EP2377603A1 - Mixer, in particular biaxial mixer - Google Patents

Abstract

The mixer (1) has a mixer housing in which a mixture container is arranged. A mixing device (7) is accommodated in the housing, and implements defined mixing movement i.e. biaxial movement. The device has opposite clamping plates (16, 17) i.e. rotary disks, rotatable around rotational axis. A separating wall (44) separates defined components of the device from each other, so that the plates extend into a mixing chamber (47) and a defined part i.e. adjusting device, of the remaining mixing device and/or elements in the housing lie on a side of the separator wall.

Description

The invention relates to a mixer, in particular a biaxial mixer, according to the preamble of claim 1.

Such biaxial mixers are well known, for example from the EP 1 698 392 B1 in which the mixer has a mixer housing as a stand housing. In addition, the biaxial mixer has a clamping frame with a frame base part, on which mutually opposite, in a vertical plane guided against each other adjustable turntable carrier are supported. At each turntable carrier a turntable is supported, the turntables are aligned coaxially and against each other. Furthermore, this biaxial mixer comprises a clamping device with a spindle drive device arranged on the frame base part for adjusting the turntable carriers for clamping and for holding different mixing material containers between the turntables. Further, a clamping frame drive is provided for rotating the clamping frame about a horizontal clamping frame rotation axis, which has a fixed housing, connected to the clamping frame and motor-driven drive shaft. Furthermore, a turntable drive is provided for driving at least one of the turntables about a turntable axis running perpendicular to the clamping frame axis of rotation. Such a biaxial mixer is designed for a fast run with over 200 revolutions per minute of the tenter, in particular for mixing a mix with high viscosity.

Furthermore, a biaxial mixer with a basically similar construction also from the EP 0 681 864 B1 known.

In the aforementioned biaxial mixers excellent mixing of the mix is achieved in Mischgutbehältern. However, there is the risk in certain Mischgutbehältern or even with an improper closure of such a Mischgutbehälters by the end user, that during the hurling mixing movement of the Mischgutbehälters for undesired leakage of mix, for example of paint, can come from the Mischgutbehälter, which in turn possibly lead to contamination of individual components of the mixing device, such as the guide mechanism or the adjustment of the adjustment.

Object of the present invention is therefore to develop a mixer, in particular a biaxial mixer of the generic type in such a way that the escape of mix from a Mischgutbehälter can not lead to undesirable contamination of defined components of a mixing device.

This object is achieved with the features of claim 1. Advantageous embodiments thereof are the subject of the dependent claims.

According to claim 1, a mixer, in particular a biaxial mixer is provided with a mixing chamber having a mixer housing, in which mixing chamber a Mischgutbehälter is introduced, wherein in the mixer housing further, a defined mixing movement, in particular a biaxial mixing movement, performing mixing device is added, and wherein the mixing device opposite clamping plates, preferably has turntable. At least one of the clamping plates is so displaceable by means of an adjusting device of the mixing device, that the distance between the two clamping plates is changeable. That is, the distance between the two clamping plates in a mutually directed displacement movement, in particular for holding a Mischgutbehälters between the clamping plates, is reduced in size and that on the other hand, the distance between the two clamping plates in a displacement movement directed away from each other can be increased. According to the invention, a dividing wall is provided which separates the mixing device or defined components of the mixing device such that the clamping plates of the mixing device protrude into the mixing space and a defined part of the remaining mixing device, in particular the adjusting device and / or the actuating device for the adjusting device and / or the Mixing device provided and arranged in the mixer housing components or assemblies, on the mixing chamber side facing away from the partition.

With such a partition wall according to the invention is advantageously a structurally simple separation of the mixing material container receiving mixing space in which protrude the clamping plate of the mixing device, achieved by the remaining components or units of the mixing or adjusting, so that any emerging from the mix container during mixing Paint splashes or the like can lead to no sticking or to any contamination of the moving parts of the mixing device, for example. Thus, a durable and high reliability of the mixing device and thus of the mixer is thus provided in a simple manner.

