JP4388290B2

JP4388290B2 - Static mixing device

Info

Publication number: JP4388290B2
Application number: JP2003050001A
Authority: JP
Inventors: 建二久保; ▲えい▼三杉野; 央欣目瀬; 樹伸斉藤; 丈士安河内; 克利小路
Original assignee: Fujikin Inc
Current assignee: Fujikin Inc
Priority date: 2003-02-26
Filing date: 2003-02-26
Publication date: 2009-12-24
Anticipated expiration: 2023-02-26
Also published as: JP2004255320A

Description

【０００１】
【発明の属する技術分野】
本発明は、複数の板状体の貫通孔部に流体を流通させることにより流体を混合する静止型混合装置の改良に関する。なお、請求項を含め本明細書において、混合とは、流体を混ぜ合わすことをいい、分散・溶解などを含む意味である。
【０００２】
【従来の技術】
従来、この種の装置として、本発明者らが既に提案した特開２０００−２５４４６９に記載のものが知られている。
この装置は、複数の孔部が穿設されてなる複数種のディスク形のエレメントが筒状ケース体内に組み合わされた構造からなり、そのケース体内に流体を流すことにより、エレメントの複数の孔部に流体が流通する間に集合・分離を繰り返し、優れた混合効果を得ることができるものである。
このようにかかる装置は、簡単に流体混合を実現できるものであるが、より混合効率に優れたものが望まれていた。特に、粒子径がより細かい分散体を簡単に得ることが望まれていた。
【０００３】
【特許文献１】
特開２０００−２５４４６９号公報（第４−５頁、図１等）
【０００４】
【発明が解決しようとする課題】
本発明は、この種の静止型混合装置の改良を目的とするものである。また、極めて粒子の細かい分散体を簡単に作製できる静止型混合装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
そこで、本発明は、貫通孔部を有する少なくとも２枚の板状体を備え、前記各板状体の貫通孔部に流体を流通させることによりこれを混合する静止型混合装置であって、前記板状体のうちから任意に選ばれる隣合う２枚の板状体の一方には、貫通孔部が複数形成されており、他方の板状体には、貫通孔部が１個形成されており、前記貫通孔部は、板状体の表面及び裏面に表面開口部及び裏面開口部が形成され、且つ板厚方向の中途部に貫通面積が最小となる最小開口部が形成されていると共に、表面開口部及び裏面開口部から最小開口部に向かうに従い次第に縮径する縮径開口部が連設された形状であり、前記一方の板状体の複数の貫通孔部は、前記表面開口部及び裏面開口部の周縁同士が接して配置されており、前記一方の板状体の各貫通孔部の中心点と他方の板状体の貫通孔部の中心点を異なる位置とし、且つ一方の板状体の各貫通孔部の表面開口部又は裏面開口部の周縁と他方の板状体の貫通孔部の裏面開口部又は表面開口部の周縁を交差させて、前記一方の板状体と他方の板状体が当接状態で並設されている静止型混合装置を提供する。
【０００７】
さらに、前記一方の板状体の貫通孔部の総貫通面積が、他方の板状体の貫通孔部の総貫通面積の１．５倍以上の大きさに形成されていることが好ましい。また、前記隣合う２枚の板状体の貫通孔部は、その貫通面積が同じに形成されていることが好ましい。
ここで、貫通孔部の貫通面積とは、貫通孔部の各横断面（板厚方向に対し鉛直な断面）の面積のうち最も小さい面積を言い、例えば、最小開口部を有する貫通孔部の貫通面積は、最小開口部の横断面積である。また、板状体の貫通孔部の総貫通面積とは、流体の流通路を構成する全ての貫通孔部の貫通面積の和を言い、例えば、１つの流通路を構成する貫通孔部が４個の場合には、４つの貫通孔部の貫通面積を足したものである。
【０００９】
さらに、前記隣合う２枚の板状体のうち、一方の板状体が、他方の板状体よりも流体の下流側に配設されていることが好ましい。
【００１０】
【発明の実施形態】
以下、本発明の実施形態について、図面を参照しつつ詳細に説明する。尚、複数の板状体を個々に説明する場合、板状体を示す符号「３」に加えて、上流側の板状体から順に「ａ，ｂ…」のアルファベットを必要に応じて付記している。
＜第１実施形態＞
第１実施形態は、任意に選ばれる隣合う２枚の板状体間に於ける流体の流通路が、複数の貫通孔部と１個の貫通孔部によって構成されている形態について詳述する。
図１（ａ）は、静止型混合装置１の縦断面図で、（ｂ）は、並設された板状体３を流体の上流側から見た正面図である。図２は、第１及び第３の板状体３ａ，３ｃの正面図及び断面図で、図３は、第２の板状体３ｂの正面図及び断面図である。
【００１１】
図１において、１は、本発明に係る静止型混合装置を示す。この装置１は、筒状のケース体２と、該ケース体２内に設けられた複数の板状体３と、を備える。
【００１２】
ケース体２は、内部に板状体３を収納保持する収納部が設けられ、且つ一方端に配管用接続部５と他方端にフランジ部６が設けられた２個の筒状体７からなり、この２つの筒状体７のフランジ部６同士をパッキン４を介在させて付き合わせ、着脱可能な締付け具８によって気密的に一体化することにより構成されている。そして、この締付け具８を外して２つの筒状体７を分離することにより、板状体３を取り出すことができる。尚、図中、１０は、各板状体の位置決め孔に挿入脱可能な板状体回転防止用挿入棒を示し、１１は、板状体の枚数に応じて収納部の間隙を調整するリング状のスペーサーを示す。
【００１３】
このケース体２内には、少なくとも２以上の板状体３が、隣合う板状体３の板面を当接させた状態で並設されている。
本実施形態では、３枚の板状体３が並設されており、各板状体３には、その一面側から他面側に貫通する貫通孔部９が形成されている。各板状体３は、何れも同形同大であって、円筒状のケース体２内に挿入脱可能な円盤状に形成されている。また、この３枚の板状体３のうちから任意に選ばれる隣合う２枚の板状体３は、その一方の板状体３が複数個の貫通孔部９を有し、他方の板状体３は１個の貫通孔部９を有する。この一方の板状体３の複数個の貫通孔部９と、他方の板状体３の１個の貫通孔部９とによって、隣合う２枚の板状体３間に於ける流通路Ｒが構成されている。
【００１４】
具体的には、流体の上流側から順に、一方の板状体に相当する第１及び第３の板状体３ａ，３ｃは、同一であって、それぞれ４個の貫通孔部９が形成されている。また、他方の板状体に相当する第２の板状体３ｂは、１個の貫通孔部９が形成されている。各貫通孔部９は、図２及び図３に示すように、板状体３の表面及び裏面の相対位置に、最も面積が大きい円形の表面開口部１２及び裏面開口部１３が形成され、且つ板厚方向の中途部に貫通面積が最小となる最小開口部１４が形成されていると共に、表面開口部１２及び裏面開口部１３から最小開口部１４に向かうに従い次第に縮径する縮径開口部１５が連設された形状（全体として略鼓状）である。
そして、何れの板状体３の貫通孔部９も同形同大に形成されている。従って、第１又は第３の板状体３ａ，３ｃの貫通孔部９の総貫通面積は、第２の板状体３ｂの貫通孔部９の総貫通面積の４倍の大きさである。
【００１５】
また、第１及び第３の板状体３ａ，３ｃの各貫通孔部９は、表面開口部１２及び裏面開口部１３の周縁同士が接し、且つ板状体３の中心から放射状の位置に配置されている。一方、第２の板状体３ｃの貫通孔部９は、板状体３の中心に一致して形成されている。従って、３枚の板状体３をケース体２内に並設すると、図１（ｂ）に示すように、第１及び第３の板状体３ａ，３ｃと第２の板状体３ｂの貫通孔部９の中心点は異なる位置となる。
【００１６】
貫通孔部９の最小開口部１４の大きさは、特に限定されず流す流体に応じて種々に設定することができる。例えば、液−液を流体とする場合には直径０．１ｍｍ以上の円が形成できる寸法であることが好ましく、更に０．５ｍｍ以上の円が形成できる寸法であることがより好ましい。また、気−気を流体とする場合には、極めて小さく形成することができる。
【００１７】
また、貫通孔部９の表面開口部１２及び裏面開口部１３の大きさについても特に限定されないが、各板状体３の板面を当接させて並設しても貫通孔部９に流体が流通するように（つまり流体の流通路を確保すべく）、一方の板状体３の裏面開口部１３の周縁と他方の板状体３の表面開口部１２の周縁が交差する程度の大きさに形成されている。従って、第１の板状体３ａの各貫通孔部９を通過した流体は、第２の板状体３ｂの１個の貫通孔部９に集合し、更に、第３の板状体３ｃの各貫通孔部９に分流するというように、３枚の板状体３には、１つのルートの流通路Ｒが構成されている。
【００１８】
次に、上記静止型混合装置１の使用例を図４に示す。
図４中、Ｐは、流体を送出するポンプを、Ｔは、流体を貯蔵するタンクを、Ｓは送入管や送出管などの配管部を、矢印は流体の流れ方向を示す。
混合する流体としては流動可能な物質であれば特に限定されず、同種又は異種の液−液、気−液、固−液、気−気、固−気、気−液−固など、任意のものを２以上組み合わせて使用することができる。
【００１９】
流体は、２種以上のものを予め予備混合したものをタンクＴに投入してもよいし、複数のタンクＴを準備してそれぞれ別に投入しておいてもよい。また、配管Ｓの途中で適宜投入するようにしてもよい。
【００２０】
そして、ポンプＰを作動させると、流体はタンクＴから送入管Ｓを通じて、装置１のケース体２内に圧送される。流体の圧力についても特に限定されないが、高圧にするほど流体の混合効率が高く、細かい粒子からなる分散体を得ることができる。
【００２１】
ケース体２内に送入された流体は、各板状体３の貫通孔部９によって構成された流通路Ｒを流通する。具体的には、図５の矢印で示すように、流体は、第１の板状体３ａの表面に当たり、この板状体３ａの４個の貫通孔部９へと分流する。更に、第１の板状体３ａの各貫通孔部９を通過した流体は、第２の板状体３ｂの表面に当たり渦を伴った複雑な流れを作りながら、この板状体３ｂの１個の貫通孔部９に集合した後、同様に第３の板状体３ｃの表面に当たり４個の貫通孔部９へ分流し、送出管Ｓから装置１外部へと送り出される。
【００２２】
本装置１によれば、流体を効率よく混合することができる。さらに、例えば相溶性のない流体同士等（例えば、水と油など）を流通させると、より粒子の細かい分散体を得ることができる。
この作用は、明確ではないが、貫通孔部９を通過する際、流体が拡大縮小し、流体同士又は板状体に激しく衝突して渦を伴った複雑な流れとなり、流体がキャビテーションを引き起こすためと考えられる。
さらに、第２の板状体３ｂを通過する際、分離した流体が１箇所の貫通孔部９に集合すること、及び、その後再び複数に分流することによって、流体に強い剪断力が働くためと考えられる。また、第２の板状体３ｂの貫通孔部９の総貫通面積は、第１又は第３の板状体３ａ，３ｃの貫通孔部９の総貫通面積に比して非常に小さいので、第２の板状体３ｂの貫通孔部９を通過する際の流速は、極めて早くなることから、流体が、第３の板状体３ｃの表面により強く当たり、流体が破砕されるためと考えられる。
【００２３】
＜第１実施形態の変形例＞
上記第１実施形態では、各板状体９を通じて構成される流通路Ｒが１つのルートのみのものを例示したが、これを複数ルートに構成することもできる。
例えば、２ルートの流通路Ｒ１，Ｒ２を構成する例として、図６及び図７に示すように、第２の板状体３ｂに、間隔を開けて２個（複数）の貫通孔部９を形成し、且つ第１及び第３の板状体３ａ，３ｃに、この第２の板状体３ｂのそれぞれの貫通孔部９に対応するように４個（複数）の貫通孔部９をそれぞれ形成し、３枚の板状体３を接触状態で並設させた装置１などが例示される。この変形例に係る装置１でも上記と同様の効果を奏する。
【００２４】
このように、各板状体３の貫通孔部９によって構成される流通路Ｒを、実質的に別個独立して構成すれば、構造的に複数の貫通孔部９が形成された板状体３（上記第２の板状体３ｂ等）を用いることも可能である。
このように、１個の貫通孔部９を有する板状体３とは、貫通孔部９が板状体３に１個形成されているという構造的な意味に限られず、実質的に独立した１つの流通路Ｒに対して１個の貫通孔部９を有するという意味も含まれる。つまり、任意に選ばれる隣合う２枚の板状体３間に於ける流通路Ｒ（複数ルートの流通路が構成されている場合には、そのうちの１つの流通路）が、複数の貫通孔部９と１個の貫通孔部９によって構成されていればよい。
【００２５】
また、第１実施形態では、３枚の板状体３が並設され、そのうちの第２の板状体３ｂが１個の貫通孔部９を有する装置１を例示したが、板状体３の数や貫通孔部９の数、１個の貫通孔部９を有する板状体３の配置などは適宜設計変更することができる。例えば、下記表１に種々の組み合わせを例示する。
【００２６】
【表１】

