EP1854533B1 - Shaker - Google Patents

Shaker Download PDF

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Publication number
EP1854533B1
EP1854533B1 EP07005711A EP07005711A EP1854533B1 EP 1854533 B1 EP1854533 B1 EP 1854533B1 EP 07005711 A EP07005711 A EP 07005711A EP 07005711 A EP07005711 A EP 07005711A EP 1854533 B1 EP1854533 B1 EP 1854533B1
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EP
European Patent Office
Prior art keywords
lever
distance
weight
lever arm
rotational axis
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Not-in-force
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EP07005711A
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German (de)
French (fr)
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EP1854533A1 (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 shaking device according to the main claim.
  • a shaking device DE 18 16 710 .
  • a counterweight to compensate for the eccentricity Incident imbalance is attached, in the generic shaking still the third weight below the second weight and arranged diametrically 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.
  • Such a generic shaking device is known ( US 5,558,437 . FIG. 1 ).
  • the third weight runs as in the arranged below the mounting plate pulley built-in counterweight with this together.
  • the size of this counterweight is typically determined by a standard load of tray and containers thereon. It will also keep a variety of V-belt pulleys with counterweights, which are then installed according to the relevant equipment of the shaker. For larger loads then the second and third weight can be additionally increased.
  • a disadvantage of this known device is that not only the second weights have to be removed from the one-armed lever when setting up the shaker for a new batch and replaced with the corresponding weight; Rather, the pulley under the mounting plate must be replaced accordingly, which requires the complete disassembly of the shaker and thus consuming.
  • the weights are fixed to the one-armed lever in the form of a U-rail through holes provided therefor, which is related to a not very variable adjustability with respect to the eccentricity of the lever-determining crank as well as with respect to the radial distance.
  • 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 so dimensioned that by a consequently caused third centrifugal force and their second distance from the neutral plane a -beück- with respect to the tilting moment occurring in the known Scierelvorraumen- equal, but oppositely directed further tilting moment arises, resulting in the two tilting moments completely cancel.
  • the weight of the tray, its flange, the liquid and the container are to be dimensioned the size of the two weights so that the sum of the first centrifugal force, the second centrifugal force and the third centrifugal force becomes zero, there is the advantage that the Shaking device 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. It turns out
  • 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.
  • the generally designated 1 shaking device has the reproduced embodiment in plan view a circular, flat tray 2 for recording on its top 21- a single, filled with a liquid to be shaken 3, symmetrically arranged on the tray and there container 4 on.
  • the shaking device 1 is further provided with a rotary drive 5, one of the bottom 22nd of the tray 2 facing eccentric lever 7 about a rotation axis 6 with 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 to the axis of rotation 6 second lever arm 72, at the 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 large, 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 so that a further tilting moment 15 of the same 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 a 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.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)

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 Schüttelvorrichtung nach dem Hauptanspruch.The invention relates to a shaking device according to the main claim.

Es ist eine Schüttelvorrichtung 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 angeordnet. 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 verzichtet werden kann.It is known a shaking device ( 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 eccentricity Incident imbalance is attached, in the generic shaking still the third weight below the second weight and arranged diametrically 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 the opposite, 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 dispensed with considerable mass on an anchoring of the shaking device in execution of the substructure.

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.

Eine solche gattungsgemässe Schüttelvorrichtung ist bekannt ( US 5,558,437 , Figur 1). Hierbei läuft das dritte Gewicht als in der unterhalb der Montageplatte angeordneten Keilriemenscheibe eingebautes Gegengewicht mit dieser zusammen um. Die Grösse dieses Gegengewichts wird typischerweise durch eine Standardlast von Tablar und darauf befindlichen Behältern festgelegt. Es wird ferner eine Vielzahl dieser Keilriemenscheiben mit Gegengewichten vorgehalten, die dann entsprechend der betreffenden Bestückung der Schüttelvorrichtung eingebaut werden. Für grössere Lasten können dann auch das zweite und dritte Gewicht zusätzlich vergrössert werden.Such a generic shaking device is known ( US 5,558,437 . FIG. 1 ). Here, the third weight runs as in the arranged below the mounting plate pulley built-in counterweight with this together. The size of this counterweight is typically determined by a standard load of tray and containers thereon. It will also keep a variety of V-belt pulleys with counterweights, which are then installed according to the relevant equipment of the shaker. For larger loads then the second and third weight can be additionally increased.