The dividing wall itself can be designed in fundamentally different ways, this being preferably in the form of a disk or plate. As materials can be a variety of materials are used, in particular, for example, a sheet material or even a plastic material, to name just two examples. The partition wall itself preferably has a rounded, in particular a round or oval outer contour, which ensures that the partition wall formed, for example, by a cutting disk can rotate easily and without much air or flow resistance in the cutting wheel plane upon actuation of the mixing device.

In order to enable a functionally reliable and unhindered adjustment or displacement of at least one of the clamping plates also in connection with such a partition, it is provided according to a particularly preferred embodiment that the at least one displaceable clamping plate has a clamping plate carrier on which the clamping plate is rotatably supported and which Spinnaker carrier is guided out of the mixing chamber through a slot recess in the partition wall to lying on the mixing chamber side facing away from the partition adjustment. The separating wall-side slot recess extends in the direction of displacement of the associated tensioner carrier and releases a displacement path of the tensioner carrier within predefined setting ranges. In this context, it should be expressly mentioned that even in the embodiment according to the invention, a tension or turntable drive for driving at least one of the clamping plate, preferably turntable may be present, as for example in the EP 1 698 392 B1 is described and which clamping plate drive forms part of the mixing device.

Particularly preferred is in connection with an embodiment of a partition with a slot recess an embodiment in which the slot recess is formed so that these end stops slot recess in a direction transverse to the direction of displacement directly adjoins the clamping plate carrier and / or rests there. The adjacent or adjacent configuration of the slot recesses ensures that it can be dimensioned small and thus the partition is not overly perforated.

In order to avoid in particular such leakage or entry of Mischgutspritzern on the slot recesses in the mixing chamber facing away from the partition, according to a particularly preferred embodiment of the present invention idea at least one cover is provided as part of a cover, which is mounted in the region of the slot recess that this at least partially, preferably completely covers the free, not covered by the clamping plate carrier slot portion of the slot recess in the different clamping plate carrier positions.

According to a particularly preferred embodiment, a positive guidance device is proposed, by means of which the cover element and the clamping plate carrier are coupled in such a way that the cover element can be displaced positively in a defined covering position during a clamping plate carrier displacement. By means of such a positive guidance device, an automatic transfer of the cover element into the respectively desired covering position is thus advantageously achieved in the case of a clamping plate carrier displacement, in a functionally reliable manner.

According to a further specific embodiment, it can be provided that the cover is displaceable relative to the clamping plate carrier, in particular relative to the clamping plate carrier pivotally or rotatably supported on this, wherein on the cover a first coupling element of the forced guiding device is arranged, with a second stationary coupling element of the forced guiding device thus indirectly or directly cooperates, that the first coupling element in a displacement of the tensioner carrier by the 'direct or indirect positive coupling with the second coupling element relative to the tensioner carrier in a defined covering position is displaced. Such coupling elements can be realized with little component effort and thus allow a manufacturing technology simple design of the positive guidance device. Particularly preferably, for example, the first coupling element is formed on the cover by a gear or a toothed segment, which cooperates with a second coupling element forming the rack. Such a structure is easy to manufacture and has a high reliability in the operation.

According to a further preferred embodiment, the cover is formed by an oblong, in particular an elliptical or oval outer contour having cover plate which is eccentrically mounted on the tensioner carrier, in such a way that the cover in a, relative to the slot recess longitudinal direction, upper or lower Dead center position of the clamping plate carrier is aligned with its cover disc longitudinal axis approximately in Schlitzausnehmung longitudinal direction and thereby covers the cover with their, based on the eccentric bearing, longer side extending from the respective clamping plate dead center position to the other dead point extending free slot area of the slot recess , With such an elongated configuration of the cover element, the component expenditure is advantageously reduced overall and, in conjunction with the positive guidance device, ensures in a simple manner that the desired, in particular the complete, region of the free slot recess is always covered.

