DE29906703U1 - Mixers for the production of suspensions - Google Patents

Description

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UNIBAUTECH

Grossenhainer Maschinenfabrik GmbH

Gustav-Schuberth-Str. 17

01558 Grossenhain

Mixer for the production of suspensions

The invention relates to a mixer for producing suspensions from at least one solid component and one liquid component, which has at least one filling device and a mixing tube which can be connected to it and has a filling and a discharge opening, in the housing of which there is an axially driven shaft and at least one shaft-connected, radially directed first element and which optionally has a liquid component connection in the area of the filling opening.

Such a mixer is known as a continuous mixer from the publication DE 296 06 280 Ul, in which a long mixing tube with a complicated rotating spiral is connected to the conveying and dosing device.

One problem with the long mixing tube is that the ratio of the length of the tube housing to its diameter requires a considerable amount of space and makes the continuous mixer difficult to operate. Due to the length of the tube housing, cleaning the inside is difficult.

Another problem occurs when there is increased exposure to sunlight, when systematic hardening of the suspension is possible, which then requires complex cleaning.

Furthermore, precise, lump-free mixing of, for example, reinforcing mortars, embedding and leveling compounds is not always satisfactorily guaranteed.

Another mixer is described in the publication G 87 03 301.1, in which the mixing tube is designed with a pre-mixing chamber and a plate-shaped rotor. The rotor divides the housing into a pre-mixing chamber and a main mixing chamber. The rotor itself carries axially arranged pins that are arranged parallel to each other at a close distance from the pins on the front cover that are also arranged axially.

One problem is that the components intended as filling material must be inserted radially into the housing, because the mixing tube is directly connected to the motor. Because the suction and pressure ports on the mixing tube

are installed, part of the premix chambers is provided with an additional chamber-reducing axial seal to the motor.

In the premixing chamber, which is thus reduced in size, it is also difficult for the components to mix, as the premixing chamber only serves to hold the components. As the rotor is a plate, the component mixture flows from the premixing chamber over the entire circumference of the rotor and from the outside into the main mixing chamber. The axially aligned cover pins and rotor pins, which are spaced apart from one another, create axial turbulence in the main mixing chamber.

Another problem is that the mixture has to be sucked out of the mixing tube. In addition, pressure and suction nozzles must be present on the mixing tube and pneumatic devices that can be connected to them must be used for a guided flow, which requires additional effort.

The well-known mixing tube can only be used to a limited extent for the production of suspensions.

The invention is based on the object of specifying a mixer for producing suspensions, the mixing tube of which is designed in such a way that the solid and liquid components can be mixed in it in a homogeneous, stable and lump-free manner. Furthermore, the mixing tube should be a universally connectable assembly that can be attached to suspension-producing and processing devices and equipment in a compatible manner, as well as being space-saving and easy to maintain.

The problem is solved by the features listed in claim 1. In the mixer for producing suspensions, according to the preamble of claim 1, the mixing tube contains at least one impact body which is arranged axially following and spaced apart from the shaft-connected first element and in the interior transverse to the longitudinal axis, whereby the rotating first element feeds the components to the impact body in such a way that a completely homogeneous mixing takes place.

The axial direction of passage is defined as the direction specified along the central longitudinal axis of the mixing tube housing, starting from the filling area of the components through the mixing tube to the discharge area of the homogeneous suspension.

Arranging the impact bodies transversely to the longitudinal axis means that the impact bodies are not only aligned exclusively perpendicular to the longitudinal axis of the mixing tube, but that the impact bodies can also be arranged at an angle to the vertical in relation to the longitudinal axis.

At least one shaft-connected second element can optionally be arranged downstream of one or more impact bodies in the mixing tube and spaced apart axially.

The filling device essentially consists of a conveyor device including a dosing device with a discharge opening for the subsequent mixing tube, a storage container and a drive with a drive shaft.

The pressure at the inlet of the liquid component connection and the speed of the conveyor screw of the filling device can be adjustable via electrotechnical/electronic and/or mechanically connected regulating and/or control devices, with which the volume of the solid component conveyed by the dosing device downstream of the conveyor device and the associated amount of the liquid component can be automatically metered into the mixing tube housing.

The storage container of the filling device can be designed in a funnel shape and its lower discharge opening opens into the conveyor device.

