DE102015106419A1 - Agitator and container with stirrer - Google Patents

Abstract

The invention relates to an agitator (1) for mixing and moving in a container (3) located substrates (30) in the form of liquids or liquid-solid mixtures, with at least one or more stirring blades (25), in the container ( 3) arranged in at least one rotor bearing (22.1, 22.2) mounted rotor (2) which is rotatable about an axis of rotation (20), and with a rotor (2) driving the drive (28). The agitator (1) according to the invention is characterized in that the rotor (2) along its axis of rotation (20) is designed with at least two rotor regions (2 ', 2' ') of different conveying effect on the substrate (30), wherein a first Rotor region (2 ') with a predominantly axial conveying action in the direction of the axis of rotation (20) and a second rotor portion (2' ') with a stronger radial conveying action transverse to the direction of the axis of rotation (20) is executed. In addition, the invention relates to a container (3) with such a stirrer (1).

Description

The invention relates to an agitator for mixing and moving substrates located in a container in the form of liquids or liquid-solid mixtures, having at least one one or more stirring blades, arranged in the container, mounted in at least one rotor bearing rotor, which is about an axis of rotation is rotatable, and with a drive driving the rotor. Moreover, the invention relates to a container with a stirrer.

An agitator of the type indicated above is made DE 20 2006 004 982 U1 known. The agitator comprises at least one drive, a wall-side stirrer shaft bearing fixed to the wall of the container, an agitator shaft bearing supporting at the bottom of the container via at least one support, and at least one rotor having a stirrer shaft with at least one agitating blade attached to the stirrer shaft. In this case, the stirring shaft extends parallel to the bottom of the container from the wall of the container in the direction of the main axis of the container. Preferably, a plurality of stirring blades are attached to the stirring shaft, wherein the stirring blades are further preferably offset along the Rührwellenachse offset from each other radially outwardly pointing attached to the agitator shaft. The stirring blades preferably each comprise two side parts and at least one bridge profile, wherein the two side parts are interconnected by the bridge profile. The radial length of the stirring blades is substantially greater than the axial width of the stirring blades.

Another agitator is out EP 2 656 909 B1 known. The agitator here comprises a rotor having a shaft which is rotatable about an axis of rotation and at least two stirring paddles which are spaced apart from one another in the axial direction and in the circumferential direction of the shaft. The stirring paddles are each connected to the shaft at their radially inner end, so that the stirring paddles move in the circumferential direction during operation. Further, the agitator includes a connector extending between the stirring paddles, the connector being spaced radially inwardly from the outer end of the stirring paddle. The connector connects the stirring paddles along a helix.

A disadvantage is considered in the known agitators that their efficiency, i. E. the achieved mixing and movement of the substrates in the container in relation to the drive power used in the agitator, is low, whereby an unfavorably high energy consumption is caused.

It is therefore the object to provide an agitator of the type mentioned above and a container with such a stirrer, in which an improved efficiency and thus a lower energy consumption with intensive mixing and movement of the substrates in the container can be achieved.

The solution of the first, the agitator part of the task succeeds according to the invention with an agitator of the type mentioned, which is characterized in that the rotor is seen along its axis of rotation with at least two rotor regions of different conveying effect on the substrate, wherein a first rotor portion with a predominantly axial conveying action in the direction of the axis of rotation and a second rotor portion with a stronger radial conveying action is carried out transversely to the direction of the axis of rotation.

With the invention, an agitator is provided, the rotor or rotors with their different conveying effects or directions cause a particularly effective movement and mixing of the substrate in the container. The different rotor areas are selected and determined appropriately depending on the arrangement of the rotor in the container and the geometry of the container with the aim of generating the desired flow as effective as possible.

In a first development it is provided that the agitator is designed for a standing, round or polygonal container and that the at least one rotor is arranged lying in the radial direction of the container or in a direction obliquely thereto. The orientation of the rotor of the agitator here corresponds to that of conventional agitators, so that, for example, in a modernization parts of an older agitator, such as storage and possibly also the drive, can continue to be used while the rotor is replaced.

Next, the invention provides that the rotor at one end in a first, supported by a support in the container container side rotor bearing and at its second end in a second, on or in a container wall or near a container wall outside or inside of this wall-mounted rotor bearing is stored or storable.

In the operation of the agitator, the substrate of the rotor with its axially inner container-side rotor region is preferably predominantly in the radial direction of the container from the inside to the outside and with its axially outer, wall-side rotor region from the rotor radially away in the circumferential direction of the container conveyed. This creates an effective flow and thorough mixing of the entire contents of the container. In this case, the centrifugal force effect generated by the rotation of the rotor is particularly advantageously used on the substrate for the promotion in the axially outer, wall-side rotor region radially away from the rotor in the circumferential direction of the container. Alternatively, by reversing the direction of rotation of the rotor or the rotors and a reverse flow can be generated.

Depending on the desired or required flows in the container, the axis of rotation of the rotor in a horizontal direction or in a direction of the container to the inside of the container at an angle of up to 30 ° obliquely downward or upward direction. The rotor can be fixed or alternatively also angularly adjustable at a certain angle.

Another possibility of targeted flow control is that the axis of rotation of the rotor extends at an angle of up to 30 ° obliquely to the radial direction of the container. The rotor can also be arranged fixed or alternatively angle-adjustable here at a certain angle.

In a further embodiment of the agitator, in which it is also designed for a standing, round or polygonal container, it is provided that the at least one rotor is arranged standing in the axial direction of the container or a direction obliquely thereto and eccentrically or centrally in the container. With this arrangement of the rotor or multiple rotors, an effective movement and mixing of the substrate in the container can be generated.

It is preferably provided to achieve a stable mounting of the rotor that the rotor at its one, upper end in a first, in or above the container arranged above the upper rotor bearing and at its second, lower end in a second bottom in the container or on a Container bottom arranged lower rotor bearings stored or storable.

During operation of the agitator described last, the substrate can advantageously be conveyed from the rotor with the axially upper rotor region predominantly in the axial direction of the container from top to bottom and with the axially lower rotor region away from the rotor in the radial direction of the rotor. In this case, floating components are conveyed downwards on the substrate and effectively mixed into the substrate. In addition, the centrifugal force effect generated by the rotation of the rotor on the substrate for the promotion in the axially lower rotor region is also advantageously used radially away from the rotor. Alternatively, by reversing the direction of rotation of the rotor or the rotors, a reverse flow can also be generated here.

In an alternative embodiment, the agitator is designed for a horizontal, round or polygonal container, in which case the at least one rotor is arranged in the container in a direction running parallel or transversely or obliquely to the axial direction of the container. Thus, with the agitator according to the invention, intensive mixing and movement of the substrate can also be effected in a horizontal container.

Another contribution to achieving a good efficiency and generating favorable flow conditions is that preferably the rotor areas of different conveying effect are performed continuously merging into each other.

In a further embodiment of the invention, it is proposed that the / each stirring blade is designed as a flat, continuous or segmented material strip running along a helix over the full axial length of the rotor, carried by at least two spokes of the rotor, and that the / each stirring blade in the stirring blade longitudinal direction seen having a changing from one rotor end to the other end of the rotor end alignment of its blade surface relative to the radial direction of the rotor. In this way, the rotor areas of different conveying effect on the substrate technically relatively simple, but effective, are generated, which keeps the production of the agitator, in particular the rotor, relatively inexpensive. In a simple embodiment, the material strips forming the stirring blades are of constant width over their length. But it is also possible, as seen in the longitudinal direction of the strip of material whose width to vary specifically to achieve location-dependent different, respectively desired conveying effects.

