EP1618961B1 - Drive device for screw centrifuges - Google Patents

Drive device for screw centrifuges Download PDF

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Publication number
EP1618961B1
EP1618961B1 EP05106069A EP05106069A EP1618961B1 EP 1618961 B1 EP1618961 B1 EP 1618961B1 EP 05106069 A EP05106069 A EP 05106069A EP 05106069 A EP05106069 A EP 05106069A EP 1618961 B1 EP1618961 B1 EP 1618961B1
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EP
European Patent Office
Prior art keywords
drum
motor
screw
drive device
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.)
Not-in-force
Application number
EP05106069A
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German (de)
French (fr)
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EP1618961A1 (en
EP1618961A3 (en
Inventor
Günter Haider
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Hiller GmbH
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Hiller GmbH
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Publication of EP1618961A3 publication Critical patent/EP1618961A3/en
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Publication of EP1618961B1 publication Critical patent/EP1618961B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B1/2016—Driving control or mechanisms; Arrangement of transmission gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/02—Electric motor drives
    • B04B9/04—Direct drive

Definitions

  • the invention relates to a drive device of a screw centrifuge with the features specified in the dividing part of claim 1.
  • Such a drive for a screw centrifuge is out DE 11 78 791 A known.
  • a motor which is preferably designed as a DC motor, via a gearbox to the screw.
  • the simplest drive is a gear drive in which an electric motor drives the drum via a V-belt, while a second V-belt sets the worm in rotation via a planetary gear in parallel. About the planetary gear differential speed for the screw is generated. In this drive, both speeds are independently variable at standstill, including one of the two V-belt pairs must be replaced.
  • the invention has for its object to provide a drive device for worm centrifuges available, in which the differential speed between the drum and screw can be adjusted continuously during operation, without losing the disadvantages of the hybrid drive with a hydraulic motor and associated leakage problems or the large dimensions of a Four-shaft drive to have to accept.
  • this object is achieved in a drive device of the type outlined at the outset by the characterizing features of claim 1.
  • the drive device according to the invention is characterized by the lowest energy consumption and optimal efficiency by a high flexibility in the selection of the operating speed, without this the disadvantages of the four-shaft drive with its large space must be taken into account. Since the decoupled from the drum drive motor electric torque motor rotates with the drum, this drive device has a very compact design. The lack of a hydraulic motor for the worm drive eliminates any risk of leakage, which is particularly advantageous in applications in the food sector.
  • the housing is fixed to a radial flange of one with the drum is flanged connected by a hollow shaft through which the shaft of the screw is passed and carries a connected to the motor for driving the drum pulley.
  • the housing is flanged to an end wall of the drum and carries a connected to the motor for driving the drum pulley.
  • the electric comfort motor works like a normal, multipolar synchronous motor, whose rotor is equipped with permanent magnets on its cylindrical inner surface, while the internal stator carries the coils, which are supplied with three-phase current. Due to this design principle, the required space is very small and is exploited particularly effectively in terms of the torque generated.
  • FIG. 1 shows a longitudinal section through a screw centrifuge 10 with a rotating drum 12 and a worm mounted therein 14.
  • an electric motor 16 which via belt 18 a pulley 20 is rotated, which is fixedly connected to a drum 12 Hollow shaft 22 is mounted.
  • the drum 12 is rotatably supported in a known manner on both sides in bearings 24.
  • the housing 28 is connected via a flange 30 of the hollow shaft 22 fixed to the drum 12.
  • the shaft 32 of the screw 14 is passed.
  • the stator 34 of the torque motor 26 is wound, which carries a plurality of coils 36, which are supplied via a slip-ring rotor 38 with power.
  • the housing 28 of the torque motor 26 is formed as an external rotor 40 which is fitted on its cylindrical inner surface with permanent magnets 42 which are glued to the inner surface.
  • the rotor 40 of the torque motor 26 is fixedly connected to the shaft 32 of the worm 14 and carries on its cylindrical inner surface the already mentioned permanent magnets 42.
  • the stator 36 carrying the coils 36 is fixedly connected to the housing 28 of the torque motor 26 here.
  • the slip ring rotor 38 is also used here for powering the coil 36 of the stator 34, which engages axially in the cup-shaped rotor 40.
  • the hollow shaft 22 for the rotary drive of the drum 12 is formed between the bearing 24 and the flange 30, on which the housing 28 of the torque motor 26 is fixed, integrally with the pulley 20, which, as in the example of FIG. 1 , over V-belts 18 is connected to the motor 16 for driving the drum 12.
  • FIG. 3 embodiment shown represents a further variant in which the housing 28 of the torque motor 26 is flanged to an end wall 44 of the drum 12.
  • the housing 28 passes here into the hollow shaft 22, which is rotatably received in the bearing 24 and carries on its directed to slip ring rotor 38 end the pulley 20 which is connected via the belt V-belt 18 with the motor 16 for driving the drum 12.
  • the cylindrical inner surface of the rotor 40 formed by the housing 28 is equipped with permanent magnets 42, while on the shaft 32 for driving the worm 14, the coils 36 are mounted.
  • FIG. 3 in the FIG. 4 is indicated and a similar construction principle as the embodiment of FIG. 2 shows also has a Troquemotor 26, the housing 28 is fixed to the end wall 44 of the drum 12.
  • the rotor 40 of the torque motor 26 is fixedly connected to the shaft 32 of the screw 14, while the internal stator 34 is a part of the housing 28.
  • FIG. 5 indicates the possibility to connect several torque motors 26 for driving the drum 12 in a row.
  • torque motor 26 can be connected via a single-stage or multi-stage gear 46 with the shaft 32 for driving the screw 14.
  • FIG. 7 shows the combination of the in the FIGS. 5 and 6 shown possibilities with multiple torque motors 26 and an internal gear 46th
  • the invention also includes the use of torque motors in which the stator carries the permanent magnets, while the coils are mounted in the rotor.

