JP2004169538A - Pipe joint for drainage - Google Patents

Pipe joint for drainage Download PDF

Info

Publication number
JP2004169538A
JP2004169538A JP2003290622A JP2003290622A JP2004169538A JP 2004169538 A JP2004169538 A JP 2004169538A JP 2003290622 A JP2003290622 A JP 2003290622A JP 2003290622 A JP2003290622 A JP 2003290622A JP 2004169538 A JP2004169538 A JP 2004169538A
Authority
JP
Japan
Prior art keywords
drainage
inclined plate
pipe
plate
horizontal branch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003290622A
Other languages
Japanese (ja)
Inventor
Masakatsu Sakamoto
正勝 坂本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP2003290622A priority Critical patent/JP2004169538A/en
Publication of JP2004169538A publication Critical patent/JP2004169538A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Sink And Installation For Waste Water (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe joint for drainage of an excellent drain performance without flowing discharged water into a horizontal branch pipe, has a simple configuration and is easy to be manufactured. <P>SOLUTION: The pipe joint for drainage includes an upper and a lower opening connection part for connecting a drain vertical pipe, a cylindrical part with a diameter larger than that of the drain vertical pipe to be connected to the lower part of the upper opening connection part, a tapered-pipe part with a diameter reduced downward connecting to the lower opening connection part at the lower part of the cylindrical part and at least one opening of the horizontal branch pipe on the side part of the cylindrical part. Furthermore, an inclined plate tilting against an pipe axis to receive and whirl the discharged water flow in the vertical pipe and also a weir plate to prevent the discharged water flow whirled by the inclined plate from flowing into the horizontal branch pipe are provided on the inner side wall of the cylindrical part. <P>COPYRIGHT: (C)2004,JPO

Description

本発明は、排水用管継手に関し、詳しくは、集合住宅、ホテル、事務所ビルなどの排水配管における排水立て管配管に好適に用いられる排水用管継手に関する。   The present invention relates to a drainage pipe joint, and more particularly to a drainage pipe joint suitably used for drainage stack pipes in drainage pipes of apartment houses, hotels, office buildings, and the like.

集合住宅において使用される排水立て管配管に用いられる排水用管継手は、一般に、排水立て管を接続するための上部及び下部開口接続部、該上部開口接続部の下部につながる前記排水立て管よりも大径の円筒部、該円筒部の下部に下向きに縮径されながら下部開口接続部につながるテーパー筒部、及び前記円筒部の側部に設けられた少なくとも一口の横枝管接続部を有し、テーパー筒部内面には必要に応じて、立て管を通って排水される立て管排水流を旋回させながら排水させるための旋回羽根が設けられた構造となっている。   Drainage pipe joints used for drainage stack pipes used in apartment houses generally include upper and lower opening connections for connecting drainage stacks, and a drainage stack connected to a lower portion of the upper opening connection. Also has a large-diameter cylindrical portion, a tapered cylindrical portion connected to the lower opening connecting portion while being reduced in diameter at a lower portion of the cylindrical portion, and at least one horizontal branch pipe connecting portion provided on a side portion of the cylindrical portion. In addition, the inner surface of the tapered cylindrical portion is provided with a swirl blade for draining while draining the drainage drainage flow drained through the drainpipe, if necessary.

近年、前記排水用管継手の排水性能などを向上するため種々の提案がなされており、例えば、枝管受け口よりも上方に位置して偏流ガイドを備え、下方縮径部での旋回方向と同方向に旋回力を与える偏流ガイド側部を設けた排水集合管が開示されている(例えば、特許文献1参照。)。   In recent years, various proposals have been made to improve the drainage performance and the like of the drainage pipe joint. For example, a drainage guide is provided above the branch pipe receiving port, and the same as the turning direction at the lower diameter reducing portion. There is disclosed a drainage pipe provided with a drift guide side that gives a turning force in a direction (for example, see Patent Document 1).

また、膨径室(前記円筒部に相当)の上部に排水流を偏流させるための偏流板が設けられ、テーパー室内周面には複数枚の旋回整流板が突設されており、膨径室から流下する排水流に対する旋回整流板は突出量が大きく形成され、他の旋回整流板は突出量が小さく形成されている排水用配管部材が開示されている(例えば、特許文献2参照。)。   In addition, a deflector plate for deflected the drainage flow is provided above the enlarged diameter chamber (corresponding to the cylindrical portion), and a plurality of swirling rectifying plates are protrudingly provided on the peripheral surface of the tapered chamber. There is disclosed a drainage pipe member in which a swirl flow plate for a drain flow flowing down from a large amount of protrusion is formed, and other swirl flow plates are formed with a small protrusion amount (for example, see Patent Document 2).

更に、本体部(前記円筒部に相当)の横枝管接続口の下方において、それぞれ内周壁より突出した少なくとも1個の第1旋回ガイドと、少なくとも1個の第2旋回ガイドとを備え、前記第1旋回ガイドと第2旋回ガイドとが管軸に対して非対称で対向して設けられてなる排水集合管継手が開示されている(例えば特許文献3参照。)。
特開平8−93021号公報 特許第2912827号 特開平11−217859号公報
Further, below the horizontal branch pipe connection port of the main body portion (corresponding to the cylindrical portion), at least one first turning guide and at least one second turning guide projecting from the inner peripheral wall are provided, respectively. There is disclosed a drainage pipe joint in which a first turning guide and a second turning guide are provided asymmetrically opposed to a pipe axis (for example, see Patent Document 3).
JP-A-8-93021 Patent No. 2912827 JP-A-11-217859

しかし、本発明者の検討によれば、前記特許文献1における排水用管継手においては、排水が流下するための有効断面積を確保することが必ずしも充分とはいえず、また、枝管への流入を防止するために偏流ガイド側壁の形状を大きくする必要があるので、偏流ガイドの形状が複雑になり製造が困難になりやすいという問題があった。   However, according to the study of the present inventor, in the pipe joint for drainage described in Patent Document 1, it is not always sufficient to secure an effective cross-sectional area for drainage to flow down. In order to prevent the inflow, it is necessary to increase the shape of the side wall of the drift guide. Therefore, there is a problem that the shape of the drift guide becomes complicated and manufacturing becomes difficult.

また、前記特許文献2における排水用管継手においても、偏流板によって偏流させた排水流に対して、排水条件などを加味して精度良く対応する位置に旋回整流板を設ける必要があるため、旋回整流板の位置設定が難しくまた位置が限定され、継手の大きさなどの全体形状にも大きな制約を受けることとなり製造が困難になりやすいという問題があった。   Also, in the pipe fitting for drainage described in Patent Literature 2, it is necessary to provide a swirl flow rectifying plate at a position that accurately corresponds to the drainage flow deflected by the deflector plate in consideration of drainage conditions and the like. There is a problem that it is difficult to set the position of the current plate, and the position is limited, and the overall shape such as the size of the joint is greatly restricted, so that the manufacturing tends to be difficult.

更に、前記特許文献3における排水集合管継手においては、旋回羽根を横枝管接続口よりを下方において、排水立て管より大径の円筒部からテーパー筒部に2枚を管軸に対して位置をずらして設置しているが、旋回羽根が対向しており、共に横枝管接続口の下方に設置してあるため、互いの旋回羽根からの旋回流の干渉の影響を受けて、流れが乱れるため、排水性能に影響を与えるという問題があったほか、テーパー筒部に大きな旋回羽根を設置することによる汚物の詰まりを防止するために、十分に大きな旋回羽根を設置できない等の問題があった。   Furthermore, in the drainage collecting pipe joint described in Patent Document 3, two rotating blades are positioned below the horizontal branch pipe connection port from the cylindrical portion having a larger diameter than the drainage stack to the tapered cylindrical portion with respect to the pipe axis. However, since the swirling blades are facing each other and both are installed below the horizontal branch pipe connection port, the flow is affected by the interference of the swirling flow from each other and the flow is In addition to the problem that the turbulence affects the drainage performance, there are also problems such as the inability to install a sufficiently large swirl vane to prevent clogging with dirt due to the installation of the large swirl vane in the tapered cylinder. Was.

本発明の目的は、前記従来の排水用管継手の問題点に鑑み、排水流が横枝管へ流入することなく優れた排水性能を有し、簡略な形状で製造が容易である排水用管継手を提供することにある。   An object of the present invention is to provide a drainage pipe which has excellent drainage performance without a drainage flow flowing into a horizontal branch pipe and has a simple shape and is easy to manufacture in view of the problems of the conventional drainage pipe joint. It is to provide a joint.

請求項1記載の排水用管継手(発明1)は、排水立て管を接続するための上部及び下部開口接続部、該上部開口接続部の下部につながる前記排水立て管よりも大径の円筒部、該円筒部の下部に下向きに縮径されながら下部開口接続部につながるテーパー筒部、及び前記円筒部の側部に設けられた少なくとも一口の横枝管接続部を有する排水用管継手において、立て管排水流を受け止め旋回させるための管軸に対して傾斜した傾斜板、及び該傾斜板により旋回された排水流が前記横枝管接続部に流入するのを防止するための堰き止め板が、前記円筒部内側壁に設けられたことを特徴とする。   The drainage pipe joint according to claim 1 (invention 1) is an upper and lower opening connecting portion for connecting a drainage stack, and a cylindrical portion having a larger diameter than the drainage stack connecting to a lower portion of the upper opening connecting portion. In a drainage pipe joint having a tapered tubular portion connected to a lower opening connecting portion while being reduced in diameter downward at a lower portion of the cylindrical portion, and at least one side branch pipe connecting portion provided on a side portion of the cylindrical portion, An inclined plate inclined with respect to a pipe axis for receiving and rotating the vertical stack drainage flow, and a baffle plate for preventing the drainage flow swirled by the inclined plate from flowing into the horizontal branch pipe connection portion. , Provided on the inner wall of the cylindrical portion.

