EP0451290A1 - Vibro-classeur broyeur - Google Patents

Vibro-classeur broyeur Download PDF

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Publication number
EP0451290A1
EP0451290A1 EP90915824A EP90915824A EP0451290A1 EP 0451290 A1 EP0451290 A1 EP 0451290A1 EP 90915824 A EP90915824 A EP 90915824A EP 90915824 A EP90915824 A EP 90915824A EP 0451290 A1 EP0451290 A1 EP 0451290A1
Authority
EP
European Patent Office
Prior art keywords
vibration
classifier
set forth
classification
chamber
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.)
Withdrawn
Application number
EP90915824A
Other languages
German (de)
English (en)
Other versions
EP0451290A4 (en
Inventor
Terumi Sasaki
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 ZYARI KK
Original Assignee
KANSAI ZYARI KK
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 ZYARI KK filed Critical KANSAI ZYARI KK
Publication of EP0451290A1 publication Critical patent/EP0451290A1/fr
Publication of EP0451290A4 publication Critical patent/EP0451290A4/en
Withdrawn legal-status Critical Current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
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B02C23/30—Passing gas through crushing or disintegrating zone the applied gas acting to effect material separation
    • 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
    • B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents

Definitions

  • This invention relates to a vibration mill with a classifier which is used to mill, pulverize, or grind material such as mineral powder material and to classify the milled, pulverized or ground material.
  • mills such as an impact mill for milling material by a high-speed rotatable impact plate thereof and a vibration mill for milling material therein by vibrating a grinding medium such as a rod were used.
  • the milled material only having a desired particle size was classified by a classifier which is separated from the mill.
  • the classifier for performing the above-mentioned classification is known as, for example, a centrifugal classifier.
  • the centrifugal classifier is designed that its container for storing the milled material can be rotated at a high speed so as to classify the milled material therein into coase particles and fine particles by the effect of the centrifugal force.
  • the mill and the classifier separated from the mill are required to perform the above-mentioned milling and classification operations, it is a disadvantage to be large in size and complex in construction.
  • the classifier including the container is large in size and complex in construction, because the container must be rotated at a high speed.
  • the milled material in a floc-state can not be surely classfied and thus it is impossible to perform the clasification in a highly precise manner.
  • the milled material is located on the inner face of the container by the effect of the centrifugal force, the inner face is quickly worn and thus the maintenance cost for exchanging the used container to a new container is high.
  • This invention is accomplished to solve the above-mentioned problems of the prior art.
  • the first object of the invention it is to develop a vibration mill with a classifier which can be constructed in a simple manner and be compact in size, and can perform classification operation in a sufficient precise manner.
  • the second object of the invention is to provide a vibration mill with a classifier wherein milling and classification operations can be performed in a highly efficent manner.
  • a vibration mill with a classifier is characterized by comprising: a vibration container for storing many grinding media for milling powder material, the vibration container being formed in an annular shape; the vibration container provided with a vibration motor for vibrating the grinding media, the vibration container having a supply port for suplying the powder material; the vibration container in which a lower portion thereof employs as a milling chamber gradually upwardly widened in a radial width of the milling chamber; the vibration container in which an upper portion thereof employs as a classification chamber defined by an upwardly extending portion having a constant radial width equal to the radial width of the upper portion of the milling chamber; the milling chamber in which a bottom plate of the milling chamber is provided with many gas supply small openings for supplying classification gas into the milling chamber which are communicated to a classification gas supply port; and the classification chamber in which an upper portion of the classification chamber is provided with a discharge port for discharging the milled powder material having a particle size equal to or
  • the powder material is supplied through the supply port into the milling chamber.
  • the supplied powder material is milled, ground or pulverized in a highly efficient manner by the impact and contact actions of the grinding mediums or grinding media. Furthermore, if the supplied powder material is in a floc state, the material can be milled, ground or pelverized in a highly efficient manner.
  • classification gas such as air is supplied through the gas supply small port from the bottom portion of the milling chamber.
  • the classification gas A is supplied upwardly through the milling chamber 1a in such a manner that the flow velocity of the classification gas A is initially at a maximum and then gradually reduced, because the radial width of the milling chamber 1a is gradually upwardly widened from the bottom thereof.
  • the classification gas upwardly blows at a constant minimum flow velocity in the classification chamber.
  • the classification gas blows upwardly the powder material in the milling chamber.
  • the classification gas blows the powder material at the maximum flow velocity.
  • the maximum flow velocity is set to apply an upwardly-blowing force greater than the gravitational force exerting on the powder material.
  • the minimum flow velocity when reducing the flow velocity of the classification gas is set to apply the upwardly-blowing force of the fine powder having an average particle size equal to or smaller than the desired particle size.
  • the fine powder of the powder material blowing at the minimum flow velocity upwardly passes through the classification chamber, and then the fine powder together with the classification gas is discharged from the discharge port. After that, the fine powder will be seperated from the classification gas.
  • the powder material is milled while the fine particles are classified from coase particles.
