JP6936423B2

JP6936423B2 - Drainage piping

Info

Publication number: JP6936423B2
Application number: JP2016038383A
Authority: JP
Inventors: 大輔服部
Original assignee: 丸一株式会社
Priority date: 2016-02-29
Filing date: 2016-02-29
Publication date: 2021-09-15
Anticipated expiration: 2036-02-29
Also published as: JP2017155455A

Description

本発明は、槽体の排水配管に関するものであって、槽体底面に設けられた排水口からの排水を行う主排水管と、槽体側面に設けられた側面排水口からの排水を行う枝排水管と、からなる排水配管において、側面排水口に排水中の泡が逆流することを防ぐ機能を備えた排水配管に関するものである。 The present invention relates to a drainage pipe of a tank body, and a main drainage pipe for draining water from a drainage port provided on the bottom surface of the tank body and a branch for draining water from a side drainage port provided on the side surface of the tank body. The present invention relates to a drainage pipe composed of a drainage pipe and a drainage pipe having a function of preventing bubbles in the drainage from flowing back to a side drainage port.

従来より、洗面台や流し台、浴槽などの槽体に対して、槽体内部の吐水を排出するために、槽体の底面に排水口を設け、この排水口からパイプ管等からなる主排水管を介し、下水側に繋がる床下配管へ排水を行う構造が知られている。また、上記槽体において、必要に応じ、排水口を閉塞して槽体内に吐水を溜める場合がある。この場合に、槽体内に継続して吐水を行うと、最終的には槽体上縁から槽体内の吐水が溢れてしまうため、特許文献１に記載の槽体のように、槽体の側面であって上縁近傍に側面排水口を設けて、この側面排水口から槽体内の排水を排出し、吐水が溢れることを防止する構造も良く知られている。
上記側面排水口からの配管は、ホース管等を利用した枝排水管を介して槽体底面の排水口から床下配管に繋がる主排水管に略Ｔ字形状を成す枝付き管を利用して枝管接続するように構成され、これにより、槽体内の吐水は、側面排水口、枝排水管、枝付き管、主排水管の順に流れ、最終的には下水側の床下配管に排出することができる。
尚、この特許文献１に記載の排水配管においては、枝付き管の上下に延出された縦管部の内部に排水口からの配管を同心円状に収納してなり、排水口からの配管の側面に設けた開口を介して、枝排水管からの排水を主排水管に流入するように構成してなる。 Conventionally, in order to drain water discharged from the inside of a tank body such as a wash basin, a sink, or a bathtub, a drain port is provided on the bottom surface of the tank body, and a main drain pipe consisting of a pipe pipe or the like is provided from this drain port. A structure is known in which drainage is performed to an underfloor pipe connected to the sewage side via a pipe. Further, in the above tank body, if necessary, the drain port may be closed to collect spouted water in the tank body. In this case, if water is continuously discharged into the tank, the water discharged from the tank will eventually overflow from the upper edge of the tank, so that the side surface of the tank is similar to the tank described in Patent Document 1. It is also well known that a side drainage port is provided near the upper edge to drain the drainage in the tank from the side drainage port to prevent the spouting water from overflowing.
The piping from the side drainage port is a branch using a branch drainage pipe using a hose pipe or the like, and a branch pipe having a substantially T shape is connected to the main drainage pipe connecting the drainage port on the bottom of the tank body to the underfloor pipe. It is configured to connect pipes, so that the water discharged from the tank can flow in the order of the side drain, the branch drain, the branch pipe, and the main drain, and finally drain to the underfloor pipe on the sewage side. can.
In the drainage pipe described in Patent Document 1, the pipes from the drainage port are concentrically stored inside the vertical pipe portion extending above and below the branched pipe, and the pipe from the drainage port is connected. The drainage from the branch drainage pipe is configured to flow into the main drainage pipe through the opening provided on the side surface.

特開２００９−７４２５０号JP-A-2009-74250

上記のような特許文献１に記載の槽体の排水配管の場合、以下に記載するような問題点があった。
槽体内からの排水には、石鹸や洗剤などに由来する泡が混じる場合が多い。洗面台の場合では手洗いや一部の洗濯物のうち汚れの激しい部位の汚れを取り去る為に特に洗面台で洗う場合があり、この時の石鹸や洗剤に由来する泡が排水に混じる場合がある。また、流し台の場合では、食器を洗った際の洗剤に由来する泡が排水に混じる場合がある。
また、浴槽の場合には入浴後に、浴槽内を洗う場合に使用した洗剤に由来する泡が排水に混じる場合がある。
これらの泡混じりの排水も、上記したように、槽体底面の排水口から主排水管を介して下水側に繋がる床下配管に排出が行われるが、この際に、排水に比べて比重が軽い泡が、主配管内部に留まり、更には枝付き管及び枝排水管を介して側面排水口から槽体内に逆流を生じる場合があった。
上記問題点を解決するため、特許文献１に記載の発明では、排水口からの配管の側面に設けた開口を閉塞する可動式の壁面を設け、排水口が開口するときは壁面により側面排水口からの排水流路を閉口するようにし、上記した泡の逆流の防止を行っている。
しかしながら、上記特許文献１に記載の発明では、排水口を成す管体内面に、可動式の壁面が接しながら上下動するため、摩擦が大きくなり、可動式の壁面の動作が困難である、という問題があった。
また、排水口を閉口する蓋部材に、可動式の壁面を連動するように構成したため、可動式の壁面の動作に不具合が生じると、そのまま蓋部材の排水口への閉口にも不具合が生じ、排水口から漏水が生じる、といった問題があった。
本発明は上記問題点に鑑み発明されたものであって、排水口からの配管に、側面排水口からの配管を接続した排水配管において、排水口から泡まじりの排水を流した場合に、側面
排水口から泡が逆流することを容易且つ確実に防止する排水配管に関するものである。 In the case of the drainage pipe of the tank body described in Patent Document 1 as described above, there are the problems described below.
The drainage from the tank is often mixed with bubbles derived from soap and detergent. In the case of a wash basin, it may be washed by hand or in order to remove dirt from a part of the laundry that is heavily soiled, and bubbles derived from soap and detergent at this time may be mixed in the drainage. .. Further, in the case of a sink, bubbles derived from the detergent when washing the dishes may be mixed in the drainage.
Further, in the case of a bathtub, after bathing, bubbles derived from the detergent used for washing the inside of the bathtub may be mixed with the drainage.
As described above, the drainage mixed with bubbles is also discharged from the drainage port on the bottom of the tank body to the underfloor pipe connected to the sewage side via the main drainage pipe, but at this time, the specific gravity is lighter than the drainage. In some cases, the bubbles stayed inside the main pipe and further flowed back into the tank from the side drainage port via the branch pipe and the branch drain pipe.
In order to solve the above problem, in the invention described in Patent Document 1, a movable wall surface for closing the opening provided on the side surface of the pipe from the drain port is provided, and when the drain port opens, the side drain port is provided by the wall surface. The drainage flow path from the above is closed to prevent the above-mentioned backflow of bubbles.
However, in the invention described in Patent Document 1, since the movable wall surface moves up and down while being in contact with the inner surface of the pipe forming the drain port, friction increases and it is difficult to operate the movable wall surface. There was a problem.
Further, since the movable wall surface is configured to be interlocked with the lid member that closes the drainage port, if a problem occurs in the operation of the movable wall surface, a problem also occurs in closing the lid member to the drainage port as it is. There was a problem that water leaked from the drain.
The present invention has been invented in view of the above problems, and in a drainage pipe in which a pipe from a side drainage port is connected to a pipe from a drainage port, a side surface when a foamy drainage is flowed from the drainage port. It relates to a drainage pipe that easily and surely prevents bubbles from flowing back from a drainage port.

請求項１に記載の本発明は、槽体の底面に設けられた排水口と、槽体の側面に設けられた側面排水口と、排水口からの排水を下水側に排出する主排水管と、側面排水口からの排水を主排水管の途中部分に排出する枝排水管と、常時閉塞して排水口からの泡の逆流が側面排水口に生じることを防止すると共に、側面排水口から排水を生じた場合のみ開口して主排水管側への通水を行う逆流防止弁を備え、枝排水管は、主排水管と側面排水口を繋ぐホース管を有し、逆流防止弁はホース管よりも主排水管側に取り付けられてなる槽体の排水配管において、
主排水管に沿って設けられる管体である主管部、該主管部の側面から延出された枝管部、からなる枝付き管を備え、枝付き管の主管部は主排水管側に、枝管部は側面排水口からの配管に、それぞれ接続されると共に、枝管部内に逆流防止弁を備えたことを特徴とする排水配管である。
According to the first aspect of the present invention, a drainage port provided on the bottom surface of the tank body, a side drainage port provided on the side surface of the tank body, and a main drainage pipe for discharging drainage from the drainage port to the sewage side. , A branch drainage pipe that discharges drainage from the side drainage port to the middle part of the main drainage pipe, and a branch drainage pipe that is constantly closed to prevent backflow of bubbles from the drainage port from occurring at the side drainage port and drainage from the side drainage port. The branch drainage pipe has a hose pipe that connects the main drainage pipe and the side drainage port, and the backflow prevention valve is a hose pipe. In the drainage pipe of the tank body that is attached to the main drainage pipe side
It is provided with a branched pipe consisting of a main pipe portion that is a pipe body provided along the main drain pipe and a branch pipe portion extending from the side surface of the main pipe portion, and the main pipe portion of the branched pipe is on the main drain pipe side. The branch pipe portion is a drainage pipe characterized in that it is connected to each pipe from the side drainage port and has a check valve inside the branch pipe portion.

請求項２に記載の本発明は、槽体の底面に設けられた排水口と、槽体の側面に設けられた側面排水口と、排水口からの排水を下水側に排出する主排水管と、側面排水口からの排水を主排水管の途中部分に排出する枝排水管と、常時閉塞して排水口からの泡の逆流が側面排水口に生じることを防止すると共に、側面排水口から排水を生じた場合のみ開口して主排水管側への通水を行う逆流防止弁を備え、枝排水管は、主排水管と側面排水口を繋ぐホース管を有し、逆流防止弁はホース管よりも主排水管側に取り付けられてなる槽体の排水配管において、
主排水管に沿って設けられる管体である主管部、該主管部の側面から延出された枝管部、からなる枝付き管を備え、枝付き管の主管部は主排水管側に、枝管部は側面排水口からの配管に、それぞれ接続されると共に、枝管部の端部に、逆流防止弁を備えた継手管を接続することを特徴とする排水配管である。
According to the second aspect of the present invention, a drainage port provided on the bottom surface of the tank body, a side drainage port provided on the side surface of the tank body, and a main drainage pipe for discharging drainage from the drainage port to the sewage side. , A branch drainage pipe that discharges drainage from the side drainage port to the middle part of the main drainage pipe, and a branch drainage pipe that is constantly closed to prevent backflow of bubbles from the drainage port from occurring at the side drainage port and drainage from the side drainage port. The branch drainage pipe has a hose pipe that connects the main drainage pipe and the side drainage port, and the backflow prevention valve is a hose pipe. In the drainage pipe of the tank body that is attached to the main drainage pipe side
It is provided with a branched pipe consisting of a main pipe portion that is a pipe body provided along the main drain pipe and a branch pipe portion extending from the side surface of the main pipe portion, and the main pipe portion of the branched pipe is on the main drain pipe side. The branch pipe portion is a drainage pipe characterized in that it is connected to each pipe from the side drain port and a joint pipe provided with a check valve is connected to the end portion of the branch pipe portion.