A preferred development of the last-described agitator provides that the / each stirring blade at one end of the rotor has an orientation of its blade surface pointing in the radial direction of the rotor and at the other end of the rotor has an orientation of its blade surface tilted to the radial direction of the rotor. The rotor region, in which the helically extending stirring blades have an orientation of their blade surface pointing in the radial direction of the rotor, thus has a predominantly axial conveying action, while the rotor region, in which the stirring blades have an orientation of their blade surface tilted to the radial direction of the rotor, has a stronger radial Has conveying effect.

In the agitator according to the invention, the helix, along which the / each stirring blade runs, seen in the direction of the axis of rotation of the rotor have a constant screw pitch. This is then connected over the axial length of the rotor substantially uniform conveying effect in Rotoraxialrichtung.

Alternatively, the helix, along which the / each stirring blade extends, seen in the direction of the axis of rotation of the rotor having a changing pitch screw. This can be used to generate an axial conveying length that changes over the axial length of the rotor.

In a further embodiment, preferably the helical line, along which the / each stirring blade extends, has a smaller helical pitch in one rotor region than in the other rotor region, whereby correspondingly different delivery effects are produced in the rotor regions.

A further embodiment of the agitator provides that the helix, along which the / each stirring blade extends, has a constant distance from the axis of rotation of the rotor.

Alternatively, the helix, along which the / each stirring blade extends, may have a varying distance to the axis of rotation of the rotor as viewed in the direction of the axis of rotation of the rotor.

In this case, it is then preferably provided that the helical line, along which the / each stirring blade runs, has a smaller distance from the axis of rotation of the rotor in one rotor region than in the other rotor region. This embodiment of the rotor may e.g. be advantageous if the axis of rotation of the rotor of the agitator in the container has an inclination to the horizontal direction.

In order to further increase the efficiency of the agitator according to the invention, the invention provides that the spokes are designed as conveying elements for the substrate, that in the first rotor region arranged first spokes are designed with a predominantly axial conveying action in the direction of the axis of rotation of the rotor and that in the second Rotor region arranged second spokes are designed with a predominantly radial conveying action transverse to the direction of the axis of rotation of the rotor or with a predominantly axial conveying action against the axial conveying action of the first spokes. In this embodiment of the agitator also the spokes are involved in generating the flow of the substrate and thus support the flow generation by the stirring blades.

Furthermore, the invention provides that the / each rotor has a continuous, in each case a rotor bearing mounted rotor shaft or that the / each rotor has two end-side shaft stumps, which are mounted in a respective rotor bearing. The choice between the two embodiments given here depends in particular on the loads occurring in the operation of the agitator.

For embodiments of the agitator in which one or more rotor bearings are provided on or in a container wall or on or in a container bottom, the invention proposes that a fixed flow guide is arranged on the container wall in front of the wall-side rotor bearing or on the container bottom in front of the bottom rotor bearing or in that a co-rotating flow guide body is arranged on the rotor in front of the wall-side or the bottom-side rotor bearing. Hereby, the load on the bearings is reduced by oncoming substrate, which simplifies the sealing of the bearings and extends their life. Also in connection with shaft passages through a wall of the container such flow guide are useful.

The spokes which carry the stirrer blades of the agitator are preferably designed to run straight in or curved to the radial direction of the rotor, depending on what effect the spokes are to deploy during the rotation of the rotor.

In one embodiment of the agitator, it is provided that the rotor has a single stirring blade, that the stirring blade extends over a helix angle of 360 ° or an integer multiple thereof and that the rotor has at least two spokes bearing the stirring blade at least at the ends. The fact that the stirring blade extends over a helix angle of 360 ° or an integer multiple thereof, ensures that even at a low level of the substrate in the container, in which the rotor is partially above the substrate mirror, a completely uniform moment of resistance at the rotating Rotor is obtained, whereby torque fluctuations or shocks, which are harmful to bearing and drive of the rotor can be avoided.

Alternatively, it is provided for the agitator, that the rotor has a number of n stirring blades, where n> 1, that the stirring blades are distributed uniformly over the circumference of the rotor, that each stirring blade over a helix angle of 360 ° / n or a Whose integer multiple thereof extends and that the rotor per agitator blade has at least two the stirring blade at least end face bearing spokes. Also in this embodiment, the advantage of a uniform resistance or torque is achieved at partially above the substrate level or mirror lying rotor.

A further embodiment of the agitator proposes that the first rotor region, which has a predominantly radial conveying action transverse to the direction of the axis of rotation of the rotor, is additionally designed with a conveying action opposite to that of the second rotor region with the predominantly axial conveying action in the direction of the axis of rotation of the rotor. With this measure, a deflection of the substrate flow from the axial direction of the rotor is supported in a radial direction to this direction.

In many applications of agitators, an undesirable floating layer of lighter solids may form on the substrate. To remedy this problem, it is provided that the rotor is provided with fingers projecting radially outwardly beyond the / each stirring blade, preferably connected or integral with the stirring blade (s). As the rotor rotates, these fingers ensure that the material of a possibly present floating layer is conveyed down into the substrate and thus is effectively mixed into the substrate.

In order to avoid catching and collecting material from the floating layer on the fingers in the last-described blending process, the invention provides that the fingers protruding radially outwardly beyond the / each agitating blade provide an inclination to the radial direction of the rotor facing the working direction of rotation of the rotor exhibit. A suitable angle of inclination can be determined, for example, depending on the properties of the floating layer material by experiments, on the one hand a sufficient entrainment effect on the material of the floating layer is to be ensured without the floating layer material can permanently catch on the fingers. Preferably, the fingers are arranged at a fixed angle to the rotor. But it is also possible to store the fingers pivotable on the rotor and if necessary to adjust their orientation.

Depending on the size of the container, is to be moved and mixed in the substrate, agitators may be provided with one or more rotors, which in the case of multiple rotors in the circumferential direction of the container or spaced from each other in the axial direction of the container may be arranged in the container.

The solution of the second, the container for mixing and moving substrates in the form of liquids or liquid-solid mixtures relevant part of the task succeeds according to the invention with a container having an agitator according to one of claims 1 to 29.

The stirrer according to the invention can be used particularly advantageously in fermenter tanks, e.g. of biogas plants, but also in other applications in which to be mixed in a container substrates in the form of liquids or liquid-solid mixtures and move.

In the following, embodiments of the invention will be explained with reference to a drawing. The figures of the drawing show:

1 a stirrer in a first embodiment, in a standing, only partially illustrated container, in view obliquely from above,

2 the agitator off 1 together with the container, in plan view,

3 the agitator off 2 with flow indicated by flow arrows of a substrate in the container, likewise in plan view,

4 the agitator in a modified version, in the same representation as in 2 .

