EP1854533A1 - Shaker - Google Patents

Shaker Download PDF

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Publication number
EP1854533A1
EP1854533A1 EP07005711A EP07005711A EP1854533A1 EP 1854533 A1 EP1854533 A1 EP 1854533A1 EP 07005711 A EP07005711 A EP 07005711A EP 07005711 A EP07005711 A EP 07005711A EP 1854533 A1 EP1854533 A1 EP 1854533A1
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EP
European Patent Office
Prior art keywords
lever
axis
weight
rotation
centrifugal force
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EP07005711A
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German (de)
French (fr)
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EP1854533B1 (en
Inventor
Hawrylenko Alexander
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Infors AG
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Infors AG
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Priority claimed from DE102006021851A external-priority patent/DE102006021851A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/20—Mixing the contents of independent containers, e.g. test tubes
    • B01F31/22—Mixing the contents of independent containers, e.g. test tubes with supporting means moving in a horizontal plane, e.g. describing an orbital path for moving the containers about an axis which intersects the receptacle axis at an angle

Definitions

  • the invention relates to a generic shaking device according to the preamble of the main claim, namely such a shaking device with a -im operating in a horizontal plane- a circular shaking exporting tray, on its upper side at least one to be shaken liquid containing container is provided in its common center of gravity a first centrifugal force causing a tilting moment arises, with a rotary drive, with a rotatable about a rotational axis at a certain angular velocity, via an axis parallel to this bearing bearing on the underside of the tray arranged above it, having a crank eccentric, with one of the underside of the tray arranged above a first distance having and extending at an angle to the axis of rotation extending first lever arm of the eccentric lever having a first lever distance from the axis of rotation, with one from the bottom of the tray arranged above a second Distance having and extending at an angle to the axis of rotation extending in a neutral plane second lever arm having at its end a second lever distance from the rotation
  • Such a generic shaking device is known ( DE 18 16 710 ).
  • a counterweight to compensate for the imbalance resulting from the eccentricity is attached, is still the third weight below the second weight and diametrically arranged in the generic shaking device to this.
  • the shaking table is mounted on four, the same eccentricity as the driving central pin having eccentric pin, whereby the weight of the container is already compensated in this respect.
  • the invention has the object of providing a generic shaking device according to the preamble of the main claim so that the vibration during the shaking operation are largely avoided.
  • the mass of the third weight is such that caused by a consequently caused third centrifugal force and their second distance from the neutral plane a -beück- with respect to the tilting moments occurring in the known Scierelvorraumen- equal, but oppositely directed further overturning moment, which the two tilting moments completely cancel each other out.
  • the weight of the tray, its flange, the liquid and the container are also dimensioned to be the same size as the sum of the first centrifugal force, the second centrifugal force and the third centrifugal force, the result is surprisingly simple the advantage that the shaker runs absolutely vibration-free at all speeds.
  • a shaking device with a tray is provided in a surprisingly simple manner, that is, in the shaking mode can be operated virtually unbalance.
  • the weights at the end of each lever arm can be adjusted, with respect to the distance of the resulting movement plane of the neutral plane and / or the lever distance from the axis of rotation, as claimed in the subclaims.
  • a particularly simple and compact embodiment of the invention results when the first lever arm is extended beyond the bearing for the tray located on the upper side of the neutral plane beyond the third lever arm with simultaneous cranking downward and at its end has the third weight whose center of gravity on the lower side of the neutral plane with the second distance from this in a plane parallel thereto with the third lever distance from the rotation axis rotates.
  • the generally designated 1 shaking device has the reproduced embodiment in plan view a circular, flat tray 2 for receiving -on its top 21- a single, filled with a liquid to be shaken 3, symmetrically arranged on the tray and there container 4.
  • the shaking device 1 is further provided with a rotary drive 5, the one of the bottom 22 of the tray 2 facing eccentric lever 7 to a Rotary axis 6 at a certain constant angular velocity in the one direction of rotation in a neutral plane 73 rotates.
  • the eccentric lever 7 has a first lever arm 71, which is arranged at a first distance 79 from the tray 2 and extends at right angles to the axis of rotation 6.
  • first lever arm 71 of the eccentric lever 7 is on the underside 22 of the tray 2 side facing this in a first lever spacing 74 a to the axis of rotation 6 parallel axis 91 bearing 9 is provided, to which a at the bottom 22 of the Tablars fixed flange 23 connects.
  • the tray 2 is thereby moved in the other direction with the amount of the same angular velocity to produce a circular shaking motion.
  • the first lever arm 71 of the two-armed eccentric lever 7 has a diametrically opposite the axis of rotation 6 opposite second lever arm 72, at its end in shaking the shaker 1 in a second distance 80 from the neutral plane 73 with a second lever spacing 75 of the rotation axis 6 circulating second weight 82 is arranged with its center of gravity.
  • this first centrifugal force 11 is statically caused by a due to the mass of the weight 82, the amount equal in magnitude, but oppositely directed second Centrifugal force compensated 12, for which purpose the second lever spacing 75 and the size of the second weight 82 are dimensioned accordingly.
  • this static balancing acts the second centrifugal force 12 in the neutral plane 73, whereas the first centrifugal force 11 to this neutral plane 73 has a distance 78, resulting in a tilting moment 14 results, which brings the shaker in operation to violent vibration, which is undesirable.
  • the first lever arm 71 is extended beyond the bearing 9 for the tray 2 located on the upper side of the neutral plane 73 as the third downwardly cranked lever 70 and has at its end a third weight 81, its center of gravity the lower side of the neutral plane 73 rotates at a second distance 77 therefrom in a plane parallel thereto with a third lever spacing 76 from the axis of rotation 6, for which purpose the first lever arm 71 is bent away in the direction away from the tray.
  • the mass of the third weight 81 of the second distance 77 and the third lever spacing 76 are dimensioned such that a further tilting moment 15 of equal magnitude but oppositely directed is produced by the third centrifugal force 13 caused by the tilting moment 14, as a result of which the two tilting moments cancel.
  • the inventive shaking device 1 runs absolutely vibration-free.
  • the third weight 81 disposed at the end of the third lever arm 70 can be an adjustment device for changing both the lever distance (75 or 76) from the rotation axis 6 and for changing the distance 80 and 77 of the neutral plane 73, so that the different high positions as distance 78 from the neutral plane 73 of the common center of gravity 31 in different containers 4 and degrees of filling of the liquid 31 and on the weight of the container 4 and its liquid to be shaken 3 can be reacted.