【００２７】
表１に於いて、例１，２は、２枚の板状体、例３，４は、３枚の板状体、例５，６は、４枚の板状体、例７，８は、５枚の板状体が組み合わされたものを示す。また、例５，７，８は、１個の貫通孔部を有する板状体が２枚（複数）設けられたものを示す。また、例２を除いて、１個の貫通孔部を有する板状体は、複数の貫通孔部を有する板状体よりも流体の上流側に配置されている。このように１個の貫通孔部９を有する板状体３を上流側に配置すれば、流体の混合効率がより向上するので好ましい。
【００２８】
更に、第１実施形態では、流体の流速を早めるため、第１又は第３の板状体３ａ，３ｃの貫通孔部９の総貫通面積が、第２の板状体３ｂの貫通孔部９の総貫通面積の４倍大に形成されているが、総貫通面積の関係はこれに限定されるものではない。少なくとも２枚の板状体３のうちから任意に選ばれる隣合う２枚の板状体のうち、一方の板状体３の総貫通面積が他方の板状体３の総貫通面積の１．５倍以上、好ましくは２倍以上となるように形成されていればよい。また、一方の板状体３と他方の板状体３の総貫通面積の差が大きいほど流体の流れを早くできるので、その上限は特に限定されないが、総貫通面積の差が余りに大きすぎると流体が流れ難くなる場合もあるので、この点を考慮すると、一方の板状体３の総貫通面積が他方の板状体３の総貫通面積の１００倍以下、好ましくは１０倍以下に形成すればよい。
尚、各板状体３の総貫通面積を同じにしたり、或いは、１個の貫通孔部９を有する板状体３の総貫通面積を他の板状体３の総貫通面積よりも大きく形成してもよい。
【００２９】
また、図８に示すように、１個の貫通孔部９を有する板状体３として、貫通孔部９の表面開口部１２及び裏面開口部１３を大開口部とし且つ縮径開口部１５の傾斜角θを板面に対して鋭角に形成された板状体３を用いてもよい。この変形例に係る板状体３が並設された装置１は、図８（ｂ）に示すように、隣合う板状体３ａ，３ｃに極めて多くの貫通孔部９が形成されている場合でも、上流側の板状体３ａの多数の貫通孔部９から流れ出る流体を、１個の貫通孔部へと集合させ、且つ下流側の板状体３ｃの多数の貫通孔部９へ分流させることができるので好ましい。
【００３０】
＜第２実施形態＞
第２実施形態は、全ての板状体３が複数の貫通孔部９を有し、且つこれら複数の貫通孔部９によって１つの流通路Ｒが構成されている点で、上記第１実施形態と異なる。
主として第１実施形態と異なる部分について説明し、上記実施形態１と共通する部分の説明は、適宜省略し、各部の名称・図番などを援用することがある。
【００３１】
本実施形態の装置１は、少なくとも２枚の板状体３のうちから任意に選ばれる隣合う２枚の板状体３に関し、一方の板状体３の貫通孔部９の総貫通面積が他方の板状体３の貫通孔部９の総貫通面積の１．５倍以上、好ましくは２倍以上に形成されている。
【００３２】
具体的には、図９に示すように、この装置１は、ケース体２内に２枚の板状体３が並設されている。他方の板状体に相当する第１の板状体３ａは、図１０に示すように、４個の貫通孔部９が形成されており、一方の板状体に相当する第２の板状体３ｂは、図１１に示すように、５個の貫通孔部９が形成されている。そして、第１の板状体３ａと第２の板状体３ｂの貫通孔部９の中心点が異なる位置となるように（図９（ｂ）に示す）、各貫通孔部９はそれぞれ均等配置されている。
また、第１の板状体３ａの貫通孔部９の貫通面積（最小開口部１４）は、第２の板状体３ｂの貫通孔部９の貫通面積の１／４の大きさに形成されている。従って、第２の板状体３ｂは、その総貫通面積が第１の板状体３ａの５倍である。
【００３３】
かかる静止型混合装置１を用いて流体を混合すると、上記第１実施形態と同様の混合効果を得られる。これは、流体がキャビテーションを引き起こすこと、及び、第１の板状体３ａの貫通孔部９の総貫通面積が、第２の板状体３ｂの貫通孔部の総貫通面積に比して非常に小さい（具体的には１：５の比）ので、第１の板状体３ａの貫通孔部９を通過する際の流速が極めて早くなり、第２の板状体３ｂに強く当たって流体が破砕されるためと考えられる。
【００３４】
＜第２実施形態の変形例＞
第２実施形態に示す板状体３の数、貫通孔部９の数、貫通孔部９の貫通面積、各板状体３の総貫通面積の比率などは適宜設計変更することができる。例えば、表２に種々の組み合わせを例示する。尚、総貫通面積の比率は、貫通孔部の大きさや貫通孔部の数を変更することによって適宜に変更することができる。
【００３５】
【表２】

