JP3877450B2

JP3877450B2 - Powder processing equipment

Info

Publication number: JP3877450B2
Application number: JP29536298A
Authority: JP
Inventors: 久登永徳; 賢治竹林
Original assignee: Hosokawa Micron Corp
Current assignee: Hosokawa Micron Corp
Priority date: 1998-10-16
Filing date: 1998-10-16
Publication date: 2007-02-07
Anticipated expiration: 2018-10-16
Also published as: JP2000117083A

Description

【０００１】
【発明の属する技術分野】
本発明は、鉛直方向に沿った回転軸心の回りに回転自在であり、被処理物が押し付けられる受け面を内周部に有する筒状回転体と、前記受け面に近接するよう前記筒状回転体の内部に配置したインナーピースとを備えた粉体処理装置に関する。
【０００２】
【従来の技術】
従来、この種の粉体処理装置としては、例えば、被処理物を処理するための処理空間を形成する筒状回転体を設けておき、当該筒状回転体を回転駆動して被処理物を前記筒状回転体の内周部に形成した受け面に押し付けつつ、前記筒状回転体の内部に設けたインナーピースを用いて、前記受け面と前記インナーピースとの協働によって粉粒体に押圧力あるいはせん断力を付与するものがあった。
当該従来の装置によって、被処理物である例えば粉粒体どうしの粗混合や複合化の他、精密混合あるいは粉粒体の形状制御等の各種処理を行っていた。
このうち特に、複合化とは、複数の原料を混ぜ合わせたものに加圧力およびせん断力を加えて特定の原料の表面に他の原料を融合し、一体化することをいう。
また、精密混合とは、異種の原料を単一粒子レベルで均一に分散させた状態に混合することをいう。
さらに、形状制御とは、例えば、複数の原料に加圧力あるいはせん断力を作用させて、球状を有しない特定の原料の表面に他の原料を付着させ、当該特定の原料を球状に整形すること等をいう他、球状を有しない原料に加圧力等を作用させてその一部を破砕し、当該原料を球状に整形すること等をいう。尚、これらの処理を総称してメカノフュージョン処理という場合もある。
【０００３】
【発明が解決しようとする課題】
上記従来の装置では、粉体を処理する毎に筒状回転体の内部に被処理物である粉体を所定量だけ投入する所謂バッチ処理を行っていた。よって、被処理物の処理能力に一定の制限があった。
また、被処理物は前記筒状回転体の受け面に固着して完全に処理されないものが残存する等、品質が安定した製品を得ることが困難であった。
さらに、上記のごとくバッチ処理を行うものであったから、被処理物の投入・取出し操作あるいは装置の洗浄が煩雑であり、処理空間内部の雰囲気制御も困難である等多くの改良すべき点を有していた。
【０００４】
本発明の目的は、上記従来の問題点を解消し、被処理物の処理能力および操作性に優れた粉体処理装置を提供することにある。
【０００５】
【課題を解決するための手段】
〔構成１〕
本発明の粉体処理装置は、請求項１に示すごとく、前記筒状回転体３を内部に備え、前記被処理物４を処理するための処理空間９を形成するケーシング２を有し、受け面６とインナーピース５との間に形成する押圧部７に被処理物４を保持するための被処理物保持手段Ｓ１を有すると共に、前記押圧部７に保持された前記被処理物４の一部を、前記筒状回転体３が駆動回転している際に前記筒状回転体３の内包空間３ａの外部に排除するための被処理物排除手段Ｓ２を有し、前記被処理物排除手段Ｓ２を、前記受け面６に貫通形成した孔部２０によって構成し、前記ケーシング２の内面形状に対応する形状に形成されるとともに前記筒状回転体３の外周下方部に設けられ、前記被処理物排除手段Ｓ２によって排除された前記被処理物４を前記押圧部７に循環させる羽根部材２３を有する点に特徴を有する。
〔作用効果〕
本構成のごとく、受け面とインナーピースとの間に形成する押圧部に被処理物を保持するための被処理物保持手段を設けておけば、押圧部に被処理物を確実に保持して被処理物に押圧力を付与するから、被処理物の処理効率を向上させることができる。
また、前記押圧部に保持された被処理物の一部は、筒状回転体が駆動回転している最中に、被処理物排除手段によって筒状回転体の内包空間の外部に排除される。具体的には、被処理物排除手段により筒状回転体の外部に排除された被処理物は、ケーシングの内面形状に対応する形状に形成されるとともに筒状回転体の外周下方部に設けられた羽根部材により、円滑かつ確実に、前記押圧部に再び循環させられることとなる。つまり、押圧部の被処理物が順次入れ替えられ、装置の内部に投入した被処理物の全体が均等に処理される結果、得られる製品の品質が極めて安定したものとなる。
さらに、本発明の装置では、筒状回転体の内包空間だけでなく筒状回転体の外部にも被処理物を貯溜することができる。このため、一回のバッチ処理に際して従来の粉体処理装置よりも多量の被処理物を装置の内部に投入することができ、被処理物の処理効率をさらに向上させることができる。
そして、筒状回転体は高速で回転するから、押圧部に存在する被処理物には強い遠心力が作用する。同時に、押圧部の被処理物にはインナーピースによる外方への押圧力も作用する。よって、本構成のごとく前記受け面に孔部を貫通形成しておけば、被処理物は筒状回転体の外方に容易に移動して被処理物の排除が非常に円滑に行われる。この結果、押圧部に存在する被処理物の入れ替えが速やかに且つ確実に行われて、被処理物の処理速度が向上し、製品の品質がさらに安定する。
【０００６】
〔構成２〕
本発明の粉体処理装置は、請求項２に示すごとく、前記被処理物保持手段Ｓ１を、前記筒状回転体３の上下縁のうち少なくとも何れか一方に設け、かつ、前記回転軸心Ｘの側に折れ曲がった折曲り部２１によって構成することができる。
〔作用効果〕
インナーピースによって受け面の側に押圧された被処理物は、例えば受け面の上方側あるいは下方側に移動して押圧部の外部に逃げようとする。被処理物のこのような動きを上記折曲り部により拘束することで、被処理物が押圧部に滞在する時間を増大させ、粉体処理の効率をより向上させることができる。
【０００７】
〔構成３〕
本発明の粉体処理装置は、請求項３に示すごとく、前記孔部２０を略半円形状に構成すると共に、前記受け面６の最下部に設けておくことができる。
〔作用効果〕
押圧部に存在する被処理物には前述のごとく遠心力とインナーピースによる押圧力とが作用するが、その他に重力も作用する。よって、例えば被処理物が非常に流動性に富んでいる場合には、押圧部のうちでも特に下方側に流動し易い。そこで、本構成のごとく前記孔部を略半円形状に構成し、前記受け面の最下部に設けておけば、押圧部の下方側に存在する被処理物をより多く排除することができる。しかも、本構成であれば、受け面に直に接触している被処理物ほど先に筒状回転体の外部に排除されるから、従来装置のごとく、一旦受け面に固着した被処理物は最後まで未処理のままで残存するという不都合は生じない。よって、押圧部に存在する被処理物の入れ替え効果がさらに向上して、粉体処理の処理効率が改善されるのである。
【０００８】
〔構成４〕
