EP1522729A1 - Exzenterschnecken-Pumpe und Stator für eine solche Pumpe - Google Patents
Exzenterschnecken-Pumpe und Stator für eine solche Pumpe Download PDFInfo
- Publication number
- EP1522729A1 EP1522729A1 EP03022804A EP03022804A EP1522729A1 EP 1522729 A1 EP1522729 A1 EP 1522729A1 EP 03022804 A EP03022804 A EP 03022804A EP 03022804 A EP03022804 A EP 03022804A EP 1522729 A1 EP1522729 A1 EP 1522729A1
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- European Patent Office
- Prior art keywords
- stator
- rotor
- axial
- shell
- elastomeric
- 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.)
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Classifications
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- 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 elongated delivery pump as an eccentric screw pump, consisting of a stator and a rotor.
- the stator can be a cylindrical outer shell, preferably made of metal, and one of this received or Hollow casing made of a "rigid-elastic" material with helical Have inner surface. He takes a corresponding helical or helical Rotor on. Stator and rotor have the same direction slopes. Also of relevance is the Stator itself, with "rigid-elastic" lining or elastomeric jacket.
- Such pumps are for various applications, for example as Feed pump for mortar mixtures or other abrasive conveying fluid known, cf. DE-B 33 04 751 (KTO) with "conical bias" between stator and rotor, stronger becoming the exit MAS.
- a metallic, mostly hardened rotor is operated in one of its slope or Wendel opposite direction driven rotating.
- Around the rotor at promotional Operation against the stator in a constant axial position (or position) Hold must from the input side drive shaft, if necessary above the rotor upstream equipment parts, such as clutch, driver, mixing tool or the like., One corresponding axial holding force can be applied.
- the axial holding force arises as "Reactio” by the conveyance and forward movement of the conveyed and the Rotation of the rotor in the stator conditioned “Actio” after the rotor against the slope its helix and against the slope of the helix of the inner lining of the stator (the inner shell) of the driving device (on the input side) is rotated.
- the jacket is often funnel-shaped widened on the inlet side.
- the invention is based on the object to effectively remedy larger To ensure service life, a change in the consistency of the promoted Medium to prevent and sudden loss of capacity at near mint to avoid exchanged components.
- the described error solved by the invention appeared to be a problem the elastomer to be at the sealing points (the radially inwardly projecting Webs of the elastomeric helix) by an axially extending notch or Gutter early worn and thereby opened a channel for a return flow or a bad seal between the helical rotor and the inner surface reached the elastomeric lining of the outer shell.
- the cause is or was but not in the elastomer blend or its processing or incorporation, rather, it first had to be recognized where the actual cause of this occurred and was visible on a removed stator error symptom.
- To this described staflußrinne in the interior of the stator joined a close the exit end circumferentially in the stator or its elastomeric lining incised gutter.
- a circumferential sealing web (claim 16) and axially projecting and be formed radially far outward on the elastomeric end face, in its axial Extension, however, is substantially less than 2% of the axial length of a stator slope (a screw stage or a stage of the "thread"), on the other He has a completely different task, that of the axial and radial sealing of the Connection point of the stator to the advanced functional parts, without having to the crescent-shaped end of the rotor or a geometry of the rotor functional would be related.
- the sealing bar becomes so strong compressed until the stiffer outer sheath with a metallic pressure side Recording comes into contact (claim 9).
- a combination of helical formation and conical expansion of the Mantels in the output range offers a lightweight manufacturing technology (claim 8).
- the Screw shell is no longer tapered conically towards the pressure end, but slightly or more expanded, retains its basic snail shape but at and additionally receives a conically widening form.
- the runs Conicity in the direction of pressure in this endangered by the crescent-shaped engagement Section as "counter-conicity", in the sense of an expansion and not a rejuvenation of the clear space defined by the helical inner surface of the elastomeric Inner sheath is formed (claim 19).
- a cylindrically designed expansion, retraction or wall thickness reduction (Claim 6, claim 16) can directly into a circumferentially extending sealing ridge on Pass over the forehead.
- the eccentric screw pump has in the example, as can be seen from Figure 1, a outer cylindrical elongated housing 1 of a predetermined diameter and predetermined length.
