EP0620039A1 - Homogenising device or similar - Google Patents

Abstract

The invention relates to a homogenising device (1) or the like, having at least one rotor and a stator, rotor and stator having through-holes, slots or similar orifices which, when the rotor rotates with respect to the stator, alternately pass by each other and temporarily align with each other, the medium to be processed passing through these through-holes or the like being homogenised, dispersed or treated in like manner. The invention is characterised in particular in that the cross-section of the through-holes (19) of at least one rotor (27) can be adjusted, in the sense of changing the through-hole cross-section, at rest or during the operation of the homogenisation device (1). <IMAGE>

Description

The invention relates to a homogenizer or similar mixing or dispersing device according to the preamble of claim 1.

In specialist circles, "homogenization" means in particular the change in the state of distribution and the particle size of the inner phase, for example emulsions and suspensions.

Numerous devices for homogenizing, dispersing, mixing and, if necessary, crushing a medium are already known, such devices being referred to in the following generally and briefly as "homogenizing device".

For example, DE-OS 34 17 242 already discloses a homogenizing device for mixing flowable mixed material consisting of at least two components, the at least one rotor provided with rotor blades and one Distances between the rotor blades coordinated, fixed relative to the rotor stator, wherein there are shear gaps between the rotor blades and the stator parts arranged therebetween for the material to be homogenized.

A disadvantage of such homogenizing devices is that different constructions are required for the rotor-stator systems for different mixing, homogenizing material or dispersing medium, hereinafter referred to as "medium to be processed" or "medium". Often, the basic machine parts and the associated conveyor systems can be the same or similar. For example, you may need to make mayonnaise. a rotor with blade rings which differ significantly from those which are well suited for the production of ointments. It is also possible to achieve different favorable working conditions for a homogenization process by using different passage cross sections, for example in the rotor and / or in the stator. For this reason, different rotor-stator systems have hitherto been used in the homogenization device or the like for different medium to be processed or to achieve different homogenization or dispersion effects. A major disadvantage of this is that the rotor and stator system must be dismantled and replaced relatively frequently. In particular, however, even with the previously known homogenizing devices or the like, the medium cannot be conveyed through openings with different cross sections during a homogenizing process without any special additional outlay.

There is therefore in particular the task of designing a single homogenizing device for different commercial goods or media to be processed in such a way that - without replacement and without disassembly - the breakthrough cross-sections for the passage of the medium to be processed change and thus achieve different dispersing or homogenizing effects. This should not only be easily possible in individual, self-contained batches, but also while processing in one batch, i.e. while the rotor is running. In the case of a homogenization device or the like of the type mentioned at the outset, the solution according to the invention consists in particular in the features of the characterizing part of the first claim. As a result, at least in the rotor of this homogenizing device or the like, cross sections of different sizes can be obtained in the openings, that is to say, for example, different slot widths in the rotor. It is particularly advantageous that not only can the breakthrough cross sections, for example of the rotor, be changed between two batches in a simple manner, but this change can also be carried out while the homogenizer is running.

DBGM 88 07 080.8 already knows a dispersing machine in which the stators can be axially displaced and fixed relative to the rotors. As a result, the dispersing action can easily be adjusted depending on the properties of the medium to be processed, for example depending on the viscosity of the material to be processed. However, the setting range is narrowly limited with regard to its effects on the homogenization, dispersing, etc. and only relates to those dispersing machines in which the rotor and the stator are each formed by a flat disk with openings. The adjustment option according to DBGM 88 07 080.8 cannot be applied to numerous other homogenizing devices or the like.

Additional developments of the invention can be found in the features of the subclaims.

According to the features of the second claim, the breakthrough cross-sections or gap widths of both the rotor and that of the stator can be adjusted independently of one another both when the homogenizer is at a standstill and while it is running or the like. According to the embodiment of claim 3, a practically continuous adjustment of the slot width of the rotor and / or stator from 0 millimeters to a suitable size is possible. This enables the homogenization device to be adapted to the special requirements of the product to be processed without having to change the rotor or stator. This adjustment of the width of radially outward slits is also possible during the machining process.

In general, such a homogenizing device or the like, for example for trying out an optimal work cycle, manages with significantly less costs for warehousing and spare parts than such previously known homogenizing devices, in which different designs can be obtained by changing the rotor and / or stator must adapt to the special requirements of the product to be processed. In addition, there is a particular advantage in that the gap widths can be changed during the working process. So far this has not been possible. At most, this is cumbersome to practice with the previous homogenization devices or the like in that the material to be treated is treated in succession in several devices. The goods to be treated must then be transferred from one device to another. A continuous change of gap widths or similar breakthrough cross-sections in the rotor and / or stator during a continuous workflow cannot be achieved with this effort either.

