State of the art
The invention relates to a stirring device according to the preamble of
Claim 1.
From the prior art stirrers with a hub and with welded to the hub support struts, to each of which a stirring blade is attached, is known. The hub is fastened to a drive shaft of a stirrer. Further, stirring elements are known, in which stirring blades welded directly to a hub.

The object of the invention is in particular to provide a generic stirring device having improved properties with regard to construction. The object is solved by the features of claims 1, 2 and 15, while advantageous embodiments and developments of the invention can be taken from the subclaims.

Advantages of the Invention

The invention is based on a stirrer with at least one

Carrier unit having at least one connection element for in particular releasable connection to a drive shaft and at least one beam member for securing at least a stirring blade.

It is suggested that the rail element and the connecting element are integrally connected with each other.

Alternatively or additionally advantageously it is proposed that the beam member comprises at least a portion with an at least substantially rectangular, advantageously at least substantially rectangular cross-section.

The inventive design an advantageous construction can be achieved. It can also be easily provided to manufacture a stirring device cost and / or. Furthermore, a stirring device may be provided, which can be cut from a sheet, a strength can be increased in particular a reduced number of necessary welding operations and / or. In particular, a hub, and struts can be manufactured of a stirring device from a common workpiece, wherein the stirring device is advantageously formed seamlessly. In addition, a high degree of flexibility can be achieved in terms of a connection of a stirring blade.

In particular, a stirring blade in a simple way, to a support beam

be connected. Advantageously, it can be almost completely dispense with a processing milled in a production at least. Furthermore, a rail can with an advantageous geometry, in particular with regard to a simple manufacture and / or flexible and / or simple connection of a

Stirrer blade are provided.

Under a "stirring" is intended in particular to a particular

functioning, component, in particular a construction and / or

Functional component, a stirring apparatus such as a mixer and / or an agitator, particularly for a fluid, in particular with a maximum speed of 500 rpm, preferably 200 rpm, particularly advantageously of 100 rpm, preferably 50 rpm, are understood. In particular, the

Stirring device include the entire agitator. It is advantageous to

Stirrer a component of a stirring member or formed as a stirring element. Particularly advantageously, the stirring device is intended to be rotated an axis of rotation, in particular with a stirring.

Preferably, the stirring means is point-symmetrically, in particular with respect to a center point of the connection element is formed. particularly preferred

extends in an assembled state of the stirring device, the rotational axis of the stirrer through the center of the connecting element. Advantageously, the rotation axis extends in an assembled state parallel to an

Vertical direction, in particular in a normal operating state of the stirring device, the vertical direction is preferably perpendicular to a substrate.

Preferably, the carrier unit is formed integrally. Particularly preferably, the carrier unit is in particular formed entirely of a metal, for example steel and / or stainless steel and / or alloy and / or any other metal such as aluminum and / or titanium, at least to a large extent and. It is also conceivable that the stirring unit is made at least in large part from a plastic. It is also conceivable that the stirring unit has a, in particular additional, at least partially coating, for example with a metal oxide and / or an, in particular corrosion-resistant, polymer, and / or is formed gummed. By the term "at least to a large extent" is intended to mean at least 95% in particular at least 55%, advantageously at least 65%, preferably at least 75%, more preferably at least 85%, and particularly advantageous. Preferably, forming the connecting element or all connecting elements of the carrier unit and the rail element or all elements of the rail carrier unit, the support unit.

Advantageously, the connecting element forms a part, in particular an upper part of a hub. Particularly advantageously, the connection element is at least in large part, in particular completely, made of a metal, for example steel and / or stainless steel, and / or from the same material as the

Support unit is formed. It is conceivable that the carrier unit has a plurality of advantageous superimposed connection elements, in particular with it respective cross sections which together form the hub.

the beam member is advantageously formed at least in large part, in particular entirely of a metal, for example steel and / or stainless steel, and / or from the same material as the support unit. In particular, the beam member is elongated. Preferably, the beam member is straight. Particularly advantageously, the beam member is rod-like

educated. In particular, the beam member, in particular a longitudinal direction of the rail element extends, starting from a center of the

Connection element, in particular just in a radial direction of the

Stirrer. Preferably, the beam member extending in a plane, in particular in a plane perpendicular to the axis of rotation. More specifically, the beam member on a longitudinal extension corresponding to at least 5%, advantageously at least 10%, especially advantageously at least 20% and preferably at least 30% of a maximum extension, in particular a diameter of the stirring device. It is also conceivable that the beam member is curved, wherein the beam member of the in-plane and / or

Plane may be curved out. Advantageously, the spar member at least one connecting region for the stirring blade, whereby the

is particularly advantageous connection area provided for a welding and / or screwing and / or riveting and / or a one-piece connection and / or other connection to the stirring blade. Preferably, the beam member forms a spar, to which a stirring blade connectable

is respectively connected. In particular, the stringer corresponds to the

Holm element. It is also conceivable that the carrier unit has a plurality of advantageous superposed spar elements, in particular to the corresponding cross-sections which jointly form a beam. The support unit may include a plurality of rails, the

are formed in particular in each of several, preferably arranged one above another beam members. "Provided" is especially meant to be specifically designed and / or fitted. Among them, that an object is provided to a specific function, intended in particular

be understood that the object satisfies this particular function in at least one application and / or operating conditions and / or execute.

