EP3192582B1 - Outil pour un mélangeur, mélangeur comprenant l'outil et utilisation de l'outil - Google Patents

Outil pour un mélangeur, mélangeur comprenant l'outil et utilisation de l'outil Download PDF

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Publication number
EP3192582B1
EP3192582B1 EP16205611.3A EP16205611A EP3192582B1 EP 3192582 B1 EP3192582 B1 EP 3192582B1 EP 16205611 A EP16205611 A EP 16205611A EP 3192582 B1 EP3192582 B1 EP 3192582B1
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EP
European Patent Office
Prior art keywords
tool
blade
rotation
rotary shaft
rotational axis
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.)
Active
Application number
EP16205611.3A
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German (de)
English (en)
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EP3192582A1 (fr
Inventor
Stefan Soiné
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.)
IREKS GmbH
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IREKS GmbH
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Publication of EP3192582A1 publication Critical patent/EP3192582A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23314—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer element
    • 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
    • B01F23/70—Pre-treatment of the materials to be mixed
    • B01F23/702—Cooling materials
    • 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
    • B01F23/70—Pre-treatment of the materials to be mixed
    • B01F23/711—Heating materials, e.g. melting
    • 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
    • B01F27/1123—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades sickle-shaped, i.e. curved in at least one direction
    • 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
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/2122—Hollow shafts

