WO2015015416A1 - Tête de mélangeur et mélangeur comprenant celle-ci - Google Patents

Tête de mélangeur et mélangeur comprenant celle-ci Download PDF

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Publication number
WO2015015416A1
WO2015015416A1 PCT/IB2014/063513 IB2014063513W WO2015015416A1 WO 2015015416 A1 WO2015015416 A1 WO 2015015416A1 IB 2014063513 W IB2014063513 W IB 2014063513W WO 2015015416 A1 WO2015015416 A1 WO 2015015416A1
Authority
WO
WIPO (PCT)
Prior art keywords
mixer head
mixer
head elements
rod
passageway
Prior art date
Application number
PCT/IB2014/063513
Other languages
English (en)
Inventor
Robert Collard
Original Assignee
Services de Forage Orbit Garant Inc.
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 Services de Forage Orbit Garant Inc. filed Critical Services de Forage Orbit Garant Inc.
Publication of WO2015015416A1 publication Critical patent/WO2015015416A1/fr

Links

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
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to the shaft
    • 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
    • B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
    • B01F27/1151—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis with holes on the surface
    • 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
    • B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
    • B01F27/1155—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis with interconnected discs, forming open frameworks or cages
    • 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
    • B01F27/13—Openwork frame or cage stirrers not provided for in other groups of this subclass