請求項３に記載の本発明は、槽体の底面に設けられた排水口と、槽体の側面に設けられた側面排水口と、排水口からの排水を下水側に排出する主排水管と、側面排水口からの排水を主排水管の途中部分に排出する枝排水管と、常時閉塞して排水口からの泡の逆流が側面排水口に生じることを防止すると共に、側面排水口から排水を生じた場合のみ開口して主排水管側への通水を行う逆流防止弁を備え、枝排水管は、主排水管と側面排水口を繋ぐホース管を有し、逆流防止弁はホース管よりも主排水管側に取り付けられてなる槽体の排水配管において、
前記逆流防止弁の弁体の開き角度に制限を行い、弁体を通過した排水が、弁体に対向する管体の壁面に対して略４５度よりも小さい角度にて衝突するようにしたことを特徴とする排水配管である。 According to the third aspect of the present invention, a drainage port provided on the bottom surface of the tank body, a side drainage port provided on the side surface of the tank body, and a main drainage pipe for discharging drainage from the drainage port to the sewage side. , A branch drainage pipe that discharges drainage from the side drainage port to the middle part of the main drainage pipe, and a branch drainage pipe that is constantly closed to prevent backflow of bubbles from the drainage port from occurring at the side drainage port and drainage from the side drainage port. The branch drainage pipe has a hose pipe that connects the main drainage pipe and the side drainage port, and the backflow prevention valve is a hose pipe. In the drainage pipe of the tank body that is attached to the main drainage pipe side
The opening angle of the valve body of the check valve is limited so that the drainage that has passed through the valve body collides with the wall surface of the pipe body facing the valve body at an angle smaller than about 45 degrees. It is a drainage pipe characterized by.

請求項４に記載の本発明は、上記排水配管において、逆流防止弁は、板状の弁体と、該弁体を枝排水管に対して回動自在に取り付けるヒンジ部と、枝排水管に備えられた、弁体が当接する弁座部と、からなり、通常時は弁体が弁座部に接して、逆流した排水や排水中の泡の通過を防止すると共に、排水時には弁座部から離間して側面排水口からの排水や排水中の泡を通過させて排水を行うことを特徴とする、請求項１乃至請求項３のいずれか一つに記載の排水配管である。
According to the fourth aspect of the present invention, in the drainage pipe, the check valve is attached to a plate-shaped valve body, a hinge portion for rotatably attaching the valve body to the branch drainage pipe, and a branch drainage pipe. It consists of a valve seat part that the valve body comes into contact with, and the valve body normally contacts the valve seat part to prevent backflow of drainage and bubbles in the drainage, and also to prevent the passage of backflow drainage and bubbles in the drainage. The drainage pipe according to any one of claims 1 to 3 , characterized in that drainage is performed by passing drainage from a side drainage port or bubbles in the drainage away from the side drainage port.

請求項５に記載の本発明は、上記排水配管において、逆流防止弁を備えた管体が、他の枝排水管の部材に対して着脱自在に構成され、着脱により開放された箇所から弁体を枝排水管外に取り出し可能に構成したことを特徴とする、請求項１乃至請求項４のいずれか１つに記載の排水配管である。
According to the fifth aspect of the present invention, in the drainage pipe, the pipe body provided with the check valve is detachably configured with respect to the members of the other branch drainage pipes, and the valve body is opened from the portion opened by the attachment / detachment. The drainage pipe according to any one of claims 1 to 4 , wherein the drainage pipe is configured to be able to be taken out from the branch drainage pipe.

請求項６に記載の本発明は、上記排水配管において、主排水管に沿って設けられる管体である主管部、該主管部の側面から延出された枝管部、からなる枝付き管を備え、枝付き管の主管部は主排水管側に、枝管部は側面排水口からの配管に、それぞれ接続されると共に、枝管部内に逆流防止弁を備えたことを特徴とする、請求項３に記載の排水配管である。
According to the sixth aspect of the present invention, in the drainage pipe, a branch pipe including a main pipe portion which is a pipe body provided along the main drain pipe and a branch pipe portion extending from a side surface of the main pipe portion is provided. includes, main part of the sidearm pipe to the main drainage pipe side, the pipe from the branch pipe part side drain outlet, which is connected respectively, characterized by comprising a check valve in the branch pipe portion, wherein Item 3 is the drainage pipe.

請求項７に記載の本発明は、上記排水配管において、主排水管に沿って設けられる管体である主管部、該主管部の側面から延出された枝管部、からなる枝付き管を備え、枝付き管の主管部は主排水管側に、枝管部は側面排水口からの配管に、それぞれ接続されると共に、枝管部の端部に、逆流防止弁を備えた継手管を接続することを特徴とする、請求項３に記載の排水配管である。
According to the seventh aspect of the present invention, in the drainage pipe, a branch pipe including a main pipe portion which is a pipe body provided along the main drain pipe and a branch pipe portion extending from a side surface of the main pipe portion is provided. The main pipe part of the branch pipe is connected to the main drain pipe side, the branch pipe part is connected to the pipe from the side drain port, and a joint pipe equipped with a check valve is installed at the end of the branch pipe part. The drainage pipe according to claim 3 , wherein the drainage pipe is connected.

請求項１乃至請求項３に記載の本発明では、排水口からの配管に、側面排水口からの配管を接続した排水配管において、排水口から泡まじりの排水を流した場合に、側面排水口から泡が逆流することを防止することができる。
請求項４乃至請求項７に記載の本発明では、発明の構成を明確化できる。
請求項５に記載の本発明では、逆流防止弁近傍の配管内部を簡単に露出させることができ、清掃や破損時のメンテナンスを容易に行うことができる。
請求項３及び請求項６及び請求項７に記載の本発明では、弁体を一種の排水の為のガイドとして扱うことで、枝管部からの排水が、本管部へ合流する際に、合流がスムーズに行われて乱流の発生を防ぎ、排水性能を良好なものとすることができる。 In the present invention according to any one of claims 1 to 3 , in a drainage pipe in which a pipe from a side drainage port is connected to a pipe from the drainage port, when drainage mixed with bubbles flows from the drainage port, the side drainage port It is possible to prevent the bubbles from flowing back.
In the present invention according to claims 4 to 7 , the constitution of the invention can be clarified.
According to the fifth aspect of the present invention, the inside of the pipe in the vicinity of the check valve can be easily exposed, and cleaning and maintenance at the time of breakage can be easily performed.
In the present invention according to claim 3, claim 6 and claim 7 , the valve body is treated as a kind of guide for drainage, so that the drainage from the branch pipe portion merges with the main pipe portion. The merging can be performed smoothly, the occurrence of turbulent flow can be prevented, and the drainage performance can be improved.

第一実施例の施工状態を示す側面図である。It is a side view which shows the construction state of 1st Example. 第一実施例の要部を示す参考図である。It is a reference figure which shows the main part of the 1st Example. 第一実施例の、排水口を閉口し逆流防止弁が開口した状態を示す参考図である。It is a reference figure which shows the state in which the drainage port is closed and the check valve is opened in the first embodiment. 第一実施例の、逆流防止弁の部材構成を示す参考図である。It is a reference figure which shows the member structure of the check flow prevention valve of 1st Example. 第二実施例の施工状態を示す側面図である。It is a side view which shows the construction state of the 2nd Example. 第二実施例の要部を示す参考図である。It is a reference figure which shows the main part of the 2nd Example. 第二実施例の、排水口を閉口し逆流防止弁が開口した状態を示す参考図である。It is a reference figure which shows the state which closed the drainage port and opened the check valve of the 2nd Example. 第二実施例の、逆流防止弁の部材構成を示す参考図である。It is a reference figure which shows the member structure of the check flow prevention valve of the 2nd Example.