The mixer can preferably have a fixed support or a mobile frame to which the filling device can be attached depending on the design and requirements. The filling device and/or the mixing pipe can be parts of suspension processing systems, in particular feed pumps, machine combinations or the like.

The casing of the mixing tube housing can be divided into spatial sections perpendicular to its longitudinal axis by separate identification parts, whereby a premixing section with at least one shaft-connected first element, subsequently a swirling mixing section with at least one impact body and finally a discharge section optionally with at least one shaft-connected second element and the suspension discharge opening are present in the above-mentioned sequence, merging into one another.

The housing preferably has removable mounting elements that can be connected to corresponding mounting elements of a

conveying or dosing device to ensure a stable connection.

The driven shaft of the mixing tube, which can be inserted into the drive shaft, has a shaft section preferably provided with a driving pin, which tapers to a conically shaped end shaft part.

At least the sections mentioned can be designed as independent housing parts that can be assembled to form the housing, whereby the various housing parts with the essential, separate functional elements can be designed as a mixing tube set with interchangeable parts.

The housing parts of the associated sections each have corresponding fastening elements that are preferably detachable from the adjacent housing part.

The premixing section or the associated housing part can have, in addition to the filling opening, at least one connection on the rear wall side or at least one connection on the housing shell side for the liquid component.

Depending on requirements and the type of solid and liquid components, the swirling mixing section can be designed as a replaceable, precisely semantic part or as a housing part with a smaller cross-section that can be inserted into the interior of the continuous, uniform housing.

The swirling mixing section or the associated housing shell part can have impact bodies which are designed as equal length

Rods or as longer rods alternating with shorter rods are attached to the housing shell and are preferably arranged at least in a circular sequence surrounding the housing shell, whereby the individual impact bodies can be directed radially from the housing shell wall towards the driven shaft.

The impact bodies can be arranged transversely to the longitudinal axis in the interior as a perforated panel, slit panel or mesh grid.

The discharge section or the associated housing part is assigned at least one front cover and the suspension discharge opening designated as an identification part.

The suspension discharge opening can be located on the front cover or pointing downwards on the front housing shell area.

The shaft-connected first and/or second elements can each be designed as a ring of elements.

The first and/or second elements can be individually designed as wing elements and preferably in several parts.

The wing elements can each consist of at least one radially directed rod formed on the shaft, in particular welded thereto, and/or of a preferably plate-shaped wing blade.

The blades can be screwed along the associated rods in a radial and/or angle-adjustable manner to the longitudinal axis.

The free end areas of the blades facing the inner wall of the casing can be convexly curved and brought into close contact with the inner wall.

The housing, the shaft and the impact bodies are preferably made of metal. The blades of the vane elements are preferably made of wear-resistant polyurethane.

The invention is explained in more detail using an embodiment and several drawings.

Show it:

Fig. 1 is a schematic representation of a mixer according to the invention,

Fig. 2 is an enlarged side view of the mixing tube with a circular sequence of inward-facing impact bodies attached to its casing and with a liquid component connection on the top of the casing, largely as shown in Fig. 1,

Fig. 3 an enlarged front view of the mixing tube according to Fig. 2 without liquid component connection,

Fig. 4 is an enlarged sectional view along the line I-I in Fig. 3 with a driven shaft and shaft-connected, radially directed first and second elements and

Fig. 5 is an enlarged view of the mixing tube in rear view according to Fig. 4.

In Figures 1 to 5, the reference symbols are retained throughout for identical parts with identical functions.

Fig. 1 shows a mixer 1 for producing suspensions 22 from a solid component 16, e.g. dry mortar, and a liquid component 13, e.g. water, which has a filling device 3 and a mixing tube 2 which can be connected to it and has a filling opening 44 and a discharge opening 14, in the housing 5 of which there is an axially driven shaft 10 and at least one shaft-connected, radially directed first element 9, and which has a liquid component connection 15 in the area of the filling opening 44.

According to the invention, the mixing tube 2 contains an impact body 6, which is arranged axially following and spaced apart from the shaft-connected first element 9 and in the interior 17 transversely to the longitudinal axis 24, wherein the rotating first element 9 supplies the components 16, 13 to the impact body 6 in such a way that a completely homogeneous mixture can be present at least immediately behind the impact bodies 6.

The impact body 6 is designed to be independent of waves and represents a body that is held stationary in the interior space 17.