Definitions

  • the present invention relates generally to the field of liquid processing. More specifically, the present invention is concerned with a mixer head and with a mixer including the same.
  • An object of the present invention is therefore to provide an improved mixer head and mixer.
  • the invention provides a mixer head for mixing a fluid, the mixer head comprising: a substantially elongated mounting rod defining a rod longitudinal axis and substantially longitudinally opposed rod proximal and distal ends; and at least two mixer head elements mounted to the mounting rod, the mixer head elements each defining substantially opposed proximal and distal end surfaces and a peripheral surface extending therebetween, the proximal end surface being closer to the rod proximal end than the distal end surface; a rod mounting portion mounted to the mounting rod; a passageway section extending therethrough between the proximal and distal end surfaces spaced apart from the peripheral surface; and an outlet extending from the passageway section to the peripheral surface.
  • the passageway section is provided between the mounting portion and the peripheral surface.
  • the mixer head elements are mountable to the mounting rod in at least two different configurations, the passageway sections of the at least two mixer head elements at least partially overlapping each other in each of the configurations with an overlapping relationship that differs between the configurations.
  • the at least two mixer head elements include a plurality of mixer head elements mounted to the mounting rod so as to form a stack of mixer head elements, the passageway sections of adjacent ones of the mixer head elements being at least partially overlapping and in a fluid communication relationship with each other.
  • the mixer head elements are stacked so that the adjacent ones of the mixer head elements abut against each other.
  • the mixer head elements each define at least two circumferentially spaced apart passageway sections.
  • the mixer head elements each define at least two circumferentially spaced apart outlets extending from a respective one of the passageway sections to the peripheral surface.
  • At least one of the passageway sections is an enclosed passageway section deprived of any outlet that extends therefrom and that reaches the peripheral surface and the passageway section from which the outlet extends is an open passageway section.
  • the open passageway section of one of the mixer head elements at least partially overlaps and is in a fluid communication relationship with only enclosed passageway sections in adjacent ones of the mixer head elements.
  • the mixer head elements each define recesses in the peripheral surface between adjacent ones of the passageway sections.
  • the outlets also extend from the proximal surface to the distal surface.
  • the mixer head elements are positionable so that the passageway sections all have substantially similar transversal cross-sectional configurations.
  • passageway sections of adjacent ones of the mixer head elements completely overlap so that they together form at least one rectilinear passageway.
  • the mixer head elements are positionable so that passageway sections of adjacent ones of the mixer head elements are only partially overlapping so that they together form at least one helicoidal passageway.
  • the passageway sections have a substantially teardrop shaped transversal cross-sectional configuration.
  • the passageway sections have a substantially circular transversal cross-sectional configuration.
  • the mixer head further comprises a lock for securing the mixer head elements to the mounting rod, the lock being movable between locked and unlocked configurations, wherein, in the locked configuration, the mixer head elements are fixed relative to mounting rod, and, in the unlocked configuration, the mixer head elements are freely rotatable about the mounting rod.
  • the mounting rod is provided with threads substantially adjacent the rod distal end, the lock including a shoulder facing the rod distal end defined by the mounting rod between the rod proximal and distal ends and a nut screwable on the threads, the mixer head elements being mounted to the rod between the nut and the shoulder, the lock being in the locked configuration when the nut is screwed on the threads so that the mixer head elements are compressed between the nut and the shoulder and the lock being in the unlocked configuration when the nut is at least partially unscrewed from the threads so that the mixer head elements are rotatable about the mounting rod independently from each other.
  • the mixer head elements include end mixer head elements and intermediate mixer head elements provided therebetween, the intermediate mixer head elements being substantially plate shaped.
  • the end mixer head elements include a proximal end mixer head element having a curved proximal end surface and a distal end mixer head element having a curved distal end surface.
  • the end mixer head elements include a proximal end mixer head element having a substantially frusto-conical proximal end surface and a distal end mixer head element having a substantially frusto-conical distal end surface.
  • the proximal end mixer head element has a substantially flat distal end surface and the distal end mixer head element has a substantially flat proximal end surface.
  • the mounting portion defines a mounting aperture through which the mounting rod is insertable.
  • the mixer head elements have a substantially hexagonal transversal cross-sectional configuration.
  • the mixer head elements are removably mounted to the mounting rod.
  • the invention provides a mixer, the mixer comprising: motor; and mixer head as described above, the mounting rod being mounted to the motor so as to be rotatable about the mounting rod longitudinal axis thereby.
  • the proposed mixer head elements allow the assembly of mixer heads suitable for mixing many different quantities of fluid having many different hydrodynamic properties by selecting a suitable number of plates and the relationship therebetween.
  • the proposed mixer is relatively inexpensive to manufacture using known materials and methods.
  • Figure 1 in a perspective view, illustrates a mixer in accordance with an embodiment of the present invention, the mixer being shown with a mixer head thereof including mixer head elements in a first configuration;
  • Figure 2 in a perspective view, illustrates the mixer shown in Fig. 1 , the mixer being shown with the mixer head elements in a second configuration;
  • Figure 3 in a perspective view, illustrates a mixer head element part of the mixer shown in Figs. 1 and 2;
  • Figure 4 in a top plan view, illustrates the mixer head element shown in Fig. 3;
  • Figure 5 in a side elevation view, illustrates the mixer head element shown in Figs. 3 and 4;
  • Figure 6 in a perspective view, illustrates an end mixer head element part of the mixer shown in Figs. 1 and 2;
  • Figure 8 in a side elevation view, illustrates the end mixer head element shown in Figs. 6 and 7;
  • Figure 9 in a perspective view, illustrates a mounting rod part of the mixer shown in Figs. 1 and 2;
  • Figure 10 in a top plan view, illustrates an alternative mixer head element usable in a mixer similar to the mixer shown in Figs. 1 and 2.
