DE102009010107B4 - Cavity Pump - Google Patents
Cavity Pump Download PDFInfo
- Publication number
- DE102009010107B4 DE102009010107B4 DE200910010107 DE102009010107A DE102009010107B4 DE 102009010107 B4 DE102009010107 B4 DE 102009010107B4 DE 200910010107 DE200910010107 DE 200910010107 DE 102009010107 A DE102009010107 A DE 102009010107A DE 102009010107 B4 DE102009010107 B4 DE 102009010107B4
- Authority
- DE
- Germany
- Prior art keywords
- rotor
- eccentric screw
- helical
- stator
- screw pump
- 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.)
- Active
Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 239000013013 elastic material Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims 1
- 239000000806 elastomer Substances 0.000 description 7
- 239000002131 composite material Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920001967 Metal rubber Polymers 0.000 description 1
- 206010041953 Staring Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
-
- 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
- F04C2240/00—Components
- F04C2240/20—Rotors
Abstract
Exzenterschneckenpumpe mit einem Rotor (2) mit schneckenförmiger oder schraubenförmiger Außenkontur, der über eine Welle (1) von einem Motor (6) angetrieben ist und eine taumelnde Rotationsbewegung im Pumpenstator (3) in einem Hohlraum ausübt, dessen innere Oberfläche eine schneckenförmige oder schraubenförmige Innenkontur aufweist, dadurch gekennzeichnet, – dass die Oberfläche des Statorhohlraumes von einem starren Material insbesondere von Stahl gebildet ist, – dass zumindest die äußere Oberfläche des Rotors (2) von einem elastischen Material insbesondere von Gummi oder einem elastischen Kunststoff gebildet ist, – dass der Stator (3) mit seinem Hohlraum rohrförmig ausgebildet ist, – dass der Rotor (2) ein koaxiales Innenrohr (8) insbesondere aus Metall aufweist, das auf der vom Motor (6) angetriebenen Pumpenwelle (1) befestigt ist und – dass der Rotor (2) an einem Rohrende mit dem die Rohraußenkontur bildenden Rotorhohlzylinder (7) über eine flexible oder elastische Verbindungsstelle (9) verbunden ist.Eccentric screw pump with a rotor (2) with helical or helical outer contour, which is a shaft (1) by a motor (6) and a tumbling rotational movement in the pump stator (3) in a cavity, the inner surface of a helical or helical inner contour characterized in that - the surface of the stator cavity is formed of a rigid material, in particular of steel, - that at least the outer surface of the rotor (2) is formed of an elastic material, in particular of rubber or an elastic plastic, - that the stator (3) is tubular with its cavity, - that the rotor (2) has a coaxial inner tube (8), in particular of metal, which is mounted on the pump shaft (1) driven by the motor (6) and - that the rotor (2 ) At a pipe end with the tube outer contour forming hollow rotor cylinder (7) via a flexible or ela Stik junction (9) is connected.
Description
Die Erfindung betrifft eine Exzenterschneckenpumpe mit einem Rotor mit schneckenförmiger oder schraubenförmiger Außenkontur, der über eine Welle von einem Motor angetrieben ist und eine taumelnde Rotationsbewegung im Pumpenstator in einem Hohlraum ausübt, dessen innere Oberfläche eine schneckenförmige oder schraubenförmige Innenkontur aufweist.The invention relates to an eccentric screw pump with a rotor with helical or helical outer contour, which is driven by a shaft of a motor and a tumbling rotational movement in the pump stator in a cavity exerts, whose inner surface has a helical or helical inner contour.
