EP2170518B1 - Laboratory vibration grinding mill having inclined grinding beakers - Google Patents
Laboratory vibration grinding mill having inclined grinding beakers Download PDFInfo
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- 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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- 230000033001 locomotion Effects 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- 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.
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- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
Die Erfindung betrifft eine Laborschwingmühle mit einem wenigstens zweidimensional wirkenden Kreisschwingantrieb und mit wenigstens einer Halterung für einen darin eingespannten, eine Füllung von Mahlkörpern aufweisenden längserstreckten und mit stirnseitigen Mahlbecherböden versehenen Mahlbecher.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.
Eine Laborschwingmühle mit den vorgenannten Merkmalen ist in einer Bauweise als eine ein Drehzahlverhältnis k = 1: -1 aufweisende Planetenkugelmühle aus dem Firmenprospekt "Fliehkraft-Kugelmühlen" der F. Kurt Retsch GmbH & Co. KG, Haan, aus 4/1988 bekannt. Bei derartigen, einen zweidimensional wirkenden Kreisschwingantrieb aufweisenden Laborschwingmühlen werden die vorzugsweise als Kugeln ausgebildeten Mahlkörper durch die einwirkenden hohen Fliehkräfte gegen die Außenwand der Mahlbecher gepresst und zerkleinern hier durch abrollende Druck- und Reibwirkung das Mahlgut zwischen sich und der Mahlbecherwandung. Als Mahlbecher kommen zylindrische Mahlbecher zum Einsatz, die mittels der an der Laborschwingmühle vorgesehenen Mahlbecherhalterung in einer senkrechten Ausrichtung ihrer Längsachse zur Ebene der zweidimensionalen Kreisschwingbewegung in die Laborschwingmühle eingespannt sind. Zur Verbesserung des Mahlergebnisses ist es zusätzlich bekannt, das Drehzahlverhältnis einer Planetenkugelmühle auf k > 1 auszulegen, so dass sich die Mahlkörper während des Mahlvorgangs von der Wand des Mahlbechers ablösen und längs einer sekantenförmigen Bewegungslinie durch den Mahlbecher fliegen und auf einen dem Ablösepunkt gegenüberliegenden Wandbereich des Mahlbechers auftreffen, so dass die Zerkleinerung durch Prall- oder Schlagbeanspruchung zusätzlich verbessert wird.A laboratory vibratory mill with the aforementioned features is in a construction as a speed ratio k = 1: -1 having planetary ball mill from the company brochure "centrifugal ball mills" of F. Kurt Retsch GmbH & Co. KG, Haan, from 4/1988 known. In such, 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. As Mahlbecher cylindrical grinding bowls are used, which are clamped by means provided on the laboratory vibrating mill Mahlbecherhalterung in a vertical orientation of its longitudinal axis to the plane of the two-dimensional circular oscillation in the laboratory vibrating mill. To improve the grinding result, it is additionally known that Speed ratio of a planetary ball mill on k> 1 design so that the grinding media detach during the grinding process from the wall of the grinding bowl and fly along a secant line of movement through the grinding bowl and impinge on a wall of the grinding bowl opposite the detachment point, so that the crushing by impact or impact load is additionally improved.
In der
Schließlich ist aus der
Der Erfindung liegt die Aufgabe zugrunde, bei einer Laborschwingmühle mit den gattungsgemäßen Merkmalen den Energieeintrag beim Mahlvorgang zu vergrößern und somit das Mahlergebnis insgesamt zu verbessern.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.
Die Lösung dieser Aufgabe ergibt sich aus dem Anspruch 1; vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.The solution to this problem arises from the
Die Erfindung sieht in ihrem Grundgedanken vor, dass die Halterung für den Mahlbecher derart ausgebildet ist, dass die Längsachse des Mahlbechers einen Winkel mit einer Bewegungsebene des Kreisschwingantriebes einschließt, der zwischen 0° und 60° liegt, derart, dass aufgrund der durch die Schrägstellung des Mahlbechers im Verhältnis zur Bewegungsebene des Kreisschwingantriebes bedingten Bewegungsbahnen der Mahlkörper im Mahlbecher die stirnseitigen Mahlbecherböden als Anschlag- und Mahlfläche in den Zerkleinerungsvorgang mit einbezogen sind. Mit der Erfindung ist der Vorteil verbunden, dass einerseits während des Mahlvorganges eine periodische Bewegungskomponente auf die Mahlkörper in Richtung der Außenwand des Mahlbechers einwirkt, während anderseits aufgrund der Schrägstellung des Mahlbechers zur Bewegungsebene des Kreisschwingantriebes eine andere, weitere Bewegungskomponente in Richtung der Längsachse des Mahlbechers auf die Mahlkörper wirkt. Dadurch wird erreicht, dass während der Bewegung der Mahlkörper an der Außenwand des Mahlbechers eine vorwiegend reibende Beanspruchung und beim Auftreffen der Mahlkörper auf die stirnseitigen Mahlbecherböden eine Prallbeanspruchung des Mahlgutes erfolgt. Gleichzeitig wird aufgrund der Bewegung der Mahlkörper in Längsrichtung des Mahlraumes auch das Mahlgut besser durchmischt, so dass alle Partikel des Mahlgutes gleichzeitig beansprucht werden und so die Zerkleinerungseffizienz gesteigert wird.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.
