JP3099228B2 - Drainage fitting - Google Patents
Drainage fittingInfo
- Publication number
- JP3099228B2 JP3099228B2 JP09155846A JP15584697A JP3099228B2 JP 3099228 B2 JP3099228 B2 JP 3099228B2 JP 09155846 A JP09155846 A JP 09155846A JP 15584697 A JP15584697 A JP 15584697A JP 3099228 B2 JP3099228 B2 JP 3099228B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- drainage
- upstream
- cross
- pipeline
- 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.)
- Expired - Fee Related
Links
Landscapes
- Sink And Installation For Waste Water (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は例えば集合住宅、ホ
テル等の建築物に付帯する排水配管の立て管と横枝管を
接続する排水集合継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage joint for connecting a vertical pipe and a horizontal branch pipe of a drainage pipe attached to a building such as an apartment house or a hotel.
【０００２】[0002]
【発明が解決しようとする課題】従来トラップ破封を引
起こす吸出し作用の対策として、通気管を多用したり、
排水管管径を大きくしたりしているが、いずれも省スペ
ース、施工性、経済性の各面で不利となる。Conventionally, as a countermeasure against the sucking action that causes the trap to be broken, a vent pipe is frequently used.
Although the diameter of the drainage pipe is increased, it is disadvantageous in terms of space saving, workability, and economy.
【０００３】また立て管内では水がかなり乱れた状態で
流れており、横枝管への水の逆流が起こり、この逆流現
象の対策を講じる必要がある。[0003] In addition, since water flows in a turbulent state in the standing pipe, a backflow of water to the horizontal branch pipe occurs, and it is necessary to take measures against this backflow phenomenon.
【０００４】本発明はトラップ破封を引起こす吸出し作
用の対策として排水集合継手を改良することにより省ス
ペース、施工性、経済性の各面をクリアし、同時に逆流
現象の対策にもなる改良された排水集合継手を提供する
ことを目的としている。[0004] The present invention improves the drainage joints as a countermeasure against the suction action that causes the trap to be broken, thereby clearing each aspect of space saving, workability, and economy, and at the same time, improving countermeasures against the backflow phenomenon. It is intended to provide a drainage collective joint.
【０００５】[0005]
【課題を解決するための手段】排水配管の立て管内を急
速に、且つ、かなり乱れた状態で落下する水によって横
枝管から立て管への排水流出口上周部に生じる負圧がト
ラップ封水に作用して封水損失を生じることから、この
負圧発生面積を縮小させるために、前記排水流出口上部
を塞ぐ壁を設ける。またこの壁によって排水流出口が上
流部の管路断面積より小となり詰まり等の不具合を発生
させるのを防止するために、継手本体における横枝管接
続部の管路中間部底面に下流部の管路底面より上流部の
管路底面が高位となるように段差を設け、下流部の管路
及び排水流出口を下方に拡大する。そして上流部の管路
に対して排水流出口が下方に位置ずれし、且つ、その上
流部の管路の手前に段差があるため、立て管から横枝管
への水の逆流が防止される。そして、上流部の管路断面
形状を円形状とし、下流部の断面形状を上流部の管路が
内円となる正方形の底辺を段差下端まで下げた縦長の四
角形状とし、壁を排水流出口上端から上流部の管路中心
高さまで塞ぐ面積を有する四角形として管路の排水流出
口を上流部の管路中心から段差下端までの高さを有する
四角形状とし、下流部の管路断面積を上流部の管路断面
積より大に形成し、排水流出口の開口面積を上流部の管
路断面積より大で、且つ、下流部の管路断面積より小に
形成することにより、上記の負圧発生面積を横枝管接続
部の管路断面積を下流側で減じることなく、最も縮小で
き、最も効率的なトラップ破封対策になると共に、横枝
管接続部の管路断面積を下流側で小さくできないという
制約がある中で最も効率的な逆流対策になり、効果的で
ある。The negative pressure generated in the upper peripheral portion of the drainage outlet from the horizontal branch pipe to the standpipe due to the water falling rapidly and in a considerably disturbed state in the drainpipe standpipe is trapped. Since it acts on water to cause sealing loss, in order to reduce the negative pressure generation area, a wall for closing the drain outlet is provided. Also, in order to prevent the drainage outlet from becoming smaller than the cross-sectional area of the pipeline in the upstream portion due to this wall, and to prevent problems such as clogging, the downstream portion of the downstream side portion of the horizontal branch pipe connecting portion in the joint body is connected to the bottom portion. A step is provided so that the pipe bottom in the upstream part is higher than the pipe bottom, and the pipe in the downstream part and the drain outlet are enlarged downward. And the drainage outlet is displaced downward with respect to the upstream pipeline, and there is a step in front of the upstream pipeline, so that backflow of water from the standing pipe to the horizontal branch pipe is prevented. . And the pipeline section of the upstream part
The shape is circular, and the cross-sectional shape of the downstream part is
A vertically long square with the base of the inner circle lowered to the bottom of the step
Square shape and wall centered at the upstream of the drain outlet
Drainage outflow of pipeline as a square with an area that blocks up to height
The mouth has a height from the center of the upstream pipeline to the lower end of the step
Square shape, and the cross-sectional area of the downstream section is
The drainage outlet opening area is larger than the pipe
Larger than the cross-sectional area of the pipe and smaller than the cross-sectional area of the downstream pipe
By forming, the above negative pressure generation area is connected to the horizontal branch pipe
The pipe section of the section is not reduced on the downstream side,
The most efficient trap opening measures
The pipe cross-sectional area at the pipe connection cannot be reduced downstream
It is the most efficient countercurrent
There is .