The mixing tube 2 described in this example has a holistic housing shell.

A shaft-connected second element 8 is arranged downstream of the impact body 6 in the mixing tube 2 and is spaced axially in the direction of passage.

The filling device 3 essentially contains a drive 20, a storage container 12 and a conveyor device 4 that transports the dry mortar 16, the mixing tube 2 having a connectable tubular housing 5 with an axially directed filling opening 44 together with a front cover 43, which preferably has a suspension discharge opening 14 on the front face, and together with a rear wall 45, furthermore the driven shaft 10 located in the housing 5, the shaft-connected first element 9 and the liquid component connection 15 for water 13 located in the area of the filling opening 44.

Preferably, the mixing tube 2 can be divided into spatial sections 4, 6, 7, 47 perpendicular to the longitudinal axis 24 by means of priority identification parts 9 and 6 and 14 present there.

Directed axially through, i.e. starting from the axial filling opening 44, there is a premixing section 46 with the shaft-connected first element 9, followed by a swirling mixing section 7 with several impact bodies 6 and finally a discharge section 47 with the discharge opening 14 and optionally with at least one shaft-connected second element 8, merging into one another in the sequence mentioned.

The conveyor device 4 with the associated conveyor screw 18 is usually assigned a metering device 23, which is also a component of the filling device 3. The mixing tube 2 is held in place on the metering device 23 in the direction of the longitudinal axis 24.

The drive, in particular the motor 20, the conveyor device 4, the metering device 23 and the mixing tube 2 preferably have the same longitudinal axis 24 along which the

Drive shaft 11 and the driven shaft 10 of the mixing tube 2 which can be inserted therein.

The storage container 12 can be designed in a funnel shape and its lower outlet opening opens into the conveyor device 4. The storage container 12 preferably has a protective grid 51 in the upper edge area.

The swirling mixing section 7 of the mixing tube 2 includes several impact bodies 6, as shown in Fig. 1, which are preferably arranged in a circular sequence of round rods, with the individual impact bodies mainly directed radially to the longitudinal axis 24. The impact bodies 6 can, however, be attached to the tubular casing of the housing 5 in a different configuration, in particular as a perforated diaphragm, slotted diaphragm or mesh grid, directed transversely to the longitudinal axis 24 in the interior 17. The mixture partially and premixed in the premixing section 46 should impact the impact bodies 6, bounce off, flow around the impact bodies 6 and be mainly swirled in the process.

After passing the impact bodies 6, the mixing process in the swirling mixing section 7 is essentially already completed, so that in the discharge section 47, if second elements 8 are present, only a suspension circulation takes place. Without the second elements 8, the front cover 43 or the suspension discharge opening 14 can be arranged immediately after the impact bodies 6, so that a minimized discharge section 47 can be identified.

In Fig. 1, the mixer 1 contains a fixed stand 19 on which the filling device 3 is attached. Instead of the fixed stand 19, a mobile frame can also be present. For example, directly below the front

A collecting container 21 for receiving and further processing the completely homogeneous suspension 22 is provided at the discharge opening 14.

The mixing tube 2 and the filling device 3 can occupy a central position or a position arranged in the processing area in other suspension-processing devices and systems. The mixing tube 2 according to the invention can thus also be designed as a compatible, connectable, interchangeable assembly universally for other systems. The collecting container 21 can therefore be coupled to a feed pump or a machine combination for further processing of the discharged suspension, for example.

In Fig. 2 and 3, the external fastenings of the impact bodies 6, which pass through the casing wall of the housing 5 and are fastened in a circular sequence, are shown. The rod-like impact bodies 6, which are provided with a threaded end, are each screwed to the outside of the casing 5 with fastening nuts 25 and are directed into the interior 17. Furthermore, a liquid component connection 4 9 for water 13 is provided on the top of the casing, because the mixing tube 2 can also be provided for direct housing attachment without a rear wall 45 to the metering device 23, which has the same casing cross-section.

On the outside of the housing 5 of the mixing tube 2, a detachable mounting element 26, 27 can preferably be located on both halves of the casing in order to bring about a stable connection of the mixing tube 2 to the metering device 23 with corresponding mounting elements (not shown), preferably on the metering device 23. The front cover 43 has the attached suspension discharge opening 14 and a

axially mounted bearing holder 28, the latter serving to guide the shaft bearing 39 extending the shaft 10. Preferably, a protective grid 50 is mounted inside the housing 5 in front of the suspension discharge opening 14 in order to e.g. hold back larger particles of the solid component 16 involved, so that any subsequent processing devices are protected from malfunctions.