In this context, a specific embodiment is preferred in which the elongated, in particular elliptical or oval, outer contour of Cover and / or the positive guidance device is designed or are such that the cover is rotatable during the displacement of the tensioner carrier from one dead center to the other dead center so that the cover in both dead center with its cover disk longitudinal axis aligned approximately in slot recess longitudinal direction is and thereby the cover, each with its longer side covering itself away from the respective pan carrier Totpunktstellung, to the other dead point extending free slot area of the slot recess. Also in this context, it should be mentioned again that the cover is of course designed so that, for example, at such Spanntellerträgerpositionen in which, based on the slot recess longitudinal direction, a free slot area is formed both above and below the tensioner carrier, both areas by means of Cover should be covered.

According to a further specific embodiment, it is provided that the toothed rack is arranged on the side facing away from the mixing chamber and substantially parallel and spaced therefrom at least one guide rod is arranged, wherein the at least one rack and the guide rod between two each movable displaceable clamping plate carriers extend and the cover element side gears or toothed segments are arranged in the region between the two rods. This results in a total of a compact design. Preferably, it is further provided that a receiving bearing for a mixer shaft is arranged and supported on the rods, preferably in a central region of the longitudinal direction of the rods, by means of which mixer shaft, the entire mixing device, preferably motor driven, is rotatable clockwise or counterclockwise. Overall, with such a concrete structure can form a mechanically stable arrangement, which is particularly well suited for rough mixing operation.

The covering device itself, which is preferably formed by a cover, according to a particularly preferred specific embodiment in a planar abutment connection to the partition wall and is displaceable relative to this, in particular rotatable or pivotable, as described above. The preferred flat contact connection ensures that no mix can reach beyond the partition wall via the slot recess in the region facing away from the mixing space. In principle, however, the formation of a cover device would be possible, which is formed with a defined gap distance to the partition to avoid adhesion effects of the components. Even with such a configuration, contamination of the particularly endangered areas of the mixing device on the mixing chamber side facing away from the partition wall can be reliably reliably avoided if necessary.

The adjusting device itself preferably has a spindle drive with a per ver adjustable clamping plate provided threaded spindle, which threaded spindle on the mixing chamber side facing away from the partition is fixed and rotatable and arranged on the mixing chamber side facing away from the partition with the tensioner carrier or a there arranged and a spindle nut having Spanntellerträger- Bearing element cooperates to adjust the associated tensioner carrier. In this case, it can further preferably be provided that the clamping plate carrier bearing element is displaceably mounted along at least one guide rod, wherein the guide along several guide rods is preferred. With such a spindle drive a functionally reliable adjustment of the clamping plate carrier and thus the clamping plate is guaranteed, which is also ensured due to the spindle drive due to the self-locking between the threaded spindle and spindle nut easy to bewerkstelligende fixing and mounting the pan carrier in a once occupied position.

It is preferably provided that the partition wall is formed by a simple, lightweight plate that does not assume a supporting function. According to an alternative embodiment of the present inventive idea, however, it may also be provided that a defined part of the components or assemblies lying on the side of the partition facing away from the mixing chamber, in particular the adjusting device and / or the components or structural units required for the mixer operation and / or for the actuation of the adjusting device , at least partially indirectly and / or directly fixed to the partition on the mixing chamber side facing away from the partition. The partition thus has in this case, in addition to their shielding function at the same time a further function as a holding means for already existing in the mixer housing components. This would allow a further high functional integration to be achieved.

According to a particularly preferred specific embodiment, it is proposed that two separate and spaced slot recesses are provided in two adjustable clamping plate carriers, in each of which a clamping plate carrier is slidably guided. In this case, then the partition wall with respect to the slot recesses, opposite, the slot recesses between them having partition wall regions, each arranged on a bearing block, which interacts with the cover plate-side form-fitting elements, such as gears or toothed segments positive locking counter-elements, for example a rack each end is mounted and / or on which the at least one guide rod, along which the clamping plate carrier parts are displaceably guided, is mounted end, wherein it is preferably provided that both the guide rods and the positive locking counter-element is mounted on the mixer shaft of a drive unit receiving receiving bearing. It goes without saying that In this case, then, the mixer unit is rotatably mounted and supported in the mixer housing.