Abstract

A laboratory mechanical shaking assembly has a moving tray for a container holding a liquid sample. The tray lower surface engages via an interface with a cranked rotor arm having a mass balance at each end. The cranked arm rotates about a point that is off-center and separated from the tray center by a distance (74).

Description

Die Erfindung betrifft eine gattungsgemässe Schüttelvorrichtung nach dem Oberbegriff des Hauptanspruchs, nämlich eine solche Schüttelvorrichtung mit einem -im Betrieb in einer waagrechten Ebene- eine kreisende Schüttelbewegung ausführenden Tablar, auf dessen Oberseite zumindest ein eine zu schüttelnde Flüssigkeit aufweisendes Behältniss vorgesehenen ist, in dessen gemeinsamen Schwerpunkt eine ein Kippmoment bewirkendene erste Fliehkraft entsteht, mit einem Drehantrieb, mit einem von diesem mit einer bestimmten Winkelgeschwindigkeit um eine Drehachse drehbaren, über ein eine zu dieser parallel verlaufende Achse aufweisendes Lager an der Unterseite des darüber angeordneten Tablars angreifenden, eine Kröpfung aufweisenden Exzenterhebel, mit einem von der Unterseite des darüber angeordneten Tablars einen ersten Abstand aufweisenden sowie sich winklig zu der Drehachse verlaufenden ersten Hebelarm des Exzenterhebels, der einen ersten Hebelabstand von der Drehachse aufweist, mit einem von der Unterseite des darüber angeordneten Tablars einen zweiten Abstand aufweisenden sowie sich winklig zu der Drehachse erstreckenden, in einer Neutralebene umlaufenden zweiten Hebelarm, der an seinem Ende ein mit einem zweiten Hebelabstand von der Drehachse umlaufendes, eine bezüglich der ersten Fliehkraft entgegengesetzt gerichtete zweite Fliehkraft an seinem Schwerpunkt bewirkendes zweites Gewicht aufweist, mit einem von der Unterseite des darüber angeordneten Tablars einen dritten Abstand aufweisenden sowie winklig zu der Drehachse verlaufenden dritten Hebelarm, der an seinem Ende ein mit einen dritten Hebelabstand von der Drehachse umlaufendes, eine bezüglich der zweiten Fliehkraft entgegengesetzt gerichtete dritte Fliehkraft an seinem Schwerpunkt bewirkendes drittes Gewicht aufweist, wobei die Kröpfung des Exzenterhebels sowie alle Hebelarme und somit der gemeinsame Schwerpunkt sowie die beiden Schwerpunkte des zweiten Gewichtes sowie des dritten Gewichtes in einer durch die Drehachse hindurchgehenden Vertikalebene liegen und im Schüttelbetrieb mit derselben Winkelgeschwindigkeit drehbar sind und wobei der gemeinsame Schwerpunkt und der Schwerpunkt des dritten Gewichtes auf verschiedenen Seiten der Neutralebene, bezüglich des zweiten Hebelabstand auf auf der diametral gegenüberliegenden anderen Seite der Drehachse angeordnet sind.The invention relates to a generic shaking device according to the preamble of the main claim, namely such a shaking device with a -im operating in a horizontal plane- a circular shaking exporting tray, on its upper side at least one to be shaken liquid containing container is provided in its common center of gravity a first centrifugal force causing a tilting moment arises, with a rotary drive, with a rotatable about a rotational axis at a certain angular velocity, via an axis parallel to this bearing bearing on the underside of the tray arranged above it, having a crank eccentric, with one of the underside of the tray arranged above a first distance having and extending at an angle to the axis of rotation extending first lever arm of the eccentric lever having a first lever distance from the axis of rotation, with one from the bottom of the tray arranged above a second Distance having and extending at an angle to the axis of rotation extending in a neutral plane second lever arm having at its end a second lever distance from the rotation axis rotating, with respect to the first centrifugal oppositely directed second centrifugal force at its center of gravity causing second weight, with a from the bottom of the tray arranged above a third distance and extending at an angle to the axis of rotation extending third lever arm having at its end a third lever spaced from the rotation axis, with respect to the second centrifugal oppositely directed third centrifugal force at its center of gravity causing third weight wherein the crank of the eccentric lever and all lever arms and thus the common center of gravity and the two centers of gravity of the second weight and the third weight lie in a vertical plane passing through the axis of rotation and in the chute Operation are rotatable at the same angular velocity and wherein the common center of gravity and the center of gravity of the third weight are arranged on different sides of the neutral plane, with respect to the second lever spacing on the diametrically opposite other side of the axis of rotation.

