JP2004216335A - Piping joint fixing structure of septic tank - Google Patents

Piping joint fixing structure of septic tank Download PDF

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Publication number
JP2004216335A
JP2004216335A JP2003009675A JP2003009675A JP2004216335A JP 2004216335 A JP2004216335 A JP 2004216335A JP 2003009675 A JP2003009675 A JP 2003009675A JP 2003009675 A JP2003009675 A JP 2003009675A JP 2004216335 A JP2004216335 A JP 2004216335A
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Prior art keywords
wall
pipe joint
septic tank
nut
opening
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JP2003009675A
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Japanese (ja)
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JP4303974B2 (en
Inventor
Akio Kita
亮夫 喜多
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Kubota Corp
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Kubota Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To support a piping joint on a region, where a plurality of wall bodies are arranged in an overlapped state, in a good seal state without requiring labor. <P>SOLUTION: Openings having different diameters are formed to adjacent wall bodies 2 and 2, and a cylindrical member 5 is inserted in the opening in such a state that seals S are formed to the region across the openings. The wall bodies 2 and 2 are held by the pressing surface of a flange 5B formed to the cylindrical member 5 and the pressing surface of a washer member 6 externally fitted to the cylindrical member 5 and further held by the pressing force from a nut 7 threaded with the cylindrical member 5 to fix and support the piping joint J. <P>COPYRIGHT: (C)2004,JPO&NCIPI

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、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少なくとも1つの挟圧面に対して、前記複数の開口の少なくとも1つに嵌り込む嵌合部を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面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、挟圧面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、前記挟圧面が、締付け時において、外周側が前記壁体に近接し、内周側が前記壁体から離間する形状に成型してある点にある。
【0015】
〔作用・効果〕
上記特徴によると、挟圧面の外周側が壁体に接触した状態においてシール材は挟圧面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、前記挟圧面に対して前記シール材が入り込む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、挟圧面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面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、小径の開口が形成された側に対して大径側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を前記フランジ部と、ナットと、前記ネジ部に外嵌されるワッシャ部材との少なくとも1つの挟圧面に対して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]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a pipe joint including a tubular member having a threaded portion formed on an outer periphery, a flange portion integrally formed with the tubular member, and a nut screwed into the threaded portion, and a wall of a septic tank. Inserting the tubular member into the opening formed in the purification tank, the nut is screwed into the threaded portion and tightened by tightening pressure from the flange portion and the nut. 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 fixing tool (a pipe of the present invention) comprising a screw cylinder with a flange and a nut screwed into a male screw cylinder portion of the screw cylinder. Joint). In this conventional technique, a screw cylinder is inserted into a through hole formed in a partition wall (the wall body of the present invention), a sealing material is sandwiched between a flange portion of the screw cylinder and the partition wall, and a nut is screwed into the screw cylinder. The pipe fixture is supported on the partition wall by being tightened, and an O-ring is arranged between the pipe and the pipe inserted into the screw pipe (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 the piping communicating with the inner space of the septic tank, for example, a pipe for supplying sewage to the septic tank and a pipe for discharging treated water after the purification treatment are fixed to the outer wall of the septic tank. Then, by arranging a sealing material between the pipe and the outer wall of the septic tank in the same manner as described in Patent Document 1, water from the outside of the pipe enters, and water leaks out of the pipe. Is configured to prevent
[0005]
Also, in the case where the pipe is fixed to the outer wall of the septic tank through a pipe joint, considering the sealing performance between the pipe and the outer wall of the septic tank, this sealing performance is not only the structure of the pipe joint but also the performance of the sealing material. It depends. Therefore, it is desired to use a sealing material that prevents water from entering the outside of the pipe or leaks water outside the pipe in an optimal form.
