WO2010071254A1 - Broyeur a billes - Google Patents

Broyeur a billes Download PDF

Info

Publication number
WO2010071254A1
WO2010071254A1 PCT/KR2008/007870 KR2008007870W WO2010071254A1 WO 2010071254 A1 WO2010071254 A1 WO 2010071254A1 KR 2008007870 W KR2008007870 W KR 2008007870W WO 2010071254 A1 WO2010071254 A1 WO 2010071254A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupled
casing
ball mill
upper member
stirred ball
Prior art date
Application number
PCT/KR2008/007870
Other languages
English (en)
Inventor
Hyun Ho Chun
Young Hyun Nam
Tae Youn Kim
Original Assignee
Je Powder 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 Je Powder Co., Ltd. filed Critical Je Powder Co., Ltd.
Publication of WO2010071254A1 publication Critical patent/WO2010071254A1/fr

Links

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
    • B02C17/161—Arrangements for separating milling media and ground material
    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/93—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with rotary discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures

Definitions

  • the present invention relates to a stirred ball mill, and more particularly, to a stirred ball mill that is used for stirring and milling of a material by using beads.
  • nano powder exceeding micropowder is used
  • the technical fields in which nano powder is used such as nanorization of dyes, pigments or paints for realizing various colors, production of high-priced ceramic materials, nano dispersion of metals for development of a new composite material, development of cosmetics that are appropriate to advanced countries regulation, and production and application of a prototype product manufactured by a medicine company, are continuously increasing.
  • Nano grinding machine is manufactured to form ultra fine powder in a wet manner and is called a stirred ball mill.
  • a dispersion method by using a conventional horizontal stirred ball mill is as below.
  • FIG. 1 is a cross-sectional view of a conventional horizontal stirred ball mill.
  • a slurry which is a liquid phase material is sucked into a cylindrical external casing through an inlet 10 arranged at one end of the external casing.
  • a collar 30 connected to the drive shaft 20 also rotates.
  • a milling disc 40 is arranged on an outer circumferential surface of the collar 3, and a plurality of balls 50 are arranged in a space between the external casing and the milling disc 40.
  • the liquid phase slurry is rotated and collides with the balls 50, and then the slurry is dispersed.
  • Gaps formed in a screen 60 disposed at an end of the milling disc 40 are fine so that the milled material slurry can be filtered through the screen 60.
  • the balls 60 cannot deviate from the space between the external casing and the milling disc 40.
  • only the dispersed slurry is discharged from the external casing through an outlet 70.
  • the balls 50 are leaning to the screen 60, and the screen 60 is gradually clogged.
  • a material having comparatively large viscosity is to be processed by using the balls 50 having a general size, a part of the screen 60 is clogged, which results in a considerable increase in pressure of the stirred ball mill and hindrance in a dispersion process.
  • the balls 50 may be interposed between a mechanical seal 80, which is installed to maintain an air-tight state between the drive shaft 20 and the external casing, and the screen 60, and when the fine balls 50 are used for a long time, the mechanical seal 80 may be damaged due to wear that occurs between the mechanical seal 80 and the screen 60.
  • the present invention provides a stirred ball mill in which efficient milling or dispersion can be performed without clogging of a screen due to balls and without damaging of a sealing member.
  • a stirred ball mill including: a shaft including a rod- shaped lower member, an upper member including a material outlet arranged in a center of an axial direction of the upper member, and an intermediate member connecting the lower member and the upper member and communicating an outside of an outer circumferential surface of the lower member and the material outlet; a turbine coupled to a top end of the lower member and including a plurality of wings generating an eddy current downwards; a plurality of discs each of which has a ring shape and in which a plurality of pins are coupled to a side surface of each of the disc and which are coupled to the lower member; a cylindrical casing in which the upper member is coupled to an upper portion of the casing and the shaft, the turbine, and the discs are inserted; a plurality of beads disposed to move in a space formed between each of the discs and the casing; an impeller coupled to a bottom end of the upper member and generating an eddy current downwards so
  • the turbine may include: an intermediate member having a ring shape and including a plurality of wings inwards; a lower member which has a ring shape and in which a plurality of upper grooves are formed so that an inside of each of the plurality of wings and a top end of the lower member are engaged with each other at a lower portion of the intermediate member; and an upper member which has a ring shape and in which a plurality of lower grooves are formed so that an outside of each of the plurality of wings and a bottom end of the upper member are engaged with each other at an upper portion of the intermediate member.
  • the impeller may include: a disc-shaped body, the body including a coupling hole which is formed in a middle of the body and in which the body is coupled to the upper member and an outflow hole in which the body communicates with the material outlet; and a plurality of wing protrusions formed at a bottom end of the body.
  • the sealing member may include a mechanical seal.
  • the stirred ball mill may further include a cooling jacket arranged at an outside of the casing so as to cool the casing.
  • the stirred ball mill may further include a driving member providing a driving force that is used to rotate the shaft.
  • the beads can be forcibly circulated through an eddy current that is generated by each of the turbine and the impeller, an additional screen is not needed, and a sealing member is not damaged due to the beads, and circulation is smoothly performed so that a strong milling force can be transferred to the raw material.
  • the beads and the raw material are easily separated from each other so that a milling or dispersion capability can be improved, productivity can be improved and a process time can be reduced.