Eine solche gattungsgemässe Schüttelvorrichtung ist bekannt ( DE 18 16 710 ). Im Gegensatz zu einer anderen bekannten Schüttelvorrichtung (z.B. DE 33 19 574 C2 ), bei der an einem der vorgesehenen Lager in dem Schwerpunkt des Schüttelgutträgers (ggf. mit den Behältnissen für die zu schüttelnde Flüssigkeit) ein Gegengewicht zur Kompensation der durch die Exzentrizität enstehenden Unwucht angebracht wird, wird bei der gattungsgemässen Schüttelvorrichtung noch das dritte Gewicht unterhalb des zweiten Gewichts und diametral zu diesem angeordne. Der Schütteltisch ist auf vier, dieselbe Exzentrizität wie der antreibende mittlere Zapfen aufweisende exzentrischen Zapfen gelagert, wodurch das Gewicht des Behältnisses insoweit schon kompensiert ist. Um selbst bei fehlender Verankerung besser reproduzierbare Schüttelergebnisse zu erhalten und das Wandern des Unterbaus kompensieren zu können, wird bei der gattungsgemässen Schüttelvorrichtung vorgeschlagen, im Abstand unterhalb des zweiten Gewichts das demgegenüber mit geringerer Masse versehene, diametral gegenüberliegende dritte Gewicht vorzusehen, wodurch um eine waagrechte Achse auftretende Kippkräfte im Schüttelbetrieb weitgehend mit der Folge vermieden werden sollen, dass bei Ausführung des Unterbaus mit erheblicher Masse auf eine Verankerung der Schüttelvorrichtung verzichtete werden kann.Such a generic shaking device is known ( DE 18 16 710 ). In contrast to another known shaking device (eg DE 33 19 574 C2 ), in which at one of the provided bearings in the center of gravity of the Schüttelgutträgers (possibly with the containers for the liquid to be shaken) a counterweight to compensate for the imbalance resulting from the eccentricity is attached, is still the third weight below the second weight and diametrically arranged in the generic shaking device to this. The shaking table is mounted on four, the same eccentricity as the driving central pin having eccentric pin, whereby the weight of the container is already compensated in this respect. In order to obtain better reproducible shaking even in the absence of anchoring and to compensate for the wandering of the substructure, it is proposed in the generic shaking device to provide at a distance below the second weight of the contrast provided with lesser mass, diametrically opposed third weight, thereby about a horizontal axis occurring tilting forces in shaking operation should be largely avoided with the result that can be waived in carrying out the substructure with considerable mass on an anchoring of the shaker.

Von Nachteil bei dieser gattungsgemässen Schüttelvorrichtung ist das infolge des eine erhebliche Masse umfassenden Unterbaus hohe Gewicht, was zu einer eingeschränkten Transportabilität und wegen der letztlich doch noch vorhandenen Kippmomente zu einer Unwucht der bekannten Schüttelvorrichtung führt, welche die Schüttelvorrichtung im Betrieb zum heftigen Vibrieren bringt, was aus naheliegenden Gründen in hohem Masse unerwünscht ist.A disadvantage of this generic shaking that is due to the considerable mass comprehensive substructure high weight, resulting in limited transportability and because of the ultimately still existing tilting moments to an imbalance of the known shaker, which brings the shaker in operation for violent vibration, which is highly undesirable for obvious reasons.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemässe Schüttelvorrichtung nach dem Oberbegriff des Hauptanspruchs so weiterzubilden, dass die während des Schüttelbetriebes Vibrationen weitestgehend vermieden werden.The invention has the object of providing a generic shaking device according to the preamble of the main claim so that the vibration during the shaking operation are largely avoided.

