EP3559475B1 - Pompe non colmatable - Google Patents

Pompe non colmatable Download PDF

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Publication number
EP3559475B1
EP3559475B1 EP17804118.2A EP17804118A EP3559475B1 EP 3559475 B1 EP3559475 B1 EP 3559475B1 EP 17804118 A EP17804118 A EP 17804118A EP 3559475 B1 EP3559475 B1 EP 3559475B1
Authority
EP
European Patent Office
Prior art keywords
impeller
vortex pump
pump according
vane
vortex
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
Application number
EP17804118.2A
Other languages
German (de)
English (en)
Other versions
EP3559475A1 (fr
Inventor
Rolf Witzel
Jochen Fritz
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.)
KSB SE and Co KGaA
Original Assignee
KSB SE and Co KGaA
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 KSB SE and Co KGaA filed Critical KSB SE and Co KGaA
Priority to PL17804118T priority Critical patent/PL3559475T3/pl
Publication of EP3559475A1 publication Critical patent/EP3559475A1/fr
Application granted granted Critical
Publication of EP3559475B1 publication Critical patent/EP3559475B1/fr
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Anticipated expiration legal-status Critical

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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
    • 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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2238—Special flow patterns
    • F04D29/2244—Free vortex
    • 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
    • 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
    • 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
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer
    • F05B2260/604—Vortex non-clogging type pumps

