EP3303844A1 - Rotor pour pompe centrifuge et pompe centrifuge - Google Patents

Rotor pour pompe centrifuge et pompe centrifuge

Info

Publication number
EP3303844A1
EP3303844A1 EP16726585.9A EP16726585A EP3303844A1 EP 3303844 A1 EP3303844 A1 EP 3303844A1 EP 16726585 A EP16726585 A EP 16726585A EP 3303844 A1 EP3303844 A1 EP 3303844A1
Authority
EP
European Patent Office
Prior art keywords
impeller
scraper
centrifugal pump
housing
location
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.)
Granted
Application number
EP16726585.9A
Other languages
German (de)
English (en)
Other versions
EP3303844B1 (fr
Inventor
Markus Pawlik
Ulli ZIMMER
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.)
GEA Tuchenhagen GmbH
Original Assignee
GEA Tuchenhagen GmbH
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 GEA Tuchenhagen GmbH filed Critical GEA Tuchenhagen GmbH
Priority to PL16726585T priority Critical patent/PL3303844T3/pl
Publication of EP3303844A1 publication Critical patent/EP3303844A1/fr
Application granted granted Critical
Publication of EP3303844B1 publication Critical patent/EP3303844B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2294—Rotors specially for centrifugal pumps with special measures for protection, e.g. against abrasion
    • 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
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape
    • F04D29/245—Geometry, shape for special effects
    • 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
    • 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
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/15—Geometry two-dimensional spiral

