EP1978261B1 - Pump unit - Google Patents
Pump unit Download PDFInfo
- Publication number
- EP1978261B1 EP1978261B1 EP08290249.5A EP08290249A EP1978261B1 EP 1978261 B1 EP1978261 B1 EP 1978261B1 EP 08290249 A EP08290249 A EP 08290249A EP 1978261 B1 EP1978261 B1 EP 1978261B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump unit
- wall
- edge
- pump
- external wall
- 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.)
- Active
Links
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 6
- 238000005086 pumping Methods 0.000 description 4
- 239000010866 blackwater Substances 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000007872 degassing Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000725 suspension 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
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2288—Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating
-
- 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
-
- 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
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
- F04D7/045—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous with means for comminuting, mixing stirring or otherwise treating
Description
La présente invention se rapporte aux groupes motopompes et, plus particulièrement, à ceux permettant d'aspirer les flottants, notamment pour le pompage des eaux noires ou eaux-vannes. On appelle eaux noires ou eaux-vannes des eaux usées comportant des rejets d'eau de toilette.The present invention relates to pump units and, more particularly, to those for sucking the floats, especially for pumping black water or black water. Black water or sewage is wastewater containing waste water.
On connaît déjà un groupe motopompe de ce genre ayant un axe vertical. Il a en bas un fond d'aspiration. La paroi intérieure du fond d'aspiration délimite une ouïe d'aspiration. La paroi extérieure du fond d'aspiration délimite une zone d'alimentation. Une première partie du bord inférieur libre de la paroi extérieure est à un niveau plus bas que le bord inférieur libre de la paroi intérieure. Pour faciliter le pompage des flottants, mousse et autres graisses qui restent en surface d'une suspension à pomper, il est déjà connu d'incliner un groupe motopompe de ce type. Pour l'incliner, il est prévu un pied d'assise à griffe d'adaptation inclinée. La griffe d'un pied d'assise de ce genre est plus lourde qu'une griffe normale et surtout plus difficile à fabriquer. On peut aussi prévoir pour l'inclinaison que le pied d'assise ait une face d'appui inclinée, mais on perd alors la possibilité de monter le groupe motopompe verticalement, avec les avantages de symétrie d'aspiration et d'aspiration plus bas dans le puisard.There is already known a pump unit of this kind having a vertical axis. It has a bottom of suction. The inner wall of the suction bottom delimits a suction inlet. The outer wall of the suction bottom defines a feeding zone. A first portion of the free bottom edge of the outer wall is at a lower level than the free bottom edge of the inner wall. To facilitate the pumping of floating, foam and other grease that remain on the surface of a suspension to be pumped, it is already known to tilt a pump unit of this type. To incline it is provided an inclined fitting claw foot. The claw of a foot of this kind is heavier than a normal claw and especially difficult to manufacture. It can also be provided for the inclination that the foot has an inclined bearing face, but then loses the possibility of mounting the pump unit vertically, with the advantages of suction and suction symmetry lower in the sump.
Au
L'invention vise un groupe motopompe du type mentionné ci-dessus, dans lequel on conserve, pour la plus grande partie du fonctionnement de la pompe, la symétrie d'aspiration, tout en ayant un niveau d'aspiration dans le puisard aussi bas que possible, mais sans pour autant avoir besoin d'un agencement compliqué et coûteux.The invention relates to a motor pump unit of the type mentioned above, in which the suction symmetry is kept for the greater part of the operation of the pump, while having a suction level in the sump as low as possible, but without needing a complicated and expensive arrangement.
Suivant l'invention le bord inférieur d'une deuxième partie de la paroi extérieure est à un niveau supérieur au bord inférieur de la paroi intérieure.According to the invention the lower edge of a second portion of the outer wall is at a higher level than the lower edge of the inner wall.
