WO2010125142A2 - Screw pump - Google Patents

Screw pump Download PDF

Info

Publication number
WO2010125142A2
WO2010125142A2 PCT/EP2010/055804 EP2010055804W WO2010125142A2 WO 2010125142 A2 WO2010125142 A2 WO 2010125142A2 EP 2010055804 W EP2010055804 W EP 2010055804W WO 2010125142 A2 WO2010125142 A2 WO 2010125142A2
Authority
WO
WIPO (PCT)
Prior art keywords
screw pump
profile
spindle
pump according
housing
Prior art date
Application number
PCT/EP2010/055804
Other languages
German (de)
French (fr)
Other versions
WO2010125142A3 (en
Inventor
Roland Maurischat
Original Assignee
Leistritz Aktiengesellschaft
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 Leistritz Aktiengesellschaft filed Critical Leistritz Aktiengesellschaft
Publication of WO2010125142A2 publication Critical patent/WO2010125142A2/en
Publication of WO2010125142A3 publication Critical patent/WO2010125142A3/en

Links

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
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter

Definitions

  • the invention relates to a screw pump, with a housing in which a drive spindle and at least one counter-rotating running spindle are received with interlocking profile packages.
  • Shear and spray pumps are used for the conveying of liquids and multiphase mixtures of different types.
  • the drive spindle and the at least one running spindle have delivery profiles, which together with the housing form displacement chambers through which the fluid is conveyed axially from the suction side to the pressure side.
  • Fig. 1 shows a conventional double-flow screw pump 1, with a housing 24 and a housing insert 2, in which a drive spindle 3 and an opposite running spindle 4 with intermeshing profile sections 5, 6 are added.
  • the screw pump 1 is also suitable for the promotion of non-lubricating, polluted or gas-laden media.
  • the maximum possible differential pressure is limited in such conventional screw pumps by the hydraulic lateral force and the associated deflection of the spindles.
  • the load capacity of the bearings at both ends of the spindles of a pressure increase limits, since larger are required at higher operating pressure, but the space available for the bearing space is limited.
  • the invention is therefore based on the object to provide a screw pump, which can be operated even at an increased differential pressure.
  • the invention is based on the finding that the hydraulic transverse force acting on the spindle is brought about by profile packs of different pitch can be influenced. With reduced lateral force acting on the spindles, the differential pressure can be increased, so that the pump can be operated at a higher operating pressure.
  • both the drive spindle and the at least one drive spindle have a first profile package with a "normal" pitch and a second profile package that has no pitch or whose pitch is zero acting hydraulic shear force halves, so that the differential pressure and thus the operating pressure at which the screw pump according to the invention can be operated, can be almost doubled.
  • the profile package having no pitch is configured as a labyrinth throttle having a plurality of throttle chambers. At this point, therefore, a throttle point is formed with a plurality of throttle chambers.
  • the efficiency can be increased by the housing having a labyrinth-like contour adapted to the profile pack in the region of the profile pack having no pitch. Due to the labyrinthine contour of this section of the housing, the length of the sealing line is significantly extended, resulting in a higher efficiency.
  • the drive spindle and / or the at least one running spindle have three bearing points.
  • the drive spindle and / or the at least one spindle can be mounted in plain bearings.
  • the plain bearings are sealed relative to the pumping chamber by mechanical seals.
  • Fig. 2 shows a screw pump 7, with a housing 8 and a
  • Housing insert 26 in which a drive spindle 9 and a counter-rotating
  • Running spindle with interlocking profile packages 11, 12 are arranged.
  • the two profile packages 1 1, 12 mesh with each other, whereby axially moving pressure chambers are generated to a medium from the suction side 13 to
  • the drive spindle 9 and the spindle 10 are each mounted in plain bearings 16, 17, 25, the sealing of the bearing with respect to the pumping chamber by means of mechanical seals 18, 19.
  • the drive spindle 9 and the spindle 10 have gears 20, 21, whereby the meshing movement the conveyor profiles is realized without contact.
  • the drive spindle 9 in addition to the profile package 11, which has a certain slope, another profile package 22 having a different pitch to it.
  • the running spindle 10 has a further profile pack 23, which has a pitch that is different from the profile pack 12.
  • the profile packs 22, 23 have no slope, or the slope or the Winkel Trents angle is zero. Accordingly, carried by the profile packages 22, 23 no promotion of the medium.
  • the hydraulic transverse force acting on the spindles 9, 10 is considerably reduced, this can be reduced to half be compared to a conventional screw pump, as shown for example in FIG. 1 is shown. The reduced hydraulic transverse force also reduces the spindle deflection, so that the screw pump 7 is suitable for a significantly increased differential pressure.
  • the profile packages 22, 23 form a multiple throttle chambers having labyrinth throttle.
  • the housing 8 has in the region of the no risung having profile packages 22, 23 adapted to the profile packages maze-like contour through which the Dichtl is 24 extended.
  • the extended Dichtl in ie 24 causes an increase in the efficiency of the screw pump. 7
  • the housing 8 of the screw pump 7 is horizontally, orthogonal to the longitudinal axis of the drive spindle 9 and the spindle 10, divided.
  • the double-suction two-spindle screw pump 7 is suitable for pumping lubricating and non-lubricating liquids with or without gaseous and abrasive components. Because of the higher operating pressure, it may e.g. in offshore applications at great depths of water, it is also able to transport the medium over long distances.