以下に、本発明の第一実施例を、図面を参照しつつ説明する。
図１乃至図４に示した、本発明の第一実施例の排水配管は、槽体である洗面ボウルＳに施工される排水配管であって、以下に記載する主排水管、枝排水管、逆流防止弁３を備えた継手管１２、から構成され、以下に記載する洗面台に施工される。
洗面ボウルＳは、上方が開口した略箱体形状を成す槽体であって、底面には後述する排水口本体５を取り付ける底面開口部Ｈ１を、側面の上端近傍には側面排水口本体９を取り付ける側面開口部Ｈ２を、それぞれ備えてなる。
主排水管は、洗面ボウルＳの底面の底面開口部Ｈ１に接続され、槽体底面からの排水を下水側に排出するための配管であって、以下に記載する、排水口本体５、テールピース管７、トラップ管８、より構成されてなる。
排水口本体５は、略円筒形状を成す管体であって、上端外側面には外径方向に突出するフランジ部６を備え、該フランジ部６よりも下方の側面に管体の内外を貫通する貫通孔５ａを２カ所備えてなる。また、貫通孔５ａの下方の外側面には、下端まで雄ネジを備えてなる。また、施工完了時、排水口本体５の内部は槽体である洗面ボウルＳ内の排水を排出する排水口１を形成する。
テールピース管７は、略直線状を成す管体からなる部材であって、上端の内周部分に排水口本体５の雄ネジと螺合する雌ネジを備えてなる。
トラップ管８はＳ字形状に屈曲させた管体を、９０度横転させた形状を成す配管部材であって、使用時にその内部に排水を溜めることによってトラップ機能と呼ばれる、下流側から上流側への臭気また害虫類の逆流を防止する機能を備えた部材である。本実施例ではＪ字形状に屈曲した管体を２本組み合わせてＳ字形状となるように構成している。また、トラップ管８の下流側は直下方向に延出されており、トラップ管８の下流側端部と、下水側に繋がる床下配管とが接続されるように構成されてなる。
枝排水管は、洗面台の側面の上端近傍に設けられた、側面開口部Ｈ２に接続され、槽体側面からの排水を主排水管側に排出するための配管であって、以下に記載する、側面排水口本体９、エルボ管１０、ホース管１１、枝付き管４、継手管１２、より構成されてなる。
側面排水口本体９は、略円筒形状を成す管体であって、その一端の外側面には外径方向に突出する鍔部９ａを備えてなる。また、側面排水口本体９の外側面には、下流側端部まで雄ネジを備えてなる。また、施工完了時、側面排水口本体９の内部は槽体である洗面ボウルＳ内の排水を排出する側面排水口２を形成する。
エルボ管１０は、９０度に屈曲した管体からなる部材であって、上流側の端部の内周部分に側面排水口本体９の雄ネジと螺合する雌ネジを備えてなる。
ホース管１１は洗面ボウルＳの外側面に沿って配置される、可撓性を備えた管体であって、一端はエルボ管１０の下流側端部に接続され、他端には、内部に雌ネジを備えたナット部材１１ａを回動自在に備えてなる。
枝付き管４は、上下に延出された主管部４ａと、該主管部４ａの側面から延出された枝管部４ｂ、から構成される管体である。この枝管部４ｂの端部の外周の外径は、一般的な規格品のホース管１１の内の一つ（例えば管径３０ミリメートル）の寸法の内径に合致するに構成されてなる。
また、後述するように、施工完了時、主管部４ａの内部に、排水口本体５の一部が同心円状に収納配置される。即ち、主管部４ａは、主排水管の一部である排水口本体５に沿って設けられる管体である。
継手管１２は、その内部に逆流防止弁３を構成する管体であって、以下に記載する継手管本体１３と、弁本体１５と、弁押え部材１６と、から構成される。
継手管本体１３は略円筒形状を成す管体であって、上流側端部は外側面にホース管１１のナット部材１１ａの雌ネジと螺合する雄ネジを備えてなり、またその内部には、後述する弁本体１５の回転軸１５ｂを回動自在に収納する溝部１４を備えてなる。
また、継手管本体１３の下流側端部は、その内径が一般的な規格品のホース管１１の内の一つの内径と同じ寸法に構成されてなる。ここでは、上記枝付き管４の枝管部４ｂ端と同様の、管径３０ミリメートルとなるように構成されている。このため、継手管本体１３の上記端部は、枝付き管４の枝管部４ｂに対し、枝管部４ｂ端部をその内部に収納するようにして接続することができる。
弁押え部材１６は、後述する弁本体１５を継手管本体１３の端部からその内部に配置した後、更に継手管１２端部より挿入するリング状の部材であって、溝部１４に配置された回転軸１５ｂが端部側より抜けないように押えると共に、通常時、また逆流の発生時に弁本体１５の弁体１５ａが当接して逆流した泡の通過を防ぐ弁座部１６ａを備えてなる。
弁本体１５は、略円盤状の部材であって、弁座部１６ａに当接して継手管１２内の流路を閉塞する弁体１５ａと、該弁体１５ａの端部に備えられた、溝部１４に回動自在に配置される回転軸１５ｂと、から構成されてなる。
施工完了時、弁本体１５が継手管本体１３内に、回動自在に収納配置された場合、弁本体１５の弁体１５ａは、通常時は自重にて垂立した状態となることで弁座部１６ａに当接し、排水の流路を閉塞する。このため、枝付き管４の枝管部４ｂから、泡等が逆流を生じても、弁本体１５よりも上流側に逆流が上昇することを防止する。
一方、側面排水口２から流れてきた排水が逆流防止弁３に達した場合、排水の水圧によって弁部材は回転軸１５ｂを中心に回転し、弁体１５ａが弁座部１６ａから離間して排水の流路を開口し、これにより排水を下流側に流出することができる。
即ち、本実施例の継手管１２は、常時は閉塞し、側面排水口２から排水を生じた場合のみ開口する逆流防止弁３をその内部に備えてなる。また、本実施例では、弁本体１５は回転軸１５ｂと溝部１４とを組み合わせたことでヒンジ部３ａを形成する。即ち、本実施例の逆流防止弁３は、管体（継手管１２）に対して回動自在に取り付けられるヒンジ部３ａを備えた弁体１５ａからなる。
また、本実施例の排水配管は、必要に応じ排水口本体５の上端の開口を覆って閉塞する、弾性素材からなる蓋部材１７を備えてなる。 Hereinafter, the first embodiment of the present invention will be described with reference to the drawings.
The drainage pipe of the first embodiment of the present invention shown in FIGS. 1 to 4 is a drainage pipe installed in the washbasin S, which is a tank body, and is described below in the main drainage pipe, the branch drainage pipe, and the branch drainage pipe. It is composed of a joint pipe 12 provided with a check valve 3, and is installed on the wash basin described below.
The wash bowl S is a tank body having a substantially box-like shape with an opening at the top, and has a bottom opening H1 for attaching a drainage port body 5 described later on the bottom surface and a side drainage port body 9 near the upper end of the side surface. Each side opening H2 to be attached is provided.
The main drainage pipe is connected to the bottom opening H1 on the bottom surface of the washbasin S, and is a pipe for discharging the drainage from the bottom surface of the tank body to the sewage side. It is composed of a pipe 7 and a trap pipe 8.
The drainage port main body 5 is a pipe body having a substantially cylindrical shape, and has a flange portion 6 protruding in the outer diameter direction on the outer surface of the upper end, and penetrates the inside and outside of the pipe body on the side surface below the flange portion 6. It is provided with two through holes 5a to be formed. Further, the outer surface below the through hole 5a is provided with a male screw up to the lower end. Further, when the construction is completed, the inside of the drainage port main body 5 forms a drainage port 1 for discharging the drainage in the wash bowl S which is a tank body.
The tailpiece pipe 7 is a member made of a pipe body having a substantially linear shape, and is provided with a female screw screwed with a male screw of a drainage port main body 5 at an inner peripheral portion of an upper end.
The trap pipe 8 is a pipe member formed by rolling over a pipe body bent into an S shape by 90 degrees, and by collecting drainage inside the trap pipe 8 during use, which is called a trap function, from the downstream side to the upstream side. It is a member that has a function to prevent the backflow of odors and pests. In this embodiment, two pipe bodies bent into a J shape are combined to form an S shape. Further, the downstream side of the trap pipe 8 extends in the direct downward direction, and is configured so that the downstream end of the trap pipe 8 and the underfloor pipe connected to the sewage side are connected.
The branch drainage pipe is a pipe connected to the side opening H2 provided near the upper end of the side surface of the washstand and for discharging the drainage from the side surface of the tank body to the main drainage pipe side, and is described below. It is composed of a side drainage port main body 9, an elbow pipe 10, a hose pipe 11, a branch pipe 4, and a joint pipe 12.
The side drainage port main body 9 is a pipe body having a substantially cylindrical shape, and the outer surface of one end thereof is provided with a flange portion 9a protruding in the outer diameter direction. Further, on the outer surface of the side drainage port main body 9 becomes provided with a male thread to the lower stream side end portion. Further, when the construction is completed, the inside of the side drain port main body 9 forms a side drain port 2 for draining the drainage in the wash bowl S which is a tank body.
The elbow pipe 10 is a member made of a pipe body bent at 90 degrees, and includes a female screw screwed with a male screw of a side drain port main body 9 at an inner peripheral portion of an upstream end portion.
The hose tube 11 is a flexible tube body arranged along the outer surface of the washbasin S, one end connected to the downstream end of the elbow tube 10 and the other end internally. A nut member 11a provided with a female screw is rotatably provided.
The branch pipe 4 is a pipe body composed of a main pipe portion 4a extending vertically and a branch pipe portion 4b extending from the side surface of the main pipe portion 4a. The outer diameter of the outer circumference of the end portion of the branch pipe portion 4b is configured to match the inner diameter of the dimension of one of the hose pipes 11 of a general standard product (for example, a pipe diameter of 30 mm).
Further, as will be described later, when the construction is completed, a part of the drainage port main body 5 is concentrically stored and arranged inside the main pipe portion 4a. That is, the main pipe portion 4a is a pipe body provided along the drain port main body 5 which is a part of the main drain pipe.
The joint pipe 12 is a pipe body that constitutes a check valve 3 inside, and is composed of a joint pipe main body 13 described below, a valve main body 15, and a valve holding member 16.
The joint pipe body 13 is a pipe body having a substantially cylindrical shape, and the upstream end portion is provided with a male screw screwing with the female screw of the nut member 11a of the hose pipe 11 on the outer surface, and inside the joint pipe body 13. A groove portion 14 for rotatably accommodating the rotating shaft 15b of the valve body 15, which will be described later, is provided.
Further, the downstream end portion of the joint pipe main body 13 is configured such that the inner diameter thereof is the same as the inner diameter of one of the general standard hose pipes 11. Here, the pipe diameter is 30 mm, which is the same as the end of the branch pipe portion 4b of the branch pipe 4. Therefore, the end portion of the joint pipe main body 13 can be connected to the branch pipe portion 4b of the branch pipe 4 so that the end portion of the branch pipe portion 4b is housed therein.
The valve pressing member 16 is a ring-shaped member in which the valve body 15 described later is arranged from the end of the joint pipe body 13 to the inside thereof and then further inserted from the end of the joint pipe 12, and is arranged in the groove portion 14. The rotary shaft 15b is pressed so as not to come off from the end side, and the valve seat portion 16a is provided to prevent the backflow of bubbles from passing through the valve body 15a of the valve body 15 in contact with the valve body 15a during normal times and when backflow occurs.
The valve body 15 is a substantially disk-shaped member, and has a valve body 15a that abuts on the valve seat portion 16a to block the flow path in the joint pipe 12, and a groove portion provided at the end of the valve body 15a. It is composed of a rotating shaft 15b that is rotatably arranged on 14.
When the valve body 15 is rotatably stored and arranged in the joint pipe body 13 when the construction is completed, the valve body 15a of the valve body 15 is normally in an upright state by its own weight, so that the valve seat It abuts on the portion 16a and closes the drainage flow path. Therefore, even if bubbles or the like generate a backflow from the branch pipe portion 4b of the branch pipe 4, the backflow is prevented from rising to the upstream side of the valve body 15.
On the other hand, when the drainage flowing from the side drainage port 2 reaches the check valve 3, the valve member rotates about the rotation shaft 15b due to the water pressure of the drainage, and the valve body 15a separates from the valve seat portion 16a and drains. The flow path of the water can be opened so that the wastewater can flow to the downstream side.
That is, the joint pipe 12 of this embodiment is provided with a check valve 3 inside, which is always closed and opens only when drainage is generated from the side drain port 2. Further, in the present embodiment, the valve body 15 forms the hinge portion 3a by combining the rotating shaft 15b and the groove portion 14. That is, the check valve 3 of this embodiment is composed of a valve body 15a provided with a hinge portion 3a that is rotatably attached to the pipe body (joint pipe 12).
Further, the drainage pipe of the present embodiment includes a lid member 17 made of an elastic material that covers and closes the opening at the upper end of the drainage port main body 5 as needed.

