JP4303974B2

JP4303974B2 - Piping joint fixing structure of septic tank

Info

Publication number: JP4303974B2
Application number: JP2003009675A
Authority: JP
Inventors: 亮夫喜多
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2003-01-17
Filing date: 2003-01-17
Publication date: 2009-07-29
Anticipated expiration: 2023-01-17
Also published as: JP2004216335A

Description

【０００１】
【発明の属する技術分野】
本発明は、外周にネジ部を形成した筒状部材と、この筒状部材に一体形成したフランジ部と、ネジ部に螺合するナットとを備えて配管継手を構成すると共に、浄化槽の壁体に形成された開口に前記筒状部材を挿通し、ネジ部にナットを螺合させて締付けることによりフランジ部とナットとからの挟圧力によって浄化槽の壁体を挟み込む形態で配管継手を取り付ける浄化槽の配管継手固定構造に関する。
【０００２】
【従来の技術】
従来、上記のように構成された浄化槽の配管継ぎ手に関連する技術として、フランジ付きのネジ筒と、このネジ筒の雄ネジ筒部に螺合するナットとで成る配管固定具（本発明の配管継手）が存在する。この従来の技術では、隔壁（本発明の壁体）形成にされた貫通孔にネジ筒を挿通し、ネジ筒のフランジ部と隔壁との間にシール材を挟み込み、ネジ筒にナットを螺合させて締付けることにより、配管固定具を隔壁に支持しており、ネジ筒の内部に挿通した配管をとネジ筒との間にＯリングを配置している（例えば、特許文献１参照）。
【０００３】
【特許文献１】
特開平１１‐１０４６６１号公報（段落番号〔００２２〕〜〔００２７〕、図２）
【０００４】
【発明が解決しようとする課題】
浄化槽の内部空間に連通する配管を考えるに、例えば、浄化槽に内部に汚水を供給する配管や、浄化処理後の処理水を排出する配管は浄化槽の外壁体に固定されるものである。そして、この配管と浄化槽の外壁体との間には特許文献１に記載されたものと同様にシール材を配置すことにより配管外からの水が侵入することや、配管外への水の漏出を防止するよう構成される。
【０００５】
又、配管継手を介して浄化槽の外壁体に配管を固定するものにおいて、配管と浄化槽の外壁体とのシール性能を考えると、このシール性能は配管継手の構造ばかりでなく、シール材の性能に左右されるものである。従って、配管外からの水が侵入することや、配管外への水の漏出を防止するシール材を最適な形態で使用することが望まれている。
【０００６】
浄化処理後の処理水を排出する部位に消毒槽を備えた浄化槽を考えるに、従来からの浄化槽では消毒槽は上方に開放した独立した構造の槽として形成され、浄化槽の外壁体の内面に接する位置に配置されている。従って、浄化処理後の処理水を排出する配管を支持する構造として、消毒槽の壁体と、浄化槽の外壁体との接触する部位に開口を形成し、これらの開口に配管継手を挿通させた状態で、フランジ部とナットとの締付けにより配管継手を支持固定するものが採用されている。
【０００７】
しかしながら、２枚の壁体を重ね合わせた部位に開口を形成したものでは、夫々の壁体同士の間から水漏れや、水の浸入を生じやすく、配管継手を支持固定する場合には、夫々の壁体同士の間で開口を取り囲む部位にシール材を介在させる必要があった。又、配管継手を支持する場合には、配管継手のフランジ部と壁体との間、あるいは、ナットと壁体との間にシール材を介在させる必要もあるため、シール材を注入する作業や塗布する作業に手間が掛かるものであった。つまり、シール材を注入することや塗布する作業を考えた場合に、配管継手のフランジ部と壁体との間、及び、ナットと壁体との間に対しては、これらの一方にシール材を介在させれば良いが、壁体同士の間にシール材を介在させることは必須となり、作業の困難性の点で改善の余地があった。尚、浄化槽に使用されているシール材は、パッキンを貼り付ける形態で用いることもあるが、エポキシ樹脂のように主剤と硬化剤とを混合したペースト状のものを用いることが多く、専用の機器を用いて必要とする位置に充填する、あるいは、塗布する作業形態が多く採用されている。
【０００８】
又、例えば、配管継手と壁体との間におけるシール性を考えると、ペースト状のシール材を用いるものでは、配管継手を壁体に備えた後においても必要とする量のシール材を残存させる必要があるものの、単純にナットの締付けで挟圧力を作用させて固定するものでは、シール材がフランジ部等の外部に流れ出してしまいシール性を低下させる不都合に繋がることもあった。
【０００９】
本発明の目的は、複数の壁体が重ね合わせ状態で配置された部位に配管継手を支持する場合でも確実に配管継手を支持し得る浄化槽の配管継手支持構造を合理的に得る点にある。
【００１０】
【課題を解決するための手段】
本発明の請求項１に係る浄化槽の配管継手固定構造の特徴、作用・効果は次の通りである。
〔特徴〕
外周にネジ部を形成した筒状部材と、この筒状部材に一体形成したフランジ部と、ネジ部に螺合するナットとを備えて配管継手を構成すると共に、浄化槽の壁体に形成された開口に前記筒状部材を挿通し、ネジ部にナットを螺合させて締付けることによりフランジ部とナットとからの挟圧力によって浄化槽の壁体を挟み込む形態で配管継手を取り付ける浄化槽の配管継手固定構造であって、前記浄化槽の壁体が重なり合う複数の壁体で形成され、夫々の壁体に形成される開口のうち隣り合う壁面に形成されたものの開口径に差異が設定され、かつ、夫々の開口の周部をシールし得る部位に、大径の開口の側からシール材を形成した状態で前記複数の壁体を前記フランジ部と前記ナットとからの挟圧力で締付け固定する点にある。
【００１１】
〔作用・効果〕
上記特徴によると、重なり合う壁体に対して直径が異なる開口が形成されるので、大径の開口の側からシール材を形成することにより大径の開口の周部と隣接する壁体との境界部分のシールを実現するものとなり、このようにシール材を形成する際の工程を低減することが可能となる。又、シール材を形成した後にナットを締付け操作することによりフランジ部とナットとからの挟圧力でシール材が形成された部位が密接する状態を維持しながら配管継手を固定できる。その結果、シール材を形成する工程を低減して作業能率が向上する配管継手固定構造が得られたのである。
【００１２】
本発明の請求項２に係る浄化槽の配管継手固定構造の特徴、作用・効果は次の通りである。
〔特徴〕
請求項１記載の浄化槽の配管継手固定構造において、前記複数の壁体に形成された開口が、壁体の重なり合い方向で直径が大きくなる、又は、壁体の重なり合い方向で直径が小さくなるよう同軸芯上に配置されると共に、壁体への配管継手の取り付けに伴って前記複数の開口の少なくとも１つに嵌り込む嵌合部が、前記フランジ部と、前記ナットと、前記ネジ部に外嵌されるワッシャ部材との内の少なくとも１つにおける前記壁体側を向いた面を備えた挟圧部に形成してある点にある。
【００１３】
〔作用・効果〕
上記特徴によると、大径の開口の側からシール材を形成することにより、大径の開口の周部と隣接する壁体との境界部分のシールを実現すると共に、このようにシール材を形成した後に挟圧部の嵌合部を前記開口に嵌り込む状態で配置してナットを締付けることにより壁体に対して位置決め状態で配管継手を支持できる。その結果、壁体に形成する開口の直径の設定、及び、挟圧部の形状の設定により高いシール性で位置精度高く配管継手を支持できるものとなった。
【００１４】
本発明の請求項３に係る浄化槽の配管継手固定構造の特徴、作用・効果は次の通りである。
〔特徴〕
請求項２記載の浄化槽の配管継手固定構造において、前記挟圧部が、前記ネジ部の軸芯周りに環状に形成してあると共に、その環状径方向での外周側が、内周側より前記壁体に近接する形状に成型した部分を備えている点にある。
