JP3813122B2

JP3813122B2 - Powder and particle mixing method and apparatus

Info

Publication number: JP3813122B2
Application number: JP2002365552A
Authority: JP
Inventors: 尚夫石川
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2002-12-17
Filing date: 2002-12-17
Publication date: 2006-08-23
Anticipated expiration: 2022-12-17
Also published as: JP2004195336A

Description

【０００１】
【発明の属する技術分野】
本発明は粉粒体混合方法とその装置に関し、特に粒径、比重、又は形状の異なる２種以上の粉粒体を、各粉粒体の分級が生じないように混合する混合方法及び混合装置に関する。
【０００２】
【従来の技術】
家庭用品や食料品、或いは工業用原料等として、多種、多様の粉粒体が市場に供給されており、これらの粉粒体は、袋や容器に収容されて製品化され、流通や販売に供されるのが一般的である。また粉粒体は、粒径、比重、形状等が異なる２種以上のものを混合した状態で製品化されることが多く、このような２種以上の粉粒体を混合する場合には、当該２種以上の粉粒体を分級させることなく均一に混合した後に、袋や容器に収容する必要がある。
【０００３】
粒径、比重、形状等の異なる２種以上の粉粒体を均一に混合するための装置としては、機械的な作用によって攪拌混合を行うもの（例えば、特許文献１参照）や、噴射された圧縮エアーによって攪拌混合を行うもの（例えば、特許文献２参照）等、各種の混合装置が知られている。
【０００４】
【特許文献１】
特開平９−２９０８３号公報
【特許文献２】
特開平７−３２３６３号公報
【０００５】
【発明が解決使用とする課題】
２種以上の粉粒体を均一に混合するための上記従来の混合装置によれば、いずれも多量の粉粒体を一度に混合して混合物を形成した後に、得られた混合物をスクリューコンベア等を介して搬送し、搬送された混合物を、袋詰めする工程や、打錠成形、射出成形等を行う工程などの、製品化するための次工程に引き渡すものであるため、多量の混合物を効率良く混合形成できるように大掛りな装置を要することになる。また、２種以上の多量の粉粒体を精度良く均一に混合するためには相当の時間を要することになる。さらに、混合形成された混合物は、製品化するための次工程に搬送されるまでの間に、スクリューコンベア等の搬送装置の内部で振動や攪拌等の作用を受けることによりその均一性が損なわれると共に、各粉粒体が分級することになって、混合割合にばらつきが生じることになりやすい。
【０００６】
本発明は、２種以上の粉粒体を簡易な構成で分級が生じないように迅速に混合することのできる粉粒体混合方法及び粉粒体混合装置を提供することを目的とする。
【０００７】
また、本発明は、混合形成された混合物の各粉粒体が搬送時に分級するのを回避しつつ混合物の袋詰め等を行って、２種以上の粉粒体からなる混合物をばらつきなく容易に製品化することを可能にする粉粒体混合方法及び粉粒体混合装置を提供することを目的とする。
【０００８】
【発明を解決するための手段】
本発明は、粒径、比重、又は形状の異なる２種以上の粉粒体を混合する混合方法であって、１種以上の粉粒体（Ａ）を落下させると共に、残りの１種以上の粉粒体（Ｂ）を落下させ、落下する前記残りの１種以上の粉粒体（Ｂ）を、送り出し装置を介して横方向に送り出すように方向転換させて、落下する前記１種以上の粉粒体（Ａ）の流れに送り込んで合流させ、合流した前記２種以上の粉粒体（（Ａ）＋（Ｂ））を落下させつつ混合する粉粒体混合方法を提供することにより、上記目的を達成したものである。
【０００９】
また、本発明は、上記粉粒体混合方法に用いる粉粒体混合装置であって、天面部に第１粉粒体投入口及び第２粉粒体投入口を有すると共に、下端部に排出シュートが設けられた堆積部を有する中空の外郭体と、該外郭体の内部において前記第２粉粒体投入口の下方に設けられ、前記第２粉粒体投入口から投入されて落下する粉粒体を横方向に送り出すように方向転換させる送り出し装置とからなり、前記第１粉粒体投入口から投入されて前記堆積部に向けて落下する前記１種以上の粉粒体（Ａ）の流れに、前記第２粉粒体投入口から投入されて落下する前記残りの１種以上の粉粒体（Ｂ）を、前記送り出し装置を介して横方向に送り出すように方向転換させて、落下する前記１種以上の粉粒体（Ａ）の流れに送り込んで合流させることにより、合流した前記２種以上の粉粒体（（Ａ）＋（Ｂ））を落下させつつ混合して前記堆積部に堆積させる粉粒体混合装置を提供することにより、上記目的を達成したものである。
【００１０】
【発明の実施の形態】
図１に示す本発明の好ましい実施形態に係る粉粒体混合装置１０は、粒径、比重、又は形状の異なる２種以上の粉粒体（（Ａ）＋（Ｂ））を混合して得られる製品として、例えば入浴剤を製造する装置に組み込まれて用いられ、当該２種以上の粉粒体（（Ａ）＋（Ｂ））を各粉粒体（Ａ），（Ｂ）の分級が生じないように略均一に混合し、得られた混合物２６を当該粉粒体混合装置１０の下方に配置された４方シール充填包装装置１１に送り出して、この４方シール充填包装装置１１によって２種以上の粉粒体（（Ａ）＋（Ｂ））からなる混合物２６を袋詰めすることにより、入浴剤を製造可能にしたものである。
【００１１】
ここで、本実施形態によれば、この入浴剤は、酸化カルシウム、フマル酸、炭酸ナトリウム、及び吸水ポリマーを含む例えば表１に示すような配合を有している。この入浴剤は、これらの組成物を通水袋に入れて身体の例えば肩こりや腰痛を感じる部分に粘着して使用する。そして、浴槽に浸かると配合中の酸化カルシウムが水和反応により発熱して、温熱効果を得るものである。
【００１２】
【表１】

