JP2006297208A - Immersion type medium dispersing device - Google Patents
Immersion type medium dispersing device Download PDFInfo
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本発明は、分散媒体(ビーズ)が充填された分散室を処理材料(ミルベース)中に浸漬し、該分散室内に処理材料を循環させて該分散室内で分散処理するようにした浸漬型媒体分散装置に関するものである。 The present invention relates to an immersion type medium dispersion in which a dispersion chamber filled with a dispersion medium (beads) is immersed in a treatment material (mill base), and the treatment material is circulated in the dispersion chamber for dispersion treatment in the dispersion chamber. It relates to the device.
タンク内に分散媒体を収納した分散室を浸漬してバッチ式に分散処理するようにした浸漬型媒体分散装置が種々知られている(例えば、特許文献1参照)。この浸漬型の媒体分散装置は、処理材料を流動させるための流動用羽根を駆動軸に設けて分散室内に処理材料が流入するようにしたり、ポンプ作用を奏するロータリーディスクポンプ型のディスクを分散室内に設けて分散室内に処理材料を吸引し、分散室内で分散処理された処理材料が分散室の側壁等に設けたスクリーンを通して分散室外に流出するよう構成されている。このスクリーンは、分散媒体が分散室外へ流出しない程度に開口する小孔やスリットを有しているが、微細に分散処理するため粒径の小さい分散媒体を用いるときには、小径等もそれに応じて微細な形状に構成しなければならないから、すぐに目詰り等の故障を生じやすかった。 Various immersion-type medium dispersion apparatuses are known in which a dispersion chamber containing a dispersion medium is immersed in a tank and dispersed in a batch manner (see, for example, Patent Document 1). This immersion-type medium dispersing apparatus is provided with a flow blade for flowing a processing material on a drive shaft so that the processing material flows into the dispersion chamber, or a rotary disk pump type disk having a pump action is provided in the dispersion chamber. The treatment material is sucked into the dispersion chamber and the treatment material dispersed in the dispersion chamber flows out of the dispersion chamber through a screen provided on the side wall of the dispersion chamber. This screen has small holes and slits that open to the extent that the dispersion medium does not flow out of the dispersion chamber. However, when a dispersion medium with a small particle size is used for fine dispersion processing, the small diameter and the like are correspondingly fine. Therefore, it was easy to cause a failure such as clogging immediately.
処理材料を処理槽内に供給し、分散処理後、処理材料を処理槽から吐出する形式の湿式媒体分散装置では、処理材料と分散媒体の質量差(比重差)を利用し遠心力作用により処理材料と分散媒体を分離する媒体分離機構が知られている(例えば、特許文献2参照)。この方式によれば、粒径の小さい微小分散媒体でも分離することが可能であるが、上述の如き浸漬型媒体分散装置にそのまま適用することがむずかしかった。 In a wet type media dispersion device that supplies processing material into the processing tank and discharges the processing material from the processing tank after dispersion processing, the processing material is processed by centrifugal force action using the mass difference (specific gravity difference) between the processing material and the dispersion medium. A medium separation mechanism for separating a material and a dispersion medium is known (see, for example, Patent Document 2). According to this method, it is possible to separate even a fine dispersion medium having a small particle diameter, but it has been difficult to directly apply to the immersion medium dispersion apparatus as described above.
すなわち、従来の遠心力利用の媒体分離機構は、処理槽内に駆動軸で回転される媒体分離ローターを設け、処理材料は、上記駆動軸と別に設けたポンプ等で処理槽内に供給するようにしてあるので、処理材料の供給と媒体分離ローターの回転を別々に制御することができ、分散媒体を分離するために必要な所望の遠心力を生じるよう媒体分離ローターの回転を自由に調整することができる。 That is, the conventional medium separation mechanism using centrifugal force is provided with a medium separation rotor that is rotated by a drive shaft in the treatment tank, and the treatment material is supplied into the treatment tank by a pump or the like provided separately from the drive shaft. Therefore, the supply of processing material and the rotation of the media separation rotor can be controlled separately, and the rotation of the media separation rotor can be freely adjusted to produce the desired centrifugal force necessary to separate the dispersion medium. be able to.