本発明の粉体処理装置は、請求項４に示すごとく、前記孔部２０をスリット状に構成すると共に、鉛直方向に沿った当該孔部２０の長さを、同方向における前記受け面６の高さと略同じに形成することができる。
〔作用効果〕
本構成のごとく、鉛直方向に沿って受け面の高さと略同等の長さを有するスリットを設けておけば、押圧部のうち鉛直方向に沿った何れの位置においても、略同じ量の被処理物を排除することが可能となる。よって、例えば、被処理物の流動性が非常に乏しく、前記受け面の略全体に被処理物が付着するような場合でも、被処理物の入れ替えを確実に行うことができ、粉体処理の処理効率を向上させることができる。
【０００９】
〔構成５〕
本発明の粉体処理装置は、請求項５に示すごとく、前記孔部２０を、前記回転軸心Ｘを中心とした周方向に複数形成しておくことができる。
〔作用効果〕
本構成のごとく、前記孔部の数を任意に設定することで、押圧部に存在する被処理物の排除量を適宜設定することができる。例えば、孔部の数を多くするほど被処理物は容易に排除されるから、インナーピースによって付与する押圧力が結果的に弱まることとなる。即ち、粉体処理が速やかに進行する被処理物を扱う場合、あるいは、過大な押圧力を与えたくない被処理物を処理する場合等には、前記孔部を多く設けるのが好ましい。
このように、本構成であれば、被処理物の特性に応じた粉体処理を行うことができる。
【００１０】
〔構成６〕
本発明の粉体処理装置は、請求項６に示すごとく、前記筒状回転体３を内部に備え、前記被処理物４を処理するための処理空間９を形成するケーシング２を有し、受け面６とインナーピース５との間に形成する押圧部７に被処理物４を保持するための被処理物保持手段Ｓ１を有すると共に、前記押圧部７に保持された前記被処理物４の一部を、前記筒状回転体３が駆動回転している際に前記筒状回転体３の内包空間３ａの外部に排除するための被処理物排除手段Ｓ２を有し、前記被処理物保持手段Ｓ１を、前記筒状回転体３の上下縁のうち少なくとも何れか一方に設け、かつ、前記回転軸心Ｘの側に折れ曲がった折曲り部２１によって構成し、前記被処理物排除手段Ｓ２を、前記折曲り部２１に形成した切欠部２４で構成し、前記ケーシング２の内面形状に対応する形状に形成されるとともに前記筒状回転体３の外周下方部に設けられ、前記被処理物排除手段Ｓ２によって排除された前記被処理物４を前記押圧部７に循環させる羽根部材２３を有する点に特徴を有する。
〔作用効果〕
本構成のごとく、受け面とインナーピースとの間に形成する押圧部に被処理物を保持するための被処理物保持手段を設けておけば、押圧部に被処理物を確実に保持して被処理物に押圧力を付与するから、被処理物の処理効率を向上させることができる。
また、前記押圧部に保持された被処理物の一部は、筒状回転体が駆動回転している最中に、被処理物排除手段によって筒状回転体の内包空間の外部に排除される。具体的には、被処理物排除手段により筒状回転体の外部に排除された被処理物は、ケーシングの内面形状に対応する形状に形成されるとともに筒状回転体の外周下方部に設けられた羽根部材により、円滑かつ確実に、前記押圧部に再び循環させられることとなる。つまり、押圧部の被処理物が順次入れ替えられ、装置の内部に投入した被処理物の全体が均等に処理される結果、得られる製品の品質が極めて安定したものとなる。
さらに、本発明の装置では、筒状回転体の内包空間だけでなく筒状回転体の外部にも被処理物を貯溜することができる。このため、一回のバッチ処理に際して従来の粉体処理装置よりも多量の被処理物を装置の内部に投入することができ、被処理物の処理効率をさらに向上させることができる。
そして、インナーピースによって受け面の側に押圧された被処理物は、例えば受け面の上方側あるいは下方側に移動して押圧部の外部に逃げようとする。被処理物のこのような動きを上記折曲り部により拘束することで、被処理物が押圧部に滞在する時間を増大させ、粉体処理の効率をより向上させることができる。
上述したごとく、インナーピースによって押圧された被処理物は受け面の上方側あるいは下方側に移動しようとして前記折曲り部によって拘束されるが、前記折曲り部に切欠部を形成しておき、被処理物の上記移動を一部許容することで、押圧部に存在する被処理物を順次入れ替えることができ、被処理物の全体を均等に処理することができる。
【００１１】
尚、上述のように、図面との対照を便利にするために符号を記したが該記入により本発明は添付図面の構成に限定されるものではない。
【００１２】
【発明の実施の形態】
以下に本発明の実施の形態を図面に基づいて説明する。尚、図面において従来例と同一の符号で表示した部分は、同一又は相当の部分を示している。
【００１３】
（概要）
本発明の粉体処理装置を図１に示す。
本発明の装置は、主に、基台１に設置した略円筒形状のケーシング２、および、当該ケーシング２の内部に設けた同じく略円筒形状の筒状回転体３、当該筒状回転体３との間に押圧力を発生させて被処理物４を処理すべく前記筒状回転体３の内部に配設したインナーピース５とからなる。前記被処理物４は、通常、粉体状の原料を用いるが、スラリー原料や懸濁液状の原料を用いることも可能である。
前記筒状回転体３を回転させることで、当該筒状回転体３の内周面に形成した受け面６と前記インナーピース５とを相対回転させ、前記受け面６と前記インナーピース５との間の押圧部７に存在する被処理物４に押圧力を付与して粉体処理を行うものである。
【００１４】
本発明の装置においては、被処理物４の処理効率を向上させるための被処理物保持手段Ｓ１を備えており、当該被処理物保持手段Ｓ１によって被処理物４をできるだけ前記押圧部７に保持する構成となっている。また、その一方で、前記押圧部７に対して被処理物４を積極的に循環させるための被処理物排除手段Ｓ２を有している。この被処理物排除手段Ｓ２は、前記押圧部７に保持された被処理物４の一部を、筒状回転体３が駆動回転されている最中に筒状回転体の内包空間３ａの外部に排除するものであり、これにより、全ての被処理物４が前記押圧部７に対して順次循環供給されるのである。
【００１５】
（ケーシング）
本装置を構成するケーシング２は、基台１に載置固定した支持部材８によって支持されている。当該ケーシング２の内部には、被処理物４を処理するための処理空間９が形成される。当該ケーシング２はケーシング本体２ａと蓋部材２ｂとからなる。前記蓋部材２ｂは、ケーシング本体２ａに対して着脱自在であり、被処理物投入口１０及びフィルター付き排気口１１を有している。前記ケーシング本体２ａの底部周縁の一部には処理が終了した被処理物４を取り出すための被処理物取出口１２を形成してある。これらの構成により、被処理物４の連続処理が可能である。
尚、ケーシング２の底部２ｃは、外周部ほど下方に位置するように略円錐状に傾斜させてある。これは、ケーシング２の底部２ｃに移行した被処理物４が、後述する筒状回転体３の回転軸部１４と当該底部２ｃとの隙間に侵入して筒状回転体３の回転が阻害されるのを防止するためである。
【００１６】
前記ケーシング２の内部、即ち、前記処理空間９の雰囲気は、被処理物４の種類等に応じて適宜変更することができる。例えば、不活性ガスや加熱ガス等の各種のガスを前記被処理物投入口１０からケーシング２の内部に投入することができるし、加圧・真空ポンプ等を用いてケーシング２の内部を加減圧することも可能である。そのため、本発明に係る粉体処理装置では、例えば、ケーシング２と筒状回転体３の回転軸部１４との間、あるいは、ケーシング２とインナーピース５の縦向き固定軸２２との間にシール部材２７ａ，２７ｂを設けてある。