- the housing may e.g. Made of steel.
- a hollow cylindrical shell e.g. made of highly wear-resistant rubber or the like.
- Elastomer material firmly attached, the inner surface 3 a helical Contour for the formation of a double-flighted double-flighted screw channel having.
- the screw channel is conical expanded, as shown at 4, to the entrance of one to the exit side MAS promoting medium as fluid, e.g. a mix of water and one Additive to facilitate.
- the stator can be axially slotted or multi-piece, which not shown separately.
- a screw 6 In the inner jacket of the stator 2 is a screw 6, e.g. made of hardened steel, used.
- the pitch direction 7 is the same for stator and rotor.
- the longitudinal axis 11 the coiled rotor section is opposite to the central axis 10 of the Worm threads of the stator (the axis of rotation of the rotor) radially offset by 2 * e, resulting in the eccentricity 9 (or "e").
- the rotor 6 On the inlet side MES, the rotor 6 is extended beyond the stator start at 8 to enter the axis 10 to form a screw head 17 (Fig. 3a), over which the rotor in a the slope direction of stator and rotor driven opposite sense can be.
- the outlet opening 5 of the stator of the pump is on the Exit side MAS specially trained. Further details below.
- a conicity k is due to a black, increasing edge area of the helical screw represented in Figure 1, which with a rising Contact pressure from the input side 4 to the output side 5 is operated to the rising discharge pressure and the sealing lines to delineate the Delivery chambers better in the elastomeric stator shell 2 form.
- Delivery chambers are in the upper portion of Figure 1 between the Screw channel (through the inner wall forming 3 of the elastomeric lining 2 formed) and the outer wall of the elongated coil 6 illustrates.
- the sealing lines of the chambers in cross section through the short black Overlap strip represents that do not overlap even in operation, but by yielding the elastomeric material formed by pressure Create sealing effect to the stator, as well as the continuous zone k opposite.
- the axial direction is denoted by z, as the conveying direction, the two Axes 10,11 offset eccentrically and can be seen with the offset 9.
- the consequence of the wear is that the rotor z1 its position relative to the stator has changed by the offset 19, whereby it against the Conveying direction has migrated into the stator.
- the measure .DELTA.z corresponds to the Offset 19 and the wandering of the one provided with a recording Schneckenkopfs 17 in the coupling 18 on the driver 16 of the mixing tool 15, wherein in particular the locations indicated in Figure 3b with v wear of a axial removal of the non-hardened driver tool against the hardened Steel of the rotor subject.
- a change in the clear dimension of the interior by indicating the percentage reduction, corresponding to one percentage reinforcement or thickening of the elastomeric sheath 2 indicated become.
- This indication can also extend to the A measure and the C measure according to Figure 2b as being indicated changing in the course of the z-direction.
- the both dimensions A and C define the largest and smallest dimension of the interior, being the largest and the smallest distance of the inner surface of the elastomeric Lining 2 in section correspond to Figure 2a.
- the widening 5a is conically shaped approximately in accordance with the widening at the entry end 4.
- the plan view of the flared end is shown in FIG. 5b.
- FIG. 4 corresponds with the widening 5c substantially to the shape shown in FIG. 1, with an additional screw portion in the z5 section.
- FIG. 4b shows the corresponding plan view.
- Figure 5b shows a slope at the Expansion or extension 5a, Figure 6b, a cylindrical recess 5b, or a plan view of an end-face, radially directed surface and the figure 4b a Combination of a conical expansion connected with a helical Leak 5c at a conicity other than that to the expansion section of the Length z5 led (in the previously stored area and the previous levels).
- FIG. 6a To illustrate the axial extension and the radial widening, a group of reference symbols is shown in FIG. 6a , such that the residual wall thickness 2 'which arises after introduction of a cylindrical recess 5b or a cylindrical expansion 5b preferably matches a radial thickness of the circumferential web just explained 21.
- the axial extent z5 of the retraction or widening generally to be described as "clearance G" of Figure 1, shall be related to the length L1 of a step (a thread).
