EP1771241B1 - Dynamic mixer and its use - Google Patents
Dynamic mixer and its use Download PDFInfo
- Publication number
- EP1771241B1 EP1771241B1 EP05762079A EP05762079A EP1771241B1 EP 1771241 B1 EP1771241 B1 EP 1771241B1 EP 05762079 A EP05762079 A EP 05762079A EP 05762079 A EP05762079 A EP 05762079A EP 1771241 B1 EP1771241 B1 EP 1771241B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- agitator
- stirrer
- helical
- mixer
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/85—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with two or more stirrers on separate shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
- B01F27/922—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with two or more helices, e.g. with intermeshing helices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2215/00—Auxiliary or complementary information in relation with mixing
- B01F2215/04—Technical information in relation with mixing
- B01F2215/0409—Relationships between different variables defining features or parameters of the apparatus or process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2215/00—Auxiliary or complementary information in relation with mixing
- B01F2215/04—Technical information in relation with mixing
- B01F2215/0413—Numerical information
- B01F2215/0418—Geometrical information
- B01F2215/0422—Numerical values of angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/47—Mixing liquids with liquids; Emulsifying involving high-viscosity liquids, e.g. asphalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
- B01F27/1143—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections screw-shaped, e.g. worms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
- B01F27/1145—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections ribbon shaped with an open space between the helical ribbon flight and the rotating axis
Definitions
- the invention relates to a device comprising at least one housing, with at least two rotating stirrers wherein one of the stirrers is a helical or anchor stirrer arranged centrally in the housing, and at least one of the other stirrers is an eccentrically arranged screw or blade stirrer according to the preamble of Claim 1.
- Helical stirrers are often used for mixing liquids and solids.
- the task of the stirrer is to achieve the shortest possible mixing times with the lowest possible expenditure of energy until the mixture is homogenized.
- Many data on the mixing behavior of spiral systems can be found in the literature [ Tatterson, GB; Fluid mixing and gas dispersion in agitated tanks; McGraw-HiII Inc .; 1991; P. 325ff ].
- Spiral mixers are common mixer geometries for homogenizing higher-viscosity products.
- the above-described mixer system has the disadvantage that it can be produced only at very high costs, because the mixing tools to achieve self-cleaning similar to gears with a precisely matched geometry must be made and driven by a precise synchromesh.
- GB 2076675A are described trough mixer with helical mixer geometry. They are often used for mixing bulk goods or pasty media. These horizontally arranged mixers have the disadvantage that their housings can be shaped in complex and thus expensive geometric shapes have to. Furthermore, it is disadvantageous that the mixers are to be operated with their housing only in a horizontal arrangement.
- a mixer comprising at least one housing (1), at least two rotating stirrers (2) and (3) and optionally transverse bars for fixing the stirring elements of the centric rotor, wherein at least one of the stirrer (2) is centrally in the housing (1) arranged helical or anchor agitator, and at least one of the other agitator (3) is an eccentrically arranged worm or blade stirrer, the object of the invention.
- the invention therefore relates to a mixer according to claim 1.
- an input shaft and at least two output shafts can be used as drive means for the stirrer common motors with appropriate gear technology.
- a fixed speed ratio between the two stirrers is realized.
- the speed ratio of the two stirrers must remain constant during operation, since collisions of the two stirrers occur without a synchronization that is almost free from play.
- a drive technology with two or more motors in question, with which independent of each other speeds can be set. This creates at least one additional degree of freedom in the operation of the mixer.
- helical stirrers are understood as meaning mixers which are characterized by a shaft which is arranged centrically to the stirring elements and is optionally connected to the stirring elements via at least one transverse bar.
- the stirring elements of the helical stirrer can be made of a simple sheet metal or of hollow or solid material with a profiled cross-section. They form a helix (helix) of the slope S, which is arranged concentrically to the shaft.
- Wendelrrockers are understood here also such constructions whose slope S is due to the design changes with the circumferential length or the circumferential angle, as for example in the in DE 4117773 A1 described stirrers is the case.
- mixer which are characterized by a preferably centrally arranged shaft and stirring elements, which are arranged helically (helically) with the slope S around the shaft, preferably no or only a small gap between the stirring elements and the Wave is to be found.
- the slope S is not constant over the entire winding.
- helical stirrers and screw stirrers in the sense of this document also include the case in which the pitch of the helix or helix is infinitely large in the mathematical sense. Then the helical stirrer passes into an anchor stirrer and the screw stirrer into a blade stirrer.
- Anchor stirrer and blade stirrer in the sense of this document are understood to mean all technical designs according to the armature geometry, as described, for example, in: Ullmann's Encyclopedia of Industrial Chemistry; Marko Zlokarnik; stirring; DOI: 10.1002 / 14356007.b02_25; Wiley-VCH Verlag GmbH & Co. KGaA; Release 2003, 7th Editi on.
- stirrer arms can also be formed by interrupted or offset elements attached.
- elements for example, rods with round or triangular or quadrangular cross-section or spiral segments can be used.
- the housing has a substantially circular cross-section, deviations tolerated for example due to manufacturing tolerances in the ovality of containers.
- the bottom of the housing may have any common shapes, such as dished bottom, basket bottom or conical tapered bottom shapes.
- the ground anchor shape following the helical stirrer can be adapted to the shape of the ground without mixing disadvantages.
- the anchor shape can have an S-shaped or straight shape when viewed in horizontal section.
- the mixer has at least one opening for filling and / or emptying.
- the mixer has at least one opening for filling and / or emptying.
- Embodiments with at least one respective filling and emptying opening are particularly preferred.
- the mixers according to the invention are also characterized in that at least one eccentric stirrer (3) and at least one centric stirrer (2) rotate in opposite directions or in the same direction, very particularly preferably in the same direction.
- a mixer is preferred, which is characterized in that at least one eccentric screw mixer is in engagement with the centric helical stirrer, ie that the outside diameter of an eccentric stirrer intersects the inside diameter of the helical stirrer in a cross section perpendicular to the shafts.
- the relationship is the radial overlap length (e) and the coil width (b) in a section perpendicular to the waves understood. This is exemplary in Figure (2 outlined).
- the procedure is 30 to 99%, preferably 80 to 95%.
- a further relevant parameter of the mixer according to the invention is the number of flights of the stirrer.
- the number of flights of a helical or Schneckenrrockers is to be understood in the following the natural number, which results when dividing the angle 360 ° by the angle by which a stirrer must be rotated about its axis, so that the image of its section with a Level perpendicular to the stirrer shaft with the corresponding output sectional image coincides.
- mixers in which the number of turns of the armature or helical stirrer is 2. This has the advantage that during the rotation of this stirrer symmetrical conditions prevail about its axis, so that hardly any flow forces occur perpendicular to the stirrer shaft. On the other hand, the manufacturing expense for the production of the stirrer is still relatively low due to the smaller number of operations.
