JP3895505B2

JP3895505B2 - Equipment for collecting and transferring sediment

Info

Publication number: JP3895505B2
Application number: JP21768499A
Authority: JP
Inventors: 虎男井上
Original assignee: 虎男井上
Priority date: 1999-06-24
Filing date: 1999-06-24
Publication date: 2007-03-22
Anticipated expiration: 2019-06-24
Also published as: JP2001009209A

Description

【０００１】
【産業上の利用分野】
本発明は一般産業や土木工事、下水道等において、サンドポンプ、汚泥ポンプ、汚水ポンプ、或いは落差を利用して水路、水槽、沈降槽等の内底部に沈降堆積する沈殿物を収集し移送、或いは収集し除去するのに供する設備である。
【０００２】
【従来の技術】
従来は水槽の内底部に堆積する沈殿物を収集除去する方法に、水力方式ではかくはん羽根や圧力水噴射機能を備えた水中ポンプで、ポンプ周辺の沈殿物除去を行うもの、或いは、同人の特許Ｎｏ．８５０８３８、特許Ｎｏ．１０３９３８７等のように圧力水を利用して水槽全体の沈殿物を除去しようとするもの等があり、機械方式では沈砂池、沈降槽等においてスクリュー、特殊チェーン、スクレパー等で掻き寄せた後揚泥ポンプで除去する方式が広く使用されていたが、最近では回転駆動部が水中にない水力方式の設備が好まれる傾向がある。
【０００３】
【発明が解決しようとする課題】
混入物の多い水槽や沈降槽の底全面に堆積する沈殿物を収集するのに、機械的な回転駆動部を持つ掻き寄せ機を水中に設置し稼働させることは、水質による腐蝕、回転部への混入物の咬み込み、泥土異物による軸、軸受、掻き寄せ羽根の摺動磨耗、及びこれらの保守管理を下水、廃水中で行うことは困難、かつ非衛生的でもある等の課題がある。
【０００４】
また、水力方式の場合においても、単にポンプのみで回収除去しようとしても、ポンプの吸引力、或いは吸込流れで回収できる範囲は吸込口周辺に限られ、圧力水をフラッシングして集積、またはかくはん除去する方法では、水槽の安静を損なうばかりでなく、拡散損失の大きいフラッシングに大きな動力が必要になり、採用できる水槽は限定され、沈殿物が堆積したままで水槽を使用すれば、貯留槽容積が小さくなるばかりでなく、堆積により狭小な開口状態となったポンプは揚水量を低下させ、また、崩落による閉塞で運転不能になりやすい等の課題がある。
【０００５】
【課題を解決するための手段】
前記課題を解決するためになされた請求項１に記載の発明は、その全長にわたって上方が覆われてかつその下方側部が開口した覆水路を、水路や水槽の内底部に配設し、充分な流動水速度を与えた水をこの覆水路に流し、覆水路に流れる水に接する沈殿物を流送することで、上記下方側部より外部の沈殿物を覆水路内に崩落流入させて収集し流送する沈殿物を収集移送する設備であって、上記覆水路の一端にポンプの吸込口が接続連通され、その他端に先端が上方に伸延し、沈殿物より上方の水を吸水する吸水管が接続連通された沈殿物を収集移送する設備である。
への字形や逆Ｕの字形等の形状を有する部材で、上方が覆われ下方側部が開口した覆水路が、水槽の内底部に直線に伸延して配設される。
【０００６】
請求項２に記載の発明は、上記吸水管は、上記水路または水槽の壁面に沿って上方に伸延し、そのほぼ全高さにわたって縦長のスリットまたはスクリーンを備えて開口した請求項１に記載の沈殿物を収集移送する設備である。
覆水路の一端に、陸上に設置した揚泥ポンプの吸込口、または覆水路の上方に載置した水中ポンプの吸込口が接続連通される。覆水路の他端に、沈殿物に埋没する恐れがある場合に、上方に伸延し、沈殿物より上方の水を吸水する吸水管が接続連通される。沈殿物に埋没の恐れがない場合には、吸水管を接続連通させず開放とする。また、落差を利用できる場合は、ポンプに替えバルブを備えた排泥管が覆水路の端部に接続され、その排泥管を介して沈殿物が水槽外に排出される。
【０００７】
請求項３に記載の発明は、上記覆水路は、上記水路または水槽の内底部に対して傾斜させ、上記ポンプの吸込口に連通されたその一端の高さが他端側よりも低い請求項１または請求項２に記載の沈殿物を収集移送する設備である。
【０００８】
請求項４に記載の発明は、上記覆水路にポンプの吸込口を接続するとともに、この接続部を中心にして覆水路を周回させた請求項１または請求項２に記載の沈殿物を収集移送する設備である。
水槽の内底部の大きさおよび形状に合わせて、ポンプの吸込口を接続するとともに、この接続部を中心にして覆水路を周回させる。周回させる覆水路の長さおよび形状は限定されない。
【０００９】
請求項５に記載の発明は、上記水に上記流動水速度を与える少なくとも１個のノズルを、上記覆水路に配設した請求項１〜請求項４のいずれか１項に記載の沈殿物を収集移送する設備である。