[0006]
Considering a septic tank provided with a disinfecting tank at the site where the treated water after the purification treatment is discharged, in a conventional septic tank, the disinfecting tank is formed as a tank having an independent structure that is open upward and comes into contact with the inner surface of the outer wall of the septic tank. Is located in the position. Therefore, as a structure for supporting a pipe for discharging the treated water after the purification treatment, openings were formed in the wall of the disinfection tank and a portion in contact with the outer wall of the purification tank, and a pipe joint was inserted through these openings. In such a 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 at a portion where two wall bodies are overlapped, water leakage or water intrusion easily occurs between the respective wall bodies, and when the pipe joint is supported and fixed, It was necessary to interpose a sealing material at a portion surrounding the opening between the wall members. In addition, when supporting the pipe joint, it is necessary to interpose a seal material between the flange portion of the pipe joint and the wall, or between the nut and the wall, so that the work of injecting the seal material or The work of applying is troublesome. In other words, in consideration of the work of injecting and applying the sealing material, one of the sealing material is provided between the flange portion of the pipe joint and the wall and between the nut and the wall. However, it is essential to interpose a sealing material between the wall bodies, and there is room for improvement in terms of work difficulty. The sealing material used in the septic tank is sometimes used in a form in which packing is attached, but in many cases, a paste-like mixture of a base material and a curing agent such as an epoxy resin is used. In many cases, a work mode of filling or applying a required position by using is used.
[0008]
Also, for example, in consideration of the sealing property between the pipe joint and the wall, in the case of using the paste-like sealing material, a necessary amount of the sealing material remains even after the pipe joint is provided on the wall. Although it is necessary, if the nut is simply fixed by applying a clamping force by tightening the nut, the sealing material may flow out to the outside of the flange portion or the like, which may lead to the inconvenience of reducing the sealing performance.
[0009]
An object of the present invention is to obtain a pipe joint supporting structure of 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, operations 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 joint was provided with a cylindrical member having a screw portion formed on the outer periphery, a flange portion integrally formed with the cylindrical member, and a nut screwed into the screw portion, and formed on the wall of the septic tank. The pipe joint fixing structure of the septic tank in which the pipe member is inserted in a form in which the wall of the septic tank is sandwiched by the clamping force from the flange portion and the nut by inserting the tubular member into the opening, screwing the nut into the screw portion and tightening the nut. Wherein the wall of the septic tank is formed of a plurality of overlapping walls, and among the openings formed in each of the walls, a difference is set in an opening diameter of an opening formed in an adjacent wall, and The present invention is characterized in that the plurality of wall bodies are tightened and fixed by a clamping force from the flange portion and the nut in a state where a sealing material is formed at a portion where the peripheral portion of the opening can be sealed.
[0011]
[Action / Effect]
According to the above feature, since openings having different diameters are formed with respect to the overlapping wall bodies, by forming the sealing material from the side of the large diameter opening, the boundary between the periphery of the large diameter opening and the adjacent wall body is formed. This realizes partial sealing, and thus it is possible to reduce the number of steps for forming the sealing material. In addition, by tightening the nut after forming the sealing material, the pipe joint can be fixed while maintaining a state in which the portion where the sealing material is formed is in close contact with the clamping force from the flange portion and the nut. As a result, a pipe joint fixing structure was obtained in which the number of steps for forming the sealing material was reduced and work efficiency was improved.
[0012]
The features, operations and effects of the pipe joint fixing structure for a 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 walls are coaxial such that the diameter increases in the direction in which the walls overlap, or the diameter decreases in the direction in which the walls overlap. 3. A fitting that is disposed on a core and that fits into at least one of the plurality of openings with at least one pressing surface of the flange portion, the nut, and a washer member that is externally fitted to the screw portion. The point is that a joint is formed.
[0013]
[Action / Effect]
According to the above feature, by forming the sealing material from the side of the large-diameter opening, sealing at the boundary between the peripheral portion of the large-diameter opening and the adjacent wall is realized, and the sealing material is formed in this way. After that, the pipe joint can be supported in a state of being positioned with respect to the wall by arranging the fitting portion of the clamping surface in a state of fitting into the opening and tightening the nut. As a result, the setting of the diameter of the opening formed in the wall and the setting of the shape of the squeezing surface can support the pipe joint with high sealing performance and high positional accuracy.
[0014]
The features, operations and effects of the pipe joint fixing structure for a septic tank according to claim 3 of the present invention are as follows.
〔Characteristic〕
3. The pipe joint fixing structure for a septic tank according to claim 2, wherein the clamping surface is formed such that an outer peripheral side is close to the wall body and an inner peripheral side is separated from the wall body at the time of tightening.
[0015]
[Action / Effect]
According to the above feature, the sealing material is stored in a state of being sealed in the inner peripheral side of the pressing surface when the outer peripheral side of the pressing surface is in contact with the wall. As a result, the space between the pipe joint and the wall body is reliably filled with the sealing material, and high sealing performance is realized.
