EP0236236A1 - Mischungsvorrichtung für zwei Flüssigkeiten verschiedener Dichten - Google Patents

Mischungsvorrichtung für zwei Flüssigkeiten verschiedener Dichten Download PDF

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Publication number
EP0236236A1
EP0236236A1 EP87400476A EP87400476A EP0236236A1 EP 0236236 A1 EP0236236 A1 EP 0236236A1 EP 87400476 A EP87400476 A EP 87400476A EP 87400476 A EP87400476 A EP 87400476A EP 0236236 A1 EP0236236 A1 EP 0236236A1
Authority
EP
European Patent Office
Prior art keywords
tube
liquids
helical
mixing device
shaft
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
EP87400476A
Other languages
English (en)
French (fr)
Other versions
EP0236236B1 (de
Inventor
Bernard Dureault
Michel Quanquin
Delphin Loucano
Didier Ruban
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0236236A1 publication Critical patent/EP0236236A1/de
Application granted granted Critical
Publication of EP0236236B1 publication Critical patent/EP0236236B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/81—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow
    • B01F27/812—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow the stirrers co-operating with surrounding stators, or with intermeshing stators, e.g. comprising slits, orifices or screens

Definitions

  • the present invention relates to a device for mixing two liquids, in particular of different densities.
  • the invention relates to a device for mixing two liquids, in particular of different densities, comprising a tube arranged substantially vertically, a shaft capable of rotating coaxially in the tube and successively comprising from bottom to top a helical lower part whose l propeller is formed in a first direction, at least one pallet located in a radial plane of the shaft and with an outside diameter slightly less than the inside diameter of the tube, a helical upper part whose propeller is formed in a second direction contrary to the first direction, holes being formed in the tube facing the pallet, a liquid inlet orifice being provided so that liquid flows down to the helical upper part, the shaft rotating according to the first direction so that the liquids are sucked in through the open lower end of the tube and through said inlet orifice and expelled through the holes.
  • DE-C-634 389 is a device for mixing a liquid with another liquid, a gas or a solid.
  • this device comprises two propellers mounted on a common axis, the pitches of these propellers being opposite. Between them, there are radial pallets mounted on the shaft opposite the discharge orifices.
  • the respective fluids are entrained by propellers, the blades of which do not extend over more than one complete revolution, ie 360 °. Consequently, the blades of these propellers give speed to the flow of liquid but do not give it pressure.
  • the pitches of these propellers are not suitable for the case where the fluids have different densities.
  • the subject of the invention is precisely a device mixer of two liquids making it possible to overcome the drawbacks mentioned above.
  • the mixing device is characterized in that the helical parts comprise at least several complete turns so as to constitute an Archimedes screw, and in that each of said helical parts has a helix pitch defined so as to impose a ratio between the flows of liquids as a function of the respective densities of these liquids.
  • the mixing device is suitable for the case where the densities of the fluids are different, for example in a ratio of 1 to 1.8. It also makes it possible to mix different volumes, for example in a ratio of 1 to 50. In other words, 1 part of a liquid is mixed with 50 parts, by volume, of the other liquid. To reduce the volume, simply tighten the pitch of the Archimedes' screw, which has the effect of reducing the flow rate.
  • said inlet orifice consists of windows formed in the tube slightly above the helical upper part or by the open upper end of the tube.
  • a device for mixing two liquids is shown in the single figure.
  • the mixing device referenced 2 is used for mixing two liquids 4, 6 of different densities, the liquid 6 being for example the heaviest and lying at the bottom of a container 8.
  • the mixing device 2 firstly comprises a tube 10 disposed substantially vertically.
  • a shaft 12 is housed in the tube 10 so as to be able to rotate coaxially in the tube 10.
  • This shaft 12 successively comprises from bottom to top a helical lower part 14 whose helix is formed in a first direction, at least one pallet 16 whose outer diameter is slightly less than the inside diameter of the tube 10 and an helical upper part 18 whose helix is formed in a second opposite direction first sense audit.
  • Holes 20 are formed in the wall of the tube 10 opposite the pallet 16.
  • Windows 22 are also formed in the wall of the tube 10 slightly above the helical upper part 18.
  • the helical lower part 14 is intended to suck the liquid 6 of higher density through the lower end of the tube 10 and the helical upper part 18 is intended to suck the liquid 4 of lower density through the windows 22, the steps of the propellers being determined according to the density of each of the liquids and the respective flow rates desired for said liquids.
  • the mixing device according to the invention therefore allows mixing of liquids of very different densities while having slow separation, fine and fairly long dispersion and efficient exchange of salts.
  • Such a device makes it possible to pass almost all of the salts from one solution into the other solution. It is capable of working in both continuous and discontinuous operation.
  • the device would therefore essentially be used to suck the liquid 6 of higher density, bring it up and mix it with the liquid 4 which would descend into the tube 10. The mixture made would always be expelled through the holes 20.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
EP87400476A 1986-03-05 1987-03-04 Mischungsvorrichtung für zwei Flüssigkeiten verschiedener Dichten Expired - Lifetime EP0236236B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8603093A FR2595264B1 (fr) 1986-03-05 1986-03-05 Dispositif melangeur de deux liquides notamment de densites differentes
FR8603093 1986-03-05

