EP0935073A1 - Elastomeric stator for eccentric screw pumps - Google Patents

Elastomeric stator for eccentric screw pumps Download PDF

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Publication number
EP0935073A1
EP0935073A1 EP99100673A EP99100673A EP0935073A1 EP 0935073 A1 EP0935073 A1 EP 0935073A1 EP 99100673 A EP99100673 A EP 99100673A EP 99100673 A EP99100673 A EP 99100673A EP 0935073 A1 EP0935073 A1 EP 0935073A1
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EP
European Patent Office
Prior art keywords
stator
flange
jacket
rings
stator according
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.)
Withdrawn
Application number
EP99100673A
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German (de)
French (fr)
Inventor
Sebastian Jäger
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.)
Artemis Kautschuk und Kunststoff Technik GmbH
Original Assignee
Artemis Kautschuk und Kunststoff Technik 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 Artemis Kautschuk und Kunststoff Technik GmbH filed Critical Artemis Kautschuk und Kunststoff Technik GmbH
Publication of EP0935073A1 publication Critical patent/EP0935073A1/en
Withdrawn legal-status Critical Current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
    • 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
    • F04C2/1075—Construction of the stationary member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making
    • Y10T29/49238—Repairing, converting, servicing or salvaging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making
    • Y10T29/4924—Scroll or peristaltic type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making
    • Y10T29/49242—Screw or gear type, e.g., Moineau type

Definitions

  • the invention is based on an elastomer stator for Eccentric screw pumps with a rigid jacket and one enclosed by the rigid jacket, made of rubber or Like existing lining that a two or multiple coiled, used to hold a rotor Surrounding cavity, with one at both stator ends Flange ring for contact with other parts of the Eccentric screw pump is located.
  • the invention has for its object elastomer save and uniform wall thicknesses of the rubber and inexpensive connection options for the stator within to ensure the pump.
  • the over its length in essentially the same wall thickness coat corresponding to the inner contour of the stator cavity is that the lining is over the stator length also essentially the same wall thickness and that at the ends of the jacket attached flange rings with the other parts (pressure and Suction connections) of the eccentric screw pump under No other parts of the eccentric screw pump interconnecting tie rods are releasably connected.
  • the two flange rings are expediently on inner circumference of the contour of the stator cavity shaped accordingly.
  • the jacket of the stator is therefore the inner contour of the Stator coiled accordingly. He has - just like that Lining - practical over the length of the stator the same wall thickness.
  • the suction and pressure side Elements of the pump frame are over the on the Flange rings attached to the stator ends with the stator jacket firmly, but releasably connected, in such a way that tie rods can be dispensed with, which at known eccentric screw pumps the aforementioned Connect elements together.
  • Stator according to the invention are thus the by Forces arising from pump operation, especially the tensile forces, transferred from the coiled stator jacket.
  • the elastomer stator consists essentially of one stare, e.g. steel jacket 1, one inside lying lining 2 enclosed by the jacket 1 Rubber or rubber-like plastics and on the Stator ends located flange rings 3, which also are made of steel.
  • the lining 2 is preferably firmly adhered to the Jacket 1 connected, but it can also only - under No binding agent - on the inside of the Coat 1 fit and thus only held positively be.
  • the liner 2 has a continuous cavity 4 for receiving a rotor 5, which is only shown in FIG. 2 is shown in cross section. To achieve a Pump effect, the rotor 5 is simply coiled Cavity 4, however, designed double coiled.
  • the lining 2 is a total has uniform wall thickness s and the jacket 1 inside and outside according to the contour of the cavity 4 is also coiled.
  • the jacket 1 also has a constant over the stator length Wall thickness M.
  • a pressure port 7 is shown in FIGS. 1 and 3.
  • the flange ring 3 is cylindrical on the outer circumference designed; the inner edge 8 of the flange ring 3 runs in the sense of the contour of the cavity 4 or in parallel and thus essentially describes one Ellipse.
  • the lining 2 jumps opposite the edge 8 radially inwards.
  • the jacket 1 - already equipped with the lining 2 - can by cutting to length from a body with a larger size Length extension can be obtained by sawing or the like.
  • This coat 1 is then both ends with a Provide flange ring 3, which is attached through the outside Weld seams 11 is attached so as to be tight and firm connection between the jacket 1 and the two To create flange rings 3.
  • FIG. 1 provided below a bolt connection, which at 12 What is indicated, of course, the necessary holes must be provided in the flanges.
  • This connection can also by clamp-like bracket 13 are replaced, the screws are designated 14 and the edge of the two flanges 3 and 15 spread.
  • the detachable is also advantageous Connection according to Fig. 3.
  • end faces of the lining 2 and the jacket 1 is in a preferably axially normal Level are or are arranged flush. Can also from fluidic reasons the flange ring 3 after outside be conically widening.