  • the classification gas blows upwardly the fine particles each having a particle size equal to or less than a desired particle size at the minimum flow velocity of the classification gas. But the classification gas can not blow upwardly the coase particles at the minimum flow velocity of the classification gas.
  • a vibration mill with a classifier of this invention is provided to accomplish the second object, wherein an annular vibration container is formed in a corrugated shape in its cross-section.
  • the vibration container formed in the mentioned manner can transmit the vibration action thereof to the grinding mediums in a highly efficient manner. This leads the complex impact and contact actions of the grinding mediums for interaction. Thus, it is possible to reduce the particle size of the powder material and the milling and classification operations can be performed in a highly efficient manner.
  • the vibration container is provided with a baffle bar or bars, so as to forcedly transmit vibration action generated by the vibration container to the powder material.
  • Fig.1 is a sectional view showing the whole of a first embodiment of a vibration mill with a classifier.
  • Fig.2 is a perspective view showing an interior structure of the first embodiment of the vibration mill with the classifier.
  • Fig.3 is a cross-sectional view showing the first embodiment of the vibration mill with the classifier.
  • Fig.4 is a plan view showing a vibration container of a second embodiment of the vibration mill with the classifier.
  • Fig.5 is a perspective view showing an interior structure of a third embodiment of the vibration mill with the classifier.
  • Fig.6 is an explanetory view showing vibration motors which are arranged in a different manner compared with vibration motors shown in Fig.1.
  • Figs.1 to 3 show a first embodiment of a vibration mill with a classifier. The structure of the vibration mill will be explained hereinafter.
  • a reference numeral 1 indicates a vibration container which has a large radially outer cylinder 10 and a small radially inner cylinder 11 to define an annular shape.
  • the upper end of the vibration container 1 and the upper end of the inner cylinder 11 are closed by an upper plate 12.
  • the bottom end of the vibration cotainer 1 and the bottom end of the inner cylinder 11 are also closed by a base plate 13.
  • the vibration container 1 is suspended or supported by means of coil springs 20 on a base 2 fixed on a floor so as to vibrate the vibration container 1.
  • Two vibration motors 3, 3 are provided on the underside of the base plate 13.
  • One vibration motor 3 meets face to face with other vibration motor 3 along the diameter direction of the vibration container 1.
  • the rotation direction of the output shaft of one vibration motor 3 coincides with that of the output shaft of other vibration motor 3 from the viewpoint of the center of the vibration container 1.
  • the lower portion of the vibration container 1 employs as a milling chamber or grinding chamber 1a defined by inclined plates 14, 14 so as to gradually upwardly widen the radial width of the milling chamber 1a from the bottom thereof.
  • the upper portion of the vibration container 1 employs as a classification chamber 1b which is defined by vertically extending portions of the outer and inner cylinders 10, 11 and has a constant radial width equal to the upper radial width of the milling chamber 1a.
  • Many balls B as grinding mediums for material P to be ground, milled, or puluerized are stored within both the milling chamber 1a and the classification chamber 1b.
  • the bottom plate 15 of the milling chamber 1a is provided with many small gas supply-openings 4a so as to communicate the milling chamber 1a to a gas supply port 4.
  • a material supply pipe 60 which employs as a supply port 6 for the material P to be milled is connected to the milling chamber 1a.
  • the supply port 6 is arranged immediately adjacent to the small hole 5a along a movement direction of the balls B.
  • the pipe 60 for supplying the material to be milled has plural branch pipes 62 which connect an outer pipe 61 and connect through the outer cylinder 10 and the inclined plate 14 to the milling chamber 1a.
  • the outer annular pipe 61 is connected to a supply cylinder 63 for supplying the powder material to be milled.
  • the upper portion of the classification chamber 1b is provided with discharge ports 7.
  • the dischange ports 7 employ to discharge fine powder or pulverized powder P2 having a particle size equal to or less than the desired particle size of the material P to be milled, together with the classification gas A.
  • the classification gas A is supplied via the small openings 4a to upwardly blow or transfer the fine powder P2.
  • the discharge ports 7 are designed to be opened to the inner cylinder 11 along the inner circumference of the inner cylinder 11.
  • a recycling opening 8 for receiving the fine powder and a port 9 for discharging the classification gas A are communicated to the discharge port 7.
  • the opening 8 is communicated to a recycling pipe 81 which extends from a hopper 80 of the lower side of the inner cylinder 11 through the inner cylinder 11 and outwardly projects over the outer cylinder 10.
  • the gas discharge port 9 passes through the upper portion of the inner cylinder 11 and the upper plate 12 and upwardly outwardly projects over.
  • the gas discharge port 9 is surrounded by a guide cylinder 90 downwardly projecting from the inner face of the upper plate 12.
  • the gas discharge port 9 is communicated to a dust collector or a cyclone and so on (not shown in Figures).
  • the vibration container 1 When synchronizing the vibration action generated by a pendulum of one vibrating motor 3 with the vibration action generated by a pendulum of the other vibrating motor 3 in both the vertical direction and the circumferential direction by operating the vibrating motors 3,3, the vibration container 1 produces the vibration action along the circumferential direction and the vertical vibration action. As a result, many balls B are vibrated and moved along the circular circumference direction within both the milling chamber 1a and the classification chamber 1b.
  • the powder material P supplied from the cylinder 63 for supplying the powder material P into the annular pipe 61 is moved along only one-way direction by a vibration action in a circular manner roughly along the circumference of the vibration container 1.
