EP3559475A1 - Pompe non colmatable - Google Patents

Pompe non colmatable

Info

Publication number
EP3559475A1
EP3559475A1 EP17804118.2A EP17804118A EP3559475A1 EP 3559475 A1 EP3559475 A1 EP 3559475A1 EP 17804118 A EP17804118 A EP 17804118A EP 3559475 A1 EP3559475 A1 EP 3559475A1
Authority
EP
European Patent Office
Prior art keywords
free
impeller
flow pump
blades
pump according
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
EP17804118.2A
Other languages
German (de)
English (en)
Other versions
EP3559475B1 (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
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
    • F04D29/2238—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
    • 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
    • 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 having blades for conveying solids-containing media.
  • Such free-flow pumps are also referred to as vortex pumps whose delivery rate is transferred to the flow medium by a rotating disc provided with blades, the so-called free-flow impeller.
  • Free-flow impellers are particularly suitable for conveying solid admixed media, such as dirty water.
  • the free-flow impeller is a radial impeller, which allows a large passage for the solids contained in the pumped medium and is less susceptible to interference.
  • WO 2004/065796 A1 describes a free-flow pump for conveying liquids mixed with solid admixtures. There is a gap between the impeller and the suction-side housing wall so that solids can pass through the free-flow pump without blockages. The transition of the suction-side housing wall to the wall of the housing space located radially to the impeller is infinitely variable. The case room is asymmetrically designed.
  • a free-flow pump whose impeller consists of a support disk equipped with open blades.
  • the blades have different heights.
  • a suction-side housing wall is conical. The distance the housing wall to the leading edges of the higher blades of the impeller decreases with the diameter.
  • a passage with a minimum extension follows consistently a leading edge of a lesser inclined to the impeller outlet inclined blade.
  • ball passage a free, unused impeller passage is called. It describes the largest permissible diameter of the solids to ensure a clog-free passage. It is given as ball diameter in millimeters.
  • the ball passage corresponds at most to the nominal diameter of the suction or
  • the object of the invention is to provide a free-flow pump, which can promote media with larger solids and thereby has a design according to highest possible efficiency.
  • the free-flow pump should be characterized by the most cost-effective method of production and ensure a long service life.
  • the free-stream pump should be as versatile as possible and less susceptible to interference, and have a favorable NPSH value. Cavitation damage should be avoided.
  • the blades branch. Starting from an original bucket section, at least one further bucket section branches off.
  • the shovels preferably extend in a curved manner from the inside to the outside in the radial direction.
  • a first blade section branches off. As the radius increases, more branch points may follow.
  • branching blade sections form starting points for further branches.
  • the inventive branch construction of the blades creates a cascading impeller.
  • free spaces are avoided in which undesirable vortex formations occur, which would reduce the efficiency of the pump.
  • the pump according to the invention is a
  • the inventive free-flow pump has a relatively high efficiency due to the branching construction and at the same time ensures a reliable conveyance of solids-containing media without blockages occurring.
  • the impeller according to the invention is significantly lighter.
  • the construction according to the invention has spaces between the fairleads, which lead to a kind of material saving.
  • a lightweight impeller is created, which has a high efficiency.
  • the original bucket section attaches to a hub body of the running wheel.
  • the hub body serves to fasten the impeller on a shaft and is formed on the support disk of the impeller or is formed by the support disk.
  • the original bucket portion attaches to the hub body and extends with a curvature from inside to outside. From a certain radius branches off a first blade section.
  • the first branch point lies 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 by the rotational movement of the impeller radially outward into the branched portions of the blades.
  • the first branch point is 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, wherein it proves to be particularly advantageous if the subsequent blade section begins in a first partial area of the preceding blade section.
  • the original bucket section and all further branching bucket sections of the bucket preferably have a course curved in a direction opposite to the direction of rotation, so-called backward curved blades. Each blade protrudes with its individual blade sections of the support disk in the suction direction.
  • the respectively following branching blade sections have a greater curvature in relation to the preceding blade sections.
