EP0935071B1 - Elastomeric stator for eccentric screw pumps - Google Patents
Elastomeric stator for eccentric screw pumps Download PDFInfo
- Publication number
- EP0935071B1 EP0935071B1 EP99100630A EP99100630A EP0935071B1 EP 0935071 B1 EP0935071 B1 EP 0935071B1 EP 99100630 A EP99100630 A EP 99100630A EP 99100630 A EP99100630 A EP 99100630A EP 0935071 B1 EP0935071 B1 EP 0935071B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- connection
- elastomeric
- casing
- connection ring
- 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
Links
Images
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
Definitions
- the invention relates to an elastomer stator for a Eccentric screw pump, the elastomer stator made of an elastomer, of a rigid jacket has enclosed lining which with a for Inclusion of a rotor serving two or more times coiled cavity is provided, and wherein the Ends of the stator connecting rings to unite with remaining parts of the eccentric screw pump.
- the invention has for its object stators type mentioned in the beginning so that they on the one hand about the advantages of an inside and outside coiled coat and on the other hand also for such pumps are suitable that have a circular Require connection to the stator ends.
- connection rings at the ends of one of the Inner contour of the stator coiled accordingly Stator sheath with a practical over the length of the sheath even wall thickness attached the Connection rings on the inner edge of one of the inner contours of the Stator have at least an approximate course.
- the invention is based on a stator jacket, which is the same over its circumference and length Has wall thickness and accordingly in a simple manner a cylindrical tube body by pressing from the inside can be manufactured here.
- An editing of the End sections of this jacket training is not required, these can rather be the coils be shaped accordingly and accordingly when viewed its face is roughly the shape of an ellipse exhibit.
- To use such a coat in general can he receives flange-like connection rings that from the geometric circular ring shape and in Deviation from this design in its inner scope or on the inner edge of the inner contour of the elastic lining accordingly at least approximately is elliptical.
- the Stator jacket also with its face blunt on the Apply to the inside of the connection ring and there be attached, which is preferably by welding or. Like. Is achieved.
- stator designed in this way can be used universally; he can therefore also used in such progressing cavity pumps be using the usual stators cylindrical outer surface must be equipped.
- the stator according to the invention opens up another Proposal according to the invention the possibility Stator jacket bodies in longer lengths, and indeed to be manufactured with elastic lining inside, by shorter bodies of greater length Separate ends with a normal cut. These ends are then used directly as a jacket and in According to the invention equipped with the connection rings. Also already provided with elastic inner lining Workpieces obtained in the aforementioned sense can even through weld seams on her back with the Connection rings are firmly connected.
- 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 connection rings 7, which also are made of steel.
- the lining 2 is preferably adhered to the Sheath 1 connected, but it can also only - under No binding agent - on the inside of the Coat 1 fit and thus only held positively his.
- the lining has a continuous cavity 4 for receiving a rotor 5, which is only in Fig. 2 in Cross section is shown. 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.
- connection ring 7 which the Connection between the stator on the one hand and the Pump frame on the suction side or pressure side on the other hand.
- the connecting ring 7 is cylindrical on the outer circumference designed; the inner edge 8 of the connecting ring 7, however, runs in the sense of the contour of the cavity 4 or in parallel and essentially describes an ellipse. Compared to edge 8, however, jumps Lining 2 radially inwards.
- connection ring 7 Concentric to the outer circumferential surface of the Connection ring 7 is located on the outside of this ring an annular groove 9, which serves to receive an O-ring 10.
- the stator shown is preferably between two flange-like parts of the Pump held; the outside diameter of these parts should thereby that of the two envisaged Correspond to connection rings 7, the 0-ring 10 deformed and creates a seal. If necessary. can he Connection ring 7 in the area of its outer circumference too with screw holes or similar connecting means be provided to as detachable a connection as possible to create the other parts of the pump.
- the jacket 1 can already be equipped with the lining 2 by cutting from a body with a larger size Length extension by sawing or the like can be obtained. This coat 1 is then both ends with a Provide connection ring 7, which is attached through the outside Welds 12 is attached so as to be tight and firm connection between the jacket 1 and the two To create connection rings 7.
- connection ring 7 on the inner circumference - as indicated at 11 - conical externally expanding is
- connection ring 7 on one, but preferably also on provided at both ends of the stator.