- the size of the radial expansion r5 corresponds to a shape along the axial distance z5 on which the expansion r5 takes place. It does not have to be constant, but, as can be seen from FIGS. 5a and 4a , can vary circumferentially and also assume different values in the longitudinal direction z.
- the occurring reduction of the pump-effective length of the stator is compensated by a corresponding increase in the bias voltage k between the rotor and stator.
- the conicity can be seen in the sectional view through inclined connecting lines 21 in FIGS. 5a, 6a . They correspond to the illustrated conicity k, which ensures an increased bias to the pressure side.
- the change in taper takes place in an advantageous manner by continuous change of the A-measure.
- the percentage reduction of this level per level should be at least 0.4%.
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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)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- Figur 1
- zeigt im Längsschnitt eine Pumpe gemäß einem Beispiel der Erfindung, mit Stator 1,2 und Rotor 6.
- Figur 2a, Figur 2b
- zeigen im Figurenteil 2a im Längsschnitt einen nicht konischen Stator für eine Exzenterschnecken-Pumpe, im Figurenteil 2b einen Querschnitt durch diesen Stator.
- Figur 3a
- zeigt einen intakten Kupplungsbereich zwischen einem eintrittsseitigen Ende 8 des Rotors 6 und einem vorgelagerten Mischwerkzeug mit Antrieb, die selbst nicht dargestellt ist.
- Figur 3b
- zeigt den Kupplungsbereich nach betriebs-bedingtem Verschleiß v an Eingriffsstellen.
- Figur 4a, Figur 5a, Figur 6a
- zeigen verschiedene Ausführungsformen des Stators gemäß weiteren Beispielen der Erfindung.
- Figur 4b, Figur 5b, Figur 6b
- zeigen jeweils die entsprechenden Stirnansichten am Austrittsende der Statoren.
Claims (19)
- Exzenterschneckenpumpe mit einem inneren Mantel (2) aus verschleißfestem und elastischem Material in einem ein- oder mehrteiligen zylindrischen Gehäusemantel (1); wobei eine Innenfläche (3) des Mantels (2) oder der Innenmantel (2) auf seiner nach innen weisenden Seite (3) schneckengangförmig mit vorbestimmter Steigungs-Richtung und -Länge ausgebildet ist; mit einem in den Mantel in einer ersten axialen Stellung (z1) und mit radialer Exzentrizität (9) unter Vorspannung eingesetzten und antriebsseitig in dieser Stellung gehaltenen (15,16) wendel- oder schneckenförmigen Rotor (6,8) mit gleicher Steigungsrichtung (7) wie der Stator (2); wobei eine Austrittsöffnung (5) des Stators (2) von seinem Stirnende aus auf einem Stück der axialen Förderlänge nach radial außen so aufgeweitet ist, dass eine - im Pumpbetrieb sich drehende - Stirnkante (24) des nahe der Austrittsöffnung gelegenen Rotorendes (23) - vorzugsweise auch bei einer verschleißbedingten axialen Versetzung (1 9;Δz) des Rotors - gegenüber der Innenfläche (3) des Stators berührungsfrei oder freigestellt (G) umlaufen kann.
- Exzenterschneckenpumpe mit einem Stator aus einem einteiligen zylindrischen Gehäuse (1) und einem darin fest angeordneten Innenmantel (2) aus Elastomermaterial, dessen Innenfläche (3) um die Längsachse (10;z) wendeloder schneckenförmig verlaufend ausgebildet ist, und mit einem wendelförmigen, langgestreckten Rotor (6), der mit seiner Mittelachse (11) gegenüber der Längsachse (10) des Stators um ein vorbestimmtes Maß (9,e) radial versetzt in einer gegebenen axialen Stellung (z) gegenüber dem Stator in diesem angeordnet ist, die gleiche Steigungsrichtung wie der Innenmantel aufweist und - der Steigungsrichtung der Innenfläche (3) des Innenmantels entgegengesetzt - rotierend antreibbar und von einer Antriebsseite (8) aus in der gegebenen axialen Stellung (z) gehalten ist; wobeider Innenmantel (2) von seiner austrittsseitigen Stirn (22) sowohl in radialer als auch in axialer Richtung um ein solches Maß ausgehöhlt oder erweitert ist, dass eine austrittsseitige Stirnkante (24) des Rotors (6) bei einem Pumpenbetrieb - die Innenfläche (3) des Mantels (2) nicht belastend - exzentrisch rotiert;zum Ausgleich eines Leistungsverlustes eine, über die übrige Länge des Stators verteilte Abnahme einer größten lichten Weite (A-Maß) der von der Innenfläche (3) gebildeten Schneckenkanäle im Stator (2) vorgesehen ist (stärkere "Konizität").
- Exzenterschneckenpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein durch radiales und axiales Zurückversetzen einer austrittsseitigen Stirnfläche (22) des Statormantels (2) erzeugter Freigang (G) der austrittsseitigen Umfangskante (24) des Rotors (6) axial entgegen der Förderrichtung auf einem Längenabschnitt (z5) besteht, der mindestens 2 % einer axialen Länge einer Stator-Steigung (Schneckenstufe L1) beträgt, insbesondere oberhalb von 3%, zwischen 5% und 10% oder bis zu einer halben Stufe beträgt.
- Exzenterschneckenpumpe nach Anspruch 3, dadurch gekennzeichnet, dass die Zurückversetzung (Aushöhlung oder Aufweitung) so bemessen ist, dass der Freigang (G) auch bei einem verschleißbedingten axialen Versatz (19,Δz) des Rotors (6) erhalten bleibt.
- Exzenterschneckenpumpe nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass zur Kompensation des durch die Zurückversetzung eines Abschnitts (z5) der ausgangsseitigen Stirnfläche (22) des Stators (2) und der dadurch bedingten Verkürzung seines zumindest einen förderwirksamen Schneckengangs auftretenden Leistungsverlusts(i) eine Reduzierung der lichten Weite des Schneckenkanals (A-Maß-Reduzierung) in Förderrichtung je Steigungsstufe (L1) des Statormantels (2) von mindestens 0,4% vorgesehen ist; oder(ii) eine lichte Weite des Innenmantels pro Stufe (L1) um mehr als im wesentlichen 0,4% herabgesetzt ist, wobei sich die lichte Weite von der Eingangsöffnung (4) zur Ausgangsöffnung (5) im wesentlichen stetig reduziert.
- Exzenterschneckenpumpe nach Anspruch 1 oder Anspruch 2, wobei die Aufweitung einen im wesentlichen zylindrischen Formabschnitt besitzt (5b).
- Exzenterschneckenpumpe nach Anspruch 1 oder Anspruch 2 oder Anspruch 6, wobei die Aufweitung (5) der druckseitigen Öffnung einen im wesentlichen konischen Formabschnitt (5a) besitzt, insbesondere auch mit einer im wesentlichen konischen Erweiterung als Einlaufkonus (4) auf der Eintrittsseite (MES) des Stators bzw. der Pumpe.
- Exzenterschneckenpumpe nach Anspruch 1 oder Anspruch 2 oder Anspruch 7, wobei auf einem Stück (z5) der axialen Länge nahe der Austrittsseite (MAS) die schneckengangförmige Innenfläche (3) sich nach radial außen und nach axial vorn zur Druckseite hin erweitert (5c), insbesondere entgegen einer im wesentlichen stetig verlaufenden Herabsetzung des radialen Maßes der Innenfläche (3) vor dem genannten Axialstück (z5), beginnend nahe der Eingangsseite des Stators bzw. der Pumpe.
- Exzenterschneckenpumpe nach Anspruch 1 oder 2, wobei ein druckseitiges Stirnende des Stators einen ringförmigen Elastomersteg (21) trägt, zur Abdichtung bei einem Einbau des Stators, gegenüber einer druckseitigen Aufnahme.
