US3249340A - Mixing and emulsifying apparatus - Google Patents

Mixing and emulsifying apparatus Download PDF

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Publication number
US3249340A
US3249340A US37252A US3725260A US3249340A US 3249340 A US3249340 A US 3249340A US 37252 A US37252 A US 37252A US 3725260 A US3725260 A US 3725260A US 3249340 A US3249340 A US 3249340A
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United States
Prior art keywords
blades
housing
impeller
vanes
clearance
Prior art date
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Expired - Lifetime
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US37252A
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English (en)
Inventor
Pinto Uberto
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Individual
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Individual
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    • 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
    • B01F27/91—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with propellers
    • 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
    • B01F27/805—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle
    • B01F27/806—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle with vertical displacement of the stirrer, e.g. in combination with means for pivoting the stirrer about a vertical axis in order to co-operate with different receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/86—Mixing heads comprising a driven stirrer
    • B01F33/862—Mixing heads comprising a driven stirrer the stirrer being provided with a surrounding stator
    • 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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/15—Stirrers with tubes for guiding the material

Definitions

  • This invention relates to apparatus for mixing together two liquid phases, or a solid phase and a liquid phase, to produce an intimately mixed liquid suspension or emulsion.
  • Such apparatus can also of course be used where one phase is more or less soluble in the other. From here on the phases before and during such treatment are spoken of simply as a material to be mixed or emulsified.
  • the invention more particularly relates to mixing and emulsifying apparatus of the type which can be immersed in material to be mixed in a tank, so that in operation it draws in the material to be mixed, subjects it to a shearing action and passes it back free from swirl or vortex, into the main volume of material with the aid, when necessary, of a deflector plate.
  • the invention consists in a mixing and emulsifying apparatus in which the inner surface of the impeller housing is frusto-conical and surrounds a bladed, rotary, centrifugal imlpeller with a clearance fi-t, the blades on this impeller having generatrices parallel to the axis of rotation so that in operation material is drawn in axially into a circular inlet at the narrow end of, and passed out between radially'extending non-rotary vanes at the broad end of the housing.
  • the invention further consists in an apparatus in which the vanes are surrounded by a cylindrical extension of the housing.
  • the invention relates particularly to a mixing and emulsifying apparatus in which the bladed centrifugal impeller, rota-ting at high speed, is characterised by blades whose gencratices are parallel to the axis of the impeller therefore subjecting the material to a continually increasing centrifugal force by virtue of increasing diameter of the impeller blades and small clearance between the blades and the internal surface of the housing.
  • FIGURE 1 is a side view of a mixing and emulsifying apparatus with its head suspended in a tank of liquid.
  • FIGURE 2 is a section on the line 2--2. of FIGURE '1.
  • FIGURE 3 is a section on the line 3-3 of FIGURE 4.
  • FIGURE 4 is a section on the line 44 of FIGURE 3.
  • FIGURES 5 and 6 correspond to FIGURES 3 and 4 and show a modified mixer head which can be substituted for the head of FIGURES 1 to 4.
  • FIGURE 5 is a section on the line 55 of FIGURE 6.
  • the apparatus (as shown in FIGURES 2-4) features a vane assembly denoted by the general reference numeral 4 comprised in the cylindrical upper part of a housing 5, on which this housing is mounted with a pushfit and held against axial and vertical movement by two screws 6.
  • the housing 5 has a frusto-conical lower part open at its narrow end which forms the inlet of the mixer head.
  • the vane assembly 4 which is in the outlet of the apparatus has a plurality of axially extending vanes 4', of even thickness.
  • the shaft 1 passes into and extends below vane assembly 4 and has fixed to its lower end a rotary impeller, denoted by the general reference numeral 7 by a nut 8.
  • the impeller has a plurality of blades such as 7' of equal thickness which are backwardly curved as regards radial section, that is to say, curved away from their direction of rotation.
  • the vanes 4' and 4" lie in the opposite direction i.e. are curved forwards.
  • the generatrices of the blades 7' and vanes 4' and 4" are parallel to the axis of the impeller.
  • the impeller is of frusto-conical shape and there is a clearance fit between it and the housing 5 and between it and the vanes 4' and 4".
