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WO1998007507A1 - Procede et dispositif pour le melange ou la separation de substances presentant des masses et/ou densites differentes - Google Patents

Procede et dispositif pour le melange ou la separation de substances presentant des masses et/ou densites differentes Download PDF

Info

Publication number
WO1998007507A1
WO1998007507A1 PCT/DE1997/001776 DE9701776W WO9807507A1 WO 1998007507 A1 WO1998007507 A1 WO 1998007507A1 DE 9701776 W DE9701776 W DE 9701776W WO 9807507 A1 WO9807507 A1 WO 9807507A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
drive unit
reversal points
areas
along
Prior art date
Application number
PCT/DE1997/001776
Other languages
German (de)
English (en)
Inventor
Norbert Krämer
Original Assignee
Kraemer Norbert
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kraemer Norbert filed Critical Kraemer Norbert
Priority to AT97937462T priority Critical patent/ATE202497T1/de
Priority to DE19780861T priority patent/DE19780861D2/de
Priority to DE59703920T priority patent/DE59703920D1/de
Priority to AU40091/97A priority patent/AU4009197A/en
Priority to EP97937462A priority patent/EP0921852B1/fr
Publication of WO1998007507A1 publication Critical patent/WO1998007507A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/10—Control of the drive; Speed regulating
    • 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
    • B01F31/23—Mixing the contents of independent containers, e.g. test tubes by pivoting the containers about an axis

