EP0966321A1 - Dispositif permettant de remuer, de melanger ou d'agiter des liquides, notamment a des fins d'equilibrage de temperature, de concentration et de centrifugation - Google Patents

Dispositif permettant de remuer, de melanger ou d'agiter des liquides, notamment a des fins d'equilibrage de temperature, de concentration et de centrifugation

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Publication number
EP0966321A1
EP0966321A1 EP98913671A EP98913671A EP0966321A1 EP 0966321 A1 EP0966321 A1 EP 0966321A1 EP 98913671 A EP98913671 A EP 98913671A EP 98913671 A EP98913671 A EP 98913671A EP 0966321 A1 EP0966321 A1 EP 0966321A1
Authority
EP
European Patent Office
Prior art keywords
vessel
ring
magnetic
bearing
treatment
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.)
Granted
Application number
EP98913671A
Other languages
German (de)
English (en)
Other versions
EP0966321B1 (fr
Inventor
Helmut Herz
Klaus Kaufmann
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19709237A external-priority patent/DE19709237A1/de
Priority claimed from DE19709236A external-priority patent/DE19709236A1/de
Priority claimed from DE19724046A external-priority patent/DE19724046A1/de
Application filed by Individual filed Critical Individual
Publication of EP0966321A1 publication Critical patent/EP0966321A1/fr
Application granted granted Critical
Publication of EP0966321B1 publication Critical patent/EP0966321B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B01F29/30—Mixing the contents of individual packages or containers, e.g. by rotating tins or bottles
    • B01F29/31—Mixing the contents of individual packages or containers, e.g. by rotating tins or bottles the containers being supported by driving means, e.g. by rotating rollers
    • 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
    • B01F29/30—Mixing the contents of individual packages or containers, e.g. by rotating tins or bottles
    • B01F29/34—Constructional details of holders for the individual packages or containers
    • 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
    • B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/40—Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
    • B01F35/42—Clamping or holding arrangements for mounting receptacles on mixing devices