上記した各部材から構成される排水配管は、以下のようにして洗面台に施工される。
尚、本実施例において、特に詳述しない場合でも、各配管の接続箇所等は、必要に応じ接着やパッキングを利用した接続により、漏水などが生じないように構成されてなる。
始めに、工場等において、ホース管１１のナット部材１１ａを備えない側の端部に、エルボ管１０の下流側端部を接着によって水密的に接続する。
また、継手管本体１３の下流側端部に、枝付き管４の枝管部４ｂを、接着によって水密的に接続する。
また、継手管本体１３の溝部１４に弁本体１５の回転軸１５ｂを収納し、更に弁押え部材１６を継手管本体１３内に挿入して、継手管本体１３内に逆流防止弁３を構成する。
更に、ホース管１１のナット部材１１ａの雌ネジを継手管本体１３の雄ネジに螺合させて、継手管本体１３をホース管１１に水密的且つ着脱自在に接続する。
上記のようにして枝排水管の一部を構成した上で、施工現場に各部材を搬入し、次のようにして施工を行う。
施工現場において、まず、キャビネットや台座等を設置した上で、その上に洗面ボウルＳを配置して洗面台を構成する。また、この際のキャビネット下の床面には開口が設けられ、開口部分から下水側に繋がる、床下空間に配管された床下配管に管体を接続できるように構成されてなる。
次に、洗面ボウルＳの底面開口部Ｈ１に排水口本体５を挿通し、排水口本体５のフランジ部６下面と、底面開口部Ｈ１周縁の上面とが当接するように配置する。更に枝付き管４を、洗面ボウルＳの下方側から配置する。この時は、枝付き管４の主管部４ａの内部に、主管部４ａと排水口本体５とが同心円状になるように、枝付き管４を挿通させる。また、枝管部４ｂが側面排水口２側を向く方に配置しておく。
次に、排水口本体５の下端から、排水口本体５の雄ネジにテールピース管７の雌ネジを螺合させて締め付けを行う。この時、枝付き管４の主管部４ａは、上端は洗面ボウルＳの底面開口部Ｈ１周縁の下面に、下端はテールピース管７の上端にそれぞれ水密的に当接した状態となる。
このようにして、底面開口部Ｈ１の周縁を、枝付き管４の主管部４ａを介して、排水口本体５のフランジ部６とテールピース管７上面とで挟持することで、排水口本体５及びテールピース管７が洗面ボウルＳに接続固定される。
次に、洗面ボウルＳの側面開口部Ｈ２の周縁の裏面側に、エルボ管１０の上流側端部を当接させた上で、側面排水口本体９を側面開口部Ｈ２に挿通し、側面排水口本体９の雄ネジを、エルボ管１０の雌ネジに螺合させ、締め付けを行う。
このようにして、側面開口部Ｈ２の周縁を、側面排水口本体９の鍔部９ａとエルボ管１０の上流側端部とで挟持することで、側面排水口本体９及びエルボ管１０が洗面ボウルＳに接続固定される。
更に、テールピース管７の下流側端部にトラップ管８の上流側端部を接続し、トラップ管８の下流側端部を床下配管に接続して、本実施例の排水配管の、洗面台への施工が完了する。
尚、継手管１２を上記のように構成・接続したことから、本実施例の排水配管は、常時は閉塞し、側面排水口２から排水を生じた場合のみ開口する逆流防止弁３を備えた継手管１２を、枝管部４ｂの端部に接続した排水配管である。 The drainage pipe composed of the above-mentioned members is installed on the wash basin as follows.
In this embodiment, even if not described in detail, the connection points and the like of the pipes are configured so as not to cause water leakage or the like by connection using adhesion or packing as necessary.
First, in a factory or the like, the downstream end of the elbow pipe 10 is watertightly connected to the end of the hose pipe 11 on the side not provided with the nut member 11a by adhesion.
Further, the branch pipe portion 4b of the branch pipe 4 is watertightly connected to the downstream end portion of the joint pipe main body 13 by adhesion.
Further, the rotating shaft 15b of the valve body 15 is housed in the groove 14 of the joint pipe body 13, and the valve holding member 16 is further inserted into the joint pipe body 13 to form a check valve 3 in the joint pipe body 13. ..
Further, the female screw of the nut member 11a of the hose pipe 11 is screwed into the male screw of the joint pipe main body 13, and the joint pipe main body 13 is watertightly and detachably connected to the hose pipe 11.
After constructing a part of the branch drainage pipe as described above, each member is brought into the construction site and the construction is carried out as follows.
At the construction site, first, a cabinet, a pedestal, etc. are installed, and then a wash basin S is arranged on the cabinet to form a wash basin. Further, an opening is provided on the floor surface under the cabinet at this time, and the pipe body can be connected to the underfloor pipe connected to the sewage side from the opening portion.
Next, the drain port main body 5 is inserted into the bottom opening H1 of the wash bowl S, and the lower surface of the flange portion 6 of the drain port main body 5 and the upper surface of the peripheral edge of the bottom opening H1 are arranged so as to be in contact with each other. Further, the branch pipe 4 is arranged from the lower side of the wash bowl S. At this time, the branched pipe 4 is inserted into the main pipe portion 4a of the branched pipe 4 so that the main pipe portion 4a and the drain port main body 5 are concentric. Further, the branch pipe portion 4b is arranged so as to face the side drainage port 2 side.
Next, from the lower end of the drainage port main body 5, the female screw of the tailpiece pipe 7 is screwed into the male screw of the drainage port main body 5 to tighten the drainage port main body 5. At this time, the upper end of the main pipe portion 4a of the branched pipe 4 is in watertight contact with the lower surface of the peripheral surface of the bottom opening H1 of the wash bowl S, and the lower end is in watertight contact with the upper end of the tailpiece pipe 7.
In this way, the peripheral edge of the bottom opening H1 is sandwiched between the flange portion 6 of the drainage port main body 5 and the upper surface of the tailpiece pipe 7 via the main pipe portion 4a of the branch pipe 4, so that the drainage port main body 5 And the tailpiece pipe 7 is connected and fixed to the wash bowl S.
Next, after the upstream end of the elbow pipe 10 is brought into contact with the back surface side of the peripheral edge of the side opening H2 of the wash bowl S, the side drainage port main body 9 is inserted into the side opening H2 to drain the side. The male screw of the mouth body 9 is screwed into the female screw of the elbow tube 10 to tighten it.
In this way, by sandwiching the peripheral edge of the side opening H2 between the flange portion 9a of the side drain port main body 9 and the upstream end portion of the elbow pipe 10, the side drain port main body 9 and the elbow pipe 10 are placed in a wash bowl. Connected and fixed to S.
Further, the upstream end of the trap pipe 8 is connected to the downstream end of the tailpiece pipe 7, the downstream end of the trap pipe 8 is connected to the underfloor pipe, and the wash basin of the drainage pipe of this embodiment is connected. Construction is completed.
Since the joint pipe 12 is configured and connected as described above, the drainage pipe of this embodiment is provided with a check valve 3 which is always closed and opens only when drainage is generated from the side drainage port 2. This is a drainage pipe in which the joint pipe 12 is connected to the end of the branch pipe portion 4b.

上記のように構成した配管構造において、洗面台を使用し、洗面ボウルＳ内に排水が発生すると、排水は、洗面ボウルＳ底面に配置された排水口本体５内部の排水口１から、排水口本体５内部、テールピース管７、トラップ管８、の順に通過し、最終的には床下配管から下水側に排出される。
また、上記排水口１に、図３のように蓋部材１７を配置して排水口１からの排水が行われないようにした上で、洗面ボウルＳ内に吐水を行うと、吐水は排出されること無く洗面ボウルＳ内に吐水が溜まってゆく。溜まった吐水の水位が側面排水口２の下端よりも上方に達すると、洗面ボウルＳ内に溜まった吐水は側面排水口２から、側面排水口本体９内部、エルボ管１０、ホース管１１、継手管１２、枝付き管４の枝管部４ｂ、枝付き管４の主管部４ａ内から排水口本体５の貫通孔５ａを介して排水口本体５内に流入し、更に（排水口１からの排水の場合と同様に）テールピース管７、トラップ管８、の順に通過し、最終的には床下配管から下水側に排出される。
尚、上記のように側面排水口２から排水が行われる場合、排水が継手管１２内を通過する際に、図３に示したように、排水の水圧によって継手管１２の内部で弁本体１５が回転軸１５ｂを中心に回動して排水の流路を開放し、排水の通過が行われる。排水が終了し、継手管１２内から排水が無くなると、弁本体１５は再び弁本体１５の自重によって垂立した状態となることで弁座部１６ａに当接し、排水の流路を閉塞する。
また、上記のようにして排水が行われ、トラップ管８内を排水が通過する際、トラップ管８の屈曲部分の内部に排水の溜まり部分が生じる。この排水の溜まり部分によって、トラ
ップ管８内の流路には、（長期間の放置によって蒸発しない限り）排水が常に満水状態となっている箇所が発生する。この、流路が排水によって満水となった部分によって、下流側から臭気や害虫類が屋内側に逆流することが防止される。このように、下水側に繋がる配管から臭気や害虫類が屋内側に侵入することを防止する機能を「トラップ機能」と呼ぶ。また、上記トラップ管８の曲がり部分に溜まって流路を満水状態とした排水は「封水」と呼ばれる。本実施例のトラップ管８は、封水を利用してトラップ機能を生じさせた、「封水式排水トラップ」である。 In the piping structure configured as described above, when a wash basin is used and drainage is generated in the wash bowl S, the drainage is discharged from the drain port 1 inside the drain port main body 5 arranged on the bottom surface of the wash bowl S. It passes through the inside of the main body 5, the tailpiece pipe 7, and the trap pipe 8 in this order, and is finally discharged from the underfloor pipe to the sewage side.
Further, when the lid member 17 is arranged in the drainage port 1 as shown in FIG. 3 to prevent the drainage from the drainage port 1 and then the water is discharged into the wash bowl S, the water discharge is discharged. Water spouts accumulate in the wash bowl S without any problems. When the water level of the accumulated water reaches above the lower end of the side drain port 2, the water discharged in the wash bowl S is discharged from the side drain port 2 to the inside of the side drain port main body 9, the elbow pipe 10, the hose pipe 11, and the joint. The pipe 12, the branch pipe portion 4b of the branch pipe 4, and the main pipe portion 4a of the branch pipe 4 flow into the drain port main body 5 through the through hole 5a of the drain port main body 5, and further (from the drain port 1). It passes through the tailpiece pipe 7 and the trap pipe 8 in this order (as in the case of drainage), and is finally discharged from the underfloor pipe to the sewage side.
When drainage is performed from the side drain port 2 as described above, when the drainage passes through the joint pipe 12, as shown in FIG. 3, the valve body 15 is inside the joint pipe 12 due to the water pressure of the drainage. Rotates around the rotating shaft 15b to open the drainage flow path, and the drainage passes through. When the drainage is completed and the drainage is exhausted from the inside of the joint pipe 12, the valve body 15 is brought into an upright state again due to the weight of the valve body 15 and comes into contact with the valve seat portion 16a to block the drainage flow path.
Further, when the drainage is performed as described above and the drainage passes through the trap pipe 8, a drainage pool portion is generated inside the bent portion of the trap pipe 8. Due to this drainage pool portion, the flow path in the trap pipe 8 is always filled with drainage (unless it evaporates after being left for a long period of time). This portion where the flow path is filled with drainage prevents odors and pests from flowing back to the indoor side from the downstream side. Such a function of preventing odors and pests from invading the indoor side from the pipe connected to the sewage side is called a "trap function". Further, the drainage that collects in the bent portion of the trap pipe 8 and fills the flow path with water is called "sealing water". The trap pipe 8 of this embodiment is a "water-sealing type drain trap" in which a trap function is generated by using water-sealing.

