JPH105560A - Sand mill for dispersing pigment - Google Patents

Sand mill for dispersing pigment

Info

Publication number
JPH105560A
JPH105560A JP8179833A JP17983396A JPH105560A JP H105560 A JPH105560 A JP H105560A JP 8179833 A JP8179833 A JP 8179833A JP 17983396 A JP17983396 A JP 17983396A JP H105560 A JPH105560 A JP H105560A
Authority
JP
Japan
Prior art keywords
paste
dispersed
media
rotor
pigment
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
JP8179833A
Other languages
Japanese (ja)
Other versions
JP3739138B2 (en
Inventor
Mutsuo Kuramoto
睦雄 庫本
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.)
Kansai Paint Co Ltd
Original Assignee
Kansai Paint Co 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 Kansai Paint Co Ltd filed Critical Kansai Paint Co Ltd
Priority to JP17983396A priority Critical patent/JP3739138B2/en
Publication of JPH105560A publication Critical patent/JPH105560A/en
Application granted granted Critical
Publication of JP3739138B2 publication Critical patent/JP3739138B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To uniformly disperse a pigment formulated in a pigment dispersed paste by providing a screen structure for separating a media from the dispersed paste in which the pigment is dispersed to enable to disperse even a high viscosity dispersed paste by a sand mill without unevenly dispersing the media. SOLUTION: The dispersed paste fed from a paste inlet 9 is dispersed by a pin 3 during flowing on the outer peripheral part of the rotor 1 from right to left with the media. The mixture of the disposed paste with the media which reaches the left side of the rotor 1 moves inside of the rotor 1 from left to right by a screw 5 and is compressed to become relatively high pressure. And the media is separated from the dispersed paste in which the pigment is dispersed by a screw 6. The dispersed paste separated by the screw 6 is fed to a receiving tank from a paste outlet 10. The residual dispersed paste and the media are passed through a circulating hole 2, flow-out to the shoulder part of the rotor 1 and is passed through the outside of the rotor 1 again to be circulated.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、高粘度分散ペース
トに配合されている顔料を分散せしめる、すなわち二次
粒子からなる顔料の凝集体を一次粒子に分散せしめるた
めのサンドミルに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sand mill for dispersing a pigment contained in a high-viscosity dispersion paste, that is, for dispersing an aggregate of secondary particles into primary particles.

【0002】[0002]

【従来技術及びその課題】環境問題が深刻になり、塗料
等から揮発する有機溶剤に対する規制が厳しくなる情勢
にある。そこで、塗料中に配合される有機溶剤量を減ら
すため塗料のハイソリッド化及び水溶化が進められてい
る。これに伴い、塗料製造工程の最も重要な工程である
顔料分散工程において、分散ペーストの粘度が高粘度と
なり、従来のサンドミルでは分散できない場合がしばし
ばある。
2. Description of the Related Art There is a situation in which environmental problems have become serious and regulations on organic solvents volatilized from paints and the like have become strict. Therefore, in order to reduce the amount of the organic solvent to be mixed in the coating material, the coating material is being made to be high-solid and water-soluble. Along with this, in the pigment dispersion step, which is the most important step in the paint production step, the viscosity of the dispersion paste becomes high, and it is often impossible to disperse with a conventional sand mill.

【0003】サンドミルにおける分散ペーストの流動に
よるメジアの偏在を防ぐため、従来は、ロータの回転に
より生ずる遠心力を利用している。しかしながら、高粘
度の分散ペーストをサンドミルで分散する場合は、過大
な動力負荷及び発熱を防ぐためロータの回転数を落とさ
ざるを得ず、遠心力を利用したメジアの循環機構は有効
に機能しない。従って、メジアが偏在し過大な動力負荷
及び発熱の原因となる。さらに、メジアの偏在によるロ
ータあるいはベセルの摩耗が発生することがある。メジ
アの偏在を防ごうとすれば、処理量を極端に落とさざる
を得ないのが現状である。
Conventionally, centrifugal force generated by rotation of a rotor is used to prevent uneven distribution of the media due to the flow of the dispersion paste in a sand mill. However, when a high-viscosity dispersion paste is dispersed by a sand mill, the rotation speed of the rotor must be reduced in order to prevent excessive power load and heat generation, and the media circulation mechanism using centrifugal force does not function effectively. Therefore, the media is unevenly distributed and causes excessive power load and heat generation. Further, the rotor or the vessel may be worn due to uneven distribution of the media. At present, the processing amount must be drastically reduced in order to prevent uneven distribution of the media.

