EP0664398B1 - Kreiselpumpe mit den Rückfluss verhinderndem Ventil - Google Patents
Kreiselpumpe mit den Rückfluss verhinderndem Ventil Download PDFInfo
- Publication number
- EP0664398B1 EP0664398B1 EP95100590A EP95100590A EP0664398B1 EP 0664398 B1 EP0664398 B1 EP 0664398B1 EP 95100590 A EP95100590 A EP 95100590A EP 95100590 A EP95100590 A EP 95100590A EP 0664398 B1 EP0664398 B1 EP 0664398B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- centrifugal pump
- pump according
- stage
- last
- annular
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
- F04D15/0083—Protection against sudden pressure change, e.g. check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
- F04D1/063—Multi-stage pumps of the vertically split casing type
- F04D1/066—Multi-stage pumps of the vertically split casing type the casing consisting of a plurality of annuli bolted together
Definitions
- the invention relates in particular to a multi-stage centrifugal pump multi-stage inline pump with the impeller shaft Storage and with a backflow preventing valve, the medium emerging from the last stage is pressed into an annular space surrounding the steps, from which it flows to the outlet.
- Inline pumps are in the prior art from DE 93 10 091, US 4,244,675 known.
- the object of the invention is a pump of the beginning to improve the type mentioned so that at simple Construction, small size and simple assembly only slight within the valve Flow velocities occur so that low Losses and noises arise.
- the return valve can flow in the direction of flow behind the pump, especially behind the last one Pump stage and close to the bearing and / or the Shaft seal can be arranged that the pump suction and discharge nozzle is facing away.
- the check valve in Flow direction behind the pump, especially behind the last pump stage and near or in that Annulus outlet, especially near the first pump stage is arranged.
- Such a diaphragm valve does not need an additional one Housing and can despite the small external dimensions Overall pump be designed relatively oversized, which means low flow rates and thus a low resistance arises, so that flow losses and noises remain very low.
- Reflux valve with a ring membrane surrounding a chamber in which the pump in particular the last pump stage promotes. It is also advantageously proposed that the support surface for the ring membrane from within the ring membrane, conically shaped on the outside Support part is formed with flow openings.
- the ring membrane at the same time the pump housing seal between the Annulus surrounding cylinder (casing) and that Shaft-sealing supporting housing part forms. With that comes the ring membrane has a double function.
- each a manually operated shut-off valve in particular one flap valve is arranged.
- the pump hydraulics with the integrated Check valve completely closed for revision be so that assembly or disassembly and repair are greatly relieved.
- the flaps are reached when the locking piece especially the flap from a sealing sleeve flexible material is surrounded, at least the nozzle partially lined.
- the sealing sleeve outwards beyond the sealing surface of the connection flange be guided so that the sealing material of both Sealing the flap and the connection serves.
- FIG. 1 and 2 has a package of pump stages 1, one after the other are switched and the wheels 2 on one Impeller shaft 3, which are supported by a bearing 4 is.
- the close to the suction port 6 and pressure port 7 bearing 4 is located approximately in the area of the first pump stage, and the one removed from the suction and discharge port Shaft seal 5 is in the area of the rear housing part 8 attached, which is also called "pump lantern".
- the last pump stage pumps into an annular chamber 9, which is surrounded by a support member 10 and through which the impeller shaft 3 runs coaxially.
- the Support member 10 is conically shaped, being closer to the Stub 6.7 has a smaller diameter than in more distant area.
- the support member 10 has numerous flow openings 11, and at its On the outside there is a non-pump correspondingly conically shaped flexible membrane 12. This membrane is from the support part when the pump is pumping 10 lifted outwards, so that the pumped medium in can enter an annular space 13, all pump stages outside coaxially surrounds.
- the outer surface of the annulus 13 is formed by a cylindrical housing jacket 14, which can consist of a thin-walled tube.
- the pumped liquid flows from the annular space 13 to Pressure port 7, like the suction port 6 of one Terminal housing 15 is formed.
