EP0966321A1

EP0966321A1 - Device for stirring, mixing and agitating liquids, especially also for the purposes of preliminary heating, concentration and centrifuging

Info

Publication number: EP0966321A1
Application number: EP98913671A
Authority: EP
Inventors: Helmut Herz; Klaus Kaufmann
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-03-06
Filing date: 1998-03-06
Publication date: 1999-12-29
Anticipated expiration: 2018-03-06
Also published as: US6332705B1; DE59802061D1; WO1998039089A1; EP0966321B1

Abstract

The invention relates to a device for stirring, mixing and agitating liquids, comprising a container (1) for holding the liquid which extends along an essentially vertical axis and has a filling hole, vertical supporting elements (2, 5) to support at least part of the weight of said container (1) and the substance, rotational holding elements (7, 8) for positioning and guiding said container (1) as it rotates around its essentially vertical symmetrical axis, and driving elements (3, 4) for rotating said container. Said rotational holding elements (7, 8) are provided with centering and stabilising devices (9, 10) which exert centering and stabilising forces acting on said container in an area (S).

Description

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.

In certain applications, it may be expedient to avoid the difficulties resulting from the separate handling of the stirring rod and its wetting by the liquid to be treated.

From the German utility model G9406450.4, a magnetic stirring device is known 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. 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. If the vessels are driven at a changing speed or, for example, with a periodically changing direction of rotation, 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.

It can be seen that 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.

Accordingly, it is an object of the invention to design a stirring device with the features of the preamble of claim 1 so that the vessel shows a smooth, vibration-free running in a wide speed range and this property also in a wide range maintains the height of the center of gravity relative to the vessel. In further training, the vessel speed range is to be expanded to over 8000 rpm.

This object is achieved by the characterizing features of claim 1.

In a special embodiment of the stirring device, 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.

Advantageous refinements and developments are characterized in the claims subordinate to claim 1, some of which are directed to features of independent importance, which will be referred to in more detail below.

It should be pointed out here that the individual features of the described embodiments within the scope of the invention, even if not expressly mentioned here, can be combined with one another in accordance with the understanding of the person skilled in the art, that is to say such combinations are also included in the invention.

It should also be mentioned that the drawings sometimes only show a single vessel, which is elongated along an essentially vertical axis of symmetry and has an upper filling opening, for receiving the liquid to be treated, but that all of the embodiments, as is known per se, are one Majority of such parallel contain mutually operable vessels and associated magnetic field generation systems.

In the case of the stirring devices specified here, 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. Despite this large bearing play, 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.

Embodiments are described below with reference to the drawings. Show it:

Fig. 1 is a schematic illustration of a stirring device of the type specified here.

2 is a partially sectioned side view of a practical embodiment of a stirring device with a schematic indication of the drive means,

3 to 6 in each case the upper part of a vessel, the associated rotary holder means and the centering and stabilizing means in embodiments modified compared to FIG. 2,

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,

9 is a plan view of the pole shoe arrangement of the electromagnetic drive of the device according to FIG. 12,

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,

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,

12 is a horizontal section through the radiator head, which is designed as a fan wheel,

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,

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;

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,

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

22 is a schematic, sectional side view of yet another embodiment, 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. In addition, near the lower end of the pin 2, there can be provided lower rotary holder runners 7, which provide lateral support for the pin 2 and the lower end of the test tube 1.

Near the upper filling opening 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.

It should be expressly pointed out here that in practical embodiments, a large number of magnetic field generation systems can be accommodated in the base of the device, the rotating magnetic fields of which each Rotary drive of a corresponding plurality of test tubes or similar vessels are suitable, which are mounted in a common frame provided with bearing holes.

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.

In the embodiment according to FIG. 1, 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.

Instead of the test tube 1, a metallic vessel or a plastic vessel can also be used, with lossy wall material allowing, for example, induction heating.

1 shows a stirring device of the type specified here in a very general form, 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 .

In the embodiment according to FIG. 2, 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. Together with the damping rings 18, 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 -λO

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. If the vessel 1 is set in rotation and begins to wobble, 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 -ΛΛ

an elastic compliance of the inner edge of the membrane disks 21 with respect to vibrations and shocks, which can be excited during the rotation of the vessel or test tube 1, 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.