- Elastomerstator für eine Exzenterschneckenpumpe nach einem der vorigen Ansprüche, mit einem in ein im wesentlichen zylindrisches Gehäuse (1) einbringbaren oder dort angeordneten Mantel (2) aus elastomeren Material, dessen Innenfläche (3) schneckengangförmig ausgebildet ist, zur Aufnahme eines in den Elastomermantel in einer vorbestimmten axialen Stellung und mit vorbestimmter radialer Exzentrizität (9) unter Vorspannung einsetzbaren und antriebsseitig in dieser Stellung stützbaren (16,18) wendelförmigen Rotor (6); wobei eine Austrittsöffnung (5;5a,5b,5c) des Stators (2) von seinem Stirnende aus und der axialen Förderrichtung entgegen aufgeweitet ist bzw. sich umfänglich erweitert, um - im Pumpbetrieb - eine umfänglich sich drehende Stirnkante (24) am Rotorende (23) eines eingesetzten Rotors (6) - vorzugsweise auch bei einer axialen Versetzung (1 9;Δz) des Rotors, gegenüber dem Stator - berührungsfrei oder ohne wesentlichen Druckkontakt zur Innenfläche (3) des Elastomermantels (2) umlaufen zu lassen.
- Elastomerstator nach Anspruch 10, wobei das zylindrische Gehäuse als umfänglich durchgehender Mantel einteilig, oder mit zumindest einem axialen Schlitz versehen oder mit mehreren axialen Schlitzen versehen mehrteilig ist.
- Elastomerstator nach Anspruch 10, wobei die Erweiterung bzw. Aufweitung (5a,5b;5) am druckseitigen Stirnende des Stators im wesentlichen zylindrisch, konisch oder schneckengangförmig ist, oder eine Kombination solcher Abschnitte aufweist.
- Elastomerstator nach Anspruch 10, wobei der Stator auf seiner stirnseitigen Eingangsseite eine insbesondere konisch ausgebildete Aufweitung (4) besitzt.
- Elastomerstator nach Anspruch 10, wobei die axial zurückreichende Länge (z5) der Aufweitung (5) größer als 2%, bevorzugt 5% und kleiner als 50% der axialen Länge (L1) einer Stufe des Schneckengangs des Stators ist (Statorsteigung).
- Elastomerstator für eine Exzenterschneckenpumpe, mit einem im wesentlichen steifen Außenmantel und einem darin angeordneten Innenmantel (2) aus gegenüber dem Außenmantel nachgiebigeren (elastomerem) Material, dessen Innenfläche (3) um eine Längsachse (10) wendel- oder schneckenförmig verlaufend ausgebildet ist, zur Aufnahme eines wendel- oder schneckenförmigen, exzentrischen Rotors (6), der in einer vorbestimmten axialen Stellung (z1) gegenüber dem Statormantel in diesen einbringbar ist, und von einer Antriebsseite aus in seiner axialen Stellung gehalten wird (18,16,17), wobei der elastomere Innenmantel (2) von seiner austrittsseitigen Stirn zurück (z5)(i) in axialer Richtung(ii) gegenüber einer schneckenförmigen Innenfläche (3) axial weiter vorn (zur Eintrittsseite MES) in radialer Richtung (r5)
- Elastomerstator nach Anspruch 15 oder Anspruch 10, wobei ausgangsseitig (MAS) ein umfänglicher Steg (21) aus elastomerem Werkstoff ausgebildet ist, der axial vorspringt, insbesondere zwischen ihm (21) und dem Beginn der ersten, sich axial ein Stück (z5) erstreckenden radialen Aufweitung (r5,5b) eine im wesentlichen zylindrische Reduktion der Wandstärke des Elastomermantels (2) vorliegt.
- Elastomerstator nach Anspruch 16 oder Anspruch 6 (ohne Bezug auf Anspruch 1 oder Anspruch 2), wobei eine Rest-Wandstärke (2') des elastomeren Innenmantels im Bereich der radialen Aufweitung (5b) im Wesentlichen dieselbe radiale Stärke besitzt, wie der ausgangsseitig (MAS) hervorstehende umfängliche Steg (21).
- Elastomerstator nach Anspruch 15, wobei das innere Maß der schneckenförmigen Innenfläche (3) pro Stufe um zumindest 0,4% abnimmt, bis vor die radiale Aufweitung (5,5a,5b,5c).
