05-18 株式会社Ｌｉｘｉｌ Lateral pipe connection structure and toilet facility
JP2020008158A (en) * 2018-07-12 2020-01-16 タキロンシーアイ株式会社 Pipe joint
JP7049204B2 (en) 2018-07-12 2022-04-06 タキロンシーアイ株式会社 Pipe fittings
US20220325839A1 (en) * 2021-04-09 2022-10-13 Globalfoundries U.S. Inc. Pipe assembly having an angled plate and fabrication methods
US11841103B2 (en) * 2021-04-09 2023-12-12 Globalfoundries U.S. Inc. Pipe assembly having an angled plate and fabrication methods

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