Diese Aufgabe wird bei einer gattungsgemässen Schüttelvorrichtung nach dem Oberbegriff des Hauptanspruchs erfindungsgemäss durch dessen kennzeichnende Merkmale, also dadurch gelöst, dass die Masse des zweiten Gewichtes und der zweite Hebelabstand so bemessen sind, dass die dadurch bewirkte zweite Fliehkraft dem Betrage nach gleich gross wie die Summe von der ersten Fliehkraft sowie der dritten Fliehkraft ist und dass die Masse des dritten Gewichtes und der dritte Hebelabstand sowie der dritte Abstand von der Neutralebene so bemessen sind, dass das dadurch bewirkte weitere Kippmoment bezüglich des Kippmoments gleich gross, aber entgegengesetzt gerichtet ist.This object is achieved in a generic shaking device according to the preamble of the main claim according to the invention by its characterizing features, so that the mass of the second weight and the second lever spacing are dimensioned so that the second centrifugal force caused by the amount equal to the sum is of the first centrifugal force and the third centrifugal force and that the mass of the third weight and the third lever spacing and the third distance from the neutral plane are dimensioned so that the resulting additional tilting moment with respect to the overturning moment is the same size, but oppositely directed.

Nach Lehre der Erfindung wird hierbei die Masse des dritten Gewichtes so bemessen, dass durch eine infolgedessen bewirkte dritte Fliehkraft und deren zweitem Abstand von der Neutralebene ein -bezüglich des bei den bekannten Schüttelvorrichtungen auftretenden Kippmoments- gleich grosses, aber entgegengesetzt gerichtetes weiteres Kippmoment entsteht, wodurch sich die beiden Kippmomente vollständig aufheben. Bemisst man überdies bei gegebenem Gewicht des Tablars, dessen Flansches, der Flüssigkeit und des Behältnisses die Grösse der beiden Gewichte so, dass die Summe der ersten Fliehkraft, der zweiten Fliehkraft und der dritten Fliehkraft zu Null wird, so ergibt sich erfindungsgemäss in überraschend einfacher Weise der Vorteil, dass die Schüttelvorrichtung bei allen Drehzahlen absolut vibrationsfrei läuft. Mit der Erfindung wird also in überraschend einfacher Weise eine Schüttelvorrichtung mit einem Tablar bereitgestellt, die im Schüttelbetrieb also praktisch unwuchtfrei betrieben werden kann.According to the teaching of the invention, in this case the mass of the third weight is such that caused by a consequently caused third centrifugal force and their second distance from the neutral plane a -beück- with respect to the tilting moments occurring in the known Schüttelvorrichtungen- equal, but oppositely directed further overturning moment, which the two tilting moments completely cancel each other out. If the weight of the tray, its flange, the liquid and the container are also dimensioned to be the same size as the sum of the first centrifugal force, the second centrifugal force and the third centrifugal force, the result is surprisingly simple the advantage that the shaker runs absolutely vibration-free at all speeds. Thus, with the invention, a shaking device with a tray is provided in a surprisingly simple manner, that is, in the shaking mode can be operated virtually unbalance.

In vorteilhafter Weiterbildung der Erfindung können die Gewichte am Ende jedes Hebelarmes verstellbar sein, und zwar hinsichtlich des Abstandes der daraus resultierenden Bewegungsebene von der Neutralebene und/oder des Hebelabstandes von der Drehachse, wie das in den Unteransprüchen beansprucht ist.In an advantageous embodiment of the invention, the weights at the end of each lever arm can be adjusted, with respect to the distance of the resulting movement plane of the neutral plane and / or the lever distance from the axis of rotation, as claimed in the subclaims.

Eine besonders einfache und kompakte Ausführungsform der Erfindung ergibt sich, wenns der erste Hebelarm über das Lager für das auf der oberen Seite der Neutralebene befindliche Tablar hinaus als dritter Hebelarm unter gleichzeitiger Kröpfung nach unten verlängert ist und an seinem Ende das dritte Gewicht aufweist, dessen Schwerpunkt auf der unteren Seite der Neutralebene mit dem zweiten Abstand von dieser in einer dazu parallelen Ebene mit dem dritten Hebelabstand von der Drehachse umläuft.A particularly simple and compact embodiment of the invention results when the first lever arm is extended beyond the bearing for the tray located on the upper side of the neutral plane beyond the third lever arm with simultaneous cranking downward and at its end has the third weight whose center of gravity on the lower side of the neutral plane with the second distance from this in a plane parallel thereto with the third lever distance from the rotation axis rotates.

Ein bevorzugtes Ausführungsbeispiel Ausführungsbeispiel der Erfindung wird nachfolgend unter Bezugnahme auf die Zeichnung näher erläutert, die eine schematische Seitenansicht zeigt.A preferred embodiment of the invention will be explained in more detail below with reference to the drawing, which shows a schematic side view.