上記のように構成した配管構造において、洗面台にて石鹸・洗剤などを使用し、洗面ボウルＳ内に泡混じりの排水を発生させた上で、この排水を排水口１から排出した場合、泡混じりの排水は、洗面ボウルＳ底面に配置された排水口本体５内部の排水口１から、排水口本体５内部、テールピース管７、トラップ管８、の順に通過し、最終的には床下配管から下水側に排出される。
この場合において、排水配管上に封水式排水トラップを備えたことで、排水中の泡が下流側に流出しにくくなる状態が発生する。詳述すると、封水式排水トラップを含む配管において、排水等が封水の部分を通過して下流側に流出するためには、封水の水面よりも下方になる位置まで通過しなければならないが、泡は気体を含有している為、排水に比べて比重は相当に軽く、封水水面よりも下方に下がるためには泡と共に流れる排水の勢いが相当に強くなければならない。このため、排水の量が少なく、勢いが弱かったり、排水の終了間際で排水の流れの勢いが弱まった状態の際に流れ込む泡は、封水を超えることができず、封水よりも上流側に残留する。
この場合に、洗面ボウルＳ底面の排水口１からは排水が継続して流れている場合が多く、泡は封水の水面上から堆積してゆき、排水口本体５内部、貫通孔５ａ、枝付き管４の主管部４ａ内、枝管部４ｂ、まで充満するが、本実施例では、継手管１２内において、常時は閉塞し、側面排水口２から排水を生じた場合のみ開口する逆流防止弁３を備えてなる。具体的には、継手管本体１３の内部において、弁本体１５が弁座部１６ａに通常時当接すると共に、下流側から上流側へ泡の圧力が生じても、そのまま弁本体１５の弁体１５ａが、弁座部１６ａに強く当接して、確実に泡の逆流を防止する。
このため、排水中に石鹸・洗剤などに由来する泡が混入していても、継手管１２の逆流防止弁３によって逆流が防止され、側面排水口２から泡が逆流して溢れ出す、ということは無い。 In the piping structure configured as described above, when soap, detergent, etc. are used on the wash basin to generate drainage mixed with bubbles in the wash bowl S, and then this drainage is discharged from the drain port 1, bubbles are generated. The mixed drainage passes from the drainage port 1 inside the drainage port main body 5 arranged on the bottom surface of the wash bowl S to the inside of the drainage port main body 5, the tailpiece pipe 7, and the trap pipe 8 in this order, and finally the underfloor piping. Is discharged to the sewage side.
In this case, by providing a water-sealed drain trap on the drain pipe, a state occurs in which bubbles in the drain are less likely to flow to the downstream side. More specifically, in a pipe including a water-sealed drain trap, in order for drainage or the like to pass through the water-sealed portion and flow out to the downstream side, it must pass to a position below the water surface of the water-sealed water. However, since the bubbles contain gas, the specific gravity is considerably lighter than that of the drainage, and the force of the drainage flowing with the bubbles must be considerably strong in order to lower the water level below the sealed water surface. For this reason, the amount of drainage is small and the momentum is weak, or the bubbles that flow in when the momentum of the drainage flow is weakened just before the end of drainage cannot exceed the sealed water and are on the upstream side of the sealed water. Remains in.
In this case, if the drainage from drain outlet 1 of the washbowl S bottom surface is flowing continuously lot, bubbles so on are deposited from above the water surface of water seal, the drainage port main body 5 inside, the through-hole 5a, The main pipe portion 4a and the branch pipe portion 4b of the branch pipe 4 are filled, but in this embodiment, the backflow is always closed in the joint pipe 12 and opens only when drainage is generated from the side drain port 2. It is provided with a prevention valve 3. Specifically, even if the valve body 15 normally abuts on the valve seat portion 16a inside the joint pipe body 13 and foam pressure is generated from the downstream side to the upstream side, the valve body 15a of the valve body 15 remains as it is. However, it strongly abuts on the valve seat portion 16a to surely prevent the backflow of bubbles.
Therefore, even if bubbles derived from soap, detergent, etc. are mixed in the drainage, the backflow prevention valve 3 of the joint pipe 12 prevents the backflow, and the bubbles flow back from the side drainage port 2 and overflow. There is no.

また、上記継手管１２の逆流防止弁３の回動する回転軸１５ｂのように、機械要素を備えた場合、排水中の塵芥や油分、また泡の原因となった石鹸・洗剤成分などが回転軸１５ｂ等に付着したり、また弁体１５ａと弁座部１６ａとの間に付着し弁体１５ａから弁座部１６ａを離間し難くする場合があるが、本実施例では、継手管１２の端部とホース管１１とをナット部材１１ａを利用して接続しており、ナット部材１１ａの螺合を緩めることで、ホース管１１と継手管１２とを容易に着脱・分離することができる。このようにホース管１１と継手管１２とを着脱・分離し、弁本体１５や弁押え部材１６を取り出して、各部材や継手管１２内部を清掃し、再度接続を行うことで、上記の様に排水中の石鹸や洗剤、塵芥や油分等の汚濁物質などに由来する動作異常を容易に解消することができる。また、部材の破損等による動作異常が発生しても、同様にホース管１１と継手管１２とを容易に着脱・分離し、破損した部材（弁本体１５や弁押え部材１６）の交換を行う等することで、容易に修理作業を行うことができる。
即ち、本実施例では、逆流防止弁３を備えた枝排水管の管体である継手管１２が、他の枝排水管の部材であるホース管１１に対して着脱自在に構成され、着脱により開放された箇所から弁体１５ａを枝排水管外に取り出して部材交換や清掃が可能に構成されてなる。 Further, when a mechanical element is provided such as the rotating rotary shaft 15b of the check valve 3 of the joint pipe 12, dust and oil in the drainage, and soap / detergent components that cause bubbles rotate. It may adhere to the shaft 15b or the like, or may adhere between the valve body 15a and the valve seat portion 16a to make it difficult to separate the valve seat portion 16a from the valve body 15a. The end portion and the hose pipe 11 are connected by using the nut member 11a, and the hose pipe 11 and the joint pipe 12 can be easily attached / detached / separated by loosening the screw of the nut member 11a. By attaching / detaching / separating the hose pipe 11 and the joint pipe 12 in this way, taking out the valve body 15 and the valve holding member 16, cleaning each member and the inside of the joint pipe 12, and reconnecting them, as described above. In addition, it is possible to easily eliminate operational abnormalities caused by soaps and detergents in wastewater, pollutants such as dust and oil. Further, even if an operation abnormality occurs due to damage to the member or the like, the hose pipe 11 and the joint pipe 12 are similarly easily attached / detached / separated, and the damaged member (valve body 15 or valve holding member 16) is replaced. By doing so, the repair work can be easily performed.
That is, in this embodiment, the joint pipe 12 which is a pipe body of the branch drain pipe provided with the check valve 3 is detachably configured with respect to the hose pipe 11 which is a member of the other branch drain pipe, and by attaching and detaching. The valve body 15a is taken out of the branch drainage pipe from the opened portion so that the members can be replaced and cleaned.