【００１３】
また、本実施形態によれば、この入浴剤に配合される酸化カルシウムは、平均粒径が1000〜1400μｍ、比重が0.9〜1.0の粉粒体であり、フマル酸は、平均粒径が180〜250μｍ、比重が0.8〜1.1の粉粒体である。また、炭酸ナトリウムは、平均粒径が90〜125μｍ、比重が0.5〜0.8の粉粒体であり、吸水ポリマーは、平均粒径が250〜355μｍ、比重が0.63〜0.71の粉粒体である。
【００１４】
粒径、比重、又は形状の異なるこれらの４種の粉粒体（（Ａ）＋（Ｂ））のうちの、平均粒径及び形状が略同様のフマル酸、炭酸ナトリウム、吸水ポリマーの３種の粉粒体（Ａ）は、公知の各種の混合装置を用いて、配合割合に即して各粉粒体を分級させることなく略均一に分散した状態に混合することが容易であると共に、得られた混合物は、搬送時に各粉粒体が分級し難い混合物となる。一方、残りの１種の粉粒体（Ｂ）である酸化カルシウムは、その平均粒径及び形状がこれらの３種の粉粒体（Ａ）とは顕著に相違しており、特にその平均粒径がフマル酸、炭酸ナトリウム又は吸水ポリマーの平均粒径の４〜１２倍であることから、配合割合に即したこれらの３種の粉粒体（Ａ）との略均一な分散混合が困難と考えられ、また略均一に混合されたとしても、各種の搬送装置を介した搬送中に分級が生じやすいものと考えられる。
【００１５】
本実施形態によれば、平均粒径及び形状が略同様のフマル酸、炭酸ナトリウム、吸水ポリマーの３種の粉粒体（Ａ）と、平均粒径及び形状がこれらの３種の粉粒体（Ａ）とは顕著に相違する酸化カルシウムとを、配合割合に即して略均一に分散させた状態で効率良く且つ迅速に混合することを可能にすると共に、搬送中の分級を回避してバラツキのない製品を得ることを目的として、本発明の粉粒体混合装置１０及び粉粒体混合方法を採用するに至ったものである。
【００１６】
そして、本実施形態の粉粒体混合装置１０は、粒径、比重、又は形状の異なる２種以上の粉粒体（（Ａ）＋（Ｂ））を、各粉粒体（Ａ），（Ｂ）の分級が生じないように混合する混合方法に用いる混合装置であって、図１及び図２に示すように、天面部１４に第１粉粒体投入口１２及び第２粉粒体投入口１３を有すると共に、下端部１７に排出シュート１５が設けられた堆積部１６を有する中空の外郭体１８と、この外郭体１８の内部において第２粉粒体投入口１３の下方に設けられ、第２粉粒体投入口１３から投入されて落下する粉粒体Ｂを横方向に送り出すように方向転換させる送り出し装置１９とからなり、第１粉粒体投入口１２から投入されて堆積部１６に向けて落下する１種以上の粉粒体（Ａ）の流れに、第２粉粒体投入口１３から投入された残りの１種以上の粉粒体（Ｂ）を送り出し装置１９を介して横方向に送り出して合流させることにより、２種以上の粉粒体（（Ａ）＋（Ｂ））を流下させつつ混合して堆積部１６に堆積させるものである。
【００１７】
本実施形態の粉粒体混合装置１０を構成する外郭体１８は、平断面が縦横150〜200ｍｍ程度の大きさの矩形形状となった中空箱体２４の下半部分に縦断面が略三角形状の中空傾斜部２５を連接一体化してなるものである。そして、外郭体１８の下端部１７に位置する中空傾斜部２５の下半部分が２種以上の粉粒体（（Ａ）＋（Ｂ））の混合物２６を堆積させる堆積部１６となっていると共に、中空傾斜部２５の下端部は、堆積部１６に堆積された混合物２６を後述する４方シール充填包装装置１１の可動シュート２７に向けて排出する排出口を備えた排出シュート１５となっている。
【００１８】
また、外郭体１８には、その上端開口を覆って開閉可能な天面部１４が設けられていると共に、当該天面部１４に形成された開閉可能な第１粉粒体投入口１２と第２粉粒体投入口１３の上方には、各々第１計量マス２８と第２計量マス２９が設けられている。各計量マス２８，２９には、各々、第１粉粒体供給シュート３０と第２粉粒体供給シュート３１の各供給口が開口接続しており、粉粒体混合搬送装置３２を介して搬送される、平均粒径及び形状が僅かに異なるフマル酸、炭酸ナトリウム、吸水ポリマーの３種の粉粒体の混合物である第１粉粒体（Ａ）を、第１計量マス２８によって所定の配合量となるように計量する。また粉粒体搬送装置３３から搬送される、平均粒径及び形状が異なる残りの１種の粉粒体である酸化カルシウムの粉粒体を、第２粉粒体（Ｂ）として第２計量マス２９によって所定の配合量となるように計量する。
【００１９】
本実施形態によれば、粉粒体混合装置１０を構成する送り出し装置１９は、水平方向の回転軸２２を中心に回転する例えば回転羽根や回転ドラム等の回転体２３によって構成されている。すなわち、送り出し装置１９は、外郭体１８の内部において第２粉粒体投入口１３の下方に配置されて設けられ、例えば200〜1000ｒｐｍ程度の回転数でＲ方向に高速回転させることにより、第２粉粒体投入口１３から投入されて落下する第２粉粒体（Ｂ）を横方向に送り出すように方向転換させ、第１粉粒体投入口１２から投入されて堆積部１６に向けて例えば100〜200cm／秒程度の流下速度で略垂直下方に落下する、第１粉粒体（Ａ）の流れに合流させることができるようになっている。
【００２０】
そして、本実施形態の粉粒体混合装置１０によれば、各計量マス２８，２９によって所定の配合量に各々計量された第１粉粒体（Ａ）と第２粉粒体（Ｂ）とを、第１粉粒体投入口１２及び第２粉粒体投入口１３の開口量を制御してこれらの落下量をコントロールしつつ外郭体１８の内部に落下させると共に、送り出し装置１９としての回転体２３を高速回転させるだけの簡易な構成によって、予め設定された所定の配合割合に応じて、第１粉粒体（Ａ）と第２粉粒体（Ｂ）とを分級させることなく略均一に混合して行くことが可能になる。
【００２１】
すなわち、本実施形態によれば、第１粉粒体（Ａ）は、その自重によって第１粉粒体投入口１２から堆積部１６に向けて帯状の流れとして略垂直下方（略鉛直方向）に落下して行く際に、粉粒体の粒子間の接触が緩くなってこれらの間に相当の隙間が生じると共に、回転体２３を介して横方向から送り出された平均粒径の大きな第２粉粒体（Ｂ）は、当該回転体２３によって落下方向が連続的に変更されるので、緩くなった第１粉粒体（Ａ）の隙間の間に容易に入り込むようにして、第２粉粒体（Ｂ）の流れは停滞せずにスムーズに第１粉粒体（Ａ）の流れに合流混合されることになる。これによって堆積部１６には、第１粉粒体（Ａ）に平均粒径の大きな第２粉粒体（Ｂ）が分級することなく略均一に分散混入した混合物２６が、迅速に形成されて堆積してゆくことになる。
【００２２】