5 contains as a centering and stabilizing agent in the region of the upper end of the vessel 1 a ring inserted into the bores 15 of the plate 16 with a collar which is supported against the upper edge of the bore 15 and points upwards therefrom, elastically 4 resilient fingers 21a, which absorb and dampen impact energy and vibrational energy when the vessel 1 begins to wobble during its rotation in a manner similar to the annular disk 21 of the embodiment according to FIG. 4, but essentially out of contact with the outer wall when the vessel 1 is centric of the vessel 1 remain.

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 • ΛV

Ring surface a south pole. 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.

It should be noted here that 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. According to an expedient shape of the vessels 1, these can be provided near the filling opening with a circumferential, wedge-shaped wall constriction, which fulfills a double function. On the one hand, 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. On the other hand, 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. 4, 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. These membrane disc fingers allow the vessels to be pushed in, the membrane fingers flexing elastically and finally snapping into the wall constriction in such a way that the radially inner ends of the diaphragm fingers then rest against the base of the constriction of the wall with little play and the upper rotary holder means as well as the centering and stabilizing means are realized in the manner described.

It should also be remembered that only a single vessel is shown in FIGS. 2, 4 and 6, but that in practical stirring devices of the type specified here, 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.

An explanation will now be given for the tendency of an upper rotary holder to rattle in stirring devices of known type, in which the upper rotary holder has no centering and stabilizing means and there is clearance S between the wall of the bore 15 and the outer wall of the vessel 1 face rigid materials.

If an unbalance of the filling of the vessel 1 during its circulation causes a frictional contact between the outer wall of the vessel and the inner wall of the bore 15 (FIG. 2), then the outer wall of the vessel is decelerated at the point of contact when the outer vessel rotates, so that the vessel 1 begins to roll on the bore wall, whereby the axis of rotation of the vessel 1 is deflected around the support point located at the lower end of the device 1. However, the gyroscopic forces are at an angle of

Effective at 90 ° to the direction of deflection. These forces fatally reinforce the pressure force at the point of contact and thus also the efforts of the upper part of the vessel 1 to roll on the inner wall of the bore 15. So there is a rapid rocking of the council the effect. Centering and stabilizing agents of the type specified here prevent this effect.

Another possibility, not shown in the drawing, for weakening the chattering effect is to provide upper rotary mounting means in the form of bearing pins which each extend into the mouth of the vessel 1 and which can be anchored to a plate. These bearing journals are provided at their lower end with a U bulge which, with an annular surface of the largest diameter, has a small distance from the inner wall of the upper part of the vessel 1. If, due to an imbalance in the filling of the vessel 1, there is contact between the circumferential bead of the bearing journal on the one hand and the inner wall of the vessel, the same deflections of the axis of rotation of the vessel 1 and the same gyroscopic forces occur as the vessel 1 rotates, as previously described. However, the latter do not increase the pressure force here, but rather cause the inner wall of the vessel 1 to be lifted off the peripheral bead of the bearing journal. Such a rotary holder of a stirring device of the type proposed here thus simultaneously forms centering and stabilizing means for a chatter-free upper mounting of the vessel 1.

An application (also not shown) of the principle just explained provides for 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. AS

The principle described above can be applied to the lower rotating holder means of a vessel in such a way that a cylindrical sleeve is pushed onto the lower end of the vessel, into which a bearing pin fastened on the device base extends and which is provided with an upper peripheral bead is. This circumferential bead cooperates with the inner wall of the sleeve in a very corresponding manner, as was described above with regard to the upper rotary bracket.

In addition, 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.

While the drive for the vessels 1 was provided near the lower end of the previously described embodiments, in the embodiment according to FIG. 7 this drive is provided in the area of the filling opening of the vessels 1. 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.

In the filling opening of the vessels 1, 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 upper part of the magnetic ring in the position of use, designated 43 in FIG. 10, forms a magnetic yoke. 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.

In operation, 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.

If an imbalance arises in the vessel 1, which attempts to pivot the longitudinal axis of the vessel around the point of contact between the vessel and the trough 44, the end faces of the pole shoes 40 on the one hand and the lower end face of the magnet ring 42 move away from one another in the lateral direction, whereby the force of attraction between the above-mentioned parts pulls the vessel 1 and the lid part 41 back into the symmetrical position shown in FIG. 7.

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. On Al

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.

