JP2007083241A - Medium agitation type crushing device - Google Patents

Medium agitation type crushing device Download PDF

Info

Publication number
JP2007083241A
JP2007083241A JP2006353891A JP2006353891A JP2007083241A JP 2007083241 A JP2007083241 A JP 2007083241A JP 2006353891 A JP2006353891 A JP 2006353891A JP 2006353891 A JP2006353891 A JP 2006353891A JP 2007083241 A JP2007083241 A JP 2007083241A
Authority
JP
Japan
Prior art keywords
impeller
medium
classification
stirring member
drive shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2006353891A
Other languages
Japanese (ja)
Other versions
JP4953805B2 (en
Inventor
Takeshi Ishikawa
剛 石川
Masakatsu Iioka
正勝 飯岡
Toshihiro Ishii
利博 石井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ashizawa Finetech Ltd
Original Assignee
Ashizawa Finetech Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ashizawa Finetech Ltd filed Critical Ashizawa Finetech Ltd
Priority to JP2006353891A priority Critical patent/JP4953805B2/en
Publication of JP2007083241A publication Critical patent/JP2007083241A/en
Application granted granted Critical
Publication of JP4953805B2 publication Critical patent/JP4953805B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/1835—Discharging devices combined with sorting or separating of material
    • B02C17/184—Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/161—Arrangements for separating milling media and ground material

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medium agitation type crushing device which can achieve not only reliable separation of crushed particles and a crushing medium but also classification action due to sizes of particles when a crushing medium with a microdiameter is used, obtain a minute product crushed to have a narrow particle size distribution, and reduce the wear of a separator. <P>SOLUTION: In the medium agitation type crushing device, its agitation member is a hollow cylinder which has a cylindrical wall on the outer periphery, and opens at one end. In the cylindrical wall, a plurality of circulation openings for circulating the crushing medium are formed at intervals in the circumference of the cylindrical wall. An impeller for classification which rotates coaxially with the agitation member is disposed in the hollow inside of the agitation member. The impeller for classification is equipped with a plurality of blade members arranged circumferentially at intervals. Action of the rotating blade members of the impeller for classification gives radial outward movement to the crushing medium with a large specific gravity by centrifugal force, and discharges raw materials containing crushed materials to the outside through the inside of the impeller for classification. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、攪拌部材を有する筒状の容器内に粉砕用媒体が入れられ、該容器に被粉砕原料を導入して攪拌部材を回転駆動することにより粉砕媒体に運動を生じさせ、被粉砕原料を微細粒子に粉砕するように構成された媒体攪拌型粉砕装置に関する。本発明の装置は、限定する意味ではないが、インク、塗料、顔料、セラミック、金属、無機物、フェライト、トナー、ガラス等の原料を微細粒子に粉砕または分散するための使用に特に適している。   In the present invention, a pulverization medium is placed in a cylindrical container having a stirring member, and the pulverization medium is caused to move by introducing the material to be pulverized into the container and rotationally driving the stirring member. The present invention relates to a medium agitation type pulverizing apparatus configured to pulverize a powder into fine particles. The device of the present invention is particularly suitable for use to pulverize or disperse raw materials such as, but not limited to, inks, paints, pigments, ceramics, metals, inorganics, ferrites, toners, and glass into fine particles.

媒体攪拌型粉砕装置は、粒子原料を微細粒子に粉砕または分散する用途において多用されている。この種の装置においては、原料出口において被粉砕原料を粉砕用媒体から分離するために分離装置が設けられる。従来の粉砕装置において採用されている分離装置は、スクリーン或いは固定部と回転部との間に形成した微細スリットの形態によるものが一般的である。   The medium agitation type pulverizer is frequently used in applications in which a particle raw material is pulverized or dispersed into fine particles. In this type of apparatus, a separation device is provided to separate the material to be ground from the grinding medium at the material outlet. A separation device employed in a conventional pulverizer is generally in the form of a fine slit formed between a screen or a fixed portion and a rotating portion.

スクリーン又はスリットの形態の分離装置は、近年要求が高まっているナノテクノロジーに対処するには多くの問題をはらむことが認識されている。すなわち、ナノテクノロジーにおいて要求される超微細粒子を効率的に得るには、粉砕媒体の寸法を従来に比し大幅に小さくすることが必要になる。しかし、従来の分離装置では、粉砕用媒体を小さくすると、短期間で目詰まりを生じ、かつ分離装置の部品磨耗も大きく、頻繁に整備や修理を行うことが必要になる。現在の技術では、粉砕媒体の大きさは、０．２ｍｍが限界であるといわれている。   It has been recognized that separation devices in the form of screens or slits present a number of problems in dealing with the increasingly demanding nanotechnology. That is, in order to efficiently obtain ultrafine particles required in nanotechnology, it is necessary to significantly reduce the size of the grinding medium as compared with the conventional one. However, in the conventional separation apparatus, if the pulverizing medium is made small, clogging occurs in a short period of time, and the wear of the parts of the separation apparatus is large, so that frequent maintenance and repair are required. In the current technology, it is said that the limit of the size of the grinding medium is 0.2 mm.

