JP3711187B2

JP3711187B2 - Water tank filter

Info

Publication number: JP3711187B2
Application number: JP08235697A
Authority: JP
Inventors: 友子井須; 孝之長田
Original assignee: クリオン株式会社
Priority date: 1996-10-03
Filing date: 1997-03-13
Publication date: 2005-10-26
Anticipated expiration: 2017-03-13
Also published as: ITMI971762A1; DE19732922A1; IT1293774B1; JPH10156113A

Description

【０００１】
【発明の属する技術分野】
本発明は、鑑賞魚や水草等を飼育する水槽の内部又は外部に設置され、水槽内の水を吸引して循環濾過する濾過装置に関するものである。
【０００２】
【従来の技術】
この種の一般的な濾過装置は、設置場所と駆動装置とで次のように分類され、飼育する生体の種類によって選択的に使用されている。
【０００３】
（１）水槽の内部に水に浸漬した状態で設置するいわゆる内部式濾過装置：さらに、この内部式濾過装置には、水流を作る駆動装置の違いにより次の二種類がある。
【０００４】
（１−１）羽根車を回転駆動して水流を作る直付型タービンポンプによる駆動装置：同駆動装置を用いた内部式濾過装置は、次の外付型エアポンプを駆動装置として使用した場合に起こるエア泡の上昇が発生しないので、水槽内からの二酸化炭素の逃散が回避できるため、二酸化炭素を生育に必要とする水草を主体とした水槽に使用される。
【０００５】
（１−２）外付型エアポンプから供給するエア泡の上昇により水流を作る駆動装置：同駆動装置を用いた内部式濾過装置は、酸素供給能力が高いことから、鑑賞魚を主体とした水槽に使用される。
【０００６】
（２）水槽の外部に水に浸漬しない状態で設置するいわゆる外部式濾過装置：この外部式濾過装置には、羽根車を回転駆動して水流を作る直付型タービンポンプによる駆動装置が用いられ、水槽内のレイアウトを特に重視し、極力美観を損ねたくない場合に使用される。
【０００７】
【発明が解決しようとする課題】
ところで、上記（１−１）（１−２）及び（２）の三種類の濾過装置には、いずれも一長一短があった。
【０００８】
つまり、（１−１）（１−２）の内部式濾過装置は、水槽内に設置するので、水槽外に設置スペースが要らないとか、水を効率良く循環させられるため、死水ができにくいとかという長所がある。しかし、濾過装置の表面及び内部やコード表面に藻類が付着しやすく、装置の取り外しや洗浄等のメンテナンスが面倒であるとか、生体の種類によっては装置との接触により損傷することがあるとか、水槽内の美観を損ねるとかという短所がある。
【０００９】
一方、（２）の外部式濾過装置は、前記生体の損傷も無いとか、水槽内のレイアウトを装置に邪魔されることなく楽しむことができるとかという長所がある。しかし、従来の多くの外部式濾過装置は、駆動装置と濾過容器とが嵌込式になっているため、装置の組み立てに不備があると、装置から水があふれ出すおそれがあり、また、実際に濾過装置内に濾過材や水が入ると非常に重量が増し、移動や持ち運びの際の人への負担が大きくなるという短所がある。また、この濾過装置はサイフォン式機構を取り入れているため、水槽の水面よりも下に設置しなければ、水は循環しない。従って、この濾過装置を使用した水槽を設置する際には、特別に専用の棚を購入し、上段に水槽、下段に濾過装置を設置しなければならず、結果的に必要以上にスペースや費用がかかる。
【００１０】
そして、何より問題であった点は、上記の三種類の濾過装置が、相互に変更できない構造になっていたことである。例えば、（１−１）の直付型タービンポンプによる内部式濾過装置を使用していた者が、飼育する生体の主体を水草から鑑賞魚に変え、その飼育に適した濾過方法にしたいときに、（１−１）の装置を（１−２）の外付型エアポンプによる内部式濾過装置に変更することはできなかったため、新しく（１−２）の装置を購入しなければならなかった。逆の場合でも同様である。また、水槽内のレイアウトや設置スペース等の関係から、（１−１）（１−２）の内部式と（２）の外部式との間で変更したいときにも、同様の問題があった。その結果、使用者は幾種類もの濾過装置を購入しなければならず、不経済であるとともに、使用しなくなった濾過装置をまるごと収納するための大きな収納スペースを確保する必要もあった。
【００１１】
そこで、本発明の目的は、上記課題を解決し、飼育する生体の主体、水槽内のレイアウト、設置スペース等の諸理由から、駆動装置の種類を変更したり、設置場所を内部式と外部式との間で変更したりしたいときに、濾過容器を共通部品にして最少限の交換部品と費用で合理的かつ経済的に変更でき、使用しなくなった部品を部品単位で小さい収納スペースに収納できる水槽用濾過装置を提供することにある。
【００１２】
【課題を解決するための手段】
上記目的を達成するために、本発明では、濾過材を収容（充填）するとともに水が入出可能な濾過容器と、濾過容器内に水流を作る駆動装置とを備え、水槽内の未処理水を濾過材に通すことにより浄化処理をし、その処理水を水槽内に戻す水槽用濾過装置において、次のような手段をとった。
【００１３】
（１）濾過容器と二種類以上の駆動装置とを別部品とし、前記二種類以上の駆動装置から選択される一種類の駆動装置を前記濾過容器に交換自在に接続するための駆動装置接続構造を設けた。
【００１４】
（２）濾過容器と水槽内に開口する水吸込部材と水槽内外に延ばされる水吸込ホースを連結する水吸込ホース連結部材とを別部品とし、水吸込部材又は水吸込ホース連結部材から選択される一方を濾過容器に交換自在に接続するための水吸込部接続構造を設け、濾過容器と水槽内に開口する水吹出部材と水槽内外に延ばされる水吹出ホースを連結する水吹出ホース連結部材とを別部品とし、水吹出部材又は水吹出ホース連結部材から選択される一方を濾過容器に交換自在に接続するための水吹出部接続構造を設けた。
【００１５】
（３）濾過容器と二種類以上の駆動装置とを別部品とし、二種類以上の駆動装置から選択される一種類の駆動装置を濾過容器に交換自在に接続するための駆動装置接続構造を設け、濾過容器と水槽内に開口する水吸込部材と水槽内外に延ばされる水吸込ホースを連結する水吸込ホース連結部材とを別部品とし、水吸込部材又は水吸込ホース連結部材から選択される一方を濾過容器に交換自在に接続するための水吸込部接続構造を設け、濾過容器と水槽内に開口する水吹出部材と水槽内外に延ばされる水吹出ホースを連結する水吹出ホース連結部材とを別部品とし、水吹出部材又は水吹出ホース連結部材から選択される一方を濾過容器に交換自在に接続するための水吹出部接続構造を設けた。
【００１６】
ここで、「駆動装置接続構造」、「水吸込部接続構造」及び「水吹出部接続構造」は、各部材を交換自在に接続できるものであれば特定の構造に限定されず、ネジの螺合を用いた構造、チャック構造や、バヨネット構造、締付バンド構造等を例示できるが、これらのうちではネジの螺合を用いた構造が好ましい。ネジの螺合を用いた構造は従来の嵌込式に比べて組み立ての確実性とシール性に優れるため、装置から水があふれだすおそれがないからである。
【００１７】
また、「濾過容器」としては、アウタケースと、該アウタケース内に空間をおいて挿入されて濾過材を収容するインナケースと、該アウタケースの開口部及びインナケースの開口部に脱着自在に接続される連結部材とからなり、水をアウタケースとインナケースとの間の空間を経てインナケース内の濾過材に通すようにしたものを例示できる。
【００１８】
同例の場合、インナケースの開口部に、濾過材の流出を防止するストッパを設けることが好ましい。
【００１９】
また、別の「濾過容器」としては、アウタケースと、該アウタケース内に空間をおいて挿入される導出パイプと、該アウタケースの開口部及び導出パイプの開口部に脱着自在に接続される連結部材とを含み、水をアウタケースと導出パイプとの間の空間に収容した濾過材に通してから導出パイプに流入させるようにしたものを例示できる。
【００２０】
同例の場合、アウタケースの内底面に当接して濾過材を支持する通水性支持部材を、導出パイプに連結することが好ましい。また、導出パイプに、濾過材の流出を防止するストッパを設けることが好ましい。このストッパは、導出パイプのふらつきを防止するためにアウタケースの内面に当接することが好ましい。
【００２１】
なお、濾過容器がその他の構造であっても、濾過容器に濾過材の流出を防止するストッパを設けることが好ましい。
【００２２】
また、前記アウタケース及びインナケースの素材は、特に限定されないが、ガラス製のもの（特にアウタケース）が好ましい。
【００２３】
「駆動装置」の種類は、特に限定されないが、羽根車を回転駆動して水流を作る直付型タービンポンプによるものや、外付型エアポンプから供給するエア泡の上昇により水流を作るもの等を例示できる。タービンポンプは、水陸両用（水中及び空気中のいずれにも設置できるもの）が好ましい。
【００２４】
【発明の実施の形態】
以下、本発明を具体化した水槽用濾過装置の実施形態について、図面を参照して説明する。本実施形態の水槽用濾過装置１は、図１〜図６に示すように、駆動装置の種類と設置場所を変更して使用できるようにするため、濾過材を収容するとともに水が入出可能な濾過容器２と、濾過容器２内の水を流動させる二種類の駆動装置３，４と、水槽内に開口する水吸込部材５と、水槽内外に延ばされる水吸込ホースを連結する水吸込ホース連結部材６と、水槽内に開口する水吹出部材７と、水槽内外に延ばされる水吹出ホースを連結する水吹出ホース連結部材８とを、別部品として備えている。これら各部品の詳細と関係とを順に説明する。
【００２５】
まず、濾過容器２は、図７、図８及び図９に示すように、アウタケース１１と、該アウタケース１１内に同心状に挿入されるインナケース１２と、該アウタケース１１及びインナケース１２の上端開口部に脱着自在に接続される連結部材１３とからなる。このため、濾過容器２を最少限の部品で分解可能に構成でき、濾過材の交換や洗浄も容易にできる。
【００２６】
アウタケース１１は、図７に示すように、ガラスにより有底筒状に形成され、連結部材１３と接続する上端開口部にはネジ１４が形成されている。なお、アウタケース１１の材料はガラスに限定されず、プラスチック、セラミックス等でもよいが、ガラスが好ましい。ガラス製のケースは、プラスチック製のケースと比較すると、ケースの内外に藻類が付着した場合に容易に除去ができるうえ、ケースの表面をたわし等で強めに擦っても傷が付きにくい。また、ガラス製のケースは比重が大きいので、水底に置くだけで転倒することなく安定的に設置でき、キスゴム等の固定器具による取り付けの煩わしさが解消される。
【００２７】
インナケース１２は、図７及び図８に示すように、プラスチックにより形成されて相互に脱着可能なスリット状の通水性支持底面部１５と筒部１６と上部縮径部１７とから構成され、連結部材１３と接続する上部縮径部１７の上端開口部にはネジ１８が形成されている。なお、インナケース１２の材料はプラスチックに限定されず、ガラス、セラミックス等でもよい。筒部１６内には適宜選択可能な各種の濾過材１９が収容され、通水性支持底面部１５は濾過材１９を受け支えながら水の通過を可能にしている。また、通水性支持底面部１５は筒部１６から脱着が可能であり、濾過材１９の収容や洗浄の際の取り出しはこの部分を外すことによって行う。また、インナケース１２の上端開口部には濾過材１９の流出を防止するための平面十字のストッパ２０が内挿され、ストッパ２０の中央部には後述する羽根車の軸を受けるための凹部２１が設けられている。
【００２８】
連結部材１３は、図７及び図９に示すように、プラスチックによりブロック状に形成されている。連結部材１３の下面中央部にはインナケース１２のネジ１８と螺合するネジ２３が形成され、この螺合だけで連結部材１３にインナケース１２が脱着自在に接続される。連結部材１３の下端外周部には、アウタケース１１の上端開口部に嵌入する環状嵌入部２４と、アウタケース１１の上端にＯリング２５を介して係止するフランジ部２６とが形成されている。そして、フランジ部２６に係合する係合部２７を備えたネジ部材２８をアウタケース１１のネジ１４に螺合させることにより、連結部材１３にアウタケース１１が脱着自在に接続されるとともに、Ｏリング２５で浸水防止が図られる。このようにしてアウタケース１１とインナケース１２が連結部材１３に接続されると、両ケース１１，１２の周壁相互間及び底壁相互間に空間２２が形成される。
【００２９】
連結部材１３の上端部、一側部及び他側部には、それぞれネジ３１、ネジ３２及びネジ３３が形成されている。ネジ３２の中心から連結部材１３の下面にかけては、ケース１１，１２間の空間２２に連通する水流入路３４が貫設されている。また、ネジ２３の中心からネジ３１及びネジ３３の中心にかけては、インナケース１２の上端開口部に連通する水流出路３５が貫設されている。この構造により、水流入路３４→空間２２→通水性支持底面部１５→インナケース１２内の濾過材１９→水流出路３５、という水路が形成される。
【００３０】
次に、一種類目の駆動装置３は、図１０及び図１６に示すように直付型タービンポンプによる水陸両用のものであって、プラスチックによりブロック状に形成された筐体部３７を備えている。筐体部３７の下面中央部には水流出路３５の一部に嵌入する嵌入部３８が形成され、筐体部３７の下面周縁にはフランジ部３９が形成されている。そして、フランジ部３９に係合する係合部４０を備えたネジ部材４１を連結部材１３のネジ３１に螺合させることにより、連結部材１３に駆動装置３が脱着自在に接続される。
【００３１】
嵌入部３８から筐体部３７内に凹設された取付凹部４２には電動モータ４３が下向きに取り付けられ、電動モータ４３の回転軸には羽根車４４が取り付けられている。４５は前記ストッパ２０の凹部２１に受けられる羽根車４４の軸である。電動モータ４３が作動すると、羽根車４４はインナケース１２の上端開口部の直ぐ上で回転し、インナケース１２内で浄化された処理水を吸い上げて水流出路３５に送り出す方向の水流を作る。この水流により、前記水路全体で水の移動が生じる。
【００３２】
次に、二種類目の駆動装置４は、図１１及び図１７に示すように外付型エアポンプ４８を用いるものであって、該外付型エアポンプ４８とエアホース４９とエア導入部材５０と水・エア吹出部材６０とで構成される。
【００３３】
エア導入部材５０は、プラスチックによりＬ字状に形成されたパイプ部５１を備え、水流出路３５の一部に嵌入されるパイプ部５１の一端部の外周にはフランジ部５２が形成されている。そして、フランジ部５２に係合する係合部５３を備えたネジ部材５４を連結部材１３のネジ３３に螺合させることにより、連結部材１３にエア導入部材５０が脱着自在に接続される。パイプ部５１の一端部には多孔性のエア噴出部材５５が取り付けられ、エア噴出部材５５はインナケース１２の上端開口部の直ぐ上に位置する。パイプ部５１の他端（上端）部にはホース接続体５６がネジ部材５７によって脱着自在に接続され、ホース接続体５６に突設されたチューブ部５８にエアホース４９が差し込まれる。
【００３４】
水・エア吹出部材６０は、プラスチックによりブロック状に形成された筐体部６１を備えている。筐体部６１の下面中央部には水流出路３５の一部に嵌入する嵌入部６２が形成され、筐体部６１の下面周縁にはフランジ部６３が形成されている。そして、フランジ部６３に係合する係合部６４を備えたネジ部材６５を連結部材１３のネジ３１に螺合させることにより、連結部材１３に水・エア吹出部材６０が脱着自在に接続される。嵌入部６２から筐体部６１内を貫通した取付穴６６には、相互にスライドすることで長さ調節可能な二重管構造の可変長パイプ部６７が取り付けられ、その上端には横向きに開口する吹出口体６８が取り付けられている。
【００３５】
この駆動装置４では、外付型エアポンプ４８からエアホース４９を経てエア導入部材５０に供給されたエアが、エア噴出部材５５からエア泡として噴出し、水流出路３５及び可変長パイプ部６７内を上昇することにより、インナケース１２内で浄化された処理水を吸い上げて水流出路３５に送り出す方向の水流を作る。この水流により、前記水路全体で水の移動が生じる。
【００３６】
上記［００３０］〜［００３５］で述べたように、連結部材１３のネジ３１及びネジ３３、駆動装置３のフランジ部３９及びネジ部材４１、駆動装置４のフランジ部５２、ネジ部材５４、フランジ部６３及びネジ部材６５等が、二種類の駆動装置３，４から選択される一種類の駆動装置を濾過容器２に交換自在に接続するための駆動装置接続構造を構成している。
【００３７】
次に、水吸込部材５は、図１２及び図１６に示すように、プラスチックによりラッパ状に形成された吸込体７１と、吸込体７１の開口部に取り付けられた物理濾過材７２とからなる。吸込体７１の基端部には連結部材１３のネジ３２と螺合するネジ７３が形成され、この螺合だけで連結部材１３に水吸込部材５が脱着自在に接続され、水流入路３４と水吸込部材５とが連通する。
【００３８】
次に、水吸込ホース連結部材６は、図１３及び図１８に示すように、プラスチックによりＬ字状に形成されたパイプ部７５を備え、水流入路３４の一部に嵌入されるパイプ部７５の一端部の外周にはフランジ部７６が形成されている。そして、フランジ部７６に係合する係合部７７を備えたネジ部材７８を連結部材１３のネジ３２に螺合させることにより、連結部材１３に水吸込ホース連結部材６が脱着自在に接続される。パイプ部７５の他端（上端）部にはホース接続体７９がネジ部材８０によって脱着自在に接続され、ホース接続体７９に水吸込ホース８２が差し込まれる。８１はホース接続体７９の途中に設けられた流量調整コックである。
【００３９】
上記［００３７］〜［００３８］で述べたように、連結部材１３のネジ３２、水吸込部材５のネジ７３、水吸込ホース連結部材６のフランジ部７６及びネジ部材７８等が、水吸込部材５又は水吸込ホース連結部材６から選択される一方を濾過容器２に交換自在に接続するための水吸込部接続構造を構成している。
【００４０】
次に、水吹出部材７は、図１４及び図１６に示すように、プラスチックによりＬ字状に形成されたパイプ部８４を備え、水流出路３５の一部に嵌入されるパイプ部８４の一端部の外周にはフランジ部８５が形成されている。そして、フランジ部８５に係合する係合部８６を備えたネジ部材８７を連結部材１３のネジ３３に螺合させることにより、連結部材１３に水吹出部材７が脱着自在に接続される。パイプ部８４の他端（上端）部にはパイプ接続体８８がネジ部材８９によって脱着自在に接続されている。パイプ接続体８８には、相互にスライドすることで長さ調節可能な二重管構造の可変長パイプ部９０が取り付けられ、その上端には横向きに開口する吹出口体９１が取り付けられている。
【００４１】
次に、水吹出ホース連結部材８は、図１５及び図１８に示すように、プラスチックによりＬ字状に形成されたパイプ部９２を備え、水流出路３５の一部に嵌入されるパイプ部９２の一端部の外周にはフランジ部９３が形成されている。そして、フランジ部９３に係合する係合部９４を備えたネジ部材９５を連結部材１３のネジ３３に螺合させることにより、連結部材１３に水吹出ホース連結部材８が脱着自在に接続される。パイプ部９２の他端（上端）部にはホース接続体９６がネジ部材９７によって脱着自在に接続され、ホース接続体９６に水吹出ホース９９が差し込まれる。９８はホース接続体９６の途中に設けられた流量調整コックである。
【００４２】
上記［００４０］〜［００４１］で述べたように、連結部材１３のネジ３３、水吹出部材７のフランジ部８５及びネジ部材８７、水吹出ホース連結部材８のフランジ部９３及びネジ部材９５等が、水吹出部材７又は水吹出ホース連結部材８から選択される一方を濾過容器２に交換自在に接続するための水吹出部接続構造を構成している。
【００４３】