【００１５】
〔作用・効果〕
上記特徴によると、前記ネジ部の軸芯周りに環状に形成してある前記挟圧部の環状径方向での外周側が、内周側より壁体に近接する形状に成型してあるから、シール材は挟圧部の環状径方向での内周側に封じ込める状態で蓄えられるものとなる。その結果、該配管継手と壁体との間を確実にシール材を充填し、高いシール性を実現するものとなった。
【００１６】
本発明の請求項４に係る浄化槽の配管継手固定構造の特徴、作用・効果は次の通りである。
〔特徴〕
請求項２又は３記載の浄化槽の配管継手固定構造において、前記フランジ部と、前記ナット部と、前記ネジ部に外嵌されるワッシャ部材との内の少なくとも１つにおける前記壁体側を向いた面を備えた挟圧部に、前記シール材を貯留可能な凹部を形成してある点にある。
【００１７】
〔作用・効果〕
上記特徴によると、ナットの締付けによって配管継手を壁体に支持した場合でも、挟圧部に形成された凹部の空間の内部にシール材が封じ込められる状態で蓄えられるものとなる。その結果、ナットの締付け操作を行った後にも挟圧部におけるシール性を長期に亘って維持できるものとなった。
【００１８】
本発明の請求項５に係る浄化槽の配管継手固定構造の特徴、作用・効果は次の通りである。
〔特徴〕
請求項１記載の浄化槽の配管継手固定構造において、前記複数の壁体に形成された開口が、壁体の重なり合い方向で直径が大きくなる、又は、壁体の重なり合い方向で直径が小さくなるよう同軸芯上に配置されると共に、互いに隣接する前記壁体のうち、小径の開口が形成してある壁体の開口縁に、大径の開口が形成してある壁体の開口に嵌り込むリング状のリブを壁体に一体形成してある点にある。
【００１９】
〔作用・効果〕
上記特徴によると、隣接する壁体の一方の開口に対して他方に形成されたリング状のリブを嵌り込む状態で配置することによって夫々の壁体の位置変位を阻止できるばかりでなく、大径側の開口とリブとの間にシールを形成することによって夫々の壁体同士の間のシールも実現できる。その結果、壁体同士の相対位置関係を精度高く維持しながら、高いシール性も実現するものとなった。
【００２０】
本発明の請求項６に係る浄化槽の配管継手固定構造の特徴、作用・効果は次の通りである。
〔特徴〕
請求項５記載の浄化槽の配管継手固定構造において、前記リブの突出量が隣接する壁体の厚みより小さい値に設定されると共に、このリブが嵌り込む開口に対してリブと反対側から嵌り込む嵌合部が、前記フランジ部と、ナットと、前記ネジ部に外嵌されるワッシャ部材との内の少なくとも１つにおける前記壁体側を向いた面を備えた挟圧部に形成してある点にある。
【００２１】
〔作用・効果〕
上記特徴によると、嵌合部を開口に嵌め込むことによって壁体に対して位置決め状態で配管継手を支持できる。その結果、位置精度高く配管継手を支持固定できるものとなった。
【００２２】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。
〔第１の実施の形態〕
図１及び図２に示すように、ケース状の本体Ａの上部位置の一方の端部に原水流入口Ｉｎを形成し、本体Ａの他方の端部に放流口Ｅｘを形成し、この本体Ａの内部に原水流入口Ｉｎ側から放流口Ｅｘの側に第一仕切壁Ｂ１、第二仕切壁Ｂ２、第三仕切壁Ｂ３を、この順序で配置すると共に、この本体Ａの内部において前記仕切壁Ｂ（前記第一、第二、第三仕切壁の上位概念）で区画された空間内に嫌気処理槽Ｎ、好気処理槽Ｅ、処理水槽Ｔ、消毒槽Ｑ夫々を形成して浄化槽が構成されている。
【００２３】
この浄化槽は、地面下に埋設して設置されるものであり、地面下に設置した状態で点検や保守を行うため、本体Ａの上部位置には上方に開放し、かつ、開閉自在な蓋を有する複数のマンホール部Ｈを形成してある。
【００２４】
前記本体Ａ及び仕切壁Ｂは夫々ともＳＭＣ（シートモールディングコンパウンド）を成型材料として用いたＦＲＰで成っている。前記ＳＭＣは、強化材としてのガラス繊維に対して不飽和ポリエステル樹脂や、充填材、その他の添加物を含浸させてシート状に形成したものであり、このＳＭＣを凸型成形型と凹型成形型との間に充填した後、プレス加工機械を使用した加圧、加熱処理工程により、本体Ａ及び仕切壁Ｂを成形しているのである。
【００２５】
この浄化槽では前記原水流入口Ｉｎに固定した配管継手Ｋに対して原水用の配管１を支持し、放流口Ｅｘに固定した配管継手Ｊに対して放流用の配管１を支持している。この放流口Ｅｘに対して配管継手Ｊを固定する構造が本発明の配管継手固定構造に対応するものである。又、この配管継手Ｊは、図１及び図２に示す構成の浄化槽だけに適用されるものでなく、異なる構成の浄化槽にも適用可能である。
【００２６】
つまり、図３〜図８に示すように、前記放流口Ｅｘの部位には、前記消毒槽Ｑを構成する壁体２と、浄化槽の本体Ａを構成する壁体２とが傾斜姿勢で重ね合わせ状態で配置されると共に、夫々の壁体２に対して、その内周に一対の係合片２Ｔを突設した円形となる開口２Ａ、２Ａを同軸芯上に形成し、この開口２Ａに対して配管継手Ｊが固定されている。これらの開口２Ａ、２Ａのうち浄化槽の内側に配置されるもの（消毒槽Ｑの壁体２に形成された開口２Ａ）の直径を、外側の壁体２の開口の直径より大きく設定してある。尚、開口２Ａの内周に形成する係合片２Ｔは何れか一方の開口２Ａにのみ形成するものであっても良い。
【００２７】
前記配管継手Ｊは、外周にネジ部５Ａを形成し、かつ、フランジ部５Ｂを一体形成した樹脂製の筒状部材５と、筒状部材５に外嵌する樹脂製のワッシャ部材６と、前記ネジ部５Ａに螺合する樹脂製のナット７とを備えて構成されている。この配管継手Ｊは、配管１を水平姿勢に支持すると共に、配管継手Ｊを壁体２、２に固定した状態で良好なシール状態を現出するよう構成されたものであり、その構成を以下に詳述する。
【００２８】
つまり、前記筒状部材５のネジ部５Ａは軸芯Ｘ周りで筒状部材５の外周に形成されるものであり、その外径を前記小径側の開口２Ａに対して殆ど隙間なく挿入できる程度の寸法に設定してある。又、前記筒状部材３のフランジ部５Ｂは、前記壁体２Ａ、２Ａの傾斜姿勢に沿うように筒状部材５の軸芯Ｘを基準にして該フランジ部５Ｂの全体が傾斜する姿勢で形成され、このフランジ部５Ｂのうち壁体２に対向する挟圧面（挟圧部に相当）５Ｐには、前記大径側の開口２Ａに嵌り込む嵌合部５Ｄを突出形成してある。更に、筒状部材５の内面の内端位置には前記配管１の内端位置を決めるストッパー部５Ｃを一体形成し、ネジ部５Ａには前記軸芯Ｘの方向に沿って一対の溝部５Ｇを形成してある。
【００２９】
前記フランジ部５Ｂの挟圧面５Ｐのうち、嵌合部５Ｄと、この嵌合部５Ｄの外周に位置する環状部５Ｅとを、外周側が壁体側に近接し、内周側が壁体から離間する側に変位するホーン内面状に成形している。又、図８に示すように環状部５Ｅの外周部が消毒槽Ｑの壁体２に接触した状態で、嵌合部５Ｄの突出端が浄化槽の本体Ａの壁体２に接触するよう嵌合部５Ｄの突出量を設定してある。
【００３０】
前記ワッシャ部材６は、筒状部材５に外嵌した状態で回転不能に支持されるよう前記溝部５Ｇに係入する一対の係合片６Ｔを一体形成してあり、このワッシャ部材６のうち壁体２と対向する側に配置される挟圧面６Ｐを、前記壁体２に沿うよう前記軸芯Ｘを基準にして傾斜姿勢に形成してあり、この挟圧面６Ｐの反対側に位置する側に前記ナット７が接触する被押圧面６Ｖを、前記軸芯Ｘに対して直交する姿勢に形成してある。前記ナット７は筒状部材５のネジ部５Ａに螺合するネジ面（雌ネジ）７Ａと、回転操作力を受ける複数の被操作片７Ｂとを一体形成してある。
【００３１】