Definitions

  • the invention relates to a tool, in particular for comminuting and / or mixing mixed material, for a mixing device with a container for receiving the mixed material, the tool rotating in the container in a first direction of rotation about an axis of rotation in order to comminute the mixed material and / or to mix, and wherein the tool has a rotary shaft with at least one tool blade extending radially outward from the rotary shaft, which forms an end face in the first direction of rotation and a rear side in a direction opposite to the first direction of rotation.
  • the invention further relates to a mixing device with a corresponding tool.
  • mixed materials can identify a combination of different substances, in particular solids such as baking mixes. For the purposes of the invention, however, this also includes a single solid, such as Flour processed by the blender.
  • additives such as gases, liquids and / or solids combinations thereof are introduced into the mix. This can e.g. Preservatives, colorants, dyes, etc. or just air.
  • Mixing devices known from the prior art have a container rotatably mounted about a vertical axis for receiving the mixture with an upper opening.
  • the container is loaded with mixed material through the opening.
  • a mixing tool for example a rotatable mixing shaft with at least one helix, projects from above through the opening at an angle to the vertical axis of the container and rotates.
  • the tool moves through the mix and mixes the substances so that they are processed into a homogeneous mass. At the appropriate speed, not only does mixing take place, the tool also crushes the mix.
  • Devices of this type are generally used separately and are known under the term chopper or comminution tool. In particular, the end face of the tool blades ensures that the mix is crushed by hitting the mix at high speed.
  • a mixing tool which rotates about the longitudinal axis of the container and which transports the mixed material upwards along the container wall, is mounted in a container.
  • a hollow shaft In the bottom area in the container wall there is a hollow shaft rotatably driven by an electric motor, which projects into the interior of the container.
  • Cutting rotors which serve to avoid lumps in the mix, extend radially outward from the hollow shaft.
  • the mixing device described has a whirling device in the bottom region, which has a multiplicity of stirring members which extend radially outward from the axis of rotation of the swirling device.
  • the agitators are angled at their outer end, kinking up and down.
  • Nozzles for introducing additives are arranged below the agitators on an injection pipe.
  • DE 198 57 775 A1 discloses a tool according to the preamble of claim 1 and relates to a device for mixing dry bulk materials and water-containing substances.
  • the device comprises four hollow paddles tapering in the radial direction, which have nozzles on their outer contour through which vapors can be introduced.
  • US 2009/110 559 A1 discloses a mixing propeller for introducing a fluid into liquids and mixing the liquids and solids in the liquids.
  • the blades of the propeller have closed end faces and side walls and rear sides with openings.
  • the fluids can be introduced into the liquids through the openings, the openings on the rear being arranged such that the emerging fluids meet the end face of the wing that follows in the direction of rotation in order to improve the mixing of the fluid in the liquid.
  • the object of the present invention is to improve the degree of efficiency of such a tool and a mixing device. This object is achieved by a tool with the features of claim 1 and by a mixing device with the features of claim 14.
  • the end face has an outwardly curved contour in a plane perpendicular to the axis of rotation and the rear side has an inwardly curved contour in a plane perpendicular to the axis of rotation
  • the tool blade has at least one nozzle for supplying additives or gases, liquids and / or solids on. Due to the special contour of the tool blade, there are speed differences between the currents on the front and rear side, which in the Laminar and turbulent flow conditions in the mix are caused in the area of the front and rear side. As a result, the mix is whirled up, mixed better and can also be comminuted better.
  • the first direction of rotation denotes the direction of rotation of the tool provided for the operation of a mixing device.
  • the plane that is perpendicular to the axis of rotation denotes the plane on which the axis of rotation is perpendicular.
  • the axis of rotation is perpendicular to the vectors spanning the plane and perpendicular to each other.
  • the corresponding viewing direction along the axis of rotation can be referred to as the top view of the plane.
  • the front side in the direction of rotation can also be referred to as a front edge of the tool blade and the rear side in the direction of rotation as a rear edge of the tool blade.
  • the section of the tool blade which extends radially outward forms the end face, in particular the end face, which cuts through the material to be mixed.
  • the front side faces the material flow that flows along the tool blade and can therefore also be referred to as the windward side.
  • the rear side or so-called rear side denotes the side which is oriented opposite to the direction of rotation. This corresponds to the lee side of the tool blade and can accordingly form a rear surface.
  • the tool blade moves around the axis of rotation in a plane to which the axis of rotation of the shaft is orthogonal.