[0016]
The features, functions and effects of the pipe joint fixing structure for a septic tank according to claim 4 of the present invention are as follows.
〔Characteristic〕
The pipe joint fixing structure for a septic tank according to claim 2 or 3, wherein a concave portion is formed in the sealing member with respect to the pressing surface.
[0017]
[Action / Effect]
According to the above feature, even when the pipe joint is supported on the wall by tightening the nut, the sealing material is stored in a state of being sealed in the space of the concave portion formed on the pressure-pressing surface. As a result, the sealing performance on the pinching surface can be maintained for a long time even after the nut is tightened.
[0018]
The features, operations 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 walls are coaxial such that the diameter increases in the direction in which the walls overlap, or the diameter decreases in the direction in which the walls overlap. 3. A ring-shaped rib that is arranged on the core and that is fitted into the large-diameter side opening with respect to the side where the small-diameter opening is formed in the adjacent wall bodies, It is in.
[0019]
[Action / Effect]
According to the above feature, not only can the position displacement of each wall be prevented by arranging the ring-shaped rib formed on the other wall into the one opening of the adjacent wall, but also the large-diameter wall can be prevented from being displaced. By forming a seal between the side openings and the ribs, a seal between the respective walls can also be realized. As a result, high sealing performance is realized while maintaining the relative positional relationship between the wall bodies with high accuracy.
[0020]
The features, operations and effects of the pipe joint fixing structure for a septic tank according to claim 6 of the present invention are as follows.
〔Characteristic〕
The pipe joint fixing structure for a septic tank according to claim 5, wherein the amount of protrusion of the rib is set to a value smaller than the thickness of an adjacent wall, and the rib is fitted into the opening into which the rib is fitted from the side opposite to the rib. The fitting portion is formed on at least one pressing surface of the flange portion, the nut, and the washer member fitted to the screw portion.
[0021]
[Action / Effect]
According to the above feature, by fitting the fitting portion into the opening, the pipe joint can be supported in a positioning state with respect to the wall. As a result, the pipe joint can be supported and fixed with high positional accuracy.
[0022]
BEST MODE FOR CARRYING OUT 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 an 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 arranged in this order from the raw water inlet In side to the discharge port Ex side, and the partition wall is arranged inside the main body A. An anaerobic treatment tank N, an aerobic treatment tank E, a treatment water tank T, and a disinfection tank Q are formed in a space defined by B (the upper concept of the first, second, and third partition walls) to constitute a purification tank. Have been.
[0023]
This septic tank is installed buried under the ground, and in order to perform inspection and maintenance while being installed under the ground, a lid that is opened upward at the upper position of the main body A and that can be opened and closed 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 glass fiber as a reinforcing material with an unsaturated polyester resin, a filler, and other additives to form a sheet. The SMC is formed into a convex mold and a concave mold. After that, the main body A and the partition wall B are formed by a pressure and heat treatment process using a press working machine.
[0025]
In this septic tank, a raw water pipe 1 is supported by a pipe joint K fixed to the raw water inlet In, and a discharge pipe 1 is supported by a pipe joint J fixed to a discharge port Ex. The structure for fixing the pipe joint J to the discharge port Ex corresponds to the pipe joint fixing structure of the present invention. Further, the pipe joint J is not limited to being applied to the septic tank having the configuration shown in FIGS. 1 and 2, but is applicable to a septic tank having a different configuration.
[0026]
That is, as shown in FIGS. 3 to 8, the wall 2 forming the disinfecting tank Q and the wall 2 forming the main body A of the purification tank are overlapped with each other at an inclined position at the outlet Ex. The openings 2A and 2A having a pair of engaging pieces 2T protruding from the inner periphery of the wall 2 are formed on a coaxial core. The pipe joint J is fixed. Among these openings 2A, 2A, the diameter of the one arranged inside the purification tank (the opening 2A formed in the wall 2 of the disinfection tank Q) is set to be larger than the diameter of the opening of the outer wall 2. . The engagement piece 2T formed on the inner periphery of the opening 2A may be formed on only one of the openings 2A.
