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EP1273341B1 - Device for vertical mixing - Google Patents

Device for vertical mixing Download PDF

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Publication number
EP1273341B1
EP1273341B1 EP01115708A EP01115708A EP1273341B1 EP 1273341 B1 EP1273341 B1 EP 1273341B1 EP 01115708 A EP01115708 A EP 01115708A EP 01115708 A EP01115708 A EP 01115708A EP 1273341 B1 EP1273341 B1 EP 1273341B1
Authority
EP
European Patent Office
Prior art keywords
mixer
product
outlet
mixing
shaft
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.)
Expired - Lifetime
Application number
EP01115708A
Other languages
German (de)
French (fr)
Other versions
EP1273341A1 (en
Inventor
Heinz Binder
Andrea Hermsmeyer
Philipp Hanimann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Buehler AG
Original Assignee
Buehler AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to AT01115708T priority Critical patent/ATE302054T1/en
Priority to EP01115708A priority patent/EP1273341B1/en
Priority to DK01115708T priority patent/DK1273341T3/en
Priority to DE50107118T priority patent/DE50107118D1/en
Priority to ES01115708T priority patent/ES2248199T3/en
Application filed by Buehler AG filed Critical Buehler AG
Priority to CNB01120351XA priority patent/CN100525894C/en
Priority to US09/973,811 priority patent/US6789935B2/en
Publication of EP1273341A1 publication Critical patent/EP1273341A1/en
Application granted granted Critical
Publication of EP1273341B1 publication Critical patent/EP1273341B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B01F27/906—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms  with fixed axis
    • 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
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/45—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor
    • B01F35/452—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor by moving them in the plane of the opening
    • B01F35/4521—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor by moving them in the plane of the opening by rotating them about an axis perpendicular to the plane of the opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/751—Discharging by opening a gate, e.g. using discharge paddles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/06—Mixing of food ingredients
    • 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
    • B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
    • 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
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
    • 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
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/2122—Hollow shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles
    • B01F35/52—Receptacles with two or more compartments