水槽の延びる方向に、内底面に沿って長い覆水路が配設される。この覆水路に、圧力水を噴射するノズルが配設される。ノズルの数、ノズルの間隔は限定されない。
【００１０】
【作用】
請求項１〜請求項５に記載の発明にあっては、ポンプの休止時に、沈殿物が覆水路の上方に深く堆積しても、上方が覆われた覆水路の内部上方には、沈殿物が堆積しない空隙が残る。この空隙は、覆水路の全長にわたる空隙の連なりとなり疑似管路となる。この覆水路の一端に接続連通したポンプを稼働させれば、覆水路の他端に接続した吸水管の先端より、堆積した沈殿物より上方の水を吸入し揚水を始める。
このとき、覆水路の空隙の水は、ポンプの揚水量に応じた流動水速度と負圧を生じる。この空隙の流動水に接する沈殿物は、流動水速度に応じて、摺動流れ、跳躍流れ、けん濁流れ等の状態で流送される。これと同時に覆水路の流路面積が拡大され、幾分か内部負圧も加圧され、下方側部から覆水路に接する沈殿物が崩落し流入する。これにより、覆水路内流速、すなわちポンプの揚水量に応じて、沈殿物の収集移送することができる。沈殿物の除去が進み、覆水路の下方側部が沈殿物の埋没から開放されれば、覆水路による良好な高濃度の沈殿物除去は終了する。
実際は、水槽内に均一に沈殿物が堆積することは少ない。そこで、本発明の設備は、水槽内の沈殿物の堆積量の多い側の覆水路の一端にポンプを接続連通させる。一方、覆水路の他端は埋没しない状態でポンプを稼働させて、沈殿物の除去作業を行う。これにより、他端の周辺からの水の吸い込みを利用して、沈殿物を崩落流入させることができる。従って、更なる高濃度の沈殿物の収集移送ができる。
【００１１】
請求項２に記載の発明にあっては、覆水路全体が沈殿物に埋没した場合、覆水路の他端に接続連通した吸水管は、先端が吸水できるだけでなく、上方に伸延した吸水管の全面から吸水できるように、縦長のスリットまたはスクリーンを備えた吸水管とする。これにより、吸水による沈殿物の崩落流入が助長されるともに、吸水管周辺の沈殿物の排除が速やかに行われて、覆水路の他端から容易に沈殿物の収集移送することができる。
【００１２】
請求項４に記載の発明にあっては、水槽の大きさに合わせて周回させ、覆水路を長く配設することができる。また、水槽の形状に合わせて四角形や多角形の形状にして周回させることができる。
【００１３】
請求項５に記載の発明にあっては、ノズルから圧力水を噴射してノズル間の流動水速度の加速を繰り返し、覆水路全体の流動水速度を維持するようにすれば、長い覆水路の場合においても沈殿物を収集移送できる。また、仮に沈殿物の収集移送が進み、浅くなった埋没泥土を吹き破ったとしても、水槽内を大きくかくはんすることはない。むしろ覆水路に接する沈殿物を押し流す効果があり、長い覆水路の場合においても水槽の安静を大きく損なうことなく、沈殿物の収集移送を行うことができる。
【００１４】
以上説明したように本発明の沈殿物を収集移送する設備において、覆水路の沈殿物と接する下方側部は、粗い表面粗さの管路であり、覆水路の上方は、一般配管路に等しい滑らかな表面粗さの管路と考えることができる。よって、覆水路の上方の流動水速度は大きくなり、確実な流動水を維持する。覆水路の下方は幾分低減した流動水速度の管路として、周辺沈殿物を崩落させながら覆水路に取り込む。
なお、疑似管路になった覆水路内の沈殿物を流送するのに必要な流動水速度は、一般の水力輸送に於ける管路輸送と何ら変わるものではない。吸込方式でも圧送方式でも同一と考えて良い。通常、流動水速度は、０．２ｍ／ｓから３．０ｍ／ｓ程度の速度である。損失抵抗は、一般の水力輸送に比較し幾分大きくなる。
【００１５】
【実施例】
実施例について図面を参照しながら説明すると、図１に示す実施例の水槽１の内底部に図２（ロ）に断面図を示すように、両側部に開口高さｍを水槽底から離して上辺を覆う形に覆水路２を配設し、該覆水路２の終端は水槽外に設置した揚泥ポンプ３の吸込口に、吸込管４を介して接続連通する。覆水路２の始端は図２（イ）に断面図を示すように壁面に添う形で上方に伸延配設し、ほぼ全高さにわたってスクリーン６を備えて開口させた吸水管５に接続連通する。
【００１６】
覆水路２の下方側部開口高さｍは覆水路２の巾ｂと共に、図４（ヘ）に埋没休止中の覆水路２付近の断面図を示し、同図（ト）に稼働中の同部分の断面図を示すように、稼働中の覆水路２内の崩落角αを配慮して定めるものであるが、大き過ぎることは覆水路２の機能にほとんど支障することはないけれども、むしろ開口高さｍが小さすぎる場合は流動水と沈殿物の接触長さが十分に取れず、流動水の混合濃度を抑えて設備の安全性を増す目的以外の場合は不利益である。
【００１７】
また、覆水路２内の負圧は吸込管４の開口部に近いほど大きくなるために、図２（ロ）のｍと同図（ハ）のｎに示すように開口高さｍよりも開口高さｎを小さくする方が、吸込管４開口部周辺の沈殿物の崩落流入を遅らせるのに好都合であり、特に覆水路２の全長が長い場合には、覆水路２全体を傾斜させて配設することも必要である。
【００１８】