このように配管継手Ｊが構成されているので、この配管継手Ｊを浄化槽の壁体２、２に固定する際には、図６に示すように、先ず本体Ａの壁体２に形成された開口２Ａの内面側にシール材Ｓを注入・形成した後、消毒槽Ｑの壁体２を重ね合わせる。そして、この開口２Ａの係合片２Ｔを、その溝部５Ｇを係合させる状態で、この開口２Ａに対して筒状部材５を挿通し、次に、開口２Ａに挿通した状態の筒状部材５のネジ部５Ａの溝部５Ｇに、その係合片６Ｔを係入させる状態でワッシャ部材６を嵌めこみ、筒状部材５のネジ部５Ａにナット７のネジ部７Ａを螺合させる。このように開口２Ａに対して筒状部材５を挿入した状態では、開口２Ａの係合片２Ｔと筒状部材５の溝部５Ｇとが係合するので、この筒状部材５は壁体２に対して回転不能な状態で支持され、又、筒状部材５の溝部５Ｇにワッシャ部材６の係合片６Ｔが係合するので、ワッシャ部材６は筒状部材５に対して回転不能な状態で支持される。
【００３２】
又、シール材Ｓを形成する部位は、図７に示す如く筒状部材５のフランジ部における挟圧面５Ｐの側であっても良く、同図において仮想線で示すように重ね合わせ状態に壁体２、２の開口２Ａの部位であっても良い。尚、２つの壁体２、２同士の間におけるシール性を向上させるため、図６において大径の開口２Ａが形成された壁体２（Ｑ）の開口縁のうち、対向する壁体２の側（同図では右側）に面取りを行うことや、凹部を形成することで、２つの壁体２、２を重ね合わせた状態でシール材Ｓを貯留する空間を作り出すよう構成することも可能である。
【００３３】
又、シール材Ｓはエポキシ樹脂系やポリウレタン樹脂系のように主剤と硬化剤との混合によって硬化するものが使用され、注入に際して主剤と硬化剤との２液混合して注入を行うディスペンサー等が使用される。
【００３４】
この後、ナット７の回転により締付け操作を行うことにより、図８に示す如く、挟圧力により夫々の壁体２、２の開口２Ａ、２Ａの部位にシール材Ｓが充填されると同時に、このシール材Ｓが嵌合部５Ｄ、及び、前記環状部５Ｅの側に充填され、更に、この挟圧力の作用により小径の開口２Ａとネジ部５Ａとの隙間からワッシャ部材６の側にシール材Ｓが流れ出てネジ部５Ａと壁体２、２夫々の開口２Ａ、２Ａの内周部位に加圧充填される。これにより、壁体２、２と筒状部材５の間に微細な空間が存在しても、その空間の内部までシール材Ｓが入り込んだ状態で固化しシール状態を維持するものとなる。そして、この支持状態においては前記嵌合部５Ｄと、環状部５Ｅとの内周側に形成される空間（ホーン内面状に形成した嵌合面と壁体との間の空間）にシール材Ｓを封じ込める状態で貯留し、シール材Ｓが不足することなく良好なシール状態を継続する。
【００３５】
この後に筒状部材５の内面あるいは配管１の外面、又は、夫々対してに接着剤を塗布し、筒状部材５の内面に対して前記ストッパー部５Ｃと接当する位置まで配管を挿入することによって該配管継手Ｊに対して配管１が強固に支持されるものとなる。
【００３６】
このように本発明では、重ね合わせて配置した壁体２、２に形成される開口２Ａ、２Ａの開口径に差異を設定するだけで、シール材Ｓを形成する工程を１度で済むものにしており、シール材Ｓを形成した後には配管継手Ｊをセットし、ナット７を締付ける操作を行うだけで、フランジ部５Ｂとナット７からの挟圧力によって配管継手Ｊを壁体２、２に対して確実に支持すると同時に良好なシール状態を現出するものにしている。特に、フランジ部５Ｂに嵌合部５Ｄを形成したことにより、この配管継手Ｊと壁体２との相対的な位置関係を適正な位置に精度高く維持するものとなり、しかも、フランジ部５Ｂの挟圧面５Ｐをホーン内面状に形成してあるので、この配管継手Ｊと壁体２との隙間にシール材Ｓを貯留しながらシール材Ｓを確実に加圧充填して封止し、この配管継手Ｊの部位において浄化槽の外部空間に対する浄化槽内部からの漏水を阻止するばかりでなく、浄化槽外部から浄化槽内部への水の浸入を阻止するものとなっている。
【００３７】
又、本発明は、例えば、シール材Ｓとして、パテ状の素材のように圧力が作用することにより自在に変形流動する可塑性のもや、柔軟に変形し得る樹脂（エラストマー等）をリング状に予め成型し、筒状部材５に外嵌する形態で貼り付ける形態等でセットして用いることが可能であり、又、本発明の配管継手Ｊを浄化槽内部の仕切壁Ｂに対して配管を支持するために使用することも可能である。
【００３８】
特に、この第１の実施の形態の変形例として、図９及び図１０に示すように、配管継手Ｊを外周にネジ部５Ａを形成した樹脂製の筒状部材５と、このネジ部５Ａに螺合する樹脂製のナット７とで構成することも可能である（前記第１の実施の形態と同じ機能を有するものには、第１の実施の形態と共通の番号、符号を付している）。つまり、筒状部材５の軸芯Ｘに対して傾斜する姿勢の仮想平面上に挟圧面（挟圧部に相当）５Ｐが位置するようフランジ部５Ｂを形成すると共に、この仮想平面と直交する姿勢の軸芯Ｙを軸芯とするネジ部５Ａを筒状部材５に形成して第１の実施の形態のワッシャ部材６を用いないで済むものにしている。
【００３９】
又、この変形例では、筒状部材５の嵌合部５Ｄの外周部に一対の嵌合部５Ｇを形成し、この嵌合部５Ｇに嵌合する係合片２Ｔを内側の壁面２の開口２Ａの内周に形成して、壁体２、２に対する筒状部材５の姿勢を決めるよう構成してある。このように嵌合部５Ｇを形成したものは、第１の実施の形態のように筒状部材５の外面に形成した溝部５Ｇと比較して、軸芯Ｘの方向に水が流れる空間が形成されないのでシール性が一層向上する。
【００４０】
そして、重ね合わせ状態で配置した壁体２、２に形成した異なる直径の開口２Ａ、２Ａに対して配管継手Ｊを固定する場合には、前述と同様にシール材Ｓを注入・形成した後に、嵌合部５Ｇと係合片２Ｔとが嵌合する状態となるよう夫々を配置した後、筒状部材５のネジ部５Ａにナット７のネジ部７Ａを螺合させて回転により締め付けることにより、壁体２、２に対して配管継手Ｊが強固に支持されるのである。特に、この構成では、前記ワッシャ部材を用いずともナット７の挟圧面７Ｐとフランジ部５Ｂの挟圧面５Ｐとで壁体２、２を直接締付けて固定することが可能となるので、ワッシャ部材を省略して少ない部品点数での実施も可能となっている。尚、この変形例においては、フランジ部５Ｂに形成される嵌合部５Ｄの突出量を消毒層Ｑの壁体２の厚みと一致させている。
【００４１】
更に、この変形例においては、同図に示す如くフランジ部５Ｂの嵌合部５Ｄと環状部５Ｅとに対して複数の凹部Ｄを形成することにより、ナットＴの締付け操作を行った場合にはシール材Ｓを凹部Ｄに貯留してシール性を向上させ得るものにしている。
【００４２】
〔第２の実施の形態〕
この第２の実施の形態では前記第１の実施の形態と同じ機能を有するものには、第１の実施の形態と共通の番号、符号を付している。
【００４３】
この第２の実施の形態では、図１１に示すように、浄化槽の本体Ａの壁体２に形成される開口２Ａの直径を、消毒槽Ｑの壁体２に形成される開口２Ａより大きく設定し、前記ワッシャ部材６の挟圧面（挟圧部に相当）６Ｐに対して大径側の開口に嵌り込む嵌合部６Ｄを突出形成し、この嵌合部６Ｄの外周位置に環状部６Ｅを形成している。そして、小径の開口２Ａが形成された壁面２にシール材Ｓを形成することや、ワッシャ部材６の挟圧面６Ｐの側にシール材Ｓを形成する等、シール材Ｓを１工程で塗布した後に、ナット７の締付け操作によって配管継手Ｊを壁体２に固定できるのである。又、この第２の実施形態において、筒状部材５を壁体２に対して回転不能に支持するための構造として、第１の実施の形態の変形例に記載した構造を採用しても良い。
【００４４】
特に、この第２の実施の形態の変形例として、図１２に示すように、配管継手Ｊを外周にネジ部５Ａを形成した樹脂製の筒状部材５と、このネジ部５Ａに螺合する樹脂製のナット７とを構成することも可能である（前記第２の実施の形態と同じ機能を有するものには、第２の実施の形態と共通の番号、符号を付している）。つまり、筒状部材５のフランジ部５Ｂを軸芯Ｘに対して傾斜する姿勢の仮想平面上に挟圧面５Ｐが位置するようフランジ部５Ｂを形成すると共に、この仮想平面と直交する姿勢の軸芯Ｙを軸芯とするネジ部５Ａを筒状部材５に形成して第２の実施の形態のワッシャ部材６を用いないで済むものにしている。
【００４５】
