EP0397894A1 - Method for continuously bringing together solid powdery or granular materials, and device for carrying out the method - Google Patents
Method for continuously bringing together solid powdery or granular materials, and device for carrying out the method Download PDFInfo
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- EP0397894A1 EP0397894A1 EP89108657A EP89108657A EP0397894A1 EP 0397894 A1 EP0397894 A1 EP 0397894A1 EP 89108657 A EP89108657 A EP 89108657A EP 89108657 A EP89108657 A EP 89108657A EP 0397894 A1 EP0397894 A1 EP 0397894A1
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- European Patent Office
- Prior art keywords
- mixing
- blades
- shafts
- shaft
- angle
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- 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
- B01F23/50—Mixing liquids with solids
- B01F23/53—Mixing liquids with solids using driven stirrers
-
- 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
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
- B01F27/701—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers
- B01F27/702—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers with intermeshing paddles
Definitions
- the invention relates to a process for the continuous combination of powdery to granular solids with liquid or liquefiable, in particular aqueous, thermoplastic or plastic media, which are used as slurries or cold or hot mixes, in a counter-rotating twin-shaft mixer, in which the task of the components on the drive side and the discharge of the mixture takes place elsewhere, and a device for performing this method.
- twin-shaft mixers are particularly suitable for this purpose, which generally ensure good mixing characteristics through opposing, interrupted mixing screws and, in conjunction with a residence time of the material to be mixed, ensure the uniformly effective filling level of the mixing trough.
- the mixer shafts are usually equipped with three rows of mixing blades which promote screw formation, the number of mixing blades distributed evenly over the circumference and a section of the shaft, their angle of attack to the mixer shaft and their shape being determined by the task to be performed.
- the direction of rotation of the two parallel and oppositely arranged mixing shafts equipped with mixing blades, whose working areas mesh, is usually determined in such a way that that the material is lifted up in the middle between the two mixer shafts and brought together again at the bottom of the mixing trough, when the two material flows are mixed, in order to then be detected again and lifted upwards, the two mixed flows after their lateral drop, along the trough walls and corresponding to the feed caused by the helical arrangement of the mixing tools, are transported in the direction of the outlet.
- the solution to this problem according to the invention provides that shear forces are only imparted to the mix to be prepared with a shorter length of the remaining mixing section to such an extent that they ensure the maintenance of the achievable quasi-homogeneity.
- the solution to this problem is characterized by that the mixing blades can be traced back to the mixing shafts to an angle of about 90 °, ie to a neutral position, at the end of the mixing section bounded by the outlet, while in the position of the inlet of the media the mixing blades have an angle of attack to the direction of the outlet take at least 45 °, that the two shafts are equipped with mixing blades offset in 120 ° so that, starting from the first shaft lying in the top view from above, the vertical mixing blades are each arranged in a positive or negative distance leading or lagging, and that at this distance the following mixed sheets, also at the same distance and in the same division, are arranged over the remaining length of the shafts, the first middle mixing blade standing vertically in the first shaft and the first mixing blade standing 120 ° downward of the first shaft with the first middle mixing blade standing vertically on the opposite second shaft and the first 120 ° the mixing sheet below correspond at a distance.
- the present invention thus fulfills all the requirements of the task.
- the effective trough length of the mixer 1 is determined by the bulkhead 1.1 arranged on the side of task 1.3 and by the arrangement of the outlet 1.2.
- the spur gear drive 2 which is provided via a coupling, is intended for the counter-rotating mixer shafts 3.1 / 3.2 which are mounted in the bulkhead 1.1, these shafts being tubular shafts, the outer radii of which are about a quarter of the inner radii of the Mixing troughs 1 have.
- the two mixer shafts 3.1 / 3.2 are equipped with mixing blades 4 offset in 120 ° division.
- the perpendicular mixing blades 4 are each equally at a positive or negative distance A / 2, i.e. before or after, arranged according to the division.
- the mixing blades 4 have an approximately trapezoidal cross-section, which are mounted in adjusting rings welded to the tubular shafts 3.1 / 3.2, usually on their narrow side, although it can also be provided that instead of the narrow side of the mixing blade 4, this also has its broad side a correspondingly arranged pin can be adjusted.