  • the end face can have an arcuate cross-section or an arcuate contour in a viewing direction along the axis of rotation (plan view) and thereby extend radially outward and thereby approach a first axis along which the tool blade extends radially outward so that a forms an outwardly curved or convex contour.
  • the rear side also extends radially outward in an arc and approaches the first axis. However, the rear side has an inwardly curved, concave shape or contour.
  • the area portion of the end face can be larger than the area portion of the rear side of the total area of the front and rear sides.
  • the rotary shaft and the tool blade can have at least one feedthrough for additives to the at least one nozzle, so that additives can be passed through the rotary shaft and the tool blade from the nozzle into the mixture.
  • the rotary shaft can be designed as a hollow shaft or hollow lance for carrying out corresponding media or can be designed as a hollow shaft and accommodate a pipe or a line.
  • the feedthrough for the additives has at least one opening which is connected to the feedthrough in the tool blade.
  • the nozzles can be designed in the form of bores, openings or the like in the tool blade.
  • the tool according to the invention can be used as a mixing tool in order to mix the material to be mixed.
  • the tool can be used as a comminution tool to comminute the mix and thus improve the mixing result.
  • the invention makes it possible to advantageously integrate the functions of a mixer and a comminution tool into a tool.
  • the tool can be used in addition to a mixing spiral, but also as an alternative to the mixing spiral.
  • the tool is rotatably mounted, preferably in a lid that closes the opening of the container, and is rotatably driven by a suitable drive, such as an electric motor.
  • a suitable drive such as an electric motor.
  • the tool blade or the tool blades are preferably arranged on a lower end, that is to say on the end of the shaft which projects into the container.
  • the tool blade can have an outer contour surrounding the blade, which, like a wing, extends radially outward from the shaft.
  • the tool blade can also have a flat underside directed in a first direction of the axis of rotation and a flat top directed in the opposite direction.
  • the sides can be separated by an edge, e.g. be separated from each other on the front and rear side, wherein the edge can extend parallel to the axis of rotation and / or perpendicular to the top or bottom of the tool blade.
  • the edges can also be inclined, e.g. be designed as cutting edges.
  • the tool sheet has a perimeter that extends along the edge of the tool sheet.
  • the tool blade ends in a plan view in the radial direction or radially outside in a blunt outer section.
  • the outer section can be designed in such a way that it connects the rear and the front side to one another.
  • the outer section ensures improved flow conditions so that particularly strong and stable vortex configurations are created, which ensure additional mixing of the mix.
  • the mix does not hit the front edge of the tool blade, as on the front, but the outer area of the tool blade is drawn past the mix and draws a circular track through the mix.
  • the tool blade preferably has a plurality of nozzles which are arranged such that at least a number of the nozzles are at a different distance from the axis of rotation of the rotary shaft.
  • several nozzles can be distributed along the circumferential edge of the tool blade in such a way that at least a number of the nozzles are at a different distance from the axis of rotation of the rotary shaft.
  • the peripheral speed of the tool blade increases with increasing distance from the central axis, so that the impact on the mix can take place at a higher speed.
  • the material to be mixed hits the end face in the outer area of the tool blade at a significantly higher speed than in the vicinity of the center or rotation axis.
  • the acceleration of the additives inside the tool blade in the vicinity of the axis of rotation is less than on the outer circumference of the tool blade.
  • the pressure at which the liquid emerges from the nozzle is varied.
  • the centrifugal force causes the additive in the tool blade to be thrown outwards, causing it to accelerate and thus to exit the nozzles at high pressure.
  • the tool blade has a number of nozzles at least on the front side and in particular on the rear side.
  • the blunt outer section preferably also has at least one nozzle.
  • the nozzles are distributed in the circumferential direction of the tool sheet along the edge surrounding the tool sheet.
  • a further embodiment of the invention provides that the tool is perpendicular in a first direction or along a first axis extends radially outward to the axis of rotation and that with increasing distance in the first direction from the axis of rotation, the radial distance between the end face and the axis of rotation is greater than the radial distance between the rear side and the axis of rotation.
  • a reference point on the axis in the first direction can be selected, onto which the respective point of the front side or the rear side is projected vertically in the plan view.
  • the tool preferably has two tool blades lying opposite one another in the plane perpendicular to the axis of rotation. These are then preferably combined in a tool element or form a tool element. It has proven to be particularly advantageous if the two tool blades are at least partially integrally connected to one another.
  • the tool element can have at least one component that forms a section of the first tool sheet and a section of the second tool sheet.
  • the tool element can have a flat top component and a flat bottom component, wherein the top component and the bottom component each form a section of the first and the second tool blade.