以上のように構成された本実施形態の水槽用濾過装置１は、図１〜図６に示すように、駆動装置の種類と設置場所を自在に変更して使用でき、これらを順に説明する。
【００４４】
（１−１）飼育する生体の主体が水草であるために、直付型タービンポンプによる内部式濾過装置として使用するときには、図１６に示すように、濾過容器２の連結部材１３に、駆動装置３と水吸込部材５と水吹出部材７とを接続し、図１に示すように、この水槽用濾過装置１を水槽１００の内部に水Ｗに浸漬した状態で設置する。
【００４５】
駆動装置３の電源コード４６を商用電源に接続して電動モータ４３を作動させると、羽根車４４の回転により前記水流が作られるので、水槽１００内の水Ｗは、未処理水として水吸込部材５から吸込まれ、物理濾過材７２でごみ等が取り除かれたうえで水流入路３４に流入する。水流入路３４に流入した未処理水は、ケース１１，１２間の空間２２を経て、通水性支持底面部１５からインナケース１２内へ流入し、濾過材１９を通ることにより浄化された処理水に変わり、インナケース１２の上端開口部から水流出路３５へと送り出され、水吹出部材７の吹出口体９１から水槽１００内へ吹出される。
【００４６】
（１−２）飼育する生体の主体が鑑賞魚であるために、外付型エアポンプによる内部式濾過装置として使用するときには、図１７に示すように、濾過容器２の連結部材１３に、駆動装置４（外付型エアポンプ４８、エアホース４９、エア導入部材５０及び水・エア吹出部材６０）と水吸込部材５とを接続し、図２に示すように、この水槽用濾過装置１を水槽１００の内部に水Ｗに浸漬した状態で設置する（外付型エアポンプ４８は水槽外に設置する）。
【００４７】
外付型エアポンプ４８を作動させると、エア噴出部材５５から噴出したエア泡の上昇により前記水流が作られるので、水槽１００内の水Ｗは、上記（１−１）と同様に未処理水として水吸込部材５から吸込まれ、同様の水路を経て水流出路３５へと送り出され、エア泡とともに水・エア吹出部材６０の吹出口体６８から水槽１００内へ吹出される。
【００４８】
（２）水槽内のレイアウトを特に重視するために、直付型タービンポンプによる外部式濾過装置として使用するときは、図１８に示すように、濾過容器２の連結部材１３に、駆動装置３と水吸込ホース連結部材６と水吹出ホース連結部材８とを接続し、図３に示すように、この水槽用濾過装置１を水槽１００の外部に水Ｗに浸漬しない状態で設置する。水吸込ホース連結部材６に水吸込ホース８２を接続し、水吸込ホース８２の先端に取り付けた物理濾過材１０１を水槽１００内に沈める。また、水吹出ホース連結部材８に水吹出ホース９９を接続し、水吹出ホース９９の先端を水槽１００内の水面上に配置する。
【００４９】
電動モータ４３を作動させると、羽根車４４の回転により前記水流が作られるので、水槽１００内の水Ｗは、未処理水として物理濾過材１０１から吸込まれ、上記（１−１）と同様の水路を経て水流出路３５へと送り出され、水吹出ホース９９から水槽１００内へ吹出される。
【００５０】
（３）また、図４、図５及び図６に示すように、水槽用濾過装置１を二台（又はそれ以上）連結して使用することもできる。
【００５１】
図４は、二台の水槽用濾過装置１を直付型タービンポンプによる内部式濾過装置として使用するときの正面図である。右側の水槽用濾過装置１においては、濾過容器２の連結部材１３に、駆動装置３と装置間連結部材１１１と水吹出ホース連結部材８とを接続する。左側の水槽用濾過装置１においては、濾過容器２の連結部材１３に、駆動装置に代わる上部栓１２０と水吸込部材５と装置間連結部材１１１とを接続する。
【００５２】
各々の装置間連結部材１１１は、図１９に示すように、水流入路３４又は水流出路３５の一部に嵌入されるパイプ部１１２を備え、パイプ部１１２の途中部の外周にはフランジ部１１３が形成されている。そして、フランジ部１１３に係合する係合部１１４を備えたネジ部材１１５を連結部材１３のネジ３２又はネジ３３に螺合させることにより、連結部材１３に装置間連結部材１１１を脱着自在に接続する。両装置間連結部材１１１を連結ホース１１６で連結し、連結ホース１１６をネジ部材１１７で締め付ける。上部栓１２０は、図２０に示すように、駆動装置３の場合と同様のネジ部材４１により、連結部材１３に脱着自在に接続する。そして、連結した二台の水槽用濾過装置１を、水槽１００の内部に水Ｗに浸漬した状態で設置する。
【００５３】
図５は、二台の水槽用濾過装置１を外付型エアポンプによる内部式濾過装置として使用するときの正面図である。右側の水槽用濾過装置１においては、濾過容器２の連結部材１３に、駆動装置４（外付型エアポンプ４８、エアホース４９、エア導入部材５０及び水・エア吹出部材６０）と装置間連結部材１１１とを接続する。左側の水槽用濾過装置１においては、濾過容器２の連結部材１３に、駆動装置に代わる上部栓１２０と水吸込部材５と装置間連結部材１１１とを接続する。両装置間連結部材１１１を連結ホース１１６で連結し、連結した二台の水槽用濾過装置１を、水槽１００の内部に水Ｗに浸漬した状態で設置する。
【００５４】
図６は、二台の水槽用濾過装置１を内部式濾過装置と外部式濾過装置との組合わせとして使用するときの正面図である。右側の水槽用濾過装置１においては、濾過容器２の連結部材１３に、駆動装置３と水吸込ホース連結部材６と水吹出ホース連結部材８とを接続し、該水槽用濾過装置１を水槽１００の外部に設置する。左側の水槽用濾過装置１においては、濾過容器２の連結部材１３に、駆動装置に代わる上部栓１２０と水吸込ホース連結部材６と水吹出ホース連結部材８とを接続し、該水槽用濾過装置１を水槽１００の内部に設置する。そして、左側の水吹出ホース連結部材８と右側の水吸込ホース連結部材６とを水吸込ホース８２で連結し、左側の水吸込ホース連結部材６に接続した水吸込ホース１１８の下端を水槽１００の底部に配置する。
【００５５】
なお、図５の外付型エアポンプ４８による内部式濾過装置を水槽１００内で連結して使用するという方法は、従来の外付型エアポンプによる内部式濾過装置では、吸込口の構造上、不可能であった。しかし、本発明における外付型エアポンプ４８による内部式濾過装置では、水吸込部材５、エア導入部材５０、水・エア吹出部材６０等の接続構造やインナケースによる二重構造等を工夫することにより連結が可能となり、水槽用濾過装置１を二台（又はそれ以上）連結した状態で、水槽１００の内部で使用できるようになった。
【００５６】
上記のように水槽用濾過装置１を二台（又はそれ以上）連結する主なメリットとして、下記のことが考えられる。
▲１▼ 一台のみの場合よりも濾過材１９が多く使用できるため、高い濾過能力が得られる。
▲２▼ 各々のインナケース１２内に一種類のみならず、数種類の濾過材１９を収容できるため、使用者の目的に合った水の状態が得られる。
【００５７】
次に、図２１及び図２２は濾過容器２の変更例を示し、前記インナケース１２を設けないように変更した点において、前記実施形態と相違するものである。従って、相違部分についてのみ説明し、前記実施形態との共通部分については共通符号を図面に付して説明を省略する。
【００５８】
本変更例の濾過容器２は、アウタケース１１と、該アウタケース１１内に同心状に挿入される導出パイプ１２１と、該アウタケース１１及び導出パイプ１２１の上端開口部に脱着自在に接続される連結部材１３と、該導出パイプ１２１の下端開口部に連結される傘状の通水性支持部材１２５とからなる。このため、濾過容器２を最少限の部品で分解可能に構成でき、濾過材の交換や洗浄も容易にできる。アウタケース１１と導出パイプ１２１と通水性支持部材１２５との間に大きく形成される空間１２８には、多量の濾過材１９が収容されている。連結部材１３の水流入路３４は空間１２８に連通し、水流出路３５は導出パイプ１２１の上端開口部に連通する。
【００５９】
導出パイプ１２１は、プラスチックにより形成されて相互にスライド可能に挿込接続されるパイプ上部１２２とパイプ下部１２３とから構成されている。パイプ上部１２２の上端開口部の外周には連結部材１３のネジ２３と螺合するネジ１２４が形成され、この螺合だけで連結部材１３にパイプ上部１２２が脱着自在に接続されている。
【００６０】
通水性支持部材１２５は、プラスチックにより一体形成された傘状スリット部１２６とその中心の接続パイプ部１２７とから構成され、接続パイプ部１２７がパイプ下部１２３に脱着可能に挿込接続されている。傘状スリット部１２６は、その周縁部においてアウタケース１１の内底面に当接し、濾過材１９を受け支えながら水の通過を可能にしている。また、傘状としたことで、空間１２８を最大限に大きくすることができ、もって濾過材１９の充填量を最大限に増やすことができる。
【００６１】
パイプ上部１２２（パイプ下部１２３でも可）にはプラスチックにより形成されたストッパ１３０が脱着可能に外挿され、濾過材１９の流出を防止するようになっている。ストッパ１３０は、導出パイプ１２１のふらつき（特に、パイプ上部１２２とパイプ下部１２３との接合部のふらつき）を防止するために、アウタケース１１の内周面に当接するリング部１３１と該リング部１３１を支える平面十字のスポーク部１３２とを備えている。なお、導出パイプ１２１、通水性支持部材１２５及びストッパ１３０の素材は、プラスチックに限定されず、ガラス、セラミックス等でもよい。
【００６２】
以上の構造により、濾過容器２には、水流入路３４→空間１２８内の濾過材１９→通水性支持部材１２５→導出パイプ１２１→水流出路３５、という水路が形成される。
【００６３】
本変更例の濾過容器２は、前記実施形態と同様、二種類の駆動装置３，４、水吸込部材５、水吸込ホース連結部材６、水吹出部材７、及び水吹出ホース連結部材８を交換自在に接続することにより、前記実施形態で説明した（１−１）（１−２）（２）（３）の水槽用濾過装置１を構成することができ、実質的に同様の作用・効果を奏する。
【００６４】
前記実施形態と相違するのは、濾過材１９が、インナケース１２内ではなく、アウタケース１１と導出パイプ１２１と通水性支持部材１２５との間に形成される空間１２８内に収容されていることに起因する点のみである。従って、この点に関して、前記実施形態の「インナケース１２」を本変更例では「空間１２８」と読み替えることにより、前記実施形態の説明を援用できる。すなわち、水流入路３４に流入した未処理水は、アウタケース１１と導出パイプ１２１と通水性支持部材１２５との間に形成される空間１２８内の濾過材１９に流入し、濾過材１９を通ることにより浄化された処理水に変わり、傘状スリット部１２６を経て、導出パイプ１２１に流入・上昇し、導出パイプ１２１の上端開口部から水流出路３５へと送り出される。
【００６５】
さらに、本変更例には、前記実施形態と比べて次のような利点がある。すなわち、アウタケース１１と導出パイプ１２１と通水性支持部材１２５との間に形成される空間１２８には、前記実施形態のインナケース１２内よりも、多くの濾過材１９が収容可能となる。また、一種類のみならず、二種類以上の濾過材１９を収容することもできるため、使用者の目的にさらに細かく合った水の状態が得られる。
【００６６】
なお、本発明は前記実施形態に限定されるものではなく、例えば以下のように、発明の趣旨から逸脱しない範囲で適宜変更して具体化することもできる。
（１）濾過容器２の各部の形状、構造、部品点数等を変更すること。
（２）駆動装置接続構造、水吸込部接続構造及び水吹出部接続構造の形状、構造等を変更すること。
【００６７】
【発明の効果】
以上詳述したように、請求項１の発明に係る水槽用濾過装置によれば、飼育する生体の主体等の諸理由から、駆動装置の種類を変更したいときに、濾過容器を共通部品にして最少限の交換部品と費用で合理的かつ経済的に変更でき、使用しなくなった部品を部品単位で小さい収納スペースに収納できるようになる。
【００６８】
請求項２の発明に係る水槽用濾過装置によれば、水槽内のレイアウト、設置スペース等の諸理由から、設置場所を内部式と外部式との間で変更したりしたいときに、濾過容器を共通部品にして最少限の交換部品と費用で合理的かつ経済的に変更でき、使用しなくなった部品を部品単位で小さい収納スペースに収納できるようになる。
【００６９】
請求項３の発明に係る水槽用濾過装置によれば、飼育する生体の主体、水槽内のレイアウト、設置スペース等の諸理由から、駆動装置の種類を変更したり、設置場所を内部式と外部式との間で変更したりしたいときに、濾過容器を共通部品にして最少限の交換部品と費用で合理的かつ経済的に変更でき、使用しなくなった部品を部品単位で小さい収納スペースに収納できるようになる。
【００７０】
上記効果に加え、請求項４の発明に係る水槽用濾過装置によれば、濾過容器と駆動装置との間からの水漏れを防止することができる。
【００７１】
また、請求項５の発明に係る水槽用濾過装置によれば、濾過容器と水吸込部材又は水吸込ホース連結部材との間からの水漏れ、及び、濾過容器と水吹出部材又は水吹出ホース連結部材との間からの水漏れを防止することができる。
【００７２】
また、請求項６の発明に係る水槽用濾過装置によれば、濾過容器を最少限の部品で分解可能に構成することができ、濾過材の交換や洗浄等のメンテナンスを容易に行うことができる。
【００７３】
さらに、請求項７の発明に係る水槽用濾過装置によれば、インナケースからの濾過材の流出を防止することができる。
【００７４】
また、請求項８又は９の発明に係る水槽用濾過装置によれば、濾過容器を最少限の部品で分解可能に構成することができ、濾過材の交換や洗浄等のメンテナンスを容易に行うことができるだけでなく、濾過容器に収容可能な濾過材の量又は種類を増やすことができる。
【００７５】
さらに、請求項１０の発明に係る水槽用濾過装置によれば、濾過容器からの濾過材の流出を防止することができる。
【００７６】
さらに、請求項１１の発明に係る水槽用濾過装置によれば、導出パイプのふらつきを防止することができる。
【００７７】
さらに、請求項１２の発明に係る水槽用濾過装置によれば、アウタケースに付着した藻類を容易に除去でき、アウタケースに傷が付きにくく、また、濾過容器を安定的に設置できる。
【図面の簡単な説明】
【図１】本発明の実施形態に係る濾過装置を直付型タービンポンプによる内部式濾過装置として使用するときの正面図である。
【図２】同濾過装置を外付型エアポンプによる内部式濾過装置として使用するときの正面図である。
【図３】同濾過装置を直付型タービンポンプによる外部式濾過装置として使用するときの正面図である。
【図４】同濾過装置を二台連結して直付型タービンポンプによる内部式濾過装置として使用するときの正面図である。
【図５】同濾過装置を二台連結して外付型エアポンプによる内部式濾過装置として使用するときの正面図である。
【図６】同濾過装置を二台連結して内部式濾過装置と外部式濾過装置との組合わせとして使用するときの正面図である。
【図７】同濾過装置の濾過容器の断面図である。
【図８】同濾過容器のインナケースの斜視図である。
【図９】同濾過容器の蓋体の斜視図である。
【図１０】同濾過装置の直付型タービンポンプによる駆動装置の断面図である。
【図１１】同濾過装置の外付型エアポンプによる駆動装置の断面図である。
【図１２】同濾過装置の水吸込部材の断面図である。
【図１３】同濾過装置の水吸込ホース連結部材の断面図である。
【図１４】同濾過装置の水吹出部材の断面図である。
【図１５】同濾過装置の水吹出ホース連結部材の断面図である。
【図１６】同濾過装置を直付型タービンポンプによる内部式濾過装置としたときの断面図である。
【図１７】同濾過装置を外付型エアポンプによる内部式濾過装置としたときの断面図である。
【図１８】同濾過装置を直付型タービンポンプによる外部式濾過装置としたときの断面図である。
【図１９】同濾過装置同士を連結する装置間連結部材の断面図である。
【図２０】同濾過装置の上部栓の断面図である。
【図２１】前記実施形態の濾過容器の変更例を示す断面図である。
【図２２】同濾過容器の導出パイプ、通水性支持部材及びストッパの斜視図である。
【符号の説明】
１水槽用濾過装置
２濾過容器
３駆動装置
４駆動装置
５水吸込部材
６水吸込ホース連結部材
７水吹出部材
８水吹出ホース連結部材
１１アウタケース
１２インナケース
１３連結部材
１９濾過材
２０ストッパ
２２空間
３１ネジ
３２ネジ
３３ネジ
４１ネジ部材
４８外付型エアポンプ
５０エア導入部材
５４ネジ部材
６０水・エア吹出部材
６５ネジ部材
７３ネジ
７８ネジ部材
８７ネジ部材
９５ネジ部材
１００水槽
１２１導出パイプ
１２５通水性支持部材
１２８空間
１３０ストッパ
Ｗ水[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a filtration device that is installed inside or outside a tank for breeding appreciation fish, aquatic plants, and the like, and sucks and circulates the water in the tank.
[0002]
[Prior art]
This type of general filtering device is classified as follows according to the installation location and the driving device, and is selectively used according to the type of living body to be bred.
[0003]
(1) So-called internal filter installed in a water tank soaked in water: Furthermore, there are the following two types of internal filter depending on the drive device that creates a water flow.
[0004]
(1-1) Drive device using a direct-attached turbine pump that rotates the impeller to create a water flow: The internal filter using the drive device uses the following external air pump as the drive device Since the rise of the air bubbles that occur does not occur, the escape of carbon dioxide from the inside of the aquarium can be avoided, so it is used for aquariums mainly composed of aquatic plants that require carbon dioxide for growth.
[0005]
(1-2) Drive device that creates a water flow by the rise of air bubbles supplied from an external air pump: The internal filtration device using the drive device has a high oxygen supply capacity. Used for.
[0006]
(2) A so-called external filter installed outside the water tank without being immersed in water: This external filter uses a direct turbine turbine drive that rotates the impeller to create a water flow. It is used when the emphasis is on the layout in the aquarium and it is not desired to impair the beauty as much as possible.