8 is particularly suitable for stirring devices of the type specified here, in which the vessels are to be kept in a cooling bath or in a heating bath during the stirring treatment of their liquid filling. For this purpose, 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.

11 shows a treatment device 11 in the form of a cooling head, which is inserted into the mouth of a vessel 1, which can be part of a stirring device, for example according to one of FIGS. 1 to 6. 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. S

which communicates with the interior of the vessel 1 via downward and upward channels 52 of the heat exchanger body. During the circulation of the vessel 1 and the cooling head, 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.

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.

If 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

Exchange body 47 condenses again, such that there is a circulation in the vertical direction inside the vessel in addition to the stirring effects caused by the vessel rotation.

It should be noted here that the change in the direction of rotation and the change in the speed in all of the illustrated embodiments are significant for influencing the mixing result of stirring devices of the type specified here. For this reason, treatment devices 11 should be independent of the direction of rotation.

14 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.

From the stopper 193, 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. It has surprisingly been found that even at high vascular speeds of up to over 8000 1 / min. the centering and stabilizing means in the form of the slotted ring 197 held over the stopper 193 by means of the individual web 196, which ring, like the aforementioned web and the stopper, is made of tough-elastic synthetic material. 10

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.

Outside, 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

10 explained above. It contains an upper yoke ring made of ferromagnetic material and ferrite magnets which are axially attached to it from below and are axially polarized.

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.

Further centering and stabilizing means are provided at the respective upper mouth of the opening of the plate arrangement 199 in the form of a flexible plastic ring 1925 which is inserted into the upper mouth of the lining 1923 and with a damping inner flange when the lid 1910 and the eccentric rotation begins restores the central position.

14, 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. In this case, instead of the pole pieces, which are located around the respective opening of a plate arrangement held by supports 198, 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.

In the embodiment of FIG. 15, shown schematically in its lower area, 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.

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. 15, 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.

In the embodiment according to FIG. 15, 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.

In order to press the vessel into the space between the fingers in 1928 to remove the bearing structure from the journal

1933 and the bearing pan 1932 is not to be damaged TO

ensured that during this process the bearing pin 1933 retreats downwards until the lower end of the carrier 1927 runs against the plug 193, which can be fastened to the base plate 191, after which, with the vessel 195 now engaged, the bearing pin 1933 the entire arrangement is pushed back into the position shown in FIG. 15.

If the vessel 195 is removed from the clamping between the fingers 1928, 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.

16 contains, as vertical support means similar to the embodiment according to FIG. 14, 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 .

With the base plate 191, as indicated schematically by dash-dotted lines 1937 in FIG. 16, 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. In operation, 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. It should be mentioned here that 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. It is essential that 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. Near the upper end of the vessel 105, this is provided with an all-round constriction in the manner shown, which, as already mentioned above, can serve as protection against leakage of liquid thrown up by horizontal forces. Below this, 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. Below the magnet system ring 1918 and axially opposite this there is a magnetic field generation system in a plate-like, frame-fixed arrangement, the pole pieces 1912 being bent up with their free ends, similarly as was described for the embodiment according to FIG. 8. 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. The person skilled in the art will readily recognize details in this regard from FIG. 17.

However, a shielding ring 1918b made of ferromagnetic material embedded in the ring body 1918a as well as the magnet system ring 1918, which has the task of shielding intensive stray fields emanating from the magnet system ring 1918 from adjacent vessels and magnet system rings identical to the vessel 195, is of essential importance here do not mutually influence one another in a matrix arrangement with magnetic field generation systems and the vessels assigned to them, and circulate reliably in synchronism with the magnetic rotating field that is excited by the magnetic field generation system assigned to the vessel in question.

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. ZS

In this embodiment, drive means similar to that of FIG. 14 are provided here in the region of the lower end of the vessel 195. In particular, 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.

At the lower end of the section of the carrier 1927 provided with the bore 1931, a magnet system ring 1918 is embedded in the carrier. Opposite the lower end face of the magnet system ring 1918 with a certain vertical distance are 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.

It is remarkable in the embodiment according to FIG. 18 that 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.

It is stated here without a graphic representation in what way heat can be supplied to the liquid to be treated in the respective vessel 5 if the stirring device specified here is operated in a vacuum chamber. Because of the essentially non-contact rotary holder, centering and stabilization of a stirring device of the type specified, heat can only be transported to the vessel to be treated by radiation and residual convection.