Von Nachteil bei dieser bekannten Vorrichtung ist, dass nicht nur die zweiten Gewichte an dem einarmigen Hebel bei Einrichtung der Schüttelvorrichtung für eine neue Charge abmontiert und gegen das entsprechende Gewicht ausgetauscht werden müssen; vielmehr muss auch die unter der Montageplatte befindliche Keilriemenscheibe entsprechend ausgetauscht werden, was die vollständige Zerlegung der Schüttelvorrichtung erfordert und somit aufwendig ist. Ausserdem werden die Gewichte an dem einarmigen Hebel in Form einer U-Schiene durch daran vorgesehene Bohrungen festgelegt, was zu einer nicht sehr variablen Einstellbarkeit bezüglich der die Exzentrizität des Hebels bestimmende Kröpfung als auch bezüglich des radialen Abstandes anbelangt.A disadvantage of this known device is that not only the second weights have to be removed from the one-armed lever when setting up the shaker for a new batch and replaced with the corresponding weight; Rather, the pulley under the mounting plate must be replaced accordingly, which requires the complete disassembly of the shaker and thus consuming. In addition, the weights are fixed to the one-armed lever in the form of a U-rail through holes provided therefor, which is related to a not very variable adjustability with respect to the eccentricity of the lever-determining crank as well as with respect to the radial distance.

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 gelöst.This object is achieved according to the invention in a generic shaking device according to the preamble of the main claim by its characterizing features.

Hierbei wird 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 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. Es ergibt sichIn this case, the mass of the third weight is so dimensioned that by a consequently caused third centrifugal force and their second distance from the neutral plane a -beück- with respect to the tilting moment occurring in the known Schüttelvorrichtungen- equal, but oppositely directed further tilting moment arises, resulting in the two tilting moments completely cancel. Moreover, if the weight of the tray, its flange, the liquid and the container are to be dimensioned the size of the two weights so that the sum of the first centrifugal force, the second centrifugal force and the third centrifugal force becomes zero, there is the advantage that the Shaking device 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. It turns out

Beine besonders einfache und kompakte Ausführungsform der Erfindung, wenn 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.Legs particularly simple and compact embodiment of the invention, when the first lever arm is extended beyond the bearing for the located on the upper side of the neutral plane tray out as a third lever arm with simultaneous cranking down and at its end the third weight, whose focus on the the lower side of the neutral plane at the second distance from the latter in a plane parallel thereto with the third lever distance from the axis of rotation.

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.

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 recording on its top 21- a single, filled with a liquid to be shaken 3, symmetrically arranged on the tray and there container 4 on.