5 the agitator off 4 seen in an end view in the radial direction of the container from the inside to the outside,

6 the agitator in a further embodiment, in plan view,

7 the agitator in a further embodiment, in plan view,

8th the agitator in a further embodiment, in front view,

9 the agitator in a further embodiment, in plan view,

10 the agitator off 9 with indicated by flow arrows flow of a substrate in the container, in plan view,

11 the agitator in a further embodiment, in side view,

12 a rotor of the agitator with a stirring blade, in a first embodiment, in side view,

13 the rotor with a stirring blade, in a second embodiment, in side view,

14 the rotor with two stirring blades, in a first embodiment, in side view,

15 the rotor with two stirring blades, in a second embodiment, in side view,

16 the rotor with four stirring blades, in a first embodiment, in side view,

17 the rotor with four stirring blades, in a second embodiment, in side view,

18 the rotor with six stirring blades, in a first embodiment, in side view,

19 the rotor with six stirring blades, in a second embodiment, in side view,

20 the rotor with eight stirring blades, in a first embodiment, in side view,

21 the rotor with eight stirring blades, in a second embodiment, in side view,

22 the rotor with four blades, in a modified version, in side view,

23 off the rotor 22 in cross-section along the section line AA in 22 .

24 off the rotor 22 in cross-section along the section line BB in 22 .

25 off the rotor 22 in cross-section along the section line CC in 22 .

26 the rotor with four blades, in a modified version, in side view,

27 the rotor with four stirring blades, in a further modified version, in side view,

28 the rotor with four stirring blades, in a further modified embodiment, in side view,

29 a rotor with radially outer fingers, in an end view,

30 a section of a rotor shaft with a visible in section spoke, in a first embodiment,

31 a section of the rotor shaft with the visible in section spoke, in a second embodiment,

32 the agitator in a further modified embodiment, in side view, in a vertical container,

33 the stirrer in a further modified embodiment, in side view, in a vertical container,

34 an agitator with three rotors arranged in a vertical container, in a plan view,

35 an agitator in side view in a horizontal container, in a first embodiment,

36 a stirrer with two juxtaposed rotors in a horizontal container, in a perspective view, with cut open container, and

37 a stirrer in side view in a horizontal container, in another embodiment.

In the following description of the figures, the same parts in the various drawing figures are always denoted by the same reference numerals, so that not all reference numerals have to be re-explained for each drawing figure.

1 The drawing shows a stirrer 1 in a first embodiment, in a standing, only partially illustrated container 3 , in view diagonally from above. The standing container 3 has an annular circumferential peripheral wall 31 and a floor 32 and is shown open at the top so that the inside of the container 3 arranged agitator 1 is visible. The container 3 For example, a fermentation tank of a biogas plant in which a substrate consisting of liquid and solids is to be moved and mixed. In practice, in such a container 3 a not shown here, known per se roof provided, which the container 3 covering the top gas-tight, the roof may be, for example, a plastic membrane.

To move and mix the substrate in the container 3 serves the agitator 1 which is a rotatable rotor 2 with four stirring blades here 25 having. The rotor 2 further comprises a continuous rotor shaft 21 which are horizontal as well as substantially radial to the container 3 runs. At its container end is the rotor shaft 21 in a rotor bearing 22.1 rotatably mounted, which in turn in one on the ground 32 of the container 3 standing support 23 is arranged. The other end of the rotor shaft 21 is through a shaft passage 38 in the container peripheral wall 31 from the container 3 led out and stored there by means of another rotor bearing. There is also a not visible here drive, such as electric motor or hydraulic motor, for the rotor 2 arranged.

Furthermore, the rotor 2 four first spokes each 24.1 and second spokes 24.2 on, perpendicular to the rotor shaft 21 aligned with this are attached. At the free ends of the spokes 24.1 . 24.2 are the ends 25.1 . 25.2 the stirring blades 25 supported.

The stirring blades 25 each consist of a flat, narrow strip of material, preferably steel, and have a relatively small width relative to their length. Furthermore, the stirring blades 25 so with the spokes 24.1 . 24.2 connected that the stirring blades 25 on the one hand run along a helix and on the other hand, the orientation of the surface of the stirring blades 25 relative to the radial direction of the rotor 2 changed in their course. The stirring blades 25 are thus wounded to a certain extent in themselves. In the embodiment according to 1 lies the plane of the stirring blades 25 at the first end 25.1 in the longitudinal direction of the spokes there 24.1 , ie in the radial direction of the rotor 2 , At the second end 25.2 the stirring blades 25 whose plane is no longer in the radial direction of the rotor 2 but in a twisted or tilted plane like that 1 in the area of the connection between the second spokes 24.2 and the ends there 25.2 the stirring blades 25 illustrated.

With this version and arrangement of the stirring blades 25 of the rotor 2 is achieved that the rotor 2 two areas 2 ' and 2 '' with different conveying effect on one in the container 3 receiving substrate. In the rotor area 2 ' practices the rotor 2 in operation a predominantly in the axial direction of the rotor 2 pointing conveying action on the substrate while the rotor 2 in the rotor area 2 '' a larger in the radial direction of the rotor 2 pointing promotional effect on the substrate. For example, a clockwise rotation of the rotor 2 generates its rotor area 2 ' a there in the axial direction of the rotor 2 and thus in the radial direction of the container 3 from inside to outside conveying effect, while the rotor area 2 '' there one in the radial direction of the rotor 2 and thus in the circumferential direction of the container 3 from the rotor 2 produced away-pointing conveying effect on the substrate. In the rotor area 2 ' becomes advantageous as a result of the rotation of the rotor 2 any resulting centrifugal force acting on the substrate to support the desired conveyance of the substrate in the circumferential direction of the container 3 from the rotor 2 exploited, resulting in high efficiency of the agitator 1 contributes.

Like from the 1 as further shown, the helix points along which each stirring blade 21 runs, here a helix angle of 90 °. With four stirring blades 25 , each extending over a helical angle of 90 °, results in an advantageous always uniform, from the respective rotational position of the rotor 2 independent intervention of the rotor 2 with his stirring blades 25 into the substrate in containers 3 even if the mirror of the substrate is so low that an upper part of the rotor 2 lies above the substrate mirror. This will cause irregularities in the rotation of the rotor 2 torque to be applied by a drive motor and the bearings of the rotor 2 stressful impacts or shocks during operation of the agitator 1 avoided.

A reverse direction of rotation of the drive of the rotor 2 is also possible; This inevitably results in a conveying effect of the rotor 2 on the substrate, which is opposite to the conveying effect described above.

2 shows the agitator 1 out 1 together with the container 3 in plan view. Here it is particularly clear that the container 3 a circular outline with the container peripheral wall 31 and the circular bottom 32 Has. Alternatively, the container 3 also have a polygonal or polygonal outline shape.

In the in 2 left area of the container 3 is the agitator 1 with the rotor 2 arranges, whose axial length is here about one quarter of the diameter of the container 3 extends. The rotor shaft 21 runs here in the radial direction of the container 3 and is at its center to the container 3 pointing end in support 23 stored. By means of the shaft passage 38 is the rotor shaft 21 at the other end through the container peripheral wall 31 passed through sealing. Outside the container 3 is the drive 28 , here an electric motor, for the rotor 2 of the agitator 1 arranged. The number and arrangement of the stirring blades 25 of the rotor 2 in 2 corresponds to the example 1 ,

3 shows the agitator 1 out 2 with indicated by flow arrows flow of a substrate in the container 3 , also in plan view, with in operation agitator 1 , With the rotary arrow on the rotor shaft 21 is the working direction here 20 ' of the rotor 2 indicated. Due to the different conveying effects of the rotor areas described above 2 ' and 2 '' turns in the container 3 within the substrate therein 30 through the flow arrows 30 ' and 30 '' illustrated flow. This results in the rotor area 2 ' a flow that is substantially in the axial direction of the rotor 2 and in the radial direction of the container 3 from inside to outside, while in the rotor area 2 '' the conveying effect stronger in the radial direction of the rotor 2 acts, causing there in the circumferential direction of the container 3 pointing circular flow 30 '' is produced. As in 3 is also illustrated with only one rotor 2 having stirrer 1 in the container 3 whose total content of substrate 30 set in motion and become the components of the substrate 30 while intensively mixed.