Abstract

The invention relates to a screw pump comprising a housing, in which a drive spindle and at least one idler spindle that rotates in the opposite direction are accommodated, said spindles having sets of intermeshing profiled sections, wherein the spindles have two sets of profiled sections (12, 13, 22, 23) having different pitches.

Description

Schraubenspindelpumpe Screw Pump
Die Erfindung betrifft eine Schraubenspindelpumpe, mit einem Gehäuse, in dem eine Antriebsspindel und wenigstens eine gegenläufige Laufspindel mit ineinander eingreifenden Profilpaketen aufgenommen sind.The invention relates to a screw pump, with a housing in which a drive spindle and at least one counter-rotating running spindle are received with interlocking profile packages.
Sch ra u be n sp i nd el p u m pen werd en zu r Förd eru n g von F l u id en u nd Mehrphasengemischen unterschiedlicher Art eingesetzt. Die Antriebsspindel und die wenigstens eine Laufspindel weisen Förderprofile auf, die gemeinsam mit dem Gehäuse Verdrängerräume bilden, durch die das Fluid axial von der Saugseite zur Druckseite befördert wird.Shear and spray pumps are used for the conveying of liquids and multiphase mixtures of different types. The drive spindle and the at least one running spindle have delivery profiles, which together with the housing form displacement chambers through which the fluid is conveyed axially from the suction side to the pressure side.
Fig. 1 zeigt eine herkömmliche doppelflutige Schraubenspindelpumpe 1 , mit einem Gehäuse 24 und einem Gehäuseeinschub 2, in dem eine Antriebsspindel 3 und eine gegenläufige Laufspindel 4 mit ineinander eingreifenden Profilabschnitten 5, 6 aufgenommen sind . Die Schraubenspindelpumpe 1 eignet sich auch zur Förderung von nicht schmierenden, verschmutzten oder gasbeladenen Medien. Der maximal mögliche Differenzdruck wird bei derartigen herkömml ichen Schraubenspindelpumpen allerdings durch die hydraulische Querkraft und die damit verbundene Durchbiegung der Spindeln begrenzt. Ebenso setzt die Belastbarkeit der Lager an beiden Enden der Spindeln einer Druckerhöhung Grenzen, da bei höherem Betriebsdruck größer erforderlich sind, der für die Lager zur Verfügung stehende Bauraum ist jedoch begrenzt.Fig. 1 shows a conventional double-flow screw pump 1, with a housing 24 and a housing insert 2, in which a drive spindle 3 and an opposite running spindle 4 with intermeshing profile sections 5, 6 are added. The screw pump 1 is also suitable for the promotion of non-lubricating, polluted or gas-laden media. However, the maximum possible differential pressure is limited in such conventional screw pumps by the hydraulic lateral force and the associated deflection of the spindles. Likewise, the load capacity of the bearings at both ends of the spindles of a pressure increase limits, since larger are required at higher operating pressure, but the space available for the bearing space is limited.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Schraubenspindelpumpe anzugeben, die auch bei einem erhöhten Differenzdruck betrieben werden kann.The invention is therefore based on the object to provide a screw pump, which can be operated even at an increased differential pressure.
Zur Lösung dieser Aufgabe ist bei einer Schraubenspindelpumpe der eingangs genannten Art erfindungsgemäß vorgesehen, dass die Spindeln zwei Profilpakete mit unterschiedlicher Steigung aufweisen.To solve this problem is inventively provided in a screw pump of the type mentioned that the spindles have two profile packages with different pitch.