Nach einem Ausführungsbeispiel der Erfindung ist zur weiteren Verbesserung der Zerkleinerungseffizienz ein dreidimensional wirkender Antrieb mit einer zusätzlichen, senkrecht zur Ebene der Kreisschwingbewegung auf den Mahlbecher einwirkenden Bewegungskomponente vorgesehen. Hierdurch wird die auf die Mahlkörper einwirkende Bewegungskomponente in Richtung auf die Mahlbecherböden zu verstärkt. Soweit vorgesehen ist, dass die Längsachse des Mahlbechers einen Winkel mit der Bewegungsebene des Kreisschwingantriebes einschließen soll, können bei einem dreidimensional wirkenden Antrieb jeweils zwei Bewegungsrichtungen der dreidimensionalen Anregung eine Bewegungsebene als Bezug für die Schrägstellung des Mahlbechers bilden.According to one embodiment of the invention, 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. As a result, the force acting on the grinding body movement component is reinforced in the direction of the Mahlbecherböden. As far as it is provided that 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.
Um ein optimales Mahlergebnis mit möglichst hoher Endfeinheit des Mahlgutes zu erhalten, ist nach einem Ausführungsbeispiel die Länge des Mahlbechers auf die Schwingintensität abzustimmen, die durch die jeweils eingestellte Schwingweite des Antriebs und dessen Frequenz definiert ist, wobei die Länge des Mahlbechers im einzelnen so zu bemessen ist, dass die kinetische Energie der auf die stirnseitigen Mahlbecherböden auftreffenden Mahlkörper maximal ist. Vorzugsweise beträgt das Verhältnis der Schwingweite des Antriebes zur Länge des Mahlbechers je nach der Größe der verwendeten Mahlkörper zwischen 0,3 und 1,6.In order to obtain an optimum grinding result with the highest possible final fineness of the ground material, according to one embodiment, 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. Preferably, 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.
Nach einem Ausführungsbeispiel der Erfindung ist vorgesehen, dass der Antrieb verstellbare Schwingungsfrequenzen aufweist. Weiterhin kann vorgesehen sein, dass der Antrieb verstellbare Schwingungsamplituden aufweist.According to one embodiment of the invention, it is provided that the drive has adjustable oscillation frequencies. Furthermore, it can be provided that the drive has adjustable oscillation amplitudes.
Hinsichtlich der Ausbildung eines Kreisschwingantriebes ist nach einem Ausführungsbeispiel der Erfindung vorgesehen, dass der Antrieb als Planetenantrieb mit einem Übersetzungsverhältnis k = 1: -1 ausgebildet ist, wie ein solcher Antrieb aus dem gattungsbildenden Stand der Technik bekannt ist.With regard to the formation of a circular oscillating drive is provided according to an embodiment of the invention that the drive is designed as a planetary drive with a transmission ratio k = 1: -1, as such a drive from the generic state of the art is known.
Die Erfindung lässt sich jedoch auch bei anderen Arten von Kreisschwingantrieben einsetzen. So ist nach einem Ausführungsbeispiel der Erfindung vorgesehen, dass der Antrieb als unwuchterregter Schwingantrieb ausgerichtet ist.However, the invention can also be used in other types of circular oscillating drives. Thus, according to one embodiment of the invention, it is provided that the drive is aligned as an unbalanced oscillating drive.
Weiterhin kann nach alternativen Ausführungsbeispielen der Erfindung der Antrieb als zyklisch arbeitender oder auch als nicht zyklisch arbeitender Schwingantrieb ausgebildet sein.Furthermore, according to alternative embodiments of the invention, the drive may be designed as a cyclically operating or as a non-cyclically operating oscillating drive.
In an sich bekannter Weise kann vorgesehen sein, dass die Mahlkörper als Kugeln ausgebildet sind.In a conventional manner can be provided that the grinding media are formed as balls.
Nach einem Ausführungsbeispiel der Erfindung kann vorgesehen sein, dass der den Querschnitt des Mahlbechers festlegende größte Abstand zwischen zwei einander gegenüberliegenden Wandbereichen kleiner als die senkrecht zur Querschnittsfläche bestimmte Länge des Mahlbechers ist.According to one embodiment of the invention, it can be provided that 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.