【０００６】また、壁上部に貫通孔を設けることによ
り、この貫通孔が通気孔となり、横枝管からの排水中の
異物等で排水流出口が塞がれるような場合でも、貫通孔
を介して通気を行わせ、自己吸出し作用によるトラップ
破封を防止すると共に、貫通孔部で生じる負圧を逆に利
用して排水流出口から立て管内の空気を横枝管接続部の
管路に取込むことで、より確実なトラップ破封対策とな
り有効である。Further, by providing a through hole in the upper part of the wall, the through hole becomes a ventilation hole, and even when the drain outlet is blocked by foreign matter or the like in the drain water from the horizontal branch pipe, the through hole is formed through the through hole. To prevent the trap from being broken by the self-sucking action, and use the negative pressure generated in the through-hole to reversely draw the air in the vertical pipe from the drain outlet into the pipe at the horizontal branch pipe connection. Incorporation is effective as a more reliable trap opening measure.
【０００７】また、貫通孔下方の壁端縁に凹み部を設け
ることにより、貫通孔と排水流出口との距離が短縮さ
れ、上記の空気取込み作用を円滑に行わしめ、有効であ
る。Further, by providing a recess at the edge of the wall below the through-hole, the distance between the through-hole and the drain outlet can be shortened, and the above-described air intake operation can be performed smoothly, which is effective.
【０００８】[0008]
【発明の実施の形態】以下本発明の実施例を図面に基づ
いて詳述する。図１は排水集合継手の合流部の断面図、
図２は排水配管図、図３は排水集合継手の横断面図、図
４は同Ａ−Ａ断面図、図５は同Ｂ−Ｂ断面図、図６は管
路の断面説明図、図７は継手端部の断面説明図であり、
例えば１０階建ての集合住宅における排水配管の概略を
図２に示してあり、平面的に略同じ位置にある各階の住
戸における便器、洗面器、台所流し、浴槽、洗濯機から
排出された水をトラップを含む器具排水管（図示省
略）、排水横枝管（１）の順序で１本の排水立て管
（２）へ導くように構成している。また立て管（２）の
下端は排水横主管（３）に接続されており、この横主管
（３）によって複数本の立て管（２）から排出された水
を会所ます（４）や汚水槽に導き、これら会所ます
（４）や汚水槽から敷地排水管（５）を介して下水管に
生活排水（汚水、雑水、雨水等）を排出するように構成
している。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of a junction of a drainage joint,
FIG. 2 is a drainage piping diagram, FIG. 3 is a transverse sectional view of a drainage joint, FIG. 4 is an AA sectional view, FIG. 5 is a BB sectional view, FIG. Is a cross-sectional explanatory view of the end of the joint,
For example, FIG. 2 shows an outline of drainage pipes in a ten-story apartment house, and water discharged from toilets, washbasins, kitchen sinks, bathtubs, and washing machines in dwelling units on each floor at substantially the same position in plan view. The device is configured to lead to one drainage stack (2) in the order of a drainage pipe including a trap (not shown) and a horizontal drainage pipe (1). The lower end of the standpipe (2) is connected to a drain horizontal main pipe (3), and the horizontal main pipe (3) collects water discharged from a plurality of standpipe (2) by a meeting place (4) and a sewage tank. It is configured to discharge domestic wastewater (sewage, sewage, rainwater, etc.) from these chambers (4) and sewage tanks to sewage pipes through site drainage pipes (5).