従来の媒体攪拌型粉砕装置における上述の問題に対処するための提案が、幾つかなされている。これらの提案は、下記のものである。
特開２００２−３０６９４０号公報 国際公開ＷＯ９６／３９２５１号 粉体工学会誌第４１巻第８号（通巻４２３号）第１６ページないし第２３ページ、平成１６年８月１０日発行 粉体工学会第４０回夏季シンポジウム講演論文集、２００４年７月２９日〜３０日、第１３ページないし第１４ページ、技術講演５「微小ビーズ対応ビーズミルの凝集ナノ粒子の分散」 Several proposals have been made to address the above-described problems in conventional media agitation type pulverizers. These proposals are as follows.
JP 2002-306940 A International Publication No. WO96 / 39251 Journal of Powder Engineering, Vol. 41, No. 8 (Vol. 423), pages 16 to 23, issued on August 10, 2004 Proceedings of the 40th Summer Symposium of the Japan Society for Powder Technology, July 29-30, 2004, pages 13-14, Technical Lecture 5 “Dispersion of Aggregated Nanoparticles in Bead Mill for Microbeads”

非特許文献１及び２は、遠心力を利用して粉砕媒体と被粉砕粒子を含むスラリーとの分離を行うことにより、０．０３ｍｍサイズのビーズ状粉砕媒体を使用できるようにした媒体攪拌型粉砕装置を開示している。そして、これらの文献においては、このように微小サイズの粉砕媒体を使用して、攪拌部材の回転速度を特定の範囲にすることにより、粉砕又は分散された粒子の再凝集を防止して、微細な粉砕効果が達成できたことが報告されている。これらの文献では、この装置で０．０３ｍｍサイズのビーズ状粉砕媒体を使用して粉砕を行う場合、ロータすなわち攪拌部材の周速１０ｍ／ｓにおいて最良の粉砕効果を達成できると述べている。   Non-Patent Documents 1 and 2 describe a medium agitation type pulverization in which a bead-shaped pulverizing medium having a size of 0.03 mm can be used by separating a pulverizing medium and a slurry containing particles to be pulverized using centrifugal force. An apparatus is disclosed. And in these documents, by using a pulverizing medium of such a small size and setting the rotation speed of the stirring member within a specific range, reaggregation of pulverized or dispersed particles is prevented, and It has been reported that a good grinding effect could be achieved. In these documents, it is stated that the best pulverization effect can be achieved at a peripheral speed of 10 m / s of the rotor, that is, the stirring member, when pulverization is performed using a bead-shaped pulverization medium having a size of 0.03 mm.

特許文献２は、非特許文献１及び２に示された粉砕装置についての国際特許出願である。この文献に開示される粉砕装置では、分離装置は、スラリー出口側において攪拌部材を有する攪拌軸に取り付けられた一対のディスクを備える。これら一対のディスクの間にはブレードが配置され、これらディスクの間の空間が攪拌軸の中空内部に連通する。攪拌軸の中空内部がスラリー出口を構成する。   Patent Document 2 is an international patent application regarding the pulverization apparatus shown in Non-Patent Documents 1 and 2. In the pulverization apparatus disclosed in this document, the separation apparatus includes a pair of disks attached to a stirring shaft having a stirring member on the slurry outlet side. A blade is disposed between the pair of disks, and the space between the disks communicates with the hollow interior of the stirring shaft. The hollow interior of the stirring shaft constitutes the slurry outlet.

非特許文献１及び２並びに特許文献２に記載された粉砕装置においては、一対のディスクとブレードからなる分離装置が攪拌軸により回転駆動されるため、被粉砕粒子より比重の大きい粉砕媒体が遠心力により半径方向外向きに付勢され、被粉砕粒子を含むスラリーのみが出口から排出される。この遠心作用により、０．０３ｍｍといった極めて小さいサイズの粉砕媒体でも分離装置の目詰まりを生じさせることなく分離を行うことができるものと理解される。   In the pulverization apparatuses described in Non-Patent Documents 1 and 2 and Patent Document 2, a separation device composed of a pair of disks and blades is rotationally driven by a stirring shaft. The slurry is biased outward in the radial direction, and only the slurry containing the particles to be crushed is discharged from the outlet. By this centrifugal action, it is understood that even a pulverized medium having a very small size of 0.03 mm can be separated without causing clogging of the separation device.

しかし、これの文献に記載された粉砕装置では、分離装置が、粉砕装置のスラリー出口側端部において攪拌部材に対し軸方向に並んで配置されているので、粉砕媒体が容器のスラリー出口付近に密集することは避けられず、実験段階ではある程度の効果が得られるとしても、長時間にわたる連続運転が必要になる実用機では、分離装置に目詰まりを生じることは避けられない。   However, in the pulverization apparatus described in these documents, the separation apparatus is arranged in the axial direction with respect to the stirring member at the slurry outlet side end of the pulverization apparatus, so that the pulverization medium is near the slurry outlet of the container. It is inevitable that the devices are densely packed, and even if a certain level of effect can be obtained in the experimental stage, clogging of the separation device is unavoidable in a practical machine that requires continuous operation over a long period of time.