- Fig. 1 and 2 corresponds to the outside diameter of the Connecting ring 7 of the greatest amplitude of the jacket 1, So it does not protrude in the radial direction.
- the weld 12 is also intended.
- the connecting ring 7 is used for fastening a metal sleeve 14 in coaxial with the stator Arrangement at its rear end by a Weld 15 is connected to the connecting ring 7 and a screw thread 16 in the area of its front end inside, but possibly also outside.
- This Connection thread can also be designed conically.
- the Metal sleeve 14 also has an outside with the Connection ring 7 matching outer diameter and an inside diameter that is the largest Cross extention of the peripheral surface 13 is determined.
- the subsequent attachment of the metal sleeve 14 with Thread has the advantage that the thread in a later incised element to be connected to the stator can be.
- Connection ring 7 also causes the Connection ring 7 a favorable transition from the outside coiled stator jacket 1 to an outer cylindrical Connection hub.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Die Erfindung betrifft einen Elastomerstator für eine Exzenterschneckenpumpe, wobei der Elastomerstator eine aus einem Elastomer bestehende, von einem starren Mantel umschlossene Auskleidung aufweist, die mit einem zur Aufnahme eines Rotors dienenden, zwei oder mehrfach gewendelten Hohlraum versehen ist, und wobei sich an den Enden des Stators Anschlussringe zur Vereinigung mit übrigen Teilen der Exzenterschneckenpumpe befinden.The invention relates to an elastomer stator for a Eccentric screw pump, the elastomer stator made of an elastomer, of a rigid jacket has enclosed lining which with a for Inclusion of a rotor serving two or more times coiled cavity is provided, and wherein the Ends of the stator connecting rings to unite with remaining parts of the eccentric screw pump.
Bei den bekannten Statoren dieser Ausbildung sind die Anschlussringe flanschartig als Kreisringe ausgeführt, um günstige Befestigungsmöglichkeiten an den angrenzenden Teilen der Exzenterschneckenpumpe z.B. am Pumpengestell zu schaffen. Die Verwendung dieser Kreisringe für Statoren, deren Mäntel über die Länge hinweg von gleicher Wandstärke sind und demgemäss aussen und innen gewendelt sind, ist nicht möglich, da sie einen ordnungsgemässen Anschluss des Stators an den übrigen Teilen der Pumpe nicht zustandekommen lassen. Aus diesem Grunde ist man gezwungen, den Mantel der letztgenannten Statoren an seinen Enden bleibend zu verformen, um ihm dort eine Zylindergestalt zu vermitteln. Es versteht sich, dass diese Verformung besondere Arbeitsgänge zur Folge hat.In the known stators of this training Connection rings flange-shaped as circular rings, um cheap mounting options on the adjacent Parts of the eccentric screw pump e.g. on the pump frame to accomplish. The use of these circular rings for Stators, their sheaths of the same length Wall thickness are and accordingly coiled outside and inside are not possible as they are a proper one Connection of the stator to the other parts of the pump do not let come. For this reason you are forced to put on the mantle of the latter stators permanently deforming his ends to give him one there To convey cylinder shape. It goes without saying that this deformation results in special operations.
Eine im wesentlichen derartige Ausführung der Stators einer Exzenterschneckenpumpe ist aus FR1592149A bekannt.An essentially such design of the stator Eccentric screw pump is known from FR1592149A.
Der Erfindung liegt die Aufgabe zugrunde, Statoren der eingangs erwähnten Art so auszubilden, dass sie einerseits über die Vorteile eines innen und aussen gewendelten Mantels verfügen und andererseits auch für solche Pumpen geeignet sind, die einen kreisrunden Anschluss an den Statorenden verlangen.The invention has for its object stators type mentioned in the beginning so that they on the one hand about the advantages of an inside and outside coiled coat and on the other hand also for such pumps are suitable that have a circular Require connection to the stator ends.
Zur Lösung dieser Aufgabe sind erfindungsgemäss die für sich hergestellten Anschlussringe an den Enden eines der Innenkontur des Stators entsprechend gewendelten Statormantels mit einer über die Mantellänge praktisch gleichmässigen Wandstärke befestigt, wobei die Anschlussringe am inneren Rand einen der Innenkontur des Stators zumindest angenäherten Verlauf aufweisen.To solve this problem, according to the invention produced connection rings at the ends of one of the Inner contour of the stator coiled accordingly Stator sheath with a practical over the length of the sheath even wall thickness attached, the Connection rings on the inner edge of one of the inner contours of the Stator have at least an approximate course.
