EP1338796A2 - Moineau Pump - Google Patents

Moineau Pump Download PDF

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Publication number
EP1338796A2
EP1338796A2 EP03002763A EP03002763A EP1338796A2 EP 1338796 A2 EP1338796 A2 EP 1338796A2 EP 03002763 A EP03002763 A EP 03002763A EP 03002763 A EP03002763 A EP 03002763A EP 1338796 A2 EP1338796 A2 EP 1338796A2
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EP
European Patent Office
Prior art keywords
screw conveyor
rotor
pump according
screw
eccentric
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.)
Granted
Application number
EP03002763A
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German (de)
French (fr)
Other versions
EP1338796B1 (en
EP1338796A3 (en
Inventor
Reinhard Denk
Bernhard Murrenhof
Christopher Martin Gwalchmai
Johann Kreidl
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.)
Netzsch Pumpen and Systeme GmbH
Original Assignee
Netzsch Pumpen and Systeme GmbH
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
Application filed by Netzsch Pumpen and Systeme GmbH filed Critical Netzsch Pumpen and Systeme GmbH
Publication of EP1338796A2 publication Critical patent/EP1338796A2/en
Publication of EP1338796A3 publication Critical patent/EP1338796A3/en
Application granted granted Critical
Publication of EP1338796B1 publication Critical patent/EP1338796B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits

Definitions

  • the invention relates to an eccentric screw pump, consisting of a Pump part with a tubular pump housing, with a stator lining with a correspondingly shaped two- or multi-flight screw Pump cavity, with a feed housing and with a drive and with a helical rotor, which is connected to a Drive shaft is connected and the flexible shaft over at both ends rigid coupling elements is connected to the rotor and the drive shaft.
  • Such a pump structure is known from EP 0 657 649 B1.
  • the flexible shaft used has a large radial distance from the inlet housing.
  • the flexible shaft is here by a screw connection with the Drive shaft and via a clutch, the torque via a pin transmits, connected to the rotor head.
  • the pen is from one to the rotor head sliding sleeve covered.
  • the product fed to the inlet housing only gets into the pump from the pressure introduced and the suction power of the pump Rotor / stator.
  • the invention has for its object an eccentric screw pump with a to improve the flexible shaft in terms of product intake.
  • the task is characterized by the characteristic features of the Claim 1 solved.
  • Advantageous inventive developments are the features the respective subclaims.
  • the invention is based on the knowledge that with increasing viscosity of the promoting product is necessary in the feed housing of the pump create additional support. So far, has been related to the Use of flexible shafts does not require additional support Screw conveyor known. However, the invention also addresses the problem of unnecessary weight load with appropriate stability of the screw conveyor on. So it was surprisingly recognized that the screw conveyor depending on the size, can be formed with very thin and narrow material, if the material is under a certain prestress. This bias expresses itself in the span of the screw conveyor, which is 0.05 to 0.5 times the Corresponds to the rotor diameter.
  • the preload is on the screw conveyor applied by moving the screw by a value corresponding to the The aforementioned tolerance range is positively deformed. This deformation happens through a mechanical extension of the screw conveyor. To do this, the screw conveyor on one of its sides firmly on one side of the flexible shaft or on this Coupling element on the side attached and after spreading on attached to the opposite side of the flexible shaft.
  • a negative bias is also imposed on the screw conveyor by the Screw conveyor undergoes compression.
  • the value by which the screw conveyor is compressed is in the same tolerance range as with the positive Preload. Due to the preload of the screw conveyor, the The screw body keeps its shape during the turning movement, while the bending rod is deformed or twisted according to the eccentricity generated by the rotor.
  • the weight saving resulting from the material saving for the screw conveyor results has a positive effect on the wear reduction of all rotating parts and of the related parts noticeable.
  • the pump shown in Fig. 1 consists of a pump part 10, a Loading housing 12 and a housing 14, in or on which a seal 16 and a storage 18 are attached or accommodated.
  • a stator 20 is exposed a tubular pump housing 22 and a stator liner 24 together.
  • the stator is between two flanges 26, 26 'by screws 28, 28 'braced.
  • the stator lining 24 has a two-course helical pump cavity 30.
  • a coupling element 38 provides the rigid Connection to flexible shaft 40 secure. Extends coaxially to the bending bar 40 Over the entire length of a screw conveyor 42, which is both flexible Shaft 40 as well as a radial distance from the inside of the conveyor housing having. With the two welded to each end of the screw conveyor 42 disk-shaped ring elements 44, 44 'the screw goes over Coupling elements 38, 48 have a rotationally fixed connection to the flexible shaft 40 a, for which the ring elements 44, 44 'are provided with screws 46, 46'. This Screws 46, 46 'form a non-positive or positive connection with the Coupling elements 38, 48.
  • the coupling element 48 is tubular and takes in its cavity a clamping element 50 through which the coupling element 48 with the flexible shaft is rotatably connected.
  • Product gets into the Feeding housing 12 via a hopper 52.
  • the material of the In the exemplary embodiment, the screw conveyor is formed from flat material, wherein round material can also be used if necessary. Likewise, for different uses different materials like different Steels are used.
  • the positive preload is expressed in the span the screw conveyor, which is 0.05 to 0.5 times the rotor diameter corresponds to rotors with a diameter of 15 - 180 mm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The eccentric peristaltic pump for viscous fluids has the suction and feed shaft of the pump is coaxial to the curved shaft of the feed hose. The curved shaft has both ends connected via rigid couplings to the rotor (34) and the drive shaft (54). The tensioning movement of the feed hose is between point zero five and point five times the rotor diameter.