特許文献１は、円筒状容器内に環状隙間を介して円筒状のロータを回転自在に配置し、該環状隙間からロータ内部を通り排出口に至る流路を形成した媒体攪拌型粉砕装置を開示する。この装置においては、ロータ内の流路の途中に、粉砕媒体をスラリーから分離するための遠心分離装置が設けられ、遠心分離した粉砕媒体を環状隙間に送り出すための循環用開口部がロータに形成される。遠心分離装置は、ロータの回転駆動軸内を貫通する別の回転駆動軸により回転駆動される。この特許文献１の粉砕装置では、遠心分離装置は、その回転駆動軸の端部に取り付けられた複数の羽根部材からなる羽根車により構成され、ロータ内の流路を通るスラリー及び粉砕媒体は、この羽根車の軸心に向けて送られて、羽根車の回転に伴い比重の大きい粉砕媒体が半径方向外向きに押しやられることにより、スラリーから分離される。この文献には、直径が０．１ｍｍの粉砕媒体を使用した例が示されている。   Patent Document 1 discloses a medium agitation type pulverizing apparatus in which a cylindrical rotor is rotatably disposed in a cylindrical container through an annular gap, and a flow path is formed from the annular gap through the rotor to the discharge port. To do. In this apparatus, a centrifuge for separating the pulverized medium from the slurry is provided in the middle of the flow path in the rotor, and a circulation opening is formed in the rotor for feeding the centrifuged pulverized medium to the annular gap. Is done. The centrifugal separator is rotationally driven by another rotational drive shaft that passes through the rotational drive shaft of the rotor. In the pulverizing apparatus of this Patent Document 1, the centrifugal separator is constituted by an impeller composed of a plurality of blade members attached to the end of the rotation drive shaft, and the slurry and the pulverizing medium passing through the flow path in the rotor are: The pulverization medium having a large specific gravity is pushed toward the axial center of the impeller and is separated from the slurry by being pushed radially outward as the impeller rotates. This document shows an example in which a grinding medium having a diameter of 0.1 mm is used.

この特許文献１に記載された装置では、スラリーと粉砕媒体の混合物が、ロータ内の流路から羽根車の軸心部分に直接送り込まれるので、粉砕媒体が分離装置の羽根に直接当り、該羽根によって半径方向外向きに弾き飛ばされることになり、羽根車の早期の磨耗を生じる。また、この粉砕装置では、遠心分離装置部分においてスラリーに乱流が生じるため、粒子の粒度による分級作用を期待することができず、粒子は幅広い範囲に分布する粒度範囲をもつものとなる。   In the apparatus described in Patent Document 1, the mixture of the slurry and the grinding medium is fed directly from the flow path in the rotor to the shaft center portion of the impeller, so that the grinding medium directly hits the blades of the separator, and the blades Will blow off radially outward, causing premature wear of the impeller. Further, in this pulverizer, turbulent flow is generated in the slurry in the centrifugal separator portion, so that the classification action due to the particle size of the particles cannot be expected, and the particles have a wide particle size range.

本発明は、微小直径の粉砕媒体を使用する場合に、被粉砕粒子と粉砕媒体との確実な分離だけでなく、粒子の粒度による分級作用も達成できて、微細で、かつ、狭い粒度分布幅に粉砕された製品を得ることができ、しかも、分離装置の磨耗が少ない媒体攪拌型粉砕装置を提供することを課題とする。   In the present invention, when using a pulverizing medium having a small diameter, not only reliable separation between the pulverized particles and the pulverizing medium but also classification by the particle size of the particles can be achieved, and the particle size distribution width is fine and narrow. It is an object of the present invention to provide a medium agitation type pulverizing apparatus that can obtain a pulverized product and that has little wear on the separator.

上記課題を解決するため、本発明は、原料入口を有する筒状の容器内に攪拌部材が回転自在に配置され、該容器内に形成される粉砕室に粉砕媒体が入れられており、原料入口から被粉砕物を含む原料を導入しながら攪拌部材を回転駆動することにより粉砕媒体を攪拌し、被粉砕物を微細粒子に粉砕するようになった媒体攪拌型粉砕装置に関する。本発明の粉砕装置においては、攪拌部材は、外周部に筒状壁を有し一端が端部開口により開口した中空の筒型とし、筒状壁には粉砕媒体循環のための複数の循環用開口を該筒状壁の周方向に間隔をもって形成する。攪拌部材の中空内部には、該攪拌部材と同軸に回転自在に分級用羽根車を配置する。分級用羽根車は、周方向に間隔をもって配置された複数の羽根部材を備え、回転する分級用羽根車の羽根部材の作用により比重の大きい粉砕媒体に遠心力により半径方向外向き運動を与えるとともに、該分級用羽根車の内部を介して、粉砕された被粉砕物を含む原料を外部に排出するようになっている。上記分級用羽根車の上記複数の羽根部材は、天板と、該天板に対して軸方向に間隔をもって配置された底板との間に周方向に間隔をもって固定されていることが好ましい。天板には中空の羽根車駆動軸が固定され、該羽根車駆動軸の中空内部が羽根車の天板と底板との間の空間に開口して原料出口を形成することが好ましい。羽根車駆動軸は、容器を貫通して外部に延び外部駆動源により回転駆動されることが好ましい。   In order to solve the above-mentioned problems, the present invention provides a stirring member rotatably disposed in a cylindrical container having a raw material inlet, and a pulverization medium is placed in a pulverization chamber formed in the container. The present invention relates to a medium agitation type pulverizing apparatus in which a pulverizing medium is stirred by rotating a stirring member while introducing a raw material containing a pulverized material from the pulverized material to pulverize the pulverized material into fine particles. In the pulverizing apparatus of the present invention, the stirring member is a hollow cylindrical shape having a cylindrical wall at the outer peripheral portion and one end opened by an end opening, and the cylindrical wall is used for a plurality of circulations for circulating the pulverizing medium. Openings are formed at intervals in the circumferential direction of the cylindrical wall. A classification impeller is disposed in the hollow inside of the stirring member so as to be rotatable coaxially with the stirring member. The classifying impeller includes a plurality of blade members arranged at intervals in the circumferential direction, and imparts a radially outward motion to the grinding medium having a large specific gravity by centrifugal force due to the action of the blade members of the rotating classification wheel. The raw material containing the pulverized material to be pulverized is discharged to the outside through the inside of the classification impeller. It is preferable that the plurality of blade members of the classification impeller are fixed at intervals in the circumferential direction between the top plate and a bottom plate disposed at intervals in the axial direction with respect to the top plate. It is preferable that a hollow impeller drive shaft is fixed to the top plate, and a hollow interior of the impeller drive shaft opens into a space between the top plate and the bottom plate of the impeller to form a raw material outlet. It is preferable that the impeller drive shaft extends through the container and is rotated by an external drive source.

