EP2458225A1 - Plaque de recouvrement pour une pompe de roue centrifuge à vis et pompe de roue centrifuge à vis comprenant une telle plaque de recouvrement - Google Patents

Plaque de recouvrement pour une pompe de roue centrifuge à vis et pompe de roue centrifuge à vis comprenant une telle plaque de recouvrement Download PDF

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Publication number
EP2458225A1
EP2458225A1 EP10192467A EP10192467A EP2458225A1 EP 2458225 A1 EP2458225 A1 EP 2458225A1 EP 10192467 A EP10192467 A EP 10192467A EP 10192467 A EP10192467 A EP 10192467A EP 2458225 A1 EP2458225 A1 EP 2458225A1
Authority
EP
European Patent Office
Prior art keywords
cover plate
opening
recess
schraubenzentrifugalrad
front side
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Withdrawn
Application number
EP10192467A
Other languages
German (de)
English (en)
Inventor
Carl STÄHLE
Ciro Robles
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Frideco AG
Original Assignee
Frideco AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Frideco AG filed Critical Frideco AG
Priority to EP10192467A priority Critical patent/EP2458225A1/fr
Priority to EP17152843.3A priority patent/EP3179112B1/fr
Priority to PCT/EP2011/070995 priority patent/WO2012069618A1/fr
Priority to US13/989,086 priority patent/US9709071B2/en
Priority to DK11799082.0T priority patent/DK2643596T3/en
Priority to US13/989,083 priority patent/US9879695B2/en
Priority to DK17152843.3T priority patent/DK3179112T3/da
Priority to JP2013540375A priority patent/JP5988106B2/ja
Priority to DK11796936.0T priority patent/DK2643595T3/en
Priority to RU2013128547/06A priority patent/RU2566865C2/ru
Priority to CN201180056678.6A priority patent/CN103299085B/zh
Priority to EP11799082.0A priority patent/EP2643596B1/fr
Priority to RU2013128532/06A priority patent/RU2559958C2/ru
Priority to PCT/EP2011/070996 priority patent/WO2012069619A1/fr
Priority to CN201180056681.8A priority patent/CN103339386B/zh
Priority to JP2013540376A priority patent/JP6028162B2/ja
Priority to EP11796936.0A priority patent/EP2643595B1/fr
Publication of EP2458225A1 publication Critical patent/EP2458225A1/fr
Withdrawn legal-status Critical Current

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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
    • F04D29/40—Casings; Connections of working fluid
    • 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
    • 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
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/15—Two-dimensional spiral