- Elastomerstator für eine Exzenterschneckenpumpe, mit einem im wesentlichen steifen Außenmantel und einem darin angeordneten Innenmantel (2) aus gegenüber dem Außenmantel nachgiebigeren (elastomerem) Material, dessen Innenfläche (3) um eine Längsachse (10) wendel- oder schneckenförmig verlaufend ausgebildet ist, zur Aufnahme eines wendel- oder schneckenförmigen, exzentrischen Rotors (6), welcher in einer ersten axialen Stellung (z1) im Statormantel von einer Antriebsseite aus gehalten wird (18,16,17), wobei der nachgiebigere Innenmantel (2) nahe seiner austrittsseitigen Stirn eine Gegenkonizität (5,5a,5b,5c) aufweist, die zur Stirn eine Wandstärkereduktion verursacht, gemessen gegenüber einer Wandstärke des Innenmantels (2) vor dem Beginn der Gegenkonizität.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50306120T DE50306120D1 (de) | 2003-10-07 | 2003-10-07 | Exzenterschnecken-Pumpe und Stator für eine solche Pumpe |
ES03022804T ES2279917T5 (es) | 2003-10-07 | 2003-10-07 | Bomba de tornillo sin fin excéntrico y estator para una bomba semejante |
EP03022804A EP1522729B2 (de) | 2003-10-07 | 2003-10-07 | Exzenterschnecken-Pumpe und Stator für eine solche Pumpe |
AT03022804T ATE349617T1 (de) | 2003-10-07 | 2003-10-07 | Exzenterschnecken-pumpe und stator für eine solche pumpe |
CY20071100401T CY1106407T1 (el) | 2003-10-07 | 2007-03-22 | Αντλια με εκκεντρο κοχλια και επαγωγεας για τετοια αντλια |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03022804A EP1522729B2 (de) | 2003-10-07 | 2003-10-07 | Exzenterschnecken-Pumpe und Stator für eine solche Pumpe |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1522729A1 true EP1522729A1 (de) | 2005-04-13 |
EP1522729B1 EP1522729B1 (de) | 2006-12-27 |
EP1522729B2 EP1522729B2 (de) | 2013-03-27 |
Family
ID=34306881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03022804A Expired - Lifetime EP1522729B2 (de) | 2003-10-07 | 2003-10-07 | Exzenterschnecken-Pumpe und Stator für eine solche Pumpe |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1522729B2 (de) |
AT (1) | ATE349617T1 (de) |
CY (1) | CY1106407T1 (de) |
DE (1) | DE50306120D1 (de) |
ES (1) | ES2279917T5 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2113667A1 (de) * | 2006-12-20 | 2009-11-04 | Heishin Sobi Kabushiki Kaisha | Exzenterschneckenpumpe mit einer welle |
WO2018019318A1 (de) | 2016-07-26 | 2018-02-01 | Netzsch Pumpen & Systeme Gmbh | Rotor-stator-system mit einem einlauftrichter für eine exzenterschneckenpumpe |
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 |
CN114341496A (zh) * | 2019-07-16 | 2022-04-12 | 阿诺尔德耶格尔控股有限公司 | 用于偏心螺杆泵的定子 |
DE102022100652A1 (de) | 2022-01-12 | 2023-07-13 | Knauf Pft Gmbh & Co. Kg | Stator für eine Exzenterschneckenpumpe |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1215569A (en) * | 1969-08-29 | 1970-12-09 | Paul Gerhard Langer | Rotary positive-displacement pumps |
DE4442060C1 (de) * | 1994-11-25 | 1996-03-14 | Netzsch Mohnopumpen Gmbh | Exzenterschneckenpumpe, insbesondere zum Fördern von Medien mit hoher Viskosität oder hohem Feststoffgehalt |
DE19758086A1 (de) * | 1997-12-30 | 1999-07-01 | Artemis Kautschuk Kunststoff | Elastomerstator für Exzenterschneckenpumpen |