又、この変形例では、ナット（挟圧部に相当）７に形成される嵌合部７Ｄの突出量を消毒層Ｑの壁体２の厚みと一致させ、同図に示す如くナット７の嵌合部７Ｄと環状部７Ｅとに対して複数の凹部Ｄを形成することにより、ナットＴの締付け操作を行った場合にはシール材Ｓを凹部Ｄに貯留してシール性を向上させ得るものにしている。
【００４６】
〔第３の実施の形態〕
この第３の実施の形態では前記第１の実施の形態と同じ機能を有するものには、第１の実施の形態と共通の番号、符号を付している。
【００４７】
この第３の実施の形態では、図１３に示すように、浄化槽の本体Ａの壁体の開口２Ａを、消毒槽Ｑの壁体２の開口２Ａより大径に形成すると共に、消毒槽Ｑの壁体２の開口２Ａの開口縁に沿って前記大径の開口２Ａに嵌り込む環状のリブ２Ｂを突設している。このリブ２Ｂの突出量を大径の開口２Ａが形成された壁体２の厚みと等しく設定することにより、リブ２Ｂを大径の開口２Ａに嵌め込む状態で配置できる、この嵌め込み状態ではリブ２Ｂの表面と壁体２の表面とを等しくする。又、この第３の実施形態において、筒状部材５を壁体２に対して回転不能に支持するための構造として、第１の実施の形態の変形例に記載した構造を採用しても良い。
【００４８】
この構成により、壁体２の開口２Ａに筒状部材５を挿入した後、リブ２Ｂと大径となる開口２Ａとの間に環状に形成される隙間を覆う位置から小径の開口の内周部位に亘ってシール材Ｓを形成する、あるいは、ワッシャ６の挟圧面６Ｐに対してシール材Ｓを形成する等、シール材Ｓを１工程で塗布した後に、ナット７の締付けを行うことにより、２枚の壁体２、２同士の隙間、及び、これらの壁体２、２と筒状部材５との間にシール材Ｓを加圧封入してシール性の高い状態で配管継手Ｊを壁体２、２に固定できるものとなる。
【００４９】
特に、この第３の実施の形態の変形例として、図１４に示すように、配管継手Ｊを外周にネジ部５Ａを形成した樹脂製の筒状部材５と、このネジ部５Ａに螺合する樹脂製のナット７とを構成することも可能である（前記第３の実施の形態と同じ機能を有するものには、第３の実施の形態と共通の番号、符号を付している）。つまり、筒状部材５の軸芯Ｘに対して傾斜する姿勢の仮想平面上に挟圧面５Ｐが位置するようフランジ部５Ｂを形成すると共に、この仮想平面と直交する姿勢の軸芯Ｙを軸芯とするネジ部５Ａを筒状部材５に形成して第１の実施の形態のワッシャ部材６を用いないで済むものにしている。
【００５０】
この第３の実施の形態では、消毒槽Ｑの壁体２の開口２Ａを、浄化槽の本体Ａの壁体の開口２Ａより大径に形成すると共に、本体Ａの壁体２の開口２Ａの開口縁に沿って前記大径の開口２Ａに嵌り込む環状のリブ２Ｂを突設する形態で実施することも可能である。
【００５１】
〔第４の実施の形態〕
この第４の実施の形態では前記第１の実施の形態と同じ機能を有するものには、第１の実施の形態と共通の番号、符号を付している。
【００５２】
この第４の実施の形態では、図１５に示すように、第３の実施の形態と同様に壁体２に形成された大径の開口２Ａに嵌り込むリブ２Ｂを、小径の開口２Ａが形成された壁体２に形成するものであるが、このリブ２Ｂの突出量を壁体２の厚みより小さく設定し、この厚みの設定により形成される環状の凹部に入り込む嵌合部６Ｄをワッシャ部材６に形成してある点で第３の実施の形態と異なるものである。又、この第４の実施形態において、筒状部材５を壁体２に対して回転不能に支持するための構造として、第１の実施の形態の変形例に記載した構造を採用しても良い。
【００５３】
この構成により、壁体２の開口２Ａに筒状部材５を挿入した後、リブ２Ｂと大径となる開口２Ａとの間に環状に形成される隙間を覆う位置から小径の開口の内周部位に亘ってシール材Ｓを形成する、あるいは、ワッシャ６の挟圧面（挟圧部に相当）６Ｐに対してシール材Ｓを形成する等、シール材Ｓを１工程で塗布した後に、ナット７の締付けを行うことにより、２枚の壁体２、２同士の隙間、及び、これらの壁体２、２と筒状部材５との間にシール材Ｓを加圧封入してシール性の高い状態で、しかも、嵌合部６Ｄを壁体２に形成される環状の凹部に係入させて安定的に配管継手Ｊを壁体２、２に固定できるものとなる。
【００５４】
特に、この第４の実施の形態の変形例として、図１６に示すように、配管継手Ｊを外周にネジ部５Ａを形成した樹脂製の筒状部材５と、このネジ部５Ａに螺合する樹脂製のナット７とを構成することも可能である（前記第４の実施の形態と同じ機能を有するものには、第４の実施の形態と共通の番号、符号を付している）。つまり、筒状部材５の軸芯Ｘに対して傾斜する姿勢の仮想平面上に挟圧面５Ｐが位置するようフランジ部５Ｂを形成すると共に、この仮想平面と直交する姿勢の軸芯Ｙを軸芯とするネジ部５Ａを筒状部材５に形成して第１の実施の形態のワッシャ部材６を用いないで済むものにしている。
【００５５】
この第４の実施の形態では、消毒槽Ｑの壁体２の開口２Ａを、浄化槽の本体Ａの壁体の開口２Ａより大径に形成すると共に、本体Ａの壁体２の開口２Ａの開口縁に沿って前記大径の開口２Ａに嵌り込む環状のリブ２Ｂを突設する形態で実施することも可能である。
【００５６】
〔別実施の形態〕
本発明は上記実施の形態以外に、例えば、壁体が２枚以上重ね合わせで配置される部位に配管継手を支持する際に固定することや、浄化槽内部の仕切壁に配管継手を固定する際に使用することも可能である。
【図面の簡単な説明】
【図１】第１の実施の形態の浄化槽の縦断側面図
【図２】第１の実施の形態の浄化槽の横断平面図
【図３】第１の実施の形態の配管継手の分解斜視図
【図４】第１の実施の形態の配管継手の分解状態の断面図
【図５】第１の実施の形態の壁体に支持した状態の配管継手の断面図
【図６】第１の実施の形態の壁体の側にシール材を形成した状態を示す断面図
【図７】第１の実施の形態のフランジ部の側にシール材を形成した状態を示す断面図
【図８】第１の実施の形態の壁体に支持した状態の配管継手の断面図
【図９】第１の実施の形態の変形例の配管継手の分解斜視図
【図１０】第１の実施の形態の変形例の配管継手の分解状態の断面図
【図１１】第２の実施の形態の配管継手の分解状態の断面図
【図１２】第２の実施の形態の変形例の配管継手の分解状態の断面図
【図１３】第３の実施の形態の配管継手の分解状態の断面図
【図１４】第３の実施の形態の変形例の配管継手の分解状態の断面図
【図１５】第４の実施の形態の配管継手の分解状態の断面図
【図１６】第４の実施の形態の変形例の配管継手の分解状態の断面図
【符号の説明】
２壁体
２Ａ開口
２Ｂリブ
５筒状部材
５Ａネジ部
５Ｂフランジ部
５Ｄ嵌合部
６ワッシャ部材
６Ｄ嵌合部
７ナット
Ｄ凹部
Ｓシール材[0001]
BACKGROUND OF THE INVENTION
The present invention comprises a tubular member having a threaded portion formed on the outer periphery, a flange portion formed integrally with the tubular member, and a nut screwed into the threaded portion to constitute a pipe joint, and a wall of a septic tank A septic tank to which a pipe joint is attached in such a manner that the tubular member is inserted into the opening formed in the pipe, and the nut of the septic tank is sandwiched by the clamping force from the flange part and the nut by screwing and tightening the nut to the screw part. The present invention relates to a pipe joint fixing structure.