また、本実施形態によれば、粉粒体混合装置１０は、上述のように簡易且つコンパクトな構成を備えていると共に、特に混合物２６を少量づつ形成する用途にも適しており、例えば上述の入浴剤を製造する装置に組み込んで、図１に示すように、形成した混合物２６を袋詰めして製品化するための４方シール充填包装装置１１の直上に配置して用いることにより、長距離の搬送工程を不要とし、且つ混合形成された混合物２６を直ちに袋詰めして、各粉粒体（Ａ），（Ｂ）が略均一に分散混合された状態を容易に保持することが可能になる。
【００２３】
ここで、４方シール充填包装装置１１は、例えば特開２０００−５３１０４号公報に記載の４方シール充填包装装置に種々の改良を加えたものであり、一回転あたり複数個の窪みが外周面に列設され、接触状態で連続回転する一対のシールロール３４へ、くい込み状に挿入される一対のフィルム状の包装材料３５を連続供給して熱融着しながら、シールロール３４の接触部の接線方向に上下に直線的に出入りする可動シュート２７を介して混合物２６を供給してゆくことにより、供給された第１粉粒体（Ａ）と第２粉粒体（Ｂ）との混合物２６を４方シールしつつ包装材料３５に袋詰めして製品化するものである。
【００２４】
また、本実施形態によれば、４方シール充填包装装置１１には、４方シールにより包装材料３５で混合物２６を袋詰めした各包装体３６のヘッドスペースを小さくするために、シールロール３４とシールパターンの異なる一対の二次シールロール３７がシールロール３４の下方に配置されている。一般的に４方シール充填包装では袋の充填率は５０％前後であるので、袋の上部に広い空間が生じ、充填された粉粒体が自由に動き回れる為、せっかく均一に分散させた粉粒体が輸送時の振動等で簡単に分級してしまい、本発明の効果が無くなってしまう。そこで、二次シールロール３７を追加する事によって袋の上部空間を潰して袋内で粉粒体を固定すれば、簡単に分級する事はなくなる。さらに、本実施形態によれば、縦横に連続して形成される包装体３６を個々の包装体３６として切断分割するためのトリミング装置３８が、二次シールロール３７の下方に設けられている。またトリミング装置３８により個々に切断分割された包装体３６は、搬送コンベア３９に集積されて次工程に搬送されることになる。
【００２５】
そして、本実施形態によれば、第１粉粒体（Ａ）と第２粉粒体（Ｂ）とが略均一に混合されて堆積部１６に堆積した混合物２６は、当該堆積部１６の直下において４方シール充填包装装置１１によって少量ずつ袋詰めされることになり、混合物２７の各粉粒体（Ａ），（Ｂ）が搬送時に偏在するのを効果的に回避しつつ混合物２６の袋詰めを行うことが可能になって、バラツキのない精度の良い製品を確実に得ることが可能になる。
【００２６】
なお、本発明は上記実施形態に限定されることなく種々の変更が可能である。例えば、本発明は、上述の配合の入浴剤に限定されることなく、粒径、比重、又は形状の異なる２種以上の粉粒体を混合して得られる種々の混合物を形成するべく各種の製品に用いることができ、これらの混合物は、家庭用品や食料品の他、工業用原料等であっても良い。また混合物を袋詰めする装置の直前において２種以上の粉粒体を混合する必要は必ずしもなく、混合された混合物は、搬送装置により次工程に搬送して用いることもできる。さらに、２種以上の粉粒体を少量ずつ混合する場合に限定されることなく、多量の粉粒体を混合する際に用いることもできる。その場合は、各計量マス２８，２９は不要となり、粉粒体搬送装置３２，３３から直接外郭体１８の内部へ各粉粒体（Ａ），（Ｂ）を供給しても良い。
【００２７】
また、残りの１種以上の粉粒体を横方向に送り出す送出し装置は、回転羽根や回転ドラム等の回転体によるものである必要は必ずしもなく、例えば空気等を噴射して方向転換させることにより、横方向に送り出すようなものであっても良い。なお、回転羽根を使用した場合には、平均粒径の大きな粉粒体（Ｂ）の各粒子は断続的な流れになり、一方、空気等を噴射するものの場合には、平均粒径の大きな粉粒体（Ｂ）の各粒子を拡散させる効果がある。
【００２８】
【発明の効果】
本発明の粉粒体混合方法及び粉粒体混合装置によれば、２種以上の粉粒体を簡易な構成で分級が生じないように迅速に混合することができる。また、堆積部に堆積した粉粒体の混合物を、当該堆積部の直下において袋詰め等するようにすれば、混合形成された混合物の各粉粒体が搬送時に分級するのを回避しつつ混合物の袋詰め等を行って、２種以上の粉粒体からなる混合物をばらつきなく容易に製品化することが可能になる。
【図面の簡単な説明】
【図１】本発明の一実施形態に係る粉粒体混合装置を組み込んだ製造装置の構成を説明する略示断面図である。
【図２】本発明の一実施形態に係る粉粒体混合装置の構成を説明する略示断面図である。
【符号の説明】
１０粉粒体混合装置
１１４方シール充填包装装置
１２第１粉粒体投入口
１３第２粉粒体投入口
１４天面部
１５排出シュート
１６堆積部
１７外郭体の下端部
１８外郭体
１９送り出し装置
２２回転軸
２３回転体（送り出し装置）
２６混合物
２７可動シュート
３４シールロール
３５包装材料
Ａ第１粉粒体（１種以上の粉粒体）
Ｂ第２粉粒体（残りの１種以上の粉粒体）[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder and particle mixing method and an apparatus therefor, and in particular, a mixing method and a mixing device for mixing two or more powder particles having different particle diameters, specific gravity, or shapes so as not to classify each particle About.
[0002]
[Prior art]
A wide variety of powders are supplied to the market as household goods, foodstuffs, industrial raw materials, etc., and these powders are stored in bags and containers and commercialized for distribution and sales. Generally provided. In addition, the granular material is often produced in a state where two or more types having different particle diameters, specific gravity, shape, etc. are mixed. When mixing two or more types of such granular materials, It is necessary to accommodate the two or more types of granular materials in a bag or container after they are uniformly mixed without being classified.
