EP3240625A1 - Rotor d'une centrifugeuse double - Google Patents

Rotor d'une centrifugeuse double

Info

Publication number
EP3240625A1
EP3240625A1 EP15808120.8A EP15808120A EP3240625A1 EP 3240625 A1 EP3240625 A1 EP 3240625A1 EP 15808120 A EP15808120 A EP 15808120A EP 3240625 A1 EP3240625 A1 EP 3240625A1
Authority
EP
European Patent Office
Prior art keywords
rotor
housing
head
rotary
rotor according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP15808120.8A
Other languages
German (de)
English (en)
Inventor
Jovan DOBOS
Anke LENZ
Ulrich Massing
Klaus-Günter Eberle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andreas Hettich GmbH and Co KG
Original Assignee
Andreas Hettich GmbH and Co KG
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 Andreas Hettich GmbH and Co KG filed Critical Andreas Hettich GmbH and Co KG
Publication of EP3240625A1 publication Critical patent/EP3240625A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/10—Mixers with rotating receptacles with receptacles rotated about two different axes, e.g. receptacles having planetary motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/02—Centrifuges consisting of a plurality of separate bowls rotating round an axis situated between the bowls
    • 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
    • B04B9/12—Suspending rotary bowls ; Bearings; Packings for bearings

Definitions

  • the invention relates to a rotor of a dual centrifuge according to the in the preamble of
  • Claim 1 specified type.
  • Dual centrifuges have been known for several years. Whereas in a conventional centrifuge samples are rotated about a single axis, in a dual centrifuge, samples are rotated about a major axis and simultaneously about a minor axis. Due to the resulting high centripetal force and the centrifugal forces acting in different planes, a higher centrifugation efficiency is achieved, especially when mixing, separating or homogenizing samples.
  • DE 10 2012 105 819 A1 discloses a device for homogenizing and separating samples which comprises a centrifuge with a rotor body.
  • rotary units are mounted, which are mounted so that they are rotatable about an off-axis of rotation from the motor rotation axis (main axis of rotation).
  • a separate drive is provided, so that the generation of the rotational movement of the rotation units is independent of the drive of the rotor body.
  • the above invention is an improvement over the prior art in particular in that lubricant leaving a bearing of a rotation unit remains in the recess associated with the rotation unit and is further available there in the area of the bearing. As a result, significantly longer transit times can be achieved than with solutions from the prior art.
  • the object of the invention is to provide a rotor for a dual centrifuge while avoiding the disadvantages mentioned, which simplifies maintenance and reduces downtime.
  • the rotary units and the recesses associated with the rotary units for the purpose of maintenance, repair and cleaning should be easily accessible and sufficient cooling for long-term operation possible.
  • the characterizing features of claim 1 in conjunction with its generic features.
  • the invention is based on the finding that a decoupling of the bearing of the rotary unit from the rotor body creates better conditions for the maintenance, repair and cleaning as well as for the cooling of the rotary unit. In addition, this results in additional design options to optimize maintenance and cooling.
  • the rotor of a centrifuge has a rotor head and another
  • Rotary mechanism for at least one arranged in the rotor head rotating unit.
  • the turntable includes a bearing and a rotatably mounted rotary head connected to the bearing and drivable relative to the rotor head via the further rotating mechanism.
  • a recess for the rotary unit or for each rotary unit is provided, in which this is introduced, and thereby the bearing is arranged fixed relative to the rotor head.
  • the rotary unit has a housing into which the bearing is inserted and into which the rotary head engages, and the housing and the rotary head with bearings form a unit, wherein the housing is non-rotatably mounted in the rotor head and detachably mounted therefrom.