また、水槽１の横断面方向の形状は図３（ニ）のように平坦な内底面とすれば、沈殿物の除去作業後にも覆水路２の両側には、当該沈殿物の水中での安息角で傾斜して堆積した残留沈殿物が固定的に残るけれども、同図（ホ）に示す形態の傾斜壁ｅ及び底部溝ｄを備えて形成すればほぼ完全な沈殿物の除去が行える。
【００１９】
図５に示す実施例は水槽内底面上に自由に設置できるように、直線状に伸延した覆水路２Ａの一端に水中ポンプ３Ａを載置する台座７Ａを設け、該台座７Ａの中央に開口し下方に伸延する吸込管４Ａは下方端を開口すると共に、覆水路２Ａ端部に接続連通させる、覆水路２Ａの始端には図９（カ）に示す断面図と同形状の円筒の一部を切り欠き、ほぼ全高さにわたって開口させ、該開口部外周をスクリーン６Ａで覆われた吸水管５Ａを接続連通させたものであり、構成が簡単なことに併せ設置場所の移動が簡単に出来る特徴がある。
【００２０】
なお、図１及び図５の実施例における覆水路２，２Ａの形態は図６（チ）（リ）（ヌ）に示すような形態とすることもできる。
【００２１】
図７に側面図を示す実施例は図８（ル）（ヲ）に下方接地面から見た図、および図７のＦ部断面形状を図９（ワ）に示すように、片側のみを開口する覆水路２Ｂを開口部が外方を向くように長円形状に周回させて配設し、端部円形中央上部に水中ポンプ３Ｂを載置する台座７Ｂを設け、図８（ヲ）に示すように覆水路２Ｂを形成する内周側壁、吸込管の下方端部、及び吸込口ｆと覆水路２Ｂの始端ｃとを仕切る壁ｇが接地仕切をなすように構成し、吸水管５Ｂより吸入された上方水はｃより覆水路２内の空隙部ａに流入し、吸水管４Ｂ端ｆから水中ポンプ３Ｂに吸入される。
【００２２】
本実施例の場合、覆水路２Ｂの長さが長くなり混合時間が十分に取れるために、混合濃度を高めやすいことと、幾分幅広く沈殿物を除去できる、また、製造しやすくするために覆水路を長方形に周回配設し形成することもできる。
【００２３】
図１０（タ）に側部破面図、同図（レ）に正面図を示す実施例は、覆水路２Ｃの外周側のみを開口させて円形に配設し、中央上部に水中ポンプ３Ｃを載置する台座７Ｃを設け、図１１（ソ）に下方接地面から見た図を示すように、覆水路２Ｃに接続連通させた吸水管５Ｃと、該吸水管５Ｃの一部周壁を延長して形成した仕切り壁ｇで隔離された隣接する覆水路２Ｃ部分に、水中ポンプ３Ｃの吸込口に連通する吸水管４Ｃを連通路ｆを介して接続開口させる。
【００２４】
図１１（ツ）は覆水路２Ｃ部が沈殿物ｈに埋没した状態で、水中ポンプ３Ｃが稼働し覆水路２Ｃ内のａ部流動水によって沈殿物を収集除去稼働中の予想状態図を示す、本実施例形態のものは水槽底部の大きさに合わせた大きさにできやすい事、また、製造しやすくするために覆水路を四角形や多角形等に周回配設して形成することもできる。
【００２５】
なお、図５、図７、及び図１０に示す実施例の場合において、定置して固定的に使用する設備の場合は水中ポンプの離脱を更に容易に行うために、例えば台座７Ａの一部を外方に突出させ、ガイドポールを上方に伸延し、該ガイドポールで案内して水中ポンプを昇降させ、さらに台座７Ａと水中ポンプ３Ａのサクションカバー間にシール材を介在させる事によって、自重と吸込負圧で水蜜に連結させる事ができ、水中ポンプの着脱補修が行いやすい設備とすることが出来る。
【００２６】
次ぎに図１２に示す実施例は、覆水路内に圧力水を噴射して沈殿物の収集移送を行う下水道沈砂池の側部断面図を示す、流入する下水は荒目スクリーン１２を通過し、混入する砂泥を揚泥ポンプ３Ｄが設置された窪みｋ、及び覆水路２Ｄが設置された沈砂窪みに沈降させながら、細目スクリーン１３を通過して次工程に流下させる設備である。なお、揚泥ポンプ３Ｄは図１０に示す実施例の形態のものである。
【００２７】
覆水路２Ｄの細目スクリーン１３側始端付近は図１４に詳細図、図１３（ネ）に横方向断面図、同図（ナ）に覆水路２Ｄ部の横断面方向詳細図を示すように、内底部の溝ｊに底面から開口隙間を設けて配設した覆水路２Ｄと、該覆水路２Ｄの上方に平行して配設した分配管９は共に桁１１で側部傾斜壁に固定して、分配管９より分岐し覆水路２Ｄの始端及び頭頂内部に間隔を置いて配列したノズル８に、圧力水配管１０により外部からの圧力水を供給する。
【００２８】
図１５（ラ）は沈殿物ｈに埋没した覆水路２Ｄ周辺の図を示し、同図（ム）は稼働時の覆水路２Ｄ周辺図を示すものであるが、側部傾斜壁より一段深く開設した溝ｊ内に覆水路２Ｄを配設することによって、収集移送の終了時における覆水路２Ｄの外部周辺に残留する沈殿物を、覆水路２Ｄ内流動水が開口部より噴出して流送させやすい。
【００２９】
【発明の効果】
以上述べてきたように本発明は、沈殿物の収集移送、または収集除去設備を著しく簡素化し、設備費用を低減出来るばかりでなく、広い範囲での収集移送を安定した高濃度で、水槽の安静をまったく損なうことなく行うことが出来、しかも水中に機械的な回転駆動部を一切必要としないために、動力費を低減し、維持管理を著しく簡素に出来る省エネルギー効果、および経済的効果は大なるものがある。
【図面の簡単な説明】
【図１】この発明の実施例に係る水槽の側断面図である。