粉砕装置の作動においては、例えば被粉砕用の粒子を含むスラリーを原料入口から粉砕室に導入しながら攪拌部材と羽根車を回転駆動する。攪拌部材の回転により、粉砕媒体には攪拌運動が与えられ、スラリー内の粒子は粉砕媒体から与えられる剪断作用により粉砕ないしは分散作用を受ける。粉砕媒体及びスラリーは、攪拌部材の一端の端部開口から該攪拌軸部材の中空内部に入る。ここで、粉砕媒体及びスラリーは、分級用羽根車により回転運動を与えられ、比重の大きい粉砕媒体は、遠心力の作用により半径方向外向きの運動を生じて攪拌部材の筒状壁に形成した循環用開口から粉砕室に戻される。このようにして、粉砕媒体には、粉砕室から端部開口を通って攪拌部材の中空内部に入り、攪拌部材の円筒壁の循環用開口から粉砕室に戻る循環運動が与えられる。比重の小さいスラリーは、被粉砕粒子を伴って天板と底板との間の間隙から原料出口に出る。   In the operation of the pulverizing apparatus, for example, the stirring member and the impeller are rotationally driven while introducing a slurry containing particles to be pulverized from the raw material inlet into the pulverization chamber. By the rotation of the stirring member, a stirring motion is given to the grinding medium, and the particles in the slurry are ground or dispersed by a shearing action given from the grinding medium. The grinding medium and the slurry enter the hollow interior of the stirring shaft member from the end opening at one end of the stirring member. Here, the grinding media and the slurry are given a rotational motion by the classifying impeller, and the grinding media having a large specific gravity is formed on the cylindrical wall of the stirring member by generating a radially outward motion by the action of centrifugal force. It returns to the grinding chamber from the circulation opening. In this way, the pulverizing medium is given a circulating motion from the pulverization chamber through the end opening into the hollow interior of the stirring member and returning from the circulation opening in the cylindrical wall of the stirring member to the pulverization chamber. The slurry having a small specific gravity exits from the gap between the top plate and the bottom plate to the raw material outlet with the particles to be crushed.

分級用羽根車の回転を攪拌部材の回転とは独立に制御できるようにすると、該羽根車を分級のために最適な攪拌点数で駆動できるようになり、優れた分級効果を達成することができる。典型的には、攪拌部材の回転速度は４〜１５ｍ／ｓとすればよいが、最も普通の回転速度は１０〜１２ｍ／ｓである。分級用羽根車の回転速度は、典型的には４〜２０ｍ／ｓとすればよいが、通常は１０ｍ／ｓで十分に満足できる効果が得られる。   If the rotation of the impeller for classification can be controlled independently of the rotation of the stirring member, the impeller can be driven with an optimal number of stirring points for classification, and an excellent classification effect can be achieved. . Typically, the rotation speed of the stirring member may be 4 to 15 m / s, but the most common rotation speed is 10 to 12 m / s. The rotational speed of the impeller for classification is typically 4 to 20 m / s, but a satisfactory effect is usually obtained at 10 m / s.

本発明においては、羽根車が天板と底板、及びその間に挟まれた複数の羽根部材とから構成されるので、循環する粉砕媒体が直接はね部材に当ることがなく、羽根部材の急激な磨耗が防止される。   In the present invention, since the impeller is composed of the top plate, the bottom plate, and a plurality of blade members sandwiched between the top plate and the bottom plate, the circulating pulverizing medium does not directly hit the splash member, and the blade member is abrupt. Abrasion is prevented.

攪拌部材は、円筒壁を挟んで端部開口とは軸方向反対側に放射状のフランジを有する形状とし、この放射状のフランジにも粉砕媒体の循環用開口を形成することができる。   The stirring member has a shape having a radial flange on the side opposite to the end opening in the axial direction across the cylindrical wall, and an opening for circulating the grinding medium can also be formed in the radial flange.

以下、本発明の実施形態を図面を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１及び図２を参照すると、これらの図は本発明の第１の実施形態を示すものであり、図示される媒体攪拌型粉砕装置１は、円筒形のベッセル２と、該ベッセル２の一端部に固定された端板３及び他端部に固定されたフレーム４により構成された容器を備える。ベッセル２の内部には、攪拌部材５が配置される。   Referring to FIGS. 1 and 2, these drawings show a first embodiment of the present invention. A medium stirring type pulverizer 1 shown in FIG. 1 includes a cylindrical vessel 2 and one end of the vessel 2. A container constituted by an end plate 3 fixed to the part and a frame 4 fixed to the other end. A stirring member 5 is disposed inside the vessel 2.