"Integral" is to be understood formed in particular in one piece below. Preferably, this one piece of a single workpiece and / or a single blank and / or mass and / or a casting, or an injection molding method, in particular an entry and / or

Multi-component injection molding process produced. For example, it is conceivable that the carrier unit is adapted be manufactured as a single forging. It is also conceivable that the carrier unit is designed as a cast part.

By "at least substantially square / rectangular cross-section" of an object is intended to be understood in particular in that along at least 60%, advantageously at least 70%, especially advantageously at least 80% and preferably at least 90% of all cross-sections of the object at least one direction, an area of ​​a differential area of ​​the cross section and a smallest cross-section surrounding, advantageously non-through depressed square / rectangle of 30%, advantageously at most 20%, particularly advantageously more than 10%, preferably at most 5% and particularly advantageously at most 3% of the surface area of ​​the quadrangle / is the rectangle.

Preferably, the portion is formed cuboid-like. More preferably, the portion comprises at least a major part of the spar element and

in particular, the whole beam member. the beam member is advantageously rectangular. "rectangular" should in principle also include geometric shapes that correspond to rectangles is rounded and / or beveled corners. Especially advantageously, the beam member is formed cuboid-like manner, in particular also rounded and / or bevelled edges are also conceivable. A rounding or a corresponding chamfer can especially be reduced a notch effect.

The beam member may also have a cross-section of a

Rectangle is different. In particular, the cross section may be one from a

be rectangular different quadrilateral such as a parallelogram having internal angles different from 90 ° or a trapezoid or any advantageous over non-proposed quadrilateral.

In an advantageous embodiment of the invention it is proposed that the spar element and the connecting element in a common

Connecting portion especially in a viewing perpendicular to the

Having an axis of rotation at least substantially identical material thickness. In particular, in the connecting region corresponds to a material thickness of the spar member a material thickness of the connection member. Advantageously, the beam member and the connecting element have an at least substantially identical in the connection region along the rotational axis

Extension to. Advantageously, the connecting element flows seamlessly into the

Holm element over. Particularly advantageously, the connecting element, in particular in a viewing perpendicular to the axis of rotation, an at least substantially constant material thickness. Preferably, the material thickness of the connection member a material thickness of the portion of the spar member having an at least substantially square cross section corresponds. By "at least substantially" is to be understood in this context, that a deviation from a

predetermined value, in particular less than 15%, preferably less than 10% and more preferably corresponding to less than 5% of the predetermined value. This can provided a simple to produce geometry. Furthermore, this may have a high load capacity, in particular a connection between a hub and a rail can be obtained.

In a particularly advantageous embodiment of the invention it is proposed that the connecting element and the beam member from a common plate-like workpiece, especially a metal sheet or plate, preferably a metal sheet or a metal plate are made. The plate-like workpiece has in particular the same material as that of the carrier unit and can for example also at least partially, in particular completely, be formed of a plastic or a composite material. the entire carrier unit from the plate-like workpiece is advantageously made. Particularly advantageous are the spar member and the connecting element, preferably designed the entire carrier unit or at least a corresponding blank as a common flat part, for example as a section flat part or a stamped flat part. This can achieve a cost-advantageous manufacturability. Furthermore, this flexibility can respect

Applicable production methods and / or useful materials can be obtained.

In a further embodiment of the invention it is proposed that the connecting element forms at least one Anbindungsflansch, which is provided for in particular releasable connection to a shaft flange, in particular a shaft flange of the drive shaft. An advantage of the

provided Anbindungsflansch to be bolted to a shaft flange. Advantageously, the connection element has a particular

cylindrical recess, which surrounds the Anbindungsflansch advantageous. Particularly advantageously extends in an assembled state, the

Axis of rotation by the recess. This allows advantageous

Properties are achieved in terms of mountability and / or ease of maintenance and / or a possibility of a flexible conversion.

It is conceivable that a connection between the connecting element and the drive shaft, at least a power screw and / or at least one

includes key connection. It is also conceivable that the connecting element is provided, by means of at least one clamping connection with the

to be connected to the drive shaft. Alternatively or additionally it is conceivable that the connecting element is adhered to the drive shaft. Furthermore,

of course, more suitable to a person skilled appearing

Connection variants are possible.

In a preferred embodiment of the invention it is proposed that the spar element has in at least one direction has a tapered cross-section. In particular, the cross section of the spar member tapers in an advantageous radial direction away from the connecting element.