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Abstract

The device has a rotating drum (12) for supporting a screw (14), and a driving motor coupled to the drum to actuate the drum. A screw driving motor comprises a housing that is permanently fixed to the drum to rotate with the motor. A torque motor is mounted in the housing and rotatably coupled to the screw, where the torque and drum driving motors are disconnected from one another.

Description

Die Erfindung betrifft eine Antriebsvorrichtung einer Schneckenzentrifuge mit den im einteilenden Teil des Anspruchs 1 angegebenen Merkmalen.The invention relates to a drive device of a screw centrifuge with the features specified in the dividing part of claim 1.

Ein solcher Antrieb für eine Schneckenzentrifuge ist aus DE 11 78 791 A bekannt. Dort treibt ein Motor, der vorzugsweise als Gleichstrommotor ausgebildet ist, über ein Getriebe die Schnecke an.Such a drive for a screw centrifuge is out DE 11 78 791 A known. There drives a motor, which is preferably designed as a DC motor, via a gearbox to the screw.

Für den Antrieb von Schneckenzentrifugen sind verschiedene Systeme bekannt. Der einfachste Antrieb ist ein Getriebeantrieb, bei welchem ein Elektromotor über einen Keilriemen die Trommel antreibt, während ein zweiter Keilriemen parallel dazu über ein Umlaufgetriebe die Schnecke in Drehung versetzt. Über das Umlaufgetriebe wird die Differenzdrehzahl für die Schnecke erzeugt. Bei diesem Antrieb sind beide Drehzahlen unabhängig voneinander im Stillstand veränderbar, wozu eines der beiden Keilriemenpaare ausgetauscht werden muß.Various systems are known for driving worm centrifuges. The simplest drive is a gear drive in which an electric motor drives the drum via a V-belt, while a second V-belt sets the worm in rotation via a planetary gear in parallel. About the planetary gear differential speed for the screw is generated. In this drive, both speeds are independently variable at standstill, including one of the two V-belt pairs must be replaced.

Ein anderes Konzept ist der sogenannte Hybridantrieb, bei dem ein Elektromotor über auswechselbare Keilriemen die Trommel antreibt, während für den Schneckenantrieb ein Hydraulikmotor vorgesehen ist. Damit kann die Differenzdrehzahl während des Betriebs stufenlos verstellt werden. Nachteile dieses Systems bestehen allerdings in einer schlechten Regelbarkeit bei kleinen Drehzahlen und in einem hohen Leistungsverlust bei großen Drehzahlen. Bei dem hydraulischen Antrieb lassen sich ferner Leckagen nicht vermeiden, was insbesondere bei lebensmitteltechnischen Anwendungen besonders nachteilig ist. Schließlich müssen bei dieser Antriebsart hohe Kosten für die Herstellung und auch für die Wartung in Kauf genommen werden.Another concept is the so-called hybrid drive, in which an electric motor drives the drum via exchangeable V-belts, while a hydraulic motor is provided for the worm drive. Thus, the differential speed can be adjusted continuously during operation. Disadvantages of this system, however, are a poor controllability at low speeds and high power loss at high speeds. In the hydraulic drive further leakage can not be avoided, which is particularly disadvantageous especially in food applications. Finally, have to In this type of drive high costs for the production and maintenance are accepted.

