EP3202489A2 - Dispositif mélangeur et/ou de pompage destiné à acheminer, homogénéiser et/ou disperser des produits coulant - Google Patents

Dispositif mélangeur et/ou de pompage destiné à acheminer, homogénéiser et/ou disperser des produits coulant Download PDF

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Publication number
EP3202489A2
EP3202489A2 EP17151619.8A EP17151619A EP3202489A2 EP 3202489 A2 EP3202489 A2 EP 3202489A2 EP 17151619 A EP17151619 A EP 17151619A EP 3202489 A2 EP3202489 A2 EP 3202489A2
Authority
EP
European Patent Office
Prior art keywords
rotor element
rotor
pumping
mixing
product
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
EP17151619.8A
Other languages
German (de)
English (en)
Other versions
EP3202489B1 (fr
EP3202489A3 (fr
Inventor
Ulf Sieckmann
Olaf Hommers
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.)
Symex GmbH and Co KG
Original Assignee
Symex GmbH and Co KG
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 Symex GmbH and Co KG filed Critical Symex GmbH and Co KG
Publication of EP3202489A2 publication Critical patent/EP3202489A2/fr
Publication of EP3202489A3 publication Critical patent/EP3202489A3/fr
Application granted granted Critical
Publication of EP3202489B1 publication Critical patent/EP3202489B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/41—Emulsifying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/52—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle with a rotary stirrer in the recirculation tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/53—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced
    • 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
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1122—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades anchor-shaped
    • 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
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
    • 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
    • B01F27/40—Mixers with rotor-rotor system, e.g. with intermeshing teeth
    • B01F27/42—Mixers with rotor-rotor system, e.g. with intermeshing teeth with rotating surfaces next to each other, i.e. on substantially parallel axes
    • B01F27/421—Mixers with rotor-rotor system, e.g. with intermeshing teeth with rotating surfaces next to each other, i.e. on substantially parallel axes provided with intermeshing elements
    • 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
    • B01F27/811—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 with the inflow from one side only, e.g. stirrers placed on the bottom of the receptacle, or used as a bottom discharge pump
    • B01F27/8111—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 with the inflow from one side only, e.g. stirrers placed on the bottom of the receptacle, or used as a bottom discharge pump the stirrers co-operating with stationary guiding elements, e.g. surrounding stators or intermeshing stators
    • 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
    • B01F27/84—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with two or more stirrers rotating at different speeds or in opposite directions about the same axis

Definitions

  • the invention relates to a device for homogenizing and / or dispersing flowable products of all kinds and forms, such as.
  • a device for homogenizing and / or dispersing flowable products of all kinds and forms such as.
  • As liquids, powders or solid-liquid mixtures with at least one container for receiving such a product and a pumping and / or mixing device for conveying, homogenizing and / or dispersing flowable products, with a rotatably mounted about a first axis of rotation first rotor element , which is drivable by means of a drive device, and a rotatable about a second axis of rotation mounted second rotor element which is drivable by a drive means, wherein the first rotor element and the second rotor element, with respect to their axes of rotation, an axial offset from one another.
  • Devices of the type described above are used, for example, for homogenizing and / or dispersing flowable or powdery products having a closed container, such as a stirred container.
  • a closed container such as a stirred container.
  • the various solid, flowable or liquid starting materials are entered and processed by means of, for example, an arranged inside the container agitator to a product having a preferably homogeneous structure.
  • a pumping and / or mixing device is connected to the container.
  • a homogenizer for homogenizing flowable substances which has a container with a homogenizer connected to the container.
  • the homogenizer comprises two rotors which can be driven by means of a drive device and which are each independently drivable.
  • the disclosed rotor / rotor arrangement allows the same direction or opposite movement of the rotors.
  • the known rotor / stator assemblies and rotor / rotor assemblies each contactless intermeshing component sections, whereby the shear stress is increased to the product that flows through such an arrangement.
  • Rotor / rotor or rotor / stator thus have component sections lying on a plane extending approximately perpendicular to its axis of rotation.
  • the mixing or stirring device comprises a container, within which two coaxial guided waves are arranged, wherein mixing blade units or paddle wheels can be arranged at different heights and driven independently of each other.
  • the invention is thus based on the object of specifying a pumping and / or mixing device of the type mentioned, which is improved and / or with a powdered substance can be mixed in simplified and improved homogeneity in the mixture even in preferably purely powdery phases to simple Way is achievable.