Der Erfindung liegt die Erkenntnis zugrunde, dass die auf die Spindel einwirkende hydraulische Querkraft durch Profilpakete mit unterschiedlicher Steigung beeinflusst werden kann. Bei verringerter, auf die Spindeln einwirkender Querkraft kann der Differenzdruck erhöht werden, sodass die Pumpe bei einem höheren Betriebsdruck betrieben werden kann.The invention is based on the finding that the hydraulic transverse force acting on the spindle is brought about by profile packs of different pitch can be influenced. With reduced lateral force acting on the spindles, the differential pressure can be increased, so that the pump can be operated at a higher operating pressure.
Gemäß einer besonders bevorzugten Weiterbildung der Erfindung kann es vorgesehen sein, dass eines der Profilpakete keine Steigung aufweist. Bei dieser Ausführung weist sowohl die Antriebsspindel als auch die wenigstens eine Laufspindel ein erstes Profilpaket mit „normaler" Steigung und ein zweites Profilpaket auf, das keine Steigung aufweist, bzw. dessen Steigung Null ist. Durch das keine Steigung aufweisende Profilpaket wird die auf die Spindeln einwirkende hydraulische Querkraft halbiert, sodass der Differenzdruck und damit der Betriebsdruck, bei dem die erfindungsgemäße Schraubenspindelpumpe betrieben werden kann, nahezu verdoppelt werden kann.According to a particularly preferred embodiment of the invention, it may be provided that one of the profile packages has no slope. In this embodiment, both the drive spindle and the at least one drive spindle have a first profile package with a "normal" pitch and a second profile package that has no pitch or whose pitch is zero acting hydraulic shear force halves, so that the differential pressure and thus the operating pressure at which the screw pump according to the invention can be operated, can be almost doubled.
Im Rahmen der Erfindung kann es auch vorgesehen sein, dass das keine Steigung aufweisende Profilpaket als mehrere Drosselkammern aufweisende Labyrinthdrossel ausgebildet ist. An dieser Stelle ist somit eine Drosselstelle mit mehreren Drosselkammern gebildet.In the context of the invention, it can also be provided that the profile package having no pitch is configured as a labyrinth throttle having a plurality of throttle chambers. At this point, therefore, a throttle point is formed with a plurality of throttle chambers.
Bei der erfindungsgemäßen Schraubenspindelpumpe kann der Wirkungsgrad erhöht werden, indem das Gehäuse im Bereich des keine Steigung aufweisenden Profilpakets eine an das Profilpaket angepasste labyrinthartige Kontur aufweist. Durch die labyrinthartige Kontur dieses Abschnitts des Gehäuses wird die Länge der Dichtlinie signifikant verlängert, wodurch sich ein höherer Wirkungsgrad ergibt.In the case of the screw pump according to the invention, the efficiency can be increased by the housing having a labyrinth-like contour adapted to the profile pack in the region of the profile pack having no pitch. Due to the labyrinthine contour of this section of the housing, the length of the sealing line is significantly extended, resulting in a higher efficiency.
Bei der erfindungsgemäßen Schraubenspindelpumpe wird es bevorzugt, dass die Antriebsspindel und/oder die wenigstens eine Laufspindel drei Lagerstellen aufweisen.In the case of the screw pump according to the invention, it is preferred that the drive spindle and / or the at least one running spindle have three bearing points.