【図２】この発明の実施例に係る図１のＡ部の断面を図（イ）、Ｂ部の断面を図（ロ）、Ｃ部の断面を図（ハ）に示す。
【図３】この発明の実施例に係る図１のＤ部の断面形状２例（ニ）（ホ）を示す。
【図４】この発明の実施例に係る図１のＢ部の埋没時想定断面図（ヘ）と稼働時想定断面図（ト）である。
【図５】この発明の実施例に係る直線状の覆水路に水中ポンプを連結した実施例を示す。
【図６】この発明の実施例に係る図１の実施例および図２の実施例覆水路の形状例を示す。
【図７】この発明の実施例に係る長円形に周回する覆水路を水中ポンプに連結した実施例を示す。
【図８】この発明の実施例に係る図７の実施例を下方接地面（図７のＨ）から見た図で、図（ル）は全体を示し、図（ヲ）は水槽底面に接地し仕切をなす部分のみを示す。
【図９】この発明の実施例に係る図７のＦ部の断面を図（ワ）、Ｅ部の吸水管の断面を図（カ）、Ｇ部のポンプ部より下方の断面を図（ヨ）に示す。
【図１０】この発明の実施例に係る円形状に周回する覆水路と水中ポンプを連結した実施例の側部破面図を図（タ）に示し、正面図を図（レ）に示す。
【図１１】この発明の実施例に係る図（ソ）は図１０の実施例を下方接地面から見た図であり、図（ツ）は稼働中覆水路周辺の想定沈殿物状態図を示す。
【図１２】この発明の実施例に係る覆水路内水を噴射水で加速するようにした実施例の側断面図を示す。
【図１３】この発明の実施例に係る図（ネ）は図１２のＪ部の断面図、図（ナ）は覆水路周辺の詳細断面図を示す。
【図１４】この発明の実施例に係る図１２の実施例の覆水路始端周辺の詳細図である。
【図１５】この発明の実施例に係る図１４のＦ部の断面の埋没時想定図を図（ラ）に示し、稼働時想定図を図（ム）に示す。
【符号の説明】
１、水槽
１Ｄ、沈砂池
２、２Ａ、２Ｂ、２Ｃ、２Ｄ覆水路
３、３Ａ、３Ｂ、３Ｃ、３Ｄ揚泥ポンプ
４、４Ａ、４Ｂ、４Ｃ吸込管
５、５Ａ、５Ｂ、５Ｃ、５Ｄ吸水管
６、６Ａ、６Ｂ、６Ｃスクリーン
７、７Ａ、７Ｂ、７Ｃ台座
８、ノズル
９、分配管
１０、圧力水配管
１１、揚泥管
１２、荒目スクリーン
１３、細目スクリーン
ａ、覆水路内の空隙部
ｂ、覆水路の巾
ｃ、図８の覆水路始端部
ｄ、図３（ホ）の溝
ｅ、図３（ホ）の傾斜側壁
ｆ、吸込管と覆水路の連通部
ｇ、吸込管と覆水路の仕切壁
ｈ、沈殿物
ｊ、図１２の溝
ｋ、揚泥ポンプ設置窪み
ｍ、覆水路と接地面との開口隙間
ｎ、吸込管端と接地面との開口隙間
ｒ、沈殿池の流れ方向
ｓ、覆水路内の流れ方向
α、覆水路内の崩落角度
θ、水槽内沈殿物の安息角度[0001]
[Industrial application fields]
The present invention collects and transfers sediment deposited and deposited on the inner bottom of a water channel, water tank, settling tank, etc. using a sand pump, sludge pump, sewage pump, or a head in general industry, civil engineering, sewerage, etc. Equipment for collecting and removing.
[0002]
[Prior art]
Conventionally, in the method of collecting and removing the sediment deposited on the inner bottom of the water tank, the hydropower method is a submersible pump equipped with stirring blades and pressure water injection function, which removes the sediment around the pump, or the same person's patent No. 850838, patent no. There are things such as 1039387 that use pressure water to remove the sediment in the whole water tank. In the mechanical method, the mud after being scraped with a screw, special chain, scraper, etc. in a sand basin, sedimentation tank, etc. The method of removing with a pump has been widely used, but recently, there is a tendency to favor a hydro-type facility in which the rotary drive unit is not in water.