Fig.1

oberhalb der Mittellinie eine teilweise im Schnitt dargestellte Seitenansicht einer erfindungsgemäßen Homogenisiereinrichtung mit im Querschnitt verstellbaren Durchbrüchen und
unterhalb der Mittellinie eine vorbekannte Homogenisiereinrichtung mit feststehendem Statorschaufelkranz,

Fig.2

einen Ausschnitt im vergrößerten Maßstab von einer Seitenansicht der vorbekannten Homogenisiereinrichtung mit feststehendem Schaufelkranz ähnlich dem unteren Teil von Fig. 1,

Fig.3

eine Längsschnitt-Darstellung eines ersten kronenartigen Rotorteils,

Fig.4

eine Stirnansicht des Rotorteils nach Fig. 3 entsprechend der Blickrichtung A in Fig. 3,

Fig.5

eine im Schnitt gehaltene Seitenansicht eines feststehenden Statorteils,

Fig.6

eine im Schnitt gehaltene Seitenansicht eines auf das feststehende Statorteil nach Fig. 5 abgestimmten, axial verschiebbaren Statorteils,

Fig.7

eine Seitenansicht eines im wesentlichen im Schnitt gehaltenen Rotorteils ähnlich Fig. 3 im verkleinerten Maßstab,

Fig.8

ein auf das erste Rotorteil nach Fig. 7 abgestimmtes zweites, verschiebbares Rotorgegenstück,

Fig.9

eine im Längsschnitt gehaltene Seitenansicht eines napfförmigen Pumpflügelteils, in dessen Innenraum insbesondere das erste und zweite Rotorteil nach Fig. 7 und Fig. 8 einzufügen sind,

Fig.10

eine im wesentlichen im Schnitt gehaltene Seitenansicht von einer dem Homogenisierungsbetrieb etwa entsprechenden Zusammensetzung der vorerwähnten Teile aus Figur 5 bis 9,

Fig.11

eine teilweise im Schnitt gehaltene Teil-Seitenansicht einer etwas abgewandelten Ausführung der Homogenisierungseinrichtung, bei der ein Rotor zumindest zwei koaxiale, rohrartige Kränze aufweist, die zum Verändern ihrer Durchbruch-Querschnitte gegeneinander verdrehbar sind,

Fig.12

einen Querschnitt durch einen Stator oder Rotor ähnlich Fig. 11 mit jeweils verstellbarer Schlitzbreite und ganz geöffneten Schlitzen,

Fig.13

einen Schnitt durch einen Rotor oder Stator analog Fig. 12, bei dem die Rotor- bzw. Stator-Schlitze praktisch geschlossen sind, und

Fig.14

eine dem oberen Teil von Fig. 1 ähnliche Homogenisiereinrichtung ausschnittweise in Längsschnittdarstellung.

Further features of the invention result from the following description of exemplary embodiments of the invention in conjunction with the claims and the drawing. The individual features can be implemented individually or in groups in one embodiment of the invention. They show, partly more chemized:

Fig. 1

Above the center line is a side view, partially in section, of a homogenizing device according to the invention with openings and adjustable in cross section
below the center line a known homogenizing device with a fixed stator blade ring,

Fig. 2

3 shows a detail on an enlarged scale from a side view of the known homogenizing device with a fixed blade ring similar to the lower part of FIG. 1,

Fig. 3

2 shows a longitudinal section of a first crown-like rotor part,

Fig. 4

3 shows an end view of the rotor part according to FIG. 3 corresponding to viewing direction A in FIG.

Fig. 5

2 shows a sectional side view of a stationary stator part,

Fig. 6

5 shows an axially displaceable stator part which is matched to the fixed stator part according to FIG.