[0007]
[Problems to be solved by the invention]
By the way, the three types of filtration devices (1-1), (1-2), and (2) all had advantages and disadvantages.
[0008]
In other words, (1-1) (1-2) internal filter is installed in the aquarium, so there is no need for installation space outside the aquarium, or it is difficult to make dead water because water can be circulated efficiently. There is an advantage. However, algae are likely to adhere to the surface and inside of the filtration device and the cord surface, and maintenance such as removal and cleaning of the device is troublesome, and depending on the type of living body, it may be damaged by contact with the device, There is a disadvantage that it detracts from the beauty of the inside.
[0009]
On the other hand, the external filtration device (2) has the advantages that the living body is not damaged and that the layout in the water tank can be enjoyed without being disturbed by the device. However, since many conventional external filtration devices are fitted with a drive device and a filtration container, water may overflow from the device if the device is not properly assembled. In addition, when a filtering material or water enters the filtering device, the weight is very increased, and the burden on a person when moving or carrying is increased. Moreover, since this filtration apparatus incorporates a siphon type mechanism, water does not circulate unless it is installed below the water surface of the water tank. Therefore, when installing a water tank using this filtration device, it is necessary to purchase a special shelf and install a water tank in the upper stage and a filtration device in the lower stage, resulting in more space and cost than necessary. It takes.
[0010]
The most problematic point is that the three types of filtration devices have a structure that cannot be changed mutually. For example, when a person who has used the internal filtration device with the direct-attached turbine pump of (1-1) wants to change the subject of the living organism from aquatic plants to appreciation fish and make a filtration method suitable for the breeding Since the device (1-1) could not be changed to the internal filtration device using the external air pump (1-2), a new device (1-2) had to be purchased. The same applies to the reverse case. In addition, due to the layout and installation space in the aquarium, there was a similar problem when it was desired to change between the internal expression (1-1) (1-2) and the external expression (2). . As a result, the user has to purchase several types of filtration devices, which is uneconomical and also requires a large storage space for storing the entire filtration device that is no longer used.
[0011]
Therefore, the object of the present invention is to solve the above-mentioned problems, change the type of drive device for various reasons such as the main body of the living organism, layout in the aquarium, installation space, etc. When you want to change between the two, you can make the filtration container a common part and change it reasonably and economically with the minimum number of replacement parts and costs, and you can store the parts you no longer use in a small storage space in parts It is providing the filtration apparatus for water tanks.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes a filtration container that can contain (fill) a filter medium and allow water to flow in and out, and a drive device that creates a water flow in the filtration container, In a water tank filtration device that purifies by passing through a filter medium and returns the treated water into the water tank, the following measures were taken.
[0013]
(1) A drive device connection structure for connecting a filtration container and two or more types of drive devices as separate parts, and connecting one type of drive device selected from the two or more types of drive devices to the filtration container in a replaceable manner. Was provided.
[0014]
(2) The water suction member that opens into the filtration container and the water tank and the water suction hose connection member that connects the water suction hose that extends into and out of the water tank are separate parts, and are selected from the water suction member or the water suction hose connection member A water suction connection structure for connecting one side to the filtration container in a replaceable manner is provided, and a water blowing hose connecting member for connecting the filtration container, a water blowing member that opens into the water tank, and a water blowing hose that extends into and out of the water tank. As a separate part, a water blower connection structure for exchanging one selected from the water blower member or the water blower hose connecting member to the filtration container is provided.
[0015]
(3) Provided with a drive device connection structure for connecting a filtration container and two or more types of drive devices as separate parts, and for connecting one type of drive device selected from two or more types of drive devices to the filtration container in a replaceable manner. The water suction member that opens into the filtration container and the water tank and the water suction hose connection member that connects the water suction hose extended inside and outside the water tank are separate parts, and one selected from the water suction member or the water suction hose connection member A water suction part connection structure for connecting to the filtration container interchangeably is provided, and the water blowing hose connecting member for connecting the water blowing hose extending inside and outside of the water tank and the water blowing hose connecting member extending inside and outside the water tank are separate parts. And a water outlet connection structure for connecting one selected from the water outlet member or the water outlet hose coupling member to the filtration container in a replaceable manner.
[0016]
Here, the “drive device connection structure”, “water suction part connection structure”, and “water outlet connection structure” are not limited to specific structures as long as each member can be connected interchangeably, and screw screws are not limited. A structure using a joint, a chuck structure, a bayonet structure, a tightening band structure, and the like can be exemplified. Among these, a structure using screw screwing is preferable. This is because the structure using the screw engagement is superior in assembly reliability and sealing performance as compared with the conventional fitting type, so that there is no possibility of water overflowing from the apparatus.
[0017]
In addition, the “filtration container” includes an outer case, an inner case that is inserted into the outer case with a space and accommodates a filtering material, an opening of the outer case, and an opening of the inner case. It can be exemplified by a connecting member that is connected to allow water to pass through a filter medium in the inner case through a space between the outer case and the inner case.
[0018]
In the case of this example, it is preferable to provide a stopper for preventing the filter medium from flowing out at the opening of the inner case.
[0019]
Further, as another “filtration container”, the outer case, the outlet pipe inserted into the outer case with a space, the opening of the outer case and the opening of the outlet pipe are detachably connected. An example is one in which a connecting member is included and water is allowed to flow through a filter medium accommodated in a space between the outer case and the outlet pipe and then flowed into the outlet pipe.
[0020]
In the case of this example, it is preferable to connect a water-permeable support member that contacts the inner bottom surface of the outer case and supports the filter medium to the outlet pipe. Moreover, it is preferable to provide the outlet pipe with a stopper that prevents the filter medium from flowing out. This stopper is preferably in contact with the inner surface of the outer case to prevent the lead-out pipe from wobbling.
[0021]
In addition, even if the filtration container has another structure, it is preferable to provide a stopper that prevents the filtration material from flowing out of the filtration container.
[0022]
The material of the outer case and the inner case is not particularly limited, but is preferably made of glass (particularly the outer case).
[0023]
The type of “driving device” is not particularly limited, but it may be a direct-attached turbine pump that rotates the impeller to create a water flow, or a device that creates a water flow by raising the air bubbles supplied from an external air pump. It can be illustrated. The turbine pump is preferably amphibious (that can be installed both in water and in air).
