DD202924A5 - STATOR FOR SPINDLE SCREW PUMPS - Google Patents
STATOR FOR SPINDLE SCREW PUMPS Download PDFInfo
- Publication number
- DD202924A5 DD202924A5 DD81231757A DD23175781A DD202924A5 DD 202924 A5 DD202924 A5 DD 202924A5 DD 81231757 A DD81231757 A DD 81231757A DD 23175781 A DD23175781 A DD 23175781A DD 202924 A5 DD202924 A5 DD 202924A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- stator
- pressure
- pump
- screw pumps
- sleeve
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- 229920001971 elastomer Polymers 0.000 claims abstract description 3
- 239000000806 elastomer Substances 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 229920001967 Metal rubber Polymers 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
Landscapes
- 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
Die Erfindung bezieht sich auf einen verbesserten Stator fuer einspindelige Schraubenpumpen. Im Sinne der Erfindung besitzt der Stator Huelsenabschnitte, deren Aussenteil aus einem kombinierten Material aus Metall und Elastomer hergestellt ist und der ueber eine gewisse Starrheit verfuegt, so dass nach Einfuehren des aus Huelsenabschnitten in entsprechender Laenge zusammengestellten Stators in einer Metallhuelse ein beliebiger Gegendruck aufgebracht werden kann. Nach einem weiteren Merkmal der Erfindung ist der Hohlraum, der entsprechend der Gewindesteigung des Huelsenabschnittes verlaeuft, an eine Differentialpumpe angeschlossen, die v. dem im Druckraum der Pumpe herrschenden Druck gesteuert wird. Durch diesen automatisch aufgebrachten Druck wird das im Huelsenabschnitt vorhandene Gewindeprofil deformiert und ein Verschleiss an der Innenkontur korrigiert bzw. ausgeglichen.The invention relates to an improved stator for one-spindle screw pumps. For the purposes of the invention, the stator has Huelsenabschnitte whose outer part is made of a combined material of metal and elastomer and over a certain rigidity, so that after introduction of the compiled from Huelsenabschnitten in a corresponding length stator in a Metallhuelse any back pressure can be applied , According to a further feature of the invention, the cavity, which proceeds in accordance with the thread pitch of the Huelsenabschnittes, connected to a differential pump, the v. the pressure prevailing in the pressure chamber of the pump pressure is controlled. By means of this automatically applied pressure, the thread profile present in the Huelsenabschnitt is deformed and a wear on the inner contour corrected or compensated.
Description
14 615 5614 615 56
231757231757
Stator für einspindelige SchraubenpumpenStator for single-spindle screw pumps
Die Erfindung bezieht sich auf einen verbesserten Stator für einspindelige Schraubenpumpen.The invention relates to an improved stator for a spindle screw pumps.
Es sind bereits Schraubenpumpen bekannt, deren Statoren aus hohlen Hülsenabschnitten (Gehäuseabsclinitten), die über ein entsprechendes Gewindeprofil verfügen, zusammengesetzt sind. Die Hülsenabschnitte sind mit einer inneren elastischen Auskleidung versehen, v/obei sich diese Auskleidungen auch auf die Seitenflächen (Stirnseiten) der HülsenabsQhnitte erstrecken und diese zumindest zum Teil überdecken. Die auf die SeitenflächenScrew pumps are already known, the stators of hollow sleeve sections (Gehäusabsclinitten), which have a corresponding thread profile, are composed. The sleeve sections are provided with an inner elastic lining, in which these linings also extend to the side surfaces (front sides) of the sleeve section and cover these at least in part. The on the side surfaces
-2 --2 -
231757 7231757 7
hinausreichenden Auskleidungsteile verfugen über Dichtungsprofile, die aus ihrem eigenen Material ausgebildet sind. Diese Hülsenabschnitte werden in ihrer gegenseitigen Lage der Gewindesteigung des inneren hohlen Gewindeprofils entsprechend durch Führungsstifte fixiert. Diese technische Lösung ist mit dein Vorteil verbunden, daß aus den einzelnen Hülsenabschnitten Statoren beliebiger Länge zusammengesetzt werden können. Die Hülsenabschnitte werden als Bauelemente in Serienfertigung preiswert hergestellt und besitzen eine geringe Masse. In Abhängigkeit von den technischen Parametern der jeweiligen Pumpe werden d©nn die Hülsenabschnitte zu Statoren zusammengesetzt, um die erforderliche Anzahl von Kammern zu erhalten. Die vorstehend beschriebene Lösung bietet jedoch keine genügende Gewähr zur Verminderung der Spaltverluste, wobei auch die im Verlaufe des betriebsmäßigen Einsatzes entstehenden Verschleißerscheinungen nicht in entsprechender V/eise ausgeglichen werden können.Exceeding lining parts have sealing profiles formed from their own material. These sleeve sections are fixed in their mutual position of the thread pitch of the inner hollow thread profile accordingly by guide pins. This technical solution is associated with the advantage that stators of any length can be assembled from the individual sleeve sections. The sleeve sections are manufactured inexpensively as components in mass production and have a low mass. Depending on the technical parameters of the respective pump, the sleeve sections are assembled into stators to obtain the required number of chambers. However, the solution described above does not provide a sufficient guarantee for reducing the gap losses, whereby the wear occurring in the course of operational use can not be compensated in appropriate manner.