  • the operability and the life of the centrifuge are significantly improved because cleaning, maintenance and repair of the bearing of the rotary unit due to the detachable mounting of the housing in the rotor head are much easier.
  • the turntable can be easily removed from the rotor head and serviced independently of the rotor head.
  • the turntable can be easily replaced so that downtime due to maintenance is minimized.
  • the recesses extend through a region of the rotor head. In this case, the inserted rotary unit passes through the recess, and a lower portion of the housing of the rotary unit protrudes exposed from the recess.
  • the rotor head has a rotationally symmetrical
  • the cooling can be further improved by having it in the lower part of the housing
  • Cooling fins are provided to increase the cooling surface of the rotary unit.
  • the cooling fins can be aligned and bent in the direction of rotation of the rotor head, wherein they have a radius starting from the axis of rotation of the rotor head in order to achieve an approximately laminar air flow and flow shadow and thus to avoid uneven cooling of the housing as far as possible.
  • numerous experiments have shown that it is even more efficient to cool with a turbulent air flow. Therefore, it is advantageous if the cooling fins are employed at an angle to the direction of rotation.
  • the rotary unit is detachable
  • the housing on its side remote from the cooling fins on a flange which bears against the rotor head.
  • the housing is securely fixed in the direction of its longitudinal axis by this flange in the recess associated with the housing.
  • Rotary unit adapted to each other.
  • the housing in addition to the direction of its longitudinal axis in other directions can be easily set, which increases the safety of the centrifuge and extends the life of the rotating units.
  • This definition can be further improved by the fact that the cross-sectional shape of the
  • Housing and the cross-sectional shape of the recess form a rotational security, in particular by a polygonal shape or a cylindrical shape with projections and associated grooves. In this way, an unwanted rotation of the housing about its own axis is avoided in addition to the above-described determination of the housing relative to the rotor head.
  • the housing and a centric bore housing termination for an axis of rotation of the turret define a storage space with bearings of the axis of rotation.
  • the storage space is encapsulated lubricant-tight to the outside.
  • lubricant leaving a bearing remains in the housing during the entire duration of the centrifugation and is available in the area of the bearing.
  • the danger of a predator can be significantly reduced.
  • contamination of the rotor head with lubricant is avoided.
  • the storage space is filled with lubricant, in particular lubricating grease, preferably SKF rolling bearing grease LGBB2 / 0.4.
  • lubricant in particular lubricating grease, preferably SKF rolling bearing grease LGBB2 / 0.4.
  • the bearing is in a lubricated state during the entire operating time, which virtually excludes predators.
  • the storage space to 50% of the height of the storage room with
  • Refill lubricant a lubricant refill indicator and / or a lubricant refill valve may be provided.
  • the largest possible part of the surface of the rotary unit is in contact with the rotor head. As a result, optimum heat dissipation from the rotary unit is achieved in the rotor head.
  • the invention also relates to a rotary unit for a rotor with the features just mentioned.
  • 1a is a perspective view of a rotor 10 according to the invention with two rotating units 22;
  • Fig. 1b is a sectional view of the rotor 10 shown in Fig. 1a;
  • FIG. 2 shows a perspective view of an embodiment according to the invention of a rotary head 24 without the teeth 36;
  • FIG. 3 is a perspective view of an adapter 50 according to the invention.
  • FIG. 4 shows an exploded view of a rotary unit 22 according to the invention
  • Fig. 5a is a view of the rotary unit 22 shown in Fig. 4
  • Fig. 5a is a view of the rotary unit 22 shown in Fig. 4