[0003]
[Problems to be solved by the invention]
To collect sediment deposited on the bottom of the water tank and sedimentation tank with a lot of contaminants, it is necessary to install and operate a scraper with a mechanical rotation drive unit in the water. There are problems such as biting of contaminants, shafts and bearings due to mud foreign matter, sliding wear of scraping blades, and maintenance of these in sewage and wastewater being difficult and unsanitary.
[0004]
Also, even in the case of the hydraulic system, the range that can be collected by the suction force or suction flow of the pump is limited to the vicinity of the suction port, even if it is attempted to collect and remove only by the pump. This method not only impairs the calmness of the aquarium, but also requires a large amount of power for flushing with a large diffusion loss, and the aquarium that can be used is limited. Not only does the pump become smaller, but the pump that is in a narrow open state due to deposition has problems such as a reduction in pumping amount and a tendency to become inoperable due to blockage due to collapse.
[0005]
[Means for Solving the Problems]
The invention according to claim 1, which has been made in order to solve the above-mentioned problem, is provided with a water-covering channel whose upper part is covered over its entire length and whose lower side part is open at the inner bottom of a water channel or a water tank. By flowing water with a high flow rate to the overflow channel, and sending the sediment in contact with the water flowing through the overflow channel, the outside sediment collapses into the cover channel from the lower side and collected. A facility for collecting and transporting sediment to be transported, wherein the suction port of the pump is connected to one end of the above-mentioned cover channel, the tip extends upward to the other end, and absorbs water above the sediment. It is a facility for collecting and transporting sediments connected by pipes .
A water-covering channel having a shape such as a U-shape or an inverted U-shape and having an upper portion covered and an opening on a lower side portion is linearly extended and disposed on the inner bottom portion of the water tank.
[0006]
The invention according to claim 2 is the precipitation according to claim 1, wherein the water absorption pipe extends upward along the wall surface of the water channel or the water tank and is provided with a vertically long slit or screen over almost the entire height thereof. It is a facility for collecting and transporting things.
A suction port of a mud pump installed on land or a suction port of a submersible pump placed above the flood channel is connected to one end of the flood channel. When there is a possibility that the other end of the water-covered channel is buried in the sediment, a water absorption pipe that extends upward and absorbs water above the sediment is connected and communicated. If there is no risk of burial in the sediment, open the water absorption pipe without connecting it. Moreover, when a head can be utilized, the drainage pipe provided with the valve instead of the pump is connected to the end portion of the cover channel, and the sediment is discharged out of the water tank through the drainage pipe.
[0007]
The invention according to claim 3 is characterized in that the water covering channel is inclined with respect to the inner channel of the water channel or the water tank, and the height of one end thereof communicated with the suction port of the pump is lower than the other end side. A facility for collecting and transporting the precipitate according to claim 1 or claim 2 .
[0008]
The invention according to claim 4 collects and transfers the sediment according to claim 1 or 2, wherein the suction port of the pump is connected to the water-covered channel, and the water-covered channel is circulated around the connection portion. It is equipment to do.
In accordance with the size and shape of the inner bottom portion of the water tank, the suction port of the pump is connected, and the water-covered passage is circulated around this connection portion. There is no limitation on the length and shape of the water-covered channel to be circulated.
[0009]
The invention according to claim 5 is the deposit according to any one of claims 1 to 4, wherein at least one nozzle that gives the flowing water velocity to the water is disposed in the water-covered channel. It is a facility to collect and transfer.
A long water covering channel is arranged along the inner bottom surface in the direction in which the water tank extends. A nozzle that injects pressure water is disposed in the water-covering channel. The number of nozzles and the interval between nozzles are not limited.
[0010]
[Action]
In the invention according to any one of claims 1 to 5, even when the sediment is deeply accumulated above the water-covered channel when the pump is stopped, the sediment is formed inside the water-covered channel covered above. Voids that do not accumulate remain. This gap becomes a series of gaps over the entire length of the water-covered channel and becomes a pseudo pipeline. If a pump connected to one end of the water-covered channel is operated, water above the accumulated sediment is sucked from the tip of the water suction pipe connected to the other end of the water-covered channel, and pumping is started.
At this time, the water in the gap of the cover channel generates a flowing water speed and a negative pressure corresponding to the pumping amount of the pump. The sediment that comes into contact with the flowing water in the voids is sent in a sliding flow, jumping flow, suspension flow, or the like depending on the flowing water speed. At the same time, the flow channel area of the water-covered channel is enlarged, and the internal negative pressure is increased to some extent, and the sediment that contacts the water-blocked channel collapses and flows in from the lower side. Thereby, the sediment can be collected and transferred in accordance with the flow velocity in the cover channel, that is, the pumping amount of the pump. If the removal of the sediment progresses and the lower side portion of the cover channel is released from the sedimentation of the sediment, the removal of the favorable high concentration sediment by the cover channel is completed.