Ziel der Erfindung ist es, die vorstehend aufgezeigten Nachteile einzuschränken.The aim of the invention is to limit the above-mentioned disadvantages.
Der Erfindung liegt die Aufgabe zugrunde, die Hülsenabschnitte dahingehend zu verbessern, daß weitere Möglichkeiten zur Verminderung des Spaltverlustes und zum Ausgleich der während des betriebsmäßigen Einsatzes eintretenden Verschleißerscheinungen gegeben sind.The invention has for its object to improve the sleeve sections to the effect that further possibilities for reducing the gap loss and to compensate for the occurring during the operational use wear phenomena are given.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß der Außenteil der Hülsenabschnitte aus einem kombinierten Material aus Metall und Elastomer hergestellt ist, und eine gewisse Starrheit aufweist, so daß der aus denAccording to the invention the object is achieved in that the outer part of the sleeve sections is made of a combined material of metal and elastomer, and has a certain rigidity, so that from the
2 317 5 7 72 317 5 7 7
Abschnitten zusammengesteilte entsprechend lange Stator in eine Metallhülse eingepaßt werden kann und ein beliebiger Gegendruck aufbringbar ist.Sections zusammensteilte correspondingly long stator can be fitted in a metal sleeve and any back pressure can be applied.
Sine vorteilhafte Ausführungsform des erfindungsgemäßen Stators ist dadurch gekennzeichnet, daß in dem der Gewindesteigung folgenden Hohlraum des Hülsenabschnittes eine durch den im Druckraum der Pumpe herrschenden Druck gesteuerte Differentialpumpe angeordnet ist, durch deren Einsatz der zur Korrektion erforderliche Überdruck automatisch erzeugt wird.Sine advantageous embodiment of the stator according to the invention is characterized in that in the thread pitch following cavity of the sleeve portion is controlled by the pressure prevailing in the pressure chamber of the pump pressure differential pump, by the use of the correction required for overpressure is automatically generated.
Ausführun^Bbeis^iel;, Execute and exercise;
Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden; in den dazugehörigen Zeich-! nungen zeigen:The invention will be explained in more detail below using an exemplary embodiment; in the accompanying drawing! show:
Pig, 1: die Vorderansicht' des Hülsenabschnitte© eines Stators, ;Pig, 1: the front view 'of the sleeve sections © of a stator,;
Fig. 2: den Schnitt von Pig· I.Fig. 2: the section of Pig · I.
Die Außenfläche des Hülsenabschnittes 1 iat bei der vorliegenden Ausführung ein Kreis; kann jedoch auch eine andere vom Kreis abweichende Form sein. Der Innenhohlraum des Hülsenabschnittes 1 enthält das Gewindeprofil 2, das mit der aus elastischem Material hergestellten Auskleidung 3 versehen ist. Die elastische Auskleidung 3 umhüllt mit einer für die Größe der Pumpe charakteristischen gleichmäßigen Wandstärke das Innenprofil· Die genannte Auskleidung ist so ausgeführt, daß an den Rändern des Gewindeprofils 2 Paßglieder 6 ausgebildet sind, die Dichtungszwecken dienen.The outer surface of the sleeve portion 1 iat a circle in the present embodiment; However, it can also be another form deviating from the circle. The inner cavity of the sleeve portion 1 contains the thread profile 2, which is provided with the lining 3 made of elastic material. The elastic lining 3 envelops the inner profile with a uniform wall thickness which is characteristic for the size of the pump. The said lining is designed in such a way that at the edges of the thread profile 2 fitting members 6 are provided which serve for sealing purposes.
Der aus den Hülsenabschnitten zusammengestellte entsprechend lange Stator wird in ein Metallrohr eingepaßt.The assembled from the sleeve sections correspondingly long stator is fitted in a metal tube.
-4--4-
231757 7231757 7
In den Hohlraum^ der der Gewindesteigung des HülaenabachnitteB folgt, wird ein beliebiger Druck aufgebracht, der das vorhandene Gewindeprofil im Hülsenabschnitt deformiert und dadurch den aufgetretenen Verschleiß oder Formfehler an der Innenkontur korrigiert bzw. ausgleicht.In the cavity, which follows the thread pitch of the HülaenabachnitteB, any pressure is applied, which deforms the existing thread profile in the sleeve portion and thereby corrects the occurring wear or shape error on the inner contour or compensates.