【００１７】
前記ケーシング２の周囲には、主に前記処理空間９の温度を調節するためのジャケット１３を設けてある。当該ジャケット１３へは、別に設けたタンク（図外）からの加熱媒体又は冷却媒体が必要に応じて循環供給される。勿論、前記ケーシング２の内部温度を積極的に調節する必要がない場合には、加熱媒体などの供給は行わない。
【００１８】
（筒状回転体）
図１に示すごとく、前記ケーシング２の内部には、略円筒形状であって鉛直方向の回転軸心Ｘの回りに回転自在な筒状回転体３を備えている。当該筒状回転体３は、例えば、回転軸部１４と当該回転軸部１４に連接した底部１５、及び、当該底部１５に連接した円筒壁部１６とで構成してある。
【００１９】
前記回転軸部１４は軸受１７を介して回転自在に基台１に取り付けられている。基台１に取り付けられたモータ１８および当該モータ１８に連結された駆動ベルト１９ａによって、前記回転軸部１４のプーリー１９ｂに駆動力が伝達され、前記筒状回転体３が回転駆動される。筒状回転体３を回転駆動することで被処理物４には遠心力が作用し、被処理物４は筒状回転体３の受け面６に押し付けられるのである。
【００２０】
前記底部１５は、前記回転軸部１４と前記円筒壁部１６とを連結する機能、および、前記被処理物保持手段Ｓ１としての機能を有する。即ち、当該底部１５は、後述する円筒壁部１６との関係において互いの面が折れ曲がった関係にあり、筒状回転体３が回転する際に、被処理物４が充分に処理されずに押圧部７から下方に逃げてしまうのを防止する。
【００２１】
前記円筒壁部１６の内周面は、遠心力を受けて外向きに移動しようとする被処理物４の受け面６となる。即ち、被処理物４を前記押圧部７に留めておき、前記受け面６と前記インナーピース５との協働によって被処理物４に押圧力を付与して粉体処理を行う。
【００２２】
この円筒壁部１６には、図１あるいは図２に示すごとく孔部２０を設けてある。この孔部２０は、前記受け面６、つまりは前記円筒壁部１６を貫通しており、円筒壁部１６の回転軸心Ｘを挟んで対称の位置に合計二個所設けてある。前記孔部２０は、前記押圧部７に保持された被処理物４の一部を押圧部７の外部に排除するためのものであり、前記被処理物排除手段Ｓ２として機能する。当該孔部２０は、例えば受け面６の下方側に保持された被処理物４ほど多く排出するように下方側の開口面積の比率が大きくなるように形成してある。本実施形態では、例えば、前記孔部２０を半円形状に形成する。
被処理物４は、遠心力によって前記受け面６に押し付けられつつ、同時に重力の影響を受ける。このため、図１に示す円筒壁部１６の場合、被処理物４は鉛直方向下方へ移動して前記受け面６と前記底部１５との境界近傍に堆積しがちとなる。この部分に堆積する被処理物４は、筒状回転体３の回転負荷を増大させると共に、前記押圧部７への被処理物４の循環を阻害する。よって、当該部分に堆積した被処理物４を積極的に排除することで上記不都合を解消し、粉体処理の効率を向上させるのである。
【００２３】
尚、通常、被処理物４は上記のごとく下方に移動するが、インナーピース５の押圧力が強い場合には、前記押圧部７に存在する被処理物４が前記受け面６の上方に押し上げられることとなる。この場合に、上方への被処理物４の移動を一切制限しないとすると、被処理物４に与える押圧力が一定以上に高まらず、粉体処理の効率が制限される。そこで、本実施形態においては、前記筒状回転体３の上縁にも前記被処理物保持手段Ｓ１としての折曲り部２１を設ける例を示した。
本構成によれば、前記押圧部７に存在する被処理物４の殆どが前記孔部２０を介して押圧部７の外に排除される。よって、被処理物４は一定時間のあいだ押圧部７に保持されて押圧力を付加され粉体処理が確実に行われる。
【００２４】
（インナーピース）
前記筒状回転体３の内部には、前記受け面６に所定の間隔を有して配置するインナーピース５を設けている。当該インナーピース５は、例えば、前記筒状回転体３の回転軸心Ｘと同軸心上となるように設けた縦向き固定軸２２に固設してある。当該インナーピース５は、前記受け面６と協働して被処理物４に押圧力を付与する。そのため、インナーピース５の水平断面形状は、図３に示すごとく例えば半円形状に構成してある。
本構成であれば、当該インナーピース５と前記受け面６との間に侵入しようとする被処理物４を圧密する効果が期待できるため、粉体粒子の複合化や球状化処理には有利である。
このインナーピース５はケーシング２と同様に固定した構成としてもよいし、前記縦向き固定軸２２を何らかの駆動手段を用いて回転駆動し、前記受け面６に対して積極的に相対回転させる構成にしてもよい。即ち、インナーピース５の回転方向あるいは回転速度を適宜設定することで、当該インナーピース５と前記受け面６との相対回転速度をより細かく設定できて、被処理物４に応じた最適な処理条件を設定することが可能となる。
【００２５】
図示は省略するが、前記縦向き固定軸２２が固定してある場合あるいは回転駆動できる場合の如何に拘わらず、前記縦向き固定軸２２を介して前記インナーピース５の温度を制御する構成とすることもできる。
例えば図示は省略するが、縦向き固定軸２２およびインナーピース５の内部に熱媒体通路を確保しておけば、被処理物４の熱特性に応じて最適な処理条件を設定することが容易となる。
【００２６】
（羽根部材）
前記筒状回転体３の外周下方部には羽根部材２３を設けてある。当該羽根は、筒状回転体３の周方向に沿って復数枚設けるが、その枚数は任意である。当該羽根部材２３は、前記孔部２０から筒状回転体３の外方に排除された被処理物４を再び前記押圧部７に循環させるためのものである。この羽根部材２３は、前記被処理物４を前記押圧部７に円滑かつ確実に搬送するために、前記ケーシング２の内面形状に適合させて形成してある。
【００２７】
（粉体処理）
本発明に係る装置を用いた場合、被処理物４が遠心力によって筒状回転体３の受け面６に押し付けられ、集合作用を受けて、受け面６において圧密状態の被処理物４層が生成する。その一方で、当該圧密された被処理物４の一部は、前記孔部２０等で構成した被処理物排除手段Ｓ２を介して筒状回転体３の外側に排除されるし、筒状回転体３の内部に存在する被処理物４は、前記インナーピース５によってある程度の攪拌作用を受ける。即ち、本発明の装置によれば、被処理物４の複合化および混合化を速やかに進行させることができる。
【００２８】
(効果）
以上のごとく、本発明の粉体処理装置によれば、前記押圧部７と筒状回転体３の外部空間とを被処理物４が循環し、押圧部７には被処理物４が順次入れ替わって供給されるから、被処理物４の全体を確実に粉体処理して品質が極めて安定した製品を得ることができ、しかも、従来の装置に比べて被処理物４の処理能力が大幅に向上する。
また、本発明の装置では、筒状回転体の内包空間だけでなく筒状回転体の外部にも被処理物を貯溜することができるため、一回のバッチ処理に際して従来の粉体処理装置よりも多量の被処理物を装置の内部に投入することができ、被処理物の処理効率をさらに向上させることができる。
さらには、本発明の装置によれば、受け面６に対する被処理物４の付着量は被処理物排除手段Ｓ２の働きによって大幅に低減されるから、当該装置の動作不良が発生し難く、清掃等の手間も軽減される。
【００２９】
（実施例）
本発明の装置を用いた粉体処理の一例を以下に示す。
実験試料として、珪砂と酸化チタンとを重量比で１０：１に配合したものを用いた。これらの試料の物性を表１に示す。
【００３０】
【表１】

