EP2170518B1 - Laborschwingmühle mit schräggestellten mahlbechern - Google Patents

Laborschwingmühle mit schräggestellten mahlbechern Download PDF

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Publication number
EP2170518B1
EP2170518B1 EP08784741.4A EP08784741A EP2170518B1 EP 2170518 B1 EP2170518 B1 EP 2170518B1 EP 08784741 A EP08784741 A EP 08784741A EP 2170518 B1 EP2170518 B1 EP 2170518B1
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EP
European Patent Office
Prior art keywords
grinding
drive
vibration
mill according
laboratory
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.)
Active
Application number
EP08784741.4A
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German (de)
English (en)
French (fr)
Other versions
EP2170518A1 (de
Inventor
Stefan MÄHLER
Jürgen PANKRATZ
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.)
Retsch GmbH
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Retsch GmbH
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Publication date
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Publication of EP2170518A1 publication Critical patent/EP2170518A1/de
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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
    • B02C17/14—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

Definitions

  • the invention relates to a laboratory vibrating mill with at least two-dimensional circular oscillating drive and with at least one holder for a clamped therein, a filling of grinding bodies having elongated and provided with end Mahlbecherböden grinding bowl.
  • a two-dimensional circular oscillating drive having laboratory vibrating mills preferably designed as balls grinding media are pressed by the high centrifugal forces acting against the outer wall of the grinding bowl and crush here by rolling pressure and friction effect the material to be ground between them and the Mahlbecherwandung.
  • a vibratory mill is described with a substantially stationary arrangement of the grinding bowl, wherein the longitudinal axis of the grinding bowl is tilted according to an embodiment already by a small angle from the vertical.
  • the movement regime of the grinding bowl is set in each case so that the grinding bodies roll exclusively along the wall of the grinding bowl due to the generated centrifugal force.
  • a vibratory mill with a substantially horizontal arrangement of a Mahlbechers known, however, has a subdivision of its interior in many, each partitioned by intermediate walls chambers.
  • the grinding bodies can not develop a component of movement in the axial skewing direction of the grinding bowl within the narrow chambers formed in the longitudinal axis of the grinding bowl.
  • the invention has for its object to increase the energy input during the grinding process in a laboratory vibratory mill with the generic features and thus to improve the overall grinding result.
  • the invention provides in its basic idea that the holder for the grinding bowl is designed such that the longitudinal axis of the grinding bowl encloses an angle with a plane of movement of the circular oscillating drive, which is between 0 ° and 60 °, such that due to the inclined position of the Mahlbechers in relation to the plane of motion of the circular oscillating drive conditioned trajectories of the grinding media in the grinding bowl the frontal Mahlbecherböden are included as a stop and grinding surface in the crushing process.
  • the invention has the advantage that on the one hand during the grinding process, a periodic component of motion acts on the grinding media in the direction of the outer wall of the grinding bowl, while on the other hand, due to the inclination of the grinding bowl to the plane of motion of the rotary motion another, further movement component in the direction of the longitudinal axis of the grinding bowl on the grinding media works. This ensures that during the movement of the grinding media on the outer wall of the Mahlbechers a predominantly frictional stress and the impact of the grinding media on the front Mahlbecherböden an impact stress of the ground material. At the same time, due to the movement of the grinding media in the longitudinal direction the grinding chamber and the grinding material mixed better so that all the particles of the material to be ground are claimed simultaneously and thus the shredding efficiency is increased.
  • a three-dimensionally acting drive with an additional, acting perpendicular to the plane of the circular oscillating motion on the grinding bowl movement component is provided to further improve the shredding efficiency.