  • the powder material P to be milled in the annular pipe 61 is supplied through the branch pipe 62 and the supply port 6 into the milling chamber 1a of the vibration container 1.
  • the powder material P within the milling chamber 1a in the above-mentioned manner is moved or transmitted together with the balls B, and milled, pulverized or ground by the impact and contact actions of the balls B against the powder material P. Furthermore, the floc of the powder material P can be surely milled.
  • the powder material P is downwardly supplied from the cylinder 63 into the annular pipe 61 and then moved or transmitted along only one way-direction by the vibrating movement of the vibration container 1, the powder material P is reduced to an average particle size in transmitting movement and then supplied through the supply port 6 into the milling chamber 1a.
  • the classification gas A such as air is supplied from the bottom portion of the milling chamber 1a via the gas supply small port 4a.
  • the classification gas A is supplied upwardly through the milling chamber 1a in such a manner that the flow velocity of the classification gas A is initially at a maximum and then gradually reduced, because the radial width of the milling chamber 1a is gradually upwardly widened from the bottom thereof.
  • the classification gas A is supplied into the classification chamber 1b and goes upwardly through the classification chamber 1b at a constant minimum flow velocity.
  • the classification gas A blows or transmits the powder material P supplied into the milling chamber 1a.
  • the classification gas A blows or transmits the powder material P at the maximum flow velocity.
  • the maximum flow velocity for the powder material must be set to apply the upwardly-blowing force of the powder material P greater than the gravitational force exerting on the powder material.
  • the minimum flow velocity of the classification gas A in the milling chamber 1a must be set to obtain the upwardly-blowing force of the fine powder P2 having a particle size equal to or smaller than the desired particle size.
  • the fine powder P2 of the powder material P at the minumum flow velocity is upwardly blown or transmitted through the classification chamber 1b and then the fine powder P2 together with the classifcation gas A is discharged through the discharge ports 7.
  • the discharged fine powder P2 with the classification gas A adheres to the inner circumference of the inner cylinder 11 and thus the fine powder P2 can be separated from the classification gas by the effect of the centrifugal force generated by the flow of the classification gas A, because the discharge ports 7 are provided along the inner circumference of the inner cylinder 11.
  • the fine powder P2 separated form the classification gas A downwardly moves and then is collected by the hopper 80 and the collecting pipe 81.
  • the classification gas A upwardly blows from the lower portion of the guide cylinder 90 to the center portion of the guide cylinder 90 and then is discharged through the gas exhausting port 9 to the outside.
  • the coase particles P1 of the powder material P which can not be upwardly moved at the minimum flow velocity remain in the milling chamber 1a.
  • the milling operation for the coase particles are continuously performed until the coase particles are reduced to a particle size equal to or smaller than the desired particle size.
  • a vibration container 1 has an annular corrugated shape or space in a plan view defined by a large corrugated radial outer cylinder and a small corrugated radial inner cylinder.
  • the construction of the second embodiment is similler to that of the first embodiment except that the secnd embodiment has the annular corrugated shape.
  • balls B are moved both along a lateral direction with respect to a circumferential direction and along the circumferential direction.
  • the balls B are moved not only in the lateral direction but also in the circumference direction to lead complex impact and contact actions of the balls B against the powder material P to be milled.
  • the classification operation can be performed in a highly efficient manner.
  • the third embodiment of the vibration mill with the classifier is characterized by comprising baffle bars (baffle members) C for forcedly transmitting vibration action produced by the vibration container 1 to the balls B.
  • baffle bars baffle members
  • the powder material can be reduced to a fine particle size and the milling and classification operations can be performed in a highly efficient manner.
  • the number of the vibration motors can be selected.
  • Each of the vibration motors can be also placed on a desired position, for example, as shown in Fig.6, the vibration motor 3 can be also set in such a manner that the axis of the output shaft of the vibration motor 3 is roughly parallel to a vertical direction. This particularly leads the advantage of no vertical-vibration motion.
  • the number of the vibration motors can be optionally selected in this case.
  • Grinding medium may be optionally formed in a different shape or formed by a different material, for example, a metal grinding media or a ceramic grinding media may be used.
  • the classification gas such nitrogen gas may be used.
  • the vibration mill with the classifier of this invention as the vibration mill is provided with the annular vibration container or drum, milling operation of the powder material and separating operation of the fine particles from the coase particles, can be successively performed.
  • the vibration mill with the classifier can be constructed in a simple manner and be compact in size.
  • the flow velocity of the classification gas can be reduced to the minimum value so as to upwardly blow the fine powder at the minimum flow velocity, the classification operation can be performed in a high precision.
  • the vibration container is formed in the corrugated shape or space
  • the impact and contact actions or grinding medium such as balls increase in efficiency and thus milling and classification operations can be performed in a highly efficient manner.
  • the vibration mill with the classifier of this invention as the vibration container is equiped within the baffle bars, the impact and contact actions of grinding medium such as the balls increase in efficiency and thus milling and classification operations can be performed in a highly efficient manner.
  • the vibration mill with the classfier of this invention is used for milling or grinding material such as mineral powder material and classifing the milled powder material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