攪拌部材５は、一端部に端部開口５ａが形成された円筒壁５ｂと、該円筒壁５ｂの他端に形成されたフランジ５ｃからなり、フランジ５ｃには回転駆動軸６が固定されている。回転駆動軸６は、フレーム４を軸方向に貫通して延び、端部は、図示しない駆動用プーリ等の周知の駆動機構を介して電動モータ等の駆動源に接続されており、図２に矢印で示す方向に回転駆動される。円筒壁５ｂには、図２に示すように周方向に間隔をもって媒体循環用開口となるスリット５ｄが形成されている。スリット５ｄは、攪拌部材５の回転方向に対して、図２に示す方向に斜めに傾斜させることが好ましい。攪拌部材５のフランジ５ｃにも、複数の媒体循環用開口５ｅが、図２に示すように周方向に間隔をもって形成される。   The stirring member 5 includes a cylindrical wall 5b having an end opening 5a formed at one end thereof, and a flange 5c formed at the other end of the cylindrical wall 5b. A rotation drive shaft 6 is fixed to the flange 5c. . The rotary drive shaft 6 extends through the frame 4 in the axial direction, and an end thereof is connected to a drive source such as an electric motor through a known drive mechanism such as a drive pulley (not shown). It is rotationally driven in the direction indicated by the arrow. As shown in FIG. 2, the cylindrical wall 5b is formed with slits 5d serving as medium circulation openings at intervals in the circumferential direction. The slit 5 d is preferably inclined obliquely in the direction shown in FIG. 2 with respect to the rotation direction of the stirring member 5. A plurality of medium circulation openings 5e are also formed in the flange 5c of the stirring member 5 at intervals in the circumferential direction as shown in FIG.

攪拌部材５と容器の内壁面との間には、粉砕室７が形成される。フレーム４には、粉砕室７にスラリーを導入するための原料入口８が形成される。また、媒体攪拌型粉砕装置において周知のように、容器内部にはビーズ状の粉砕媒体９が入れられる。   A crushing chamber 7 is formed between the stirring member 5 and the inner wall surface of the container. The frame 4 is formed with a raw material inlet 8 for introducing the slurry into the grinding chamber 7. Further, as is well known in the medium stirring type pulverizing apparatus, a bead-shaped pulverizing medium 9 is placed inside the container.

攪拌部材５の中空内部には、分級用羽根車１０が配置される。羽根車１０は、天板１０ａと該天板１０ａに対し軸方向に間隔をもって配置された底板１０ｂを備え、天板１０ａと底板１０ｂとの間には、複数の羽根部材１０ｃが周方向に間隔をもって配置され、天板１０ａと底板１０ｂに固定されている。天板１０ａには、その中心部に中空の回転駆動軸１１が固定されている。駆動軸１１は、攪拌部材５の駆動軸６を貫通するように配置され、端部が図示しない駆動用プーリ等の周知の駆動機構を介して電動モータ等の駆動源に接続されている。この実施形態では、駆動軸６と駆動軸１１は、互いに独立して異なる回転数で駆動される。羽根車１０の駆動軸１１は、その中空内部が天板１０ａと底板１０ｂの間の空間に開口して、粉砕済みのスラリーを容器外に排出する原料出口１２を構成している。   A classification impeller 10 is disposed inside the hollow of the stirring member 5. The impeller 10 includes a top plate 10a and a bottom plate 10b that is spaced axially with respect to the top plate 10a, and a plurality of blade members 10c are spaced circumferentially between the top plate 10a and the bottom plate 10b. Are fixed to the top plate 10a and the bottom plate 10b. A hollow rotary drive shaft 11 is fixed to the center of the top plate 10a. The drive shaft 11 is disposed so as to penetrate the drive shaft 6 of the stirring member 5, and an end thereof is connected to a drive source such as an electric motor via a known drive mechanism such as a drive pulley (not shown). In this embodiment, the drive shaft 6 and the drive shaft 11 are driven at different rotational speeds independently of each other. The drive shaft 11 of the impeller 10 has a hollow interior that opens into a space between the top plate 10a and the bottom plate 10b, and constitutes a raw material outlet 12 that discharges the crushed slurry to the outside of the container.

駆動軸６とフレーム４との間には軸封シール１３が配置され、駆動軸６と駆動軸１１との間には軸封シール１４が配置されている。駆動軸６は軸受１５によりフレーム４に回転自在に支持され、駆動軸１１は軸受１６により駆動軸６に回転自在に支持されている。   A shaft seal 13 is disposed between the drive shaft 6 and the frame 4, and a shaft seal 14 is disposed between the drive shaft 6 and the drive shaft 11. The drive shaft 6 is rotatably supported on the frame 4 by a bearing 15, and the drive shaft 11 is rotatably supported on the drive shaft 6 by a bearing 16.