- the setting angle in the conveying direction of the individual blades 4 can be withdrawn at any time in order to extend the time for the separate addition of individual additives.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren für die kontinuierliche Zusammenführung von pulvrigen bis körnigen Feststoffen mit flüssigen bzw. verflüssigbaren, insbesondere wässrigen, thermoplastischen oder plastischen Medien, die als Schlämmen bzw. Kalt- oder Heißmischgut Verwendung finden, in einem gegenläufig angetriebenen Zweiwellenmischer, bei dem die Aufgabe der Komponenten antriebsseitig und die Abgabe der Mischung andernends erfolgt, sowie eine Vorrichtung zur Ausübung dieses Verfahrens.The invention relates to a process for the continuous combination of powdery to granular solids with liquid or liquefiable, in particular aqueous, thermoplastic or plastic media, which are used as slurries or cold or hot mixes, in a counter-rotating twin-shaft mixer, in which the task of the components on the drive side and the discharge of the mixture takes place elsewhere, and a device for performing this method.
Wie bereits durch die eingangs gegebene Klassifikation bestätigt, eignen sich hierzu besonders Zweiwellenmischer, die in der Regel durch gegenläufige, unterbrochene Mischschnecken eine gute mischende Charakteristik und, in Verbindung mit einer der Aufgabeleistung entsprechenden Verweilzeit des Mischgutes, den gleichmäßig wirksamen Füllgrad des Mischtroges gewährleisten.As already confirmed by the classification given at the beginning, twin-shaft mixers are particularly suitable for this purpose, which generally ensure good mixing characteristics through opposing, interrupted mixing screws and, in conjunction with a residence time of the material to be mixed, ensure the uniformly effective filling level of the mixing trough.
Die Mischerwellen sind in der Regel mit jeweils drei in ihrer Wirkung schraubenbildend-fördernden Reihen von Mischblättern bestückt, wobei die Zahl der gleichmäßig über den Umfang und einen Teilabschnitt der Welle verteilten Mischblätter, ihr Anstellwinkel zur Mischerwelle und ihre Formgebung durch die zulösende Aufgabe bestimmt wird.The mixer shafts are usually equipped with three rows of mixing blades which promote screw formation, the number of mixing blades distributed evenly over the circumference and a section of the shaft, their angle of attack to the mixer shaft and their shape being determined by the task to be performed.
Die Drehrichtung der beiden parallel und gegenläufig angeordneten, mit Mischblättern bestückten Mischwellen, deren Arbeitsbereiche ineinandergreifen, ist dabei üblicherweise so bestimmt, daß das Gut mittig zwischen den beiden Mischerwellen hochgehoben und wieder auf dem Grund des Mischtroges, bei Vermengung der beiden Gutströme, zusammengeführt wird, um dann erneut erfaßt und nach oben gehoben zu werden, wobei die beiden Mischströme nach ihrem seitlichen Abfall, entlang der Trogwände und entsprechend dem durch die schraubenförmige Anordnung der Mischwerkzeuge bedingten Vorschub, in Richtung des Auslaufes transportiert werden.The direction of rotation of the two parallel and oppositely arranged mixing shafts equipped with mixing blades, whose working areas mesh, is usually determined in such a way that that the material is lifted up in the middle between the two mixer shafts and brought together again at the bottom of the mixing trough, when the two material flows are mixed, in order to then be detected again and lifted upwards, the two mixed flows after their lateral drop, along the trough walls and corresponding to the feed caused by the helical arrangement of the mixing tools, are transported in the direction of the outlet.
Grundsätzlich ist damit zu rechnen, daß sich das Fließverhalten des Mischgutes mit fortschreitendem Durchgang ändert, so daß die von den Mischwerkzeugen übertragbare Scherkraft auf das Mischgut langsam aber fortschreitend abnimmt.Basically, it can be expected that the flow behavior of the mixed material changes with the passage, so that the shear force that can be transmitted by the mixing tools to the mixed material slowly but gradually decreases.
Diese Vorbemerkungen berücksichtigend ist es Aufgabe dieser Erfindung, ein Verfahren nach der eingangs genannten Art zu definieren, das es erlaubt, eine optimale Scherkraft zwischen Mischwerkzeug und Mischgut im Endbereich der Mischschtrecke einzustellen, bei der die Quasi-Homogenität des Mischgutes ohne Entmischungserscheinungen mit geringster Leistungsaufnahme erhalten und das Gut in diesem Zustand der weiteren Bearbeitung zugeführt wird.Taking these preliminary remarks into account, it is the object of this invention to define a method according to the type mentioned at the outset, which makes it possible to set an optimal shear force between the mixing tool and the material to be mixed in the end region of the mixing section, in which the quasi-homogeneity of the material to be mixed is achieved without any signs of separation and with the lowest power consumption and the goods are passed on for further processing in this state.