Definitions

  • the invention relates to a device for vertical mixing of liquid, gaseous, powdery and / or pasty products with a arranged in a housing Mixing tool, with at least one inlet for the products to be mixed, with at least one outlet and at least one drive.
  • Such mixing methods or devices are used, for example, in the animal feed industry applied. They serve, in particular, gaseous, liquid, granular, pulverulent, floury and / or pasty substances of very different viscosity with each other to mix, in particular the most different types of animal feed, which Molasses, fats, etc. are added.
  • Such a mixer has become known from US-3,415,494. There is a vertical one Mixer with a housing and described with a paddle mixing device described. The product to be mixed is added to the mixer from above and discharged laterally after the batchwise mixing process.
  • DE-A1 41 27 873 discloses a kneading device for mass to be kneaded, in particular Sourdough by means of a vertical mixer.
  • This mixer has a shaft Ristorstangen on and on the container inner wall stator rods are arranged, the interact with these rotor bars.
  • the kneading device has a fill level control on and for the discharge of the kneaded product, a pump is needed. A free-flowing discharge of the product is obviously not possible.
  • a continuous mixer for washing gravel and the like according to US-PS 3,845,905 with the contamination of gravel before a washing or sieving process should be mechanically separated. To loosen up the material are Stirring pairs are provided in the catchment area and the passage of the gravel is made exclusively gravity.
  • a stirrer is vertically arranged in a mixing chamber, whose Upper impellers push the introduced water downwards and the bottommost impeller suitable to move the water in the opposite direction.
  • the mixing blades are not adjustable, but fixed in its shape and arrangement and the discharge of the Emulsions take place through an opening in the ceiling area of the mixing device.
  • the invention is therefore based on the object to propose a device at det the mixing process with the lowest energy consumption, an optimal mix Addition of liquids of various viscosity and a batch-free, i. continuous Mixing done.
  • This object is achieved by a device in which the mixer is fully filled in the operating state, the mixed product by means of at least one Mixing tool (At least one of them backwards promoting) on the one hand in the direction of the inner wall of the housing is pressed and the other is conveyed upwards, the Mixed product due to the product pressure required by the above mixing tools Product column is steadily pumped down and in this way with the Blending tools a shear field is constructed (alternatively or additionally, the Product pressure can also be built up via an (additional) pressure device), the Product flow, from the inlets of the products to be mixed to the Outlet of the product to be mixed is carried out continuously, the starting materials constantly introduced into the mixer and the flow of the starting materials by means of a product discharge device provided at the outlet can be metered in a controllable manner.
  • the at least one mixing tool is arranged on a rotating shaft. Preferably is arranged at this also at the outlet a product discharge device.
  • the operating principle of the mixer according to the invention is that it is made of the full product stream is working, i. the mixer interior is always full.
  • the mixing product to be mixed which reaches the area of the mixing tools, is set in a rotational movement and against the inner wall of the mixer housing pressed, e.g. Paddle of the mixing tool on reverse conveying at least are partially set, i. opposite to the product flow, resulting in a shear field builds.
  • the vaporous, liquid or pasty additions are above the first (seen from the top in the product flow), for example paddle-shaped Mixing tools or at the level of the same introduced and mixed with the product offset in the direction of rotation.
  • the liquid or pasty additions are always passed into the product, as the mixer interior always filled.
  • the throughput is regulated.
  • a continuous, i. dosable Ensures mixing process. It is thereby possible a self-dosing.
  • the addition Steam can be done with the spout closed.
  • the mixer is This can be connected directly to a feed cube press or to an expander.
  • the product closure upwards has a positive effect on the temperature. This allows for example when used with flour high temperatures with less Humidity.
  • the upper part of the mixer interior is always filled. Another, associated advantage is that a contamination of the inlet part is excluded.
  • the 100% degree of filling allows the use of shear forces. At the same time, it works Product pressure from the product column required above the mixing tools. Alternatively or additionally, the product pressure may also be via an additional printing device being constructed. The promotion of the product can also be by gravity in reverse conveying mixing tools, e.g. Paddling, done.
  • the mixer is characterized by a very simple construction.
  • the mixer is very easy to wait. It can be opened within a few seconds. A Isolation or heating is thus very easy to implement. Otherwise works the mixer is vibration-free.
  • the advantages associated with the device are in particular that after the flow principle is used and the degree of filling is always the same. This makes possible a better mixing of the liquids or the viscous pastes in the dry Product.
  • the mixer is less polluted, which greatly simplifies cleaning and temperature detection is more accurate.
  • An essential advantage of the device is that the products to be mixed can be sanitized by the addition of steam.
  • a feed of the mixer from several silo cells is possible.
  • the feed cube press or the expander can be controlled load-dependent. Because of the exact Temperature determination in the mixer, the feed cube press or the expander with be approached predetermined setpoint temperatures. A dosing with frequency control eliminated. Furthermore omitted when using this inventive Mischers bonding in the area of the inlet of the feed die presses or the Expander. If it should come to the Futterschulfelpressenetzstau, without mixer emptying continue driving straight away. Especially with the addition of molasses, although even cold molasses is possible, little sticking or clumping occur on.
  • Fig. 1 shows a schematic representation of a section through the inventive Mixing device.
  • the mixer 1 comprises a housing 6 with an inlet 7 and an outlet 8. Within the housing 8 is a hollow shaft 2, in which a another wave 3 is located. On the hollow shaft 2 are the paddle-shaped Attached mixing tools 4. The hollow shaft 2 and the inner shaft 3 are by means of a Driven drive 13 via a belt overdrive 12. Below the outlet 8 is a connected to the inner shaft 3 rotary valve 9 is provided. Above and in the Area of the paddle-shaped mixing tools 4 are supply points 10 for gases, liquids and / or pasty products arranged. In the operating state of the mixer is the interior 5 is filled to the top with product, so that the 10 via the addition points incorporated products, e.g. Molasses, water and / or steam directly into the product 11 can be initiated. The product to be mixed is from the paddles 4 on pressed the wall. The paddles 4 are partially set to backward promotion, i.e. against the product stream.
  • the product to be mixed
  • Fig. 2 the lower part of the mixer is in another preferred embodiment shown.
  • the reference numerals are the same as in Fig. 1.
  • the bottom of the mixer housing 6 is an opening 14 attached, which depends on the rotary valve of the desired Dosing is closed or open.
  • the rotary valve 9 which is arranged on the inner shaft 3, via a belt overdrive 12 (see FIG. 1) connected to the speed-dependent control of the dosage with the hollow shaft 2 or be driven separately.
  • the separate drive of the inner shaft 3 with the rotary valve 9 is not shown in the drawing.
  • Above the opening 14 is within the housing 6 an intermediate bottom 15 is provided, which opens the opening 14 from the top shielding by flowing product.
  • the intermediate bottom 15 has opposite to Opening 14 an opening 16.
  • the speed range of the mixing is 200 rpm to 1000 rpm, preferably approx. 250 rpm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Confectionery (AREA)