【００３６】
表２に於いて、例１は、２枚の板状体、例２は、３枚の板状体、例３，４は、４枚の板状体、例５は、５枚の板状体が組み合わされたものを示す。また、例１を除いて、総貫通面積が１の比率の板状体が、上流側に配置されており、これらは流体の混合効率がより向上するので好ましい例である。
【００３７】
＜各実施形態に共通する変形例＞
（板状体について）
上記各実施形態では、隣合う板状体３は、板面が接触状態で並設されているので、より高速で流体を流通させることができるという利点があるが、これらは間隔を開けて並設してもよい。また、上記各実施形態に於いては、隣合う板状体３は、流通方向に対し鉛直に並設されているが、必ずしもこのように並設しなければならないわけではなく、上流側の板状体３から下流側の板状体３へと流れるように流通路Ｒが確保されるように並設されていればよい。
【００３８】
また、上記各実施形態では、板状体３は円盤状に形成されているが、この形状に限定されるものではなく、四角盤状などであってもよい。もっとも、均質な流れを得るために、厚みが一定で、表面が平滑で、更にケース体２の内周形状に適合したものが好ましい。尚、板状体３は、切削加工、鋳造、焼結成型など公知の方法で製作することができる。
【００３９】
（貫通孔部の形状について）
上記各実施形態の貫通孔部９は、板厚方向に鉛直な断面（横断面）形状が円形に形成されているが、この横断面形状に限定されるものでなく、例えば、楕円形、長円形、三角形、四角形、台形、星形、その他の多角形などの形状でもよい。中でも、横断面形状が、円形又は正方形や長方形などの正多角形が好ましい。さらに、上記各実施形態の貫通孔部９の横断面形状は、板厚方向全体を通して円形であるが、異種形状の組み合わせ形状（例えば、表面開口部１２及び裏面開口部１３の横断面形状が四角形で、最小開口部１４の横断面形状が円形など）であってもよい。
【００４０】
また、上記各実施形態の貫通孔部９は、板厚方向に沿った断面（縦断面）形状が、図２（ｂ）に示すような形状であるが、この縦断面形状はこれに限定されず、例えば、図１２（ａ）に示すような板面に鉛直な直線状、（ｂ）に示すような板面に斜交する直線状、（ｃ）に示すような曲線状、（ｄ）に示すような間隔が拡大する直線状、（ｅ）に示すような間隔が縮小する直線状、（ｆ）に示すような間隔が縮小する直線状と板面に鉛直な直線状の組み合わせ形状、（ｇ）に示すような板面に鉛直な直線状と間隔が拡大する直線状の組み合わせ形状、又、（ｈ）に示すような、その他任意の形状などでもよい。
尚、これら各種の横断面形状と縦断面形状を組み合わせた貫通孔部９の全体形状の一部を図１３の（ａ）〜（ｌ）に例示する。
【００４１】
さらに、板状体３について、必ずしも同一の形状及び／又は貫通面積の貫通孔部９を有するものに限定されず、各板状体３の貫通孔部９の形状及び／又は貫通面積をそれぞれ異なるものとしてもよい。例えば、第１の板状体３ａの貫通孔部９が円形で、且つ第２の板状体３ｂの貫通孔部９が四角形など、各板状体３に於ける貫通孔部９の形状を適宜に変更してもよい。
【００４２】
（貫通孔部の配置について）
各板状体３は、上記各実施形態のように、隣合う板状体３の貫通孔部９の中心点が異なる位置となるように配置することが好ましいが、複数個の貫通孔部９のうち一部の貫通孔部９が、隣合う板状体３の貫通孔部９の中心点と一致するように配置されていてもよい。隣合う板状体３の全ての貫通孔部９の中心点を一致させるように配置すると、流体は、下流側の板状体の表面に実質的に衝突することなく流れるが、全ての貫通孔部９の中心点が一致していなければ、衝突による剪断作用などを期待できるからである。
【００４３】
（ケース体について）
上記各実施形態のケース体２として、２個の筒状体７を一体化した構造のものを例示したが、これに限定されず、例えば１本の筒状体によって構成するなど適宜設計変更可能である。また、ケース体２の横断面形状は円形のほか、四角形、多角形などの種々の形状のものを使用してもよい。
また、本装置１に於いて、ケース体は、必ずしも必要なものではなく、例えば、新規に又は既設の配管部Ｓの途中に板状体３を直接取り付けて装置１を構成してもよい。具体的には、図１４に示すように、送入管Ｓ及び送出管Ｓの端部に、板状体３の表面に当接可能なリング状のフランジ部１７を設け、両フランジ部１７の間に少なくとも２枚以上の板状体３をパッキンを介して並設し、これらをネジ棒とナットなどの緊結具１８で全体を気密的に一体化したものなどが例示できる。
【００４４】
（ケース体や板状体の材質等）
上記各実施形態で用いるケース体２及び板状体３は、流体の圧力に耐えうる機械的強度を有する材質又は構造のものであれば特に限定されず、例えば、ステンレスなどの金属製、セラミック製、エンプラなどの合成樹脂製などを適宜用いることができる。更に、内面が平滑なもの、耐腐食性を有するものが好ましい。
【００４５】
（使用例について）
上記各実施形態の装置１の使用例として、図４に示す方法を例示したが、例えば、図１５に示すように、複数の装置１を直列又は並列に配置して使用してもよく、更に、必要に応じてケニックス型等の混合方式の異なる静止型混合器を併用することも可能である。また、タンクＴやポンプＳを複数使用してもよい。
さらに、通常、流体を１回通過させると、十分に混合されるが、必要に応じて、装置１に流体を複数回循環させて流通させてもよい。この場合、送出管の途中に切替バルブなどを設け、図４に示すように、返送管Ｓ１を別途設ければよい。
【００４６】
【実施例】
以下、実施例及び比較例を示して本発明を更に詳述する。
各実施例及び比較例は、下記のものを用いた。
（１）用いた流体及び配合比率
流体１：水道水…９５重量部
流体２：白絞油（昭和産業株式会社製、商品名：大豆白絞め油）…５重量部
流体３：乳化剤（株式会社花王製、商品名：レオドールスーパーＴＷ−Ｏ１２０）…０．５重量部
（２）粒子径測定の使用機器
株式会社堀場製作所製、レーザ回析／散乱式粒子径分布測定装置（ＬＡ−３００形）
【００４７】
（３）使用した板状体（表３に要部を表示）
板状体▲１▼：図２に示す４個の貫通孔部を有する形状のもの。表面開口部及び裏面開口部の直径Ｌ…６（ｍｍ）。最小開口部Ｍ…２（ｍｍ）。板厚Ｄ…５（ｍｍ）。縮径開口部の傾斜角θ…４５度。貫通面積…π（ｍｍ^２）。総貫通面積…４π（ｍｍ^２）。
板状体▲２▼：図３に示す１個の貫通孔部を有する形状のもの。表面開口部及び裏面開口部の直径Ｌ…６（ｍｍ）。最小開口部Ｍ…２（ｍｍ）。板厚Ｄ…５（ｍｍ）。縮径開口部の傾斜角θ…４５（度）。貫通面積…π（ｍｍ^２）。総貫通面積…π（ｍｍ^２）。
板状体▲３▼：図８に示す１個の貫通孔部を有する形状のもの。表面開口部及び裏面開口部の直径Ｌ…２５（ｍｍ）。最小開口部Ｍ…４（ｍｍ）。板厚Ｄ…５（ｍｍ）。縮径開口部の傾斜角θ…１１（度）。貫通面積…４π（ｍｍ^２）。総貫通面積…４π（ｍｍ^２）。
板状体▲４▼：図１０に示す４個の貫通孔部を有する形状のもの。表面開口部及び裏面開口部の直径Ｌ…６（ｍｍ）。最小開口部Ｍ…１（ｍｍ）。板厚Ｄ…５（ｍｍ）。縮径開口部の傾斜角θ…４５（度）。貫通面積…０．２５π（ｍｍ^２）。総貫通面積…π（ｍｍ^２）。
板状体▲５▼：図１１に示す５個の貫通孔部を有する形状のもの。表面開口部及び裏面開口部の直径Ｌ…６（ｍｍ）。最小開口部Ｍ…２（ｍｍ）。板厚Ｄ…５（ｍｍ）。縮径開口部の傾斜角θ…４５（度）。貫通面積…π（ｍｍ^２）。総貫通面積…５π（ｍｍ^２）。
【００４８】
【表３】