On n'a plus besoin ainsi d'incliner le groupe motopompe. Lorsque le niveau du liquide dans le puisard devient juste inférieur au niveau du bord inférieur libre de la paroi extérieure, le liquide mais surtout les flottants sont aspirés par la partie de l'ouïe d'aspiration délimitée par la deuxième partie de la paroi extérieure, tandis que le reste de l'ouïe d'aspiration continue à aspirer normalement le liquide. On continue à pomper du liquide, ce qui contribue à entraîner les flottants dans la pompe. Après que le puisard a été vidé et qu'il commence à se remplir, l'agencement suivant l'invention permet de dégazer la zone d'alimentation et de ne pas emprisonner de l'air dans l'ouïe d'aspiration. La pompe est ainsi facile à réamorcer.There is no longer any need to tilt the pump set. When the level of the liquid in the sump becomes just below the level of the free lower edge of the outer wall, the liquid but especially the floats are sucked by the portion of the suction inlet delimited by the second portion of the outer wall, while the remainder of the suction inlet continues to suck the liquid normally. Liquid continues to pump, which helps to drive the floats into the pump. After the sump has been emptied and begins to fill, the arrangement according to the invention allows degassing the feed zone and does not trap air in the suction inlet. The pump is thus easy to reprimand.
De préférence, la deuxième partie de la paroi extérieure est inclinée par rapport à l'axe. Cela permet d'obtenir un gradient de vitesse plus progressif pour le pompage des flottants. L'angle d'inclinaison est compris de préférence entre 30° et 60°.Preferably, the second portion of the outer wall is inclined with respect to the axis. This makes it possible to obtain a more gradual gradient of speed for the pumping of the floats. The angle of inclination is preferably between 30 ° and 60 °.
De préférence, la deuxième partie a une longueur périphérique représentant de 10 à 40 % de la somme des longueurs périphériques de la première partie et de la deuxième partie du bord inférieur libre. On préfère tout particulièrement que ce pourcentage soit d'environ 25 à 35 %.Preferably, the second portion has a peripheral length of 10 to 40% of the sum of the peripheral lengths of the first portion and the second portion of the free lower edge. It is most preferred that this percentage be about 25 to 35%.
On préfère en outre que la deuxième partie se trouve du côté du groupe opposé à celui où se trouve la tubulure de refoulement du groupe motopompe. Le pompage des flottants est ainsi facilité, car il n'est pas gêné par la tubulure de refoulement et le pied d'assise si l'en existe un.It is furthermore preferred that the second part is on the side of the group opposite to that where the discharge pipe of the pump set is located. The pumping of the floats is thus facilitated because it is not impeded by the discharge pipe and the foot of the seat if there is one.
C'est en effet aussi un avantage de la présente invention que de permettre d'obtenir l'élimination des flottants sans que la pompe soit sur un pied d'assise. On peut obtenir cette élimination même lorsque la pompe est munie de moyens de montage sur trépied.It is indeed also an advantage of the present invention to allow to obtain the elimination of floating without the pump is on a footing. This elimination can be achieved even when the pump is equipped with tripod mounting means.
Au
Aux dessins annexés, donnés uniquement à titre d'exemple :
- la
figure 1 est une vue en coupe d'un groupe motopompe suivant l'invention, tandis que - la
figure 2 en est une vue partielle en plan par en dessous.
- the
figure 1 is a sectional view of a pump unit according to the invention, while - the
figure 2 is a partial plan view from below.
Le groupe motopompe représenté à la
Le liquide aspiré par l'ouïe d'aspiration est refoulé par une tubulure 16 de refoulement. Le groupe est porté sur un trépied 17.The liquid sucked by the suction port is discharged by a
La deuxième partie 15 se trouve du côté du groupe opposé à celui où se trouve la tubulure 16 de refoulement.The
On monte le groupe en mettant son axe verticalement. Un groupe suivant l'invention est apte à pomper efficacement les flottants sans qu'il soit nécessaire de l'incliner.We mount the group by putting its axis vertically. A group according to the invention is able to efficiently pump the floats without the need to tilt.