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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)

Abstract

The stator has a rigid jacket with a lining of e.g. rubber. The jacket (1) has constant wall thickness (M), and is coiled according to the inner contour of the stator chamber (4). The lining (2) also has constant wall thickness (S) over the length of the stator. The flange rings (3) fastened to the ends of the jacket are removably connected to the remaining pump components (7), without requiring the tie rods connecting these components.

Description

Die Erfindung geht aus von einem Elastomerstator für Exzenterschneckenpumpen mit einem starren Mantel und einer von dem starren Mantel umschlossenen, aus Gummi od. dgl. bestehenden Auskleidung, die einen zwei- oder mehrfach gewendelten, zur Aufnahme eines Rotors dienenden Hohlraum umgibt, wobei sich an beiden Statorenden ein Flanschring zur Anlage an übrigen Teilen der Exzenterschneckenpumpe befindet.The invention is based on an elastomer stator for Eccentric screw pumps with a rigid jacket and one enclosed by the rigid jacket, made of rubber or Like existing lining that a two or multiple coiled, used to hold a rotor Surrounding cavity, with one at both stator ends Flange ring for contact with other parts of the Eccentric screw pump is located.

Bei den bekannten Statoren dieser Ausführung ist der Stator an seinem äusseren Umfang zylindrisch gestaltet und an seinen Enden nach oben abgebogen, um zu den übrigen Teilen der Exzenterschneckenpumpe eine Verbindung herstellen zu können. Die Verbindungselemente sind somit am äusseren und inneren Umfang kreisförmig gestaltet. Ausserdem wird angesichts eines zylindrischen Rotormantels und der Wendelung innerhalb des Stators eine Gummimenge benötigt, die noch zu unterschiedlichen Wandstärken des Gummis führt.In the known stators of this version The outer circumference of the stator is cylindrical and bent up at its ends to join the other parts of the eccentric screw pump a connection to be able to manufacture. The connecting elements are thus circular in shape on the outer and inner circumference. In addition, given a cylindrical Rotor shell and the winding inside the stator one Amount of rubber needed that is still too different Wall thicknesses of the rubber leads.

Der Erfindung liegt die Aufgabe zugrunde, Elastomer einzusparen und gleichmässige Wandstärken des Gummis und günstige Anschlussmöglichkeiten für den Stator innerhalb der Pumpe zu gewährleisten.The invention has for its object elastomer save and uniform wall thicknesses of the rubber and inexpensive connection options for the stator within to ensure the pump.

Zur Lösung dieser Aufgabe ist erfindungsgemäss vorgesehen, dass der über seine Länge hinweg im wesentlichen die gleiche Wandstärke aufweisende Mantel der Innenkontur des Statorhohlraumes entsprechend gewendelt ist, dass die Auskleidung über die Statorlänge hinweg ebenfalls im wesentlichen die gleiche Wandstärke aufweist und dass die an den Enden des Mantels befestigten Flanschringe mit den übrigen Teilen (Druck- und Sauganschlüsse) der Exzenterschneckenpumpe unter Verzicht auf die übrigen Teile der Exzenterschneckenpumpe miteinander verbindenden Zuganker lösbar verbunden sind. Dabei sind zweckmässigerweise die beiden Flanschringe am inneren Umfang der Kontur des Statorhohlraumes entsprechend geformt.To achieve this object is according to the invention provided that the over its length in essentially the same wall thickness coat corresponding to the inner contour of the stator cavity is that the lining is over the stator length also essentially the same wall thickness and that at the ends of the jacket attached flange rings with the other parts (pressure and Suction connections) of the eccentric screw pump under No other parts of the eccentric screw pump interconnecting tie rods are releasably connected. The two flange rings are expediently on inner circumference of the contour of the stator cavity shaped accordingly.