【００３１】
ここでＢＥＴ比表面積とは、吸着法の一種であるＢＥＴ法によって測定した試料の比表面積をいう。即ち、試料粉体の表面に吸着占有面積が既知である分子を吸着させ、その吸着量から試料の比表面積を求めるものである。
当該実施例の運転条件を表２に示す。
【００３２】
【表２】

【００３３】
尚、本実施例においては、回転筒体の内周径は１５０ｍｍφであり、受け面６とインナーピース５とのクリアランスは５ｍｍとした。受け面６の高さは１００ｍｍであり、インナーピース５の高さは８０ｍｍである。筒状回転体３には被処理物排除手段Ｓ２として、前記受け面６の最下部に略半円形状の孔部２０を設けた。当該孔部２０の高さは１０mmとし、底辺部の幅は４５ｍｍとした。
【００３４】
本実施例の結果を図４に示す。本図は、処理時間とＢＥＴ比表面積との関係を示すものであり、筒状回転体３の回転数は２０００ｒｐｍに固定して試料の投入量を変化させた結果を整理した。
図４により処理時間の経過と共にＢＥＴ比表面積が減少していることがわかる。これは、珪砂の表面に酸化チタンが融合して粉体粒子の複合化が生じていることを示すものである。この結果では、試料の投入量を１．３８ｋｇから５．５４ｋｇまで増加させても粉体どうしの融合の進行程度は安定していることがわかる。即ち、試料の投入量の多少に拘わらず、安定的に複合化処理が進行することがわかる。
図５には、筒状回転体３の回転数が処理速度に与える影響を示した。ここでは、従来の標準型装置に係る処理量の２０倍の試料を投入している。筒状回転体３の回転数が多いほど処理速度も向上することがわかる。例えば、筒状回転体３の回転数が３５００ｒｐｍの場合には、従来の標準型装置の処理量に対して処理時間を約２倍に延長することで従来の約２０倍の試料を処理できることがわかる。
【００３５】
〔別実施形態〕
以下に他の実施の形態を説明する。
〈１〉上記実施形態では、被処理物排除手段Ｓ２を半円形状の孔部２０で構成したが、当該構成に限られるものではなく、図６に示すごとくスリット状の孔部２０ａを構成することとしても良い。例えば、本別実施形態の場合には鉛直方向に沿って受け面６の高さと略同等の長さを有する孔部２０ａを設けておく。
本構成であれば、押圧部７のうち鉛直方向に沿った何れの位置においても、略同じ量の被処理物４を回転中の筒状回転体３の外部に排除することが可能となる。よって、例えば、被処理物４の流動性が比較的乏しく、前記受け面６の略全体に被処理物が付着するような場合でも、被処理物４の入れ替えを確実に行うことができ、当該粉体処理の効率を向上させることができる。
【００３６】
〈２〉上記実施形態では、被処理物排除手段Ｓ２を孔部２０で構成したが、当該構成に限られるものではなく図７に示すごとく、前記折曲り部２１に切欠部２４を形成するものとしても良い。当該切欠部２４は、例えば、図７（イ）に示すごとく筒状回転体３の上下に鍔状に設けた折曲り部２１に対して設けるものとし、上側の折曲り部２１および下側の折曲り部２１の夫々において前記回転軸心Ｘの周方向に分散させて複数箇所に設けるものとする。
本構成であれば、筒状回転体３の回転に際して重力によって下方に移動しようとする被処理物４の動きを利用して被処理物４を循環させることが可能であり、全ての被処理物４を効率的に粉体処理することができる。
尚、図７（ロ）に示すごとく、筒状回転体３の底部１５の周縁部に対し、複数箇所に孔部２４ａを設けることで上記切欠部２４と同様の効果を発揮させることもできる。
【００３７】
〈３〉上記実施形態では、断面形状が略円筒状の外周面を有するインナーピース５を用いたが、この他にも、図８（イ）に示すごとく略矩形状の断面形状を有するものや、図８（ロ）に示すごとく台形状の断面形状を有するもの、さらには、図８（ハ）に示すごとく完全な円筒状の外面を有するものなど各種の形状のものを用いることが可能である。
これらのうち、外面が略円筒状に形成されているものでは、被処理物４を受け面６との間で押圧するので、所謂粉体処理を行うのに好都合である。これに対して、断面が矩形状あるいは台形状のものでは、被処理物４を押圧するというよりも受け面６に付着した被処理物４を剥離させる効果が高まるため、被処理物４を精密混合したりする場合に有利である。
【００３８】
〈４〉前記筒状回転体３の形状としては種々のものが考えられる。
例えば、図９（イ）に示すごとく前記受け面６の上側を縮径させるものであってもよい。この場合には、被処理物４に作用する遠心力の分力によって被処理物４をより積極的に下方に移動させることができるので、例えば、粘性の高い被処理物４あるいは比重の小さい被処理物４等を処理するのに適している。
また、図９（ロ）に示すごとく前記受け面６の下側を縮径させるものとしてもよい。この場合には、被処理物４に作用する遠心力の分力によって被処理物４の落下を抑制することができるので、比重の大きい被処理物４を処理するのに適している。
さらに、図９（ハ）に示すごとく前記受け面６の上下双方の縁部を縮径させた樽形状とするものであってもよい。本構成であれば、筒状回転体３の回転速度が大きくなっても被処理物４を前記押圧部７に確実に保持することができる。
尚、何れの場合においても、インナーピース５の形状は、前記受け面６の形状に適合させ、両者の間隔が平行となるように構成するのが望ましい。
【００３９】
〈５〉上記実施形態では、筒状回転体３の内部にはインナーピース５のみを設ける例を示したが、図１０に示すごとくインナーピース５に加えて掻取部材２５を設けることもできる。
当該掻取部材２５は、前記受け面６に付着した被処理物４層を掻き取るためのものであり、前記受け面６に対して相対回転自在に設ける。例えばこの掻取部材２５は前記縦向き固定軸２２に連結杆２６を介して取り付けるものとする。当該掻取部材２５は前記インナーピース５の回転方向下手に設けておき、インナーピース５で押しつけられた後の被処理物４を掻き取って、受け面６への被処理物４の固着を防止するのである。これにより、前記押圧部７には常に新しい被処理物４が循環供給されて、被処理物４の粉体処理が促進される。この掻取部材２５と受け面６とのクリアランスは通常１ｍｍ程度に設定する。
尚、掻取部材２５はインナーピース５の直後に設けてもよいし、前記筒状回転体３の回転軸心Ｘを中心に３０度〜４５度程度後方に設置してもよく、設置位置は任意である。ただし、掻取部材２５をインナーピース５の直前に設けると、被処理物４が飛散して前記押圧部７に被処理物４がうまく供給されないので好ましくない。
【図面の簡単な説明】
【図１】本発明の粉体処理装置を示す縦断面図
【図２】孔部を示す説明図
【図３】インナーピースの形状を示す説明図
【図４】被処理物の複合化処理結果を示す説明図
【図５】被処理物の複合化処理結果を示す説明図
【図６】被処理物排除手段の一例を示す説明図
【図７】被処理物排除手段の一例を示す説明図
【図８】別実施形態に係るインナーピースを示す説明図
【図９】別実施形態に係る筒状回転体を示す説明図
【図１０】掻取部材を設けた例を示す説明図
【符号の説明】
３筒状回転体
３ａ筒状回転体の内包空間
４被処理物
５インナーピース
６受け面
７押圧部
２０孔部
２１折曲り部
２４切欠部
Ｓ１被処理物保持手段
Ｓ２被処理物排除手段
Ｘ回転軸心[0001]
BACKGROUND OF THE INVENTION
  The present invention is a cylindrical rotating body that is rotatable around a rotation axis along the vertical direction and has a receiving surface against which an object to be processed is pressed, and the cylindrical shape close to the receiving surface. The present invention relates to a powder processing apparatus including an inner piece disposed inside a rotating body.
[0002]
[Prior art]
  Conventionally, as this type of powder processing apparatus, for example, a cylindrical rotating body that forms a processing space for processing an object to be processed is provided, and the object to be processed is rotated by driving the cylindrical rotating body. While pressing against the receiving surface formed on the inner peripheral portion of the cylindrical rotating body, using the inner piece provided inside the cylindrical rotating body, to the powder body by cooperation of the receiving surface and the inner piece There were some which applied pressing force or shear force.
  With the conventional apparatus, various treatments such as fine mixing or shape control of the granular material are performed in addition to rough mixing and complexing of the processed materials, for example, granular materials.
  Among these, in particular, compounding means that a mixture of a plurality of raw materials is applied with a pressing force and a shearing force to fuse and integrate other raw materials on the surface of a specific raw material.
  In addition, the precise mixing refers to mixing different kinds of raw materials in a state of being uniformly dispersed at a single particle level.
  Furthermore, shape control refers to, for example, applying pressure or shearing force to a plurality of raw materials, attaching other raw materials to the surface of a specific raw material that does not have a spherical shape, and shaping the specific raw material into a spherical shape. In addition, it refers to applying a pressure or the like to a raw material that does not have a spherical shape and crushing a part thereof to shape the raw material into a spherical shape. These processes may be collectively referred to as mechanofusion processes.
[0003]
[Problems to be solved by the invention]
  In the conventional apparatus described above, so-called batch processing is performed in which a predetermined amount of powder, which is an object to be processed, is charged into a cylindrical rotating body every time powder is processed. Therefore, there is a certain limitation on the processing capacity of the object to be processed.
  In addition, it is difficult to obtain a product with stable quality, for example, an object to be processed remains on the receiving surface of the cylindrical rotating body and remains unprocessed.
  Furthermore, since batch processing is performed as described above, there are many points to be improved such as complicated operations for loading / unloading workpieces or cleaning of the apparatus, and difficult control of the atmosphere inside the processing space. Was.
[0004]
  It is an object of the present invention to provide a powder processing apparatus that solves the above-described conventional problems and is excellent in processing capability and operability of a workpiece.
[0005]
[Means for Solving the Problems]
[Configuration 1]
  As shown in claim 1, the powder processing apparatus of the present invention isThe casing 2 is provided with the cylindrical rotating body 3 therein, and the casing 2 forms a processing space 9 for processing the workpiece 4;The pressing portion 7 formed between the receiving surface 6 and the inner piece 5 has a workpiece holding means S1 for holding the workpiece 4 and the workpiece 4 held by the pressing portion 7. There is an object removal means S2 for removing a part of the cylindrical rotating body 3 to the outside of the internal space 3a of the cylindrical rotating body 3 when the cylindrical rotating body 3 is driven to rotate.The workpiece removal means S2 is constituted by a hole 20 formed through the receiving surface 6 and is formed in a shape corresponding to the inner surface shape of the casing 2 and is provided at a lower peripheral portion of the cylindrical rotating body 3. And a blade member 23 that circulates the workpiece 4 removed by the workpiece exclusion means S2 to the pressing portion 7.Characterized by points.