  • the invention solves the underlying object of a Vorrichtng for homogenizing and / or dispersing flowable products of the type described by the pumping and / or mixing device is arranged in a portion of a container connected to the circulation line (28), wherein the rotor elements are housed in a housing, wherein the housing has an inlet opening for flowing the product into the interior of the housing and an outlet opening for the outflow of the product from the interior, and wherein the housing in a wall defining the interior preferably cylindrical wall portion of a metering or addition port for a in the product to be added substance and / or additionally has a discharge opening of a bypass line, which is preferably arranged in the axial direction adjacent to the first rotor element or axially between the first and second rotor element / are.
  • the invention is based on the finding that with the aid of a pumping and / or mixing device, which preferably has a housing accommodating the first rotor element and the second rotor element, the pumping and / or mixing device is thus arranged in a section of a circulation line connected to the container, wherein the rotor elements are accommodated in a housing, wherein the housing has an inlet opening for flowing the product into the interior of the housing and an outlet opening for the outflow of the product from the interior, and wherein the housing preferably in an interior wall defining the preferably cylindrical wall portion an addition opening for a material to be introduced into the product and / or additionally a discharge opening of a bypass line, which preferably in the axial direction adjacent to the first rotor element or axially between first and second rotor element is / are arranged.
  • An axial offset of the rotor elements from one another or an axial spacing of the rotor elements is to be understood here as meaning that the two rotor elements the pumping and / or mixing device according to the invention, based on their axes of rotation, are arranged on different levels and thus do not mesh areas or sections of the rotor elements.
  • there is a plane between the rotor elements which is free of possible components or structural parts of the rotor elements.
  • the product receives a preferred flow direction when flowing through the housing of the pumping and / or mixing device by means of the first and / or second rotor element.
  • the inlet opening for the housing is aligned axially with respect to the first rotor element.
  • the outlet opening of the housing is preferably provided in a radial wall section.
  • the housing of the pumping and / or mixing device has a cylindrical configuration.
  • an addition opening in the housing of the pumping and / or mixing device for an introduced into the flowable additive has the advantage that a floating example of a powdery addition substance by the direct addition in a directly through the pumping and / or mixing device guided liquid product can be reduced.
  • a discharge opening is formed axially between the first and second rotor elements in the cylindrical wall section of the housing of the pumping and / or mixing device.
  • the discharge opening corresponds to a bypass line, which establishes a connection directly to the circulation line.
  • bypassing is to be understood in the present case that the partial flow of the product, which flows through the bypass line, does not come into contact with the second rotor element.
  • the pumping and / or mixing device is arranged at a distance from the stirring container, so that in each case before and after the pumping and / or mixing device, a pipe section of predetermined length is provided for connection to the container.
  • the pumping and / or mixing device is then preferably arranged inline, wherein the described embodiment is also referred to as a stand-alone version.
  • the invention solves its underlying object according to a further aspect in a device for homogenizing and / or dispersing flowable products, in particular of emulsions or dispersions of the type described, in which the pumping and / or mixing device is arranged above the container bottom, wherein the offset between the rotor elements designed as mixing parts is selected such that a shear gap extending in one plane is formed.
  • a preferred embodiment of the invention provides that the axes of rotation of the first and second rotor element are substantially parallel to each other, preferably coaxially.
  • the coaxial arrangement of the Rotation axes provided an advantageous congruent alignment or arrangement of the first and second rotor element to each other. This results in a comparative shear stress of at least by means of the inventive pumping and / or mixing device moving flowable product over preferably the entire circumference of the two rotors.
  • a compact and thus space-saving arrangement of the first and second rotor element is effected.
  • the first rotor element with a first drive shaft and the second rotor element are coupled to a second drive shaft, which are drivable by means of various drive means, wherein preferably one of the drive shafts is formed as a hollow shaft.
  • the provision of respective separate drive shafts for driving the first and second rotor elements, which are preferably rotationally coupled to a first and a second drive means ensures an independent drive of the first rotor element relative to the second rotor element.
  • the first and second rotor element in the same direction, ie the same direction of rotation, or in opposite directions, ie having different directions of rotation, are driven.
  • an individual adaptation of the rotational speeds of the first and second rotor element is possible.
  • the formation of a drive shaft as a hollow shaft also has the advantage that both rotor elements are mechanically driven with respect to their axes of rotation from one side. Thus, the compactness of the pumping and / or mixing device according to the invention is further improved.
  • the axial offset between the first and the second rotor element is variable.