Es sind Exzenterschneckenpumpen bekannt mit einem Rotor aus hartem Material, z. B. aus Metall, Keramik oder Hartkunststoff und mit flexiblem Stator aus einem Elastomer, wobei die exzentrische Bewegung zwischen Rotor und Stator dadurch erzielt wird, dass der Rotor starr mit der Antriebswelle verbunden ist und um seine Mittellinie rotiert, wobei der flexible Stator aus seiner Mittellage ausgelenkt wird und somit eine um die Mittellinie taumelnde Bewegung ausführt. Ferner sind Exzenterschneckenpumpen bekannt mit einem sogenannten „Rohrstator”, der aus einer Rohrkonstruktion mit einem darin formschlüssig befindlichen Elastomer oder aus einem rohrförmigen Bauteil aus einem Metall-Elastomer-Verbundmaterial besteht, wobei die gewendelt ausgeführte Oberfläche des Elastomers dem medienberührtenden Raum zugewandt ist. Der Rotor ist mit einer rotierenden Antriebswelle mit Hilfe eines flexiblen Biegestabes, einer Gelenkwelle oder einem ähnlich wirkenden Bauteil verbunden und führt innerhalb des starren Stators eine exzentrische Rotationsbewegung aus.There are progressing cavity pumps known with a rotor made of hard material, eg. As of metal, ceramic or hard plastic and flexible stator made of an elastomer, wherein the eccentric movement between the rotor and stator is achieved in that the rotor is rigidly connected to the drive shaft and rotates about its center line, wherein the flexible stator from its central position is deflected and thus performs a tumbling about the center line movement. Furthermore, eccentric screw pumps are known with a so-called "tube stator", which consists of a tube construction with a form-fitting elastomer or a tubular member made of a metal-elastomer composite, wherein the coiled running surface of the elastomer faces the media-contacting space. The rotor is connected to a rotating drive shaft by means of a flexible bending rod, a propeller shaft or a similar acting component and performs within the rigid stator an eccentric rotational movement.
Auch zeigt die
Ferner ist es aus der
Aufgabe der Erfindung ist es, eine Exzenterschneckenpumpe mit besserem Wirkungsgrad und geringem Verschleiß bei einfacher und kostengünstiger Konstruktion zu schaffen.The object of the invention is to provide an eccentric screw pump with better efficiency and low wear with a simple and inexpensive construction.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst,
- – dass die Oberfläche des Statorhohlraumes von einem starren Material insbesondere von Stahl gebildet ist und, dass zumindest die äußere Oberfläche des Rotors von einem elastischen Material insbesondere von Gummi oder einem elastischen Kunststoff gebildet ist,
- – dass zumindest die äußere Oberfläche des Rotors von einem elastischen Material insbesondere von Gummi oder einem elastischen Kunststoff gebildet ist,
- – dass der Stator mit seinem Hohlraum rohrförmig ausgebildet ist,
- – dass der Rotor ein koaxiales Innenrohr insbesondere aus Metall aufweist, das auf der vom Motor angetriebenen Pumpenwelle befestigt ist und
- – dass der Rotor an einem Rohrende mit dem die Rohraußenkontur bildenden Rotorhohlzylinder über eine flexible oder elastische Verbindungsstelle verbunden ist.
- That the surface of the stator cavity is formed by a rigid material, in particular of steel, and that at least the outer surface of the rotor is formed by an elastic material, in particular rubber or an elastic plastic,
- - That at least the outer surface of the rotor is formed of an elastic material, in particular of rubber or an elastic plastic,
- - That the stator is tubular with its cavity,
- - That the rotor has a coaxial inner tube, in particular made of metal, which is mounted on the pump shaft driven by the motor and
- - That the rotor is connected at one end of the tube with the tube outer contour forming hollow rotor cylinder via a flexible or elastic connection point.
Es wird eine Exzenterschneckenpumpe geschaffen mit verbesserter Pumpenkennlinie, insbesondere mit erhöhtem erzielbaren Förderdruck pro Pumpenstufe und steilerer Kennlinie. Eine solche Verdrängerpumpe wird besonders vorteilhaft in Anlagen zur Druckentwässerung von häuslichem Abwasser eingesetzt. Es wird eine Reduktion der Herstellungskosten durch Verringerung der Anzahl von Einzelteilen und vereinfachte Montage und durch die Möglichkeit der Verwendung von Standardkomponenten erreicht.It is an eccentric screw pump created with improved pump characteristic, in particular with increased achievable delivery pressure per pump stage and steeper characteristic. Such a displacement pump is used particularly advantageously in plants for pressure drainage of domestic wastewater. There is achieved a reduction in manufacturing costs by reducing the number of parts and simplified assembly and the possibility of using standard components.
Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen aufgeführt.Advantageous embodiments of the invention are listed in the subclaims.