[Function and effect]
  As in this configuration, between the receiving surface and the inner pieceFor holding the workpiece in the pressing part to be formedIf the workpiece holding means is provided, the workpiece is reliably held in the pressing portion and a pressing force is applied to the workpiece, so that the processing efficiency of the workpiece can be improved.
  Further, a part of the object to be processed held by the pressing part is excluded outside the internal space of the cylindrical rotating body by the object to be processed exclusion means while the cylindrical rotating body is being driven to rotate. .More specifically, the object to be processed that has been excluded from the cylindrical rotating body by the object to be processed is formed in a shape corresponding to the inner surface shape of the casing and provided at the lower part of the outer periphery of the cylindrical rotating body. The blade member is smoothly and reliably circulated through the pressing portion again.In other words, the workpieces in the pressing portion are sequentially replaced, and the entire workpiece to be processed that has been put into the apparatus is uniformly processed. As a result, the quality of the obtained product becomes extremely stable.
  Furthermore, in the apparatus of the present invention, the internal space of the cylindrical rotating bodyIsIn addition, the object to be processed can be stored outside the cylindrical rotating body. For this reason, a larger amount of the object to be processed than the conventional powder processing apparatus can be put into the apparatus in one batch processing, and the processing efficiency of the object to be processed can be further improved.
  And since a cylindrical rotary body rotates at high speed, a strong centrifugal force acts on the to-be-processed object which exists in a press part. At the same time, an outward pressing force by the inner piece also acts on the object to be processed in the pressing portion. Therefore, if the hole is formed through the receiving surface as in the present configuration, the workpiece is easily moved outward from the cylindrical rotating body, so that the workpiece is removed very smoothly. As a result, the object to be processed existing in the pressing part is replaced quickly and reliably, the processing speed of the object to be processed is improved, and the quality of the product is further stabilized.
[0006]
[Configuration 2]
  In the powder processing apparatus of the present invention, as shown in claim 2, the workpiece holding means S1 is provided on at least one of the upper and lower edges of the cylindrical rotating body 3, and the rotation axis X It can comprise by the bending part 21 bent in the side.
[Function and effect]
  The object to be processed pressed to the receiving surface side by the inner piece moves, for example, to the upper side or the lower side of the receiving surface and tries to escape to the outside of the pressing portion. By restraining such movement of the object to be processed by the bent part, it is possible to increase the time during which the object to be processed stays in the pressing part, and to further improve the efficiency of the powder processing.
[0007]
〔Constitution3]
  The powder processing apparatus of the present invention is claimed3As shown in FIG. 2, the hole 20 can be formed in a substantially semicircular shape and provided at the lowermost portion of the receiving surface 6.
[Function and effect]
  As described above, the centrifugal force and the pressing force by the inner piece act on the workpiece present in the pressing portion, but gravity also acts on the workpiece. Therefore, for example, when the object to be processed is very fluid, it tends to flow particularly downward in the pressing portion. Therefore, if the hole is configured in a substantially semicircular shape as in the present configuration and provided at the lowermost part of the receiving surface, more objects to be processed existing below the pressing portion can be eliminated. In addition, with this configuration, the object to be processed that is in direct contact with the receiving surface is excluded from the cylindrical rotating body earlier, so that the object to be processed that is once fixed to the receiving surface is as in the conventional apparatus. There is no inconvenience of remaining untreated until the end. Therefore, the effect of replacing the object to be processed existing in the pressing portion is further improved, and the processing efficiency of the powder processing is improved.
[0008]
〔Constitution4]
  The powder processing apparatus of the present invention is claimed4As shown in FIG. 5, the hole 20 can be formed in a slit shape, and the length of the hole 20 along the vertical direction can be formed to be substantially the same as the height of the receiving surface 6 in the same direction.
[Function and effect]
  If a slit having a length substantially the same as the height of the receiving surface is provided along the vertical direction as in the present configuration, substantially the same amount of processing object is provided at any position along the vertical direction in the pressing portion. Things can be eliminated. Therefore, for example, even when the processing object is very poor in fluidity and the processing object adheres to substantially the entire receiving surface, the processing object can be reliably replaced, and the powder processing Processing efficiency can be improved.
[0009]
〔Constitution5]
  The powder processing apparatus of the present invention is claimed5As shown in FIG. 3, a plurality of the hole portions 20 can be formed in the circumferential direction around the rotation axis X.
[Function and effect]
  As in this configuration, by arbitrarily setting the number of the hole portions, it is possible to appropriately set the removal amount of the object to be processed existing in the pressing portion. For example, as the number of holes increases, the object to be processed is easily removed, and as a result, the pressing force applied by the inner piece is weakened. In other words, it is preferable to provide a large number of the holes when a workpiece to be processed whose powder processing proceeds promptly, or when a workpiece to be processed that does not want to give an excessive pressing force is processed.
  Thus, with this configuration, powder processing can be performed according to the characteristics of the object to be processed.
[0010]
〔Constitution6]