With such a concrete structure, excellent mixing results can be achieved without undesirable contamination of the components required for actuating the mixing device and arranged in the mixer housing.

The invention will be explained in more detail with reference to a drawing.

Fig. 1

lediglich äußerst schematisch eine Seitenansicht eines Mischers mit einem als Standgehäuse ausgebildeten Mischergehäuse, wobei die Seitenwand lediglich teilweise freigeschnitten dargestellt ist, um die Anordnung eines Antriebsmotors schematisch darzustellen,

Fig. 2

schematisch eine perspektivische Rückenansicht der erfindungsgemäßen Mischeinrichtung,

Fig.3

schematisch eine perspektivische Vorderansicht der erfindungsgemäßen Mischeinrichtung nach Fig. 2,

Fig. 4

schematisch eine Rückansicht auf die Mischeinrichtung der Fig. 2 und 3 mit aus Übersichtlichkeitsgründen lediglich die Abdeckeinrichtung zeigender Bauteilanordnung, und

Fig. 5

eine schematische Rückansicht auf die Mischeinrichtung der Fig. 2 und 3, die aus Übersichtlichkeitsgründen lediglich die Bauteile der Verstelleinrichtung zeigt.

Show it:

Fig. 1

only very schematically a side view of a mixer with a housing housing designed as a mixer housing, the side wall is shown only partially cut away to schematically illustrate the arrangement of a drive motor,

Fig. 2

schematically a perspective rear view of the mixing device according to the invention,

Figure 3

schematically a front perspective view of the mixing device according to the invention Fig. 2 .

Fig. 4

schematically a rear view of the mixing device of Fig. 2 and 3 with for clarity, only the covering device pointing component assembly, and

Fig. 5

a schematic rear view of the mixing device of Fig. 2 and 3 which, for reasons of clarity, only shows the components of the adjusting device.

In the Fig. 1 an exemplary embodiment of a biaxial mixer 1 according to the invention is shown, which has a mixer housing 2 and in the front side 3, for example, a door 4, which is shown here only indicated extremely schematically, is inserted. The mixer housing 2 is designed here as a stand housing which rests on a bottom 5. In the interior of the mixer housing 2, as can be seen from the partially cut-away side wall 6, one in the Fig. 2 to 5 closer explained mixing device 7 rotatably mounted in a conventional manner about a first axis of rotation 8. For this purpose, a horizontally disposed mixer shaft 9 of the mixing device 7 is rotatably supported and supported by means of a bearing flange 9a in a housing-side support frame 10, which is only shown here extremely schematically. The mixer shaft 9 is rotatably supported, for example via ball bearings 11 in the region of the bearing flange 9a.

The mixer shaft 9 has at its end a drive wheel 12, which is operatively connected by a drive belt, not shown here, with a drive wheel 13 of a drive shaft 14 of a drive motor 15. The drive motor 15, preferably an electric drive motor, is mounted here in a lower region of the mixer housing 2.

The further construction of the mixing device 7 will now be described with reference to Fig. 2 to 5 explained in more detail.

Like this from the Fig. 2 and 3 it can be seen, the mixing device 7 here two coaxially oppositely directed clamping plate, which are designed here as a rotatable turntable 16, 17 and, for example, each may have a rubber pad as anti-slip support for a clamped between the turntables mixing container.

The two turntables 16, 17 are each rotatably mounted on a turntable carrier 18, 19 rotatably supported, wherein the rotation about the second axis of rotation 20 (FIG. Fig. 3 ) he follows.