Die insgesamt mit 1 bezeichnete Schüttelvorrichtung weist beim wiedergegebenen Ausführungsbeispiel ein in Draufsicht kreisrundes, ebenes Tablar 2 zur Aufnahme -auf seiner Oberseite 21- eines einzigen, mit einer zu schüttelnden Flüssigkeit 3 gefüllten, symmetrisch auf dem Tablar angeordneten und dort festgelegten Behältnisses 4 auf.The generally designated 1 shaking device has the reproduced embodiment in plan view a circular, flat tray 2 for receiving -on its top 21- a single, filled with a liquid to be shaken 3, symmetrically arranged on the tray and there container 4.

Die Schüttelvorrichtung 1 ist ferner mit einem Drehantrieb 5 versehen, der einen der Unterseite 22 des Tablars 2 zugewandten Exzenterhebel 7 um eine Drehachse 6 mit einer bestimmten, konstanten Winkelgeschwindigkeit in die eine Drehrichtung in einer Neutralebene 73 dreht. Der Exzenterhebel 7 weist einen mit einem ersten Abstand 79 von dem Tablar 2 angeordneten ersten Hebelarm 71 auf, der rechtwinklig zu der Drehachse 6 verläuft.The shaking device 1 is further provided with a rotary drive 5, the one of the bottom 22 of the tray 2 facing eccentric lever 7 to a Rotary axis 6 at a certain constant angular velocity in the one direction of rotation in a neutral plane 73 rotates. The eccentric lever 7 has a first lever arm 71, which is arranged at a first distance 79 from the tray 2 and extends at right angles to the axis of rotation 6.

Auf dem ersten Hebelarm 71 des Exzenterhebels 7 ist auf der der Unterseite 22 des Tablars 2 zugewandten Seite für dieses in einem ersten Hebelabstand 74 ein eine zu der Drehachse 6 parallel verlaufende Achse 91 aufweisendes Lager 9 vorgesehen, an das sich ein an der Unterseite 22 des Tablars festgelegter Flansch 23 anschliesst. Das Tablar 2 wird dabei in der anderen Drehrichtung mit dem Betrage nach derselben Winkelgeschwindigkeit zur Erzeugung einer kreisenden Schüttelbewegung bewegt.On the first lever arm 71 of the eccentric lever 7 is on the underside 22 of the tray 2 side facing this in a first lever spacing 74 a to the axis of rotation 6 parallel axis 91 bearing 9 is provided, to which a at the bottom 22 of the Tablars fixed flange 23 connects. The tray 2 is thereby moved in the other direction with the amount of the same angular velocity to produce a circular shaking motion.

Der erste Hebelarm 71 des zweiarmig ausgebildeten Exzenterhebels 7 weist einen diametral bezüglich der Drehachse 6 gegenüberliegenden zweiten Hebelarm 72 auf, an dessen Ende im Schüttelbetrieb der Schüttelvorrichtung 1 in einen zweiten Abstand 80 von der Neutralebene 73 ein mit einem zweiten Hebelabstand 75 von der Drehachse 6 umlaufendes zweites Gewicht 82 mit seinem Schwerpunkt angeordnet ist.The first lever arm 71 of the two-armed eccentric lever 7 has a diametrically opposite the axis of rotation 6 opposite second lever arm 72, at its end in shaking the shaker 1 in a second distance 80 from the neutral plane 73 with a second lever spacing 75 of the rotation axis 6 circulating second weight 82 is arranged with its center of gravity.

Im gemeinsamen Schwerpunkt 31 des Tablars 2, dessen Flansches 23, des Lages 9, der Flüssigkeit 3 und des Behältnisses 4 entsteht eine erste Fliehkraft 11.In the common center of gravity 31 of the tray 2, the flange 23, the layer 9, the liquid 3 and the container 4, a first centrifugal force 11 is formed.

Bei der Schüttelvorrichtung 1 wird diese erste Fliehkraft 11 statisch durch eine aufgrund der Masse des Gewichtes 82 bewirkte, dem Betrage nach gleich grosse, aber entgegengesetzt gerichtete zweite Fliehkraft 12 kompensiert, wozu der zweite Hebelabstand 75 und die Grösse des zweiten Gewichtes 82 entsprechend dimensioniert werden. Trotz dieser statischen Auswuchtung wirkt die zweite Fliehkraft 12 in der Neutralebene 73, wohingegen die erste Fliehkraft 11 zu dieser Neutralebene 73 einen Abstand 78 aufweist, woraus ein Kippmoment 14 resultiert, welches die Schüttelvorrichtung im Betrieb zum heftigen Vibrieren bringt, was unerwünscht ist.In the shaking device 1, this first centrifugal force 11 is statically caused by a due to the mass of the weight 82, the amount equal in magnitude, but oppositely directed second Centrifugal force compensated 12, for which purpose the second lever spacing 75 and the size of the second weight 82 are dimensioned accordingly. Despite this static balancing acts the second centrifugal force 12 in the neutral plane 73, whereas the first centrifugal force 11 to this neutral plane 73 has a distance 78, resulting in a tilting moment 14 results, which brings the shaker in operation to violent vibration, which is undesirable.