  • the beads having a small size of about 0.02 mm can be used so that milling or dispersion of nano-sized particles having low viscosity can be performed.
  • FIG. 1 is a cross-sectional view of a conventional horizontal stirred ball mill
  • FIG. 2 is a perspective view of a turbine and a plurality of discs according to an embodiment of the present invention
  • FIG. 3 is a perspective view of an impeller according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a stirred ball mill according to an embodiment of the present invention.
  • FIG. 5 is a perspective view of a stirred ball mill according to an embodiment of the present invention. Best Mode for Carrying Out the Invention
  • FIG. 2 is a perspective view of a turbine and a plurality of discs according to an embodiment of the present invention.
  • FIG. 3 is a perspective view of an impeller according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a stirred ball mill according to an embodiment of the present invention.
  • FIG. 5 is a perspective view of a stirred ball mill according to an embodiment of the present invention.
  • the stirred ball mill includes a shaft 100, a turbine
  • the shaft 100 includes a lower member 110, an upper member 120, and an intermediate member 130.
  • the lower member 110, the upper member 120, and the intermediate member 130 are formed as one body.
  • the lower member 110, the upper member 120, and the intermediate member 130 may be coupled to one another.
  • the driving member 800 provides a driving force that is used to rotate the shaft 100.
  • a driven pulley 820 coupled to the shaft 100 by a V-belt 830 is rotated.
  • the driven pulley 820 is connected to the shaft 100 so that relative rotation cannot be performed.
  • the lower member 110 has a rod shape, and a material outlet 120a is arranged in the center of an axial direction of the upper member 120.
  • the intermediate member 130 communicates an outside of an outer circumferential surface of the lower member 110 with the material outlet 120a while connecting the lower member 110 and the upper member 120.
  • the turbine 200 is coupled to a top end of the lower member 110 and includes a plurality of wings 210a that generate an eddy current downwards.
  • Each of the discs 300 has a ring shape, and a plurality of pins 310 are coupled to a side surface of each of the discs 300, and the plurality of discs 300 are coupled to the lower member 110.
  • the turbine 200 includes an intermediate member 210, a lower member 220, and an upper member 230.
  • the intermediate member 210 has a ring shape and includes the plurality of wings
  • the lower member 220 has a ring shape, and a plurality of upper grooves 220a are formed in the lower member 220 so that an inside of each of a plurality of wings 230a and a top end of the lower member 220 can be engaged with each other at a lower portion of the intermediate member 210.
  • the upper member 230 has a ring shape, and a plurality of lower grooves 230a are formed in the upper member 230 so that an outside of each of the plurality of wings 210a and a bottom end of the upper member 230 can be engaged with each other at an upper portion of the intermediate member 210. In this way, the intermediate member 210 is fixed on the shaft 100 due to the lower member 220 and the upper member 230.
  • the casing 400 has a cylindrical shape, and the upper member 120 is coupled to an upper portion of the casing 400, and the shaft 100, the turbine 200, and the discs 300 are inserted in the casing 400.
  • the bottom plate 410 is coupled to an opened lower portion of the casing 400, and a material inlet 410a is arranged in the middle of the bottom plate 410.
  • a cooling jacket 420 is arranged at an outside of the casing 400 so as to cool the casing 400.
  • the sealing member 700 seals a space between the shaft 100 and the casing 400.
  • the sealing member 700 includes a mechanical seal.
  • the plurality of beads 500 are disposed to move in a space formed between each of the discs 300 and the casing 400.
  • the impeller 600 is coupled to a bottom end of the upper member 120 and generates an eddy current downwards so as to prevent the beads 500 from entering the material outlet 120a.
  • the impeller 600 includes a disc-shaped body 610.
  • the body 610 includes a coupling hole 620 which is formed in the middle of the body 610 and in which the body 610 is coupled to the upper member 120 and an outflow hole 630 in which the body 610 communicates with the material outlet 120a.
  • a plurality of wing protrusions 640 are formed at a bottom end of the body 610.
  • a material is supplied through the material inlet 410a arranged in the middle of the bottom plate 410, and the shaft 100 is rotated by the driving member 800.
  • the raw material R is supplied in the form of liquid phase slurry.
  • the discs 300 connected to the shaft 100 are rotated, and the pins 310 coupled to the discs 300 are rotated, and fluid flow occurs.
  • the plurality of beads 500 collide with the raw material R in the middle of a space formed between the shaft 100 and the casing 400 due to fluid flow caused by the pins 310 so that a dispersion process can be performed.
  • the impeller 600 generates an eddy current downwards so as to prevent the beads
  • the impeller 600 includes the disc-shaped body 610.
  • the plurality of wing protrusions 640 formed at the bottom end of the body 610 generate an eddy current downwards, and the beads 500 are fallen secondarily, and only the raw material R that is dispersed through the outflow hole 630 in which the body 610 communicates with the material outlet 120a, enters the material outlet 120a.
  • the beads 500 can be forcibly circulated through an eddy current that is generated by each of the turbine 200 and the impeller 600, an additional screen is not needed, and the sealing member 700 is not damaged due to the beads 500, and circulation is smoothly performed so that a strong milling force can be transferred to the raw material.
  • the beads 500 and the raw material R are easily separated from each other so that a milling or dispersion capability can be improved, productivity can be improved and a process time can be reduced.
  • the beads 500 having a small size of about 0.02 mm can be used so that milling or dispersion of nano-sized particles having low viscosity can be performed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Abstract