[0027]
The pipe joint J has a threaded portion 5A formed on an outer periphery thereof, and a resin-made tubular member 5 integrally formed with a flange portion 5B; a resin-made washer member 6 fitted externally to the tubular member 5; And a resin nut 7 screwed into the screw portion 5A. The pipe joint J is configured to support the pipe 1 in a horizontal posture and to exhibit a good sealing state in a state where the pipe joint J is fixed to the wall bodies 2 and 2. Will be described in detail.
[0028]
That is, the screw portion 5A of the cylindrical member 5 is formed on the outer periphery of the cylindrical member 5 around the axis X, and its outer diameter can be inserted into the small-diameter side opening 2A with almost no gap. Is set to the dimensions. The flange portion 5B of the tubular member 3 is formed so that the entire flange portion 5B is inclined with respect to the axis X of the tubular member 5 so as to follow the inclined posture of the wall bodies 2A, 2A. A fitting portion 5D that fits into the large-diameter side opening 2A is formed on the pressing surface 5P of the flange portion 5B facing the wall 2 so as 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 tubular member 5, and a pair of groove portions 5G is formed in the screw portion 5A along the direction of the axis X. It is formed.
[0029]
Of the pressing 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 such that the outer peripheral side is close to the wall side and the inner peripheral side is away from the wall side. The horn is displaced in the shape of the inner surface. Also, as shown in FIG. 8, the outer peripheral portion of the annular portion 5E is in contact with the wall 2 of the disinfecting tank Q, and the protruding end of the fitting portion 5D is fitted to contact the wall 2 of the main body A of the purification tank. The protrusion amount of the portion 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 non-rotatably supported in a state of being fitted to the cylindrical member 5, and a wall of the washer member 6. The pressing surface 6P disposed on the side facing the body 2 is formed in an inclined posture along the wall 2 with reference to the axis X, and the pressing surface 6P is located on the side opposite to the pressing surface 6P. The pressed surface 6V with which the nut 7 contacts is formed in a posture orthogonal to the axis X. The nut 7 is formed integrally with a screw surface (female screw) 7A screwed into the screw portion 5A of the tubular member 5 and a plurality of operated pieces 7B that receive a rotational operation force.
[0031]
Since the pipe joint J is configured as described above, when the pipe joint J is fixed to the walls 2 and 2 of the septic tank, the pipe joint J is first formed on the wall 2 of the main body A as shown in FIG. After injecting and forming the sealing material S on the inner surface side of the opening 2A, the wall 2 of the disinfection tank Q is overlaid. Then, the tubular member 5 is inserted through the opening 2A with the engaging piece 2T of the opening 2A engaged with the groove 5G, and then the tubular member 5 inserted through the opening 2A. The washer member 6 is fitted into the groove portion 5G of the screw portion 5A with the engagement piece 6T engaged therein, and the screw portion 7A of the nut 7 is screwed to the screw portion 5A of the tubular member 5. When the tubular member 5 is inserted into the opening 2A in this manner, the engaging piece 2T of the opening 2A and the groove 5G of the tubular member 5 engage, so that the tubular member 5 is 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 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 pressing surface 5P in the flange portion of the cylindrical member 5 as shown in FIG. 7, and as shown by the imaginary line in FIG. Two or two openings 2A may be used. In order to improve the sealing property between the two walls 2, 2, among the opening edges of the wall 2 (Q) in which the large-diameter opening 2 A is formed in FIG. By chamfering the side (the right side in the figure) or forming a concave portion, it is also possible to create a space for storing the sealing material S in a state where the two walls 2, 2 are overlapped. is there.
[0033]
Further, the sealing material S is used such as an epoxy resin type or a polyurethane resin type, which is cured by mixing a main agent and a curing agent, and a dispenser for mixing and injecting two liquids of the main agent and the curing agent upon injection is used. used.
[0034]
Thereafter, 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 in the fitting portion 5D and the side of the annular portion 5E. Further, the sealing material S is moved from the gap between the small-diameter opening 2A and the screw portion 5A to the washer member 6 by the action of the clamping force. Flows out and is pressurized and filled into the screw portion 5A and the inner peripheral portions of the openings 2A and 2A of the walls 2 and 2 respectively. Thereby, even if a minute space exists between the wall bodies 2 and 2 and the cylindrical member 5, the sealing material S is solidified in a state where the sealing material S enters the space and maintains the sealed state. In this support state, the sealing material S is provided in the space formed on the inner peripheral side of the fitting portion 5D and the annular portion 5E (the space between the fitting surface formed in the inner surface of the horn and the wall). Is stored in a state where it can be sealed, and a good sealing state is maintained without running out of the sealing material S.