【００４９】
実施例１
実施例１は、図１（ａ）に示す円筒状ケース体内に、上流側から順に、板状体▲１▼、板状体▲２▼、板状体▲１▼の３枚の板状体が接触状態で並設された装置を使用した。
図４に示すように、タンク及びポンプを設置し、このタンク内に、予め攪拌棒を用いて予備混合した流体１〜３の混合物を約１０リットル（液温３０℃）投入し、３（ＭＰａ）の圧力で装置内に圧入し、装置内に１回流通させた。連続して約２分間運転し、このうち約１分後に得られた流体の粒子径を測定した。また、ストップウォッチとメスシリンダーを用いて流量を測定し、流路断面で割って流速を測定したところ、第２の板状体▲１▼の貫通孔部では、２４６．０（ｍ／ｓ）、第３の板状体▲２▼の貫通孔部では、６１．５（ｍ／ｓ）であった。
各実施例、比較例の試験結果を表４に示す。尚、比較例２を除き、粒度分布には大きな差は見られなかった。
【００５０】
【表４】

【００５１】
実施例２
実施例２は、上流側から順に、板状体▲１▼、板状体▲５▼、板状体▲２▼の３枚の板状体が接触状態で並設された装置を使用した。そして、実施例１と同様にして流体１〜３の混合物を流し、粒子径を測定した。尚、第１の板状体▲１▼の貫通孔部での流速は１６４．０（ｍ／ｓ）で、第２の板状体▲５▼の貫通孔部での流速は１３１．０（ｍ／ｓ）であった。
実施例３
実施例３は、上流側から順に、板状体▲５▼、板状体▲３▼の２枚の板状体が接触状態で並設された装置を使用した。そして、実施例１と同様にして流体１〜３の混合物を流し、粒子径を測定した。尚、第１の板状体▲５▼の貫通孔部での流速は１２７．０（ｍ／ｓ）で、第２の板状体▲３▼の貫通孔部での流速は１５９．０（ｍ／ｓ）であった。
実施例４
実施例４は、上流側から順に、板状体▲４▼、板状体▲５▼の２枚の板状体が接触状態で並設された装置を使用した。そして、実施例１と同様にして流体１〜３の混合物を流し、粒子径を測定した。尚、第１の板状体▲４▼の貫通孔部での流速は２４６．０（ｍ／ｓ）で、第２の板状体▲５▼の貫通孔部での流速は４９．２（ｍ／ｓ）であった。
【００５２】
比較例１
比較例１は、各板状体に複数の貫通孔部が形成され、且つ各板状体の総貫通面積が略等しいものであって、上流側から順に、板状体▲５▼、板状体▲１▼の２枚の板状体が当接状態で並設された装置を使用した。そして、実施例１と同様にして流体１〜３の混合物を流し、粒子径を測定した。尚、第１の板状体▲５▼の貫通孔部での流速は１５７．０（ｍ／ｓ）で、第２の板状体▲１▼の貫通孔部での流速は１９６．０（ｍ／ｓ）であった。
比較例２
比較例２は、板状体▲２▼を１枚のみの装置を使用した。そして、実施例１と同様にして流体１〜３の混合物を流し、粒子径を測定した。尚、第１の板状体▲２▼の貫通孔部での流速は２５９．０（ｍ／ｓ）であった。
【００５３】
表４から明らかな通り、各実施例では白絞油がより細かい粒子となって分散していることが判る。
また、実施例３と比較例１を比べると、板状体の数や第１の板状体と第２の板状体の総貫通面積が一致するが、１個の貫通孔部を有する板状体を用いた実施例３の方が優れている。さらに、実施例４と比較例１を比べると、板状体の数や貫通孔部の数は略一致するが、小さい総貫通面積を有する板状体を用いた実施例４の方が優れている。また、実施例１と実施例２を比較すると、実施例１の方が優れていることから、１個の貫通孔部を有する板状体が、複数個の貫通孔部を有する板状体よりも上流側に配置する方が好ましいことが判る。
【００５４】
【発明の効果】
以上の通り、本発明の静止型混合装置は、従来の装置よりも、更に混合効率に優れており、流体を流すだけで、効率よく流体を混合することができる。さらに、より粒子の細かい分散体を作製することができる。
また、本発明の装置によれば、処理する流体が少量であっても、十分に混合することができ、粒子の細かい分散体を作製することができる。
【図面の簡単な説明】
【図１】（ａ）は第１実施形態に係る静止型混合装置の縦断面図を示し、（ｂ）は、ケース体内に並設された板状体を流体の上流側から見た正面図を示す。
【図２】（ａ）は、第１実施形態に係る第１及び第３の板状体の正面図を示し、（ｂ）はそのＡ−Ａ線断面図、（ｃ）はそのＢ−Ｂ線断面図を示す。
【図３】（ａ）は、第１実施形態に係る第２の板状体の正面図を示し、（ｂ）はそのＡ−Ａ線断面図を示す。
【図４】本装置の使用例を示す概念図。
【図５】第１実施形態に係る静止型混合装置の使用状態を示す一部省略縦断面図。
【図６】（ａ）は、第２の板状体の変形例を示す正面図、（ｂ）は、第１及び第３の板状体の変形例を示す正面図、（ｃ）は、これらを並設した状態を流体の上流側から見た正面図を示す。
【図７】図６の板状体を並設した静止型混合装置の使用状態を示す一部省略縦断面図。
【図８】（ａ）は、第２の板状体の他の変形例を示す正面図、（ｂ）は、それを第１及び第３の板状体の間に並設した静止型混合装置の一部省略縦断面図。
【図９】（ａ）は、第２実施形態に係るに係る静止型混合装置の縦断面図を示し、（ｂ）は、この並設された板状体を流体の上流側から見た正面図を示す。
【図１０】（ａ）は、第２実施形態に係る第１の板状体の正面図を示し、（ｂ）はそのＡ−Ａ線断面図、（ｃ）はそのＢ−Ｂ線断面図を示す。
【図１１】（ａ）は、第２実施形態に係る第２の板状体の正面図を示し、（ｂ）はそのＡ−Ａ線断面図を示す。
【図１２】（ａ）〜（ｈ）は、板状体の貫通孔部の縦断面形状の各種変形例を示す一部省略縦断図。
【図１３】（ａ）〜（ｌ）は、貫通孔部の全体形状の各種変形例を示す斜視図。
【図１４】ケース体を用いない装置の変形例を示す一部縦断面図（配管部のみ断面で示す）。
【図１５】（ａ），（ｂ）は、本装置の他の使用例を示す概念図。
【符号の説明】
１…静止型混合装置、２…筒状ケース体、３…板状体、３ａ…第１の板状体、３ｂ…第２の板状体、３ｃ…第３の板状体、９…貫通孔部、１２…表面開口部、１３…裏面開口部、１４…最小開口部、１５…縮径開口部、Ｒ…流通路、Ｐ…ポンプ、Ｔ…タンク[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a static mixing device that mixes fluid by flowing fluid through through holes of a plurality of plate-like bodies. In addition, in this specification including a claim, mixing means mixing fluids, and means that it includes dispersion and dissolution.
[0002]
[Prior art]
Conventionally, as this type of apparatus, the apparatus described in Japanese Patent Laid-Open No. 2000-254469, which has already been proposed by the present inventors, is known.
This device has a structure in which a plurality of types of disk-shaped elements each having a plurality of holes formed therein are combined in a cylindrical case body, and a plurality of hole portions of the elements are formed by flowing fluid into the case body. In this way, it is possible to obtain an excellent mixing effect by repeating the assembly and separation while the fluid flows.
Thus, although such an apparatus can implement | achieve fluid mixing easily, the thing excellent in mixing efficiency was desired. In particular, it has been desired to easily obtain a dispersion having a finer particle diameter.
[0003]
[Patent Document 1]
JP 2000-254469 A (page 4-5, FIG. 1 etc.)
[0004]
[Problems to be solved by the invention]
The present invention aims to improve this type of static mixing apparatus. It is another object of the present invention to provide a static mixing device that can easily produce a dispersion having extremely fine particles.
[0005]
[Means for Solving the Problems]
Therefore, the present invention is a static mixing device that includes at least two plate-like bodies having through-hole portions, and mixes the fluid by circulating fluid through the through-hole portions of the plate-like bodies, One of two adjacent plate-like bodies arbitrarily selected from the plate-like bodies has a plurality of through-hole portions, and the other plate-like body has one through-hole portion. The through hole has a front opening and a back opening formed on the front and back surfaces of the plate-like body, and a minimum opening having a minimum penetrating area in the middle of the plate thickness direction. The diameter-reducing openings gradually decreasing in diameter from the front-side opening and the back-side opening toward the minimum opening, and the plurality of through-holes of the one plate-like body have the shape of the surface-opening And the peripheries of the opening on the back surface are arranged in contact with each other, and each of the one plate-like bodies penetrates. The center point of the part and the center point of the through hole part of the other plate-like body are set at different positions, and the periphery of the front surface opening or the back surface opening part of each through-hole part of one plate-like body and the other plate-like body The one plate-like body and the other plate-like body by crossing the periphery of the back surface opening portion or the front surface opening portion of the through-hole portionIs in contactProvided is a static mixing device arranged side by side.
[0007]
Furthermore, it is preferable that the total penetration area of the through hole portion of the one plate-like body is formed to be 1.5 times or more larger than the total penetration area of the through-hole portion of the other plate-like body. Moreover, it is preferable that the through-hole part of the said 2 adjacent plate-shaped body is formed in the same penetration area.
Here, the through-hole area of the through-hole portion means the smallest area among the areas of the respective cross-sections (cross-sections perpendicular to the plate thickness direction) of the through-hole portion. For example, the through-hole portion having the smallest opening portion The penetrating area is the cross-sectional area of the minimum opening. Further, the total through-area of the through-hole portion of the plate-like body means the sum of the through-areas of all the through-hole portions constituting the fluid flow passage. For example, there are 4 through-hole portions constituting one flow passage. In the case of a piece, it is the sum of the through areas of the four through holes.
[0009]
Further, it is preferable that one of the two adjacent plate-like bodies is disposed on the downstream side of the fluid from the other plate-like body.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, when individually explaining a plurality of plate-like bodies, in addition to the symbol “3” indicating the plate-like bodies, alphabets “a, b. ing.
<First Embodiment>
In the first embodiment, a detailed description will be given of a mode in which a fluid flow path between two arbitrarily selected plate-like bodies is constituted by a plurality of through-hole portions and a single through-hole portion. .
FIG. 1A is a longitudinal sectional view of the static mixing device 1, and FIG. 1B is a front view of the plate-like bodies 3 arranged side by side as viewed from the upstream side of the fluid. FIG. 2 is a front view and a sectional view of the first and third plate-