Advantageously, the beam member, at least a first portion having a constant, in particular at least substantially rectangular cross-section, which is adjacent to the connecting element particularly advantageous. Particularly advantageously, the spar member at least one second section having an, in particular at least substantially rectangular, tapering cross-section. It is conceivable that the first portion and the second portion adjacent to each other. Preferably, the beam member, at least a third section with a preferably at least substantially rectangular constant cross-section which is smaller than a cross section of the first

Section. It is conceivable that the second section and the third section adjoin one another. This can advantageously adapted a geometry of a load. In particular, this can be a flexible to a

corresponding request adaptable geometry are provided.

Furthermore, it is proposed that the beam member is formed at least partially twisted, for example by an angle of at least 5 ° or at least 10 ° or at least 15 ° or at least 20 ° or at least 30 ° or at least 45 degrees or at least 60 ° or of at least 75 ° or at a greater angle. In particular, the

Beam member at least partially twisted in themselves. Advantageously, the beam member, at least a first portion which with respect to the

oriented connection element straight. Particularly advantageously, the spar member at least one second portion which with respect to the

is arranged connection element tilted. Preferably, the second, tilted portion is provided to a mounting of the stirring blade, so that it is aligned advantageously employed by stirring with respect to a stirring direction. Particularly preferred is a said spar member oppositely disposed another beam member of the support unit in an opposite direction, twisted in particular by the same angle is formed. Preferably, the beam is by cutting / punching out the plate-like

formed work piece and a subsequent twisting to produce. In this way can be adapted in a simple and / or inexpensive and / or variable manner, advantageously an angle of attack of a stirring blade.

Furthermore, it is suggested that the stirring device comprises at least one stirring blade connected to the beam member. Particularly preferably, the support unit comprises at least one, in particular the spar element

oppositely disposed, second beam member. Advantageously, the stirring device comprises at least one fixed to the second beam member further stirring blade. Preferably, the stirring means per beam member advantageously comprises exactly one, at least, one end fixed to the corresponding beam member stirring blade. Particularly preferably, the support unit comprises exactly two beam members and the stirring device exactly two stirring blades, which are advantageously attached to each one of the beam members. It is conceivable that the stirring device comprises a plurality of, in particular stacked carrier units. can thereby stirring blades, a stirring device with a total number of N advantageous a number of N / 2 carrier units comprise each with two agitating blades which are especially advantageously arranged at equal angles to each other, for example at angles of 720 ° / N, where the stirring blades in particular in this case, are preferably arranged in a viewing parallel to the axis of rotation on a circle at regular intervals. Particularly in the case of a stack of a plurality of carrier units lower carrier units are designed such that they are in a central region, in particular in a region of their respective connecting element, fixed to a arranged above each support unit and / or to the drive shaft and / or fastened. It is also conceivable that the support unit includes three or four or five or six or more beam members, and advantageously a corresponding number of stirring blades. This allows a simple to produce geometry

to be provided. Further properties can thus be adapted to a demand for a stirring.

In an advantageous embodiment of the invention it is proposed that the agitator blade along a longitudinal side of the spar member is connected thereto. Specifically, the stirring blade is along the front long side with the

Holm element connected. The stirring element can to the beam member

be welded and / or screwed and / or glued and / or in another way connected with it. Preferably, the stirring blade has at least one, in particular L-shaped outer contour, in the region of which it is connected to the beam member. It is particularly conceivable that the

Outer contour L-like manner, said legs of the imaginary "L" a different from 90 ° angle including, for example, one, in particular considerably smaller angle such as 75 ° or 60 ° or 45 ° or,

in particular considerably greater angle such as 105 ° or 120 ° or 150 °. Particularly advantageously, a longer portion of the outer contour extends at least substantially parallel to a main extension direction of the spar member. In particular is the longer section of the outer contour, preferably over its entire length, at the longitudinal side of the spar member to. By "at least substantially parallel" is used herein in particular a

Aligning a direction relative to a reference direction, in particular in a plane, to be understood, the direction opposite to the reference direction is deviated in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °. under a

"Main extension direction" of an object is, in particular, a direction to be understood, which is parallel to a longest edge of the smallest imaginary parallelepiped which the object just completely encloses. This can advantageously be a high load capacity of a

Rührblattanbindung be achieved.

In a particularly advantageous embodiment of the invention it is proposed that a leading edge of the stirring blade at least partially flush with

terminating at least one edge of the spar member. Preferably, the leading edge extending from an end face of the pillar member in an opposite direction of the connecting element and, in particular parallel to a main extension direction of the spar member. Particularly preferably, the front edge of the stirring blade forms an extension of the edge of the spar member. the leading edge is advantageously provided to be arranged at a stirring in the stirring direction forward. This can achieve advantageously a discount amount of stirring.