[0002]
[Prior art]
Conventionally, as a technique related to a pipe joint of a septic tank configured as described above, a pipe fixture (a pipe of the present invention) including a screw cylinder with a flange and a nut screwed into a male screw cylinder of the screw cylinder. Joint). In this conventional technique, a screw cylinder is inserted into a through-hole formed with a partition wall (the wall of the present invention), a sealing material is sandwiched between the flange portion of the screw cylinder and the partition wall, and a nut is screwed into the screw cylinder. By tightening them, the pipe fixing tool is supported by the partition wall, and an O-ring is disposed between the pipe inserted into the screw cylinder and the screw cylinder (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-11-104661 (paragraph numbers [0022] to [0027], FIG. 2)
[0004]
[Problems to be solved by the invention]
Considering piping that communicates with the internal space of the septic tank, for example, piping that supplies sewage into the septic tank and piping that discharges treated water after purification treatment are fixed to the outer wall of the septic tank. Then, between the pipe and the outer wall of the septic tank, a seal material is disposed in the same manner as that described in Patent Document 1, so that water from the outside of the pipe enters or leaks out of the pipe. Configured to prevent.
[0005]
Also, in the case of fixing the pipe to the outer wall of the septic tank via a pipe joint, considering the sealing performance between the pipe and the outer wall of the septic tank, this sealing performance is not only related to the structure of the pipe joint but also to the performance of the sealing material. It depends on you. Therefore, it is desired to use a sealing material that prevents water from entering the outside of the pipe or leaks out of the pipe in an optimal form.
[0006]
Considering a septic tank equipped with a sterilization tank at the site for draining treated water after purification treatment, in the conventional septic tank, the sterilization tank is formed as a tank having an independent structure opened upward, and is in contact with the inner surface of the outer wall of the septic tank. Placed in position. Therefore, as a structure for supporting the piping for discharging the treated water after purification treatment, openings are formed in the contact portions between the wall of the disinfection tank and the outer wall of the purification tank, and pipe joints are inserted through these openings. In this state, a pipe joint is supported and fixed by tightening a flange portion and a nut.
[0007]
However, in the case where an opening is formed in a portion where two wall bodies are overlapped, water leakage or water intrusion is likely to occur between the respective wall bodies. It was necessary to interpose a sealing material in a portion surrounding the opening between the wall bodies. Also, when supporting a pipe joint, it is necessary to interpose a seal material between the flange part of the pipe joint and the wall body, or between the nut and the wall body. It took time to apply the coating. That is, when considering the operation of injecting and applying the sealing material, between the flange portion of the pipe joint and the wall body, and between the nut and the wall body, the sealing material is provided in one of them. However, it is indispensable to interpose a sealing material between the walls, and there is room for improvement in terms of difficulty in work. The sealing material used in the septic tank may be used in the form of affixing packing, but it is often used in the form of a paste in which the main agent and curing agent are mixed, such as an epoxy resin. Many work forms are used for filling or coating the required position using the.
[0008]
Further, for example, considering the sealing performance between the pipe joint and the wall body, the paste material that uses the paste-like sealing material leaves a necessary amount of the sealing material even after the pipe joint is provided on the wall body. Although it is necessary, if it is fixed by simply applying a clamping force by tightening a nut, the sealing material may flow out to the outside of the flange portion or the like, which may lead to inconvenience of lowering the sealing performance.
[0009]
An object of the present invention is to rationally obtain a pipe joint support structure for a septic tank that can reliably support a pipe joint even when the pipe joint is supported at a portion where a plurality of wall bodies are arranged in an overlapping state.
[0010]
[Means for Solving the Problems]
The features, functions and effects of the pipe joint fixing structure for a septic tank according to claim 1 of the present invention are as follows.
〔Characteristic〕
A pipe member is provided with a cylindrical member having a screw part formed on the outer periphery, a flange part integrally formed with the cylindrical member, and a nut screwed to the screw part, and formed on the wall of the septic tank. A pipe joint fixing structure for a septic tank in which the pipe joint is attached in such a manner that the wall of the septic tank is sandwiched by the clamping force from the flange part and the nut by inserting the cylindrical member into the opening and screwing the nut into the screw part and tightening The wall of the septic tank is formed of a plurality of overlapping walls, and a difference is set in the opening diameters of the openings formed in adjacent walls among the openings formed in the respective walls, and In the area where the periphery of the opening can be sealed From the large diameter opening side In the state in which the sealing material is formed, the plurality of wall bodies are fastened and fixed by a clamping pressure from the flange portion and the nut.
[0011]
[Action / Effect]
According to the above feature, openings having different diameters are formed with respect to the overlapping wall bodies. Therefore, by forming a sealing material from the large-diameter opening side, the boundary between the peripheral portion of the large-diameter opening and the adjacent wall body is formed. Thus, partial sealing is realized, and the process for forming the sealing material can be reduced in this way. Further, by tightening the nut after forming the seal material, the pipe joint can be fixed while maintaining the state where the portion where the seal material is formed by the clamping force from the flange portion and the nut is kept in close contact. As a result, a pipe joint fixing structure in which the process of forming the sealing material is reduced and the working efficiency is improved is obtained.
[0012]
The characteristics, operation and effect of the pipe joint fixing structure for the septic tank according to claim 2 of the present invention are as follows.
〔Characteristic〕
2. The pipe joint fixing structure for a septic tank according to claim 1, wherein the openings formed in the plurality of wall bodies are coaxial so that the diameter increases in the overlapping direction of the wall bodies or the diameter decreases in the overlapping direction of the wall bodies. Placed on the core, A fitting portion that fits into at least one of the plurality of openings along with the attachment of the pipe joint to the wall body, The flange portion, the nut, and a washer member fitted to the screw portion Inside At least one In the clamping part having a surface facing the wall side It is in the point made.
[0013]
[Action / Effect]
According to the above characteristics, by forming the sealing material from the large-diameter opening side, the sealing of the boundary portion between the peripheral portion of the large-diameter opening and the adjacent wall body is realized and the sealing material is formed in this way. After Clamping part The pipe joint can be supported in a positioning state with respect to the wall body by arranging the fitting part in a state of fitting into the opening and tightening the nut. As a result, setting the diameter of the opening formed in the wall, and Clamping part By setting the shape, the pipe joint can be supported with high sealing performance and high positional accuracy.
[0014]
The characteristics, operation and effect of the pipe joint fixing structure of the septic tank according to claim 3 of the present invention are as follows.
〔Characteristic〕
In the piping joint fixing structure of the septic tank according to claim 2, Clamping part But, It is formed in an annular shape around the axial center of the threaded portion, and is The circumferential side is From the inner circumference Close to the wall Touch Molded into a shape Equipped with In the point.
[0015]
[Action / Effect]
According to the above features An annular radial direction of the pressing portion formed in an annular shape around the axis of the screw portion. The outer periphery is From the inner circumference On the wall Since it is molded into a close shape, The glue material In the annular radial direction of the clamping part It is stored in a state where it is contained on the inner circumference side. As a result, a sealing material was reliably filled between the pipe joint and the wall body, and high sealing performance was realized.
[0016]
The characteristics, operation and effect of the pipe joint fixing structure for the septic tank according to claim 4 of the present invention are as follows.
〔Characteristic〕
In the piping joint fixing structure of the septic tank according to claim 2 or 3, At least one of the flange portion, the nut portion, and a washer member fitted to the screw portion is provided with a pressing portion provided with a surface facing the wall side. Seal material Reservable recess The point is that a part is formed.
[0017]
[Action / Effect]
According to the above characteristics, even when the pipe joint is supported on the wall by tightening the nut, Clamping part Thus, the sealing material is stored in a state of being confined in the space of the concave portion formed in (1). As a result, even after tightening the nut Clamping part The sealability in can be maintained over a long period of time.
[0018]
The features, functions and effects of the pipe joint fixing structure for a septic tank according to claim 5 of the present invention are as follows.