Definitions

  • Device for stirring, mixing or moving liquids in particular also for temperature control, concentration and centrifugation
  • the invention relates to a stirring device with the features of the preamble of claim 1.
  • Devices for stirring liquids are generally known, in which a stirring vessel is placed on the surface of a device base containing a magnetic field generation system, into which the liquid to be treated is poured and a magnetic stirring rod is inserted, which is rotating with a rotating device generated by the magnetic field generation system of the device base magnetic drive field interacts and the liquid is stirred through.
  • a magnetic stirring device which contains a number of magnetic field generation systems in a plate-shaped base, which generate rotating magnetic fields near the base top.
  • On the base top there are rotatably mounted vessels, for example in the form of test tubes, which have near their lower end a holder which contains a magnetic organ and which is supported with a bearing tip against a bearing pan on the base top.
  • rotatably mounted vessels for example in the form of test tubes, which have near their lower end a holder which contains a magnetic organ and which is supported with a bearing tip against a bearing pan on the base top.
  • the vessels Near the upper end of the vessels, they are rotatably mounted on a support in such a way that the magnetic organs interacting with the rotating magnetic fields cause the vessels to rotate. can be set.
  • liquid filled into the vessels experiences an intimate intermixing due to the gravitational forces acting in it, since liquid in the treatment vessel is carried along in the layers adhering to the inner wall of the vessel while the Parts of the liquid volume closer to the axis are left behind during the rotation.
  • the tip bearing of the lower end of the vessel or the holder plugged onto the lower end of the vessel ensures a central running of the vessel in its lower part in a bearing depression in a wide speed range, but that the rotary bearing near the upper end of the vessel due to the comparatively large diameter of the vessel tends to run unevenly and that undesirable chattering phenomena occur which can ultimately lead to the vessel coming to a standstill when the drive torque of the magnetic field generation system is no longer sufficient.
  • a reduction in the bearing play of the upper pivot bearing is difficult because of the diameter tolerances of the vessels and can endanger the smooth running of the pivot of the entire vessel.
  • Unwanted chatter phenomena of the upper rotary bearing are triggered by small imbalances which are pressed against a point area of the bearing bore by the centrifugal forces against the outer wall of the vessel and the vessel begins to roll under the driving force on the inner wall of the bearing bore.
  • the vessel speed range is to be expanded to over 8000 rpm.
  • the coupling between the rotating magnetic drive fields generated by the magnetic field generation system of the drive means and the drive part arrangement provided in the mounting attachment of the treatment vessels is improved and thus not only the efficiency of the drive is increased, but also a reliable and low-vibration rotary bearing for the Operation in a wide speed range enables.
  • the rotary mounting means provided near the upper end of the vessel have considerable clearance to the outer wall of the vessel, such that the vessels can be easily inserted into or removed from the stirring device, which is done automatically by means of a manipulator or robot can.
  • the centering and stabilizing agents reliably dampen vibrations and chatter when the vessels are running over a wide speed range and also in cases where the center of gravity of the vessel and filling is relatively high.
  • Fig. 1 is a schematic illustration of a stirring device of the type specified here.
  • FIG. 2 is a partially sectioned side view of a practical embodiment of a stirring device with a schematic indication of the drive means
  • FIG. 7 is a sectional side view of a modified embodiment of a stirring device of the type specified here with a drive provided near the upper end of the vessel, which is supported against the base of the device
  • 8 is a sectional view of an embodiment modified compared to FIG. 11 with drive means located near the upper ends of the vessel, which are held independently of the device base
  • FIG. 9 is a plan view of the pole shoe arrangement of the electromagnetic drive of the device according to FIG. 12,
  • FIG. 10 is a perspective view of a magnetic ring, which is located in a stopper placed on the vessel mouth and interacts with the pole pieces,
  • FIG. 11 is a sectional view of the upper part of a vessel, as can be used, for example, in devices according to FIGS. 2 to 6, with an inserted cooler,
  • FIG. 13 shows a section through the lower part of a stirring device of the type specified here with a heater surrounding the lower end of the vessel
  • FIG. 14 is a partially sectioned stirring device according to a development of the embodiment according to FIG. 8 with mechanical centering and stabilizing means at the lower end of the vessel and both mechanical and magnetic centering and stabilizing means near the upper end of the vessel;
  • FIG. 15 shows a view, partly in section, of the lower part of a further embodiment of a stirring device with a vessel which can be pressed into a carrier;
  • 16 to 18 are schematic, sectional views of the lower part of modified embodiments with magnetic rotary holder and / or drive means at the lower end of the vessel or with a vessel which can be pressed into a carrier similar to the embodiment according to FIG. 15, the carrier being magnetic Has centering and stabilizing means, which also form the drive means;
  • 19 is a side view, partly in section, of a preferred embodiment of a device for stirring or mixing or moving liquids of the type specified here,
  • FIG. 20 is a schematic perspective view of the cores, pole pieces and magnetic return lines of the magnetic field generation system for a device according to FIG. 19,
  • FIG. 21 shows a schematic, sectional side view of a further embodiment of a device of the type specified here, modified from FIG. 19, and
  • 23 to 31 are schematic sectional views of further embodiments or parts of such embodiments shown partly in a sectional side view and partly in supervision.
  • the stirring device shown in FIG. 1 contains a test tube 1 as a vessel for receiving a pourable substance, generally a liquid, which has at its lower end a pin-shaped, integrally molded part.
  • sentence 2 has.
  • a magnetic ring 3 is pushed onto this pin, which is magnetized on diametrically opposite areas, in such a way that a magnetic field generation system 4, which is schematically shown as a block symbol in FIG. 1 and generates a rotating magnetic field, in interaction with the magnetized in the manner described Magnet ring 3 can step and forms together with this drive means which set the test tube 1 in rotation about its vertical longitudinal axis.
  • Vertical support means 5 for example in the form of a bearing pan or bearing recess providing support for the pin 2, take up the weight of the vessel and a liquid filling 6 located therein.
  • lower rotary holder runners 7 which provide lateral support for the pin 2 and the lower end of the test tube 1.
  • upper rotating holder means 8 are provided for the lateral support and storage of the upper end of the test tube.
  • These upper rotary support means have the shape of a bearing bore guided through a plate, which wall surrounds the test tube outer wall with a sufficiently large bearing clearance S, the plate provided with the bearing bore being supported on a frame, not shown in FIG. 1, which in turn opposes itself supports a device base in which the magnetic field generation system of the drive means can be accommodated.
  • the stirring device specified here additionally contains centering and stabilizing means 9, which ensure a highly low-friction, vibration-free running of the test tube 1 within the play S of the upper rotating holder means and possibly also the lower rotating holder means.
  • the centering and stabilizing means contain a damping device 10 which immediately causes any vibrations or chattering phenomena within play S to subside when the test tube 1 rotates.
  • the stirring device according to Fig. 1 henceforth includes a treatment device 11 for influencing the space inside of the test tube 1 as well as a further treatment device 12 for influencing the fluid filling 6 through the wall of the test tube 1 through * from the outside.
  • the treatment device 11 can be placed in the form of an insert on the filling opening of the test tube 1 and circulate with it. Despite the resulting upward shift of the center of gravity of the rotating part of the device, the centering and stabilizing means 9 ensure vibration-free and vibration-free running of the rotating part.
  • the further treatment device 12 is a device that is fixed to the frame, for example a microwave source, an induction heater, a heating device and the like, which is not in one of the rotary mounting means and the centering and stabilizing means installed wall area of the test tube 1 acts on this and on its filling without contact.
  • test tube 1 a metallic vessel or a plastic vessel can also be used, with lossy wall material allowing, for example, induction heating.
  • FIGS. 2 to 6 show practical embodiments of the upper rotating holder means for positioning and guiding the vessel, in which the centering and stabilizing means are integrated into this upper rotating holder .
  • a plate 16 provided with bores 15 is supported by means of a frame 14 above a device base 13 which contains magnetic field generation systems 4 which interact with the magnet 3.