In a preferred embodiment of the invention it is proposed that the stirring blade and the beam member are connected together at one end side of the spar member. Specifically, the stirring blade is located with a shorter portion of the particular L-shaped outer contour, preferably over its entire length, on the front side of the spar member to. Preferably, the agitator blade along the outer contour is connected to the beam member. More preferably, the stirring blade, along its outer contour is welded to the beam member, in particular along the entire length of the outer contour. This can achieve advantageously a high flexural stiffness of a Rührblattanbindung.

Alternatively or additionally it is proposed that the spar element and the stirring blade are integrally connected with each other. In particular, the

Spar member and the agitating blade made of a common, preferably plate-shaped workpiece, wherein the stirring blade is advantageously formed bent relative to the beam member out of a plane. Advantageously, a material thickness of the stirring blade corresponds at least substantially a material thickness of the spar member. It is conceivable that the carrier unit above and / or below the pillar member having advantageously plate-like and / or flat reinforcing elements in particular parallel to a

are the main extension direction of the spar member arranged and / or connected thereto. It is also conceivable that the entire stirring device is made of a single plate-like workpiece, for which in particular the connecting element, the beam member and the stirring blade or

are cut out all the beam members and all stirring blades of the stirring device or punched. This can achieve advantageous easy and / or rapid and / or cost-effective manufacturability.

In addition, it is proposed that at least a part of the carrier unit, in particular the entire carrier unit is formed by a layer structure with at least two sheets. For example, multiple sheets

be arranged one above the other and in particular connected to one another and in particular form the entire carrier unit. For example, the carrier unit may comprise a central plate, which forms the spar member and the connecting element. Further, the carrier unit may be an at least

Reinforcing sheet include that reinforces the central sheet, preferably of in a region of the connection element and / or in an area

Holm element and in particular rests flat on the central plate and / or is arranged above and / or below this. Basically, several

Central sheets and / or more reinforcement plates imaginable. So is

for example, conceivable that the carrier unit is constructed in the manner of a plywood board composed of a plurality of parallel plates. Occurring edges can thereby be rounded or chamfered. Furthermore oblique

Surfaces of a plurality of inclined superposed sheets with

be formed, in particular chamfered edges. It can hereby be achieved in terms of construction advantageously high flexibility. Further, simple and / or inexpensive production processes can thereby be used to produce a stirring device.

Advantageous properties with respect to a particular construction and an inexpensive manufacture can be achieved with a stirrer with at least one stirring device according to the invention.

Furthermore, the invention relates to a process for preparing a

Stirrer, with at least one carrier unit, the at least one

Connection element has for connection to a drive shaft and at least one beam member for securing at least a stirring blade.

It is proposed that the connecting element and the beam member are produced from a common plate-like workpiece.

Through an inventive method advantageous properties can be achieved in terms of production engineering favorable production. It can also be easily provided to manufacture a stirring device cost and / or. Furthermore, a stirring device may be provided, which can be cut from a sheet, a strength can be increased in particular a reduced number of necessary welding operations and / or. In particular, a hub, and struts can be manufactured of a stirring device from a common workpiece, wherein the stirring device is advantageously formed seamlessly. In addition, a high degree of flexibility can be achieved in terms of a connection of a stirring blade. In particular, a stirring blade can be connected in a simple manner to a supporting beam. Advantageously, it can be almost completely dispense with a processing milled in a production at least. Furthermore, a rail may be provided with an advantageous geometry, in particular with regard to a simple manufacture and / or flexible and / or simple connection of a stirring blade.

Preferably, the entire carrier unit from the plate-like workpiece is made. a carrier unit blank is particularly preferably cut punched out from the plate-like workpiece and subsequently machined or advantageously by chamfered, for example, edges and / or rounded. Further, the recess is for example cut or punched in the area of ​​Anbindungsflanschs of the connection element. Advantageously, a cutting out takes place by means of a burn-out, whereby in particular a need for edge processing, and / or

Need for milling of at least partially and advantageously completely eliminated. any stirring blades of the stirring device are welded to the corresponding beam members advantageously subsequently. It is also conceivable that at least one central sheet metal is cut out or punched out, comprising a blank for the connecting element, the beam member and the stirring blade, and more particularly for the entire carrier unit as well as all

makes stirring blades. the central plate is advantageously bent in certain areas to form the stirring blades. It is conceivable that then cut reinforcement plates and / or punched and with the

Central plate and / or are interconnected.

In particular, the inventive method can include special process steps, in each of which generates at least one of the above described features of the stirring device according to the invention and / or the stirring device according to the invention and / or added and / or implemented,

in particular, by a suitable production method.

The stirring device according to the invention or the inventive method are not here to the applications described above, and

Embodiments be limited. In particular, the stirring device according to the invention or the inventive method can be described to a fulfillment of an operation of a herein mentioned herein from a number of individual elements and / or components and / or

include units and / or process steps different number.

