EP0355082B1 - Anneau entousant un jet pour mélanger - Google Patents

Anneau entousant un jet pour mélanger Download PDF

Info

Publication number
EP0355082B1
EP0355082B1 EP89850233A EP89850233A EP0355082B1 EP 0355082 B1 EP0355082 B1 EP 0355082B1 EP 89850233 A EP89850233 A EP 89850233A EP 89850233 A EP89850233 A EP 89850233A EP 0355082 B1 EP0355082 B1 EP 0355082B1
Authority
EP
European Patent Office
Prior art keywords
ring
jet ring
inlet
propeller
rim
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.)
Revoked
Application number
EP89850233A
Other languages
German (de)
English (en)
Other versions
EP0355082A1 (fr
Inventor
Ingvar Karlsson
Martin Mohammar
Ulf Arbeus
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.)
Xylem Water Solutions AB
Original Assignee
ITT Flygt AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20373081&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0355082(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ITT Flygt AB filed Critical ITT Flygt AB
Publication of EP0355082A1 publication Critical patent/EP0355082A1/fr
Application granted granted Critical
Publication of EP0355082B1 publication Critical patent/EP0355082B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/25—Mixers with both stirrer and drive unit submerged in the material being mixed

Definitions

  • the invention concerns a jet ring of the type designed to surround the propeller in a so-called propeller mixer.
  • Mixers of the above mentioned type include a driving unit, an electric motor, a propeller and a driving shaft between those two.
  • the propeller may have two or more blades and can be arranged to be driven with varying speeds, all depending on the use.
  • Mixers are used within various fields for homogenizing and suspension maintenance of liquids for different industrial processes, for liquid manure, for waste water etc.
  • the mixer can be arranged horizontally or vertically or with different angles therebetween. It can also be arranged movable so that the flow from the mixer is brought to sweep over bigger areas or directed towards certain spots within the liquid tank.
  • Another field where a mixer may be used is for creation of currents in a lake to prevent formation of ice.
  • jet ring is cylindrically formed and provided with a somewhat outwards bent collar to make the inflow easier.
  • jet rings are shown in the Swedish Design Registration No:s 34601 and 39392.
  • a disadvantage with these known designs is that the flow close to the ring may be turbulent depending on a too sharp alteration. This causes so-called discontinuance of the boundary layer with an often unstable blocking as a result. The flow through the machine and thus the mixing ability then decreases.
  • US-A-3365 178 shows a machine where vibrations are meant to be avoided by forming the jet ring with a smooth transition part.
  • the ring is combined with a device for air intake and has an extremely low efficiency due to the elongated design of the concentric member.
  • Fig 1 shows a side view of a mixer provided with a jet ring according to the invention.
  • Fig 2 shows the jet ring seen in axial direction and
  • Fig 3 shows a diagram over the fluid losses as a function of the ratio between the transition curve radius (r) and the diameter (D) of the jet ring.
  • FIG. 1 stands for an electric motor, 2 a driving shaft, 3 a propeller with blades 4, 5 a jet ring with inlet and outlet rims 6 and 7 respectively.
  • a jet ring 5 In order to obtain an effective mixing a jet ring 5 must thus be arranged around the propeller 3. In this way an axially directed jet is obtained which in its turn brings parts of the surrounding fluid mass.
  • the flow towards and into the propeller has mainly a direction perpendicular to the axis of rotation.
  • the ring is designed in a special way according to the invention.
  • the conventional, mainly cylindric ring is replaced by a funnel shaped ring having a significant radial extension.
  • the ratio betwen the axial and radial extensions of the jet ring may vary somewhat depending on number of revolutions, type of mixer, the qualities of the liquid to be mixed etc. It is important however, that the inlet rim is directed mainly radially and that the transition from inlet to outlet takes place along an even curve having a relatively big radius. The latter is of course dependant on the diameter of the ring. The bigger the ratio is between the transition radius and the ring diameter, the smaller the flow losses will be and thereby the disturbances (within certain limits). A ratio between 0.1 and 0.3 is normally sufficient. Bigger ratios may cause manufacturing problems.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Catching Or Destruction (AREA)
  • Food-Manufacturing Devices (AREA)

Claims (1)

  1. Dispositif pour des mélangeurs comprenant un moteur d'entraînement (1), un arbre d'entraînement rotatif (2) et une roue (4), dont la périphérie est entouree par un anneau de courant (5) ayant une courte étendue axiale et étant conformé en entonnoir avec son plus grand diamètre à son bord d'entrée (10) et son plus petit diamètre à son bord de sortie (7), la transition entre les bords d'entrée (5) et de sortie (6) respectivement se faisant le long d'une courbe lisse, caractérisé en ce que le bord d'entrée (6) est orienté sensiblement perpendiculairement à l'axe de rotation (2) et en ce que la courbe de transition reliant les bords d'entrée (5) et de sortie (6) respectivement à un rayon (r) qui n'est pas inférieure à 10 % du diamètre (D) de l'anneau de courant (5).
EP89850233A 1988-08-16 1989-07-19 Anneau entousant un jet pour mélanger Revoked EP0355082B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8802902 1988-08-16
SE8802902A SE8802902L (sv) 1988-08-16 1988-08-16 Straalring foer omroerare