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a water tank filtration device embodying the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 6, the water tank filtration device 1 of the present embodiment accommodates a filtering material and allows water to enter and exit in order to be able to be used by changing the type and installation location of the drive device. Water suction hose connection that connects the filtration container 2, two types of driving devices 3 and 4 that flow the water in the filtration container 2, a water suction member 5 that opens into the water tank, and a water suction hose that extends into and out of the water tank A member 6, a water blowing member 7 that opens into the water tank, and a water blowing hose connecting member 8 that connects a water blowing hose that extends into and out of the water tank are provided as separate parts. Details and relationships of these components will be described in order.
[0025]
First, as shown in FIGS. 7, 8, and 9, the filtration container 2 includes an outer case 11, an inner case 12 that is concentrically inserted into the outer case 11, and the outer case 11 and the inner case 12. And a connecting member 13 that is detachably connected to the upper end opening. For this reason, the filtration container 2 can be configured to be disassembled with the minimum number of parts, and the filter medium can be easily replaced and cleaned.
[0026]
As shown in FIG. 7, the outer case 11 is formed in a bottomed cylindrical shape with glass, and a screw 14 is formed in an upper end opening connected to the connecting member 13. The material of the outer case 11 is not limited to glass and may be plastic, ceramics, etc., but glass is preferred. Compared to a plastic case, a glass case can be easily removed when algae adhere to the inside and outside of the case, and even if the surface of the case is rubbed hard with a scrub or the like, it is less likely to be damaged. In addition, since the glass case has a large specific gravity, it can be stably installed without being overturned by simply placing it on the bottom of the water, and the troublesomeness of mounting with a fixing device such as kiss rubber is eliminated.
[0027]
As shown in FIGS. 7 and 8, the inner case 12 includes a slit-like water-permeable support bottom portion 15, a cylindrical portion 16, and an upper reduced diameter portion 17 that are made of plastic and can be attached to and detached from each other. A screw 18 is formed at the upper end opening of the upper reduced diameter portion 17 connected to the member 13. The material of the inner case 12 is not limited to plastic, and may be glass, ceramics, or the like. Various types of filter media 19 that can be selected as appropriate are accommodated in the cylindrical portion 16, and the water-permeable support bottom surface portion 15 allows water to pass through while supporting the filter media 19. In addition, the water-permeable support bottom surface portion 15 can be detached from the cylindrical portion 16, and the filter medium 19 is accommodated and taken out during cleaning by removing this portion. Also, a planar cross stopper 20 for preventing the filtering material 19 from flowing out is inserted in the upper end opening of the inner case 12, and a concave portion 21 for receiving the shaft of the impeller, which will be described later, is inserted in the center of the stopper 20. Is provided.
[0028]
As shown in FIGS. 7 and 9, the connecting member 13 is formed in a block shape from plastic. A screw 23 that is screwed with the screw 18 of the inner case 12 is formed at the center of the lower surface of the connecting member 13, and the inner case 12 is detachably connected to the connecting member 13 only by this screwing. An annular fitting portion 24 that fits into the upper end opening of the outer case 11 and a flange portion 26 that engages with the upper end of the outer case 11 via an O-ring 25 are formed on the outer periphery of the lower end of the connecting member 13. . Then, by screwing a screw member 28 having an engaging portion 27 that engages with the flange portion 26 to the screw 14 of the outer case 11, the outer case 11 is detachably connected to the connecting member 13, and O The ring 25 prevents flooding. When the outer case 11 and the inner case 12 are connected to the connecting member 13 in this way, a space 22 is formed between the peripheral walls and the bottom walls of the cases 11 and 12.
[0029]
A screw 31, a screw 32, and a screw 33 are formed on the upper end portion, one side portion, and the other side portion of the connecting member 13, respectively. screw 32 A water inflow passage 34 communicating with the space 22 between the cases 11 and 12 is provided through the center of the connecting member 13 to the lower surface of the connecting member 13. Further, a water outflow passage 35 communicating with the upper end opening of the inner case 12 is provided through from the center of the screw 23 to the center of the screw 31 and the screw 33. With this structure, a water channel is formed in the order of the water inflow channel 34 → the space 22 → the water-permeable support bottom part 15 → the filter medium 19 in the inner case 12 → the water outflow channel 35.
[0030]
Next, as shown in FIG. 10 and FIG. 16, the first type of driving device 3 is an amphibious unit using a direct-attached turbine pump, and includes a casing portion 37 formed in a block shape with plastic. Yes. A fitting portion 38 that fits into a part of the water outflow passage 35 is formed at the center of the lower surface of the housing portion 37, and a flange portion 39 is formed at the periphery of the lower surface of the housing portion 37. Then, the drive device 3 is detachably connected to the connecting member 13 by screwing the screw member 41 having the engaging portion 40 engaged with the flange portion 39 into the screw 31 of the connecting member 13.
[0031]
An electric motor 43 is attached downward to an attachment recess 42 provided in the housing portion 37 from the fitting portion 38, and an impeller 44 is attached to a rotating shaft of the electric motor 43. Reference numeral 45 denotes a shaft of an impeller 44 that is received in the concave portion 21 of the stopper 20. When the electric motor 43 is actuated, the impeller 44 rotates immediately above the upper end opening of the inner case 12 and creates a water flow in a direction in which the treated water purified in the inner case 12 is sucked and sent to the water outflow path 35. This water flow causes water movement throughout the channel.
[0032]
Next, the second type of driving device 4 uses an external air pump 48 as shown in FIGS. 11 and 17, and includes the external air pump 48, an air hose 49, an air introduction member 50, water, And an air blowing member 60.
[0033]
The air introduction member 50 includes a pipe portion 51 formed of plastic in an L shape, and a flange portion 52 is formed on the outer periphery of one end portion of the pipe portion 51 that is fitted into a part of the water outflow path 35. Then, the air introduction member 50 is detachably connected to the connecting member 13 by screwing the screw member 54 having the engaging portion 53 engaged with the flange portion 52 into the screw 33 of the connecting member 13. A porous air ejection member 55 is attached to one end portion of the pipe portion 51, and the air ejection member 55 is positioned immediately above the upper end opening of the inner case 12. A hose connector 56 is detachably connected to the other end (upper end) of the pipe portion 51 by a screw member 57, and an air hose 49 is inserted into a tube portion 58 protruding from the hose connector 56.
[0034]
The water / air blowing member 60 includes a housing portion 61 formed in a block shape from plastic. A fitting portion 62 that fits into a part of the water outflow passage 35 is formed at the center of the lower surface of the housing portion 61, and a flange portion 63 is formed at the periphery of the lower surface of the housing portion 61. Then, by screwing the screw member 65 having the engaging portion 64 that engages with the flange portion 63 into the screw 31 of the connecting member 13, the water / air blowing member 60 is detachably connected to the connecting member 13. . A variable-length pipe portion 67 having a double-pipe structure whose length can be adjusted by sliding with respect to each other is attached to an attachment hole 66 penetrating from the fitting portion 62 into the housing portion 61, and a laterally open opening at the upper end thereof. A blower outlet 68 is attached.