Demgemäss geht die Erfindung von einem Statormantel aus, der über seinen Umfang und seine Länge hinweg die gleiche Wandstärke aufweist und demgemäss in einfacher Weise aus einem zylindrischen Rohrkörper durch Verpressen von innen her gefertigt werden kann. Eine Bearbeitung der Endabschnitte dieser Mantelausbildung ist nicht erforderlich, diese können vielmehr den Wendeln entsprechend geformt sein und demgemäss bei Betrachtung ihrer Stirnseite in etwa die Gestalt einer Ellipse aufweisen. Um einen solchen Mantel allgemein nutzen zu können, erhält er flanschartige Anschlussringe, die von der geometrischen Kreisringform abweichen und in Abweichung von dieser Gestaltung an ihrem inneren Umfang bzw. am innen gelegenen Rand der Innenkontur der elastischen Auskleidung entsprechend zumindest in etwa elliptisch gestaltet ist. Aus diesenm Grunde kann der Statormantel auch mit seiner Stirnfläche stumpf an der Innenseite des Anschlussringes anliegen und dort befestigt sein, was vorzugsweise durch Schweissen od. dgl. erreicht wird.Accordingly, the invention is based on a stator jacket, which is the same over its circumference and length Has wall thickness and accordingly in a simple manner a cylindrical tube body by pressing from the inside can be manufactured here. An editing of the End sections of this jacket training is not required, these can rather be the coils be shaped accordingly and accordingly when viewed its face is roughly the shape of an ellipse exhibit. To use such a coat in general can, he receives flange-like connection rings that from the geometric circular ring shape and in Deviation from this design in its inner scope or on the inner edge of the inner contour of the elastic lining accordingly at least approximately is elliptical. For this reason the Stator jacket also with its face blunt on the Apply to the inside of the connection ring and there be attached, which is preferably by welding or. Like. Is achieved.
Der so ausgeführte Stator ist universell nutzbar; er kann daher auch bei solchen Exzenterschneckenpumpen eingesetzt werden, die an sich für die üblichen Statoren mit zylindrischer Aussenfläche ausgerüstet werden müssen.The stator designed in this way can be used universally; he can therefore also used in such progressing cavity pumps be using the usual stators cylindrical outer surface must be equipped.
Der erfindungsgemässe Stator eröffnet nach einem weiteren Vorschlag gemäss Erfindung die Möglichkeit, Statormantelkörper in grösseren Längen, und zwar sogar mit innen liegender elastischer Auskleidung zu fertigen, um von diesen Körpern grösserer Längenerstreckung kürzere Enden durch einen Normalschnitt abzutrennen. Diese Enden werden dann unmittelbar als Mantelkörper benutzt und im Sinne der Erfindung mit den Anschlussringen ausgestattet. Auch bereits mit elastischer Innenauskleidung versehene, im vorerwähnten Sinne gewonnene Werkstücke können sogar noch durch Schweissnähte auf ihrem Rücken mit den Anschlussringen fest verbunden werden.The stator according to the invention opens up another Proposal according to the invention the possibility Stator jacket bodies in longer lengths, and indeed to be manufactured with elastic lining inside, by shorter bodies of greater length Separate ends with a normal cut. These ends are then used directly as a jacket and in According to the invention equipped with the connection rings. Also already provided with elastic inner lining Workpieces obtained in the aforementioned sense can even through weld seams on her back with the Connection rings are firmly connected.
Weitere Einzelheiten der Erfindung werden anhand der Zeichnung erläutert, in der Ausführungsbeispiele der Erfindung dargestellt sind. Further details of the invention are based on the Drawing explained in the embodiments of the Invention are shown.