〔Characteristic〕
2. The pipe joint fixing structure for a septic tank according to claim 1, wherein the openings formed in the plurality of wall bodies are coaxial so that the diameter increases in the overlapping direction of the wall bodies or the diameter decreases in the overlapping direction of the wall bodies. A small-diameter opening is formed among the wall bodies arranged on the core and adjacent to each other. The wall body has a large-diameter opening at the opening edge of the wall body. A ring-shaped rib that fits into the opening is formed integrally with the wall.
[0019]
[Action / Effect]
According to the above feature, not only can the position displacement of each wall body be prevented by disposing the ring-shaped rib formed on the other wall into one opening with respect to the other opening, but also the large diameter. By forming a seal between the opening on the side and the rib, a seal between the respective wall bodies can also be realized. As a result, high sealing performance was realized while maintaining the relative positional relationship between the walls with high accuracy.
[0020]
The features, functions and effects of the pipe joint fixing structure for a septic tank according to claim 6 of the present invention are as follows.
〔Characteristic〕
6. The pipe joint fixing structure for a septic tank according to claim 5, wherein the protruding amount of the rib is set to a value smaller than the thickness of the adjacent wall body, and the rib is fitted from the opposite side to the opening into which the rib is fitted. Fitting portion But, The flange portion, the nut, and a washer member fitted to the screw portion Inside At least one In the clamping part having a surface facing the wall side It is in the point made.
[0021]
[Action / Effect]
According to the said characteristic, a pipe joint can be supported in a positioning state with respect to a wall body by inserting a fitting part in opening. As a result, the pipe joint can be supported and fixed with high positional accuracy.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
As shown in FIGS. 1 and 2, a raw water inlet In is formed at one end of the upper position of the case-shaped main body A, and a discharge outlet Ex is formed at the other end of the main body A. The first partition wall B1, the second partition wall B2, and the third partition wall B3 are disposed in this order from the raw water inlet In side to the outlet port Ex side, and the partition wall is disposed inside the main body A. A septic tank is formed by forming an anaerobic treatment tank N, an aerobic treatment tank E, a treated water tank T, and a disinfection tank Q in a space defined by B (the upper concept of the first, second, and third partition walls). Has been.
[0023]
This septic tank is installed under the ground, and in order to perform inspections and maintenance in a state where it is installed under the ground, an upper lid of the main body A is opened upward and an openable lid is provided. A plurality of manhole portions H are formed.
[0024]
The main body A and the partition wall B are each made of FRP using SMC (sheet molding compound) as a molding material. The SMC is formed by impregnating a glass fiber as a reinforcing material with an unsaturated polyester resin, a filler, or other additives to form a sheet, and this SMC is formed into a convex mold and a concave mold. Then, the main body A and the partition wall B are formed by a pressurizing and heat treatment process using a press machine.
[0025]
In this septic tank, the raw water pipe 1 is supported by the pipe joint K fixed to the raw water inlet In, and the discharge pipe 1 is supported by the pipe joint J fixed to the outlet Ex. The structure in which the pipe joint J is fixed to the outlet port Ex corresponds to the pipe joint fixing structure of the present invention. Moreover, this pipe joint J is not only applied to the septic tank of the structure shown in FIG.1 and FIG.2, but is applicable also to the septic tank of a different structure.
[0026]
That is, as shown in FIGS. 3 to 8, the wall body 2 constituting the sterilization tank Q and the wall body 2 constituting the main body A of the septic tank are overlapped in an inclined posture at the portion of the discharge port Ex. The openings 2A and 2A are formed on the coaxial core with a pair of engaging pieces 2T projecting on the inner periphery of each wall body 2 on the coaxial core. The pipe joint J is fixed. Among these openings 2A and 2A, the diameter of the one disposed inside the septic tank (the opening 2A formed in the wall body 2 of the disinfection tank Q) is set larger than the diameter of the opening of the outer wall body 2. . Note that the engagement piece 2T formed on the inner periphery of the opening 2A may be formed only on one of the openings 2A.
[0027]
The pipe joint J has a resin cylindrical member 5 in which a threaded portion 5A is formed on the outer periphery and a flange portion 5B is integrally formed, a resin washer member 6 that is externally fitted to the cylindrical member 5, A resin nut 7 that is screwed into the screw portion 5A is provided. The pipe joint J is configured to support the pipe 1 in a horizontal posture and to exhibit a good seal state in a state where the pipe joint J is fixed to the walls 2 and 2. It will be described in detail.
[0028]
That is, the threaded portion 5A of the tubular member 5 is formed on the outer periphery of the tubular member 5 around the axis X, and the outer diameter thereof can be inserted into the opening 2A on the small diameter side with almost no gap. The dimensions are set. Further, the flange portion 5B of the cylindrical member 3 is formed in a posture in which the entire flange portion 5B is inclined with respect to the axis X of the cylindrical member 5 so as to follow the inclined posture of the wall bodies 2A, 2A. The clamping surface facing the wall 2 in the flange portion 5B (Equivalent to pinching part) In 5P, a fitting portion 5D that fits into the opening 2A on the large-diameter side is formed to protrude. Further, a stopper portion 5C for determining the inner end position of the pipe 1 is integrally formed at the inner end position of the inner surface of the cylindrical member 5, and a pair of groove portions 5G are formed in the screw portion 5A along the axis X. It is formed.
[0029]
Of the clamping surface 5P of the flange portion 5B, the fitting portion 5D and the annular portion 5E located on the outer periphery of the fitting portion 5D are arranged on the side where the outer peripheral side is close to the wall body side and the inner peripheral side is separated from the wall body. It is formed in the shape of the inner surface of the horn that is displaced by Further, as shown in FIG. 8, in a state where the outer peripheral portion of the annular portion 5E is in contact with the wall 2 of the sterilization tank Q, the protruding end of the fitting portion 5D is fitted so as to contact the wall 2 of the main body A of the septic tank. The protrusion amount of the part 5D is set.
[0030]
The washer member 6 is integrally formed with a pair of engaging pieces 6T engaged with the groove 5G so as to be supported in a non-rotatable state while being fitted to the tubular member 5. The pinching surface 6P disposed on the side facing the body 2 is formed in an inclined posture with respect to the axis X so as to be along the wall body 2, and on the side located on the opposite side of the pinching surface 6P. The pressed surface 6V with which the nut 7 comes into contact is formed in a posture orthogonal to the axis X. The nut 7 is integrally formed with a thread surface (female thread) 7A that is screwed into the threaded portion 5A of the cylindrical member 5 and a plurality of operated pieces 7B that receive a rotational operation force.
[0031]
Since the pipe joint J is configured in this manner, when the pipe joint J is fixed to the wall bodies 2 and 2 of the septic tank, first, as shown in FIG. After the sealing material S is injected and formed on the inner surface side of the opening 2A, the wall body 2 of the disinfection tank Q is overlaid. Then, with the engaging piece 2T of the opening 2A engaged with the groove 5G, the cylindrical member 5 is inserted into the opening 2A, and then the cylindrical member 5 is inserted into the opening 2A. The washer member 6 is fitted in the groove portion 5G of the screw portion 5A in a state where the engaging piece 6T is engaged, and the screw portion 7A of the nut 7 is screwed into the screw portion 5A of the cylindrical member 5. Thus, in the state where the cylindrical member 5 is inserted into the opening 2A, the engaging piece 2T of the opening 2A and the groove portion 5G of the cylindrical member 5 are engaged with each other. On the other hand, it is supported in a non-rotatable state, and the engaging piece 6T of the washer member 6 is engaged with the groove portion 5G of the cylindrical member 5, so that the washer member 6 cannot rotate with respect to the cylindrical member 5. Supported.
[0032]
Further, the portion where the sealing material S is formed may be on the side of the clamping surface 5P in the flange portion of the cylindrical member 5 as shown in FIG. It may be a part of the opening 2A of two or two. In addition, in order to improve the sealing performance between the two wall bodies 2, 2 of the opening edges of the wall body 2 (Q) in which the large-diameter opening 2 </ b> A is formed in FIG. It is also possible to create a space for storing the sealing material S in a state where the two wall bodies 2 and 2 are overlapped by chamfering on the side (right side in the figure) or by forming a recess. is there.
[0033]
In addition, the sealing material S, such as an epoxy resin type or a polyurethane resin type, is used which is cured by mixing the main agent and the curing agent. used.