Definitions

  • the invention relates to a method and a device for mixing / separating substances of different mass and / or density located in at least one container, which is held in a holder which is moved by a drive unit while taking the container with it, according to the preambles of claims 1 and 4th
  • samples must be examined that consist of liquids that contain particles of different weights. Often, particles of different weights have to be intimately mixed with one another or mixed particles also separated, for which purpose these samples are filled into containers and stirred or whisked or shaken according to the known state of the art, or, if desired, the samples are centrifuged by rapid movement on a circular path be centrifuged. With separation, the heavier components move outwards and the lighter components remain closer to the center of the circular movement.
  • centrifugation it is known that a long period of constant force on the samples, as is the case with centrifugation, is disadvantageous for a number of substances.
  • DE-2354368-A1 discloses a device for the centrifugal separation of a liquid in fractions of different densities, which has a separation container which is attached to a centrifuge motor and is moved by it on an orbit about a first axis.
  • a housing enclosing the separation container is arranged rotatably about a second axis, so that both rotary movements overlap with respect to the separation container.
  • Each point of the separation container always remains the same distance from the first axis.
  • DE-1432853-A1 discloses a method and a device for separating substances by gyrofugation, in which a closed container rotates about two different axes.
  • a centrifuge for separating and regrouping particles has become known from US Pat. No. 2,222,266-A.
  • the centrifuge has several drivable axes around which the particles to be centrifuged can rotate simultaneously, so that the particles pass through a superimposed, composite path curve.
  • the present invention has for its object to provide a method and an apparatus for mixing or separation of substances to be mixed or separated according to the type mentioned, which allow improved mixing or separation of components that are otherwise difficult to are mixed or have only a slight difference in specific weight when separated, the method and the device being intended to permit improved sample treatment for many applications.
  • This object is achieved according to the invention in a method for mixing, separating substances of different mass and / or density in at least one container, which is held in a holder which is moved by a drive unit while driving the container, in that the container or the holder moves substantially tangentially back and forth along a cyclically traversed open or closed movement path with at least two areas of strong change in path curvature or at least two reversal points with large path acceleration taking place in these areas or reversal points, with the exception of rotation of the container becomes.
  • a device for carrying out the method is characterized in that the container or the holder by means of the drive unit along a cyclically traversed open or closed movement path with at least two areas of strong change in path curvature or at least two reversal points with a large path taking place in these areas or reversal points - Acceleration, excluding rotation of the container, is guided substantially tangentially back and forth.
  • the invention makes use of the effect that the acceleration forces acting on the particles become very large in reversal points or in parts of strongly changing path curvatures and even go towards infinity for a reversal of movement by 180 degrees, if only - - The time for the reversal of movement is made sufficiently short. Therefore, in the method according to the invention and when using the device even with very poorly mixing substances or with the separation of mixed substances even with small differences in mass and or density, an optimal mixing or separation is guaranteed.
  • the method and the device according to the invention are particularly suitable for mixing substances of different masses and or densities that are difficult to mix.
  • the invention is also suitable for separating substances by mass and / or density, in which case a brief force to separate particles, interrupted by phases without significant force, as made possible by the device according to the invention, none or practically none negative influences, but in many cases can have an advantageous effect on the samples with regard to further analysis or post-treatment.
  • the container is elongated in the form of a sample glass and extends in its longitudinal extent in the direction of the movement path on the holder, the sample glass essentially tangentially on an open movement path along part of a circular arc with a predetermined radius (r) and is moved back and forth with two reversal points or along a straight line with two reversal points in the ends of the movement path.
  • r predetermined radius
  • the container can also along an ellipse or along an "oo" with two areas of strong change in path curvature on a closed trajectory or along a semi-ellipse with a region of strong curvature change and two reversal points on an open trajectory and each with a predetermined radius (r) on one Ball socket can be moved essentially tangentially back and forth.
  • the long axis to short axis ratio is preferably a large number.
  • the holder can be guided along a semi-ellipse with a region of strong change in path curvature and two reversal points.
  • the container is elongated in the form of a sample glass and extends in the longitudinal direction in the direction of the movement path on the holder; by means of the drive unit, the container is on an open trajectory along part of a circular arc with a given radius (r) and with two reversal points or along a straight line with two reversal points or along a spatial semi-ellipse with a region of strong change in curvature and two reversal points or on a closed trajectory guided tangentially back and forth along a spatial ellipse with two areas of strong change in path curvature and a given radius (r).
  • the drive unit consists of at least two eccentrically rotatably mounted eccentric wheels or eccentric rollers which are driven synchronously and which form a constant gap, within which a carrier is guided, which is pivotally supported at its lower end below the gap and which carries the holder for the container at its upper end above the gap, the gap rotating when the eccentric wheels rotate walks back and forth with the carrier.
  • the drive unit can consist of two gear wheels, the axes of rotation of which are rotatably supported in walls at a distance from one another and are driven synchronously by means of a toothed belt, on each Gear with the same eccentricity an eccentric is arranged, which define the constant gap between them, within which the carrier is guided, which defines the length of the radius (r) from its lower pivot point to the holder of the container, the container being tangential is arranged to the carrier.
  • a second drive unit of this type with eccentric rollers can be arranged offset by 90 degrees, in each case between the lower and upper eccentric rollers of the carrier is guided, which is designed as a round rod and is gimbally fastened at its lower end, whereby when the eccentric rollers rotate, the respectively formed lower and upper gap, mutually offset by 90 degrees, partly overlap and take the Hike back and forth; the roller pairs rotate on the gap.
  • the drive unit comprises a DC motor, preferably with speed control.
  • the DC motor is advantageously designed for speeds between 30 and 500 revolutions per minute, preferably between 60 and 300 revolutions per minute. Taking the translation of the rotary movement into a double stroke movement of the carrier with the sample containers, these rotational speed values result in an optimal number of movements per unit of time, which is preferably between 100 and 200 double strokes per minute. Double stroke means the movement from a reversal point on the open movement path of the carrier to the other reversal point and back again to the first reversal point. A motor revolution preferably results in a double stroke of the carrier.
  • a memory device contains a program which queries the operating elements and controls the drive unit in accordance with their position.
  • FIG. 1 shows a schematic side view of a device
  • FIG. 2 shows a front view of the device of FIG. 1, in which operating elements are shown
  • Figure 3 is a view of the drive unit
  • Figure 4 is a view of the drive unit in three different