To generate the rotational movement of the turntable 16, 17 about the axis of rotation 20, relative to the respective turntable carriers 18, 19 is in the Fig. 2 illustrated turntable drive 21 is provided, which is preferably designed as a chain or belt drive or as shown here as positive Umschlingungstrieb and a drive belt 23 which is exemplified here as a toothed belt and the starting from a mixer shaft side stationary timing pulley 22 via a first guide roller 27 a drive wheel 25 of a turntable drive shaft 26 to one of the deflection roller 27, based on the mixer shaft 9 opposite guide roller 27 and back to the fixed timing pulley 22 is guided.

The turntable drive shaft 26 is what is in the Fig. 2 is not shown in detail, guided by the trained as a hollow carrier turntable carrier 19 through forward in the direction of the axis of rotation 20 of the turntable 17 and drives there, for example, with a rotary drive, not shown, the turntable 17 at. The illustrated in the example shown here upper turntable 16 is only rotatably supported on the upper turntable carrier 18, as in the clamped state of a Mischgutbehälters not shown here between the two turntables 16, 17, the rotational movement of the driven, lower turntable 17 automatically transfers to the upper turntable 16.

Upon actuation of the drive motor 15 thus the mixer shaft 9 is rotated in the mixer housing 2 relative to the mixer housing 2 about the axis of rotation 8, wherein at the same time by the trained as Umschlingungstrieb turntable drive 21, a rotation of the turntable 16, 17 about the axis of rotation 20 takes place, so that the mixed material container in the mixer housing 2 undergoes a biaxial mixing movement.

In order to be able to clamp a mixing material container between the two turntables 16, 17, both turntable supports 18, 19 in the direction of the rotation axis 20 toward one another as well as away from one another can be displaced by way of example here. For this purpose, the mixing device 7 has an adjusting device 28, which by way of example here has a spindle drive 29 which, as can be seen in particular from FIG Fig. 5 it can be seen, in each case one with one of the two turntable carrier 18, 19 rotationally connected clamping jaw 30, 31, which thus form turntable carrier bearing elements. In the Fig. 5 For reasons of clarity, in each case the clamping jaw 30, 31 is shown without a turntable carrier inserted therein. The clamping jaws 30, 31 each have a spindle nut 32, 33, in each of which a threaded spindle 34, 35 described in more detail below engages a threaded rod 39 of the spindle drive 29.

The spindle drive 29 has, for example, an actuator 36, by means of which via a gear gear 37 a threaded spindle side drive pinion 38 is rotationally driven in one or the other direction, so that also the opposite, that is provided with left and right threaded screws 34, 35th the threaded rod 39 rotate about its own axis, whereby the clamping jaws 30, 31 is displaced depending on the direction of rotation of the threaded rod 39 upwards or downwards.

As this particular from the Fig. 5 it can be seen that the two threaded spindles 34, 35 are thus arranged as threaded spindle areas on a rotatably mounted threaded rod 39. To ensure that the jaws 30, 31 are displaced either towards or away from each other, the spindle nut 33 is inversely aligned with the spindle nut 32 or designed, that is, for example, instead of a right-hand thread as in the spindle nut 32, a left-hand thread 33 is provided. Accordingly, the associated threaded spindle has either a right-hand or left-hand thread.

The two clamping jaws 30, 31 are also slidably guided and supported on spaced guide rods 40, 41.

The two guide rods 40, 41 extend between two, on the guide rods 40, 41 fixedly arranged bearing blocks 42, 43 (see in particular Fig. 2 ), on which the cutting disc 44 is supported.

Like this from the Fig. 5 It can also be seen that, at the level of a central region of the two guide rods 40, 41, a clamping jaw-like receiving bearing 45 is provided, on which the guide rods 40, 41 are fixed immovably. This receiving bearing 45 has a receiving opening 46 into which the mixer shaft 9 is inserted rotationally fixed, so that upon actuation of the mixer shaft 9, the entire unit is rotated about the axis of rotation 8.

If now a mixed material container between the two turntables 16, 17 are clamped, the adjusting device 28 is actuated and then, accordingly, the two turntable 16, 17 moves towards each other.