Definitions

  • the invention relates to an impeller for a centrifugal pump according to the preamble of claim 1 and a centrifugal pump according to the preamble of claim 12.
  • Centrifugal pumps are known in the art and have been used successfully in the process industry for many years.
  • Process industry includes in particular the beverage industry, food technology, pharmacy and biochemistry.
  • Such centrifugal pumps basically have a housing provided with an inlet, an outlet, and a chamber provided in fluid communication with the inlet and the outlet in the housing.
  • an impeller is rotatably received.
  • the patent literature has already considered many aspects of centrifugal pumps, including the design of this impeller.
  • a type of centrifugal pump that can be used in such applications is designed so that fibers and solid components can be crushed.
  • US Pat. No. 7,118,327 B2 proposes such a centrifugal pump in which protruding structures are provided on the rear side of the impeller and which mesh with structures provided on the housing.
  • WO 2011/139223 A1 takes up this idea and proposes a somewhat different solution.
  • the back of the impeller is provided here with a plurality of projections. This added radial extent of the projections is in an interval of +/- 10%, +/- 25% up to +/- 40% of the radius of the impeller.
  • This solution works without interlocking structures. It is an object of the invention to provide a centrifugal pump and an impeller for a
  • centrifugal pump is given by the structurally simple way, a higher compatibility for media that can form deposits.
  • the invention includes an impeller for a centrifugal pump having a housing, an inlet, an outlet, a chamber provided in fluid communication with inlet and outlet, the impeller being rotatably received in the chamber, and a gap between a rear surface of the impeller and a housing wall is provided.
  • This impeller is characterized in that it comprises at least one scraper which is integrally connected to the impeller at a first location and a second location, the first location and second location being at a distance from each other and at this distance between the scraper and the rear surface being a cleanable space is created. This scraper eliminated upon rotation of the impeller deposition, which has formed, for example, when the impeller.
  • the innocuous measure is achieved when so much deposit is eliminated that an unrestrained rotation of the impeller is reached.
  • the cohesive connection of the scraper makes it possible to upgrade a standard impeller inexpensively for application of the centrifugal pump with solids forming media. Instead of special parts with small quantities, the use in large numbers manufactured standard parts is possible as a basis.
  • the gap between scraper and impeller is between the
  • the centrifugal pump has a housing on which an inlet and an outlet are arranged. Within the housing there is provided in fluid communication with inlet and outlet a chamber in which an impeller is rotatably received. Between a rear side of the impeller and a housing wall, a gap is formed. Deposition of the pumped medium in this gap is reduced to a harmless level by the impeller having at least one scraper which is integrally connected at a first location and a second location with the impeller, wherein the first location and second location are spaced from each other and in This distance between the scraper and the back of a cleanable gap is created.
  • This scraper eliminated upon rotation of the impeller deposition, which has formed, for example, when the impeller.
  • the innocuous measure is achieved when such an amount of deposit is eliminated that rotation of the impeller without braking contact with deposit is achieved.
  • the cohesive connection of the scraper makes it possible to upgrade a standard impeller inexpensively for application of the centrifugal pump with solids forming media. Instead of special parts with low
  • the space between scraper and impeller is dimensioned between the joints so that cleaning fluid, which is introduced with application-typical pressure in the centrifugal pump, reliably eliminates media residues. It is advantageous
  • the centrifugal pump has an inlet, an outlet, a housing formed by a bottom and a lid, a chamber provided in fluid communication with inlet and outlet, an impeller rotatably received in the chamber, and an impeller between a rear side and a housing wall provided gap.
  • the media compatibility is increased by a spacer disposed between the lid and bottom and connected to the lid and bottom, and that an axial width of the gap is at least as large as an axial thickness of the spacer.
  • the spacer element is dimensioned in its axial strength so that the formation of a deposit on the housing wall does not immediately lead to an increase of the gap and thus blockage of the impeller.
  • An existing centrifugal pump can be retrofitted by subsequent insertion of a spacer and, where appropriate, replace other components, such as an extended shaft and made more compatible for solid-forming media. In the production of only a few additional, easy to produce components are necessary, so that this solution is very inexpensive.
  • Fig. 1 Side view of a centrifugal pump
  • FIG. 2 shows a section through a centrifugal pump with an impeller in the first design
  • Fig. 3 Detail view of the housing with a spacer between
  • Fig. 4 View of an impeller in a second design
  • Fig. 6 view of an impeller in a fourth design
  • Fig. 7 view of an impeller in a fifth design
  • Fig. 8 View of an impeller in a sixth building mandrel
  • Fig. 9 view of an impeller in a seventh design