Gemäß einer vorteilhaften Weiterbildung der Erfindung können die Antriebsspindel und/oder die wenigstens eine Laufspindel in Gleitlagern gelagert sein. In diesem Zusammenhang kann es auch vorgesehen sein, dass die Gleitlager gegenüber dem Förderraum durch Gleitringdichtungen abgedichtet sind. Eine Vereinfachung der Herstellung und eine bessere Zugänglichkeit bei gegebenenfalls notwendigen Wartungs- oder Reparaturarbeiten ergibt sich, wenn d a s G eh ä u se bzw. d er Geh ä u see i n sch u b d e r erfi n d u n g sg em ä ßen Schraubenspindelpumpe horizontal, orthogonal zur Längsachse der Antriebsspindel und der wenigstens einen Laufspindel, geteilt ist.According to an advantageous embodiment of the invention, the drive spindle and / or the at least one spindle can be mounted in plain bearings. In this context, it may also be provided that the plain bearings are sealed relative to the pumping chamber by mechanical seals. A simplification of the production and a better accessibility in case of possibly necessary maintenance or repair work results when the housing or the housing, in the course of the invention of the external screw pump, is horizontal, orthogonal to the longitudinal axis of the drive spindle and the at least one spindle is divided.
Weitere Vorteile und Einzelheiten der Erfindung werden nachfolgend anhand eines Ausführungsbeispiels erläutert.Further advantages and details of the invention will be explained below with reference to an embodiment.
Fig. 2 zeigt eine Schraubenspindelpumpe 7, mit einem Gehäuse 8 und einemFig. 2 shows a screw pump 7, with a housing 8 and a
Gehäuseeinschub 26, in dem eine Antriebsspindel 9 und eine gegenläufigeHousing insert 26, in which a drive spindle 9 and a counter-rotating
Laufspindel mit ineinander eingreifenden Profilpaketen 11 , 12 angeordnet sind.Running spindle with interlocking profile packages 11, 12 are arranged.
Die beiden Profilpakete 1 1 , 12 kämmen miteinander, wodurch axial bewegte Druckkammern erzeugt werden, um ein Medium von der Saugseite 13 zurThe two profile packages 1 1, 12 mesh with each other, whereby axially moving pressure chambers are generated to a medium from the suction side 13 to
Druckseite 14 zu fördern. Der auf der Druckseite dargestellte Pfeil 15 gibt dieTo promote pressure side 14. The arrow 15 shown on the print page is the
Förderrichtung des Mediums an.Conveying direction of the medium.
Die Antriebsspindel 9 und die Laufspindel 10 sind jeweils in Gleitlagern 16, 17, 25 gelagert, die Abdichtung der Lagerung gegenüber dem Förderraum erfolgt mittels Gleitringdichtungen 18, 19. Die Antriebsspindel 9 und die Laufspindel 10 weisen Getrieberäder 20, 21 auf, wodurch die kämmende Bewegung der Förderprofile kontaktfrei realisiert wird.The drive spindle 9 and the spindle 10 are each mounted in plain bearings 16, 17, 25, the sealing of the bearing with respect to the pumping chamber by means of mechanical seals 18, 19. The drive spindle 9 and the spindle 10 have gears 20, 21, whereby the meshing movement the conveyor profiles is realized without contact.