  • at least two tool blades are combined in one tool element and formed in one piece.
  • the tool element can have an upper side component and a lower side component, which are connected to one another by a peripheral edge.
  • the concept of the invention also includes tool elements with more than two tool blades, for example three tool blades that are distributed around the rotary shaft at constant angular intervals.
  • the outwardly curved end faces of a first tool blade and a second tool blade can be diametrically opposite with respect to the axis of rotation.
  • the tool element is shaped such that the outer contour of the first tool sheet essentially corresponds to a point reflection of the second tool sheet by the axis of rotation.
  • a further embodiment of the invention provides that several tool elements or tool blades are arranged one behind the other in the direction of the axis of rotation, preferably evenly distributed.
  • tool elements or tool blades that are adjacent or immediately adjacent to one another in the direction of the axis of rotation are arranged at an angular offset, which reinforces the swirling effect in the vertical direction.
  • the angularly offset arrangement ensures that, for example, the swirls generated on the leeward side are carried upwards in the vertical direction by the swirls of the adjacent rotary blade following in the direction of rotation.
  • the flat top component and the flat bottom component are spaced apart from one another and preferably parallel to one another and are connected to one another by a flat outer contour, for example the front and rear side or the peripheral edge, so that there is between the top and the bottom or the top component and the bottom component forms a cavity.
  • a flat outer contour for example the front and rear side or the peripheral edge
  • the feedthrough for the additives in the hollow shaft can be connected to the cavity, so that additives introduced into the rotary shaft can be ejected through the nozzles.
  • the cavity then serves as a feedthrough for the additives. It proves to be advantageous if, as described above, the top component and the underside component are each part of two opposing tool blades. This saves production costs and assembly is considerably simplified.
  • the tool comprises a temperature control device, preferably arranged in the rotary shaft, for temperature control, that is to say for cooling and / or heating, the additives.
  • the temperature control device can have an inflow and an outflow for a temperature control agent, e.g. have a bath liquid such as cooling water.
  • a temperature control agent e.g. have a bath liquid such as cooling water.
  • the tool comprises at least two bushings and / or lines, such as pipes or the like, provided in the hollow rotating shaft, which extend in the axial direction of the rotating shaft, preferably parallel to the bushing for the additives, and are connected to one another in such a way that a bath fluid can be pumped through the lines in the manner of a circuit.
  • the temperature control device has a feedthrough for carrying out or passing through temperature control agents, the feedthrough for the additives being at least partially arranged in the feedthrough for the temperature control agents.
  • Efficient temperature control is achieved in particular if the hollow rotary shaft is designed as a tube, in particular for the inflow of the temperature control medium, so that, for example, the temperature control medium flowing in flows in the space between the feedthrough for the additives and the hollow rotary shaft.
  • One or more lines or pipes extending parallel to the feedthrough for the additives can be provided to discharge the temperature control means, which in the lower area of the rotary shaft are connected to the space between the feedthrough for the additives and the rotary shaft, that is to say the inflow, and form a circumferential channel.
  • the bushings can have corresponding connections for supplying and removing for the temperature control means.
  • a heat exchanger or the like can be connected to the connections in order to close the temperature control circuit.
  • the inflow and outflow are connected to each other in the lower area of the rotating shaft.
  • the connections can e.g. be provided in the form of radial rotary inlets, which allow the supply of liquids in rotating supply lines.
  • Suitable rotating introductions include DEUBLIN GmbH from Hofheim-Wallau, Germany.
  • spacers can be provided between the lines and an inner wall of the rotary shaft and / or between the lines and the outer wall of the feedthrough for the additives.
  • the feedthrough for the additives is preferably arranged centrally in the hollow rotary shaft, so that the axis of rotation of the feedthrough coincides with the axis of rotation of the rotary shaft.
  • a mixing device for mixing material to be mixed which comprises a tool with the features described herein.
  • a mixing device can in particular have a container, preferably rotatably mounted about a vertical axis, for receiving the mixed material. It proves to be particularly advantageous when the tool is rotatably mounted in a cover which can be covered by a container opening, so that the tool can be removed from the container together with the cover and the tool can be inserted into the container when the cover is placed on or over the container the opening of which is positioned (so-called mixer bell).
  • the mixing device can also have a mixing tool, such as a mixing helix or the like, the mixing tool transporting and mixing the material to be mixed upward essentially along a container wall of the container.