  • Movement positions Figure 5 is a partial view of the top view of the drive unit
  • Figure 6 is a top view of the housing with the omission of the
  • Drive unit Figure 7 shows another drive unit to enable an Egyptian
  • Movement Figure 8 different possible movements of the container.
  • the device shown by way of example in FIG. 1 consists of a housing 1 with an inclined front wall 1 a and with side walls 1 b and 1 c, a support 2 standing vertically upwards and a mounting frame 3, preferably detachably mounted on the support 2, as a holder for sample containers 7, 7 '. , 7 ", 7" ', 7 “", preferably centrifuge glasses, which are firmly but releasably held within the receiving frame, which is arranged horizontally.
  • the receiving frame 3 can in principle be designed for any number of containers.
  • the housing 1, which is preferably made of a light but stable material, such as aluminum, contains a drive unit 12 for the movement of the carrier 2 and also an associated control, preferably on an electronic basis.
  • the area in which the carrier 2 protrudes from the housing 1 is designed to allow the movement of the carrier 2 as an elongated hole to enable the movement of the carrier 2 and to prevent the ingress of dirt or moisture with an elastic bellows 4, preferably made of rubber , covered.
  • the carrier 2 is preferably driven by the drive unit 12, which comprises a DC motor with speed control.
  • the carrier 2 is mounted in the housing 1 in such a way that the receiving frame 3 always moves back and forth on a section of an arc between two opposite reversal points.
  • the receiving frame 3 always moves back and forth on a section of an arc between two opposite reversal points.
  • very high forces act on the particles in the liquids in the reversal points, which may be in the sample containers, which ensures good mixing of different substances or liquids.
  • the carrier 2 is pivotally mounted at its lower end about a pivot point 8 and can be driven by means of a drive unit 12, which essentially consists of two synchronously driven drive wheels 10, 11.
  • a drive unit 12 which essentially consists of two synchronously driven drive wheels 10, 11.
  • the container 7 is pivoted back and forth on a circular arc with the radius r, the container 7 being directed tangentially and horizontally with respect to its movement path in the rest position.
  • the operating elements can advantageously be provided on the inclined front wall 1 a. As shown in FIG. 2, these are designed for easy input of any desired number of engine revolutions or of double strokes of the carrier per unit of time as a number keyboard 5 with keys from 0 to 9. The correct entry can then be confirmed via a separate entry key 5a.
  • an on / off switch 5 b is integrated in the keyboard in the example shown.
  • a switch key 5c is provided in order to be able to switch between different operating modes - operation via the keyboard 5, 5a or control via an interface, for example via a computer - a switch key 5c is provided. Pressing a mode key 5d causes the device to be switched to a mode in which the desired number of revolutions per minute or the number of double strokes per minute can be entered via the numeric keypad 5.
  • Additional operating status keys 5e, 5f allow the switchover to operating states for test runs over a number of revolutions that can be selected again via the keyboard 5 or over a specific period of time, as well as a switchover to the input and editing mode for the number of revolutions or time for the actual one Operation with the respective samples, the values entered via the keyboard 5 to 5f, the respective current operating state of the device, possibly error messages, etc. can be read on an optical display unit 6.
  • FIGS 3 to 6 show a technical embodiment of the drive unit 12, as used in the device within the housing 1.
  • Ball bearings 25 are held within two walls 26, 26 ', through which axes 22, 23 are guided at a distance from one another, on which gear wheels 15, 16 are arranged adjacent to the wall 26, via which a toothed belt 18 runs for the synchronous drive of the gear wheels 15 , 16, one of which can be driven by means of a motor (not shown).
  • One eccentric wheel 19, 20 is rotatably arranged on each of the gear wheels 15, 16, the eccentricity being indicated by the distance of the pivot points 19 ', 20' of the eccentric wheels 19, 20 from the axes of rotation 15 ', 16' of the gear wheels 15, 16.
  • the eccentricity of the two eccentric wheels 19, 20 is the same, as a result of which a gap 21 which is constant in the inside width is formed between the eccentric wheels 19, 20.
  • An elongated cuboid 14 is arranged in the center between the gear wheels 15, 16 and within the gap 21, which extends below the gear wheels 15, 16 and which extends parallel to the axes of rotation 22, 23 of the gear wheels 15, 16.
  • the eccentric wheels 19, 20 are taken along, so that the gap 21 moves back and forth in a vertical projection.
  • the cuboid 14 is carried along by this gap 21 and thus pivoted back and forth about the axis of rotation 24.
  • a ball-bearing outer slewing ring 27 is arranged on each of the eccentric wheels 19, 20 and rolls on the opposite surfaces of the cuboid 14 when the eccentric wheels 19, 20 rotate.
  • the cuboid 14 or the support rods 13 describes a movement path which is part of an arc of a circle, each with a reversal point located at one end; this movement is shown in FIG. 4 for three different deflections of the cuboid 14 around its pivot point (17).
  • FIG. 7 shows an embodiment of the drive unit, which is used to achieve a cyclically traversed closed movement path with at least two areas of strong change in path curvature and with large path acceleration taking place in these areas with a given radius on a spherical shell.
  • the drive unit consists of two gear wheels 28, 29, which in turn are held and driven synchronously, as in the previous example.
  • An eccentric roller 30, 31 with the same eccentricity is arranged on each of the gear wheels 28, 29, which, when the gear wheels 28, 29 rotate, in turn form a constant driving gap, as described for the previous example.
  • the eccentric rollers 30 ', 31' also define a driving gap of constant width between them.
  • a carrier 32 is guided, which is designed as a round rod to prevent the movements of the pairs of eccentric rollers 30, 31 and 30 '. , 31 'to be able to follow.
  • the lower end of the carrier 32 is gimbaled, so List of reference numerals:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Centrifugal Separators (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Processing Of Solid Wastes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant de mélanger ou de séparer des substances se trouvant au moins dans un contenant (7, 7', 7'', 7''', 7''''), et présentant des masses et/ou des densités différentes. Ledit contenant est maintenu dans un support (2, 3) qui est mis en mouvement par une unité d'entraînement (12) et qui, de ce fait, entraîne ledit contenant (7, 7', 7'', 7''', 7''''). Le contenant (7, 7', 7'', 7''', 7''''), ou bient le support (2, 3), est entraîné par l'unité d'entraînement (12), de façon à effectuer un mouvement de va-et-vient sensiblement tangentiel, le long d'une trajectoire ouverte ou fermée parcourue de façon cyclique, présentant au moins deux zones à forte modification de courbure ou au moins deux points d'inversion, une forte accélération étant effectuée par l'unité d'entraînement (12) dans ces deux zones ou points d'inversion et une rotation du contenant (7, 7', 7'', 7'''') étant exclue.
PCT/DE1997/001776 1996-08-16 1997-08-18 Procede et dispositif pour le melange ou la separation de substances presentant des masses et/ou densites differentes WO1998007507A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT97937462T ATE202497T1 (de) 1996-08-16 1997-08-18 Vorrichtung zum vermischen oder trennen von substanzen unterschiedlicher masse und/oder dichte
DE19780861T DE19780861D2 (de) 1996-08-16 1997-08-18 Verfahren und Vorrichtung zum Vermischen oder Trennen von Substanzen unterschiedlicher Masse und/oder Dichte
DE59703920T DE59703920D1 (de) 1996-08-16 1997-08-18 Vorrichtung zum vermischen oder trennen von substanzen unterschiedlicher masse und/oder dichte
AU40091/97A AU4009197A (en) 1996-08-16 1997-08-18 Process and device for the mixing or separation of substances of varying mass and/or density
EP97937462A EP0921852B1 (fr) 1996-08-16 1997-08-18 Dispositif pour le melange ou la separation de substances presentant des masses et/ou densites differentes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19632875.6 1996-08-16
DE19632875A DE19632875A1 (de) 1996-08-16 1996-08-16 Gerät zur Trennung von Substanzen nach der Masse und/oder Dichte