Definitions

  • the invention relates to a cover plate for a fferenzentrifugalradpumpe, a fferenzentrifugalradpumpe comprising such a cover plate and a method for cleaning a fferenzentrifugalradpumpe comprising such a cover plate.
  • the document CH 662 864 discloses a fferenzentrifugalradpumpe, wherein the fferenzentrifugalrad is rotatably mounted on a rotational axis.
  • the fferenzentrifugalradpumpe has in the region of the connection between ringenzentrifugalrad and axis of rotation on a cavity.
  • This per se very well-proven embodiment of a screw centrifugal pump has the disadvantage that Within the cavity impurities can accumulate and accumulate. This results in increased wear and / or increased maintenance.
  • This object is achieved with a cover plate for a fferenzentrifugalradpumpe comprising the features of claim 1.
  • the dependent claims 2 to 10 relate to further advantageous embodiments.
  • the object is further achieved with a fferenzentrifugalradpumpe having the features of claim 11.
  • the claims 12 and 13 relate to further advantageous embodiments.
  • the object is further achieved by a method for self-cleaning a fferenzentrifugalradpumpe having the features of claim 14.
  • the claim 15 relates to a further, advantageous method step.
  • a cover plate for a screw centrifugal pump wherein the cover plate has a front side and a rear side, and wherein the front side has a preferably frusto-conical extending part surface whose course is configured adapted to the back of a fferenzentrifugalrades, wherein the Partial surface in the center thereof has a central opening, wherein the central opening extends in the direction of an axis, and wherein the cover plate has at least one aperture which is arranged in the region of the partial surface and spaced from the central opening, and wherein the aperture fluid-communicating connection between the front and the Forms back of the cover plate.
  • a fferzentrifugalradpumpe having the inventive cover plate has the advantage that forms during the pumping operation, a partial flow, which flows from the front to the back of the cover plate and then along a center opening of the cover plate flows back to the front of the cover plate, so that forms a cleaning stream, the is able to at least partially back into the cavity behind the cover plate or accumulated impurities to promote the front of the cover plate, so that these impurities can be conveyed away via the main flow of fferenzentrifugalradpumpe.
  • the screw centrifugal pump comprises a rotatably mounted screw centrifugal wheel and a cover plate arranged directly next to the screw centrifugal wheel with a central opening, wherein a hub or a drive shaft of the screw centrifugal wheel preferably extends through the central opening. Between the center opening and the hub or the drive shaft, a fluid-conducting gap is formed.
  • the cover plate preferably runs on the side facing the screw centrifugal wheel or the partial surface facing the screw centrifugal wheel, so that the partial surface is preferably frusto-conical or planar, wherein the partial surface could also have a different shape, for example a curved or polygonal course.
  • FIG. 1 shows a known from the prior art, in the document CH 662 864 disclosed embodiment of a synchronenzentrifugalradpumpe.
  • FIG. 1 shows an axial section through the sortedenzentrifugalradpumpe comprising a fferenzentrifugalrad with a hub 21 and a Schaufelzentrifugalrad 25, comprising a drive shaft 33 which is fixedly connected to the hub 21, and comprising a disposed behind the SSenzentrifugalrad 25 housing rear wall 23, and the SSenzentrifugalrad 25 in the circumferential direction surrounding housing outer wall 3.
  • an outlet opening 36 is provided in the housing rear wall 23 so that gases can escape, which are carried in the fluid and excrete against the Laufradrotations scholar and pass through the impeller rear gap between the impeller hub 21 and rear wall 23 in the interior 37.
  • the gap between the impeller hub 21 and the housing rear wall 23 is formed as a labyrinth, wherein both the hub-side and the rear wall-side labyrinth structure is interrupted by a transverse groove 38, so that a self-cleaning effect and no conveyed solids in the interior 37 and the outlet opening 36th reach.
  • FIG. 2 1 shows a longitudinal section of an exemplary embodiment of a screw centrifugal wheel pump 1 according to the invention.
  • the screw centrifugal wheel pump 1 comprises a pump housing 3 with inlet opening 3a, outlet 3b and housing interior 3c, and furthermore comprises a hub 21 which is connected to a blade centrifugal wheel 25 shown only diagrammatically and dashed, and which is rotatably mounted about a rotatable about an axis A drive shaft 33.
  • the connection between the drive shaft 33 and the hub 21 is shown only schematically.
  • the Schaufelzentrifugalrad 25 and the hub 21 could also, as in FIG. 1 represented as a single, shared part be designed.
  • the ringenzentrifugalradpumpe 1 also includes a conical inner housing 4 with inlet opening 4a and a Abstandhaltering 5.
  • the fferenzentrifugalradpumpe 1 also comprises a housing rear wall 23 with an outlet opening 36 and a seal 6.