Abstract

Process for operating a vertical mixer for vaporous, liquid, powdered and pasty products comprises completely filling the mixer in the operating state; forming a shearing field in the mixed product and in the product stream using a mixing tool; and allowing the product to flow from the inlets to the outlet. Process for operating a vertical mixer for vaporous, liquid, powdered and/or pasty products comprises completely filling the mixer (1) in the operating state; forming a shearing field in the mixed product (11) and in the product stream using a mixing tool; and allowing the product to flow from the inlets (10) to the outlet (8). The starting products are continuously introduced into the mixer and the flow of starting products is controlled at the outlet. An Independent claim is also included for a device for carrying out the process comprising paddles (4) arranged on a hollow shaft (2) and an inner shaft (3) arranged within the shaft for a slide (9) provided on the outlet. Preferred Features: The mixing tool operates against the product stream. The mixer is connected to an extruder, dicing press or expander. The mixer is arranged before or after a batch mixer. The mixed product is pressed in the direction of the inner wall of the housing using the mixing tool.

Description

Die Erfindung betrifft eine Vorrichtung zum vertikalen Mischen von flüssigen, gasförmigen, pulverförmigen, und/oder pastösen Produkten mit einem in einem Gehäuse angeordneten Mischwerkzeug, mit mindestens einem Einlass für die zu mischenden Produkte, mit mindestens einem Auslass und mit mindestens einem Antrieb.The invention relates to a device for vertical mixing of liquid, gaseous, powdery and / or pasty products with a arranged in a housing Mixing tool, with at least one inlet for the products to be mixed, with at least one outlet and at least one drive.

Derartige Mischverfahren bzw. -vorrichtungen werden beispielsweise in der Futtermittelindustrie angewandt. Sie dienen insbesondere dazu, gasförmige, flüssige, körnige, pulverförmige, mehlige und/oder pastenförmige Stoffe verschiedenster Viskosität miteinander zu vermischen, insbesondere die verschiedensten Arten von Futtermitteln, denen Melasse, Fette usw. zugesetzt werden.Such mixing methods or devices are used, for example, in the animal feed industry applied. They serve, in particular, gaseous, liquid, granular, pulverulent, floury and / or pasty substances of very different viscosity with each other to mix, in particular the most different types of animal feed, which Molasses, fats, etc. are added.

Ein derartiger Mischer ist aus der US-3,415,494 bekannt geworden. Dort ist ein vertikaler Mischer mit einem Gehäuse und einem, mit Paddeln versehenen Mischorgan beschrieben. Das zu vermischende Produkt wird von oben dem Mischer zugegeben und nach dem chargenweise ablaufenden Mischvorgang unten seitlich ausgetragen.Such a mixer has become known from US-3,415,494. There is a vertical one Mixer with a housing and described with a paddle mixing device described. The product to be mixed is added to the mixer from above and discharged laterally after the batchwise mixing process.

Die DE- A1 41 27 873 offenbart eine Kneteinrichtung für zu knetende Masse, insbesondere Sauerteig mittels eines vertikalen Mischers. Dieser Mischer weist eine Welle mit Rctorstangen auf und an der Behälterinnenwand sind Statorstangen angeordnet, die mit diesen Rotorstangen zusammen wirken. Die Kneteinrichtung weist eine Füllstandshöhenregelung auf und zum Austrag des gekneteten Produktes wird eine Pumpe benötigt. Ein frei fliessender Austrag des Produktes ist offensichtlich nicht möglich.DE-A1 41 27 873 discloses a kneading device for mass to be kneaded, in particular Sourdough by means of a vertical mixer. This mixer has a shaft Ristorstangen on and on the container inner wall stator rods are arranged, the interact with these rotor bars. The kneading device has a fill level control on and for the discharge of the kneaded product, a pump is needed. A free-flowing discharge of the product is obviously not possible.

Bekannt ist weiterhin ein Durchlaufmischer zum Waschen von Kies u.dgl. gemäss US-PS 3,845,905 mit der Verunreinigungen von Kies vor einem Waschvorgang bzw. Siebvorgang mechanisch abgeschieden werden sollen. Zur Auflockerung des Materials sind im Einzugsbereich Rührpaare vorgesehen und der Durchlauf des Kieses erfolgt ausschliesslich schwerkraftbedingt. Bei einer Mischeinrichtung gemäss US-PS-4,155,657 für Emulsionen, ist in einer Mischkammer ein Rührwerk vertikal angeordnet, dessen obere Rührflügel das eingebrachte Wasser nach unten drücken und der unterste Rührflügel geeignet ist, das Wasser in die Gegenrichtung zu bewegen. Die Mischflügel sind nicht einstellbar, sondern in ihrer Formgebung und Anordnung fix und der Austrag der Emulsionen erfolgt durch eine Öffnung im Deckenbereich der Mischeinrichtung.Also known is a continuous mixer for washing gravel and the like. according to US-PS 3,845,905 with the contamination of gravel before a washing or sieving process should be mechanically separated. To loosen up the material are Stirring pairs are provided in the catchment area and the passage of the gravel is made exclusively gravity. In a mixing device according to US-PS-4,155,657 for emulsions, a stirrer is vertically arranged in a mixing chamber, whose Upper impellers push the introduced water downwards and the bottommost impeller suitable to move the water in the opposite direction. The mixing blades are not adjustable, but fixed in its shape and arrangement and the discharge of the Emulsions take place through an opening in the ceiling area of the mixing device.