一方、浸漬型媒体分散装置の場合は、駆動軸により回転される羽根やロータリーディスクポンプ型のディスクにより分散室内に処理材料を流入(吸引)させるようにしているから、閉鎖的に形成された分散室内に設けた媒体分離ローターにより処理材料と分散媒体の混合物に遠心力を生じさせると、遠心力作用で生じた流動のために該分散室内に処理材料が流入(吸引)されにくくなり、上記遠心力作用が大きくなればなる程、処理材料が分散室内に流入(吸引)されなくなる。
本発明の解決課題は、分散室を処理材料中に浸漬して分散処理を行う浸漬型媒体分散装置において、微細な粒径の分散媒体を用いても目詰り等を生じにくくできるよう遠心力作用による媒体分離機構を採用でき、しかも処理材料が分散室内に確実に吸引されて分散処理できるようにした浸漬型媒体分散装置を提供することである。 The problem to be solved by the present invention is that it is a centrifugal force action so that clogging and the like are less likely to occur even in the case of using a dispersion medium having a fine particle size in an immersion type medium dispersion apparatus that performs dispersion treatment by immersing the dispersion chamber in a treatment material. It is another object of the present invention to provide a submerged medium dispersion apparatus that can employ the medium separation mechanism according to the above, and that allows the treatment material to be reliably sucked into the dispersion chamber for dispersion treatment.
上述したように、単に媒体分離ローターを設けただけの浸漬型媒体分散装置の構造を図1を参照して詳述すると、タンク(1)内の処理材料(2)中に浸漬される分散室(3)は、内部に分散媒体(図示略)が収納され、処理材料が流入する吸引口(4)を有しているがほぼ全体は閉鎖的に構成されている。そして、該分散室(3)内には、処理材料を該分散室内に吸引して分散処理するためのロータリーディスクポンプ型の吸引ローター(5)があり、駆動軸(6)で該吸引ローター(5)を回転する。このような浸漬型媒体分散装置において、遠心力作用を用いて分散媒体と処理材料の比重差により該分散媒体と処理材料を分離するには、上記駆動軸(6)に形成した吐出路(7)の内方開口(8)を囲んで媒体分離ローター(9)を設ければよい。このようにすれば、該媒体分離ローター(9)の遠心力作用で分散媒体は上記内方開口(8)に入らず、処理材料のみが該内方開口(8)を通って上記吐出路(7)に入り、その先端に形成した外方開口(10)からタンク内に吐出されるはずである。 As described above, the structure of the immersion type medium dispersion device in which the medium separation rotor is simply provided will be described in detail with reference to FIG. 1. The dispersion chamber immersed in the processing material (2) in the tank (1). (3) has a suction port (4) into which a dispersion medium (not shown) is housed and a processing material flows, but is almost entirely closed. In the dispersion chamber (3), there is a rotary disk pump type suction rotor (5) for sucking the treatment material into the dispersion chamber for dispersion treatment, and the suction rotor (6) is driven by the drive shaft (6). 5) Rotate. In such a submerged medium dispersion apparatus, in order to separate the dispersion medium and the treatment material by the difference in specific gravity between the dispersion medium and the treatment material using centrifugal force action, a discharge path (7) formed on the drive shaft (6) is used. The medium separation rotor (9) may be provided so as to surround the inner opening (8). In this case, the dispersion medium does not enter the inner opening (8) due to the centrifugal force action of the medium separating rotor (9), and only the processing material passes through the inner opening (8) to the discharge path ( 7) should enter and be discharged into the tank from the outer opening (10) formed at its tip.