Soweit die Erfindung sich auf den Einsatz von längserstreckten Mahlbechern mit jeweils angeordneten stirnseitigen Mahlbecherböden bezieht, ist die Anwendung der Erfindung auf allseits rotationssymetrische Mahlbecher nicht sinnvoll. So muss die bei der Längserstreckung des Mahlbechers gegebene Länge und damit der Abstand zwischen den Mahlbecherböden jedenfalls größer sein als der Durchmesser des zwischen den Mahlbecherböden liegenden Bereichs. In diesem Rahmen lässt sich die Erfindung bei unterschiedlichen Mahlbecherformen verwirklichen. So kann vorgesehen sein, dass der Mahlbecher einen kreisförmigen Querschnitt oder einen elliptischen Querschnitt oder einen eckigen Querschnitt mit abgerundeten Eckbereichen hat, wobei bei letztgenanntem Ausführungsbeispiel die abgerundeten Eckbereiche des Mahlbechers einen Radius entsprechend dem Radius der Mahlkörper aufweisen. Andere Mahlbecherformen sind ebenfalls möglich.Insofar as 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. Thus, the length given in the longitudinal extension of the grinding bowl and thus the distance between the Mahlbecherböden anyway larger than the diameter of the area lying between the Mahlbecherböden. In this context, the invention can be realized in different Mahlbecherformen. Thus, it can be provided that 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.
Weiterhin kann vorgesehen sein, dass die stirnseitigen Mahlbecherböden des Mahlbechers eben ausgebildet sind, so dass sich beispielsweise bei einen kreisförmigen Querschnitt aufweisenden Mahlbechern eine zylindrische Ausbildung der Mahlbecher ergibt.Furthermore, it can be provided that 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.
Alternativ kann vorgesehen sein, dass die stirnseitigen Mahlbecherböden des Mahlbechers kalottenförmig ausgebildet sind.Alternatively, it can be provided that the end-side Mahlbecherböden the Mahlbechers are formed dome-shaped.
Es versteht sich, dass in einer Laborschwingmühle bei Verwirklichung der Erfindung mehrere Mahlbecher in an sich bekannter Weise eingespannt sein können.It is understood that in a laboratory vibrating mill in realizing the invention, several grinding bowls can be clamped in a conventional manner.
In der Zeichnung sind Ausführungsbeispiele der Erfindung wiedergegeben, welche nachstehend beschrieben sind. Es zeigen:
- Fig. 1
- Eine mit einem Planetenantrieb versehene Laborschwingmühle mit schräg gestelltem Mahlbecher in einer teilweise geschnittenen Seitenansicht,
- Fig. 2
- eine einen unwuchterregten Antrieb aufweisende Laborschwingmühle in einer Darstellung gemäß
.Figur 1
- Fig. 1
- A provided with a planetary drive laboratory vibratory mill with inclined Mahlbecher in a partially sectioned side view,
- Fig. 2
- a laboratory vibratory mill having an unattenuated drive in a representation according to
FIG. 1 ,
Bei der in
Das in
Wie nicht weiter dargstellt, kann auch vorgesehen sein, dass der Antrieb eine zusätzliche, senkrecht zur Ebene 20 der Kreisschwingbewegung auf den Mahlbecher 8 einwirkende Bewegungskomponente erzeugt, so dass der Antrieb entsprechend mit einer dreidimensionalen Einwirkung ausgelegt ist.As is not further illustrated, it can also be provided that the drive generates an additional component of motion acting on the
Claims (18)
- Laboratory vibration grinding mill having an at least two-dimensionally acting circular vibration drive and having at least one holder for an elongate grinding cup clamped therein, which grinding cup has a filling of grinding bodies and is provided with end grinding cup bases, characterized in that the holder (9) for the grinding cup (8) is designed in such a way that the longitudinal axis (L) of the grinding cup (8) encloses an angle, which is between 0° and 60°, with a movement plane (20) of the circular vibration drive (10), in such a way that, owing to the movement paths of the grinding bodies in the grinding cup (8) caused by the inclined position of the grinding cup (8) in relation to the movement plane of the circular vibration drive (10), the end grinding cup bases are incorporated into the comminution process as abutment and grinding surfaces.
- Laboratory vibration grinding mill according to Claim 1, characterized in that a three-dimensionally acting drive having an additional movement component acting on the grinding cup (8) perpendicularly to the plane (20) of the circular vibration movement is provided.