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.

In another embodiment, 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. SO

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.

It should be mentioned here again that 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

166 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

167 attached to a pole pieces 1611 grouped vertically in line with the opening 16810, as can be seen in detail from FIG. 20.

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.

From Fig. 19 it can also be seen that 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.

It should be mentioned at this point that, according to a modification of the embodiment from FIG. 19, not shown in the drawing, 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.

A bearing pin 1622 with a bearing tip 1623 protrudes from the base plate 161.

Via the upper opening 1624 of the plate 1621 and the opening 1625 of the plate 1620 and finally through the opening 1614 of the cover plate 1623 and the opening 1612 of the device base 162, one of an approximately cylindrical treatment vessel is in the arrangement described so far

1626 and a bracket attachment coupled with this

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.

Above the end of the blind bore 1628, 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.

If 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.

By repeatedly, if necessary periodically accelerating, braking and accelerating in the opposite direction of rotation, an intensive stirring or mixing effect is achieved. This effect can be intensified if the treatment vessel 1626 is provided with inner wall projections or axially extending ribs or indentations or with a cross-section deviating from the circular shape.

The embodiment of a device of the type specified here, which is shown only schematically in its lower part in FIG. 21, 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. Accordingly, 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. 19, in the same way as in the embodiment according to FIG. 19, 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.

In the upper part of the mounting lug 1627, 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. Also in the device according to 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.

At the upper end of the treatment vessel 1626, this is guided through the opening 1624 of the plate 1621 of the frame 1618 (not shown in FIG. 22), with thin plastic wires extending radially inward into the opening 1621 from the edges thereof, the inner ends of which extend against the Support the outer wall of the treatment vessel 1626 and provide it with sufficient guidance for the rotation of the structural unit formed from the treatment vessel 1626 and the mounting projection 1627 about its longitudinal axis.

As previously indicated, 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.

The embodiment shown in 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.

In the embodiment according to FIG. 23, 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.

In the embodiment according to FIG. 23, 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.

23 are omitted from the illustration and can belong to the constructions described above.

It is noteworthy in the embodiment according to FIGS. 23 and 24 that 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. However, 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. In the embodiment according to FIG. 25, 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.

In operation, 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. Ψ

has. 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. Rather, the 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.

The embodiments according to 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. In addition, however, 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.

It has already been stated above that when test tube-like treatment vessels are rotated about their central longitudinal axis of the liquid layers near the inner wall of the vessel, liquid layers are initially taken more quickly during rotation, while liquid layers closer to the axis of rotation remain such that the shear forces in the liquid volume are mixed or others by the rotation favor promoted treatment processes. However, this effect is lost in the stationary state when the entire liquid finally rotates synchronously with the treatment vessel. For this reason, it is expedient in the embodiments described so far to vary the speed of the treatment vessels, in particular periodically, or to change the direction of rotation, if necessary.

However, if, for example, you move translationally into a cylindrical treatment vessel in such a way that all points of the central longitudinal axis of the treatment vessel describe circular orbits located in horizontal planes, it can be observed that a liquid filling due to such a translatory circular movement is initially pushed against the inner wall of the vessel due to the centrifugal forces and then begins to rotate in the vessel in the direction given by the translational circular movement.

If a rotational movement about the central longitudinal axis of the vessel is superimposed in the opposite direction on the translatory circular movement of the treatment vessel, then even in the stationary state, shear forces act continuously between liquid layers of the liquid filling that are adjacent in the radial direction, and a very intensive mixing effect is obtained. fr

To implement this principle, in the embodiment according to FIG. 27, a device base designated here with 110Z is provided 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. In addition, 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. 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.

If the excitation coils of the magnetic field generation system are supplied with current in such a way that the magnetic field generation system builds up an intensive rotating magnetic field in the cylindrical space 113Z, 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. 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.

In the embodiment according to FIG. 29, a treatment vessel 120Z is used, 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. Below the area occupied by the ferromagnetic ring 123Z, 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. Above the device base 110Z, 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.

If 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 . Here, 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. as previously explained for the treatment vessel 117Z of the embodiment according to FIGS. 27 and 28. 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.

It goes without saying that in the embodiments according to FIGS. 27 to 29, they are action vessel designed, vibrating forces or vibrations acting in the horizontal direction occur.