ErfindunßsangnruchErfindunßsangnruch
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU801785A HU181561B (en) | 1980-07-17 | 1980-07-17 | Stator for single-spindle screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD202924A5 true DD202924A5 (en) | 1983-10-05 |
Family
ID=10956188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD81231757A DD202924A5 (en) | 1980-07-17 | 1981-07-14 | STATOR FOR SPINDLE SCREW PUMPS |
Country Status (7)
| Country | Link |
|---|---|
| CS (1) | CS238373B2 (en) |
| DD (1) | DD202924A5 (en) |
| DE (1) | DE3126988A1 (en) |
| FR (1) | FR2487017B1 (en) |
| GB (1) | GB2081812B (en) |
| HU (1) | HU181561B (en) |
| IT (1) | IT1167465B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3710930A1 (en) * | 1987-04-01 | 1988-10-20 | Gd Anker Gmbh & Co Kg | Eccentric spiral pump |
| DE3820483A1 (en) * | 1988-06-16 | 1989-12-21 | Stihl Maschf Andreas | PUMP FOR VISCOSE LIQUIDS, ESPECIALLY LUBRICATING OIL PUMP |
| AT401089B (en) * | 1988-09-30 | 1996-06-25 | Gd Anker Gruber Duebel Anker G | Eccentric screw pump |
| GB2244517B (en) * | 1990-05-31 | 1994-05-04 | Mono Pumps Ltd | Helical gear pump and stator |
| US5171138A (en) * | 1990-12-20 | 1992-12-15 | Drilex Systems, Inc. | Composite stator construction for downhole drilling motors |
| GB2423796C (en) | 2003-10-27 | 2007-06-06 | Dyna Drill Technologies Inc | Asymmetric contouring of elastomer liner on lobes in a moineau style power section stator |
| US7407372B2 (en) * | 2004-05-14 | 2008-08-05 | Robbins & Myers Energy Systems L.P. | Progressing cavity pump or motor |
| DE102004038477B3 (en) | 2004-08-07 | 2005-10-06 | Netzsch-Mohnopumpen Gmbh | Cavity Pump |
| US7517202B2 (en) | 2005-01-12 | 2009-04-14 | Smith International, Inc. | Multiple elastomer layer progressing cavity stators |
| US9393648B2 (en) | 2010-03-30 | 2016-07-19 | Smith International Inc. | Undercut stator for a positive displacment motor |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2621605A (en) * | 1945-10-12 | 1952-12-16 | Clayton Mark & Company | Pump |
| GB800154A (en) * | 1955-09-30 | 1958-08-20 | Ahmad Aziz | Improvements in or relating to rotary pumps or motors |
| DE1553199C3 (en) * | 1966-03-15 | 1974-03-07 | Karl Dipl.-Ing. 7024 Bernhausen Schlecht | Adjustable stator for an eccentric screw pump |
| DE1653910A1 (en) * | 1967-06-09 | 1971-10-14 | Seidl Wilhelm Dipl Ing | Device for axially lining up several stators in eccentric screw pumps |
| DE2161116C3 (en) * | 1971-12-09 | 1979-09-06 | Moeller, Heinrich, 4962 Obernkirchen | Housing insert for eccentric screw pumps |
| DE7146795U (en) * | 1971-12-13 | 1972-03-23 | Vibrastop Gummimetallverbindungen Kaechele W | ADJUSTABLE STATOR |
| US3912426A (en) * | 1974-01-15 | 1975-10-14 | Smith International | Segmented stator for progressive cavity transducer |
| DE2408186A1 (en) * | 1974-02-20 | 1975-08-21 | Lonza Werke Gmbh | Eccentric pump with screw rotor and stator - has cavities between stator and housing |
| DE2512792A1 (en) * | 1975-03-22 | 1976-09-30 | Gummi Jaeger Kg Gmbh & Cie | Cover of eccentric worm pump stator - is of rubber or elastomer and of greater Shore hardness than stator |
| FR2349729A1 (en) * | 1976-04-27 | 1977-11-25 | Tiraspolsky Wladimir | Hydraulic machine with helical rotor - has internal and external helices assembled from separately machined longitudinal sections |
| DE2619751A1 (en) * | 1976-05-05 | 1977-11-17 | Mathis Fertigputz | Eccentric worm pump stator housing maintained under tension - has adjustable circumference and is covered with pressure transmitting vulcanised material |
| DE2817280A1 (en) * | 1978-04-20 | 1979-10-25 | Streicher Foerdertech | STATOR FOR ECCENTRIC SCREW PUMPS |
-
1980
- 1980-07-17 HU HU801785A patent/HU181561B/en unknown
-
1981
- 1981-07-08 DE DE19813126988 patent/DE3126988A1/en active Granted
- 1981-07-09 IT IT22827/81A patent/IT1167465B/en active
- 1981-07-13 CS CS815350A patent/CS238373B2/en unknown
- 1981-07-14 DD DD81231757A patent/DD202924A5/en not_active IP Right Cessation
- 1981-07-15 GB GB8121797A patent/GB2081812B/en not_active Expired
- 1981-07-17 FR FR8114017A patent/FR2487017B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CS238373B2 (en) | 1985-11-13 |
| DE3126988C2 (en) | 1987-06-25 |
| IT8122827A0 (en) | 1981-07-09 |
| DE3126988A1 (en) | 1982-02-25 |
| FR2487017A1 (en) | 1982-01-22 |
| GB2081812B (en) | 1984-08-08 |
| HU181561B (en) | 1983-10-28 |
| IT1167465B (en) | 1987-05-13 |
| FR2487017B1 (en) | 1987-12-24 |
| GB2081812A (en) | 1982-02-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENJ | Ceased due to non-payment of renewal fee |