EP0713422B1 - Mischkopf zum mischen von fluiden, insbesondere gasen und/oder flüssigkeiten - Google Patents

Mischkopf zum mischen von fluiden, insbesondere gasen und/oder flüssigkeiten Download PDF

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Publication number
EP0713422B1
EP0713422B1 EP95917251A EP95917251A EP0713422B1 EP 0713422 B1 EP0713422 B1 EP 0713422B1 EP 95917251 A EP95917251 A EP 95917251A EP 95917251 A EP95917251 A EP 95917251A EP 0713422 B1 EP0713422 B1 EP 0713422B1
Authority
EP
European Patent Office
Prior art keywords
mixing head
housing
rotor
head according
blades
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.)
Expired - Lifetime
Application number
EP95917251A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0713422A1 (de
Inventor
Mark Braendli
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0713422A1 publication Critical patent/EP0713422A1/de
Application granted granted Critical
Publication of EP0713422B1 publication Critical patent/EP0713422B1/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
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
    • B01F23/2131—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using rotating elements, e.g. rolls or brushes
    • 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
    • B01F27/50—Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers

Definitions

  • the invention relates to a mixing head for mixing fluids according to the preamble of claim 1 .
  • a fan wheel is known from EP-0 344 498 A2, but as an alternative to commonly used, rotating in a housing Bucket or impeller chain-like link elements for production of a rotating gas stream can be proposed.
  • the one described there Blowers are particularly used in pneumatic conveying of dust, shavings and wood chips, such as those found in wood and Plastic processing incurred, use.
  • the chain-like link elements in particular serve to reduce the cleaning work on the fan, in particular when the gas to be pumped has a high dust load is present.
  • an impact surface is provided against the drive side which prevents the inflowing gases from escaping centrally axially can. This ensures that the gas flow is on their way through the blower into the orbit of the rotating link chains must arrive so that there is a thorough mixing of the gas flow results, in particular by turbulence on the chain-like Link elements.
  • Such movable, chain-like link elements can, however, in particular tear off in the start phase of the rotational movement or jam each other.
  • this link head vertically also arises in the start-up phase until the chain rings open flat have a significant burden on the engine mounts since the Chain rings until they are fully open, a big imbalance cause.
  • additional fluid components are provided.
  • EP-0 473 618 B1 describes a similar fan, which is a fan wheel with a central hub and attached, mutually movable Has elements in the form of chain pieces to a helical or helical gas flow in one device to achieve the burning of bio or solid masses.
  • EP-0 525 711 A2 also relates to a device for Burn bio or solid masses with one channel and one similar link head blower, whose mouth into the interior of a Gas or fire pipe is directed.
  • a mixing device that creates an axial flow of air against the direction of flow of a wide, helical rotating gas stream supplies, is also known from EP-A0 340 859 A1. Just as with the known mixing devices, however, lies here an insufficient or missing setting option with regard to changing mixing components.
  • the formation of the stationary deflection hood allows an ideal deflection of the gas being present invention dome- is formed hemispherical or conical, and also curved on its side facing the rotor inner side in the rotor rotation direction having outwardly leaking vanes which the backflowing gases already lead in the direction of rotation of the rotation, which prevents uncontrolled turbulence in the edge area of the backflow pre-mixer.
  • this dome-shaped design of this backflow pre-mixer which is shaped as a deflection hood, is particularly advantageous.
  • both axial suction of the fluid to be conveyed is achieved as well radial acceleration, resulting in an intense swirl.
  • This combination of an axial vane ring with a Radial blade ring, which is preferred on a common hub are attached, there is thus an effective mixing, which for different gases and / or liquids is applicable, i.e. the Mixing of additives and air takes place in a metered manner in the area of the housing.
  • a second gas component can be replaced by another Front end arranged mixing nozzle are supplied, the Suction takes place using the axial blade ring, which means that the mixing device can also be used in systems that not be operated in negative pressure.
  • nozzles be provided, for example for admixing liquid additives, so that several components to the carrier fluid, in general Air that can be mixed.
  • a mixing head 1 comprises essentially a rotor 2 and a housing 3, which by means of a annular flange 4 e.g. to the air conveying path of a cylindrical one Reactor or a cylindrical muffle furnace attached becomes.
  • the mixing head 1 also has an inlet of a fluid admixture on one end of the housing 3.
  • the rotor 2 has two vane rings or impeller wheels arranged one behind the other in the axial direction, which consist of fixed vane rings. in order to generate both an axial flow by means of axial blades 5 and a radial flow for mixing by means of radial blades 7.
  • the radial blades 7 are arranged in a radial blade ring 6 and, like the axial blades 5, are fastened to a common hub 8 and a shaft 9a driven by a motor 9.
  • the axial blades 5 are arranged immediately after the addition of the fluid admixture, this fluid being introduced into the mixing head 1 by means of admixing nozzles 17 , 18.
  • the blades 5 and 7 are designed to be interchangeable, for example releasably fastened to the handle 8 by plug connections.
  • the radial blades 7 can have different cross sections, for example a triangular shape, a platform or an oval shape, as is indicated in FIG. 1 by the different cross sections in the one radial blade 7.
  • the material selection of blades 5 and 7 depends on the media to be mixed.
  • the blades 5 of the axial blade ring 4 are inclined, the inclination being dependent on the quantity of the medium to be drawn in to be conveyed.
  • the length and width of the axial blades 5 are also variable, that is to say 8 axial blades 5 of greater width and / or length can be used on the handle if a larger flow rate is to be generated.
  • the radial blades 7 can deviate from a smooth surface for better mixing and can therefore be perforated or ribbed.
  • This housing 10 forms, by means of a conical or semi-conical deflection hood 10 in front of the rotor 2 in the center, a backflow premixer which is provided on its inner side facing the rotor 2 with guide elements 11 which are curved radially outward in the direction of rotation. These guide elements 11 already redirect the mixed medium flowing back in the axial direction in the direction of rotation of the flowing medium in order to support the renewed process of rotation of the medium on the radial blades 7.
  • the deflection hood 10 is preferably designed as a conical or hemispherical spherical cap, the diameter of which depends on the environment in which it is used and on the media to be mixed.
  • the deflection hood 10 can also be larger in diameter than the radial blade ring 6 be formed.
  • An outlet 12 for the fluid mixture or gas mixture is preferably designed as a lateral gap, if the deflection hood 10 is larger in radius than the radial blade ring 6. If the deflection hood 10 is smaller in radius than the radial blade ring 6, the outlet 12 is preferably designed as an annular gap, wherein there to improve the outflow, e.g. with very tough media Guide vanes 16 can be arranged.
  • the deflection hood 10 is preferably fixed by columns 13, which at the same time are provided as conduits 15 for cooling.
  • a coolant can be water or Thermal oil can be used.
  • Nozzles are located outside the circumferential area of the radial blade ring 6 14 provided for the supply of liquid additives. Through the outer ends of the radial blades 7 immediately become a liquid mist torn apart and mixed with the gas stream.
  • the nozzles 14 are aligned tangentially to the plane of rotation, to make optimal use of the suction of the rotating medium. On the other hand can be done by rotating the nozzles from a tangential to a more radial alignment a throttling or regulation of the supplied Additives are caused.
  • the nozzles are preferably 14 protected by tubular nozzle nozzles that cool the nozzles 14 can be connected to the line pipes 15.
  • liquids under high pressure e.g. liquid fuel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP95917251A 1994-05-31 1995-05-18 Mischkopf zum mischen von fluiden, insbesondere gasen und/oder flüssigkeiten Expired - Lifetime EP0713422B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1700/94 1994-05-31
CH170094 1994-05-31
PCT/CH1995/000111 WO1995032794A1 (de) 1994-05-31 1995-05-18 Mischkopf zum mischen von fluiden, insbesondere gasen und/oder flüssigkeiten