Publications (2)

Publication Number Publication Date
EP0355082A1 EP0355082A1 (fr) 1990-02-21
EP0355082B1 true EP0355082B1 (fr) 1993-05-12

Family

ID=20373081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89850233A Revoked EP0355082B1 (fr) 1988-08-16 1989-07-19 Anneau entousant un jet pour mélanger

Country Status (5)

Country Link
EP (1) EP0355082B1 (fr)
JP (1) JPH0275333A (fr)
AU (1) AU614630B2 (fr)
DE (1) DE68906484T2 (fr)
SE (1) SE8802902L (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012205577B3 (de) * 2012-04-04 2013-06-06 Invent Umwelt-Und Verfahrenstechnik Ag Horizontalrührwerk

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1446245A (en) * 1923-02-20 Assicotob tq- the eltsia jejstameled pbodtjcts
US1510514A (en) * 1921-12-10 1924-10-07 Walker Noah Agitator
US1765386A (en) * 1925-01-17 1930-06-24 Nat Aniline & Chem Co Inc Producing nonturbulent circulation of liquids
FR1254351A (fr) * 1960-04-19 1961-02-17 Cofinin Company For Financial Procédé de mélange d'une masse liquide hétérogène et dispositif agitateur correspondant
CH433132A (de) * 1965-02-26 1967-03-31 Mowid Anstalt Einrichtung zum Bewegen und Belüften von offenem Wasser
CH593712A5 (en) * 1975-04-29 1977-12-15 Waelchli Andres Aeration of fermenting liquid fertilisers - using propeller with surrounding flow guide into which air is drawn
AU524892B2 (en) * 1978-01-06 1982-10-07 Mono Pumps Limited Axial-flow and partly axial-flow pumps
GB8334120D0 (en) * 1983-12-21 1984-02-01 Gerry U K Diffusers

Also Published As

Publication number Publication date
JPH0275333A (ja) 1990-03-15
DE68906484D1 (de) 1993-06-17
SE8802902L (sv) 1990-02-17
DE68906484T2 (de) 1993-12-02
AU3643689A (en) 1990-02-22
EP0355082A1 (fr) 1990-02-21
SE8802902D0 (sv) 1988-08-16
AU614630B2 (en) 1991-09-05

Similar Documents

Publication Publication Date Title
US3444817A (en) Fluid pump
US4850704A (en) Two stage blender
JP2015502846A (ja) チャンネル状羽根を有する撹拌インペラ
US3936243A (en) Fuel pump
AU6981296A (en) Submersible mixing impeller
HU176363B (en) Apparatus for turning liquides and for occluding gas in liquides
US3982700A (en) Mixing devices
EP0399972B1 (fr) Agitateur pour utilisations aseptiques
JPS6325117B2 (fr)
EP0355082B1 (fr) Anneau entousant un jet pour mélanger
CA1264125A (fr) Methode et appareil pour introduire un liquide ou un gaz dans de la pate a papier
EP1985357A1 (fr) Procédé et appareil pour le traitement de liquides sous des conditions de cavitation
US3986704A (en) Fluid propeller
US3780998A (en) Aerating and agitating device
KR930023603A (ko) 비정형 단면을 갖는 압축기의 콜렉터
US4564334A (en) Guide wheel for multistage centrifugal pumps
CA1281027C (fr) Melangeur bi-etage
US3251580A (en) High speed mixing head and turbine
US4799857A (en) Casing for fluid flow machines
US5624186A (en) Multi-chamber high pressure dispersion apparatus
US4365931A (en) Fluid displacement device
SU997770A1 (ru) Турбинна мешалка
US4251184A (en) Centrifugal pump
CA1056964A (fr) Melangeur a cuve de substances liquides et gazeuses
JP7408049B1 (ja) 撹拌翼、撹拌方法、撹拌翼の組立方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT NL

17P Request for examination filed

Effective date: 19900315

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ITT FLYGT AKTIEBOLAG

17Q First examination report despatched

Effective date: 19920121

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL

REF Corresponds to:

Ref document number: 68906484

Country of ref document: DE

Date of ref document: 19930617

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930712

Year of fee payment: 5

ITF It: translation for a ep patent filed

Owner name: BUGNION S.P.A.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930730

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19930731

Year of fee payment: 5

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930922

Year of fee payment: 5

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: KSB AKTIENGESELLSCHAFT

Effective date: 19940210

NLR1 Nl: opposition has been filed with the epo

Opponent name: KSB AKTIENGESELLSCHAFT

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19941015

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Free format text: 941015

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee