EP0947700A1 - Exzenterschneckenpumpe - Google Patents
Exzenterschneckenpumpe Download PDFInfo
- Publication number
- EP0947700A1 EP0947700A1 EP99103358A EP99103358A EP0947700A1 EP 0947700 A1 EP0947700 A1 EP 0947700A1 EP 99103358 A EP99103358 A EP 99103358A EP 99103358 A EP99103358 A EP 99103358A EP 0947700 A1 EP0947700 A1 EP 0947700A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- eccentric screw
- coupling rod
- connecting shaft
- screw pump
- pump according
- 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.)
- Granted
Links
- 230000008878 coupling Effects 0.000 claims abstract description 21
- 238000010168 coupling process Methods 0.000 claims abstract description 21
- 238000005859 coupling reaction Methods 0.000 claims abstract description 21
- 229920002302 Nylon 6,6 Polymers 0.000 claims abstract description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 3
- 239000010439 graphite Substances 0.000 claims abstract description 3
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 abstract 1
- 239000011151 fibre-reinforced plastic Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000012815 thermoplastic material Substances 0.000 abstract 1
- 239000004033 plastic Substances 0.000 description 12
- 229920003023 plastic Polymers 0.000 description 12
- 238000010276 construction Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 230000008407 joint function Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/08—Thermoplastics
Definitions
- the invention relates to an eccentric screw pump, with an eccentric screw rotor mounted in an eccentric screw stator, with one in one to the eccentric screw stator connected suction housing Coupling rod and one in one to the suction housing connected seal housing, to a Drive shaft leading connecting shaft.
- Eccentric screw pumps are the eccentric screw rotor, the coupling rod and the connecting shaft regularly Made of stainless steel and with the interposition of Joints connected together. At least the eccentric screw rotor often receives an additional one Surface coating or is polished.
- For the Articulated connections generally become several components and elastic cuffs needed - such Construction is in constructive and material terms complex. The invention seeks to remedy this.
- the invention has for its object a Eccentric screw pump of the embodiment described above creating an extremely simple, functional and also cost-saving Excellent design.
- the invention solves this problem with a generic one Eccentric screw pump in that the eccentric screw rotor, the coupling rod and the connecting shaft as one-piece component made of thermoplastic are executed. After further recommendation of the invention points the component in the transition areas from the Eccentric screw rotor to the coupling rod and from the Coupling rod to the connecting shaft constrictions, e.g. concave diameter reductions, which the otherwise replace required joints. - These measures of Invention have the consequence that in the invention Eccentric screw pump only one rotating Plastic unit for power transmission and product promotion is needed.
- an aseptic Realized construction which for the promotion of particularly suitable for food and pharmaceutical products is, especially since the eccentric screw pump according to the invention due to the one-piece construction of eccentric screw rotor, Coupling rod and connecting shaft made of plastic through special hygienic cleanliness and optimal Excellent corrosion resistance.
- the plastic construction according to the invention on the one hand, sufficient bending stiffness to generate high pump pressures up to 24 bar, for example, on the other hand nevertheless has such a bending elasticity, that the usual hinge connections between Eccentric screw rotor, coupling rod and connecting shaft can be omitted and nevertheless achieved joint function becomes. This joint function is supported by the corresponding Cross section of concave constrictions between eccentric screw rotor, Coupling rod and connecting shaft optimized.
- the eccentric screw rotor can be made of plastic even then if the eccentric screw stator is also made of plastic exists, regardless of whether it is an elastomer or an inelastic plastic.
- a construction realized due to the one-piece plastic component for the rotating pump train through a distinguishes simple and functional construction, which is also inexpensive.
- the special one Significance is provided that the one-piece Component made of glass fiber reinforced plastic and consequently enables a particularly high power transmission and is particularly true to size.
- the one-piece component Polyamide, e.g. Polyamide 66.
- This plastic stands out due to elastic rigidity, high abrasion resistance and Dimensional stability is beyond sterilizable and has barrier properties against Flavorings. Therefore, this plastic is especially for the one-piece construction of eccentric screw rotor, Coupling rod and connecting shaft suitable, especially since he in those properties physically and chemically includes which for the pump line of an eccentric screw pump needed to promote especially pharmaceutical and food products, but also Cosmetics and paint products serves.
- the one-piece component can also be made of polytetrafluoroethylene exist, which is characterized by special Excellent lubricating properties.
- a Embodiment with a graphite filling of 10% to 15% prefers.
- the pump drive with the drive shaft 7 is only indicated.
- the eccentric screw rotor 3, the coupling rod 5 and the Connecting shaft 8 are made as a one-piece component thermoplastic plastic.
- the plastic component points in the transition areas from the Eccentric screw rotor 3 to the coupling rod 5 and from the coupling rod 5 to the connecting shaft 8 diameter reductions on what else in these areas replace the required articulated connections.
- the exemplary embodiment concerns these diameter reductions from concave cross-sections 9.
- the one-piece plastic component 3, 5, 8 can be made of glass fiber reinforced Plastic consist of power transmission on the one hand and the dimensional accuracy of this on the other hand to optimize the rotating pump line.