Nicht zuletzt ist als weitere Antriebsmöglichkeit der sogenannte Vierwellenantrieb mit zwei Elektromotoren bekannt, der allerdings einen großen Bauraum benötigt und häufig Probleme hinsichtlich der Abdichtung an den vier Wellen verursacht.Last but not least is known as a further drive possibility of the so-called four-shaft drive with two electric motors, which, however, requires a large space and often causes problems with respect to the seal on the four waves.

Der Erfindung liegt die Aufgabe zugrunde, eine Antriebsvorrichtung für Schneckenzentrifugen zur Verfügung zu stellen, bei der die Differenzdrehzahl zwischen Trommel und Schnecke während des Betriebs stufenlos verstellt werden kann, ohne hierbei die Nachteile des Hybridantriebes mit einem Hydraulikmotor und damit verbundenen Leckageproblemen oder die großen Bauabmessungen eines Vier-Wellen-Antriebs in Kauf nehmen zu müssen.The invention has for its object to provide a drive device for worm centrifuges available, in which the differential speed between the drum and screw can be adjusted continuously during operation, without losing the disadvantages of the hybrid drive with a hydraulic motor and associated leakage problems or the large dimensions of a Four-shaft drive to have to accept.

Gemäß der Erfindung wird diese Aufgabe bei einer Antriebsvorrichtung der eingangs umrissenen Gattung durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.According to the invention, this object is achieved in a drive device of the type outlined at the outset by the characterizing features of claim 1.

Die erfindungsgemäße Antriebsvorrichtung zeichnet sich bei niedrigstem Energiebedarf und optimalem Wirkungsgrad durch eine hohe Flexibilität in der Auswahl der Betriebsdrehzahl aus, ohne daß hierbei die Nachteile des Vier-Wellen-Antriebs mit seinem großen Bauraum in Kauf genommen werden müssen. Da der vom Trommelantriebsmotor entkoppelte elektrische Torquemotor mit der Trommel umläuft, hat diese Antriebsvorrichtung eine sehr kompakte Bauweise. Mangels eines Hydraulikmotors für den Schneckenantrieb entfällt jedes Risiko von Leckagen, was insbesondere bei Anwendungen im Lebensmittelbereich von großem Vorteil ist.The drive device according to the invention is characterized by the lowest energy consumption and optimal efficiency by a high flexibility in the selection of the operating speed, without this the disadvantages of the four-shaft drive with its large space must be taken into account. Since the decoupled from the drum drive motor electric torque motor rotates with the drum, this drive device has a very compact design. The lack of a hydraulic motor for the worm drive eliminates any risk of leakage, which is particularly advantageous in applications in the food sector.

Eine Realisierungsmöglichkeit der Erfindung besteht darin, daß das Gehäuse an einem radialen Flansch einer mit der Trommel fest verbundenen Hohlwelle angeflanscht ist, durch die die Welle der Schnecke hindurchgeführt ist und die eine mit dem Motor für den Antrieb der Trommel verbundene Riemenscheibe trägt.One realization of the invention is that the housing is fixed to a radial flange of one with the drum is flanged connected by a hollow shaft through which the shaft of the screw is passed and carries a connected to the motor for driving the drum pulley.

Alternativ kann vorgesehen werden, daß das Gehäuse an eine Stirnwand der Trommel angeflanscht ist und eine mit dem Motor für den Antrieb der Trommel verbundene Riemenscheibe trägt.Alternatively it can be provided that the housing is flanged to an end wall of the drum and carries a connected to the motor for driving the drum pulley.