  • the bores 15 have a considerably larger diameter than the outer diameter of the vessels or the test tubes 1.
  • Tetrafluoroethylene rings 17 of wedge-shaped ring cross section are held within these bores 15, which with their inner edge, which is designed like a knife, maintain a very small clearance S with respect to the outer wall of the vessels 1.
  • Damping rings 18 made of resilient material, for example foam plastic or plastic of very soft quality, are located between the tetrafluoroethylene rings 17 and the bores 15 of the plate 16.
  • the tetrafluoroethylene rings 17 form both the upper rotation holding means and the centering and stabilizing means for the vibration-free and not prone to rattling mounting of the vessels or test tubes 1 in their region near the filling opening, while at the lower end of the vessel the - ⁇ O
  • Pins 2 engaging bearing pans represent a precise and play-free rotary holder and at the same time form the vertical support means for receiving the vessel weight and the filling weight.
  • the embodiment according to FIG. 3 provides near the filling opening of the tubes or test tubes 1 from below onto plastic rings 19 which are pushed onto the outer circumference of the tubes and have an upper, comparatively large diameter radial flange 19a which has the respective bore 15 the plate 16 covers and lies loosely on the upper end face of a plastic ring inserted into the bore 15.
  • the plastic ring can be provided with a radial flange directed against the central axis of the vessel 1, which maintains sufficient play with respect to the cylindrical outer surface of the plastic ring 19.
  • the sliding friction between the radial flange 19a of the plastic ring 19 and the upward-facing surfaces of the plate 16 and / or the ring inserted into its bores 15 dampens wobbling movements and vibrations of the vessel 1 effective, so that the vessel returns to a central run.
  • This principle of centering and stabilizing agents shown in FIG. 3 can also be applied to areas near the lower end of the vessel and is characterized by particular simplicity.
  • the plate 16 of the embodiment according to FIG. 4 is composed of two parts, between which membrane-like annular disks 21 are clamped in the area of the bores 15.
  • the radially inner edge of the membrane discs 21 has a small distance from the outer wall of the vessel or test tube 1 and the waves of the ring cross section - ⁇
  • the annular disk 21 absorbing and damping shock energy and vibration energy. 4
  • the annular disks 21 clamped between the parts of the plate 16 form both the upper rotary holder means and the centering and stabilizing means for a rattle-free and vibration-free circulation of the vessels 1 in a wide speed range.
  • Fig. 6 shows in the area of the upper end of the vessel 1 provided rotary holder means and centering and stabilizing means in the form of a magnetic ring 26 pushed onto the vessel on the one hand and along the edge of the bore 15 of the plate 16 arranged on the other at the same circumferential distance magnetic rollers or magnetic disks 27.
  • the magnetic ring 26, which can be pushed onto the vessel 1 from below with the interposition of a flexible plastic ring 28, has, for example, a north pole on the side of the upper ring surface due to corresponding magnetization and on the lower one • ⁇ V
  • the magnetic rollers or magnetic disks 27 also have the north pole on their upper end faces and the south pole on their lower end faces, so that the space between the magnetic ring 26 and the magnetic rollers or magnetic disks 27 is maintained by repelling poles of the same name.
  • the vessels 1 can all have a shape deviating from the elongated cylindrical shape and that the vessels in the area near the filling opening can have a neck portion of reduced circumference.
  • these can be provided near the filling opening with a circumferential, wedge-shaped wall constriction, which fulfills a double function.
  • this constriction reduces the effective circumference of the vessel in its area and forms the preferred point of attack for the rotating holder means, centering and stabilizing means, with a greatly reduced tendency towards vibrations and chattering phenomena to be observed.
  • the constriction of the wall with respect to the interior of the vessel represents a bead that runs all around the top of the inside of the vessel, which prevents the liquid that rises as the vessel rotates faster due to the centrifugal forces on the inside of the vessel from reaching the filling opening and out to be thrown out of the vessel.
  • the radially inner edge of the membrane discs 21 is not continuous but is interrupted by cutouts, so that fingers located radially from the radial outer edge of the membrane discs 21 between the cutouts reach inward.
  • the device base can be equipped with a large number of magnetic field generation systems, over which then a corresponding plurality of vessels 1 is supported by a frame 14 and is rotatably supported.
  • vessels 1 which have a folded-over collar at their upper filling opening, under which a tubular extension engages, which projects from the edge of the bore 15 of the plate 16 (FIG. 2). If the outer surface of the tubular extension with the inner surface of the folded collar on the outer surface of the tubular extension comes to gyroscopic forces which bring the surfaces mentioned out of contact again.
  • the upper end face of the journal can also form the vertical support means for receiving the weight of the vessel 1 and its filling.
  • the magnetic field generation system includes a yoke plate 36 forming part of the device base 13, cores 37 projecting therefrom, excitation coils 38 provided at the upper ends thereof and finally pole plates 39 fastened to the upper ends of the cores 37 with pole shoes 40 bent vertically upward.
  • the shape of the pole plates 39 can be seen for example from Fig. 9.
  • a cover part 41 is provided with an access opening, in the flange of which a magnetic ring 42 is embedded.
  • Fig. 10 shows the shape of this magnetic ring. Its downward facing face has a south pole in one half and a north pole in the other half.
  • the magnetic ring 42 has such a diameter that its From
  • ne lower end face in the vertical direction is approximately aligned with the pole shoes 40 of the pole plates 39.
  • the magnetic ring 42 is attracted to the pole shoes 40 when the coils 38 are excited, four of which are arranged around the vessel 1, and is also rotated by the rotating magnetic field between the pole pieces 40, so that the cover part 41 and turn the vessel 1.
  • the attraction of the magnetic ring 42 in the direction of the pole shoes 40 causes the vessel 1, with its lower, approximately hemispherical end, to be pressed into a corresponding bearing trough 44 of the device base.
  • Fig. 8 shows a modified from Fig. 7 form of leadership from a stirring device of the type specified here, in which the cores of the magnetic field generation system are not connected to the device base 13 but protrude from a yoke plate 36 provided with holes for the passage of the vessels 1, which is provided at a relatively short distance below the pole plates 39, such that the excitation windings 38, the cores 37, the yoke plate 36 and the pole plates 39 represent a plate-like structure which is located at the level of the upper part of the vessels 1 and together with the vessels 1 can be lifted off the device base 13.
  • a yoke plate 36 provided with holes for the passage of the vessels 1, which is provided at a relatively short distance below the pole plates 39, such that the excitation windings 38, the cores 37, the yoke plate 36 and the pole plates 39 represent a plate-like structure which is located at the level of the upper part of the vessels 1 and together with the vessels 1 can be lifted off the device base 13.
  • the frame for supporting the magnetic field generation system or the magnetic field generation systems during operation at a suitable distance from the lower end face of the magnetic rings 42 is omitted in FIG. 8 to simplify the illustration, but is of course provided in a practical embodiment.
  • a liquid tank T is indicated above the device base and below the plate-like structure containing the upper rotation holding means and the centering and stabilizing means, as indicated in FIG. 8 by dash-dotted lines.
  • the cooling head contains a heat exchanger body 47 made of a good heat-conducting material and provided with ribs and a fan wheel 48 screwed to it and located above the access opening of the vessel 1, which has the shape shown in FIG. 12 in a horizontal section.
  • the fan wheel 48 is also made of a good heat-conductive material.
  • the hub of the fan wheel 48 and the connection attachment of the heat exchanger body 47 are each supported on the inner wall of the neck of the vessel 1 via sealing rings 49 and 50, respectively.
  • a central axial bore extends both through the heat exchanger body 47 and through the hub of the fan wheel 48.
  • a chamber 51 serving as a bubble and condensate trap is provided between the hub of the fan wheel and the heat exchanger body 47.
  • the vanes 53 of the fan wheel 48 convey cooling air radially outward and bring about heat removal from the heat exchange body 47.
  • the negative pressure which arises in the radially inner region of the fan wheel can condensate into the chamber via the axial channel of the heat sink 51 suck. There, however, the condensate is flung radially outwards and returns to the interior of the vessel 1 via the channels 52.
  • the centering and stabilization of the storage of the vessels 1 provided in a stirring device of the type specified above enables the attachment of treatment devices 11 in the manner of the cooling head according to FIGS. 11 and 12, the center of gravity of the rotating device parts being relatively high. At the same time, the device is very quiet over a wide speed range.
