EP1400694A2 - Exzenterschneckenpumpe mit Reservestator - Google Patents
Exzenterschneckenpumpe mit Reservestator Download PDFInfo
- Publication number
- EP1400694A2 EP1400694A2 EP03020374A EP03020374A EP1400694A2 EP 1400694 A2 EP1400694 A2 EP 1400694A2 EP 03020374 A EP03020374 A EP 03020374A EP 03020374 A EP03020374 A EP 03020374A EP 1400694 A2 EP1400694 A2 EP 1400694A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- eccentric screw
- screw pump
- reserve
- rotor
- 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.)
- Withdrawn
Links
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 for pumping liquid up pasty products that have a drive that is connected via a drive shaft with a Rotor is connected, a first stator and at least one further Reservestator are provided.
- a corresponding arrangement of rotor and stator or replacement stator is shown in the DE 33 45 233 C2.
- the eccentric screw pumps are located themselves at great depths of up to a few hundred meters. Since it is worn out of a stator would be very expensive to get the pump from this depth one or more replacement stators are provided, which are spaced apart are arranged. The riser fills the distance between the stators. If there is a deployment, the reserve statator (s) will be used for this Use the linkage lengthened or shortened.
- a stator for an eccentric screw pump is known from DE 19 85 861 U, which is composed of two parts. The joints of the two parts are through sealed a sealing ring. The rotor extends over both stator parts.
- the invention is therefore based on the task, the overall length and to reduce the mechanical expenditure of the pump when using reserve stators.
- stator with the reserve stator is without Gaped together.
- the two stator elements are advantageous placed in a stator housing and manufactured as one piece.
- the switch to using the reserve stator is advantageously carried out in that the two stators in direct connection with each other 180 ° to its longitudinal axis, whereby the reserve stator in the Effective range of the rotor reaches.
- the flexurally elastic shaft is required to compensate for those generated by the rotor Eccentricity due to its modulus of elasticity a certain length. Thereby, that the flexurally elastic wave beyond the pump housing also beyond the the stator part closest to the drive extends the overall length of the pump the length of the stator or reserve stator is reduced.
- the stator can be one Intermediate tube can be supplemented.
- This intermediate pipe can be used both on the direct suction-side connection of the stator after the pump housing can be arranged as also at the pressure side end of the stator in front of the outlet port. Because of the engagement this intermediate tube at the suction end of the stator is for the Bending elastic shaft maintain the required length, regardless of which Structeil is in use.
- FIG. 1 shows an eccentric screw pump 10 of the Moineau type with a drive 12 and a gear 14, which is connected to a drive shaft 16 via a hollow shaft connected is.
- the drive shaft 16 is provided with a seal 18 which Prevention of product in the area of storage 20 prevented.
- the flexible shaft 22 and the drive shaft 16 are by a screw, Shrink or adhesive connection fixed in rotation with each other.
- the pump housing 26 has an inlet connection 28 through which the product into the Eccentric screw pump 10 is sucked. By loosening the screw 30 and Opening the quick release device 32 allows the entire stator 38 to be opened simultaneously with the end piece 34, with the rotor 36, the flexible shaft 22, the Drive shaft 16 and the seal 18 as a unit from the pump housing 26 and Pull off drive 12 and replace it with a new exchange unit.
- the stator itself consists of a deformable inner layer with at least one two-turn helix to accommodate the rotor and a rigid stator jacket.
- the Stator 38 is made up of a working area 42 in which rotor 36 is located is located, and a reserve area 44 together. By reversing the stator 38 by 180 ° to the longitudinal axis of the eccentric screw pump 10 Reserve area 44 in connection with the rotor.
- the intermediate tube 40 is between the pressure side End of the stator 38 and the end connector 34 to the portion of the stator 38 is currently involved in pump operation, is subject to a certain amount of wear. Is this wear and tear caused by decreasing pump pressure or similar? wear characteristics determined, the pump operation is stopped and the quick-release devices are released 32, puts the intermediate pipe 40 directly to the pump housing 26 and closes the Quick release device 32. Moved by moving the intermediate housing not the position of the rotor 36, but the position of the stator 38 and thus shifts the area in which the rotor with the stator 38 as a pump works together by half the total stator length.