【０００９】そして、各階層の立て管（２）と横枝管
（１）とを後述する本発明に係る排水集合継手（６）に
よって接続すると共に、立て管（２）の下端基部を横主
管（３）に脚部継手（７）によって接続し、また立て管
（２）の上端を伸頂通気管（８）及びベンドキャップ
（９）を介して大気に開放し、一つの排水系を構成して
いる。The standing pipe (2) and the horizontal branch pipe (1) of each level are connected by a drainage joint (6) according to the present invention described later, and the lower end base of the standing pipe (2) is connected to the horizontal main pipe. It is connected to (3) by a leg joint (7), and the upper end of the standpipe (2) is opened to the atmosphere via a vent pipe (8) and a bend cap (9) to constitute one drainage system. doing.
【００１０】図３乃至図７に示す如く、排水配管用可と
う継手である排水集合継手（６）は円筒状の立て管接続
部（１０）と、該立て管接続部（１０）の壁面から略半
径方向に一体延設する横枝管接続部（１１）から成る継
手本体と、各接続部（１０）（１１）の端部に形成する
継手受け口部（１２）に排水用鋼管である立て管（２）
や横枝管（３）を接続するためのフランジ（１３）、パ
ッキン（１４）、複数組のボルト（１５）及びナット
（１６）から成る。尚、横枝管接続部（１１）は接続す
る横枝管（１）の本数、方向によって１乃至４が所定の
方向に設けられ、それぞれに下流側が低位となるように
所定の勾配が付けられている。As shown in FIGS. 3 to 7, a drainage joint (6), which is a flexible joint for drainage piping, includes a cylindrical standing pipe connection (10) and a wall of the standing pipe connection (10). A joint body consisting of a lateral branch pipe connection part (11) extending integrally in a substantially radial direction and a joint steel pipe (12) formed at the end of each of the connection parts (10) and (11) are drainage steel pipes. Tube (2)
(13), packing (14), and a plurality of sets of bolts (15) and nuts (16) for connecting the horizontal branch pipe (3). The horizontal branch pipe connecting portion (11) is provided with 1 to 4 in a predetermined direction according to the number and direction of the horizontal branch pipes (1) to be connected, and each of them is provided with a predetermined gradient so that the downstream side is low. ing.
【００１１】前記各継手受け口（１２）と横枝管（１）
又は立て管（２）との接続は、フランジ（１３）、パッ
キン（１４）の順序で横枝管（１）又は立て管（２）に
挿入し、このフランジ（１３）、パッキン（１４）を挿
入した横枝管（１）又は立て管（２）の端部を対応する
継手受け口（１２）に差込んだ後、ボルト（１５）を継
手受け口部（１２）側のボルト孔（１７）とフランジ
（１３）側のボルト孔（１８）に継手受け口部（１２）
側から差込み、フランジ（１３）側をナット（１６）で
締付けるもので、この締付け力と継手受け口部（１２）
内面のパッキン受け口底部（１９）のテーパによってパ
ッキン（１４）を管軸方向に圧縮して周方向に膨張させ
ることにより、継手受け口部（１２）内面と横枝管
（１）又は立て管（２）外面にパッキン（１４）を圧着
させ、継手受け口部（１２）からの横枝管（１）又は立
て管（２）の抜止めと、この間の気密保持を行い、各階
層ごとに立て管（２）同志の接続部において１乃至４本
の横枝管（１）を接続させるように構成している。Each of the joint receiving ports (12) and the horizontal branch pipe (1)
Alternatively, the connection with the standpipe (2) is performed by inserting the flange (13) and the packing (14) into the horizontal branch pipe (1) or the standpipe (2) in the order of the flange (13) and the packing (14). After inserting the inserted horizontal branch pipe (1) or the end of the standpipe (2) into the corresponding joint socket (12), the bolt (15) is connected to the bolt hole (17) on the joint socket (12) side. Fitting socket (12) in bolt hole (18) on flange (13) side
Side, and the flange (13) side is tightened with a nut (16). This tightening force and the joint socket (12)
The packing (14) is compressed in the pipe axis direction and expanded in the circumferential direction by the taper of the packing receiving base (19) on the inner surface, so that the inner surface of the joint receiving part (12) and the horizontal branch pipe (1) or the standing pipe (2) are compressed. ) A packing (14) is crimped on the outer surface to prevent the horizontal branch pipe (1) or the standing pipe (2) from being pulled out from the joint receiving port (12) and to maintain the airtightness between them, and the standing pipe ( 2) One to four horizontal branch pipes (1) are connected to each other at a connection part between them.
