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EP0587185B1 - Kontinuierliche Dispergiervorrichtung - Google Patents

Kontinuierliche Dispergiervorrichtung Download PDF

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Publication number
EP0587185B1
EP0587185B1 EP93114601A EP93114601A EP0587185B1 EP 0587185 B1 EP0587185 B1 EP 0587185B1 EP 93114601 A EP93114601 A EP 93114601A EP 93114601 A EP93114601 A EP 93114601A EP 0587185 B1 EP0587185 B1 EP 0587185B1
Authority
EP
European Patent Office
Prior art keywords
vessel
dispersing apparatus
chambers
rotating shaft
partition
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.)
Expired - Lifetime
Application number
EP93114601A
Other languages
English (en)
French (fr)
Other versions
EP0587185A2 (de
EP0587185A3 (en
Inventor
Yasuhiko C/O Toyo Ink Manufacturing Co.Ltd Murase
Naoji C/O Toyo Ink Manufacturing Co.Ltd Mizoguchi
Fumio C/O Toyo Ink Manufacturing Co. Ltd. Yoshida
Kouichi C/O Toyo Ink Manufacturing Co. Ltd. Kanai
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.)
Artience Co Ltd
Original Assignee
Toyo Ink Mfg 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 Toyo Ink Mfg Co Ltd filed Critical Toyo Ink Mfg Co Ltd
Publication of EP0587185A2 publication Critical patent/EP0587185A2/de
Publication of EP0587185A3 publication Critical patent/EP0587185A3/en
Application granted granted Critical
Publication of EP0587185B1 publication Critical patent/EP0587185B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/25—Mixers with loose mixing elements, e.g. loose balls in a receptacle
    • B01F33/251—Mixers with loose mixing elements, e.g. loose balls in a receptacle using balls as loose mixing element