  • a mixer 10 for mixing a fluid (not shown in the drawings).
  • the mixer 10 includes a motor 14 (shown in schematic form in the drawings) and a mixer head 24.
  • the mixer head 24 includes a substantially elongated mounting rod 16 defining a rod longitudinal axis 18 and mixer head elements 32 and 34, described in further detail hereinbelow, mounted to the mounting rod 16.
  • the mounting rod 16 is mounted to the motor 14 so as to be rotatable about the rod longitudinal axis 18 thereby.
  • the motor 14 is any suitable motor 14, for example an electrical or gas powered motor 14.
  • the rotation speed of the motor 14 is controllable using conventional controls.
  • the rotation speed of the motor 14 is fixed and only an on/off switch is provided to control its operation.
  • the term "substantially” is used throughout this document to indicate variations in the thus qualified terms. These variations are variations that do not materially affect the manner in which the invention works and can be due, for example, to uncertainty in manufacturing processes or to small deviations from a nominal value that do not cause significant changes to the invention. These variations are to be interpreted from the point of view of the person skilled in the art. Also, directional terminology is used as follows.
  • proximal refers to elements that are closer to the motor 14 than elements qualified by the term “distal”.
  • longitudinal refers to a direction along the rod longitudinal axis 18 and the term “transversal” refers to a plane perpendicular to the rod longitudinal axis 18.
  • radial refers to a direction in the transversal plane that extends away from the rod longitudinal axis 18 and “circumferential” refers to a direction in the transversal plane that that turns around the rod longitudinal axis 18.
  • the longitudinal, radial and circumferential directions therefore form a cylindrical coordinate system used to describe the mixer 10.
  • the mounting rod 16 is typically of circular transversal cross-sectional configuration, but other configurations, such as for example a polygonal configuration, are within the scope of the invention.
  • the mounting rod 16 defines a rod proximal end 20 and a substantially longitudinally opposed rod distal end 22.
  • the mounting rod 16 is secured adjacent the rod proximal end 20 to the motor 14.
  • the mixer head elements 32 and 34 are mounted to the mounting rod 16 typically substantially adjacent the rod distal end 22.
  • the mounting rod 16 typically defines threads 30 substantially adjacent the rod distal end 22.
  • the threads 30 extend from the rod distal end 22 along a portion of the mounting rod 16, but embodiments in which the threads 30 extend along the whole mounting rod 16 are within the scope of the invention.
  • the mounting rod 16 typically defines a shoulder 31 facing the rod distal end 22 at a location intermediate the rod proximal and distal ends 20 and 22, as seen in Fig. 9.
  • the threads 30 are for screwing a nut 28 thereonto to secure the mixer head elements 32 and 34 to the mounting rod 16 when one of the mixer head elements 32 and 34 abuts against the shoulder 31 and the nut 28 is threaded on the threads 30 until the mixer head elements 32 and 34 are firmly held between the nut 28 and the shoulder 31 .
  • a washer 33 is provided between the mixer head elements 32 and 34 and the nut 28. Also, when a number of mixing head elements 32 and 34 that is mounted to the mounting rod 16 is not sufficient to allow securing the mixing head elements 32 and 34 using the nut 28 only, additional washers 33 or similar spacers can be inserted between the proximalmost mixer head element 32 and 34 and the shoulder 31 to fill out of the space therebetween.
  • the shoulder 31 and the nut 28 therefore form a lock for securing the mixer head elements 32 and 34 to the mounting rod 16.
  • the lock is movable between locked and unlocked configurations. In the locked configuration, the mixer head elements 32 and 34 are fixed relative to mounting rod 16, and, in the unlocked configuration, the mixer head elements 32 and 34 are freely rotatable about the mounting rod 16.
  • the lock is in the locked configuration when the nut 28 is screwed on the mounting rod 16 so that the mixer head elements 32 and 34 are compressed between the nut 28 and the shoulder 31.
  • the lock is in the unlocked configuration when the nut 28 is at least partially unscrewed from the threads 30 so that the mixer head elements 32 and 34 are rotatable about the mounting rod 16 independently from each other.
  • the mixer head 24 includes at least two mixer head elements 32 and 34 mountable to the mounting rod 16. When more than two mixer head elements 32 and 34 are provided, they include end mixer head elements 34 between which intermediate mixer head elements 32 are sandwiched.
  • the present document uses the terminology “mixer head elements 32 and 34" to refer to any of the end mixer head elements 34 and intermediate mixer head elements 32, a more specific terminology being used when necessary.
  • the adjectives proximal or distal are used.
  • the intermediate mixer head elements 32 are typically substantially plate shaped, but other configurations are also within the scope of the invention. As better seen in Figs. 3 and 4, the intermediate mixer head elements 32 each define a rod mounting portion 36 mountable to the mounting rod 16, a peripheral surface 40, at least one passageway section 46 extending therethrough spaced apart from the peripheral surface 40, and at least one outlet 48 extending from at least one of the passageway sections 46 to the peripheral surface 40.
  • the passageway sections 46 are typically provided between the rod mounting portion 36 and the peripheral surface 40 and typically also all have substantially similar transversal cross-sectional configurations, but this is not necessarily the case in all embodiments of the invention.
  • the rod mounting portion 36 may include part of the passageway sections 46 and the mixer head elements 32 and 34 may be mounted to a plurality of rods extending through the passageway sections 46.
  • the mixer head elements 32 and 34 each define at least two circumferentially spaced apart passageway sections 46 and the intermediate mixer head elements 32 each define at least two circumferentially spaced apart outlets 48 extending from a respective one of the passageway sections 46 to the peripheral surface 40.
  • only part of the passageway sections 46 are provided with an outlet 48, but in other embodiments all the passageway sections 46 are provided with an outlet 48.
  • the passageway sections 46 deprived of any outlet 48 that extends therefrom and that reaches the peripheral surface 40 are referred to as enclosed passageway sections 46 and the passageway sections from which the outlets 48 extend are referred to as open passageway sections 46.
  • the mixer head 24 when enclosed passageway sections 46 are present, the mixer head 24 may be assembled such that at least one open passageway section 46 of one of the intermediate mixer head elements 32 at least partially overlaps and is in a fluid communication relationship with only enclosed passageway sections 46 in adjacent ones of the mixer head elements 32 and 34.