Der Mantel des Stators ist also der Innenkontur des Stators entsprechend gewendelt. Er hat - ebenso die Auskleidung - über die Länge des Stators hinweg praktisch die gleiche Wandstärke. Die saug- und druckseitigen Elemente des Pumpengestells sind über die an den Statorenden befestigten Flanschringe mit dem Statormantel fest, jedoch lösbar verbunden, und zwar in der Weise, dass auf Zuganker verzichtet werden kann, die bei bekannten Exzenterschneckenpumpen die vorgenannten Elemente miteinander verbinden. Bei dem erfindungsgemässen Stator werden also die durch den Pumpenbetrieb entstehenden Kräfte, insb. die Zugkräfte, vom gewendelten Statormantel übertragen.The jacket of the stator is therefore the inner contour of the Stator coiled accordingly. He has - just like that Lining - practical over the length of the stator the same wall thickness. The suction and pressure side Elements of the pump frame are over the on the Flange rings attached to the stator ends with the stator jacket firmly, but releasably connected, in such a way that tie rods can be dispensed with, which at known eccentric screw pumps the aforementioned Connect elements together. In which Stator according to the invention are thus the by Forces arising from pump operation, especially the tensile forces, transferred from the coiled stator jacket.

Weitere Einzelheiten der Erfindung werden anhand der Zeichnung erläutert, in der ein Ausführungsbeispiel der Erfindung dargestellt ist.Further details of the invention are based on the Drawing explained in which an embodiment of the Invention is shown.

Es zeigen :

  • Fig. 1 den druckseitigen, an einem Druckstutzen der Pumpe befestigten Endabschnitt eines Elastomerstators im Längsschnitt, und zwar im eingebauten Zustand,
  • Fi. 2 den von seinem Druckstutzen gelösten Stator gemäss Fig. 1 in Richtung des Pfeiles II gesehen und
  • Fig. 3 eine Teilseitenansicht einer Verbindungsstelle zwischen dem druckseitigen Endabschnitt eines Stators und dem zugehörigen Druckstutzen der Pumpe.
    • Show it :
  • 1 is a longitudinal section of the pressure-side end section of an elastomer stator fastened to a pressure port of the pump, namely in the installed state,
  • Fi. 2 seen the stator released from its pressure port according to FIG. 1 in the direction of arrow II and
  • Fig. 3 is a partial side view of a connection point between the pressure-side end portion of a stator and the associated pressure port of the pump.

    • Der Elastomerstator besteht im wesentlichen aus einem starren, z.B. aus Stahl gefertigten Mantel 1, einer innen liegenden, vom Mantel 1 umschlossenen Auskleidung 2 aus Gummi oder gummiähnlichen Kunststoffen und an den Statorenden befindlichen Flanschringen 3, die ebenfalls aus Stahl gefertigt sind. The elastomer stator consists essentially of one stare, e.g. steel jacket 1, one inside lying lining 2 enclosed by the jacket 1 Rubber or rubber-like plastics and on the Stator ends located flange rings 3, which also are made of steel.