In a matrix arrangement made up of a large number of magnetic field generation systems and associated treatment vessels, overall such vibrating forces or vibrations can be avoided by arranging the individual magnetic field generation systems and associated treatment vessels in groups of four, in which the treatment vessels with their fillings and the parts of the drive means, which move with the treatment vessels, execute symmetrical and opposite phase movements.

For this purpose, in the embodiment according to FIGS. 30 and 31, which is comparable to the embodiment according to FIGS. 27 and 28, parts which correspond to one another also being provided with the same reference numbers, 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. Further, 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. 27 and 28 in that, instead of the ferromagnetic ring 116C, 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. If 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. 29, for which purpose instead of the ferromagnetic ring 123Z an axially lowered, axially magnetized permanent magnet ring is to be provided on the lower extension 121Z of the treatment vessel 120Z, 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.

Claims

Expectations

1. Device for stirring, mixing or moving liquids, in particular also for tempering,

Concentration and centrifugation,

with a vessel (1) elongated along an essentially vertical axis and having an upper filling opening for receiving the liquid,

with vertical support means (2, 5) for receiving at least a part of the weight of the vessel (1) and substance,

with rotary mounting means (7, 8) for positioning and guiding the vessel (1) when rotating about its essentially vertical axis of symmetry and

with drive means (3, 4) for generating the rotation of the vessel,

characterized in that centering and stabilizing means (9, 10) are assigned to the rotating support means (7, 8), which apply centering and stabilizing forces acting on the vessel in a clearance (S).

2. Device according to claim 1, characterized in that the centering and stabilizing means at the lower end of the vessel (1) are associated with rotating support means.

3. Device according to claim 2, characterized in that a cylindrical sleeve is pushed onto the lower end of the vessel, in the lower end of which extends from a device base bearing pin which has a circumferential bead facing the inner wall of the sleeve with play. 43

4. Device according to one of claims 1 to 3, characterized in that the lower end of the vessel (1) is designed as a bearing cap or is provided with a coaxial, integrally formed bearing pin (2), the lower end of the bearing cap or the bearing pin in a bearing parish (44) provided in the device base (13) engages, which forms the vertical support means with the lower end of the vessel or the pin (2).

5. Device according to claim 1, characterized in that the centering and stabilizing means are assigned to upper rotary mounting means.

6. Device according to claim 5, characterized in that the centering and stabilizing means of a ring with an inner edge, which faces the outer wall of the vessel with play (S), and damping flexible, vibration-absorbing intermediate parts are formed between the vessel and fixed to the frame Parts, in particular a holding plate (16), are provided.

7. Device according to claim 5 or 6, characterized in that the centering and stabilizing means of a resilient and damping resilient, membrane-like washer (21) which is clamped between two plate parts of a holding plate (16) and from the edge of the axis of symmetry to the vessel concentric bores (15) of the plate parts with their inner edge up to close to the outer wall of the vessel (1), or from a protruding from the vessel, a through hole (15) of a fixed mounting plate (16) and slidably resting on the edge of the bore damper Ring disc (19) are formed.

8. Device according to claim 5, characterized in that the centering and stabilizing means a magnetic ring (26) pushed onto the upper end of the vessel (1), the circular annular end face of which forms a south pole, and at least three along the edge of one Vessel symmetry axis concentric bore (15) of a holding plate (16) at the same circumferential distance arranged magnetic body (27) which have a magnetization in the same direction as the magnetization of the magnetic ring (26) and hold the magnetic ring by repulsive forces coaxial to the bore (15) mentioned ( Fig. 6).

9. Device according to claim 5, characterized in that the wall of the vessel in the region of the access opening has an inverted collar approach, into which a tubular extension extends from below, the cylindrical outer wall of which faces the cylindrical inner wall of the inverted collar part with little play and which of the edge of a hole of a holding plate which is approximately concentric with the axis of symmetry of the vessel.

10. The device according to claim 5, characterized in that at the upper end of the vessel (1) near its access opening is a slid onto the neck of the vessel or in a lid part inserted into the vessel mouth (41) embedded or anchored magnetic ring (42) on has its downward-facing, annular end face generated by corresponding magnetization, alternating north and south poles and on the side facing away from the lower annular face is provided with a magnetic return ring (43) that the lower annular end face of the magnetic ring (42) the end faces of pole shoes (40) bent upwards are opposed by poles generating a rotating drive magnetic field of a frame-fixed magnetic field generation system (37, 38, 39, 40), and that the lower end of the 5d

Vessel (1) is supported by the vertical support means such that the attractive forces between the magnetic ring (42) and the pole pieces (40) of the magnetic field generation system pull the vessel (1) against the vertical support means and a floating of the vessel (1) in one if necessary prevent the intended liquid bath.