[0003]
As an apparatus for uniformly mixing two or more kinds of powder particles having different particle diameters, specific gravity, shapes, etc., a device that performs stirring and mixing by a mechanical action (for example, see Patent Document 1) or a jet sprayed. Various mixing devices such as those that perform stirring and mixing with compressed air (see, for example, Patent Document 2) are known.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-29083 [Patent Document 2]
Japanese Patent Laid-Open No. 7-32363
[Problems to be Solved by the Invention]
According to the above-described conventional mixing apparatus for uniformly mixing two or more kinds of granular materials, a mixture is formed by mixing a large amount of granular materials at once, and then the obtained mixture is screw conveyor or the like. Since the product is delivered to the next step for commercialization, such as the bagging process, the tableting process, the injection molding process, etc. A large apparatus is required so that the mixture can be well formed. In addition, it takes a considerable amount of time to mix two or more kinds of large amounts of powder particles accurately and uniformly. Furthermore, the uniformity of the mixture formed by being affected by the action of vibration, stirring, etc. inside the conveying device such as a screw conveyor before being conveyed to the next process for commercialization. At the same time, the powder particles are classified, and the mixing ratio is likely to vary.
[0006]
An object of the present invention is to provide a powder and particle mixing method and a powder and particle mixing apparatus capable of quickly mixing two or more kinds of particles and particles so as not to be classified with a simple configuration.
[0007]
In addition, the present invention can easily mix a mixture of two or more kinds of powder particles without any variation by carrying out bagging of the mixture while avoiding the classification of each powder particle of the mixture thus formed during transportation. An object of the present invention is to provide a powder and particle mixing method and a powder and particle mixing device that can be commercialized.
[0008]
[Means for Solving the Invention]
The present invention is a mixing method in which two or more kinds of powder particles having different particle sizes, specific gravity, or shapes are mixed, and one or more kinds of powder particles (A) are dropped and the remaining one or more kinds of powder particles are dropped. The one or more types of fallen powder (B) are dropped and the remaining one or more types of fallen powder (B) are redirected in a lateral direction via a feeding device. By providing a powder mixing method for feeding and joining the flow of the powder (A) and mixing the two or more kinds of the merged powder ((A) + (B)) while dropping them, The above objective has been achieved.