  • the outlet opening 36 is used for maintenance purposes and is usually closed during operation of the fferenzentrifugalradpumpe 1 with a plug from the outside.
  • a main flow F is generated which leads to the outlet 3b via the inlet opening 3a.
  • the conveyed mainstream F comprises a fluid, preferably water and possibly gases such as water vapor, the helical centrifugal pump 1 is used in a preferred use for conveying polluted water, so that the main flow F may also include solids, such as feces, sand, gravel, textiles, Fibers, plastic parts etc.
  • the fferenzentrifugalradpumpe 1 also includes a cover plate 2, which is arranged in the direction of the axis A directly behind the hub 21 and the sortedenzentrifugalrades 25.
  • the cover plate 2 has a front side 2h and a rear side 2i, wherein the front side 2h in the illustrated embodiment comprises a substantially frusto-conical extending part surface 2k whose course of the back is adapted to a fferenzentrifugalrad 25, wherein the partial surface 2k in the center of a center opening 2g wherein the center opening 2g extends parallel in the direction of the axis A.
  • the hub 21 extends through the central opening 2g, so that between the center opening 2g and the hub 21, a gap 2b extending in the direction of the axis A is formed.
  • the hub 21 also has a projection which partially covers the partial surface 2k, so that between the hub 21 and the partial surface 2k forms a transverse to the axis A transverse gap 2e.
  • the cover plate 2 has at least one opening 2a, which is arranged at a distance from the center opening 2k in the area of the partial surface 2k, wherein the opening 2a forms a fluid-conducting connection between the front side 2h and the rear side 2i of the cover plate 2.
  • the fluid in the region of the opening 2a has a higher pressure than in the region of the center opening 2g, whereby a partial flow F1 is generated by a part of the main flow F as a partial flow F1 flows through the opening 2a to the back 2i of the cover plate 2, and then flows through the gap 2b and optionally the column 2e back into the main flow F.
  • This partial flow F1 causes contaminants, which are located in the interior 37, are conveyed out of this and the skin flow F are supplied.
  • the hub 21 could also be designed without a projection, so that no transverse gap 2e is formed.
  • the hub 21 could also be spaced with respect to the sub-surface 2k such that no transverse gap 2e is formed.
  • the drive shaft 33 could also be further advanced, so that the gap 2 b is formed at least partially or exclusively between the cover plate 2 and the drive shaft 33.
  • the cover plate 2 has at least one opening 2a and preferably at least two openings 2a.
  • the openings 2a are arranged symmetrically with respect to the axis A in the partial surface 2k.
  • the apertures 2a may be in a variety of ways be designed. In the FIG. 2 shown below opening 2a is in FIG. 3 shown enlarged.
  • the opening 2 comprises an inlet opening 21 whose cross-section forms an entry surface 2m.
  • the partial flow F1 flows through the opening 2a to the rear side 2i of the cover plate 2.
  • FIG. 4 shows a further embodiment of an opening 2a. Unlike the in FIG. 3
  • the embodiment shown in FIG. 4 represented opening 2a arranged such that the partial flow F1 undergoes a partial flow reversal with respect to the occurring at the front side 2h of the cover plate 2 flow F2.
  • the aperture 2a extending in this way has the advantage that solids can pass through the aperture 2a to the back 2i of the cover plate 2 less effectively.
  • FIG. 2 The opening 2a shown above is in FIG. 5 shown enlarged.
  • a recess 2c is arranged, which opens to the opening 2a, wherein the opening 2a forms an inlet opening 21 with inlet surface 2m, so that the inlet opening 21 is arranged in the recess 2c.
  • the inlet opening 21 or the inlet surface 2m can be arranged in various ways, but advantageously as in FIG. 5 represented such that the partial flow F1 undergoes an at least partial flow reversal with respect to the occurring at the front side 2h of the cover plate 2 flow F2.
  • the inlet opening 21 arranged in this way has the advantage that solids pass through the opening 2a to the back 2i of the cover plate 2 less effectively can.
  • the entrance surface 2m is arranged in an advantageous embodiment such that it is parallel or substantially parallel to the axis A. In FIG. 5 is not the axis A per se, but the course of the axis A is shown. As in FIG. 5 illustrated, the entrance surface 2m is arranged in a further advantageous embodiment such that it is perpendicular or substantially perpendicular to the rotational direction R of the drive shaft 33, wherein the entrance surface 2m facing away from the direction of rotation R is arranged.
  • FIGS. 6, 7 and 8th show an embodiment of a cover plate 2 in plan view, in perspective view and in a section along the section line BB.
  • the recess 2c, as in the FIGS. 6 and 7 are at least partially formed by a substantially perpendicular or perpendicular to the axis A extending bore.