Ein Ausführungsbeispiel ist in der Zeichnung schematisch in einem axialen Längsschnitt dargestellt und wird im Folgenden einschließlich Abwandlungen beschrieben.An embodiment is shown schematically in the drawing in an axial longitudinal section and will be described below including modifications.
Eine rotierende Verdrängerpumpe vom Typ einer Exzenterschneckenpumpe besitzt eine rotierende Antriebswelle, einen aus einem elastischen Material bestehenden Rotor mit einer schraubenförmigen Außenkontur, der an mindestens einem Ende mit der Antriebswelle verbunden ist und einen im wesentlichen rohrförmigen Stator, dessen innere Oberfläche eine schraubenförmige Kontur aufweist. Hierbei besteht der Rotor aus einem starren Material, vorzugsweise aus Stahl.A rotary displacement type positive displacement pump has a rotary drive shaft, a resilient material outer rotor having a helical outer contour connected at least at one end to the drive shaft, and a generally tubular stator having an inner surface with a helical contour. In this case, the rotor consists of a rigid material, preferably of steel.
Die Verbindung zwischen der Antriebswelle
An dem Ende der Antriebswelle
In einer Ausgestaltung ist die Antriebswelle der Pumpe die Verlängerung der Welle
Vorzugsweise ist die Rotor-Antriebswelleneinheit
Die Verbindung zwischen der Antriebswelle
Der Rotor
Je nach gewählter Verbindungstechnik für die Verbindung zwischen Antriebswelle
Der Rotor
Der Stator
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910010107 DE102009010107B4 (en) | 2009-02-21 | 2009-02-21 | Cavity Pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910010107 DE102009010107B4 (en) | 2009-02-21 | 2009-02-21 | Cavity Pump |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102009010107A1 DE102009010107A1 (en) | 2010-08-26 |
DE102009010107B4 true DE102009010107B4 (en) | 2015-01-22 |
Family
ID=42356693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200910010107 Active DE102009010107B4 (en) | 2009-02-21 | 2009-02-21 | Cavity Pump |
Country Status (1)
Country | Link |
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DE (1) | DE102009010107B4 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010053807A1 (en) * | 2010-12-08 | 2012-06-06 | Robert Bosch Gmbh | Gear shaft arrangement |
EP3108142B1 (en) | 2014-02-18 | 2017-11-15 | Vert Rotors UK Limited | Rotary positive-displacement machine |
CN109578270B (en) * | 2018-12-05 | 2023-10-31 | 盐城世宏石油装备有限公司 | All-metal gap bridge type screw pump |
CN109611329A (en) * | 2019-02-19 | 2019-04-12 | 盐城世宏石油装备有限公司 | A kind of processing method of rubber rotor screw oil well pump and rubber rotor |
CN113323883B (en) * | 2021-06-25 | 2023-01-10 | 太谷县旭阳机械有限公司 | Self-blockage-cleaning type sewage pump based on flexible pump body |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19501514A1 (en) * | 1995-01-19 | 1996-07-25 | Siekmann Fittings Gmbh & Co Kg | Spiralled rotor for pump on motor |
US6544015B1 (en) * | 1998-11-13 | 2003-04-08 | Wilhelm Kaechele Gmbh Elastomertechnik | Worm for an eccentric screw pump or a subsurface drilling motor |
DE602004010030T2 (en) * | 2003-10-09 | 2008-09-18 | Lehr Precision Inc., Cincinnati | Eccentric screw pump / motor stator, and apparatus and method for their production by means of electrochemical machining |
-
2009
- 2009-02-21 DE DE200910010107 patent/DE102009010107B4/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19501514A1 (en) * | 1995-01-19 | 1996-07-25 | Siekmann Fittings Gmbh & Co Kg | Spiralled rotor for pump on motor |
US6544015B1 (en) * | 1998-11-13 | 2003-04-08 | Wilhelm Kaechele Gmbh Elastomertechnik | Worm for an eccentric screw pump or a subsurface drilling motor |
DE602004010030T2 (en) * | 2003-10-09 | 2008-09-18 | Lehr Precision Inc., Cincinnati | Eccentric screw pump / motor stator, and apparatus and method for their production by means of electrochemical machining |
Also Published As
Publication number | Publication date |
---|---|
DE102009010107A1 (en) | 2010-08-26 |
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Legal Events
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final | ||
R084 | Declaration of willingness to licence |