EP0623750B1 - Pompe du type à écoulement axial - Google Patents
Pompe du type à écoulement axial Download PDFInfo
- Publication number
- EP0623750B1 EP0623750B1 EP94106634A EP94106634A EP0623750B1 EP 0623750 B1 EP0623750 B1 EP 0623750B1 EP 94106634 A EP94106634 A EP 94106634A EP 94106634 A EP94106634 A EP 94106634A EP 0623750 B1 EP0623750 B1 EP 0623750B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- edges
- onflow
- rotor
- centrifugal pump
- inner casing
- 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
- F04D3/00—Axial-flow pumps
- F04D3/005—Axial-flow pumps with a conventional single stage rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/548—Specially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
Definitions
- the invention relates to a centrifugal pump of the axial type Conveying liquids containing fibrous components, with a plurality of downstream one Impeller arranged, between an outer casing and an inner casing extending guide vanes, within the Inner housing for the impeller drive elements are arranged, the guide vanes with their leading edges in the direction of flow are inclined forward and between the impeller and the leading edges a stripping and / or cutting device is arranged.
- a centrifugal pump according to EPA 0 475 920 is limited to a motor pump unit, d. H. the guide vanes serve here at the same time to hold a motor housing.
- the design corresponds to the generally known one Axial pump design with a downstream of the impeller Guide vanes having housing part.
- To get through constipation Avoiding fibrous components are the leading edges of the Guide vanes tilted backwards when viewed in the direction of flow. This is to avoid that in wastewater production admixtures in the water are as far as possible caught on the guide vanes away from the impeller.
- GB-A-386 626 shows a generic solution use a blade design, in which between the Leading edges of the guide vanes and the trailing edges of the Barrels a gap of only one millimeter in width remains. The blades thus form one over the entire blade length cutting device. A such cutting device is very prone to failure and can larger or harder objects to block or break a shovel.
- the invention is therefore based on the problem for generic Centrifugal pumps to develop a solution with their help a trouble-free operation when conveying fibrous components containing media is guaranteed.
- the solution this problem occurs according to the features of claim 1.
- claims 2 and 3 describe the Inclination of the leading edges on guide vanes that are not in pure radial direction. Their inclination improves the hydraulic efficiency of the pump.
- the guide vanes are partial only attached to the outer housing.
- the guide vanes are partial only attached to the outer housing.
- the scraper and / or attached to the impeller hub Cutting device is formed by cams.
- the centrifugal pump shown in Fig. 1 has an axial type an outer housing 1, within which an inner housing 2 by means of Guide blades 3 is held.
- the inner housing 2 does not take here Drive elements further shown, of which the impeller 4th is driven.
- the drive elements can be a Shaft with bearings, a drive motor driving the impeller or act similar drive elements.
- a scraper or a cutting device 5 Seen in the flow direction behind the impeller 4 is a scraper or a cutting device 5 is attached. This can be placed directly on the hub of the impeller or part one connected to and driven by the hub Component.
- the stripping and / or cutting device 5 is in one Arranged hub area, which lies opposite the inner housing 2.
- the leading edges 6 also begin in this area the guide vanes 3.
- the stripping device used here are at the flow end of the hub 7 several cams attached, with which on the leading edge 6 in the area of the inner housing 2 accumulating fiber parts removable are.
- a wiping, Cutting device or a combination of both uses Find.
- FIG. 2 shows a view according to arrow X of FIG. 1.
- accumulated fibers 8 are the passing by Cutting or stripping device passed into the stator channels 9 and washed away.
- the dashed arrow corresponds to the direction of rotation of the impeller, not shown here.
- the guide vanes 3 are here - starting from the attachment point on the inner housing 2 - inclined in the circumferential direction against the direction of rotation of the impeller.
- the pumped medium emerging from the impeller 2 supports the fibers slide along the leading edges Cutting or stripping device.
- stator blades that are in extend in the radial direction between the outer and inner housing.
- FIG. 3 Another embodiment is shown in FIG. 3.
- a total of six guide vanes 3.1, 3.2 are used, whereby only every other guide vane 3.2 the inner housing 2 with the Outer housing 1 connects.
- the other guide vanes 3.1 are only attached to the outer housing 1. Fibers sliding along it can then in the gap 10 between the inner housing 2 and guide vanes 3.1 slide off the guide vanes and flow away with the flow.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Claims (5)
- Pompe centrifuge du type à écoulement axial pour le transport de fluides contenant des composants fibreux, comportant une pluralité d'aubes directrices (3) disposées, dans le sens de l'écoulement, derrière une roue mobile (4), et s'étendant entre un logement externe (1) et un logement interne (2), des éléments d'entraínement étant disposés à l'intérieur du logement interne (2) pour la roue mobile (4), les aubes directrices (3) étant inclinées avec leurs arêtes d'attaque (6) vers l'avant dans le sens de l'écoulement, caractérisée en ce qu'entre la roue mobile (4) et les arêtes d'attaque (6), et à une certaine distance axiale de la roue mobile est disposé un dispositif de raclage et/ou de coupe (5) sur le moyeu (7) de la roue mobile en face du logement interne (2), les composants fibreux adhérant aux arêtes d'attaque (6) des aubes directrices (3), qui glissent le long de celles-ci vers le logement interne (2), étant éloignés dans la zone du logement interne (2) depuis les arêtes d'attaque (6) des aubes directrices (3) par le dispositif de raclage et/ou de coupe (5) disposé seulement dans la zone du moyeu.
