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EP3283204B1 - Dispositif et procédé de mélange, en particulier de dispersion - Google Patents

Dispositif et procédé de mélange, en particulier de dispersion Download PDF

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Publication number
EP3283204B1
EP3283204B1 EP16714306.4A EP16714306A EP3283204B1 EP 3283204 B1 EP3283204 B1 EP 3283204B1 EP 16714306 A EP16714306 A EP 16714306A EP 3283204 B1 EP3283204 B1 EP 3283204B1
Authority
EP
European Patent Office
Prior art keywords
gap
forming element
openings
process area
forming
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
EP16714306.4A
Other languages
German (de)
English (en)
Other versions
EP3283204A1 (fr
Inventor
Eduard Nater
Achim Philipp Sturm
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.)
Buehler AG
Original Assignee
Buehler AG
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Filing date
Publication date
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Publication of EP3283204A1 publication Critical patent/EP3283204A1/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
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/17—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing
    • B01F27/171—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing for disintegrating, e.g. for milling
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/161—Arrangements for separating milling media and ground material
    • 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
    • B01F27/2123—Shafts with both stirring means and feeding or discharging means
    • 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
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • 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
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B01F27/2712—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator provided with ribs, ridges or grooves on one 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
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B01F27/2713—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator the surfaces having a conical shape
    • 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
    • B01F27/41—Mixers with rotor-rotor system, e.g. with intermeshing teeth with the mutually rotating surfaces facing each other
    • 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
    • B01F27/41—Mixers with rotor-rotor system, e.g. with intermeshing teeth with the mutually rotating surfaces facing each other
    • B01F27/412—Mixers with rotor-rotor system, e.g. with intermeshing teeth with the mutually rotating surfaces facing each other provided with ribs, ridges or grooves on one surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/20—Disintegrating by mills having rotary beater elements ; Hammer mills with two or more co-operating rotors
    • B02C13/205—Disintegrating by mills having rotary beater elements ; Hammer mills with two or more co-operating rotors arranged concentrically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/166—Mills in which a fixed container houses stirring means tumbling the charge of the annular gap type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details

Definitions

  • the present invention relates to a device and a method for mixing, in particular dispersing, according to the preamble of the independent claims.
  • mixing is understood to mean combining substances or substance flows in such a way that a composition that is as uniform as possible is achieved;
  • mixing is used in particular to produce dispersions, that is to say dispersing.
  • a dispersion is understood here to be a heterogeneous mixture of at least two substances which do not or hardly dissolve in one another or which combine chemically with one another.
  • one substance (disperse phase) is distributed as finely as possible into another substance (dispersion medium or continuous phase), if necessary using grinding aids;
  • agitator mills for example, spherical auxiliary grinding bodies are often used.
  • the present invention relates above all to (the production of) suspensions - that is to say dispersions in which a liquid forms the continuous phase and a solid forms the disperse phase.
  • dispersions in which a liquid forms the continuous phase and a solid forms the disperse phase.
  • the comminution can typically be the dissolution of agglomerates into primary particles. Aggregates or associates (if agglomeration is brought about by van der Wals forces or stronger types of chemical formation) can, however, be comminuted when dispersed into primary particles.
  • agglomerates can also be dissolved in devices without auxiliary grinding bodies, such as in a disperser or dissolver
  • devices with auxiliary grinding bodies are required for the comminution of aggregates or crystals, such as an agitator mill with spherical auxiliary grinding bodies.
  • aggregates in the broader sense can also be understood to mean larger crystalline or amorphous structures. In the case of the comminution of aggregates, crystalline or amorphous structures, this is referred to as true comminution.
  • Apparatus of the generic type for mixing two substances usually have a housing and a rotor rotating therein.
  • the substances are introduced into the housing by means of at least one feed line.
  • the substances are mixed by means of the rotor and then discharged from the housing.
  • the device for dispersing comprises a chamber for dispersing, at least one stirring disk, an inlet through which the liquid with the material to be treated and the dispersion medium are sucked in by the rotation of the stirring disk, an outlet and a separating device.
  • the separation device is arranged at the outlet.
  • the auxiliary grinding bodies are removed by means of the separating device separated from the dispersion.
  • the separation device can discharge the dispersion through the outlet, with the grinding aids being retained as described.