  • the outlets 48 are thus as small as possible, which limits the flow of fluid therethrough, as opposed to a case in which outlets 48 of adjacent intermediate mixer head elements 32 would be in register with each other.
  • each intermediate mixer head element 32 is substantially plate shaped, as seen in Figs. 4 and 5.
  • the intermediate mixer head elements 32 are also typically substantially identical, although this is not necessarily the case in other embodiments of the invention.
  • the intermediate mixer head elements 32 define opposed proximal and distal surfaces 42 and 44 (the latter being only shown in Figs. 3 and 5), between which the peripheral surface 40 extends.
  • the proximal and distal surfaces 42 and 44 face respectively the rod proximal and distal ends 20 and 22 when the intermediate mixer head elements 32 are mounted to the mounting rod 16.
  • the passageway sections 46 extend through the intermediate mixer head elements 32 between the proximal and distal end surfaces 42 and 44 spaced apart from the peripheral surface 40.
  • the outlets 48 also typically extend from the proximal surface 42 to the distal surface 44, but this is not necessarily the case in all embodiments of the invention.
  • the intermediate mixer end elements 32 are substantially plate shaped, the proximal surface 42 and the distal surface 44 are substantially parallel to each other and substantially flat.
  • each mixer head element 32 and 34 has a substantially hexagonal transversal configuration. However, other configurations are within the scope of the invention.
  • Each mixer head element 32 and 34 defines six passageway sections 46 each extending between the proximal and distal surfaces 42 and 44 and located radially outwardly relative to the rod mounting portion 36.
  • the rod mounting portion 36 defines a mounting aperture 38 through which the mounting rod 16 is mountable extending between the proximal and distal surfaces 42 and 44 and located at the center of the mixer head element 32.
  • the mixer head 24 includes a plurality of intermediate mixer head elements 32 mounted to the mounting rod 16 so as to form a stack of mixer head elements 32.
  • the passageway sections 46 of adjacent ones of the intermediate mixer head elements 32 are at least partially overlapping and in a fluid communication relationship with each other.
  • the intermediate mixer head elements 32 are stacked so that adjacent ones of the intermediate mixer head elements 32 abut against each other.
  • each passageway section 46 has a substantially teardrop shaped transversal cross-sectional configuration, with the more acutely angled portion thereof tapering in a direction leading towards the mounting aperture 38.
  • the end of each passageway section 46 adjacent the mounting aperture 38 is however not pointed, as in a real teardrop, but is instead rounded for ease of manufacturing. This shape has been found useful in manufacturing passageway sections 46 that are as large as possible while keeping manufacturing easy and keeping the rigidity of the mixer head 24 suitable for its intended purpose.
  • the peripheral surface 40 bulges outwardly adjacent the radially outwardmost portion of the passageway sections 46 relative to the adjacent portions of the peripheral surface 40.
  • the mixer head elements 32 and 34 then each define recesses 41 in the peripheral surface 40 between adjacent ones of the passageway sections 46. This configuration enhances the mixing action of the mixer head 24 as it allows better coupling between the fluid to mix and the mixer head 24.
  • the end mixer head elements 34 are similar to the intermediate mixer head elements 32, except that one of the proximal and distal surfaces 42a and 44a thereof, the one facing away from the intermediate mixer head elements 32, is curved, in the present case frusto-conical, instead of being flat (in the drawings, it is the proximal surface 42 that is frusto- conical). Also, the end mixer head elements 34 are typically not provided with the outlets 48. It is also within the scope of the invention to use only similar mixer head elements 32 and 34 so that the end mixer head elements 34 are similar to the intermediate mixer end elements 32.
  • the mixer head elements 32 and 34 are mountable to the mounting rod 16 in at least two different configurations, the passageway sections 46 of the mixer head elements 32 and 34 at least partially overlapping each other in each of the configurations with an overlapping relationship that differs between the configurations.
  • the overlapping relationship between passageway sections 46 in adjacent mixer head elements 32 and 34 can be varied. This overlapping relationship is defined as the fraction of a passageway section 46 that is in register with a passageway section 46 in an adjacent mixer head elements 32 and 34, as opposed to being in register with the solid portion of proximal or distal surfaces 42 and 44.
  • passageway sections 46 of adjacent ones of the mixer head elements 32 and 34 completely overlap so that they together rectilinear passageways through the mixer head 24.
  • passageway sections 46 of adjacent ones of the mixer head elements 32 and 34 are only partially overlapping so that they together form helicoidal passageways.
  • the mounting rod 16 is first provided without the mixer head elements 32 and 34 mounted thereto. Then, washers 33 or other spacers, if needed, and one of the end mixer head elements 34 are mounted on the mounting rod 16, along with successively a suitable number of intermediate mixer head elements 32.
  • the number of intermediate mixer head element 32 depends on the depth of liquid to mix and its viscosity, among other things.
  • another end mixer head element 34 followed by the washer 33 are mounted to the mounting rod 16 and the nut 28 is screwed on the threads 30 until the mixer head elements 32 and 34 are fixed to the mounting rod 16 in a fixed angular configuration relative to each other.
  • the mixer head elements 32 and 34 are removably mounted to the mounting rod 16 as removing the nut 28 completely allows sliding the mixer head elements away from the mounting rod 16.
  • the configuration of the mixer head 24 selected depends on the results to achieve. For example, if all the passageway sections 46 are aligned with each other, in the first configuration, a vortex is created in the liquid, which mixes thoroughly and rapidly the liquid and any substance to mix therewith. If the passageway sections 46 are offset from each other, for example in the second configuration, less fluid can enter the passageway sections 46 and flow of the fluid therein is slowed down, which is useful to agitate the liquid. This agitation is results in much slower fluid speed and smaller shear within the liquid, which my be useful for example to agitate a liquid including flocculated solids without destroying the flocculation.
  • Fig. 10 illustrates an alternative mixer head element 132 usable instead of the mixer head elements 32 and 34 on the mounting rod 16.
  • the mixer head element 132 is similar to the intermediate mixer end element 32, except that the passageway sections 146 have a substantially circular transversal cross-sectional configuration. Also, all the passageway sections 146 are provided with an outlet 48. Finally, the recesses 41 are deeper than in the previously described mixer head elements.