Nach Lehre der Erfindung ist der erste Hebelarm 71 über das Lager 9 für das auf der oberen Seite der Neutralebene 73 befindliche Tablar 2 hinaus als dritter -nach unten gekröpfter- Hebel 70 verlängert und weist an seinem Ende ein drittes Gewicht 81 auf, dessen Schwerpunkt auf der unteren Seite der Neutralebene 73 mit einem zweiten Abstand 77 von dieser in einer dazu parallelen Ebene mit einem dritten Hebelabstand 76 von der Drehachse 6 umläuft, wozu der erste Hebelarm 71 in Richtung von dem Tablar weg gekröpft ist. Es werden hierbei die Masse des dritten Gewichtes 81 der zweite Abstand 77 und der dritte Hebelabstand 76 so bemessen, dass durch die infolgedessen bewirkte dritte Fliehkraft 13 ein zu dem Kippmoment 14 gleich grosses, aber entgegengesetzt gerichtetes weiteres Kippmoment 15 entsteht, wodurch sich die beiden Kippmomente aufheben. Bemisst man überdies bei gegebenem Gewicht des Tablars 2, dessen Flansches 23, des Lages 9, der Flüssigkeit 3 und des Behältnisses 4 die Grösse der Gewichte 81 und 82 so, dass die Summe der ersten Fliehkraft 11, der zweiten Fliehkraft 12 und der dritten Fliehkraft 13 zu Null wird, so läuft die erfindungsgemässe Schüttelvorrichtung 1 absolut vibrationsfrei.According to the teaching of the invention, the first lever arm 71 is extended beyond the bearing 9 for the tray 2 located on the upper side of the neutral plane 73 as the third downwardly cranked lever 70 and has at its end a third weight 81, its center of gravity the lower side of the neutral plane 73 rotates at a second distance 77 therefrom in a plane parallel thereto with a third lever spacing 76 from the axis of rotation 6, for which purpose the first lever arm 71 is bent away in the direction away from the tray. In this case, the mass of the third weight 81 of the second distance 77 and the third lever spacing 76 are dimensioned such that a further tilting moment 15 of equal magnitude but oppositely directed is produced by the third centrifugal force 13 caused by the tilting moment 14, as a result of which the two tilting moments cancel. Moreover, given a given weight of the tray 2, its flange 23, the layer 9, the liquid 3 and the container 4, one measures the size of the weights 81 and 82 such that the sum of the first centrifugal force 11, the second centrifugal force 12 and the third centrifugal force 13 to zero, the inventive shaking device 1 runs absolutely vibration-free.

Nicht nur das zweite Gewicht 82 am Ende des zweiten Hebelarms 72, sondern auch das am Ende des dritten Hebelarms 70 angeordnete dritte Gewicht 81 kann eine Verstellvorrichtung zur Änderung sowohl des Hebelabstandes (75 bzw. 76) von der Drehachse 6 als auch zur Änderung des Abstandes 80 bzw. 77 von der Neutralebene 73 aufweisen, so dass auf die verschieden hohen Lagen als Abstand 78 von der Neutralebene 73 des gemeinsamen Schwerpunktes 31 bei verschiedenen Behältnissen 4 sowie Füllungsgraden der Flüssigkeit 31 als auch auf das Gewicht des Behältnisses 4 sowie dessen zu schüttelnde Flüssigkeit 3 reagiert werden kann.Not only the second weight 82 at the end of the second lever arm 72, but also the third weight 81 disposed at the end of the third lever arm 70 can be an adjustment device for changing both the lever distance (75 or 76) from the rotation axis 6 and for changing the distance 80 and 77 of the neutral plane 73, so that the different high positions as distance 78 from the neutral plane 73 of the common center of gravity 31 in different containers 4 and degrees of filling of the liquid 31 and on the weight of the container 4 and its liquid to be shaken 3 can be reacted.

Claims (5)