しかし、実際には、図1に示すような構造では、閉鎖的な分散室内に生じた遠心力作用による流動で、処理材料は分散室から流出しようとし、上記吸引口から処理材料が分散室に入りにくくなり、大きな遠心力を生じさせるよう媒体分離ローターの周速を増加させると、上記吸引口(4)から処理材料が逆流するような現象もみられた。 However, in practice, in the structure as shown in FIG. 1, the processing material tends to flow out of the dispersion chamber due to the flow of centrifugal force generated in the closed dispersion chamber, and the processing material enters the dispersion chamber from the suction port. When the peripheral speed of the medium separation rotor is increased so as to make it difficult to enter and generate a large centrifugal force, a phenomenon has also been observed in which the processing material flows backward from the suction port (4).
一方、図2に示すように、上記吐出路(7)の外方開口(10)の周囲に上記媒体分離ローター(9)と全く同じ形状の吐出補助ローター(11)を設けて駆動軸(6)を回転すると、上記媒体分離ローターによる遠心力作用とバランスさせることができ、各ローター(9)、(11)による吐出量qが同じになり、結果的には上記駆動軸(6)に設けた吐出路(7)を通しての吐出は起こらなくなる。 On the other hand, as shown in FIG. 2, a discharge auxiliary rotor (11) having the same shape as the medium separating rotor (9) is provided around the outer opening (10) of the discharge passage (7) to provide a drive shaft (6 ) Can be balanced with the centrifugal force action by the medium separation rotor, and the discharge amount q by each rotor (9), (11) becomes the same, as a result, provided on the drive shaft (6). The discharge through the discharge path (7) does not occur.
そのように、媒体分離ローター(9)と吐出補助ローター(11)を設けてバランスさせた状態で、図3に示すように分散室に吸引ローター(5)を設ければ、該吸引ローター(5)により吸引口から分散室内に吸引され吸引量と上記外方開口(10)からタンク中に吐出される吐出量が同じ流量となり、流量Qで処理材料が分散室内に流入、流出するはずである。 When the suction rotor (5) is provided in the dispersion chamber as shown in FIG. 3 with the medium separation rotor (9) and the discharge auxiliary rotor (11) being balanced, the suction rotor (5 ), The suction amount is sucked into the dispersion chamber from the suction port and the discharge amount discharged into the tank from the outer opening (10) becomes the same flow rate, and the processing material should flow into and out of the dispersion chamber at the flow rate Q. .
さらに、上記媒体分離ローター(9)により処理材料と分散媒体の混合物に与えられる運動速度V1(cm/sec)は、遠心力場における流体にストークスの式を適用すると、下記のようになる。
ここで、上記式中の遠心効果Zは下記のようになる。
一方、図4に示すように、上記媒体分離ローターの中心部方向へ向って上記吐出路へ流れる処理材料(スラリー)の速度V2(cm/sec)は、吐出量Q(cm3/sec)、媒体分離ローターの開口面積S(cm2)とすると、V2=Q/Sとなる。 On the other hand, as shown in FIG. 4, the speed V2 (cm / sec) of the processing material (slurry) flowing into the discharge path toward the center of the medium separation rotor is a discharge amount Q (cm 3 / sec), Assuming the opening area S (cm 2 ) of the medium separating rotor, V2 = Q / S.
従って、媒体分離ローターにおいて、中心方向へ移動する処理材料の速度V2が上記遠心力場における流体中の運動速度V1よりも小さければ、すなわちV1>V2となれば、比重の大きな分散媒体(ビーズ)は速度V1で媒体分離ローターの外周方向へ移動し、比重の小さな処理材料は速度V2で中心方向へ移動することになり、微細な粒径の分散媒体でも確実に分離することができる。 Therefore, in the medium separation rotor, if the speed V2 of the processing material moving toward the center is smaller than the motion speed V1 in the fluid in the centrifugal field, that is, if V1> V2, the dispersion medium (bead) having a large specific gravity. Moves at the speed V1 toward the outer periphery of the medium separation rotor, and the processing material having a small specific gravity moves toward the center at the speed V2, so that even a dispersion medium having a fine particle diameter can be reliably separated.