like bodies

3a and 3c, and FIG. 3 is a front view and a sectional view of the second plate-like body 3b.
[0011]
In FIG. 1, reference numeral 1 denotes a static mixing apparatus according to the present invention. The device 1 includes a cylindrical case body 2 and a plurality of plate-like bodies 3 provided in the case body 2.
[0012]
The case body 2 includes two cylindrical bodies 7 each having a housing portion for housing and holding the plate-like body 3 and having a pipe connection portion 5 at one end and a flange portion 6 at the other end. The flange portions 6 of the two cylindrical bodies 7 are brought together with the packing 4 interposed therebetween, and are hermetically integrated by a detachable fastener 8. Then, the plate-like body 3 can be taken out by removing the fastener 8 and separating the two cylindrical bodies 7. In the figure, reference numeral 10 denotes a plate-shaped rotation preventing insertion rod that can be inserted into and removed from the positioning hole of each plate-shaped body, and 11 is a ring that adjusts the gap of the storage portion according to the number of plate-shaped bodies. The shape of the spacer is shown.
[0013]
In the case body 2, at least two or more plate-like bodies 3 are juxtaposed with the plate surfaces of adjacent plate-like bodies 3 in contact with each other.
In the present embodiment, three plate-like bodies 3 are arranged side by side, and each plate-like body 3 is formed with a through-hole portion 9 penetrating from one surface side to the other surface side. Each plate-like body 3 has the same shape and the same size, and is formed in a disk shape that can be inserted into and removed from the cylindrical case body 2. In addition, two adjacent plate-like bodies 3 arbitrarily selected from the three plate-like bodies 3 have one plate-like body 3 having a plurality of through-hole portions 9 and the other plate. The body 3 has one through hole 9. The flow path R between the two adjacent plate-like bodies 3 by the plurality of through-hole portions 9 of the one plate-like body 3 and the one through-hole portion 9 of the other plate-like body 3. Is configured.
[0014]
Specifically, the first and third plate-

like bodies

3a and 3c corresponding to one plate-like body are the same in order from the upstream side of the fluid, and four through-hole portions 9 are formed respectively. ing. The second plate body 3b corresponding to the other plate body has one through-hole portion 9 formed therein. As shown in FIGS. 2 and 3, each through-hole portion 9 has a circular surface opening 12 and a back surface opening 13 having the largest area at the relative positions of the surface and the back surface of the plate-like body 3, and A minimum opening 14 having a minimum penetrating area is formed in the middle of the plate thickness direction, and the diameter-reducing opening 15 gradually decreases in diameter from the front surface opening 12 and the back surface opening 13 toward the minimum opening 14. Is a continuous shape (generally a drum shape as a whole).
And the through-hole part 9 of any plate-like body 3 is also formed in the same shape and the same size. Accordingly, the total penetration area of the through-hole portion 9 of the first or third plate-

like body

3a, 3c is four times as large as the total penetration area of the through-hole portion 9 of the second plate-like body 3b.
[0015]
Further, the through-hole portions 9 of the first and third plate-

like bodies

3 a and 3 c are arranged at radial positions from the center of the plate-like body 3 so that the peripheral edges of the front surface opening portion 12 and the back surface opening portion 13 are in contact with each other. Has been. On the other hand, the through hole 9 of the second plate-like body 3 c is formed so as to coincide with the center of the plate-like body 3. Accordingly, when the three plate-like bodies 3 are arranged in the case body 2, as shown in FIG. 1 (b), the first and third plate-

like bodies

3a and 3c and the second plate-like body 3b are arranged. The center point of the through-hole part 9 becomes a different position.
[0016]
The magnitude | size of the minimum opening part 14 of the through-hole part 9 is not specifically limited, It can set variously according to the fluid to flow. For example, when a liquid-liquid is used as a fluid, the dimension is preferably such that a circle having a diameter of 0.1 mm or more can be formed, and more preferably a dimension capable of forming a circle having a diameter of 0.5 mm or more. Further, when the gas is used as a fluid, it can be formed extremely small.
[0017]
Further, the sizes of the front surface opening 12 and the back surface opening 13 of the through hole 9 are not particularly limited. However, even if the plate surfaces of the plate-like bodies 3 are brought into contact with each other and arranged in parallel, the fluid is not supplied to the through hole 9. In such a manner that the peripheral edge of the back surface opening 13 of one plate-like body 3 and the peripheral edge of the surface opening portion 12 of the other plate-like body 3 intersect each other. Is formed. Therefore, the fluid that has passed through each through-hole portion 9 of the first plate-like body 3a gathers in one through-hole portion 9 of the second plate-like body 3b, and further, the fluid of the third plate-like body 3c. A flow path R of one route is formed in the three plate-like bodies 3 so as to divert to each through-hole portion 9.
[0018]
  Next, the usage example of the said static type mixing apparatus 1 is shown in FIG.
  In FIG. 4, P is a pump for delivering fluid, T is a tank for storing fluid, S is a piping section such as an inlet pipe and an outlet pipe,ArrowIndicates the direction of fluid flow.
  The fluid to be mixed is not particularly limited as long as it is a substance that can flow, and the same or different liquid-liquid, gas-liquid, solid-liquid, gas-gas, solid-gas, gas-liquid-solid, etc. Two or more things can be used in combination.
[0019]
Two or more kinds of fluids preliminarily mixed may be charged into the tank T, or a plurality of tanks T may be prepared and charged separately. Moreover, you may make it throw in suitably in the middle of the piping S.
[0020]
When the pump P is operated, the fluid is pumped from the tank T through the feed pipe S into the case body 2 of the device 1. The pressure of the fluid is not particularly limited, but the higher the pressure, the higher the fluid mixing efficiency, and a dispersion composed of fine particles can be obtained.
[0021]
The fluid fed into the case body 2 flows through the flow path R formed by the through-hole portions 9 of the plate-like bodies 3. Specifically, as shown by the arrows in FIG. 5, the fluid hits the surface of the first plate-like body 3 a and diverts to the four through-hole portions 9 of the plate-like body 3 a. Further, the fluid that has passed through each through-hole portion 9 of the first plate-like body 3a hits the surface of the second plate-like body 3b and creates a complicated flow with vortices, while one of the plate-like bodies 3b. After gathering in the through-hole portions 9, the surface of the third plate-like body 3 c is similarly hit and divided into four through-hole portions 9 and sent out from the delivery pipe S to the outside of the apparatus 1.
[0022]
According to this apparatus 1, fluid can be mixed efficiently. Furthermore, for example, when fluids having no compatibility (for example, water and oil) are circulated, a finer particle dispersion can be obtained.
Although this effect is not clear, when the fluid passes through the through-hole portion 9, the fluid expands and contracts, violently collides with each other or the plate-like body, and becomes a complicated flow with a vortex, which causes cavitation. it is conceivable that.
Furthermore, when passing through the second plate-like body 3b, the separated fluid collects in one through-hole portion 9, and after that, a strong shearing force acts on the fluid by dividing it again into a plurality of parts. Conceivable. Further, the total through area of the through-hole portion 9 of the second plate-like body 3b is very small compared to the total through-area of the through-hole portion 9 of the first or third plate-