Description

Die Erfindung betrifft eine Exzenterschneckenpumpe, bestehend aus einem Pumpenteil mit einem rohrförmigen Pumpengehäuse, mit einer Statorauskleidung mit einem entsprechend einer zwei- oder mehrgängigen Schnecke geformten Pumpenhohlraum, mit einem Beschickungsgehäuse und mit einem Antrieb und mit einem schneckenförmigen Rotor, der mittels einer biegsamen Welle mit einer Antriebswelle verbunden ist und die biegsame Welle an ihren beiden Enden über starre Kupplungselemente mit dem Rotor und der Antriebswelle verbunden ist.The invention relates to an eccentric screw pump, consisting of a Pump part with a tubular pump housing, with a stator lining with a correspondingly shaped two- or multi-flight screw Pump cavity, with a feed housing and with a drive and with a helical rotor, which is connected to a Drive shaft is connected and the flexible shaft over at both ends rigid coupling elements is connected to the rotor and the drive shaft.

Ein derartiger Pumpenaufbau ist bekannt aus der EP 0 657 649 B1. Die dort eingesetzte biegsame Welle besitzt einen großen radialen Abstand zum Einlassgehäuse. Die biegsame Welle ist hier durch eine Schraubenverbindung mit der Antriebswelle und über eine Kupplung, die das Drehmoment über einen Stift überträgt, mit dem Rotorkopf verbunden. Der Stift wird von einer auf den Rotorkopf aufschiebbaren Muffe abgedeckt. Das dem Einlassgehäuse zugeführte Produkt gelangt allein vom eingeleiteten Druck und der Saugleistung der Pumpe in den Rotor-/Statorbereich.Such a pump structure is known from EP 0 657 649 B1. These The flexible shaft used has a large radial distance from the inlet housing. The flexible shaft is here by a screw connection with the Drive shaft and via a clutch, the torque via a pin transmits, connected to the rotor head. The pen is from one to the rotor head sliding sleeve covered. The product fed to the inlet housing only gets into the pump from the pressure introduced and the suction power of the pump Rotor / stator.

Aus der DE 15 53 201 A1 geht eine Exzenterschneckenpumpe hervor, bei der eine starre Verbindungswelle zwischen einem schneckenförmigen Rotor und einer Antriebswelle angeordnet ist. Auf dem antriebsseitigen Ende der Verbindungswelle sitzt eine Antriebshülse, die eine fliegend gelagerte Förderschnecke hält und rotieren lässt. Die Förderschnecke erhält eine gewisse Laufruhe und Eigenstabilität dadurch, dass sie sich ständig an der Innenwand am Einlassgehäuse abstützt.From DE 15 53 201 A1 an eccentric screw pump emerges, in which one rigid connecting shaft between a helical rotor and a Drive shaft is arranged. On the drive end of the connecting shaft sits a drive sleeve that holds a cantilevered screw conveyor and can rotate. The screw conveyor has a certain smoothness and inherent stability in that it is constantly supported on the inner wall of the inlet housing.