[0009]
Moreover, this invention is a granular material mixing apparatus used for the said granular material mixing method, Comprising: While having a 1st granular material input port and a 2nd granular material input port in a top | upper surface part, a discharge chute in a lower end part A hollow outer body having a depositing portion provided with a particle, and a powder that is provided below the second granular material inlet in the outer body and is dropped from the second granular material inlet A flow of the one or more types of granular material (A), which is composed of a feeding device that changes the direction so as to feed the body in the lateral direction, and is dropped from the first granular material charging port and falls toward the accumulation portion The remaining one or more types of powder (B) dropped from the second powder granule inlet are changed in direction so as to be sent out laterally via the feeding device and dropped. By feeding and joining the flow of the one or more types of granular materials (A) By providing a granular material mixing apparatus for depositing on the deposition unit merging the said two or more powder particles of ((A) + (B) ) were mixed while falling, which was achieved the above objects is there.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The granular material mixing apparatus 10 according to a preferred embodiment of the present invention shown in FIG. 1 is obtained by mixing two or more types of granular materials ((A) + (B)) having different particle diameters, specific gravity, or shapes. As a product to be used, for example, it is incorporated in an apparatus for producing a bathing agent, and the two or more kinds of powders ((A) + (B)) are classified into the powders (A) and (B). The mixture 26 is mixed almost uniformly so as not to occur, and the resulting mixture 26 is fed to the four-side seal filling and packaging device 11 disposed below the powder and particle mixing device 10. A bathing agent can be produced by bagging the mixture 26 made of seeds or more ((A) + (B)).
[0011]
Here, according to the present embodiment, the bath agent has a composition as shown in Table 1 including calcium oxide, fumaric acid, sodium carbonate, and a water-absorbing polymer. This bathing agent is used by putting these compositions in a water bag and sticking to a part of the body that feels stiff shoulders or back pain. And when immersed in a bathtub, calcium oxide in the mixture generates heat due to a hydration reaction, and a thermal effect is obtained.
[0012]
[Table 1]