  • Fig. 11 View of an impeller in a ninth type
  • Fig. 12 View of an impeller in a tenth design
  • a centrifugal pump 1 is shown in a lateral plan view.
  • Centrifugal pump 1 comprises a housing 2, which is provided with an inlet 3 and an outlet 4. Inlet 3 and outlet 4 are designed to be connected to a fluid guide arrangement, not shown, for example, a piping system.
  • the housing 2 of the centrifugal pump 1 is supported by a lantern 5, the lantern 5 provides a connection to a motor assembly.
  • the Motor assembly usually comprising an electric motor, is located under a cover 6 and rests on feet 7.
  • the housing 2 is constructed in several parts, wherein the parts are releasably connected to each other, for easy maintenance,
  • a cover flange 8 and a bottom flange 9 are provided, which are releasably connected by means of screws 10.
  • the centrifugal pump 1 is shown in Fig. 2 in a sectional view.
  • the housing 2 comprises a cover 1 1 with the cover flange 8 and a bottom 12 with the bottom flange 9.
  • cover flange 8 and bottom flange 9 are arranged indirectly and or indirectly touching and connected together by suitable securing means, in the example shown with the screws 10.
  • Lid 1 1 and bottom 12 define a chamber 13 in which an impeller 14 is rotatably received.
  • the impeller can be designed in semi-open design by adding on a
  • Disc-shaped base body 15 a blade 16 or plurality of blades 16 is disposed on a side facing the inlet 3 of the disk-shaped base body 15.
  • the impeller 14 is rotatably supported about an axis of rotation R in a flying arrangement of a pump shaft 17, which in turn is rotatably mounted on a motor shaft 18.
  • a feather key 19 which is arranged engaging in pump shaft 17 and motor shaft 18, a security against rotation of the waves can be effected against each other.
  • the pump shaft 17 passes through the transition into the chamber 13, a seal assembly which is designed as a mechanical seal and, for example, mounted on the pump shaft 17 rotating seal ring 20 and a in
  • Housing arranged stationary seal ring 21 includes.
  • This seal arrangement can also be designed as a flushed mechanical seal, for example according to the type of DE 203 16 570 U1.
  • a gap 24 is formed with a gap width S.
  • solids can deposit on the housing wall 23 and / or the back 22. The run of the impeller 14 is made difficult or impossible if these deposits have used up the gap width S.
  • a scraper 25 or a plurality of such scrapers 25 are arranged, which are designed so that deposition of solid on the housing wall 23 by scraping is reduced so far that the gap 24 is free enough to allow free rotation of the impeller 14.
  • a Distanzseiement 26 between the lid 1 1 and bottom 12, advantageously between the cover flange 8 and bottom flange 9 may be provided. With this, the centrifugal pump 1 can be converted for applications in which solid formation in the gap 24 is to be expected or observed, the gap width S is increased by this Distanzseiement 26 beyond the standard dimension. Between the Distanzseiement 26 and the lid 1 1, a first seal 27 is provided.
  • a second seal 28 is located between bottom 12 and the Distanzseiement 26.
  • First seal 27 and second seal 28 cause a secure seal of the chamber 13 against the environment 29 of the centrifugal pump first
  • the gasket 27 and 28 are designed and designed according to hygienic standards, for example DIN 1 1864.
  • the chamber 13 may have a peripheral channel 30 which extends in the axial direction as a cylindrical extension in the direction of the motor assembly. It can be designed in the circumferential direction as a spiral channel.
  • the seals 27 and 28 and the Distanzseiement 26 may be arranged as a spatial boundary of this peripheral channel 30.
  • Fig. 3 shows an exploded view of the housing 2 with the
  • the Distanzseiement 26 is formed as a ring with a central annular opening 31. Through this annular opening 31, a portion of the bottom 12 dives through.
  • a ring opening 31 surrounding the first groove 32 is provided on a side facing the cover flange 8 side of the spacer 26, a ring opening 31 surrounding the first groove 32 is provided. This groove serves to receive the first seal 27.
  • a second groove 33 is, likewise surrounding the annular opening 31, on a side of the base flange 9 facing the
  • Spacer 26 formed. It cooperates with a third groove 34 which is formed on the bottom flange 9 by the second and third grooves 33 and 34 together receive the second seal 28.
  • the third groove 34 is designed so that it receives a seal according to the hygienic requirements, if Lid flange 8 and bottom flange 9 without the Distanzseiement 26 directly
  • the lid flange 8 has a collar 35 which extends in an axial direction toward the bottom.
  • the collar has on its radially inner side a first inner surface 36. This is furnished with an edge surface 37 of the
  • the Distanzseiement 26 has an edge portion 38 which is ausformt as an axially offset in the direction of the bottom flange 9 ring. As a result of this offset, an outer surface 39 is formed on the spacer element 26. Together with the first inner surface 36, this outer surface 39 effects a radial alignment, in particular a substantial centering, of the spacer element 26 relative to the cover flange 8.
  • the edge section 38 projects beyond the spacer element 26 in the axial direction and has a second inner surface 40.
  • the second inner surface 40 together with the edge surface 37 together a substantially concentric alignment of Abstandseiement 26 and bottom flange 9 to each other.
  • the gap width S of the gap 24 in the axial direction is at least as large as an axial thickness D of the spacer element 26.