- a geometry with the number of turns 1 or 2 is preferred.
- the pitch of the stirrer is also a variable influencing the mixer.
- the pitch of a helical or worm stirrer is here the ratio of unwound height and unwound circumferential length, when unrolling a stirrer on the outer circumference on a plane and the positions, which passes through the contact point of the stirring blade with the plane by a line. The slope of this line is then the pitch of the stirrer.
- the pitch of spiral and worm stirrer is chosen to be constant.
- the pitches of the stirrers should therefore preferably behave inversely proportional to the peripheral speeds of the stirrers so that the vertical distances x u and x o between the two agitating blades remain nearly constant during engagement during movement.
- the pitch of the helical stirrer can be between 0.05 and infinite. In a preferred embodiment of the invention, the pitch of the helical stirrer is between 0.1 and 2.
- the speed ratio of screw to spiral agitator is in the range between 5: 1 and 1: 1.
- the mixer according to the invention preferably has a speed ratio of screw to helical stirrer of 4: 1 to 2: 1, particularly preferably of 3: 1.
- a particularly preferred design of the mixer is obtained by reinforcing the helical stirrer at the outer radius by means of stiffeners mounted parallel to the shaft, so that its overall construction can accommodate considerably higher forces and torques with little deformation.
- This design of the helical stirrer is particularly advantageous because it allows the worm stirrer to engage practically as deeply in the helical stirrer as without the stiffeners, which leads to a particularly good mixing action of the entire mixer.
- the pitch directions, pitches, speeds, and directions of rotation of the stirrers can be independently selected.
- the centric and an eccentric stirrer are in mutual engagement and the pitches of these two stirrers are coordinated so that the vertical spacing between the stirrer blades remains as constant and uniform as possible during engagement of the stirrer.
- At least one eccentric stirrer (3) and at least one centric stirrer rotate in opposite directions.
- the mixer preferably has a number of revolutions for the helical or anchor agitator of 2 and the number of threads for the helical or blade agitator of 1 or 2 in counter-rotating mixers.
- the pitch can also be chosen as desired, as well as the speed ratio.
- a mixer with counter-rotating stirrers may have stiffeners. These are then possible both on the helical outer diameter and on the helical inner diameter.
- the housing does not have to be completely provided with the internals according to the invention. It can e.g. for certain processes (degassing) a gas space above the stirrer installations be kept free.
- the mixers according to the invention surprisingly showed that the mixing times of these mixers are considerably shortened compared with conventional, comparable stirrers (spiral stirrers), in particular when the screw stirrer engages deeply in the helical stirrer and the stirrers with a speed ratio of screw stirrer to spiral stirrer of 2: 1 to Run 4: 1, and that this good mixing effect is maintained over a wide range of viscosity.
- the mixers according to the invention have heating or cooling elements on the inner wall of the housing.
- the housing may also be provided per se with the known conventional cooling or heating means, e.g. with a through-flow of heat transfer double jacket, electric heating coils etc.
- the mixer according to the invention is suitable for any mixing tasks in the chemical process technology, of course, as a reactor for stirred reactions.
- the mixer can also be used as a horizontal mixer, i. E. with horizontally arranged waves, operated.
- a horizontal arrangement of the shafts is useful, for example, for processes involving bulk goods or moist bulk materials.
- all other angles of inclination of the waves relative to the vertical between 0 and 90 ° are possible.
- FIGS. 1a, 1b and 1c show inventive mixer in the side view in different embodiments.
- FIGS. 1a, 1b and 1c show by way of example the embodiment with a transverse bar (4) at the end of the central shaft on which the coils are mounted.
- Figure 1c additionally shows the reinforcing rods (5) mounted parallel to the shaft.
- both the sense of rotation and the pitch of both stirrers must be identical. It also requires a synchronizing drive for both stirrers, which ensures that the two stirrers move at a fixed speed ratio and the stirring blades do not come into contact with each other.
- the pitch S 2 0.85 (corresponding to a lead angle of 40.6 mm) is selected for the eccentric worm stirrer °) at a speed ratio of 3: 1
- the slope S 2 1.28 (corresponding to a pitch angle of 52.1 °) at a speed ratio of 2: 1.
- FIG. 4 shows a variant of the mixer according to the invention, in which the centric helical stirrer (2) and the eccentric worm stirrer (3) are not in mutual engagement. Now both the direction of rotation and the pitch of both stirrers can be selected independently of each other. In addition, no synchronizing transmission with a fixed speed ratio is required here. It is now possible to adjust the conveying direction of both stirrers independently of each other so that either both stirrers have the same or different conveying directions axially.
- FIG. 5 shows a variant of the mixer according to the invention, in which the centric helical stirrer (2) and the eccentric worm stirrer (3) are in mutual engagement and driven synchronized.
- the centric helical stirrer (2) and the eccentric worm stirrer (3) are in mutual engagement and driven synchronized.
- four stiffening rods (4) are mounted parallel to the shafts on the outer diameter of the helical stirrer. hereby the entire construction of the helical stirrer is very efficiently stiffened against elastic and plastic deformation, without obstructing the engagement between the helical and the helical stirrer, which is important for shortening the mixing times.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung, die mindestens umfasst ein Gehäuse, mit mindestens zwei rotierenden Rührern wobei einer der Rührer ein zentrisch im Gehäuse angeordneter Wendel- oder Ankerrührer ist, und mindestens einer der anderen Rührer ein exzentrisch angeordneter Schnecken- oder Blattrührer ist gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device comprising at least one housing, with at least two rotating stirrers wherein one of the stirrers is a helical or anchor stirrer arranged centrally in the housing, and at least one of the other stirrers is an eccentrically arranged screw or blade stirrer according to the preamble of
Zum Mischen von Flüssigkeiten und Feststoffen werden häufig wendelförmige Rührer eingesetzt. Aufgabe des Rührers ist es, mit möglichst geringem Energieaufwand möglichst kurze Mischzeiten bis zur Homogenisierung des Mischguts zu erzielen. In der Literatur sind viele Daten zum Mischverhalten von Wendelsystemen zu finden [
Die Anforderungen, die durch chemische und andere Produktionsverfahren an das Mischverhalten gestellt werden, nehmen ständig zu, da verringerte Mischzeit bei gleichem Energieeintrag zu verringerten Gesamtkosten in der Produktion führen.The demands placed on the mixing behavior by chemical and other production methods are constantly increasing, since reduced mixing time with the same energy input leads to reduced overall costs in production.