Vibro-classeur broyeur de minerai, présentant une structure simple et peu encombrante et offrant une précision de classement satisfaisante. Le vibro-classeur est pourvu d'un moteur vibratoire (3) faisant osciller des organes de broyage dans une cuve de vibration annulaire (1) contenant un ensemble d'organes de broyage servant à broyer un matériau en poudre (P), et une ouverture d'alimentation en matériau (P). La partie inférieure de la cuve (1) sert de chambre de broyage (1a) dans laquelle la largeur de l'ouverture dans le sens radial augmente progressivement depuis le fond vers le haut. La plaque de fond de la chambre de broyage est pourvue d'un ensemble de perforations (4a) d'alimentation en air, en communication avec une ouverture (4) pour le gaz de classement. La partie supérieure de la cuve (1) fait office de chambre de classement (1b) qui s'étend vers le haut en maintenant la même largeur d'ouverture que celle à l'extrémité supérieure de la chambre de broyage. Le sommet de la chambre de classement est pourvue d'une ouverture de décharge (7) à travers laquelle on évacue un article broyé présentant une granulométrie égale ou inférieure à la granulométrie requise, en même temps que le gaz de classement qui mont à travers les perforations (4a).
EP19900915824 1989-10-31 1990-10-26 Vibration grinding classifier Withdrawn EP0451290A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP28547989A JPH03146181A (ja) 1989-10-31 1989-10-31 振動粉砕分級装置
JP285479/89 1989-10-31