In addition, at the stated in this disclosure ranges of values ​​underlying values ​​are as disclosed and are considered to be suitable for various applications within the specified limits.

drawings

Further advantages result from the following description of the drawing. In the drawings, five embodiments of the invention are shown. The

Drawings, the description and the claims contain numerous features in combination. The expert will consider the features expediently also individually and combine them into additional, meaningful combinations.

Show it:

Fig. 1 shows a stirrer with a stirring device in a first

schematic representation,

Fig. 2 is a top of the first stirring device in a

perspective view;

Fig. 3 shows an underside of the first stirring device in a

perspective view;

Fig. 4, the first stirring device in a schematic plan view, FIG. 5, the first stirring device in a schematic front view, Fig. 6, the first stirring device in a schematic side view, FIG. 7 is a top side of a second stirring device in a

perspective view;

Fig. 8 is a bottom of the second stirring device in a

perspective view;

Fig. 9, a third stirring device in a perspective representation, Fig. 10, a fourth stirring device in a perspective view, Fig. 1 1, the fourth stirring device in a schematic front view, Fig. 12 is a top side of a fifth stirring device in a

perspective view;

Fig. 13 is a bottom of the stirring device in a fifth

perspective view;

Fig. 14, the fifth stirring device in a schematic front view, Fig. 15, the fifth stirring device in a schematic side view and

Fig. 1 6 is a schematic flow diagram of a method for

Preparation of a stirring device.

Description of Embodiments

Fig. 1 shows a mixer 44a with a first stirrer 10a in a schematic representation. The first stirrer 10a is formed in the present case as a stirring element. The first stirrer 10a is at a

Drive shaft 1, 6a of the stirring device 44a attached. The first stirrer 10a is fixed to a shaft flange 28a of the drive shaft 1, 6a. The first

Stirring device 10a 46a is formed rotatable about a rotation axis.

In particular, the agitator 10a is provided to rotate at a stirring about the rotation axis 46a. The rotation axis 46a extends through a center 48a of the first agitator 10a. The rotation axis 46a is parallel to a longitudinal direction of the drive shaft 1, 6a.

2 shows a top surface of the stirrer 10a in a perspective view. 3 shows a bottom of the first stirring device 10a in a perspective view. Figures 4 to 6 show various additional schematic representations of the first stirring device 10a. The first agitator 10a has a support unit 12a. The support unit 12a includes a connecting member 14a for connecting to the drive shaft 1, 6a. Further, the carrier unit 12 includes a beam member 18a for fastening at least a stirring blade 20a. The beam member 18a forms a spar made for the stirring blade 20a. The beam member 18a and the connecting element 14a are integrally connected to each other. In the present case, the support unit 12a is formed in one piece. Further, the carrier unit is formed of stainless steel 12a. But it is conceivable, other materials and / or combinations of materials.

The beam member 18a has a portion 22a with an at least

Substantially square cross-section. In the present case, the

Portion 22a has a rectangular cross section. Further, in the present case the whole beam member 18a has a substantially quadrangular, in particular rectangular cross section. At least in sections, the edges of the pillar member 18a are chamfered.

In the present case, the support unit 12a includes a further stringer element 50a. The further beam member 50a is formed into the beam member 18a point-symmetrically with respect to the center 48a of the stirrer 10a. The first agitator 10a has the stirring blade 20a. The stirring blade 20a is fixed to the beam member 18a. Further, in the present case the first

Stirring device 10a further stirring blade 52a. The further stirring blade 52a is fixed to the other beam member 50a. The further stirring blade 52a is formed with respect to center 48a of the first stirring device 10a point-symmetrically to the stirring blade 20a. The spar element 1 8a more

Beam member 50a and the connecting element 14a together form the

Support unit 12a. The support unit 12a, the paddle blade 20a and the stirring blade 52a together form another of the stirring device 10a.

The first agitator 10a has in the present case to a longitudinal extent of about 4 m. The longitudinal extent 10a corresponds to a diameter of the stirring device. But there are other dimensions of

Stirrer conceivable, in particular also other conditions of a length, a width and a height. For example, a longitudinal extension of a stirrer 0.1 m or 0.5 m, or 1 m or 2 m or 3 m or 5 m or 6 m or even more. Further, in the present case 18a has the beam member to a longitudinal extension of about 1 m. But there are also other

Longitudinal extents of a pillar member conceivable, in particular in a similar aspect ratio relative to the longitudinal extension of the stirrer 10a as in this case, or in a different aspect ratio.

The connecting element 14a and the beam member 18a are made of a

common plate-type workpiece made. In this case, the common workpiece is a stainless steel plate. Of course, other suitable materials are conceivable. A thickness of the workpiece is also in this case about 7 cm. but there are also other thicknesses conceivable, such as for example, 0.1 cm or 1 cm or 2 cm or 4 cm, or 6 cm, or 8 cm or 10 cm or 15 cm or more or less arbitrarily, or between the

values ​​specified thicknesses lying. In the present case the further beam member 50a is also made of the common plate-like workpiece. The carrier unit 12 is made of the common plate-like workpiece, in particular cut or punched out.