  • the distance is preferably adjustable in the longitudinal direction of the axes of rotation, whereby, in one embodiment of the invention, the gap, in particular the shearing gap, between the first and second rotor element can be tailored individually to the flowable product to be processed. Depending on the given viscosity of the flowable product to be mixed or conveyed, the distance between the first and second rotor element is increased or decreased.
  • the position of at least one of the rotor elements is changed on a correspondingly assigned drive shaft.
  • first and second drive shaft is displaced relative to the respective other drive shaft in the axial direction with the respective first or second rotor element fixedly arranged thereon in the axial direction.
  • the first or second drive shaft is preferably coupled to a corresponding axial adjustment unit.
  • the first rotor element is designed as an axial pumping wheel and / or the second rotor element as a radial pumping wheel.
  • the first rotor element is used to convey the flowable product in the longitudinal direction of the rotor axis of the first rotor element.
  • the second rotor element is designed as a radial pumping wheel. With the help of the radial pumping wheel is a deflection in the direction of movement of the flowable product by about an angle of 90 degrees.
  • the flowable product which is preferably sucked parallel to the axis of rotation of the second rotor element, is deflected by means of the radial pumping wheel, so that it is discharged or discharged essentially uniformly over the circumference of the rotating second rotor element in an approximately radial direction relative to its axis of rotation.
  • the distance or offset between the first and second rotor element is selected such that it corresponds to at least about one fifth of the diameter of the first or second rotor element.
  • the first rotor element has a plurality of substantially radially projecting to the axis of rotation conveying wings, which are adapted to preferably cause a first conveying movement of the product in the direction of the second rotor element.
  • the first rotor element has in particular three, four, five or more conveying wings, which preferably run radially to the axis of rotation of the first rotor element.
  • the conveying wings preferably have a curved course or a curved wing shape.
  • an effective transformation of the rotational movement of the first rotor element is ensured in a conveying movement of the product with a primarily axial component of movement.
  • the second rotor element has a plurality of conveying blades, which are adapted to a second conveying movement of the product with a radial component of movement to cause the outside.
  • the second rotor element here a radial pumping wheel, has an axial, preferably centrally arranged inlet for the product to be moved and, in particular, to be homogenized.
  • the inlet of the second rotor element faces the first rotor element, wherein preferably the first rotor element is arranged above the second rotor element.
  • the outlet of the second rotor element is provided on the peripheral surface of the second rotor element.
  • the second rotor element has a plurality of conveying blades in the region of its outer circumference.
  • the conveying blades have a preferably curved course or have a shape which essentially corresponds to a section of a spiral running outward from the axis of rotation.
  • the second rotor element is associated with a stator having a plurality of stator elements through which the product passes during the second conveying movement generated by the second rotor element.
  • a stator having a plurality of stator elements through which the product passes during the second conveying movement generated by the second rotor element.
  • This achieves an improved shearing stress and a preferably homogeneous mixing of the product emerging from the second rotor element.
  • Powdery addition substances which are introduced into a preferably liquid or pasty product, can be broken up in a simplified manner with the aid of the stator assigned to the second rotor element.
  • the stator is associated with the periphery of the second rotor element, preferably the outer circumference and thus the outlet of the second rotor element.
  • the stator thus forms with its stationary stator elements a flow resistance for the conveyed product.
  • the stationary stator elements preferably extend parallel to the axis of rotation of the second rotor element.
  • the introduction of an additive in the funded product stream is thus simplified.
  • by means of the decreasing flow cross-section of the axial inlet region for the second, preferably designed as a radial pumping rotor element is generated.
  • the housing is also divided by the decreasing in the flow direction flow cross-section spatially into two housing areas.
  • each housing part preferably forms at least one of each housing member receiving a rotor element.
  • the housing has a funnel-shaped inlet opening in the flow direction in front of the first rotor element.
  • the first and second rotor elements designed as a mixing part each have two or more mixing vanes.
  • the shear stress can be increased in an advantageous manner, especially in a powdery product, such as powder materials. This has the consequence that the powdery but flowable product is optimally broken in the gap between the rotor elements formed as mixing parts.
  • the uniformity of the mixing of the flowable product is preferably further improved with the mixing parts arranged at a distance from one another.
  • a circulation of the flowable product is preferably not reacted with the rotor elements formed as mixing parts.
  • the shearing gap between the mixing parts in particular the mixing blades, has a gap which is in the range of about 2 to 25 mm.
  • the shear gap has a gap in the range between 5 and 20 mm.
  • the size of the shearing gap between the mixing parts is formed changeable.