Fig. 7

3 shows a side view of a rotor part, essentially in section, similar to FIG. 3, on a reduced scale,

Fig. 8

7 a second, displaceable rotor counterpart matched to the first rotor part according to FIG. 7,

Fig. 9

6 shows a side view, in longitudinal section, of a cup-shaped pump vane part, in the interior of which in particular the first and second rotor parts according to FIGS. 7 and 8 are to be inserted,

Fig. 10

an essentially sectional side view of a composition of the aforementioned parts from FIGS. 5 to 9 approximately corresponding to the homogenization operation,

Fig. 11

FIG. 2 shows a partially sectioned side view of a somewhat modified embodiment of the homogenization device, in which a rotor has at least two coaxial, tubular rings which can be rotated relative to one another in order to change their opening cross sections,

Fig. 12

11 shows a cross section through a stator or rotor similar to FIG. 11, each with adjustable slot width and fully open slots,

Fig. 13

a section through a rotor or stator analogous to FIG. 12, in which the rotor or stator slots are practically closed, and

Fig. 14

a section of the homogenizer similar to the upper part of FIG. 1 in a longitudinal sectional view.

1 shows, highly schematized and on a reduced scale, in part above the dash-dotted longitudinal axis L a homogenization device 1 or the like in longitudinal section. A known homogenizing device H is shown below this longitudinal axis in FIG. 1 and in FIG. 2. This has an inlet end b (FIG. 1), which is followed by a guide channel d for the medium to be processed within the outer housing c of the homogenization device H. This moves according to the arrow Pf 1 from the inlet b in the direction of the mixing blades e located in the housing c. This is followed by a dispersing disc f in the flow direction Pf 1 of the medium to be processed. From this, the medium to be processed reaches the stator rotor system according to arrow Pf 2. At the entrance of the associated stator g, delivery vanes h are also provided, which convey the medium to be processed essentially in the axial direction. The stator g is provided with a conventional blade ring k. Immediately adjacent to and within this blade ring k is the blade ring 1 of the rotor m. The medium to be processed is accordingly captured by the blade ring 1 of the rotor m, circulated and moved in the usual way through the column of the stator ring k, with homogenization taking place. Here, n is the schematically indicated axial part of a vane pump, which transports the medium processed in the manner described above out of the outlet nozzle o. In particular in FIG. 2 one can still clearly see an input port p which is somewhat modified compared to the lower part of FIG. 1 and which is open at the top. It is located essentially in the area of the mixing blades or similar conveying elements for the medium to be processed. The drive shaft for the rotor m is designated q and has a rear end cap s. Numerous ring seals r are provided on the shaft g.

In the upper part of FIG. 1 and in FIG. 14, a homogenization device 1 is now shown in a side view shown in section or in half section (FIG. 1). The embodiments of FIGS. 1 and 14 differ only insignificantly from one another in a form which does not relate to the invention. The term "homogenizing device" here means a device for homogenizing, dispersing, mixing or the like, processing medium to be processed. In a housing 2 of the homogenizing device 1, also called "device 1" for short, a shaft 3 is arranged approximately centrally, which is connected to a control head 4 (FIG. 1) known per se and shown only schematically. The housing 2 has an inlet 5 for the medium to be processed. This inlet is located above the drive-distant end of the shaft 3, which has mixing blades 6 or similar conveying members there, which convey the medium to be processed coming from the inlet 5 in the direction of arrow Pf 1 in a guide channel 7 of the device 1 in the direction of its outlet port 8 carry on. The guide channel 7 concentrically surrounds the shaft 3. The inlet of the guide channel 7 belongs to a fixed stator part 9 shown separately in FIG. 5. It is provided with a fastening flange 10 and thus fastened in a sealing manner as part of the housing 2. The mixing blades 6 are rotatably attached to the shaft 3.

It is part of a development of the invention that the fixed stator part 9 is provided in a crown-like manner with an annular, continuous base 11 in the circumferential direction and from this a kind of crown spikes or tapering in the axial direction of a fixed counterpart 14 (FIG. 6) of the stator part 9 , spaced base fingers is provided in the circumferential direction. This is a counterpart 14 matched to the fixed stator part 9, in FIG. 6 drawn in the axial direction from the fixed stator part 9 in the manner of an exploded drawing. Referring to Fig. 5, the counterpart 14 has a hollow inner base 16 so that the crown prong-like base fingers 12 of the fixed stator part 9, which represent portions of a tube, can be inserted into this hollow inner base when the parts 9 and 14 are pushed together. From the base distant end 18 of the counterpart 14, counter fingers 20 extend in the direction of the base 11. They are spaced analogously to the base fingers 12 of the stator part 9 and are shaped in their outline shape to the openings 25 between the base fingers 12 so that they join axially of the fixed stator part 9 and its counterpart 14 can close the gaps between the base fingers 12. An axial displacement of the counterpart 14, which is otherwise fixed in the device 1 in a rotationally fixed manner, into the stator part 9 fixed to the housing accordingly leads to a reduction in the size of the openings 19 located between the base fingers 12 of the fixed stator part and the counter fingers 20, as well as from a comparison of FIGS. 5 and 6, possibly in conjunction with FIG. 10 to be described later. The axially displaceable counterpart 14 has at its counterbase 15 flange sections 21 which radially penetrate the corresponding longitudinal slots 22 of the housing 2, so that the displaceable counterpart 14 can be actuated on the outside of the machine by suitable adjusting means. By means of a corresponding adjustment movement of the flange sections 21 of the counterpart 14 in accordance with the double arrow Pf 3 (FIG. 14), when the rotor part 9 and its counterpart 14 are joined together, the slot width remaining between the associated base fingers 12 and the counter fingers 20 and thus the passage cross sections present in the stator can be changed .