作動においては、原料入口８から被粉砕粒子を含むスラリーを導入しながら攪拌部材５及び羽根車１０を回転駆動する。粉砕室７内に導入されたスラリーは、粉砕媒体９とともに攪拌され、粉砕室内で回転運動を生じる。この粉砕媒体の回転運動のため、粉砕室内においては媒体攪拌型粉砕装置に周知の作用により、スラリー内の被粉砕粒子が粉砕ないしは分散される。スラリーは、粉砕媒体９とともに攪拌部材５の端部開口５ａ及び媒体循環用開口５ｅから攪拌部材５の中空内部に入る。ここで、スラリー及び粉砕媒体９には羽根車１０により回転運動が与えられる。この回転運動により、比重の大きい粉砕媒体９は半径方向外向きに付勢され、攪拌部材５の円筒壁５ｂに形成したスリット５ｄから粉砕室７に戻される。この場合、被粉砕粒子のうち、粉砕が不十分で粒子サイズが大きいものも同様に挙動する。一方、十分に粉砕されて比重が小さくなった粒子を含むスラリーは、羽根車１０の天板１０ａと底板１０ｂの間の空間に入り、駆動軸１１の内部の原料出口から排出される。この構成により、粒度分布幅の狭い粉砕を達成することが可能になる。   In operation, the stirring member 5 and the impeller 10 are rotationally driven while introducing the slurry containing the particles to be crushed from the raw material inlet 8. The slurry introduced into the pulverizing chamber 7 is stirred together with the pulverizing medium 9, and causes a rotational motion in the pulverizing chamber. Due to this rotational movement of the pulverizing medium, the particles to be pulverized in the slurry are pulverized or dispersed in the pulverizing chamber by a known action of the medium stirring type pulverizing apparatus. The slurry enters the hollow interior of the stirring member 5 together with the grinding medium 9 from the end opening 5a of the stirring member 5 and the medium circulation opening 5e. Here, the slurry and the grinding medium 9 are given a rotational motion by the impeller 10. By this rotational movement, the grinding medium 9 having a large specific gravity is urged outward in the radial direction, and returned to the grinding chamber 7 from the slit 5d formed in the cylindrical wall 5b of the stirring member 5. In this case, among the particles to be pulverized, particles that are not sufficiently pulverized and have a large particle size behave similarly. On the other hand, the slurry containing particles that have been sufficiently pulverized and have a small specific gravity enters the space between the top plate 10 a and the bottom plate 10 b of the impeller 10 and is discharged from the raw material outlet inside the drive shaft 11. This configuration makes it possible to achieve pulverization with a narrow particle size distribution width.

図３は、本発明の粉砕装置の第２の実施形態を示す図１と同様な断面図である。図２においては、図１の実施形態における部分と対応する部分に同一の符号を付して示す。図３に示す実施形態は、分級用羽根車１０の駆動軸１１が攪拌部材５の駆動軸６を通らず、端板３と一体に形成された支持フレーム３ａを通るように配置されている点が、図１の実施形態と異なる。   FIG. 3 is a cross-sectional view similar to FIG. 1 showing a second embodiment of the crushing apparatus of the present invention. In FIG. 2, parts corresponding to those in the embodiment of FIG. The embodiment shown in FIG. 3 is arranged such that the drive shaft 11 of the classification impeller 10 does not pass through the drive shaft 6 of the stirring member 5 but passes through the support frame 3 a formed integrally with the end plate 3. However, it differs from the embodiment of FIG.

図４は、本発明の粉砕装置を使用する一態様を示す概略図である。粉砕装置１の原料出口１２は、パイプ２０の一端に接続され、該パイプ２０の他端はスラリータンク１７の上部に開放されている。タンク１７の底部はパイプ２１によりポンプ２２を介して粉砕装置１の原料入口８に接続される。スラリータンク１７内には、電動モータ１８により回転駆動される攪拌羽根１９が配置される。この配置により、スラリーは被粉砕粒子が所望の微細粒に粉砕されるまで、繰り返し粉砕装置１に通される。   FIG. 4 is a schematic view showing an embodiment in which the crushing apparatus of the present invention is used. The raw material outlet 12 of the pulverizer 1 is connected to one end of a pipe 20, and the other end of the pipe 20 is open to the upper part of the slurry tank 17. The bottom of the tank 17 is connected to the raw material inlet 8 of the crushing apparatus 1 through a pump 22 by a pipe 21. In the slurry tank 17, a stirring blade 19 that is rotationally driven by an electric motor 18 is disposed. With this arrangement, the slurry is repeatedly passed through the pulverizer 1 until the particles to be pulverized are pulverized into desired fine particles.

以上、被粉砕粒子が液体に含まれるスラリーの形で粉砕装置に送られる湿式法について本発明の実施形態を説明したが、本発明は、乾式法にも同様に適用できるものである。   As mentioned above, although embodiment of this invention was described about the wet method in which the to-be-ground particle | grains are sent to the grinding | pulverization apparatus in the form of the slurry contained in a liquid, this invention is applicable also to a dry method similarly.

本発明の粉砕装置の一実施形態を示す断面図である。It is sectional drawing which shows one Embodiment of the grinding | pulverization apparatus of this invention. 図１のＡ−Ａ線に沿った横断面図である。It is a cross-sectional view along the AA line of FIG. 本発明の他の実施形態を示す図１と同様な断面図である。It is sectional drawing similar to FIG. 1 which shows other embodiment of this invention. 本発明の装置の一使用形態を示す概略図である。It is the schematic which shows one usage pattern of the apparatus of this invention.