【００１２】そして、横枝管接続部（１１）の継手受け
口（１２）の底部（２０）から立て管接続部（１０）ま
での管路（Ａ）において、この管路（Ａ）の中間部底面
に下流部の管路（Ａ２）底面より上流部の管路（Ａ１）
底面が高位となるように段差（２１）を設けている。ま
た立て管接続部（１０）への排水流出口（２２）の上部
を塞ぐ壁（２３）を設けている。Then, in the pipe (A) from the bottom (20) of the joint receiving port (12) of the horizontal branch pipe connection (11) to the standpipe connection (10), an intermediate portion of the pipe (A) Downstream pipeline (A2) on bottom, upstream pipeline (A1) from bottom
A step (21) is provided so that the bottom surface is higher. In addition, a wall (23) is provided to close the upper part of the drain outlet (22) to the stack connection (10).
【００１３】また、上流部の管路（Ａ１）断面形状を接
続する横枝管（１）と略同じ呼び径の円形状とし、下流
部の管路（Ａ２）断面形状を上流部の管路（Ａ１）が内
円となる正方形の底辺を段差（２１）下端まで下げた縦
長の四角形状とし、立て管接続部（１０）の周壁をこの
壁面に沿って管路（Ａ）の排水流出口（２２）上部に一
体延設して設けた前記壁（２３）を、管軸方向視で排水
流出口（２２）上端から上流部の管路（Ａ１）中心高さ
まで塞ぐ面積を有する四角形状とし、排水流出口（２
２）を管軸方向視で上流部の管路（Ａ１）中心高さから
段差（２１）までの高さを有する四角形状とし、下流部
の管路（Ａ２）断面積（Ｘ２）を上流部の管路（Ａ１）
断面積（Ｘ１）より大に形成し、排水流出口（２２）の
開口面積（Ｘ３）を上流部の管路（Ａ１）断面積（Ｘ
１）より大で、且つ、下流部の管路（Ａ２）断面積（Ｘ
２）より小に形成している。Further, the cross section of the upstream pipe (A1) has a circular shape having substantially the same nominal diameter as that of the horizontal branch pipe (1), and the cross section of the downstream pipe (A2) has a cross section of the upstream pipe. (A1) is a vertically long rectangular shape with the bottom side of the square having an inner circle lowered to the lower end of the step (21), and the peripheral wall of the standing pipe connecting portion (10) is formed along the wall surface along the drainage outlet of the pipe (A). (22) The wall (23) integrally extended on the upper portion is formed in a square shape having an area that covers an area from the upper end of the drainage outlet (22) to the center of the upstream pipe (A1) in the pipe axis direction. , Drain outlet (2
2) has a square shape having a height from the center height of the upstream pipe (A1) to the step (21) in the pipe axial direction, and the downstream pipe (A2) has a cross-sectional area (X2) of the upstream pipe. Pipeline (A1)
The cross-sectional area (X1) is formed larger than the cross-sectional area (X1), and the opening area (X3) of the drain outlet (22) is set to the cross-sectional area (X1) of the upstream pipe (A1).
1) The cross-sectional area of the pipe (A2) which is larger and is downstream (X
2) It is formed smaller.
【００１４】また、上流部の管路（Ａ１）底面と下流部
の管路（Ａ２）底面との間に設けた前記段差（２１）は
管軸芯に対し略直角な面内に設けられる一方、その他の
上流部の管路（Ａ）と下流部の管路（Ａ２）との間の段
差（２４）は上部が下部より下流側に傾く傾斜面内に設
けられている。The step (21) provided between the bottom of the upstream pipe (A1) and the bottom of the downstream pipe (A2) is provided in a plane substantially perpendicular to the pipe axis. The other step (24) between the upstream pipeline (A) and the downstream pipeline (A2) is provided on an inclined surface whose upper part is inclined downstream from the lower part.
【００１５】また、壁（２３）の上部中央には横に長い
長円形の貫通孔（２５）を設けると共に、該貫通孔（２
５）下方の壁（２３）下縁に台形状の凹み部（２６）を
設けている。In the center of the upper part of the wall (23), an elongated oval through-hole (25) is provided horizontally, and the through-hole (2) is formed.
5) A trapezoidal recess (26) is provided on the lower edge of the lower wall (23).