  • FIG. 5b shows a side sectional view of the rotary unit 22 shown in FIGS. 4 and 5a along the section line and cutting direction CC drawn in FIG. 5a.
  • 1a shows a perspective view of a rotor 10 according to the invention with two rotating units 22 for use in a dual centrifuge not shown in the figures.
  • 1 b shows a sectional view of the rotor 10 shown in FIG. 1 a.
  • the rotor 10 has a rotor head 12 with a rotationally symmetrical basic shape, which describes an envelope.
  • the rotor head 12 is provided with a bottom 15 and a bottom 15
  • a drive axis A extends perpendicularly through the center 13 of the rotor head 12.
  • the wall 14 has a vertical portion 14a and an obliquely downwards in the direction of the drive axle employed portion 14b. There are two relative to the drive axis A opposing recesses 16 are provided which pass through the vertical portion 14a of the wall 14 and the inclined section 14b of the wall 14 partially. In the recesses 16 each of the rotary units 22 are introduced.
  • the rotary units 22 each have an axis of rotation R1, R2 and are through the
  • Recesses 16 aligned so that the axes of rotation R1 and R2 intersect the drive axis A above the rotor 10 at an acute angle. Furthermore, the free ends of the rotary units 22 pointing away from the drive axis A, namely the housings 26 explained below, protrude beyond the envelope in the region of the inclined section 14b of the wall 14.
  • the rotary unit 22 in each case has a largely rotationally symmetrical outer contour and comprises a rotatably mounted rotary head 24 (see FIG. 2) for mounting an adapter 50 for centrifuging (see FIG. 3) and a housing 26 (see FIG. 4) into which a Stock 70 for the
  • Turret 24 is introduced, in which in turn the rotary head 24 engages with a housing 26 provided on its side facing bearing shaft 25.
  • the bearing shaft 25 is partially visible in Fig. 2 and in Fig. 5b.
  • the rotary head 24 has an outer wall 24a arranged concentrically with the axis of rotation R1, R2.
  • the housing 26 is arranged with a wall 26a concentric with the axis of rotation R1, R2 Mistake.
  • the diameter of the rotary head 24 is greater than that of the housing 26, so that between the outer wall 24a and the wall 26a, a shoulder 28 is formed, with which the rotary unit 22 partially engages in the associated recess 16, see Fig. 1a.
  • the housing 26 is adapted in its dimensions to the respectively associated regions of the recesses 16. To produce the rotational strength between the housing 26 and rotor head 12 is in
  • Housing 26 is provided a parallel to the rotation axis R1, R2 formed groove and on
  • Rotor head 12 a projection associated with the groove.
  • Groove and projection are not shown in the figures for reasons of clarity. Incidentally, the arrangement of groove and projection can also be reversed. Further, it is conceivable to choose a polygonal design in place of the cylindrical configuration of the housing 26 so as to achieve a rotationally fixed introduction of the housing in the rotor head.
  • the rotary head 24 is further closed by a closure cover 30 arranged concentrically with the axis of rotation R1, R2.
  • a closure button 32 is provided which serves as a handle to unlock the closure cover 30 by a rotary movement and remove or to put on the closure lid 30 and lock by one of the unlocking opposite rotational movement.
  • a protrusion 34 is provided circumferentially adjacent to the shoulder 28, see e.g. Fig. 2, which defines a rotatably connected to the wall 24a teeth 36 concentric with the axis of rotation R1, R2.
  • gear which is on the one hand with the teeth 36 in engagement and on the other hand with a central gear 40, which is rotatably connected to the rotatable rotor head 12, for example, by a screw connection to a motor housing, not shown in the figures.
  • the ratio of main rotation (rotation of the rotor 10) to reverse rotation (rotation of the rotary head 24) is given by the transmission ratio between the unillustrated gear and the central gear 40.
  • the gear, not shown and the central gear 40 easily interchangeable. Therefore, the speed ratio can be easily changed by adjusting the unillustrated gear and the central gear 40 in diameter.