請求項2記載の排水用管継手(発明2)は、発明1の排水用管継手であって、上記傾斜板及び堰き止め板のいずれの上端部も前記横枝管接続部の上端部より高い位置に配置され、傾斜板下端部の位置における傾斜板と堰き止め板との距離が、0mm〜100mmとされていることを特徴とする。   The drainage pipe joint according to claim 2 (invention 2) is the drainage pipe joint according to invention 1, wherein the upper end of each of the inclined plate and the damming plate is higher than the upper end of the horizontal branch pipe connection portion. The distance between the inclined plate and the dam plate at the position of the lower end of the inclined plate is set to 0 mm to 100 mm.

請求項3記載の排水用管継手(発明3)は、発明1又は発明2の排水用管継手であって、上記傾斜板及び堰き止め板のいずれの上端部も、横枝管接続部の上端部より高い位置に設けられ、堰き止め板下端部の高さが、傾斜板下端部の高さと同じ又は低くされていることを特徴とする。   The drainage pipe joint according to claim 3 (invention 3) is the drainage pipe joint according to invention 1 or 2, wherein both the upper ends of the inclined plate and the damming plate are the upper ends of the horizontal branch pipe connection portions. The height of the lower end of the dam plate is equal to or lower than the height of the lower end of the inclined plate.

請求項4記載の排水用管継手(発明4)は、発明1からの3のいずれかの排水用管継手であって、前記横枝管接続部の下端部より下方に、前記傾斜板により受け止められずに流下した立て管排水流を受け止め旋回させるための管軸に対して傾斜板と同方向に傾斜した旋回羽根(A)が設けられたことを特徴とする。   The drainage pipe joint according to claim 4 (invention 4) is the drainage pipe joint according to any one of inventions 1 to 3, which is received by the inclined plate below a lower end portion of the horizontal branch pipe connection portion. A swirl vane (A) is provided which is inclined in the same direction as the inclined plate with respect to a tube axis for receiving and rotating the stack drain water flow that has flowed down.

請求項5記載の排水用管継手(発明5)は、発明4の排水用管継手であって、前記横枝管接続部の下端部より下方に、管軸に対して旋回羽根(A)と同方向に傾斜した、前記堰き止め板により流下した立て管排水流を受け止め旋回させるための旋回羽根(B)が設けられたことを特徴とする。   The drainage pipe joint according to claim 5 (invention 5) is the drainage pipe joint according to invention 4, wherein the swirl vane (A) is provided below the lower end of the horizontal branch pipe connection portion with respect to the pipe axis. A swirl vane (B) is provided, which is inclined in the same direction and receives and rotates the drainage drainage water flowed down by the dam plate.

請求項6記載の排水用管継手(発明6)は、発明4又は5のいずれかの排水用管継手であって、前記旋回羽根(A)が、管軸に対して20〜45°の角度で設けられたことを特徴とする。   The drainage pipe joint according to claim 6 (invention 6) is the drainage pipe joint according to any of inventions 4 and 5, wherein the swirl vane (A) has an angle of 20 to 45 ° with respect to a pipe axis. It is characterized by being provided in.

請求項7記載の排水用管継手(発明7)は、排水立て管を接続するための上部及び下部開口接続部と、該上部開口接続部の下部につながる前記排水立て管よりも大径の円筒部、該円筒部の下部に下向きに縮径されながら下部開口接続部につながるテーパー筒部、及び前記円筒部の側部に設けられた少なくとも一口の横枝管接続部を有する排水用管継手において、上記円筒部内面に、立て管排水流を受け止め旋回させるための管軸に対して傾斜した傾斜板が、上端位置が横枝管接続部の上端より高くなるように設けられ、上記横枝管接続部下端より低い位置に、傾斜板により受け止められずに流下した立て管排水流を受け止め旋回させるための管軸に対して傾斜板と同方向に傾斜した旋回羽根(A)が設けられ、上記傾斜板の下端部と旋回羽根(A)の上端部との距離が50mm〜450mmとされていることを特徴とする。   The drainage pipe joint according to claim 7 (invention 7) is an upper and lower opening connecting portion for connecting a drainage stack, and a cylinder having a larger diameter than the drainage stacking tube connected to a lower portion of the upper opening connecting portion. Part, a tapered tubular part connected to the lower opening connecting part while being reduced in diameter at the lower part of the cylindrical part, and a drainage pipe joint having at least one side branch pipe connecting part provided on a side part of the cylindrical part. An inclined plate inclined on a pipe axis for receiving and rotating a standing-pipe drainage flow is provided on an inner surface of the cylindrical portion so that an upper end position thereof is higher than an upper end of the horizontal branch pipe connection portion. At a position lower than the lower end of the connecting portion, a swirl vane (A) is provided which is inclined in the same direction as the inclined plate with respect to a pipe axis for receiving and swirling a vertical drainage flow which has flowed down without being received by the inclined plate. Lower end of inclined plate and swirl vane The distance between the upper end of the A) is characterized in that there is a 50Mm~450mm.

請求項8記載の排水用管継手(発明8)は、発明7の排水用管継手であって、前記横枝管接続部下端より低い位置に、前記堰き止め板により流下した立て管排水流を受け止め旋回させるための管軸に対して旋回羽根(A)と同方向に傾斜した旋回羽根(B)が設けられたことを特徴とする。   The drainage pipe joint according to claim 8 (invention 8) is the drainage pipe joint according to invention 7, wherein the standing pipe drainage flow that has flowed down by the damming plate is located at a position lower than the lower end of the horizontal branch pipe connection portion. A swirling blade (B) is provided which is inclined in the same direction as the swirling blade (A) with respect to a tube axis for receiving and turning.

発明1〜6においては、排水立て管よりも大径の円筒部内側面に、立て管排水流を受け止め旋回させるための管軸に対して傾斜した傾斜板と、該傾斜板により旋回された排水流が、前記円筒部の側部に設けられた横枝管接続部に流入するのを防止するための堰き止め板とが設けられている。更に、上記に加え、傾斜板、又は堰き止め板、又は横枝管接続部より下方に、旋回羽根(A)又は旋回羽根(B)が設けられていても良い。   In the inventions 1 to 6, on the inner surface of the cylindrical portion having a diameter larger than that of the drain stack, an inclined plate inclined with respect to a pipe axis for receiving and turning the drain stack drain flow, and the drain flow swirled by the inclined plate. However, there is provided a dam plate for preventing flow into a horizontal branch pipe connecting portion provided on a side portion of the cylindrical portion. Further, in addition to the above, a swirling blade (A) or a swirling blade (B) may be provided below the inclined plate, the dam plate, or the horizontal branch pipe connection part.

傾斜板及び堰き止め板は、いずれもその上端部が横枝管接続部の上端部より高い位置に設けられている。取付け位置が横枝管接続部の上端部より上方であるので、上方の立て管から流下してきた汚水等は傾斜板に衝突して旋回流となり、横枝管から来る汚水等が継手円筒部内に流入することを妨げなくなる。   The upper end of each of the inclined plate and the dam plate is provided at a position higher than the upper end of the horizontal branch pipe connecting portion. Since the mounting position is above the upper end of the horizontal branch pipe connection, the sewage and the like flowing down from the upper standing pipe collides with the inclined plate and becomes a swirling flow, and the sewage and the like coming from the horizontal branch pipe enter the joint cylindrical section. It does not prevent the inflow.

傾斜板下端部又は堰き止め板下端部のいずれか高い方の位置における傾斜板と堰き止め板との距離は、0mm〜100mmとされ、約20mmから80mm程度が好ましい。100mmより広ければ、傾斜板により旋回流とされた汚水等は堰き止め板により堰き止めることができず、排水の流れが乱れてしまう他、横枝管への逆流が起こってしまう恐れがある。   The distance between the inclined plate and the blocking plate at the higher position of the lower end of the inclined plate or the lower end of the blocking plate is 0 mm to 100 mm, and preferably about 20 mm to 80 mm. If the width is larger than 100 mm, the sewage or the like swirled by the inclined plate cannot be blocked by the blocking plate, and the flow of drainage may be disturbed, and the backflow to the horizontal branch pipe may occur.

なお、この距離は0mmであっても良いが、0mmの場合は、その箇所における傾斜板又は堰き止め板の継手内部への突出長さが少なくなるように、例えばその箇所において突出長さが10mm以下程度となるようにされると良い。これ以上継手内部側に突出していると、汚水中の汚物や異物が詰まってしまう恐れがでてくる。   Note that this distance may be 0 mm, but in the case of 0 mm, the projecting length of the inclined plate or the damming plate at the location is reduced to 10 mm, for example, so that the projecting length at the location is reduced. It is good to make it below. If it protrudes further inside the joint, there is a risk that dirt and foreign matter in the sewage will be clogged.