[0013]
Further, according to this embodiment, the calcium oxide blended in the bath agent is a granular material having an average particle size of 1000 to 1400 μm and a specific gravity of 0.9 to 1.0, and fumaric acid has an average particle size of 180 to It is a granular material of 250 μm and specific gravity of 0.8 to 1.1. Further, sodium carbonate is a granular material having an average particle size of 90 to 125 μm and a specific gravity of 0.5 to 0.8, and the water-absorbing polymer is a granular material having an average particle size of 250 to 355 μm and a specific gravity of 0.63 to 0.71.
[0014]
Of these four types of particles ((A) + (B)) having different particle sizes, specific gravity, or shapes, three types of fumaric acid, sodium carbonate, and water-absorbing polymer having the same average particle size and shape The powder (A) is easy to mix in a state of being dispersed substantially uniformly without classifying each powder according to the blending ratio using various known mixing devices, The obtained mixture becomes a mixture in which each granular material is difficult to classify during transportation. On the other hand, calcium oxide which is the remaining one type of granular material (B) is significantly different in average particle size and shape from these three types of granular material (A), and particularly its average particle size. Since the diameter is 4 to 12 times the average particle size of fumaric acid, sodium carbonate, or water-absorbing polymer, it is difficult to achieve substantially uniform dispersion and mixing with these three types of granules (A) in accordance with the blending ratio. Even if mixed almost uniformly, it is considered that classification is likely to occur during transport through various transport devices.
[0015]
According to this embodiment, three types of granular materials (A) of fumaric acid, sodium carbonate, and a water-absorbing polymer having substantially the same average particle size and shape, and these three types of granular materials having an average particle size and shape. It is possible to mix calcium oxide, which is significantly different from (A), in a state where the calcium oxide is substantially uniformly dispersed in accordance with the blending ratio, and to avoid classification during conveyance. In order to obtain a product having no variation, the powder and particle mixing apparatus 10 and the powder and particle mixing method of the present invention have been adopted.
[0016]
And the granular material mixing apparatus 10 of this embodiment makes 2 or more types of granular materials ((A) + (B)) from which a particle size, specific gravity, or a shape differs into each granular material (A), ( B) A mixing apparatus used in the mixing method for mixing so as not to be classified, and as shown in FIGS. 1 and 2, the first granular material inlet 12 and the second granular material are charged into the top surface portion 14. A hollow outer body 18 having a mouth portion 13 and having a depositing portion 16 provided with a discharge chute 15 at the lower end portion 17, and provided inside the outer body body 18 below the second powder body inlet 13. It consists of a feeding device 19 that changes the direction of the powder B that is dropped from the second powder inlet 13 and dropped in the horizontal direction. In the flow of one or more types of granular material (A) falling toward the The remaining one or more kinds of the granular materials (B) are sent out in the lateral direction through the delivery device 19 and merged to flow down two or more kinds of the granular materials ((A) + (B)). The mixture is mixed and deposited on the deposition part 16.
[0017]
The outer body 18 constituting the powder and particle mixing device 10 of the present embodiment has a substantially triangular cross section in the lower half of the hollow box 24 whose flat cross section has a rectangular shape with a size of about 150 to 200 mm. The hollow inclined portions 25 are connected and integrated. And the lower half part of the hollow inclined part 25 located in the lower end part 17 of the outer body 18 is a deposition part 16 for depositing a mixture 26 of two or more kinds of granular materials ((A) + (B)). At the same time, the lower end portion of the hollow inclined portion 25 becomes a discharge chute 15 having a discharge port for discharging the mixture 26 accumulated in the accumulation portion 16 toward the movable chute 27 of the four-side seal filling and packaging apparatus 11 described later. Yes.
[0018]
In addition, the outer body 18 is provided with a top surface portion 14 that can be opened and closed so as to cover the upper end opening thereof, and the first powder and granule inlet 12 that can be opened and closed formed in the top surface portion 14 and the second powder. A first measuring mass 28 and a second measuring mass 29 are provided above the granule inlet 13. Each of the weighing