  • cooling fins 42 are introduced. The cooling fins 42 are aligned perpendicular to the direction of rotation of the rotor head 12.
  • Fig. 2 shows a perspective view of an embodiment according to the invention of a rotary head 24 without the teeth 36.
  • the projection 34 has over the entire circumference uniformly spaced recesses 34a, provided by provided on the underside of the teeth 36 screws 36a, shown in Fig. 1a , are penetrated and engage in associated threaded holes in the toothing 36.
  • the recesses 34a by cross-screws 36a put the teeth 36 on the wall 24a and in the turret 24 and in particular ensure the rotational resistance of the toothing with respect to the turret 24 safe.
  • walls 44 are mounted on a bottom plate 24b for fixing an adapter 50 shown in FIG. 3 for centrifuging.
  • the walls 44 form a
  • Inner profile which is adapted to the outer profile of the adapter 50 shown in FIG. 3, which has a cross-shaped base of two superposed, concentric at right angles to each other rotated rectangles.
  • the walls 44 are partially connected for better stability.
  • each outer profile 44a is formed rounded so that it is concentric with the wall 24a.
  • four uniformly spaced holes 24c are introduced adjacent to its upper edge for locking the closure cover 30 having corresponding projections.
  • Fig. 3 shows in a perspective view the aforementioned adapter 50 for centrifuging.
  • the adapter 50 has on the circumference of the previously described cross-shaped base vertically arranged, integrally formed outer walls 52. Within outer walls 52 five delimited by partition walls 54 rectangular recesses 56 are provided, the vertical extent of the vertical extent of the wall 24a of the rotary head 24 corresponds. The recesses 56 serve to receive not shown in the figures
  • Sample container receptacles and are adapted to the shape of the sample container receptacles. Adjacent to the free upper edges of the outer walls 52 of the adapter 50 is perpendicular to the outer walls 52 a support surface 58 is arranged, which rests in the inserted state of the adapter 50 on the free upper edges of the walls 44.
  • the support surface 58 has an outer contour 60 which is substantially concentric with the wall 24a of the rotary head 24 and in which four circumferentially equally spaced protrusions 62 are provided. The bulges 62 serve for better handling during insertion and removal of the adapter 50 in or out of the rotary head 24.
  • FIG 4 shows an exploded view of the rotary unit 24 and the housing 26 comprising rotary unit 22 with a housing unit 26 integrated in the storage unit 70 which is concentrically penetrated by a drive shaft, not shown for clarity.
  • a clamping nut 72 for biasing the bearing unit 70 two single row angular contact ball bearings 74a and 74b, disposed between the angular contact bearings 74a and 74b outer disc 76 and an inner disc 78 and a cover 80 are arranged. All of the aforementioned elements of the bearing unit 70 have concentric bores which are passed through the bearing shaft 25 of the rotary head 24 without play.
  • each recesses 82 is provided adjacent to the outer circumference at equal intervals.
  • On the turret 24 side associated with the housing 26 has a flange 84 on which eight recesses 86 are provided at uniform intervals, which are associated with the recesses 82.
  • a view of the rotary unit 22 is shown from below.
  • the recesses 82 of the cover 80 each engages a cylinder screw 88, which in the process the associated
  • Recesses 86 of the flange 84 passes through. Each five recesses 82a and five recesses 86a associated therewith are provided. By the cylinder screws 88 are the
  • FIG. 5b shows a cross section of the mounted rotary unit 22 shown in FIGS. 4 and 5a along a section CC drawn in FIG. 5a. Between the bottom plate 24b and the
  • Angular contact ball bearing 74b is provided on the wall 26a a Schmierstoffnachhellventil with a valve line 92, on the lubricant if necessary in the lubricant-tightly sealed to the outside storage space 64 can be refilled.
  • a lubricant filling indicator 90 arranged outside the housing 26 on the wall 26a serves to control the lubricant level.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Centrifugal Separators (AREA)