Je nach der Art der zu vermischenden Produkte kann bei den bisher bekannten Mischern ein hoher Energiebedarf anfallen. Weiterhin muss mit einem Blockieren der Maschinen gerechnet werden. Im übrigen ist das Einmischen von Flüssigkeiten in den Mischer wegen des verschiedenen Füllgrades nicht optimal möglich.Depending on the nature of the products to be mixed can in the previously known mixers a high energy requirement. Furthermore, having to block the machines be counted. Incidentally, the mixing of liquids in the mixer not optimally possible because of the different degree of filling.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung vorzuschlagen, bei det der Mischvorgang mit geringstem Energiebedarf, einer optimalen Mischung bei Zugabe von Flüssigkeiten verschiedenster Viskosität und ein chargenfreies, d.h. kontinuierliches Mischen erfolgt.The invention is therefore based on the object to propose a device at det the mixing process with the lowest energy consumption, an optimal mix Addition of liquids of various viscosity and a batch-free, i. continuous Mixing done.

Diese Aufgabe wird erfindungsgemäss durch eine Vorrichtung gelöst, bei der der Mischer im Betriebszustand voll gefüllt ist, das Mischprodukt mittels mindestens eines Mischwerkzeuges (mindestens eines davon rückwärtsfördernd) zum einen in Richtung Innenwand des Gehäuses gedrückt wird und zum anderen nach oben gefördert wird, das Mischprodukt aufgrund des Produktdruckes, von der oberhalb der Mischwerkzeuge erforderlichen Produktsäule stetig nach unten gefördert wird und auf diese Art mit den Mischwerkzeugen ein Scherfeld aufgebaut wird (alternativ oder zusätzlich kann der Produktdruck auch über eine (zusätzliche) Druckeinrichtung aufgebaut werden), der Produktfluss, ausgehend von den Einlässen der zu vermischenden Produkte bis zum Auslass des zu vermischenden Produktes kontinuierlich erfolgt, wobei die Ausgangsprodukte ständig in den Mischer eingebracht und der Fluss der Ausgangsprodukte mittels einer am Auslass vorgesehenen Produktaustragseinrichtung dosierbar regelbar ist.This object is achieved by a device in which the mixer is fully filled in the operating state, the mixed product by means of at least one Mixing tool (At least one of them backwards promoting) on the one hand in the direction of the inner wall of the housing is pressed and the other is conveyed upwards, the Mixed product due to the product pressure required by the above mixing tools Product column is steadily pumped down and in this way with the Blending tools a shear field is constructed (alternatively or additionally, the Product pressure can also be built up via an (additional) pressure device), the Product flow, from the inlets of the products to be mixed to the Outlet of the product to be mixed is carried out continuously, the starting materials constantly introduced into the mixer and the flow of the starting materials by means of a product discharge device provided at the outlet can be metered in a controllable manner.

Das mindestens eine Mischwerkzeug ist an einer rotierenden Welle angeordnet. Vorzugsweise ist an dieser auch am Auslass eine Produktaustragseinrichtung angeordnet.The at least one mixing tool is arranged on a rotating shaft. Preferably is arranged at this also at the outlet a product discharge device.