Es zeigen :
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 Anschlussringen 7, die ebenfalls
aus Stahl gefertigt sind.The elastomer stator consists essentially of one
stare, e.g. steel jacket 1, one inside
lying
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 hat einen durchgehenden Hohlraum 4
zur Aufnahme eines Rotors 5, der nur 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
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
An der Stirnfläche 6 des Mantels 1 liegt ein aus Stahl
od. dgl. bestehender Anschlussring 7 an, der die
Verbindung zwischen dem Stator einerseits und dem
Pumpengestell an der Saugseite bzw. Druckseite
andererseits herstellen soll.On the end face 6 of the jacket 1 is a steel
od. Like
Am äusseren Umfang ist der Anschlussring 7 zylindrisch
gestaltet; die innengelegene Kante 8 des Anschlussringes
7 verläuft jedoch im Sinne der Kontur des Hohlraumes 4
bzw. parallel dazu und beschreibt somit im wesentlichen
eine Ellipse. Gegenüber der Kante 8 springt jedoch die
Auskleidung 2 radial nach innen vor.The connecting
Konzentrisch zur äusseren Umfangsfläche des
Anschlussringes 7 befindet sich aussen an diesen Ring
eine Ringnut 9, die zur Aufnahme eines O-Ringes 10 dient.Concentric to the outer circumferential surface of the
Vorzugsweise wird der dargestellte Stator zwischen zwei
flanschartigen, durch Zuganker verbundenen Teilen der
Pumpe gehalten; der Aussendurchmesser dieser Teile sollte
dabei demjenigen der beidendig vorgesehenen
Anschlussringe 7 entsprechen, wobei der 0-Ring 10
verformt und eine Abdichtung herbeiführt. Ggfs. kann der
Anschlussring 7 im Bereich seines äuseren Umfangs auch
mit Schraublöchern oder ähnlichen Verbindungsmitteln
versehen sein, um eine möglichst lösbare Verbindung zu
den anderen Teilen der Pumpe zu schaffen.The stator shown is preferably between two
flange-like parts of the
Pump held; the outside diameter of these parts should
thereby that of the two envisaged
Correspond to
Der Mantel 1 -bereits mit der Auskleidung 2 ausgestattetkann
durch Ablängen von einem Körper mit grösserer
Längenerstreckung durch Absägen od. dgl. gewonnen werden.
Dieser Mantel 1 wird dann beidendig mit einem
Anschlussring 7 versehen, der durch aussen angebrachte
Schweissnähte 12 befestigt wird, um so eine dichte und
feste Verbindung zwischen dem Mantel 1 und den beiden
Anschlussringen 7 zu schaffen.The jacket 1 can already be equipped with the
Aus strömungstechnischen Gründen kann der Anschlussring 7
am inneren Umfang - wie bei 11 angedeutet - sich konisch
nach aussen hin erweiternd ausgeführt sein.For fluidic reasons, the
Bei der Ausführungsform gemäss Fig. 3 ist ebenfalls ein
Anschlussring 7 an einem, vorzugsweise aber ebenfalls an
beiden Enden des Stators vorgesehen. Im Gegensatz zu Fig.
1 und 2 entpricht jedoch der Aussendurchmesser des
Anschlussringes 7 der grössten Amplitude des Mantels 1,
überragt diesen in radialer Richtung also nicht. Zudem
ist die innere, in etwa elliptische Umfangfläche 13 des
Anschlussringes 7 mit der Innenfläche 4' der Auskleidung
2 bündig. Ein Sprung oder Absatz sind also im Übergang
nicht vorhanden. Die Schweissnaht 12 ist ebenfalls
vorgesehen. 3 is also a
Der Anschlussring 7 gemäss Fig. 3 dient zur Befstigung
einer Metallhülse 14 in zum Stator gleichachsiger
Anordnung, die an ihrem hinteren Ende durch eine
Schweissnaht 15 mit dem Anschlussring 7 verbunden ist und
im Bereich ihres vorderen Endes ein Schraubgewinde 16
innen, ggfs. aber auch aussen aufweist. Dieses
Anschlussgewinde kann auch konisch gestaltet sein. Die
Metallhülse 14 hat zudem einen aussen mit dem
Anschlussring 7 übereinstimmenden Aussendurchmesser und
einen Innendurchmesser, der durch die grösste
Querersteckung der Umfangsfläche 13 bestimmt ist.The connecting
Statoren gemäss Fig. 3 kommen vorwiegend für die Absenkung in Erdbohrungen z.B. bei der Erdölgewinnung in Betracht. Sie haben den Vorteil, dass an einem Ende des Stators die Saugarmaturen und am anderen Ende des Stators die das Antriebsgestänge aufnehmenden Rohre angeschraubt werden können. Die Erfindung ist jedoch nicht an diese Anwendung gebunden.3 mainly come for the Lowering in earth bores e.g. in oil production in Consideration. They have the advantage that at one end of the The suction fittings and at the other end of the stator screwed on the tubes receiving the drive linkage can be. However, the invention is not related to this Application bound.