[0034]
After that, by performing a tightening operation by rotating the nut 7, as shown in FIG. 8, the sealing material S is filled in the portions of the openings 2A and 2A of the respective wall bodies 2 and 2 at the same time as shown in FIG. The sealing material S is filled on the fitting portion 5D and the annular portion 5E side, and further, the sealing material S is provided on the washer member 6 side from the gap between the small-diameter opening 2A and the screw portion 5A by the action of this clamping pressure. Flows out and is pressure-filled into the inner peripheral portion of the screw portion 5A and the wall body 2 and the two openings 2A and 2A. Thereby, even if a fine space exists between the walls 2 and 2 and the cylindrical member 5, the sealing material S is solidified into the space to be solidified and the sealed state is maintained. In this supported state, a seal material S is formed in a space (a space between the fitting surface formed on the inner surface of the horn and the wall body) formed on the inner peripheral side of the fitting portion 5D and the annular portion 5E. Is stored in a state in which it is contained, and a good sealing state is maintained without the sealing material S being insufficient.
[0035]
Thereafter, an adhesive is applied to the inner surface of the cylindrical member 5 or the outer surface of the pipe 1 or to each of them, and the pipe is inserted to a position where it comes into contact with the stopper portion 5C with respect to the inner surface of the cylindrical member 5. As a result, the pipe 1 is firmly supported with respect to the pipe joint J.
[0036]
As described above, in the present invention, the step of forming the sealing material S can be completed only by setting a difference in the opening diameters of the openings 2A and 2A formed in the wall bodies 2 and 2 arranged in an overlapping manner. After the seal material S is formed, the pipe joint J is set against the walls 2 and 2 by the clamping force from the flange portion 5B and the nut 7 simply by setting the pipe joint J and tightening the nut 7. This ensures a good seal while simultaneously supporting it. In particular, since the fitting portion 5D is formed in the flange portion 5B, the relative positional relationship between the pipe joint J and the wall body 2 can be accurately maintained at an appropriate position, and the flange portion 5B can be sandwiched. Since the pressure surface 5P is formed on the inner surface of the horn, the sealing material S is reliably pressurized and sealed while the sealing material S is stored in the gap between the piping joint J and the wall body 2, and this piping joint is sealed. In the part of J, not only water leakage from the inside of the septic tank to the outside space of the septic tank is prevented, but also water penetration from the outside of the septic tank to the inside of the septic tank is prevented.
[0037]
In addition, the present invention provides, for example, a sealing material S in the form of a ring of a plastic haze that can be freely deformed and flowed by pressure, such as a putty-like material, or a resin (elastomer etc.) that can be flexibly deformed. It is possible to set it in a form that is molded in advance and pasted to the tubular member 5 or the like, and supports the pipe with the pipe joint J of the present invention against the partition wall B inside the septic tank. It can also be used to
[0038]
In particular, as a modification of the first embodiment, as shown in FIG. 9 and FIG. 10, a resin-made tubular member 5 in which a threaded portion 5A is formed on the outer periphery of a pipe joint J, and the threaded portion 5A. It is also possible to configure with a nut 7 made of resin to be screwed (the same number and code as those in the first embodiment are given to those having the same functions as those in the first embodiment. ) That is, the pressing surface on the virtual plane in a posture inclined with respect to the axis X of the cylindrical member 5 (Equivalent to pinching part) The washer member according to the first embodiment is formed by forming the flange portion 5B so that 5P is positioned and forming the screw portion 5A having the axis Y in the posture orthogonal to the virtual plane as the axis on the cylindrical member 5. No need to use 6.
[0039]
Moreover, in this modification, a pair of fitting parts 5G are formed in the outer peripheral part of the fitting part 5D of the cylindrical member 5, and the engagement piece 2T fitted to this fitting part 5G is opened in the inner wall surface 2. It is formed on the inner periphery of 2A and is configured to determine the attitude of the cylindrical member 5 with respect to the wall bodies 2 and 2. In this way, the fitting portion 5G is formed with a space in which water flows in the direction of the axis X compared to the groove portion 5G formed on the outer surface of the cylindrical member 5 as in the first embodiment. As a result, the sealing performance is further improved.
[0040]
And, when fixing the pipe joint J to the openings 2A, 2A having different diameters formed on the wall bodies 2, 2 arranged in an overlapped state, after injecting and forming the sealing material S as described above, After arranging each so that the fitting part 5G and the engagement piece 2T are in a fitted state, the screw part 7A of the nut 7 is screwed into the screw part 5A of the cylindrical member 5 and tightened by rotation. The pipe joint J is firmly supported by the wall bodies 2 and 2. In particular, in this configuration, the wall bodies 2 and 2 can be directly tightened and fixed by the pinching surface 7P of the nut 7 and the pinching surface 5P of the flange portion 5B without using the washer member. It can be omitted and implemented with a small number of parts. In this modification, the protruding amount of the fitting portion 5D formed on the flange portion 5B is made to coincide with the thickness of the wall 2 of the disinfecting layer Q.
[0041]
Further, in this modification, when the nut T is tightened by forming a plurality of recesses D in the fitting portion 5D and the annular portion 5E of the flange portion 5B as shown in FIG. The sealing material S is stored in the recess D so that the sealing performance can be improved.
[0042]
[Second Embodiment]
In the second embodiment, components having the same functions as those in the first embodiment are given the same numbers and symbols as those in the first embodiment.
[0043]
In the second embodiment, as shown in FIG. 11, the diameter of the opening 2A formed in the wall 2 of the main body A of the septic tank is set larger than the opening 2A formed in the wall 2 of the disinfection tank Q. The clamping surface of the washer member 6 (Equivalent to pinching part) A fitting portion 6D that fits into an opening on the large diameter side with respect to 6P is formed to project, and an annular portion 6E is formed at the outer peripheral position of this fitting portion 6D. Then, after applying the sealing material S in one step, such as forming the sealing material S on the wall surface 2 where the small-diameter opening 2A is formed, or forming the sealing material S on the clamping surface 6P side of the washer member 6 The pipe joint J can be fixed to the wall body 2 by the tightening operation of the nut 7. In the second embodiment, the structure described in the modification of the first embodiment may be adopted as a structure for supporting the cylindrical member 5 so as not to rotate with respect to the wall body 2. .
[0044]
In particular, as a modification of the second embodiment, as shown in FIG. 12, a pipe joint J is screwed into the resin tubular member 5 having a screw portion 5A formed on the outer periphery thereof and the screw portion 5A. It is also possible to constitute the resin nut 7 (the same numbers and symbols as those of the second embodiment are given to those having the same functions as those of the second embodiment). That is, the flange portion 5B is formed so that the clamping surface 5P is positioned on a virtual plane in a posture in which the flange portion 5B of the cylindrical member 5 is inclined with respect to the axis X, and the axis core in a posture orthogonal to the virtual plane is formed. A threaded portion 5A having an axis Y is formed in the cylindrical member 5 so that the washer member 6 of the second embodiment can be dispensed with.
[0045]
In this variation, the nut (Equivalent to pinching part) 7 is made to match the thickness of the wall 2 of the disinfecting layer Q, and a plurality of recesses D are formed with respect to the fitting portion 7D and the annular portion 7E of the nut 7 as shown in FIG. Thus, when the nut T is tightened, the sealing material S is stored in the recess D so that the sealing performance can be improved.
[0046]
[Third Embodiment]
In the third embodiment, components having the same functions as those in the first embodiment are denoted by the same reference numerals and symbols as those in the first embodiment.
[0047]
In the third embodiment, as shown in FIG. 13, the opening 2A of the wall body of the main body A of the septic tank is formed to have a larger diameter than the opening 2A of the wall body 2 of the sterilization tank Q. An annular rib 2B that fits into the large-diameter opening 2A is provided along the opening edge of the opening 2A of the wall 2. By setting the protruding amount of the rib 2B equal to the thickness of the wall 2 in which the large-diameter opening 2A is formed, the rib 2B can be arranged in a state of fitting into the large-diameter opening 2A. In this fitted state, the rib 2B And the surface of the wall 2 are made equal. In the third embodiment, the structure described in the modification of the first embodiment may be adopted as a structure for supporting the cylindrical member 5 so as not to rotate with respect to the wall 2. .
[0048]
With this configuration, after inserting the cylindrical member 5 into the opening 2A of the wall 2, the inner peripheral portion of the small-diameter opening from the position covering the annular gap formed between the rib 2B and the large-diameter opening 2A. By applying the sealing material S in one step, such as by forming the sealing material S over the entire surface, or by forming the sealing material S on the clamping surface 6P of the washer 6, the nut 7 is tightened. The sealing material S is pressurized and sealed between the wall members 2 and 2 and the wall members 2 and 2 and the tubular member 5 so that the pipe joint J is walled in a highly sealable state. It can be fixed to 2 and 2.