The front cover 43 can be provided with fastening elements arranged centrally symmetrically on the outside of the housing (not shown), so that a loosening and an axial rotation with a new fastening of the front cover 43 can be carried out in order to be able to move the discharge opening 14 to a different angular range depending on the consistency of the suspension 22.

Fig. 4 and 5 are also explained in the same way. Fig. 4 shows the longitudinal section along the line I-I in Fig. 3. The sectional view shows the two impact bodies - the first impact bar 40 and the second impact bar 41 - of the all-round sequence 6.

The wing elements 8, 9 are preferably designed in several parts. The first wing element 8 consists of two opposing rods 33, 34 formed on the shaft 10, in particular welded on, and of an associated, preferably plate-shaped wing blade 37, 38, which are attached to the free ends of the rods 33, 34, preferably by means of screw connections. The second wing element 9 is designed in the same way. The free end areas of the wing blades 35, 36, 37, 38 are convexly curved towards the inner wall of the housing 5 and are brought into close contact with the inner wall.

The screw connections not only allow the necessary mounting, but also an adjustment of the blades 35,36, 37,38 along the associated rods 31,32,33,34. The blades 35,36,37,38 can also reach up to the driven shaft 10, so that the rods 31,32,33,34 can be dispensed with completely. Due to the proximity of the free end areas of the blades 35,36,37,38 to the inner wall of the housing 5, an intimate mixing of the components can take place up to the casing area.

The driven shaft 10 extends continuously in the premixing, swirling mixing and discharge sections 46, 7, 47. In the area in front of the filling opening 44, the shaft 10 has a preferably smaller diameter shaft section 29, which tapers to a conically shaped end shaft part 42. Since the drive shaft 11 in the output area of the metering device 23 is usually hollow and provided with a claw (not shown), the shaft section 29 can be inserted into the drive shaft 11 in a firmly coupling manner. The drive pin 30, which can be inserted into the claw and is mounted transversely to the shaft, creates the required holder.

The blades 35, 36, 37, 38 in the premixing section 46 and in the discharge section 47 can be directed parallel to the longitudinal axis 24. In Fig. 4, 5, the blades are rotated by an angle such that when the blade elements 8, 9 rotate, the mixture that completely fills the housing 5 is transported in a through-axial direction.

As shown in Fig. 4 as well as in Fig. 5 (rear view through the filling opening 44), the blades 35,36,37, 38 are each attached to the associated rods 31,32,33,34, rotated by an angle of approximately 45° to the longitudinal axis 24.

Preferably, the premixing section 46 is wider than the swirling mixing section 7 or the discharge section 47 in the order mentioned, because after the swirling mixing section 7 the total homogeneous mixing is already completed in such a way that due to the short discharge section 47 the length of the mixing tube 2 can therefore be significantly reduced.

In Fig. 5, the impact bodies 6 are attached to the casing of the housing 5 as longer round rods alternating with shorter round rods. The choice of the respective number and shape of the impact bodies 6 optimizes the mixing process.

A further advantage of the housing-mounted impact rods 40,41,6 is that they are easily replaceable both when changing solid and liquid components and when repairs are carried out.

Preferably, the pressure at the inlet of the liquid component connection 15,49 and the speed of the conveyor screw 4 in the filling device 3 can be adjusted via connected regulating and/or control devices. It is expedient that the volume of the suspension 22 to be re-treated or the solid component 16 that can be conveyed by the conveying or dosing device 4,23 and the associated amount of the liquid component 13 can be automatically metered into the mixing tube 2 via the respective connections 15,49.

The functioning of the mixing tube 2 in the mixer 1 according to the invention is described below:

A granular solid component 16, in particular dry mortar, plaster or dry concrete mix, is fed into the filling device 3 via the storage container 12 through the

Conveying device 4 and the dosing device 23 and conveyed into the premixing section 46 of the mixing pipe 2 . Due to the simultaneous entry of the liquid component 13, the water, into the premixing section 46, the first coarse premixing occurs due to the rotation of the first elements 9 in the direction of rotation 48. A mixture is created that still has dry nests. The rapid, remaining uniform moistening of the passed mixture takes place directly in the area of the swirling mixing section 7. When the mixture is fed into the discharge section 47, the mixture that is pushed forward is moistened so homogeneously to form a suspension 22 that after the discharge process the homogeneous suspension 22 is released, e.g. as mortar that can be processed immediately. Because the mixing process is completed immediately behind the swirling mixing section 7, the discharge section 47 can be reduced to the front cover 43 with the paraxially directed suspension discharge opening 14, whereby the mixing tube 2 can be further shortened.