上記のような考察に基づき、本発明によれば、分散媒体を収納し下部に吸引口を有する分散室と、該分散室内に設けられた吸引ローターと、一端が該吸引ローターに連結し他端が上記分散室の外方に延出する駆動軸と、該駆動軸に設けられ一端が上記分散室内に開口する内方開口に連通し他端が上記分散室外に開口する外方開口に連通する吐出路と、上記内方開口を囲むように設けられた遠心分離ディスクを含む媒体分離ローターと、上記外方開口を囲むように設けられた吐出補助ディスクを含む吐出補助ローターを具備する浸漬型媒体分散装置が提供され、上記課題が解決される。 Based on the above considerations, according to the present invention, a dispersion chamber containing a dispersion medium and having a suction port at the bottom, a suction rotor provided in the dispersion chamber, and one end connected to the suction rotor and the other end Is connected to a drive shaft extending outward of the dispersion chamber, an inner opening provided on the drive shaft and opening in the dispersion chamber, and the other end connected to an outer opening opening outside the dispersion chamber. A submerged medium comprising a discharge path, a medium separation rotor including a centrifugal disc provided so as to surround the inner opening, and a discharge auxiliary rotor including a discharge auxiliary disk provided so as to surround the outer opening. A distribution device is provided to solve the above problems.
本発明は上記のように構成され、吸引ローターを駆動する駆動軸に内方開口と外方開口を有する吐出路を形成し、内方開口の周囲に媒体分離ローターを設け外方開口の周囲に吐出補助ローターを設けたので、該媒体分離ローターと吐出補助ローターの吐出量をバランスさせることによりロータリーディスクポンプ型の吸引ローターで分散室内に処理材料を吸引できると共に分散処理することができ、上記媒体分離ローターで分散媒体を分離して分散処理後の処理材料のみを上記吐出路を通してタンク内に吐出することができる。 The present invention is configured as described above, and a discharge path having an inner opening and an outer opening is formed in a drive shaft that drives the suction rotor, and a medium separation rotor is provided around the inner opening, and the outer opening is provided around the outer opening. Since the discharge auxiliary rotor is provided, by balancing the discharge amounts of the medium separation rotor and the discharge auxiliary rotor, the processing material can be sucked into the dispersion chamber and distributed by the rotary disk pump type suction rotor. The dispersion medium is separated by the separation rotor, and only the treated material after the dispersion treatment can be discharged into the tank through the discharge path.
図5は、本発明の浸漬型媒体分散装置の一実施例を示し、分散室(3)は、胴部(12)の上下に上板部(13)と下板部(14)を有し、上板部(13)に取り付けた支持杆(15)により図示を省いた支持ヘッドに連結され、タンク(図示略)中に浸漬される。上記下板部(14)には、吸引口(4)が形成され、該吸引口(4)には略截頭円錐状の吸引筒(16)が設けられている。 FIG. 5 shows an embodiment of the immersion type medium dispersing apparatus of the present invention. The dispersion chamber (3) has an upper plate portion (13) and a lower plate portion (14) above and below the trunk portion (12). A support rod (15) attached to the upper plate portion (13) is connected to a support head (not shown) and immersed in a tank (not shown). The lower plate portion (14) is formed with a suction port (4), and the suction port (4) is provided with a substantially frustoconical suction cylinder (16).
上記分散室(3)の上板部(13)には、分散室内に充填した分散媒体(ビーズ)(17)の流出を阻止するビーズ止めブッシュ(18)を介して駆動軸(6)が挿通しており、該駆動軸(6)の下端には肉厚の駆動ディスク(19)が設けられている。そして、該駆動ディスク(19)と共にロータリーディスクポンプ型の吸引ローター(5)を形成するよう該駆動ディスク(19)の下方には、中央に貫通孔(20)を有する吸引ディスク(21)、(21)が対向状態に配置され、ディスタンスカラー(22)、ねじ(23)により駆動ディスク(19)に固定されている。 The drive shaft (6) is inserted into the upper plate (13) of the dispersion chamber (3) through a bead stop bush (18) that prevents the dispersion medium (beads) (17) filled in the dispersion chamber from flowing out. A thick drive disk (19) is provided at the lower end of the drive shaft (6). A suction disk (21) having a through hole (20) in the center is formed below the drive disk (19) so as to form a rotary disk pump type suction rotor (5) together with the drive disk (19). 21) is arranged in an opposed state and is fixed to the drive disk (19) by a distance collar (22) and a screw (23).