次に、本発明の第二実施例を、図面を参照しつつ説明する。
図５乃至図８に示した、本発明の第二実施例の排水配管は、槽体である洗面ボウルＳに施
工される排水配管であって、以下に記載する枝付き管４、トラップ管８、側面排水口本体９、エルボ管１０、ホース管１１、弁本体１５より構成されてなる。
この内、トラップ管８、側面排水口本体９、エルボ管１０、ホース管１１は、段落００１４に記載された第一実施例の各部材と同一の構成のため、説明は省略し、洗面ボウルＳ、枝付き管４、弁本体１５、及び弁押え部材１６の構造について説明する。
洗面ボウルＳは、上方が開口した略箱体形状を成す槽体であって、底面には上下に貫通した開口からなる排水口１を、側面の上端近傍には側面排水口本体９を取り付ける側面開口部Ｈ２を、それぞれ備えてなる。また、排水口１周縁の下面には、後述するビス部材１８ａを螺合するためのネジ穴部１８ｂを複数備えてなる。
枝付き管４は、上下に延出された主管部４ａと、該主管部４ａの側面から延出された枝管部４ｂ、から構成される管体であって、主管部４ａの上面には外周方向に突出したフランジ部６を備え、また該フランジ部６の数カ所に、後述するビス部材１８ａが貫通するための穴部６ａを備えてなる。
また枝管部４ｂの外側面にはホース管１１のナット部材１１ａの雌ネジと螺合する雄ネジを備えてなり、またその内部には、弁本体１５の回転軸１５ｂを回動自在に収納する溝部１４を備えてなる。
弁押え部材１６は、後述する弁本体１５を枝付き管４の枝管部４ｂの端部からその内部に配置した後、更に枝管部４ｂ端部より挿入するリング状の部材であって、溝部１４に配置された回転軸１５ｂが端部側より抜けないように押えると共に、通常時、また逆流の発生時に弁本体１５の弁体１５ａが当接して逆流した泡の通過を防ぐ弁座部１６ａを備えてなる。
弁本体１５は、略円盤状の部材であって、弁座部１６ａに当接して枝管部４ｂ内の流路を閉塞する弁体１５ａと、該弁体１５ａの端部に備えられた、溝部１４に回動自在に配置される回転軸１５ｂと、から構成されてなる。
施工完了時、弁本体１５が枝管部４ｂ内に、回動自在に収納配置された場合、弁本体１５の弁体１５ａは、通常時は自重にて垂立した状態となることで弁座部１６ａに当接し、排水の流路を閉塞する。このため、枝付き管４の主管部４ａから、泡等が逆流を生じても、弁本体１５よりも上流側に逆流が上昇することを防止する。
一方、側面排水口２から流れてきた排水が逆流防止弁３に達した場合、排水の水圧によって弁部材は回転軸１５ｂを中心に回転し、弁体１５ａが弁座部１６ａから離間して排水の流路を開口し、これにより排水を下流側に流出することができる。
即ち、本実施例の枝付き管４の枝管部４ｂは、常時は閉塞し、側面排水口２から排水を生じた場合のみ開口する逆流防止弁３をその内部に備えてなる。また、本実施例では、弁本体１５は回転軸１５ｂと溝部１４とを組み合わせたことでヒンジ部３ａを形成する。即ち、本実施例の逆流防止弁３は、管体（枝管部４ｂ）に対して回動自在に取り付けられるヒンジ部３ａを備えた弁体１５ａからなる。
また、本実施例の枝付き管４と逆流防止弁３においては、枝付き管４の枝管部４ｂ内に弁体１５ａの回動の程度をコントロールする突起部分４ｃを設けてなる。
この突起部分４ｃによって、弁本体１５の弁体１５ａは、最も開いた時（弁座部１６ａから離間した時）、その先端が枝付き管４の主管部４ａ内に突出すると共に、弁体１５ａの平面と、主管部４ａの弁体１５ａに対向する面とが成す角度（図７のＡで示される角度）が略４５度以下となるように構成されてなる。これにより、枝管部４ｂを通過して主管部４ａ内に流入する排水は、主管部４ａの弁体１５ａに対向する面に衝突する場合でも、弁体１５ａがガイドとなって４５度より小さい角度で衝突することとなり、衝突の衝撃が（壁面に正面から衝突する等４５度を超える角度で衝突する場合に比べ）小さくなり、本管部へ合流する際に、合流がスムーズに行われて乱流の発生を防ぎ、排水性能を良好なものとすることができる。
尚、本実施例では上記のように弁本体１５の弁体１５ａは、最も開いた時、弁体１５ａの平面と、主管部４ａの弁体１５ａに対向する面とが成す角度を略４５度以下となるように構成したが、要求されるのは弁体１５ａにガイドされて枝管部４ｂを通過した排水が、対
向する壁面に衝突する際に略４５度以下となることであって、弁体１５ａを通過してから対向する壁面に衝突するまでに重力によって多少下方に屈曲するため、その分を見越して、弁体１５ａが最も開いた時、弁体１５ａの平面と、主管部４ａの弁体１５ａに対向する面とが成す角度が５５度程度までであれば、ほぼ確実に、排水が枝管部４ｂに対向する壁面に衝突する際に略４５度以下とすることができる。もちろん、確実さを求めるのであれば、上記本実施例のように、略４５度以下となるようにすることで確実に略４５度以下とすることができる。
ビス部材１８ａは、枝付き管４を洗面ボウルＳ下面に取り付けるための雄ネジを備えた部材であって、枝付き管４の穴部６ａを貫通した上で、洗面ボウルＳの下面のネジ穴部１８ｂに螺合するように構成されてなる。
また、本実施例の排水配管は、必要に応じ排水口本体５の上端の開口を覆って閉塞する、弾性素材からなる蓋部材１７を備えてなる。 Next, a second embodiment of the present invention will be described with reference to the drawings.
The drainage pipe of the second embodiment of the present invention shown in FIGS. 5 to 8 is a drainage pipe installed in the washbasin S, which is a tank body, and has a branch pipe 4 and a trap pipe 8 described below. It is composed of a side drainage port main body 9, an elbow pipe 10, a hose pipe 11, and a valve main body 15.
Of these, the trap pipe 8, the side drain port main body 9, the elbow pipe 10, and the hose pipe 11 have the same configuration as each member of the first embodiment described in paragraph 0014. , The structure of the branch pipe 4, the valve body 15, and the valve holding member 16 will be described.
The washbasin S is a tank body having a substantially box-like shape with an opening at the top, and has a drainage port 1 having openings penetrating up and down on the bottom surface and a side surface to which a side drainage port main body 9 is attached near the upper end of the side surface. Each of the openings H2 is provided. Further, the lower surface of the peripheral edge of the drain port 1 is provided with a plurality of screw hole portions 18b for screwing the screw member 18a described later.
The branch pipe 4 is a pipe body composed of a main pipe portion 4a extending vertically and a branch pipe portion 4b extending from the side surface of the main pipe portion 4a, and is formed on the upper surface of the main pipe portion 4a. A flange portion 6 projecting in the outer peripheral direction is provided, and holes 6a for the screw member 18a, which will be described later, to penetrate are provided in several places of the flange portion 6.
Further, the outer surface of the branch pipe portion 4b is provided with a male screw that is screwed with the female screw of the nut member 11a of the hose pipe 11, and the rotating shaft 15b of the valve body 15 is rotatably stored inside the male screw. A groove portion 14 is provided.
The valve holding member 16 is a ring-shaped member in which the valve body 15 described later is arranged from the end of the branch pipe portion 4b of the branch pipe 4 to the inside thereof, and then further inserted from the end of the branch pipe portion 4b. A valve seat portion that presses the rotating shaft 15b arranged in the groove portion 14 so as not to come off from the end side, and also prevents the backflow of bubbles from passing through the valve body 15a of the valve body 15 that comes into contact with the valve body 15a during normal times and when backflow occurs. It is equipped with 16a.
The valve body 15 is a substantially disk-shaped member, and is provided at a valve body 15a that abuts on the valve seat portion 16a and closes the flow path in the branch pipe portion 4b, and at the end of the valve body 15a. It is composed of a rotating shaft 15b that is rotatably arranged in the groove portion 14.
When the valve body 15 is rotatably stored and arranged in the branch pipe portion 4b when the construction is completed, the valve body 15a of the valve body 15 is normally in an upright state by its own weight, so that the valve seat It abuts on the portion 16a and closes the drainage flow path. Therefore, even if bubbles or the like generate a backflow from the main pipe portion 4a of the branched pipe 4, the backflow is prevented from rising to the upstream side of the valve body 15.
On the other hand, when the drainage flowing from the side drainage port 2 reaches the check valve 3, the valve member rotates about the rotation shaft 15b due to the water pressure of the drainage, and the valve body 15a separates from the valve seat portion 16a and drains. The flow path of the water can be opened so that the wastewater can flow to the downstream side.
That is, the branch pipe portion 4b of the branch pipe 4 of the present embodiment is provided with a check valve 3 inside which the branch pipe portion 4b is always closed and is opened only when drainage is generated from the side drain port 2. Further, in the present embodiment, the valve body 15 forms the hinge portion 3a by combining the rotating shaft 15b and the groove portion 14. That is, the check valve 3 of this embodiment is composed of a valve body 15a provided with a hinge portion 3a that is rotatably attached to the pipe body (branch pipe portion 4b).
Further, in the branched pipe 4 and the check valve 3 of this embodiment, a protruding portion 4c for controlling the degree of rotation of the valve body 15a is provided in the branched pipe portion 4b of the branched pipe 4.
Due to this protruding portion 4c, when the valve body 15a of the valve body 15 is opened most (when separated from the valve seat portion 16a), its tip protrudes into the main pipe portion 4a of the branched pipe 4 and the valve body 15a The angle formed by the plane of the main pipe portion 4a and the surface of the main pipe portion 4a facing the valve body 15a (the angle shown by A in FIG. 7) is configured to be approximately 45 degrees or less. As a result, even when the drainage that passes through the branch pipe portion 4b and flows into the main pipe portion 4a collides with the surface of the main pipe portion 4a facing the valve body 15a, the valve body 15a serves as a guide and is smaller than 45 degrees. The collision will occur at an angle, and the impact of the collision will be smaller (compared to the case of a collision at an angle exceeding 45 degrees, such as when colliding with the wall surface from the front), and when merging into the main section, the merging will be smooth. It is possible to prevent the occurrence of turbulent flow and improve the drainage performance.
In this embodiment, as described above, when the valve body 15a of the valve body 15 is opened most, the angle formed by the plane of the valve body 15a and the surface of the main pipe portion 4a facing the valve body 15a is approximately 45 degrees. It was configured to be as follows, but what is required is that the drainage that has passed through the branch pipe portion 4b guided by the valve body 15a is approximately 45 degrees or less when colliding with the facing wall surface. Since it bends slightly downward due to gravity from passing through the valve body 15a until it collides with the opposite wall surface, when the valve body 15a is opened most in anticipation of that amount, the plane of the valve body 15a and the main pipe portion 4a If the angle formed by the surface facing the valve body 15a is up to about 55 degrees, it can almost certainly be set to about 45 degrees or less when the drainage collides with the wall surface facing the branch pipe portion 4b. Of course, if certainty is required, it can be surely set to about 45 degrees or less by setting the degree to about 45 degrees or less as in the above embodiment.
The screw member 18a is a member provided with a male screw for attaching the branched pipe 4 to the lower surface of the wash bowl S, and after penetrating the hole 6a of the branched pipe 4, the screw hole on the lower surface of the wash bowl S. It is configured to be screwed into the portion 18b.
Further, the drainage pipe of the present embodiment includes a lid member 17 made of an elastic material that covers and closes the opening at the upper end of the drainage port main body 5 as needed.

上記した各部材から構成される排水配管は、以下のようにして洗面台に施工される。
尚、本実施例において、特に詳述しない場合でも、各配管の接続箇所等は、必要に応じ接着やパッキングを利用した接続により、漏水などが生じないように構成されてなる。
始めに、工場等において、ホース管１１のナット部材１１ａを備えない側の端部に、エルボ管１０の下流側端部を接着によって水密的に接続する。
また、枝付き管４の溝部１４に、弁本体１５の回転軸１５ｂを収納し、更に弁押え部材１６を枝管部４ｂ内に挿入して、枝管部４ｂ内に逆流防止弁３を構成する。
更に、ホース管１１のナット部材１１ａの雌ネジを枝付き管４の枝管部４ｂの雄ネジに螺合させて、枝付き管４をホース管１１に水密的且つ着脱自在に接続する。
上記のようにして枝排水管の一部を構成した上で、施工現場に各部材を搬入し、次のようにして施工を行う。
施工現場において、まず、キャビネットや台座等を設置した上で、その上に洗面ボウルＳを配置して洗面台を構成する。また、この際のキャビネット下の床面には開口が設けられ、開口部分から下水側に繋がる、床下空間に配管された床下配管に管体を接続できるように構成されてなる。
次に、洗面ボウルＳの排水口１周縁の下面に枝付き管４のフランジ部６を当接させ、更にフランジ部６に複数設けられた穴部６ａを介した上でビス部材１８ａをネジ穴部１８ｂに螺合させて、枝付き管４を洗面ボウルＳに接続固定する（前述のように、必要に応じてパッキングを利用し水密的に接続する）。
また、この接続の際には、枝管部４ｂが側面排水口２側を向く方に配置しておく。
次に、洗面ボウルＳの側面開口部Ｈ２の周縁の裏面側に、エルボ管１０の上流側端部を当接させた上で、側面排水口本体９を側面開口部Ｈ２に挿通し、側面排水口本体９の雄ネジを、エルボ管１０の雌ネジに螺合させ、締め付けを行う。
このようにして、側面開口部Ｈ２の周縁を、側面排水口本体９の鍔部９ａとエルボ管１０の上流側端部とで挟持することで、側面排水口本体９及びエルボ管１０が洗面ボウルＳに接続固定される。
更に、枝付き管４の下端にトラップ管８の上流側端部を接続し、トラップ管８の下流側端部を床下配管に接続して、本実施例の排水配管の、洗面台への施工が完了する。
尚、枝付き管４の枝管部４ｂを上記のように構成・接続したことから、本実施例の排水配管は、常時は閉塞し、側面排水口２から排水を生じた場合のみ開口する逆流防止弁３を、枝付き管４の枝管部４ｂに備えた排水配管である。 The drainage pipe composed of the above-mentioned members is installed on the wash basin as follows.
In this embodiment, even if not described in detail, the connection points and the like of the pipes are configured so as not to cause water leakage or the like by connection using adhesion or packing as necessary.
First, in a factory or the like, the downstream end of the elbow pipe 10 is watertightly connected to the end of the hose pipe 11 on the side not provided with the nut member 11a by adhesion.
Further, the rotating shaft 15b of the valve body 15 is housed in the groove portion 14 of the branch pipe 4, and the valve holding member 16 is further inserted into the branch pipe portion 4b to form a check valve 3 in the branch pipe portion 4b. do.
Further, the female screw of the nut member 11a of the hose pipe 11 is screwed into the male screw of the branch pipe portion 4b of the branch pipe 4, and the branch pipe 4 is watertightly and detachably connected to the hose pipe 11.
After constructing a part of the branch drainage pipe as described above, each member is brought into the construction site and the construction is carried out as follows.
At the construction site, first, a cabinet, a pedestal, etc. are installed, and then a wash basin S is arranged on the cabinet to form a wash basin. Further, an opening is provided on the floor surface under the cabinet at this time, and the pipe body can be connected to the underfloor pipe connected to the sewage side from the opening portion.
Next, the flange portion 6 of the branch pipe 4 is brought into contact with the lower surface of the peripheral surface of the drain port 1 of the wash bowl S, and the screw member 18a is screwed through the holes 6a provided in the flange portion 6. The branch pipe 4 is connected and fixed to the wash bowl S by screwing it into the portion 18b (as described above, it is watertightly connected by using packing if necessary).
Further, at the time of this connection, the branch pipe portion 4b is arranged so as to face the side drainage port 2 side.
Next, after the upstream end of the elbow pipe 10 is brought into contact with the back surface side of the peripheral edge of the side opening H2 of the wash bowl S, the side drainage port main body 9 is inserted into the side opening H2 to drain the side. The male screw of the mouth body 9 is screwed into the female screw of the elbow tube 10 to tighten it.
In this way, by sandwiching the peripheral edge of the side opening H2 between the flange portion 9a of the side drain port main body 9 and the upstream end portion of the elbow pipe 10, the side drain port main body 9 and the elbow pipe 10 are placed in a wash bowl. Connected and fixed to S.
Further, the upstream end of the trap pipe 8 is connected to the lower end of the branched pipe 4, the downstream end of the trap pipe 8 is connected to the underfloor pipe, and the drainage pipe of this embodiment is installed on the wash basin. Is completed.
Since the branch pipe portion 4b of the branch pipe 4 is configured and connected as described above, the drainage pipe of this embodiment is always closed and a backflow that opens only when drainage is generated from the side drainage port 2. It is a drainage pipe provided with a prevention valve 3 in a branch pipe portion 4b of a branch pipe 4.