【0004】従来のサンドミルでは、分散ペーストの粘
度は10Pa.s以下であり、それ以上の粘度の分散ペ
ーストを分散しようとすると、上記のような問題点が生
ずる。
[0004] In a conventional sand mill, the viscosity of the dispersion paste is 10 Pa · s or less, and when the dispersion paste having a viscosity higher than this is to be dispersed, the above-described problems occur.

【0005】[0005]

【課題を解決するための手段】本発明においては、上記
のとおりの課題を解決するために、ベセルと、該ベセル
内に顔料分散されるペーストを供給するためのペースト
入口と、該ベセル内に配置され、該ベセルに固定され
た、中心軸線に対して傾斜している傾斜板を周囲に有す
るステータと、該ベセル内に配置され、該ステータの中
心軸を回転軸として回転可能に配置された、該ステータ
を取り囲んでいる略円筒形ロータと、該ベセル内に充填
されたメジアと、該ベセル内から顔料分散された分散ペ
ーストを排出するためのペースト出口と、該ペースト出
口に配置された、該メジアを顔料分散された分散ペース
トから分離するスクリーン機構とを具備することを特徴
とする、高粘度分散ペーストに配合されている顔料を分
散せしめるためのサンドミルが提供される。
In the present invention, in order to solve the above-mentioned problems, a vessel, a paste inlet for supplying a paste in which a pigment is dispersed in the vessel, and a paste inlet in the vessel. A stator, which is arranged and fixed to the vessel and has an inclined plate which is inclined with respect to the central axis, is arranged around the periphery of the stator, and is arranged in the vessel and rotatably arranged around the central axis of the stator as a rotation axis. A substantially cylindrical rotor surrounding the stator, a media filled in the vessel, a paste outlet for discharging a pigment-dispersed dispersion paste from within the vessel, and a paste outlet. A screen mechanism for separating the media from the pigment-dispersed dispersion paste; and a screen for dispersing the pigment compounded in the high-viscosity dispersion paste. Mills is provided.

【0006】本発明の装置によると、ロータが略円筒状
にされており、その内側に傾斜板を備えたステータが挿
入されており、ロータの回転により軸方向の流れを生じ
させ、その流れにより円筒状ロータの内側と外側との間
でメジアを循環させる。
According to the apparatus of the present invention, the rotor is formed in a substantially cylindrical shape, and the stator provided with the inclined plate is inserted inside the rotor, and the rotation of the rotor causes the axial flow to occur. The media is circulated between the inside and outside of the cylindrical rotor.

【0007】ステータに設けられる傾斜板は、同一方向
に傾斜した複数枚の部材から構成することができ、ある
いは、連続的に延びている1枚の部材で構成されたスク
リユーとして構成することもできる。
The inclined plate provided on the stator can be constituted by a plurality of members inclined in the same direction, or can be constituted by a screw constituted by a single member extending continuously. .

【0008】[0008]

【発明の実施の形態】図1に示したとおり、本発明の好
ましい態様に従う装置は、ベセル11と、ベセル11内
に顔料分散される分散ペーストを供給するためのペース
ト入口9と、ベセル内に配置され、ベセルに固定され
た、中心軸線に対して傾斜している傾斜板を周囲に有す
るステータ13と、ベセル内に配置され、ステータ13
の中心軸を回転軸として回転可能に配置された、ステー
タ13を取り囲んでいる略円筒形ロータ1と、ベセル内
に充填された多数の粒状体の分散媒体であるメジアと、
ベセル内から顔料分散された分散ペーストを排出するた
めのペースト出口10と、ペースト出口に配置された、
該メジアを該顔料分散された分散ペーストから分離する
スクリーン機構6とを具備する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an apparatus according to a preferred embodiment of the present invention comprises a vessel 11, a paste inlet 9 for supplying a dispersion paste in which pigment is dispersed in the vessel 11, and a vessel inlet 9. A stator 13 disposed around and fixed to the vessel and having an inclined plate inclined around a central axis, and a stator 13 arranged in the vessel and
A substantially cylindrical rotor 1 surrounding the stator 13 and rotatably disposed about the central axis of the rotor as a rotation axis, and a media as a dispersion medium of a large number of granular materials filled in the vessel.
A paste outlet 10 for discharging the dispersed paste in which the pigment is dispersed from inside the vessel, and a paste outlet,
A screen mechanism 6 for separating the media from the pigment-dispersed dispersion paste.