[0049]
In particular, as a modification of the third embodiment, as shown in FIG. 14, a pipe joint J is screwed into a resin-made tubular member 5 having a screw portion 5A formed on the outer periphery thereof, and the screw portion 5A. It is also possible to configure a resin nut 7. (Those having the same functions as those of the third embodiment are given the same numbers and symbols as those of the third embodiment). That is, the flange portion 5B is formed so that the pinching surface 5P is positioned on a virtual plane that is inclined with respect to the axis X of the cylindrical member 5, and the axis Y that is orthogonal to the virtual plane is used as the axis. 5A is formed in the cylindrical member 5 so that the washer member 6 of the first embodiment is not used.
[0050]
In the third embodiment, the opening 2A of the wall body 2 of the sterilization tank Q is formed to have a larger diameter than the opening 2A of the wall body of the septic tank main body A, and the opening 2A of the wall body 2 of the main body A is opened. It is also possible to implement in a form in which an annular rib 2B that fits into the large-diameter opening 2A is provided along the edge.
[0051]
[Fourth Embodiment]
In the fourth embodiment, components having the same functions as those in the first embodiment are given the same reference numerals and symbols as those in the first embodiment.
[0052]
In the fourth embodiment, as shown in FIG. 15, a small-diameter opening 2A is formed as a rib 2B that fits into a large-diameter opening 2A formed in the wall 2 as in the third embodiment. The rib 2B is formed so that the protruding amount of the rib 2B is smaller than the thickness of the wall 2, and the fitting portion 6D that enters the annular recess formed by setting the thickness is a washer member. 6 is different from the third embodiment in that it is formed in FIG. In the fourth embodiment, the structure described in the modification of the first embodiment may be adopted as a structure for supporting the cylindrical member 5 so as not to rotate with respect to the wall body 2. .
[0053]
With this configuration, after inserting the cylindrical member 5 into the opening 2A of the wall 2, the inner peripheral portion of the small-diameter opening from the position covering the annular gap formed between the rib 2B and the large-diameter opening 2A. Forming the sealing material S over the surface, or the pressure-clamping surface of the washer 6 (Equivalent to pinching part) After applying the sealing material S in one step, such as forming the sealing material S on 6P, the nut 7 is tightened, whereby the two wall bodies 2, the gap between the two walls 2, and these wall bodies The sealing material S is pressurized and sealed between the tubular members 5 and 2 and the sealing member S is highly sealed, and the fitting portion 6D is engaged with the annular recess formed in the wall body 2. The pipe joint J can be stably fixed to the wall bodies 2 and 2.
[0054]
In particular, as a modification of the fourth embodiment, as shown in FIG. 16, the pipe joint J is screwed into the resin tubular member 5 having a screw portion 5A formed on the outer periphery thereof and the screw portion 5A. It is also possible to configure a resin nut 7. (Those having the same functions as those of the fourth embodiment are given the same numbers and symbols as those of the fourth embodiment). That is, the flange portion 5B is formed so that the pinching surface 5P is positioned on a virtual plane that is inclined with respect to the axis X of the cylindrical member 5, and the axis Y that is orthogonal to the virtual plane is used as the axis. 5A is formed in the cylindrical member 5 so that the washer member 6 of the first embodiment is not used.
[0055]
In the fourth embodiment, the opening 2A of the wall body 2 of the sterilization tank Q is formed to have a larger diameter than the opening 2A of the wall body of the septic tank main body A, and the opening 2A of the wall body 2 of the main body A is opened. It is also possible to implement in a form in which an annular rib 2B that fits into the large-diameter opening 2A is provided along the edge.
[0056]
[Another embodiment]
In addition to the above-described embodiment, the present invention is fixed when, for example, supporting a pipe joint on a portion where two or more wall bodies are arranged in an overlapping manner, or when fixing a pipe joint to a partition wall inside the septic tank. It can also be used.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of a septic tank according to a first embodiment.
FIG. 2 is a cross-sectional plan view of the septic tank according to the first embodiment.
FIG. 3 is an exploded perspective view of the pipe joint according to the first embodiment.
FIG. 4 is a sectional view of an exploded state of the pipe joint according to the first embodiment.
FIG. 5 is a cross-sectional view of a pipe joint in a state of being supported on a wall body according to the first embodiment.
FIG. 6 is a cross-sectional view showing a state in which a sealing material is formed on the side of the wall according to the first embodiment.
FIG. 7 is a cross-sectional view showing a state in which a sealing material is formed on the flange portion side according to the first embodiment.
FIG. 8 is a cross-sectional view of the pipe joint in a state of being supported by the wall body according to the first embodiment.
FIG. 9 is an exploded perspective view of a pipe joint according to a modification of the first embodiment.
FIG. 10 is a cross-sectional view of an exploded state of a pipe joint according to a modification of the first embodiment.
FIG. 11 is a sectional view of an exploded state of the pipe joint of the second embodiment.
FIG. 12 is a sectional view of an exploded state of a pipe joint according to a modification of the second embodiment.
FIG. 13 is a sectional view of an exploded state of the pipe joint according to the third embodiment.
FIG. 14 is a sectional view of an exploded state of a pipe joint according to a modification of the third embodiment.
FIG. 15 is a sectional view of an exploded state of the pipe joint of the fourth embodiment.
FIG. 16 is a cross-sectional view of an exploded state of a pipe joint according to a modification of the fourth embodiment;
[Explanation of symbols]
2 walls
2A opening
2B rib
5 Tubular member
5A Screw part
5B Flange
5D fitting part
6 Washer members
6D fitting part
7 Nut
D recess
S sealing material

Claims

A pipe member is provided with a cylindrical member having a screw part formed on the outer periphery, a flange part integrally formed with the cylindrical member, and a nut screwed to the screw part, and formed on the wall of the septic tank. A pipe joint fixing structure for a septic tank in which the pipe joint is attached in such a manner that the wall of the septic tank is sandwiched between the flange part and the nut by inserting the cylindrical member into the opening and screwing the nut into the screw part and tightening the nut. Because
The wall of the septic tank is formed of a plurality of overlapping walls, and a difference is set in the opening diameters of the openings formed in the adjacent walls among the openings formed in the respective walls, and the peripheral portions of the respective openings A pipe joint fixing structure for a septic tank in which the plurality of wall bodies are fastened and fixed by a clamping force from the flange portion and the nut in a state where a sealing material is formed from the side of the large-diameter opening at a site where the seal can be sealed.

The openings formed in the plurality of wall bodies are arranged on the coaxial core so that the diameter increases in the overlapping direction of the wall bodies or the diameter decreases in the overlapping direction of the wall bodies, and piping to the wall bodies fitting portion fits in at least one of said plurality of openings with the mounting of the joint, and the flange portion, said nut, said at least one of a washer member which is fitted on the threaded portion septic tank piping joint fixing structure according to claim 1 are form form the pressing portions having a surface facing the wall side.

Said pressing portions, together with the is formed annularly axis around the threaded portion, the outer peripheral side at the annular radial direction, the molded part to the wall from the inner circumferential side near Sessu that shape septic tank piping joint structure for fixing to have claim 2 comprising.

Said flange portion, said nut portion, the pressing portions having a surface facing at least in one said wall side of the washer member to be fitted on the threaded portion, capable of storing previous SL sealant septic tank piping joint structure for fixing according to claim 2 or 3, wherein a is formed a concave portion.

The openings formed in the plurality of wall bodies are arranged on the coaxial core so that the diameter increases in the overlapping direction of the wall bodies or the diameter decreases in the overlapping direction of the wall bodies, and the walls adjacent to each other among the body, the opening edge of the wall small-diameter opening is formed, according to claim 1, wherein the annular rib fits into the opening of the wall in which the opening of larger diameter are formed are then one body formed Piping joint fixing structure of septic tank.

The protruding amount of the rib is set to a value smaller than the thickness of the adjacent wall body, and the fitting portion fitted from the opposite side of the rib with respect to the opening into which the rib is fitted is the flange portion, the nut, septic tank piping joint fixing structure according to claim 5, wherein are form form the pressing portions having a surface facing the wall side of at least one of a washer member which is fitted on the threaded portion.