[0035]
In this driving device 4, the air supplied from the external air pump 48 to the air introduction member 50 through the air hose 49 is ejected as air bubbles from the air ejection member 55, and rises in the water outflow path 35 and the variable length pipe portion 67. By doing this, the water in the direction in which the treated water purified in the inner case 12 is sucked up and sent to the water outflow path 35 is created. This water flow causes water movement throughout the channel.
[0036]
As described in the above [0030] to [0035], the screw 31 and the screw 33 of the connecting member 13, the flange portion 39 and the screw member 41 of the driving device 3, the flange portion 52 of the driving device 4, the screw member 54, and the flange portion. 63, the screw member 65, and the like constitute a drive unit connection structure for connecting one type of drive unit selected from the two types of drive units 3 and 4 to the filtration container 2 in a replaceable manner.
[0037]
Next, as shown in FIGS. 12 and 16, the water suction member 5 includes a suction body 71 formed in a trumpet shape with plastic and a physical filter material 72 attached to an opening of the suction body 71. A screw 73 that engages with the screw 32 of the connecting member 13 is formed at the base end of the suction body 71, and the water suction member 5 is detachably connected to the connecting member 13 only by this screwing. The water suction member 5 communicates.
[0038]
Next, as shown in FIGS. 13 and 18, the water suction hose connecting member 6 includes a pipe portion 75 that is formed in an L shape from plastic, and the pipe portion 75 that is fitted into a part of the water inflow path 34. A flange portion 76 is formed on the outer periphery of the one end portion. Then, the water suction hose connecting member 6 is detachably connected to the connecting member 13 by screwing the screw member 78 having the engaging portion 77 engaging with the flange portion 76 to the screw 32 of the connecting member 13. . A hose connector 79 is detachably connected to the other end (upper end) of the pipe portion 75 by a screw member 80, and a water suction hose 82 is inserted into the hose connector 79. Reference numeral 81 denotes a flow rate adjusting cock provided in the middle of the hose connector 79.
[0039]
As described in the above [0037] to [0038], the screw 32 of the connecting member 13, the screw 73 of the water suction member 5, the flange portion 76 of the water suction hose connecting member 6, the screw member 78, etc. Or the water suction part connection structure for connecting one selected from the water suction hose coupling member 6 to the filtration container 2 interchangeably is comprised.
[0040]
Next, as shown in FIGS. 14 and 16, the water blowing member 7 includes a pipe portion 84 formed in an L shape by plastic, and one end portion of the pipe portion 84 fitted into a part of the water outflow path 35. A flange portion 85 is formed on the outer periphery of the. Then, the water blowing member 7 is detachably connected to the connecting member 13 by screwing the screw member 87 having the engaging portion 86 engaged with the flange portion 85 into the screw 33 of the connecting member 13. A pipe connector 88 is detachably connected to the other end (upper end) of the pipe portion 84 by a screw member 89. A variable-length pipe portion 90 having a double-pipe structure whose length can be adjusted by sliding relative to each other is attached to the pipe connection body 88, and a blower outlet body 91 that opens sideways is attached to the upper end of the pipe connection body 88.
[0041]
Next, as shown in FIGS. 15 and 18, the water blowing hose connecting member 8 includes a pipe portion 92 formed in an L shape by plastic, and the pipe portion 92 that is fitted into a part of the water outflow path 35. A flange portion 93 is formed on the outer periphery of the one end portion. Then, the water blowing hose connecting member 8 is detachably connected to the connecting member 13 by screwing a screw member 95 having an engaging portion 94 that engages with the flange portion 93 to the screw 33 of the connecting member 13. . A hose connector 96 is detachably connected to the other end (upper end) of the pipe portion 92 by a screw member 97, and a water blowing hose 99 is inserted into the hose connector 96. Reference numeral 98 denotes a flow rate adjusting cock provided in the middle of the hose connection body 96.
[0042]
As described in [0040] to [0041] above, the screw 33 of the connecting member 13, the flange portion 85 and the screw member 87 of the water blowing member 7, the flange portion 93 and the screw member 95 of the water blowing hose connecting member 8, and the like. The water blowing part connecting structure for connecting one selected from the water blowing member 7 or the water blowing hose connecting member 8 to the filtration container 2 in a replaceable manner is configured.
[0043]
As shown in FIGS. 1 to 6, the aquarium filtration device 1 of the present embodiment configured as described above can be used by freely changing the type and installation location of the drive device, which will be described in order.
[0044]
(1-1) Since the main body of the living organism is aquatic plants, when used as an internal filtration device with a direct-attached turbine pump, as shown in FIG. 3, the water suction member 5 and the water blowing member 7 are connected, and the water tank filtration device 1 is installed in the water tank 100 in a state of being immersed in water W as shown in FIG.
[0045]
When the power cord 46 of the driving device 3 is connected to a commercial power source and the electric motor 43 is operated, the water flow is created by the rotation of the impeller 44, so that the water W in the water tank 100 is treated as untreated water as a water suction member. 5, the dust and the like are removed by the physical filter medium 72 and then flow into the water inflow path 34. Untreated water that has flowed into the water inflow path 34 flows into the inner case 12 from the water-permeable support bottom surface portion 15 through the space 22 between the cases 11 and 12, and is treated by being purified by passing through the filter medium 19. Instead, the water is sent out from the upper end opening of the inner case 12 to the water outflow passage 35, and blown out from the outlet body 91 of the water blowing member 7 into the water tank 100.
[0046]
(1-2) Since the subject of the living body is an appreciation fish, when used as an internal filtration device using an external air pump, the drive device is connected to the connecting member 13 of the filtration container 2 as shown in FIG. 4 (external air pump 48, air hose 49, air introduction member 50 and water / air blowing member 60) and water suction member 5 are connected, and as shown in FIG. It is installed in a state immersed in water W (the external air pump 48 is installed outside the water tank).
[0047]
When the external air pump 48 is operated, the water flow is created by the rise of the air bubbles ejected from the air ejection member 55, so that the water W in the water tank 100 is treated as untreated water as in (1-1) above. The air is sucked in from the water suction member 5, is sent out to the water outflow passage 35 through the same water passage, and is blown out into the water tank 100 from the outlet body 68 of the water / air blowing member 60 together with the air bubbles.
[0048]
(2) In order to attach great importance to the layout in the aquarium, when used as an external filtration device with a direct-attached turbine pump, as shown in FIG. The water suction hose connecting member 6 and the water blowing hose connecting member 8 are connected, and the water tank filtration device 1 is installed outside the water tank 100 in a state where it is not immersed in the water W as shown in FIG. A water suction hose 82 is connected to the water suction hose connecting member 6, and the physical filter medium 101 attached to the tip of the water suction hose 82 is submerged in the water tank 100. Further, the water blowing hose 99 is connected to the water blowing hose connecting member 8, and the tip of the water blowing hose 99 is disposed on the water surface in the water tank 100.
[0049]
When the electric motor 43 is operated, the water flow is created by the rotation of the impeller 44. Therefore, the water W in the water tank 100 is sucked from the physical filter medium 101 as untreated water and is the same as (1-1) above. It is sent out to the water outflow passage 35 through the water passage, and blown out from the water blow-out hose 99 into the water tank 100.