11. The device according to claim 10, characterized in that the excitation windings (38) of the magnetic field generation system are arranged at a level near the access opening of the vessel (1) and that a magnetic return plate (36) which the lower ends of the pole cores (37 ) is connected to one another, either in the device base (13) or at a comparatively short distance below the pole shoes (40) (FIGS. 11 and 12).

12. The device according to claim 11, characterized in that a liquid trough is provided for receiving a liquid bath which surrounds the or each vessel (1) to a level below the excitation windings of the magnetic field generation system or the magnetic field generation systems.

13. Device according to one of claims 1 to 12, characterized in that in the mouth of the or each vessel (1) with the vessel rotating treatment device (11) is inserted.

14. Device according to claim 13, characterized in that the treatment device (11) has the shape of a cooling head made of thermally conductive material, which projects with a preferably ribbed heat exchange body (47) into the interior of the vessel and with one via the access opening of the vessel projecting fan wheel body (48) is connected, which as Ra- diallüfter works and through its connection with the heat exchange body (47) this for cooling the contents of the vessel (1) withdraws heat (Fig. 15 and 16).

15. The device according to claim 14, characterized in that through the fan wheel (48) and the heat exchange body (47) extends an axial channel connecting the center of the fan wheel with the interior of the vessel (1), in the course of which as a bubble and condensate - Satfalle serving chamber (51) is provided, which is connected to the interior of the vessel by means of return channels (52) running radially outwards and obliquely downwards.

16. Device according to claim 1, characterized in that the vertical support means of a bearing cap or - tip at the lower end of the vessel (195) or on a carrier coupled therewith on the one hand and from a lesser curvature than the bearing cap or bearing tip bearing pan (194 ) or a substantially flat bearing support surface on the other hand.

17. The device according to claim 1, characterized in that the vertical support means of a bearing pan (1932) of slight curvature or of an upward bore (1931) on or in a carrier (1927) coupled to the lower end of the vessel on the one hand and one of a device base or of a bearing journal (1933) with an upper bearing cap or bearing tip, on the other hand, is formed.

18. Device according to claim 1, characterized in that centering and stabilizing means in the region of the upper and / or the lower rotary holder contain a preferably free slotted plastic ring (197) surrounding the centered vessel (195), which is connected via at least one elastic bridge or spoke (196) to a support body (193) which can be fixed or fastened to the frame, or is prestressed against the lower end of the vessel by spring means (196a).

19. The device according to claim 1, characterized in that the centering and stabilizing means in the region of the upper and / or the lower rotary bracket each have a magnet system ring (1918) pushed onto the vessel (195) and an axially essentially opposing, attractive force on the Magnetic system ring exercising ferromagnetic counter ring included.

20. Device according to claim 19, characterized in that the magnet system ring (1918) or the mating ring contains a continuous yoke ring and axially attached, axially oppositely polarized, diametrical circular ring sector sections of less than 180 ° extension and that the mating ring or corresponding to the magnetic ring, contains a ferromagnetic continuous ring fixed to the frame or a ring arrangement of circular sector-shaped pole pieces (1915) which are part of a magnetic field generation system of the drive means.

21. Device according to claim 20, characterized in that the magnet system ring (1918) or the ferromagnetic counter ring at the lower end of the vessel (195) is pushed onto this or attached to one or the carrier coupled therewith (1927) and that the frame-fixed counter ring or magnet system ring has a larger diameter than the vessel-side magnet system ring or counter ring and is axially below it, and that the support point has such an axial distance from the space between the counter ring and magnet system ring that an inclination of the plane of the rings is relatively the end faces of one another in mutually opposite circumferential regions.

22. Device according to claim 1, characterized in that the drive system has a plate body arrangement (199) provided with an opening for the vessel (195), the excitation coils (1914) for a magnetic rotary field generation system, one with an opening for the passage of the vessel ( 195) provided yoke plate (1911) and, with the excitation coils (1914) coupled pole shoe arrangements (1912) with the breakthrough surrounding them in this upward or downward pole pieces (1915).