  As shown in claim 6, the powder processing apparatus of the present invention has a casing 2 that includes the cylindrical rotating body 3 and forms a processing space 9 for processing the workpiece 4. The pressing part 7 formed between the surface 6 and the inner piece 5 has a processing object holding means S1 for holding the processing object 4 and one of the processing objects 4 held by the pressing part 7. A workpiece removal means S2 for removing the portion to the outside of the internal space 3a of the cylindrical rotary body 3 when the cylindrical rotary body 3 is driven to rotate, and the workpiece holding means S1 is provided on at least one of the upper and lower edges of the cylindrical rotating body 3 and is formed by a bent portion 21 bent toward the rotation axis X side, and the workpiece removal means S2 is The casing includes a cutout portion 24 formed in the bent portion 21, and the casing Is formed in a shape corresponding to the shape of the inner surface of the cylindrical rotating body 3 and provided at the lower part of the outer periphery of the cylindrical rotating body 3, and the object to be processed 4 excluded by the object to be processed exclusion means S2 is circulated to the pressing part 7. It is characterized in that it has a blade member 23.
[Function and effect]
  As in this configuration, if the workpiece holding means for holding the workpiece is provided in the pressing portion formed between the receiving surface and the inner piece, the workpiece is securely held in the pressing portion. Since the pressing force is applied to the object to be processed, the processing efficiency of the object to be processed can be improved.
  Further, a part of the object to be processed held by the pressing part is excluded outside the internal space of the cylindrical rotating body by the object to be processed exclusion means while the cylindrical rotating body is being driven to rotate. . More specifically, the object to be processed that has been excluded from the cylindrical rotating body by the object to be processed is formed in a shape corresponding to the inner surface shape of the casing and provided at the lower part of the outer periphery of the cylindrical rotating body. The blade member is smoothly and reliably circulated through the pressing portion again. In other words, the workpieces in the pressing portion are sequentially replaced, and the entire workpiece to be processed that has been put into the apparatus is uniformly processed. As a result, the quality of the obtained product becomes extremely stable.
  Furthermore, in the apparatus of the present invention, the object to be processed can be stored not only in the internal space of the cylindrical rotating body but also outside the cylindrical rotating body. For this reason, a larger amount of the object to be processed than the conventional powder processing apparatus can be put into the apparatus in one batch processing, and the processing efficiency of the object to be processed can be further improved.
  And the to-be-processed object pressed to the receiving surface side by the inner piece moves, for example to the upper side or the lower side of a receiving surface, and tends to escape to the exterior of a press part. By restraining such movement of the object to be processed by the bent part, it is possible to increase the time during which the object to be processed stays in the pressing part, and to further improve the efficiency of the powder processing.
  As described above, the workpiece pressed by the inner piece is restrained by the bent portion so as to move to the upper side or the lower side of the receiving surface, but a notch portion is formed in the bent portion. By allowing a part of the movement of the processing object, the processing object existing in the pressing portion can be sequentially replaced, and the entire processing object can be processed equally.
[0011]
  Note that, as described above, reference numerals are used for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entries.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the parts indicated by the same reference numerals as those in the conventional example indicate the same or corresponding parts.
[0013]
(Overview)
  The powder processing apparatus of the present invention is shown in FIG.
  The apparatus of the present invention mainly includes a substantially cylindrical casing 2 installed on a base 1, a cylindrical rotating body 3 having a substantially cylindrical shape provided inside the casing 2, and the cylindrical rotating body 3. The inner piece 5 is disposed inside the cylindrical rotating body 3 so as to process the workpiece 4 by generating a pressing force therebetween. The object to be treated 4 is usually a powdery raw material, but a slurry raw material or a suspension raw material can also be used.
  By rotating the cylindrical rotating body 3, the receiving surface 6 formed on the inner peripheral surface of the cylindrical rotating body 3 and the inner piece 5 are relatively rotated, and the receiving surface 6 and the inner piece 5 are The powder processing is performed by applying a pressing force to the workpiece 4 existing in the pressing portion 7 therebetween.
[0014]
  In the apparatus of the present invention, a workpiece holding means S1 for improving the processing efficiency of the workpiece 4 is provided, and the workpiece 4 is held in the pressing portion 7 as much as possible by the workpiece holding means S1. It is the composition to do. On the other hand, there is a workpiece removal means S2 for actively circulating the workpiece 4 with respect to the pressing portion 7. The object to be processed removing means S2 is configured such that a part of the object to be processed 4 held by the pressing portion 7 is outside the internal space 3a of the cylindrical rotating body while the cylindrical rotating body 3 is being driven to rotate. As a result, all the workpieces 4 are sequentially circulated and supplied to the pressing portion 7.
[0015]
(casing)
  The casing 2 constituting this apparatus is supported by a support member 8 placed and fixed on the base 1. A processing space 9 for processing the workpiece 4 is formed inside the casing 2. The casing 2 includes a casing body 2a and a lid member 2b. The lid member 2b is detachable from the casing body 2a, and has a workpiece input port 10 and an exhaust port 11 with a filter. A workpiece outlet 12 for taking out the workpiece 4 that has been processed is formed on a part of the bottom periphery of the casing body 2a. With these configurations, continuous processing of the workpiece 4 is possible.
  In addition, the bottom 2c of the casing 2 is inclined in a substantially conical shape so that the outer peripheral portion is positioned downward. This is because the workpiece 4 transferred to the bottom portion 2c of the casing 2 enters a gap between a rotation shaft portion 14 of the cylindrical rotating body 3 and the bottom portion 2c, which will be described later, and the rotation of the cylindrical rotating body 3 is hindered. This is to prevent it.
[0016]
  The inside of the casing 2, that is, the atmosphere of the processing space 9 can be appropriately changed according to the type of the object to be processed 4. For example, various gases such as an inert gas and a heated gas can be introduced into the casing 2 from the workpiece inlet 10, and the inside of the casing 2 can be pressurized and decompressed using a pressurization / vacuum pump or the like. It is also possible to do. Therefore, in the powder processing apparatus according to the present invention, for example, a seal is provided between the casing 2 and the rotating shaft portion 14 of the cylindrical rotating body 3 or between the casing 2 and the vertically fixed shaft 22 of the inner piece 5.