[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 into the inner surface of the cylindrical member 5 until it comes into contact with the stopper portion 5C. Thus, the pipe 1 is firmly supported by the pipe joint J.
[0036]
As described above, according to the present invention, the process of forming the sealing material S can be performed only once by merely setting the difference between the opening diameters of the openings 2A and 2A formed in the superposed walls 2 and 2. After the sealing material S is formed, the pipe joint J is set and the nut 7 is merely tightened, and the pipe joint J is pressed against the wall bodies 2 and 2 by the clamping force from the flange portion 5B and the nut 7. And at the same time, provide a good sealing condition. In particular, since the fitting portion 5D is formed on the flange portion 5B, the relative positional relationship between the pipe joint J and the wall body 2 can be maintained at an appropriate position with high accuracy, and furthermore, the flange portion 5B is sandwiched. Since the pressure surface 5P is formed in the shape of the inner surface of the horn, the sealing material S is reliably filled under pressure while the sealing material S is stored in the gap between the pipe joint J and the wall body 2 and sealed. In addition to preventing water leakage from the inside of the septic tank to the outside space of the septic tank at the portion J, the intrusion of water from the outside of the septic tank to the inside of the septic tank is prevented.
[0037]
The present invention also provides, for example, a plastic material (elastomer or the like) that can be deformed and flows freely by applying pressure, such as a putty-like material, or a resin (elastomer or the like) that can be deformed flexibly, as a seal material S. It is possible to use the pipe joint J of the present invention by setting it in a form or the like that is molded in advance and attached to the tubular member 5 in a form of being fitted to the outside, and supporting the pipe against the partition wall B inside the septic tank. It can also be used to
[0038]
In particular, as a modified example of the first embodiment, as shown in FIGS. 9 and 10, a resin tubular member 5 having a threaded portion 5A formed around a pipe joint J and a threaded portion 5A are formed. It is also possible to configure with a resin-made nut 7 to be screwed in. (Those having the same functions as those of the first embodiment are denoted by the same reference numerals and symbols as those of the first embodiment. There). That is, the flange portion 5B is formed such that the pressing surface 5P is positioned on a virtual plane inclined with respect to the axis X of the cylindrical member 5, and the axis Y is positioned perpendicular to the virtual plane. 5A is formed in the cylindrical member 5 so that the washer member 6 of the first embodiment is not required.
[0039]
Further, in this modification, a pair of fitting portions 5G is formed on the outer peripheral portion of the fitting portion 5D of the tubular member 5, and the engaging piece 2T fitted to the fitting portion 5G is formed in the opening of the inner wall surface 2. It is formed on the inner periphery of 2A to determine the attitude of the tubular member 5 with respect to the walls 2, 2. In the case where the fitting portion 5G is formed in this way, a space in which water flows in the direction of the axis X is formed as compared with the groove portion 5G formed on the outer surface of the tubular member 5 as in the first embodiment. Since it is not performed, the sealing property is further improved.
[0040]
When the pipe joint J is fixed to the openings 2A and 2A having different diameters formed in the walls 2 and 2 arranged in a superposed state, after the sealing material S is injected and formed as described above, After arranging each so that the fitting part 5G and the engagement piece 2T are fitted, 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 walls 2 and 2. In particular, in this configuration, it is possible to directly tighten and fix the wall bodies 2 and 2 with the pressing surface 7P of the nut 7 and the pressing surface 5P of the flange portion 5B without using the washer member. It is also possible to omit the number of parts by omitting it. In this modification, the protrusion amount of the fitting portion 5D formed on the flange portion 5B is made equal to the thickness of the wall 2 of the disinfecting layer Q.
[0041]
Further, in this modified example, as shown in the figure, a plurality of concave portions D are formed in the fitting portion 5D and the annular portion 5E of the flange portion 5B, so that the nut T is tightened. The sealing material S is stored in the concave portion D so that the sealing property can be improved.