  • the blades extend below the nut 8 to form exposed surfaces with an open centre and whose inner profile is frusto-conical in the reverse direction to the outer main profile of the impeller.
  • the mixer head (as shown in FIGURE 1) is connected with an electric motor 16 by the shaft 1 and by the struts or rods 3 so as to form a complete unit.
  • the lower ends of the rods 3, as already said, are tapped and screwed into holes in the vanes 4".
  • the shaft 1 is made in two sections connected together by a threaded sleeve 14, so that its length can be varied for adjustment of the clearance between the impeller 7 and vanes 4.
  • a lock nut 13 is also provided for this, and also for preventing rotation of the lower part of the shaft in relation to the upper part when the mixer is in use.
  • the rods 3 are attached at their upper ends to a coupling flange 15 which is bolted to the motor 16.
  • the whole apparatus is suspended from a wall bracket 18 by means of a wire cable 17 and a counter-weight 9.
  • a deflector plate 11 having a concave lower surface is slidably mounted on the rods 3 and can be locked in position by a wing bolt 12.
  • the apparatus is immersed in material to be mixed in a tank 10'.
  • the material is halted in its rotary movement and is ejected with great force from between the nonrotary vanes 4' axially and free from vortex up against the lower concave surface of the deflector plate 11 which compels it to flow downwards in a cylindrical stream between the housing 5 and the tank 10, to be drawn again into the mixer head through the inlet at the lower or narrow end of the housing 5.
  • the material is thus maintained in a continuous vertical cycle of movement.
  • the upper cylindrical part of the housing 5 is thus seen to constitute also a guide for causing the flow from the housing to be axial, cooperating with vanes 4'.
  • the vane assembly 4' has an outer concentric ring 4" which is screwed into a female thread in the cylindrical part of the housing 5.
  • the housing can be locked in rotation by means of a screw 6' which can be screwed into any one of a number of radial slots in it.
  • Rotation of the housing 5 about the vane assembly enables the clearance between the inner surface of said housing and the outer profile of the impeller to be altered while the clearance between the impeller and the vanes 4 can be altered by loosening the lock nut 13 and turning the two parts of the shaft in relation to one another.
  • a mixing and emulsifying apparatus comprising a hollow housing open at opposite ends, said housing having a frusto-conical inner surface converging downwardly, a rotary impeller received in said housing, said impeller comprising a plurality of angularly spaced radially extending blades having their generatrices parallel to the axis of said impeller, substantially the entire length of the outer edges of said .blades conforming to the inner surface of said housing and having a close clearance fit therewith, the spaces between said blades being open along the entire periphery of the impeller and being open at the opposite ends to provide unobstructed axial passages for the axial flow of material through said impeller between said blades and the wider ends of said blades terminating in the same plane, a plurality of angularly space-d radially extending vanes disposed at the wider end of said housing with the radial edges of said vanes adjacent the widerends of said blades spaced therefrom to provide a close working clearance, a shaft fixed to said
  • a mixing and emulsifying apparatus as defined in claim 1 in which said blades are curved away from the direction of rotation of said impeller.
  • a mixing and emulsifying apparatus as defined in claim 1 in which means is associated with said shaft for adjusting the clearance between said inner surface and the outer edges of said blades and between the radial edges of said vanes and the adjacent radial edges of said blades.
  • a mixing and emulsifying apparatus as defined in claim 4 in which said means comprises means disposed between said motor and impeller for adjusting the length of said shaft, whereby the position of said impeller with respect to said inner surface and said vanes may be adjnsted.
  • a mixing and emulsifying apparatus as defined in claim 1 in which meansis associated with said housing for adjusting the clearance between said inner surface and the outer edges of said blades.
  • a mixing and emulsifying apparatus as defined in claim 6 in which said means comprises screw threads connecting said housing and said vanes, whereby upon rotation of said housing with respect to said vanes the inner surface of said housing will be moved toward or away from the outer edges of said blades.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
US37252A 1959-07-15 1960-06-20 Mixing and emulsifying apparatus Expired - Lifetime US3249340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1185159 1959-07-15

Publications (1)

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US3249340A true US3249340A (en) 1966-05-03

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ID=11138278

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US37252A Expired - Lifetime US3249340A (en) 1959-07-15 1960-06-20 Mixing and emulsifying apparatus