上記駆動軸(6)の中心部には吐出路(7)が形成され、該吐出路(7)の一端は上記分散室(3)内に開口する内方開口(8)に連通し、他端は分散室外に開口する外方開口(10)に連通している。該内方開口(8)及び外方開口(10)の数、大きさ、形状等は所望により適宜に設定することができる。 A discharge path (7) is formed at the center of the drive shaft (6), and one end of the discharge path (7) communicates with an inner opening (8) that opens into the dispersion chamber (3). The end communicates with an outer opening (10) that opens to the outside of the dispersion chamber. The number, size, shape and the like of the inner opening (8) and the outer opening (10) can be appropriately set as desired.
上記内方開口(8)の周囲には該内方開口(8)を囲むように遠心分離ディスク(24)を含む媒体分離ローター(9)が設けられている。図に示す実施例においては、上記駆動ディスク(19)の上方に対向状態で遠心分離ディスク(24)で設け、ディスタンスカラー若しくはディスタンスフィン(25)とねじ(26)により固定されているが、上記駆動ディスク(19)から離れて独立的に媒体分離ローターを設けてもよい(図示略)。 Around the inner opening (8), a medium separating rotor (9) including a centrifugal disc (24) is provided so as to surround the inner opening (8). In the embodiment shown in the figure, the centrifugal disk (24) is provided above the drive disk (19) in an opposed state, and is fixed by a distance collar or distance fin (25) and a screw (26). A medium separating rotor may be provided independently from the drive disk (19) (not shown).
上記ディスタンスフィン(25)は、種々に形成することができる。例えば、図6に示すように、遠心分離ディスク(24)の中心線(27)に対して適宜の迎え角を生じるようにフィン(25)を傾斜させて略半径方向に設けたり、迎え角が0度となるように中心線に沿って半径方向に設けたり(図7)、図8に示すようにディスタンスカラー(28)の側方にフィン(29)を設け該ディスタンスカラー(28)を適宜回転させて固定することにより該フィンの迎え角を可変できるようにしてもよい。 The distance fin (25) can be formed in various ways. For example, as shown in FIG. 6, the fin (25) is inclined and provided in a substantially radial direction so that an appropriate angle of attack is generated with respect to the center line (27) of the centrifugal disc (24). It is provided in the radial direction along the center line so as to be 0 degrees (FIG. 7), or as shown in FIG. 8, a fin (29) is provided on the side of the distance collar (28) so that the distance collar (28) is appropriately disposed. You may enable it to vary the angle of attack of the fin by rotating and fixing.
なお、上記遠心分離ディスク(24)と上記上板部(13)の間には、処理材料が滞留しないように、かつ分散媒体をかみ込まないように適宜の幅の空間が形成されている。また、好ましくは、上板部(13)の内面(30)は、上記空間の中央部側が狭く周辺部側がそれより広くなるよう傾斜しているが、上記遠心分離ディスク(24)の表面を傾斜させて上述の如き空間を形成してもよい。 In addition, a space having an appropriate width is formed between the centrifugal disc (24) and the upper plate portion (13) so that the processing material does not stay and does not bite the dispersion medium. Preferably, the inner surface (30) of the upper plate portion (13) is inclined such that the central portion side of the space is narrow and the peripheral portion side is wider, but the surface of the centrifugal disc (24) is inclined. Thus, a space as described above may be formed.