DE19801021A1 (de) * | 1998-01-14 | 1999-07-22 | Sebastian Jaeger | Elastomerstator für Exzenterschneckenpumpen |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1303705C2 (de) † | 1966-07-06 | 1973-10-11 | Axial foerdernde verdraengerpumpe mit rotierendem pumpelement | |
DE2937403A1 (de) † | 1979-09-15 | 1981-04-02 | Gummi-Jäger KG GmbH & Cie, 3000 Hannover | Nachstellbarer stator fuer exzenterschneckenpumpen |
DE3304751C2 (de) † | 1983-02-11 | 1985-08-01 | Kunststofftechnik Obernkirchen GmbH & Co KG, 3063 Obernkirchen | Exzenterschneckenpumpe |
US6183226B1 (en) † | 1986-04-24 | 2001-02-06 | Steven M. Wood | Progressive cavity motors using composite materials |
DE19531318A1 (de) † | 1995-08-25 | 1997-02-27 | Artemis Kautschuk Kunststoff | Stator für Exzenterschneckenpumpen |
US6170572B1 (en) † | 1999-05-25 | 2001-01-09 | Delaware Capital Formation, Inc. | Progressing cavity pump production tubing having permanent rotor bearings/core centering bearings |
FR2794498B1 (fr) † | 1999-06-07 | 2001-06-29 | Inst Francais Du Petrole | Pompe a cavites progressantes a stator composite et son procede de fabrication |
-
2003
- 2003-10-07 EP EP03022804A patent/EP1522729B2/de not_active Expired - Lifetime
- 2003-10-07 DE DE50306120T patent/DE50306120D1/de not_active Expired - Lifetime
- 2003-10-07 AT AT03022804T patent/ATE349617T1/de active
- 2003-10-07 ES ES03022804T patent/ES2279917T5/es not_active Expired - Lifetime
-
2007
- 2007-03-22 CY CY20071100401T patent/CY1106407T1/el unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1215569A (en) * | 1969-08-29 | 1970-12-09 | Paul Gerhard Langer | Rotary positive-displacement pumps |
DE4442060C1 (de) * | 1994-11-25 | 1996-03-14 | Netzsch Mohnopumpen Gmbh | Exzenterschneckenpumpe, insbesondere zum Fördern von Medien mit hoher Viskosität oder hohem Feststoffgehalt |
DE19758086A1 (de) * | 1997-12-30 | 1999-07-01 | Artemis Kautschuk Kunststoff | Elastomerstator für Exzenterschneckenpumpen |
DE19801021A1 (de) * | 1998-01-14 | 1999-07-22 | Sebastian Jaeger | Elastomerstator für Exzenterschneckenpumpen |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2113667A1 (de) * | 2006-12-20 | 2009-11-04 | Heishin Sobi Kabushiki Kaisha | Exzenterschneckenpumpe mit einer welle |
EP2113667A4 (de) * | 2006-12-20 | 2012-06-13 | Heishin Sobi Kk | Exzenterschneckenpumpe mit einer welle |
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 |
US10962004B2 (en) | 2014-02-18 | 2021-03-30 | Vert Rotors Uk Limited | Synchronized conical screw compressor or pump |
WO2018019318A1 (de) | 2016-07-26 | 2018-02-01 | Netzsch Pumpen & Systeme Gmbh | Rotor-stator-system mit einem einlauftrichter für eine exzenterschneckenpumpe |
DE102016009028A1 (de) | 2016-07-26 | 2018-02-01 | Netzsch Pumpen & Systeme Gmbh | Rotor-Stator-System mit einem Einlauftrichter für eine Exzenterschneckenpumpe |
CN114341496A (zh) * | 2019-07-16 | 2022-04-12 | 阿诺尔德耶格尔控股有限公司 | 用于偏心螺杆泵的定子 |
CN114341496B (zh) * | 2019-07-16 | 2023-10-13 | 阿诺尔德耶格尔控股有限公司 | 用于偏心螺杆泵的定子 |
DE102022100652A1 (de) | 2022-01-12 | 2023-07-13 | Knauf Pft Gmbh & Co. Kg | Stator für eine Exzenterschneckenpumpe |
Also Published As
Publication number | Publication date |
---|---|
ES2279917T3 (es) | 2007-09-01 |
ATE349617T1 (de) | 2007-01-15 |
EP1522729B2 (de) | 2013-03-27 |
EP1522729B1 (de) | 2006-12-27 |
DE50306120D1 (de) | 2007-02-08 |
CY1106407T1 (el) | 2011-10-12 |
ES2279917T5 (es) | 2013-06-24 |
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