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US (1) US3249340A (da)
CH (1) CH366269A (da)
DK (1) DK113424B (da)
GB (1) GB915047A (da)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3330536A (en) * 1965-01-30 1967-07-11 Efstathiou Evangelos Suds producing device
US3369596A (en) * 1963-05-16 1968-02-20 Jorgen Hagerup Maeland Apparatus for heating, homogenizing, and cooling ice cream
US3738773A (en) * 1971-10-20 1973-06-12 Tait Mfg Co Bladeless pump impeller
US3791797A (en) * 1971-12-20 1974-02-12 V Yuen Method for purifying mercury
US3861655A (en) * 1972-02-10 1975-01-21 Winn & Coales Denso Ltd Device for mixing apparatus
US3889931A (en) * 1974-04-12 1975-06-17 J W Greer Inc Homogenizer-mixer
US20040160856A1 (en) * 2003-02-14 2004-08-19 Weetman Ronald J. Mixing vessel apparatus and method
US20110103951A1 (en) * 2008-03-05 2011-05-05 Alstom Hydro France Francis-type hydraulic turbine wheel equipped with a tip-forming member, and method of reducing fluctuations using such a wheel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH604861A5 (da) * 1974-05-10 1978-09-15 Hiroyuki Iwako
DE2938177C2 (de) * 1979-09-21 1984-01-05 Maschinen-GmbH Otto Hölz, 7988 Wangen Rührgerät für Gülle und dgl. Medien
US5624999A (en) * 1991-03-05 1997-04-29 Exxon Chemical Patents Inc. Manufacture of functionalized polymers
DE4332977A1 (de) * 1993-09-28 1995-03-30 Draiswerke Gmbh Reib-Mühle und deren Verwendung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1795588A (en) * 1927-10-13 1931-03-10 Goodrich Co B F Impelling apparatus
US2267341A (en) * 1940-11-01 1941-12-23 Lawrence Pump And Engine Co Mixer
US2421191A (en) * 1944-02-02 1947-05-27 Lewis H Durdin Mechanical aerating device
US2706622A (en) * 1952-11-25 1955-04-19 Staaf Gustaf Adolf Mixing or stirring apparatus
GB777271A (en) * 1954-12-08 1957-06-19 Uberto Pinto An improved mixing and emulsifying apparatus
US2801083A (en) * 1953-01-07 1957-07-30 Leslie L Balassa Mixing device
US2859259A (en) * 1955-05-31 1958-11-04 Kellogg M W Co Alkylation of hydrocarbons

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1795588A (en) * 1927-10-13 1931-03-10 Goodrich Co B F Impelling apparatus
US2267341A (en) * 1940-11-01 1941-12-23 Lawrence Pump And Engine Co Mixer
US2421191A (en) * 1944-02-02 1947-05-27 Lewis H Durdin Mechanical aerating device
US2706622A (en) * 1952-11-25 1955-04-19 Staaf Gustaf Adolf Mixing or stirring apparatus
US2801083A (en) * 1953-01-07 1957-07-30 Leslie L Balassa Mixing device
GB777271A (en) * 1954-12-08 1957-06-19 Uberto Pinto An improved mixing and emulsifying apparatus
US2859259A (en) * 1955-05-31 1958-11-04 Kellogg M W Co Alkylation of hydrocarbons

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3369596A (en) * 1963-05-16 1968-02-20 Jorgen Hagerup Maeland Apparatus for heating, homogenizing, and cooling ice cream
US3330536A (en) * 1965-01-30 1967-07-11 Efstathiou Evangelos Suds producing device
US3738773A (en) * 1971-10-20 1973-06-12 Tait Mfg Co Bladeless pump impeller
US3791797A (en) * 1971-12-20 1974-02-12 V Yuen Method for purifying mercury
US3861655A (en) * 1972-02-10 1975-01-21 Winn & Coales Denso Ltd Device for mixing apparatus
US3889931A (en) * 1974-04-12 1975-06-17 J W Greer Inc Homogenizer-mixer
US20040160856A1 (en) * 2003-02-14 2004-08-19 Weetman Ronald J. Mixing vessel apparatus and method
US6808306B2 (en) * 2003-02-14 2004-10-26 Spx Corporation Mixing vessel apparatus and method
US20110103951A1 (en) * 2008-03-05 2011-05-05 Alstom Hydro France Francis-type hydraulic turbine wheel equipped with a tip-forming member, and method of reducing fluctuations using such a wheel
US8894366B2 (en) * 2008-03-05 2014-11-25 Alstom Renewable Technologies Francis-type hydraulic turbine wheel equipped with a tip-forming member, and method of reducing fluctuations using such a wheel

Also Published As

Publication number Publication date
DK113424B (da) 1969-03-24
GB915047A (en) 1963-01-09
CH366269A (fr) 1962-12-31

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