【0009】ロータ1は、ロータジャケット4を備えて
おり、ロータシヤフト7を介して外部から回転力が加え
られる。ロータシヤフト7は、メカシール8を介して延
びており、これによって、ベセル11の外部と内部との
密封性が維持される。
The rotor 1 has a rotor jacket 4 to which a rotational force is applied from the outside via a rotor shaft 7. The rotor shaft 7 extends through the mechanical seal 8, so that the hermetic seal between the outside and the inside of the vessel 11 is maintained.

【0010】略円筒状のロータ1の内側に配置されたス
テータ13には、傾斜板を構成するスクリュー5とスク
リーン6が図のように設置されている。ベセルジヤケッ
ト12を備えたベセル11内部空間の例えば80〜90
%を占めるように、粒子状の分散媒体であるメジアが充
填されている。ロータ1の肩部にはメジア循環用の複数
の循環孔2が設けられている。ロータの外周には、メジ
アの運動を促進し分散効率を高めるために略円筒状の複
数のピン3が設けられている。
A screw 5 and a screen 6, which constitute an inclined plate, are installed on a stator 13 disposed inside the substantially cylindrical rotor 1 as shown in the figure. For example, 80 to 90 of the internal space of the vessel 11 provided with the vessel 12
% Of the media, which is a particulate dispersion medium. A plurality of circulation holes 2 for media circulation are provided at the shoulder of the rotor 1. A plurality of substantially cylindrical pins 3 are provided on the outer periphery of the rotor to promote the movement of the media and increase the dispersion efficiency.

【0011】ペースト入口9から、ベセル11内部に、
顔料分散される分散ペースト(二次粒子の顔料とビヒク
ルの混合物)トを投入し、ロータ1を回転すると、ロー
タ1の回転とスクリュー5の存在とによってに生ずる軸
方向の流れにより、ロータ1の内部、循環孔2、ロータ
1の外部、そしてロータ1の内部に戻る循環する流れが
発生する。
From the paste inlet 9, into the vessel 11,
A dispersion paste (mixture of a secondary particle pigment and a vehicle) into which the pigment is dispersed is charged, and when the rotor 1 is rotated, an axial flow generated by the rotation of the rotor 1 and the presence of the screw 5 causes the rotor 1 to rotate. A circulating flow is generated which returns to the inside, the circulation hole 2, the outside of the rotor 1 and the inside of the rotor 1.

【0012】ペースト入口9から送りこまれた分散ペー
ストは、メジアと共にロータ外周部を図面の右から左に
流れ、その間にピン3により分散作用を受ける。ロータ
1の左側に達した分散ペーストとメジアの混合物は、ス
クリュー5によりロータ1の内側を左から右へ流動す
る。ロータ1の右端は閉じられており、循環孔2が設け
られているのみであるので、ロータ1の右端において、
混合物は圧縮され、比較的高圧になる。そして、スクリ
ーン6によって、メジアと顔料分散された分散ペースト
とが分離される。スクリーン6で分離された顔料分散さ
れた分散ペーストはペースト出口10から受けタンク
(図示ぜず)に送られる。残りの分散ペーストとメジア
とは、循環孔2を通ってロータ1の肩部に出て、再びロ
ータの外側を通り循環する。この態様では、ペースト出
口10は、ステータ13に設けられているが、ペースト
出口を別の場所に設けることもできる。この場合にも、
ベースト出口付近が高圧になるように構成することが好
ましい。
The dispersion paste sent from the paste inlet 9 flows from the right to the left in the drawing along with the media along the outer periphery of the rotor, and is subjected to a dispersion action by the pins 3 during that. The mixture of the dispersion paste and the media that has reached the left side of the rotor 1 flows inside the rotor 1 from left to right by the screw 5. The right end of the rotor 1 is closed, and only the circulation hole 2 is provided.
The mixture is compressed to a relatively high pressure. Then, the screen 6 separates the media and the dispersed paste in which the pigment is dispersed. The dispersed paste in which the pigment is separated by the screen 6 is sent from a paste outlet 10 to a receiving tank (not shown). The remaining disperse paste and the media are passed through the circulation holes 2 to the shoulder of the rotor 1 and circulated again outside the rotor. In this embodiment, the paste outlet 10 is provided in the stator 13, but the paste outlet may be provided in another place. Again, in this case,
It is preferable that the pressure is high near the base outlet.