In FIGS. 7 and 8, analogous to FIGS. 5 and 6, essentially individual parts of the rotor designated as a whole by 26 are shown. It is part of the invention that the rotor 26 has a rotor part 27 which rotates during operation of the homogenizing device 1 and is axially adjustable if necessary, which is shown separately in FIGS. 3 and 4. This is also crown-like in essential parts; namely, it has an essentially annular surface-like base 28 with a crown-pronged rotor base finger 29 extending therefrom in the axial direction. Between adjacent rotor base fingers 29, which are spaced apart in the circumferential direction, there are openings 30 analogous to the openings 25 in the fixed stator part 9. In the base 28 of the axially displaceable rotor part 27 there are passages 31 and in the central region of the base 28 there is a guide and adjustment tube 32, hereinafter referred to as “adjustment tube 32” for short. The passages 31 allow the medium to be processed coming from the inlet 5, after it has passed through the inlet-side part of the guide channel 7 (FIG. 14), to now also reach the area of the rotor fingers 29.

In FIG. 7, the axially displaceable rotor part 27 with the associated adjusting tube 32 is reduced in size and shown in a line of alignment with a rotor counterpart 33. This has a similar function in the axially adjustable rotor part 27 as the counterpart 14 in the fixed stator part 9. The counterpart 33 (FIG. 8) to the axially adjustable rotor part 27 (FIG. 7) has a counter base 34 with a central perforation 35 through which the assembled state (see FIG. 10), the adjusting tube 32 of the axially displaceable rotor part 27 passes through. The counter base 34 in turn - similar to a crown with a toothed counter base finger 36. These are matched to the openings or gaps 30 remaining between the rotor base fingers 29. If the axial adjustable rotor part 27 is fully engaged in the rotor piece 33, the openings 30 in the rotor part 27 are generally closed. This means that the gap width b is zero for a rotor 26 and the total cross section of the openings for a rotor is also zero zero. By axially displacing the adjustable rotor part 7, it is then possible to continuously adjust the cross-sectional area of the rotor openings (in this case these are the open cross-sections of the openings 30). According to the invention, this is also possible with a running homogenization device. In Fig. 9 you can still see a pump vane part, generally designated 40. It has a cup-shaped base 41. In FIGS. 7 to 9, the axially adjustable rotor part 27, the rotor counterpart 33 and the pump vane part 40 are shown axially pulled apart in the manner of an exploded view. 10 and 14 it can be seen how the aforementioned parts 9, 14, 27, 33 and 40 interact within the homogenizer 1. At the free ends of the cup-shaped base 41 of the pump vane part 40 there are, more schematically shown in FIGS. 9, 10 and 14, pump vanes 42 acting in the radial direction, which convey the medium to be processed out of the area of the stator 14 and into the Support outlet port 8 of device 1.

10 shows how the rotor counterpart 33 with its counter base 34 is accommodated in the cavity 44 of the cup-shaped base 41 of the pump vane part 40. The counter fingers 36 of the rotor counterpart 33 protrude into the openings 30 between the rotor base fingers 9 and extend a little into these openings 30. From FIGS. 7 and 8 in connection with FIG. 10 it can be seen well that the counter fingers 36 - seen in the circumferential direction - engage in the openings 30 between the rotor base fingers 29. The remaining rotor part 27 and rotor counterpart 33 in this position can also be seen there Gap width b, from which the cross-sections of the openings 45 result on the one hand and the counter-base fingers 36 in accordance with the outline shape of the rotor base fingers 29. As can be seen particularly well from FIG. 14, the corresponding stator 9, 14, which is provided with openings 45 and is variable in cross section, adjoins the rotor region with openings 45. 10 shows the fixed stator part 9 with its fastening flange 10 and the counter base 15 with the flange section 21 and, partially hidden, the counter fingers 20 of the counter base 15.