1. Schüttelvorrichtung (1) mit einem -im Betrieb in einer waagrechten Ebene- eine kreisende Schüttelbewegung ausführenden Tablar (2), auf dessen Oberseite (21) zumindest ein eine zu schüttelnde Flüssigkeit (3) aufweisendes Behältniss (4) vorgesehenen ist, in dessen gemeinsamen Schwerpunkt (31) eine ein Kippmoment (14) bewirkendene erste Fliehkraft (11) entsteht, - mit einem Drehantrieb (5), - mit einem von diesem mit einer bestimmten Winkelgeschwindigkeit um eine Drehachse (6) drehbaren, über ein eine zu dieser parallel verlaufende Achse (91) aufweisendes Lager (9) an der Unterseite (22) des darüber angeordneten Tablars angreifenden, eine Kröpfung aufweisenden Exzenterhebel (7), - mit einem von der Unterseite (22) des darüber angeordneten Tablars (2) einen ersten Abstand (79) aufweisenden sowie sich winklig zu der Drehachse (6) verlaufenden ersten Hebelarm (71) des Exzenterhebels (7), der einen ersten Hebelabstand (74) von der Drehachse (6) aufweist, - mit einem von der Unterseite (22) des darüber angeordneten Tablars (2) einen zweiten Abstand (80) aufweisenden sowie sich winklig zu der Drehachse (6) erstreckenden, in einer Neutralebene (73) umlaufenden zweiten Hebelarm (72), der an seinem Ende ein mit einem zweiten Hebelabstand (75) von der Drehachse (6) umlaufendes, eine bezüglich der ersten Fliehkraft (11) entgegengesetzt gerichtete zweite Fliehkraft (12) an seinem Schwerpunkt bewirkendes zweites Gewicht (82) aufweist, - mit einem von der Unterseite (22) des darüber angeordneten Tablars (2) einen dritten Abstand (77+79) aufweisenden sowie winklig zu der Drehachse (6) verlaufenden dritten Hebelarm (70), der an seinem Ende ein mit einen dritten Hebelabstand (76) von der Drehachse (6) umlaufendes, eine bezüglich der zweiten Fliehkraft (12) entgegengesetzt gerichtete dritte Fliehkraft (13) an seinem Schwerpunkt bewirkendes drittes Gewicht (81) aufweist, - wobei die Kröpfung des Exzenterhebels (7) sowie alle Hebelarme (70,71,72) und somit der gemeinsame Schwerpunkt (31) sowie die beiden Schwerpunkte des zweiten Gewichtes (82) sowie des dritten Gewichtes (81) in einer durch die Drehachse (6) hindurchgehenden Vertikalebene (6,11,13) liegen und im Schüttelbetrieb mit derselben Winkelgeschwindigkeit drehbar sind - und wobei der gemeinsame Schwerpunkt (31) und der Schwerpunkt des dritten Gewichtes (81) auf verschiedenen Seiten der Neutralebene (73), aber bezüglich des zweiten Hebelabstandes (75) auf der diametral gegenüberliegenden anderen Seite der Drehachse (6) angeordnet sind, dadurch gekennzeichnet, - dass die Masse des zweiten Gewichtes (82) und der zweite Hebelabstand (75) so bemessen sind, dass die dadurch bewirkte zweite Fliehkraft (12) dem Betrage nach gleich gross wie die Summe von der ersten Fliehkraft (11) sowie der dritten Fliehkraft (13) ist - und dass die Masse des dritten Gewichtes (81) und der dritte Hebelabstand (76) sowie der dritte Abstand (77) von der Neutralebene (73) so bemessen sind, dass das dadurch bewirkte weitere Kippmoment (15) bezüglich des Kippmoments (14) gleich gross, aber entgegengesetzt gerichtet ist. 1. shaking device (1) with a -im operating in a horizontal plane- a circular shaking motion-executing tray (2), on its upper side (21) at least one liquid to be shaken (3) exhibiting container (4) is provided in the common center of gravity (31) creates a tilting moment (14) causing first centrifugal force (11), with a rotary drive (5), - With one of this with a certain angular velocity about a rotation axis (6) rotatable, via a parallel to this axis (91) exhibiting bearing (9) on the underside (22) of the tray arranged above, a crank having eccentric lever ( 7) with a first lever arm (71) of the eccentric lever (7) extending at an angle to the axis of rotation (6) from the underside (22) of the shelf (2) arranged above it and having a first lever spacing (74) ) from the axis of rotation (6), with a second lever arm (72) extending at an angle from the underside (22) of the tray (2) arranged above it and extending at an angle to the axis of rotation (6) and circulating in a neutral plane (73) End having a second lever spacing (75) of the rotation axis (6) encircling, with respect to the first centrifugal force (11) oppositely directed second centrifugal force (12) at its center of gravity causing second weight (82), - Having a third distance (77 + 79) from the underside (22) of the arranged above the tray (2) and at an angle to the axis of rotation (6) extending third lever arm (70) at its end with a third lever spacing ( 76) of the rotational axis (6) encircling, with respect to the second centrifugal force (12) oppositely directed third centrifugal force (13) at its center of gravity causing third weight (81), - The crank of the eccentric lever (7) and all lever arms (70,71,72) and thus the common center of gravity (31) and the two centers of gravity of the second weight (82) and the third weight (81) in a through the axis of rotation ( 6) passing through the vertical plane (6,11,13) and are rotatable in shaking at the same angular velocity - and wherein the common center of gravity (31) and the center of gravity of the third weight (81) on different sides of the neutral plane (73), but with respect to the second lever spacing (75) on the diametrically opposite other side of the axis of rotation (6) are arranged characterized, - That the mass of the second weight (82) and the second lever spacing (75) are dimensioned such that the resulting second centrifugal force (12) is equal in magnitude to the sum of the first centrifugal force (11) and the third centrifugal force (13) - And that the mass of the third weight (81) and the third lever spacing (76) and the third distance (77) of the neutral plane (73) are dimensioned so that the resulting additional tilting moment (15) with respect to the tilting moment (14) the same size but opposite. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das dritte Gewicht (81) mit dem zweiten Abstand (77) von der Neutralebene (73) und mit einem dritten Hebelabstand (76) von der Drehachse (6) an dieser mit einem gesonderten Hebel festgelegt ist, der mit gleicher Drehzahl wie der erste Hebelarm (71) und in derselben Radialebene wie dieser um die Drehachse (6) umläuft. 2. Apparatus according to claim 1, characterized in that the third weight (81) with the second distance (77) from the neutral plane (73) and with a third lever distance (76) from the axis of rotation (6) at this with a separate lever is set, which rotates at the same speed as the first lever arm (71) and in the same radial plane as this about the axis of rotation (6). 2. Schüttelvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass der erste Hebelarm (71) über das Lager (9) für das auf der oberen Seite der Neutralebene (73) befindliche Tablar (2) hinaus als dritter Hebelarm (70) verlängert ist und an seinem Ende das dritte Gewicht (81) aufweist, dessen Schwerpunkt auf der unteren Seite der Neutralebene (73) mit dem zweiten Abstand (77) von dieser in einer dazu parallelen Ebene mit dem dritten Hebelabstand (76) von der Drehachse (6) umläuft. Second shaking device (1) according to claim 1, characterized in that the first lever arm (71) on the bearing (9) for the on the upper side of the neutral plane (73) located tray (2) extends as a third lever arm (70) and at its end has the third weight (81) whose center of gravity on the lower side of the neutral plane (73) with the second distance (77) therefrom in a plane parallel thereto with the third lever distance (76) from the axis of rotation (6 ) rotates. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der zweite Abstand (77) von der Neutralebene (73) und der dritte Hebelabstand (76) von der Drehachse (6) an dem dritten Hebelarm (70) zum Versatz des dritten Gewichtes (81) an seinem Ende einstellbar sind. 4. Device according to one of claims 1 to 3, characterized in that the second distance (77) of the neutral plane (73) and the third lever spacing (76) of the rotation axis (6) on the third lever arm (70) for displacing the third weight (81) are adjustable at its end. 5. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das dritte Gewicht (81) am Ende des dritten Hebelarms (71) in radialer Richtung verstellbar ist. 5. Device according to one of claims 1 to 3, characterized in that the third weight (81) at the end of the third lever arm (71) is adjustable in the radial direction.
EP07005711A 2006-05-09 2007-03-20 Shaker Not-in-force EP1854533B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006021851A DE102006021851A1 (en) 2006-05-09 2006-05-09 Laboratory shaking assembly for vessel holding a liquid charge rests off-center in a cranked rotor arm with mass balances at each end
DE102006042222 2006-09-06