Members

27a and 27b are provided.
[0017]
  A jacket 13 for mainly adjusting the temperature of the processing space 9 is provided around the casing 2. A heating medium or a cooling medium from a separately provided tank (not shown) is circulated and supplied to the jacket 13 as necessary. Of course, when it is not necessary to positively adjust the internal temperature of the casing 2, the heating medium or the like is not supplied.
[0018]
(Cylindrical rotating body)
  As shown in FIG. 1, the casing 2 includes a cylindrical rotating body 3 that has a substantially cylindrical shape and is rotatable around a rotation axis X in the vertical direction. The cylindrical rotating body 3 includes, for example, a rotating shaft portion 14, a bottom portion 15 connected to the rotating shaft portion 14, and a cylindrical wall portion 16 connected to the bottom portion 15.
[0019]
  The rotating shaft portion 14 is rotatably attached to the base 1 via a bearing 17. A driving force is transmitted to the pulley 19b of the rotating shaft portion 14 by the motor 18 attached to the base 1 and the driving belt 19a connected to the motor 18, and the cylindrical rotating body 3 is rotationally driven. By rotating the cylindrical rotating body 3, centrifugal force acts on the object to be processed 4, and the object to be processed 4 is pressed against the receiving surface 6 of the cylindrical rotating body 3.
[0020]
  The bottom portion 15 has a function of connecting the rotating shaft portion 14 and the cylindrical wall portion 16 and a function as the workpiece holding means S1. That is, the bottom portion 15 has a relationship in which the surfaces of the bottom portion 15 are bent in relation to a cylindrical wall portion 16 described later, and the workpiece 4 is pressed without being sufficiently processed when the cylindrical rotating body 3 rotates. It prevents that it escapes from the part 7 below.
[0021]
  The inner peripheral surface of the cylindrical wall portion 16 serves as a receiving surface 6 for the workpiece 4 that is subjected to centrifugal force to move outward. In other words, the object to be processed 4 is retained on the pressing portion 7, and the powder processing is performed by applying a pressing force to the object to be processed 4 by cooperation of the receiving surface 6 and the inner piece 5.
[0022]
  The cylindrical wall portion 16 is provided with a hole 20 as shown in FIG. The hole portion 20 penetrates the receiving surface 6, that is, the cylindrical wall portion 16, and a total of two positions are provided at symmetrical positions with the rotation axis X of the cylindrical wall portion 16 in between. The hole portion 20 is for excluding a part of the workpiece 4 held by the pressing portion 7 to the outside of the pressing portion 7, and functions as the workpiece exclusion means S2. The hole 20 is formed so that the ratio of the opening area on the lower side is increased so that, for example, the workpiece 4 held on the lower side of the receiving surface 6 is discharged more. In the present embodiment, for example, the hole 20 is formed in a semicircular shape.
  The workpiece 4 is pressed against the receiving surface 6 by centrifugal force and is simultaneously affected by gravity. For this reason, in the case of the cylindrical wall portion 16 shown in FIG. 1, the workpiece 4 tends to move downward in the vertical direction and accumulate near the boundary between the receiving surface 6 and the bottom portion 15. The workpiece 4 accumulated in this portion increases the rotational load of the cylindrical rotating body 3 and inhibits the circulation of the workpiece 4 to the pressing portion 7. Therefore, the inconvenience is eliminated by positively removing the workpiece 4 deposited on the portion, and the efficiency of the powder processing is improved.
[0023]
  Normally, the workpiece 4 moves downward as described above, but when the inner piece 5 has a strong pressing force, the workpiece 4 present in the pressing portion 7 is pushed up above the receiving surface 6. Will be. In this case, if the movement of the workpiece 4 upward is not restricted at all, the pressing force applied to the workpiece 4 does not increase beyond a certain level, and the efficiency of the powder treatment is limited. Therefore, in the present embodiment, an example in which the bent portion 21 as the workpiece holding means S1 is provided on the upper edge of the cylindrical rotating body 3 has been shown.
  According to this configuration, most of the object to be processed 4 existing in the pressing portion 7 is excluded from the pressing portion 7 through the hole portion 20. Therefore, the workpiece 4 is held by the pressing portion 7 for a certain period of time, and a pressing force is applied, so that the powder processing is performed reliably.
[0024]
(Inner piece)
  An inner piece 5 that is disposed on the receiving surface 6 with a predetermined interval is provided inside the cylindrical rotating body 3. The inner piece 5 is fixed to, for example, a vertically fixed shaft 22 provided so as to be coaxial with the rotational axis X of the cylindrical rotating body 3. The inner piece 5 applies a pressing force to the workpiece 4 in cooperation with the receiving surface 6. Therefore, the horizontal cross-sectional shape of the inner piece 5 is, for example, a semicircular shape as shown in FIG.
  With this configuration, an effect of compacting the workpiece 4 that is about to enter between the inner piece 5 and the receiving surface 6 can be expected, which is advantageous for compounding or spheroidizing powder particles. is there.
  The inner piece 5 may be fixed in the same manner as the casing 2, or may be configured such that the longitudinally fixed shaft 22 is rotationally driven using some driving means and is positively rotated relative to the receiving surface 6. May be. That is, by appropriately setting the rotation direction or rotation speed of the inner piece 5, the relative rotation speed between the inner piece 5 and the receiving surface 6 can be set more finely, and the optimum processing conditions according to the workpiece 4 can be set. Can be set.
[0025]
  Although not shown, the temperature of the inner piece 5 is controlled via the vertical fixed shaft 22 regardless of whether the vertical fixed shaft 22 is fixed or rotationally driven. You can also
  For example, although illustration is omitted, if a heat medium passage is secured inside the vertically fixed shaft 22 and the inner piece 5, it is easy to set optimum processing conditions according to the thermal characteristics of the workpiece 4. Become.
[0026]
(Blade member)
  SaidCylindrical rotating body 3A blade member 23 is provided in the lower part of the outer periphery. The blades are provided in a repetitive number along the circumferential direction of the cylindrical rotating body 3, but the number of the blades is arbitrary. The blade member 23 is used to circulate the workpiece 4 removed from the hole 20 to the outside of the cylindrical rotating body 3 to the pressing portion 7 again. The blade member 23 is formed in conformity with the inner surface shape of the casing 2 in order to smoothly and reliably convey the workpiece 4 to the pressing portion 7.
[0027]
(Powder processing)
  When the apparatus according to the present invention is used, the workpiece 4 is pressed against the receiving surface 6 of the cylindrical rotating body 3 by centrifugal force, and receives the collective action. Generate. On the other hand, a part of the compacted workpiece 4 is removed to the outside of the cylindrical rotating body 3 via the workpiece exclusion means S2 constituted by the hole 20 or the like, and the cylindrical rotation is performed. The workpiece 4 present inside the body 3 is subjected to a certain amount of stirring action by the inner piece 5. That is, according to the apparatus of the present invention, the compounding and mixing of the workpiece 4 can be rapidly advanced.
[0028]
(effect)
  As described above, according to the powder processing apparatus of the present invention, the workpiece 4 circulates between the pressing portion 7 and the external space of the cylindrical rotating body 3, and the workpiece 4 is sequentially replaced in the pressing portion 7. Therefore, it is possible to obtain a product having an extremely stable quality by processing the whole of the workpiece 4 with certainty, and the processing capability of the workpiece 4 is significantly higher than that of the conventional apparatus. improves.
  Further, in the apparatus of the present invention, since the object to be processed can be stored not only in the internal space of the cylindrical rotating body but also outside the cylindrical rotating body, the conventional powder processing apparatus can be used for one batch processing. In addition, a large amount of object to be processed can be introduced into the apparatus, and the processing efficiency of the object to be processed can be further improved.
  Furthermore, according to the apparatus of the present invention, the amount of the object to be processed 4 attached to the receiving surface 6 is greatly reduced by the function of the object to be processed excluding means S2. Etc. are alleviated.
[0029]
(Example)
  An example of powder processing using the apparatus of the present invention is shown below.
  As an experimental sample, a mixture of silica sand and titanium oxide in a weight ratio of 10: 1 was used. Table 1 shows the physical properties of these samples.
[0030]
[Table 1]

[0031]
Here, the BET specific surface area refers to the specific surface area of the sample measured by the BET method which is a kind of adsorption method. That is, molecules having a known adsorption occupation area are adsorbed on the surface of the sample powder, and the specific surface area of the sample is obtained from the adsorption amount.
Table 2 shows the operating conditions of this example.
[0032]
[Table 2]