4 shows the agitator 1 in a modified version, in the same representation as in 2 , Different from the example below 1 and 2 here is that the orientation of the rotor 2 with its two different rotor areas 2 ' and 2 '' is reversed. The rotor area 2 ' with the predominantly in the axial direction of the rotor 2 pointing conveying action is here near the container peripheral wall 31 while the rotor area 2 '' with the predominantly or more strongly in the radial direction of the rotor 2 pointing conveying action at the of the container peripheral wall 31 remote side of the rotor 2 lies. This results, in addition, depending on the direction of rotation of the rotor 2 , further, changed conveying effects on a substrate in the container 3 which may be advantageous depending on the operating conditions present

5 shows the agitator 1 out 4 in an end view in the radial direction of the container 3 seen from the inside out. Facing the viewer is the support 23 that the rotor bearing 22.1 carries, in which the not visible rotor shaft of the rotor 2 is stored. In the radial direction here run the spokes 24.1 straight from the rotor shaft 21 outward. With the respective outer end of the spokes 24.1 are the stirring blades 25 connected in the orientation described above. Far left and far right in 5 is the peripheral wall 31 of the container 3 visible, noticeable. Down is the container 3 through the container bottom 32 limited.

6 shows the agitator 1 in a further embodiment in plan view. The rotor 2 with the rotor shaft 21 and the stirring blades 25 is here consistent with the example according to the 1 and 2 executed. There is a difference in the example 6 that here as part of the agitator 1 a flow guide 36 on the inner surface of the container peripheral wall 31 of the container 3 is arranged to the flow guidance of the substrate in the container 3 to assist to avoid flow-free dead zones and the shaft passage 38 in the container peripheral wall 31 to relieve. The flow guide 36 has a rounded wedge shape with the tip of the wedge to that of the container peripheral wall 31 facing side of the rotor 2 and wherein the concave rounded wedge surfaces on both sides of the tip tangentially into the inner surface of the container peripheral wall 31 pass.

7 shows the agitator 1 in a further embodiment in plan view. Again, the rotor 2 in accordance with the example according to the 1 and 2 executed. Characteristic of this embodiment is a flow guide 26 that is on the rotor shaft 21 is attached and in the operation of the agitator 1 together with the rotor 2 rotates. The flow guide 26 Here is a rotationally symmetric body, wherein the rotor 2 pointing side forms a concave rounded cone shape. Again, this is the operation of the agitator 1 through the rotor 2 generated substrate flow is favorably directed and supported and at the same time the shaft passage 38 in the container peripheral wall 31 Relieved from the flow pressure of the substrate.

8th shows the agitator 1 in a further embodiment, in front view, as a modification of the example according to 5 , Characteristic of the agitator 1 according to 8th is that its spokes 24.1 not straight in the radial direction of the rotor 2 run, but each have a curved shape. This curved shape can except the spokes 24.1 also the in 8th invisible spokes 24.2 exhibit. This form of spokes 24.1 . 24.2 can serve to generate a conveying effect as well as for the recording of the operation of the agitator 1 on the spokes 24.1 . 24.2 be favorable occurring mechanical loads.

9 shows the agitator 1 in a further embodiment in plan view, together with a again here round standing container 3 , Different from the previously described embodiments is here that the rotor shaft 21 of the rotor 2 of the agitator 1 in a relation to the radial direction of the container 3 is arranged obliquely. Incidentally, the agitator corresponds 1 to 9 the embodiment of the 1 and 2 ,

10 shows the agitator 1 out 9 with indicated by flow arrows flow of a substrate 30 in the container 3 , in top view. Again, by the agitator 1 in the rotor area 2 ' a predominantly in the axial direction of the rotor 2 extending conveying action in the direction of the flow arrows 30 ' caused in the substrate, while the container peripheral wall 31 facing rotor area 2 '' a stronger conveying action in the radial direction of the rotor 2 and thus in the circumferential direction of the container 3 running flow 30 '' produced in the substrate. Overall, this results in two flow circuits of different sizes, wherein in the region of the rotor 2 the substrate 30 is mixed and exchanged between the flow circuits.

11 shows the agitator 1 in a further embodiment, in side view. Characteristic of this agitator 1 are two features, namely, on the one hand, that the rotor shaft 21 with a slope to the horizontal direction, and on the other hand, that the radial distance of the stirring blades 25 of the rotor shaft 21 Seen over the axial length is different.

The inclination of the rotor shaft 21 runs here from the container peripheral wall 31 looking down towards the interior of the tank. The inner end of the rotor shaft 21 is also here in a support 23 stored and supported.

The radial distance of the stirring blades 25 from the rotor shaft 21 is at the inside of the container 3 pointing end of the rotor 2 smaller and at the container peripheral wall 31 pointing end of the rotor 2 greater. Accordingly, the first spokes are also 24.1 of the rotor 2 shorter than the near-wall spokes 24.2 , This ensures that the stirring blades 25 of the rotor 2 over its entire length relatively close to the bottom of the container 32 can be moved to settle solids from the substrate on the container bottom 32 to avoid.

The rotor 2 of the agitator 1 can be designed differently in various respects, in particular with regard to its shaft and the number of its stirring blades, as will be explained below with reference to several corresponding embodiments.

The 12 shows a rotor 2 of the agitator 1 with a single stirring blade 25 , in a first version, in side view. The stirring blade 25 also runs along a helical line over a helix angle of 360 °. For its storage, the rotor has 2 here two stumps 21.1 . 21.2 at its two rotor ends 2.1 . 2.2 , With every stub shaft 21.1 . 21.2 is each a spoke 24.1 . 24.2 connected. With the free end of the spokes 24.1 . 24.2 is the stirring blade 25 , which also here has the form of a narrow strip of material, at its ends 25.1 . 25.2 connected. At the in 12 right end 25.1 of the stirring blade 25 its surface plane is in the radial direction of the rotor 2 , ie in the longitudinal direction of the radially extending right spoke 24.1 , At the in 12 left end 25.2 of the stirring blade 25 whose surface plane extends obliquely to the radial direction of the rotor 2 and thus also obliquely to the longitudinal direction of the spoke extending there in the radial direction 24.2 , Again, so is the stirring blade 25 twisted in its course along the helix in itself. As a result, even with this only a single stirring blade 25 having rotor 2 two rotor areas 2 ' and 2 '' formed due to the respective orientation of the surface plane of the stirring blade 25 the rotor area 2 ' a stronger conveying effect in the axial direction of the rotor 2 and the rotor area 2 '' a stronger conveying action in the radial direction of the rotor 2 having.

By means of his stumps 21.1 . 21.2 is the rotor 2 around a rotation axis 20 rotatably storable and by means of a on one of the stub shafts 21.1 . 21.2 attacking drive in rotation displaceable.