  • the first and the second rotor element each have two or more substantially radially to the axis of rotation extending mixing vanes.
  • a shearing force is preferably generated at different levels within the flowable product by the rotor elements, which preferably rotate in opposite directions.
  • the shear stress in the product and the associated mixing of the product is further improved.
  • the first and the second rotor element have differently long mixing blades and a different number of mixing blades.
  • the mixing vanes of the first and second rotor elements can have a purely radial orientation.
  • At least a portion of the mixing blades, with respect to the axis of rotation, in the axial or movement direction have a curved course or extend at an angle not equal to 90 °.
  • projections or teeth may be formed on the mixing vanes which project or protrude in the circumferential direction, in the tangential and / or in the axial direction on the mixing vanes.
  • a circumferential shear gap between the first and second rotor elements preferably continues to be formed.
  • the first rotor element additionally has a plurality of mixing blades inclined at an angle to its axis of rotation.
  • the additional mixing blades extend at an angle in the range of about 5 to 85 degrees, preferably in a range of about 20 to 55 degrees, inclined to the axis of rotation on the first rotor element.
  • the additional mixing blades are arranged on the side of the first rotor element, which faces away from the second rotor element of the pumping and / or mixing device according to the invention. These obliquely oriented to the axis of rotation mixing blades may also have projections or teeth.
  • the inclined impellers are arranged in a plane at a distance above the shear gap defining mixing vanes of the first and second rotor element. Due to the distance of the inclined impeller, with which preferably a conveying direction of the material mixture in the direction of the shear gap is effected, an adverse effect on the mixing process in the shear gap between the relatively movable mixing parts is avoided with their mixing blades.
  • the inclined impellers are disposed on a plane spaced from the mixing vanes of the first rotor element in the range of about 50 mm to about 150 mm.
  • the stirring blades forming a type of stirring part are in particular rigidly connected to the first rotor element and its mixing vanes extending essentially radially to the axis of rotation of the first rotor element.
  • the mixing vanes and the stirring vanes of the first and second rotor elements are preferably designed as bar elements with a polygonal cross section, wherein the bar elements preferably have a trapezoidal cross section.
  • the rod elements on the first and second rotor elements with their preferably quadrangular cross section cause a preferably homogeneous mixing of, in particular, a purely pulverulent material mixture. With the polygonal cross section of the rod elements, the shear stress in the material mixture is further increased.
  • the mixing vanes of the first and second rotor elements preferably have surfaces extending parallel to one another and define a preferably trapezoidal cross-section of the rod elements on the first and second rotor elements.
  • the stirring parts have bar elements with a preferably quadrangular substantially rectangular cross section, wherein in one embodiment the cross section changes in the extension direction of the stirring vanes.
  • the pumping and / or mixing device is arranged in a section of the circulation line which is directly associated with an outlet opening of the container formed on the container bottom.
  • the inlet opening of the pumping and / or mixing device is fluid-conductively connected to the outlet opening of the container, or the inlet opening of the pumping and / or mixing device forms the outlet opening of the container.
  • the rotor elements of the pumping and / or mixing device are arranged directly below the container bottom.
  • the center axis of the outlet opening is arranged coaxially to the center axis of the container, whereby a uniform discharge of the flowable product from the interior of the container is ensured.
  • the circulation line in particular its pressure side, which leads from the outlet opening of the housing of the pumping and / or mixing device back to the container, is fluid-conductively connected to a side wall of the container.
  • the entrance opening into the container is e.g. provided or arranged in the upper half of a portion of the side wall of the container.
  • the inlet for the circulation line can also be located in another place, such as e.g. be provided in a lower portion of the side wall or at the bottom of the container
  • a rotating agitator is preferably arranged with a plurality of relatively movable agitator parts.
  • a stirrer With the help of a stirrer, the amount of product in the container can be kept on the whole in an advantageous manner in motion. This is preferably counteracted segregation of the product within the container and thus maintain its homogeneity.
  • an agitator such as an anchor agitator or a Koaxialrrocktechnik, is used with at least two relatively movable agitating parts, which can also be moved in each case relative to the container.
  • Each stirring part preferably has a plurality of displacer elements arranged in the radial direction to the container longitudinal axis, also referred to as mixing blades.
  • the product is set in motion in the container, wherein the formation of a trombone within the container is avoided by the preferably counter-rotating stirring parts.
  • the axes of rotation of the stirring parts are arranged coaxially or at least parallel to the center axis of the container.
  • Both agitating parts are preferably each a separate one Assigned drive device with which the stirring parts are movable independently.
