EP0713422A1 - Tete melangeuse de fluides, notamment de gaz et/ou de liquides - Google Patents

Tete melangeuse de fluides, notamment de gaz et/ou de liquides

Info

Publication number
EP0713422A1
EP0713422A1 EP95917251A EP95917251A EP0713422A1 EP 0713422 A1 EP0713422 A1 EP 0713422A1 EP 95917251 A EP95917251 A EP 95917251A EP 95917251 A EP95917251 A EP 95917251A EP 0713422 A1 EP0713422 A1 EP 0713422A1
Authority
EP
European Patent Office
Prior art keywords
mixing head
blades
mixing
housing
head 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
EP95917251A
Other languages
German (de)
English (en)
Other versions
EP0713422B1 (fr
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
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0713422A1 publication Critical patent/EP0713422A1/fr
Application granted granted Critical
Publication of EP0713422B1 publication Critical patent/EP0713422B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

  • Mixing head for mixing fluids, especially gases and / or liquids
  • the invention relates to a mixing head for mixing fluids, in particular gases and / or liquids in a hot or cold environment.
  • a blower wheel is known from EP-0 344 498 A2, chain-like link elements for generating a rotating gas flow being proposed as an alternative to commonly used blade or blower wheels rotating in a housing.
  • the blower described there takes place particularly in the pneumatic conveyance of dusts, chips and chips, such as those found in wood and
  • the chain-like link elements in particular serve to reduce the cleaning work on the blower, especially when the gas to be conveyed is very dusty.
  • an impact surface be provided against the drive side, which prevents the inflowing gases from escaping centrally axially. This ensures that the gas flow has to get into the orbit of the rotating link chains on its way through the blower, so that there is an intermixing of the gas flow, in particular by eddies on the chain-like link elements.
  • Such movable, chain-like link elements can, however, tear off or jam each other, particularly in the starting phase of the rotational movement.
  • this link head When this link head is installed vertically, there is also a considerable load on the engine bearings in the starting phase until the chain rings have opened flatly, since the chain rings cause a large imbalance until they are fully open.
  • EP-0 473 618 B1 describes a similar blower, which has a blower wheel with a central hub and attached, mutually movable elements in the form of chain pieces, in order to produce a screw or screw-shaped gas flow in a device for burning bio or solid masses achieve.
  • EP-0 525 711 A2 also relates to a device for burning bio or solid matter with a channel and a similar link head blower, the mouth of which is directed into the interior of a gas or fire pipe.
  • a mixing device that supplies an axial air flow against the flow direction of a wide-area, helically rotating gas flow is also known from EP-A-0 340 859 A1. Just as with the known mixing devices, however, there is an inadequate or missing setting option with regard to changing mixing components.
  • This object is achieved by a mixing head in which axial blades are arranged in front of the radial blades in the direction of flow. In this way, it is achieved that both an axial suction of the fluid to be conveyed and a radial acceleration are achieved, which results in intensive swirling.
  • a second gas component can thus be supplied through an admixing nozzle arranged on the end face, suction being carried out by means of the axial vane ring, which means that the mixing device can also be used in systems which are not operated under negative pressure , ie essentially on the peripheral lateral surface of the mixing head housing, several nozzles can be provided, for example for admixing liquid additives, so several components can be admixed to the carrier fluid, generally air.
  • an inventive / mashing head 1 essentially comprises a rotor 2 and a housing 3, which by means of an annular flange 4 z. B. is attached to the air conveying path a cylindrical reactor or a cylindrical muffle furnace.
  • the rotor 2 has two blade rings or blower wheels arranged one behind the other in the axial direction 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 blades 5 and 7 are designed to be interchangeable, e.g. releasably attached to the hub 8 by plug connections.
  • the radial blades 7 can have different cross sections, for example a triangular shape, a platform or an oval shape.
  • 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 set obliquely, the inclination being based on the quantity of the medium to be sucked to be conveyed.
  • the length and width of the axial blades 5 are also variable, i. H. It is possible to use axial blades 5 with a greater width and / or length on the hub 8 if a larger conveying flow is to be generated.
  • the radial blades 7 can deviate from a smooth surface for better mixing and can therefore be perforated or ribbed.
  • the housing 3 forms, through a conical or hemispherical deflection hood 10 in front of the rotor 2 in the center, a backflow premixer, which is provided on its inside facing the rotor 2 with guide elements 11 curved radially outward in the direction of rotation. These guide elements 11 direct the mixed medium flowing back in the axis direction and ready in the direction of rotation of the medium flowing through um in order to support the renewed rotation process 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.
  • An outlet 12 for the fluid mixture or gas mixture is preferably formed 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 formed as an annular gap. where there to improve the outflow, for. B. with very viscous 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 conduit pipes 15 for cooling. Depending on the respective general conditions, water or thermal oil can be used as the coolant.
  • nozzles 14 are provided for supplying liquid additives.
  • a liquid mist is immediately torn apart and mixed with the gas stream through the outer ends of the radial blades 7.
  • the nozzles 14 are preferably aligned tangentially to the plane of rotation in order to optimally utilize the suction of the rotating medium.
  • the nozzles can be throttled or regulated by rotating the nozzles from a tangential to a more radial orientation.
  • the nozzles 14 are preferably protected by tubular nozzle nozzles which can be connected to the line pipes 15 for cooling the nozzles 14.
  • a nozzle 14 pointing into the tip of the deflection hood 10 can also be provided, which is connected to a feed line 19 opening into the housing 3.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP95917251A 1994-05-31 1995-05-18 Tete melangeuse de fluides, notamment de gaz et/ou de liquides Expired - Lifetime EP0713422B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH170094 1994-05-31
CH1700/94 1994-05-31
PCT/CH1995/000111 WO1995032794A1 (fr) 1994-05-31 1995-05-18 Tete melangeuse de fluides, notamment de gaz et/ou de liquides

Publications (2)

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

Family

ID=4216562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95917251A Expired - Lifetime EP0713422B1 (fr) 1994-05-31 1995-05-18 Tete melangeuse de fluides, notamment de gaz et/ou de liquides

Country Status (8)

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

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 (fr) * 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 (fr) * 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
DE3680756D1 (de) * 1985-11-28 1991-09-12 Matsushita Electric Ind Co Ltd Apparat zum mischen von verschiedenen fluessigkeiten.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9532794A1 *

Also Published As

Publication number Publication date
US5702646A (en) 1997-12-30
WO1995032794A1 (fr) 1995-12-07
ATE170099T1 (de) 1998-09-15
DK0713422T3 (da) 1999-05-25
CA2168361A1 (fr) 1995-12-07
ES2122591T3 (es) 1998-12-16
EP0713422B1 (fr) 1998-08-26
DE59503328D1 (de) 1998-10-01

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