Definitions

  • the invention relates to a free-flow pump with an impeller which has blades for conveying media containing solids.
  • Vortex pumps are also referred to as vortex pumps, the delivery rate of which is transferred to the flow medium by a rotating disk provided with blades, the so-called vortex impeller.
  • Vortex impellers are particularly suitable for pumping media mixed with solid admixtures, such as waste water.
  • the vortex impeller is a radial impeller that allows a large passage for the solids contained in the pumped medium and is less prone to failure.
  • WO 2004/065796 A1 describes a free-flow pump for pumping liquids mixed with solid admixtures.
  • the transition from the housing wall on the suction side to the wall of the housing space located radially to the impeller takes place continuously.
  • the housing space is designed asymmetrically.
  • a vortex pump In the EP 1 616 100 B1 a vortex pump is described, the impeller of which consists of a support disk equipped with open blades. The blades have different heights. A housing wall on the suction side is conical. The distance the casing wall to the leading edges of the higher blades of the impeller decreases with the diameter. A passage with a minimum extension consistently follows a leading edge of a blade that is inclined towards the impeller outlet and has a lower height.
  • a free, unrestricted impeller passage is called a ball passage. It describes the largest permissible diameter of the solids in order to ensure a blockage-free passage. It is given as the sphere diameter in millimeters.
  • the ball passage corresponds at most to the nominal width of the suction or discharge nozzle. In order for this maximum possible ball passage to be achieved with centrifugal pumps, especially with vortex pumps, the path between the moving and stationary components within the pump must at least correspond to the nominal width of the suction or discharge nozzle, otherwise the ball passage is correspondingly smaller.
  • the object of the invention is to provide a free-flow pump that can convey media with relatively large solids and, in accordance with the design, has the highest possible degree of efficiency.
  • the free-flow pump should be distinguished by a method of manufacture that is as inexpensive as possible and should ensure a long service life.
  • the vortex pump should be used as widely as possible and be less susceptible to failure, and should have a favorable NPSH value. Cavitation damage should be avoided. This object is achieved by a free-flow pump with the features of claim 1. Preferred variants can be found in the subclaims.
  • the blades branch. Starting from an original blade section, at least one further blade section branches off.
  • the shovels extend preferably in a curved manner from the inside to the outside in the radial direction.
  • a first blade section branches off at a branch point. As the radius increases further, further branch points can follow.
  • branching blade sections form starting points for further branches.
  • the inventive branch construction of the blades creates a cascading impeller.
  • the branches avoid free spaces in which undesirable eddy formations occur, which would reduce the efficiency of the pump.
  • a pump volume is created which leads to a high degree of efficiency with a low flow rate.
  • the free-flow pump according to the invention has a relatively high degree of efficiency due to the branching design and at the same time ensures reliable conveyance of media containing solids without clogging.
  • the impeller according to the invention is significantly lighter.
  • the construction according to the invention has spaces between the blade sections, which lead to a kind of material saving. This creates a lightweight impeller that is highly efficient.
  • the original blade section is attached to a hub body of the impeller.
  • the hub body is used to fasten the impeller on a shaft and is formed on the support disc of the impeller or is formed by the support disc.
  • the original blade section is attached to the hub body and extends with a curvature from the inside to the outside.
  • a first blade section branches off from a certain radius.
  • the first branch point is at the level of the inlet radius of the suction mouth, so that the medium flows axially through the suction mouth into a region of the impeller which is not branched in the middle and then the medium is conveyed radially outward into the branched areas of the blades by the rotational movement of the impeller.
  • the first branch point is preferably located within the first half of the blade, based on the radial extent of the blade, starting from the origin.
  • a blade section branches off in the first third of the preceding blade section, it being particularly advantageous if the following blade section begins in a first partial area of the preceding blade section.
  • the original vane section and all further branching vane sections of the vane preferably have a course that is curved counter to the direction of rotation, so-called backwardly curved blades. Each blade protrudes with its individual blade sections from the support disk in the suction direction.
  • the respective subsequent branching vane sections have a greater curvature than the pre-arranged vane sections.
  • the original blade section and / or the respective branching blade sections extend to the outer diameter of the impeller.
  • the impeller is designed in one piece with the blades. It proves to be advantageous if the impeller and / or the blades are made of a metallic material. A cast material is preferably used.
  • the construction according to the invention ensures a sufficient ball passage with a high delivery efficiency of the pump at the same time.
  • the formation of branched blades with sufficient spaces in between between the blades makes it possible to reduce the distance between the housing wall on the inlet side and the blade front, while still ensuring a sufficient ball passage.
  • the vortex pump has a high degree of efficiency and at the same time ensures reliable conveyance of media containing solids without clogging.
  • all the blades of the impeller are designed to be congruent to one another and have the same shape.
  • a free-flow pump is shown, in the housing 1 of which an impeller 2 is positioned.
  • the impeller 2 is rotatably connected to a shaft which is shown in Figure 1 is not shown.
  • a hub body 4 which has a bore 5 for screwing in a screw, is used to fasten the impeller 2.
  • the impeller 2 is designed as a vortex impeller.
  • a plurality of blades 7 are arranged on a support disk 6 of the impeller 2.
  • a blade-free space 9 is formed between the impeller 2 and the housing wall 8 on the inlet side.
  • the suction mouth 10 is formed by a housing part 11 on the suction side.
  • the suction mouth 10 forms an inlet for the medium containing solids and has a diameter D.
  • the suction-side housing part 11 is designed as a suction cover.
  • the impeller 2 is arranged in a pump housing 15.
  • the front side of the vortex impeller 2 is at a distance A from the inside of the suction-side housing part 11 on its outer edge.
  • the distance A is preferably defined as the distance that a normal, which is perpendicular to the housing wall 8 on the suction side, has to the outer edge of the blade front of the impeller 2.
  • the distance A is smaller than the diameter D.
  • the height h of the blades 7 decreases in the radial direction, so that the blade front has a slightly inclined or conical shape.
  • Figure 2 shows a perspective view of the impeller, which is designed as a vortex impeller.
  • the impeller 2 is an open radial impeller that does not have a cover disk.
  • Each blade 7 is arranged on the support disk 6.
  • the blades 7 are congruent.
  • Each blade 7 has an original blade section 12 which extends radially outward from the hub body 4 with a curvature.
  • a blade section 14 branches off from the original blade section 12. Both the original blade section 12 and the branching blade section 14 extend to the outer diameter of the impeller 2.
  • the branch point 13 is located at the level of the inlet radius of the suction mouth 10, which in Figure 1 is shown.
  • the blade sections 12, 14 have a course that is curved counter to the direction of rotation. They have a backward curve.
  • the branching blade section 14 has a greater curvature than the original blade section 12.
  • FIG. 11 shows a plan view of the impeller 2 as shown in FIG Figure 2 .
  • the three blades 7 are arranged offset from one another by 120 °.
  • the blade sections 12, 14 have an angular spacing 15 of 40 ° on the outer diameter of the impeller 2.
  • FIG 4 shows a perspective view of an impeller 2 in which two blades 7 are arranged on a support disk 6.
  • the blades 7 are offset from one another by 180 ° on the hub body 4 of the impeller 2.
  • a blade section 14 branches off from the respective original blade section 12 at a first branching point 13, from which a further blade section 17 branches off from a second branching point 16. All of the blade sections 12, 14, 17 extend up to the outer diameter of the impeller 2.
  • the impeller 2 which consists of the support disk 6 with the blades 7 and the hub body 4, is designed in one piece. It consists of a cast material. Spaces 18 for immersing a ball are formed between the blades 7. This ensures a ball passage, which also ensures the conveyance of media containing solids.
  • Figure 5 shows a plan view of the impeller 2 according to the illustration in FIG Figure 4 .
  • the angular distance 15 between the blade sections 12 and 14 is preferably between 30 ° and 60 °, in the exemplary embodiment the angular distance 15 is approximately 45 °.
  • the angular distance 19 between the blade sections 14 and 17 is preferably between 20 ° and 50 °, in the exemplary embodiment the angular distance is approximately 38 °.
  • the blades 7 are arranged offset from one another by an angle of 180 °.