13 shows the rotor 2 with a single stirring blade 25 in a second embodiment, in side view. Different from the previously described embodiment is here that the rotor 2 a continuous rotor shaft 21 instead of the two shaft stumps. With regard to the other parts and properties corresponds to the rotor 2 according to 13 for example 12 ,

14 shows the rotor 2 with two stirring blades 25 in a first embodiment in side view. The two stirring blades 25 are mutually offset by 180 ° in the circumferential direction in the rotor 2 arranged and run again each along a helix, which here each describes a helix angle of 180 °. For rotatable mounting of the rotor 2 serve here again two stumps 21.1 and 21.2 , From the stump 21.1 go two first spokes 24.1 and from the stub shaft 21.2 two second spokes 24.2 in the radial direction, with the spokes 24.1 . 24.2 each other by 180 ° in the circumferential direction of the rotor 2 are offset. At the free end of the spokes 24.1 . 24.2 are the ends 25.1 and 25.2 the stirring blades 25 appropriate. As in the previous example, the surface plane of the stirring blades 25 at the end 25.1 in the radial direction of the rotor 2 while at the other end of the rotor 2 at the end 25.2 the stirring blades 25 whose surface plane oblique to the radial direction of the rotor 2 are aligned. Thus, here too, the previously described rotor areas arise 2 ' and 2 '' with at the rotation of the rotor 2 mutually different conveying effect on a substrate.

15 shows the rotor 2 with two stirring blades 25 in a second embodiment, in side view. Different for example after 14 is here that the rotor 2 a continuous rotor shaft 21 has instead of two stumps. Incidentally, the rotor corresponds 2 in 15 for example 14 ,

16 shows the rotor 2 with four stirring blades 25 in a first embodiment in side view. The rotor 2 here again has two stub shafts arranged in alignment with each other 21.1 . 21.2 on each of which four spokes 24.1 . 24.2 in the radial direction at an angular distance of 90 ° to each other. With the free ends of the spokes 24.1 . 24.2 are again the stirring blades 25 by means of their ends 25.1 . 25.2 connected. Again, the stirring blades run 25 along a helical line, each describing a helix angle of only 90 °. Again, the stirring blades 25 as seen along its length, where the surface level of the stirring blades 25 at the end 25.1 in the radial direction and at the end 25.2 obliquely to the radial direction of the rotor 2 runs. Thus arise also in this embodiment of the rotor 2 the two with respect to their respective conveying effect different rotor areas 2 ' and 2 '' as already described above.

17 shows the rotor 2 with four stirring blades 25 in a second embodiment, in side view, the difference to the example 16 It is that here the rotor 2 a continuous rotor shaft 21 has. With regard to the other parts and properties of the rotor 2 in 17 this agrees with the example according to 16 match.

18 shows the rotor 2 with six stirring blades 25 , in a first version, in side view. This rotor 2 has two stumps 21.1 . 21.2 to its rotatable storage. With every stub shaft 21.1 . 21.2 are six spokes 24.1 . 24.2 connected at a respective angular distance of 60 ° to each other in the radial direction of the stub shaft 21.1 . 21.2 extend to the outside. With the free ends of the spokes 24.1 . 24.2 are again the stirring blades 25 by means of their ends 25.1 . 25.2 connected. Again, the stirring blades run 25 along a helical line, each describing a helical angle of 60 °. Again, the stirring blades 25 As seen along its length, twisted in itself, wherein the surface plane of the stirring blades 25 at the end 25.1 in the radial direction and at the end 25.2 obliquely to the radial direction of the rotor 2 runs. Thus arise also in this embodiment of the rotor 2 with six stirring blades 25 the two with respect to their respective conveying effect different rotor areas 2 ' and 2 '' as already described above.

19 shows the rotor 2 with six stirring blades 25 in a second embodiment, in side view, in which case compared to for example 18 instead of two stub shafts a continuous rotor shaft 21 in the rotor 2 is provided.

20 shows the rotor 2 with eight stirring blades 25 , in a first version, in side view. For rotatable mounting of the rotor 2 serve here again two stumps 21.1 . 21.2 , According to the number of stirring blades 25 are here with each stump 21.1 . 21.2 at an angular distance of 45 ° to each other eight spokes 24.1 . 24.2 connected, extending from the respective stub shaft 21.1 . 21.2 extend radially outward.

The stirring blades 25 are with their ends 25.1 . 25.2 each with the end of one of the spokes 24.1 . 24.2 connected. Here are the stirring blades 25 here also run along a helical line, wherein the helices extend here in each case over a helix angle of 60 °. At the same time, here also show the stirring blades 25 seen in the longitudinal direction in such a twist on that the surface plane of the stirring blades 25 at the end 25.1 in the radial direction of the rotor and at its end 25.2 obliquely to the radial direction of the rotor 2 is aligned. This also shows this rotor 2 the two rotor areas 2 ' and 2 '' different promotion effect on.

21 shows the rotor 2 with eight stirring blades 25 in a second embodiment, in side view, the difference to the example 20 It is that the rotor 2 here a continuous rotor shaft 21 instead of stub shafts. The other parts and properties of the rotor 2 to 21 correspond to those of the example according to 20 ,

22 shows the rotor 2 in a version with four stirring blades 25 , now with two groups of additional spokes 24.3 between the end spokes 24.1 and 24.2 , in side view. The four stirring blades 25 run again along each helix, each covering a helix angle of 90 °. The slope of the helix is over the axial length of the rotor 2 not constant, but increases in the axial direction of the rotor 2 seen from right to left. The spokes 24.1 . 24.2 . 24.3 Here are each again with a continuous rotor shaft 21 connected and extend at an angular distance of 90 ° to each other from the rotor shaft 21 in the radial direction to the outside. With their ends 25.1 are the stirring blades 25 with the axially outer first spokes 24.1 and with their ends 25.2 with the axially outer second spokes 24.2 connected. The stirring blades 21 are also twisted here, with the surface plane of the stirring blades 25 at the first end 25.1 in the radial direction of the rotor 2 and at its second end 25.2 obliquely to the radial direction of the rotor 2 is aligned. So also here are rotor areas 2 ' and 2 '' formed different promotion effect. Between the frontal spokes 24.1 and 24.2 are the stirring blades 24 to increase the stability and load capacity of the rotor 2 with the two additional sets of spokes 24.3 connected, being in the area of the spokes 24.1 and 24.3 the stirring blades 25 not yet wrapped in themselves; the twisting of the stirring blades 25 extends only over the rotor area 2 '' ,

23 shows the rotor 2 out 22 in cross-section along the section line AA in 22 , In the center of 23 is the cut rotor shaft 21 visible from which the spokes 24.3 extend radially outward. With the radially outer end portion of the spokes 24.3 are the four stirring blades 25 connected, whose twist only before the in 23 facing the viewer front group of spokes 24.3 begins; behind the in 23 front group of spokes 24.3 show the stirring blades 25 still no distortion. In addition, it can be seen here that each stirring blade 25 extends along a helix over a helix angle of 90 °.

24 shows the rotor 2 out 22 in cross-section along the section line BB in 22 , this section through a torsion-free section of the stirring blades 25 of the rotor 2 runs like that 24 clearly shows. Behind the spokes 24.3 the rear additional spoke group are at the side facing away from the viewer end face of the rotor 2 circumferentially offset spokes 24.1 visible, noticeable.