Wie in Fig. 2 gezeigt ist, weist die Antriebsspindel 9 neben dem Profilpaket 11 , das eine bestimmte Steigung aufweist, ein weiteres Profilpaket 22 auf, das eine dazu unterschiedliche Steigung aufweist. Analog weist die Laufspindel 10 ein weiteres Profilpaket 23 auf, das eine zum Profilpaket 12 unterschiedliche Steigung aufweist. In dem dargestellten Ausführungsbeispiel besitzen die Profilpakete 22, 23 keine Steigung, bzw. die Steigung oder der Steigungswin kel ist Null . Dementsprechend erfolgt durch die Profilpakete 22, 23 keine Förderung des Mediums. Bei diesem Aufbau wird die auf die Spindeln 9, 10 einwirkende hydraulische Querkraft beträchtlich reduziert, diese kann auf die Hälfte reduziert werden, im Vergleich zu einer herkömmlichen Schraubenspindelpumpe, wie sie beispielsweise in Fig . 1 dargestellt ist. Durch die verringerte hydraulische Querkraft verringert sich ebenfalls die Spindeldurchbiegung, sodass die Schraubenspindelpumpe 7 für einen signifikant erhöhten Differenzdruck geeignet ist.As shown in Fig. 2, the drive spindle 9 in addition to the profile package 11, which has a certain slope, another profile package 22 having a different pitch to it. Analogously, the running spindle 10 has a further profile pack 23, which has a pitch that is different from the profile pack 12. In the illustrated embodiment, the profile packs 22, 23 have no slope, or the slope or the Winkeligungs angle is zero. Accordingly, carried by the profile packages 22, 23 no promotion of the medium. In this construction, the hydraulic transverse force acting on the spindles 9, 10 is considerably reduced, this can be reduced to half be compared to a conventional screw pump, as shown for example in FIG. 1 is shown. The reduced hydraulic transverse force also reduces the spindle deflection, so that the screw pump 7 is suitable for a significantly increased differential pressure.
Die Profilpakete 22, 23 bilden eine mehrere Drosselkammern aufweisende Labyrinthdrossel . Das Gehäuse 8 weist im Bereich der keine Steig ung aufweisenden Profilpakete 22, 23 eine an die Profilpakete angepasste labyrinthartige Kontur auf, durch die die Dichtl inie 24 verlängert wird . Die verlängerte Dichtl in ie 24 bewirkt eine Erhöhung des Wirkungsgrads der Schraubenspindelpumpe 7.The profile packages 22, 23 form a multiple throttle chambers having labyrinth throttle. The housing 8 has in the region of the no risung having profile packages 22, 23 adapted to the profile packages maze-like contour through which the Dichtl is 24 extended. The extended Dichtl in ie 24 causes an increase in the efficiency of the screw pump. 7
Beim Betrieb der Schraubenspindelpumpe 7 wird diese vorzugsweise vertikal aufgestellt, wodurch sich Vorteile bei der Förderung gasbeladener Medien ergeben, da eine Separation der Phasen des geförderten Mediums vermieden wird. Das Gehäuse 8 der Schraubenspindelpumpe 7 ist horizontal, orthogonal zur Längsachse der Antriebsspindel 9 und der Laufspindel 10, geteilt.When operating the screw pump 7, this is preferably placed vertically, resulting in advantages in the promotion of gas-laden media, since a separation of the phases of the pumped medium is avoided. The housing 8 of the screw pump 7 is horizontally, orthogonal to the longitudinal axis of the drive spindle 9 and the spindle 10, divided.
Die doppelflutige zweispindlige Schraubenspindelpumpe 7 eignet sich zur Förderung von schmierenden und nicht schmierenden Flüssigkeiten mit oder ohne gasförmige und abrasive Bestandteile. Wegen des höheren Betriebsdrucks kann sie z.B. bei Offshore-Anwendungen in großen Wassertiefen betrieben werden, daneben ist sie in der Lage, das Medium über größere Entfernungen zu fördern. The double-suction two-spindle screw pump 7 is suitable for pumping lubricating and non-lubricating liquids with or without gaseous and abrasive components. Because of the higher operating pressure, it may e.g. in offshore applications at great depths of water, it is also able to transport the medium over long distances.