Claims (13)

  1. Pompe à vortex munie d'une roue à aubes (2), qui comprend des aubes (7) pour le transport de milieux contenant des solides,
    caractérisée en ce que
    au moins pour une partie des aubes (7), au moins une section d'aube (14, 17) se ramifie à partir d'une section d'aube d'origine (12).
  2. Pompe à vortex selon la revendication 1,
    caractérisée en ce que la section d'aube d'origine (12) est rattachée à un corps de moyeu (4).
  3. Pompe à vortex selon la revendication 1 ou 2,
    caractérisée en ce qu'un point de ramification (13) se trouve à hauteur d'un rayon d'entrée d'une embouchure d'aspiration.
  4. Pompe à vortex selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'un point de ramification (13) se trouve à l'intérieur de la première moitié, par rapport à une extension radiale de l'aube en partant de son origine, de préférence à l'intérieur du premier tiers de l'aube (7).
  5. Pompe à vortex selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les sections d'aubes (12, 14, 17) présentent une allure courbée vers l'arrière.
  6. Pompe à vortex selon l'une quelconque des revendications 1 à 5, caractérisée en ce que les sections d'aubes ramifiées respectives (13, 14) présentent une courbure plus forte que les sections d'aubes précédentes.
  7. Pompe à vortex selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les sections d'aubes (12, 14, 17) s'étendent jusqu'au diamètre extérieur de la roue à aubes (2).
  8. Pompe à vortex selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la roue à aubes (2) est configurée d'un seul tenant avec les aubes (7) sous la forme d'un disque porteur (6).
  9. Pompe à vortex selon l'une quelconque des revendications 1 à 8, caractérisée en ce que la roue à aubes (2) est fabriquée en un matériau métallique, de préférence un matériau de fonte.
  10. Pompe à vortex selon l'une quelconque des revendications 1 à 9, caractérisée en ce que des chambres (18) pour l'immersion d'une bille sont formées entre les aubes (7).
  11. Pompe à vortex selon l'une quelconque des revendications 1 à 10, caractérisée en ce que toutes les aubes (7) de la roue à aubes (2) sont congruentes.
  12. Pompe à vortex selon l'une quelconque des revendications 1 à 11, caractérisée en ce que les aubes (7) s'étendent en continu en direction radiale à partir d'une origine.
  13. Pompe à vortex selon l'une quelconque des revendications 1 à 12, caractérisée en ce que des sections d'aubes supplémentaires (17) se ramifient à partir de sections d'aubes ramifiées (14).
EP17804118.2A 2016-12-21 2017-11-14 Pompe non colmatable Active EP3559475B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17804118T PL3559475T3 (pl) 2016-12-21 2017-11-14 Pompa o swobodnym przepływie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016225891.5A DE102016225891A1 (de) 2016-12-21 2016-12-21 Freistrompumpe
PCT/EP2017/079120 WO2018114143A1 (fr) 2016-12-21 2017-11-14 Pompe non colmatable