- the embodiment consists of the one-piece plastic component 3, 5, 8 made of polyamide, namely polyamide 66 and leaves easily manufactured by injection molding. About that is also a machining and the Compliance with the finest tolerances possible.
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)
- Reciprocating Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
- Fig. 1
- eine erfindungsgemäße Exzenterschneckenpumpe in schematischer Darstellung und teilweisem Längsschnitt, und
- Fig. 2
- einen Pumpenstrang für den Gegenstand nach Fig. 1 aus Exzenterschneckenrotor, Kupplungsstange und Verbindungswelle.
Claims (7)
- Exzenterschneckenpumpe, mit einem in einem Exzenterschneckenstator gelagerten Exzenterschneckenrotor, mit einer in einem an den Exzenterschneckenstator angeschlossenen Sauggehäuse gelagerten Kupplungsstange und mit einer in einem an das Sauggehäuse angeschlossenen Dichtungsgehäuse gelagerten, zu einer Antriebswelle führenden Verbindungswelle, dadurch gekennzeichnet, daß der Exzenterschneckenrotor (3), die Kupplungsstange (5) und die Verbindungswelle (8) als einteiliges Bauteil aus thermoplastischem Kunststoff ausgeführt sind.
- Exzenterschneckenpumpe nach Anspruch 1, dadurch gekennzeichnet, daß das Bauteil (3, 5, 8) in den Übergangsbereichen von dem Exzenterschneckenrotor (3) zu der Kupplungsstange (5) und von der Kupplungsstange (5) zu der Verbindungswelle (8) gelenkbildende Einschnürungen (9) aufweist.
- Exzenterschneckenpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das einteilige Bauteil (3, 5, 8) aus glasfaserverstärktem Kunststoff besteht.
- Exzenterschneckenpumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das einteilige Bauteil (3, 5, 8) aus Polyamid, z.B. Polyamid 66 besteht.
- Exzenterschneckenpumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das einteilige Bauteil (3, 5, 8) aus Polytetrafluorethylen besteht.
- Exzenterschneckenpumpe nach einem der Ansprüche 1 bis 3 oder 5, dadurch gekennzeichnet, daß das Bauteil (3, 5, 8) aus Polytetrafluorethylen eine Graphitfüllung von 10 % bis 15 % aufweist.
- Exzenterschneckenpumpe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der gesamte Bereich der Kupplungsstange (5) als Gelenk dient und entsprechend eingeschnürt ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813999A DE19813999C1 (de) | 1998-03-28 | 1998-03-28 | Exzenterschneckenpumpe |
| DE19813999 | 1998-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0947700A1 true EP0947700A1 (de) | 1999-10-06 |
| EP0947700B1 EP0947700B1 (de) | 2004-01-28 |
Family
ID=7862839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99103358A Expired - Lifetime EP0947700B1 (de) | 1998-03-28 | 1999-02-20 | Exzenterschneckenpumpe |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6155807A (de) |
| EP (1) | EP0947700B1 (de) |
| JP (1) | JPH11311187A (de) |
| CN (1) | CN1162622C (de) |
| AT (1) | ATE258651T1 (de) |
| CA (1) | CA2264361A1 (de) |
| DE (2) | DE19813999C1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017186495A1 (de) * | 2016-04-28 | 2017-11-02 | BSH Hausgeräte GmbH | Haushaltsgerät |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10243675B3 (de) * | 2002-09-20 | 2004-01-29 | Netzsch-Mohnopumpen Gmbh | Exzenterschneckenpumpe mit Austauscheinheit |
| DE10335966B3 (de) * | 2003-08-04 | 2004-08-26 | Netzsch-Mohnopumpen Gmbh | Exzenterschneckenpumpe |
| DE102004060222A1 (de) * | 2004-12-15 | 2006-06-29 | Netzsch-Mohnopumpen Gmbh | Exzenterschneckenpumpe in Kompaktbauweise |
| US7530217B2 (en) * | 2005-12-16 | 2009-05-12 | General Electric Company | Axial flow positive displacement gas generator with combustion extending into an expansion section |
| US7726115B2 (en) * | 2006-02-02 | 2010-06-01 | General Electric Company | Axial flow positive displacement worm compressor |
| US20070237642A1 (en) * | 2006-04-10 | 2007-10-11 | Murrow Kurt D | Axial flow positive displacement worm pump |
| CN100507274C (zh) * | 2006-11-03 | 2009-07-01 | 江苏大学 | 电动机螺杆泵 |
| JP5070515B2 (ja) * | 2007-03-08 | 2012-11-14 | 兵神装備株式会社 | ロータ駆動機構及びポンプ装置 |