【0013】このように、サンドミル内に於いては顔料
分散される分散ペーストとメジアとが一緒になって流動
するため、高粘度の分散ペーストでも、分散ペーストの
流動によるメジアの偏在が発生せず、効率良く顔料分散
せしめることができる。
As described above, in a sand mill, the dispersion paste in which the pigment is dispersed and the media are fluidized together, so that even with a high-viscosity dispersion paste, uneven distribution of the media due to the flow of the dispersion paste does not occur. The pigment can be efficiently dispersed.

【0014】[0014]

【実施例】図1に示したとおりの構造を有するサンドミ
ルであって、空間容量が2リットルであり、モーター容
量が7.5Kwであり、ロータ周速度が3m/sであ
り、メジアとして、φ1mmガラスビーズを用い、メジ
アを、内部空間の85%充填した。
DESCRIPTION OF THE PREFERRED EMBODIMENTS A sand mill having a structure as shown in FIG. 1 has a space capacity of 2 liters, a motor capacity of 7.5 Kw, a rotor peripheral speed of 3 m / s, and a media of φ1 mm. The media was filled with 85% of the internal space using glass beads.

【0015】分散ペースト配合は、エポキシ樹脂35
部、タルク20部、シリカ20部、溶剤25部であっ
た。そして、処理流量は、15リットル/Hr、分散温
度45℃、分散度15μ(ファイネスゲージ)であっ
た。
The dispersion paste is compounded with an epoxy resin 35
Parts, talc 20 parts, silica 20 parts and solvent 25 parts. The processing flow rate was 15 liters / Hr, the dispersion temperature was 45 ° C., and the degree of dispersion was 15 μ (fineness gauge).

【0016】上記のとおり、空間容量2リットルのサン
ドミルで、粘度150Pa.s(at25℃)の分散ペ
ーストを、毎時15リットルの処理量で分散することが
できた。上記のとおりに処理された混合物は、顔料が分
散ペースト内に十分均一に分散せしめられていた。
As described above, the dispersion paste having a viscosity of 150 Pa.s (at 25 ° C.) could be dispersed at a processing rate of 15 liters / hour by a sand mill having a space capacity of 2 liters. In the mixture treated as described above, the pigment was sufficiently uniformly dispersed in the dispersion paste.

【0017】[0017]

【発明の効果】本発明の装置によると、例えば、粘度1
50Pa.sの高粘度分散ペーストも、メジアを偏在さ
せることなくサンドミル分散が可能となり、顔料分散ペ
ーストに配合されている顔料を十分均一に分散せしめる
ことができる。
According to the apparatus of the present invention, for example,
Even a high-viscosity dispersion paste of 50 Pa.s can be sand-mill-dispersed without uneven distribution of the media, and the pigments contained in the pigment dispersion paste can be sufficiently uniformly dispersed.

【0018】本発明の装置によると、高粘度の分散ペー
ストをサンドミルで分散するために、ロータの回転数が
低くてもメジアが確実に循環し偏在させない。
According to the apparatus of the present invention, since the high-viscosity dispersion paste is dispersed by the sand mill, the media is reliably circulated and not unevenly distributed even when the rotation speed of the rotor is low.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施例に従う、顔料を均一に分散せ
しめるためサンドミルの部分断面図。
FIG. 1 is a partial cross-sectional view of a sand mill for uniformly dispersing a pigment according to an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 ロータ 6 スクリーン機構 9 ペースト入口 10 ペースト出口 11 ベセル 13 ステータ DESCRIPTION OF SYMBOLS 1 Rotor 6 Screen mechanism 9 Paste inlet 10 Paste outlet 11 Bethel 13 Stator

フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 B02C 19/22 B02C 19/22 Continuation of the front page (51) Int.Cl. 6 Identification number Agency reference number FI Technical display location B02C 19/22 B02C 19/22