25 shows the rotor 2 out 22 in cross-section along the section line CC in 22 , this section just before the viewer facing away from the front end of the rotor 2 runs. Thus, in 25 only the frontal spokes 24.1 attached to the rotor shaft 21 are attached, as well as at each end of the spokes 24.1 a short piece of there attached agitator blades 25 visible, noticeable.

26 shows a rotor 2 with four stirring blades 25 in one opposite to the example 22 slightly modified version, in side view. The change here is that at the in 26 left end 2.2 of the rotor 2 a disk-shaped flat flow guide 26 is arranged, with the rest of the rotor 2 , specifically with its continuous rotor shaft 21 , is connected and thus in the operation of the rotor 2 with this one turns. The flow guide 26 assists in guiding the substrate flow in the radial direction of the rotor 2 passing through its rotor area 2 '' is produced.

27 shows again the rotor 2 with four stirring blades 25 in side view, as in 26 , but now with a modified flow guide 26 , The flow guide 26 here has a three-dimensional shape in the shape of a concentric with the rotor shaft 21 arranged, with this connected cone with concave rounded lateral surface, thus, when the rotor 2 is driven counterclockwise as seen from its left end, a flow deflection of the substrate from a in the axial direction of the rotor 2 from right to left directed flow in the rotor area 2 ' in a radial direction of the rotor 2 from inside to outside direction in the rotor area 2 '' is supported.

28 shows a rotor 2 with four stirring blades 25 , in another modified version, in side view. Characteristic of this version of the rotor 2 is that he, in 28 Seen from right to left, axially behind the with a predominantly radial conveying action transverse to the direction of the axis of rotation 20 of the rotor 2 executed second rotor region 2 '' additionally a third rotor area 2 ''' having. This third rotor area 2 ''' is with one of the conveying effect of the first rotor region 2 ' with the predominantly axial conveying action in the direction of the rotor shaft 21 of the rotor 2 executed opposite predominantly axial conveying action. In this way, in the third rotor area 2 ''' caused a counterflow, which together with the second rotor portion 2 '' a particularly effective flow deflection of the substrate from the axial direction from right to left in the radial direction of the rotor 2 effected radially outward away.

With regard to the further individual parts and properties of the rotor 2 according to 28 is based on the previous description, in particular the 22 , with which there is agreement.

29 shows a rotor 2 with radially outer fingers 27 in a front view. In this case, the radially outward over the / each stirring blade 25 protruding fingers 27 with the stirring blade / the stirring blades 25 connected or made in one piece. The finger 27 serve to rotate the rotor 2 in his direction of rotation indicated by a rotary arrow 20 ' around its axis of rotation 20 detecting floating or floating solid particles on or in the liquid substrate and moving down and mixing in the liquid substrate, this rotor being particularly effective when it extends beyond the mirror of the substrate with a smaller upper area. In this case, floating solid material is reliably detected on the surface of the substrate and mixed into the substrate, wherein a disturbing permanent solid particles on the fingers 27 by their counter to the working direction 20 ' pointing skew is prevented.

30 shows a portion of a rotor shaft 21 with a visible in section spoke 24.1 in a first embodiment. Characteristic of the spoke shown here 24.1 is that this is formed from a flat, slanted strip of material, such as steel flat profile, bringing the spoke 24.1 upon rotation of the rotor shaft 21 in turn, in the manner of a propeller itself exerts a conveying effect on the substrate and thus the conveying effect of the rest of the rotor 2 supported.

31 also shows a section of the rotor shaft 21 with the visible in the cut spoke 24.1 , in a second version, which is that here the spoke 24.1 is designed as a rectangular hollow profile and thus has a higher mechanical strength. The spoke 24.1 here also has one to the circumferential direction of rotor shaft 21 oblique orientation, whereby it also exerts itself a conveying effect on the substrate.

Also in the 30 and 31 not shown spokes 24.2 . 24.3 can be designed according to these figures. Except in the 30 and 31 shown cross-sectional shapes, the spokes 24.1 . 24.2 . 24.3 also have other cross-sectional shapes, such as the shape of curved blades or wing profiles, to increase their conveying effect.

32 shows the agitator 1 in a further modified embodiment, in side view, in a standing container. Characteristic of this version of the agitator 1 is that the stirring blades 25 not here as a continuous strip of material, but segmented, that is in the form of successively arranged with gaps Rührblattsegmenten 25 ' , are executed. Each stirring blade segment 25 ' is at least one spoke 24.1 . 24.2 . 24.3 assigned, so that all stirring blade segments 25 ' being held.

In its other parts and properties corresponds to the agitator 1 according to 32 the example according to the 1 and 2 ,

33 shows the agitator 1 in a further modified embodiment, in side view, in a standing container 3 , wherein for this version of the agitator 1 it is characteristic that its rotor shaft 21 runs vertically here. Next to the rotor shaft 21 owns the rotor 2 of the agitator 1 here four blades 25 attached to four of the rotor shaft 21 outgoing spokes 24.1 at the first, upper rotor end 2.1 and four of the rotor shaft 21 outgoing spokes 24.2 at the second, here lower rotor end 2.2 are attached. The stirring blades 25 each again run along a helical line, which in each case extends over a helix angle of 90 °. In addition, here also have the stirring blades 25 in itself a twist, wherein the stirring blades 25 at its first, upper end 25.1 with its blade surface in the radial direction of the rotor 2 while at its second, lower end 25.2 the leaf area of the stirring blades 25 obliquely to the radial direction of the rotor 2 runs. Thus, here too, the rotor points 2 two rotor areas 2 ' and 2 '' different conveying effect on a in the container 3 located substrate.

If the rotor 2 , seen from above, is turned left, the upper rotor area promotes 2 ' with a predominantly axial conveying direction substrate from top to bottom, while the second rotor region 2 '' the substrate predominantly in the radial direction of the rotor 2 promotes to the outside. Even with this vertical arrangement of the rotor 2 of the agitator 1 So it's going to be in the container 3 substrate is effectively set in motion and mixed. A not shown here drive of the rotor 2 can be conveniently arranged above a substrate mirror, with a complex shaft passage for the rotor shaft 21 through the container wall 31 is avoided.

For rotatable mounting of the rotor 2 and the rotor shaft 21 serve here an upper rotor bearing 22.1 that is in one of the container wall 31 in the container 3 cantilevered support 23 is arranged, and a lower rotor bearing 22.2 that on the tank bottom 32 is arranged.

For containers 3 up to a certain size or volume, the arrangement of a single rotor is sufficient 2 in practice. For extra large containers 3 It may also be appropriate or necessary to have multiple rotors therein 2 provided. An example of this shows the 34 with three in a standing container 3 arranged rotors 2 in a top view. The rotors 2 and rotor shafts 21 of the agitator 1 Here, each have a vertical orientation and are in the circumferential direction of the container 3 evenly spaced apart to a complete and above the volume of the container 3 seen even movement and mixing of in the tank 3 effecting substrates. Depending on the requirements can also be a mode of operation of the rotors 2 be selected, with the optional one, two or all three rotors 2 be put into operation. Every rotor 2 can have its own drive, but it is also possible that all rotors 2 coupled or can be coupled with a common drive.