Der Erfindung liegt die Aufgabe zugrunde, eine Exzenterschneckenpumpe mit einer biegsamen Welle bezüglich des Produkteinzugs zu verbessern.The invention has for its object an eccentric screw pump with a to improve the flexible shaft in terms of product intake.

Erfindungsgemäss wird die Aufgabe durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Vorteilhafte erfinderische Weiterbildungen sind den Merkmalen der jeweiligen Unteransprüche zu entnehmen.According to the invention the task is characterized by the characteristic features of the Claim 1 solved. Advantageous inventive developments are the features the respective subclaims.

Die Erfindung geht von der Kenntnis aus, dass es bei steigender Viskosität des zu fördernden Produkts notwendig wird, im Beschickungsgehäuse der Pumpe eine zusätzliche Förderwirkung zu schaffen. Bisher ist im Zusammenhang mit dem Einsatz von biegsamen Wellen keine Zwangsförderung durch eine zusätzliche Förderschnecke bekannt. Die Erfindung nimmt sich jedoch auch dem Problem der unnötigen Gewichtsbelastung bei einer entsprechender Stabilität der Förderschnecke an. So hat man überraschenderweise erkannt, dass die Förderschnecke je nach Baugrösse mit sehr dünnem und schmalen Material geformt sein kann, wenn das Material unter einer gewissen Vorspannung steht. Diese Vorspannung drückt sich im Spannweg der Förderschnecke aus, der dem 0,05- bis 0,5fachem des Rotordurchmessers entspricht. Die Vorspannung wird auf die Förderschnecke aufgebracht, in dem man die Schnecke um einen Wert entsprechend dem vorgenannten Toleranzbereich positiv verformt. Diese Verformung geschieht durch eine mechanische Streckung der Förderschnecke. Dazu wird die Förderschnecke an einer ihrer Seiten fest an einer Seite der biegsamen Welle bzw. dem an dieser Seite befindlichen Kupplungselement angebracht und nach erfolgter Spreizung an der Gegenseite der biegsamen Welle befestigt.The invention is based on the knowledge that with increasing viscosity of the promoting product is necessary in the feed housing of the pump create additional support. So far, has been related to the Use of flexible shafts does not require additional support Screw conveyor known. However, the invention also addresses the problem of unnecessary weight load with appropriate stability of the screw conveyor on. So it was surprisingly recognized that the screw conveyor depending on the size, can be formed with very thin and narrow material, if the material is under a certain prestress. This bias expresses itself in the span of the screw conveyor, which is 0.05 to 0.5 times the Corresponds to the rotor diameter. The preload is on the screw conveyor applied by moving the screw by a value corresponding to the The aforementioned tolerance range is positively deformed. This deformation happens through a mechanical extension of the screw conveyor. To do this, the screw conveyor on one of its sides firmly on one side of the flexible shaft or on this Coupling element on the side attached and after spreading on attached to the opposite side of the flexible shaft.

Entsprechend einer weiteren erfindungsgemässen Ausführung der Erfindung kann der Förderschnecke auch eine negative Vorspannung auferlegt werden, indem die Förderschnecke eine Stauchung erfährt. Der Wert, um den die Förderschnecke gestaucht wird, liegt im gleichen Toleranzbereich wie bei der positiven Vorspannung. Aufgrund der Vorspannung der Förderschnecke bleibt der Schneckenkörper während der Drehbewegung formstabil, während der Biegestab entsprechend der vom Rotor erzeugten Exzentrizität verformt bzw. verwunden wird. Die Gewichtsersparnis, die sich aus der Materialeinsparung für die Förderschnecke ergibt, macht sich positiv auf die Verschleissreduzierung aller rotierender Teile und der damit in Verbindung stehenden Teile bemerkbar.According to a further embodiment of the invention according to the invention a negative bias is also imposed on the screw conveyor by the Screw conveyor undergoes compression. The value by which the screw conveyor is compressed, is in the same tolerance range as with the positive Preload. Due to the preload of the screw conveyor, the The screw body keeps its shape during the turning movement, while the bending rod is deformed or twisted according to the eccentricity generated by the rotor. The weight saving resulting from the material saving for the screw conveyor results, has a positive effect on the wear reduction of all rotating parts and of the related parts noticeable.