[0042]
[Second embodiment]
In the second embodiment, components having the same functions as those in the first embodiment are denoted by the same reference numerals and symbols as 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 to be larger than the opening 2A formed in the wall 2 of the disinfecting tank Q. A fitting portion 6D that fits into the opening on the large diameter side with respect to the pressing surface 6P of the washer member 6 is formed so as to protrude, and an annular portion 6E is formed at an outer peripheral position of the fitting portion 6D. After the sealing material S is applied in one step, for example, the sealing material S is formed on the wall surface 2 on which the small-diameter opening 2A is formed, or the sealing material S is formed on the side of the pressing surface 6P of the washer member 6. Then, the pipe joint J can be fixed to the wall 2 by the tightening operation of the nut 7. Further, in the second embodiment, the structure described in the modification of the first embodiment may be employed as a structure for supporting the cylindrical member 5 so as not to rotate with respect to the wall 2. .
[0044]
In particular, as a modification of the second embodiment, as shown in FIG. 12, a pipe joint J is screwed to the resin-made tubular member 5 having a threaded portion 5A formed on the outer periphery thereof and the threaded portion 5A. It is also possible to configure a resin nut 7 (those having the same functions as those of the second embodiment are denoted by the same reference numerals and symbols as those of the second embodiment). That is, the flange portion 5B is formed so that the pressing surface 5P is positioned on a virtual plane in which the flange portion 5B of the tubular member 5 is inclined with respect to the axis X, and the axis center in a posture orthogonal to the virtual plane. A screw portion 5A having Y as the axis is formed in the cylindrical member 5 so that the washer member 6 of the second embodiment can be omitted.
[0045]
In this modification, the protrusion of the fitting portion 7D formed on the nut 7 is made to match the thickness of the wall 2 of the disinfecting layer Q, and the fitting portion 7D of the nut 7 and the annular portion 7E as shown in FIG. By forming a plurality of recesses D with respect to the above, when the nut T is tightened, the sealing material S is stored in the recesses D to improve the sealing performance.
[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 of the main body A of the septic tank is formed to have a larger diameter than the opening 2A of the wall 2 of the disinfecting tank Q. Along the opening edge of the opening 2A of the wall 2, an annular rib 2B protruding from the large-diameter opening 2A is provided. By setting the amount of protrusion of the rib 2B to be equal to the thickness of the wall 2 having the large-diameter opening 2A, the rib 2B can be arranged in a state of being fitted into the large-diameter opening 2A. And the surface of the wall 2 are made equal. Further, in the third embodiment, the structure described in the modification of the first embodiment may be employed 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 the cylindrical member 5 is inserted into the opening 2A of the wall 2, the inner peripheral portion of the small-diameter opening is shifted from a position covering the gap formed annularly between the rib 2B and the large-diameter opening 2A. After the sealing material S is applied in one step, for example, by forming the sealing material S on the pressing surface 6P of the washer 6, or by tightening the nut 7, The sealing material S is pressurized and sealed between the two wall bodies 2 and 2 and between the wall bodies 2 and 2 and the cylindrical member 5 to form the pipe joint J in a state of high sealing property. It can be fixed to 2, 2.
[0049]
In particular, as a modified example of the third embodiment, as shown in FIG. 14, a pipe joint J is screwed into a resin cylindrical member 5 having a threaded portion 5A formed on the outer periphery thereof and the threaded portion 5A. It is also possible to form a nut 7 made of resin (those having the same functions as those of the third embodiment are denoted by the same reference numerals and symbols as those of the third embodiment). That is, the flange portion 5B is formed such that the pressing surface 5P is positioned on a virtual plane inclined with respect to the axis X of the cylindrical member 5, and the axis Y is positioned perpendicular to the virtual plane. 5A is formed in the cylindrical member 5 so that the washer member 6 of the first embodiment is not required.
[0050]
In the third embodiment, the opening 2A of the wall 2 of the disinfection tank Q is formed to have a larger diameter than the opening 2A of the wall of the main body A of the septic tank, and the opening 2A of the wall 2 of the main body A is opened. An embodiment in which an annular rib 2B that fits into the large-diameter opening 2A protrudes along the edge may be used.
[0051]
[Fourth Embodiment]
In the fourth embodiment, components having the same functions as those in the first embodiment are denoted by the same reference numerals and symbols as in the first embodiment.