通常、上記傾斜板を設ける際の管軸に対しての傾斜角度(以下、「設置角度」ともいう)は、20°〜65°とされる。傾斜板の角度が65°より立っていると、傾斜板に衝突した汚水が跳ね返り、流れを乱してしまう恐れが大きくなって、管内の圧力変動が大きくなり過ぎることがある。また、20°未満であると充分な旋回流が得られないことに加え、継手上方から見て、傾斜板の投影面積と円筒部の断面積との比が所定の範囲(後述)に入らなくなる恐れも出てくる。   Usually, the inclination angle (hereinafter, also referred to as “installation angle”) with respect to the tube axis when the inclined plate is provided is set to 20 ° to 65 °. If the angle of the inclined plate is higher than 65 °, the sewage colliding with the inclined plate rebounds, and there is a high possibility of disturbing the flow, and the pressure fluctuation in the pipe may become too large. If the angle is less than 20 °, a sufficient swirling flow cannot be obtained, and the ratio of the projected area of the inclined plate to the cross-sectional area of the cylindrical portion does not fall within a predetermined range (described later) when viewed from above the joint. Fear also comes out.

また、堰き止め板の設置角度は垂直方向から−30°〜20°とされる。設置角度が20°より傾くと、傾斜板によって旋回された旋回流が十分に堰き止められずに、横枝管への逆流が発生してしまう恐れも出てくる。また−30°よりも傾くと受け止めた水の跳ね返りが大きくなり、流れを乱してしまう恐れがあり、管内の圧力変動が大きくなってしまう恐れがある。   In addition, the installation angle of the dam plate is -30 ° to 20 ° from the vertical direction. If the installation angle is more than 20 °, there is a risk that the swirling flow swirled by the inclined plate will not be sufficiently blocked and a backflow to the horizontal branch pipe will occur. If the angle is more than -30 °, the rebound of the received water becomes large, which may disturb the flow, and the pressure fluctuation in the pipe may be increased.

堰き止め板下端部の高さは、傾斜板下端部の高さと同じ又は低くされる。即ち、高さの差が0mm〜150mm程度低くされていると、傾斜板で旋回された汚水流は、堰き止め板と傾斜板との間でその流れが乱されずスムースな流れとなり、しかも旋回流を堰き止め板で受け止めることで流下排水の流速をを減速させつつ偏流させることができるため、優れた排水性能が発現される。又、大径の円筒部に傾斜板が設置されるので、十分に大きな羽根を設置することが可能となり、更に排水性能が向上する。   The height of the lower end of the blocking plate is equal to or lower than the height of the lower end of the inclined plate. In other words, if the height difference is reduced by about 0 mm to 150 mm, the sewage flow swirled by the inclined plate becomes a smooth flow without being disturbed between the damming plate and the inclined plate, and furthermore, the swirl flows. By catching the flow with the dam plate, the flow velocity of the downflow drainage can be decelerated while reducing the flow velocity of the downflow drainage, thereby exhibiting excellent drainage performance. In addition, since the inclined plate is installed on the large-diameter cylindrical portion, it is possible to install sufficiently large blades, and the drainage performance is further improved.

この場合の堰き止め板の設置角度は−30°〜20°とされる。即ち、傾斜板の設置角度は20°〜65°であるので、堰き止め板の設置角度が上記範囲であれば、傾斜板と堰き止め板とが、あたかもV字形状ないしy字形状となるように配置される。   In this case, the installation angle of the dam plate is -30 ° to 20 °. That is, since the installation angle of the inclined plate is 20 ° to 65 °, if the installation angle of the damming plate is in the above range, the inclined plate and the damming plate are formed as if they are V-shaped or y-shaped. Placed in

前記横枝管接続部の下端部より下方に、前記傾斜板により受け止められずに流下した立て管排水流を受け止め旋回させるための管軸に対して傾斜した旋回羽根(A)、又は前記堰き止め板により受け止められずに流下した立て管排水流を受け止め旋回させるための管軸に対して傾斜した旋回羽根(B)が設けられたものである。従って、上記排水性能が向上する効果は更に確実なものとなる。   A swirl vane (A) inclined with respect to a pipe axis for receiving and swirling a standing drain water flow that has flowed down without being received by the inclined plate below a lower end portion of the horizontal branch pipe connection portion, or the damming member. A swirl vane (B) inclined with respect to a pipe axis for receiving and swirling a stack drainage flow that has flowed down without being received by the plate is provided. Therefore, the effect of improving the drainage performance becomes more certain.

旋回羽根(A)の設置角度が、20°〜45°の角度で設けられている。20°より立っていれば、傾斜板により受け止められずに流下した立て管排水流が充分な旋回流とならず、また45°より傾いていれば、旋回羽根(A)に当たる汚水が跳ね返り、流れを乱してしまう恐れがある。   The installation angle of the swirling blade (A) is provided at an angle of 20 ° to 45 °. If it is standing at more than 20 °, the vertical drainage flow that has flowed down without being received by the inclined plate will not be a sufficient swirling flow, and if it is more than 45 °, the sewage hitting the swirling blade (A) will rebound and flow. May be disturbed.

旋回羽根(B)の設置角度が20°〜65°の角度で設けられている。20°より立っていれば、前記堰き止め板により受け止められずに流下した排水立て管を流下する排水が充分な旋回流とならず、65°より傾いていれば、旋回羽根(B)に当たる汚水が跳ね返り、流れを乱してしまう恐れがある。   The installation angle of the swirling blade (B) is provided at an angle of 20 ° to 65 °. If it is standing at more than 20 °, the drainage flowing down the drain stack that has not been received by the blocking plate will not be a sufficiently swirling flow, and if it is inclined at more than 65 °, sewage that will hit the swirling blade (B) Could bounce off and disrupt the flow.

前記旋回羽根(A)又は旋回羽根(B)の設置角度は、大き過ぎると立て管排水流が旋回羽根(A)又は旋回羽根(B)に当たった際の跳ね返りが大きくなり、管内の圧力変動が大きくなり過ぎることがある。また、設置角度が小さ過ぎると、前記排水立て管の内径断面積(S)に対する前記旋回羽根(A)と旋回羽根(B)との合計の排水立て管内径面に対する投影面積(sg)との割合(sg/S、以下、「投影面積比」)を得るために前記旋回羽根(A)又は旋回羽根(B)の形状を長くする必要が生じ、そのため継手の上下方向の長さが長くなりコストアップに繋がる他、継手の重量が過大になることがある。このため前記設置角度は、旋回羽根(A)においては20°〜45°であることが好ましく、旋回羽根(B)においては20°〜65°であることが好ましいのである。   If the swirling blade (A) or the swirling blade (B) is installed at an excessively large angle, the drainage flow of the standing pipe impinges on the swirling blade (A) or the swirling blade (B), causing a large rebound. May be too large. Also, if the installation angle is too small, the projected area (sg) of the total of the swirl vanes (A) and the swirl vanes (B) with respect to the inner diameter cross-sectional area (S) of the drain stack will be described. In order to obtain the ratio (sg / S, hereinafter referred to as “projected area ratio”), it is necessary to lengthen the shape of the swirl vane (A) or the swirl vane (B), thereby increasing the vertical length of the joint. In addition to increasing the cost, the weight of the joint may be excessive. Therefore, the installation angle is preferably 20 ° to 45 ° for the swirling blade (A), and is preferably 20 ° to 65 ° for the swirling blade (B).

上端部位置が低い方の、前記旋回羽根(A)又は旋回羽根(B)のいずれかの旋回羽根のうち、上端部位置が低い方の旋回羽根例えば旋回羽根(B)の排水用管継手内面側への突出量が、上端部位置が高い方の旋回羽根例えば旋回羽根(A)の排水用管継手の内面側への突出量よりも大きくされている。従って、排水立て管を流下してくる汚水は旋回羽根(A)と旋回羽根(B)とに良く衝突し、効果的に旋回流となる。   Inner surface of drainage pipe joint of lower-end swivel blade of lower swirl blade (A) or swirl blade (B), for example, swirler blade (B) at lower end position The amount of protrusion to the side is set to be larger than the amount of protrusion of the swirling blade having a higher upper end position, for example, the swirling blade (A), to the inner surface side of the drainage pipe joint. Therefore, the sewage flowing down the drainage stack collides well with the swirl blade (A) and the swirl blade (B), and effectively becomes a swirl flow.

なお、前記旋回羽根(A)及び旋回羽根(B)は、何れか単独で設けられてもよいが、双方共に設けられたものであると、旋回力向上の効果が確実になる点でより好ましい。   The turning blade (A) and the turning blade (B) may be provided alone, but it is more preferable that both are provided because the effect of improving the turning force is ensured. .

前記排水立て管の内径断面積(S)に対する前記旋回羽根(A)と前記旋回羽根(B)との合計の排水立て管内径面に対する投影面積(sg)との割合(sg/S)が0.15〜0.55とされることが好ましい。   The ratio (sg / S) of the projected area (sg) of the total of the swirl vanes (A) and the swirl vanes (B) to the inner diameter cross-sectional area (S) of the drainage stack to the inner surface of the drainage stack is 0. .15 to 0.55.