  • the force acting on the grinding body movement component is reinforced in the direction of the Mahlbecherböden.
  • the longitudinal axis of the grinding bowl is to enclose an angle with the plane of motion of the circular oscillating drive, two directions of movement of the three-dimensional excitation can form a movement plane as a reference for the inclined position of the grinding bowl in a three-dimensionally acting drive.
  • the length of the grinding bowl to match the vibration intensity which is defined by the respectively set amplitude of the drive and its frequency
  • the length of the grinding bowl to be measured in detail so is that the kinetic energy of the impacting on the end Mahlbecherböden grinding media is maximum.
  • the ratio of the amplitude of the drive to the length of the Mahlbechers depending on the size of the grinding media used between 0.3 and 1.6.
  • the drive has adjustable oscillation frequencies. Furthermore, it can be provided that the drive has adjustable oscillation amplitudes.
  • the invention can also be used in other types of circular oscillating drives.
  • the drive is aligned as an unbalanced oscillating drive.
  • the drive may be designed as a cyclically operating or as a non-cyclically operating oscillating drive.
  • the grinding media are formed as balls.
  • the largest distance between two opposing wall regions defining the cross section of the grinding bowl is smaller than the length of the grinding bowl which is determined perpendicular to the cross-sectional area.
  • the invention relates to the use of longitudinally extended grinding bowls with respective end-face grinding bowl bases
  • the application of the invention to all-round rotation-symmetrical grinding bowls does not make sense.
  • the invention can be realized in different Mahlbecherformen.
  • the grinding bowl has a circular cross section or an elliptical cross section or a polygonal cross section with rounded corner regions, wherein in the last-mentioned embodiment, the rounded corner regions of the grinding bowl have a radius corresponding to the radius of the grinding bodies.
  • Other Mahlbecherformen are also possible.
  • the end-side Mahlbecherböden the Mahlbechers are flat, so that, for example, results in a cylindrical cross-section having Mahlbechern a cylindrical design of the Mahlbecher.
  • the end-side Mahlbecherböden the Mahlbechers are formed dome-shaped.
  • FIG. 1 schematized and reproduced in a limited to the drive 10 with Mahlbecherhalterung representation Laboratory vibration mill causes the rotational movement of the rotatably mounted on the Sonnenradachse 1 sun gear 2 via the belt drive 3, a rotation of the intermediate shaft 4.
  • the gear 5 is firmly connected and drives the planetary shaft 7 via the further gear 6.
  • a grinding bowl 8 is clamped obliquely to the plane of movement 20 of the circular oscillating drive defined by the sun gear plane.
  • the grinding bowl 8 rotates in the ratio 1: -1 to the rotation of the sun gear 2, so that adjusts a circulating circular motion. Due to the inclination of the grinding bowl 8 in relation to the plane of movement 20 of the circular oscillating drive, the frontal Mahlbecherböden the grinding bowl 8 as a stop or grinding surfaces are included in the crushing process.
  • FIG. 2 illustrated embodiment shows the laboratory vibrating mill with a drive designed as a non-agitated drive 10.
  • the drive 10 is supported by springs 11 on a stationary base plate 15 from.
  • the drive 10 consists of the drive motor 12, the drive shaft 13 and the imbalance 14 and generates a speed-dependent, circumferential horizontal force.
  • This excites the spring mass oscillator consisting of the drive 10 with the mounting plate 16, the attached payload in the form of two Mahlbecherhalterache 9 with clamped grinding bowls 8 and the springs 11 in two dimensions, so that there is a circulating in the plane of movement 20 circular motion.
  • the two Mahlbecherhalteronne 9 move together with the clamped grinding bowls 8 in this circular path.
  • the drive generates an additional component of motion acting on the grinding bowl 8 perpendicular to the plane 20 of the circular oscillating movement, so that the drive is correspondingly designed with a three-dimensional action.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP08784741.4A 2007-07-14 2008-07-12 Laborschwingmühle mit schräggestellten mahlbechern Active EP2170518B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007032893 2007-07-14
PCT/EP2008/005707 WO2009026990A1 (de) 2007-07-14 2008-07-12 Laborschwingmühle mit schräggestellten mahlbechern