    Die Auskleidung 2 wird vorzugsweise festhaftend mit dem Mantel 1 verbunden, sie kann aber auch lediglich - unter Verzicht auf ein Bindemittel - an der Innenseite des Mantels 1 anliegen und somit nur formschlüssig gehalten sein. Die Auskleidung 2 hat einen durchgehenden Hohlraum 4 zur Aufnahme eines Rotors 5, der lediglich in Fig. 2 im Querschnitt dargestellt ist. Zur Erzielung eines Pumpeffektes ist der Rotor 5 einfach gewendelt, der Hohlraum 4 hingegen doppelt gewendelt gestaltet.The lining 2 is preferably firmly adhered to the Jacket 1 connected, but it can also only - under No binding agent - on the inside of the Coat 1 fit and thus only held positively be. The liner 2 has a continuous cavity 4 for receiving a rotor 5, which is only shown in FIG. 2 is shown in cross section. To achieve a Pump effect, the rotor 5 is simply coiled Cavity 4, however, designed double coiled.

    Wichtig ist, dass die Auskleidung 2 insgesamt eine gleichmässige Wandstärke s aufweist und der Mantel 1 innen und aussen der Kontur des Hohlraumes 4 entsprechend ebenfalls gewendelt ist. Der Mantel 1 hat also ebenfalls über die Statorlänge hinweg eine gleichbleibende Wandstärke M.It is important that the lining 2 is a total has uniform wall thickness s and the jacket 1 inside and outside according to the contour of the cavity 4 is also coiled. The jacket 1 also has a constant over the stator length Wall thickness M.

    An der Stirnfläche 6 des Mantels 1 liegt ein aus Stahl od. dgl. bestehender Flanschring 3 an, der die Verbindung zwischen dem Stator einerseits und dem Pumpengestell an der Saugseite bzw. Druckseite andererseits herstellen soll. Dargestellt ist in Fig. 1 und 3 ein Druckstutzen 7.On the end face 6 of the jacket 1 is a steel or the like. Existing flange ring 3, which the connection between the stator on the one hand and the pump frame the suction side or pressure side on the other hand should. A pressure port 7 is shown in FIGS. 1 and 3.

    Am äusseren Umfang ist der Flanschring 3 zylindrisch gestaltet; die innengelegene Kante 8 des Flanschringes 3 verläuft jedoch im Sinne der Kontur des Hohlraumes 4 bzw. parallel dazu und beschreibt somit im wesentlichen eine Ellipse. Gegenüber der Kante 8 springt die Auskleidung 2 radial nach innen vor. The flange ring 3 is cylindrical on the outer circumference designed; the inner edge 8 of the flange ring 3 runs in the sense of the contour of the cavity 4 or in parallel and thus essentially describes one Ellipse. The lining 2 jumps opposite the edge 8 radially inwards.

    Der Mantel 1 -bereits mit der Auskleidung 2 ausgestattet- kann durch Ablängen von einem Körper mit grösserer Längenerstreckung durch Absägen od. dgl. gewonnen werden. Dieser Mantel 1 wird dann beidendig mit einem Flanschsring 3 versehen, der durch aussen angebrachte Schweissnähte 11 befestigt wird, um so eine dichte und feste Verbindung zwischen dem Mantel 1 und den beiden Flanschringen 3 zu schaffen.The jacket 1 - already equipped with the lining 2 - can by cutting to length from a body with a larger size Length extension can be obtained by sawing or the like. This coat 1 is then both ends with a Provide flange ring 3, which is attached through the outside Weld seams 11 is attached so as to be tight and firm connection between the jacket 1 and the two To create flange rings 3.