- Suction nozzle 6 and Pressure port 7 are in the connection housing to each other aligned, so that the multi-stage centrifugal pump one In-line pump is.
- the ring membrane 12 forms with its outer annular At the same time end the pump housing seal between the the cylindrical housing jacket 14 surrounding the annular space 13 and the rear housing part 8.
- the support surface forming component or support member 10 is in Embodiment according to Figures 1 and 2 in one piece with the Housing part 8 executed and can be made together with this Cast metal.
- the support member 10 consists of a Deep-drawn sheet metal part that is between the last pump stage and the housing part 8 is mounted.
- each rotatable flap 16, 17 stored in each case a rotatable flap 16, 17 stored.
- the inside of each socket 6,7 is in the area of the flap 16,17 Sealing sleeve 22.23 lined accordingly is cylindrical.
- the outer end of the two Cuffs 22,23 is so far outwards over the Sealing surface of the flange led each nozzle that the Cuff there an annular sealing surface 24.25 forms.
- Embodiment is particularly the last Pump stage the support surface for the ring membrane, so that the support part 10 is formed by this pump stage.
- the suction and Pressure port 6.7 is close.
- an intermediate part (flange part) 28 which the housing part 8 and the housing part 27 opposite sides are screwed.
- the Flange part 28 forms an inside with its support part 10 coaxial conical support surface for the ring membrane 12, the ring membrane in the closed state on the Support part 10 rests.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Check Valves (AREA)
Description
- Fig. 1
- ein erstes Ausführungsbeispiel in montiertem Zustand,
- Fig. 2
- das erste Ausführungsbeispiel in demontiertem Zustand,
- Fig. 3
- ein zweites Ausführungsbeispiel in montiertem Zustand,
- Fig. 4
- das zweite Ausführungsbeispiel in demontiertem Zustand und
- Fig. 5
- ein drittes Ausführungsbeispiel im unteren Bereich.
Claims (16)
- Mehrstufige Kreiselpumpe mit die Laufradwelle tragenden Lagern (4) und mit einem den Rückfluß verhindernden Ventil (10-12), wobei das aus der letzten Stufe austretende Fördermedium in einen die Stufen umgebenden Ringraum (13) gedrückt wird, von dem es zum Auslaß hin strömt, dadurch gekennzeichnet, daß das den Rückfluß verhindernde Ventil (10-12) eine in Strömungsrichtung hinter der letzten Pumpstufe im Ringraum koaxial zur Pumpwelle angeordnete konische Ringmembran aufweist, deren dem Saug- und Druckstutzen (6, 7) abgewandte Seite befestigt und deren andere Seite beweglich ist.
- Kreiselpumpe nach Anspruch 1, dadurch gekennzeichnet, daß das Rückflußventil (10-12) in Strömungsrichtung hinter der letzten Pumpenstufe und nahe des Lagers und/oder der Wellendichtung (5) angeordnet ist, das/die den Pumpensaug- und -druckstutzen (6, 7) abgewandt ist.
- Kreiselpumpe nach Anspruch 1, dadurch gekennzeichnet, daß das Rückflußventil (10-12) in Strömungsrichtung hinter der letzten Pumpenstufe und nahe oder in dem Ringraumauslaß, insbesondere nahe der ersten Pumpenstufe angeordnet ist.
- Kreiselpumpe nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß das Rückflußventil (10-12) mit einer Ringmembran (12) eine Kammer (9) umgibt, in die die Pumpe, insbesondere die letzte Pumpenstufe fördert.
- Kreiselpumpe nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß die Stützfläche für die Ringmembran (12) von einem innerhalb der Ringmembran liegenden, außen konisch geformten Stützteil (10) mit Durchströmungsöffnungen (11) gebildet ist.
- Kreiselpumpe nach Anspruch 5, dadurch gekennzeichnet, daß das die Stützflächen bildende Stützteil (10) an dem die Wellendichtung tragenden Bauteil (8) befestigt ist.
- Kreiselpumpe nach Anspruch 5, dadurch gekennzeichnet, daß das die Stützflächen bildende Stützteil (10) mit dem die Wellendichtung tragenden Bauteil (8) einstückig ist.
- Kreiselpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Ringmembran (12) (12) die letzte Pumpenstufe umgibt.
- Kreiselpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß das die Stützflächen bildende Stützteil (10) ein Blechtiefziehteil oder ein Gußteil ist.
- Kreiselpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß eine Pumpenstufe, insbesondere die letzte Pumpenstufe die Stützfläche für die Ringmembran (12) bildet.
- Kreiselpumpe nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß ein den Pumpenkammereinlaß umgebendes Teil (26) die Stützfläche für die Ringmembran (12) bildet.
- Kreiselpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Ringmembran (12) gleichzeitig die Pumpengehäusedichtung zwischen dem den Ringraum umgebenden Zylinder (Gehäusemantel (14)) und dem die Wellendichtung tragenden Gehäuseteil (8) bildet.
- Kreiselpumpe nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß die Ringmembran (12) an einem Flanschteil befestigt ist, an dem auf einer Seite das Ein-/Auslaßgehäuse (27) und auf der anderen Seite der die Ringkammer umgebende Gehäusemantel (14) angrenzt.
- Kreiselpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß im Saug- und Druckstutzen (6,7) je ein von Hand betätigbares Klappenventil (16,17) angeordnet ist.
- Kreiselpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß das Sperrstück insbesondere die Klappe von einer Dichtmanschette (22,23) aus flexiblem Material umgeben ist, die den Stutzen (6,7) zumindest zum Teil auskleidet.
- Kreiselpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Dichtmanschette (22,23) nach außen bis über die Dichtfläche (24,25) des Anschlußflansches geführt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4401658 | 1994-01-21 | ||
DE4401658A DE4401658A1 (de) | 1994-01-21 | 1994-01-21 | Kreiselpumpe mit den Rückfluß verhinderndem Ventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0664398A1 EP0664398A1 (de) | 1995-07-26 |
EP0664398B1 true EP0664398B1 (de) | 1998-07-22 |
Family
ID=6508360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95100590A Expired - Lifetime EP0664398B1 (de) | 1994-01-21 | 1995-01-18 | Kreiselpumpe mit den Rückfluss verhinderndem Ventil |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0664398B1 (de) |
DE (2) | DE4401658A1 (de) |
ES (1) | ES2119237T3 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106438377A (zh) * | 2016-09-29 | 2017-02-22 | 周宁县善长祥农业机械研发有限公司 | 立式多级双阀离心泵及其使用方法 |
CN112253471A (zh) * | 2020-10-26 | 2021-01-22 | 长沙中联泵业股份有限公司 | 一种高温高压多级泵 |
US12078185B2 (en) | 2019-05-29 | 2024-09-03 | Fluid Handling Llc | Bearing-less turbine |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19803162A1 (de) | 1998-01-28 | 1999-07-29 | Wilo Gmbh | Kreiselmotorpumpe mit Absperrklappe |
FR2776342B1 (fr) * | 1998-03-18 | 2001-04-20 | Sarl Cg Promo Star | Pompe centrifuge a amorcage automatique |
DE19851343A1 (de) * | 1998-11-06 | 2000-05-11 | Wilo Gmbh | Kreiselpumpe mit Absperrklappe |
ES1053407Y (es) * | 2002-12-18 | 2003-07-16 | Bogemar Sl | Electrobomba multicelular. |
EP2112380A1 (de) | 2008-04-21 | 2009-10-28 | DP Industries B.V. | Mehrstufige Kreiselpumpe in Inline-Bauart |