Das Funktionsprinzip des erfindungsgemässen Mischers besteht darin, dass dieser aus dem vollen Produktstrom arbeitet, d.h. der Mischerinnenraum ist immer vollgefüllt. Das zu vermischende Mischprodukt, welches in den Bereich der Mischwerkzeuge gelangt, wird in eine Drehbewegung versetzt und gegen die Innenwand des Mischergehäuses gedrückt, wobei z.B. Paddel des Mischwerkzeuges auf Rückwärtsförderung zumindest teilweise gestellt sind, d.h. entgegengesetzt zum Produktstrom, sodass sich ein Scherfeld aufbaut. Die dampfförmigen, flüssigen bzw. pastösen Zugaben werden oberhalb der ersten (im Produktstrom gesehen von oben), beispielsweise paddelförmig ausgebildeten Mischwerkzeugen oder auf Höhe derselben eingeleitet und mit dem Mischprodukt in Drehrichtung versetzt. Durch die Differenzgeschwindigkeit der einzelnen Partikel, die sich von innen nach aussen verändert, wird der Flüssigkeitsstrom aufgerissen, und die Vermischung setzt ein. Es erfolgt hierbei eine Dichtezunahme in Richtung der Gehäusewand. Begünstigend kann auch der Aufbau eines Scherfeldes durch die Vorwärtsförderung wirken, bzw. durch die Schwerkraft (des Produktes) und die Rückwärtsförderung (der Mischwerkzeuge). The operating principle of the mixer according to the invention is that it is made of the full product stream is working, i. the mixer interior is always full. The mixing product to be mixed, which reaches the area of the mixing tools, is set in a rotational movement and against the inner wall of the mixer housing pressed, e.g. Paddle of the mixing tool on reverse conveying at least are partially set, i. opposite to the product flow, resulting in a shear field builds. The vaporous, liquid or pasty additions are above the first (seen from the top in the product flow), for example paddle-shaped Mixing tools or at the level of the same introduced and mixed with the product offset in the direction of rotation. Due to the differential speed of each particle, the When it changes from the inside to the outside, the liquid flow is torn open, and the Mixing begins. In this case, there is an increase in density in the direction of the housing wall. Favoring can also be the structure of a shear field by the Forward feed, or through the force of gravity (of the product) and the Backward conveying (mixing tools).

Die flüssigen bzw. pastösen Zugaben werden immer in das Produkt geleitet, da der Mischerinnenraum immer gefüllt ist. Mit der angeordneten Produktaustragsvorrichtung wird zugleich der Durchsatz geregelt. Somit ist ein kontinuierlicher, d.h. dosierbarer Mischprozess gewährleistet. Es wird dadurch eine Selbstdosierung ermöglicht. Die Zugabe von Dampf kann bei geschlossenem Auslaufschieber erfolgen. Der Mischer ist dadurch unmittelbar an einer Futterwürfelpresse oder an einem Expander anschliessbar. Der Produktabschluss nach oben wirkt sich positiv auf die Temperatur aus. Dies ermöglicht beispielsweise bei Anwendung mit Mehl hohe Temperaturen mit geringer Feuchtigkeit. Der obere Teil des Mischerinnenraumes bleibt immer gefüllt. Ein weiterer, damit verbundener Vorteil besteht darin, dass eine Verschmutzung des Einlaufteiles ausgeschlossen ist.The liquid or pasty additions are always passed into the product, as the mixer interior always filled. With the arranged product discharge device At the same time the throughput is regulated. Thus, a continuous, i. dosable Ensures mixing process. It is thereby possible a self-dosing. The addition Steam can be done with the spout closed. The mixer is This can be connected directly to a feed cube press or to an expander. The product closure upwards has a positive effect on the temperature. This allows for example when used with flour high temperatures with less Humidity. The upper part of the mixer interior is always filled. Another, associated advantage is that a contamination of the inlet part is excluded.

Der 100%ige Füllgrad ermöglicht eine Nutzung von Scherkräften. Zugleich wirkt der Produktdruck von der, oberhalb der Mischwerkzeuge erforderlichen Produktsäule. Altemativ oder zusätzlich kann der Produktdruck auch über eine zusätzliche Druckeinrichtung aufgebaut werden. Die Förderung des Produktes kann auch durch die Schwerkraft bei rückwärts fördernden Mischwerkzeugen, z.B. Paddeln, erfolgen.The 100% degree of filling allows the use of shear forces. At the same time, it works Product pressure from the product column required above the mixing tools. Alternatively or additionally, the product pressure may also be via an additional printing device being constructed. The promotion of the product can also be by gravity in reverse conveying mixing tools, e.g. Paddling, done.

Der Mischer zeichnet sich durch eine sehr einfache Konstruktion aus. Der Mischer ist sehr leicht zu warten. Er kann innerhalb von wenigen Sekunden geöffnet werden. Eine Isolation oder eine Beheizung ist dadurch sehr einfach realisierbar. Im übrigen arbeitet der Mischer vibrationsfrei.The mixer is characterized by a very simple construction. The mixer is very easy to wait. It can be opened within a few seconds. A Isolation or heating is thus very easy to implement. Otherwise works the mixer is vibration-free.

Die mit der Vorrichtung verbundenen Vorteile liegen insbesondere darin, dass nach dem Durchlaufprinzip gearbeitet wird und der Füllgrad immer gleich ist. Dies ermöglicht eine bessere Einmischung der Flüssigkeiten bzw. der viskosen Pasten in das trockene Produkt. Der Mischer wird weniger verschmutzt, was die Reinigung sehr vereinfacht und eine Temperaturerfassung ist genauer. Ein wesentlicher Vorteil der Vorrichtung besteht darin, dass die zu vermischenden Produkte durch die Zugabe von Dampf hygienisiert werden können. The advantages associated with the device are in particular that after the flow principle is used and the degree of filling is always the same. this makes possible a better mixing of the liquids or the viscous pastes in the dry Product. The mixer is less polluted, which greatly simplifies cleaning and temperature detection is more accurate. An essential advantage of the device is that the products to be mixed can be sanitized by the addition of steam.