Die erfindungsgemäße Lösung dieser Aufgabe sieht vor,
daß dem auf zubereitenden Mischgut mit kürzer werdender Länge der Restmischstrecke nur noch in einem solchen Maß Scherkräfte vermittelt werden, daß sie die Aufrechterhaltung der erreichbaren Quasi-Homogentiät gewährleisten.The solution to this problem according to the invention provides
that shear forces are only imparted to the mix to be prepared with a shorter length of the remaining mixing section to such an extent that they ensure the maintenance of the achievable quasi-homogeneity.
Zur Ausübung des Verfahrens wird eine Vorrichtung für die kontinuierliche Zusammenführung von pulvrigen bis körnigen Feststoffen mit flüssigen bzw. verflüssigten Medien, dessen zwei Wellen gegenläufig angetrieben und die Lage des Einlaufes der Komponenten antriebsseitig und die der Abgabe der Mischung andernends erfolgt, genannt.To carry out the method, a device for the continuous combination of powdery to granular solids with liquid or liquefied media, the two shafts of which are driven in opposite directions and the position of the inlet of the components on the drive side and that of the discharge of the mixture takes place elsewhere, is mentioned.
Die Lösung dieser Aufgabe zeichnet sich dadurch aus,
daß die Mischblätter zum Ende der durch den Auslauf begrenzten Mischstrecke hin in ihrem Anstellwinkel zu den Mischwellen auf einen Winkel von etwa 90°, d.h. auf eine Neutralstellung, zurückführbar sind, während in der Lage des Einlaufes der Medien die Mischblätter einen Anstellwinkel zur Richtung des Auslaufes von mindestens 45° einnehmen,
daß die beiden Wellen mit in 120°-Teilung versetzten Mischblättern so ausgerüstet sind, daß, ausgehend von der ersten in der Draufsicht von oben liegenden Welle, die senkrecht stehenden Mischblätter jeweils gleich in positivem oder negativem Abstand vor- oder nacheilend angeordnet sind, und
daß in diesem Abstand die Folgemischblâtter, ebenfalls jeweils in gleichem Abstand und in gleicher Teilung,
über die Restlänge der Wellen angeordnet sind, wobei das bei der ersten Welle senkrecht stehende erste mittlere Mischblatt und das mit 120° nach unten stehende erste Mischblatt der ersten Welle mit dem auf der gegenüberliegenden zweiten Welle senkrecht stehenden ersten mittleren Mischblatt und dem ersten mit 120° nach unten stehenden Mischblatt im Abstand korrespondieren.The solution to this problem is characterized by
that the mixing blades can be traced back to the mixing shafts to an angle of about 90 °, ie to a neutral position, at the end of the mixing section bounded by the outlet, while in the position of the inlet of the media the mixing blades have an angle of attack to the direction of the outlet take at least 45 °,
that the two shafts are equipped with mixing blades offset in 120 ° so that, starting from the first shaft lying in the top view from above, the vertical mixing blades are each arranged in a positive or negative distance leading or lagging, and
that at this distance the following mixed sheets, also at the same distance and in the same division,
are arranged over the remaining length of the shafts, the first middle mixing blade standing vertically in the first shaft and the first mixing blade standing 120 ° downward of the first shaft with the first middle mixing blade standing vertically on the opposite second shaft and the first 120 ° the mixing sheet below correspond at a distance.
Einer weiteren Erläuterung dieser für den Regelfall vorgeschlagenen Anordnung der Mischblätter bedarf es nicht.A further explanation of this arrangement of the mixing blades proposed for the rule of thumb is not required.
Es kann jedoch für den Einzelfall zweckmäßig sein, daß die Steigung einzelner Mischblätter zur Mischwelle umgekehrt eingestellt ist, und daß die eventuelle Zugabe und Eingabe von Additivs durch das Zurücknehmen des Anstellwinkels einzelner Blätter zeitlich erstreckt wird.However, it may be appropriate for the individual case that the incline of individual mixing blades to the mixing shaft is set the other way round, and that the possible addition and input of additives is extended in time by reducing the angle of attack of individual blades.
Ebenso ist es für die Verarbeitung zäher Massen fallweise zweckmäßig, die Grundform der Mischblätter umzukehren, so daß die Breitseite der Mischblätter den Mischerwellen zugeordnet ist.