符号の説明Explanation of symbols

１ 粉砕装置
２ ベッセル
３ 端板
４ フレーム
５ 攪拌部材
５ａ 端部開口
５ｂ 円筒壁
５ｄ スリット
６ 駆動軸
８ 原料入口
１０ 分級用羽根車
１０ａ 天板
１０ｂ 底板
１０ｃ 羽根部材
１１ 駆動軸
１２ 原料出口
DESCRIPTION OF SYMBOLS 1 Crusher 2 Vessel 3 End plate 4 Frame 5 Stirring member 5a End opening 5b Cylindrical wall 5d Slit 6 Drive shaft 8 Material inlet 10 Classification impeller 10a Top plate 10b Bottom plate 10c Blade member 11 Drive shaft 12 Material outlet

Claims (3)

原料入口を有する筒状の容器内に攪拌部材が回転自在に配置され、前記容器内に形成される粉砕室に粉砕媒体が入れられており、前記原料入口から被粉砕物を含む原料を導入して前記攪拌部材を回転駆動することにより前記粉砕媒体を攪拌し、被粉砕物を微細粒子に粉砕するようになった媒体攪拌型粉砕装置であって、
前記攪拌部材は、外周部に筒状壁を有し一端が端部開口により開口した中空の筒型であり、前記筒状壁には粉砕媒体循環のための複数の循環用開口が該筒状壁の周方向に間隔をもって形成され、
前記攪拌部材の中空内部には、前記攪拌部材と同軸に回転する分級用羽根車が配置され、
前記分級用羽根車は、周方向に間隔をもって配置された複数の羽根部材を備え、
回転する分級用羽根車の羽根部材の作用により比重の大きい粉砕媒体に遠心力により半径方向外向き運動を与えるとともに、該分級用羽根車の内部を介して、粉砕された被粉砕物を含む原料を外部に排出するようになっている
ことを特徴とする媒体攪拌型粉砕装置。 A stirring member is rotatably disposed in a cylindrical container having a raw material inlet, and a pulverization medium is placed in a pulverization chamber formed in the container, and a raw material including a material to be crushed is introduced from the raw material inlet. The stirring member is rotated to drive the stirring medium, and the medium stirring type pulverizing apparatus is configured to pulverize the object to be crushed into fine particles,
The stirring member is a hollow cylindrical shape having a cylindrical wall at an outer peripheral portion and one end opened by an end opening, and the cylindrical wall has a plurality of circulation openings for circulating a grinding medium. It is formed at intervals in the circumferential direction of the wall,
In the hollow inside of the stirring member, a classification impeller that rotates coaxially with the stirring member is disposed,
The classifying impeller includes a plurality of blade members arranged at intervals in the circumferential direction,
A raw material containing an object to be pulverized through the inside of the classification impeller while giving a radially outward movement to the pulverizing medium having a large specific gravity by centrifugal force by the action of the blade member of the rotating classification impeller. A medium agitation type pulverizer characterized in that it is discharged to the outside. 請求項１に記載した粉砕装置であって、前記分級用羽根車は、天板と、前記天板に対して軸方向に間隔をもって配置された底板とを備え、前記複数の羽根部材が前記天板と底板との間に固定され、前記天板には中空の羽根車駆動軸が固定され、前記羽根車駆動軸の中空内部が前記羽根車の前記天板と底板との間の空間に開口して原料出口を形成しており、前記羽根車駆動軸は前記容器を貫通して外部に延び外部駆動源により回転駆動されるようになっていることを特徴とする粉砕装置。   2. The crushing apparatus according to claim 1, wherein the classification impeller includes a top plate and a bottom plate disposed at an interval in an axial direction with respect to the top plate, and the plurality of blade members are the top plate. A hollow impeller drive shaft is fixed to the top plate, and a hollow interior of the impeller drive shaft is opened in a space between the top plate and the bottom plate of the impeller. A crushing apparatus characterized in that a raw material outlet is formed, and the impeller drive shaft extends through the container to the outside and is rotated by an external drive source. 請求項１または２に記載した粉砕装置であって、前記羽根車駆動軸は前記攪拌部材とは独立して回転駆動されることを特徴とする粉砕装置。   3. The crushing apparatus according to claim 1, wherein the impeller drive shaft is rotationally driven independently of the stirring member. 4.
JP2006353891A 2006-12-28 2006-12-28 Medium stirring type crusher Active JP4953805B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006353891A JP4953805B2 (en) 2006-12-28 2006-12-28 Medium stirring type crusher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006353891A JP4953805B2 (en) 2006-12-28 2006-12-28 Medium stirring type crusher

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2005025483A Division JP2006212488A (en) 2005-02-01 2005-02-01 Medium stirring type grinder

Publications (2)

Publication Number Publication Date
JP2007083241A true JP2007083241A (en) 2007-04-05
JP4953805B2 JP4953805B2 (en) 2012-06-13

Family

ID=37970755

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006353891A Active JP4953805B2 (en) 2006-12-28 2006-12-28 Medium stirring type crusher

Country Status (1)

Country Link
JP (1) JP4953805B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006212488A (en) * 2005-02-01 2006-08-17 Ashizawa Finetech Ltd Medium stirring type grinder
CN102580824A (en) * 2012-03-13 2012-07-18 周波 High-efficiency grinding system
CN103418485A (en) * 2013-04-27 2013-12-04 占天义 Grinding separator
JP5404955B1 (en) * 2013-06-03 2014-02-05 アシザワ・ファインテック株式会社 Medium agitating crusher
CN105880001A (en) * 2016-05-09 2016-08-24 占天义 Stirring type grinding separator and grinding device
CN107774208A (en) * 2017-12-11 2018-03-09 洛阳乐森石化新材料有限公司 A kind of stirring system of polymerization reaction kettle