  • the DE 10 2010 053 484 discloses an agitator ball mill with a separating device for auxiliary grinding bodies, the separating device being arranged around an axis of rotation.
  • the separating device consists of two components, one component being at least one separating device and a second component being a dynamic element for generating a material flow.
  • the device comprises a very small dynamic gap as a separating device, so that the delivery rate is reduced.
  • the DE 1 507 493 discloses an agitator ball mill with disk-shaped agitating tools in a cylindrical housing, one or two disks being attached above the rotor which produce dynamic gaps with stator elements.
  • the delivery rate is very limited due to the small number of outlet gaps.
  • the possibility of the mixture emerging from the device is only possible very locally.
  • the DE 35 21 668 discloses an agitator mill in which the separating device for separating the grinding media consists of a sieve. Such a sieve can easily become clogged and thus increases the maintenance frequency of the device.
  • the pamphlet EP0376001 A1 discloses an agitator mill with separator and rotating cage.
  • the throughput is increased in that the separating device has an effective area, the size of which is at least 20% of the inner area of the grinding container that delimits the grinding space.
  • the flow through the grinding device is rapid and the material to be ground must very often through the Device are guided in order to achieve sufficient shredding performance.
  • the pamphlet U.S. 4,136,971 discloses an apparatus for generating acoustic oscillations in a liquid.
  • the liquid flows through openings in the periphery of a rotor and a stator.
  • the openings are brought into congruence at regular time intervals, the number of openings in the rotor being a multiple of the number of openings in the stator.
  • the pamphlet U.S. 3,195,867 discloses an apparatus for homogenizing liquids comprising an annular stator having helically arranged circular openings and a rotor rotating about the stator having two sets of axially extending openings.
  • the shape of the openings should provide a circulation effect.
  • the pamphlet EP 0 420 981 A1 discloses an apparatus for generating acoustic vibrations in a liquid.
  • the device comprises a rotor and a stator arranged therein, each of which has continuous channels. At least one channel of the rotor coincides with a channel of the stator.
  • JP 2015 029943 discloses a multi-stage gap separator comprising an apertured rotor and an apertured stator, the rotor being rotatably disposed within the cylindrical stator.
  • the gap separator is arranged in a container in such a way that the material to be processed in the container below the separator is stirred by a stirring element and is removed from the container through the gap separator.
  • the object is achieved by a device and a method for mixing according to the characterizing part of the independent claims.
  • the object is achieved by a device according to claim 1.
  • the openings of the first gap-forming element and the openings of the second gap-forming element are arranged in such a way that a mixture of the supplied substances can be conducted through the openings in the two gap-forming elements from the first into the second process area.
  • Such a device leads to a high throughput without the risk of clogging.
  • the gap-forming elements must be rotatable relative to one another, so that both elements can also be designed to be rotatable. In this case, the rotational speeds and / or the direction of rotation must differ.
  • the openings in the gap-forming elements are arranged in such a way that the openings do not overlap and material can only pass from the openings of the first gap-forming element to the openings of the second gap-forming element through a gap between the openings. After passing through the gap, the openings should allow a large flow of material and therefore have a large opening diameter / opening cross-section compared to the gap.
  • the gap according to the invention is formed between the two gap-forming elements.
  • the smallest dimension of the openings in the first gap-forming element is preferably at least 3 times as large as the largest dimension of the gap between the two gap-forming elements. It is also preferred the smallest dimension of the openings in the second gap-forming element at least 3 times as large as the largest dimension of the gap between the two gap-forming elements.
  • the dimensions of the annular gaps must, of course, essentially correspond to the dimensions of the gap between the gap-forming elements or be smaller than the gap between the gap-forming elements.
  • a high flow rate is achieved through a large number of annular gaps.
  • the gap according to the invention between the first gap-forming element and the second gap-forming element has a separating function. The expansion of the gap prevents particles that are larger than the gap from entering the second process area.
  • At least one, preferably two, preferably dynamic, gaps can be formed between the housing and the first gap-forming element.
  • the first gap-forming element can surround the second gap-forming element and a gap of at most 3 mm, preferably 1.0 mm and particularly preferably 0.5 mm can be formed between the two elements.
  • the minimum gap has a transverse dimension of 0.1 mm.
  • a gap is formed between the two gap-forming elements, the maximum extent of which is smaller than the smallest element of the grinding media that is in the device are or are filled.