投影面積比(sg/S)が0.55より大き過ぎると、排水に含まれる異物などの詰まりが発生し易くなることがあり、0.15より小さ過ぎると立て管排水流を受け止め旋回させる機能が発揮され難くなることがある。この場合、特に前記傾斜板6により受け止められずに流下した立て管排水流を効率よく受け止め更に旋回力を付与するためには、下方に位置する旋回羽根の投影面積を上方に位置する旋回羽根の投影面積より大きくすることが好ましい。このことは換言すると、前記旋回羽根(A)の排水用管継手の内面側への突出量が、前記旋回羽根(B)の排水用管継手の内面側への突出量よりも大きいことを意味する。   If the projected area ratio (sg / S) is too large than 0.55, clogging of foreign matters and the like contained in the drainage may easily occur. May be difficult to exhibit. In this case, in particular, in order to efficiently receive the standing pipe drainage flow that is not received by the inclined plate 6 and further apply the turning force, the projected area of the lower turning blade must be increased by increasing the projected area of the lower turning blade. It is preferable to make it larger than the projection area. In other words, this means that the amount of protrusion of the swirling blade (A) toward the inner surface side of the drainage fitting is greater than the amount of protrusion of the swirling blade (B) toward the inner surface side of the drainage fitting. I do.

前記傾斜板が管軸に対して20°〜65°の設置角度で設けられ、且つ前記排水立て管の内径断面積(S)と前記傾斜板の排水立て管内径面に対する投影面積(sk)との割合(sk/S)が0.05〜0.30であることが好ましい。   The inclined plate is provided at an installation angle of 20 ° to 65 ° with respect to the tube axis, and the inner diameter cross-sectional area (S) of the drainage stack and the projected area (sk) of the inclined plate with respect to the inner surface of the drainage stack. Is preferably 0.05 to 0.30.

前記傾斜板の設置角度が20°より小さ過ぎると、前記排水立て管の内径断面積(S)と前記傾斜板の排水立て管内径面に対する投影面積(sk)との割合(sk/S、以下、「投影面積比」ともいう)を確保するために前記傾斜板の形状を長くする必要が生じ、そのため継手の上下方向の長さが長くなりコストアップに繋がる他、継手の重量が過大になることがある。このため、前記投影面積比は0.05〜0.30であることが好ましく、前記傾斜板の設置角度は20°〜65°であることが好ましいのである。   If the installation angle of the inclined plate is too small, the ratio (sk / S, hereinafter) of the projected area (sk) of the inclined plate to the inner surface of the drainage stack (sk) will be described. , Also referred to as “projected area ratio”), it is necessary to lengthen the shape of the inclined plate, which increases the length of the joint in the vertical direction, leading to an increase in cost and an excessive weight of the joint. Sometimes. For this reason, the projection area ratio is preferably 0.05 to 0.30, and the installation angle of the inclined plate is preferably 20 ° to 65 °.

上記傾斜板下端部の高さ位置における傾斜板と堰き止め板との距離が0mmから100mmとされ、上記第1の旋回羽根(A)の上端部が前記横枝管接続部下端部以下の低い位置となるように設けられていることが好ましい。旋回羽根(A)の上端部位置が横枝管接続部の下端部位置より高くなると、旋回羽根に衝突した汚水が横枝管側に行って、横枝管からの汚水の流入を阻害する恐れが出てくる。   The distance between the inclined plate and the dam plate at the height position of the lower end of the inclined plate is set to 0 mm to 100 mm, and the upper end of the first swirling blade (A) is lower than the lower end of the horizontal branch pipe connecting portion. Preferably, it is provided at the position. When the upper end position of the swirling blade (A) is higher than the lower end position of the horizontal branch pipe connecting portion, the sewage that has collided with the swirling blade may go to the horizontal branch pipe side and obstruct the inflow of sewage from the horizontal branch pipe. Comes out.

発明7〜8の排水用管継手は、上記発明1〜6の管継手に用いられている堰き止め板がないものである。   The drainage pipe joints of Inventions 7 and 8 have no damming plate used in the pipe joints of Inventions 1 to 6 described above.

円筒部内面に、立て管排水流を受け止め旋回させるための管軸に対して傾斜した傾斜板が、上端位置が横枝管接続部の上端より高くなるように設けられ、上記横枝管接続部下端より低い位置に、傾斜板により受け止められずに流下した立て管排水流を受け止め旋回させるための管軸に対して傾斜板と同方向に傾斜した旋回羽根(A)が設けられ、上記傾斜板の下端部と旋回羽根(A)の上端部との距離が50mm〜450mmとされていることが好ましい。   On the inner surface of the cylindrical portion, an inclined plate inclined with respect to a pipe axis for receiving and turning the drainage drainage flow is provided so that an upper end position is higher than an upper end of the horizontal branch pipe connection portion, and the horizontal branch pipe connection portion is provided. At a position lower than the lower end, there is provided a swirling blade (A) which is inclined in the same direction as the inclined plate with respect to a pipe axis for receiving and rotating a vertical drainage flow which has not flown down by the inclined plate. It is preferable that the distance between the lower end of the rotating blade (A) and the upper end of the turning blade (A) is 50 mm to 450 mm.

堰き止め板がないので、傾斜板により旋回流とされた汚水流れは、そのまま旋回羽根(A)に当たり、旋回羽根(A)により更に旋回されて下方に流れ、排水性能が向上する。この場合、傾斜板の下端部と旋回羽根(A)の上端部との距離が50mm未満とされていると、傾斜板で旋回された旋回流と旋回羽根(A)による旋回流とが干渉し合ってスムースな流れにならなくなる恐れがある。また、450mmより大であると、傾斜板により旋回された汚水の旋回流が旋回羽根(A)に案内されて衝突するまでにその旋回が乱れ、旋回羽根(A)による旋回が不十分になって傾斜板で旋回された旋回流が弱まり充分な旋回力が得られなくなる恐れがある。更に、継手の全長が長くなりコストアップにもなる。   Since there is no damming plate, the sewage flow swirled by the inclined plate directly hits the swirling blade (A), is further swirled by the swirling blade (A), and flows downward, thereby improving drainage performance. In this case, if the distance between the lower end of the inclined plate and the upper end of the swirling blade (A) is less than 50 mm, the swirling flow swirled by the inclined plate and the swirling flow by the swirling blade (A) interfere with each other. There is a risk that the flow will not be smooth. On the other hand, if it is larger than 450 mm, the swirling flow of the sewage swirled by the inclined plate is guided by the swirling blade (A), and the swirling is disturbed before the collision, and the swirling by the swirling blade (A) becomes insufficient. As a result, the swirling flow swirled by the inclined plate may be weakened and a sufficient swirling force may not be obtained. Further, the total length of the joint is increased, which leads to an increase in cost.

発明8においては、発明7の排水用管継手に加えて、その横枝管接続部下端より低い位置に、堰き止め板により流下した立て管排水流を受け止め旋回させるための管軸に対して旋回羽根(A)と同方向に傾斜した旋回羽根(B)が設けられている。従って、上記排水性能が向上する効果は更に確実なものとなる。   In the eighth aspect, in addition to the drainage joint of the seventh aspect, a swivel is provided at a position lower than the lower end of the horizontal branch pipe connection portion with respect to a pipe axis for receiving and swirling the drainage flow drained by the boom plate. A swirling blade (B) inclined in the same direction as the blade (A) is provided. Therefore, the effect of improving the drainage performance becomes more certain.

旋回羽根(A)は、管軸に対して20〜45°の角度で設けられている。20°より立っていれば、傾斜板により受け止められずに流下した立て管排水流が充分な旋回流とならず、また45°より傾いていれば、旋回羽根(A)に当たる汚水が跳ね返り、流れを乱してしまう恐れがある。   The swirling blade (A) is provided at an angle of 20 to 45 ° with respect to the tube axis. If it is standing at more than 20 °, the vertical drainage flow that has flowed down without being received by the inclined plate will not be a sufficient swirling flow, and if it is more than 45 °, the sewage hitting the swirling blade (A) will rebound and flow. May be disturbed.

旋回羽根(B)は、管軸に対して20〜65°の角度で設けられている。20°より立っていれば、前記堰き止め板により受け止められずに流下した排水立て管を流下する排水が充分な旋回流とならず、65°より傾いていれば、旋回羽根(B)に当たる汚水が跳ね返り、流れを乱してしまう恐れがある。   The turning blade (B) is provided at an angle of 20 to 65 ° with respect to the tube axis. If it is standing at more than 20 °, the drainage flowing down the drain stack that has not been received by the blocking plate will not be a sufficiently swirling flow, and if it is inclined at more than 65 °, sewage that will hit the swirling blade (B) Could bounce off and disrupt the flow.

前記旋回羽根(A)又は旋回羽根(B)を設ける際の管軸に対しての角度(以下、「設置角度」)は、大き過ぎると立て管排水流が旋回羽根(A)又は旋回羽根(B)に当たった際の跳ね返りが大きくなり、管内の圧力変動が大きくなり過ぎることがある。また、設置角度が小さ過ぎると、前記排水立て管の内径断面積(S)に対する前記旋回羽根(A)と旋回羽根(B)との合計の排水立て管内径面に対する投影面積(sg)との割合(sg/S、以下、「投影面積比」)を得るために前記旋回羽根(A)又は旋回羽根(B)の形状を長くする必要が生じ、そのため継手の上下方向の長さが長くなりコストアップに繋がる他、継手の重量が過大になることがある。このため前記設置角度は、旋回羽根(A)においては20°〜405°であることが好ましく、旋回羽根(B)においては20°〜65°であることが好ましいのである。   If the angle with respect to the pipe axis when providing the swirl blade (A) or the swirl blade (B) (hereinafter referred to as “installation angle”) is too large, the drainage flow of the vertical pipe will cause the swirl blade (A) or the swirl blade ( Bounce when hitting B) becomes large, and the pressure fluctuation in the pipe may become too large. Also, if the installation angle is too small, the projected area (sg) of the total of the swirl vanes (A) and the swirl vanes (B) with respect to the inner diameter cross-sectional area (S) of the drain stack will be described. In order to obtain the ratio (sg / S, hereinafter referred to as “projected area ratio”), it is necessary to lengthen the shape of the swirl vane (A) or the swirl vane (B), thereby increasing the vertical length of the joint. In addition to increasing the cost, the weight of the joint may be excessive. For this reason, the installation angle is preferably 20 ° to 405 ° in the swirling blade (A), and is preferably 20 ° to 65 ° in the swirling blade (B).