  • a mixing tool such as a mixing helix or the like
  • the tool or its shaft can basically have the connections described above for connecting a source for additives such as gases, liquids or solids. These can be introduced into the hollow shaft by means of a pump or another suitable device for introducing the additives.
  • the representation in the Figure 1 corresponds to a viewing direction along the axis of rotation 2 provided for the tool 1 shown.
  • the plan view shown corresponds to a plane which is perpendicular to the axis of rotation 2.
  • the cross section of the tool 1 is shown in this plane.
  • the tool 1 comprises a shaft 3 with a hollow inner section 4. In operation, the tool 1 is rotated about the axis of rotation 2 in a first direction of rotation 5.
  • the tool 1 comprises a tool element 6 fastened to the shaft 3 with two tool blades 7 and 8 lying opposite one another. Starting from the axis of rotation 2, the first tool blade 7 extends radially outwards in a first direction along that in FIG Figure 1 X-axis shown. The second tool sheet 8 extends along the X axis in the opposite Direction.
  • the tool 1 can be used as a mixer or as a chopper. In this case in particular, the tool blades can also be referred to as chopper blades.
  • the tool blades 7, 8 each have a wing-like contour.
  • the tool blades 7, 8 each form an end face 9 facing the direction of rotation, while they each form a rear side 10 in the direction facing away from the direction of rotation 5.
  • the end faces 9 are each designed as flat end faces and the rear sides 10 are designed as flat rear faces, which extend in a direction parallel to the axis of rotation.
  • the end face 9 is shaped such that it has an outwardly curved contour in the plan view shown. That means it has a convex shape.
  • the rear side 10 is shaped such that it has an inwardly curved contour, that is to say it is concave.
  • the front side 9 and the rear side 10 are each connected to one another by a blunt outer section 11.
  • the tool blade 7 or 8 ends in this blunt outer section 11, so that the tool blade 7, 8 has the shape of a truncated wing.
  • the end faces 9 of the tool blades 7 and 8 are diametrically opposed with respect to the axis of rotation 2. The same applies to the rear sides 10 of the tool blades 7 and 8.
  • the outer contour of the tool element 6 is such that the outer contour of the second tool blade 8 is formed by mirroring the outer contour of the first tool blade 7 through the axis of rotation 2.
  • a reference point 12 is shown on the X axis.
  • a reference line (dash-dot line) running parallel to the Y axis through this reference point 12 is also shown. With increasing distance of this reference line from the axis of rotation 2 along the X-axis, a point intersecting this reference line on the end face 9 lies radially further away from the axis of rotation 2 than a point intersecting the reference line on the rear side 10. In the example shown, the radial is therefore Distance 13 of the front side 9 is greater than the radial distance 14 of the rear side 10.
  • the Figure 2 shows the flow conditions on the tool 1 or the tool element 6 when it is immersed in a mixture, for example solids or a pasty mass, and rotates about the axis of rotation 2 in the direction of rotation 5.
  • a mixture for example solids or a pasty mass
  • the curved shapes of the front and rear sides 9, 10 create areas along which the mixed material flows at different flow rates. Since the end face 9 is relatively flat and elongated radially outwards, high flow velocities result on the end face 9, combined with a laminar flow. On the rear side 10, however, there is a very turbulent flow pattern with eddies in the mix. The flow velocity here is comparatively low compared to the front.
  • the different speeds result from the fact that the longer distance that is curved outwards on the end face 9 of the medium surrounding the rotating tool blade must be covered in the same time as on the inward curved rear sections 10 of the tool blade, where the inwardly curved edges Cause turbulence.
  • the different speeds result in flow stalls that lead to turbulent flows.
  • the laminar flows 15 occur in areas along the end faces 9 at high speed.
  • a turbulent flow pattern with vortex formation 16 is created due to the lower flow velocities.
  • the in the Figure 3 illustrated embodiment differs from the embodiment in the Figures 1 and 2 in that three tool elements 17, 18 and 19 are provided at the end of the rotary shaft 3, each of which likewise comprises two opposite tool blades 17a, 17b, 18a, 18b, 19a, 19b.
  • the tool sheet 19b is opposite the tool sheet 19a and therefore not visible.
  • the rotary shaft 3 rotates in operation about the axis of rotation 2 in the direction of rotation 5.
  • the uppermost tool element 17 is aligned parallel to the lower tool element 19 with respect to the axis of rotation 2.
  • the middle tool element 18 is arranged at an angular offset with respect to the upper tool element 17 and the lower tool element 19. This also results in the vertical direction, i.e. in the direction of the axis of rotation 2, between the tool elements 17, 18 and 19 in each case turbulent flows 16, which also ensure mixing in the vertical direction.
  • the structure of the tool elements 17, 18, 19 or the tool blades is explained by way of example on the uppermost tool element 17.
  • the uppermost tool element 17 comprises a flat top component 17c and an equally shaped bottom component 17d, which are arranged parallel to one another at a distance and by the peripheral edge, which, among other things, the Forms end and rear sides 9, 10, connected to one another, so that a cavity is formed in the interior of the tool blade 17a, 17b or the tool element 17.