Publications (2)

Publication Number Publication Date
EP2170518A1 EP2170518A1 (de) 2010-04-07
EP2170518B1 true EP2170518B1 (de) 2015-09-09

Family

ID=39811450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08784741.4A Active EP2170518B1 (de) 2007-07-14 2008-07-12 Laborschwingmühle mit schräggestellten mahlbechern

Country Status (6)

Country Link
US (1) US8042754B2 (zh)
EP (1) EP2170518B1 (zh)
JP (1) JP5464499B2 (zh)
CN (1) CN101743066B (zh)
RU (1) RU2477660C2 (zh)
WO (1) WO2009026990A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013111934B4 (de) * 2012-10-31 2018-01-04 Denso Corporation Zentrifugalkugelmühle

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704018B1 (de) * 2010-10-07 2014-08-29 Michael Dvorak Dr Mühle sowie Verfahren zum Mahlen von Mahlgut mit derselben.
US8016218B1 (en) 2011-03-16 2011-09-13 Mitchell Friedman Linear specimen shaker
US8596566B2 (en) * 2012-01-16 2013-12-03 Yang-Te Hsu Biomedical homogenizing device
CN102600938B (zh) * 2012-03-19 2014-01-15 扬州大学 直流调速小型球磨机
EP2861350B1 (de) * 2012-06-15 2016-03-23 Retsch GmbH Kugelmühle mit räumlicher unwuchtkompensation
US9759638B1 (en) * 2013-04-25 2017-09-12 Rotaprep, Inc. Apparatus and method for grinding of samples for analysis
PL406540A1 (pl) * 2013-12-16 2015-06-22 Politechnika Krakowska im. Tadeusza Kościuszki Napęd ultraenergetycznego młyna pulsacyjno-rotacyjnego
FR3025729B1 (fr) * 2014-09-17 2016-12-09 Bertin Technologies Sa Ensemble pour le broyage d'echantillons biologiques
CN105665082A (zh) * 2016-01-25 2016-06-15 长春工业大学 一种三维摆动式高能球磨机
US10518269B2 (en) 2017-10-13 2019-12-31 SPEX SamplePrep, LLC Grinding mill with securing frame
CN111298923B (zh) * 2018-12-11 2021-11-30 中国食品药品检定研究院 破碎离心一体装置
RU2760394C1 (ru) * 2020-11-23 2021-11-24 Федеральное государственное бюджетное образовательное учреждение высшего образования «Пензенский государственный университет» (ФГБОУ ВО «Пензенский государственный университет») Способ измельчения материалов в центробежной планетарной мельнице
CN114918012B (zh) * 2022-05-13 2023-07-14 信阳职业技术学院 一种多段式球磨机

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GB813654A (en) * 1956-11-14 1959-05-21 Podmores Engineers Ltd Improvements in and relating to grinding mills
FR1078001A (fr) * 1952-06-03 1954-11-15 Broyeur-mortier
BE791276A (fr) * 1972-04-15 1973-03-01 Herzog Gottfried Concasseur oscillant pour broyer, homogeneiser et melanger des solides,produits chimiques et les produits dont ils decoulent
SU822893A1 (ru) * 1979-07-02 1981-04-23 Комплексная Экспедиция Всесоюзногонаучно-Исследовательского Институтаминерального Сырья Лабораторна вибрационна мельница
JPS6253748A (ja) * 1985-09-02 1987-03-09 株式会社徳寿工作所 水平旋回型粉砕機
JPS62227456A (ja) * 1986-03-28 1987-10-06 株式会社　徳寿工作所 水平旋回型粉砕機
JPS63197558A (ja) * 1987-02-12 1988-08-16 川崎重工業株式会社 振動ロツドミル
JPH0626680B2 (ja) * 1987-09-02 1994-04-13 輝美 佐々木 粉砕分級装置
CN1017405B (zh) * 1989-01-28 1992-07-15 西安冶金建筑学院 圆运动振动磨机
JPH04135161A (ja) 1990-09-21 1992-05-08 Ietatsu Ono 研磨方法とその研磨加工装置
JP2003220344A (ja) * 2002-01-29 2003-08-05 Nichia Chem Ind Ltd 連続式振動ミル
GB2399518B (en) * 2003-03-17 2005-04-13 Freshcrush Ltd Crushing apparatus
JP4773072B2 (ja) * 2004-08-03 2011-09-14 安井器械株式会社 細胞破砕装置
JP4937502B2 (ja) * 2004-08-04 2012-05-23 有限会社ナガオシステム 遊星ボールミル
CN2726722Y (zh) * 2004-08-27 2005-09-21 北京市有色金属研究总院 下挂扭摆式高能球磨机
JP4903419B2 (ja) * 2005-04-20 2012-03-28 安井器械株式会社 破砕方法とそれを用いた破砕装置及び破砕処理装置
JP4439442B2 (ja) * 2005-07-05 2010-03-24 アズワン株式会社 粉砕器具及びこれを備えた粉砕装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013111934B4 (de) * 2012-10-31 2018-01-04 Denso Corporation Zentrifugalkugelmühle

Also Published As

Publication number Publication date
WO2009026990A1 (de) 2009-03-05
EP2170518A1 (de) 2010-04-07
RU2010100348A (ru) 2011-08-20
CN101743066B (zh) 2011-11-16
RU2477660C2 (ru) 2013-03-20
US20100181402A1 (en) 2010-07-22
JP5464499B2 (ja) 2014-04-09
CN101743066A (zh) 2010-06-16
JP2010533577A (ja) 2010-10-28
US8042754B2 (en) 2011-10-25

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