Zur Vergrößerung der Raum-Zeit-Ausbeute in Produktionsverfahren ist es außerdem von Interesse, möglichst viele Prozessschritte in einem Mischapparat durchzuführen. Apparate mit Rührern müssen daher Mischgüter trotz großer Viskositätsänderungen mit geringen Mischzeiten homogenisieren können. Diese Mischaufgabe kann mit herkömmlichen Wendelrühreranordnungen mit einer Welle nur unzureichend erfüllt werden. In der Literatur ist schon häufig beschrieben worden, dass sich die Mischzeiten im mittelviskosen Strömungsbereich um ein vielfaches erhöhen [
In der
Das oben geschilderte Mischersystem hat allerdings den Nachteil, dass es nur zu sehr hohen Kosten hergestellt werden kann, weil die Mischwerkzeuge zur Erreichung der Selbstreinigung ähnlich wie Zahnräder mit einer präzise aufeinander abgestimmten Geometrie gefertigt und durch ein genaues Synchrongetriebe angetrieben werden müssen.However, the above-described mixer system has the disadvantage that it can be produced only at very high costs, because the mixing tools to achieve self-cleaning similar to gears with a precisely matched geometry must be made and driven by a precise synchromesh.
In der
In
Es bestand daher die Aufgabe, einen Mischer mit zylindrischem Gehäuse bereitzustellen, der eine gute axiale und radiale Durchmischung des Mischguts bei gleichbleibender guter Mischzeit auch während großen Viskositätsänderungen im Prozess und bei niedrigen Kosten sowohl für die Fertigung der Mischwerkzeuge und des Antriebs als auch für die zum Mischen aufgewendete Energie aufweist.It was therefore an object to provide a mixer with a cylindrical housing, which has a good axial and radial mixing of the mix while maintaining good mixing time even during large changes in viscosity in the process and at low cost both for the production of mixing tools and the drive and for Mixing has spent energy.
Überraschenderweise wurde nun gefunden, dass ein Mischer umfassend mindestens ein Gehäuse (1), mindestens zwei rotierende Rührer (2) und (3) sowie gegebenenfalls Querbalken zur Fixierung der Rührelemente des zentrischen Rotors, wobei mindestens einer der Rührer (2) ein zentrisch im Gehäuse (1) angeordneter Wendel- oder Ankerrührer ist, und mindestens einer der anderen Rührer (3) ein exzentrisch angeordneter Schnecken- oder Blattrührer ist, die erfindungsgemäße Aufgabe erfüllt.Surprisingly, it has now been found that a mixer comprising at least one housing (1), at least two rotating stirrers (2) and (3) and optionally transverse bars for fixing the stirring elements of the centric rotor, wherein at least one of the stirrer (2) is centrally in the housing (1) arranged helical or anchor agitator, and at least one of the other agitator (3) is an eccentrically arranged worm or blade stirrer, the object of the invention.
Gegenstand der Erfindung ist daher ein Mischer gemäß Anspruch 1.The invention therefore relates to a mixer according to
Als Antriebsmittel für die Rührer können gängige Motoren mit entsprechender Getriebetechnik, einer Eingangswelle und mindestens zwei Abgangswellen verwendet werden. Durch das Getriebe wird hierbei ein festes Drehzahlverhältnis zwischen den beiden Rührern realisiert. In Abhängigkeit von den gewählten Steigungs- und Durchmesserverhältnissen, muss das Drehzahlverhältnis der beiden Rührer während des Betriebs konstant bleiben, da es ohne eine mechanisch fast spielfreie Synchronisation zu Kollisionen der beiden Rührer kommt. Für Bauarten des Mischers, bei denen das Drehzahlverhältnis von der Geometrie unabhängig gewählt werden kann, kommt auch eine Antriebstechnik mit zwei oder mehreren Motoren in Frage, mit denen von einander unabhängige Drehzahlen eingestellt werden können. Hierdurch entsteht mindestens ein zusätzlicher Freiheitsgrad beim Betrieb des Mischers.As drive means for the stirrer common motors with appropriate gear technology, an input shaft and at least two output shafts can be used. By the transmission here a fixed speed ratio between the two stirrers is realized. Depending on the selected gradient and diameter ratios, the speed ratio of the two stirrers must remain constant during operation, since collisions of the two stirrers occur without a synchronization that is almost free from play. For types of mixer where the speed ratio is independent of the geometry can be selected, also a drive technology with two or more motors in question, with which independent of each other speeds can be set. This creates at least one additional degree of freedom in the operation of the mixer.
Unter Wendelrührer im Sinne dieser Schrift werden Mischer verstanden, die gekennzeichnet sind durch eine Welle, die zentrisch zu den Rührelementen angeordnet ist und gegebenenfalls über mindestens einen Querbalken mit den Rührelementen verbunden ist. Die Rührelemente der Wendelrührer können aus einem einfachen Blech oder aus Hohl- oder Vollmaterial mit profiliertem Querschnitt ausgeführt sein. Sie bilden eine Wendel (Helix) der Steigung S, die konzentrisch zur Welle angeordnet ist. Unter Wendelrührers werden hier auch solche Konstruktionen verstanden, deren Steigung S sich konstruktionsbedingt mit der Umfangslänge bzw. dem Umfangswinkel ändert, wie dies zum Beispiel bei den in
Unter Schneckenrührer im Sinne dieser Schrift werden Mischer verstanden, die gekennzeichnet sind durch eine bevorzugt zentrisch angeordnete Welle und Rührelemente, die wendelförmig (helixförmig) mit der Steigung S um die Welle angeordnet sind, wobei vorzugsweise kein oder nur ein geringer Spalt zwischen den Rührelementen und der Welle zu finden ist. Mit Schneckenrührer sind hier auch solche Konstruktionen gemeint, deren Steigung S nicht konstant über der gesamten Aufwicklung ist.Under worm stirrers in the context of this document are understood mixer, which are characterized by a preferably centrally arranged shaft and stirring elements, which are arranged helically (helically) with the slope S around the shaft, preferably no or only a small gap between the stirring elements and the Wave is to be found. With Schneckenrührer here are also such constructions meant, the slope S is not constant over the entire winding.
Die Begriffe Wendelrührer und Schneckenrührer im Sinne dieser Schrift umfassen auch den Fall, dass die Steigung der Wendel bzw. der Schnecke im mathematischen Sinne unendlich groß ist. Dann geht der Wendelrührer in einen Ankerrührer über und der Schneckenrührer in einen Blattrührer. Unter Ankerrührer und Blattrührer im Sinne dieser Schrift werden alle technischen Ausführungen gemäß der Ankergeometrie verstanden, wie beispielsweise beschrieben in:
In einer bevorzugten Ausführungsform der Erfindung weist das Gehäuse einen im wesentlichen kreisförmigem Querschnitt auf, wobei Abweichungen zum Beispiel aufgrund von Fertigungstoleranzen in der Unrundheit von Behältern toleriert werden.In a preferred embodiment of the invention, the housing has a substantially circular cross-section, deviations tolerated for example due to manufacturing tolerances in the ovality of containers.