上記のように構成した配管構造において、洗面台を使用し、洗面ボウルＳ内に排水が発生すると、排水は、洗面ボウルＳ底面の排水口１から、枝付き管４の主管部４ａ内部、トラップ管８、の順に通過し、最終的には床下配管から下水側に排出される。
また、上記排水口１に、図７のように蓋部材１７を配置して排水口１からの排水が行われないようにした上で、洗面ボウルＳ内に吐水を行うと、吐水は排出されること無く洗面ボ
ウルＳ内に吐水が溜まってゆく。溜まった吐水の水位が側面排水口２の下端よりも上方に達すると、洗面ボウルＳ内に溜まった吐水は側面排水口２から、側面排水口本体９内部、エルボ管１０、ホース管１１、枝付き管４の枝管部４ｂから、（排水口１からの排水の場合と同様に）枝付き管４の主管部４ａ内、トラップ管８、の順に通過し、最終的には床下配管から下水側に排出される。
尚、上記のように側面排水口２から排水が行われる場合、排水が枝管部４ｂ内を通過する際に、図７に示したように排水の水圧によって枝管部４ｂの内部で弁本体１５が回転軸１５ｂを中心に回動して排水の流路を開放し、排水の通過が行われる。排水が終了し、枝管部４ｂ内から排水が無くなると、弁本体１５は再び弁本体１５の自重によって垂立した状態となることで弁座部１６ａに当接し、排水の流路を閉塞する。
また、この逆流防止弁３の弁体１５ａを排水が通過する際には、前述のように、突起部分４ｃによって弁体１５ａの開口の程度がコントロールされ、弁体１５ａの平面と、主管部４ａの弁体１５ａに対向する面とが成す角度（図７のＡで示される角度）が最大でも略４５度以下となるように構成されてなる。これにより、弁体１５ａが一種のガイドとなって、枝管部４ｂに対向する主管部４ａの壁面に対し、排水は４５度より小さい角度で衝突することとなり、衝突の衝撃が小さくなり、本管部へ合流する際に、合流がスムーズに行われて乱流の発生を防ぎ、排水性能を良好なものとすることができる。
また、上記のようにして排水が行われた際に、トラップ管８内に排水が溜まることで、トラップ管８が、下流側からの臭気や害虫類の逆流を防止する「封水式排水トラップ」となることは、第一実施例で記載した通りである。 In the piping structure configured as described above, when a wash basin is used and drainage is generated in the wash bowl S, the drainage is trapped from the drain port 1 on the bottom surface of the wash bowl S to the inside of the main pipe 4a of the branch pipe 4. It passes through the pipe 8 in this order, and is finally discharged from the underfloor pipe to the sewage side.
Further, when the lid member 17 is arranged in the drainage port 1 as shown in FIG. 7 to prevent the drainage from the drainage port 1 and then the water is discharged into the wash bowl S, the water discharge is discharged. Water spouts accumulate in the wash bowl S without any problems. When the water level of the accumulated water reaches above the lower end of the side drainage port 2, the water discharged in the wash bowl S is discharged from the side drainage port 2 to the inside of the side drainage port main body 9, the elbow pipe 10, the hose pipe 11, and the branch. From the branch pipe portion 4b of the attached pipe 4, passes through the main pipe portion 4a of the branched pipe 4 and the trap pipe 8 in this order (similar to the case of drainage from the drain port 1), and finally sewage from the underfloor pipe. It is discharged to the side.
When drainage is performed from the side drainage port 2 as described above, when the drainage passes through the branch pipe portion 4b, the valve body is inside the branch pipe portion 4b due to the water pressure of the drainage as shown in FIG. 15 rotates around the rotation shaft 15b to open the drainage flow path, and the drainage passes through. When the drainage is completed and the drainage is exhausted from the inside of the branch pipe portion 4b, the valve body 15 is brought into an upright state again due to the weight of the valve body 15 and comes into contact with the valve seat portion 16a to block the drainage flow path. ..
Further, when the drainage passes through the valve body 15a of the check valve 3, as described above, the degree of opening of the valve body 15a is controlled by the protruding portion 4c, and the flat surface of the valve body 15a and the main pipe portion 4a The angle formed by the surface facing the valve body 15a (the angle shown by A in FIG. 7) is configured to be approximately 45 degrees or less at the maximum. As a result, the valve body 15a serves as a kind of guide, and the drainage collides with the wall surface of the main pipe portion 4a facing the branch pipe portion 4b at an angle smaller than 45 degrees, and the impact of the collision is reduced. When merging into the pipe portion, the merging is smoothly performed to prevent the occurrence of turbulent flow, and the drainage performance can be improved.
Further, when drainage is performed as described above, the trap pipe 8 prevents odors and pests from flowing back from the downstream side by collecting the drainage in the trap pipe 8. Is as described in the first embodiment.

上記のように構成した配管構造において、洗面台にて石鹸・洗剤などを使用し、洗面ボウルＳ内に泡混じりの排水を発生させた上で、この排水を排水口１から排出した場合、泡混じりの排水は、洗面ボウルＳ底面の排水口１から、枝付き管４の主管部４ａ内部、トラップ管８、の順に通過し、最終的には床下配管から下水側に排出される。
この場合において、第一実施例と同様に、排水配管上に封水式排水トラップを備えたことで、排水中の泡が下流側に流出しにくくなる状態が発生する。
この場合に、泡は封水の水面上から堆積してゆき、枝付き管４の主管部４ａ内部に充満するが、本実施例では枝付き管４の枝管部４ｂ内において、常時は閉塞し、側面排水口２から排水を生じた場合のみ開口する逆流防止弁３を備えてなる。具体的には、枝管部４ｂの内部において、弁本体１５が弁座部１６ａに通常時当接すると共に、下流側から上流側へ泡の圧力が生じても、そのまま弁本体１５の弁体１５ａが、弁座部１６ａに強く当接して、確実に泡の逆流を防止する。
このため、排水中に石鹸・洗剤などに由来する泡が混入していても、継手管１２の逆流防止弁３によって逆流が防止され、側面排水口２から泡が逆流して溢れ出す、ということは無い。 In the piping structure configured as described above, when soap, detergent, etc. are used on the wash basin to generate drainage mixed with bubbles in the wash basin S, and then this drainage is discharged from the drain port 1, bubbles are generated. The mixed drainage passes from the drainage port 1 on the bottom surface of the washbasin S to the inside of the main pipe portion 4a of the branch pipe 4 and the trap pipe 8 in this order, and is finally discharged from the underfloor pipe to the sewage side.
In this case, as in the first embodiment, by providing the water-sealed drain trap on the drain pipe, a state occurs in which bubbles in the drain are less likely to flow out to the downstream side.
In this case, bubbles are accumulated from above the surface of the sealed water and fill the inside of the main pipe portion 4a of the branched pipe 4, but in this embodiment, the bubbles are always blocked in the branched pipe portion 4b of the branched pipe 4. However, it is provided with a check valve 3 that opens only when drainage is generated from the side drain port 2. Specifically, inside the branch pipe portion 4b, even if the valve body 15 normally abuts on the valve seat portion 16a and foam pressure is generated from the downstream side to the upstream side, the valve body 15a of the valve body 15 remains as it is. However, it strongly abuts on the valve seat portion 16a to surely prevent the backflow of bubbles.
Therefore, even if bubbles derived from soap, detergent, etc. are mixed in the drainage, the backflow prevention valve 3 of the joint pipe 12 prevents the backflow, and the bubbles flow back from the side drainage port 2 and overflow. There is no.

また、上記枝管部４ｂの逆流防止弁３が、第一実施例と同様に、排水中の塵芥や油分、また泡の原因となった石鹸・洗剤成分などの汚濁物質、また弁本体１５の破損等によって動作異常を生じる場合があるが、本実施例では、枝管部４ｂの端部とホース管１１とをナット部材１１ａを利用して接続しており、ナット部材１１ａの螺合を緩めることで、ホース管１１と枝管部４ｂとを容易に着脱・分離することができる。これにより、弁本体１５や弁押え部材１６を取り出して各部材や枝管部４ｂ内部を清掃し、また弁本体１５や弁押え部材１６が破損していた場合は部材の交換を行う等した上で、再度ホース管１１と枝管部４ｂとを接続することで、容易に動作異常を解消したり、破損の修理作業を行うことができる。
即ち、本実施例では、逆流防止弁３を備えた枝排水管の管体である枝管部４ｂが、他の枝排水管の部材であるホース管１１に対して着脱自在に構成され、着脱により開放された箇所から弁体１５ａを枝排水管外に取り出して部材交換や清掃が可能に構成されてなる。 Further, the check valve 3 of the branch pipe portion 4b is the pollutant such as dust and oil in the drainage, the soap / detergent component that caused the bubbles, and the valve body 15 as in the first embodiment. An operation abnormality may occur due to breakage or the like, but in this embodiment, the end of the branch pipe portion 4b and the hose pipe 11 are connected by using the nut member 11a, and the screw of the nut member 11a is loosened. As a result, the hose pipe 11 and the branch pipe portion 4b can be easily attached / detached / separated. As a result, the valve body 15 and the valve pressing member 16 are taken out to clean the inside of each member and the branch pipe portion 4b, and if the valve body 15 and the valve pressing member 16 are damaged, the members are replaced. Then, by connecting the hose pipe 11 and the branch pipe portion 4b again, it is possible to easily eliminate the operation abnormality or repair the damage.
That is, in this embodiment, the branch pipe portion 4b, which is the pipe body of the branch drain pipe provided with the check valve 3, is detachably configured with respect to the hose pipe 11 which is a member of the other branch drain pipe, and is detachable. The valve body 15a is taken out of the branch drainage pipe from the portion opened by the hose so that the members can be replaced and cleaned.