L'invention concerne un broyeur à billes, qui comporte: un arbre équipé d'un élément inférieur en forme de tige, d'un élément supérieur équipé d'une sortie de matériau disposée au centre d'une direction axiale de l'élément supérieur, et d'un élément intermédiaire reliant les éléments inférieur et supérieur et communiquant à l'extérieur d'une surface circonférentielle externe de l'élément inférieur et de la sortie de matériau; une turbine couplée à une extrémité supérieure de l'élément inférieur et comportant plusieurs ailettes générant en aval des courants de Foucault; plusieurs disques, chacun en forme d'anneau dans lesquels plusieurs broches sont couplées à une surface latérale de chaque disque et à l'élément inférieur; une structure cylindrique dans laquelle l'élément supérieur est couplé à une partie supérieure de ladite structure et de l'arbre, la turbine, et les disques sont insérés; plusieurs billes placées de manière à se déplacer dans un espace formé entre chaque disque et la structure; une roue couplée à une extrémité inférieure de l'élément supérieur et générant des courants de Foucault en aval de façon à empêcher les billes de pénétrer dans la sortie de matériau; une plaque inférieure couplée à une partie inférieure ouverte de la structure et comportant une admission de matériau aménagée au milieu de la plaque inférieure; et un élément d'étanchéité fermant hermétiquement l'espace entre l'élément supérieur et la structure. Étant donné que l'on peut forcer les billes à circuler à travers les courants de Foucault générés par la turbine et par la roue, il n'est pas nécessaire d'installer un crible supplémentaire, les billes n'endommageant pas un élément d'étanchéité, et la circulation s'effectue régulièrement, ce qui permet de transférer au matériau brut une puissante force de broyage.
PCT/KR2008/007870 2008-12-19 2008-12-31 Broyeur a billes WO2010071254A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080130320A KR100911760B1 (ko) 2008-12-19 2008-12-19 나노 분산기
KR10-2008-0130320 2008-12-19

Publications (1)

Publication Number Publication Date
WO2010071254A1 true WO2010071254A1 (fr) 2010-06-24

Family

ID=41209705

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/007870 WO2010071254A1 (fr) 2008-12-19 2008-12-31 Broyeur a billes

Country Status (2)

Country Link
KR (1) KR100911760B1 (fr)
WO (1) WO2010071254A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3799960A1 (fr) * 2019-10-01 2021-04-07 Bühler AG Broyeur à agitateur
CN114849857B (zh) * 2022-05-06 2023-09-22 山东德士力新材料科技有限公司 一种环氧耐磨地坪涂料生产用涂料砂磨机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0584494A (ja) * 1991-02-04 1993-04-06 Gie Anjou Rech Sa 酸化ガスの移送により水処理を行うための機械的な撹拌による２つの流体の混合装置及びその使用法
US6435707B1 (en) * 2000-11-30 2002-08-20 Dow Corning Toray Silicone Co., Ltd. Continuous mixing apparatus with upper and lower bladed disk impellers and a notched blade
KR200428407Y1 (ko) * 2006-07-10 2006-10-16 (주)그린유화 화학용 인라인 교반기
JP2008055288A (ja) * 2006-08-30 2008-03-13 Mitsui Mining Co Ltd メディア攪拌型湿式分散機及び微粒子の分散方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08299771A (ja) * 1995-05-12 1996-11-19 Toyobo Co Ltd キャンドモータインラインミキサ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0584494A (ja) * 1991-02-04 1993-04-06 Gie Anjou Rech Sa 酸化ガスの移送により水処理を行うための機械的な撹拌による２つの流体の混合装置及びその使用法
US6435707B1 (en) * 2000-11-30 2002-08-20 Dow Corning Toray Silicone Co., Ltd. Continuous mixing apparatus with upper and lower bladed disk impellers and a notched blade
KR200428407Y1 (ko) * 2006-07-10 2006-10-16 (주)그린유화 화학용 인라인 교반기
JP2008055288A (ja) * 2006-08-30 2008-03-13 Mitsui Mining Co Ltd メディア攪拌型湿式分散機及び微粒子の分散方法

Also Published As

Publication number Publication date
KR100911760B1 (ko) 2009-08-10

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