Claims

Patentansprüche claims
1. Schraubenspindelpumpe, mit einem Gehäuse, in dem eine Antriebsspindel und wenigstens eine gegenläufige Laufspindel mit ineinander eingreifenden Profilpaketen aufgenommen sind, dadurch gekennzeichnet, dass die1. Screw pump, with a housing in which a drive spindle and at least one counter-rotating spindle are received with interlocking profile packages, characterized in that the
Spindeln zwei Profilpakete (12, 13, 22, 23) mit unterschiedlicher Steigung aufweisen.Spindles have two profile packages (12, 13, 22, 23) with different pitch.
2. Schraubenspindelpumpe nach Anspruch 1 , dadurch gekennzeichnet, dass eines der Profilpakete (22, 23) keine Steigung aufweist.2. Screw pump according to claim 1, characterized in that one of the profile packs (22, 23) has no slope.
3. Schraubenspindelpumpe nach Anspruch 2, dadurch gekennzeichnet, dass das keine Steigung aufweisende Profilpaket (22, 23) als mehrere Drossel kammern aufweisende Labyrinthdrossel ausgebildet ist.3. screw pump according to claim 2, characterized in that the no slope having profile package (22, 23) as a plurality of throttle chambers having labyrinth throttle is formed.
4. Schraubenspindelpumpe nach Anspruch 3, dadurch gekennzeichnet, dass das Gehäuse (8) im Bereich des keine Steigung aufweisenden Profilpakets (22, 23) eine an das Profilpaket (22, 23) angepasste labyrinthartige Kontur aufweist.4. Screw pump according to claim 3, characterized in that the housing (8) in the region of the profile having no pitch profile (22, 23) to the profile package (22, 23) adapted maze-like contour.
5. Schraubenspindelpumpe nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebsspindel (9) und/oder d ie wenigstens eine Laufspindel (10) bis zu drei Lagerstellen aufweisen.5. Screw pump according to one of the preceding claims, characterized in that the drive spindle (9) and / or the T at least one running spindle (10) have up to three bearing points.
6. Schraubenspindelpumpe nach Anspruch 5, dadurch gekennzeichnet, dass die Antriebsspindel (9) und/oder die wenigstens eine Laufspindel (10) in Gleitlagern (16, 17, 25) gelagert sind.6. screw pump according to claim 5, characterized in that the drive spindle (9) and / or the at least one running spindle (10) in plain bearings (16, 17, 25) are mounted.
7. Schraubenspindelpumpe nach Anspruch 6, dadurch gekennzeichnet, dass d ie G l e itl ag er ( 1 6 , 1 7, 25) g egen ü ber dem Förderra u m d u rch7. Screw pump according to claim 6, characterized in that the contact means (16, 17, 25) are located above the conveyor track
Gleitringdichtungen (18, 19) abgedichtet sind.Mechanical seals (18, 19) are sealed.
8. Schraubenspindelpumpe nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Gehäuse (8) und/oder der Gehäuseeinschub (26) horizontal, orthogonal zur Längsachse der Antriebsspindel (9) und der wenigstens einen Laufspindel (10), geteilt ist bzw. sind. 8. Screw pump according to one of the preceding claims, characterized in that the housing (8) and / or the housing insert (26) horizontally, orthogonal to the longitudinal axis of the drive spindle (9) and the at least one running spindle (10) is divided or are.
PCT/EP2010/055804 2009-04-30 2010-04-29 Screw pump WO2010125142A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910019220 DE102009019220B4 (en) 2009-04-30 2009-04-30 Screw Pump
DE102009019220.4 2009-04-30

Publications (2)

Publication Number Publication Date
WO2010125142A2 true WO2010125142A2 (en) 2010-11-04
WO2010125142A3 WO2010125142A3 (en) 2011-07-14

Family

ID=42932291

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/055804 WO2010125142A2 (en) 2009-04-30 2010-04-29 Screw pump