  • FIG. 13 shows an example of a further treatment device 12 in the form of a heater 54 surrounding the lower part of the vessel 1.
  • the heater is fastened in the form of a cylindrical jacket on the top of the device base 13. Due to the good centering and stabilization of the rotary bearing of the vessels 1, the heater 54 can enclose the outer surface of the vessel 1 at a short distance and is therefore more effective when treating the contents of the vessel.
  • a cooling head of the type shown in FIG. 11 is used in connection with a further treatment device in the form of a heater according to FIG. 13, a liquid to be treated is evaporated in the vessel 1 in its lower region and in the upper region on the heat A3
  • treatment devices 11 should be independent of the direction of rotation.
  • each opening 192 has a base plate 191 which is provided with cylindrical openings 192.
  • a plug 193 is inserted into each opening 192 from below, which is provided on its upward-facing surface with a flat bearing shell 194 which, together with the spherical lower end of the vessel 195, forms vertical support means for a liquid to be treated and low centering forces on the lower one End of the vessel 195.
  • a single elastic web 196 protrudes upwards to a slotted ring 197 which encompasses the vessel wall in its already essentially cylindrical area and which serves to gently seal the vessel in the event of the vessel 195 starting up in the event of vibrations and chattering of the vertical support means and to reduce vibration back to the central position.
  • Fabric can be made to keep the lower end of the vessel centered and enable resonance areas in which vibrations can occur to be passed through without difficulty when the speed is increased.
  • a plate arrangement 199 is held above the base plate 191 by means of schematically indicated frame parts or supports 198, which has an upper ferromagnetic yoke plate 1911, each with an opening for the passage of the vessel 195 and a cover 1910 placed thereon, and a lower pole shoe arrangement 1912 around it respective breakthrough of grouped pole pieces, between the yoke plate 1911 and the pole piece arrangement 1912 extending pole cores 1913 and each surrounding excitation coils 1914.
  • the excitation coils 1914 are excited by an electrical control device (not shown in the drawing) in such a way that a magnetic rotating field is formed over the upwardly bent pole pieces of the lower pole shoe arrangement 1912, which are grouped around the openings in the plate arrangement 199.
  • the cover 1910 placed on the upper end of the vessel extends with a tubular extension 1916 into the mouth of the container 195, the tubular extension 1916 being chamfered at the lower end towards the wall of the container 195 and forming a partial closure of the upper opening of the vessel in the manner that the liquid filling pushed up by the centrifugal forces at high speed of the vessel 195 is retained in the vessel and is not thrown out of the mouth of the opening.
  • the lid 1910 extends axially downward along the vessel wall and is provided at its lower edge with a flange 1917 which keeps a distance from the vessel wall and in which a magnet system ring 1918 is embedded.
  • the design of the magnet system ring 1918 is as based on ZA
  • the magnet system ring 1918 pulls the arrangement out of the vessel 195 and the lid 1910 in the direction of the respective circular sector-shaped pole pieces 195 surrounding the respective opening of the plate arrangement 199. It thereby holds the lower end of the vessel 195 pressed against the flat bearing socket 194 and exercises on it Upper end of the vessel also has a centering effect, since any deviation of the longitudinal axis of the vessel from the vertical position causes the end face of the ferrite magnets to move in a circular arc around the point of contact of the lower end of the vessel on the bearing pan 194 and thereby move away from the end faces of the pole pieces 1915, which is appropriate Directives to restore the vertical position of the vessel 195 leads. When a rapidly rotating magnetic rotating field is generated, the magnet system ring 1918 is carried along by this rotating field and thereby sets the vessel 195 and the lid 1910 in a corresponding rotation.
  • Each of the openings in the plate arrangement 199 is provided with a liner 1923 which is integrally attached to an upper plastic cover 1922 of the plate arrangement and which, together with the cover 1922, protects the drive means located in the plate arrangement 199 from environmental influences.
  • a circumferential flange 1924 protrudes upwards from the sufficient distance from the vessel 195 and the surfaces of the cover 1910 holding the cover 1910, which cooperates with the inner surface of the flange 1917 of the cover 1910 as an emergency bearing and additional centering means, whereby the rotating flange 1917 starts up with it Inner surface against the outer surface of the flange 1924 and a beginning rolling of the parts just mentioned in the event of chatter phenomena in connection with gyroscopic forces of the structural unit formed from the vessel 195 and the lid 1910, causing the flange 1924 and the flange 1917 to come out of contact again and chatter phenomena to subside.
  • the rotary drive for the vessel 195 and the lid 1910 is not achieved by a magnetic field generation system located near the upper end of the vessel, but rather by drive means located near the lower end of the vessel, so magnetic centering and Stabilizing means can be provided using the cover 19 "10 according to Fig. 14.
  • a ferromagnetic counter ring is embedded in the lower part, in such a way that in any case that The container and the lid are in turn pulled by the magnet system ring 1918 against the bearing socket 194 and the aforementioned centering effect is achieved.
  • the vertical support means and rotary holder means are formed on a support 1927, which has a receiving space in an upper section for receiving the lower end of the vessel 195 has bounding, elastic fingers 1928 which spring into the recesses 1930 with locking cams 1929 when the vessel 195 is pressed into the carrier 197.
  • the locking troughs 1930 in the wall of the vessel 195 have the additional advantage that they bring about an increased mechanical coupling between the vessel 195 and the liquid to be treated and thus an increased mixing thereof.
  • the carrier 1927 In its lower section, the carrier 1927 is provided with an axially upwardly extending bore 1931, the upper end of which is designed as a bearing socket 1932.
  • the curvature of the bearing pan 1932 can be made relatively flat.
  • a bearing pin 1933 is pressed resiliently, which protrudes concentrically in the opening 192 of the base plate 191 and, together with the bearing pan 1932 of the carrier 1927, forms the vertical support means for the vessel 195, which is otherwise attached to 14 can be supported, centered, vibration-damped and driven at its upper end in the manner shown in FIG. 14.
  • a plug 193 is in turn inserted as a centering and stabilizing means in the opening 192 of the base plate 191, via which a centering and damping ring 197 is held by elastically flexible webs 196 and which holds the cylindrical outer wall of the lower section of the carrier 1927 surrounds with comparatively little play and returns the carrier 1927 and thus the lower end of the vessel 195 to a central position when vibrations occur.
  • a radial flange 1934 of the carrier 1927 causes the carrier to be held back by a run-up of the radial flange 1934 against a cover plate 1935 reaching over the opening 192 of the opening 192 of the base plate and not by the base plate 191 is separated.
  • a flat bearing pan 194 which cooperates with the spherical lower end of the vessel 195 as a bearing and is provided on an approximately cylindrical body 1936 projecting from the base plate 191 .
  • a structural unit 1938 is connected, which carries on its upper side a yoke plate 1939 made of ferromagnetic material, each of which has an opening for the passage of the lower end of the vessel 195 the bearing pan 194 is provided.
  • the breakthrough of the yoke plate 1939 has a circumferential, upward-facing flange which faces a magnet system ring 1918 of the type described in connection with FIG. 14.
  • This magnet system ring 1918 is embedded in a ring 1940 made of tough-elastic plastic, which is pushed onto the lower end of the vessel 195.
  • the 195 pull down from the ring 1940 due to the interaction between the magnet system ring 1918 and the peripheral flange of the ferromagnetic yoke plate 1939, which acts as a ferromagnetic counter ring, against the bearing pan 194 and at the same time the lower end of the vessel is drawn due to the interaction between the magnet system ring 1918 and the part of the yoke plate 1939 serving as a ferromagnetic counter ring.
  • the rotational holding, centering and stabilizing means provided on the upper end of the vessel 195 of the embodiment according to FIG. 16 have sufficiently large diameters of the respective openings on the frame side in order to remove the vessel 195 together with the ring 1940 to allow from the stirring device.
  • the construction unit 1938 connected to the base plate 191 contains on the underside of the ferromagnetic yoke plate 1939 cylinders 1941 and pistons 1942 guided therein, which can be acted upon with pressure medium on the underside by pressure medium sources 1943 and can be moved upwards against spring force, so that a plate 1945, each provided with a cylindrical tube extension 1944, can be lifted axially upwards and lowered again by the spring means when the pistons are relieved in 1942.