The 35 shows a stirrer 1 in side view in a horizontal container 3 , in a first version. The container 3 here has a cylindrical shape with a peripheral wall 31 and two ends 33 and is, for example, part of a so-called plug-flow fermenter. The agitator 1 here has a vertically arranged rotor 2 with a corresponding vertically extending rotor shaft 21 down in the tank 3 in a lower rotor bearing 22.1 and above in the area of a shaft passage 38 through the container wall 31 in a second rotor bearing 22.2 is rotatably mounted. A drive not shown here for the rotor 2 is on top of the container 3 to the there from the container 3 protruding rotor shaft 21 to dock. The rotor 2 here again has four blades 25 with her lower end 25.1 on four lower spokes 24.1 and with her upper end 25.2 on four upper spokes 24.2 are attached. The blades are running 25 again along helical lines, each describing a helix angle of 90 °. At the first, here lower rotor end 2.1 are the stirring blades 25 with in the radial direction of the rotor 2 aligned leaf surface, while the second, here upper rotor end 2.2 the stirring blades 25 with respect to the radial direction of the rotor 2 tilted orientation of the leaf surface are arranged. Thus, this rotor also has 2 the two in terms of their conveying effect on one in the container 3 located substrate different rotor sections 2 ' and 2 '' , As already described above, the rotor area 2 ' a predominantly axial conveying action, while the rotor area 2 '' has a stronger radial conveying effect. With the stirrer 1 So also in a horizontal hollow cylindrical container 3 good mixing and movement of a substrate can be produced with high efficiency.

36 shows one opposite the 35 modified embodiment with a stirrer 1 with two juxtaposed rotors 2 a lying container 3 in a perspective view, with cut open container 3 , An arrangement of several rotors 2 in a lying container 3 especially for very large containers 3 and / or for particularly high demands on the movement and mixing of the substrate in the container 3 be appropriate. The two rotors 2 of the agitator 1 are equal to each other, but with different orientation each vertically in the container 3 arranged. So lies in the in 36 left in the container 3 arranged rotor 2 its rotor area 2 ' with predominantly axial conveying action below, while this rotor area 2 ' at the right-hand rotor 2 is above. Accordingly, the left rotor 2 the rotor area 2 '' with the more radial conveying action above, while with the right rotor 2 this rotor area 2 '' is below. With this arrangement and orientation of the rotors 2 can be inside the container 3 here an intense, about the working areas of both rotors 2 extending flow and thorough mixing of the substrate can be ensured.

37 finally shows a stirrer 1 in side view in a horizontal container 3 , in another version. In this embodiment, the rotor 2 of the agitator 1 aligned horizontally, bringing the rotor shaft 21 here horizontally and parallel to the longitudinal central axis of the horizontal container 3 runs. The rotor shaft 21 is at her to the inside of the tank 3 pointing end in a first rotor bearing 23.1 rotatably mounted, which in a support 23 is arranged, in turn, down in the container 3 connected to this. The other end of the rotor shaft 21 is by means of a shaft bushing 38 in the in 37 left end wall 33 of the container 3 led to the outside, so that a not visible here drive of the rotor 2 outside the container 3 at the left end wall 33 can be arranged. In its further design and function corresponds to the rotor 2 in 37 the embodiment according to the 1 ,

During operation of the agitator 1 according to 37 promotes its rotor 2 with clockwise drive with the rotor area 2 ' Substrate substantially in the axial direction of the rotor 2 from right to left. The second rotor area 2 '' with the more radial conveying action, the substrate transports in the radial direction of the rotor 2 outwards towards the peripheral wall of the container 3 , This will be in the area near the peripheral wall 31 of the container 3 in the interior of which a helical substrate flow is produced, which is a flow component in the longitudinal direction of the container 3 from left to right. At the in 37 right front wall 33 of the container 3 the flow reverses and then runs in the central area of the container 3 in the longitudinal direction from right to left again in the area of the rotor 2 , It is also apparent here an intensive movement and mixing of substrate in the container 3 by means of the agitator 1 achieved.

LIST OF REFERENCE NUMBERS

1

 agitator

2

 rotor

2.1, 2.2

 rotor ends

2 '

 Rotor area with axial conveying effect

2 ''

 Rotor area with radial conveying action

2 '' '

 additional rotor area with axial conveying effect

20, 20 '

 Rotary axis, working direction

21

 rotor shaft

21.1, 21.2

 shaft stubs

22.1, 22.2

 rotor bearing

23

 support

24.1, 24.2

 end spokes

24.3

additional spokes (between 24.1 and 24.2 )

25

 stirring blades

25 '

 Rührblattsegmente

25.1, 25.2

Ends of 25

26

Flow guide on 2

27

He started 2

28

Drive for 2

3

 container

30

Substrate in 3

30 '

 axial flow

30 ''

 radial flow

31

 Container peripheral wall

32

 container bottom

33

 Container end walls

36

Flow guide on 31

38

 Shaft bushing

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202006004982 U1 [0002]
• EP 2656909 B1 [0003]

Claims (30)