As this particular from the Fig. 2 and 3 it can be seen, the mixing device 7, a cutting disc 44 which forms a partition, the defined components of the mixing device 7 so separated from each other that the turntable 16, 17 of the mixing device protrude into a mixing chamber 47 and the remaining part of the mixing device 7, that is in particular the drive means or the turntable drive 21 as well as the adjusting device 28, come to rest on the mixing chamber side facing away from the cutting disc 44.

The here as a round disc, for example, formed of a sheet material cutting disc 44 has, as in particular from Fig. 3 can be seen, approximately axially parallel to the axis of rotation 20 aligned slot recesses 48, 49, through which the two turntable carriers 18, 19 extend in the direction of their associated jaws 30, 31.

In order to ensure that any mixing material, for example paint or the like, which may escape from a mixing material container, can not reach the area behind the separating disk 44 via the free slot regions 50, 51 which are not penetrated by the respective turntable carrier 18, 19, as is especially clear of the Fig. 2 and 4 it can be seen, cover plates 52, 53 are provided, which for example have an oval outer contour here. The cover plates 52, 53 are eccentrically and fixedly mounted on the respective turntable carrier 18, 19, wherein the cover plates 52, 53 each further comprise a gear 54, 55. These gears 54, 55 cooperate with a rack 56 arranged between the two bearing blocks 42, 43 and supported on the receiving bearing 54 such that upon displacement of the turntable carriers 18, 19 in the slot recess longitudinal direction, ie in the present case in the direction of the second axis of rotation 20, the gears 54, 55 roll on the rack 56, whereby the cover plates 52, 53 are rotated relative to the turntable carrier 18 and 19 respectively.

This just described cover plate gear rack assembly forms a positive guide means which is designed so that the cover plates in each position of the respective turntable carrier 18, 19 the not covered by the turntable carrier 18 and 19, free slot area 50, 51 of the slot recesses 48, 90 cover. As a result, it is reliably avoided that, for example, spraying mixed material can pass through the slot recesses 48, 49 into the region behind the cutting disk 44.

The cover plates 52, 53 are preferably rotatable in a planar contact connection on the rear wall of the cutting disk 44.

As further in particular from the synopsis of Fig. 2 and 3 it can be seen, the cover plates 52, 53 having an oval outer contour are mounted eccentrically on the respectively assigned turntable support 18, 19 in such a way that the cover disks 52, 53 are in an upper or lower dead center position of the turntable support 18, 19, with respect to the longitudinal slot recess ( Fig. 3 ) are aligned with their cover disk longitudinal axis 57, 58 approximately in the longitudinal slot recess and thus the respective cover 52, 53 with their, relative to the eccentric bearing, longer side away from the respective turntable carrier dead center, away from the other dead center extending free slot area of the slot recesses 48, 49 covers. Starting from this dead center, the cover plates 52, 53 in the displacement of the turntable support 18, 19 so rotated from one dead center to the other dead center that the cover plates 52, 53 in both opposite dead center positions each with its cover disk longitudinal axis 57, 58 approximately in Slot recess longitudinal direction are aligned and thereby the cover plates 52, 53 each cover with their longer side extending from the respective turntable carrier dead center position to the other dead point out free slot portion of the slot recesses 48, 49 in each movement position of the turntable carrier.

LIST OF REFERENCE NUMBERS

1

biaxial

2

mixer housing

3

front

4

sliding door

5

ground

6

Side wall

7

mixing device

8th

axis of rotation

9

mixer shaft

10

supporting frame

11

ball-bearing

12

drive wheel

13

drive wheel

14

drive shaft

15

drive motor

16

turntable

17

turntable

18

Turntable support

19

Turntable support

20

axis of rotation

21

Turntable drive

22

toothed belt

23

drive belts

24

idler pulley

25

drive wheel

26

Turntable drive shaft

53

cover plate

54

gear

55

gear

27

idler pulley

28

adjustment

29

spindle drive

30

jaw

31

jaw

32

spindle nut

33

spindle nut

34

screw

35

screw

36

actuator

37

Gear train

38

pinion

39

threaded rod

40

guide rod

41

guide rod

42

bearing block

43

bearing block

44

cutting wheel

45

reception camp

46

receiving opening

47

mixing room

48

slot recess

49

slot recess

50

free slot area

51

free slot area

52

cover plate

56

rack

57

Cover discs longitudinal axis

58

Cover discs longitudinal axis

Claims (15)