[0050]
(3) Moreover, as shown in FIG.4, FIG.5 and FIG.6, it can also be used by connecting the two water tank filtration apparatuses 1 (or more).
[0051]
FIG. 4 is a front view when two water tank filtration devices 1 are used as internal filtration devices using a direct-attached turbine pump. In the right water tank filtration apparatus 1, the drive device 3, the inter-device connection member 111, and the water blowing hose connection member 8 are connected to the connection member 13 of the filtration container 2. In the water tank filtration device 1 on the left side, the upper plug 120 instead of the drive device, the water suction member 5 and the inter-device connection member 111 are connected to the connection member 13 of the filtration container 2.
[0052]
As shown in FIG. 19, each inter-device connecting member 111 includes a pipe portion 112 that is fitted into a part of the water inflow passage 34 or the water outflow passage 35, and a flange portion 113 is provided at the outer periphery of the middle portion of the pipe portion 112. Is formed. Then, the inter-device connecting member 111 is detachably connected to the connecting member 13 by screwing the screw member 115 having the engaging portion 114 engaging with the flange portion 113 into the screw 32 or the screw 33 of the connecting member 13. To do. The inter-device connecting member 111 is connected by a connecting hose 116, and the connecting hose 116 is tightened by a screw member 117. As shown in FIG. 20, the upper plug 120 is detachably connected to the connecting member 13 by a screw member 41 similar to the case of the driving device 3. Then, the two connected water tank filtration devices 1 are installed in the water tank 100 while being immersed in the water W.
[0053]
FIG. 5 is a front view when two water tank filtration devices 1 are used as an internal filtration device using an external air pump. In the right-side water tank filtration device 1, the drive device 4 (the external air pump 48, the air hose 49, the air introduction member 50 and the water / air blowing member 60) and the inter-device connection member 111 are connected to the connection member 13 of the filtration container 2. And connect. In the water tank filtration device 1 on the left side, the upper plug 120 instead of the drive device, the water suction member 5 and the inter-device connection member 111 are connected to the connection member 13 of the filtration container 2. The inter-device connecting member 111 is connected by a connecting hose 116, and the two connected water tank filtration devices 1 are installed in the water tank 100 while being immersed in the water W.
[0054]
FIG. 6 is a front view when two water tank filtration devices 1 are used as a combination of an internal filtration device and an external filtration device. In the right-side water tank filtration device 1, the drive device 3, the water suction hose connection member 6, and the water blowing hose connection member 8 are connected to the connection member 13 of the filtration container 2, and the water tank filtration device 1 is connected to the water tank 100. Install outside. In the water tank filtration device 1 on the left side, the upper stopper 120 instead of the drive device, the water suction hose connection member 6 and the water blowing hose connection member 8 are connected to the connection member 13 of the filtration container 2, and the water tank filtration device is connected. 1 is installed inside the water tank 100. Then, the left water blowing hose coupling member 8 and the right water suction hose coupling member 6 are coupled by the water suction hose 82, and the lower end of the water suction hose 118 connected to the left water suction hose coupling member 6 is connected to the water tank 100. Place at the bottom.
[0055]
The method of connecting the internal filtration device using the external air pump 48 in FIG. 5 in the water tank 100 is not possible due to the structure of the suction port in the conventional internal filtration device using the external air pump. Met. However, in the internal filtration device using the external air pump 48 according to the present invention, the connection structure of the water suction member 5, the air introduction member 50, the water / air blowing member 60, etc., the double structure by the inner case, etc. are devised. Connection became possible, and it became possible to use it inside the water tank 100 in a state where two (or more) water tank filtration devices 1 were connected.
[0056]
The following can be considered as main merits of connecting two (or more) water tank filtration devices 1 as described above.
(1) Since a larger amount of the filter medium 19 can be used than when only one unit is used, a high filtration capacity can be obtained.
(2) Since not only one type but also several types of filter media 19 can be accommodated in each inner case 12, a state of water suitable for the purpose of the user can be obtained.
[0057]
Next, FIG.21 and FIG.22 shows the example of a change of the filtration container 2, and the point which changed so that the said inner case 12 may not be provided differs from the said embodiment. Accordingly, only different parts will be described, and common parts with the above-described embodiment will be denoted by common reference numerals and description thereof will be omitted.
[0058]
The filtration container 2 of this modification is detachably connected to the outer case 11, the outlet pipe 121 inserted concentrically into the outer case 11, and the upper end openings of the outer case 11 and the outlet pipe 121. The connecting member 13 includes an umbrella-shaped water-permeable support member 125 connected to the lower end opening of the outlet pipe 121. For this reason, the filtration container 2 can be configured to be disassembled with the minimum number of parts, and the filter medium can be easily replaced and cleaned. A large amount of filter material 19 is accommodated in a space 128 that is formed between the outer case 11, the outlet pipe 121, and the water-permeable support member 125. The water inflow channel 34 of the connecting member 13 communicates with the space 128, and the water outflow channel 35 communicates with the upper end opening of the outlet pipe 121.
[0059]
The outlet pipe 121 includes a pipe upper part 122 and a pipe lower part 123 that are made of plastic and are slidably inserted into and connected to each other. A screw 124 that is screwed with the screw 23 of the connecting member 13 is formed on the outer periphery of the upper end opening of the pipe upper portion 122, and the pipe upper portion 122 is detachably connected to the connecting member 13 only by this screwing.
[0060]
The water-permeable support member 125 includes an umbrella-shaped slit portion 126 integrally formed of plastic and a connection pipe portion 127 at the center thereof, and the connection pipe portion 127 is detachably inserted into and connected to the pipe lower portion 123. The umbrella-shaped slit portion 126 abuts on the inner bottom surface of the outer case 11 at the peripheral portion thereof, and allows water to pass through while supporting the filter material 19. Moreover, by using the umbrella shape, the space 128 can be maximized, and thus the filling amount of the filter medium 19 can be maximized.
[0061]
A stopper 130 made of plastic is detachably attached to the pipe upper part 122 (or the pipe lower part 123) so as to prevent the filter medium 19 from flowing out. The stopper 130 includes a ring portion 131 that contacts the inner peripheral surface of the outer case 11 and the ring portion 131 in order to prevent the lead-out pipe 121 from wobbling (in particular, the wobbling of the joint between the pipe upper portion 122 and the pipe lower portion 123). And a spoke portion 132 having a flat cross shape for supporting the. The materials of the outlet pipe 121, the water-permeable support member 125, and the stopper 130 are not limited to plastic, and may be glass, ceramics, or the like.
[0062]
With the above structure, the filtration container 2 is formed with a water flow path of the water inflow path 34 → the filter medium 19 in the space 128 → the water-permeable support member 125 → the outlet pipe 121 → the water outflow path 35.
[0063]
The filtration container 2 of the present modified example replaces the two types of driving devices 3, 4, the water suction member 5, the water suction hose connecting member 6, the water blowing member 7, and the water blowing hose connecting member 8 as in the above embodiment. By freely connecting, it is possible to configure the water tank filtration device 1 of (1-1), (1-2), (2), and (3) described in the above embodiment, and substantially the same operations and effects. Play.