Publications (2)

Publication Number Publication Date
EP0713422A1 EP0713422A1 (de) 1996-05-29
EP0713422B1 true EP0713422B1 (de) 1998-08-26

Family

ID=4216562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95917251A Expired - Lifetime EP0713422B1 (de) 1994-05-31 1995-05-18 Mischkopf zum mischen von fluiden, insbesondere gasen und/oder flüssigkeiten

Country Status (8)

Country Link
US (1) US5702646A (es)
EP (1) EP0713422B1 (es)
AT (1) ATE170099T1 (es)
CA (1) CA2168361A1 (es)
DE (1) DE59503328D1 (es)
DK (1) DK0713422T3 (es)
ES (1) ES2122591T3 (es)
WO (1) WO1995032794A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6325362B1 (en) * 1999-05-26 2001-12-04 Raymond O. Massey Cooling and misting apparatus for evaporative cooling of open-air vehicle occupants
JP2002070794A (ja) * 2000-09-01 2002-03-08 Minebea Co Ltd 軸流式送風機の羽根車

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US43686A (en) * 1864-08-02 Improvement in churns
US1351352A (en) * 1920-03-11 1920-08-31 Stevens Brothers Emulsifier
US1720549A (en) * 1925-06-19 1929-07-09 William A Gilchrist Apparatus for and process of mixing
US1725279A (en) * 1928-06-23 1929-08-20 Anglo American Mill Company Feed mixer
US2092992A (en) * 1935-08-19 1937-09-14 Daniel E Thalman Emulsifying apparatus
BE471893A (es) * 1946-03-15
FR1001644A (fr) * 1946-06-13 1952-02-26 Appareil mélangeur
FR988089A (fr) * 1949-04-12 1951-08-22 Dispositif pour la pulvérisation d'un liquide dans un courant gazeux
US3179380A (en) * 1959-11-02 1965-04-20 Dow Chemical Co Apparatus for coagulation of colloidal dispersions
US3293117A (en) * 1963-03-27 1966-12-20 Improved Machinery Inc High density pulp mixing
US3358413A (en) * 1966-12-28 1967-12-19 Combustion Eng Wet scrubber for dirty gases
NL6704454A (es) * 1967-03-29 1968-09-30
BR7401518D0 (pt) * 1973-03-02 1974-12-24 Stronc Scott Mfg Co Aparelho misturador aperfeicoado e processo aperfeicoado para tratamento de areia de fundicao
US3924837A (en) * 1974-12-23 1975-12-09 Upjohn Co Agitator insert for reactive liquid polymer mixer
EP0223907B1 (en) * 1985-11-28 1991-08-07 Matsushita Electric Industrial Co., Ltd. Multiple fluid mixing apparatus

Also Published As

Publication number Publication date
DE59503328D1 (de) 1998-10-01
US5702646A (en) 1997-12-30
ES2122591T3 (es) 1998-12-16
ATE170099T1 (de) 1998-09-15
DK0713422T3 (da) 1999-05-25
WO1995032794A1 (de) 1995-12-07
EP0713422A1 (de) 1996-05-29
CA2168361A1 (en) 1995-12-07

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