旋回羽根(A)又は旋回羽根(B)のうち、上端部位置が低い方の旋回羽根例えば旋回羽根(B)の排水用管継手内面側への突出量は、上端部位置が高い方の旋回羽根例えば旋回羽根(A)の排水用管継手の内面側への突出量よりも大きくされている。従って、排水立て管を流下してくる汚水は旋回羽根(A)と旋回羽根(B)とによく衝突し、効果的に旋回流となる。   Of the swirling blade (A) or the swirling blade (B), the protruding amount of the swirling blade having the lower upper end position, for example, the swirling blade (B), toward the inner surface of the drainage joint is determined by the swirling of the higher upper end position. The amount of the blade, for example, the swirling blade (A) projecting toward the inner surface side of the drainage pipe joint is set larger. Therefore, the sewage flowing down the drain stack collides well with the swirling blade (A) and the swirling blade (B), and effectively becomes a swirling flow.

なお、前記旋回羽根(A)及び旋回羽根(B)は、何れか単独で設けられてもよいが、双方共に設けられたものであると、旋回力向上の効果が確実になる点でより好ましい。   The turning blade (A) and the turning blade (B) may be provided alone, but it is more preferable that both are provided because the effect of improving the turning force is ensured. .

排水立て管の内径断面積(S)に対する前記旋回羽根(A)と前記旋回羽根(B)との合計の排水立て管内径面に対する投影面積(sg)との割合(sg/S)は、0.15〜0.55であることが好ましい。   The ratio (sg / S) of the projected area (sg) of the total of the swirl vanes (A) and the swirl vanes (B) to the inner diameter cross-sectional area (S) of the drainage stack with respect to the inner diameter surface of the drainage stack is 0. .15 to 0.55.

投影面積比(sg/S)が0.55より大き過ぎると、排水に含まれる異物などの詰まりが発生し易くなることがあり、0.15より小さ過ぎると立て管排水流を受け止め旋回させる機能が発揮され難くなることがある。この場合、特に前記傾斜板6により受け止められずに流下した立て管排水流を効率よく受け止め更に旋回力を付与するためには、前記旋回羽根(A)の投影面積を前記旋回羽根(B)の投影面積より大きくすることが好ましい。このことは換言すると、前記旋回羽根(A)の排水用管継手の内面側への突出量が、前記旋回羽根(B)の排水用管継手の内面側への突出量よりも大きいことを意味する。   If the projected area ratio (sg / S) is too large than 0.55, clogging of foreign matters and the like contained in the drainage may easily occur. May be difficult to exhibit. In this case, in particular, in order to efficiently receive the drainage drainage flow that has flowed down without being received by the inclined plate 6 and to further impart a turning force, the projected area of the turning blade (A) must be adjusted by changing the projected area of the turning blade (B). It is preferable to make it larger than the projection area. In other words, this means that the amount of protrusion of the swirling blade (A) toward the inner surface side of the drainage fitting is greater than the amount of protrusion of the swirling blade (B) toward the inner surface side of the drainage fitting. I do.

傾斜板は管軸に対して20〜65°の角度で設けられ、且つ前記排水立て管の内径断面積(S)と前記傾斜板の排水立て管内径面に対する投影面積(sk)との割合(sk/S)が0.05〜0.30とされている。   The inclined plate is provided at an angle of 20 to 65 ° with respect to the pipe axis, and the ratio of the cross-sectional area (S) of the inner diameter of the drainage stack to the projected area (sk) of the inclined plate with respect to the inner surface of the drainage stack ( (sk / S) is set to 0.05 to 0.30.

前記傾斜板の設置角度は、65°より大き過ぎると立て管排水流が傾斜板に当たった際の水の飛散などのいわゆる跳ね返りが大きくなり、管内の圧力変動が大きくなり過ぎることがある。また、設置角度が20°より小さ過ぎると、前記排水立て管の内径断面積(S)と前記傾斜板の排水立て管内径面に対する投影面積(sk)との割合(sk/S、以下、「投影面積比」ともいう)を確保するために前記傾斜板の形状を長くする必要が生じ、そのため継手の上下方向の長さが長くなりコストアップに繋がる他、継手の重量が過大になることがある。このため前記投影面積比は0.05〜0.30であることが好ましく、前記傾斜板の設置角度は20〜65°であることが好ましいのである。   If the installation angle of the inclined plate is too large than 65 °, so-called rebound such as splashing of water when the drainage drainage stream hits the inclined plate becomes large, and the pressure fluctuation in the pipe may become too large. On the other hand, if the installation angle is smaller than 20 °, the ratio (sk / S, hereinafter referred to as “sk / S”) of the cross-sectional area of the inner diameter of the drainage stack (S) and the projected area of the inclined plate with respect to the inner diameter of the drainage stack. In order to ensure the projection area ratio), it is necessary to lengthen the shape of the inclined plate, which increases the length of the joint in the vertical direction, which leads to an increase in cost and an excessive weight of the joint. is there. For this reason, the projection area ratio is preferably 0.05 to 0.30, and the installation angle of the inclined plate is preferably 20 to 65 °.

本発明の排水用管継手は、立て管排水流を受け止め旋回させるための管軸に対して傾斜した傾斜板、及び該傾斜板により旋回された排水流が前記横枝管接続部に流入するのを防止するための堰き止め板が前記円筒部内壁に設けられたことを特徴とするので、排水流が横枝管へ流入することなく優れた排水性能を有し、簡略な形状で製造が容易である排水用管継手を提供することができる。   The drainage pipe joint according to the present invention is characterized in that an inclined plate inclined with respect to a pipe axis for receiving and turning a drainage drainage flow, and the drainage flow swirled by the inclined plate flows into the horizontal branch pipe connection portion. Since a damming plate for preventing water leakage is provided on the inner wall of the cylindrical portion, the drainage flow has excellent drainage performance without flowing into the horizontal branch pipe, and is easy to manufacture with a simple shape. Can be provided.

加えて、前記傾斜板により受け止められずに流下した立て管排水流を受け止め、旋回し流下させるための旋回羽根(A)及び旋回羽根(B)が設けられる場合であっても、旋回羽根(A)及び(B)の設置位置についても、前記傾斜板からの流れに対応した位置でさえあれば良いので、ある程度任意に設定が可能となり、製造が容易となる。   In addition, even in the case where the swirl vanes (A) and the swirl vanes (B) for receiving, swirling, and descending the stack drainage flow that has flowed down without being received by the inclined plate are provided. Also, the installation positions of (B) and (B) need only be positions that correspond to the flow from the inclined plate, so that they can be arbitrarily set to some extent and the manufacturing becomes easy.

以下、本発明について図面を参照しつつ詳細に説明する。
本発明の排水用管継手は図1に例示するように、排水立て管(図示せず)を接続するための上部及び下部開口接続部1と2、及び上部開口接続部1の下部に連続して構成される前記排水立て管よりも大径の円筒部3、該円筒部3の下部に下向きに縮径されながら下部開口接続部につながるテーパー筒部4、前記円筒部3の側部に設けられた少なくとも一口の横枝管接続部5を有する排水用管継手において、立て管排水流を受け止め旋回させるための管軸に対して傾斜した傾斜板6、及び該傾斜板6により旋回された排水流が前記横枝管接続部5に流入するのを防止するための堰き止め板7が前記円筒部3の内壁に設けられたものである。
Hereinafter, the present invention will be described in detail with reference to the drawings.
As illustrated in FIG. 1, the drainage pipe joint of the present invention is connected to upper and lower opening connections 1 and 2 for connecting a drainage stack (not shown) and a lower portion of the upper opening connection 1. A cylindrical portion 3 having a diameter larger than that of the drainage stack, a tapered cylindrical portion 4 connected to a lower opening connecting portion while being reduced in diameter at a lower portion of the cylindrical portion 3, and provided on a side portion of the cylindrical portion 3. In the drainage joint having at least one horizontal branch pipe connection portion 5 provided, an inclined plate 6 inclined with respect to a pipe axis for receiving and rotating a drainage drainage flow, and drainage swirled by the inclined plate 6 A blocking plate 7 for preventing a flow from flowing into the horizontal branch pipe connecting portion 5 is provided on the inner wall of the cylindrical portion 3.