Durch diese Maßnahme wird zwar die Förderleistung in Durchflußrichtung etwas reduziert, die Scherkräfte, insbesondere im Aufgabebereich des Gutes, jedoch massiert zur Geltung gebracht.Likewise, for the processing of viscous masses, it is occasionally advisable to reverse the basic shape of the mixing blades so that the broad side of the mixing blades is assigned to the mixer shafts.
Through this measure, the delivery rate in the flow direction is somewhat reduced, but the shear forces, particularly in the feed area of the material, are brought to bear in a massed manner.
Da die Umfangsgeschwindigkeit der Mischwellen in ihrem Zentrum gegen Null führt,
wird vorgeschlagen, daß als Mischwellen Rohre verwendet werden, deren Außenradien etwa ein Viertel der Innenradien des Mischtroges aufweisen.Since the peripheral speed of the mixing shafts leads towards zero in their center,
it is proposed that tubes are used as mixing shafts, the outer radii of which have about a quarter of the inner radii of the mixing trough.
Die vorliegende Erfindung erfüllt damit alle Anforderungen der Aufgabenstellung.The present invention thus fulfills all the requirements of the task.
Die Erfindung wird durch die beigefügten beispielsweisen Zeichnungen näher erläutert.
- Figur 1 zeigt in der Seitenansicht den Mischer für die kontinuierliche Zusammenführung von pulvrigen bis körnigen Feststoffen mit flüssigen bzw. verflüssigbaren Medien, mit der Lage des Antriebes, des Einlaufes und des Auslaufes.
Figur 2 zeigt im Grundriß den Mischer, wobei insbesondere der Abstand der Mischblätter zueinander, sowie ihre Anordnung und Verteilung um die Mischerwellen ausgewiesen ist.- Figur 3 zeigt einen Schnitt I-I aus
Figur 2. - Figur 4 zeigt die Anordnung eines einzelnen Mischblattes auf einem Abschnitt der Rohrwelle.
- Figure 1 shows a side view of the mixer for the continuous combination of powdery to granular solids with liquid or liquefiable media, with the position of the drive, the inlet and the outlet.
- Figure 2 shows the mixer in plan, in particular the distance of the mixing blades to each other, as well as their arrangement and distribution around the mixer shafts is shown.
- FIG. 3 shows a section II from FIG. 2.
- Figure 4 shows the arrangement of a single mixing blade on a section of the tubular shaft.
Die wirksame Troglänge des Mischers 1 ist durch die auf der Seite der Aufgabe 1.3 angeordnete Schottwand 1.1, sowie durch die Anordnung des Auslaufes 1.2 bestimmt.The effective trough length of the mixer 1 is determined by the bulkhead 1.1 arranged on the side of task 1.3 and by the arrangement of the outlet 1.2.
In dem vor der Schottwand 1.1 liegenden offenen Bereich des Mischtroges 1 ist der über eine Kupplung gegebene Stirnradantrieb 2 für die in der Schottwand 1.1 gelagerten, gegenläufig drehenden Mischerwellen 3.1/3.2 bestimmt, wobei diese Wellen Rohrwellen sind, deren Außenradien etwa ein Viertel der Innenradien des Mischtroges 1 aufweisen.In the open area of the mixing trough 1 lying in front of the bulkhead 1.1, the
Die beiden Mischerwellen 3.1/3.2 sind mit in 120°-Teilung versetzten Mischblättern 4 ausgerüstet. Hierbeiwerden, ausgehend von einer ersten, in der Draufsicht von oben liegenden Welle 3.1, die senkrecht stehenden Mischblätter 4 jeweils gleich in positivem oder negativem Abstand A/2, d.h. voroder nacheilend, entsprechend der Teilung angeordnet.The two mixer shafts 3.1 / 3.2 are equipped with mixing blades 4 offset in 120 ° division. Here, starting from a first shaft 3.1 lying in the plan view from above, the perpendicular mixing blades 4 are each equally at a positive or negative distance A / 2, i.e. before or after, arranged according to the division.
Die Mischblätter 4 weisen in etwa einen trapezförmigen Querschnitt auf, die in mit den Rohrwellen 3.1/3.2 verschweißten Stellringen,üblicherweise an ihrer Schmalseite, gelagert sind, wobei allerdings auch vorgesehen werden kann, daß anstelle der Schmalseite des Mischblattes 4 dieses auch mit seiner Breitseite an einem entsprechend angeordneten Zapfen verstellt werden kann.The mixing blades 4 have an approximately trapezoidal cross-section, which are mounted in adjusting rings welded to the tubular shafts 3.1 / 3.2, usually on their narrow side, although it can also be provided that instead of the narrow side of the mixing blade 4, this also has its broad side a correspondingly arranged pin can be adjusted.