  • cover 1 1, bottom 12 and spacer element 26 are designed so that by installing the spacer 26, the gap width S increased by the thickness D. becomes. This is achieved by the arrangement according to FIG. 3, in which the annular disk-shaped spacer element with its thickness D between the cover flange 8 and the bottom flange 9 can be mounted.
  • the scraper 25 may have features according to one or more of the following
  • FIG. 4 shows a view of the rear side 422 of an impeller 414. This is structured with elevations and depressions, for example by cutting
  • the structuring comprises circular arranged circumferential grooves 441, which alternate with circular peripheral webs 442 in the radial direction.
  • the circumferential webs 442 are interrupted by radial grooves 443, so that the circumferential webs 442 extend only part of the circumference.
  • the radial grooves 443 extend straight from a center of the impeller 414, but can also be curved, as shown in subsequent developments.
  • On the peripheral webs 442 at least one scraper 425 is attached cohesively. If impeller 414 and scraper 425 are made of stainless steel, the material connection is preferably effected by welding. Of the
  • Material connection with the scraper 425 is on at least a first and a second of the furthest from the impeller 414 points 444 and 445 of
  • Circumferential webs 442 created.
  • the scraper 425 bridges the circumferential grooves 441. At the same time, this bridging creates a space between scraper 425 and impeller 414. Its dimensions are such that the application-specific hygiene requirements are met. This is
  • the scraper 425 extends radially outwardly in a radial extent from an area near a hub 446 of the impeller 414 and extends on a circumferentially-curved tooth 447 of the impeller 414.
  • the bend of the tooth 447 results in a bend of the scraper 425.
  • the scraper 425 completely covers the radius of the impeller 414.
  • Fig. 5 a slightly modified form of an impeller 514 is shown.
  • Rear 522 also has a structuring in the form of circular
  • the radial grooves 543 are straight and may extend from a center of the hub 546.
  • the scraper 525 extends straight from the hub 546 and extends to one of the teeth 547. This and the straight course results in only an extension of the scraper 525 in the radial direction of the impeller 514, which does not reach the full radius. In particular, the inner part of the impeller 514 is covered.
  • the scraper 525 has lower recesses 549 on its side facing the impeller 514. On its side facing away from the impeller 514 upper recesses 550 are arranged.
  • the Upper recesses 550 improve the action of the scraper, deposits in the gap 24 are even better eliminated.
  • the lower recesses 549 enlarge the gap 548 between scraper 525 and impeller 514, so that it can be easily cleaned and the centrifugal pump 1 fulfills hygienic requirements easier.
  • the scraper 525 is at least a first point 544 and a second point 545 material coherently connected to the crests of the peripheral webs 542.
  • the embodiment according to FIG. 6 shows an impeller 614, which on its rear side 622 likewise has circular circumferential and circumferential grooves 641 and circumferential webs 642 in the radial direction. These are interrupted by radially extending radial grooves 643.
  • the scraper 625 is segmented in this embodiment and includes at least a first segment 651 and a second segment 652. Each of the segments 651 and 652 has a first location 644 and a second location, respectively Point 645 with two, preferably adjacent, circumferential webs 642 integrally connected to form a gap 648.
  • the segments 651 and 652 are in the radial direction and
  • Segments may be near the hub 646 and disposed on a tooth 647 or a plurality of teeth 647.
  • the summed radial coverage through the segments can be more than 60% to achieve a good effect with less expensive manufacturing.
  • the impeller 714 has a smooth rear side 722, in which structuring is dispensed with, as in the previously shown examples.
  • the scraper 725 of which several may be distributed along the periphery for better performance and easier balancing of the impeller 714, extends straight in the radial direction. Its upper edge 753, which faces away from the back 722, is smooth without elevations or depressions. On the opposite side of the upper edge 753 in the axial direction of the scraper 725 has at least one lower recess 749 through which a gap 748 between the back 722 and the scraper 725 is created.
  • Interspace 748 extends between a first location 744 and second location 745 at which a bond between back 722 and scraper 725 is created.
  • the radial extent of the scraper 725 begins at a distance A from the hub 746 and extends to one of the teeth 747, with more than two-thirds of the radius of the impeller 714 are covered in order to achieve a good cleaning effect.
  • the scraper 725 can span a free space 754 between two adjacent teeth 747.
  • the embodiment shown in FIG. 8 largely corresponds to the embodiment explained with reference to FIG. 7. With the smooth back 822 of the impeller 814, a scraper 825 is firmly bonded. Notwithstanding the embodiment of FIG. 7, the upper edge 853 of the scraper 825 is structured by upper recesses 850, for example, wave-like. This will be a good one
  • the rear side 922 of the impeller 914 is structured in this embodiment by incorporated circular circumferential grooves 941, which alternate with circular peripheral webs 942 in concentric sequence.
  • Straight radial grooves 943 interrupt circumferential grooves 941 and circumferential webs 942.