Abstract

L'invention concerne une tête (24) de mélangeur servant à mélanger un fluide, la tête (24) de mélangeur comprenant : une tige de montage (16) sensiblement allongée définissant un axe de tige (18) longitudinal et des extrémités proximale et distale (20 et 22) de tige, sensiblement opposées longitudinalement ; et au moins deux éléments (32, 34) de tête de mélangeur, montés sur la tige de montage (16), lesdits éléments (32, 34) définissant chacun des surfaces d'extrémité proximale et distale (42 et 44) sensiblement opposées, et une surface périphérique (40) se déployant entre celles-ci ; une partie (36) montage de tige, montée sur la tige de montage (24) ; une partie passage (46) se déployant entre les surfaces d'extrémité proximale et distale (42 et 44) et qui est espacée par rapport à la surface périphérique (40) ; et un orifice de sortie (48), qui se déploie depuis la partie passage (46) vers la surface périphérique (40).
PCT/IB2014/063513 2013-08-02 2014-07-29 Tête de mélangeur et mélangeur comprenant celle-ci WO2015015416A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361861620P 2013-08-02 2013-08-02
US61/861,620 2013-08-02

Publications (1)

Publication Number Publication Date
WO2015015416A1 true WO2015015416A1 (fr) 2015-02-05

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020118597A1 (en) * 2000-10-30 2002-08-29 Silverson Machines Inc. Mixing head with axial flow
CA2300909C (fr) * 1997-08-20 2005-11-22 Tva Technologies Pty. Ltd. Dispositif melangeur et aerateur ameliore
US20060133196A1 (en) * 2004-12-22 2006-06-22 Bruce Byers Non-aerating agitation system
US7134621B2 (en) * 2001-07-20 2006-11-14 Woon Seung Choi Mixing apparatus
US20100125157A1 (en) * 2008-11-07 2010-05-20 H R D Corporation High shear process for producing micronized waxes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2300909C (fr) * 1997-08-20 2005-11-22 Tva Technologies Pty. Ltd. Dispositif melangeur et aerateur ameliore
US20020118597A1 (en) * 2000-10-30 2002-08-29 Silverson Machines Inc. Mixing head with axial flow
US7134621B2 (en) * 2001-07-20 2006-11-14 Woon Seung Choi Mixing apparatus
US20060133196A1 (en) * 2004-12-22 2006-06-22 Bruce Byers Non-aerating agitation system
US20100125157A1 (en) * 2008-11-07 2010-05-20 H R D Corporation High shear process for producing micronized waxes

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