  • the tool blades 17a and 17b share a common top component 17c and a common bottom component 17d, so that the tool blades 17a and 17b are partially integrally formed.
  • a plurality of nozzles 20 are formed for introducing additives into the mixture.
  • the nozzles 20 are connected to the cavity of the respective tool blade, the cavity also being connected to a passage in the shaft 3. Through the passage and the cavity, additives such as gases, liquids or solids or combinations thereof can be passed through the nozzles 20 and thus introduced into the mix.
  • the rotation of the tool 1 creates turbulent flow conditions 16 through the tool elements 17, 18 and 19, which also lead to internal friction between these multiphase flows. Pressure fluctuations occur between the areas of laminar flow and turbulent flow, which cause additional mixing. As a result, additives are evenly distributed. The introduction of additives also loosens the mix and supports the mixing positively.
  • the Figure 4 shows a sectional view of a tool 1 according to a further embodiment of the invention.
  • the structure of the tool elements corresponds to that of the tool elements Figure 3 , Tool blades 7, 8 are provided at the lower end of the rotary shaft 3.
  • the rotary shaft 3 is also designed here as a hollow shaft and has a bushing 21 in its interior in the form of a line, which is connected to the nozzles 20 of the tool blades 7, 8 at the lower end of the rotary shaft 3.
  • Inside the rotary shaft 3 is a bushing 22 provided for introducing or supplying a temperature control agent (temperature control water).
  • the implementation 22 is referred to as the inflow implementation.
  • the bushing 22 for the temperature control water is formed by the hollow inner section 4 of the rotary shaft 3, the bushing 21 for the additive (additive bushing) being arranged inside the inner section 4, so that a temperature control water flowing through the inner section 4 leads to the bushing 21 washed around for the additive.
  • two lines 23 ( Figure 6 ) are provided, which are also arranged in the bushing for the temperature control water, but ensure that the temperature control water runs off. These are referred to as drain bushings.
  • a holder 24 is arranged, with which the tool 1 can be attached to a mixer lid or the like.
  • a drive 25 for rotationally driving the rotary shaft 3 is also provided.
  • the Figure 5 shows the upper section of the tool 1 from the Figure 4 in the sectional view, but rotated by 90 ° around the axis of rotation.
  • a feed 26 or a connection for the temperature control water is provided in the upper area of the rotary shaft 3.
  • the temperature control water can be introduced into this inlet 26 into the inner section 4 or the inlet duct 22, so that it flows into the interior between the inside of the rotary shaft 3 and the additive duct 21.
  • the additive feedthrough 21 is arranged centrally in the rotary shaft 3 in the form of a tube. When the temperature control water reaches the inner section 4 via the feed 26, it flows downwards in the direction of the tool blades.
  • the additive feedthrough 21 is connected to the hollow interior of the individual tool elements or tool blades, which by curved arrows is indicated.
  • the tool elements or tool blades have a large number of nozzles 20 on the circumference.
  • the additive reaches the interior of the tool blades 7, 8 and is introduced into the mixture through the nozzles 20, the shape of the tool blades 7, 8 as explained above, which produces advantageous swirling effects.
  • the additives reach the tool blades 7, 8, they are tempered by the temperature control water in the leadthrough 22.
  • the temperature control can consist of cooling or heating the additives.
  • the bushings 23 serving as a drain for the temperature control water are also arranged in the form of lines in the inner section 4. These drain bushings 23 are arranged on opposite sides of the additive bushing 21. In the lower area, the drain bushings 23 have an opening 27 which are connected to the inlet bushing 22 for the temperature control water. The temperature control water can thus be sucked off and pumped up through the outlet passages 23 after passing through the inner section 4 in the lower region of the tool 1. The openings 27 protrude in the lower region of the tool 1 into a circumferential ring channel. As the Figure 6 further shows, spacers 28 are provided between the inner wall of the rotary shaft 3 and the drain bushings 23, which ensure the secure fit of the drain bushings 23 in the rotating rotary shaft 3.
  • the Figure 7 shows the upper section of the tool 1 from the Figure 4 ,
  • the drain bushings 23 end in a drain 29 with a radial rotary inlet.
  • the temperature control water is taken from the drain bushings 23 and can be supplied to a heat exchanger (not shown) or another receptacle for the temperature control water that flows away.
  • This heat exchanger not shown, can are also connected to the feeder 26 for the feedthrough for the temperature control water, so that a temperature control circuit can be set up.
  • At the upper end of the rotary shaft 3 there is also an axial rotary lead-in 30, via which the additives or the additive can be introduced into the additive feedthroughs 21, which is indicated by an arrow pointing downward.
  • FIG 8 is again the lower section of the tool 1 from the Figure 4 shown in a viewing direction along the axis of rotation.
  • the openings 27, which open into a circulation channel 31, are shown.
  • This circulation channel 31 is connected to the inner section 4 or the inlet duct 22, so that an optimal outflow of the temperature control water is always guaranteed even when the openings 27 rotate.