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, one of the bottom 22nd of the tray 2 facing eccentric lever 7 about a rotation axis 6 with 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 to the axis of rotation 6 second lever arm 72, at the 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 large, 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 so that a further tilting moment 15 of the same 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 a 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. A shaker apparatus (1) having a tray (2) that in operation carries out a rotary shaking movement in a horizontal plane, on the top side (21) of which at least one vessel (4) containing a liquid (3) to be shaken is provided in whose common centre of gravity (31) a first centrifugal force (11) causing a moment of tilt (14) is generated,
    - comprising a rotary drive (5),
    - comprising an eccentric lever (7) having a crank, being rotatable by the rotary drive about a rotational axis (6) at a predetermined angular velocity and, via a bearing (9) having an axis (91) in parallel to the rotational axis (6), engaging with the bottom side (22) of the tray disposed above the same,
    - comprising a first lever arm (71) of the eccentric lever (7) having a first distance (79) from the bottom side (22) of the tray (2) disposed above the same and running at an angle to the rotational axis (6), which lever arm has a first lever distance (74) from the rotational axis (6),
    - comprising a second lever arm (72) having a second distance (80) from the bottom side (22) of the tray (2) disposed above the same and extending at an angle to the rotational axis (6) and rotating in a neutral plane (73), which lever arm has at its end a second weight (82) circulating at a second lever distance (75) from the rotational axis (6) and causing at its centre of gravity a second centrifugal force (12) oppositely directed with respect to the first centrifugal force (11),
    - comprising a third lever arm (70) having a third distance (77 + 79) from the bottom side (22) of the tray (2) disposed above the same and running at an angle to the rotational axis (6), which lever arm has at its end a third weight (81) rotating at a third lever distance (76) from the rotational axis (6) and causing at its centre of gravity a third centrifugal force (13) oppositely directed with respect to the second centrifugal force (12),
    - the crank of the eccentric lever (7) as well as all lever arms (70, 71, 72) and thus the common centre of gravity (31) and the two centres of gravity of the second weight (82) and of the third weight (81) being located in a vertical plane (6, 11, 13) passing through the rotational axis (6) and being rotatable at the same angular velocity in a shaking operation,
    - the common centre of gravity (31) and the centre of gravity of the third weight (81) being disposed on different sides of the neutral plane (73), however, on the diametrically opposed other side of the rotational axis (6) with respect to the second lever distance (75),
    - the mass of the second weight (82) and the second lever distance (75) being dimensioned such that the second centrifugal force (12) caused thereby is as large as the sum of the first centrifugal force (11) and the third centrifugal force (13) in terms of amount,
    - the mass of the third weight (81) and the third lever distance (76) as well as the third distance (77) from the neutral plane (73) being dimensioned such that the further moment of tilt (15) caused thereby is equally large with respect to the moment of tilt (14), but oppositely directed,
    - and the first lever arm (71) being extended beyond the bearing (9) as a third lever arm (70) for the tray (2) located on the upper side of the neutral plane (73) and having at its end the third weight (81) whose centre of gravity circulates on the bottom side of the neutral plane (73) at the second distance (77) from the same in a plane parallel thereto at the third lever distance (76) from the rotational axis (6), characterized in that the centre of gravity of the second weight (82) circulates on the second lever arm (72) in the neutral plane (73) and thus the second centrifugal force (12) is effective in the latter.
  2. The apparatus of claim 1, characterized in that the second distance (77) can be adjusted from the neutral plane (73) and the third lever distance (76) can be adjusted from the rotational axis (6) on the third lever arm (70) for offsetting the third weight (81) at the end thereof.
  3. The apparatus of claim 1, characterized in that the third weight (81) can be adjusted in a radial direction at the end of the third lever arm (71).
  4. The apparatus of claim 1, characterized in that the first lever arm (71) of the eccentric lever (7) formed with two arms is extended beyond the bearing (9) for the tray (2) located on the upper side of the neutral plane (73) as a third lever arm (70) while simultaneously being cranked downward in a direction away from the tray.
  5. The apparatus of claim 1, characterized in that the first lever arm (71) of the eccentric lever (7) formed with two arms is at a right angle to the axis (6).
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 EP1854533A1 (en) 2007-11-14
EP1854533B1 true EP1854533B1 (en) 2010-08-25

Family

ID=38328190

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Application Number Title Priority Date Filing Date
EP07005711A Not-in-force EP1854533B1 (en) 2006-05-09 2007-03-20 Shaker

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EP (1) EP1854533B1 (en)
AT (1) ATE478726T1 (en)
DE (1) DE502007004835D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009043354A1 (en) * 2009-09-29 2011-03-31 Infors Ag shaking
US8226291B2 (en) 2010-05-24 2012-07-24 New Brunswick Scientific Co., Inc. Adjustable orbit imbalance compensating orbital shaker
EP3479894B1 (en) 2017-11-02 2022-04-20 Infors AG Shaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1199840A (en) * 1968-12-10 1970-07-22 New Brunswick Scientific Co Shaker Apparatus
US4477434A (en) * 1982-05-29 1984-10-16 Reiko Kosaka Medicinal compositions, foods and beverages having therapeutic effects on diseases of circulatory system and digestive system
US5558437A (en) * 1995-05-19 1996-09-24 Forma Scientific, Inc. Dynamically balanced orbital shaker

Also Published As

Publication number Publication date
ATE478726T1 (en) 2010-09-15
EP1854533A1 (en) 2007-11-14
DE502007004835D1 (en) 2010-10-07

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