【００１６】排水集合継手（６）の横枝管接続部（１
１）を上記のような構造とすることにより、吸出し作用
によるトラップ破封が防止できるものである。即ち、ト
ラップ破封は各階層の横枝管（１）からの水が立て管
（２）に流込み、立て管（２）内を急速に、且つ、かな
り乱れた状態で落下し、下階層の継手（６）内の立て排
水と横排水の合流部（２７）を通過するとき、排水流出
口（２２）の上周部に負圧を生じさせ、この負圧がトラ
ップ封水にまで作用して封水損失を生じるのであるが、
管路（Ａ）の断面形状が端から端まで従来のように円形
状で、排水流出口（２２）も管路（Ａ）と略同じ円形状
である場合、排水流出口（２２）の周長の上半分で負圧
が生じることになるが、本発明では合流部（２７）側か
ら管路（Ａ）内を見ると、前記負圧発生長さを壁（２
３）によって上流部の管路（Ａ１）の直径長さにまで減
じており、且つ、この減少割合いは管路（Ａ）の断面積
を下流側で小さくできないという制約がある中では最大
となる。また合流部（２７）側から管路（Ａ）内を見た
場合、上流部の管路（Ａ１）の中心高さに壁（２３）の
下縁、つまり排水流出口（２２）の上縁が位置し、排水
流出口（２２）上部の壁（２３）背面側に大きな空間が
存在することによって排水流出口（２２）の上縁に負圧
が生じ難く、且つ、負圧が生じても管内圧力変動が上流
側に伝わり難くなる。従って排水流出口（２２）では殆
ど負圧が生じず、トラップ破封が防止される。The horizontal branch pipe connecting portion (1) of the drainage collecting joint (6)
By adopting the structure 1) as described above, it is possible to prevent the trap from being broken by the sucking action. That is, the trap breach is caused by the water from the horizontal branch pipe (1) of each level flowing into the stack pipe (2), falling quickly and considerably in a turbulent state in the stack pipe (2), and lowering the trap. When passing through the junction (27) of vertical drainage and horizontal drainage in the joint (6), a negative pressure is generated at the upper peripheral portion of the drainage outlet (22), and this negative pressure acts on the trap sealing water. Water loss due to
When the cross-sectional shape of the pipe (A) is circular from end to end as in the related art, and the drain outlet (22) is also substantially the same circular shape as the pipe (A), the circumference of the drain outlet (22) Negative pressure is generated in the upper half of the length. In the present invention, when the inside of the pipe (A) is viewed from the junction (27) side, the negative pressure generation length is changed to the wall (2).
According to 3), the diameter is reduced to the diameter of the upstream pipe (A1), and the rate of this reduction is the maximum in the presence of the restriction that the cross-sectional area of the pipe (A) cannot be reduced on the downstream side. Become. When the inside of the pipeline (A) is viewed from the junction (27) side, the lower edge of the wall (23), that is, the upper edge of the drain outlet (22) is located at the center height of the upstream pipeline (A1). , And a large space exists on the back side of the upper wall (23) of the drain outlet (22), so that a negative pressure is hardly generated at the upper edge of the drain outlet (22), and even if a negative pressure is generated. It becomes difficult for the pressure fluctuation in the pipe to be transmitted to the upstream side. Therefore, almost no negative pressure is generated at the drain outlet (22), and trap opening is prevented.
【００１７】また、前記壁（２３）によって排水流出口
（２２）がこれより上流部の管路（Ａ）断面積より小と
なると詰まり等が容易に発生するが、本発明が上流部の
管路（Ａ１）断面積（Ｘ１）が最も小さく排水流出口
（２２）の開口面積（Ｘ３）、下流部の管路（Ａ２）断
面積（Ｘ２）の順序で逆に管路（Ａ）の断面積が上流側
に比べて下流側を大きくしているから（Ｘ１＜Ｘ３＜Ｘ
２）、上記の詰まり等の不都合を発生させることがな
い。If the drainage outlet (22) is smaller than the cross-sectional area of the pipe (A) upstream from the wall (23), clogging or the like easily occurs. Conversely, the pipe (A) is cut in the reverse order of the cross-sectional area (X1) of the channel (A1), the opening area (X3) of the drain outlet (22), and the cross-sectional area (X2) of the downstream pipe (A2). Because the area is larger on the downstream side than on the upstream side (X1 <X3 <X
2) Inconveniences such as the above-mentioned clogging do not occur.