Publications (2)

Publication Number Publication Date
EP1854533A1 true EP1854533A1 (en) 2007-11-14
EP1854533B1 EP1854533B1 (en) 2010-08-25

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EP07005711A Not-in-force EP1854533B1 (en) 2006-05-09 2007-03-20 Shaker

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AT (1) ATE478726T1 (en)
DE (1) DE502007004835D1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8226291B2 (en) 2010-05-24 2012-07-24 New Brunswick Scientific Co., Inc. Adjustable orbit imbalance compensating orbital shaker
EP2301679A3 (en) * 2009-09-29 2012-10-03 Infors AG Shaker
US11253827B2 (en) 2017-11-02 2022-02-22 Infors Ag Shaker

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816710A1 (en) * 1968-12-10 1970-06-25 New Brunswick Scientific Co Shaking device
DE3319575A1 (en) * 1982-05-29 1983-12-01 Reiko Osaka Kosaka THERAPEUTICALLY EFFECTIVE COMPOSITIONS, FOOD AND BEVERAGES
US5558437A (en) * 1995-05-19 1996-09-24 Forma Scientific, Inc. Dynamically balanced orbital shaker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816710A1 (en) * 1968-12-10 1970-06-25 New Brunswick Scientific Co Shaking device
DE3319575A1 (en) * 1982-05-29 1983-12-01 Reiko Osaka Kosaka THERAPEUTICALLY EFFECTIVE COMPOSITIONS, FOOD AND BEVERAGES
US5558437A (en) * 1995-05-19 1996-09-24 Forma Scientific, Inc. Dynamically balanced orbital shaker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2301679A3 (en) * 2009-09-29 2012-10-03 Infors AG Shaker
US8226291B2 (en) 2010-05-24 2012-07-24 New Brunswick Scientific Co., Inc. Adjustable orbit imbalance compensating orbital shaker
WO2012162355A1 (en) 2011-05-24 2012-11-29 New Brunswick Scientific Co., Inc. Adjustable orbit imbalance compensating orbital shaker
US11253827B2 (en) 2017-11-02 2022-02-22 Infors Ag Shaker

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DE502007004835D1 (en) 2010-10-07
EP1854533B1 (en) 2010-08-25
ATE478726T1 (en) 2010-09-15

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