前記傾斜板6の設置角度は、大き過ぎると立て管排水流が傾斜板6に当たった際の水の飛散などのいわゆる跳ね返りが大きくなり、管内の圧力変動が大きくなり過ぎることがある。また、設置角度が小さ過ぎると、前記排水立て管の内径断面積(S)と前記傾斜板6の排水立て管内径面に対する投影面積(sk)との割合(sk/S、以下、「投影面積比」ともいう)を確保するために前記傾斜板6の形状を長くする必要が生じ、そのため継手の上下方向の長さが長くなりコストアップに繋がる他、継手の重量が過大になることがある。このため前記投影面積比は0.05〜0.30であることが好ましく、前記傾斜板の設置角度は20〜65°であることが好ましい。   If the installation angle of the inclined plate 6 is too large, so-called rebound such as splashing of water when the vertical drainage stream hits the inclined plate 6 becomes large, and the pressure fluctuation in the pipe may become too large. If the installation angle is too small, the ratio (sk / S, hereinafter referred to as “projection area”) of the inner diameter cross-sectional area (S) of the drainage stack to the projected area (sk) of the inclined plate 6 with respect to the inner surface of the drainage stack. (Also referred to as “ratio”), it is necessary to lengthen the shape of the inclined plate 6. Therefore, the length of the joint in the vertical direction is increased, leading to an increase in cost and an excessive weight of the joint. . Therefore, the projection area ratio is preferably 0.05 to 0.30, and the installation angle of the inclined plate is preferably 20 to 65 °.

前記堰き止め板7の排水用管継手の内面側への突出量は、小さ過ぎると横枝管接続部5への排水流の流入を防止し難くなることがあり、大き過ぎると排水に含まれる異物などの詰まりが発生し易くなるので10〜40mmであることが好ましい。   If the amount of the blocking plate 7 protruding toward the inner surface side of the drainage pipe joint is too small, it may be difficult to prevent the inflow of the drainage flow into the horizontal branch pipe connection portion 5, and if it is too large, it is included in the drainage. The thickness is preferably 10 to 40 mm because clogging of foreign matters and the like easily occurs.

なお、前記排水立て管の内径断面積(S)と前記堰き止め板7の排水立て管内径面に対する投影面積(ss)との割合(ss/S、以下、「投影面積比」)は、大き過ぎると排水に含まれる異物などの詰まりが発生し易くなる他、立て管排水流が堰き止め板7に当たった際の跳ね返りが大きくなり、管内の圧力変動が大きくなり過ぎることがあるので0.1以下であることが好ましい。   The ratio (ss / S, hereinafter referred to as “projected area ratio”) of the inner diameter cross-sectional area (S) of the drain stack to the projected area (ss) of the blocking plate 7 with respect to the inner surface of the drain stack is large. If it is too long, clogging of foreign matters and the like contained in the drainage is liable to occur. In addition, the bounce when the stack drainage stream hits the damming plate 7 becomes large, and the pressure fluctuation in the pipe may become too large. It is preferably 1 or less.

前記テーパー筒部4に、前記傾斜板6により受け止められずに流下した立て管排水流を受け止め旋回させるための管軸に対して傾斜した旋回羽根(A)8が設けられたものであると、排水流の旋回力が向上する点で好ましい。   When the tapered tube portion 4 is provided with a swirl vane (A) 8 inclined with respect to a tube axis for receiving and turning a vertical drainage flow that has flowed down without being received by the inclined plate 6, This is preferable in that the turning force of the drainage flow is improved.

また、前記テーパー筒部4に、前記堰き止め板7により受け止められずに流下した立て管排水流を受け止め旋回させるための管軸に対して傾斜した旋回羽根(B)9が設けられたものであると前記同様に排水流の旋回力が向上する点で好ましい。   In addition, the tapered tubular portion 4 is provided with a swirl blade (B) 9 inclined with respect to a pipe axis for receiving and swirling a vertical drainage water flow that has flowed down without being received by the damming plate 7. This is preferable in that the swirling force of the drainage flow is improved as described above.

前記旋回羽根(A)8及び旋回羽根(B)9は、何れか単独で設けられてもよいが、双方共に設けられたものであると、旋回力向上の効果が確実になる点でより好ましい。   The turning blade (A) 8 and the turning blade (B) 9 may be provided independently, but it is more preferable that both are provided because the effect of improving the turning force is ensured. .

前記旋回羽根(A)8又は旋回羽根(B)9を設ける際の管軸に対しての角度(以下、「設置角度」)は、大き過ぎると立て管排水流が旋回羽根(A)8又は旋回羽根(B)9に当たった際の跳ね返りが大きくなり、管内の圧力変動が大きくなり過ぎることがある。また、設置角度が小さ過ぎると、前記排水立て管の内径断面積(S)に対する前記旋回羽根(A)8と旋回羽根(B)9との合計の排水立て管内径面に対する投影面積(sg)との割合(sg/S、以下、「投影面積比」)を得るために前記旋回羽根(A)8又は旋回羽根(B)9の形状を長くする必要が生じ、そのため継手の上下方向の長さが長くなりコストアップに繋がる他、継手の重量が過大になることがある。
このため前記設置角度は、旋回羽根(A)8においては20°〜45°であることが好ましく、旋回羽根(B)9においては20°〜65°であることが好ましい。
If the angle with respect to the pipe axis (hereinafter referred to as “installation angle”) when the swirl vane (A) 8 or the swirl vane (B) 9 is provided is too large, the upright drainage flow may cause the swirl vane (A) 8 or The rebound when hitting the swirling blade (B) 9 becomes large, and the pressure fluctuation in the pipe may become too large. If the installation angle is too small, the projected area (sg) of the total of the swirl vanes (A) 8 and the swirl vanes (B) 9 with respect to the inner diameter cross-sectional area (S) of the drain stack against the inner surface of the drain stack. (Sg / S, hereinafter referred to as “projected area ratio”), it is necessary to lengthen the shape of the swirling vane (A) 8 or the swirling vane (B) 9. In addition to the lengthening of the joint, which leads to an increase in cost, the weight of the joint may be excessive.
For this reason, the installation angle is preferably 20 ° to 45 ° in the swirling blade (A) 8 and is preferably 20 ° to 65 ° in the swirling blade (B) 9.

また、前記旋回羽根(A)と前記旋回羽根(B)との合計の投影面積比(s/S)は、大き過ぎると、排水に含まれる異物などの詰まりが発生し易くなることがあり、小さ過ぎると立て管排水流を受け止め旋回させる機能が発揮され難くなることがあるので0.15〜0.55であることが好ましい。   If the total projected area ratio (s / S) of the swirling blade (A) and the swirling blade (B) is too large, clogging of foreign matter or the like contained in drainage may easily occur. If it is too small, it may be difficult to exhibit the function of receiving and turning the drainage of the upright pipe, and thus it is difficult to exhibit the function.

この場合、特に前記傾斜板6により受け止められずに流下した立て管排水流を効率よく受け止め更に旋回力を付与するためには、上端部の取付け位置が低い方の旋回羽根の投影面積を、高い方の旋回羽根の投影面積より大きくすることが好ましい。このことは、必ずしも決まったことではないが、多くの場合、前記旋回羽根(B)9の排水用管継手の内面側への突出量が、前記旋回羽根(A)8の排水用管継手の内面側への突出量よりも大きいことを意味する。   In this case, in particular, in order to efficiently receive the drainage drainage flow that has flowed down without being received by the inclined plate 6, and to further apply a turning force, the projected area of the lower turning blade at the upper end mounting position is increased. It is preferable to make the projection area larger than the projection area of the turning blade. This is not necessarily fixed, but in many cases, the amount of protrusion of the swirling blade (B) 9 toward the inner surface side of the drainage fitting is determined by the amount of the drainage fitting of the swirling blade (A) 8. It means that it is larger than the amount of protrusion to the inner surface side.

以下に実施例および比較例を示すことにより、本発明を具体的に説明する。本発明は下記実施例のみに限定されるものではない。   Hereinafter, the present invention will be specifically described by showing Examples and Comparative Examples. The present invention is not limited only to the following examples.

実施例1〜3及び比較例1〜5として、図8に例示するような構造の排水用管継手を表1に示す仕様で作製し、性能評価を行った。各々の評価結果は表1に示した。   As Examples 1 to 3 and Comparative Examples 1 to 5, drainage pipe joints having the structure illustrated in FIG. 8 were manufactured according to the specifications shown in Table 1, and their performance was evaluated. The results of each evaluation are shown in Table 1.

実施例4、5として、図9に例示するような構造の排水用管継手を表1に示す仕様で作製し、性能評価を行った。各々の評価結果は表1に示した。   As Examples 4 and 5, drainage pipe joints having a structure as illustrated in FIG. 9 were manufactured according to the specifications shown in Table 1, and their performance was evaluated. The results of each evaluation are shown in Table 1.

Figure 2004169538
Figure 2004169538

表中、性能評価欄に記載の流入防止性については、◎印は目視で全く発生していないと認められる状態、○印は極少量あるがが実用上問題がないと認められる状態、×印は逆流が大量に発生している状態を示し、生産性については、◎印は生産効率が98%以上、○印は生産効率が95%以上であることを示し、コストについては、◎印は従来と同等以下、○印は従来より約10%以内のコストアップとなることを示す。又、管内での異物の詰まりは、目視により観察した結果である。   In the table, regarding the inflow prevention properties described in the performance evaluation column, ◎ indicates a state in which no occurrence is visually observed, 印 indicates a state in which there is a very small amount but no problem in practical use, and × indicates Indicates that a large amount of backflow has occurred. Regarding the productivity, 印 indicates that the production efficiency is 98% or more, ○ indicates that the production efficiency is 95% or more, and コ ス ト indicates the cost. Below, equivalent to the conventional, a circle indicates that the cost is increased by about 10% or less than the conventional. The clogging of the pipe with foreign matter is the result of visual observation.