[0052]
In the fourth embodiment, as shown in FIG. 15, similarly to the third embodiment, a rib 2B fitted into a large-diameter opening 2A formed in a wall 2 is formed with a small-diameter opening 2A. The protrusion of the rib 2B is set to be 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. Further, 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 2. .
[0053]
With this configuration, after the cylindrical member 5 is inserted into the opening 2A of the wall 2, the inner peripheral portion of the small-diameter opening is shifted from the position covering the annular gap formed between the rib 2B and the large-diameter opening 2A. After applying the sealing material S in one step, for example, forming the sealing material S on the pressing surface 6P of the washer 6, or by tightening the nut 7, The sealing material S is pressurized and sealed between the wall members 2 and 2 and between the wall members 2 and 2 and the cylindrical member 5 in a state of high sealing performance, and the fitting portion The pipe joint J can be stably fixed to the wall bodies 2 and 2 by engaging the 6D with the annular concave portion formed in the wall body 2.
[0054]
In particular, as a modification of the fourth embodiment, as shown in FIG. 16, a pipe joint J is screwed to a resin-made tubular member 5 having a threaded portion 5A formed on the outer periphery thereof and the threaded portion 5A. It is also possible to configure a resin nut 7 (those having the same functions as those of the fourth embodiment are denoted by the same reference numerals and symbols as those of the fourth embodiment). That is, the flange portion 5B is formed such that the pressing surface 5P is positioned on a virtual plane inclined with respect to the axis X of the cylindrical member 5, and the axis Y is positioned perpendicular to the virtual plane. 5A is formed in the cylindrical member 5 so that the washer member 6 of the first embodiment is not required.
[0055]
In the fourth embodiment, the opening 2A of the wall 2 of the disinfection tank Q is formed to have a larger diameter than the opening 2A of the wall of the main body A of the septic tank, and the opening 2A of the wall 2 of the main body A is opened. An embodiment in which an annular rib 2B that fits into the large-diameter opening 2A is protruded along the edge may be used.
[0056]
[Another embodiment]
The present invention is not limited to the above-described embodiment. For example, when fixing a pipe joint to 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 a septic tank. It is also possible to use it.
[Brief description of the drawings]
FIG. 1 is a vertical sectional 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 an exploded cross-sectional view of the pipe joint according to the first embodiment;
FIG. 5 is a sectional view of the pipe joint in a state of being supported by a wall 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 sectional view showing a state in which a sealing material is formed on the side of the flange portion according to the first embodiment;
FIG. 8 is a cross-sectional view of the pipe joint supported by the wall 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 an exploded sectional view of a pipe joint according to a modification of the first embodiment;
FIG. 11 is a sectional view of a disassembled state of a pipe joint according to a second embodiment.
FIG. 12 is an exploded cross-sectional view of a pipe joint according to a modification of the second embodiment.
FIG. 13 is a cross-sectional view of the pipe joint of the third embodiment in an exploded state.
FIG. 14 is an exploded sectional view of a pipe joint according to a modification of the third embodiment.
FIG. 15 is a cross-sectional view of a disassembled state of a pipe joint according to a fourth embodiment.
FIG. 16 is an exploded cross-sectional view of a pipe joint according to a modification of the fourth embodiment.
[Explanation of symbols]
2 wall
2A opening
2B rib
5 tubular member
5A screw part
5B flange
5D fitting part
6 Washer member
6D fitting part
7 nuts
D recess
S sealing material

Claims (6)

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浄化槽の配管継手固定構造。
A pipe joint was provided with a cylindrical member having a screw portion formed on the outer periphery, a flange portion integrally formed with the cylindrical member, and a nut screwed into the screw portion, and formed on the wall of the septic tank. The pipe joint fixing structure of the septic tank in which the pipe member is inserted in a form in which the wall of the septic tank is sandwiched by the clamping force from the flange portion and the nut by inserting the tubular member into the opening, screwing the nut into the screw portion and tightening the nut. And
The wall of the septic tank is formed by a plurality of overlapping walls, and among the openings formed in the respective walls, a difference is set in an opening diameter of an opening formed in an adjacent wall, and a peripheral portion of each of the openings. A pipe joint fixing structure for a septic tank in which a plurality of wall bodies are tightened and fixed by a clamping force from the flange portion and the nut in a state where a sealing material is formed at a portion where the sealing member can be sealed.