  • Radial grooves 943 are straight, but are inclined against the radial direction. They can also be offset to the radial direction and follow a secant.
  • the scraper 925 has, as in the embodiment according to FIG. 7, a smooth upper edge 953. On its side facing the rear side 922, at least one lower recess 949 is provided, which extends between a first location 944 and a second location 945. At locations 944 and 945, the scraper 925 is integrally connected to the upper edges of two circumferential webs 942. By provided between the first and second location 944 and 945 considersrumble 941 and the lower
  • Recess 949 is a gap 948 created between scraper 925 and impeller 914, which is particularly easy to clean.
  • the scraper 925 is straight shaped and extends over part of the radius of the impeller 914,
  • FIG. 10 shows an impeller 1014, which largely corresponds to that in FIG. 9.
  • the back 1022 has at least one circumferential groove 1041 and a peripheral ridge 1042.
  • at least one straight radial groove 1043 may be provided, which extends partially or advantageously entirely between the hub 1046 and a tooth root 1055.
  • At least one rectilinear scraper 1025 extending in the radial direction is at a first location 1044 and one second location 1045 cohesively connected to the back 1022. Between the locations 1044 and 1045, the scraper 1025 has a lower recess 1049, so that a space 1048 is created between the back 1022 and the scraper 1025.
  • This gap 1048 is increased by one or more than one circumferential groove 1041 and therefore easier to clean.
  • the upper edge 1053 of the scraper 1025 facing away from the rear side 1022 has at least one upper recess 1050, which improves the cleaning action of the scraper 1025.
  • the scraper 1 125 is made of a perforated plate, which is divided into strips, each strip gives a scraper 1 125.
  • the pitch of the perforated plate can be made at the height of the holes, so that in a simple manner, the gap 1 148 and lower recesses 1 149 and upper recesses 1 150 arise.
  • the perforated plate can be bent as shown in Fig. 1 1 and with its curvature following the course of the tooth 1 147 cohesively attached to at least a first point 1 144 and a second point 1 145.
  • a very good function of the scraper 1 125 is observed when it covers at least 75% of the radius of the impeller 1 1 14.
  • the backside 1 122 can be made smooth or structured, the structuring is more expensive, but has a better cleaning effect.
  • the structuring may be in the form of at least one circumferential groove 1 141 and a peripheral ridge 1 142 and may comprise at least one radial groove 1443.
  • FIG. 12 shows an impeller 1214 which deviates in its design from the impeller 1 1 14 explained with reference to FIG. 11 by the shape of the scraper 1225.
  • the scraper 1225 is rectilinear and extends from the hub 1246 except for a tooth 1247 of the impeller 1214, covering at least 75%.
  • the aforementioned scrapers 25, 425, 525, 625, 725, 825, 925, 1025, 125 and 1225 are preferably designed and arranged such that they are balanced with respect to the axis of rotation of the centrifugal pump 1, so that additional means for balancing the impeller 14, 414, 514, 614, 714, 814, 914, 1014, 1114 and 1214 may be omitted.
  • the application of the invention has been described with reference to a centrifugal pump, but is also applicable in a self-priming centrifugal pump.
  • a self-priming property can be achieved by connecting a pumping stage, such as a liquid ring pumping stage, upstream of the inlet and a return line.
  • a return line between a suction region of a liquid ring pumping stage and the part of the centrifugal pump in which pumped fluid is under pressure is described in DE 10 2007 032 228 A1, the contents of which are incorporated herein by reference.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un rotor pour une pompe centrifuge (1) comprenant un boîtier (2), une entrée (3), une sortie (4), une chambre (13) prévue dans le boîtier (2) et en communication de fluide avec l'entrée (3) et la sortie (4). Le rotor (14, 414, 514, 614, 714, 814, 914, 1014, 1114, 1214) est logé de manière rotative dans la chambre (13) et une fente (24) est ménagée entre un côté arrière (22, 422, 522, 622, 722, 822, 922, 1022, 1122, 1222) du rotor (14, 414, 514, 614, 714, 814, 914, 1014, 1114, 1214) et une paroi de boîtier (23). Selon l'invention, pour améliorer la compatibilité de milieux formant des dépôts, le rotor (14, 414, 514, 614, 714, 814, 914, 1014, 1114, 1214) comporte au moins une racloir (25, 425, 525, 625, 725 , 825, 925, 1025, 1125, 1225) qui est reliée par liaison de matière au rotor (14, 414, 514, 614, 714, 814, 914, 1014, 1114, 1214) à un premier emplacement (444, 544, 644, 744, 944, 1044, 1144) et à un second emplacement (445, 545, 645, 745, 945, 1045, 1145). Le premier emplacement (444, 544, 644, 744, 944, 1044, 1144) et le second emplacement (445, 545, 645, 745, 945, 1045, 1145) présentent un écartement entre eux et un espace intermédiaire nettoyable (548, 648, 748, 948, 1048, 1148) est ménagé dans cet écartement entre le racloir (25, 425 , 525, 625, 725, 825, 925, 1025, 1125, 1225) et le côté arrière (22, 422, 522, 622, 722, 822, 922, 1022, 1122).
EP16726585.9A 2015-06-03 2016-06-02 Roue pour une pompe centrifuge et pompe centrifuge Active EP3303844B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16726585T PL3303844T3 (pl) 2015-06-03 2016-06-02 Wirnik dla pompy wirowej i pompa wirowa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015007171 2015-06-03
PCT/EP2016/062534 WO2016193387A1 (fr) 2015-06-03 2016-06-02 Rotor pour pompe centrifuge et pompe centrifuge