表1から明らかなように、本発明の実施例においては、横枝管への流入防止性、生産性、コスト面で良好であり、圧力変動値も小さく、異物の詰まりもない良好な性能を示すことが判明した。   As is clear from Table 1, in the embodiment of the present invention, good performance in preventing inflow into the horizontal branch pipe, productivity and cost, small pressure fluctuation value, and no clogging of foreign matter is obtained. It turned out to show.

傾斜板と堰き止め板とを有し、旋回羽根がない排水用管継手の1例を示す模式図である。 (a)前記排水用管継手の1例における上面図である。 (b)前記排水用管継手の1例における側面図である。 (c)前記排水用管継手の1例におけるB−B断面図である。 (d)前記排水用管継手の1例におけるA−A断面図である。It is a schematic diagram which shows an example of the pipe fitting for drainage which has an inclined plate and a dam board, and does not have a turning blade. (A) It is a top view in an example of the said pipe joint for drainage. (B) It is a side view in an example of the said pipe joint for drainage. (C) It is BB sectional drawing in an example of the said pipe joint for drainage. (D) It is AA sectional drawing in an example of the said pipe joint for drainage. 傾斜板と堰き止め板とが、その下端部同士が略V字形状又はy字形状となるように接触又は接近している排水用管継手の1例を示す模式図である。 (a)前記排水用管継手の1例における上面図である。 (b)前記排水用管継手の1例における側面図である。 (c)前記排水用管継手の1例におけるB−B断面図である。 (d)前記排水用管継手の1例におけるA−A断面図である。It is a schematic diagram which shows an example of the drainage pipe joint in which the inclined board and the dam board contact or approach so that the lower end parts may become substantially V-shaped or y-shaped. (A) It is a top view in an example of the said pipe joint for drainage. (B) It is a side view in an example of the said pipe joint for drainage. (C) It is BB sectional drawing in an example of the said pipe joint for drainage. (D) It is AA sectional drawing in an example of the said pipe joint for drainage. 傾斜板と堰き止め板とがなす形状が、略V字形状又はy字形状の他の例を示す模式図である。 (a)傾斜板と堰き止め板とがV字形状で下端部同士が接触している場合の模式図。 (b)傾斜板と堰き止め板とがV字形状で下端部同士が接触していない場合の模式図。 (c)傾斜板と堰き止め板とがy字形状で傾斜板の下端部が堰き止め板に接触している場合の模式図。It is a schematic diagram which shows the example which the shape which an inclined plate and a damming plate make is substantially V-shaped or y-shaped. (A) Schematic diagram when the inclined plate and the dam plate are V-shaped and their lower ends are in contact with each other. (B) A schematic diagram in the case where the inclined plate and the dam plate are V-shaped and their lower ends are not in contact with each other. (C) A schematic diagram in the case where the inclined plate and the damming plate are in a Y-shape and the lower end of the inclined plate is in contact with the damming plate. 傾斜板と堰き止め板と旋回羽根(A)とを有する排水用管継手の1例を示す模式図である。 (a)前記排水用管継手の1例における上面図である。 (b)前記排水用管継手の1例における側面図である。 (c)前記排水用管継手の1例におけるB−B断面図である。 (d)前記排水用管継手の1例におけるA−A断面図である。It is a schematic diagram which shows an example of the pipe fitting for drainage which has an inclined board, a dam board, and a swirling blade (A). (A) It is a top view in an example of the said pipe joint for drainage. (B) It is a side view in an example of the said pipe joint for drainage. (C) It is BB sectional drawing in an example of the said pipe joint for drainage. (D) It is AA sectional drawing in an example of the said pipe joint for drainage. 傾斜板と堰き止め板と旋回羽根(A)と旋回羽根(B)とを有する排水用管継手の1例を示す模式図である。 (a)前記排水用管継手の1例における上面図である。 (b)前記排水用管継手の1例における側面図である。 (c)前記排水用管継手の1例におけるB−B断面図である。 (d)前記排水用管継手の1例におけるA−A断面図である。It is a schematic diagram which shows an example of the pipe joint for drainage which has an inclined plate, a dam board, a turning blade (A), and a turning blade (B). (A) It is a top view in an example of the said pipe joint for drainage. (B) It is a side view in an example of the said pipe joint for drainage. (C) It is BB sectional drawing in an example of the said pipe joint for drainage. (D) It is AA sectional drawing in an example of the said pipe joint for drainage. 傾斜板と旋回羽根(A)とを有し、堰き止め板がない排水用管継手の1例を示す模式図である。 (a)前記排水用管継手の1例における上面図である。 (b)前記排水用管継手の1例における側面図である。 (c)前記排水用管継手の1例におけるB−B断面図である。 (d)前記排水用管継手の1例におけるA−A断面図である。It is a schematic diagram which shows an example of the drainage pipe joint which has an inclined plate and a swirling blade (A), and has no damming plate. (A) It is a top view in an example of the said pipe joint for drainage. (B) It is a side view in an example of the said pipe joint for drainage. (C) It is BB sectional drawing in an example of the said pipe joint for drainage. (D) It is AA sectional drawing in an example of the said pipe joint for drainage. 傾斜板と旋回羽根(A)と旋回羽根(B)とを有し、堰き止め板がない排水用管継手の1例を示す模式図である。 (a)前記排水用管継手の1例における上面図である。 (b)前記排水用管継手の1例における側面図である。 (c)前記排水用管継手の1例におけるB−B断面図である。 (d)前記排水用管継手の1例におけるA−A断面図である。It is a schematic diagram which shows an example of the pipe fitting for drainage which has an inclined plate, a swirling blade (A), and a swirling blade (B), and has no damming plate. (A) It is a top view in an example of the said pipe joint for drainage. (B) It is a side view in an example of the said pipe joint for drainage. (C) It is BB sectional drawing in an example of the said pipe joint for drainage. (D) It is AA sectional drawing in an example of the said pipe joint for drainage. 傾斜板と堰き止め板と旋回羽根(A)と旋回羽根(B)とを有する排水用管継手の1例を示す模式図である。 (a)前記排水用管継手の1例における上面図である。 (b)前記排水用管継手の1例における側面図である。 (c)前記排水用管継手の1例におけるB−B断面図である。 (d)前記排水用管継手の1例におけるA−A断面図である。It is a schematic diagram which shows an example of the pipe joint for drainage which has an inclined plate, a dam board, a turning blade (A), and a turning blade (B). (A) It is a top view in an example of the said pipe joint for drainage. (B) It is a side view in an example of the said pipe joint for drainage. (C) It is BB sectional drawing in an example of the said pipe joint for drainage. (D) It is AA sectional drawing in an example of the said pipe joint for drainage. 図8の排水用管継手の別の一例で、3口の横枝管接続部が設けられた1例を示す模式図である。 (a)前記排水用管継手の1例における上面図である。 (b)前記排水用管継手の1例における側面図である。 (c)前記排水用管継手の1例におけるB−B断面図である。 (d)前記排水用管継手の1例におけるA−A断面図である。FIG. 9 is a schematic view showing another example of the drainage pipe joint of FIG. 8, in which three horizontal branch pipe connection portions are provided. (A) It is a top view in an example of the said pipe joint for drainage. (B) It is a side view in an example of the said pipe joint for drainage. (C) It is BB sectional drawing in an example of the said pipe joint for drainage. (D) It is AA sectional drawing in an example of the said pipe joint for drainage.

符号の説明Explanation of reference numerals

1 上部開口接続部
2 下部開口接続部
3 円筒部
4 テーパー筒部
5 横枝管接続部
6 傾斜板
7 堰き止め板
8 旋回羽根(A)
9 旋回羽根(B)
DESCRIPTION OF SYMBOLS 1 Upper opening connection part 2 Lower opening connection part 3 Cylindrical part 4 Tapered cylinder part 5 Horizontal branch pipe connection part 6 Inclined plate 7 Dam plate 8 Swirl vane (A)
9 swirl vane (B)

Claims (8)