Claims (6)
- Pump unit having a vertical axis (1) comprising means for mounting it on a base foot or on tripod (17), having below an aspiration bottom (5) whose vertical, ring shaped, internal wall (7) is delimiting an aspiration gill (9) and whose edge of vertical, ring shaped, external wall (6) is delimiting a supply zone (10), a first portion (11) of the lower free edge (12) of said external wall (6) being at a lower level than the lower free edge (13) of the internal wall (7), characterized in that the lower edge of a second portion (15) of the external wall (6) is at a level which is higher than said lower edge (13) of said internal wall (7) .
- Pump unit as defined in claim 1, characterized in that the second portion of the external wall is inclined in respect of said axis.
- Pump unit as defined in claim 2, characterized in that the angle of inclination is comprised between 30° and 60°.
- Pump unit as defined in claim 1, 2 or 3, having a pressure pipeline (16), characterized in that the second portion (15) is on the side of the unit which is opposite to the side where said pressure pipeline (16) is.
- Pump unit as defined in one of the preceding claims, characterized in that the second portion has a peripheral length representing from 10 to 40% of the sum of the peripheral lengths of the first and second portions.
- Aspiration method of the floatings in a tank, characterized in that it comprises placing a pump unit as defined in one of the preceding claims in the tank and making it operating therein.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08290249T PL1978261T3 (en) | 2007-04-06 | 2008-03-14 | Pump unit |
SI200831913T SI1978261T1 (en) | 2007-04-06 | 2008-03-14 | Pump unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0702531A FR2914704B1 (en) | 2007-04-06 | 2007-04-06 | MOTOPOMPE GROUP EXTRACTING THE FLOATS. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1978261A1 EP1978261A1 (en) | 2008-10-08 |
EP1978261B1 true EP1978261B1 (en) | 2017-10-25 |
Family
ID=38796171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08290249.5A Active EP1978261B1 (en) | 2007-04-06 | 2008-03-14 | Pump unit |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1978261B1 (en) |
DK (1) | DK1978261T3 (en) |
ES (1) | ES2655244T3 (en) |
FR (1) | FR2914704B1 (en) |
HU (1) | HUE035403T2 (en) |
PL (1) | PL1978261T3 (en) |
PT (1) | PT1978261T (en) |
SI (1) | SI1978261T1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2594184B1 (en) * | 1986-02-07 | 1989-10-27 | Valeo | LIQUID PUMP, ESPECIALLY WATER PUMP FOR MOTOR VEHICLE |
DE3813654A1 (en) * | 1988-04-22 | 1989-11-02 | Licentia Gmbh | Circulation pump |
JP2872413B2 (en) * | 1990-12-26 | 1999-03-17 | アスモ株式会社 | Washer pump |
DE4119131A1 (en) * | 1991-06-11 | 1992-12-17 | Kloeckner Humboldt Deutz Ag | Casing for rotary pump - has leakage channel set into swirl vane to drain off fluid |
US6533543B2 (en) * | 2000-02-02 | 2003-03-18 | Ebara Corporation | Vortex prevention apparatus in pump |
-
2007
- 2007-04-06 FR FR0702531A patent/FR2914704B1/en active Active
-
2008
- 2008-03-14 PL PL08290249T patent/PL1978261T3/en unknown
- 2008-03-14 EP EP08290249.5A patent/EP1978261B1/en active Active
- 2008-03-14 PT PT82902495T patent/PT1978261T/en unknown
- 2008-03-14 DK DK08290249.5T patent/DK1978261T3/en active
- 2008-03-14 ES ES08290249.5T patent/ES2655244T3/en active Active
- 2008-03-14 HU HUE08290249A patent/HUE035403T2/en unknown
- 2008-03-14 SI SI200831913T patent/SI1978261T1/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
FR2914704B1 (en) | 2009-05-22 |
EP1978261A1 (en) | 2008-10-08 |
FR2914704A1 (en) | 2008-10-10 |
SI1978261T1 (en) | 2018-04-30 |
ES2655244T3 (en) | 2018-02-19 |
HUE035403T2 (en) | 2018-05-02 |
PL1978261T3 (en) | 2018-05-30 |
DK1978261T3 (en) | 2018-01-29 |
PT1978261T (en) | 2018-01-30 |
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