Der elektrische Troquemotor arbeitet wie ein normaler, mehrpoliger Synchronmotor, dessen Rotor auf seiner zylindrischen Innenfläche mit Permanentmagneten bestückt ist, während der innenliegende Stator die Spulen trägt, die mit Drehstrom versorgt werden. Durch dieses Konstruktionsprinzip ist der benötigte Bauraum sehr klein und wird hinsichtlich des erzeugten Drehmomentes besonders wirkungsvoll ausgenutzt.The electric comfort motor works like a normal, multipolar synchronous motor, whose rotor is equipped with permanent magnets on its cylindrical inner surface, while the internal stator carries the coils, which are supplied with three-phase current. Due to this design principle, the required space is very small and is exploited particularly effectively in terms of the torque generated.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den Patentansprüchen und aus der folgenden Beschreibung von Ausführungsbeispielen, die in der Zeichnung dargestellt sind. Es zeigen:

  • Figur 1 die schematische Schnittdarstellung einer Antriebsvorrichtung für eine Schneckenzentrifuge gemäß der Erfindung,
  • Figur 2 die ausschnittsweise Darstellung einer Variante der Figur 1,
  • Figur 3 einen Längsschnitt durch eine weitere Variante der Figur 1,
  • Figur 4 eine vergrößerte Darstellung einer nochmals abgeänderten Ausführungsmöglichkeit,
  • Figur 5 die schematische Darstellung des Einsatzes mehrerer Torquemotoren,
  • Figur 6 eine Möglichkeit des Einsatzes eines Torquemotors mit Getriebe und
  • Figur 7 eine Kombination der in den Figuren 5 und 6 gezeigten Möglichkeiten.
Further advantages and features of the invention will become apparent from the claims and from the following description of exemplary embodiments, which are illustrated in the drawing. Show it:
  • FIG. 1 the schematic sectional view of a drive device for a screw centrifuge according to the invention,
  • FIG. 2 the fragmentary representation of a variant of FIG. 1 .
  • FIG. 3 a longitudinal section through a further variant of FIG. 1 .
  • FIG. 4 an enlarged view of a further modified embodiment,
  • FIG. 5 the schematic representation of the use of several torque motors,
  • FIG. 6 a possibility of using a torque motor with gear and
  • FIG. 7 a combination of the in the FIGS. 5 and 6 shown possibilities.

Figur 1 zeigt einen Längsschnitt durch eine Schneckenzentrifuge 10 mit einer umlaufenden Trommel 12 und einer darin gelagerten Schnecke 14. Für den Drehantrieb der Trommel 12 dient ein Elektromotor 16, der über Keilriemen 18 eine Riemenscheibe 20 in Drehung versetzt, welche auf eine mit der Trommel 12 fest verbundene Hohlwelle 22 aufgezogen ist. Die Trommel 12 ist in bekannter Weise auf beiden Seiten in Lagern 24 drehbar abgestützt. FIG. 1 shows a longitudinal section through a screw centrifuge 10 with a rotating drum 12 and a worm mounted therein 14. For the rotary drive of the drum 12 is an electric motor 16 which via belt 18 a pulley 20 is rotated, which is fixedly connected to a drum 12 Hollow shaft 22 is mounted. The drum 12 is rotatably supported in a known manner on both sides in bearings 24.

Für den Drehantrieb der Schnecke 14 dient ein vom Motor 16 entkoppelter, mehrpoliger Torquemotor 26, dessen Gehäuse 28 über einen Flansch 30 der Hohlwelle 22 fest mit der Trommel 12 verbunden ist. Durch die Hohlwelle 22 ist die Welle 32 der Schnecke 14 hindurchgeführt. Auf die Welle 32 der Schnecke 14 ist der Stator 34 des Torquemotors 26 aufgezogen, welcher eine Vielzahl von Spulen 36 trägt, die über einen Schleifringläufer 38 mit Strom versorgt werden.For the rotary drive of the screw 14 is a decoupled from the motor 16, multipolar torque motor 26, the housing 28 is connected via a flange 30 of the hollow shaft 22 fixed to the drum 12. Through the hollow shaft 22, the shaft 32 of the screw 14 is passed. On the shaft 32 of the screw 14, the stator 34 of the torque motor 26 is wound, which carries a plurality of coils 36, which are supplied via a slip-ring rotor 38 with power.

Das Gehäuse 28 des Torquemotors 26 ist als außenliegender Rotor 40 ausgebildet, der an seiner zylindrischen Innenfläche mit Permanentmagneten 42 bestückt ist, die auf die Innenfläche aufgeklebt sind.The housing 28 of the torque motor 26 is formed as an external rotor 40 which is fitted on its cylindrical inner surface with permanent magnets 42 which are glued to the inner surface.