  • the gap is preferably a maximum of half as large as the diameter of the smallest grinding body.
  • the first gap-forming element is preferably designed as a rotor, so that the grinding tools on the rotor are used to generate the movement of the materials supplied and possibly the grinding media, thus achieving dispersion in the first process area.
  • the first gap-forming element can extend essentially completely along a length of the first process region. In this way, a large area is provided with gaps that cannot clog and still achieve a large flow.
  • grinding media can be filled, the forwarding of which into the second process area can be prevented by gaps, in particular dynamic gaps.
  • the dynamic gaps can be formed between the first gap-forming element and the second gap-forming element and additionally between the first gap-forming element and the housing. This means that only ready-dispersed material arrives into the second process area and blockage of the gap is not possible due to the movement at the gap edges.
  • no static separating device is formed between the first and the second process area.
  • a static separator is one in which the edges of the openings through which the mixture passes do not move. Static separation devices are therefore in particular permanently mounted screens.
  • the second gap-forming element can be designed as a static separating device, the openings in the static separating device preferably being smaller than the minimum diameter of the grinding media.
  • the openings in the static separating device are particularly preferably formed by annular gaps.
  • Such a static separating device reliably keeps grinding media and excessively large particles from the second process area.
  • Both gap-forming elements can be cylindrical or conical.
  • the gap-forming elements could be designed as circular disks, which are arranged between the first and the second process area.
  • the gap between the first gap-forming element and the second gap-forming element can have a longitudinal extent which is formed parallel to the axis of rotation.
  • the gap can be formed essentially perpendicular to the axis of rotation.
  • the gap can be formed at an angle of 1 ° to 89 ° to the axis of rotation.
  • the openings of the gap-forming elements extend over a length of at least 50%, preferably 60%, particularly preferably 70% of the length of the first gap-forming element in the first process area. A high throughput can thus be achieved.
  • the relative information does not relate to the extent of the openings, but to the area that is provided with openings.
  • two or more bores on the circumference of the second gap-forming element can be connected to one another by a groove, preferably a milled groove. Of course, the groove must not overlap with the openings in the first gap-forming element. This allows a large outflow volume to be created and the mixture is quickly discharged into the second process area.
  • the housing of the device can further comprise a pump housing or be connected to a pump housing, which is a Pump forms on the housing of the device.
  • the pump housing and housing of the device can be designed in one piece or in several pieces. In the case of a multi-piece design, the pump housing is preferably flanged onto the housing of the device.
  • a pump is arranged in the pump housing. Thus, the required pump is directly connected to the device for mixing and only one control and fewer external lines are necessary.
  • the same shaft can be used to drive the pump as to drive the moving gap-forming element and / or the grinding tools. This leads to fewer individual parts and therefore less complexity.
  • the pump housing includes a pump inlet and a pump outlet.
  • the pump can be a centrifugal pump, a liquid ring pump, a side channel pump or a displacement pump such as an impeller pump.
  • the object is also achieved by a method according to claim 10.
  • the dispersion in the first process area can be achieved using grinding media and / or grinding tools. Grinding tools can be disks or pins or similar grinding tools that are already known from the prior art. Grinding media are hard, round or elliptical bodies that help disperse the material. The grinding media are adapted to the desired degree of dispersion and can also have a different size depending on the substance introduced. The grinding media are held up by the gap / the gap between the gap-forming elements and / or the housing.
  • the dispersion can be achieved by grinding media which have a diameter which is at least 1.5 times, preferably 3 times, in particular 10 times larger than the transverse dimension of the largest gap.
  • the grinding media cannot pass through the gap and the gap serves as a dynamic separating device.
  • the mixture can be passed through at least 4, preferably 20, particularly preferably 100, openings in the first gap-forming element.
  • the mixture can furthermore by at least 4, preferably at least 50, particularly preferably min. 200 openings are passed in the second gap-forming element.
  • An optimized throughput of mixture can thus be achieved through the number of openings.
  • the openings in the second gap-forming element can be at least partially formed by bores.
  • two or more bores on the circumference can be connected to one another by a groove, preferably a milled groove.
  • the groove must not overlap with the openings in the first gap-forming element. This allows a large outflow volume to be created and the mixture is quickly discharged into the second process area.