Der Boden des Gehäuses kann beliebige gängige Formen aufweisen, wie zum Beispiel Klöpperboden, Korbbogenboden oder kegelförmig verjüngende Bodenformen. Die an die Wendelrührer anschließende Bodenankerform kann ohne mischtechnische Nachteile an die Bodenform angepasst werden. Die Ankerform kann im horizontalen Schnitt gesehen eine S-förmige oder gerade Gestalt aufweisen.The bottom of the housing may have any common shapes, such as dished bottom, basket bottom or conical tapered bottom shapes. The ground anchor shape following the helical stirrer can be adapted to the shape of the ground without mixing disadvantages. The anchor shape can have an S-shaped or straight shape when viewed in horizontal section.
In einer weiteren bevorzugten Ausführungsform der Erfindung verfügt der Mischer über mindestens eine Öffnung zum Befüllen und/oder Entleeren. Besonders bevorzugt sind Ausführungen mit mindestens jeweils einer Befüll- und Entleeröffnung.In a further preferred embodiment of the invention, the mixer has at least one opening for filling and / or emptying. Embodiments with at least one respective filling and emptying opening are particularly preferred.
Die erfindungsgemäßen Mischer sind auch dadurch gekennzeichnet, dass mindestens ein exzentrischer Rührer (3) und mindestens ein zentrischer Rührer (2) gegenläufig oder gleichläufig, ganz besonders bevorzugt gleichläufig rotieren.The mixers according to the invention are also characterized in that at least one eccentric stirrer (3) and at least one centric stirrer (2) rotate in opposite directions or in the same direction, very particularly preferably in the same direction.
Im Fall der gleichläufig rotierenden Rührer gelten weitere bevorzugte Ausführungsformen:In the case of the co-rotating stirrers, further preferred embodiments apply:
Bevorzugt ist ein Mischer, der dadurch gekennzeichnet ist, dass mindestens ein exzentrischer Schneckenrührer sich im Eingriff mit dem zentrischen Wendelrührer befindet, d.h. dass der Außendurchmesser eines exzentrischen Rührers sich in einem Querschnitt senkrecht zu den Wellen mit dem Innendurchmesser des Wendelrührers überschneidet. Unter dem Eingriff E im Sinne dieser Schrift wird das Verhältnis aus der radialen Überschneidungslänge (e) und der Wendelbreite (b) in einem Schnitt senkrecht zu den Wellen verstanden. Dies ist exemplarisch in
In einer bevorzugten Ausführungsform beträgt der Eingriff 30 bis 99%, bevorzugt 80 bis 95%.In a preferred embodiment, the procedure is 30 to 99%, preferably 80 to 95%.
Eine weiterhin relevante Kenngröße des erfindungsgemäßen Mischers ist die Gangzahl der Rührer.A further relevant parameter of the mixer according to the invention is the number of flights of the stirrer.
Unter der Gangzahl eines Wendel- oder Schneckenrührers soll im folgenden die natürlich Zahl verstanden werden, die sich ergibt, wenn man den Winkel 360° durch denjenigen Winkel dividiert, um den ein Rührer um seine Achse rotiert werden muss, damit das Bild seines Schnittes mit einer Ebene senkrecht zur Rührwelle mit dem entsprechenden Ausgangsschnittbild zur Deckung kommt.The number of flights of a helical or Schneckenrührers is to be understood in the following the natural number, which results when dividing the angle 360 ° by the angle by which a stirrer must be rotated about its axis, so that the image of its section with a Level perpendicular to the stirrer shaft with the corresponding output sectional image coincides.
Besonders bevorzugt sind Mischer, bei denen die Gangzahl des Anker- oder Wendelrührers 2 beträgt. Dies hat zum einen den Vorteil, dass bei der Rotation dieses Rührers um seine Achse symmetrische Verhältnisse herrschen, so dass kaum Strömungskräfte senkrecht zur Rührwelle auftreten. Zum anderen ist der fertigungstechnische Aufwand zur Herstellung des Rührers aufgrund der geringeren Anzahl von Arbeitsgängen noch vergleichsweise niedrig. Für den Schneckenrührer oder Blattrührer wird eine Geometrie mit der Gangzahl 1 oder 2 bevorzugt.Particularly preferred are mixers in which the number of turns of the armature or helical stirrer is 2. This has the advantage that during the rotation of this stirrer symmetrical conditions prevail about its axis, so that hardly any flow forces occur perpendicular to the stirrer shaft. On the other hand, the manufacturing expense for the production of the stirrer is still relatively low due to the smaller number of operations. For the screw stirrer or blade stirrer, a geometry with the number of
Des weiteren ist die Steigung des Rührers eine den Mischer ebenfalls beeinflussende Größe.Furthermore, the pitch of the stirrer is also a variable influencing the mixer.
Die Steigung eines Wendel- oder Schneckenrührers ist hierbei das Verhältnis aus abgewickelter Höhe und abgewickelter Umfangslänge, wenn man einen Rührer am Außenumfang auf eine Ebene abwickelt und die Positionen, die der Kontaktpunkt des Rührblatts mit der Ebene durchläuft durch eine Linie kennzeichnet. Die Steigung dieser Linie ist dann die Steigung des Rührers.The pitch of a helical or worm stirrer is here the ratio of unwound height and unwound circumferential length, when unrolling a stirrer on the outer circumference on a plane and the positions, which passes through the contact point of the stirring blade with the plane by a line. The slope of this line is then the pitch of the stirrer.
In vielen Fällen wird die Steigung von Wendel- und Schneckenrührer konstant gewählt. Es gibt aber auch Ausführungen, bei denen konstruktionsbedingt eine über den Umfang variable Steigung vorliegt, wie zum Beispiel bei den in
Die Steigungen der Rührer sind dann besonders günstig aufeinander abgestimmt, wenn die folgende mathematische Beziehung (I) erfüllt ist:
Die Steigungen der Rührer sollten sich daher vorzugsweise umgekehrt proportional zu den Umfangsgeschwindigkeiten der Rührer verhalten, damit die vertikalen Abstände xu und xo zwischen den beiden Rührblättern im Eingriff während der Bewegung nahezu konstant bleiben.The pitches of the stirrers should therefore preferably behave inversely proportional to the peripheral speeds of the stirrers so that the vertical distances x u and x o between the two agitating blades remain nearly constant during engagement during movement.
Für die nach Gleichung I abgestimmten Rührer wurde für gleiche vertikale Abstände zwischen den Rührblättern xu=xo eine deutliche Mischzeitverkürzung im Reynoldszahlbereich von 100 gegenüber der Konfiguration nur mit Wendelrührer ohne Schnecke festgestellt. Die Messergebnisse sind in
Überraschender Weise wurde weiterhin gefunden, dass mit einer vertikalen Abstandsverteilung xu<<xo bei Förderrichtung des Wendelrührers in Behälterwandnähe nach unten die Mischzeit im Reynoldszahlbereich von 100 weiterhin reduziert werden kann. Für diese Verkürzung der Mischzeit ist es von Vorteil, wenn der kleinere Abstand xu << xo bei Förderrichtung der Wendel nach unten und xo << xu bei Förderrichtung der Wendel nach oben gewählt wird.Surprisingly, it was also found that with a vertical distance distribution x u << x o in the conveying direction of the spiral agitator in the container wall near down the mixing time in the Reynolds number range of 100 can be further reduced. For this shortening of the mixing time, it is advantageous if the smaller distance x u << x o in the conveying direction of the helix down and x o << x u in the conveying direction of the helix is selected upwards.