like body

3a, 3c. Since the flow velocity when passing through the through-hole portion 9 of the second plate-like body 3b becomes extremely fast, it is considered that the fluid hits the surface of the third plate-like body 3c more strongly and the fluid is crushed. It is done.
[0023]
<Modification of First Embodiment>
In the said 1st Embodiment, although the flow path R comprised through each plate-shaped body 9 illustrated the thing of only one route, this can also be comprised in a several route.
For example, as an example of constituting two routes of flow passages R1 and R2, as shown in FIGS. 6 and 7, two (a plurality of) through-hole portions 9 are provided in the second plate-like body 3b with a space therebetween. Four (a plurality of) through-hole portions 9 are formed in the first and third plate-

like bodies

3a and 3c so as to correspond to the respective through-hole portions 9 of the second plate-like body 3b. An apparatus 1 or the like in which three plate-like bodies 3 are formed and arranged in contact with each other is exemplified. The device 1 according to this modification also has the same effect as described above.
[0024]
Thus, if the flow path R comprised by the through-hole part 9 of each plate-shaped body 3 is comprised substantially independently independently, the plate-shaped body in which the several through-hole part 9 was structurally formed 3 (the second plate-like body 3b and the like) can also be used.
Thus, the plate-like body 3 having one through-hole portion 9 is not limited to the structural meaning that one through-hole portion 9 is formed in the plate-like body 3, and is substantially independent. The meaning of having one through-hole portion 9 for one flow passage R is also included. In other words, the flow path R (one of the flow paths when a plurality of flow paths are configured) between the two adjacent plate-like bodies 3 that are arbitrarily selected is a plurality of through holes. What is necessary is just to be comprised by the part 9 and the one through-hole part 9. FIG.
[0025]
Moreover, in 1st Embodiment, although the three plate-shaped bodies 3 were arranged in parallel and the 2nd plate-shaped body 3b illustrated the apparatus 1 which has the one through-hole part 9, plate-shaped body 3 was shown. The number and the number of through-hole portions 9 and the arrangement of the plate-like body 3 having one through-hole portion 9 can be appropriately changed in design. For example, various combinations are illustrated in Table 1 below.
[0026]
[Table 1]

[0027]
In Table 1, Examples 1 and 2 are two plate-like bodies, Examples 3 and 4 are three plate-like bodies, Examples 5 and 6 are four plate-like bodies, and Examples 7 and 8 are It shows a combination of five plate-like bodies. Examples 5, 7, and 8 show the case where two (a plurality) plate-like bodies having one through-hole portion are provided. Moreover, except for Example 2, the plate-like body having one through-hole portion is arranged on the upstream side of the fluid from the plate-like body having a plurality of through-hole portions. Thus, it is preferable to arrange the plate-like body 3 having one through-hole portion 9 on the upstream side because the fluid mixing efficiency is further improved.
[0028]
Furthermore, in the first embodiment, in order to increase the fluid flow velocity, the total through-area of the through-hole portion 9 of the first or third plate-

like body

3a, 3c is equal to the through-hole portion 9 of the second plate-like body 3b. However, the relationship of the total penetration area is not limited to this. Among two adjacent plate-like bodies arbitrarily selected from at least two plate-like bodies 3, the total penetrating area of one plate-like body 3 is the total penetrating area of the other plate-like body 3. What is necessary is just to form so that it may become 5 times or more, preferably 2 times or more. In addition, the larger the difference in the total penetrating area between the one plate-like body 3 and the other plate-like body 3, the faster the fluid can flow. Therefore, the upper limit is not particularly limited, but the difference in the total penetrating area is too large. In consideration of this point, the total penetration area of one plate-like body 3 should be 100 times or less, preferably 10 times or less than the total penetration area of the other plate-like body 3. That's fine.
In addition, the total penetration area of each plate-like body 3 is made the same, or the total penetration area of the plate-like body 3 having one through-hole portion 9 is made larger than the total penetration area of the other plate-like bodies 3. May be.
[0029]
Further, as shown in FIG. 8, as the plate-like body 3 having one through hole portion 9, the front surface opening portion 12 and the back surface opening portion 13 of the through hole portion 9 are made large openings and the reduced diameter opening portion 15 is formed. A plate-like body 3 having an inclination angle θ formed at an acute angle with respect to the plate surface may be used. In the device 1 in which the plate-like bodies 3 according to this modification are arranged side by side, as shown in FIG. 8B, a very large number of through-hole portions 9 are formed in the adjacent plate-

like bodies

3a and 3c. However, the fluid flowing out from a large number of through-hole portions 9 of the upstream plate-like body 3a is gathered into one through-hole portion, and is divided into a large number of through-hole portions 9 of the downstream-side plate-like body 3c. This is preferable.
[0030]
Second Embodiment
In the second embodiment, all the plate-like bodies 3 have a plurality of through-hole portions 9, and one flow path R is configured by the plurality of through-hole portions 9. And different.
Parts different from those of the first embodiment will be mainly described, and descriptions of parts common to the first embodiment will be omitted as appropriate, and names and drawing numbers of each part may be used.
[0031]
The apparatus 1 of this embodiment relates to two adjacent plate-like bodies 3 arbitrarily selected from at least two plate-like bodies 3, and the total through-area of the through-hole portion 9 of one plate-like body 3 is the same. The other plate-like body 3 is formed to be 1.5 times or more, preferably 2 times or more the total penetration area of the through-hole portion 9 of the plate-like body 3.
[0032]
Specifically, as shown in FIG. 9, the apparatus 1 has two plate-like bodies 3 arranged in parallel within a case body 2. As shown in FIG. 10, the first plate-like body 3a corresponding to the other plate-like body has four through-hole portions 9 formed therein, and the second plate-like body corresponding to the one plate-like body. As shown in FIG. 11, the body 3b has five through-hole portions 9 formed therein. And each through-hole part 9 is each equal so that the center point of the through-hole part 9 of the 1st plate-shaped body 3a and the 2nd plate-shaped body 3b may become a different position (shown in FIG.9 (b)). Has been placed.
Further, the through area (minimum opening 14) of the through hole portion 9 of the first plate-like body 3a is formed to be 1/4 of the through area of the through-hole portion 9 of the second plate-like body 3b. ing. Therefore, the second plate-like body 3b has a total penetrating area five times that of the first plate-like body 3a.
[0033]
When fluids are mixed using such a static mixing device 1, the same mixing effect as in the first embodiment can be obtained. This is because the fluid causes cavitation, and the total penetration area of the through-hole portion 9 of the first plate-like body 3a is much smaller than the total penetration area of the through-hole portion of the second plate-like body 3b. Is small (specifically, a ratio of 1: 5), the flow velocity when passing through the through-hole portion 9 of the first plate-like body 3a becomes extremely fast, and the fluid strongly hits the second plate-like body 3b. This is thought to be due to crushing.
[0034]
<Modification of Second Embodiment>
The number of plate-like bodies 3, the number of through-hole portions 9, the through-area of the through-hole portions 9, the ratio of the total through-area of each plate-like body 3 and the like shown in the second embodiment can be appropriately changed. For example, Table 2 illustrates various combinations. The ratio of the total through area can be changed as appropriate by changing the size of the through hole part or the number of the through hole parts.
[0035]
[Table 2]