  • Fig. 1 shows a device 1 for homogenizing and / or dispersing flowable products, which has a container 2, also referred to as a stirred tank.
  • a container 2 also referred to as a stirred tank.
  • the suction side of a pumping and / or mixing device 6 is connected via a discharge line 4, starting from the container 2, which is in turn fluidly connected with its pressure side via a supply line 8 to the container 2.
  • the supply and supply lines 4, 8 form a circulation line, via which a flowable product located in the container 2 can be circulated at intervals or continuously.
  • the inlet 10 of the drain 4 is connected to the container bottom 12, and the outlet 14 of the inlet 8 is coupled to the side wall 16 of the container 2.
  • the arrows 18, 18 ' indicate in the embodiment shown the flow direction of a product located in the container 2 during a pumping and / or mixing process.
  • the pumping and / or mixing device 6 is placed separately from the container 2 and forms a so-called stand-alone variant.
  • the pumping and / or mixing device 6 comprises two drive devices 20, 22, which drive the pumping and / or mixing elements not shown in more detail, as described in more detail below.
  • the inputting or filling of starting materials for producing a flowable product to be produced in the interior of the container 2 takes place via filling and input openings (not shown in detail), which are provided or arranged in particular in the upper region of the container.
  • the discharging or dispensing of a finished product takes place via in particular in the container bottom 12 formed discharge openings, not shown, or via a not shown branch to the circulation line or to the in Fig. 1 shown and detailed in the following figures pumping and / or mixing devices.
  • a device 1 ' which has a container 2', in whose container bottom 12 an outlet opening 24 is provided, below which a pumping and / or mixing device 6 'is arranged directly.
  • the outlet opening 24 at the container bottom 12 simultaneously forms the inlet opening 25 of the pumping and / or mixing device 6 '.
  • the outlet opening 26 of the pumping and / or mixing device 6 ' is connected via a circulation line 28 with the side wall 16 of the container 2' media-conducting, whereby a circuit for circulating a product located in the container 2 'is formed.
  • the arrows 18, 18 'in indicate the flow direction of the mixture received within the container.
  • the partially shown in section pumping and / or mixing device 6 has a housing 30 in which a first rotor element 32 and a second rotor element 34 is arranged.
  • the first rotor element 32 is coupled to the first drive device 20, and the second rotor element 34 is coupled to the second drive device 22 mechanically, in particular by rotation.
  • First rotor element 32 and first drive device 20 are coupled to each other via a first drive shaft 36.
  • the second rotor element 34 is coupled to the second drive device 22 via a second drive shaft 38.
  • Both drive shafts 36, 38 are arranged coaxially, wherein the second drive shaft 38 is formed as a hollow shaft, within which the first drive shaft 36 is rotatably mounted.
  • First and second rotor element 32, 34 are driven separately from each other, so that the rotor elements can be driven in the same direction or in opposite directions and also can be moved at different speeds.
  • Fig. 2 illustrates, the rotor elements 32, 34 in the longitudinal direction of their axes of rotation to an axial offset from each other.
  • First and second rotor element are thus arranged at a distance from each other.
  • a metering line 60 is arranged on the housing 30 of the pumping and / or mixing device 6 ', via which the inputting or introduction of solid, liquid or pasty additives can take place.
  • Arrow 39 indicates the direction of flow of the additive in the direction of the pumping and / or mixing device 6 '.
  • FIG. 3 shows a further embodiment of an inventive device 1 "shown, which comprises a container 2", to which no circulation line for a product is connected.
  • a pumping and / or mixing device 6 is arranged on the container bottom 12 in such a way that the pumping and mixing elements are arranged in the interior of the container 16.
  • the pumping and / or mixing device 6" has a first rotor element 32 'and a second rotor element 34' on.
  • First and second rotor element 32 ', 34' are in accordance with the in Fig. 2 shown embodiment via the drive shafts 36, 38 with a first drive means 20 and a second drive means 22 mechanically coupled.
  • the first and the second rotor element 32 ', 34' are arbitrarily drivable by means of the drive means 20, 22.
  • the rotational speed and the direction of rotation of the rotor elements 32 ', 34' can be changed.
  • changing the direction of rotation of the first and second rotor element and the conveying direction of the mixture within the container 2 is changed.
  • the first rotor element 32 ' is designed as an axial pumping wheel
  • the second rotor element 34' is designed as a radial pumping wheel.
  • First and second rotor element 32 ', 34' are axially spaced relative to their axis of rotation.