Both the stator part 9, 14 and the rotor 26 can be adjusted independently of each other, the cross section of the openings 45 and the cross section of the passage openings 46 both at a standstill and while the homogenizer 1 is running. Both the drive and the adjustment take place via the shaft 3, which also includes the guide and adjustment tube 32 already mentioned. The shaft 3 is connected to the control head 4 (FIGS. 1 and 14) and is provided with a central bore 50 and is closed by a cap 51 at its end remote from the drive. The housing 2 is divided in the area between the pump vane part 40 and a housing connecting flange 52, with which the connection to the control head 4 is established, by means of an intermediate wall 53 which is somewhat conical in cross section. The shaft 3 passes through this intermediate wall 53 and corresponding shaft sealing elements 54 are also provided there. In the housing space 55 near the drive there is an axial adjustment element 56 which, according to the double arrow Pf 4, can move an adjustment rod 57 axially back and forth within the bore 50 of the shaft 3. For this purpose, adjusting jaws 58 are provided, which comprise an adjusting pin 59, which in turn is connected to the adjusting bolt 57. At the end of the adjusting tube 32 remote from the drive, the adjusting bolt has an adjusting pin 60, which with its Ends engages in the adjusting tube 32 of the axially adjustable rotor part 27. Accordingly, by means of a corresponding axial movement of the axial adjusting element 56 (double arrow Pf 4), the axially adjustable rotor part 27 can be adjusted such that the width of the column b between the rotor base fingers 29 and the counter-base fingers 36 and thus also the passage cross sections of the rotor part 27 change. Independently, the counterpart 14 to the fixed stator part 9, i.e. the axially adjustable stator part, as already mentioned, can be adjusted by moving the flange sections 21 relative to the fastening flange 10, whereby the gap widths and accordingly the passage cross sections in the stator 9, 14 are changed in an analogous manner become. Such changes are to be carried out independently of one another in the case of the stator 9, 14 and also in the rotor 26, both when the machine is at a standstill and above all while it is running. The step width of the rotor 26 and / or stator 9 is infinitely variable / 14 possible, for example between zero millimeters to ten millimeters, but possibly even further. This makes it possible to adapt the homogenizing device 1 to the special requirements of the medium to be processed without having to change tools or transferring the medium to be processed from one device 1 to another device. If necessary, the change can also be made during the machining process. With such a variable rotor-stator system, costs for the storage of different rotors and stators can be reduced. One takes a somewhat more difficult manufacture of the rotor 26 or the stator 9, 14 and the associated effort for the adjusting device, furthermore a somewhat larger overall length (cf. for the overall length the upper and lower part of FIG. 1). However, methods of operation can be carried out with the homogenization device 1 according to the invention, which work with the previously known machines of this type cannot be carried out or cannot be carried out in the same procedure. The device 1 according to the invention is therefore also particularly suitable for finding out optimal work processes.

A somewhat modified embodiment of the homogenizing device is shown in FIGS. 11 to 13. 11 shows a two-part stator 70, of which the one stator part 71, which is fixedly connected to the housing, has a blade ring 72. The second stator part 73 is accommodated in the housing 2 such that it can rotate relative to the stator part 71. It has a wide stator blade ring 74. 12 shows a section through the two blade rings 72 and 74, which are provided with axial slots 75 in the manner of a crown. It can be seen from the double arrow Pf 5 in FIG. 12 how the inner rotatable stator part 73 can be adjusted with the associated rotatable stator blade ring 74. FIG. 13 shows a stator comparable to FIG. 12, the inner rotatable stator blade ring 34 being rotated by the angle E with respect to the outer, fixed stator ring 72 in such a way that the axial slots 75 are now closed, like the partial sections 75a and 75b of the stator slots in FIG. 13. Accordingly, you can adjust the slot width and thus the cross-sections of the openings. In the exemplary embodiment according to FIG. 11, this is possible easily and continuously with the aid of a hand lever 79 and both when the homogenizer 1a is stopped and while it is running. According to the invention, this also includes that the rotor 76, like the stator 70 described above, is equipped with two blade rings 77 and 78 which can be rotated in relation to one another. The difference compared to FIGS. 1 to 10 and 14 described homogenizing device consists only in the fact that the change in the cross sections of the openings in the rotor and stator in the embodiment according to FIGS. 11 to 13 by twisting of the individual stator and rotor parts takes place against each other, while in the embodiment according to FIGS. 1 to 10 and 14 the adjustment takes place by axial displacement.