Aus einer weiteren erfindungsgemässen Weiterbildung der Erfindung geht die Verbindung der Förderschnecke mit der biegsamen Welle und/oder der Antriebswelle hervor. So kann die Förderschnecke, die beispielweise an beiden Seiten mit einem angeschweissten Ring versehen ist, entweder mittels Stellschrauben kraft- oder formschlüssige Verbindungen eingehen.From a further development of the invention according to the invention Connection of the screw conveyor to the flexible shaft and / or the Drive shaft. So the screw conveyor, for example, on both Sides is provided with a welded ring, either by means of Make set screws with positive or positive connections.

Weitere Einzelheiten der Erfindung werden anhand der Zeichnung erläutert, in der ein Ausführungsbeispiel der Erfindung gezeigt ist.Further details of the invention will be explained with reference to the drawing in which an embodiment of the invention is shown.

Es zeigt:

  • Fig. 1: einen Längsschnitt einer Exzenterschneckenpumpe.
    • It shows:
  • Fig. 1: a longitudinal section of an eccentric screw pump.

    • Die in Fig. 1 dargestellte Pumpe besteht aus einem Pumpenteil 10, einem Beschickungsgehäuse 12 und einem Gehäuse 14, in oder an dem eine Dichtung 16 und eine Lagerung 18 an- oder untergebracht sind. Ein Stator 20 setzt sich aus einem rohrförmigen Pumpengehäuse 22 und einer Statorauskleidung 24 zusammen. Der Stator wird zwischen zwei Flanschen 26, 26' durch Schrauben 28, 28' verspannt. Die Statorauskleidung 24 verfügt über einen zweigängigen schneckenförmigen Pumpenhohlraum 30.The pump shown in Fig. 1 consists of a pump part 10, a Loading housing 12 and a housing 14, in or on which a seal 16 and a storage 18 are attached or accommodated. A stator 20 is exposed a tubular pump housing 22 and a stator liner 24 together. The stator is between two flanges 26, 26 'by screws 28, 28 'braced. The stator lining 24 has a two-course helical pump cavity 30.

    Am druckseitigen Ende des Stators 20 ist ein Flansch 26 mit einem Anschlußstutzen 32 versehen. Am saugseitigen Ende des Rotors 34, der mit seinem Rotorkopf 36 bis in ein Beschickungsgehäuse 12 hineinragt, stellt ein Kupplungselement 38 die starre Verbindung zur biegsamen Welle 40 sicher. Koaxial zum Biegestab 40 erstreckt sich über dessen gesamte Länge eine Förderschnecke 42, die sowohl zur biegsamen Welle 40 wie auch zur Innenseite des Fördergehäuses einen radialen Abstand aufweist. Mit den beiden an jedem Ende der Förderschnecke 42 festgeschweissten scheibenförmigen Ringelementen 44, 44' geht die Schnecke über die Kupplungselemente 38, 48 eine drehfeste Verbindung mit der biegsamen Welle 40 ein, wozu die Ringelemente 44, 44' mit Schrauben 46, 46' versehen sind. Diese Schrauben 46, 46' bilden eine kraft- oder auch formschlüssige Verbindung mit den Kupplungselementen 38, 48.At the pressure-side end of the stator 20 there is a flange 26 with a connecting piece 32 provided. At the suction end of the rotor 34, which with its rotor head 36 to protrudes into a loading housing 12, a coupling element 38 provides the rigid Connection to flexible shaft 40 secure. Extends coaxially to the bending bar 40 Over the entire length of a screw conveyor 42, which is both flexible Shaft 40 as well as a radial distance from the inside of the conveyor housing having. With the two welded to each end of the screw conveyor 42 disk-shaped ring elements 44, 44 'the screw goes over Coupling elements 38, 48 have a rotationally fixed connection to the flexible shaft 40 a, for which the ring elements 44, 44 'are provided with screws 46, 46'. This Screws 46, 46 'form a non-positive or positive connection with the Coupling elements 38, 48.