  • the first rotor element 32 ' has a plurality of conveying wings 40, 40' projecting radially to the axis of rotation, which are set up to effect a conveying movement of the product or of the mixture in the longitudinal direction of its axis of rotation and thus in the direction of the second rotor element 34 '.
  • the second rotor element 34 ' comprises a plurality of curved conveying blades 42, 42' (FIG. Fig. 7 ), which are adapted to effect, relative to its axis of rotation, a conveying movement of the product in the radial direction to the outside.
  • the first and second rotor elements 32 ', 34' arranged inside the container 2 "rotate in particular in opposite directions to one another, which counteracts the creation of a trombone inside the container Fig. 3
  • the pumping and / or mixing device 6 is flanged to the container bottom 12.
  • FIG. 4 a fourth embodiment of an apparatus for homogenizing and / or dispersing flowable products is shown.
  • the device 1 ' has a self-contained container 2'" without a circulation line.
  • a pumping and / or mixing device 6 '" is in the embodiment shown again directly above the container bottom 12 of the container 2'" arranged.
  • the pumping and / or mixing device 6 '" in turn has a first rotor element 32" and a second rotor element 34 ", which project at least partially into the interior of the container 2'".
  • this embodiment as a mixing parts formed first and second rotor elements 32 ", 34" on.
  • the rotor elements 32 ", 34” have two or more mixing vanes 44, 44 'which protrude at least substantially in the radial direction from the axes of rotation of the first and second rotor elements 32 ", 34".
  • the first rotor element 32 "additionally has a plurality of, preferably two, at an angle inclined to its axis of rotation extending impeller 46, 46 ', which in the direction of the interior of the container 2'" protrude.
  • Such designed as mixing parts rotor elements 32 ", 34” are used for mixing of powdery products.
  • First and second rotor element 32 ", 34" also have an axial offset from each other, which is selected such that a shear gap 47 extending in a plane is formed, in which no regions or sections of the rotor elements project.
  • the shear gap 47 formed between the first and second rotor elements 32 ", 34” has a gap which is in the range of approximately 2 to 25 mm.
  • first and second rotor elements 32 ", 34" designed as mixing parts can be driven in opposite directions as well as in the same direction and at varying speeds by means of the drive devices 20, 22.
  • First and second rotor element 32 ", 34" are mechanically connected to the respective drive devices 20, 22 via a drive shaft 36, 38 mechanically coupled to the rotor elements.
  • the second drive shaft 38 is in turn designed as a hollow shaft, in the free interior of the first drive shaft 36 is rotatably arranged.
  • FIGS. 5 and 6 show alternative embodiments of a device according to the invention 1 '", which optionally comprise an agitator 48, 48' to the rotor elements 32", 34 "which are designed as mixing parts, with the aid of the agitators 48, 48 'is a product in container 2'" on the whole kept moving.
  • the agitator 48 ( Fig. 5 ), which is designed as an armature agitator, comprises a stirring part 50 whose axis of rotation is aligned coaxially with the central axis of the container 2 '.
  • the agitator 48 comprises at least two stirring parts 52, 52' whose axes of rotation are uniformly spaced around the axis of rotation of the
  • the stirring parts 50, 52, 52 ' have a multiplicity of displacement elements 54, 54'
  • the displacement elements 54, 54 'of the stirring parts 52, 52' move without contact between the displacement elements 54, 54 arranged at different heights
  • the displacement elements 54, 54 'of the two stirring parts have a height offset from one another.
  • the stirrer 48 'of in FIG. 6 in the embodiment of the device 1 'according to the invention shown, "comprises two coaxially guided agitating parts 56, 56' with displacer elements 58, 58 'arranged thereon.
  • the displacer elements 58, 58' are arranged one above the other at intervals at a respective agitating part 56, 56 ' In the distances between the displacement elements 58, 58 'of the first stirring part 56, the displacement elements 58, 58' of the second stirring part 56 'run during the relative movement the stirring parts 56, 56 'therethrough.
  • the displacer elements 58, 58 'of the two stirring parts 56, 56' rotating in opposite directions in one embodiment have a height offset from each other.
  • FIGS. 7 and 8 are detailed views of the in the Fig. 1 and 2 shown embodiments of the pumping and / or mixing device 6, 6 'shown.
  • the pumping and / or mixing device 6, 6 ' comprises a housing 30 with an inlet opening 25 and an outlet opening 26.
  • the inlet opening 25 is connected to, for example, a discharge line 4 (FIG. Fig. 1 ) or forms the outlet opening 24 of the container 2 '(FIG. Fig. 2 ).