【００１８】そして、上流部の管路（Ａ１）に対して排
水流出口（２２）が下方に位置ずれすることにより、位
置ずれしていない従来構造のものに比べて、立て管
（２）から管路（Ａ）内への水の侵入角度が同じでも管
路（Ａ）内への侵入長さが減り、且つ、上流部の管路
（Ａ１）の手前には底面段差（２１）とそれ以外の周面
段差（２４）があるため、立て管（２）から横枝管
（１）への水の逆流が管路（Ａ）内で防止できる。The drainage outlet (22) is displaced downward with respect to the pipeline (A1) in the upstream part, so that the drainage outlet (22) is displaced from the standpipe (2) in comparison with the conventional structure in which the drainage outlet is not displaced. Even if the angle of water entry into the pipe (A) is the same, the length of entry into the pipe (A) is reduced, and the bottom surface step (21) is located in front of the upstream pipe (A1). Since there is a peripheral step (24) other than the above, the backflow of water from the standing pipe (2) to the horizontal branch pipe (1) can be prevented in the pipeline (A).
【００１９】また、横枝管（１）が略満水状態となる排
水量であっても本発明では上記の如く上流部の管路（Ａ
１）断面積（Ｘ１）と下流部の管路（Ａ２）断面積（Ｘ
２）と排水流出口（２２）の開口面積（Ｘ３）の大小関
係を（Ｘ１＜Ｘ３＜Ｘ２）としているため、通常排水で
は下流部の管路（Ａ２）及び排水流出口（２２）を塞ぐ
ことは殆どなく、横枝管（１）及び管路（Ａ）の通気を
確保できるが、排水に布や綿やビニール等の異物が混入
している場合、排水流出口（２２）が排水中の異物で一
時的に塞がれることがある。排水流出口（２２）が塞が
れてしまうと横枝管（１）及び管路（Ａ）の通気を確保
できなくなり、自己吸出し作用によるトラップ破封を引
起してしまうが、本発明では排水及び排水中の異物によ
って塞がれることがない貫通孔（２５）を壁（２３）に
設けているため、この貫通孔（２５）が通気孔となり、
横枝管（１）及び管路（Ａ）の通気を確保でき、自己吸
出し作用によるトラップ破封も防止している。In the present invention, even if the drainage amount is such that the horizontal branch pipe (1) is substantially full, the upstream pipe (A)
1) The cross-sectional area (X1) and the cross-sectional area (X
Since the size relationship between (2) and the opening area (X3) of the drain outlet (22) is set to (X1 <X3 <X2), the downstream pipe (A2) and the drain outlet (22) are closed in the normal drainage. There is almost no problem, and the ventilation of the horizontal branch pipe (1) and the pipe (A) can be ensured. However, when foreign matter such as cloth, cotton, and vinyl is mixed in the drainage, the drain outlet (22) is draining. May be temporarily blocked by foreign matter. If the drain outlet (22) is closed, ventilation of the horizontal branch pipe (1) and the pipe (A) cannot be ensured, and the trap is opened by a self-sucking action. In addition, since the wall (23) is provided with a through hole (25) which is not blocked by the foreign matter in the drainage, the through hole (25) becomes a ventilation hole,
The ventilation of the lateral branch pipe (1) and the pipe (A) can be ensured, and the trap opening due to the self-sucking action is also prevented.
【００２０】また、前記貫通孔（２５）部ではトラップ
破封を引起こすことがない負圧が生じる。この負圧は排
水流出口（２２）から継手（６）の合流部（２７）の空
気を管路（Ａ）に取込み、これによっても排水流出口
（２２）部に負圧を生じるのを防止している。Further, a negative pressure is generated in the through-hole (25) so as not to cause trap breakage. This negative pressure takes in the air at the junction (27) of the joint (6) from the drain outlet (22) into the pipe (A), thereby preventing the negative pressure from being generated at the drain outlet (22) as well. doing.
【００２１】また、前記貫通孔（２５）と壁（２３）下
縁までの距離、つまり排水流出口（２２）までの距離が
両側部に比べて短縮されており、上記空気取込み作用を
円滑に行えるようになっている。Further, the distance between the through hole (25) and the lower edge of the wall (23), that is, the distance to the drain outlet (22) is shorter than that of both sides, so that the above-mentioned air intake action can be smoothly performed. You can do it.
【００２２】従って、本発明における排水集合継手にお
いてはトラップ破封と逆流現象を同時に防止することが
できるのである。Therefore, in the drainage joint according to the present invention, the trap breaking and the backflow phenomenon can be prevented at the same time.