    Das Kupplungselement 48 ist rohrförmig ausgebildet und nimmt in seinem Hohlraum ein Spannelement 50 auf, durch welches das Kupplungselement 48 mit der biegsamen Welle drehfest verbunden ist. Produkt gelangt in das Beschickungsgehäuse 12 über einen Fülltrichter 52. Das Material der Förderschnecke ist im Ausführungsbeispiel aus Flachmaterial ausgebildet, wobei hierzu bei Bedarf auch Rundmaterial verwendet werden kann. Ebenso können für unterschiedliche Anwendungen unterschiedliche Materialien, wie unterschiedliche Stähle zum Einsatz kommen. Die positive Vorspannung drückt sich im Spannweg der Förderschnecke aus, der dem 0,05 bis 0,5fachen des Rotordurchmessers entspricht, bei Rotoren mit einem Durchmesser von 15 - 180 mm.The coupling element 48 is tubular and takes in its cavity a clamping element 50 through which the coupling element 48 with the flexible shaft is rotatably connected. Product gets into the Feeding housing 12 via a hopper 52. The material of the In the exemplary embodiment, the screw conveyor is formed from flat material, wherein round material can also be used if necessary. Likewise, for different uses different materials like different Steels are used. The positive preload is expressed in the span the screw conveyor, which is 0.05 to 0.5 times the rotor diameter corresponds to rotors with a diameter of 15 - 180 mm.

    Claims (9)

    Exzenterschneckenpumpe bestehend aus einem Pumpenteil (10) mit einem rohrförmigen Pumpengehäuse (22) mit einer Statorauskleidung (24) mit einem entsprechend einer zwei- oder mehrgängigen Schnecke geformten Pumpenhohlraum (30) mit einem Beschickungsgehäuse (12) mit einem Antrieb mit einem schneckenförmigen Rotor (34), der mittels einer biegsamen Welle (40) mit einer Antriebswelle (54) verbunden ist die biegsame Welle (40) an ihren beiden Enden über starre Kupplungselemente (38, 48) mit dem Rotor (34) und der Antriebswelle (54) verbunden ist. dadurch gekennzeichnet, dass die biegsame Welle (40) von einer koaxial angeordneten Förderschnecke (42) umgeben ist, die unter einer Vorspannung steht.Eccentric screw pump consisting of a pump part (10) with a tubular pump housing (22) with a stator lining (24) with a pump cavity (30) shaped according to a two- or multi-start screw with a loading housing (12) with a drive with a helical rotor (34) which is connected to a drive shaft (54) by means of a flexible shaft (40) the flexible shaft (40) is connected at both ends to the rotor (34) and the drive shaft (54) via rigid coupling elements (38, 48). characterized in that the flexible shaft (40) is surrounded by a coaxially arranged screw conveyor (42) which is under a prestress. Exzenterschneckenpumpe nach Anspruch 1,
    dadurch gekennzeichnet, dass der Spannweg der Förderschnecke (42) das 0,05 bis 0,5fache des Rotordurchmessers beträgt.    Eccentric screw pump according to claim 1,
    characterized in that the clamping path of the screw conveyor (42) is 0.05 to 0.5 times the rotor diameter.         Exzenterschneckenpumpe nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass die Förderschnecke (42) unter einer positiven Vorspannung in Form einer Streckung steht    Eccentric screw pump according to claim 1 or 2,
    characterized in that the screw conveyor (42) is under a positive bias in the form of an extension         Exzenterschneckenpumpe nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass die Förderschnecke (42) unter einer negativen Vorspannung in Form einer Stauchung steht.     Eccentric screw pump according to claim 1 or 2,
    characterized in that the screw conveyor (42) is under a negative prestress in the form of a compression.         Exzenterschneckenpumpe nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Förderschnecke (42) mindestens an einem Ende ein Ringelement (44,44') aufweist.    Eccentric screw pump according to one of the preceding claims,
    characterized in that the screw conveyor (42) has an annular element (44, 44 ') at least at one end.         Exzenterschneckenpumpe nach Anspruch 5,
    dadurch gekennzeichnet, dass die biegsame Welle (40) mindestens an einem Ende ein steifes Kupplungselement (38, 48) aufweist, auf dem das Ringelement (44, 44') befestigt ist.    Eccentric screw pump according to claim 5,
    characterized in that the flexible shaft (40) has at least at one end a rigid coupling element (38, 48) on which the ring element (44, 44 ') is attached.         Exzenterschneckenpumpe nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Förderschnecke (42) formschlüssig mit dem Rotor (34) und/oder der Antriebswelle (54) verbunden ist.    Eccentric screw pump according to one of the preceding claims,
    characterized in that the screw conveyor (42) is positively connected to the rotor (34) and / or the drive shaft (54).         Exzenterschneckenpumpe nach Anspruch 1 bis 6,
    dadurch gekennzeichnet, dass die Förderschnecke (42) kraft- oder reibschlüssig mit dem Rotor (34) und/oder der Antriebswelle (54) verbunden ist.    Eccentric screw pump according to claim 1 to 6,
    characterized in that the screw conveyor (42) is non-positively or frictionally connected to the rotor (34) and / or the drive shaft (54).         Exzenterschneckenpumpe nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Förderschnecke (42) aus einem Flachmaterial ist.    Eccentric screw pump according to one of the preceding claims,
    characterized in that the screw conveyor (42) is made of a flat material.
    EP03002763A 2002-02-22 2003-02-07 Moineau Pump Expired - Lifetime EP1338796B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10207483 2002-02-22
    DE10207483A DE10207483C1 (en) 2002-02-22 2002-02-22 Eccentric peristaltic pump for viscous fluids has curved shaft connected between rotor and drive shaft with latter coaxial