23. The device according to claim 1 or 22, characterized in that the device from above in one or in the support means having the carrier (1927) can be inserted and latched.

24. The device according to claim 23, characterized in that the support means or of the device base (191) projecting bearing pin (1933) are or is resilient and the spring travel is limited by stop means.

25. Device according to claim 23 or 24, characterized in that the carrier (1927) has a circumferential flange (1934) which is superimposed by a diaphragm (1935) which when the vessel (195) and carrier (1927) are separated last teren holds back.

26. Device according to one of claims 16 to 25, characterized in that there is a heat supply device at the lower end of the vessel (195) and a cooling device at the upper end of the vessel.

27. The device according to claim 26, characterized in that the heat supply device comprises, in particular, heated via a device base, frame-fixed bearing journal on the one hand and one or the carrier mechanically and thermally coupled to the vessel on the other hand.

28. Device according to claim 26 or 27, characterized in that the heat supply device protruding from the frame, heated by the device base discs or cylinders on the one hand and on the or a support for the vessel provided, the frame-side discs or cylinders opposite each other at a distance Discs or cylinders on the other hand included.

29. Device according to one of claims 16 to 28, characterized in that the lower region of the vessel is immersed in a particularly heated liquid bath.

30. Device according to one of claims 16 to 29, characterized in that a spoiler (1944, 1945) with an opening adapted to the diameter of the vessel (195) from a rest position -in an operating position is axially movable, in which due to a smaller Game between the opening of the spoiler and the wall of the vessel this chatter vibrates when rotating.

31. Device according to one of claims 16 to 30, characterized in that vessels, vertical support means, rotary holder means and drive means are each provided in a corresponding design in a matrix-like multiple arrangement.

32. Device according to one of claims 16 to 31, characterized in that the or each vessel (5) with such speed, preferably above 3000 1 / min. revolves around a point-like support of its lower end or a carrier connected to it as a gyroscope and apart from the vertical support it runs essentially without contact.

33. Device according to one of claims 16 to 32, characterized in that in the or each vessel (5) an insert vessel for receiving the liquid to be treated can be inserted axially.

34. Device according to claim 1, characterized in that the drive means contain a rotating magnetic drive field generating device base (2) and a coupled to the treatment vessel, interacting with the moving magnetic drive field of the device base interacting magnetically hard and soft drive part arrangement and that the vertical support means also have a part of the rotary holder means, at the lower end of the treatment vessel, which extends downwards along the longitudinal axis of the treatment vessel and which contains a bearing part of the bearing device consisting of a bearing tip or bearing shaft and a bearing cup or bearing sleeve and the drive part arrangement, the holder approach being formed by an opening in the The base of the device passes through, the poles of the magnetic field generating the rotating magnetic drive field generating either in the area of this opening or near its top or near its bottom ystems contains, and wherein the drive member assembly is substantially at the vertical level of these poles.

35. Device according to claim 34, characterized in that a base plate is provided below or on the device base, which either the bearing cup or bearing sleeve for the bearing tip or bearing axis of the holding tion approach or the bearing tip or bearing axis for the bearing cup or bearing sleeve of the mounting bracket.

36. Device according to claim 34 or 35, characterized in that a cover plate (1613) is placed on the device base (162), which has an opening (1614) corresponding to the opening (1612) of the device base (162) and one on the edge thereof has an integrally connected or inserted into the opening, open or bottomed lining of the device base opening.

37. Device according to one of claims 34 to 36, characterized in that on the device base (162) or the cover plate (1613), optionally with support against the ground, a frame (1618) can be placed, which is at a level close to The upper end of the treatment vessel (1626) has a plate (1621) with an opening (1624) which is vertically coaxial with the opening (1612) of the device base (162) and which abuts at least part of its inner edge against the outer wall of the treatment vessel (1626) .

38. Device according to claim 37, characterized in that from the edge of the opening of the plate (1621) of the frame (1618) resilient support means are present as centering and stabilizing means on the outer wall of the treatment vessel.

39. Device according to one of claims 34 to 38, characterized in that the mounting projection (1627) is detachably connected to the treatment vessel, in particular can be coupled by latching.