  • the first and the second rotor element 32, 34 have an axial offset from each other in the longitudinal direction of their axes of rotation.
  • the first rotor element 32 with its conveying wings 40, 40 ' is thus axially spaced from the second Rortorelement 34 with its conveying blades 42, 42'.
  • the distance is at least about one fifth of the diameter of the first or second rotor element 32,34.
  • the distance or the axial offset between the first and second rotor element is variable.
  • an addition port 60 'or feed line 60 for introducing or adding an additive into the mixture or product flowing through the housing 30 is arranged within the housing 30, within the housing 30, an addition port 60 'or feed line 60 for introducing or adding an additive into the mixture or product flowing through the housing 30 is arranged.
  • the feed opening 60 'or feed line 60 is arranged in a radial wall section 61 of the housing 30, which is adjacent to the first rotor element.
  • the interior of the housing in the conveying direction between the first rotor element 32 with its conveying wings 40, 40 'and the second rotor element 34 has a flow area 62 with a decreasing flow cross-section.
  • the interior of the housing 30 is divided by the narrowing flow area 62 into two chambers 64, 64 '.
  • the housing 30 is formed in two parts, each chamber 64, 64 'of the housing 30 is made of a separate component.
  • Fig. 7 is the second rotor element 34 with its Delivery blades 42, 42 'associated with a stator 66 having a plurality of stator elements 68, 68'.
  • the stator 66 is flowed through by the mixture or the product during the second conveying movement generated by means of the second rotor element in an approximately radial direction to the axis of rotation of the second rotor element.
  • FIG. 8 The illustrated embodiment does not include a stator associated with the second rotor element 34.
  • pumping and / or mixing device 6 ' is, in contrast to the embodiment of Figure 7 achieved a reduced shear stress of the product, which is conveyed through the housing 30.
  • FIGS. 7 and 8 Furthermore, the mechanical coupling between the first rotor element 32 and the first drive shaft 36 and the second rotor element 34 and the second drive shaft 38 is illustrated.
  • Fig. 9 shows a perspective view of another embodiment of the particular in Fig. 3
  • the first rotor element 32 ' is arranged at a distance from the second rotor element 34'.
  • the first rotor element designed as an axial pumping wheel has a plurality, preferably two to five, conveying vanes 40.
  • the rotor elements 32 ', 34' of the pumping and / or mixing device 6 The conveying wings 40, 40 'are arranged inclined in the axial direction, whereby a conveying movement of the product immediately surrounding the rotor element 32' is converted in the axial direction upon rotation of the first rotor element 32 ' outer end of the conveying wings 40, 40 'connected via a ring member 70 with each other.
  • the second rotor element 34 ' is arranged below the first conveying element 32'.
  • the second rotor element 34 ' has a plurality of curved conveying blades 42, 42' which have a radially directed and circumferentially directed course.
  • Adjacent to the outer periphery of the second rotor element 34 ' is a stator 66 which has a plurality of stator elements 68, 68' arranged at predetermined distances from each other.
  • Fig. 10 shows a detailed representation of the rotor elements 32 ", 34", which are used as mixing parts for mixing a product preferably present as a pure powder phase.
  • First and second rotor element 32 ", 34" each have a plurality, preferably two substantially in the radial direction to the axis of rotation of the rotor elements 32 ", 34” projecting mixing blades 44, 44 'on.
  • First and second rotor element 32" and 34 are arranged to each other, between two rotor elements, a continuous shearing gap 47 is formed for the product to be mixed, the gap being approximately between 2 and 25 mm, preferably between 5 and 20 mm
  • the first rotor element 32 is connected to the first drive shaft 36
  • the second rotor element 34 is connected to the second drive shaft 38 (FIG. Fig. 4 and 6 ) mechanically coupled.
  • Fig. 11 shows an alternative embodiment of the designed as mixing parts rotor elements 32 ", 34", which are used for mixing a preferably present as a pure powder phase material mixture or product to be produced.
  • the first and second rotor elements have four mixing vanes 44, 44 'which project preferably essentially radially to the axis of rotation of the rotor elements 32 ", 34".
  • the rotor elements 32 ", 34” preferably each have four mixing vanes, wherein the number of mixing vanes 44, 44 'may be different on the rotor elements.
  • the impellers 46, 46 'on the first rotor element 32 "in a plane at a distance of about 50 to 150 mm above the mixing vanes 44, 44' on the first rotor element 32" arranged.