  • the respective tube extension 1944 assigned to a vessel 195 has a slightly larger diameter than the cylindrical part of the wall of the vessel 195, such that when the plate 1945 and the tube extension 1944 are raised, the inner wall of the latter is particularly so when these are connected to a tube in FIG. 16 indicated interference hump is provided, the lower end of the vessel 195 to rattle, which is very advantageous for performing particularly intensive mixing operations in the liquid to be treated within the vessel 195.
  • the conscious stimulation of ratter Apparitions for predetermined operating sections is of independent importance regardless of the speed of the vessel 195. It should be expressly pointed out here that the mechanism for lifting the plate in 1945 and the pipe extension in 1944 is only described as an example and that many other mechanisms can be provided here for arbitrarily and reproducibly triggering chatter phenomena.
  • a ring body which is held relatively rigidly with respect to the frame is moved into a section of the outer wall of the vessel 195, in which the ring body has a small radial distance from the outer wall of the vessel, so that during operation it comes into contact with the ring body essentially instantaneously and then Triggers movements that are undesirable in other operating modes and phases.
  • the embodiment according to FIG. 17 contains, as vertical support means, a stopper or base 193 with a flat surface, projecting from a base (not shown in FIG. 17), on which the lower, dome-like end of the vessel 125 is seated.
  • a ring 197 which is guided vertically on the stopper or base 93, is used for centering, is pressed with very little force by a wrap-around helical spring 196a against the lower end of the vessel and centers it as the vessel rotates and effectively dampens vibrations.
  • the vessel 105 has an all-round bulge, in such a way that a shoulder is formed against which an annular body 1918a made of plastic is supported, which is pushed onto the mouth of the vessel 195 from above and the one magnet system ring 1918 includes the structure of which has been previously described for the magnet system ring 42 with reference to FIG. 10.
  • the opening between the pole pieces and in a yoke plate belonging to the magnetic field generation system is lined by a plastic sleeve which is pressed into an opening in a stainless steel plate covering the magnetic field generation system.
  • FIG. 18 shows an embodiment of the lower part of a stirring device of the type specified here, in which, similar to the embodiment of FIG. 15, a carrier 1927 made of tough elastic plastic is provided with fingers 1928 carrying latching cams 1929 at the upper end, between which a Recess troughs 1930 provided receptacle 195 with its lower end can be snapped into place.
  • a carrier 1927 made of tough elastic plastic is provided with fingers 1928 carrying latching cams 1929 at the upper end, between which a Recess troughs 1930 provided receptacle 195 with its lower end can be snapped into place.
  • drive means similar to that of FIG. 14 are provided here in the region of the lower end of the vessel 195.
  • a spring-loaded bearing journal 1933 in turn protrudes axially upward from the base plate 191 into a bore 1931 in the lower section of the carrier 1927, the bore 1931 being closed off by a bearing socket 1932 which cooperates with the tip of the bearing journal 1933.
  • a magnet system ring 1918 is embedded in the carrier.
  • the circular sector-shaped pole pieces 1915 of the pole pieces of a magnetic field generating system which has excitation coils 1914 between the space occupied by the carrier 1927 to generate a magnetic rotating field generated over the end faces of the pole pieces 1915 and which between them surround the pole pieces 1912 and a ferromagnetic yoke plate 1911, similar to that described in connection with the embodiment according to FIG. 14, but with the embodiment according to FIG. 18, as already mentioned, the drive system here near the lower end of the Vessel 195 is installed.
  • the circular arrangement of the end faces of the pole pieces 1915 has a larger diameter than the overlying circular arrangement of the end face of the magnet system ring 1918, whereby it is achieved that whenever the carrier 1927 is about with the vessel 195 detached in order to tilt the contact point between the bearing journal 1933 and the bearing pan 1932, essential areas of the opposing one another Remove the end faces of the magnet system ring 1918 on the one hand and the pole piece arrangement 1915 on the other hand, and this leads to straightening forces which straighten the carrier 1927 relative to the stationary construction above the base plate 191.
  • the radial flange 1934 of the carrier 1927 according to FIG. 18 interacts with the plate 1935 which is fixed to the frame and lies above the yoke plates 1911 in the same way as has already been described for the embodiment of FIG. 15. The same applies to the resilient support of the journal 1933.
  • Heat is transported from the base plate, for example, by conduction into the conductor pin and then by radiation and residual convection to the carrier and from there finally via the wall of the vessel into the liquid to be treated.
  • the surfaces which transmit heat and transmit heat through radiation and residual convection are enlarged on the side of the heated base plate and on the side of the support by cross-sectionally intermeshing sleeve parts which are coaxial with one another.
  • This enlargement of the area can also be achieved by means of ring disks which protrude radially from the carrier and corresponding ring disks which protrude radially inwards and which are designed for assembly in a split arrangement.
  • the specified design vessel speeds up to over 8000 1 / min. permitted, such high speeds leading to acceleration forces acting on the liquid to be treated of more than 500 times the acceleration due to gravity. These acceleration forces effectively prevent foaming and have a significant influence on the treatment result. It is also significant that the high speeds of the vessel or the vessels cause them to behave like very stable gyroscopes at point support at their lower end or near their lower end, which are read by the centering and stabilizing means specified here. diglich be held in their stable vertical position by gentle correction movements, with any swinging movements that occur can be brought to an extremely rapid decay.
  • the invention also includes embodiments of the type described, in which insert vessels for receiving the liquid to be treated are used in the respective vessels, which can be made of plastic or glass or stainless steel, in such a way that the vessels 5 form an integral part of the device in such embodiments .
  • the device shown in FIG. 19 contains a base plate 161 on which a device base is supported via feet 163. 3-i
  • a magnetic field generation system 164 is located in the device base 162, its excitation coils 165 via a cable
  • the excitation coils 165 are connected to a control device by means of which the excitation coils 165 can be supplied with electric current in such a way that the magnetic field generation system is able to generate an intensive rotating magnetic drive field in a certain area of the device base 162, the rotational speed and direction of rotation of which can be set or adjusted arbitrarily is changeable.
  • the magnetic field generation system 164 is cast, for example, in plastic within the device base 162 and contains the cores 16 surrounded by the excitation coils 165, a magnetic return plate 169 provided with an opening 168 and at the upper ends of the cores
  • the openings or openings 168 and 1610 of the magnetic field generation system 164 correspond to a continuous opening 1612 in the overall body of the device base 162, the radially inner ends of the pole pieces 1611 being located near the upper opening of the opening 1612 within the plastic sealing compound behind the inner surface of the opening. Accordingly, the intense rotating magnetic drive field is generated precisely in this area of the opening 1612.
  • a cover plate 1613 is placed on the device base 162, which has an opening 1614 corresponding to the opening 1612, along the edge of which a sleeve 1615 is integrally attached, which extends downward as a lining through the opening 1612 .
  • the cover provided with the sleeve 1615 plate 1613 can be removed from the device base for cleaning purposes and protects the device base from contamination by liquid dripping from treatment vessels.
  • the cover plate 1613 is provided with depressions 1616, into which feet 1617 of a frame 1618 can be inserted for its precise positioning.
  • the frame 1618 contains supports 1619 spaced apart and provided with openings 1620 and 1621.
  • the frame 1618 can also be designed such that the supports 1619 are not supported against the cover plate 1613 and the device base 162, but with extended feet passed past the equipment base 162 to the base plate 161.
  • Such a modified embodiment can be particularly advantageous if the entire device is designed for the simultaneous handling of a large number of treatment vessels in connection with a device base containing a multiple magnetic field generation system.
  • the mounting lug 1627 existing unit used.
  • the mounting lug 1627 has, in the manner shown in FIG. 19, arms which extend upwards and which on their inner side te are profiled so that they grip and support the treatment vessel 1626 securely.
  • the holding arms of the mounting projection 1627 can be pushed through cutouts of the opening 1624 of the plate 1621 indicated by dash-dotted lines.
  • a cylindrical lower part of the mounting attachment is provided with a material bore 1628 which extends upwards from its lower end, the upper end of which forms a bearing socket which cooperates with the bearing tip 1623 of the mounting pin 1622 for a tip storage of the structural unit consisting of the mounting attachment 1627 and the treatment vessel 1626.