Publications (2)

Publication Number Publication Date
EP0451290A1 true EP0451290A1 (fr) 1991-10-16
EP0451290A4 EP0451290A4 (en) 1992-04-15

Family

ID=17692052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900915824 Withdrawn EP0451290A4 (en) 1989-10-31 1990-10-26 Vibration grinding classifier

Country Status (4)

Country Link
EP (1) EP0451290A4 (fr)
JP (1) JPH03146181A (fr)
AU (1) AU6609090A (fr)
WO (1) WO1991006370A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2053393A1 (es) * 1992-11-12 1994-07-16 Provedora Hispano Holandesa S Procedimiento para la molturacion de los frutos secos del pimiento y producto obtenido por dicho procedimiento.
EP0997196A2 (fr) * 1998-10-06 2000-05-03 QED International Limited Procédé et dispositif de broyage de matériau
EP1908523A1 (fr) * 2006-10-05 2008-04-09 René Brunone Dispositif de broyage de matériaux minéraux
CN106994380A (zh) * 2016-01-25 2017-08-01 四平市隆发机械制造有限公司 高频振动超细微粉粉料粉磨机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1040072C (zh) * 1993-07-01 1998-10-07 张世礼 强制内分级式振动磨
CN109482313A (zh) * 2019-01-14 2019-03-19 香农工业设备制造南京有限公司 一种应用于振动研磨机的自动出料磨盘
CN109877042A (zh) * 2019-03-19 2019-06-14 苏州双恩智能科技有限公司 一种钛合金细微粉末气体筛分器
CN114798195A (zh) * 2022-06-24 2022-07-29 潍坊市凯隆机械有限公司 一种应用于金属零部件的振动气筛装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100088A (en) * 1960-11-19 1963-08-06 Podmore And Sons Ltd W Vibration mills
JPH0626680B2 (ja) * 1987-09-02 1994-04-13 輝美 佐々木 粉砕分級装置
JPH0694007B2 (ja) * 1988-05-21 1994-11-24 株式会社中山鉄工所 振動粉砕分級装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No further relevant documents have been disclosed *
See also references of WO9106370A1 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2053393A1 (es) * 1992-11-12 1994-07-16 Provedora Hispano Holandesa S Procedimiento para la molturacion de los frutos secos del pimiento y producto obtenido por dicho procedimiento.
EP0997196A2 (fr) * 1998-10-06 2000-05-03 QED International Limited Procédé et dispositif de broyage de matériau
EP0997196A3 (fr) * 1998-10-06 2000-12-20 QED International Limited Procédé et dispositif de broyage de matériau
EP1908523A1 (fr) * 2006-10-05 2008-04-09 René Brunone Dispositif de broyage de matériaux minéraux
FR2906735A1 (fr) * 2006-10-05 2008-04-11 Rene Brunone Dispositif de broyage de materiaux mineraux.
CN106994380A (zh) * 2016-01-25 2017-08-01 四平市隆发机械制造有限公司 高频振动超细微粉粉料粉磨机

Also Published As

Publication number Publication date
AU6609090A (en) 1991-05-31
WO1991006370A1 (fr) 1991-05-16
JPH03146181A (ja) 1991-06-21
EP0451290A4 (en) 1992-04-15

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