本発明の実施例は以上のようであるが、本発明は上記実施例に限定される物ではなく、主旨を変更しない範囲において自由に変更が可能である。
例えば上記実施例においては、排水配管が施工される排水機器は洗面台の洗面ボウルＳであるが、本発明は上記実施例に限定されるものでは無く、浴槽の排水配管や、流し台の排水配管など、どの様な排水機器の排水配管に採用しても構わない。
また、上記実施例では、枝付き管４の主管部４ａを鉛直方向に、枝管部４ｂを水平方向に、それぞれ配置してなるが、本発明は上記実施例に限定されるものでは無く、主管部４ａを水平方向に、枝管部４ｂを略鉛直方向に配置する等しても構わない。
また、上記実施例では、枝付き管４の主管部４ａと枝管部４ｂとはほぼ９０度となるように構成されてなるが、本発明は上記実施例に限定されるものでは無く、主管部４ａに対して枝管部を例えば７０度など傾斜する角度にて構成しても構わない。
また、上記実施例では、逆流防止弁３を側面排水口２からの流路上に配置して構成してなるが、本発明は上記実施例に限定されるものでは無く、排水口１からの流路上であって、側面排水口２からの排水が合流する開口箇所に逆流防止弁３を配置するように構成しても構わない。 Examples of the present invention are as described above, but the present invention is not limited to the above examples, and can be freely changed without changing the gist.
For example, in the above embodiment, the drainage device to which the drainage pipe is installed is the washbasin bowl S of the washbasin, but the present invention is not limited to the above embodiment, and the drainage pipe of the bathtub and the drainage pipe of the sink are not limited to the above embodiment. It may be used for drainage piping of any drainage equipment.
Further, in the above embodiment, the main pipe portion 4a of the branch pipe 4 is arranged in the vertical direction and the branch pipe portion 4b is arranged in the horizontal direction, but the present invention is not limited to the above embodiment. The main pipe portion 4a may be arranged in the horizontal direction, the branch pipe portion 4b may be arranged in the substantially vertical direction, and the like.
Further, in the above embodiment, the main pipe portion 4a and the branch pipe portion 4b of the branch pipe 4 are configured to be approximately 90 degrees, but the present invention is not limited to the above embodiment, and the main pipe is not limited to the above embodiment. The branch pipe portion may be configured at an angle such as 70 degrees with respect to the portion 4a.
Further, in the above embodiment, the check valve 3 is arranged on the flow path from the side drain port 2, but the present invention is not limited to the above embodiment, and the flow from the drain port 1 is not limited to the above embodiment. The check valve 3 may be arranged on the road at an opening where the drainage from the side drainage port 2 joins.

１排水口２側面排水口
３逆流防止弁３ａヒンジ部
４枝付き管４ａ主管部
４ｂ枝管部４ｃ突起部分
５排水口本体５ａ貫通孔
６フランジ部６ａ穴部
７テールピース管８トラップ管
９側面排水口本体９ａ鍔部
１０エルボ管１１ホース管
１１ａナット部材１２継手管
１３継手管本体１４溝部
１５弁本体１５ａ弁体
１５ｂ回転軸１６弁押え部材
１６ａ弁座部１７蓋部材
１８ａビス部材１８ｂネジ穴部
Ｓ洗面ボウルＨ１底面開口部
Ｈ２側面開口部 1 Drain port 2 Side drain port 3 Backflow prevention valve 3a Hinging part 4 Branched pipe 4a Main pipe part 4b Branch pipe part 4c Protruding part 5 Drain port body 5a Through hole 6 Flange part 6a Hole part 7 Tailpiece pipe 8 Trap pipe 9 Side surface Drain port body 9a Flange 10 Elbow pipe 11 Hose pipe 11a Nut member 12 Fitting pipe 13 Fitting pipe body 14 Groove 15 Valve body 15a Valve body 15b Rotating shaft 16 Valve holding member 16a Valve seat 17 Lid member 18a Screw member 18b Screw hole Part S Washbasin bowl H1 Bottom opening H2 Side opening

Claims

槽体の底面に設けられた排水口と、
槽体の側面に設けられた側面排水口と、
排水口からの排水を下水側に排出する主排水管と、
側面排水口からの排水を主排水管の途中部分に排出する枝排水管と、
常時閉塞して排水口からの泡の逆流が側面排水口に生じることを防止すると共に、側面排水口から排水を生じた場合のみ開口して主排水管側への通水を行う逆流防止弁を備え、
枝排水管は、主排水管と側面排水口を繋ぐホース管を有し、
逆流防止弁はホース管よりも主排水管側に取り付けられてなる槽体の排水配管において、
主排水管に沿って設けられる管体である主管部、該主管部の側面から延出された枝管部、からなる枝付き管を備え、
枝付き管の主管部は主排水管側に、枝管部は側面排水口からの配管に、それぞれ接続されると共に、
枝管部内に逆流防止弁を備えたことを特徴とする排水配管。 The drainage port provided on the bottom of the tank and
The side drainage port provided on the side of the tank body and
The main drainage pipe that discharges the drainage from the drainage port to the sewage side,
A branch drainage pipe that discharges drainage from the side drainage port to the middle part of the main drainage pipe,
A check valve that is always closed to prevent the backflow of bubbles from the drainage port from occurring at the side drainage port and opens only when drainage is generated from the side drainage port to allow water to flow to the main drainage pipe side. Prepare,
The branch drainage pipe has a hose pipe that connects the main drainage pipe and the side drainage port.
The backflow prevention valve is installed in the drainage pipe of the tank body, which is attached to the main drainage pipe side of the hose pipe.
It is provided with a branch pipe consisting of a main pipe portion which is a pipe body provided along the main drainage pipe and a branch pipe portion extending from the side surface of the main pipe portion.
The main pipe part of the branch pipe is connected to the main drain pipe side, and the branch pipe part is connected to the pipe from the side drain port.
A drainage pipe characterized by having a check valve inside the branch pipe.

槽体の底面に設けられた排水口と、
槽体の側面に設けられた側面排水口と、
排水口からの排水を下水側に排出する主排水管と、
側面排水口からの排水を主排水管の途中部分に排出する枝排水管と、
常時閉塞して排水口からの泡の逆流が側面排水口に生じることを防止すると共に、側面排水口から排水を生じた場合のみ開口して主排水管側への通水を行う逆流防止弁を備え、
枝排水管は、主排水管と側面排水口を繋ぐホース管を有し、
逆流防止弁はホース管よりも主排水管側に取り付けられてなる槽体の排水配管において、
主排水管に沿って設けられる管体である主管部、該主管部の側面から延出された枝管部、からなる枝付き管を備え、
枝付き管の主管部は主排水管側に、枝管部は側面排水口からの配管に、それぞれ接続されると共に、
枝管部の端部に、逆流防止弁を備えた継手管を接続することを特徴とする排水配管。 The drainage port provided on the bottom of the tank and
The side drainage port provided on the side of the tank body and
The main drainage pipe that discharges the drainage from the drainage port to the sewage side,
A branch drainage pipe that discharges drainage from the side drainage port to the middle part of the main drainage pipe,
A check valve that is always closed to prevent the backflow of bubbles from the drainage port from occurring at the side drainage port and opens only when drainage is generated from the side drainage port to allow water to flow to the main drainage pipe side. Prepare,
The branch drainage pipe has a hose pipe that connects the main drainage pipe and the side drainage port.
The backflow prevention valve is installed in the drainage pipe of the tank body, which is attached to the main drainage pipe side of the hose pipe.
It is provided with a branch pipe consisting of a main pipe portion which is a pipe body provided along the main drainage pipe and a branch pipe portion extending from the side surface of the main pipe portion.
The main pipe part of the branch pipe is connected to the main drain pipe side, and the branch pipe part is connected to the pipe from the side drain port.
A drainage pipe characterized by connecting a joint pipe provided with a check valve to the end of a branch pipe.

槽体の底面に設けられた排水口と、
槽体の側面に設けられた側面排水口と、
排水口からの排水を下水側に排出する主排水管と、
側面排水口からの排水を主排水管の途中部分に排出する枝排水管と、
常時閉塞して排水口からの泡の逆流が側面排水口に生じることを防止すると共に、側面排水口から排水を生じた場合のみ開口して主排水管側への通水を行う逆流防止弁を備え、
枝排水管は、主排水管と側面排水口を繋ぐホース管を有し、
逆流防止弁はホース管よりも主排水管側に取り付けられてなる槽体の排水配管において、
前記逆流防止弁の弁体の開き角度に制限を行い、弁体を通過した排水が、弁体に対向する管体の壁面に対して略４５度よりも小さい角度にて衝突するようにしたことを特徴とする排水配管。 The drainage port provided on the bottom of the tank and
The side drainage port provided on the side of the tank body and
The main drainage pipe that discharges the drainage from the drainage port to the sewage side,
A branch drainage pipe that discharges drainage from the side drainage port to the middle part of the main drainage pipe,
A check valve that is always closed to prevent the backflow of bubbles from the drainage port from occurring at the side drainage port and opens only when drainage is generated from the side drainage port to allow water to flow to the main drainage pipe side. Prepare,
The branch drainage pipe has a hose pipe that connects the main drainage pipe and the side drainage port.
The backflow prevention valve is installed in the drainage pipe of the tank body, which is attached to the main drainage pipe side of the hose pipe.
The opening angle of the valve body of the check valve is limited so that the drainage that has passed through the valve body collides with the wall surface of the pipe body facing the valve body at an angle smaller than about 45 degrees. Drainage pipe featuring.

上記排水配管において、逆流防止弁は、
板状の弁体と、
該弁体を枝排水管に対して回動自在に取り付けるヒンジ部と、
枝排水管に備えられた、弁体が当接する弁座部と、
からなり、
通常時は弁体が弁座部に接して、逆流した排水や排水中の泡の通過を防止すると共に、
排水時には弁座部から離間して側面排水口からの排水や排水中の泡を通過させて排水を行うことを特徴とする、請求項１乃至請求項３のいずれか一つに記載の排水配管。 In the above drainage pipe, the check valve is
Plate-shaped valve body and
A hinge part that rotatably attaches the valve body to the branch drainage pipe,
The valve seat part that the valve body contacts, which is provided in the branch drainage pipe,
Consists of
Normally, the valve body comes into contact with the valve seat to prevent backflow drainage and bubbles in the drainage from passing through.
The drainage pipe according to any one of claims 1 to 3 , characterized in that drainage is performed by passing drainage from a side drainage port or bubbles in the drainage at a distance from the valve seat portion at the time of drainage. ..

上記排水配管において、
逆流防止弁を備えた管体が、他の枝排水管の部材に対して着脱自在に構成され、着脱により開放された箇所から弁体を枝排水管外に取り出し可能に構成したことを特徴とする、請求項１乃至請求項４のいずれか１つに記載の排水配管。 In the above drainage pipe
The pipe body equipped with the check valve is detachably configured with respect to the members of other branch drainage pipes, and the valve body can be taken out of the branch drainage pipe from the part opened by attachment / detachment. The drainage pipe according to any one of claims 1 to 4.

上記排水配管において、
主排水管に沿って設けられる管体である主管部、該主管部の側面から延出された枝管部、
からなる枝付き管を備え、
枝付き管の主管部は主排水管側に、枝管部は側面排水口からの配管に、それぞれ接続されると共に、
枝管部内に逆流防止弁を備えたことを特徴とする、請求項３に記載の排水配管。 In the above drainage pipe
Main pipe part which is a pipe body provided along the main drainage pipe, branch pipe part extending from the side surface of the main pipe part,
Equipped with a branching tube consisting of
The main pipe part of the branch pipe is connected to the main drain pipe side, and the branch pipe part is connected to the pipe from the side drain port.
The drainage pipe according to claim 3 , wherein a check valve is provided in the branch pipe portion.

上記排水配管において、
主排水管に沿って設けられる管体である主管部、該主管部の側面から延出された枝管部、
からなる枝付き管を備え、
枝付き管の主管部は主排水管側に、枝管部は側面排水口からの配管に、それぞれ接続されると共に、
枝管部の端部に、逆流防止弁を備えた継手管を接続することを特徴とする、請求項３に記載の排水配管。 In the above drainage pipe
Main pipe part which is a pipe body provided along the main drainage pipe, branch pipe part extending from the side surface of the main pipe part,
Equipped with a branching tube consisting of
The main pipe part of the branch pipe is connected to the main drain pipe side, and the branch pipe part is connected to the pipe from the side drain port.
The drainage pipe according to claim 3 , wherein a joint pipe provided with a check valve is connected to the end of the branch pipe portion.