Country Status (2)

Country Link
DE (1) DE102009019220B4 (en)
WO (1) WO2010125142A2 (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2652192A (en) * 1947-06-13 1953-09-15 Curtiss Wright Corp Compound-lead screw compressor or fluid motor
DE801560C (en) * 1949-02-22 1951-01-11 Franz Dipl-Ing Burghauser Fine kneading pump
SE302815B (en) * 1965-01-13 1968-08-05 Svenska Rotor Maskiner Ab
GB1379575A (en) * 1971-06-08 1975-01-02 Stothert & Pitt Ltd Meshing screw pump
DD95186A1 (en) * 1971-06-30 1973-01-12
GB2165890B (en) * 1984-10-24 1988-08-17 Stothert & Pitt Plc Improvements in pumps
ATE270393T1 (en) * 2001-04-03 2004-07-15 Cfs Slagelse As SCREW CONVEYOR DEVICE FOR LIQUIDS AND/OR MATERIAL CHOCKS
DE20302990U1 (en) * 2003-02-24 2004-07-08 Werner Rietschle Gmbh + Co. Kg Rotary pump
DE102005037118B3 (en) * 2005-08-03 2007-01-18 Leistritz Ag Double-flow screw pump with manifold bearings for supplying single/multi-phase mixtures has a drive spindle and a main arbor each with a central arrangement of bearings and screw-shaped workings
KR101184716B1 (en) * 2005-08-22 2012-09-20 가시야마고교가부시끼가이샤 Screw rotor and vacuum pump
US20080286129A1 (en) * 2005-12-08 2008-11-20 Ghh Rand Schraubenkompressoren Gmbh Helical Screw Compressor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
WO2010125142A3 (en) 2011-07-14
DE102009019220A1 (en) 2010-11-11
DE102009019220B4 (en) 2013-04-11

Similar Documents

Publication Publication Date Title
EP1957798B1 (en) Helical screw compressor
WO2007014540A1 (en) Double flow screw-spindle pump which is supported at multiple points
EP2386767A2 (en) Helico-axial pump, rotor for same, method for hydrodynamic bearing of a rotor of a helicon-axial pump and a hybrid pump with a rotor for a helico-axial pump
EP3029333B1 (en) Axially split pump
DE19513380C2 (en) Sealing, storage and drive of the rotors of a dry-running screw rotor compressor
DE2825616C2 (en) Bearing and sealing arrangement on the shafts of a gear pump
DE102006021704A1 (en) Screw compressor for large power outputs
DE602004002828T2 (en) Gear pump or motor
EP2154374B1 (en) Hydraulic gear wheel machine
EP0666422B1 (en) Bearings and drive connection for the rotors of a screw compressor
DE102013101164B4 (en) Screw Pump
WO2010125142A2 (en) Screw pump
EP0942172B1 (en) Vacuum pump with multiple driven shafts
EP2295802A2 (en) Hydraulic gear machine
DE102006028291B4 (en) Arrangement of an oil pump in the screw compressor
DE10334481A1 (en) Drive for dry-compressing spindle vacuum pump for gases has integrated belt drive for increase of rotor RPM and synchronization of spindle rotor pair
DE102013109829B4 (en) Eccentric screw pump for conveying liquid and / or granular media comprising a stator with elastic lining
EP2719900B1 (en) Pump
DE19822283A1 (en) Rotary tooth compressor and method for operating one
DE112005002761B4 (en) combination pump
EP0520943A1 (en) Positive displacement pump
DE10201716A1 (en) Gear pump for use with elastomers has lubrication channels which convey material in opposite directions along stub axles of the gear wheels
DE3521253A1 (en) Spiral compressor
DE102020103384A1 (en) Screw compressor with rotors mounted on one side
DE102021208481A1 (en) Feed pump and motor vehicle with such a feed pump

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10718566

Country of ref document: EP

Kind code of ref document: A2