Publications (2)

Publication Number Publication Date
EP0236236A1 true EP0236236A1 (de) 1987-09-09
EP0236236B1 EP0236236B1 (de) 1990-01-10

Family

ID=9332784

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400476A Expired - Lifetime EP0236236B1 (de) 1986-03-05 1987-03-04 Mischungsvorrichtung für zwei Flüssigkeiten verschiedener Dichten

Country Status (3)

Country Link
EP (1) EP0236236B1 (de)
DE (1) DE3761351D1 (de)
FR (1) FR2595264B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0424315A3 (en) * 1989-10-19 1992-03-04 Ciba-Geigy Ag Tetracyclic pyrrole lactam derivatives
DE102005031459A1 (de) * 2005-07-04 2007-01-11 Vitzthum, Frank, Dr. Vorrichtung und Verfahren zur Rotor-Stator-Homogenisation
CN108772001A (zh) * 2018-08-15 2018-11-09 国家海洋局第二海洋研究所 溶液混合罐及溶液配置装置
CN110341161A (zh) * 2019-07-24 2019-10-18 重庆海塑建材有限公司 门窗框塑钢型材挤塑机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE634389C (de) * 1933-11-28 1936-08-27 Giesserei Und Maschinenfabrik Behaelter zum Mischen von Fluessigkeiten mit anderen Fluessigkeiten, Gasen oder Feststoffen
GB518854A (en) * 1938-10-08 1940-03-08 James Pettigrew Ogilvie Improvements in and relating to mixing machines
FR1026775A (fr) * 1950-07-18 1953-05-04 Schenley Ind Inc Perfectionnements apportés aux procédés et dispositifs pour gazéifier ou aérer des liquides
US3266781A (en) * 1963-06-27 1966-08-16 Buehler Ag Geb Mixing machine
GB1387986A (en) * 1971-01-07 1975-03-19 Silverson Machines Ltd Mixing devices
FR2507100A1 (fr) * 1981-06-06 1982-12-10 Karlsruhe Wiederaufarbeit Agitateur pour la chambre de melange d'un melangeur-decanteur notamment pour le traitement de combustibles nucleaires radio-actifs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE634389C (de) * 1933-11-28 1936-08-27 Giesserei Und Maschinenfabrik Behaelter zum Mischen von Fluessigkeiten mit anderen Fluessigkeiten, Gasen oder Feststoffen
GB518854A (en) * 1938-10-08 1940-03-08 James Pettigrew Ogilvie Improvements in and relating to mixing machines
FR1026775A (fr) * 1950-07-18 1953-05-04 Schenley Ind Inc Perfectionnements apportés aux procédés et dispositifs pour gazéifier ou aérer des liquides
US3266781A (en) * 1963-06-27 1966-08-16 Buehler Ag Geb Mixing machine
GB1387986A (en) * 1971-01-07 1975-03-19 Silverson Machines Ltd Mixing devices
FR2507100A1 (fr) * 1981-06-06 1982-12-10 Karlsruhe Wiederaufarbeit Agitateur pour la chambre de melange d'un melangeur-decanteur notamment pour le traitement de combustibles nucleaires radio-actifs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0424315A3 (en) * 1989-10-19 1992-03-04 Ciba-Geigy Ag Tetracyclic pyrrole lactam derivatives
DE102005031459A1 (de) * 2005-07-04 2007-01-11 Vitzthum, Frank, Dr. Vorrichtung und Verfahren zur Rotor-Stator-Homogenisation
CN108772001A (zh) * 2018-08-15 2018-11-09 国家海洋局第二海洋研究所 溶液混合罐及溶液配置装置
CN110341161A (zh) * 2019-07-24 2019-10-18 重庆海塑建材有限公司 门窗框塑钢型材挤塑机
CN110341161B (zh) * 2019-07-24 2021-09-28 重庆海塑建材有限公司 门窗框塑钢型材挤塑机

Also Published As

Publication number Publication date
EP0236236B1 (de) 1990-01-10
FR2595264A1 (fr) 1987-09-11
DE3761351D1 (de) 1990-02-15
FR2595264B1 (fr) 1990-07-27

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