Die Steigung des Wendelrührers kann zwischen 0,05 und unendlich liegen. In einer bevorzugten Ausfübrungsform der Erfindung beträgt die Steigung des Wendelrührers zwischen 0,1 und 2.The pitch of the helical stirrer can be between 0.05 and infinite. In a preferred embodiment of the invention, the pitch of the helical stirrer is between 0.1 and 2.
Das Drehzahlverhältnis von Schnecken- zu Wendelrührer liegt im Bereich zwischen 5:1 und 1:1. Bevorzugt weist der erfindungsgemäße Mischer zudem ein Drehzahlverhältnis von Schnecken- zu Wendelrührer von 4:1 bis 2:1, besonders bevorzugt von 3:1, auf.The speed ratio of screw to spiral agitator is in the range between 5: 1 and 1: 1. In addition, the mixer according to the invention preferably has a speed ratio of screw to helical stirrer of 4: 1 to 2: 1, particularly preferably of 3: 1.
Eine besonders bevorzugte Bauform des Mischers erhält man dadurch, dass man den Wendelrührer am äußeren Radius mit Hilfe von parallel zur Welle angebrachten Versteifungen verstärkt, so dass seine Gesamtkonstruktion erheblich höhere Kräfte und Drehmomente bei geringer Deformation aufnehmen kann. Diese Bauweise des Wendelrührers ist deshalb besonders vorteilhaft, weil sie es gestattet, den Schneckenrührer praktisch genauso tief in den Wendelrührer eingreifen zu lassen, wie ohne die Versteifungen, was zu einer besonders guten Mischwirkung des gesamten Mischers führt.A particularly preferred design of the mixer is obtained by reinforcing the helical stirrer at the outer radius by means of stiffeners mounted parallel to the shaft, so that its overall construction can accommodate considerably higher forces and torques with little deformation. This design of the helical stirrer is particularly advantageous because it allows the worm stirrer to engage practically as deeply in the helical stirrer as without the stiffeners, which leads to a particularly good mixing action of the entire mixer.
Falls der Schneckenrührer nicht in den Wendelrührer eingreift, können die Steigungsrichtungen, die Steigungen, die Drehzahlen und Drehrichtungen der Rührer unabhängig voneinander gewählt werden.If the worm stirrer does not interfere with the helical stirrer, the pitch directions, pitches, speeds, and directions of rotation of the stirrers can be independently selected.
Falls jedoch der Schneckenrührer in den Wendelrührer eingreift, müssen die Steigungsrichtungen und die Drehrichtungen der Rührer gleich sein.However, if the worm stirrer engages the helical stirrer, the pitch directions and the directions of rotation of the stirrers must be the same.
In einer besonders bevorzugten Ausführung der Erfindung befinden sich der zentrische und ein exzentrischer Rührer im gegenseitigen Eingriff und die Steigungen dieser beiden Rührer sind so aufeinander abgestimmt, dass der vertikale Abstand zwischen den Rührblättern im Eingriff während der Umdrehung der Rührer möglichst konstant und gleichförmig bleibt. Dies hat den Vorteil, dass bei der Herstellung der Rührer und beim Bau des Getriebes für den synchronen Antrieb beider Rührer nur vergleichsweise geringe Anforderungen an die Fertigungstoleranzen gestellt werden müssen.In a particularly preferred embodiment of the invention, the centric and an eccentric stirrer are in mutual engagement and the pitches of these two stirrers are coordinated so that the vertical spacing between the stirrer blades remains as constant and uniform as possible during engagement of the stirrer. This has the advantage that in the manufacture of the stirrer and the construction of the transmission for the synchronous drive Both stirrer only comparatively low demands on the manufacturing tolerances must be made.
In einer weiteren Ausführungsfbrm des erfindungsgemäßen Mischers rotieren mindestens ein exzentrischer Rührer (3) und mindestens ein zentrischer Rührer gegenläufig.In a further embodiment of the mixer according to the invention, at least one eccentric stirrer (3) and at least one centric stirrer rotate in opposite directions.
Bei gegenläufiger Rotation dürfen die Mischer nicht im Eingriff sein.In reverse rotation, the mixers must not be engaged.
Des weiteren bevorzugt weist der Mischer bei gegenläufig rotierenden Mischern vorzugsweise eine Gangzahl für den Wendel- oder Ankerrührer von 2 und die Gangzahl für den Schnecken- oder Blattrührer von 1 oder 2 auf.Furthermore, the mixer preferably has a number of revolutions for the helical or anchor agitator of 2 and the number of threads for the helical or blade agitator of 1 or 2 in counter-rotating mixers.
Bei gegenläufig rotierenden Rühren kann zudem die Steigung beliebig gewählt werden, ebenso wie das Drehzahlverhältnis.In the case of counter-rotating stirring, the pitch can also be chosen as desired, as well as the speed ratio.
Ebenso kann ein Mischer mit gegenläufig rotierenden Rührern Versteifungen aufweisen. Diese sind dann sowohl auf dem Wendelaußendurchmesser als auch auf dem Wendelinnendurchmesser möglich.Likewise, a mixer with counter-rotating stirrers may have stiffeners. These are then possible both on the helical outer diameter and on the helical inner diameter.
Das Gehäuse muss nicht mit den erfindungsgemäßen Einbauten vollständig versehen sein. Es kann z.B. für bestimmte Prozesse (Entgasung) ein Gasraum über den Rührereinbauten freigehalten sein.The housing does not have to be completely provided with the internals according to the invention. It can e.g. for certain processes (degassing) a gas space above the stirrer installations be kept free.
Die erfindungsgemäßen Mischer zeigten überraschenderweise, dass die Mischzeiten dieser Mischer gegenüber konventionellen, vergleichbaren Rührwerken (Wendelrührern) erheblich verkürzt sind, insbesondere dann, wenn der Schneckenrührer tief in den Wendelrührer eingreift, und die Rührer mit einem Drehzahlverhältnis von Schneckenrührer zu Wendelrührers von 2:1 bis 4:1 laufen, und dass diese gute Mischwirkung auch über einen großen Viskositätsbereich hinweg erhalten bleibt.The mixers according to the invention surprisingly showed that the mixing times of these mixers are considerably shortened compared with conventional, comparable stirrers (spiral stirrers), in particular when the screw stirrer engages deeply in the helical stirrer and the stirrers with a speed ratio of screw stirrer to spiral stirrer of 2: 1 to Run 4: 1, and that this good mixing effect is maintained over a wide range of viscosity.
Bei der Vakuumdestillation eines Gemischs aus Polymer und Lösemittel, bei der es zu einer starken Schaumbildung kommt, wenn man mit einem konventionellen Mischer arbeitet, wurde überraschenderweise festgestellt, dass der Schaum gegenüber dem konventionellen Mischer durch den erfindungsgemäßen Mischer um ein Vielfaches besser zerstört bzw. wieder in das Mischgut eingezogen wird. Der erfindungsgemäße Mischer eignet sich also in besonderer Weise für Prozesse, bei denen eine störende Schaumbildung auftritt.In the vacuum distillation of a mixture of polymer and solvent, in which it comes to a strong foaming when working with a conventional mixer, it was surprisingly found that the foam Compared to the conventional mixer by the mixer according to the invention much better destroyed or retracted into the mix. The mixer according to the invention is therefore particularly suitable for processes in which a disturbing foaming occurs.
In einer bevorzugten Ausführungsform der Erfindung weisen die erfindungsgemäßen Mischer an der Innenwand des Gehäuses Heiz- oder Kühlelemente auf. Ansonsten kann das Gehäuse auch an sich mit den bekannten üblichen Kühl- oder Heizeinrichtungen versehen sein, z.B. mit einem von Wärmeträgern durchströmbaren Doppelmantel, elektrischen Heizwendeln etc.In a preferred embodiment of the invention, the mixers according to the invention have heating or cooling elements on the inner wall of the housing. Otherwise, the housing may also be provided per se with the known conventional cooling or heating means, e.g. with a through-flow of heat transfer double jacket, electric heating coils etc.
Der erfindungsgemäße Mischer eignet sich für beliebige Mischaufgaben in der chemischen Prozesstechnik, selbstverständlich auch als Reaktor für gerührte Reaktionen.The mixer according to the invention is suitable for any mixing tasks in the chemical process technology, of course, as a reactor for stirred reactions.
Der Mischer kann neben dem oben hauptsächlich beschriebenen Betrieb mit vertikal angeordneten Wellen auch als Horizontalmischer, d.h. mit horizontal angeordneten Wellen, betrieben werden. Eine horizontale Anordnung der Wellen ist zum Beispiel für Prozesse mit Schüttgütern oder feuchten Schüttgütern sinnvoll. Daneben sind natürlich auch alle andere Neigungswinkel der Wellen gegenüber der Vertikalen zwischen 0 und 90° möglich.The mixer can also be used as a horizontal mixer, i. E. with horizontally arranged waves, operated. A horizontal arrangement of the shafts is useful, for example, for processes involving bulk goods or moist bulk materials. In addition, of course, all other angles of inclination of the waves relative to the vertical between 0 and 90 ° are possible.
Die Erfindung wird nachstehend anhand der Figuren beispielhaft näher erläutert.The invention will be explained in more detail by way of example with reference to the figures.
Es zeigen
- Figur 1a
- die Vorderansicht eines erfindungsgemäßen Mischers; das Gehäuse (1) ist geschnitten dargestellt.
- Figur 1b
- die Vorderansicht eines erfindungsgemäßen Mischers mit gegenüber
Figur 1a vergrößerten Steigungen von Wendel- und Schneckenrührer, das Gehäuse ist wiederum geschnitten dargestellt. - Figur 1c
- die Vorderansicht eines erfindungsgemäßen Mischers mit gegenüber
Figur 1a erhöhten Steigungen, bei dem Verstärkungsstäbe (5) am Außendurchmesser des Wendelrührers (2) angebracht sind. Das Gehäuse (1) ist wiederum geschnitten dargestellt. Figur 2- einen Schnitt durch einen erfindungsgemäßen Mischer mit der Gangzahl zwei für die Wendel (2) und der Gangzahl zwei für die Schnecke (3). Die Figur zeigt auch die Eingriffstiefe (e) und die Wendelbreite (b), aus denen sich der prozentuale Eingriff E errechnet.
Figur 3- einen Schnitt durch einen anderen erfindungsgemäßen Mischer, bei dem die Gangzahl des Wendelrührers (2) zwei und die Gangzahl des Schneckenrührers (3) eins beträgt.
Figur 4- einen Schnitt durch einen erfindungsgemäßen Mischer, bei dem Wendel (2) und Schnecke (3) sich nicht im Eingriff befinden.
Figur 5- einen Schnitt durch einen etfindungsgemäßen Mischer, bei dem zur Verbesserung der mechanischen Stabilität Verstärkungsstäbe (5) parallel zur Welle auf dem Außendurchmesser des Wendelrührers (2) angebracht sind.
- Figur 6
- eine graphische Darstellung des Zusammenhangs zwischen Re und NTm.
- FIG. 1a
- the front view of a mixer according to the invention; the housing (1) is shown in section.
- FIG. 1b
- the front view of a mixer according to the invention with opposite
FIG. 1a enlarged pitches of spiral and worm stirrer, the housing is shown in section again. - Figure 1c
- the front view of a mixer according to the invention with opposite
FIG. 1a elevated slopes, in which reinforcing rods (5) on the outer diameter of the helical stirrer (2) are mounted. The housing (1) is shown in section again. - FIG. 2
- a section through a mixer according to the invention with the number of threads two for the coil (2) and the number of gears two for the screw (3). The figure also shows the depth of engagement (e) and the helix width (b), from which the percentage engagement E is calculated.
- FIG. 3
- a section through another mixer according to the invention, in which the number of turns of the helical stirrer (2) is two and the number of flights of the Schneckenrührers (3) one.
- FIG. 4
- a section through a mixer according to the invention, wherein the helix (2) and worm (3) are not engaged.
- FIG. 5
- a section through a ethers according to the invention, in which for improving the mechanical stability reinforcing rods (5) are mounted parallel to the shaft on the outer diameter of the helical stirrer (2).
- FIG. 6
- a graphic representation of the relationship between Re and NTm.
Die nachfolgenden Beispiele dienen der Erläuterung der Erfindung, ohne dabei limitierend zu wirken.The following examples serve to illustrate the invention without being limiting.
Wiedergegeben ist das zylindrische Gehäuse (1), der zentrische Wendelrührer (2) und der exzentrische Schneckenrührer (3). Die
Da der Wendel- und der Schneckenrührer sich im Eingriff befinden, müssen sowohl der Drehsinn als auch der Steigungssinn beider Rührer identisch sein. Es ist auch ein synchronisierender Antrieb für beide Rührer erforderlich, der sicherstellt, dass sich die beiden Rührer mit einem festen Drehzahlverhältnis bewegen und die Rührblätter nicht miteinander in Kontakt kommen.Since the helical and the worm stirrer are engaged, both the sense of rotation and the pitch of both stirrers must be identical. It also requires a synchronizing drive for both stirrers, which ensures that the two stirrers move at a fixed speed ratio and the stirring blades do not come into contact with each other.