上記外方開口(10)の周囲には、該外方開口(10)を囲むように吐出補助ディスク(31)を含む吐出補助ローター(11)が設けられている。該吐出補助ローター(11)の吐出補助ディスク(31)は、ディスタンスカラー(32)若しくはディスタンスフィンとねじ(33)により固定されているが、上記媒体分離ローター(9)のフィン等と同じように種々のフィン等を設けることができる。 A discharge auxiliary rotor (11) including a discharge auxiliary disk (31) is provided around the outer opening (10) so as to surround the outer opening (10). The discharge auxiliary disk (31) of the discharge auxiliary rotor (11) is fixed by a distance collar (32) or a distance fin and a screw (33), but is the same as the fin of the medium separating rotor (9). Various fins and the like can be provided.
而して、上記媒体分離ローター(9)及び吐出補助ローター(11)の開口面積、直径、周速その他を適宜調整して、比重の小さな処理材料が中心へ向かう上記速度V2よりも、比重の大きな分散媒体が外周へ向かう速度V1が大きくなるように設定すれば、処理材料は、上記吸引口(4)から分散室(3)内に吸引され、分散処理後、駆動軸(6)の吐出路(7)を通ってタンク内に吐出され、分散媒体(17)は媒体分離ローター(9)で分離されて分散室外に流出しないようにすることができる。 Thus, by appropriately adjusting the opening area, diameter, peripheral speed, and the like of the medium separating rotor (9) and the discharge auxiliary rotor (11), the processing material having a small specific gravity is more specific than the speed V2 toward the center. If the large dispersion medium is set so that the velocity V1 toward the outer periphery increases, the processing material is sucked into the dispersion chamber (3) from the suction port (4), and after the dispersion treatment, the discharge of the drive shaft (6) is performed. It is discharged into the tank through the passage (7), and the dispersion medium (17) can be separated by the medium separation rotor (9) so as not to flow out of the dispersion chamber.
1 タンク
2 処理材料
3 分散室
4 吸引口
5 吸引ローター
6 駆動軸
7 吐出路
8 内方開口
9 媒体分離ローター
10 外方開口
11 吐出補助ローター
19 駆動ディスク
21 吸引ディスク
24 遠心分離ディスク
31 吐出補助ディスク
DESCRIPTION OF SYMBOLS 1
Claims (6)
The immersion type according to claim 1, wherein the dispersion chamber has an inner surface adjacent to the medium separation rotor, and the inner surface is inclined so that a distance from the medium separation rotor is narrower at a central portion side and wider at a peripheral portion side. Media distribution device.
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JP2005119200A JP4537881B2 (en) | 2005-04-18 | 2005-04-18 | Immersion medium dispersion device |
Applications Claiming Priority (1)
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JP2005119200A JP4537881B2 (en) | 2005-04-18 | 2005-04-18 | Immersion medium dispersion device |
Publications (2)
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JP2006297208A true JP2006297208A (en) | 2006-11-02 |
JP4537881B2 JP4537881B2 (en) | 2010-09-08 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0361264U (en) * | 1989-10-12 | 1991-06-17 | ||
JP2001046899A (en) * | 1999-08-12 | 2001-02-20 | Taiyo Yuden Co Ltd | Bead mill |
JP2002154923A (en) * | 2000-11-16 | 2002-05-28 | Shiseido Co Ltd | Method for producing emulsified cosmetic containing hydrophobized powder |
JP2004121950A (en) * | 2002-10-01 | 2004-04-22 | Nippon Paint Co Ltd | Immersion type medium dispersing apparatus |
-
2005
- 2005-04-18 JP JP2005119200A patent/JP4537881B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0361264U (en) * | 1989-10-12 | 1991-06-17 | ||
JP2001046899A (en) * | 1999-08-12 | 2001-02-20 | Taiyo Yuden Co Ltd | Bead mill |
JP2002154923A (en) * | 2000-11-16 | 2002-05-28 | Shiseido Co Ltd | Method for producing emulsified cosmetic containing hydrophobized powder |
JP2004121950A (en) * | 2002-10-01 | 2004-04-22 | Nippon Paint Co Ltd | Immersion type medium dispersing apparatus |
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JP4537881B2 (en) | 2010-09-08 |
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