Bei der in Figur 2 gezeigten Variante ist der Rotor 40 des Torquemotors 26 fest mit der Welle 32 der Schnecke 14 verbunden und trägt auf seiner zylindrischen Innenfläche die bereits erwähnten Permanentmagnete 42. Der die Spulen 36 tragende Stator 34 ist hier fest mit dem Gehäuse 28 des Torquemotors 26 verbunden. Der Schleifringläufer 38 dient auch hier zur Stromversorgung der Spulen 36 des Stators 34, der axial in den topfförmig gestalteten Rotor 40 eingreift.At the in FIG. 2 the rotor 40 of the torque motor 26 is fixedly connected to the shaft 32 of the worm 14 and carries on its cylindrical inner surface the already mentioned permanent magnets 42. The stator 36 carrying the coils 36 is fixedly connected to the housing 28 of the torque motor 26 here. The slip ring rotor 38 is also used here for powering the coil 36 of the stator 34, which engages axially in the cup-shaped rotor 40.

Die Hohlwelle 22 für den Drehantrieb der Trommel 12 ist zwischen dem Lager 24 und dem Flansch 30, an dem das Gehäuse 28 des Torquemotors 26 befestigt ist, einstückig mit der Riemenscheibe 20 ausgebildet, die, wie beim Beispiel der Figur 1, über Keilriemen 18 mit dem Motor 16 für den Antrieb der Trommel 12 verbunden ist.The hollow shaft 22 for the rotary drive of the drum 12 is formed between the bearing 24 and the flange 30, on which the housing 28 of the torque motor 26 is fixed, integrally with the pulley 20, which, as in the example of FIG. 1 , over V-belts 18 is connected to the motor 16 for driving the drum 12.

Das in Figur 3 gezeigte Ausführungsbeispiel stellt eine weitere Variante dar, bei der das Gehäuse 28 des Torquemotors 26 an eine Stirnwand 44 der Trommel 12 angeflanscht ist. Das Gehäuse 28 geht hier in die Hohlwelle 22 über, die in dem Lager 24 drehbar aufgenommen ist und auf ihrem zum Schleifringläufer 38 gerichteten Ende die Riemenscheibe 20 trägt, welche über den Keilriemen 18 mit dem Motor 16 für den Antrieb der Trommel 12 verbunden ist. Auch bei diesem Ausführungsbeispiel ist die zylindrische Innenfläche des durch das Gehäuse 28 gebildeten Rotors 40 mit Permanentmagneten 42 bestückt, während auf die Welle 32 für den Antrieb der Schnecke 14 die Spulen 36 aufgezogen sind.This in FIG. 3 embodiment shown represents a further variant in which the housing 28 of the torque motor 26 is flanged to an end wall 44 of the drum 12. The housing 28 passes here into the hollow shaft 22, which is rotatably received in the bearing 24 and carries on its directed to slip ring rotor 38 end the pulley 20 which is connected via the belt V-belt 18 with the motor 16 for driving the drum 12. Also in this embodiment, the cylindrical inner surface of the rotor 40 formed by the housing 28 is equipped with permanent magnets 42, while on the shaft 32 for driving the worm 14, the coils 36 are mounted.

Die Variante der Figur 3, die in Figur 4 angedeutet ist und ein ähnliches Konstruktionsprinzip wie die Ausführungsform der Figur 2 zeigt, hat ebenfalls einen Troquemotor 26, dessen Gehäuse 28 an der Stirnwand 44 der Trommel 12 befestigt ist. Wie beim Beispiel der Figur 2 ist auch hier der Rotor 40 des Torquemotors 26 fest mit der Welle 32 der Schnecke 14 verbunden, während der innenliegende Stator 34 ein Teil des Gehäuses 28 ist.The variant of FIG. 3 , in the FIG. 4 is indicated and a similar construction principle as the embodiment of FIG. 2 shows also has a Troquemotor 26, the housing 28 is fixed to the end wall 44 of the drum 12. As in the example of FIG. 2 Here, too, the rotor 40 of the torque motor 26 is fixedly connected to the shaft 32 of the screw 14, while the internal stator 34 is a part of the housing 28.

Figur 5 deutet die Möglichkeit an, mehrere Torquemotoren 26 für den Antrieb der Trommel 12 hintereinander zu schalten. FIG. 5 indicates the possibility to connect several torque motors 26 for driving the drum 12 in a row.