- Pompe centrifuge selon la revendication 1, caractérisée en ce que les arêtes d'attaque (6) sont inclinées dans la direction de la périphérie à l'encontre du sens de rotation de la roue mobile (4).
- Pompe centrifuge selon la revendication 1, caractérisée en ce que les arêtes d'attaque sont inclinées vers l'avant dans le contour méridien à l'encontre du sens d'écoulement.
- Pompe centrifuge selon les revendications 1 à 3, caractérisée en ce que les aubes directrices (3.1) sont fixées partiellement uniquement au logement externe (1).
- Pompe centrifuge selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les saillies montées sur le moyeu forment le dispositif de raclage et/ou de coupe (5).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4314477A DE4314477A1 (de) | 1993-05-03 | 1993-05-03 | Kreiselpumpe axialer Bauart |
DE4314477 | 1993-05-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0623750A1 EP0623750A1 (fr) | 1994-11-09 |
EP0623750B1 true EP0623750B1 (fr) | 1998-07-29 |
Family
ID=6486974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94106634A Expired - Lifetime EP0623750B1 (fr) | 1993-05-03 | 1994-04-28 | Pompe du type à écoulement axial |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0623750B1 (fr) |
DE (2) | DE4314477A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19510811A1 (de) * | 1995-03-24 | 1996-09-26 | Klein Schanzlin & Becker Ag | Faser abweisende Wandflächengestaltung |
JP3137991B2 (ja) * | 1997-10-09 | 2001-02-26 | 株式会社石垣 | ウォータージェット推進装置の閉塞防止装置 |
US8124019B2 (en) * | 2009-08-21 | 2012-02-28 | Exxonmobil Chemical Patents Inc. | Clog-resistant pump assembly for slurry loop reactor |
NL2003467C2 (nl) * | 2009-09-10 | 2011-03-14 | Nijhuis Pompen B V | Visvriendelijke pomp- of turbineinrichting. |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE501662C (de) * | 1930-07-05 | Koester Friedrich | Schrauben- oder Propellerpumpe | |
DE459798C (de) * | 1928-05-14 | Koester Friedrich | Leitapparat fuer Schraubenpumpen | |
DE500266C (de) * | 1930-06-23 | Koester Friedrich | Propeller, der in einem Gehaeuse arbeitet | |
FR386626A (fr) * | 1907-03-16 | 1908-06-18 | Ernst Steffen | Procédé pour la préparation d'une boisson maltée contenant peu d'alcool, mousseuse et ne fermentant pas |
DE547239C (de) * | 1930-02-16 | 1932-03-30 | Carl Pape | Anordnung von Farbfiltern fuer naturfarbig wirkende Kinofilme |
US3170646A (en) * | 1963-01-04 | 1965-02-23 | Frederick H Springer | Portable pump |
SE384070B (sv) * | 1974-07-23 | 1976-04-12 | Stenberg Flygt Ab | Propellerpump |
US4063849A (en) * | 1975-02-12 | 1977-12-20 | Modianos Doan D | Non-clogging, centrifugal, coaxial discharge pump |
SU798359A1 (ru) * | 1978-12-08 | 1981-01-23 | Латвийский Научно-Исследовательскийинститут Механизации И Электрифика-Ции Сельского Хозяйства | Центробежный насос дл перекачи-ВАНи НЕОдНОРОдНыХ СРЕд C ВОлОК-НиСТыМи ВКлючЕНи Ми |
SU1317183A1 (ru) * | 1985-07-17 | 1987-06-15 | Карагандинское Производственное Объединение По Добыче Угля "Карагандауголь" | Насос дл перекачивани неоднородных сред |
DE3608229A1 (de) * | 1986-03-12 | 1987-09-17 | Klein Schanzlin & Becker Ag | Laufschaufel fuer eine axialkreiselpumpe |
SU1488594A1 (ru) * | 1986-10-02 | 1989-06-23 | Vnii Mekh Selskogo Khoz | Цehtpoбeжhый hacoc для пepekaчиbahия heoдhopoдhыx cpeд c boлokhиctыmи bkлючehияmи |
FR2628484A1 (fr) * | 1988-03-09 | 1989-09-15 | Borreguero Raphael | Turbine hydraulique pour la propulsion et le pompage, assurant une fonction de broyage |
SE466767B (sv) * | 1990-04-02 | 1992-03-30 | Flygt Ab Itt | Igensaettningsfri pump |
SE466768B (sv) * | 1990-09-12 | 1992-03-30 | Flygt Ab Itt | Igensaettningsfri pump av axialtyp |
-
1993
- 1993-05-03 DE DE4314477A patent/DE4314477A1/de not_active Withdrawn
-
1994
- 1994-04-28 EP EP94106634A patent/EP0623750B1/fr not_active Expired - Lifetime
- 1994-04-28 DE DE59406531T patent/DE59406531D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE4314477A1 (de) | 1994-11-10 |
DE59406531D1 (de) | 1998-09-03 |
EP0623750A1 (fr) | 1994-11-09 |
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