| US8708643B2 (en) | 2007-08-14 | 2014-04-29 | General Electric Company | Counter-rotatable fan gas turbine engine with axial flow positive displacement worm gas generator |
| US20090211474A1 (en) * | 2008-02-22 | 2009-08-27 | Atwater Richard G | Printing press inking systems |
| US7854111B2 (en) * | 2008-03-07 | 2010-12-21 | General Electric Company | Axial flow positive displacement turbine |
| US20100029525A1 (en) | 2008-07-31 | 2010-02-04 | Chevron Oronite Company Llc | Antiwear hydraulic fluid composition with useful emulsifying and rust prevention properties |
| WO2015004903A1 (ja) * | 2013-07-09 | 2015-01-15 | 兵神装備株式会社 | 化粧品のオーダーメイドシステムおよび調合システム |
| CN105408631B (zh) * | 2014-05-16 | 2017-10-13 | 广州华力新能源发展有限公司 | 单螺杆泵及使用该单螺杆泵的风力抽水系统 |
| CN104454522A (zh) * | 2014-12-14 | 2015-03-25 | 张成功 | 串联式两级机械密封装置 |
| BR102019005114B1 (pt) * | 2019-03-15 | 2023-12-05 | Leandro José Agostini | Bomba de cavidades progressivas para indústria tintométrica |
| US11332978B1 (en) | 2020-11-11 | 2022-05-17 | Halliburton Energy Services, Inc. | Offset coupling for mud motor drive shaft |
| JP2024006321A (ja) * | 2022-07-01 | 2024-01-17 | 国立大学法人山形大学 | 一軸偏心ねじポンプ、3dプリンタ、一軸偏心ねじポンプの製造方法 |
| DE102022127309A1 (de) | 2022-10-18 | 2024-04-18 | Visec (Asia) Technology Pte Ltd. | Verfahren und Spritzgussform zur Herstellung einer Rotoreinheit für eine Exzenterschneckenpumpe sowie eine Rotoreinheit, eine Statoreinheit und eine Exzenterschneckenpumpe |
| US12152588B1 (en) | 2023-05-26 | 2024-11-26 | Grant Prideco, Inc. | Free-mold stator for a progressing cavity pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2040748A1 (de) * | 1970-08-17 | 1972-02-24 | Willy John | Schraubenpumpe mit Drehstab |
| US5108273A (en) * | 1990-08-30 | 1992-04-28 | Robbins & Myers, Inc. | Helical metering pump having different sized rotors |
| DE4303463A1 (de) * | 1993-02-06 | 1994-08-11 | Abb Patent Gmbh | Fördervorrichtung |
| WO1997040273A1 (en) * | 1996-04-24 | 1997-10-30 | Wood Steven M | Progressive cavity pumps using composite materials |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3844800A (en) * | 1969-02-14 | 1974-10-29 | Bendix Corp | Friction material |
| DE3424212A1 (de) * | 1984-06-30 | 1986-01-23 | Arnold 3167 Burgdorf Jäger | Stator fuer exzenterschneckenpumpen |
| DE4330226C1 (de) * | 1993-09-07 | 1994-09-08 | Bornemann J H Gmbh & Co | Exzenterschneckenpumpe |
| US5769618A (en) * | 1995-09-25 | 1998-06-23 | Heishin Sobi Kabushiki Kaisha | Uniaxial eccentric screw pump having a flexible plastic shaft |
-
1998
- 1998-03-28 DE DE19813999A patent/DE19813999C1/de not_active Expired - Fee Related
-
1999
- 1999-02-20 AT AT99103358T patent/ATE258651T1/de not_active IP Right Cessation
- 1999-02-20 DE DE59908390T patent/DE59908390D1/de not_active Expired - Lifetime
- 1999-02-20 EP EP99103358A patent/EP0947700B1/de not_active Expired - Lifetime
- 1999-03-23 CA CA002264361A patent/CA2264361A1/en not_active Abandoned
- 1999-03-25 US US09/276,359 patent/US6155807A/en not_active Expired - Lifetime
- 1999-03-26 JP JP11084410A patent/JPH11311187A/ja not_active Withdrawn
- 1999-03-26 CN CNB991043871A patent/CN1162622C/zh not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2040748A1 (de) * | 1970-08-17 | 1972-02-24 | Willy John | Schraubenpumpe mit Drehstab |
| US5108273A (en) * | 1990-08-30 | 1992-04-28 | Robbins & Myers, Inc. | Helical metering pump having different sized rotors |
| DE4303463A1 (de) * | 1993-02-06 | 1994-08-11 | Abb Patent Gmbh | Fördervorrichtung |
| WO1997040273A1 (en) * | 1996-04-24 | 1997-10-30 | Wood Steven M | Progressive cavity pumps using composite materials |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017186495A1 (de) * | 2016-04-28 | 2017-11-02 | BSH Hausgeräte GmbH | Haushaltsgerät |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2264361A1 (en) | 1999-09-28 |
| EP0947700B1 (de) | 2004-01-28 |
| CN1233714A (zh) | 1999-11-03 |
| CN1162622C (zh) | 2004-08-18 |
| JPH11311187A (ja) | 1999-11-09 |
| US6155807A (en) | 2000-12-05 |
| DE59908390D1 (de) | 2004-03-04 |
| DE19813999C1 (de) | 1999-11-25 |
| ATE258651T1 (de) | 2004-02-15 |
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