  • a magnetic rod 1629 is cast into the cylindrical part of the mounting projection 1627, which is located in the position of use of the arrangement shown in FIG. 19 at the level of the pole pieces 1611 within the device base 162 and thus the most intensive part of that Magnetic field generation system 164 generated rotating magnetic drive field is exposed.
  • the conically shaped opening 1625 of the plate 1620 surrounds a correspondingly conically shaped section of the mounting lug 1627 with sufficient play, but is dimensioned such that when the frame 1618 is lifted off the cover plate 1613 the treatment vessel 1626 and the mounting lug 1627 are also removed from the device base 162 and the bearing pin 1622 are lifted off.
  • the opening 1624 of the plate 1621 also has sufficient play with respect to the outer wall of the treatment vessel 1626, since if the speed of the treatment vessel and its contents is sufficient, gyroscopic forces are exerted on the attachment shoulder 1627 and the treatment vessel 1626. support the standing unit. It may be expedient that only short circumferential portions of the inner edge of the opening 1624 distributed around the circumference extend close to the wall of the treatment vessel 1626 in order to avoid rattling.
  • the magnetic field generation system 164 of the device base is controlled in such a way that the treatment vessel 1626 with its liquid filling 1630 runs up rapidly from standstill to a speed of, for example, 2000 revolutions / minute, then layers of liquid adhere to the inner wall of the treatment vessel and the hollow cylindrical ones are sheared Layers of liquid take place successively up to the central longitudinal axis of the treatment vessel. If the rotating arrangement is then braked, the radially inner, hollow cylindrical liquid layers maintain their rotational speed once reached, while the liquid layers near the wall are braked more quickly, so that shearing and thus mixing of the liquid filling of the treatment vessel takes place again.
  • the embodiment of a device of the type specified here differs from that according to FIG. 19 essentially in that within the device base 162 the magnetic field generation system 164 19 is installed in reverse, in such a way that the pole pieces 1611 are located on the underside of the device base 162 and the radially inner ends of the pole pieces face the device base in the region of the lower opening of the opening 1612.
  • the permanent magnet body which forms the drive part arrangement of the mounting lug 1627, is fastened to the lower end of the cylindrical section of the mounting lug 1627 and here has the shape of a diametrically magnetized permanent magnet ring 1631, the bore of which is upwards in diameter from the cylindrical section of the mounting lug reaches corresponding blind hole 1628.
  • the bearing pin 1622 which rises from the base plate 161, extends into the blind bore 1628 up to the bore end serving as a bearing socket.
  • lateral arms formed thereon by clipping into a circumferential groove at the lower end of the treatment vessel 1626, establish the connection to the treatment vessel, of which only the lower section is shown in FIG. 21.
  • a frame for the further support of the treatment vessel can be provided in the manner of frame 1618 of the embodiment according to FIG. 19.
  • the device according to a further embodiment shown only partially in section and in a side view in FIG. 22 differs from that according to FIG. 19 primarily in that the mounting projection 1627 in the device according to FIG. 22 does not have a material bore 1628 but is provided with a bearing tip 1633 which is inserted into a conical countersink 1634 of the base plate 161 which serves as a bearing socket 26
  • the counterbore 1634 is positioned coaxially with the opening 1612 of the device base 162.
  • the permanent magnet body 1629 in the embodiment according to FIG. 22 is similar to the embodiment according to FIG. 19 in the area of the upper opening of the opening 1612 of the device base 162 and is located here in the space between the opposing pole pieces 1611.
  • devices of the type proposed here can be designed in such a way that a plurality of treatment vessels are rotatably mounted above a device base, which can generate a corresponding number of moving magnetic drive fields, each of which interacts with the drive part arrangements associated with the individual treatment vessels .
  • Each of the treatment vessels and the mounting lugs provided thereon is assigned to a bearing device for the rotatable mounting of the treatment vessel and mounting lug.
  • FIG. 23 represents a construction which is modified compared to the embodiments according to FIGS. 19 to 22.
  • the magnetic field generation system 164 located in the device base 162 according to FIG. 23 has a similar structure as shown in FIG the pole pieces 1611, as can be seen from the illustration of FIG. 23 in connection with the supervision of FIG. 24, upwardly bent parts 1611a, which are grouped around the upper opening 1610 of the magnetic field generation system.
  • the remaining parts of the magnetic field generation system namely the magnetic yoke plate 169 with the lower opening 168, the cores 167 projecting from the yoke plate, the excitation windings 165 and a cover plate 1613 placed on the device base 162 supported by feet 163 are in accordance with the construction according to FIGS and 20 match.
  • a cup-shaped lining 100Z made of plastic is inserted into the opening 1614 of the cover plate 1613, which is coaxial with the openings 168 and 1610 of the magnetic field generation system 164, and a bearing pin 1622 protrudes from the thick-walled base thereof.
  • the mounting projection 1627 for the or each treatment vessel or test tube 1626 has the shape of a two-part hub, the inner hub part of which is provided with a longitudinal bore and can be plugged onto the bearing pin 1622 with play.
  • a magnetic ring 101Z is held between shoulders of the hub parts and is diametrically magnetized similarly to the embodiment according to FIG. 21. This is indicated in the top view of FIG. 24, parts of the cup-shaped lining 100Z being omitted here to simplify the illustration and the permanent magnet ring 101Z being drawn in with an enlarged diameter.
  • the outer hub part of the mounting lug 1627 carries a cover which, with a flange, engages over the upper end of the cup-shaped lining 100Z and prevents moisture from penetrating into the interior of the cup-shaped lining 100Z. Finally carries the mounting lug 1627 from the aforementioned lid upwardly projecting holding arms or receiving parts which grip the lower end of the associated treatment vessel 1626.
  • the drive means with the device base 162 provided with a breakthrough and containing the magnetic field generation system 164 and the permanent magnet ring 101Z provided on the mounting attachment 1627 also form the vertical support means for the treatment vessel 1626 and its filling, because the magnetic field which forms between the pole piece parts 1611 is so intense in the axial region of the opening of the device base that the permanent magnet ring 101Z and the hub parts of the mounting attachment 1627 as well as the treatment vessel 1626 with filling are held in suspension without the bearing pin 1622 the mounting bracket 1626 granted axial support.
  • FIGS. 25 and 26 show a modification or further development of the cup-shaped lining 100Z or the mounting attachment 1627 compared to the embodiment according to FIG. 23.
  • the device base and the magnetic field generation system can again have the shape shown in FIG. 23 and act with the respective one generated magnetic rotating field on the diametrically magnetized permanent magnet ring 101Z.
  • this is pushed onto an integral hub of the mounting projection 1627 and held in place by a snap ring.
  • the cup-shaped liner 100Z which fits into the opening 1614 of the cover plate 1613 the device base is pressed in, serves to support the bearing pin 1622, which is inserted here into a hole in the bottom of the lining 100Z and is fastened by means of a snap ring and nut.
  • An eccentric receptacle for a treatment vessel 1626 protrudes from the upper side of the plate of the mounting projection 1627 which overlaps the upper mouth of the lining 100Z, in such a way that, with the cooperation of a rotary holder provided at the upper end of the treatment vessel 1626 and coaxial to the bearing pin 1622, the treatment vessel 1626 is made to tumble can be initiated, which is desirable for certain treatment procedures in a liquid filling of the treatment vessel 1626.
  • the upper end of the bearing pin 1622 is at a distance from the end of the coaxial bearing bore of the hub of the mounting boss 1627, and a distance is also formed between the lower end of the hub and the bottom of the cup-shaped lining 100Z, from which it can be seen that in operation magnetic rotating field of the magnetic field generation system keeps the permanent magnet ring 101Z and also the mounting attachment 1627 firmly connected thereto in suspension.
  • the shape of the mounting bracket 1627 in the embodiment according to FIG. 26 essentially corresponds to the relevant training in the embodiment from FIG. 23. The same applies to the shape of the cup-shaped lining 100Z and to the magnetic field generation system which interacts with the diametrically magnetized permanent magnet ring 101Z. 26 is not directly against the wall of an axial bore of the hub of the mounting bracket 1627, but is guided with little play through a sleeve 102Z inserted into this axial bore, which in each case has conical surfaces on the end face. ⁇