Publications (1)

Publication Number Publication Date
WO1998007507A1 true WO1998007507A1 (fr) 1998-02-26

Family

ID=7802685

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/001776 WO1998007507A1 (fr) 1996-08-16 1997-08-18 Procede et dispositif pour le melange ou la separation de substances presentant des masses et/ou densites differentes

Country Status (5)

Country Link
EP (1) EP0921852B1 (fr)
AT (1) ATE202497T1 (fr)
AU (1) AU4009197A (fr)
DE (3) DE19632875A1 (fr)
WO (1) WO1998007507A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022201993B3 (de) 2022-02-25 2023-03-16 Hs-Tumbler Gmbh Vorrichtung und Verfahren zur Behandlung von Textilien oder Leder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111359500B (zh) * 2020-03-26 2021-12-31 吉林大学第一医院 一种检验护理用血液混摇装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1465583A (fr) * 1965-11-30 1967-01-13 Centre Nat Rech Scient Dispositif agitateur
US4146364A (en) * 1978-05-12 1979-03-27 Mccormick James B Mixing apparatus and method for blood cell suspensions
DE9311112U1 (de) * 1993-07-24 1994-08-25 Fa. Labortechnik Gerhard Fröbel, 88131 Lindau Laborgerät zur Schaukelbehandlung von Proben
WO1996013323A1 (fr) * 1994-10-27 1996-05-09 Red Devil Equipment Company Appareil melangeur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222266A (en) * 1936-12-03 1940-11-19 Rubissow George Alexis Method and apparatus for the treatment of matter
US3311295A (en) * 1961-02-16 1967-03-28 George A Rubissow Gyrofugation method and means therefor
SE327101B (fr) * 1966-08-22 1970-08-10 H Unger
SE379481B (fr) * 1972-11-02 1975-10-13 Separex Sa
JPS6039089Y2 (ja) * 1982-02-17 1985-11-22 株式会社久保田製作所 ロ−タ種類自動判別装置
JPH0729069B2 (ja) * 1992-09-28 1995-04-05 株式会社ライク 遠心乾燥機のバランス調整装置
JPH06304496A (ja) * 1993-04-23 1994-11-01 Hironobu Iwanaga ワークの方向制御装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1465583A (fr) * 1965-11-30 1967-01-13 Centre Nat Rech Scient Dispositif agitateur
US4146364A (en) * 1978-05-12 1979-03-27 Mccormick James B Mixing apparatus and method for blood cell suspensions
DE9311112U1 (de) * 1993-07-24 1994-08-25 Fa. Labortechnik Gerhard Fröbel, 88131 Lindau Laborgerät zur Schaukelbehandlung von Proben
WO1996013323A1 (fr) * 1994-10-27 1996-05-09 Red Devil Equipment Company Appareil melangeur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022201993B3 (de) 2022-02-25 2023-03-16 Hs-Tumbler Gmbh Vorrichtung und Verfahren zur Behandlung von Textilien oder Leder

Also Published As

Publication number Publication date
DE59703920D1 (de) 2001-08-02
AU4009197A (en) 1998-03-06
EP0921852A1 (fr) 1999-06-16
DE19780861D2 (de) 1999-09-23
DE19632875A1 (de) 1998-02-19
EP0921852B1 (fr) 2001-06-27
ATE202497T1 (de) 2001-07-15

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