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  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Claims (15)

  1. Outil (1) pour un mélangeur avec un conteneur pour recevoir du produit à mélanger, dans lequel l'outil (1) tourne dans une première direction de rotation (5) autour d'un axe de rotation (2), pour broyer et/ou mélanger le produit à mélanger sachant que l'outil (1) comporte un arbre de rotation (3) avec au moins une lame d'outil (7, 8, 17a, 17b, 18a, 18b, 19a, 19b) s'étendant radialement vers l'extérieur depuis l'arbre de rotation (3), sachant que la lame d'outil (7, 8, 17a, 17b, 18a, 18b, 19a, 19b) constitue dans la première direction de rotation (5) une face avant (9) et dans une direction opposée à la première direction de rotation (5) une face arrière (10),
    sachant que la face avant (9) comporte dans un plan perpendiculaire à l'axe de rotation (2) un profil courbé vers l'extérieur et la face arrière (10) comporte dans un plan perpendiculaire à l'axe de rotation (2) un profil courbé vers l'intérieur, sachant que
    la lame d'outil (7, 8, 17a, 17b, 18a, 18b, 19a, 19b) comporte au moins une buse (20) pour acheminer des gaz, des liquides et/ou des matières solides et la lame d'outil (7, 8, 17a, 17b, 18a, 18b, 19a, 19b) se termine en direction radiale dans une section extérieure tronquée (11), caractérisé en ce que la lame d'outil (7, 8, 17a, 17b, 18a, 18b, 19a, 19b) comporte au moins plusieurs buses (20) sur la face avant (9).
  2. Outil selon la revendication 1, caractérisé en ce que plusieurs buses (20) sont réparties sur la lame d'outil (7, 8, 17a, 17b, 18a, 18b, 19a, 19b) de telle manière qu'au moins un nombre de buses (20) comporte une distance différente par rapport à l'axe de rotation (2) de l'arbre de rotation (3).
  3. Outil selon la revendication 1 ou 2, caractérisé en ce que la lame d'outil (7, 8, 17a, 17b, 18a, 18b, 19a, 19b) comporte sur la face arrière (10) plusieurs buses (20) .
  4. Outil selon l'une quelconque des revendications précédentes, caractérisé en ce que la section extérieure tronquée (11) comporte au moins une buse (20) .
  5. Outil selon l'une quelconque des revendications précédentes, caractérisé en ce que la lame d'outil (7, 8, 17a, 17b, 18a, 18b, 19a, 19b) s'étend dans une première direction radialement vers l'extérieur et en ce qu'avec une distance croissante dans la première direction depuis l'axe de rotation (2), la distance radiale (13) entre la face avant (9) et l'axe de rotation (2) est plus grande que la distance radiale (14) entre la face arrière (10) et l'axe de rotation (2) .
  6. Outil selon l'une quelconque des revendications précédentes, caractérisé par au moins deux lames d'outil (7, 8, 17a, 17b, 18a, 18b, 19a, 19b) opposées dans un plan perpendiculairement à l'axe de rotation (2) .
  7. Outil selon la revendication 6, caractérisé en ce que les lames d'outil (7, 8, 17a, 17b, 18a, 18b, 19a, 19b) sont reliées l'une à l'autre intégralement au moins en partie.
  8. Outil selon la revendication 7, caractérisé en ce que les lames d'outil opposées comportent un composant de surface commun (17c) et un composant de face inférieure commun (17d), qui sont disposés à une distance l'un par rapport à l'autre de telle manière qu'un espace creux est constitué entre eux.
  9. Outil selon l'une quelconque des revendications précédentes, caractérisé en ce que plusieurs lames d'outil (17a, 17b, 18a, 18b, 19a, 19b) sont disposées l'une derrière l'autre sur l'arbre de rotation (3) en direction de l'axe de rotation (2).
  10. Outil selon la revendication 9, caractérisé en ce que des lames d'outil (17a, 17b, 18a, 18b, 19a, 19b) adjacentes dans la direction de l'axe de rotation (2) sont disposées avec un déport angulaire.
  11. Outil selon l'une quelconque des revendications précédentes, caractérisé en ce que l'arbre de rotation (3) et au moins une lame d'outil (7, 8, 17a, 17b, 18a, 18b, 19a, 19b) comportent un passage pour les gaz, les liquides et/ou les matières solides.
  12. Outil selon la revendication 11, caractérisé par un dispositif de thermorégulation disposé de préférence dans l'arbre de rotation (3) pour thermoréguler les gaz, les liquides et/ou les matières solides.
  13. Outil selon la revendication 12, caractérisé en ce que le dispositif de thermorégulation comporte un passage (22) pour des moyens de thermorégulation, sachant que le passage (21) pour les gaz, les liquides et/ou les matières solides est disposé au moins en partie dans le passage (22) pour les moyens de thermorégulation.
  14. Mélangeur pour mélanger du produit à mélanger avec un outil (1) selon l'une quelconque des revendications précédentes.
  15. Utilisation d'un outil selon l'une quelconque des revendications 1 à 14 en tant qu'hacheur.
EP16205611.3A 2016-01-05 2016-12-21 Outil pour un mélangeur, mélangeur comprenant l'outil et utilisation de l'outil Active EP3192582B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016100147.3A DE102016100147A1 (de) 2016-01-05 2016-01-05 Werkzeug für eine Mischvorrichtung und Mischvorrichtung