[0064]
The difference from the above embodiment is that the filter medium 19 is accommodated not in the inner case 12 but in a space 128 formed between the outer case 11, the outlet pipe 121, and the water-permeable support member 125. It is only a point resulting from. Therefore, regarding this point, the description of the above embodiment can be used by replacing “inner case 12” of the above embodiment with “space 128” in the present modification. That is, the untreated water that has flowed into the water inflow path 34 flows into the filter medium 19 in the space 128 formed between the outer case 11, the outlet pipe 121, and the water-permeable support member 125, and passes through the filter medium 19. In this way, the treated water is changed to purified water, flows into and rises into the outlet pipe 121 through the umbrella-shaped slit 126, and is sent out from the upper end opening of the outlet pipe 121 to the water outflow path 35.
[0065]
Furthermore, this modified example has the following advantages compared to the embodiment. That is, more filtering material 19 can be accommodated in the space 128 formed between the outer case 11, the outlet pipe 121, and the water-permeable support member 125 than in the inner case 12 of the embodiment. Moreover, since not only one type but also two or more types of filter media 19 can be accommodated, a state of water that more closely matches the purpose of the user can be obtained.
[0066]
In addition, this invention is not limited to the said embodiment, For example, it can also be suitably changed and embodied as follows, for example in the range which does not deviate from the meaning of invention.
(1) Change the shape, structure, number of parts, etc. of each part of the filtration container 2.
(2) Change the shape, structure, etc. of the drive device connection structure, the water suction part connection structure, and the water outlet connection structure.
[0067]
【The invention's effect】
As described above in detail, according to the aquarium filtration apparatus according to the first aspect of the present invention, when it is desired to change the type of the drive device for various reasons such as the main body of the breeding organism, the filtration container is used as a common part. Changes can be made reasonably and economically with a minimum of replacement parts and costs, and parts that are no longer used can be stored in a small storage space in parts.
[0068]
According to the water tank filtration device according to the invention of claim 2, when it is desired to change the installation location between the internal type and the external type for various reasons such as the layout in the water tank, the installation space, etc. The common parts can be changed rationally and economically with the minimum number of replacement parts and costs, and parts that are no longer used can be stored in a small storage space in parts.
[0069]
According to the aquarium filtration apparatus according to the invention of claim 3, for various reasons such as the main body of the living organism, the layout in the aquarium, the installation space, etc. When you want to change between the two, the filtration container can be used as a common part, and it can be changed rationally and economically with a minimum of replacement parts and costs. become able to.
[0070]
In addition to the above effects, according to the water tank filtration device of the invention of claim 4, it is possible to prevent water leakage from between the filtration container and the drive device.
[0071]
Moreover, according to the water tank filtration apparatus which concerns on invention of Claim 5, the water leak from between a filtration container and a water suction member or a water suction hose connection member, and a filtration container, a water blowing member, or a water blowing hose connection Water leakage from between the members can be prevented.
[0072]
Moreover, according to the water tank filtration apparatus according to the invention of claim 6, the filtration container can be configured to be disassembled with the minimum number of parts, and maintenance such as replacement and washing of the filter medium can be easily performed. .
[0073]
Furthermore, according to the water tank filtering device pertaining to the seventh aspect of the invention, it is possible to prevent the filtering material from flowing out of the inner case.
[0074]
Moreover, according to the water tank filtration apparatus according to the invention of claim 8 or 9, the filtration container can be configured to be disassembleable with the minimum number of parts, and maintenance such as replacement and cleaning of the filter medium can be easily performed. In addition to the above, it is possible to increase the amount or type of filtering material that can be accommodated in the filtering container.
[0075]
Furthermore, according to the water tank filtration device of the invention of claim 10, it is possible to prevent the filter medium from flowing out of the filtration container.
[0076]
Furthermore, according to the water tank filtering device pertaining to the invention of claim 11, it is possible to prevent the lead-out pipe from wobbling.
[0077]
Furthermore, according to the water tank filtration device of the twelfth aspect of the present invention, algae attached to the outer case can be easily removed, the outer case is hardly damaged, and the filtration container can be stably installed.
[Brief description of the drawings]
FIG. 1 is a front view when a filtration device according to an embodiment of the present invention is used as an internal filtration device using a direct-attached turbine pump.
FIG. 2 is a front view when the filtration device is used as an internal filtration device using an external air pump.
FIG. 3 is a front view when the filtration device is used as an external filtration device using a direct-attached turbine pump.
FIG. 4 is a front view when two of the filtration devices are connected and used as an internal filtration device using a direct-attached turbine pump.
FIG. 5 is a front view when the two filtration devices are connected and used as an internal filtration device using an external air pump.
FIG. 6 is a front view when the two filtration devices are connected and used as a combination of an internal filtration device and an external filtration device.
FIG. 7 is a cross-sectional view of a filtration container of the filtration device.
FIG. 8 is a perspective view of an inner case of the filtration container.
FIG. 9 is a perspective view of the lid of the filtration container.
FIG. 10 is a cross-sectional view of a drive device using a direct-attached turbine pump of the filtration device.
FIG. 11 is a cross-sectional view of a drive device using an external air pump of the filtration device.
FIG. 12 is a cross-sectional view of a water suction member of the filtration device.
FIG. 13 is a cross-sectional view of a water suction hose connecting member of the filtration device.
FIG. 14 is a cross-sectional view of a water blowing member of the filtration device.
FIG. 15 is a cross-sectional view of a water blowing hose connecting member of the filtration device.
FIG. 16 is a cross-sectional view when the filtration device is an internal filtration device using a direct-attached turbine pump.
FIG. 17 is a cross-sectional view when the filtration device is an internal filtration device using an external air pump.
FIG. 18 is a cross-sectional view when the filtration device is an external filtration device using a direct-attached turbine pump.
FIG. 19 is a cross-sectional view of an inter-device connecting member that connects the filtration devices together.
FIG. 20 is a cross-sectional view of the upper plug of the filtration device.
FIG. 21 is a cross-sectional view showing a modified example of the filtration container of the embodiment.
FIG. 22 is a perspective view of the outlet pipe, the water-permeable support member, and the stopper of the filtration container.
[Explanation of symbols]
1 Water tank filter
2 Filtration container
3 Drive unit
4 Drive unit
5 Water suction member
6 Water suction hose connecting member
7 Water blowing parts
8 Water blowing hose connecting member
11 Outer case
12 Inner case
13 Connecting member
19 Filter media
20 Stopper
22 space
31 screws
32 screws
33 screws
41 Screw member
48 External air pump
50 Air introduction member
54 Screw members
60 Water / air blowing parts
65 Screw member
73 screws
78 Screw member
87 Screw member
95 Screw member
100 aquarium
121 Lead pipe
125 Water-permeable support member
128 spaces
130 Stopper
W Water