  • FIG. 6 shows the course of the axis A and the preferred direction of rotation R. Off FIG. 6 is thus seen that the entrance surface 2m is parallel to the axis A and perpendicular to the direction of rotation R.
  • FIG. 8 shows in section the cover plate 2 with front 2h, back 2i and center opening 2g.
  • the openings 2a are arranged, wherein the openings 2a are always arranged at a distance from the central opening 2g.
  • the openings 2a could also, as in FIG. 3 shown, perpendicular or substantially perpendicular with respect to the partial surface 2k run, or as in FIG. 4 shown, transverse to the part surface 2k run.
  • the cover plate 2 as in the FIGS. 6 to 8 illustrated, a recess extending in the circumferential direction, in particular a spiral-shaped recess 2d, which advantageously extends in the region of the central opening 2g along the partial surface 2h to the outside.
  • the depression 2d extends as in FIG FIG. 6 shown in the direction of rotation R spiral from inside to outside.
  • the hub 21 rotating in the direction of rotation R over the part surface 2k or the screw centrifugal wheel 25 rotating in the direction of rotation R helps to move the dirt in the direction of rotation R in the depression 2d or on the part surface 2k and to move it towards the outside with respect to the part surface 2k the pollution reaches the skin stream F, and is detected by this and carried away.
  • an arrangement of the aperture 2a is particularly advantageous as in the FIGS. 6 to 8 shown. In particular from FIG.
  • the contamination is moved substantially in the direction of rotation R, wherein the aperture 2a is arranged in a recess 2c and the inlet surface 2m facing away from the direction of rotation R is aligned so that dirt, even if they flow over the recess 2c, due to Flow conditions and the direction of movement of the contaminants hardly or not at all flow through the opening 2a but the main stream F are supplied.
  • the cover plate 2 can, as in the FIGS. 7 and 8th shown, in addition, a running along the edge region recesses 2f, which is provided in particular for receiving an O-ring and thus for sealing.
  • FIG. 9 shows in a section a further embodiment of a cover plate 2, which in contrast to the in FIG. 8 However, shown section has a flat part surface 2k. Otherwise, the cover plate 2 is configured similar to the in FIG. 8 illustrated embodiment by the cover plate 2 according to FIG. 9 also has a recess 2c, which opens into an opening 2a. If the spiraling depression 2d is thought away, discloses FIG. 6 a top view of the in FIG. 9 shown cover plate 2. The in FIG. 9 However, shown cover plate 2 could also have a spiral extending recess 2d, so that a plan view of this embodiment as in FIG. 6 would look like. In the FIG. 9 shown cover plate 2 also has a central opening 2g and a front side 2h and a back 2i.
  • the front side 2h or the partial surface 2k can run in a variety of ways, such as curved, as in FIG. 10 shown schematically in a section, or edged, as in FIG. 11 shown schematically in a section.
  • the sub-surface is as shown in FIG FIG. 8 shown, frustoconical.
  • the cover plate 2 is designed as a casting, wherein the recess 2c and advantageously also the opening 2a and the inlet opening 21 already a part of the still unprocessed Casting form.
  • the cover plate 2 it is then still essentially necessary to machine the front side 2h, in particular by removing machining machining.
  • a cover plate 2 made of a casting designed in this way has the advantage that there are no or only very small additional costs during production, since the chip-removing machining of the cover plate 2 is required anyway.
  • the inventive method allows self-cleaning a fferenzentrifugalradpumpe 1.
  • the fferenzentrifugalradpumpe 1 has a rotatably mounted SSenzentrifugalrad 25 and arranged immediately adjacent or behind the SSenzentrifugalrad 25 cover plate 2 with a central opening 2g, wherein a hub 21 of the fferenzentrifugalrades 25 or the SSenzentrifugalrad 15th
  • the bearing axis 33 passes through the central opening 2g, so that between the center opening 2g and the hub 21 or the axis 33, a fluid-conducting gap 2b is formed.
  • the cover plate 2 has on the front side 2h at the part surface 2k has a spiral recess 2d, wherein the spiral recess 2d in the direction of rotation R extends from inside to outside, so that from the Gap 2b exiting partial flow F1 and the optionally located therein impurities via the spiral-shaped depression 2d the main flow F is supplied.
  • cover plate 2 and the housing rear wall 23 are always shown as separate parts.
  • the cover plate 2 and the housing rear wall 23 could also be designed in one piece, for example by being made of a single part, for example a cast part.
  • Such a single casting, comprising both the cover plate 2 and the housing rear wall 23, has the advantage that this is inexpensive to produce, and that between the cover plate 2 and the housing rear wall 23 no seal is required. This allows a particularly low-maintenance embodiment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP10192467A 2010-11-24 2010-11-24 Plaque de recouvrement pour une pompe de roue centrifuge à vis et pompe de roue centrifuge à vis comprenant une telle plaque de recouvrement Withdrawn EP2458225A1 (fr)