Die nachträgliche Anbringung der Metallhülse 14 mit
Gewinde hat den Vorteil, dass das Gewinde in ein später
mit dem Stator zu verbindendes Element eingeschnitten
werden kann.The subsequent attachment of the
Auch bei der Ausführung gemäss Fig. 2 bewirkt der Anschlussring 7 einen günstigen Übergang von dem aussen gewendelten Statormantel 1 zu einem aussen zylindrischen Anschlussglied.2 also causes the Connection ring 7 a favorable transition from the outside coiled stator jacket 1 to an outer cylindrical Connection hub.
Claims (12)
- Elastomeric stator for a Moineau pump, the elastomeric stator having a lining formed from an elastomeric material and surrounded by a rigid casing, said lining surrounding a hollow chamber which is spirally configured two or more times and serves to accommodate a rotor, and a connection ring being preferably situated at both stator ends for joining the elastomeric stator to the remaining parts of the Moineau pump, characterised in that the connection rings (7), produced per se, are secured to the ends of a casing (1), which is spirally configured to correspond to the internal contour of the stator and has a practically uniformly great wall thickness over the casing length, the connection rings (7) having, at the inner circumference, a configuration which at least approximates to the internal contour of the elastomeric stator.
- Stator according to claim 1, characterised in that the connection rings have at least a substantially circular configuration at the outer circumference.
- Stator according to claim 1, characterised in that there are two or more circumferential grooves (9) for accommodating a sealing ring (10) on the external side of the connection rings (7).
- Stator according to claim 1, characterised in that, at its inner circumference, the connection ring (7) extends substantially parallel to the internal contour of the elastomeric stator.
- Method of producing elastomeric stators according to claim 1, characterised in that the stator casing is obtained by separation from a casing body having a greater longitudinal extension and is then provided with the connection rings.
- Method according to claim 5, characterised in that the stator casing is separated from a casing body which is provided with an elastomeric lining.
- Stator according to claim 1, characterised in that the connection ring (7) has an outwardly conically widening configuration (11) at the inner circumference.
- Stator according to claim 1, characterised in that the external diameter of the connection ring (7) is practically determined by the greatest amplitude of the spiral configuration of the stator casing (1).
- Stator according to claim 1, characterised in that the connection ring (7) is used for the firm connection (15) of hollow-cylindrical tubular portions or respectively sleeves, which may extend coaxially relative to the stator and may be provided with thread (16) internally and/or externally.
- Stator according to claims 8 and 9, characterised in that the cylindrical tubular portions or respectively sleeves (14) have an external diameter corresponding to the connection ring (7).
- Stator according to claim 1, characterised in that the internal face (4') of the lining (2) passes, practically in a stepless manner, into the inner circumferential face (13) of the connection ring (7).
- Stator according to claims 9, 10 and 11, characterised in that the internal diameter of the tubular portions or respectively sleeves (14) is determined by the greatest transverse distance of the circumferential face (13) of the connection ring (7).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19804260A DE19804260C2 (en) | 1998-02-04 | 1998-02-04 | Elastomer stator for an eccentric screw pump |
DE19804260 | 1998-02-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0935071A1 EP0935071A1 (en) | 1999-08-11 |
EP0935071B1 true EP0935071B1 (en) | 2003-05-14 |
Family
ID=7856549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99100630A Expired - Lifetime EP0935071B1 (en) | 1998-02-04 | 1999-01-14 | Elastomeric stator for eccentric screw pumps |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0935071B1 (en) |
AT (1) | ATE240460T1 (en) |
CA (1) | CA2260634C (en) |
DE (2) | DE19804260C2 (en) |
ES (1) | ES2199487T3 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19950258A1 (en) * | 1999-10-18 | 2001-04-26 | Wilhelm Kaechele Gmbh Elastome | Eccentric worm pump or motor has stator with end ring with through opening of essentially similar shape to stator interior, threaded with same pitch and number of turns over ring thickness |
DE19950257B4 (en) * | 1999-10-18 | 2013-01-17 | Wilhelm Kächele GmbH Elastomertechnik | Eccentric screw pump with fully lined stator |
FR2826407B1 (en) * | 2001-06-21 | 2004-04-16 | Pcm Pompes | SPRAY PUMP STATOR AND PROCESS FOR ITS MANUFACTURE |