The advantage of the arrangement of the passage-blocking impact bodies 6, in particular those attached to the casing shell, is that the number and design of the first elements 9 can be minimized for a homogeneous mixing of the components 16, 13. The minimization enables a significant shortening of the casing shell 5.

The housing 5, the shaft 10 and the impact bodies 6,40,41 are preferably made of metal. The multi-part wing elements 8,9 can contain plastic materials, in particular polyurethane plates, especially in their free end areas, the wing blades 35,36,37,38.

The invention opens up the possibility of improving the handling of the mixing tube 2 through the short tube housing and of achieving a suspension 22 with the highest quality standards. Firstly, this saves material and eliminates the need for the rotating spirals of known mixing tubes, which are complex to manufacture. As a result, the mixing tubes 2 according to the invention, which can also be used as assemblies, are easy to clean.

List of reference symbols
1 mixer

2 Mixing tube

3 Filling device

4 Conveyor system

5 Housing

6 impact bodies

7 Swirling mixing section

8 first element

9 second element

10 driven shaft
11 Drive shaft

12 Storage container

13 Liquid component

14 Discharge opening

15 Liquid component connection
16 Solid component

17 Interior

18 Conveyor screw

19 Fixed stands

20 Drive

21 Collection container
22 Suspension

23 Dosing device

24 Longitudinal axis

25 fastening nuts

26 first support element 27 second support element

28 Bearing

29 Wave section

30 driving pins

31 first bar 32 second bar

33 third staff

34 fourth staff

35 first wing blade

36 second wing blade 37 third wing blade

38 fourth wing blade

39 Shaft bearings

40 first impact bar

41 second impact bar 42 end shaft part

43 Front cover

44 Filling opening

45 Rear wall

46 Premixing section 47 Discharge section

48 Rotation direction

49 Liquid component connection

50 protective grilles

51 Grid

Claims (24)