- Bei einem Drehzahlverhältnis von 3:1: S1/S2=3*0,37/0,95=1,17
- Bei einem Drehzahlverhältnis von 2:1: S1/S2=2*0,37/0,95=0,78
- At a speed ratio of 3: 1: S 1 / S 2 = 3 * 0.37 / 0.95 = 1.17
- At a speed ratio of 2: 1: S 1 / S 2 = 2 * 0.37 / 0.95 = 0.78
Wenn zum Beispiel für den zentrischen Wendelrührer der Wert S1=1 für die Steigung vorgegeben ist, was einem Steigungswinkel von 45° entspricht, so wählt man für den exzentrischen Schneckenrührer die Steigung S2=0,85 (entsprechend einem Steigungswinkel von 40,6°) bei einem Drehzahlverhältnis von 3:1 und die Steigung S2=1,28 (entsprechend einem Steigungswinkel von 52,1°) bei einem Drehzahlverhältnis von 2:1.If, for example, for the centric helical stirrer, the value S 1 = 1 is specified for the pitch, which corresponds to a pitch angle of 45 °, the pitch S 2 = 0.85 (corresponding to a lead angle of 40.6 mm) is selected for the eccentric worm stirrer °) at a speed ratio of 3: 1 and the slope S 2 = 1.28 (corresponding to a pitch angle of 52.1 °) at a speed ratio of 2: 1.
Claims (10)
- Device at least comprising a housing (1), at least two rotating agitators (2) and (3), one of the agitators (2) being a helical or anchor agitator arranged centrally in the housing (1), and at least one of the other agitators (3) being an eccentrically arranged screw or blade agitator, characterized in that the pitches, the rotary speeds and the outer diameters of the agitators satisfy the following mathematical relationship (I) :
- Device according to claim 1, characterized in that at least one eccentric agitator (3) and at least one central agitator (2) are corotating or counter rotating.
- Device according to one of claims 1 to 2, characterized in that the eccentric screw agitator engages with the central helical agitator.
- Device according to one of claims 1 to 3, characterized in that the engagement E is 30-99%.
- Device according to one of claims 1 to 3, characterized in that the engagement E is 80-95%.
- Device according to one of claims 1 to 4, characterized in that the number of flights for the helical or anchor agitator is two and the number of flights for the screw or blade agitator is one or two.
- Device according to one of claims 1 to 6, characterized in that the pitch S of the helical agitator is between 0.05 and infinity.
- Device according to one of claims 1 to 7, characterized in that the rotary speed ratio of screw agitator to helical agitator is in the range between 5:1 and 1:1.
- Device according to one of claims 1 to 8, having the upper distance xo and the lower distance xu between a helix of an eccentric agitator and a helix of a central agitator, characterized in that with downwards pumping direction of the helix xu << xo and with upwards pumping direction of the helix xo << xu.
- Use of a device according to one of claims 1 to 9 for producing or processing polymers.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004034395A DE102004034395A1 (en) | 2004-07-16 | 2004-07-16 | Dynamic mixer |
PCT/EP2005/007177 WO2006007967A1 (en) | 2004-07-16 | 2005-07-02 | Dynamic mixer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1771241A1 EP1771241A1 (en) | 2007-04-11 |
EP1771241B1 true EP1771241B1 (en) | 2009-02-25 |
Family
ID=34981250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05762079A Not-in-force EP1771241B1 (en) | 2004-07-16 | 2005-07-02 | Dynamic mixer and its use |
Country Status (7)
Country | Link |
---|---|
US (1) | US7871193B2 (en) |
EP (1) | EP1771241B1 (en) |
JP (1) | JP2008506512A (en) |
CN (1) | CN101022883B (en) |
AT (1) | ATE423616T1 (en) |
DE (2) | DE102004034395A1 (en) |
WO (1) | WO2006007967A1 (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004034395A1 (en) * | 2004-07-16 | 2006-02-16 | Bayer Technology Services Gmbh | Dynamic mixer |
DE202007001123U1 (en) * | 2007-01-25 | 2007-06-06 | KRÜGER, Günter | Plant for drying organic matter |
DE202007004912U1 (en) * | 2007-04-03 | 2007-07-26 | Blum, Holger | Apparatus for treating ballast water with aqueous acrolein solution |
KR100913399B1 (en) * | 2007-10-15 | 2009-08-21 | 손창구 | The Grain Mixing Machine |
DE102007054428A1 (en) * | 2007-11-13 | 2009-05-14 | Krones Ag | Eccentric stirrer |
CN101538420B (en) * | 2008-03-21 | 2012-02-22 | 北京康之维科技有限公司 | Method and equipment for shearing-cycling stirring type iron oxide orange production |
CN101862617B (en) * | 2009-04-14 | 2013-02-13 | 上海升立机械制造有限公司 | Vertical latex mixer |
EP2272412A1 (en) * | 2009-07-07 | 2011-01-12 | Koninklijke Philips Electronics N.V. | Mixing device |
CN101745582B (en) * | 2009-12-14 | 2013-03-20 | 广州兰格电气设备有限公司 | Method for twisting twisted frame type agitating blade and die thereof |
CN103223326A (en) * | 2013-04-26 | 2013-07-31 | 陕西科技大学 | Powder surface modification reactor |
WO2016106564A1 (en) * | 2014-12-30 | 2016-07-07 | Nestec S.A. | Cooking apparatus |
CN104984708A (en) * | 2015-06-24 | 2015-10-21 | 张家港市顺佳隔热技术有限公司 | High-speed mixing reaction kettle |
CN106179017A (en) * | 2016-08-31 | 2016-12-07 | 密友集团有限公司 | A kind of Double helix stirring structure |
CN106512773A (en) * | 2016-11-18 | 2017-03-22 | 广西大学 | Chemical industry mixing device with stable supporting |
HUE063578T2 (en) * | 2017-12-26 | 2024-01-28 | Hiroki Nakamura | Device for manufacturing a suspension |
CN107980819B (en) * | 2018-01-15 | 2020-11-06 | 北京英鸿光大生物技术有限公司 | Pure natural nano-grade disinfectant |
CN110384406B (en) * | 2018-04-23 | 2024-07-16 | 佛山市顺德区美的电热电器制造有限公司 | Material cleaning device, cooking utensil, discharging control method of cooking utensil and storage medium |
US11739289B2 (en) * | 2019-04-22 | 2023-08-29 | Lonza Ltd | Continuous blade impeller |
USD916564S1 (en) * | 2019-12-13 | 2021-04-20 | Revelution Technology, Llc | Mixer |
CN115461140A (en) * | 2021-04-07 | 2022-12-09 | 株式会社水除 | Liquid mixing blade and mixing device |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3476522A (en) * | 1966-11-16 | 1969-11-04 | Crawford & Russell Inc | High viscosity reactors |
US3482823A (en) * | 1968-03-08 | 1969-12-09 | Brighton Corp | Mixing kettle |
BE794985A (en) * | 1972-04-27 | 1973-05-29 | Petzholdt Maschf J S | VERTICAL MIXER |
US4198376A (en) * | 1974-02-14 | 1980-04-15 | Rhone-Progil | Vertical autoclave for bulk polymerization of vinyl chloride based polymers and copolymers |
JPS5438625Y2 (en) * | 1975-04-22 | 1979-11-16 | ||
DE3012707C2 (en) | 1980-04-01 | 1983-02-10 | BHS-Bayerische Berg-, Hütten- und Salzwerke AG, 8000 München | Mixing mechanism for trough mixers |
SU1111807A1 (en) * | 1983-01-11 | 1984-09-07 | Тамбовский институт химического машиностроения | Averager-batcher of continuous action |