Definitions

  • the invention relates to a continuous dispersing apparatus in which stirring vanes in a vessel disperse pulverizing media.
  • a mill base which is formed by dispersing a powdered pigment in a varnish, a solvent or the like at a high concentration.
  • a powdered pigment composed of secondary particles formed by agglutinating primary particles of the pigment is pulverized and dispersed in a varnish to produce fine particles not containing coarse particles. Such process is employed to improve the tinting strength of the printing ink and the paint.
  • Dispersing apparatuses such as a sand mill, a grain mill, a ball mill and the like are known.
  • Dispersing apparatuses capable of preparing printing ink, etc. continuously are designed to continuously supply a mill base material from a material supply inlet that communicates with a vessel, a dispersing process is performed in the vessel, and thereafter the dispersed mill base is discharged continuously from a discharge outlet.
  • the supplied mill base material is not dispersed uniformly in the vessel, so-called "short-pass" occurs whereby mill base containing coarse pigment particles is discharged from the discharge outlet.
  • the problem of short pass can be prevented to a certain degree by increasing the rate of loading of pulverizing media.
  • too high a rate of loading of the media induces choking, which results in an uneven distribution of the media on the discharge outlet side, thereby leading to unstable operation of the apparatus.
  • the apparatus is operated at a rate of loading of the pulverizing media of about 75 to 80%.
  • a continuous milling and dispersing machine having a cylindrical vessel which is segmented into chambers by means of partition walls.
  • the chambers are filled with a pulverizing media for pulverizing and dispersing two metal components.
  • a rotating shaft is provided having stirring means. When the rotating shaft is rotated the material components are dispersed and pulverized by the agitation of the stirring means.
  • the different chambers of the dispersing machine are filled with pulverizing materials of different grain size, whereby the grain size at the outlet side is finer than the one at the inlet side.
  • the partition walls have a network structure with openings which are small enough to prevent the pulverizing media from passing therethrough. Only the dispersed material is able to pass the partition walls.
  • an object of the invention is to provide an economically advantageous continuous dispersing apparatus with high pulverizing and dispersing efficiency.
  • the invention is applied to a continuous dispersing apparatus that comprises a vessel for containing pulverizing media; a supply inlet and a discharge outlet formed at respective ends of the vessel, a rotating disc mounted on a rotating shaft passing through the vessel, a partition defining a gap which prevents the passage of the pulverizing media while passing dispersed material, wherein the partition divides the vessel into a plurality of chambers, each chamber having at least one stirring means mounted on the rotating shaft.
  • a continuous dispersing apparatus of the invention has a vessel 10 and a rotating shaft 15 that passes through the vessel 10 via at least one end surface of the vessel 10. While a cylindrical-shaped vessel 10 is shown in the drawings, the section of the vessel may be rectangular, hexagonal, octagonal, or conical. While the capacity of the vessel depends on the amount of pulverizing media 20, a capacity of 0.5 liters or more may practically be usable.
  • Stirring vanes 16 formed by a plurality of coaxially mounted pins are mounted on the rotating shaft 15. While the pin may be circular in section, it may also take other sectional forms such as a rectangular, hexagonal, or octagonal.
  • the stirring vane 16 may be formed of a pair of pins mounted in symmetrical form, or four to eight pins may be mounted coaxially in symmetrical form.
  • the stirring vane 15 may also be a flat disc or conical disc having holes such as to allow the pulverizing media 20 to pass therethrough.
  • the distance between the top of the stirring vane 16 and the inner surface of the vessel 10 is preferably at least three times the diameter of the pulverizing media.
  • the inside of the rotating shaft 15 is a cooling water path 15a so that cooling water can circulate therethrough.
  • the rotating shaft is rotated by a rotational power source (not shown) at a peripheral speed of 8 to 12 m/sec.
  • the outside of the vessel 10 is a cooling water flow path 17.
  • the pulverizing media 20 are made of spherical, flat, or amorphous steel, ceramic, stone, or the like.
  • a spherical medium may have an average grain size of 0.3 to 3 mm.
  • the rate of loading of the pulverizing media 20 is from 70 to 95 %, or preferably from 85 to 90 %.
  • a partition 13 includes a rotating disc 13a mounted on the rotating shaft 15, and a ring-like plate 13b fixed to the inner wall of the vessel 10.
  • a slit-like gap 14 is formed between the disc 13a and the plate 13b.
  • the width of the slit does not allow the pulverizing media to pass therethrough, but allows the dispersed material 20 to pass therethrough. If the average size of a spherical pulverizing medium 20 is 1.5 mm, the width of the slit is set to about 0.3 to 0.4 mm.
  • the vessel 10 is divided into a first chamber l0a and a second chamber lOb by the partition 13. While two chambers are formed by the partition 13 as shown in Fig. 1, the number of chambers may be larger than two. It is preferable to arrange two to six stirring vanes along the length of the rotating shaft 15 in each chamber.
  • the gap 14 may be slit-like, or may be in the form of a plurality of small holes.
  • the gap 14 is formed close to the inner wall of the vessel 10. The reason for this is as follows.
  • the rotating vanes 16 rotate, the pulverizing media 20 are distributed in the vicinity of the inner wall of the vessel 10 by centrifugal force. Therefore, while the material to be dispersed which is near the vessel 10 is distributed by the pulverizing media 20 efficiently, the material to be dispersed which is near the rotating shaft 15 is dispersed poorly. Thus, the material that has been dispersed satisfactorily must be transferred to the next chamber efficiently.
  • the partition 13 includes the disc 13a releasably fixed to the rotating shaft 15 and the ring-like plate 13b fixed to the inner wall of the vessel.
  • the radius of the disc 13a is larger than the radius of gyration of the stirring vane 16 so that a dispersing apparatus can be obtained which is easy to disassemble and maintain.
  • a material supply inlet 11 for supplying the material to be dispersed is formed at one end of the vessel 10, when the material comprises a powder pigment and a varnish or a solvent or the like, so that the material can be supplied continuously from the material supply inlet 11.
  • the material dispersed in the chambers l0a and lOb of the vessel 10 is designed to be discharged continuously from a discharge outlet 12 through a slit 19 of a partition 18 that is of the same design as the partition 13.
  • Pulverizing media of varying grain sizes may be loaded into the respective chambers in the dispersing apparatus of the invention. That is, pulverizing media having a relatively large grain size may be loaded in the first chamber, and pulverizing media having a smaller grain size loaded in the next chamber. Such an arrangement contributes to efficient dispersing.
  • the conventional dispersing apparatus is designed so that its vessel is formed of a single chamber, the pulverizing media are subjected to density distribution by the centrifugal force of the rotating vanes so as to cause the material dispersed by the pulverizing media of small density to be discharged from the discharge outlet as insufficiently dispersed.
  • the vessel is divided into two or more chambers. Therefore, the material to be dispersed undergoes a pulverizing and dispersing process in the first chamber, and only the dispersed material is allowed to pass through the partition thereafter so that the transfer distance of the dispersed material is long, is pulverized and dispersed sufficiently.
  • the conventional continuous dispersing apparatus supplies the material to be dispersed continuously, a stream of the dispersed material is produced within the vessel, thereby tending to distribute the pulverizing media locally on the discharge outlet side by the transfer force.
  • the invention which is characterized by dividing the vessel by the partition, such a disadvantage is reduced.
  • the conventional upper limit of the rate of loading of the pulverizing media which is about 85 %, can be improved to about 90 % or more by the dispersing apparatus of the invention.
  • the invention can improve the productivity of producing a printing ink mill basis by about 50% over the productivity of the conventional dispersing apparatus of the same capacity.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Crushing And Grinding (AREA)

