EP0764783B1 - Exzenterschneckenpumpe - Google Patents
Exzenterschneckenpumpe Download PDFInfo
- Publication number
- EP0764783B1 EP0764783B1 EP96113275A EP96113275A EP0764783B1 EP 0764783 B1 EP0764783 B1 EP 0764783B1 EP 96113275 A EP96113275 A EP 96113275A EP 96113275 A EP96113275 A EP 96113275A EP 0764783 B1 EP0764783 B1 EP 0764783B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump according
- protruding parts
- rotor
- pump
- approximately
- 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.)
- Revoked
Links
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 235000011837 pasties Nutrition 0.000 claims abstract 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 239000011505 plaster Substances 0.000 claims description 2
- 230000004308 accommodation Effects 0.000 claims 1
- 238000009408 flooring Methods 0.000 claims 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 8
- 239000000806 elastomer Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000003068 static effect Effects 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
Definitions
- the invention relates to an eccentric screw pump one made of a practically rigid material, especially steel manufactured rotor driven by an electric motor and a stator with an elastomer lining.
- the maximum achievable delivery pressure is with these pumps by the effects of the sealing lines between the rotor and the elastomer lining.
- the hardness of the elastomer lining and its preload significant with respect to the rotor and it it is understood that under these conditions none geometrically accurate sealing lines, but narrow sealing surfaces arise.
- this fact means that of the rotor drives or the intended ones Corresponding requirements are to be met by electric motors.
- high static friction values are required overcome and countered larger breakaway torques become. Also arise at the start of pump operation unfavorable sliding friction values.
- the invention has for its object to pump the input to train the type mentioned so that when starting the Pump result in more favorable coefficients of friction and breakaway torques and accordingly smaller for this initial operation Drive powers are sufficient.
- the one facing the rotor i.e. the active one Surface of the elastomer lining of the stator has a fine structure special quality. It must have small projections have between which there is liquid or suitable areas with pulpy components of the material to be conveyed are located. In a way, this results in a Smear effect which results in a significantly reduced Current consumption leads and even so-called luminous flux electric motors (with two-pole connection) even for larger ones Operating pressures and pumps enabled.
- the projecting parts are expediently the Fine structure - in the not yet deformed state - not about even or according to the inner diameter of the lining rounded, but dome-shaped, so a non-linear Indentation characteristics of the fine protrusions to be able to achieve.
- the between the protruding parts not as recesses wide drainage channels, on the contrary shaped so that the desired lubricant effect is not caused by draining off all or part of the liquid or slurry will be annulled.
- the main parts of the pump shown in Fig. 1 are the Stator 1, a disc 2 for holding it and a rotor 3 located within the stator 1.
- the jacket 4 of the stator 1 is a segmented, if necessary Steel pipe, to the inside of a lining 5 made of rubber or rubber-like plastics is attached, which in turn has a pump cavity 6, which in the manner of a two-start high-helix thread is formed and to accommodate the rotor 3 made of steel is used. It has the shape of a catchy high helix thread and has a drive end Coupling piece 7 on that with a corresponding Coupling part of an electric motor as the drive motor of the pump is in operative connection.
- the eccentricity is with E designated.
- the pump cavity 6 is dimensioned so narrow that the lining 5 with a bias of about 5 - 10% the outer surface of the rotor 3, so that the desired To achieve delivery pressures for the above-mentioned pumping medium can.
- FIGS. 3 and 5 one section each e.g. play at 9 of the inner surface 8.
- the inner structure of a variety small crests 10 formed, the scaly and in rows 11, 12 and 13 are arranged one behind the other, namely in such a way that the individual crests 10 a row around about half a length L of the crests 10 of a row the crests 10 of the adjacent row are offset.
- Between the crests 10 are depressions 14 which the crests 10 separate.
- These recesses 14 are so dimensioned and also only zigzag with each other connected that in the recesses 14 during startup the liquid does not collect liquid or pulpy material can easily escape, so to speak the known to the automotive industry, but undesirable there To create aquaplaning effect. It's supposed to slide reached or a smear effect arise.
- the length L of the tips 10 should be about 2-5, preferably about 3.5 mm, the width b about o.8-1.4, preferably about 1.2 mm be.
- the height H of the crests 10 is approximately 0.01-0.2 mm.
- the crests 10 and 15 rows formed preferably at least approximately transverse to Longitudinal central axis of the stator 1 and the Ground plan of the protruding parts approximately oval or can be elliptical, rectangular or slightly trapezoidal.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Description
Claims (15)
- Exzenterschneckenpumpe mit einem aus einem praktisch starren Werkstoff gefertigten, von einem Elektromotor getriebenen Rotor (3) und einem eine Elastomerauskleidung (5) aufweisenden Stator (1), dadurch gekennzeichnet, daß zur Verminderung des Einschaltstromstoßes des Elektromotors bei einer Vorspannung der Elastomerauskleidung (5) von etwa 5 - 15% gegenüber dem Rotor (3) zumindest ein großer Teil, vorzugsweise aber die gesamte mit dem Rotor in Berührung kommende Fläche (8) der Elastomerauskleidung (5) zur Aufnahme flüssiger oder breiiger Anteile des Fördergutes zwischen vorspringenden Teilen (10, 15) einer Feinstruktur in dieser Fläche ausgebildet ist.
- Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß die vorspringenden Teile (10, 15) Kuppen sind.
- Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Feinstruktur in der Ansicht nach Art ineinandergeschachtelter Schuppen ausgebildet ist.
- Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß die vorspringenden Teile (10) in Reihen (11, 12, 13) hintereinander liegend angeordnet und benachbarte Teile (10) benachbarter Reihen gegeneinander versetzt sind.
- Pumpe nach Anspruch 4, dadurch gekennzeichnet, daß der Versatz etwa der halben Länge der vorspringenden Teile (10) entspricht.
- Pumpe nach Anspruch 2, dadurch gekennzeichnet, daß die Kuppen (10) ineinander übergehen.
- Pumpe nach Anspruch 2, dadurch gekennzeichnet, daß die Kuppen (15) im Abstand voneinander angeordnet und die elastische Verformbarkeit der Kuppen (15) derart groß sind, daß im Betriebszustand der Pumpe die durch den gegenseitigen Abstand bedingten Kanäle (17, 18) in ihrer Breite wesentlich verringerbar sind.
- Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß die vorspringenden Teile (10, 15) in Reihen hintereinander angeordnet sind und ihre Erstreckungen in Richtung der Reihen wesentlich größer ist als die Erstreckung quer hierzu.
- Pumpe nach Anspruch 8, dadurch gekennzeichnet, daß die vorspringenden Teile im wesentlichen einen ovalen, rechteckigen oder leicht trapezförmigen Grundriß aufweisen.
- Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß die vorspringenden Teile (10, 15) derart gestaltet und verformbar sind, daß beim Betrieb der Pumpe im verformten Zustand dieser Teile zwischen ihnen Räume zur Aufnahme des Fördermittels verbleiben.
- Pumpe nach Anspruch 8, dadurch gekennzeichnet, daß die Länge (L) der vorspringenden Teile etwa 2 - 5 mm vorzugsweise etwa 3,5 mm und die Breite etwa 0,8 - 1,4 mm, vorzugsweise etwa 1,2 mm beträgt.
- Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Höhe (H) der vorspringenden Teile (10, 15) etwa 0,01 bis 0,2 mm beträgt.
- Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß ihr Antrieb ein Lichtstrommotor ist.
- Pumpe nach Anspruch 9, dadurch gekennzeichnet, daß sich die vorspringenden Teile im wesentlichen quer zur Längsachse des Stators (1) bzw. zur Rotationsachse des Rotors (3) erstrecken.
- Die Verwendung der Pumpe nach einem oder mehreren vorhergehenden Ansprüchen zur Förderung von Putz, Mörtel, Estrich oder ähnlichen in der Bautechnik benutzten Fördermedien.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19534774A DE19534774A1 (de) | 1995-09-19 | 1995-09-19 | Exzenterschneckenpumpe |
| DE19534774 | 1995-09-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0764783A1 EP0764783A1 (de) | 1997-03-26 |
| EP0764783B1 true EP0764783B1 (de) | 2001-02-28 |
Family
ID=7772592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96113275A Revoked EP0764783B1 (de) | 1995-09-19 | 1996-08-20 | Exzenterschneckenpumpe |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0764783B1 (de) |
| AT (1) | ATE199437T1 (de) |
| DE (2) | DE19534774A1 (de) |
| ES (1) | ES2156242T3 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9228585B2 (en) | 2013-03-22 | 2016-01-05 | Wilhelm Kachele Gmbh | Eccentric screw machine with asymmetrical projections |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19851325C2 (de) * | 1998-10-12 | 2001-05-10 | Allweiler Ag | Verfahren zum Herstellen eines schneckenförmigen Rotors sowie Rotor für eine Exzenterschneckenpumpe |
| DE10245497C5 (de) * | 2002-09-27 | 2009-02-19 | Wilhelm Kächele GmbH Elastomertechnik | Exzenterschneckenpumpe mit vergrößertem Temperaturbereich |
| DE102005028818B3 (de) | 2005-06-22 | 2006-08-24 | Artemis Kautschuk- Und Kunststoff-Technik Gmbh | Stator für eine Exzenterschneckenpumpe und Verfahren zu seiner Herstellung |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2512792A1 (de) * | 1975-03-22 | 1976-09-30 | Gummi Jaeger Kg Gmbh & Cie | Nachstellbarer stator fuer exzenterschneckenpumpen |
| DE4111166C2 (de) * | 1991-04-06 | 1999-03-18 | Gummi Jaeger Kg Gmbh & Cie | Exzenterschneckenpumpe |
-
1995
- 1995-09-19 DE DE19534774A patent/DE19534774A1/de not_active Withdrawn
-
1996
- 1996-08-20 ES ES96113275T patent/ES2156242T3/es not_active Expired - Lifetime
- 1996-08-20 EP EP96113275A patent/EP0764783B1/de not_active Revoked
- 1996-08-20 DE DE59606491T patent/DE59606491D1/de not_active Revoked
- 1996-08-20 AT AT96113275T patent/ATE199437T1/de not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9228585B2 (en) | 2013-03-22 | 2016-01-05 | Wilhelm Kachele Gmbh | Eccentric screw machine with asymmetrical projections |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2156242T3 (es) | 2001-06-16 |
| DE19534774A1 (de) | 1997-03-20 |
| DE59606491D1 (de) | 2001-04-05 |
| ATE199437T1 (de) | 2001-03-15 |
| EP0764783A1 (de) | 1997-03-26 |
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