In Figur 6 ist gezeigt, daß der Torquemotor 26 über ein einstufiges oder mehrstufiges Getriebe 46 mit der Welle 32 für den Antrieb der Schnecke 14 verbunden werden kann.In FIG. 6 It is shown that the torque motor 26 can be connected via a single-stage or multi-stage gear 46 with the shaft 32 for driving the screw 14.

Figur 7 zeigt die Kombination der in den Figuren 5 und 6 gezeigten Möglichkeiten mit mehreren Torquemotoren 26 und einem innenliegenden Getriebe 46. FIG. 7 shows the combination of the in the FIGS. 5 and 6 shown possibilities with multiple torque motors 26 and an internal gear 46th

Selbstverständlich umfaßt die Erfindung auch den Einsatz von Torquemotoren, bei denen der Stator die Permanentmagnete trägt, während die Spulen im Rotor angebracht sind.Of course, the invention also includes the use of torque motors in which the stator carries the permanent magnets, while the coils are mounted in the rotor.

Claims (7)

  1. Drive device of a screw centrifuge (10) comprising a rotating drum (12) driven by a motor (16) and a screw (14) coaxially supported in the drum (12), the shaft (32) of said screw (14) being coupled to a driving motor (26) decoupled from said drum (12) driving motor (16), the casing (28) of which is permanently fixed to the drum (12) so as to rotate therewith, characterized in that the motor (26) driving the screw (14) is a synchronous motor made up of a torque motor (26) having a rotor (40) the cylindrical inner surface of which is equipped with a plurality of permanent magnets (42) whereas the internally mounted stator (34) carries a plurality coils (36).
  2. Drive device according to claim 1 wherein said casing (28) is connected to a radial flange (30) of a hollow shaft (22) permanently fixed to the drum (12), the shaft (32) of the screw (14) passing through said hollow shaft (22) which shaft (22) carries a pulley (20) coupled to said motor (16) for driving the drum (12).
  3. Drive device according to claim 1, wherein said casing (28) is flanged to an end wall (44) of the drum (12) and carries a pulley (20) coupled to said motor (16) for driving the drum (12).
  4. Drive device according to any of the preceding claims, wherein the casing (28) of the torque motor (26) is designed as its external rotor (40) whereas the stator (34) bearing the coils (36) is fastened on the shaft (32) of the screw (14).
  5. Drive device according to any of the preceding claims 1 to 3, wherein the rotor (40) of the torque motor (26) is permanently fixed to the shaft (32) of the screw (14) whereas the internally mounted stator (34) is permanently connected to the casing (28).
  6. Drive device according to any of the preceding claims, wherein a plurality of torque motors (26) are coupled in series.
  7. Drive device according to any of the preceding claims, wherein the torque motor (26) is coupled to the screw (14) through a single-stage or multi-stage gear train (46).
EP05106069A 2004-07-16 2005-07-05 Drive device for screw centrifuges Not-in-force EP1618961B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004034409A DE102004034409A1 (en) 2004-07-16 2004-07-16 Drive device for worm centrifuges

Publications (3)

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EP1618961A1 EP1618961A1 (en) 2006-01-25
EP1618961A3 EP1618961A3 (en) 2006-11-02
EP1618961B1 true EP1618961B1 (en) 2008-12-03

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US (1) US7547273B2 (en)
EP (1) EP1618961B1 (en)
AT (1) ATE416032T1 (en)
DE (2) DE102004034409A1 (en)
ES (1) ES2315799T3 (en)

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ATE309049T1 (en) * 2003-05-19 2005-11-15 Andritz Guinard S A S DRIVE SYSTEM OF A CENTRIFUGE
DE10334370A1 (en) * 2003-07-25 2005-02-24 Westfalia Separator Ag Solid bowl screw centrifuge with direct drive
DE102004034409A1 (en) * 2004-07-16 2006-02-02 Hiller Gmbh Drive device for worm centrifuges

Also Published As

Publication number Publication date
EP1618961A1 (en) 2006-01-25
ES2315799T3 (en) 2009-04-01
US20060014619A1 (en) 2006-01-19
DE502005006120D1 (en) 2009-01-15
EP1618961A3 (en) 2006-11-02
US7547273B2 (en) 2009-06-16
DE102004034409A1 (en) 2006-02-02
ATE416032T1 (en) 2008-12-15

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