Ein Blockieren der Maschine ist unmöglich. Auch ist der Energiebedarf gegenüber Mischern des Standes der Technik stark reduziert. Weiterhin sind erhebliche Vorteile in der Anwendung des erfindungsgemässen Mischers bei Futterwürfelpressen, Expandern oder Batchmischem gegeben.Blocking the machine is impossible. Also, the energy needs compared to mixers of the prior art greatly reduced. Furthermore, considerable advantages in the application of the inventive mixer given in feed cube presses, expanders or batch mixers.

Eine Speisung des Mischers aus mehreren Silozellen ist möglich. Die Futterwürfelpresse bzw. der Expander kann lastabhängig gesteuert werden. Wegen der genauen Temperaturermittlung im Mischer kann die Futterwürfelpresse bzw. der Expander mit vorgegebenen Sollwert-Temperaturen angefahren werden. Ein Dosieren mit Frequenzsteuerung entfällt. Weiterhin entfallen bei Anwendung dieses erfindungsgemässen Mischers Verklebungen im Bereich des Einlaufes der Futterwürfelpressen bzw. der Expander. Falls es zum Futterwürfelpressenaufstau kommen sollte, kann ohne Mischerentleerung direkt weitergefahren werden. Insbesondere bei Zugabe von Melasse, wobei sogar kalte Melasse möglich ist, treten wenig Verklebungen bzw. Verklumpungen auf.A feed of the mixer from several silo cells is possible. The feed cube press or the expander can be controlled load-dependent. Because of the exact Temperature determination in the mixer, the feed cube press or the expander with be approached predetermined setpoint temperatures. A dosing with frequency control eliminated. Furthermore omitted when using this inventive Mischers bonding in the area of the inlet of the feed die presses or the Expander. If it should come to the Futterwürfelpressenaufstau, without mixer emptying continue driving straight away. Especially with the addition of molasses, although even cold molasses is possible, little sticking or clumping occur on.

Weiterhin ist auch die Beigabe von Flüssigkeiten nach dem Mischer möglich. Es ist keine Dosierung erforderlich. Eine Richtungsänderung des Mischproduktes nach dem Mischer, etwa von vertikaler in horizontaler Richtung, ist problemlos möglich. Eine Entmischung findet beim Auslaufen nicht statt. Eine Knollenbildung wird vermieden. Im übrigen sind alle Anwendungen des erfindungsgemässen Mischers denkbar, wie z.B. die Verwendung als Dosierer, die Beigabe des Mischproduktes in warmes Mehl, sowie die Zugabe von Fett bzw. Flüssigkeiten auf Pellets nach einer Futterwürfelpresse.Furthermore, the addition of liquids after the mixer is possible. It is not Dosage required. A change of direction of the mixed product after the mixer, from vertical to horizontal, is easily possible. A demix does not take place when leaving. Tuber formation is avoided. Furthermore all applications of the mixer according to the invention are conceivable, e.g. the Use as a dosing, the addition of the mixed product in warm flour, and the Adding fat or liquids to pellets after a feed cube press.

Ein bevorzugtes Ausführungsbeispiel der Erfindung ist anhand der Zeichnung dargestellt. Es zeigen die:

Fig. 1
eine schematische Darstellung des Mischers
Fig. 2
den unteren Teil des Mischers.
A preferred embodiment of the invention is illustrated by the drawing. It show the:
Fig. 1
a schematic representation of the mixer
Fig. 2
the lower part of the mixer.