Unabhängig davon ist die Zurücknahme des Anstellwinkels in Förderrichtung der einzelnen Blätter 4 jederzeit möglich, um so für die separate Zugabe einzelner Additivs eine zeitliche Erstreckung zu erreichen.Irrespective of this, the setting angle in the conveying direction of the individual blades 4 can be withdrawn at any time in order to extend the time for the separate addition of individual additives.
Claims (5)
daß dem aufzubereitenden Mischgut mit kürzer werdender Länge der Restmischstrecke nur noch in einem solchen Maß Scherkräfte vermittelt werden, daß sie die Aufrechterhaltung der erreichbaren Quasi-Homogenität gewährleisten.1. Process for the continuous merging of powdery to granular solids with liquid or liquefiable, in particular aqueous, thermoplastic or plastic media, which are used as slurries or cold or hot mixes, in a counter-rotating twin-shaft mixer, in which the task of the components (1.3) on the drive side and the mixture (1.2) is dispensed on the other side, characterized in that
that the mixed material to be processed with the length of the remaining mixing section becoming shorter is only imparted shear forces to such an extent that they ensure the maintenance of the achievable quasi-homogeneity.
daß die Mischblätter (4) zum Ende der durch den Auslauf (1.2) begrenzten Mischstrecke hin in ihrem Anstellwinkel zu den Mischwellen (3.1/3.2) auf einen Winkel von etwa 90°, d.h. auf eine Neutralstellung, zurückführbar sind, während in der Lage des Einlaufes (1.3) der Medien die Mischblätter (4) einen Anstellwinkel zur Richtung des Auslaufes (1.2) von mindestens 45° einnehmen,
daß die beiden Wellen (3.1/3.2) mit in 120°-Teilung versetzten Mischblättern (4) so ausgerüstet sind, daß, ausgehend von der ersten in der Draufsicht von oben liegenden Welle (3.1), die senkrecht stehenden Mischblätter (4) jeweils gleich in positivem oder negativem Abstand (A/2) vor-oder nacheilend angeordnet sind, und
daß in diesem Abstand (A/2) die Folgemischblätter (4), ebenfalls jeweils in gleichem Abstand und in gleicher Teilung, über die Restlänge der Wellen (3.1/3.2) angeordnet sind, wobei das bei der ersten Welle (3.1) senkrecht stehende erste mittlere Mischblatt (4) und das mit 120° nach unten stehende erste Mischblatt der ersten Welle (3.1) mit dem auf der gegenüberliegenden zweiten Welle (3.2) senkrecht stehenden ersten mittleren Mischblatt (4) und dem ersten mit 120° nach unten stehenden Mischblatt (4) im Abstand korrespondieren.2. Device for the continuous merging of powdery to granular solids with liquid or liquefied media, the two shafts (3.1 / 3.2) driven in opposite directions and the position of the inlet (1.3) of the components on the drive side and that of the discharge (1.2) of the mixture at the other end done, characterized,
that the mixing blades (4) towards the end of the mixing section bounded by the outlet (1.2) The angle of attack of the mixing shafts (3.1 / 3.2) can be traced back to an angle of approximately 90 °, ie to a neutral position, while in the position of the inlet (1.3) of the media, the mixing blades (4) have an angle of attack to the direction of the outlet ( 1.2) take at least 45 °,
that the two shafts (3.1 / 3.2) are equipped with mixing blades (4) offset in 120 ° division so that, starting from the first shaft (3.1) lying in the top view, the vertical mixing blades (4) are each the same are arranged at a positive or negative distance (A / 2) leading or lagging, and
that at this distance (A / 2) the subsequent mixing blades (4), also each at the same distance and in the same division, are arranged over the remaining length of the shafts (3.1 / 3.2), the first standing vertically in the first shaft (3.1) middle mixing blade (4) and the first mixing blade of the first shaft (3.1) standing 120 ° down with the first middle mixing blade (4) standing vertically on the opposite second shaft (3.2) and the first mixing blade standing 120 ° down ( 4) correspond in distance.