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0210699B2 (en) * 1983-12-16 1990-03-09 Geburu* Netsushu Mas Fab
JPH0760147A (en) * 1993-08-20 1995-03-07 Premier Mill Corp Agitating and pulverizing device
JPH07299375A (en) * 1994-05-09 1995-11-14 Masumi Kusunoki Stirring mill for grinding into fine powder
JPH0824694A (en) * 1994-07-15 1996-01-30 Mitsubishi Heavy Ind Ltd Separation equipment for annular type medium mill
JPH0889833A (en) * 1994-09-09 1996-04-09 Evv Vermoegensverwaltungs Gmbh Agitation mill
JPH10230182A (en) * 1997-02-18 1998-09-02 Mitsui Mining Co Ltd Grinder
JP2001046899A (en) * 1999-08-12 2001-02-20 Taiyo Yuden Co Ltd Bead mill
JP2002028514A (en) * 2000-07-14 2002-01-29 Mitsui Mining Co Ltd Crusher
JP2003299976A (en) * 2002-04-09 2003-10-21 Mitsubishi Heavy Ind Ltd Dispersing machine for material to be treated
JP2006007128A (en) * 2004-06-28 2006-01-12 Kansai Paint Co Ltd Annular type bead mill, pigment dispersion system provided with it and pigment dispersion method using the system
JP2006212488A (en) * 2005-02-01 2006-08-17 Ashizawa Finetech Ltd Medium stirring type grinder

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0210699B2 (en) * 1983-12-16 1990-03-09 Geburu* Netsushu Mas Fab
JPH0760147A (en) * 1993-08-20 1995-03-07 Premier Mill Corp Agitating and pulverizing device
JPH07299375A (en) * 1994-05-09 1995-11-14 Masumi Kusunoki Stirring mill for grinding into fine powder
JPH0824694A (en) * 1994-07-15 1996-01-30 Mitsubishi Heavy Ind Ltd Separation equipment for annular type medium mill
JPH0889833A (en) * 1994-09-09 1996-04-09 Evv Vermoegensverwaltungs Gmbh Agitation mill
JPH10230182A (en) * 1997-02-18 1998-09-02 Mitsui Mining Co Ltd Grinder
JP2001046899A (en) * 1999-08-12 2001-02-20 Taiyo Yuden Co Ltd Bead mill
JP2002028514A (en) * 2000-07-14 2002-01-29 Mitsui Mining Co Ltd Crusher
JP2003299976A (en) * 2002-04-09 2003-10-21 Mitsubishi Heavy Ind Ltd Dispersing machine for material to be treated
JP2006007128A (en) * 2004-06-28 2006-01-12 Kansai Paint Co Ltd Annular type bead mill, pigment dispersion system provided with it and pigment dispersion method using the system
JP2006212488A (en) * 2005-02-01 2006-08-17 Ashizawa Finetech Ltd Medium stirring type grinder

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006212488A (en) * 2005-02-01 2006-08-17 Ashizawa Finetech Ltd Medium stirring type grinder
CN102580824A (en) * 2012-03-13 2012-07-18 周波 High-efficiency grinding system
CN103418485A (en) * 2013-04-27 2013-12-04 占天义 Grinding separator
JP5404955B1 (en) * 2013-06-03 2014-02-05 アシザワ・ファインテック株式会社 Medium agitating crusher
US9895697B2 (en) 2013-06-03 2018-02-20 Ashizawa Finetech Ltd. Media-agitation type pulverizer
CN105880001A (en) * 2016-05-09 2016-08-24 占天义 Stirring type grinding separator and grinding device
CN105880001B (en) * 2016-05-09 2023-07-04 博亿(深圳)工业科技有限公司 Stirring type grinding separator, grinding separation device and grinding device
CN107774208A (en) * 2017-12-11 2018-03-09 洛阳乐森石化新材料有限公司 A kind of stirring system of polymerization reaction kettle

Also Published As

Publication number Publication date
JP4953805B2 (en) 2012-06-13

Similar Documents

Publication Publication Date Title
JP2006212488A (en) Medium stirring type grinder
JP4991372B2 (en) Media stirring mill
KR101233574B1 (en) Circular type media stirred mill
JP5261002B2 (en) Media mixing mill
JP5463065B2 (en) Media stirring mill
JP4205620B2 (en) Ball mill with agitator
JP4918226B2 (en) Media agitation type wet crusher
JP2006212489A (en) Grinding method using medium stirring type grinder
JP4953805B2 (en) Medium stirring type crusher
JP4684000B2 (en) Medium stirring type crusher
JP4886993B2 (en) Media stirring type wet disperser
JP5159102B2 (en) Vertical media stirring mill
JP2011177639A (en) Medium agitation mill
JP5912324B2 (en) Media stirring mill
JP4901353B2 (en) Media stirring mill
JP2003144950A (en) Pulverizer
JP6808212B2 (en) Media circulation type crusher
JP2003181316A (en) Medium agitation and crushing device and crushing treatment system having the device
JP4918272B2 (en) Circulation type media stirring mill
JP2005199125A (en) Medium agitation mill
KR200385083Y1 (en) A Device of Wet Milling Machine for Separating and Discharging Fine Grained Powder
JP2012179535A (en) Wet medium agitation mill
JP2005246316A (en) Medium agitation type wet pulverizer
WO2019087274A1 (en) Bead mill
KR20090104715A (en) Media mixing mill

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080108

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20090331

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101026

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101210

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110628

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110824

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120306

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120313

R150 Certificate of patent or registration of utility model

Ref document number: 4953805

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150323

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250