[0033]
  In this embodiment, the inner diameter of the rotating cylinder is 150 mmφ, and the clearance between the receiving surface 6 and the inner piece 5 is 5 mm. The height of the receiving surface 6 is 100 mm, and the height of the inner piece 5 is 80 mm. The cylindrical rotating body 3 is provided with a substantially semicircular hole 20 at the lowermost portion of the receiving surface 6 as the object to be processed exclusion means S2. The height of the hole 20 was 10 mm, and the width of the bottom side was 45 mm.
[0034]
  The results of this example are shown in FIG. This figure shows the relationship between the processing time and the BET specific surface area, and the results of changing the input amount of the sample with the rotational speed of the cylindrical rotating body 3 fixed at 2000 rpm were arranged.
  FIG. 4 shows that the BET specific surface area decreases with the lapse of processing time. This indicates that titanium oxide is fused with the surface of the silica sand to form composite powder particles. From this result, it is understood that the degree of progress of the fusion of the powders is stable even when the amount of the sample added is increased from 1.38 kg to 5.54 kg. That is, it can be seen that the composite processing proceeds stably regardless of the amount of sample input.
  FIG. 5 shows the influence of the rotational speed of the cylindrical rotating body 3 on the processing speed. Here, a sample 20 times as much as the processing amount of the conventional standard apparatus is introduced. It can be seen that the processing speed increases as the number of rotations of the cylindrical rotating body 3 increases. For example, when the rotational speed of the cylindrical rotating body 3 is 3500 rpm, the sample can be processed about 20 times the conventional sample by extending the processing time to about twice the processing amount of the conventional standard type apparatus. Recognize.
[0035]
[Another embodiment]
  Other embodiments will be described below.
<1> In the above embodiment, the workpiece removal means S2 is configured by the semicircular hole 20, but is not limited to this configuration, and forms a slit-shaped hole 20a as shown in FIG. It's also good. For example, in the case of this embodiment, the hole 20a having a length substantially equal to the height of the receiving surface 6 is provided along the vertical direction.
  If it is this structure, it will become possible to exclude the to-be-processed object 4 of the substantially same quantity outside the rotating cylindrical rotary body 3 in any position along the vertical direction among the press parts 7. FIG. Therefore, for example, even in the case where the fluidity of the object to be treated 4 is relatively poor and the object to be treated adheres to substantially the entire receiving surface 6, the object to be treated 4 can be reliably replaced, The efficiency of powder processing can be improved.
[0036]
<2> In the above-described embodiment, the workpiece removal means S2 is configured by the hole 20, but is not limited to this configuration, and as shown in FIG. 7, the notch 24 is formed in the bent portion 21. It is also good. The notch 24 is provided, for example, with respect to the bent portion 21 provided in a bowl shape above and below the cylindrical rotating body 3 as shown in FIG. 7 (a), and the upper bent portion 21 and the lower bent portion 21 are provided. In each of the bent portions 21, it is distributed in the circumferential direction of the rotation axis X and provided at a plurality of locations.
  If it is this structure, it is possible to circulate the to-be-processed object 4 using the motion of the to-be-processed object 4 which is going to move below by gravity at the time of rotation of the cylindrical rotary body 3, and all the to-be-processed objects 4 can be efficiently powder-treated.
  As shown in FIG. 7B, the same effect as the notch 24 can be exhibited by providing holes 24a at a plurality of locations on the peripheral edge of the bottom 15 of the cylindrical rotating body 3.
[0037]
<3> In the above embodiment, the inner piece 5 having a substantially cylindrical outer peripheral surface is used. However, in addition to the inner piece 5 as shown in FIG. As shown in FIG. 8 (b), various shapes such as those having a trapezoidal cross section and those having a complete cylindrical outer surface as shown in FIG. 8 (c) can be used. is there.
  Of these, the outer surface formed in a substantially cylindrical shape is convenient for so-called powder processing because the workpiece 4 is pressed against the receiving surface 6. On the other hand, when the cross section is rectangular or trapezoidal, since the effect of peeling off the workpiece 4 attached to the receiving surface 6 is increased rather than pressing the workpiece 4, the workpiece 4 is precisely It is advantageous when mixing.
[0038]
<4> Various shapes of the cylindrical rotating body 3 are conceivable.
  For example, the diameter of the upper side of the receiving surface 6 may be reduced as shown in FIG. In this case, the workpiece 4 can be moved more actively downward by the centrifugal force acting on the workpiece 4. For example, the workpiece 4 having a high viscosity or a workpiece having a low specific gravity can be used. It is suitable for processing the processed material 4 and the like.
  Further, as shown in FIG. 9B, the lower side of the receiving surface 6 may be reduced in diameter. In this case, since the fall of the workpiece 4 can be suppressed by the component force of the centrifugal force acting on the workpiece 4, it is suitable for processing the workpiece 4 having a large specific gravity.
  Furthermore, as shown in FIG. 9 (c), the upper and lower edges of the receiving surface 6 may be barrel-shaped. If it is this structure, even if the rotational speed of the cylindrical rotary body 3 becomes large, the to-be-processed object 4 can be reliably hold | maintained at the said press part 7. FIG.
  In any case, it is desirable that the shape of the inner piece 5 is adapted to the shape of the receiving surface 6 so that the distance between them is parallel.
[0039]
<5> In the above embodiment, an example in which only the inner piece 5 is provided inside the cylindrical rotating body 3 has been described. However, a scraping member 25 may be provided in addition to the inner piece 5 as shown in FIG.
  The scraping member 25 is for scraping off the four layers to be processed attached to the receiving surface 6, and is provided so as to be rotatable relative to the receiving surface 6. For example, the scraping member 25 is attached to the vertical fixed shaft 22 via a connecting rod 26. The scraping member 25 is provided on the lower side in the rotational direction of the inner piece 5, and scrapes off the workpiece 4 after being pressed by the inner piece 5 to prevent the workpiece 4 from sticking to the receiving surface 6. To do. Thereby, a new workpiece 4 is always circulated and supplied to the pressing portion 7, and powder processing of the workpiece 4 is promoted. The clearance between the scraping member 25 and the receiving surface 6 is normally set to about 1 mm.
  The scraping member 25 may be provided immediately after the inner piece 5 or may be installed behind 30 to 45 degrees around the rotation axis X of the cylindrical rotating body 3. Is optional. However, it is not preferable to provide the scraping member 25 immediately before the inner piece 5 because the object to be processed 4 is scattered and the object to be processed 4 is not supplied well to the pressing portion 7.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a powder processing apparatus of the present invention.
FIG. 2 is an explanatory view showing a hole.
FIG. 3 is an explanatory diagram showing the shape of the inner piece
FIG. 4 is an explanatory diagram showing the result of the composite processing of the workpiece
FIG. 5 is an explanatory diagram showing the result of the composite processing of the workpiece
FIG. 6 is an explanatory diagram showing an example of a workpiece removal means.
FIG. 7 is an explanatory view showing an example of a workpiece removal means.
FIG. 8 is an explanatory view showing an inner piece according to another embodiment.
FIG. 9 is an explanatory view showing a cylindrical rotating body according to another embodiment.
FIG. 10 is an explanatory view showing an example in which a scraping member is provided.
[Explanation of symbols]
  3 Cylindrical rotating body
  3a Internal space of cylindrical rotating body
  4 Workpiece
  5 Inner piece
  6 Reception surface
  7 Pressing part
  20 holes
  21 Folding part
  24 Notch
  S1 Object holding means
  S2 Object removal means
  X rotation axis

Claims

A cylindrical rotating body that is rotatable around a rotation axis along the vertical direction and has a receiving surface against which an object to be processed is pressed, and an inside of the cylindrical rotating body so as to be close to the receiving surface A powder processing apparatus provided with an inner piece arranged in
The casing is provided with the cylindrical rotating body, and has a casing that forms a processing space for processing the workpiece.
While having a processed object holding means for holding the processed object in a pressing part formed between the receiving surface and the inner piece, a part of the processed object held in the pressing part, When the cylindrical rotating body is driven to rotate, it has an object removal means for eliminating the outside of the internal space of the cylindrical rotating body ,
The workpiece removal means is configured by a hole formed through the receiving surface,
A blade member that is formed in a shape corresponding to the inner surface shape of the casing and that is provided in the lower part of the outer periphery of the cylindrical rotating body and circulates the object to be processed, which has been excluded by the object to be processed exclusion means, to the pressing part. A powder processing apparatus.

The said to-be-processed object holding means is provided in at least any one of the upper and lower edges of the said cylindrical rotary body, and is comprised by the bending part bent in the side of the said rotating shaft center. Powder processing equipment.

3. The powder processing apparatus according to claim 1, wherein the hole is configured in a substantially semicircular shape and provided at a lowermost portion of the receiving surface.

The powder according to claim 1 or 2 , wherein the hole is formed in a slit shape, and the length of the hole along the vertical direction is formed to be substantially the same as the height of the receiving surface in the same direction. Processing equipment.

The powder processing apparatus according to any one of claims 1 to 4 , wherein a plurality of the hole portions are formed in a circumferential direction around the rotation axis.

A cylindrical rotating body that is rotatable around a rotation axis along the vertical direction and has a receiving surface against which an object to be processed is pressed, and an inside of the cylindrical rotating body so as to be close to the receiving surface A powder processing apparatus provided with an inner piece arranged in
The casing is provided with the cylindrical rotating body, and has a casing that forms a processing space for processing the workpiece.
While having a processed object holding means for holding the processed object in a pressing part formed between the receiving surface and the inner piece, a part of the processed object held in the pressing part, When the cylindrical rotating body is driven to rotate, it has an object removal means for eliminating the outside of the internal space of the cylindrical rotating body ,
The workpiece holding means is provided on at least one of the upper and lower edges of the cylindrical rotating body, and is configured by a bent portion that is bent toward the rotation axis,
The workpiece removal means is constituted by a notch formed in the bent portion,
A blade member that is formed in a shape corresponding to the inner surface shape of the casing and that is provided in the lower part of the outer periphery of the cylindrical rotating body and circulates the object to be processed, which has been excluded by the object to be processed exclusion means, to the pressing part. A powder processing apparatus.