Publications (2)

Publication Number Publication Date
EP3559475A1 EP3559475A1 (fr) 2019-10-30
EP3559475B1 true EP3559475B1 (fr) 2021-01-06

Family

ID=60452613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17804118.2A Active EP3559475B1 (fr) 2016-12-21 2017-11-14 Pompe non colmatable

Country Status (11)

Country Link
US (1) US11187232B2 (fr)
EP (1) EP3559475B1 (fr)
CN (1) CN110073112B (fr)
AU (1) AU2017380927B2 (fr)
BR (1) BR112019010727A2 (fr)
CA (1) CA3045062A1 (fr)
DE (1) DE102016225891A1 (fr)
HU (1) HUE053792T2 (fr)
MX (1) MX2019006127A (fr)
PL (1) PL3559475T3 (fr)
WO (1) WO2018114143A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU197931U1 (ru) * 2019-11-11 2020-06-05 Общество с ограниченной ответственностью "НПО АкваБиоМ" Свободновихревой погружной насос

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144292U (fr) * 1985-02-27 1986-09-05

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE470221C (de) * 1926-10-29 1929-01-08 Karl Plischke Laufrad fuer Kreiselpumpen, insbesondere zur Foerderung von Fluessigkeiten mit groben und faserigen Beimengungen
US3013501A (en) * 1956-12-27 1961-12-19 Skoglund & Olson Ab Centrifugal impeller
US3128051A (en) * 1960-11-07 1964-04-07 Dag Mfg Co Pump
US3267870A (en) * 1964-06-10 1966-08-23 Diamond Alkali Co Combined centrifugal pump and distributor
JPS5426106U (fr) * 1977-07-26 1979-02-20
DK164135C (da) * 1990-05-10 1992-10-12 Grundfos Int Centrifugalpumpe
DE10301630A1 (de) * 2003-01-17 2004-07-29 Ksb Aktiengesellschaft Freistrompumpe
DE10301629B4 (de) 2003-01-17 2013-05-29 Ksb Aktiengesellschaft Freistrompumpe
US20060204363A1 (en) * 2005-03-14 2006-09-14 Jun-Chien Yen Centrifugal blade unit of a cooling fan
CN2842023Y (zh) * 2005-10-28 2006-11-29 陈瑜 用于离心泵和离心式风机的叶轮
EP2228541B1 (fr) * 2009-03-09 2012-11-14 Grundfos Management A/S Roue de rotor pour une pompe centrifuge
CN205117796U (zh) * 2015-11-24 2016-03-30 重庆水泵厂有限责任公司 一种低比转速离心泵叶轮

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144292U (fr) * 1985-02-27 1986-09-05

Also Published As

Publication number Publication date
AU2017380927A1 (en) 2019-06-13
CN110073112B (zh) 2021-06-18
CN110073112A (zh) 2019-07-30
EP3559475A1 (fr) 2019-10-30
DE102016225891A1 (de) 2018-06-21
HUE053792T2 (hu) 2021-07-28
CA3045062A1 (fr) 2018-06-28
PL3559475T3 (pl) 2021-07-05
US20210131438A1 (en) 2021-05-06
US11187232B2 (en) 2021-11-30
WO2018114143A1 (fr) 2018-06-28
MX2019006127A (es) 2019-08-14
AU2017380927B2 (en) 2022-09-22
BR112019010727A2 (pt) 2019-10-01

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