Die Fig. 1 zeigt in schematischer Darstellung einen Schnitt durch die erfindungsgemässe Mischvorrichtung. Der Mischer 1 umfasst ein Gehäuse 6 mit einem Einlass 7 und einem Auslass 8. Innerhalb des Gehäuses 8 ist eine Hohlwelle 2, in der sich eine weitere Welle 3 befindet, angeordnet. An der Hohlwelle 2 sind die paddelförmigen Mischwerkzeuge 4 befestigt. Die Hohlwelle 2 und die innere Welle 3 werden mittels eines Antriebes 13 über ein Riemen-Übertrieb 12 angetrieben. Unterhalb des Auslasses 8 ist ein mit der Innenwelle 3 verbundener Drehschieber 9 vorgesehen. Oberhalb und im Bereich der paddelförmigen Mischwerkzeuge 4 sind Zugabestellen 10 für Gase, Flüssigkeiten und/oder pastöse Produkte angeordnet. Im Betriebszustand des Mischers ist der Innenraum 5 bis oben hin mit Produkt gefüllt, so dass die über die Zugabestellen 10 eingebrachten Produkte, wie z.B. Melasse, Wasser und/oder Dampf direkt in das Produkt 11 eingeleitet werden kann. Das zu mischende Produkt wird von den Paddeln 4 an die Wand gedrückt. Dabei werden die Paddeln 4 teilweise auf Rückwärtsförderung eingestellt, d.h. entgegen dem Produktstrom.Fig. 1 shows a schematic representation of a section through the inventive Mixing device. The mixer 1 comprises a housing 6 with an inlet 7 and an outlet 8. Within the housing 8 is a hollow shaft 2, in which a another wave 3 is located. On the hollow shaft 2 are the paddle-shaped Attached mixing tools 4. The hollow shaft 2 and the inner shaft 3 are by means of a Driven drive 13 via a belt overdrive 12. Below the outlet 8 is a connected to the inner shaft 3 rotary valve 9 is provided. Above and in the Area of the paddle-shaped mixing tools 4 are supply points 10 for gases, liquids and / or pasty products arranged. In the operating state of the mixer is the interior 5 is filled to the top with product, so that the 10 via the addition points incorporated products, e.g. Molasses, water and / or steam directly into the product 11 can be initiated. The product to be mixed is from the paddles 4 on pressed the wall. The paddles 4 are partially set to backward promotion, i.e. against the product stream.

In Fig. 2 ist der untere Teil des Mischers in einer anderen bevorzugten Ausführungsform dargestellt. Die Bezugszeichen sind die gleichen wie in Fig. 1. Im Boden des Mischergehäuses 6 ist eine Öffnung 14 angebracht, die von dem Drehschieber je nach gewünschter Dosierung geschlossen oder geöffnet ist. Hierbei kann der Drehschieber 9, der an der Innenwelle 3 angeordnet ist, über einen Riemenübertrieb 12 (siehe Fig. 1) zur drehzahlabhängigen Regelung der Dosierung mit der Hohlwelle 2 verbunden oder separat angetrieben sein. Der separate Antrieb der Innenwelle 3 mit dem Drehschieber 9 ist in der Zeichnung nicht dargestellt. Oberhalb der Öffnung 14 ist innerhalb des Gehäuses 6 ein Zwischenboden 15 vorgesehen, der die Öffnung 14 nach oben vom durchströmenden Produkt abschirmt. Der Zwischenboden 15 weist entgegengesetzt zur Öffnung 14 eine Öffnung 16 auf. Vorzugsweise sind zwischen dem Zwischenboden 15 und dem Boden 18 Austragswerkzeuge 19 angeordnet.In Fig. 2, the lower part of the mixer is in another preferred embodiment shown. The reference numerals are the same as in Fig. 1. In the bottom of the mixer housing 6 is an opening 14 attached, which depends on the rotary valve of the desired Dosing is closed or open. Here, the rotary valve 9, which is arranged on the inner shaft 3, via a belt overdrive 12 (see FIG. 1) connected to the speed-dependent control of the dosage with the hollow shaft 2 or be driven separately. The separate drive of the inner shaft 3 with the rotary valve 9 is not shown in the drawing. Above the opening 14 is within the housing 6 an intermediate bottom 15 is provided, which opens the opening 14 from the top shielding by flowing product. The intermediate bottom 15 has opposite to Opening 14 an opening 16. Preferably, between the intermediate bottom 15th and the bottom 18 discharge tools 19 arranged.

Der Drehzahlbereich des Mischens beträgt 200 U/min bis 1000 U/min, vorzugsweise ca. 250 U/min. The speed range of the mixing is 200 rpm to 1000 rpm, preferably approx. 250 rpm.

Bezugszeichen-ListeReference numeral list

11
Mischermixer
22
Hohlwellehollow shaft
33
Innenwelleinner shaft
44
MischwerkzeugeMixing tools
55
Innenraum des MischersInterior of the mixer
66
Gehäusecasing
77
Einlassinlet
88th
Auslassoutlet
99
Drehschieberrotary vane
1010
Zugabestellenaddition points
1111
Mischproduktmixed product
1212
Getriebetransmission
1313
Antriebdrive
1414
Öffnungopening
1515
Zwischenbodenfalse floor
1616
Öffnungopening
1717
Zugabenadditions
1818
Bodenground
1919
Austragswerkzeugedischarge tools

Claims (9)