  • Centering rings 103Z which are provided with corresponding frontal conical surfaces, bear against these conical surfaces, which are provided at the upper end and at the lower end of the bearing pin 1622 and which are provided with slight pressure by a helical spring 104Z provided at the lower end of the bearing pin 1622, which wraps around the bearing pin 1622 are biased towards each other.
  • a secure, rotationally fixed connection between the centering rings 103Z and the bearing pin 1622 is not necessary. Due to the support force exerted by the magnetic field generation system on the permanent magnet ring 101Z, the centering rings 103Z and in particular also the helical compression spring 104Z do not have to absorb axial support forces due to the weight of the mounting attachment, the treatment vessel used therein and its filling.
  • centering rings 103Z with their tapered end faces in cooperation with the tapered end faces of the sleeve 102Z cause centering and vibration damping even at very high speeds of the magnetic rotating field and thus very high speeds of the mounting attachment and the treatment vessel.
  • FIGS. 27 to 32 similarly to the embodiments according to FIGS. 23 to 26, make use of the support effect which emanates from the intense rotating magnetic field which is built up by a magnetic field generation system of a device base provided with continuous openings and with a magnetic body or magnetic ring cooperates, which is provided on a treatment vessel or a coupling attachment coupled to it.
  • the construction of the embodiments according to FIGS. 27 to 32 realizes a stirring and mixing principle of independent importance without complicated vertical support means and with extremely simple design of the rotary holder means, which will be discussed in detail below.
  • a device base designated here with 110Z which, with regard to the design of the magnetic field generation system with a magnetic yoke plate or yoke plate, cores which protrude away therefrom, excitation coils surrounding the cores and pole pieces attached to the cores, the structure of the 23 corresponds, but in the magnetic field generation system the magnetic yoke plate or yoke plate is arranged on the top and the pole pieces on the bottom.
  • openings in the magnetic yoke plate or yoke plate and in the arrangement of the pole pieces which delimit a cylindrical, vertical space lined with a sleeve means a larger diameter than in the embodiment according to FIG. 23, as can be readily seen from FIG 27 recognizes.
  • the device base 110Z is supported by feet 111Z at a greater height above a base plate 112Z.
  • a hollow-cylindrical treatment vessel holder 114Z is inserted into the cylindrical space designated here as 113Z within the sleeve lining the through-channel of the device base 110Z, the outer diameter of which has a much smaller diameter than the cylindrical space 113Z, as shown in FIG. 27 and also partly in a horizontal section 28 is shown.
  • the treatment vessel holder 114Z carries at its upper end a radial flange 115Z, the outer diameter of which is larger than the diameter of the cylindrical space 113Z and which is seated on the upper end of the lining sleeve of the cylindrical space 113Z when the device is switched off.
  • a ring 116Z made of ferromagnetic material is embedded in the treatment vessel holder 114Z. 3
  • the bore of the hollow cylindrical treatment vessel holder 114Z and the opening of the ferromagnetic ring 116Z have essentially the same diameter.
  • the lower part of an essentially test tube-shaped treatment vessel 117Z is pushed through the treatment vessel holder 114Z and the ferromagnetic ring 116Z and is supported with a collar 118Z against the upper side of the treatment vessel holder 114Z.
  • this Near the upper opening of the treatment vessel 117Z, this has an all-round constriction 119Z, which fulfills the function already explained, for example, with reference to FIG. 17 and prevents a filling of the treatment vessel 117Z from being thrown out when the liquid filling is conveyed by the centrifugal forces on the wall of the treatment vessel climbs up.
  • the ferromagnetic ring 116Z is drawn in the direction of the wall of the cylindrical space 113Z and the ferromagnetic ring 116Z is also put together with the treatment vessel holder 114Z in the region between the pole pieces of the magnetic field generation system, as can be seen in FIG. 27 from the distance between the radial flange 115Z and the upper end of the lining sleeve of the cylindrical space 113Z.
  • the treatment vessel holder 114Z When the magnetic rotating field progresses in the circumferential direction by correspondingly controlling the excitation windings of the magnetic field generation system, the treatment vessel holder 114Z, as indicated in FIG. 28 by the radially outer arrow, rolls on the inner wall of the cylindrical space 113Z, with the treatment vessel 117Z simultaneously rotating in accordance with the shown in Fig. 18, radially inner arrow.
  • the arrangement is such that, during operation, the center of gravity of the filling deformed from the treatment vessel 117Z and the filling deformed under the centrifugal forces lies in the axial area occupied by the device base 110Z.
  • the arrangement shown in FIG. 27 therefore does not require any additional rotary mounting and vertical support means and is distinguished by a particularly simple and clear structure.
  • a treatment vessel 120Z which has a central section of larger diameter and a lower extension 121Z of smaller diameter and a neck extension of the same smaller diameter leading to the container opening, this neck extension being designated 122Z.
  • a ferromagnetic ring 123Z is pushed onto the lower attachment 121Z of the treatment vessel 120Z, which is located together with the lower attachment 121Z of the treatment vessel 120Z in a cylindrical space, also referred to here as 113Z, within a lining sleeve of an opening in the magnetic field generation system, which is constructed accordingly 27, as in the embodiment according to FIG. 27, but here again the pole pieces are located on the top of the device base designated 110Z.
  • the ferromagnetic ring 123Z is at the level of the pole pieces.
  • a bearing ring 124Z is fixed in the cylindrical space 113Z in the cylindrical space 113Z so that the through opening of the ring 124Z is coaxial with the cylindrical space 113Z.
  • a holding plate 125Z is located at a distance, which is greater than the axial length of the central section of the treatment vessel 120Z, on a frame (not shown) connected to the device base, which is connected to the axis of the ring 124Z and the cylindrical space 113Z coaxial opening is provided.
  • a bearing support ring 126Z is inserted into this opening, the through opening of which has the same diameter as the through opening of the bearing support ring 124Z.
  • the magnetic field generation system generates a rotating magnetic field in the cylindrical space 113Z of the device base, then the ferromagnetic ring 123Z on the lower shoulder 121Z of the treatment vessel 120Z is pulled on one side against the inner wall of the cylindrical space 113Z and is guided around this inner wall in synchronism with the magnetic rotating field .
  • the outer wall of the lower neck 121Z rolls on the inner circumference of the bearing support ring 124Z and at the same time the outer wall of the neck attachment 122Z of identical diameter of the treatment vessel 120Z rolls on the inner circumference of the bearing support ring 126Z, as a result of which the treatment vessel 120Z executes corresponding movements.
  • the ratio between the rotation of the magnetic rotating field and the counter-rotation of the treatment vessel about its longitudinal axis can be coordinated by a corresponding choice of the diameter of the bearing support rings on the one hand and the sections of smaller diameter of the treatment vessel on the other hand.
  • magnetic field generation systems are provided within the device base 110Z, in which pole pieces 31, which can be seen, for example, from the top view of FIG. 31, are fastened to the cores, which are in each case wrapped by the excitation coils, both on the top and on the underside of the excitation coils.
  • the embodiment according to FIGS. 30 and 31 thus contains no magnetic yoke plate or yoke plate of the magnetic field generation system.
  • the treatment vessel holder 114Z of the embodiment according to FIGS. 30 and 31 differs from the corresponding part of the embodiment according to FIGS.
  • an axially polarized permanent magnet ring 128Z is now embedded in the treatment vessel holder 114Z in such a way that the permanent magnet ring 128Z comes to lie in the axial area between the upper and lower pole pieces 127Z during operation.
  • the excitation windings of the magnetic field generation systems are subjected to current waves in such a way that in the cylindrical spaces 113Z of the device base 110Z assigned to the individual treatment vessels, opposing magnetic rotating fields are created in pairs within a group of four, the axially magnetized permanent magnet rings 128Z are directed in the manner shown in FIG and cause the treatment vessel holders 114Z and the associated treatment vessels 117Z with the liquid fillings therein to rotate in opposite directions, in opposite phase, so that the vibrating forces and vibration forces within the four arrangements of treatment vessels balance each other. It goes without saying that this principle can also be applied to devices of the type discussed in connection with FIG.
  • the magnetic field generation systems have upper and lower pole pieces and the bearing support ring 124Z is in turn to be arranged below the level of the magnetic field generation system and interacts with an extension of the lower attachment of the treatment vessel.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)