US7131827B2 (en) * | 2003-11-17 | 2006-11-07 | Artemis Kautschuk-Und Kunststoff-Technik Gmbh | Stator for an eccentric screw pump or an eccentric worm motor operating on the moineau principle |
DE102005028818B3 (en) * | 2005-06-22 | 2006-08-24 | Artemis Kautschuk- Und Kunststoff-Technik Gmbh | Stator for an eccentric screw pump comprises axially arranged stator segments connected pressure-tight on their contact points by a tube pulled onto a casing and overlapping the contact points and a radially flattened metal ring |
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 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1995353U (en) * | 1965-12-31 | 1968-10-24 | Max Streicher | CLASSIFICATION AND PROTECTION DEVICE FOR ECCENTRIC SCREW PUMPS. |
NL6815412A (en) * | 1967-11-02 | 1969-05-06 |
-
1998
- 1998-02-04 DE DE19804260A patent/DE19804260C2/en not_active Expired - Fee Related
-
1999
- 1999-01-14 ES ES99100630T patent/ES2199487T3/en not_active Expired - Lifetime
- 1999-01-14 AT AT99100630T patent/ATE240460T1/en not_active IP Right Cessation
- 1999-01-14 DE DE59905518T patent/DE59905518D1/en not_active Expired - Lifetime
- 1999-01-14 EP EP99100630A patent/EP0935071B1/en not_active Expired - Lifetime
- 1999-02-03 CA CA002260634A patent/CA2260634C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ATE240460T1 (en) | 2003-05-15 |
DE19804260A1 (en) | 1999-08-12 |
ES2199487T3 (en) | 2004-02-16 |
CA2260634A1 (en) | 1999-08-04 |
CA2260634C (en) | 2008-07-15 |
EP0935071A1 (en) | 1999-08-11 |
DE59905518D1 (en) | 2003-06-18 |
DE19804260C2 (en) | 2003-04-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2720130B2 (en) | Chisel direct drive for deep drilling tools | |
DE3314925A1 (en) | CONTROL VALVE FOR AUXILIARY STEERING | |
DE202006003589U1 (en) | rotary engine | |
EP0935071B1 (en) | Elastomeric stator for eccentric screw pumps | |
DE2060538C3 (en) | Internal vibrator | |
DE19950257B4 (en) | Eccentric screw pump with fully lined stator | |
DE19804259A1 (en) | Elastomer stator for eccentric screw pumps | |
EP1222396B1 (en) | Stator with rigid retaining ring | |
EP1510382A1 (en) | Curved roller blind for vehicles | |
DE9406613U1 (en) | Working cylinder | |
DE69934429T2 (en) | IMPROVED ELASTOMER MOUNTING WITH CYLINDRICAL SURFACE HUB | |
DE19518242A1 (en) | Device for generating a pressure | |
DE102015106614A1 (en) | pump device | |
DE1557517A1 (en) | Closing or decorative button | |
DE102010016874A1 (en) | Agricultural device for solidifying the soil | |
DE2628114A1 (en) | SLEEVE BETWEEN A SHAFT AND A SURROUNDING HOUSING | |
DE3412873A1 (en) | PUMP, IN PARTICULAR DRUM PUMP | |
DE2927138A1 (en) | Light construction bicycle hub - has plastics body with metal insert bearing shells and press-on spoke supports | |
DE202006014754U1 (en) | Central release device for hydraulic clutch has annular groove for sealing ring in endface of cylindrical housing | |
DE8716483U1 (en) | Pipe connection | |
EP0994256A1 (en) | Stator for Moineau pump | |
DE20012080U1 (en) | Complete clamping system on a lathe | |
DE102004040720B4 (en) | Cavity Pump | |
EP3016855B1 (en) | Propeller-hub interference fit | |
DE19613374C2 (en) | Recirculation pump |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT DE ES FR GB IT |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 19990811 |
|
AKX | Designation fees paid |
Free format text: AT DE ES FR GB IT |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
17Q | First examination report despatched |
Effective date: 20020517 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): AT DE ES FR GB IT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 59905518 Country of ref document: DE Date of ref document: 20030618 Kind code of ref document: P |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2199487 Country of ref document: ES Kind code of ref document: T3 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20040217 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20070323 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20080125 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20080126 Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080114 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20090115 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090115 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090114 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20120201 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20120307 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20120124 Year of fee payment: 14 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20130114 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20130930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130801 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59905518 Country of ref document: DE Effective date: 20130801 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130131 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130114 |