  • the original vane section and / or the respective branching vane sections extend to the outer diameter of the impeller.
  • the impeller is integrally formed with the blades. It proves to be advantageous if the impeller and / or the blades are made of a metallic material. Preferably, a casting material is used.
  • all blades of the impeller are formed congruent to each other and have the same shape.
  • FIG. 1 shows a schematic meridian section through a free-flow pump
  • FIG. 2 is a perspective view of a free-flow impeller with three blades
  • FIG. 3 is a plan view of the free-flow impeller as shown in FIG. 2;
  • FIG. 4 shows a perspective view of a free-flow impeller with two blades
  • FIG. 5 is a plan view of the free-stream impeller as shown in Figure 4.
  • a free-flow pump is shown, in the housing 1, an impeller 2 is positioned.
  • the impeller 2 is rotatably connected to a shaft, which is not shown in Figure 1.
  • the attachment of the impeller 2 is a hub body 4, which has a bore 5 for screwing a screw.
  • the impeller 2 is designed as a freewheel.
  • On a support disk 6 of the impeller 2 a plurality of blades 7 are arranged.
  • a blade-free space 9 is formed.
  • the suction mouth 10 is formed by a suction-side housing part 1 1.
  • the suction mouth 10 forms an inlet for the solids-containing medium and has a diameter D.
  • the suction-side housing part 1 1 is designed as a suction cover.
  • the impeller 2 is arranged in a pump housing 15.
  • the front side of the free-stream impeller 2 has at its outer edge a distance A to the inside of the suction-side housing part 1 1.
  • the distance A is preferably defined as the distance that a normal, which is perpendicular to the suction-side housing wall 8, to the outer edge of the blade front of the impeller 2 has.
  • the distance A is smaller than the diameter D.
  • the height h of the blades 7 decreases in the embodiment in the radial direction, so that the blade front has a slightly oblique or conical shape.
  • FIG 2 shows a perspective view of the impeller, which is designed as a freewheel.
  • the impeller 2 is an open radial wheel which has no cover disk.
  • the blades 7 are congruent.
  • Each blade 7 has an original blade portion 12 which extends radially outward from the hub body 4 with a curvature.
  • the branch point 13 is located at the level of the inlet radius of the suction mouth 10, which is shown in FIG.
  • the blade sections 12, 14 have a curved against the direction of rotation course. The have a backward curved course.
  • the branching blade section 14 has a greater curvature relative to the original blade section 12.
  • Figure 3 shows a plan view of the impeller 2 as shown in Figure 2.
  • the three blades 7 are offset by 120 ° to one another.
  • the blade sections 12, 14 have at the outer diameter of the impeller 2 at an angle distance 1 5 of 40 °.
  • 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 by 180 ° relative to one another on the hub body 4 of the rotor 2. From the respective original blade section 12 branches off at a first branch point 1 3 a show- feiabêt 14, from which in turn branches off from a second branching point 1 6 another blade section 17. All blade sections 1 2, 14, 1 7 extend to the outer diameter of the impeller second
  • the impeller 2 which consists of the support disk 6 with the show fine 7 and the hub body 4, integrally formed. It consists of a cast material. Between the blades 7 spaces 18 are formed for dipping a ball. As a result, a ball passage is ensured, which ensures a promotion of solids-containing media.
  • Figure 5 shows a plan view of the impeller 2 as shown in Figure 4.
  • the angular distance 15 between the blade sections 1 2 and 14 is preferably between 30 ° and 60 ° in the embodiment beträg t the angular distance 15 about 45 °.
  • the angular distance 1 9 between the blade sections 14 and 17 is preferably between 20 ° and 50 ° in the embodiment, the angular distance is about 38 °.
  • the blades 7 are offset by an angle of 180 ° to each other.

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 une pompe non colmatable comprenant une roue à aubes qui présente des aubes destinées à refouler des milieux contenant des matières solides. Au moins une partie des aubes (7) se ramifie à partir d'une section d'origine d'aube (12) dans d'autres sections d'aube (14, 17).
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 true EP3559475A1 (fr) 2019-10-30
EP3559475B1 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

Family Cites Families (13)

* 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
JPS61144292U (fr) * 1985-02-27 1986-09-05
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

Also Published As

Publication number Publication date
DE102016225891A1 (de) 2018-06-21
BR112019010727A2 (pt) 2019-10-01
AU2017380927A1 (en) 2019-06-13
AU2017380927B2 (en) 2022-09-22
HUE053792T2 (hu) 2021-07-28
WO2018114143A1 (fr) 2018-06-28
CN110073112B (zh) 2021-06-18
MX2019006127A (es) 2019-08-14
CN110073112A (zh) 2019-07-30
CA3045062A1 (fr) 2018-06-28
PL3559475T3 (pl) 2021-07-05
US11187232B2 (en) 2021-11-30
US20210131438A1 (en) 2021-05-06
EP3559475B1 (fr) 2021-01-06

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