[0036]
In Table 2, Example 1 has two plate-like bodies, Example 2 has three plate-like bodies, Examples 3 and 4 have four plate-like bodies, and Example 5 has five plate-like bodies. Indicates a combination of bodies. Further, except for Example 1, plate-like bodies having a ratio of total penetrating area of 1 are arranged on the upstream side, and these are preferable examples because the fluid mixing efficiency is further improved.
[0037]
<Modification common to each embodiment>
(About plate-shaped body)
In each of the above embodiments, the adjacent plate-like bodies 3 have the advantage that the fluid can be circulated at a higher speed because the plate surfaces are arranged side by side in contact with each other. You may set up. In each of the above embodiments, the adjacent plate-like bodies 3 are arranged side by side vertically with respect to the flow direction. However, it is not always necessary to arrange them side by side as described above. It suffices if the flow path R is secured in parallel so as to flow from the plate-like body 3 to the plate-like body 3 on the downstream side.
[0038]
Moreover, in each said embodiment, although the plate-shaped body 3 is formed in the disk shape, it is not limited to this shape, A square disk shape etc. may be sufficient. However, in order to obtain a uniform flow, it is preferable that the thickness is constant, the surface is smooth, and the inner shape of the case body 2 is adapted. The plate-like body 3 can be manufactured by a known method such as cutting, casting, or sintering.
[0039]
(About the shape of the through hole)
The through-hole portion 9 of each of the above embodiments has a circular cross section (cross section) shape that is perpendicular to the plate thickness direction, but is not limited to this cross section shape. A shape such as a circle, a triangle, a quadrangle, a trapezoid, a star, and other polygons may be used. Among these, the cross-sectional shape is preferably a regular polygon such as a circle or a square or a rectangle. Furthermore, the cross-sectional shape of the through-hole portion 9 in each of the above embodiments is circular throughout the thickness direction, but the combined shape of different shapes (for example, the cross-sectional shape of the front surface opening 12 and the back surface opening 13 is a quadrangle) The cross-sectional shape of the minimum opening 14 may be circular.
[0040]
Moreover, although the through-hole part 9 of each said embodiment is a shape as shown in FIG.2 (b) in the cross section (vertical cross section) shape along a plate | board thickness direction, this vertical cross section shape is limited to this. For example, a straight line perpendicular to the plate surface as shown in FIG. 12 (a), a straight line oblique to the plate surface as shown in (b), a curved shape as shown in (c), (d) A linear shape in which the interval as shown in FIG. 5 is expanded, a linear shape in which the interval is reduced as shown in (e), a linear shape in which the interval is reduced as shown in (f) and a linear shape perpendicular to the plate surface, A straight line shape perpendicular to the plate surface as shown in (g) and a straight line shape in which the interval is increased, or any other shape as shown in (h) may be used.
A part of the overall shape of the through-hole portion 9 that combines these various cross-sectional shapes and vertical cross-sectional shapes is illustrated in FIGS.
[0041]
Further, the plate-like body 3 is not necessarily limited to the one having the same shape and / or through-hole portion 9 of the through-area, and the shape and / or through-area of the through-hole portion 9 of each plate-like body 3 is different. It may be a thing. For example, the shape of the through-hole portion 9 in each plate-like body 3 is such that the through-hole portion 9 of the first plate-like body 3a is circular and the through-hole portion 9 of the second plate-like body 3b is square. You may change suitably.
[0042]
(About the arrangement of the through hole)
Each plate-like body 3 is preferably arranged so that the center points of the through-hole portions 9 of the adjacent plate-like bodies 3 are different from each other as in the above-described embodiments. Among them, a part of the through-hole portions 9 may be arranged so as to coincide with the center point of the through-hole portions 9 of the adjacent plate-like bodies 3. If it arrange | positions so that the center point of all the through-hole parts 9 of the adjacent plate-shaped body 3 may correspond, fluid will flow, without colliding substantially with the surface of a downstream plate-shaped body, but all the through-holes This is because if the center points of the portions 9 do not match, a shearing action due to a collision can be expected.
[0043]
(About the case body)
The case body 2 of each of the above embodiments is exemplified by a structure in which two cylindrical bodies 7 are integrated. However, the present invention is not limited to this, and the design can be changed as appropriate, for example, a single cylindrical body. It is. Further, the cross-sectional shape of the case body 2 may be various shapes such as a square and a polygon in addition to a circle.
Moreover, in this apparatus 1, a case body is not necessarily required, for example, you may comprise the apparatus 1 by attaching the plate-shaped body 3 directly in the middle of the piping part S newly or existing. Specifically, as shown in FIG. 14, ring-shaped flange portions 17 that can come into contact with the surface of the plate-like body 3 are provided at the end portions of the feeding pipe S and the sending pipe S, and There can be exemplified such that at least two or more plate-like bodies 3 are arranged in parallel through a packing, and these are hermetically integrated with a fastening tool 18 such as a screw rod and a nut.
[0044]
(Materials for cases and plates)
The case body 2 and the plate-like body 3 used in the above embodiments are not particularly limited as long as they have a material or structure having mechanical strength that can withstand the pressure of the fluid. For example, the case body 2 and the plate body 3 are made of metal such as stainless steel or ceramic. A synthetic resin such as engineering plastic can be used as appropriate. Further, those having a smooth inner surface and those having corrosion resistance are preferred.
[0045]
(About usage examples)
As an example of use of the device 1 of each of the above embodiments, the method shown in FIG. 4 is illustrated. However, for example, as shown in FIG. 15, a plurality of devices 1 may be arranged in series or in parallel. If necessary, it is also possible to use a static mixer having a different mixing method such as a Kenix type. A plurality of tanks T and pumps S may be used.
Further, normally, when the fluid is passed once, the fluid is sufficiently mixed. However, the fluid may be circulated through the device 1 a plurality of times and circulated as necessary. In this case, a switching valve or the like may be provided in the middle of the delivery pipe, and a return pipe S1 may be provided separately as shown in FIG.
[0046]
【Example】
Hereinafter, the present invention will be described in further detail with reference to Examples and Comparative Examples.
Examples and comparative examplesUsed the following.
(1) Used fluid and mixing ratio
Fluid 1: Tap water ... 95 parts by weight
Fluid 2: White squeezed oil (manufactured by Showa Sangyo Co., Ltd., trade name: soybean white squeezed oil): 5 parts by weight
Fluid 3: Emulsifier (manufactured by Kao Corporation, trade name: Rheodor Super TW-O120) ... 0.5 parts by weight
(2) Equipment used for particle size measurement
Laser diffraction / scattering particle size distribution measuring device (LA-300 type), manufactured by HORIBA, Ltd.
[0047]
(3) Used plate-like body (the main part is shown in Table 3)
Plate-like body {circle around (1)}: a shape having four through-hole portions shown in FIG. Diameter L ... 6 (mm) of front surface opening and back surface opening. Minimum opening M ... 2 (mm). Plate thickness D ... 5 (mm). Inclination angle θ of the reduced diameter opening: 45 degrees. Through area ... π (mm²). Total penetration area: 4π (mm²).
Plate-shaped body (2): a shape having one through-hole portion shown in FIG. Diameter L ... 6 (mm) of front surface opening and back surface opening. Minimum opening M ... 2 (mm). Plate thickness D ... 5 (mm). The inclination angle θ of the reduced diameter opening portion 45 (degrees). Through area ... π (mm²). Total penetration area ... π (mm²).
Plate-shaped body (3): a shape having one through-hole portion shown in FIG. Diameter L ... 25 (mm) of front surface opening and back surface opening. Minimum opening M ... 4 (mm). Plate thickness D ... 5 (mm). The inclination angle θ of the reduced diameter opening portion 11 (degrees). Through area ... 4π (mm²). Total penetration area: 4π (mm²).
Plate-shaped body (4): a shape having four through-hole portions shown in FIG. Diameter L ... 6 (mm) of front surface opening and back surface opening. Minimum opening M ... 1 (mm). Plate thickness D ... 5 (mm). The inclination angle θ of the reduced diameter opening portion 45 (degrees). Through area ... 0.25π (mm²). Total penetration area ... π (mm²).
Plate-shaped body (5): a shape having five through-hole portions shown in FIG. Diameter L ... 6 (mm) of front surface opening and back surface opening. Minimum opening M ... 2 (mm). Plate thickness D ... 5 (mm). The inclination angle θ of the reduced diameter opening portion 45 (degrees). Through area ... π (mm²). Total penetration area: 5π (mm²).
[0048]
[Table 3]