Abstract

L'invention concerne un dispositif permettant de remuer, de mélanger ou d'agiter des liquides. Ce dispositif comprend un récipient (1) destiné à contenir le liquide. Ce récipient est allongé le long d'un axe sensiblement vertical et présente dans sa partie supérieure un orifice de remplissage. Le dispositif comprend également des moyens d'appui verticaux (2, 5) destinés à porter au moins une partie du poids du récipient (1) et de son contenu, des supports de rotation (7, 8) destinés à positionner et à guider le récipient (1) lorsqu'il effectue une rotation autour de son axe de symétrie sensiblement vertical et enfin des moyens d'entraînement (3, 4) destinés à produire la rotation du récipient. Des moyens de centrage et de stabilisation (9, 10), affectés aux supports de rotation (7, 8), produisent, dans un espace (S), des forces de centrage et de stabilisation s'exerçant sur le récipient.
EP98913671A 1997-03-06 1998-03-06 Dispositif permettant de remuer, de melanger ou d'agiter des liquides, notamment a des fins d'equilibrage de temperature, de concentration et de centrifugation Expired - Lifetime EP0966321B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE19709237A DE19709237A1 (de) 1997-03-06 1997-03-06 Einrichtung zum Rühren, Durchmischen oder Bewegen von Flüssigkeiten
DE19709236A DE19709236A1 (de) 1997-03-06 1997-03-06 Rühreinrichtung
DE19709236 1997-03-06
DE19709237 1997-03-06
DE19724046 1997-06-07
DE19724046A DE19724046A1 (de) 1997-06-07 1997-06-07 Rühreinrichtung
PCT/EP1998/001303 WO1998039089A1 (fr) 1997-03-06 1998-03-06 Dispositif permettant de remuer, de melanger ou d'agiter des liquides, notamment a des fins d'equilibrage de temperature, de concentration et de centrifugation

Publications (2)

Publication Number Publication Date
EP0966321A1 true EP0966321A1 (fr) 1999-12-29
EP0966321B1 EP0966321B1 (fr) 2001-11-07

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EP98913671A Expired - Lifetime EP0966321B1 (fr) 1997-03-06 1998-03-06 Dispositif permettant de remuer, de melanger ou d'agiter des liquides, notamment a des fins d'equilibrage de temperature, de concentration et de centrifugation

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Country Link
US (1) US6332705B1 (fr)
EP (1) EP0966321B1 (fr)
DE (1) DE59802061D1 (fr)
WO (1) WO1998039089A1 (fr)

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US7296924B2 (en) * 2004-02-17 2007-11-20 Advanced Analytical Technologies, Inc. Vortexer
US8211386B2 (en) 2004-06-08 2012-07-03 Biokit, S.A. Tapered cuvette and method of collecting magnetic particles
TWI301033B (en) * 2005-09-05 2008-09-11 Qisda Corp Display apparatus
US7731414B2 (en) * 2007-02-08 2010-06-08 Instrumentation Laboratory Company Reagent cartridge mixing tube
US7883265B2 (en) * 2007-06-01 2011-02-08 Applied Biosystems, Llc Devices, systems, and methods for preparing emulsions
TW200933555A (en) * 2008-01-25 2009-08-01 Chin-Sung Chang Rotary display stand
JP5557732B2 (ja) * 2010-12-28 2014-07-23 株式会社ヤクルト本社 混合装置
US9511334B2 (en) 2013-08-29 2016-12-06 Burrell Scientific LLC Clamp for a fluid container and method of use thereof
CN110102359B (zh) * 2019-05-29 2022-02-01 张丽 一种检验科防污样本储存装置

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US3415361A (en) 1966-12-22 1968-12-10 Miles Lab Test device and container therefor
US4390283A (en) * 1979-09-04 1983-06-28 Beckman Instruments, Inc. Magnetic strirrer for sample container
SE8001912L (sv) * 1980-03-11 1981-09-12 Clinicon Ab Anordning for vibrering av provror
US5195825A (en) * 1988-05-09 1993-03-23 Gene-Trak Systems Device for mixing at least one aqueous fluid substance
US5399013A (en) * 1994-03-07 1995-03-21 Sawyer; Michael A. Mixing device
DE9406450U1 (de) * 1994-04-18 1994-09-29 Herz, Helmut, Dr.-Ing., 80997 München Magnet-Rühreinrichtung
DE29709966U1 (de) * 1997-06-07 1997-08-14 Herz, Helmut, Dr.-Ing., 85764 Oberschleißheim Rühreinrichtung

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Also Published As

Publication number Publication date
US6332705B1 (en) 2001-12-25
DE59802061D1 (de) 2001-12-13
WO1998039089A1 (fr) 1998-09-11
EP0966321B1 (fr) 2001-11-07

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