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 ベセルと、 該ベセル内に顔料分散されるペーストを供給するための
ペースト入口と、 該ベセル内に配置され、該ベセルに固定された、中心軸
線に対して傾斜している傾斜板を周囲に有するステータ
と、 該ベセル内に配置され、該ステータの中心軸を回転軸と
して回転可能に配置された、該ステータを取り囲んでい
る略円筒形ロータと、 該ベセル内に充填されたメジアと、 該ベセル内から顔料分散された分散ペーストを排出する
ためのペースト出口と、 該ペースト出口に配置された、該メジアを顔料分散され
た分散ペーストから分離するスクリーン機構とを具備す
ることを特徴とする、高粘度分散ペーストに配合されて
いる顔料を分散せしめるためのサンドミル。
1. A vessel, a paste inlet for supplying a paste in which the pigment is dispersed in the vessel, and a slope disposed in the vessel, fixed to the vessel, and inclined with respect to a central axis. A stator having a plate around the periphery, a substantially cylindrical rotor surrounding the stator, disposed in the vessel and rotatably disposed around a center axis of the stator, and filled in the vessel. A media outlet; a paste outlet for discharging a pigment-dispersed dispersion paste from the inside of the vessel; and a screen mechanism disposed at the paste outlet, for separating the media from the pigment-dispersed dispersion paste. A sand mill for dispersing pigments, which are characteristic of high viscosity dispersion paste.
JP17983396A 1996-06-21 1996-06-21 Sand mill for dispersing pigments Expired - Lifetime JP3739138B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17983396A JP3739138B2 (en) 1996-06-21 1996-06-21 Sand mill for dispersing pigments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17983396A JP3739138B2 (en) 1996-06-21 1996-06-21 Sand mill for dispersing pigments

Publications (2)

Publication Number Publication Date
JPH105560A true JPH105560A (en) 1998-01-13
JP3739138B2 JP3739138B2 (en) 2006-01-25

Family

ID=16072701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17983396A Expired - Lifetime JP3739138B2 (en) 1996-06-21 1996-06-21 Sand mill for dispersing pigments

Country Status (1)

Country Link
JP (1) JP3739138B2 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000354780A (en) * 1999-06-14 2000-12-26 Toshihiro Ishii Medium agitation type pulverizer and its washer and its washing method
JP2003001082A (en) * 2001-06-20 2003-01-07 Kansai Paint Co Ltd Bead mill
JP2004276015A (en) * 2003-02-28 2004-10-07 Dainippon Ink & Chem Inc Disintegrating apparatus and disintegrating method for metal powder
CN103480462A (en) * 2013-01-10 2014-01-01 上海法孚莱能源技术有限公司 Basket mill
CN108479963A (en) * 2018-05-11 2018-09-04 天津巴莫科技股份有限公司 A kind of grading discharge sand mill
CN109365066A (en) * 2017-11-18 2019-02-22 深圳市叁星飞荣机械有限公司 A kind of vertical media Ball-stirring mill with multi-stage separation and grading function
JP2019081168A (en) * 2017-10-27 2019-05-30 淺田鉄工株式会社 Twin spindle type dispersion machine
JP2020179361A (en) * 2019-04-26 2020-11-05 淺田鉄工株式会社 Two axis disperser
CN112191176A (en) * 2020-09-27 2021-01-08 赣州博立科技有限公司 Tungsten powder's dispersion agitator tank
JP2022521539A (en) * 2019-12-25 2022-04-08 重慶徳庄農産品開発有限公司 Raw material mixer
WO2022244781A1 (en) * 2021-05-17 2022-11-24 関西ペイント株式会社 Method for manufacturing conductive pigment paste

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000354780A (en) * 1999-06-14 2000-12-26 Toshihiro Ishii Medium agitation type pulverizer and its washer and its washing method
JP2003001082A (en) * 2001-06-20 2003-01-07 Kansai Paint Co Ltd Bead mill
JP2004276015A (en) * 2003-02-28 2004-10-07 Dainippon Ink & Chem Inc Disintegrating apparatus and disintegrating method for metal powder
CN103480462A (en) * 2013-01-10 2014-01-01 上海法孚莱能源技术有限公司 Basket mill
JP2019081168A (en) * 2017-10-27 2019-05-30 淺田鉄工株式会社 Twin spindle type dispersion machine
CN109365066A (en) * 2017-11-18 2019-02-22 深圳市叁星飞荣机械有限公司 A kind of vertical media Ball-stirring mill with multi-stage separation and grading function
CN109365066B (en) * 2017-11-18 2020-10-09 深圳市叁星飞荣机械有限公司 Vertical medium stirring mill with multi-stage separation and classification functions
CN108479963A (en) * 2018-05-11 2018-09-04 天津巴莫科技股份有限公司 A kind of grading discharge sand mill
CN108479963B (en) * 2018-05-11 2024-01-02 天津巴莫科技有限责任公司 Graded discharging sand mill
JP2020179361A (en) * 2019-04-26 2020-11-05 淺田鉄工株式会社 Two axis disperser
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