    Wichtig ist nun, dass die an den Statorenden befindlichen Flanschringe 3 fest, jedoch lösbar mit den angrenzenden Teilen der Pumpe verbunden werden können. Aufgrund des Ausführungsbeispieles in der Zeichnung ist gemäss Fig. 1 unten eine Schraubbolzenverbindung vorgesehen, die bei 12 angedeutet ist, wozu natürlich die erforderlichen Löcher in den Flanschen vorgesehen sein müssen. Diese Verbindung kann aber auch durch schraubzwingenähnliche Bügel 13 ersetzt werden, deren Schrauben mit 14 bezeichnet sind und die den Rand der beiden Flansche 3 und 15 übergreifen. Vorteilhaft ist ferner die lösbare Verbindung gemäss Fig. 3. Hier ist an einem Flansch ein Schraubbolzen 16 schwenkbar gelagert, der sich in der Wirkstellung gemäss Fig. 3 in randoffenen Ausnehmungen 17 beider Flansche 3, 15 befindet und zum Lösen der Verbindung bei gelockerter Schraubmutter 18 im Sinne des Pfeiles 19 so verschwenkbar ist, dass die Flansche 3, 15 gelöst werden können.It is now important that those located at the stator ends Flange rings 3 fixed, but detachable with the adjacent ones Parts of the pump can be connected. Because of the The exemplary embodiment in the drawing is shown in FIG. 1 provided below a bolt connection, which at 12 What is indicated, of course, the necessary holes must be provided in the flanges. This connection can also by clamp-like bracket 13 are replaced, the screws are designated 14 and the edge of the two flanges 3 and 15 spread. The detachable is also advantageous Connection according to Fig. 3. Here is a flange Bolt 16 pivotally mounted in the 3 in open-ended recesses 17 both flanges 3, 15 is located and for releasing the Connection with loosened screw nut 18 in the sense of Arrow 19 can be pivoted so that the flanges 3, 15 can be solved.

    Es sei erwähnt, dass die Stirnflächen der Auskleidung 2 und des Mantels 1 sich in einer vorzugsweise achsnormalen Ebene befinden bzw. bündig angeordnet sind. Auch kann aus strömungstechnischen Gründen der Flanschring 3 nach aussen sich konisch erweiternd ausgeführt sein.It should be noted that the end faces of the lining 2 and the jacket 1 is in a preferably axially normal Level are or are arranged flush. Can also from fluidic reasons the flange ring 3 after outside be conically widening.

    Claims (12)