The beam member 18a and the connecting element 14a have an at least substantially identical thickness of material in a common connecting portion 24a. The material thickness is about 7 cm in the present case. The material thickness which corresponds at least substantially to a thickness of the common plate-like workpiece. The connecting element 14a passes into the connection region 24a in the beam member 18a. Further, the connecting element 14a and the beam member 18a have an at least substantially identical width in the connecting portion 24a. In addition, the connecting element 14a and the beam member 18a have an at least substantially identical cross-section in the connecting portion 24a.

The connection member 14a forms a Anbindungsflansch 26a, which is provided for connection to the shaft flange 28a. In a mounted

State of Anbindungsflansch 26a is screwed with the shaft flange 28a.

The beam member 18a has in at least one direction to a 54a

tapering cross-section. In the present case, the direction 54a of a radial direction with respect to the axis of rotation corresponds 46a. Further, the beam member 18a has in the present case a first section 56a having a constant rectangular cross section and an adjacent second portion 58 having a tapered rectangular cross section.

The stirring blade 20a along a long side 30a of the pillar member 18a connected thereto. The stirring blade 20 is welded to the beam member 18a. but there are possible other types of connections, as described above. The stirring blade 20 has a L-shaped outer contour 60a, which with the

Beam member 18a is connected. The L-shaped outer contour 60a is connected to a

adapted to the outer contour of the pillar member 18a. A long leg portion 60a of the outer contour bears against the longitudinal side 30a of the pillar member 18a.

The stirring blade 20a and the beam member 18a are connected to each other at one end face 36a of the pillar member 18a. In this case the stirring blade is welded to the end face 36a of the pillar member 18a 20a. a short

Leg portion 60a of the outer contour of the stirring blade 20a abuts the end face 36a of the pillar member 18a. Alternatively or additionally it is conceivable that a beam member in particular forms a slot at an end side in which at least a portion of the stirring blade is inserted. The stirring blade can then be clamped to the rail element and / or welded.

A front edge 32a of the stirring blade 20a includes at least sectionally flush with an edge 34a of the pillar member 18a. The edge 34a is a front edge of the pillar member 18a. In the present case, the front edge 32a of the stirring blade 20a forms an extension of the edge 34a of the pillar member 18a.

In the figures 7 to 15 four further embodiments of the invention are shown. The following descriptions and the drawings, are essentially limited to the differences between the embodiments, where with respect to the same specified components, in particular with respect to components with the same reference numerals in principle also to the drawings and / or description of the other embodiments, in particular Figures 1 to 6 can be referred to. To distinguish the embodiments of the letter is a readjusted to the reference numerals in the embodiments of Figures 1 to. 6 In the embodiments of Figures 7 to 15 is the

Letter A is replaced by the letter b to f.

Figures 7 and 8 show perspective views of a second

Stirring device 10b. The second stirring device 10b has a support unit 12b. The support unit 12b includes a connection member 14b for connection to a not-shown drive shaft. Further, the carrier unit 12b 20b includes a beam member 18b for fastening at least a stirring blade. The second stirring device 10b has the stirring blade 20b. The beam member 18b and the connecting element 14b are integrally connected to each other. In the present case, the support unit 12b is formed in one piece.

The beam member 18b has a portion 22b with an at least

Substantially square cross-section. In the present case, the

Portion 22b has a rectangular cross-section. Further, in the present case the whole beam member 18b has a substantially quadrangular, in particular rectangular cross section. At least in sections, the edges of the pillar member 18b are beveled.

The stirring blade 20b is rubberized in this case. The stirring blade 20b is basically configured similarly to stirring blade 20a of the embodiment of Figures 1 through 6 and attached to the beam member 18b. A metallic base body of the stirring blade 20b, a rubber coating 62b, however, is drawn in this case. Material and material thickness of the

Rubber coating 62b and its size can be adjusted in a simple and / or inexpensive way to an application.

9 shows a third agitator 10c is a perspective

Presentation. The third agitator 10c has a support unit 12c. The carrier unit 12c comprises a connecting member 14c for connection to a drive shaft 1 6c. Further, the carrier unit 12c includes a beam member 18c for fixing at least a stirring blade 20c. The third agitator 10c has the stirring blade 20c. The beam member 18c and the connecting element 14c are integrally connected with each other. In the present case, the carrier unit 12c is integrally formed.

The beam member 18c has a portion 22c with an at least

Substantially square cross-section. In the present case, the

Section 22c has a rectangular cross-section. Further, in the present case the whole beam member 18c has a substantially quadrangular

in particular rectangular cross-section. At least in sections, the edges of the beam member 18c are beveled.