40. Device according to one of claims 34 to 39, characterized in that in addition to the treatment 5 ^* 5

lungsgefäß contains a number of other, similarly designed treatment vessels, associated mounting approaches and to the storage device same, each associated with the treatment vessels further storage devices and that by means of the device base in addition to the aforementioned magnetic drive field, further magnetic drive fields associated with the individual treatment vessels can be generated.

41. Device according to one of claims 34 to 36, characterized in that a bearing pin (1622) protrudes from a bottom of the or one of the lining sleeves (1614) inserted into the opening in the device base (162), which bearing pin (1622) enters a bearing bore in the mounting attachment (1627 ) and that the drive part arrangement has the shape of a diametrically magnetized permanent magnet ring (101Z) which is entrained by the magnetic rotating field of the magnetic field generating system generated between the pole pieces (1611, 1611a) and at the same time together with the mounting attachment for supporting the same and the treatment vessel (1626 ) and its liquid filling is raised (Fig. 23 and 24).

42. Device according to claim 41, characterized in that the mounting projection (1627) has a bearing part for the bearing pin (1622) containing the hub part and a cover provided at its upper end, which overlaps the mouth of the lining sleeve, from the top of which one respective treatment vessel (1626) protrudes upward at the lower end of the concentric or eccentric holding device.

43. Device according to claim 42, characterized in that a sleeve (102Z) with in particular tapered end faces is inserted into an axial bore of the hub part of the holding projection (1627), which 53

tion of this sleeve with clearance of the bearing pin (1622) is sufficient and the upper and lower centering rings (102Z) seated on the bearing pin (1622), which have corresponding tapered end faces, are pressed with a small preload against the corresponding tapered end faces of the sleeve (102Z) ( Fig. 26).

44. Device according to claim 1, characterized in that the drive means contain a device base generating a rotating magnetic drive field and a magnetically hard or soft drive part arrangement (116Z; 123Z, 128Z) coupled to the treatment vessel and interacting with the moving magnetic drive field of the device base , wherein the device base (110Z) has an opening (113Z) and in the region of this opening near its upper side and / or near its lower side contains the poles of the magnetic field generating system that generate the rotating magnetic drive field, and wherein the drive part arrangement is essentially at the vertical level this pole or on the vertical level between these poles and together with the magnetic field generation system also forms the vertical support means and that ^" the inside diameter of the opening (113Z) of the device base (110Z) is larger than the outside diameter one s hollow cylindrical treatment vessel holding ring (114Z) or that the inner diameter of a bearing support ring (124Z) inserted into the opening (113Z) 'as the outer diameter of a reduced diameter treatment vessel extension (121Z) such that when the drive part arrangement ( 116Z; 123Z) is moved by the rotating magnetic drive field, the longitudinal axis of the treatment vessel (117Z) on circular paths located in horizontal planes, while at the same time due to the rolling of the treatment vessel holding ring (114Z) on the inner surface of the opening (113Z) or £ 0

the rolling of the outer surface of the treatment vessel shoulder (121Z) on the inner surface of the bearing support ring (124Z) causes the treatment vessel to rotate about its longitudinal axis (FIGS. 27 to 31).

45. Device according to claim 44, characterized in that the drive part arrangement is formed by an axially magnetized permanent magnet ring (128Z) embedded in the treatment vessel holding ring (114Z), which in operation is at a vertical level between the upper and lower pole pieces (127Z) of the Magnetic field generation system is located.

46. Device according to claim 45, characterized in that in addition to said treatment vessel

Contains a number of other treatment vessels of the same design and associated magnetic field generation systems, which are arranged in groups of four, the excitation windings of the magnetic field generation systems being acted upon by phase-shifted alternating currents in such a way that the individual treatment vessels with their liquid filling in adjacent pairs execute opposite and in opposite phase movements.

47. Device according to claim 10 or 20 or 21, characterized in that the magnetic ring or magnet system ring (1918) is partially enclosed by a shield ring made of soft magnetic material (1918) in such a way that the end face of the magnetic ring or which represents the different magnetic poles Magnet system ring is exposed, while the magnetic ring or magnetic system ring on the magnetic stray fields emitting outer surfaces is covered by the magnetic shield ring, so that within a matrix arrangement of treatment vessels and associated magnetic field generation systems adjacent systems from treatment vessels with associated do not affect the appropriate magnetic rings or magnetic system rings (Fig. 17).