Mixer, in particular biaxial mixer, with a mixer housing (2) having a mixing chamber (47) into which a mixing material container can be introduced, wherein in the mixer housing (2), a mixing device (7) carrying a defined mixing movement, in particular a biaxial mixing movement, is added is, wherein the mixing device (7) opposing clamping plate (16, 17), in particular rotatable about a rotation axis turntable, and wherein at least one of the clamping plate (16, 17) by means of an adjusting device (28) of the mixing device (7) so displaced is that the distance between the two clamping plates (16, 17) is variable,
characterized,
that a partition (44) is provided, the defined components of the mixing device (7) so separated from each other, that the clamping plate (16, 17) of the mixing device (7) in the mixing space (47) protrude and (a defined part of the remaining mixing device 7 ), in particular the adjusting device (28) and / or for the actuation of the adjusting device and / or the mixing device (7) provided and in the mixer housing (2) arranged components or assemblies, on the mixing chamber side facing away from the partition (44). Mixer according to claim 1, characterized in that the at least one displaceable clamping plate (16, 17) has a clamping plate carrier (18, 19) on which the clamping plate (16, 17) rotatable is held and which clamping plate carrier (18, 19) from the mixing chamber (47) through a slot recess (48, 49) in the partition wall (44) through to the lying on the mixing chamber side facing away from the partition (44) adjustment (28) is guided and
in that the separating wall-side slot recess (48, 49) extends in the direction of displacement (28) of the associated tensioner carrier (18, 19) and releases a displacement path of the tensioner carrier (18, 19) within predetermined setting ranges. A mixer according to claim 2, characterized in that the slot recess (48, 49) is formed so that in a direction transverse to the displacement direction directly adjacent to the tensioner plate carrier (18, 19) or rests there. Mixer according to claim 2 or 3, characterized in that at least one cover element (52, 53) is provided, which is mounted in the region of the slot recess (48, 49) such that it passes through the free, not the clamping plate carrier (18, 19) Slot region (50, 51) of the slot recess (48, 49) in the different clamping plate carrier positions at least partially, preferably completely covers. Mixer according to claim 4, characterized in that a positive guide means is provided, by means of which the cover element (52, 53) and the clamping plate carrier (18, 19) is coupled so that the cover element (52, 53) for a clamping plate carrier displacement positively guided in a defined Covering position is displaced. Mixer according to claim 5, characterized in that the cover elements (52, 53) relative to the clamping plate carrier (18, 19) displaceable, in particular pivotable or rotatable, is supported on this, and
in that a first coupling element (54, 55) of the positive guidance device is arranged on the cover element (52, 53), which interacts directly or indirectly with a second stationary coupling element (56) of the positive guide device in such a way that the first coupling element (54, 55) moves in the event of a displacement of the clamping plate carrier (18, 19) by the indirect or ummittelbare forced coupling with the second coupling element (56) is displaceable relative to the clamping plate carrier in a defined covering position. Mixer according to claim 6, characterized in that the first coupling element on the cover (52, 53) by a form-locking element, preferably a gear (54, 55) or a toothed segment is formed, which with a second coupling element forming positive locking counter-element, preferably a rack (56), cooperates. Mixer according to claim 6 or 7, characterized in that the cover is formed by an elongated, in particular an elliptical or oval outer contour having cover plate (52, 53) which is eccentrically mounted on the clamping plate carrier (18, 19) such that the cover (52, 53) in one, with respect to the slot recess longitudinal direction, upper or lower dead center position of the tensioner carrier (18, 19) with its cover disc longitudinal axis (57, 58) is aligned approximately in slot recess longitudinal direction and thereby the cover (52 , 53) with their, relative to the eccentric bearing, longer side which extends away from the respective pan plate carrier dead center position, to the other dead