In the present case, the beam member 18c is formed cuboid. A cross section of the spar member 18c is constant. The cross section of

Holm member 18c is unchanged along a longitudinal direction 64c of the pillar member 18c. The longitudinal direction 64c of the pillar member 18c corresponds to a radial direction. Such a configuration is particularly easy to produce. In particular, the carrier unit can be 12c cut out from a plate-like workpiece or punched without a chamfer is advantageous to make at certain locations.

Figures 10 and 1 1 show different views of a fourth 10d stirring device. The fourth agitator 10d has a support unit 12d. The support unit 12d includes a connection member 14d for connecting to a not-shown drive shaft. Further, the support unit 12d includes a beam member 20d 18d for fastening at least a stirring blade. The fourth agitator 10d, the stirring blade to 20d. The beam member 18d and the connecting element 14d are integrally connected with each other. In the present case, the support unit 12d is integrally formed.

The beam member 18d has a section 22d with an at least

Substantially square cross-section. In the present case, the

Portion 22d has a rectangular cross-section. Further, in the present case the whole beam member 18d has a substantially quadrangular, in particular rectangular cross section. At least in sections, the edges of the pillar member 18d are chamfered.

, At least a portion of the support unit 12d is of a multilayer structure having at least two sheets 38d 40d 42d, 43d are formed. In this case, the entire carrier unit is formed 12d of the layer structure 38d. Further, 38d, in the present case, the layer structure comprises a first plate 40d, a second plate 42d and 43d, a third sheet. The plates 40d, 42d, 43d are formed of stainless steel. The second plate 42d is formed in the present case as a central plate. The second plate 42d has the connecting element 14d and the beam member 18d.

The first plate 40d is formed as an upper reinforcing panel. The third plate 43d is formed as a lower reinforcing plate. The first plate 40d and third plate 43d each have more beam members 66d, 68d, and other connecting elements 70d, 72d. The beam members 18d, 66d, 68d together form a spar of the support unit 74d from 1 2d. The

Tie elements 14d, 70d, 72d together form a

Shaft connection unit 76d of the support unit 12d for connecting to the

Drive shaft. The support unit 12d is constructed in the manner of a sheet of plywood from the plates 40d, 42d, 43d.

The beam member 18d and the stirring blade 20d are integrally connected with each other.

The stirring blade 20d is part of the second plate 42d. In a preparation of the fourth stirring device 10d, the first sheet 40d, the second plate 42d and third plate 43d cut from a parent sheet, or punched out. If desired, corners can be rounded or chamfered.

Subsequently, the plates 40d, 42d, 43d arranged over each other and glued together and / or welded and / or screwed and / or riveted. The second plate 42d is selectively deformed to form the stirring blade 20d. The stirring blade 20d is curved out of a plane, the pillar member 18d and 14d of the connecting element out.

Figures 12 to 15 show different views of a fifth

Stirrer 10e. The fifth stirring device 10e has a support unit 12e. The carrier unit 12e includes a connection member 14e for connection to a not-shown drive shaft. Further, the support unit includes a 12e

Beam member 18e for fixing at least one stirring blade, not shown. The beam member 18e and the connecting element 14e are integrally connected together. In the present case, the carrier unit 12e is integrally formed.

The beam member 18e has a portion 22e with an at least

Substantially square cross-section. In the present case, the

Portion 22e has a rectangular cross-section.

The beam member 18e is formed at least partially twisted. In the present case, the beam member 18e is formed twisted in a connecting portion 78e to the connecting element 14e. The connection portion 78e corresponds to a torsion. A straight portion 80e of the spar element 18e adjacent to the connection portion 78e to. The straight portion 80e of the

Holm element 18e is opposite the connecting element 14e is rotated by about 20 °. but other angles are as stated above conceivable. A tethered stirring blade is employed by stirring the basis of the torsion of the carrier unit 12e. Employment of a stirring blade can be made by adjusting a Tordierungswinkels easily. The support unit 12e, for example, by cutting or

Punching out a blank from a plate-like workpiece and a

then targeted twisting of portions of the blank produced.

Figure 1 6 shows a schematic flowchart of a method for producing a stirring device, for example one of the stirring devices of the preceding embodiments. The stirring device has a

Carrier unit on which a connecting element for connection to a

having drive shaft and at least one beam member for securing at least a stirring blade. In a first method step 82f a common plate-like workpiece, for example a plate, a suitable thickness is provided. In a second process step, the 84f are

Access member and the beam member from the common plate-like workpiece produced. In the present case, a carrier unit blank is cut out of the workpiece in the second process step 84f. In a third method step 86f of the support unit blank is reworked to produce the carrier unit and in particular the stirring device. For example 86f edges of the support unit may be used in the third method step, rounded and / or chamfered. Further, it is conceivable that the third in