In practice, it is rare for sediment to deposit uniformly in the water tank. Therefore, the facility of the present invention connects and communicates a pump to one end of the cover channel on the side where the amount of deposits in the water tank is large. On the other hand, the other end of the floodway is operated without being buried, and the sediment is removed. Thereby, a sediment can be made to fall inflow using the suction of the water from the periphery of the other end. Accordingly, it is possible to collect and transfer a precipitate having a higher concentration.
[0011]
In the invention according to claim 2, when the entire water-covered channel is buried in sediment, the water-absorbing tube connected to the other end of the water-covered channel is not only capable of absorbing water at the tip but also a water-absorbing tube extending upward. A water absorption pipe with a vertically long slit or screen so that water can be absorbed from the entire surface. As a result, the collapsed inflow of the sediment due to water absorption is promoted, and the sediment around the water absorption pipe is quickly removed, and the sediment can be easily collected and transferred from the other end of the water-covered channel.
[0012]
In invention of Claim 4, it can be made to circulate according to the magnitude | size of a water tank, and a cover channel can be arrange | positioned long. Moreover, it can be made to circulate in the shape of a square or a polygon according to the shape of the water tank.
[0013]
In the invention according to claim 5, if the pressure water is jetted from the nozzles and the acceleration of the flowing water speed between the nozzles is repeated to maintain the flowing water speed of the entire covered water channel, In some cases, the sediment can be collected and transferred. Moreover, even if the sediment collection and transfer progresses and the buried mud that has become shallow is blown through, the inside of the aquarium is not greatly stirred. Rather, it has the effect of sweeping the sediment in contact with the cover channel, and even in the case of a long cover channel, the sediment can be collected and transferred without significantly impairing the rest of the water tank.
[0014]
As described above, in the facility for collecting and transporting the sediment of the present invention, the lower side portion in contact with the sediment of the cover channel is a rough surface roughness conduit, and the upper portion of the cover channel is equal to the general pipeline. It can be thought of as a pipe with a smooth surface roughness. Therefore, the flowing water speed above the cover channel increases, and reliable flowing water is maintained. The lower part of the cover channel is taken as a conduit with a somewhat reduced flow rate, and the surrounding sediment is crushed and taken into the cover channel.
In addition, the flowing water speed required to flow the sediment in the covered channel that has become a pseudo pipeline is not different from the pipeline transport in general hydraulic transportation. The suction method and the pressure feeding method may be considered the same. Usually, the flowing water speed is about 0.2 m / s to 3.0 m / s. The loss resistance is somewhat larger than that of general hydraulic transportation.
[0015]
【Example】
The embodiment will be described with reference to the drawings. At the inner bottom portion of the water tank 1 of the embodiment shown in FIG. The water covering channel 2 is disposed in a shape covering the upper side, and the terminal end of the water covering channel 2 is connected to and communicated with the suction port of the mud pump 3 installed outside the water tank through the suction pipe 4. As shown in the sectional view of FIG. 2 (a), the starting end of the water-covering channel 2 extends upward in a form that follows the wall surface, and is connected to and communicated with a water absorption pipe 5 that is provided with a screen 6 and opened over almost the entire height.
[0016]
The lower side opening height m of the cover channel 2 is shown in FIG. 4 (f) along with the width b of the cover channel 2 in a sectional view of the vicinity of the cover channel 2 being suspended, and FIG. As shown in the sectional view of the part, it is determined in consideration of the collapsing angle α in the water-covering channel 2 in operation, but if it is too large, it hardly affects the function of the water-blocking channel 2, but rather it is an opening. When the height m is too small, the contact length between the flowing water and the precipitate cannot be sufficiently obtained, and it is disadvantageous in cases other than the purpose of suppressing the mixing concentration of the flowing water and increasing the safety of the equipment.
[0017]
Further, since the negative pressure in the cover channel 2 becomes larger as it is closer to the opening of the suction pipe 4, the opening is higher than the opening height m as shown in m in FIG. 2 (b) and n in FIG. Decreasing the height n is advantageous for delaying the inflow of sediment around the opening of the suction pipe 4, and in particular, when the total length of the cover channel 2 is long, the entire cover channel 2 is inclined and arranged. It is also necessary to install it.
[0018]
Further, if the shape of the water tank 1 in the cross-sectional direction is a flat inner bottom surface as shown in FIG. 3 (d), the precipitates in the water will remain on both sides of the cover channel 2 even after the sediment removal operation. Although the residual sediment deposited with inclination at the corner remains fixed, if it is formed with the inclined wall e and the bottom groove d of the form shown in FIG.
[0019]
The embodiment shown in FIG. 5 is provided with a pedestal 7A for placing the submersible pump 3A at one end of the linearly extending water covering channel 2A so that it can be freely installed on the bottom surface of the aquarium, and opens at the center of the pedestal 7A. The suction pipe 4A extending downward has an opening at the lower end and is connected to and communicated with the end of the cover channel 2A. A part of a cylinder having the same shape as the sectional view shown in FIG. A notch is opened over almost the entire height, and the outer periphery of the opening is connected to and connected to a water absorption pipe 5A covered with a screen 6A. The structure is simple and the installation location can be easily moved. is there.
[0020]
In addition, the form of the water covering channels 2 and 2A in the embodiment of FIGS. 1 and 5 may be a form as shown in FIGS.