point extending free slot area (50, 51) of the slot recess (48, 49) covers. Mixer according to claim 8, characterized in that the elongated, in particular elliptical or oval, outer contour of the cover (52, 53) and / or the positive guide means is formed so that the cover (52, 53) during the displacement of the tensioner carrier (18, 19) from one dead center position to the other dead center position is rotatable so that the cover plate (52, 53) is aligned in two dead center positions with its cover disk longitudinal axis (57, 58) approximately in Schlitzausnehmung longitudinal direction and thereby the cover (52, 53 ) each with its longer side away from the respective pan plate carrier dead center position, to the other dead point extending free slot area (50, 51) of the slot recess (48, 49) covers. Mixer according to one of claims 7 to 9, characterized in that the rack (56) is arranged on the mixing chamber side facing away from the partition (44) and arranged substantially parallel and spaced therefrom at least one guide rod, wherein the rack (56) and the at least one guide rod (40, 41) between two each movable displaceable clamping plate carriers (18, 19) extend and the cover element side gears (54, 55) or toothed segments in the region between the rods (40, 41, 56) are arranged, preferably provided in that a receiving bearing (45) for a mixer shaft (9) is arranged and supported on the rods (40, 41, 56), preferably in a central region of the longitudinal extension direction of the rods which mixer shaft (9), the entire mixing device (7), preferably driven by a motor, is rotatable clockwise and / or counterclockwise. Mixer according to one of the preceding claims, characterized in that the dividing wall (44) is formed by a cutting disc, preferably a cutting disc with a round or oval outer contour. Mixer according to one of claims 4 to 11, characterized in that the cover (52, 53), in particular a cover, abuts or is arranged in a planar abutment connection or with a defined gap distance on the partition wall and displaceable relative to this, in particular rotatable or swiveling, is. Mixer according to one of the preceding claims, characterized in that the adjusting device (28) has a spindle drive (29) with a threaded spindle (34, 35) which threaded spindle (34, 35) on the mixing chamber side facing away from the partition (44) fixed and rotatable is arranged and on the side facing away from the mixing chamber of the partition (44) with the tensioner carrier (18, 19) or a there arranged and a spindle nut (32, 33) having tensioner carrier part bearing element (30, 31) for adjusting the associated tensioner carrier (18, 19), wherein it is preferably provided that the tensioner carrier part bearing element (30, 31) along at least one guide rod (40, 41) is slidably mounted. Mixer according to one of the preceding claims, characterized in that a defined part facing away from the mixing chamber Side of the partition (44) lying components or assemblies, in particular the adjustment (28) and / or required for mixer operation and / or actuation of the adjustment (28) components or assemblies, at least partially indirectly and / or directly on the mixing chamber side facing away the partition (44) are fixed, in particular to a stationary receiving warehouse (45) and optionally alternatively or additionally to the partition wall (44) are fixed. Mixer according to claim 13 or 14, characterized in that in two adjustable clamping plate carriers (18, 19) two separate and spaced-apart slot recesses (48, 49) are provided, in each of which a clamping plate carrier (18, 19) is displaceably guided,
in that the partition (44), with respect to the slot recesses (48, 49), opposite, the slot recesses (48, 49) between them having partition wall portions, on spaced bearing blocks (42, 43) is supported, where that with the cover-side positive-locking elements, in particular toothed wheels (54, 55) or toothed segments, interacting form-fitting counter-elements, in particular a toothed rack (56), each end-mounted and / or on which the at least one guide rod (40, 41), along which the tensioner carrier parts (18, 19 ) are displaceably guided, is mounted end, wherein both the guide rods (40, 41) and the positive locking counter element (56) on the mixer shaft (9) of a drive unit receiving receiving bearing (45) are supported, and
in that the mixer unit (7) is rotatably mounted and held in the mixer housing (2).

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