排水立て管を接続するための上部及び下部開口接続部と、該上部開口接続部の下部につながる前記排水立て管よりも大径の円筒部と、該円筒部の下部に下向きに縮径されながら下部開口接続部につながるテーパー筒部と、前記円筒部の側部に設けられた少なくとも一口の横枝管接続部とから構成される排水用管継手において、立て管排水流を受け止め旋回させるための、管軸に対して傾斜した傾斜板と、該傾斜板により旋回された排水流が前記横枝管接続部に流入するのを防止するための堰き止め板とが、前記円筒部内側面に設けられたことを特徴とする排水用管継手。 An upper and lower opening connecting portion for connecting a drain stack, a cylindrical portion having a larger diameter than the drain stack connected to a lower portion of the upper opening connecting portion, and a diameter reduced to a lower portion of the cylindrical portion. A drain pipe joint composed of a tapered cylindrical portion connected to the lower opening connection portion and at least one mouthful horizontal branch pipe connection portion provided on a side portion of the cylindrical portion; An inclined plate inclined with respect to the pipe axis, and a damming plate for preventing a drain flow swirled by the inclined plate from flowing into the horizontal branch pipe connection portion are provided on the inner surface of the cylindrical portion. A pipe fitting for drainage characterized by the following. 上記傾斜板及び堰き止め板のいずれの上端部も前記横枝管接続部の上端部より高い位置に配置され、傾斜板下端部の位置において、傾斜板と堰き止め板との距離が0mm〜100mmとされていることを特徴とする請求項1に記載の排水用管継手。 The upper end of each of the inclined plate and the damming plate is disposed at a position higher than the upper end of the horizontal branch pipe connection portion. At the position of the lower end of the inclined plate, the distance between the inclined plate and the damming plate is 0 mm to 100 mm. The drainage pipe joint according to claim 1, wherein: 上記傾斜板及び堰き止め板のいずれの上端部も横枝管接続部の上端部より高い位置に設けられ、堰き止め板下端部の高さが傾斜板下端部の高さと同じ又は低くされていることを特徴とする請求項1又は2のいずれかに記載の排水用管継手。 The upper end of each of the inclined plate and the dam plate is provided at a position higher than the upper end of the horizontal branch pipe connection portion, and the height of the lower end of the dam plate is equal to or lower than the height of the lower end of the inclined plate. The drainage pipe joint according to claim 1, wherein: 前記横枝管接続部下端より低い位置に、前記傾斜板により受け止められずに流下した立て管排水流を受け止め旋回させるための管軸に対して傾斜板と同方向に傾斜した旋回羽根(A)が設けられたことを特徴とする請求項1〜3のいずれかに記載の排水用管継手。 A swirling blade (A) inclined in the same direction as the inclined plate with respect to a tube axis for receiving and rotating a standing drain water flow that has flowed down without being received by the inclined plate at a position lower than the lower end of the horizontal branch pipe connection portion. The drainage pipe joint according to any one of claims 1 to 3, wherein: 前記横枝管接続部下端より低い位置に、管軸に対して旋回羽根(A)と同方向に傾斜した、前記堰き止め板により流下した立て管排水流を受け止め旋回させるための旋回羽根(B)が設けられたことを特徴とする請求項4に記載の排水用管継手。 A swirl vane (B), which is inclined at the same position as the swirl vane (A) with respect to the pipe axis and receives and drains the drainage of a standing pipe drained by the dam plate, at a position lower than the lower end of the horizontal branch pipe connection part. 5. The drainage pipe joint according to claim 4, wherein a) is provided. 上記傾斜板下端部の高さ位置における傾斜板と堰き止め板との距離が0mmから100mmとされ、上記旋回羽根(A)の上端部が前記横枝管接続部下端部より低い位置となるように設けられていることを特徴とする請求項4又は5のいずれかに記載の排水用管継手。 The distance between the inclined plate and the dam plate at the height position of the lower end of the inclined plate is from 0 mm to 100 mm, and the upper end of the swirling blade (A) is located at a position lower than the lower end of the horizontal branch pipe connecting portion. The drainage pipe joint according to any one of claims 4 and 5, wherein the pipe joint is provided in a pipe. 排水立て管を接続するための上部及び下部開口接続部と、該上部開口接続部の下部につながる前記排水立て管よりも大径の円筒部、該円筒部の下部に下向きに縮径されながら下部開口接続部につながるテーパー筒部、及び前記円筒部の側部に設けられた少なくとも一口の横枝管接続部を有する排水用管継手において、上記円筒部内面に、立て管排水流を受け止め旋回させるための管軸に対して傾斜した傾斜板が、上端位置が横枝管接続部の上端より高くなるように設けられ、上記横枝管接続部下端より低い位置に、傾斜板により受け止められずに流下した立て管排水流を受け止め旋回させるための管軸に対して傾斜板と同方向に傾斜した旋回羽根(A)が設けられ、上記傾斜板の下端部と旋回羽根(A)の上端部との距離が50mm〜450mmとされていることを特徴とする排水用管継手。 An upper and lower opening connecting portion for connecting a drain stack, a cylindrical portion having a larger diameter than the drain stack connected to a lower portion of the upper opening connecting portion, and a lower portion which is reduced in diameter to a lower portion of the cylindrical portion and downward. In a drainage pipe joint having a tapered tubular portion connected to an opening connection portion and at least one horizontal branch pipe connection portion provided on a side portion of the cylindrical portion, a drainage flow of a standing pipe is received and turned on the inner surface of the cylindrical portion. An inclined plate inclined with respect to the pipe axis is provided so that the upper end position is higher than the upper end of the horizontal branch pipe connection portion, and is not received by the inclined plate at a position lower than the lower end of the horizontal branch pipe connection portion. A swirling blade (A) is provided which is inclined in the same direction as the inclined plate with respect to a tube axis for receiving and rotating the falling drainage drainage flow, and a lower end of the inclined plate and an upper end of the swirling blade (A) are provided. Distance is 50mm ~ 450 Drainage fitting, characterized in that there is a m. 前記横枝管接続部下端より低い位置に、前記堰き止め板により流下した立て管排水流を受け止め旋回させるための管軸に対して旋回羽根(A)と同方向に傾斜した旋回羽根(B)が設けられたことを特徴とする請求項7に記載の排水用管継手。
A swirl vane (B) inclined in the same direction as the swirl vane (A) with respect to a pipe axis for receiving and turning a drainpipe drainage flow that has flowed down by the blocking plate at a position lower than the lower end of the horizontal branch pipe connection part. The drainage pipe joint according to claim 7, wherein:
JP2003290622A 2002-10-31 2003-08-08 Pipe joint for drainage Pending JP2004169538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003290622A JP2004169538A (en) 2002-10-31 2003-08-08 Pipe joint for drainage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002318653 2002-10-31
JP2003290622A JP2004169538A (en) 2002-10-31 2003-08-08 Pipe joint for drainage

Publications (1)

Publication Number Publication Date
JP2004169538A true JP2004169538A (en) 2004-06-17

Family

ID=32715888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003290622A Pending JP2004169538A (en) 2002-10-31 2003-08-08 Pipe joint for drainage

Country Status (1)

Country Link
JP (1) JP2004169538A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006104762A (en) * 2004-10-05 2006-04-20 Noriatsu Kojima Drain pipe joint
JP2009144480A (en) * 2007-12-18 2009-07-02 Sekisui Chem Co Ltd Base joint and drain system using the same
JP2011084922A (en) * 2009-10-15 2011-04-28 Sekisui Chem Co Ltd Drain pipe joint
CN103469869A (en) * 2013-09-21 2013-12-25 苏州市吴中区曙光铜管厂 Anti-reflux water pipe
JP2017057634A (en) * 2015-09-17 2017-03-23 積水化学工業株式会社 Collection pipe joint
CN107012994A (en) * 2017-05-25 2017-08-04 中建八局第三建设有限公司 A kind of multilayer roof drainage system is with unpowered from device against overflow of water
JP2019112869A (en) * 2017-12-25 2019-07-11 積水化学工業株式会社 Drain pipe joint

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006104762A (en) * 2004-10-05 2006-04-20 Noriatsu Kojima Drain pipe joint
JP2009144480A (en) * 2007-12-18 2009-07-02 Sekisui Chem Co Ltd Base joint and drain system using the same
JP2011084922A (en) * 2009-10-15 2011-04-28 Sekisui Chem Co Ltd Drain pipe joint
CN103469869A (en) * 2013-09-21 2013-12-25 苏州市吴中区曙光铜管厂 Anti-reflux water pipe
JP2017057634A (en) * 2015-09-17 2017-03-23 積水化学工業株式会社 Collection pipe joint
CN107012994A (en) * 2017-05-25 2017-08-04 中建八局第三建设有限公司 A kind of multilayer roof drainage system is with unpowered from device against overflow of water
CN107012994B (en) * 2017-05-25 2022-05-03 中建八局第三建设有限公司 Unpowered self-anti-reverse-overflow device for multi-layer roof drainage system
JP2019112869A (en) * 2017-12-25 2019-07-11 積水化学工業株式会社 Drain pipe joint
JP7050483B2 (en) 2017-12-25 2022-04-08 積水化学工業株式会社 Drainage pipe fitting

Similar Documents

Publication Publication Date Title
US5752548A (en) Coupling for drainage pipings
JP2004169538A (en) Pipe joint for drainage
JP6371945B2 (en) Drain trap
JP5616568B2 (en) Leg joint and drainage system using the leg joint
JP3459041B2 (en) Drain pipe connection socket
JP2011117133A (en) Junction pipe joint for drainage
KR200403829Y1 (en) The drainpipe with preventive apparatus of noise
JP7474834B2 (en) Drain Pipe Fittings
JP3777612B2 (en) Drainage socket and flush toilet
CN111576580B (en) Drainage system
JP2009024412A (en) Joint for drain pipe
JP7290536B2 (en) Pipe fittings and drainage systems
JP4588810B2 (en) Drainage pipe fitting
JPH0885989A (en) Piping member for drainage
JPH01223229A (en) Drainage device
JP3322963B2 (en) Drainage pipe
JPH0885988A (en) Piping member for drainage
JP4471712B2 (en) Pipe for drainage
JPH0376941A (en) Collecting pipe joint
JP3486848B2 (en) Drainage stack fittings
JPH028427A (en) Assembly pipe joint
JP2004084294A (en) Confluent special joint
JPH0376942A (en) Collecting pipe joint
JP3459974B2 (en) Drainage method
JPH059961A (en) Draining device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060518

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080516

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090415

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20090818