11 to 13 that the cross section of the axial slots 75 on the stator 70 fixed to the housing can be adjusted by turning the hand lever 79 both when the device 1 is at a standstill and during operation. The rotor 76 with the two blade rings 77 and 78 can also be seen there. If one wishes to change the cross-sections of their axial slots 75, similarly as shown in FIGS. 12 and 13, this can also be achieved by an adjusting device which has an internal one Rotor ring 77 moves relative to the outer rotor ring 78, as shown in the cutouts in FIGS. 12 and 13. The shift can e.g. in a comparable manner by means of the adjusting bolt 57 (see FIG. 10), in which case, for example, the pin 60 engages in a link of the rotor 76, so that an axial displacement of the adjusting bolt 57 leads to a rotational movement of the inner blade ring 77 of the rotor 76. In this case, the rotor 76 is likewise designed in two parts, analogously to the stator 70, and its blade rings 77 and 78 can be rotated relative to one another analogously to the illustration in FIGS. 12 and 13.

All of the individual features described above and / or listed in the claims can be essential to the invention, either individually or in any combination with one another.

Claims (9)

Homogenizing device or the like with at least one rotor and a stator, the rotor and stator having openings, slots or the like openings which alternately run past one another and are temporarily flush with one another when the rotor rotates with respect to the stator, the passage through these openings or the like increasing processing medium is homogenized, dispersed or the like is processed,

that the cross section of the openings (19, 25, 30, 75) is adjustable at least in the case of a rotor (27, 76) at a standstill or during the running of the homogenizing device or the like in the sense of a change in the opening cross sections. Homogenizing device or the like according to claim 1, characterized in that both the breakthrough cross-sections of the rotor (27, 76) and that of the stator (9, 14; 70) independently of one another when the homogenizing device (1, 1a) is at a standstill or while it is running or the like are adjustable. Homogenizing device or the like according to Claim 1 or 2, characterized in that at least one rotor (76) has at least two approximately coaxial, tubular blade rings (77, 78) with mutually coordinated openings, radial slots or the like (75), the two blade rings for changing the breakthrough cross sections can be rotated relative to one another in the circumferential direction at a standstill or during the run (FIGS. 12, 13). Homogenizing device or the like according to Claim 1 or 2, characterized in that at least one rotor (26) has a rotor part (27) which is approximately crown-like and provided with an annular surface base (28) with tapering from the base and tapering in the direction of the longitudinal axis of the rotor Has circumferential spaced rotor base fingers (29) and a matching rotor counterpart (33), which has an approximately crown-like counterbase and the spacers or gaps (30 ') between the base fingers (29) matched counter fingers (36), and that The rotor part (27) and the rotor counterpart (33) for changing the rotor passage cross-sections are stationary and axially displaceable relative to one another while the rotor (26) is running. Homogenizing device according to claim 4, characterized in that the rotor part (27) is displaceable and the rotor counterpart (33) is fixed to the housing. Homogenizing device or the like according to one of claims 1, 2, 4 or 5, characterized in that it has a preferably fixed stator part (9) which - approximately crown-shaped - with an annular base (11) and emanating from there, in the axial direction this stator part (9) is provided with tapering base fingers (12) which are spaced apart in the circumferential direction, and that the stator (9, 14) has a counterpart (14) for this purpose, which has a counter base (15) as well as the distances, gaps or the like (25) between the base fingers (12) matched counter-fingers (20), and that the fixed stator part (9) and the associated counterpart (14) for changing the passage cross-sections are axially displaceable relative to each other. Homogenizing device according to claim 6, characterized in that the stator part (9) is attached to the housing and the associated counterpart (14) is axially displaceable. Homogenizing device according to one of claims 1 to 7, characterized in that it has an adjusting device for the axially adjustable rotor part (27) or the rotatable rotor (76). Homogenizing device according to claim 8, characterized in that the adjusting device has an adjusting bolt serving in a bore (50) of a drive shaft (3) for the rotor part (27) or the rotor (76), which with an adjusting pin (60) enables an axial adjustment of the Rotor part (27) or, optionally in conjunction with a link guide, causes a rotating movement of a blade ring (77) relative to the adjacent blade ring (78).

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