[0021]
7 is a side view of the embodiment shown in FIG. 8 (Le) (W), as viewed from the lower grounding surface, and the F section cross-sectional shape of FIG. 7 is opened on only one side as shown in FIG. 9 (W). 8B is provided with a pedestal 7B on which the submersible pump 3B is placed at the upper center of the end circular shape. In this way, the inner peripheral side wall that forms the cover channel 2B, the lower end portion of the suction pipe, and the wall g that partitions the suction port f and the start end c of the cover channel 2B form a grounding partition, and suction from the water suction pipe 5B. The upper water thus made flows from c into the gap a in the cover channel 2 and is sucked into the submersible pump 3B from the end f of the water suction pipe 4B.
[0022]
In the case of the present embodiment, since the length of the cover channel 2B becomes long and sufficient mixing time can be taken, it is easy to increase the mixing concentration, and it is possible to remove the precipitate somewhat broadly. It is also possible to form the water channel by arranging it in a rectangular shape.
[0023]
In the embodiment shown in FIG. 10 (t) as a side fracture view and as shown in FIG. 10 (l), only the outer peripheral side of the cover channel 2C is opened and arranged in a circle, and the submersible pump 3C is provided at the upper center. A pedestal 7C to be placed is provided, and as shown in FIG. 11 (s), a view seen from the lower grounding surface, a water absorption pipe 5C connected to and connected to the cover channel 2C and a partial peripheral wall of the water absorption pipe 5C are extended. A water intake pipe 4C that communicates with the suction port of the submersible pump 3C is connected and opened to the adjacent cover channel 2C separated by the partition wall g formed through the communication path f.
[0024]
FIG. 11 (tsu) shows an expected state diagram in which the submersible pump 3C is operated and the sediment is collected and removed by the a part flowing water in the overpassage channel 2C in a state where the overpassage channel 2C is buried in the sediment h. In the present embodiment, the size can be easily adjusted to the size of the bottom of the aquarium, and in order to make it easy to manufacture, the cover channel can be formed around the quadrangle or polygon.
[0025]
In the case of the embodiments shown in FIGS. 5, 7, and 10, in the case of equipment that is stationary and used in a fixed manner, for example, a part of the pedestal 7A may be used in order to more easily remove the submersible pump. Protruding outward, extending the guide pole upward, guiding the guide pole to raise and lower the submersible pump, and further interposing a seal material between the pedestal 7A and the suction cover of the submersible pump 3A, the dead weight and suction It can be connected to the nectar with negative pressure, making it easy to install and repair the submersible pump.
[0026]
Next, the embodiment shown in FIG. 12 shows a side cross-sectional view of a sewer settling basin in which pressure water is injected into a cover channel to collect and transfer sediment. The inflowing sewage passes through the coarse screen 12, In this facility, the sand mud mixed is allowed to flow down to the next process through the fine screen 13 while sinking into the depression k where the mud pump 3D is installed and the sand sinking depression where the cover channel 2D is installed. In addition, the mud pump 3D is a thing of the form of the Example shown in FIG.
[0027]
The vicinity of the fine screen 13 side start end of the cover channel 2D is shown in detail in FIG. 14, as shown in FIG. 13 (ne), a cross-sectional view in the transverse direction, and in FIG. The water covering channel 2D disposed in the bottom groove j with an opening gap from the bottom surface, and the distribution pipe 9 disposed in parallel above the water covering channel 2D are both fixed to the side inclined wall with a girder 11, Pressure water from the outside is supplied by the pressure water pipe 10 to the nozzle 8 branched from the distribution pipe 9 and arranged at intervals between the start end of the water-covering channel 2D and the top of the head.
[0028]
Fig. 15 (la) shows a view of the periphery of the cover channel 2D buried in the sediment h, and Fig. 15 (m) shows a view of the periphery of the cover channel 2D during operation, but is opened one step deeper than the side inclined wall. By disposing the cover channel 2D in the groove j, the sediment remaining in the outer periphery of the cover channel 2D at the end of the collection transfer is caused to flow out from the opening by flowing water in the cover channel 2D. Cheap.
[0029]
【The invention's effect】
As described above, the present invention not only greatly simplifies the sediment collection and collection / removal equipment, and can reduce the equipment cost, but also stabilizes the water tank with a stable and high concentration in a wide range. The energy saving effect and the economic effect can be greatly reduced because the power cost can be reduced and the maintenance management can be remarkably simplified. There is something.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a water tank according to an embodiment of the present invention.
2 is a cross-sectional view of part A of FIG. 1 according to an embodiment of the present invention, FIG. 2B is a cross-sectional view of part B, and FIG.
FIG. 3 shows two examples (d) (e) of the cross-sectional shape of the D part of FIG. 1 according to the embodiment of the present invention.
4 is an assumed sectional view (f) at the time of burying and an assumed sectional view (g) at the time of operation of part B of FIG. 1 according to the embodiment of the present invention.
FIG. 5 shows an embodiment in which a submersible pump is connected to a linear cover channel according to an embodiment of the present invention.
6 shows an example of the shape of the embodiment water-closure channel of the embodiment of FIG. 1 and the embodiment of FIG. 2 according to an embodiment of the present invention.