Claims

A filtering container that contains the filtering material and allows water to enter and exit, and a drive device that creates a water flow in the filtering container, and purifies the treated water by passing untreated water in the water tank through the filtering material. In the aquarium filtration device that returns to the aquarium,
A filtration device and two or more types of drive devices are provided as separate parts, and a drive device connection structure is provided for connecting one type of drive device selected from the two or more types of drive devices to the filtration vessel in a replaceable manner. A water tank filtration device.

A filtering container that contains the filtering material and allows water to enter and exit, and a drive device that creates a water flow in the filtering container, and purifies the treated water by passing untreated water in the water tank through the filtering material. In the aquarium filtration device that returns to the aquarium,
Separate the water suction hose connecting member that connects the water suction hose extending inside and outside the water tank and the water suction hose connecting member connected to the inside and outside of the water tank, and filtering one selected from the water suction member or the water suction hose connecting member Provide a water suction connection structure to connect to the container interchangeably,
The filtration container and the water blowing member that opens into the water tank and the water blowing hose connecting member that connects the water blowing hose that extends into and out of the water tank are separate parts, and one selected from the water blowing member or the water blowing hose connecting member is filtered. A water tank filtration device provided with a water outlet connection structure for exchangeably connecting to a container.

A filtering container that contains the filtering material and allows water to enter and exit, and a drive device that creates a water flow in the filtering container, and purifies the treated water by passing untreated water in the water tank through the filtering material. In the aquarium filtration device that returns to the aquarium,
A filtration container and two or more types of drive devices are separate parts, and a drive device connection structure is provided to connect one type of drive device selected from two or more types of drive devices to the filtration container in a replaceable manner.
Separate the water suction hose connecting member that connects the water suction hose extending inside and outside the water tank and the water suction hose connecting member connected to the inside and outside of the water tank, and filtering one selected from the water suction member or the water suction hose connecting member Provide a water suction connection structure to connect to the container interchangeably,
The filtration container and the water blowing member that opens into the water tank and the water blowing hose connecting member that connects the water blowing hose that extends into and out of the water tank are separate parts, and one selected from the water blowing member or the water blowing hose connecting member is filtered. A water tank filtration device provided with a water outlet connection structure for exchangeably connecting to a container.

The water tank filtration device according to claim 1 or 3, wherein the drive device connection structure is a structure using screw threading.

The water tank filtration device according to claim 2 or 3, wherein the water suction portion connection structure and the water outlet portion connection structure are structures using screw threading.

The filtration container includes an outer case, an inner case that is inserted in the outer case with a space therein and accommodates a filtering material, and an detachable connection to the opening of the outer case and the opening of the inner case The water tank filtration device according to claim 1, 2 or 3, wherein the water tank filtration device comprises a member and allows water to pass through a filter medium in the inner case through a space between the outer case and the inner case.

The water tank filtration device according to claim 6, wherein a stopper that prevents the filtration material from flowing out is provided at an opening of the inner case.

The filtration container includes an outer case, a lead-out pipe inserted with a space in the outer case, and an opening part of the outer case and a connecting member detachably connected to the opening part of the lead-out pipe, The water tank filtration device according to claim 1, 2 or 3, wherein water is allowed to flow through a filter medium accommodated in a space between the outer case and the outlet pipe and then into the outlet pipe.

The water tank filtration device according to claim 8, wherein a water-permeable support member that contacts the inner bottom surface of the outer case and supports the filter material is connected to the outlet pipe.

The aquarium filtration apparatus according to claim 8 or 9, wherein the outlet pipe is provided with a stopper for preventing the filtration material from flowing out.

The water tank filtration device according to claim 10, wherein the stopper abuts against an inner surface of the outer case in order to prevent the lead-out pipe from wobbling.

The water tank filtration device according to claim 6 or 8, wherein the outer case is made of glass.