【００２３】[0023]
【発明の効果】以上実施例から明らかなように本発明
は、排水立て管（２）と排水横枝管（１）を接続する排
水集合継手において、継手本体における横枝管接続部
（１１）の管路（Ａ）中間部底面に下流部の管路（Ａ
２）底面より上流部の管路（Ａ１）底面が高位となるよ
うに段差（２１）を設けると共に、立て管（２）への排
水流出口（２２）上部を塞ぐ壁（２３）を設けたもの
で、排水集合継手の改良によって省スペース、施工性、
経済性を損うことなく、トラップ破封並びに逆流を防止
することができる。そして、上流部の管路（Ａ１）断面
形状を円形状とし、下流部の管路（Ａ２）断面形状を上
流部の管路（Ａ１）が内円となる正方形の底辺を段 差
（２１）下端まで下げた縦長の四角形状とし、壁（２
３）を排水流出口（２２）上端から上流部の管路（Ａ
１）中心高さまで塞ぐ面積を有する四角形状として排水
流出口（２２）を上流部の管路（Ａ１）中心高さから段
差（２１）下端までの高さを有する四角形状とし、下流
部の管路（Ａ２）断面積（Ｘ２）を上流部の管路（Ａ
１）断面積（Ｘ１）より大に形成し、排水流出口（２
２）の開口面積（Ｘ３）を上流部の管路（Ａ１）断面積
（Ｘ１）より大で、且つ、下流部の管路（Ａ２）断面積
（Ｘ２）より小に形成することにより、トラップ破封並
びに逆流を横枝管接続部（１１）の管路（Ａ）断面積を
下流側で小にできないという制約がある中で最も効率的
に防止できる。As is apparent from the above embodiments, the present invention relates to a drainage joint for connecting a drainage stack (2) and a drainage horizontal branch (1), and a horizontal branch connection (11) in the joint body. (A) The downstream pipeline (A
2) A step (21) is provided so that the bottom of the pipeline (A1) upstream from the bottom is higher, and a wall (23) is provided to close the drain outlet (22) to the standpipe (2). And space saving, workability,
Trap opening and backflow can be prevented without impairing economics. And the cross section of the pipeline (A1) in the upstream part
The shape is circular, and the cross-sectional shape of the downstream pipeline (A2) is upward.
Stage difference bottom square duct flow portion (A1) is an inner circle
(21) A vertically long rectangular shape lowered to the lower end, and the wall (2
3) Connect the drainage pipe (A) to the pipe (A)
1) Drainage as a square shape with an area that covers the height of the center
The outlet (22) is set at a height from the center height of the pipeline (A1) in the upstream section.
Difference (21) A square with a height up to the lower end, and downstream
Section (A2) of the upstream section (A2)
1) It is formed larger than the cross-sectional area (X1), and the drainage outlet (2
The opening area (X3) of 2) is the cross-sectional area of the pipeline (A1) in the upstream part.
(X1) Larger and cross-sectional area of pipe (A2) at downstream
By forming smaller than (X2), the trap is broken
The cross section of the pipe (A) of the horizontal branch pipe connection (11)
The most efficient, despite the restriction that it cannot be reduced downstream
Can be prevented .
【００２４】また、壁（２３）上部に貫通孔（２５）を
設けることにより、自己吸出し作用によるトラップ破封
を防止できると共に、吸出し作用によるトラップ破封を
より確実に防止できる。Further, by providing the through-hole (25) above the wall (23), it is possible to prevent the trap from being opened by the self-sucking action and to more reliably prevent the trap from being opened by the sucking action.
【００２５】また、貫通孔（２５）下方の壁（２３）端
縁に凹み部（２６）を設けることにより、貫通孔（２
５）によるトラップ破封防止効果をより効果的に得るこ
とができる。Further, by providing a recess (26) at the edge of the wall (23) below the through hole (25), the through hole (2) is formed.
The trap opening prevention effect according to 5) can be more effectively obtained.
【図１】排水集合継手の合流部の断面図。FIG. 1 is a cross-sectional view of a junction of a drainage joint.
【図２】排水配管図。FIG. 2 is a drainage piping diagram.
【図３】排水集合継手の横断面図。FIG. 3 is a transverse sectional view of a drainage joint.
【図４】図３のＡ−Ａ断面図。FIG. 4 is a sectional view taken along line AA of FIG. 3;
【図５】図３のＢ−Ｂ断面図。FIG. 5 is a sectional view taken along line BB of FIG. 3;
【図６】管路の断面説明図。FIG. 6 is an explanatory sectional view of a pipeline.
【図７】継手端部の断面説明図。FIG. 7 is an explanatory sectional view of a joint end.