  • the mixing vanes 44, 44 'and the stirring vanes 46, 46' are preferably designed as bar elements with a polygonal cross section.
  • the rod elements have a quadrangular cross section, wherein the mixing vanes 44, 44 'have a trapezoidal cross section.
  • the mixing vanes 44, 44 ' are arranged relative to one another such that the mutually parallel surfaces 80, 80' on the rotor elements 32 ", 34" in a plane parallel to the mutually parallel surfaces 80, 80 'of the other second or first rotor element 34 ", 32" run.
  • FIG. 13 is an alternative embodiment to that in FIG Fig.2 shown apparatus 1 'for homogenizing and / or dispersing flowable products shown.
  • the device 1 ' has a container 2' with an outlet opening 24, which is fluid-conductively coupled to a pumping and / or mixing device 6 '.
  • the pumping and / or mixing device 6 'immediately downstream of the outlet opening comprises, as in the previous embodiments, a first rotor element 32 and a second rotor element 34.
  • the rotor elements 32 and 34 are driven via the respectively corresponding drive devices 20, 22.
  • the first rotor element 32 is designed primarily as an axial pumping wheel and the second rotor element 34 as a radial pumping wheel.
  • a circulation line 28 is connected, which opens in the embodiment shown in an upper portion of the side wall 16 of the container 2'.
  • the flow direction of the circulated mixture is indicated by the arrows 18, 18 '.
  • the circulation conduit 28 may also be fluidly connected to other portions of the container, such as a lower portion of the side wall 16 of the container 2 'or the container bottom 12.
  • bypass line 74 is also provided.
  • the bypass guide 74 establishes a fluid-conducting connection between a cylindrical wall section 61 of the housing 30 and a section of the circulation line 28.
  • the discharge opening of the bypass line 74 is approximately equidistant between the inlet opening 25 and the outlet opening 26 of the pumping and / or mixing device 6 'arranged.
  • Fig. 14 is a detailed view of the pumping and / or mixing device 6 'from Fig. 13 displayed.
  • the feedstock addition passage 60 and bypass line 74 are connected to a cylindrical wall portion 61 of the housing 30, which is substantially between the first and second rotor elements as seen in the axial direction of the pumping and / or mixing device 6 ' 32, 34 is arranged.
  • the bypass line 74 in particular a partial flow (arrow 76) of the product flow flowing through the pumping and / or mixing device is branched out of the chamber 64 and without coming into contact with the second rotor element 34, ie the second chamber 64 'and the second rotor element 34 promptly, in the Circulation line 28 passed.
  • the flow (arrow 39) of the additive in the metering line 60 and the fluid flow of passing through the bypass line 74 on the second rotor element product partial stream (arrow 76) can be controlled or adjusted by not shown adjusting means, such as control valves. Similar or identical components are designated by the same reference numerals.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
EP17151619.8A 2016-01-14 2017-01-16 Dispositif destiné à homogénéiser et/ou disperser des produits fluides Active EP3202489B1 (fr)

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DE202016000169.9U DE202016000169U1 (de) 2016-01-14 2016-01-14 Pump- und/oder Mischeinrichtung zum Fördern, Homogenisieren und/oder Dispergieren fließfähiger Produkte

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CN107583553A (zh) * 2017-09-18 2018-01-16 陈海兴 一种消毒药水混制装置
CN108671789A (zh) * 2018-02-27 2018-10-19 罗斯（无锡）设备有限公司 一种粉料与液体预混机
CN109126499A (zh) * 2018-10-08 2019-01-04 方文星 一种化工生产用化学品配制罐

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CN108837761A (zh) * 2018-07-08 2018-11-20 泾县汇鼎锋建筑装饰工程有限公司 一种紊流增强型物料自动搅拌机
CN113458977B (zh) * 2021-07-21 2023-09-01 湖南省宜泰石业有限公司 石板材的曲线边加工系统及曲线边加工工艺
DE102021209275A1 (de) * 2021-08-24 2023-03-02 A. Berents GmbH & Co. Kommanditgesellschaft Mischeinrichtung zur Herstellung eines fließfähigen Produkts und Verfahren zum Betrieb einer Mischeinrichtung

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CN108671789A (zh) * 2018-02-27 2018-10-19 罗斯（无锡）设备有限公司 一种粉料与液体预混机
CN109126499A (zh) * 2018-10-08 2019-01-04 方文星 一种化工生产用化学品配制罐

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EP3202489A3 (fr) 2017-12-20
DE202016000169U1 (de) 2017-04-20

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