- Laboratory vibration grinding mill according to Claim 1 or 2, characterized in that the length of the grinding cup (8) is dimensioned by setting the vibration intensity such that the kinetic energy of the grinding bodies striking the end grinding cup bases is at a maximum.
- Laboratory vibration grinding mill according to Claim 3, characterized in that the ratio of the vibration excursion of the drive (10) to the length of the grinding cup (8) is between 0.3 and 16.
- Laboratory vibration grinding mill according to one of Claims 1 to 4, characterized in that the drive (10) has adjustable vibration frequencies.
- Laboratory vibration grinding mill according to one of Claims 1 to 5, characterized in that the drive (10) has adjustable vibration amplitudes.
- Laboratory vibration grinding mill according to one of Claims 1 to 6, characterized in that the drive (10) is designed as a planetary drive having a transmission ratio k = 1: -1.
- Laboratory vibration grinding mill according to one of Claims 1 to 7, characterized in that the drive (10) is designed as a vibrating drive which is excited by an unbalance.
- Laboratory vibration grinding mill according to one of Claims 1 to 8, characterized in that the drive (10) is designed as a cyclically operating vibrating drive.
- Laboratory vibration grinding mill according to one of Claims 1 to 8, characterized in that the drive (10) is designed as a non-cyclically operating vibrating drive.
- Laboratory vibration grinding mill according to one of Claims 1 to 10, characterized in that the grinding bodies take the form of balls.
- Laboratory vibration grinding mill according to one of Claims 1 to 11, characterized in that the largest distance, defining the cross section of the grinding cup (8), between two mutually opposite wall regions is smaller than the length of the grinding cup (8) determined perpendicularly to the cross-sectional area.
- Laboratory vibration grinding mill according to one of Claims 1 to 12, characterized in that the grinding cup (8) has a circular cross section.
- Laboratory vibration grinding mill according to one of Claims 1 to 12, characterized in that the grinding cup (8) has an elliptical cross section.
- Laboratory vibration grinding mill according to one of Claims 1 to 12, characterized in that the grinding cup (8) has an angular cross section with rounded corner regions.
- Laboratory vibration grinding mill according to Claim 15, characterized in that the rounded corner regions of the grinding cup (8) have a radius corresponding to the radius of the grinding bodies.
- Laboratory vibration grinding mill according to one of Claims 13 to 16, characterized in that the end grinding cup bases of the grinding cup (8) are designed to be planar.
- Laboratory vibration grinding mill according to one of Claims 13 to 16, characterized in that the end grinding cup bases of the grinding cup (8) are designed to be dome-shaped.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102007032893 | 2007-07-14 | ||
PCT/EP2008/005707 WO2009026990A1 (en) | 2007-07-14 | 2008-07-12 | Laboratory vibration grinding mill having inclined grinding beakers |
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EP2170518A1 EP2170518A1 (en) | 2010-04-07 |
EP2170518B1 true EP2170518B1 (en) | 2015-09-09 |
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EP08784741.4A Active EP2170518B1 (en) | 2007-07-14 | 2008-07-12 | Laboratory vibration grinding mill having inclined grinding beakers |
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US (1) | US8042754B2 (en) |
EP (1) | EP2170518B1 (en) |
JP (1) | JP5464499B2 (en) |
CN (1) | CN101743066B (en) |
RU (1) | RU2477660C2 (en) |
WO (1) | WO2009026990A1 (en) |
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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 (en) * | 2012-03-19 | 2014-01-15 | 扬州大学 | Small-size direct-current variable-speed ball mill |
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2008
- 2008-07-12 CN CN2008800247312A patent/CN101743066B/en active Active
- 2008-07-12 US US12/669,152 patent/US8042754B2/en active Active
- 2008-07-12 JP JP2010516408A patent/JP5464499B2/en active Active
- 2008-07-12 RU RU2010100348/13A patent/RU2477660C2/en not_active IP Right Cessation
- 2008-07-12 EP EP08784741.4A patent/EP2170518B1/en active Active
- 2008-07-12 WO PCT/EP2008/005707 patent/WO2009026990A1/en active Application Filing
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DE102013111934B4 (en) * | 2012-10-31 | 2018-01-04 | Denso Corporation | centrifugal ball |
Also Published As
Publication number | Publication date |
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EP2170518A1 (en) | 2010-04-07 |
JP2010533577A (en) | 2010-10-28 |
US8042754B2 (en) | 2011-10-25 |
US20100181402A1 (en) | 2010-07-22 |
WO2009026990A1 (en) | 2009-03-05 |
JP5464499B2 (en) | 2014-04-09 |
CN101743066A (en) | 2010-06-16 |
CN101743066B (en) | 2011-11-16 |
RU2477660C2 (en) | 2013-03-20 |
RU2010100348A (en) | 2011-08-20 |
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