Step welded 86f stirring blades to the support unit and / or stirring blades are made by bending a metal sheet. Of course, it is also conceivable that the third method step 86f includes a plurality of corresponding sub-steps.

reference numeral

10 stirrer

12 support unit

14 connecting element

16 drive shaft

18 Holm Element

20 stirring blade

22 section

24 connecting area

26 Anbindungsflansch

28 shaft flange

30 longitudinal side

32 front edge

34 edge

36 end side

38 layer structure

40 plate

42 plate

43 plate

44 mixer

46 axis of rotation

48 center

50 Holm Element

52 stirring blade

54 in the direction

56 section

58 section

60 outer contour

62 rubber coating

64 longitudinal beam member

Holm Element

Connecting element connecting element Holm

Shaft connection unit connecting region area

step

step

step

claims
Stirring device (10a; 10b; 10c; 10d; 10e) having at least one
Carrier unit (12a; 12b; 12c; 12d; 12e) having at least one
(18a; 18b; 18c; 18d; 18e) connecting element (14a; 14b; 14c; 14d;; 14e) for connection to a drive shaft (1 6a 1 6c) and at least one beam member for securing at least one stirring blade (20a, 20b; 20c ; 20d), characterized in that the beam member (18a; 18b; 18c; 18d; 18e) and the connecting element (14a; 14b; 14c; 14d; 14e) are integrally connected to each other.

Stirring device (10a; 10b; 10c; 10d; 10e) according to the preamble of claim 1 and particularly according to claim 1, characterized

in that the beam member (18a; 18b; 18c; 18d; 18e) having at least one portion (22a) with an at least substantially square cross section.

Stirring device (10a; 10b; 10c; 10d; 10e) according to claim 1 or 2, characterized in that the beam member (18a; 18b; 18c; 18d; 18e) (14a; 14b; 14c; 14d; 14e) and the connecting element in a common connecting portion (24a) have an at least substantially identical material thickness.

4. stirring device (10a; 10b; 10c; 10d; 10e) according to any one of the preceding claims, characterized in that the

Connection member (14a; 14b; 14c; 14d; 14e) and the beam member (18a 18b; 18c; 18d; 18e) are formed from a common plate-like workpiece.

5. stirring device (10a; 10b; 10c; 10d; 10e) according to one of

preceding claims, characterized in that the

Connection member (14a; 14b; 14c; 14d; 14e) at least one

forming Anbindungsflansch (26a) for connection to a

Shaft flange (28a) is provided.

6. stirring device (10a; 10b; 10d) according to any one of the preceding

Claims, characterized in that the beam member (18a; 18b: 18d) tapering in at least one direction (54a) has a

cross-section.

7. stirring device (1 Oe) according to any one of the preceding claims,

characterized in that the beam member (18e) is formed at least partially twisted.

8. stirring device (10a; 10b; 10c; 10d) according to any one of the preceding claims, characterized by at least one stirring blade (20a; 20b; 20c; 20d) is connected with said beam member (18d 18a; 18b; 18c).

9. stirring device (10a; 10b; 10c; 10d) according to claim 8, characterized

is connected to this in that the stirring blade (20a; 20b; 20c; 20d) along a longitudinal side (30a) of the spar member (18d 18a; 18b; 18c).

10. stirring device (10a; 10b; 10c; 10d) as claimed in claim 8 or 9, wherein a leading edge (32a) of the stirring blade (20a; 20b; 20c; 20d) at least partly flush with at least one edge (34a) of the spar member (18a; 18b; 18c; 18d) closes.

1. 1 Stirring device (10a; 10b; 10c; 10d; 10e) according to any one of claims 8 to 10, characterized in that the stirring blade (20a; 20b; 20c; 20d) and the beam member (18a; 18b; 18c; 18d) on an end face (36a) of the spar member (18a; 18b; 18c; 18d) are connected together.

12. stirring device (1 Od) according to any one of claims 8 to 1 1, characterized

in that the beam member (18d) and the stirring blade (20d) are integrally connected to each other.

13. stirring device (1 Od) according to any one of the preceding claims,

characterized in that at least a part of the support unit (12d) from a layer structure (38d) with at least two plates (40d, 42d) is formed.

14. agitator with at least one stirring device (10a; 10b; 10c; 10d; 10e) according to any one of the preceding claims.

A process for producing a stirring device (10a; 10b; 10c; 10d; 10e), in particular according to one of claims 1 to 13, with at least one carrier unit (12a; 12b; 12c; 12d; 12e) having at least one

(18a; 18b; 18c; 18d; 18e) connecting element (14a; 14b; 14c; 14d;; 14e) for connection to a drive shaft (1 6a 1 6c) and at least one beam member (for fastening at least a stirring blade 20a; 20b; 20c ; 20d), characterized in that the connecting element (14a; 14b; 14c; 14d; 14e) and the beam member (18a; 18b; 18c; 18d; 18e) from a common plate-like workpiece can be produced.