JP3110781B2 (en) * | 1990-06-15 | 2000-11-20 | 住友重機械工業株式会社 | Stirrer |
DE4117773A1 (en) | 1991-05-31 | 1992-12-03 | Ekato Ruehr Mischtechnik | STIRRING DEVICE |
US5549384A (en) * | 1995-05-15 | 1996-08-27 | Reynolds; Augustus T. | Mixer with helically extending blades |
JP2002191952A (en) * | 2000-12-27 | 2002-07-10 | Lion Corp | Method for manufacturing composition containing hardly soluble raw material |
DE10248333A1 (en) * | 2002-01-25 | 2003-12-04 | Bayer Ag | Dynamic mixer |
DE102004034395A1 (en) * | 2004-07-16 | 2006-02-16 | Bayer Technology Services Gmbh | Dynamic mixer |
-
2004
- 2004-07-16 DE DE102004034395A patent/DE102004034395A1/en not_active Withdrawn
-
2005
- 2005-07-02 JP JP2007520708A patent/JP2008506512A/en active Pending
- 2005-07-02 DE DE502005006704T patent/DE502005006704D1/en active Active
- 2005-07-02 EP EP05762079A patent/EP1771241B1/en not_active Not-in-force
- 2005-07-02 US US11/572,146 patent/US7871193B2/en not_active Expired - Fee Related
- 2005-07-02 WO PCT/EP2005/007177 patent/WO2006007967A1/en active Application Filing
- 2005-07-02 AT AT05762079T patent/ATE423616T1/en not_active IP Right Cessation
- 2005-07-02 CN CN2005800311813A patent/CN101022883B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN101022883B (en) | 2011-10-19 |
WO2006007967A1 (en) | 2006-01-26 |
ATE423616T1 (en) | 2009-03-15 |
CN101022883A (en) | 2007-08-22 |
DE502005006704D1 (en) | 2009-04-09 |
EP1771241A1 (en) | 2007-04-11 |
JP2008506512A (en) | 2008-03-06 |
US7871193B2 (en) | 2011-01-18 |
US20070237024A1 (en) | 2007-10-11 |
DE102004034395A1 (en) | 2006-02-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1771241B1 (en) | Dynamic mixer and its use | |
DE69107124T2 (en) | Agitator. | |
DE69421505T2 (en) | Mixing device and method | |
EP0063171B1 (en) | Mixing apparatus | |
EP3702023B1 (en) | Inclined mixer | |
EP1631371B1 (en) | Device for the treatment of solid substances | |
EP3202489B1 (en) | Device for homogenizing and/or dispersing flowable products | |
DE10006253A1 (en) | Stirrer | |
DE2160410A1 (en) | Mixing device | |
EP2363200B1 (en) | Colloidal mixer and method, in particular for preparing building materials | |
WO2007065572A2 (en) | Large-scale reactor or thin-film evaporator with premixing unit | |
EP3095510B1 (en) | Stirrer and container with a stirrer | |
EP2796189B2 (en) | Two-shaft reactor/mixer | |
EP1474223B1 (en) | Dynamic mixer | |
EP3315191B1 (en) | Mixing device, in particular bulk material mixing device, and method | |
EP3093336A1 (en) | Fermenter for producing a structurally viscous medium | |
DE2047650A1 (en) | Process for making an essentially lump-free mixture | |
EP0930141A1 (en) | Mixer | |
EP1964604A2 (en) | Method and device for continuous production of a mixture composed of at least two different flow-capable phases | |
DE102011084053A1 (en) | Mixer with crushing and dispersing device | |
DE69724027T2 (en) | Stirring element and mixing device equipped with it | |
DE102010049034B4 (en) | Stirrer and agitator for mixing and / or homogenizing fluid media | |
DE2648086A1 (en) | Static mixer for low and high viscosity liquids - having helically twisted blades in a tubular housing | |
DE2216444A1 (en) | MIXING DEVICE FOR THE PRODUCTION OF A HOMOGENOUS MIXTURE FROM SEVERAL MATERIAL COMPONENTS | |
DE2732324A1 (en) | METHOD AND DEVICE FOR MIXING A REACTION MIXTURE |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20070216 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20070927 |
|
RTI1 | Title (correction) |
Free format text: DYNAMIC MIXER AND ITS USE |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: E. BLUM & CO. AG PATENT- UND MARKENANWAELTE VSP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REF | Corresponds to: |
Ref document number: 502005006704 Country of ref document: DE Date of ref document: 20090409 Kind code of ref document: P |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090525 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090625 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090605 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090812 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090525 |
|
BERE | Be: lapsed |
Owner name: BAYER TECHNOLOGY SERVICES G.M.B.H. Effective date: 20090731 |
|
26N | No opposition filed |
Effective date: 20091126 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090526 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090702 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20100723 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090702 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090826 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090225 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110702 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: SD Effective date: 20121228 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP Owner name: BAYER INTELLECTUAL PROPERTY GMBH, DE Effective date: 20130109 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502005006704 Country of ref document: DE Owner name: BAYER INTELLECTUAL PROPERTY GMBH, DE Free format text: FORMER OWNER: BAYER TECHNOLOGY SERVICES GMBH, 51373 LEVERKUSEN, DE Effective date: 20130226 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20130626 Year of fee payment: 9 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PUE Owner name: BAYER INTELLECTUAL PROPERTY GMBH, DE Free format text: FORMER OWNER: BAYER TECHNOLOGY SERVICES GMBH, DE |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20130716 Year of fee payment: 9 Ref country code: DE Payment date: 20130626 Year of fee payment: 9 Ref country code: CH Payment date: 20130712 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20130724 Year of fee payment: 9 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20140206 AND 20140212 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502005006704 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20150201 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20140702 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150201 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20150331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150203 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140731 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140731 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502005006704 Country of ref document: DE Effective date: 20150203 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140702 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140731 |