Priority Applications (17)

Application Number Priority Date Filing Date Title
EP10192467A EP2458225A1 (fr) 2010-11-24 2010-11-24 Plaque de recouvrement pour une pompe de roue centrifuge à vis et pompe de roue centrifuge à vis comprenant une telle plaque de recouvrement
EP17152843.3A EP3179112B1 (fr) 2010-11-24 2011-11-24 Couvercle de pompe avec trous formés comme filtres inertiels
PCT/EP2011/070995 WO2012069618A1 (fr) 2010-11-24 2011-11-24 Pompe à roue hélicocentrifuge autonettoyante présentant recirculation en aval de la roue à aubes
US13/989,086 US9709071B2 (en) 2010-11-24 2011-11-24 Self-cleaning screw-type centrifugal wheel pump with recirculation behind the impeller
DK11799082.0T DK2643596T3 (en) 2010-11-24 2011-11-24 Self-cleaning screw centrifugal pump with flushing partial flow behind the impeller
US13/989,083 US9879695B2 (en) 2010-11-24 2011-11-24 Self-cleaning cover plate in a pump with radial flow
DK17152843.3T DK3179112T3 (da) 2010-11-24 2011-11-24 Pumpedækplade med gennemgangshuller, der er udformet som inertifiltre
JP2013540375A JP5988106B2 (ja) 2010-11-24 2011-11-24 インペラ後部の再循環装備自己洗浄式ネジ形遠心ホイールポンプ
DK11796936.0T DK2643595T3 (en) 2010-11-24 2011-11-24 SELF CLEANING SCREW CENTRIFUGAL WHEEL PUMP WITH RECIRCULATION BACK AT THE SHADOW WHEEL
RU2013128547/06A RU2566865C2 (ru) 2010-11-24 2011-11-24 Самоочищающаяся закрывающая плита в насосе с радиальным потоком
CN201180056678.6A CN103299085B (zh) 2010-11-24 2011-11-24 在带有径向流动的泵中的自清洁的盖板
EP11799082.0A EP2643596B1 (fr) 2010-11-24 2011-11-24 Pompe auto-nettoyante à rouet centrifuge hélicoïdal avec écoulement auxiliaire de rinçage derrière le rouet
RU2013128532/06A RU2559958C2 (ru) 2010-11-24 2011-11-24 Самоочищающийся винтовой центробежный насос с рециркуляцией позади лопастного колеса
PCT/EP2011/070996 WO2012069619A1 (fr) 2010-11-24 2011-11-24 Plaque de fermeture autonettoyante dans une pompe à écoulement radial
CN201180056681.8A CN103339386B (zh) 2010-11-24 2011-11-24 带有在叶轮后的再循环的自清洁的螺旋式离心轮泵
JP2013540376A JP6028162B2 (ja) 2010-11-24 2011-11-24 半径方向の流れを備えるポンプ内自己洗浄式カバープレート
EP11796936.0A EP2643595B1 (fr) 2010-11-24 2011-11-24 Pompe à écoulement radial autonettoyante avec recirculation derrière la roue à aubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10192467A EP2458225A1 (fr) 2010-11-24 2010-11-24 Plaque de recouvrement pour une pompe de roue centrifuge à vis et pompe de roue centrifuge à vis comprenant une telle plaque de recouvrement

Publications (1)

Publication Number Publication Date
EP2458225A1 true EP2458225A1 (fr) 2012-05-30

Family

ID=43828365

Family Applications (4)