Publications (2)

Publication Number Publication Date
EP3192582A1 EP3192582A1 (fr) 2017-07-19
EP3192582B1 true EP3192582B1 (fr) 2020-02-26

Family

ID=57614186

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Application Number Title Priority Date Filing Date
EP16205611.3A Active EP3192582B1 (fr) 2016-01-05 2016-12-21 Outil pour un mélangeur, mélangeur comprenant l'outil et utilisation de l'outil

Country Status (2)

Country Link
EP (1) EP3192582B1 (fr)
DE (1) DE102016100147A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2113960C3 (de) * 1970-11-24 1981-06-19 Draiswerke Gmbh, 6800 Mannheim Vorrichtung zum kontinuierlichen Mischen von Feststoffen mit Flüssigkeiten
NL157510B (nl) 1973-06-15 1978-08-15 Nautamix Patent Ag Menginrichting.
DE4104621A1 (de) * 1991-02-15 1992-08-20 Abs Pumpen Ag Propeller zum ruehren, mischen und/oder antreiben von fluessigkeiten
JPH0538423A (ja) * 1991-06-26 1993-02-19 Shoshu Kin 気体溶解装置
DE9412503U1 (de) * 1994-08-03 1994-11-24 Wrobel Jan Vorrichtung zum Begasen und Rühren von Flüssigkeiten
DE19723325C1 (de) 1997-06-04 1999-01-28 Alhard Ruberg Flüssigkeitszugabevorrichtung und Chargenmischer zum Mischen trockener und/oder angefeuchteter Feststoffe und Flüssigkeitszugabe
DE19857775A1 (de) * 1998-12-04 2000-06-08 Ver Energiewerke Ag Vorrichtung zur Vermischung und Behandlung von trockenen Schüttgütern und wasserhaltigen Substanzen
US7997788B2 (en) * 2007-10-25 2011-08-16 Midan Industries Ltd. Submersible mixing propeller

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
EP3192582A1 (fr) 2017-07-19
DE102016100147A1 (de) 2017-07-06

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