-1- Protection claims 1. Mixer for producing suspensions from at least one solid component and one liquid component, comprising at least one filling device and a mixing tube which can be connected thereto and has a filling and a discharge opening, in the housing of which there is an axially driven shaft and at least one shaft-connected, radially directed first element and which optionally has a liquid component connection in the region of the filling opening,
characterized, that the mixing tube (2) contains at least one impact body (6; 40,41) which is arranged axially following and spaced apart from the shaft-connected first element (9) and in the interior (17) transversely to the longitudinal axis (24), wherein the rotating first element (9) supplies the components (16,13) to the impact body (6,-40,41) in such a way that a completely homogeneous mixing takes place. 2. Mixer according to claim 1,
characterized, that at least one shaft-connected second element (8) is optionally arranged downstream of the impact body (6; 40, 41) in the mixing tube (2) and spaced apart in an axially directed manner. 3. Mixer according to claim 1 or 2,
characterized, that the filling device (3) essentially consists of a storage container (12), a drive (20) with a drive shaft (11) and a drive shaft-supported conveyor device (4) including a metering device (23) with a discharge opening for the subsequent mixing tube (2). 4. Mixer according to at least one of the preceding claims, characterized, that the pressure at the inlet of the liquid component connection (13,49) and the speed of the conveyor screw (18) can be adjusted via electrotechnically/electronically and/or mechanically connected regulating and/or control devices with which the volume of the solid component (16) conveyed by the metering device (23) downstream of the conveyor device (4) and the associated amount of the liquid component (13) can be automatically metered into the mixing tube (2). 5. Mixer according to at least one of the preceding claims, characterized, that the storage container (12) is approximately funnel-shaped and its lower discharge opening opens into the conveyor device (4). 6. Mixer according to at least one of the preceding claims, characterized, that the filling device (3) is preferably attached to a fixed stand (19) or to a mobile frame. 7. Mixer according to at least one of the preceding claims, characterized, that the casing of the housing (5) is divided perpendicular to its longitudinal axis (24) by primary identification parts (9;6;14) into spatial sections or housing parts assigned to the sections and detachably connected to one another, with a premixing section (4 6) with at least one shaft-connected first element (9) directed axially through, followed by a swirling mixing section (7) with at least one impact body (6) and finally a discharge section (47) with the suspension discharge opening (14) and optionally with the shaft-connected second element (8) are present in the said sequence, merging into one another. 8. Mixer according to at least one of the preceding claims, characterized, that preferably detachable mounting elements (26, 27) are located on the housing (5) or on the housing part of the mixing tube (2) associated with the premixing section (4 6), which can be connected to corresponding mounting elements of the -4 - Provide a stable connection for the conveying or dosing device (4,23). 9. Mixer according to at least one of the preceding claims, characterized, that the housing parts assigned to the sections (46,7,47) can optionally be assembled independently to form a housing (5), whereby the various housing parts with the essential separate identification parts (9,6,14) including the shaft (10) are designed as a parts-exchangeable, parts-replaceable mixing tube set. 10. Mixer according to at least one of the preceding claims, characterized, that the housing parts relating to the sections (46,7,47) each have corresponding fastening elements that can be released from the adjacent housing part (46,7;7,47). 11. Mixer according to at least one of the preceding claims, that the premixing section (46) or the associated housing part has, in addition to a filling opening (44), at least one rear wall-side or at least one housing shell-side connection (49) for the liquid component (13). 12. Mixer according to at least one of the preceding claims, characterized, that the swirling mixing section (7) of the mixing tube (2) depending on requirements and the type of solid and liquid components (16,13) is designed as a housing part of smaller cross-section that can be inserted into the interior (17) of the uniform housing (5). 13. Mixer according to at least one of the preceding claims, characterized, that the swirling mixing section (7) or the associated housing part has impact bodies (6) which are attached in a radially directed manner as rods of equal length or as longer rods alternating with shorter rods and are preferably arranged at least in a circular sequence related to the housing shell, the individual impact bodies (6; 40, 41) being directed radially from the housing shell wall to the longitudinal axis (24). 14. Mixer according to at least one of the preceding claims, characterized, that the impact bodies are arranged transversely to the longitudinal axis (24) in the interior (17) in the form of a perforated diaphragm, slit diaphragm or mesh grid. 15. Mixer according to at least one of the preceding claims, characterized, that at least one front cover (43) and the suspension discharge opening (14) are assigned to the discharge section (47) or the associated housing part. 16. Mixer according to at least one of the preceding claims, characterized, that the suspension discharge opening (47) is located on the front side of the front cover (43) or facing downwards on the casing of the housing (5). 17. Mixer according to at least one of the preceding claims, characterized, that the shaft-connected first and/or second elements (8,9) are each designed as an element ring. 18. Mixer according to at least one of the preceding claims, characterized, that the first and/or second elements (8,9) are designed as wing elements and preferably in several parts. 19. Mixer according to at least one of the preceding claims, characterized, that the wing elements (8,9) each consist of at least one radially directed rod (33,34/31,32) formed, in particular welded, on the shaft (10) and/or of a preferably plate-shaped wing blade (37,38/35,36). 20. Mixer according to at least one of the preceding claims,
characterized, that the blades (35,36,37,38) are screwed along the associated rods (31,32,33,34) in a radially and angularly adjustable manner to the longitudinal axis (24). 21. Mixer according to at least one of the preceding claims, characterized, that the free end regions of the blades (35,36,37,38) directed towards the inner wall of the casing of the housing (5) are convexly curved and are brought close to the inner wall. 22. Mixer according to at least one of the preceding claims, characterized, that the driven shaft (10), which can be inserted into the drive shaft (11), has a shaft section (29) preferably provided with a driving pin (30) which extends to a conically shaped end shaft part (42) rejuvenated. 23. Mixer according to at least one of the preceding claims, characterized, that the housing (5), the shaft (10) and the impact bodies (6,-40,41) are preferably made of metal and the blades (35,36,37,38) of the wing elements (8,9) are preferably made of polyurethane. 24. Mixer according to at least one of the preceding claims, characterized, that the filling device (3) and/or the mixing pipe (2) are parts of suspension processing systems, in particular of feed pumps, machine combinations or the like. Two sheets of drawings