    Publications (3)

    Publication Number Publication Date
    EP1338796A2 true EP1338796A2 (en) 2003-08-27
    EP1338796A3 EP1338796A3 (en) 2003-10-29
    EP1338796B1 EP1338796B1 (en) 2006-05-31

    Family

    ID=7713903

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP03002763A Expired - Lifetime EP1338796B1 (en) 2002-02-22 2003-02-07 Moineau Pump

    Country Status (4)

    Country Link
    US (1) US7040878B2 (en)
    EP (1) EP1338796B1 (en)
    AT (1) ATE328201T1 (en)
    DE (2) DE10207483C1 (en)

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    CN101796301B (en) * 2007-08-17 2013-05-15 西派克有限公司 Eccentric screw pump with split stator
    US8726981B2 (en) * 2011-06-01 2014-05-20 Baker Hughes Incorporated Tandem progressive cavity pumps
    JP2013158747A (en) * 2012-02-08 2013-08-19 Nishihara Environment Co Ltd Sludge dehydration system
    US8967985B2 (en) 2012-11-13 2015-03-03 Roper Pump Company Metal disk stacked stator with circular rigid support rings
    DE102014116779B4 (en) * 2014-11-17 2016-07-21 Pumpenfabrik Wangen Gmbh System for conveying viscous media and method for conveying a viscous medium with such a system
    DE102015104300B4 (en) * 2015-03-23 2016-12-01 Pumpenfabrik Wangen Gmbh Eccentric screw pump and method for removing a stator from such an eccentric screw pump

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    Also Published As

    Publication number Publication date
    ATE328201T1 (en) 2006-06-15
    DE50303530D1 (en) 2006-07-06
    US20040028546A1 (en) 2004-02-12
    US7040878B2 (en) 2006-05-09
    EP1338796B1 (en) 2006-05-31
    EP1338796A3 (en) 2003-10-29
    DE10207483C1 (en) 2003-06-18

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