  1. A device for vertically mixing gaseous, liquid, powdery, and/or pasty products with a mixing implement arranged in a housing, having at least one inlet for the product to be mixed, at least one outlet and at least one drive, wherein the mixing implements are arranged on a shaft and a product discharge device provided at the outlet (8), characterized in that the mixer (1) has lateral feed points (10) on the casing (6) for the gaseous, liquid, powdery or pasty additives, and that an intermediate floor (15) with an opening (16) is provided over the opening (4) of the outlet (8) in the housing floor (18), wherein the intermediate floor (15) shields the cross section of the opening (14) of the outlet (8) for diverting the mixed product (1).
  2. The device according to claim 1, characterized in that the mixing implement has paddles (4).
  3. The device according to claim 1 or 2, characterized in that the shaft is designed as a hollow shaft, wherein the paddles (4) are arranged on the hollow shaft (2), and an interior shaft (3) for a rotary valve (9) provided at the outlet (8) is arranged inside the hollow shaft (2).
  4. The device according to claim 3, characterized in that the drive (13) is connected with the hollow shaft (2) and the interior shaft (3) of the rotary valve (9) by means of a regulatable gearing, or the interior shaft (3) can be separately driven with the rotary valve (9).
  5. The device according to at least one of claims 1 to 4, characterized in that a discharge implement (19) is arranged on the shaft or hollow shaft (2) between the intermediate floor (15) and the floor (18).
  6. The device according to at least one of claims 1 to 5, characterized in that the mixing implements can be set at least partially to convey backwards, i.e., opposite the product stream.
  7. The device according to at least one of claims 1 to 5, characterized in that the mixer an extruder, feed dicing process or an expander are placed directly upstream and/or downstream from the mixer, and /or a batch mixer is placed upstream or downstream.
  8. Application of a device according to claims 1 to 7 for mixing gaseous, liquid, powdery and/or pasty products, characterized in that
    the device (1) is completely filled in the operating mode;
    a shearing field is built up in the mixed product (11) or product stream by the mixing implement, and
    the product flow takes place continuously proceeding form the inlets (7, 10) of the products (11, 17) to be mixed up to the outlet (8) of the product (11, 17) to be mixed, wherein the initial products (11, 17) are continuously introduced into the mixer (1), and the flow of initial products (11, 17) at the outlet (8) can be controllably metered.
  9. Application of a device according to claim 8 as a metering device.
EP01115708A 2001-07-05 2001-07-05 Device for vertical mixing Expired - Lifetime EP1273341B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP01115708A EP1273341B1 (en) 2001-07-05 2001-07-05 Device for vertical mixing
DK01115708T DK1273341T3 (en) 2001-07-05 2001-07-05 Vertical mixing apparatus
DE50107118T DE50107118D1 (en) 2001-07-05 2001-07-05 Device for vertical mixing
ES01115708T ES2248199T3 (en) 2001-07-05 2001-07-05 VERTICAL MIXING DEVICE.
AT01115708T ATE302054T1 (en) 2001-07-05 2001-07-05 VERTICAL MIXING DEVICE
CNB01120351XA CN100525894C (en) 2001-07-05 2001-08-09 Vertical mixing method and apparatus thereof
US09/973,811 US6789935B2 (en) 2001-07-05 2001-10-11 Method for vertical mixing and device for this

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP01115708A EP1273341B1 (en) 2001-07-05 2001-07-05 Device for vertical mixing
CNB01120351XA CN100525894C (en) 2001-07-05 2001-08-09 Vertical mixing method and apparatus thereof
US09/973,811 US6789935B2 (en) 2001-07-05 2001-10-11 Method for vertical mixing and device for this

Publications (2)

Publication Number Publication Date
EP1273341A1 EP1273341A1 (en) 2003-01-08
EP1273341B1 true EP1273341B1 (en) 2005-08-17

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EP01115708A Expired - Lifetime EP1273341B1 (en) 2001-07-05 2001-07-05 Device for vertical mixing

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US (1) US6789935B2 (en)
EP (1) EP1273341B1 (en)
CN (1) CN100525894C (en)
AT (1) ATE302054T1 (en)
DE (1) DE50107118D1 (en)
DK (1) DK1273341T3 (en)
ES (1) ES2248199T3 (en)

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Also Published As

Publication number Publication date
EP1273341A1 (en) 2003-01-08
US20030072215A1 (en) 2003-04-17
ATE302054T1 (en) 2005-09-15
CN1404910A (en) 2003-03-26
DK1273341T3 (en) 2006-01-02
DE50107118D1 (en) 2005-09-22
ES2248199T3 (en) 2006-03-16
US6789935B2 (en) 2004-09-14
CN100525894C (en) 2009-08-12

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