daß die Steigung einzelner Mischblätter (4) zur Mischwelle (3.1/3.2) umgekehrt eingestellt ist, und diese etwa trapezförmig sind, und
daß die eventuelle Zugabe und Eingabe von Additivs durch das Zurücknehmen des Anstellwinkels einzelner Blätter (4) zeitlich erstreckt wird.3. Device according to claim 2, characterized in that
that the pitch of individual mixing blades (4) to the mixing shaft (3.1 / 3.2) is set in reverse, and these are approximately trapezoidal, and
that the eventual addition and input of additives is extended by reducing the angle of attack of individual blades (4).
daß die Grundform der Mischblätter (4) umkehrbar ist, so daß die Breitseite der Blätter (4) den Mischerwellen (3.1/3.2) zugeordnet ist.4. Apparatus according to claim 2 and 3, characterized in
that the basic shape of the mixing blades (4) is reversible, so that the broad side of the blades (4) is assigned to the mixer shafts (3.1 / 3.2).
daß als Mischwellen (3.1/3.2) Rohre verwendet werden, deren Außenradien etwa ein Viertel der Innenradien des Mischtroges (1) aufweisen.5. The device according to claim 2, characterized in
that pipes are used as mixing shafts (3.1 / 3.2), the outer radii of which have about a quarter of the inner radii of the mixing trough (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP89108657A EP0397894A1 (en) | 1989-05-13 | 1989-05-13 | Method for continuously bringing together solid powdery or granular materials, and device for carrying out the method |
| DD90339809A DD293736A5 (en) | 1989-05-13 | 1990-04-17 | METHOD FOR THE CONTINUOUS COMBINATION OF PULVERS TO SOLID SOLIDS, AND A DEVICE FOR EXERCISING THIS METHOD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP89108657A EP0397894A1 (en) | 1989-05-13 | 1989-05-13 | Method for continuously bringing together solid powdery or granular materials, and device for carrying out the method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0397894A1 true EP0397894A1 (en) | 1990-11-22 |
Family
ID=8201359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89108657A Withdrawn EP0397894A1 (en) | 1989-05-13 | 1989-05-13 | Method for continuously bringing together solid powdery or granular materials, and device for carrying out the method |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0397894A1 (en) |
| DD (1) | DD293736A5 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2051157A1 (en) * | 1991-08-08 | 1994-06-01 | Bituminosos S A Probisa Prod | Process and apparatus for the dispersion and proportioning of fibers used in the building sector in general |
| WO2004101126A1 (en) * | 2003-05-13 | 2004-11-25 | Lurgi Lentjes Ag | Mixing device |
| DE102014218463A1 (en) * | 2014-09-15 | 2016-03-17 | Gebrüder Lödige Maschinenbau GmbH | Mixing device for industrial applications |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE254388C (en) * | ||||
| GB2030463A (en) * | 1978-09-21 | 1980-04-10 | Risco Brevetti | Mixer for meat and food products in general |
| US4281934A (en) * | 1978-09-12 | 1981-08-04 | Ulrich Krause | Apparatus for mixing construction materials |
| DE3202588A1 (en) * | 1982-01-27 | 1983-08-04 | Helmut 2905 Edewecht Noss | Mixing device for making meat and sausage products |
-
1989
- 1989-05-13 EP EP89108657A patent/EP0397894A1/en not_active Withdrawn
-
1990
- 1990-04-17 DD DD90339809A patent/DD293736A5/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE254388C (en) * | ||||
| US4281934A (en) * | 1978-09-12 | 1981-08-04 | Ulrich Krause | Apparatus for mixing construction materials |
| GB2030463A (en) * | 1978-09-21 | 1980-04-10 | Risco Brevetti | Mixer for meat and food products in general |
| DE3202588A1 (en) * | 1982-01-27 | 1983-08-04 | Helmut 2905 Edewecht Noss | Mixing device for making meat and sausage products |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2051157A1 (en) * | 1991-08-08 | 1994-06-01 | Bituminosos S A Probisa Prod | Process and apparatus for the dispersion and proportioning of fibers used in the building sector in general |
| WO2004101126A1 (en) * | 2003-05-13 | 2004-11-25 | Lurgi Lentjes Ag | Mixing device |
| US7677788B2 (en) | 2003-05-13 | 2010-03-16 | Lurgi Lentjes Ag | Curved blade mixing device |
| DE102014218463A1 (en) * | 2014-09-15 | 2016-03-17 | Gebrüder Lödige Maschinenbau GmbH | Mixing device for industrial applications |
Also Published As
| Publication number | Publication date |
|---|---|
| DD293736A5 (en) | 1991-09-12 |
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