masses

28 and 29 is connected to the supply ports of the first and second granular

material supply chutes

30 and 31 through the granular material mixing and conveying device 32. The first powder mass (A), which is a mixture of three types of powder particles of fumaric acid, sodium carbonate, and water-absorbing polymer, which have slightly different average particle diameters and shapes, is blended in a predetermined manner by the first measuring mass 28. Weigh to the amount. Further, the second measurement mass is defined as a second granular material (B), which is a calcium oxide granular material, which is the remaining one granular material having a different average particle diameter and shape, conveyed from the granular material conveying device 33. 29 and weigh so that a predetermined blending amount is obtained.
[0019]
According to this embodiment, the delivery device 19 constituting the powder and particle mixing device 10 is constituted by a rotating body 23 such as a rotating blade or a rotating drum that rotates around a horizontal rotating shaft 22. That is, the delivery device 19 is provided inside the outer body 18 and disposed below the second granular material inlet 13, and is rotated at a high speed in the R direction at a rotational speed of about 200 to 1000 rpm, for example. For example, the second powder (B) dropped from the granular material inlet 13 is changed in direction so as to be sent out in the lateral direction, and is injected from the first granular material inlet 12 toward the deposition unit 16. It can be merged with the flow of the first granular material (A) that falls substantially vertically downward at a flow velocity of about 100 to 200 cm / second.
[0020]
And according to the granular material mixing apparatus 10 of this embodiment, the 1st granular material (A) and the 2nd granular material (B) which were respectively weighed to the predetermined compounding quantity by each

measurement mass

28 and 29, Is controlled to be dropped into the outer body 18 while controlling the amount of opening of the first granular material charging port 12 and the second granular material charging port 13, and the rotation as the feeding device 19 is controlled. With a simple configuration that only rotates the body 23 at a high speed, the first powder (A) and the second powder (B) are substantially uniform without being classified according to a predetermined blending ratio set in advance. It becomes possible to go to mix.
[0021]
That is, according to the present embodiment, the first granular material (A) is substantially vertically downward (substantially in the vertical direction) as a band-shaped flow from the first granular material inlet 12 toward the deposition unit 16 due to its own weight. When falling, the contact between the particles of the granular material is loosened, a considerable gap is generated between them, and the second powder having a large average particle diameter fed from the lateral direction through the rotating body 23 Since the dropping direction of the granule (B) is continuously changed by the rotating body 23, the second granule is easily inserted into the gap between the loosened first granule (A). The flow of the body (B) is smoothly mixed and mixed with the flow of the first granular material (A) without stagnation. As a result, a mixture 26 in which the second powder particles (B) having a large average particle diameter are substantially uniformly dispersed without being classified into the first powder particles (A) is rapidly formed in the accumulation portion 16. It will accumulate.
[0022]
In addition, according to the present embodiment, the powder and particle mixing device 10 has a simple and compact configuration as described above, and is particularly suitable for applications in which the mixture 26 is formed little by little. As shown in FIG. 1, it is incorporated into an apparatus for producing a bathing agent, and placed and used immediately above the four-side seal filling and packaging apparatus 11 for bagging and commercializing the formed mixture 26, thereby achieving a long distance. In addition, it is possible to easily maintain the state in which the powder particles (A) and (B) are substantially uniformly dispersed and mixed by immediately bagging the mixture 26 formed by mixing. Become.
[0023]
Here, the four-side seal filling and packaging device 11 is obtained by adding various improvements to the four-side seal filling and packaging device described in, for example, Japanese Patent Application Laid-Open No. 2000-53104. A pair of film-like packaging materials 35 inserted in a bite shape are continuously supplied to a pair of seal rolls 34 that are continuously arranged and rotated in contact with each other. By supplying the mixture 26 via the movable chute 27 that linearly moves in and out in the tangential direction, the mixture 26 of the supplied first and second powder bodies (A) and (B) is provided. Is packaged in a packaging material 35 while being sealed in four directions.
[0024]
Further, according to the present embodiment, the four-side seal filling and packaging apparatus 11 includes a seal roll 34 and a four-way seal in order to reduce the head space of each package 36 in which the mixture 26 is packed with the packaging material 35 by the four-side seal. A pair of secondary seal rolls 37 having different seal patterns are disposed below the seal roll 34. In general, four-side sealed packing has a bag filling rate of around 50%, so a large space is created in the upper part of the bag, and the filled powder can move freely. The particles are easily classified by vibrations during transportation, and the effect of the present invention is lost. Therefore, if the secondary seal roll 37 is added to crush the upper space of the bag and fix the powder particles in the bag, classification is not easily performed. Furthermore, according to this embodiment, the trimming device 38 for cutting and dividing the package 36 formed continuously in the vertical and horizontal directions into individual packages 36 is provided below the secondary seal roll 37. Further, the packaging body 36 cut and divided individually by the trimming device 38 is accumulated on the transport conveyor 39 and transported to the next process.
[0025]
According to the present embodiment, the mixture 26 in which the first powder (A) and the second powder (B) are substantially uniformly mixed and deposited on the deposition part 16 is directly below the deposition part 16. In this way, the four-side seal filling and packaging apparatus 11 packs the bag little by little, and effectively avoids the uneven distribution of the powder particles (A) and (B) of the mixture 27 during transport. It becomes possible to perform packing, and it becomes possible to reliably obtain an accurate product without variation.
[0026]
The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the present invention is not limited to the bathing agent having the above-mentioned composition, and various kinds of compounds can be formed to form various mixtures obtained by mixing two or more kinds of particles having different particle diameters, specific gravity, or shapes. It can be used for products, and these mixtures may be household materials, foodstuffs, industrial raw materials and the like. In addition, it is not always necessary to mix two or more kinds of granular materials immediately before the device for bagging the mixture, and the mixed mixture can be transported to the next step by a transport device and used. Further, the present invention is not limited to the case where two or more kinds of powder particles are mixed little by little, and can also be used when a large amount of powder particles are mixed. In this case, the weighing