[0049]
Example 1
Example 1 has three plate-like bodies of a plate-like body (1), a plate-like body (2), and a plate-like body (1) in order from the upstream side in the cylindrical case body shown in FIG. Were used side by side in contact.
As shown in FIG. 4, a tank and a pump are installed, and about 10 liters (a liquid temperature of 30 ° C.) of a mixture of fluids 1 to 3 preliminarily mixed with a stirring rod is put into the tank and 3 (MPa ) Was pressed into the apparatus at a pressure of 1) and circulated once in the apparatus. The operation was continued for about 2 minutes, and the particle size of the fluid obtained after about 1 minute was measured. In addition, when the flow rate was measured using a stopwatch and a graduated cylinder and divided by the cross section of the flow path, the flow velocity was measured, and in the through hole portion of the second plate (1), 246.0 (m / s) In the through hole portion of the third plate-like body (2), it was 61.5 (m / s).
Table 4 shows the test results of each example and comparative example. Except for Comparative Example 2, no great difference was observed in the particle size distribution.
[0050]
[Table 4]

[0051]
Example 2
In Example 2, an apparatus in which three plate bodies of a plate-like body (1), a plate-like body (5), and a plate-like body (2) were arranged side by side in order from the upstream side was used. And the mixture of the fluids 1-3 was poured like Example 1, and the particle diameter was measured. The flow rate at the through hole portion of the first plate-like body (1) is 164.0 (m / s), and the flow rate at the through-hole portion of the second plate-like body (5) is 131.0 (m / s). m / s).
Example 3
In Example 3, an apparatus in which two plate-like bodies of the plate-like body (5) and the plate-like body (3) were arranged in contact with each other in order from the upstream side was used. And the mixture of the fluids 1-3 was poured like Example 1, and the particle diameter was measured. The flow rate at the through hole portion of the first plate-like body (5) is 127.0 (m / s), and the flow rate at the through-hole portion of the second plate-like body (3) is 159.0 (m / s). m / s).
Example 4
In Example 4, an apparatus in which two plate-like bodies of plate-like body (4) and plate-like body (5) were arranged in contact with each other in order from the upstream side was used. And the mixture of the fluids 1-3 was poured like Example 1, and the particle diameter was measured. The flow velocity at the through hole portion of the first plate-like body (4) is 246.0 (m / s), and the flow velocity at the through-hole portion of the second plate-like body (5) is 49.2 ( m / s).
[0052]
Comparative Example 1
In Comparative Example 1, a plurality of through-hole portions are formed in each plate-like body, and the total penetration area of each plate-like body is substantially equal, and the plate-like body {circle over (5)}, plate-like in order from the upstream side A device in which the two plate-like bodies of the body (1) were arranged side by side in contact was used. And the mixture of the fluids 1-3 was poured like Example 1, and the particle diameter was measured. The flow rate at the through-hole portion of the first plate-like body (5) is 157.0 (m / s), and the flow rate at the through-hole portion of the second plate-like body (1) is 196.0 ( m / s).
Comparative Example 2
In Comparative Example 2, an apparatus having only one plate-like body (2) was used. And the mixture of the fluids 1-3 was poured like Example 1, and the particle diameter was measured. The flow rate at the through hole of the first plate-like body (2) was 259.0 (m / s).
[0053]
As is apparent from Table 4, it can be seen that in each Example, white squeezed oil is dispersed as finer particles.
Moreover, when Example 3 and Comparative Example 1 are compared, the number of plate-like bodies and the total penetration area of the first plate-like body and the second plate-like body coincide with each other, but a plate having one through-hole portion. Example 3 using a solid body is superior. Furthermore, when Example 4 and Comparative Example 1 are compared, the number of plate-like bodies and the number of through-hole portions are substantially the same, but Example 4 using a plate-like body having a small total penetrating area is superior. Yes. Further, when Example 1 is compared with Example 2, Example 1 is superior, so that a plate-like body having one through-hole portion is more than a plate-like body having a plurality of through-hole portions. It can also be seen that it is preferable to arrange them upstream.
[0054]
【The invention's effect】
As described above, the static mixing device of the present invention is more excellent in mixing efficiency than the conventional device, and the fluid can be mixed efficiently only by flowing the fluid. Furthermore, a finer particle dispersion can be produced.
In addition, according to the apparatus of the present invention, even if the amount of fluid to be processed is small, it can be sufficiently mixed and a fine particle dispersion can be produced.
[Brief description of the drawings]
FIG. 1A is a longitudinal sectional view of a static mixing device according to a first embodiment, and FIG. 1B is a front view of plate-like bodies arranged in a case body as viewed from the upstream side of a fluid. Indicates.
2A is a front view of the first and third plate-like bodies according to the first embodiment, FIG. 2B is a cross-sectional view taken along line AA, and FIG. A line sectional view is shown.
3A is a front view of a second plate-like body according to the first embodiment, and FIG. 3B is a cross-sectional view taken along line AA.
FIG. 4 is a conceptual diagram showing a usage example of the apparatus.
FIG. 5 is a partially omitted longitudinal sectional view showing a usage state of the static mixing device according to the first embodiment.
6A is a front view showing a modification of the second plate-like body, FIG. 6B is a front view showing a modification of the first and third plate-like bodies, and FIG. The front view which looked at the state which arranged these in parallel from the upstream of the fluid is shown.
7 is a partially omitted longitudinal sectional view showing a usage state of a static mixing device in which the plate-like bodies of FIG. 6 are arranged side by side.
FIG. 8A is a front view showing another modified example of the second plate-like body, and FIG. 8B is a static mixing system in which it is arranged in parallel between the first and third plate-like bodies. FIG.
9A is a longitudinal sectional view of a static mixing device according to a second embodiment, and FIG. 9B is a front view of the plate-like bodies arranged side by side as viewed from the upstream side of the fluid. The figure is shown.
10A is a front view of the first plate-like body according to the second embodiment, FIG. 10B is a sectional view taken along line AA, and FIG. 10C is a sectional view taken along line BB. Indicates.
11A is a front view of a second plate-like body according to the second embodiment, and FIG. 11B is a sectional view taken along line AA.
FIGS. 12A to 12H are partially omitted longitudinal sectional views showing various modified examples of the longitudinal sectional shape of the through-hole portion of the plate-like body.
FIGS. 13A to 13L are perspective views showing various modifications of the overall shape of the through-hole portion.
FIG. 14 is a partial longitudinal sectional view showing a modification of the apparatus not using the case body (only the piping portion is shown in cross section).
FIGS. 15A and 15B are conceptual diagrams showing other usage examples of the present apparatus. FIGS.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Static type mixing apparatus, 2 ... Cylindrical case body, 3 ... Plate-shaped body, 3a ... 1st plate-shaped body, 3b ... 2nd plate-shaped body, 3c ... 3rd plate-shaped body, 9 ... Through-hole Hole: 12 ... Front opening, 13 ... Back opening, 14 ... Minimum opening, 15 ... Reduced diameter opening, R ... Flow passage, P ... Pump, T ... Tank

Claims

A stationary mixing apparatus comprising at least two plate-like bodies having through-hole portions, and mixing the fluid by circulating fluid through the through-hole portions of each plate-like body,
One of two adjacent plate-like bodies arbitrarily selected from the plate-like bodies has a plurality of through-hole portions, and the other plate-like body has one through-hole portion. And
The through hole has a front opening and a back opening formed on the front and back surfaces of the plate-like body, and a minimum opening having a minimum penetrating area in the middle of the plate thickness direction. It is a shape in which a reduced diameter opening portion that gradually decreases in diameter as it goes from the opening portion and the back surface opening portion to the minimum opening portion is continuously provided,
The plurality of through-hole portions of the one plate-like body are arranged so that the peripheral edges of the front surface opening portion and the back surface opening portion are in contact with each other,
The center point of each through-hole portion of the one plate-like body is different from the center point of the through-hole portion of the other plate-like body, and the front surface opening or the back surface opening of each through-hole portion of one plate-like body The one plate-like body and the other plate-like body are juxtaposed in contact with each other so that the peripheral edge of the portion intersects the back surface opening of the through-hole portion of the other plate-like body or the peripheral edge of the front-surface opening. A static mixing device characterized by that.

The static mixing device according to claim 1, wherein a total through area of the through hole portion of the one plate-like body is 1.5 times or more of a total through area of the through hole portion of the other plate-like body.

The stationary mixing device according to claim 1 or 2, wherein the through-hole portions of the two adjacent plate-like bodies have the same penetration area.

The stationary mixing device according to any one of claims 1 to 3, wherein, of the two adjacent plate-like bodies, one plate-like body is provided on the downstream side of the fluid from the other plate-like body. .