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
Description
- 10
- Exzenterschneckenpumpe
- 12
- Antrieb
- 14
- Getriebe
- 16
- Antriebswelle
- 18
- Dichtung
- 20
- Lagerung
- 22
- Welle
- 26
- Pumpengehäuse
- 28
- Einlaufstutzen
- 30
- Schraube
- 32
- Schnell spannvorrichtung
- 34
- Endstutzen
- 36
- Rotor
- 38
- Stator
- 40
- Zwischenrohr
- 42
- Arbeitsbereich
- 44
- Reservebereich
Claims (7)
- Exzenterschneckenpumpe (10) zur Förderung flüssiger bis pastöser Produkte, die einen Antrieb (12) aufweist, der über eine Antriebswelle (16) mit einem Rotor (36) in Verbindung steht, wobei ein erster Statoren (38) und mindestens ein weiterer Reservestator vorgesehen sind,
dadurch gekennzeichnet, daß der Stator (38) und der mindestens eine weitere Reservestator ohne Zwischenraum aneinandergefügt sind, so daß der Stator einen Arbeitsbereich (42) und einen Reservebereich (44) aufweist, wobei der Stator zur Umschaltung der Bereiche umgekehrt oder verschoben wird. - Exzenterschneckenpumpe nach Anspruch 1,
dadurch gekennzeichnet, daß ein Stator und mindestens ein weiterer Reservestator zu einem Stator (38) in einem Statormantel zusammengesetzt sind. - Exzenterschneckenpumpe nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß .der Wechsel des Eingriffs des Rotors vom benutzten Teil des Stators zum in Reserve gehaltenen Teil des Stators durch Umkehren des gesamten Stators (38) um 180 ° zu einer Längsachse geschieht. - Exzenterschneckenpumpe nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß der Rotor über eine biegeelastische Welle (22) mit dem Antrieb (12) in Verbindung steht, die sich stets auch über die dem Antrieb nächstgelegene freie Statorhälfte erstreckt. - Exzenterschneckenpumpe nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß der Stator (38) ein Zwischenrohr (40) aufweist, das sowohl am saug- als auch am druckseitigen Ende des Stators (38) angeordnet sein kann. - Exzenterschneckenpumpe nach Anspruch 4 und 5,
dadurch gekennzeichnet, daß sich die biegeelastische Welle (22) durch das Zwischenrohr (20) hindurch bis zum Stator (38) erstreckt. - Exzenterschneckenpumpe nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß der Stator (38) über die Schnellspannvorrichtung (32) mit dem Pumpengehäuse (26) und dem Endstutzen (34) verbunden ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10243674 | 2002-09-20 | ||
DE10243674A DE10243674B3 (de) | 2002-09-20 | 2002-09-20 | Exzenterschneckenpumpe mit Reservestator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1400694A2 true EP1400694A2 (de) | 2004-03-24 |
EP1400694A3 EP1400694A3 (de) | 2006-04-26 |
Family
ID=31896218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03020374A Withdrawn EP1400694A3 (de) | 2002-09-20 | 2003-09-10 | Exzenterschneckenpumpe mit Reservestator |
Country Status (3)
Country | Link |
---|---|
US (1) | US7104770B2 (de) |
EP (1) | EP1400694A3 (de) |
DE (1) | DE10243674B3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1970569A1 (de) * | 2007-03-16 | 2008-09-17 | Knoll Maschinenbau Gmbh | Exzenterschneckenpumpe mit Pumpengehäuse |
CN109072904A (zh) * | 2016-04-28 | 2018-12-21 | Bsh家用电器有限公司 | 偏心螺杆泵 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8967985B2 (en) | 2012-11-13 | 2015-03-03 | Roper Pump Company | Metal disk stacked stator with circular rigid support rings |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1985861U (de) * | 1968-01-25 | 1968-05-22 | Max Streicher | Statorenanordnung, insbesondere fuer exzenterschneckenpumpen. |
DE3345233A1 (de) * | 1983-12-14 | 1985-06-27 | Joh. Heinrich Bornemann GmbH & Co KG, 3063 Obernkirchen | Exzenterschneckenpumpe zum foerdern von fluessigkeiten aus bohrloechern, insbesondere aus erdoel-bohrloechern |
WO2010021549A1 (en) * | 2008-08-21 | 2010-02-25 | Agr Subsea As | Outer rotor of a progressing cavity pump having an inner and an outer rotor |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2957427A (en) * | 1956-12-28 | 1960-10-25 | Walter J O'connor | Self-regulating pumping mechanism |
FR1189319A (fr) * | 1956-12-28 | 1959-10-01 | Mécanisme de pompage auto-régulateur | |
SE307736B (de) * | 1964-08-18 | 1969-01-13 | Flygts Pumpar Ab | |
DE4330226C1 (de) * | 1993-09-07 | 1994-09-08 | Bornemann J H Gmbh & Co | Exzenterschneckenpumpe |
US5807087A (en) * | 1997-03-21 | 1998-09-15 | Tarby, Inc. | Stator assembly for a progressing cavity pump |
-
2002
- 2002-09-20 DE DE10243674A patent/DE10243674B3/de not_active Expired - Fee Related
-
2003
- 2003-09-10 EP EP03020374A patent/EP1400694A3/de not_active Withdrawn
- 2003-09-22 US US10/665,554 patent/US7104770B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1985861U (de) * | 1968-01-25 | 1968-05-22 | Max Streicher | Statorenanordnung, insbesondere fuer exzenterschneckenpumpen. |
DE3345233A1 (de) * | 1983-12-14 | 1985-06-27 | Joh. Heinrich Bornemann GmbH & Co KG, 3063 Obernkirchen | Exzenterschneckenpumpe zum foerdern von fluessigkeiten aus bohrloechern, insbesondere aus erdoel-bohrloechern |
WO2010021549A1 (en) * | 2008-08-21 | 2010-02-25 | Agr Subsea As | Outer rotor of a progressing cavity pump having an inner and an outer rotor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1970569A1 (de) * | 2007-03-16 | 2008-09-17 | Knoll Maschinenbau Gmbh | Exzenterschneckenpumpe mit Pumpengehäuse |
CN109072904A (zh) * | 2016-04-28 | 2018-12-21 | Bsh家用电器有限公司 | 偏心螺杆泵 |
CN109072904B (zh) * | 2016-04-28 | 2020-01-10 | Bsh家用电器有限公司 | 偏心螺杆泵 |
Also Published As
Publication number | Publication date |
---|---|
DE10243674B3 (de) | 2004-04-01 |
US7104770B2 (en) | 2006-09-12 |
US20050100468A1 (en) | 2005-05-12 |
EP1400694A3 (de) | 2006-04-26 |
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Owner name: NETZSCH PUMPEN & SYSTEME GMBH |
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18D | Application deemed to be withdrawn |
Effective date: 20160518 |