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、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少なくとも1つの挟圧面に対して、前記複数の開口の少なくとも1つに嵌り込む嵌合部を形成してある請求項1記載の浄化槽の配管継手固定構造。The openings formed in the plurality of walls are arranged on a coaxial core such that the diameter increases in the direction in which the walls overlap, or the diameter is reduced in the direction in which the walls overlap, and the flange portion, The septic tank according to claim 1, wherein a fitting portion that fits into at least one of the plurality of openings is formed on at least one pressing surface of the nut and a washer member that is fitted to the screw portion. Piping joint fixed structure. 前記挟圧面が、締付け時において、外周側が前記壁体に近接し、内周側が前記壁体から離間する形状に成型してある請求項2記載の浄化槽の配管継手固定構造。3. The pipe joint fixing structure for a septic tank according to claim 2, wherein the clamping surface is molded so that an outer peripheral side is close to the wall body and an inner peripheral side is separated from the wall body at the time of tightening. 前記挟圧面に対して前記シール材が入り込む凹部を形成してある請求項2又は3記載の浄化槽の配管継手固定構造。The pipe joint fixing structure for a septic tank according to claim 2 or 3, wherein a recessed portion into which the sealing material enters is formed with respect to the pressing surface. 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、小径の開口が形成された側に対して大径側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請求項1記載の浄化槽の配管継手固定構造。The openings formed in the plurality of walls are arranged on a coaxial core so that the diameter increases in the direction in which the walls overlap, or the diameter decreases in the direction in which the walls overlap, and the walls adjacent to each other The pipe joint fixing structure for a septic tank according to claim 1, wherein a ring-shaped rib that fits into the large-diameter side opening of the body is formed integrally with the wall body with respect to the side where the small-diameter opening is formed. 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を前記フランジ部と、ナットと、前記ネジ部に外嵌されるワッシャ部材との少なくとも1つの挟圧面に対して形成してある請求項5記載の浄化槽の配管継手固定構造。The protrusion amount of the rib is set to a value smaller than the thickness of the adjacent wall, and the fitting portion fitted from the side opposite to the rib with respect to the opening into which the rib is fitted is the flange portion, the nut, and The pipe joint fixing structure for a septic tank according to claim 5, wherein the pipe joint is formed on at least one pressure surface between the washer member and the washer member externally fitted to the screw portion.
JP2003009675A 2003-01-17 2003-01-17 Piping joint fixing structure of septic tank Expired - Lifetime JP4303974B2 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008043888A (en) * 2006-08-17 2008-02-28 Fuji Clean Kogyo Kk Structure for fixing socket
JP2011206630A (en) * 2010-03-29 2011-10-20 Asahi Group Holdings Ltd Structure of water discharge mechanism installed on upper lid of treatment tank, structure of upper lid of treatment tank, and treatment tank
JP2012016666A (en) * 2010-07-08 2012-01-26 Yokohama Rubber Co Ltd:The Method for manufacturing septic tank
KR101119824B1 (en) * 2009-11-13 2012-02-28 정은희 Plastic water pipe with fiberglass reinforced plastic flange
JP2012050955A (en) * 2010-09-03 2012-03-15 Fuji Clean Co Ltd Transfer pipe and device for treating waste water
KR101253291B1 (en) * 2012-03-30 2013-04-10 이성훈 Union joint for chamber and method installing it

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008043888A (en) * 2006-08-17 2008-02-28 Fuji Clean Kogyo Kk Structure for fixing socket
KR101119824B1 (en) * 2009-11-13 2012-02-28 정은희 Plastic water pipe with fiberglass reinforced plastic flange
JP2011206630A (en) * 2010-03-29 2011-10-20 Asahi Group Holdings Ltd Structure of water discharge mechanism installed on upper lid of treatment tank, structure of upper lid of treatment tank, and treatment tank
JP2012016666A (en) * 2010-07-08 2012-01-26 Yokohama Rubber Co Ltd:The Method for manufacturing septic tank
JP2012050955A (en) * 2010-09-03 2012-03-15 Fuji Clean Co Ltd Transfer pipe and device for treating waste water
KR101253291B1 (en) * 2012-03-30 2013-04-10 이성훈 Union joint for chamber and method installing it

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