Claims (7)

  1. Vorrichtung zum kontinuierlichen Dispergieren mit:
    Einem Behälter (10), der Pulverisiermedien (20) enthält,
    einem Zufuhreinlaß (11) und einem Austragauslaß (12), die an jeweiligen Enden des Behälters (10) gebildet sind,
    einer Drehwelle (15), die den Behälter (10) durchsetzt, der eine Innenwand aufweist,
    einer Trennwand oder Trennwänden (13), die den Behälter (10) in mehrere Kammern (10a, 10b) unterteilt bzw. unterteilen, wobei die Trennwand (13) einen Spalt (14) festlegt, der den Durchtritt der Pulverisiermedien (20) zwischen den Kammern verhindert, während dispergiertes Material durch ihn hindurchtreten kann, und
    wenigstens einem Rührmittel (16), das an der Drehwelle (15) in jeder der Kammern (10a, 10b) angebracht ist,
    dadurch gekennzeichnet, daß
    der Spalt nahe zur Wand des Behälters angeordnet ist.
  2. Vorrichtung zum kontinuierlichen Dispergieren nach Anspruch 1, wobei die Trennwand (13) eine Drehscheibe (13a) aufweist, die an der Drehwelle (15) angebracht ist, und eine ringartige Platte (13b), die an einer Innenwand des Behälters (10) befestigt ist, wobei der Spalt (14) zwischen der Drehscheibe (13a) und der ringartigen Platte (13b) gebildet ist.
  3. Vorrichtung zum kontinuierlichen Dispergieren nach Anspruch 2, wobei der Spalt (14) ein schlitzartiger Spalt ist.
  4. Vorrichtung zum kontinuierlichen Dispergieren nach Anspruch 1, wobei die Trennwand (13) zwischen dem Austragauslaß (12) und einer von mehreren Kammern (10a, 10b) benachbart zum Austragauslaß (12) gebildet ist.
  5. Vorrichtung zum kontinuierlichen Dispergieren nach Anspruch 2, wobei die Scheibe (13a) an der Drehwelle (15) abnehmbar befestigt ist, und der Radius der Scheibe (13a) größer als die Länge des Rührmittels (16) ist.
  6. Vorrichtung zum kontinuierlichen Dispergieren nach Anspruch 1, wobei der Abstand zwischen der Oberseite des Rührmittels und einer Innenseite des Behälters (10) wenigstens dem Dreifachen des Durchmessers der Pulverisiermedien (20) entspricht.
  7. Vorrichtung zum kontinuierlichen Dispergieren nach Anspruch 1, wobei zwei bis sechs Rührmittel (16) in jeder der Kammern (10a, 10b) angeordnet sind.
EP93114601A 1992-09-11 1993-09-10 Kontinuierliche Dispergiervorrichtung Expired - Lifetime EP0587185B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP26940192 1992-09-11
JP269401/92 1992-09-11
JP5058829A JPH06134271A (ja) 1992-09-11 1993-03-18 連続式分散装置
JP58829/93 1993-03-18