masses

28 and 29 are not necessary, and the powder particles (A) and (B) may be supplied directly from the powder

particle conveyance devices

32 and 33 into the outer body 18.
[0027]
Further, the delivery device that sends out the remaining one or more types of powder particles in the lateral direction does not necessarily have to be based on a rotating body such as a rotary blade or a rotating drum. For example, the direction is changed by injecting air or the like. Therefore, it is possible to send out in the horizontal direction. In addition, when a rotary blade is used, each particle | grain of a granular material (B) with a large average particle diameter becomes an intermittent flow, on the other hand, in the case of what injects air etc., a big average particle diameter is large. There is an effect of diffusing each particle of the granular material (B).
[0028]
【The invention's effect】
According to the granular material mixing method and the granular material mixing apparatus of the present invention, two or more kinds of granular materials can be quickly mixed with a simple configuration so that classification is not caused. In addition, if the mixture of powder particles accumulated in the accumulation part is packed in the bag directly under the accumulation part, the mixture is formed while avoiding classification of each particle of the mixture formed during transportation. Thus, it is possible to easily produce a mixture of two or more kinds of granular materials without variation.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view illustrating a configuration of a manufacturing apparatus incorporating a powder and particle mixing apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view illustrating a configuration of a powder and particle mixing apparatus according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Powder body mixing apparatus 11 Four-way seal filling packaging apparatus 12 1st powder body charging port 13 2nd powder body charging port 14 Top surface part 15 Discharge chute 16 Accumulation part 17 Lower end part 18 of outer body 18 Outer body 19 Delivery apparatus 22 Rotating shaft 23 Rotating body (Feeding device)
26 Mixture 27 Movable chute 34 Seal roll 35 Packaging material A 1st granular material (1 or more types of granular material)
B 2nd granular material (1 or more types of remaining granular materials)

Claims

A mixing method of mixing two or more kinds of particles having different particle sizes, specific gravity, or shapes,
While dropping 1 or more types of granular material (A), dropping the remaining 1 or more types of granular material (B),
The remaining one or more types of powder particles (B) that are falling are redirected in a lateral direction via a delivery device and fed into the flow of the one or more types of powder particles (A) that are falling. Merge at
A powder mixing method in which the two or more types of powder ((A) + (B)) that have joined together are dropped and mixed.

The method of mixing particles according to claim 1, wherein the flow of the one or more types of particles (A) is a substantially vertical flow.

The average particle size of the remaining one or more types of granular material (B) fed into the flow of the granular material (A) is 4 to the average particle size of the one or more types of granular material (A) that flows down. It is 12 times, The granular material mixing method of Claim 1 or 2.

The method for mixing granular materials according to any one of claims 1 to 3, wherein the mixed granular materials ((A) + (B)) are packaged.

It is a granular material mixing apparatus used for the granular material mixing method in any one of Claims 1-4,
A hollow outer body having a first granular material inlet and a second granular body inlet in the top surface portion and a depositing portion provided with a discharge chute at the lower end, and the second outer shell inside the outer body. A feeding device that is provided below the powder inlet, and changes the direction so that the powder dropped from the second powder inlet is sent in the lateral direction;
In the flow of the one or more types of granular material (A) that is introduced from the first granular material introduction port and falls toward the deposition part, the flow is introduced from the second granular material introduction port and falls. The remaining one or more types of granular materials (B) are changed in direction so as to be sent out in the lateral direction via the delivery device, and are fed into the flow of the falling one or more types of granular materials (A). By mixing, the two or more types of powder particles ((A) + (B)) that have joined together are dropped and mixed, and the powder material mixing device deposits the particles on the accumulation part.

The granular material mixing apparatus according to claim 5, wherein the delivery device is a rotating body that rotates about a horizontal rotation axis.