Application Number Title Priority Date Filing Date
EP10192467A Withdrawn EP2458225A1 (fr) 2010-11-24 2010-11-24 Plaque de recouvrement pour une pompe de roue centrifuge à vis et pompe de roue centrifuge à vis comprenant une telle plaque de recouvrement
EP11799082.0A Active EP2643596B1 (fr) 2010-11-24 2011-11-24 Pompe auto-nettoyante à rouet centrifuge hélicoïdal avec écoulement auxiliaire de rinçage derrière le rouet
EP17152843.3A Active EP3179112B1 (fr) 2010-11-24 2011-11-24 Couvercle de pompe avec trous formés comme filtres inertiels
EP11796936.0A Active EP2643595B1 (fr) 2010-11-24 2011-11-24 Pompe à écoulement radial autonettoyante avec recirculation derrière la roue à aubes

Family Applications After (3)

Application Number Title Priority Date Filing Date
EP11799082.0A Active EP2643596B1 (fr) 2010-11-24 2011-11-24 Pompe auto-nettoyante à rouet centrifuge hélicoïdal avec écoulement auxiliaire de rinçage derrière le rouet
EP17152843.3A Active EP3179112B1 (fr) 2010-11-24 2011-11-24 Couvercle de pompe avec trous formés comme filtres inertiels
EP11796936.0A Active EP2643595B1 (fr) 2010-11-24 2011-11-24 Pompe à écoulement radial autonettoyante avec recirculation derrière la roue à aubes

Country Status (7)

Country Link
US (2) US9879695B2 (fr)
EP (4) EP2458225A1 (fr)
JP (2) JP5988106B2 (fr)
CN (2) CN103339386B (fr)
DK (3) DK2643595T3 (fr)
RU (2) RU2566865C2 (fr)
WO (2) WO2012069618A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2966322A1 (fr) * 2014-07-10 2016-01-13 Ettem Engineering S.A. Ltd Procédé et dispositifs servant à décharger les contaminants hors d'une chambre d'étanchéité
RU170010U1 (ru) * 2016-09-28 2017-04-11 Валентина Ильинична Жушман Оседиагональный шнековый насос

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US9719515B2 (en) * 2013-01-11 2017-08-01 Liberty Pumps, Inc. Liquid pump
CN104131980B (zh) * 2014-08-14 2017-01-25 杨付许 滚筒式泥浆刷墙机及其泥浆泵
EP3303844B1 (fr) * 2015-06-03 2019-09-18 GEA Tuchenhagen GmbH Roue pour une pompe centrifuge et pompe centrifuge
CN113167280B (zh) * 2017-10-12 2024-07-12 伟尔矿物澳大利亚私人有限公司 浆料泵的入口部件
CN112941827B (zh) * 2019-11-26 2022-12-09 青岛海尔洗衣机有限公司 具有自清洁装置的波轮洗衣机

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EP2643595A1 (fr) 2013-10-02
US20130243634A1 (en) 2013-09-19
WO2012069618A1 (fr) 2012-05-31
JP2014500930A (ja) 2014-01-16
RU2013128547A (ru) 2014-12-27
CN103339386A (zh) 2013-10-02
EP2643596A1 (fr) 2013-10-02
US20130243568A1 (en) 2013-09-19
RU2566865C2 (ru) 2015-10-27
EP3179112A1 (fr) 2017-06-14
JP5988106B2 (ja) 2016-09-07
WO2012069619A1 (fr) 2012-05-31
EP3179112B1 (fr) 2020-08-05
RU2013128532A (ru) 2014-12-27
JP2014502328A (ja) 2014-01-30
CN103299085A (zh) 2013-09-11
RU2559958C2 (ru) 2015-08-20
DK2643595T3 (en) 2017-09-18
US9879695B2 (en) 2018-01-30
DK2643596T3 (en) 2017-10-30
JP6028162B2 (ja) 2016-11-16
EP2643595B1 (fr) 2017-05-24
DK3179112T3 (da) 2020-10-12
US9709071B2 (en) 2017-07-18
CN103339386B (zh) 2017-03-29
CN103299085B (zh) 2016-11-16

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