（１） 排水横枝管 （２） 排水立て管 （６） 排水集合継手 （１１） 横枝管接続部 （２１） 段差 （２２） 排水流出口 （２３） 壁 （２５） 貫通孔 （２６） 凹み部 （２７） 合流部 （Ａ） 管路 （Ａ１） 上流部の管路 （Ａ２） 下流部の管路 （Ｘ１） 上流部の管路断面積 （Ｘ２） 下流部の管路断面積 （Ｘ３） 排水流出口の開口面積 (1) Drain horizontal branch pipe (2) Drain stack pipe (6) Drainage joint (11) Horizontal branch pipe connection (21) Step (22) Drain outlet (23) Wall (25) Through hole (26) Concave Part (27) Confluence part (A) Pipe line (A1) Pipe line of upstream part (A2) Pipe line of downstream part (X1) Cross-sectional area of pipe part of upstream part (X2) Cross-sectional area of pipe part of downstream part (X3) Drain outlet opening area
Claims (3)
接続する排水集合継手において、継手本体における横枝
管接続部（１１）の管路（Ａ）中間部底面に下流部の管
路（Ａ２）底面より上流部の管路（Ａ１）底面が高位と
なるように段差（２１）を設けると共に、立て管（２）
への排水流出口（２２）上部を塞ぐ壁（２３）を設け、
上流部の管路（Ａ１）断面形状を円形状とし、下流部の
管路（Ａ２）断面形状を上流部の管路（Ａ１）が内円と
なる正方形の底辺を段差（２１）下端まで下げた縦長の
四角形状とし、壁（２３）を排水流出口（２２）上端か
ら上流部の管路（Ａ１）中心高さまで塞ぐ面積を有する
四角形状として排水流出口（２２）を上流部の管路（Ａ
１）中心高さから段差（２１）下端までの高さを有する
四角形状とし、下流部の管路（Ａ２）断面積（Ｘ２）を
上流部の管路（Ａ１）断面積（Ｘ１）より大に形成し、
排水流出口（２２）の開口面積（Ｘ３）を上流部の管路
（Ａ１）断面積（Ｘ１）より大で、且つ、下流部の管路
（Ａ２）断面積（Ｘ２）より小に形成したことを特徴と
する排水集合継手。1. A drainage joint for connecting a drainage stack (2) and a horizontal drainage branch (1), wherein a downstream portion is formed on the bottom surface of an intermediate portion of the pipe (A) of the horizontal branch connection (11) in the joint body. A step (21) is provided so that the bottom of the pipeline (A1) upstream of the bottom of the pipeline (A2) is higher than the bottom of the pipeline (A2).
A wall (23) for closing the drainage outlet (22) to the top ,
The cross-sectional shape of the pipeline (A1) in the upstream portion is circular,
The cross-sectional shape of the pipe (A2) is such that the pipe (A1) at the upstream portion is an inner circle.
Vertically long with the bottom of the square
Make the wall (23) the upper end of the drain outlet (22)
Has an area to block up to the center of the pipeline (A1) at the upstream
The drain outlet (22) is formed in a square shape and the upstream pipe (A
1) The height from the center height to the step (21) lower end
Make the pipe (A2) cross-sectional area (X2) of the downstream part
Formed larger than the cross-sectional area (X1) of the pipeline (A1) in the upstream portion,
Connect the opening area (X3) of the drain outlet (22) to the upstream pipe
(A1) Pipeline larger than cross-sectional area (X1) and downstream
(A2) A drainage collective joint formed to be smaller than the cross-sectional area (X2) .
排水集合継手。2. The drainage collective joint according to claim 1, wherein a through hole is provided in an upper portion of the wall.
求項２記載の排水集合継手。3. The drainage joint according to claim 2, wherein a concave portion is provided at an edge of the wall below the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09155846A JP3099228B2 (en) | 1997-05-28 | 1997-05-28 | Drainage fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09155846A JP3099228B2 (en) | 1997-05-28 | 1997-05-28 | Drainage fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10331220A JPH10331220A (en) | 1998-12-15 |
| JP3099228B2 true JP3099228B2 (en) | 2000-10-16 |
Family
ID=15614785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09155846A Expired - Fee Related JP3099228B2 (en) | 1997-05-28 | 1997-05-28 | Drainage fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3099228B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4213322B2 (en) * | 2000-02-15 | 2009-01-21 | 株式会社クボタ | Pipe for drainage |
-
1997
- 1997-05-28 JP JP09155846A patent/JP3099228B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10331220A (en) | 1998-12-15 |
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