    Elastomerstator für Exzenterschneckenpumpen mit einem starren Mantel und einer von dem Mantel umschlossenen, aus Gummi od. dgl. bestehenden Auskleidung, die einen zwei- oder mehrfach gewendelten, zur Aufnahme eines Rotors dienenden Hohlraum umgibt, wobei sich an beiden Statorenden ein Flanschring zur Anlage an übrigen Teilen der Exzenterschneckenpumpe befindet, dadurch gekennzeichnet, dass der über seine Länge hinweg im wesentlichen die gleiche Wandstärke (M) aufweisende Mantel (1) der Innenkontur des Statorhohlraumes (4) entsprechend gewendelt ist, dass die Auskleidung (2) über die Statorlänge hinweg ebenfalls im wesentlichen die gleiche Wandstärke (s) aufweist und dass die an den Enden des Mantels befestigten Flanschringe (3) mit den übrigen Teilen der Exzenterschneckenpumpe unter Verzicht auf die übrigen Teile (7) miteinander verbindenden Zugankern lösbar verbunden sind.Elastomer stator for progressing cavity pumps with one rigid coat and one enclosed by the coat, made of rubber or the like two or more coils, to accommodate one Surrounding rotor serving cavity, with both Stator ends a flange ring for contact with other parts the eccentric screw pump characterized in that over its length in essentially the same wall thickness (M) Sheath (1) of the inner contour of the stator cavity (4) is coiled accordingly that the lining (2) over the stator length is also essentially the same has the same wall thickness (s) and that at the ends of the jacket attached flange rings (3) with the rest Parts of the eccentric screw pump without the other parts (7) connecting tie rods are releasably connected. Stator nach Anspruch 1, dadurch gekennzeichnet, dass die beiden Flanschringe (3) am inneren Umfang der Kontur des Statorhohlraumes (4) entsprechend geformt sind. Stator according to claim 1, characterized in that the two flange rings (3) on the inner circumference of the contour of the stator cavity (4) are shaped accordingly. Stator nach Anspruch 2, dadurch gekennzeichnet, dass die von dem Flanschring (3) umschlossene Ausnehmung im wesentlichen elliptisch gestaltet ist.Stator according to claim 2, characterized in that the recess in the flange ring (3) is essentially elliptical. Stator nach Anspruch 1, dadurch gekennzeichnet, dass die Flanschringe (3) am äusseren Umfang zumindest in etwa kreisförmig gestaltet sind.Stator according to claim 1, characterized in that the flange rings (3) on the outer circumference at least approximately are circular. Stator nach Anspruch 1, dadurch gekennzeichnet, dass der Flanschring (3) an seinem inneren Umfang im wesentlichen parallel zur Kontur des Statorhohlraumes (4) verläuft.Stator according to claim 1, characterized in that the flange ring (3) on its inner circumference in essentially parallel to the contour of the stator cavity (4) runs. Verfahren zur Herstellung von Elastomerstatoren nach Anspruch 1, dadurch gekennzeichnet, dass der Statormantel durch Abtrennen von einem Mantelkörper grösserer Längenerstreckung gewonnen und dann mit den Flanschringen versehen wird.Process for the production of elastomer stators Claim 1, characterized in that the stator jacket by removing larger from a jacket body Length extension won and then with the flange rings is provided. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Statormantel (1) von einem Mantelkörper abgetrennt wird, der mit einer Elastomerauskleidung versehen ist. A method according to claim 5, characterized in that the stator casing (1) from a casing body is separated with an elastomer lining is provided. Stator nach Anspruch 1, dadurch gekennzeichnet, dass der Flanschring (3) am inneren Umfang sich nach aussen hin konisch erweiternd ausgebildet ist.Stator according to claim 1, characterized in that the flange ring (3) on the inner circumference outwards is designed to expand conically. Stator nach Anspruch 1, dadurch gekennzeichnet, dass die Stirnfläche der Auskleidung (2) und diejenige des Mantels (1) in einer vorzugsweise achsnormalen ( in Bezug auf die Statorlängsmittelachse ) Ebene liegen.Stator according to claim 1, characterized in that the end face of the lining (2) and that of the Jacket (1) in a preferably axis-normal (in relation on the stator longitudinal center axis) plane. Stator nach Anspruch 1, dadurch gekennzeichnet, dass die übrigen Teile (7) mit dem Flanschring (3) durch diese Elemente durchsetzende Schraubbolzen (12) verbunden sind.Stator according to claim 1, characterized in that the remaining parts (7) with the flange ring (3) through them Elements passing through bolts (12) are connected. Stator nach Anspruch 1, dadurch gekennzeichnet, dass die übrigen Teile (7) mit den Flanschringen (3) durch diese Ringe aussen übergreifende, lösbare Bügel (13) verbunden sind.Stator according to claim 1, characterized in that the remaining parts (7) with the flange rings (3) detachable brackets overlapping these rings (13) are connected. Stator nach Anspruch 1, dadurch gekennzeichnet, dass die übrigen Teile (7) mit den Flanschringen (3) durch schwenkbare Schraubbolzen (16) verbunden sind, die sich in der Wirkstellung in einer randoffenen Ausnehmung (17) der Flanschringe (3) bzw. der übrigen Teile (7) befinden.Stator according to claim 1, characterized in that the remaining parts (7) with the flange rings (3) pivotable bolts (16) are connected in the active position in an open-edged recess (17) the flange rings (3) or other parts (7).
    EP99100673A 1998-02-04 1999-01-15 Elastomeric stator for eccentric screw pumps Withdrawn EP0935073A1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19804259A DE19804259A1 (en) 1998-02-04 1998-02-04 Elastomer stator for eccentric screw pumps
    DE19804259 1998-02-04

    Publications (1)

    Publication Number Publication Date
    EP0935073A1 true EP0935073A1 (en) 1999-08-11

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    Application Number Title Priority Date Filing Date
    EP99100673A Withdrawn EP0935073A1 (en) 1998-02-04 1999-01-15 Elastomeric stator for eccentric screw pumps

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    US (1) US6162032A (en)
    EP (1) EP0935073A1 (en)
    DE (1) DE19804259A1 (en)

    Cited By (1)

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    US10480506B2 (en) 2014-02-18 2019-11-19 Vert Rotors Uk Limited Conical screw machine with rotating inner and outer elements that are longitudinally fixed

    Families Citing this family (14)

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    US6162032A (en) 2000-12-19

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