Abstract

L'invention concerne un rotor (10) d'une centrifugeuse double, comportant une tête de rotor (12) et un mécanisme de rotation supplémentaire pour au moins une unité rotative (22) disposée dans la tête de rotor (12), comprenant un palier (70) et une tête rotative (24) reliée au palier (70) et logée rotative dans celui-ci, pouvant être entraînée par rapport à la tête de rotor (12) au moyen du mécanisme de rotation supplémentaire, une cavité (16) étant prévue pour l'unité rotative (22), l'unité rotative y étant logée et le palier (70) étant par conséquent disposé fixe par rapport à la tête de rotor (12). L'invention est caractérisée en ce que l'unité rotative (22) comporte un boîtier (26) dans lequel le palier (70) est logé et dans lequel la tête rotative (24) s'encastre, et en ce que le boîtier (26) et la tête rotative (24) forment une unité avec le palier (70), le boîtier (26) étant logé bloqué en rotation dans la tête de rotor (12) et de façon amovible par rapport à celle-ci.
EP15808120.8A 2015-01-02 2015-11-24 Rotor d'une centrifugeuse double Pending EP3240625A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015100006.7A DE102015100006A1 (de) 2015-01-02 2015-01-02 Rotor einer dualen Zentrifuge
PCT/EP2015/077534 WO2016107704A1 (fr) 2015-01-02 2015-11-24 Rotor d'une centrifugeuse double

Publications (1)

Publication Number Publication Date
EP3240625A1 true EP3240625A1 (fr) 2017-11-08

Family

ID=54848531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15808120.8A Pending EP3240625A1 (fr) 2015-01-02 2015-11-24 Rotor d'une centrifugeuse double

Country Status (6)

Country Link
US (1) US11059007B2 (fr)
EP (1) EP3240625A1 (fr)
JP (1) JP6657227B2 (fr)
CN (1) CN107466251B (fr)
DE (1) DE102015100006A1 (fr)
WO (1) WO2016107704A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015100613A1 (de) * 2015-01-16 2016-07-21 Andreas Hettich Gmbh & Co. Kg Rotor einer Dualen Zentrifuge
DE102015103752A1 (de) * 2015-03-13 2016-09-15 Andreas Hettich Gmbh & Co. Kg Zentrifuge
DE202017007661U1 (de) * 2016-11-10 2024-02-21 Medisca Pharmaceutique Inc. System zur pharmazeutischen Zubereitung
NO343863B1 (en) 2017-11-09 2019-06-24 Spinchip Diagnostics As Centrifuge apparatus

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WO2005025717A1 (fr) * 2003-09-11 2005-03-24 Thinky Corporation Dispositif d'agitation/desaerage
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JP2006305512A (ja) * 2005-05-02 2006-11-09 Thinky Corp 攪拌脱泡方法および攪拌脱泡装置
DE102006047480B4 (de) * 2005-10-07 2015-10-01 Fritsch Gmbh Kugelmühle mit Mitnahmemitteln für eine formschlüssige Verbindung zwischen Mahlgefäß und Aufnahmevorrichtung
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JP2010240579A (ja) * 2009-04-06 2010-10-28 Mediken Inc 粉体撹拌装置
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JP5439087B2 (ja) * 2009-08-11 2014-03-12 株式会社写真化学 攪拌脱泡装置
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GB2478578A (en) * 2010-03-11 2011-09-14 Mann & Hummel Gmbh Centrifugal separator with protected bearing
CN102958576B (zh) * 2011-06-15 2014-03-26 三星工业株式会社 搅拌和/或脱泡装置
JP2013188657A (ja) * 2012-03-13 2013-09-26 Panasonic Corp 攪拌装置
WO2013183554A1 (fr) * 2012-06-04 2013-12-12 三星工業株式会社 Dispositif d'agitation/de démoussage et son procédé de fonctionnement
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Also Published As

Publication number Publication date
WO2016107704A1 (fr) 2016-07-07
US20170348653A1 (en) 2017-12-07
CN107466251A (zh) 2017-12-12
JP2018500163A (ja) 2018-01-11
US11059007B2 (en) 2021-07-13
CN107466251B (zh) 2019-08-20
DE102015100006A1 (de) 2016-07-07
JP6657227B2 (ja) 2020-03-04

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