Publications (3)

Publication Number Publication Date
EP0587185A2 EP0587185A2 (de) 1994-03-16
EP0587185A3 EP0587185A3 (en) 1994-09-28
EP0587185B1 true EP0587185B1 (de) 1997-07-02

Family

ID=26399838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114601A Expired - Lifetime EP0587185B1 (de) 1992-09-11 1993-09-10 Kontinuierliche Dispergiervorrichtung

Country Status (3)

Country Link
EP (1) EP0587185B1 (de)
JP (1) JPH06134271A (de)
DE (1) DE69311862T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2634870A (en) * 2023-10-12 2025-04-30 Wortley Anthony A nanobubble generator and a method of generating nanobubbles

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69621352T2 (de) * 1996-11-22 2003-03-06 Toyo Ink Mfg. Co., Ltd. Dispergiervorrichtung
JP2002204969A (ja) * 2001-01-10 2002-07-23 Inoue Seisakusho:Kk パイプラインビ−ズミル
JP2007229578A (ja) * 2006-02-28 2007-09-13 Toray Ind Inc ペースト分散装置およびペーストの製造方法
KR100921190B1 (ko) * 2009-02-25 2009-10-13 베스트화학기계공업(주) 그라인딩 효율성을 개선한 탑 밀
CN106310989A (zh) * 2016-11-18 2017-01-11 安陆鲸鱼嘴电子科技有限公司 一种便于乳膏剂出料的乳化设备
CN107755018A (zh) * 2017-11-23 2018-03-06 恩平市弘彩数码科技有限公司 一种纳米研磨机缝隙分离器
CN108176306A (zh) * 2018-01-05 2018-06-19 刘楚楚 一种油漆密闭搅拌设备
CN112024058B (zh) * 2020-09-16 2024-07-19 郴州市东卓矿山设备有限公司 干式磨机
CN112535976A (zh) * 2020-11-17 2021-03-23 湖南省方圆磨料磨具有限公司 一种制造砂轮用的混料设备
CN112755843A (zh) * 2020-12-24 2021-05-07 广东赛安特新材料有限公司 一种搅拌乳化设备
KR102663295B1 (ko) * 2021-09-27 2024-05-29 주식회사 이앤에이치 입자 이동 부재를 포함하는 나노 버블 발생기

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Publication number Priority date Publication date Assignee Title
US3149789A (en) * 1960-10-28 1964-09-22 Szegvari Andrew Continuous process of grinding particulate material
US3698647A (en) * 1970-12-08 1972-10-17 Ferrox Iron Ltd Process for grinding particulate solids
US4106116A (en) * 1977-01-07 1978-08-08 Mackay Malcolm H Dispersing apparatus
JPS5946663B2 (ja) * 1982-03-08 1984-11-14 大日本塗料株式会社 練合分散機
JPS5946664B2 (ja) * 1982-03-24 1984-11-14 大日本塗料株式会社 練合分散機
AU1097583A (en) * 1983-02-03 1984-08-09 Union Process International Inc. Comminuting mill
DE3431553A1 (de) * 1984-08-28 1986-03-13 Draiswerke Gmbh, 6800 Mannheim Ruehrwerksmuehle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2634870A (en) * 2023-10-12 2025-04-30 Wortley Anthony A nanobubble generator and a method of generating nanobubbles

Also Published As

Publication number Publication date
EP0587185A2 (de) 1994-03-16
DE69311862T2 (de) 1998-01-02
JPH06134271A (ja) 1994-05-17
EP0587185A3 (en) 1994-09-28
DE69311862D1 (de) 1997-08-07

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