Agitator ( 1 ) for mixing and moving in a container ( 3 ) substrates ( 30 ) in the form of liquids or liquid-solid mixtures, with at least one or more stirring blades ( 25 ), in the container ( 3 ) arranged in at least one rotor bearing ( 22.1 . 22.2 ) mounted rotor ( 2 ), which is about a rotation axis ( 20 ) is rotatable, and with a rotor ( 2 ) driving drive ( 28 ), characterized in that the rotor ( 2 ) along its axis of rotation ( 20 ) seen with at least two rotor areas ( 2 ' . 2 '' ) different conveying effect on the substrate ( 30 ), wherein a first rotor region ( 2 ' ) with a predominantly axial conveying action in the direction of the axis of rotation ( 20 ) and a second rotor area ( 2 '' ) with a stronger radial conveying action transversely to the direction of the axis of rotation ( 20 ) is executed. Agitator according to claim 1, characterized in that it is suitable for a standing, round or polygonal container ( 3 ) and that the at least one rotor ( 2 ) lying in the radial direction of the container ( 3 ) or a direction inclined thereto is arranged. Agitator according to claim 2, characterized in that the rotor ( 2 ) at one end ( 2.1 ) in a first, about a support ( 23 ) in the container ( 3 ) supporting container-side rotor bearing ( 22.1 ) and at its second end ( 2.2 ) in a second, on or in a container wall ( 31 ) or near a container wall ( 31 ) outside or inside of this wall-side rotor bearing ( 22.2 ) is stored or storable. Agitator according to claim 2 or 3, characterized in that during operation of the agitator ( 1 ) the substrate ( 30 ) of the rotor ( 2 ) with its axially inner, container-side rotor region ( 2 ' ) predominantly in the radial direction of the container ( 3 ) from the inside to the outside and with its axially outer, wall-side rotor region ( 2 '' ) from the rotor ( 2 ) radially away in the circumferential direction of the container ( 3 ) is eligible. Agitator according to one of claims 2 to 4, characterized in that the axis of rotation ( 20 ) of the rotor ( 2 ) in a horizontal direction or in one of the container wall ( 31 ) to the interior of the container at an angle of up to 30 ° obliquely downward or upward-facing direction. Agitator according to one of claims 2 to 5, characterized in that the axis of rotation ( 20 ) of the rotor ( 2 ) at an angle of up to 30 ° oblique to the radial direction of the container ( 3 ) runs. Agitator according to claim 1, characterized in that it is suitable for a standing, round or polygonal container ( 3 ) and that the at least one rotor ( 2 ) standing in the axial direction of the container ( 3 ) or an oblique direction and eccentrically or centrally in the container ( 3 ) is arranged. Agitator according to claim 7, characterized in that the rotor ( 2 ) at its one, upper end ( 2.1 ) in a first, above in or above the container arranged upper rotor bearing ( 22.1 ) and at its second, lower end ( 2.2 ) in a second bottom of the container ( 3 ) or on a container bottom ( 32 ) arranged lower rotor bearings ( 22.2 ) is stored or storable. Agitator according to claim 7 or 8, characterized in that during operation of the agitator ( 1 ) the substrate ( 30 ) of the rotor ( 2 ) with the axially upper rotor region ( 2 ' ) predominantly in the axial direction of the container ( 3 ) from top to bottom and with the axially lower rotor area ( 2 '' ) from the rotor ( 2 ) away in the radial direction of the container ( 3 ) is conveyed to the outside. Agitator according to claim 1, characterized in that it is suitable for a horizontal, round or polygonal container ( 3 ) and that the at least one rotor ( 2 ) in a parallel or transverse or oblique to the axial direction of the container ( 3 ) running direction in the container ( 3 ) is arranged. Agitator according to one of claims 1 to 10, characterized in that the rotor areas ( 2 ' . 2 '' ) of different conveying effect are carried out continuously merging into each other. Agitator according to one of claims 1 to 11, characterized in that the / each stirring blade ( 25 ) as a flatter, along a helical line over the full axial length of the rotor ( 2 ), of at least two spokes ( 24.1 . 24.2 ) of the rotor ( 2 ), continuous or segmented strips of material and that the / each stirring blade ( 25 ) seen in the stirring blade longitudinal direction from a rotor end ( 2.1 ) to the other end of the rotor ( 2.2 ) changing orientation of its blade surface relative to the radial direction of the rotor ( 2 ) having. Agitator according to claim 12, characterized in that the / each stirring blade ( 25 ) at one end of the rotor ( 2.1 ) one in the radial direction of the rotor ( 2 ) pointing orientation of its leaf surface and at the other end of the rotor ( 2.2 ) one to the radial direction of the rotor ( 2 ) has tilted alignment of its leaf surface. Agitator according to claim 12 or 13, characterized in that the helix, along the / each stirring blade ( 25 ), in the direction of the axis of rotation ( 20 ) of the rotor ( 2 ) seen a constant screw pitch. Agitator according to claim 12 or 13, characterized in that the helix along which the / each stirring blade ( 25 ), in the direction of the axis of rotation ( 20 ) of the rotor ( 2 ) has seen a changing screw pitch. Agitator according to claim 15, characterized in that the helix along which the / each stirring blade ( 25 ) runs, in a rotor area ( 2 ' . 2 '' ) a smaller pitch than in the other rotor area ( 2 '' . 2 ' ) having. Agitator according to one of claims 12 to 16, characterized in that the helix along which the / each stirring blade ( 25 ), a constant distance to the axis of rotation ( 20 ) of the rotor ( 2 ) having. Agitator according to one of claims 12 to 16, characterized in that the helix along which the / each stirring blade ( 25 ), extending in the direction of the axis of rotation ( 20 ) of the rotor ( 2 ) seen changing distance to the axis of rotation ( 20 ) of the rotor ( 2 ) having. Agitator according to claim 18, characterized in that the helix along which the / each stirring blade ( 25 ) runs, in a rotor area ( 2 ' . 2 '' ) a smaller distance to the axis of rotation ( 20 ) of the rotor ( 2 ) than in the other rotor area ( 2 '' . 2 ' ) having. Agitator according to one of claims 12 to 16, characterized in that the spokes ( 24.1 . 24.2 ) as conveying elements for the substrate ( 30 ) are formed such that in the first rotor region ( 2 ' ) arranged first spokes ( 24.1 ) with a predominantly axial conveying action in the direction of the axis of rotation ( 20 ) of the rotor ( 2 ) are executed and that in the second rotor region ( 2 '' ) arranged second spokes ( 24.2 ) with a predominantly radial conveying action transversely to the direction of the axis of rotation ( 20 ) of the rotor ( 2 ) or with a predominantly axial conveying action against the axial conveying action of the first spokes ( 24.1 ) are executed. Agitator according to one of claims 1 to 20, characterized in that the / each rotor ( 2 ) a continuous, end in each case a rotor bearing ( 22.1 . 22.2 ) mounted rotor shaft ( 21 ) or that the / each rotor ( 2 ) two end-face stumps ( 21.1 . 21.2 ), each in a rotor bearing ( 22.1 . 22.2 ) are stored. Agitator according to claim 3 or 8 or 10 , characterized in that on the container wall ( 31 ) in front of the wall-side rotor bearing ( 22.2 ) or at the bottom of the container ( 32 ) in front of the bottom rotor bearing ( 22.2 ) a fixed flow guide body ( 36 ) or that on the rotor ( 2 ) in front of the wall-side or the bottom-side rotor bearing ( 22.2 ) a co-rotating flow guide ( 26 ) is arranged. Agitator according to one of claims 12 to 22, characterized in that the spokes ( 24.1 . 24.2 ) straight in or bent to the radial direction of the rotor ( 2 ) are formed running. Agitator according to one of claims 12 to 23, characterized in that the rotor ( 2 ) a single stirring blade ( 25 ), that the stirring blade ( 25 ) extends over a helical angle of 360 ° or an integer multiple thereof and that the rotor ( 2 ) at least two the stirring blade ( 25 ) at least end-bearing supporting spokes ( 24.1 . 24.2 ) having. Agitator according to one of claims 12 to 23, characterized in that the rotor ( 2 ) a number of n stirring blades ( 25 ), where n> 1, that the stirring blades ( 25 ) evenly over the circumference of the rotor ( 2 ) are arranged so that each stirring blade ( 25 ) extends over a helical angle of 360 ° / n or an integer multiple thereof and that the rotor ( 2 ) per stirring blade ( 25 ) at least two the stirring blade ( 25 ) at least end-bearing supporting spokes ( 24.1 . 24.2 ) having. Agitator according to one of claims 1 to 25, characterized in that the rotor ( 2 ) axially behind the one with a predominantly radial conveying action transversely to the direction of the axis of rotation ( 20 ) of the rotor ( 2 ) executed second rotor region ( 2 '' ) additionally a third rotor area ( 2 ''' ) with one of the conveying action of the first rotor region ( 2 ' ) with the predominantly axial conveying action in the direction of the axis of rotation ( 20 ) of the rotor ( 2 ) has opposite predominantly axial conveying action. Agitator according to one of claims 1 to 26, characterized in that the rotor ( 2 ) with radially outward over the / each stirring blade ( 25 ) projecting, preferably with the stirring blade / the stirring blades ( 25 ) connected or integral, fingers ( 27 ) is provided. Agitator according to claim 27, characterized in that the radially outwardly beyond the / each stirring blade ( 25 ) protruding fingers ( 27 ) one against the working direction of rotation of the rotor ( 2 ) pointing oblique position to the radial direction of the rotor ( 2 ) exhibit. Agitator according to one of claims 1 to 28, characterized in that a plurality of rotors ( 2 ) in the circumferential direction of the container ( 3 ) or in the axial direction of the container ( 3 ) spaced apart in the container ( 3 ) are arranged. Container ( 3 ) for substrates to be mixed and agitated ( 30 ) in the form of liquids or liquid-solid mixtures, characterized by an agitator ( 1 ) according to one of claims 1 to 29.

Images