Publications (2)

Publication Number Publication Date
EP3303844A1 true EP3303844A1 (fr) 2018-04-11
EP3303844B1 EP3303844B1 (fr) 2019-09-18

Family

ID=56097127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16726585.9A Active EP3303844B1 (fr) 2015-06-03 2016-06-02 Roue pour une pompe centrifuge et pompe centrifuge

Country Status (7)

Country Link
US (1) US20180163741A1 (fr)
EP (1) EP3303844B1 (fr)
CN (1) CN107995939B (fr)
DE (1) DE102016110224B4 (fr)
ES (1) ES2756602T3 (fr)
PL (1) PL3303844T3 (fr)
WO (1) WO2016193387A1 (fr)

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CN112682365A (zh) * 2020-12-22 2021-04-20 王海红 一种电池制备生产用的耐腐蚀循环泵

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Also Published As

Publication number Publication date
US20180163741A1 (en) 2018-06-14
CN107995939A (zh) 2018-05-04
DE102016110224B4 (de) 2020-03-12
ES2756602T3 (es) 2020-04-27
WO2016193387A1 (fr) 2016-12-08
CN107995939B (zh) 2020-01-21
EP3303844B1 (fr) 2019-09-18
DE102016110224A1 (de) 2016-12-08
PL3303844T3 (pl) 2020-03-31

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