WO2014171809A2 (es) * | 2013-04-19 | 2014-10-23 | Bombas Internacionales Mexicanas, S.A De C.V. | Bomba centrífuga vertical en línea multietapas |
EP2916008B1 (de) * | 2014-03-07 | 2020-01-08 | CALPEDA S.p.A. | Verbesserte elektrische pumpe zum pumpen von flüssigkeiten mit festen verunreinigungen |
CN106321448B (zh) * | 2016-09-29 | 2018-06-15 | 周宁县善长祥农业机械研发有限公司 | 多级水泵及其使用方法 |
CN106545496B (zh) * | 2016-09-29 | 2018-11-27 | 周宁县善长祥农业机械研发有限公司 | 卧吸式多级管道泵 |
CN114233635A (zh) * | 2022-02-10 | 2022-03-25 | 浙江水泵总厂有限公司 | 泵体结构及具有其的离心泵 |
CN117967579B (zh) * | 2024-04-01 | 2024-06-11 | 烟台大学 | 一种集液管外置的高压大扬程泵 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2649049A (en) * | 1950-05-04 | 1953-08-18 | Mono Products Inc | Fluid-shielded dynamoelectric device for immersed pumps and the like |
DE1824921U (de) * | 1960-11-23 | 1961-01-12 | Ferch & Nabben | Vorrichtung zum verhindern der ruecksaugung von fluessigkeiten in rohrleitungen. |
DE1528791A1 (de) * | 1963-04-19 | 1969-10-30 | Pomorska Odlewnia I Emaliernia | Rueckschlagventil fuer Tiefbrunnenpumpen |
US3664759A (en) * | 1970-09-16 | 1972-05-23 | Worthington Corp | Self-adjusting backflow preventor for centrifugal pumps |
US4244675A (en) * | 1979-04-30 | 1981-01-13 | Worthington Pump, Inc. | Multi-stage barrel type centrifugal pump with resilient compensator means for maintaining the seals between interstage pumping assemblies |
DE8334283U1 (de) * | 1983-11-30 | 1984-03-01 | Klein, Schanzlin & Becker Ag, 6710 Frankenthal | Rueckschlagventil |
US4565214A (en) * | 1984-06-04 | 1986-01-21 | Dover Corporation | Flapper check valve assembly |
ES8706248A1 (es) * | 1985-01-18 | 1987-05-16 | Andren Christopher Erik | Valvula automatica de fluido |
DE8612405U1 (de) * | 1986-05-05 | 1986-07-31 | Guss- Und Armaturwerk Kaiserslautern Nachf. Karl Billand, 6750 Kaiserslautern | Vorrichtung zur Verbindung der Druckleitung einer Pumpe in einer Abwasser-Hebeanlage mit einer pumpenseitigen Rohrleitung |
DE3729673A1 (de) * | 1987-09-04 | 1989-03-23 | Grundfos Int | Mehrstufige kreiselpumpe |
FR2637024B1 (fr) * | 1988-09-23 | 1994-04-01 | Olaer Industries | Installation de pompage, en particulier pour irrigation |
FR2661218B1 (fr) * | 1990-04-24 | 1992-07-31 | Salmson Pompes | Ensemble de pompe centrifuge verticale. |
DE9310091U1 (de) * | 1993-07-07 | 1993-09-23 | J. Hartlage GmbH & Co. KG, 49090 Osnabrück | Vertikale kreiselpumpe |
-
1994
- 1994-01-21 DE DE4401658A patent/DE4401658A1/de not_active Withdrawn
-
1995
- 1995-01-18 EP EP95100590A patent/EP0664398B1/de not_active Expired - Lifetime
- 1995-01-18 ES ES95100590T patent/ES2119237T3/es not_active Expired - Lifetime
- 1995-01-18 DE DE59502855T patent/DE59502855D1/de not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106438377A (zh) * | 2016-09-29 | 2017-02-22 | 周宁县善长祥农业机械研发有限公司 | 立式多级双阀离心泵及其使用方法 |
US12078185B2 (en) | 2019-05-29 | 2024-09-03 | Fluid Handling Llc | Bearing-less turbine |
CN112253471A (zh) * | 2020-10-26 | 2021-01-22 | 长沙中联泵业股份有限公司 | 一种高温高压多级泵 |
Also Published As
Publication number | Publication date |
---|---|
EP0664398A1 (de) | 1995-07-26 |
DE59502855D1 (de) | 1998-08-27 |
ES2119237T3 (es) | 1998-10-01 |
DE4401658A1 (de) | 1995-07-27 |
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