FIG. 7 shows an embodiment in which a cover channel that circulates in an oval shape according to an embodiment of the present invention is connected to an underwater pump.
8 is a view of the embodiment of FIG. 7 according to the embodiment of the present invention as viewed from the lower ground plane (H in FIG. 7). FIG. (L) shows the whole, and FIG. Only the part that forms the partition is shown.
FIG. 9 is a cross-sectional view of the F portion of FIG. 7 according to the embodiment of the present invention (C), a cross-section of the water absorption pipe of the E portion (F), and a cross-section below the pump portion of the G portion (Y). ).
FIG. 10 is a side sectional view of an embodiment in which an underwater pump and a water covering channel that circulates in a circular shape according to an embodiment of the present invention are connected, and a front view is shown in FIG.
11 is a view of the embodiment of FIG. 10 as viewed from the lower ground plane, and FIG. 11 shows an assumed sediment state diagram in the vicinity of the sluice channel during operation. .
FIG. 12 is a side sectional view of an embodiment in which water in a cover channel according to an embodiment of the present invention is accelerated by jet water.
13 is a cross-sectional view of the portion J in FIG. 12, and FIG. 13 (a) is a detailed cross-sectional view of the periphery of the floodway.
14 is a detailed view of the vicinity of a water-blocking channel start end of the embodiment of FIG. 12 according to an embodiment of the present invention.
FIG. 15 is a diagram illustrating an assumption when the cross section of the F portion of FIG. 14 according to an embodiment of the present invention is buried, and FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, Water tank 1D, Sand basin 2, 2A, 2B, 2C, 2D Covered channel 3, 3A, 3B, 3C, 3D Mud pump 4, 4A, 4B, 4C Suction pipe 5, 5A, 5B, 5C, 5D Water absorption pipe 6, 6A, 6B, 6C Screen 7, 7A, 7B, 7C Pedestal 8, Nozzle 9, Distribution pipe 10, Pressure water piping 11, Mud pipe 12, Coarse screen 13, Fine screen a, Cavity in the cover channel b, width of capped channel c, capped channel start end d in FIG. 8, groove e in FIG. 3 (e), inclined side wall f in FIG. 3 (e), communication portion g between suction pipe and covered channel, suction pipe and covered Waterway partition wall h, sediment j, groove k in Fig. 12, muddy pump installation recess m, opening gap between water-covering channel and grounding surface n, opening clearance between suction pipe end and grounding surface r, sedimentation basin flow Direction s, flow direction α in the overflow channel, collapse angle θ in the overwater channel, Breath angle

Claims

その全長にわたって上方が覆われてかつその下方側部が開口した覆水路を、水路や水槽の内底部に配設し、充分な流動水速度を与えた水をこの覆水路に流し、覆水路に流れる水に接する沈殿物を流送することで、上記下方側部より外部の沈殿物を覆水路内に崩落流入させて収集し流送する沈殿物を収集移送する設備であって、
上記覆水路の一端にポンプの吸込口が接続連通され、その他端に先端が上方に伸延し、沈殿物より上方の水を吸水する吸水管が接続連通された沈殿物を収集移送する設備。 A cover channel that covers the entire length and is open at the lower side of the channel is arranged at the inner bottom of the channel and the water tank, and water that has a sufficient flow rate is allowed to flow through the cover channel. A facility for collecting and transporting the sediment collected and transported by collapsing the external sediment from the lower side into the cover channel by feeding the sediment in contact with the flowing water,
A facility for collecting and transporting the sediment in which the suction port of the pump is connected and connected to one end of the water-covered channel, the tip extends upward to the other end, and a water-absorbing pipe for absorbing water above the sediment is connected and communicated.

上記吸水管は、上記水路または水槽の壁面に沿って上方に伸延し、そのほぼ全高さにわたって縦長のスリットまたはスクリーンを備えて開口した請求項１に記載の沈殿物を収集移送する設備。 The facility for collecting and transporting the sediment according to claim 1, wherein the water absorption pipe extends upward along the wall surface of the water channel or the water tank and is opened with a vertically long slit or screen over almost the entire height thereof.

上記覆水路は、上記水路または水槽の内底部に対して傾斜させ、上記ポンプの吸込口に連通されたその一端の高さが他端側よりも低い請求項１または請求項２に記載の沈殿物を収集移送する設備。 The said covering channel is inclined with respect to the inner bottom part of the said channel or a water tank, The height of the one end connected to the suction inlet of the said pump is lower than the other end side, The precipitation of Claim 1 or Claim 2 Equipment for collecting and transporting things.

上記覆水路にポンプの吸込口を接続するとともに、この接続部を中心にして覆水路を周回させた請求項１または請求項２に記載の沈殿物を収集移送する設備。 The facility for collecting and transferring the sediment according to claim 1 or 2, wherein a suction port of a pump is connected to the water-covered channel, and the water-covered channel is circulated around the connection portion.

上記水に上記流動水速度を与える少なくとも１個のノズルを、上記覆水路に配設した請求項１〜請求項４のいずれか１項に記載の沈殿物を収集移送する設備。The facility which collects and transfers the sediment according to any one of claims 1 to 4, wherein at least one nozzle that gives the flowing water velocity to the water is disposed in the water-covered channel.