  • FIGS. 1 to 13 each show different views of different embodiments of the gap-forming elements 7, 9. Each of these embodiments can be installed in a housing 2 of a device 1.
  • the Figures 1 to 3 show a first embodiment of the gap-forming elements 7, 9.
  • Figure 1 shows a section, Figure 2 a view and Figure 3 a view of a section.
  • the first gap-forming element 7 is cylindrical and surrounds the second gap-forming element 9.
  • the second gap-forming element 9 is also cylindrical.
  • the first gap-forming element 7 comprises openings 8 which are rectangular in shape, the corners of the openings 8 being rounded.
  • the second gap-forming element 9 comprises openings 10 which are round.
  • the openings 8 and the openings 10 do not overlap.
  • Gaps 13 are formed between the openings 8 and the openings 10.
  • At least one of the two gap-forming elements 7, 9 is designed to be rotatable about the axis of rotation 11. This creates dynamic gaps 13.
  • the first gap-forming element 7 is directed towards the first process area 4, while the second gap-forming element 9 is directed towards the second process area 5.
  • the second gap-forming element 9 further comprises a connecting groove 29 which connects the openings 10 along the circumference of the second gap-forming element. This enables the mixture to be transported away more effectively after passing through the gap.
  • the connecting groove 29 also does not overlap with the openings 8 of the first gap-forming element 7.
  • the openings 8 have an area of 15 ⁇ 30 mm
  • the openings 10 have a diameter of 12 mm in the region of the bore.
  • the openings 10 are connected in the circumferential direction by a groove which has an extension of 13 mm.
  • the necessary expansion of the openings 8, 10 is at least three times the largest diameter of the grinding media used, if grinding media are used.
  • the Figures 4 to 7 show a second embodiment of the gap-forming elements 7, 9.
  • Figure 4 shows here a view Figure 5 a cut, Figure 6 an oblique view and Figure 7 a view of a section.
  • the two gap-forming elements 7 and 9 are circular disk-shaped.
  • the first gap-forming element 7 comprises openings 8 which are round are.
  • the second gap-forming element 9 comprises openings 10 which are also round.
  • the openings 8 do not overlap with the openings 10. This creates a gap 13 through which the mixture can pass from the first process area 4 (not shown) into the second process area 5 (not shown).
  • At least one of the gap-forming elements 7, 9 is designed to be rotatable about the axis of rotation 11.
  • the Figures 8 to 10 show a third embodiment of the gap-forming elements 7, 9.
  • Figure 8 shows a section, Figure 9 a view and Figure 10 a view of a section.
  • the first gap-forming element 7 is directed towards the first process area 4 (not shown) and the second gap-forming element 9 is directed towards the second process area 5.
  • the first gap-forming element 7 comprises openings 8 which are round.
  • the first gap-forming element 7 completely surrounds the second gap-forming element 9, both gap-forming elements 7 and 9 being rotationally symmetrical and conical.
  • the second gap-forming element 9 comprises openings 10 which are also round.
  • At least one of the gap-forming elements 7, 9 is designed to be rotatable about the axis of rotation 11.
  • the openings 8 and the openings 10 do not overlap, but rather form gaps 13 (inserted by way of example) through which the mixture can flow from the first process area 4 (not shown) into the second process area 5.
  • Figures 11 to 13 show a further embodiment of the gap-forming elements 7, 9.
  • Figure 11 shows a section, Figure 12 a view and Figure 13 a section through the plane BB of Figure 11 .
  • the embodiment from the Figures 11 to 13 corresponds essentially to the embodiment from FIG Figures 1 to 3 apart from the shape and the number of openings 8.
  • the openings 8 in the first gap-forming element 7 are asymmetrically shaped and, unlike the openings 8 from the embodiment of FIG Figures 1 to 3 a ramp 19.
  • the ramp 19 serves as a flow-optimized embodiment for rejecting grinding media when the first gap-forming element 7 is designed as a rotor.
  • the number of openings 8 is eight openings 8 in the circumferential direction and four in the longitudinal direction, therefore a total of 32 openings 8 in the first gap-forming element 7. The mixture can thus more easily reach the openings 8 and a higher flow rate into the second process area 5 is achieved.
  • the first gap-forming element 7 is designed to be rotatable about the axis of rotation 11.
  • the ramp 19 has an inclination (alpha) to the tangent on the inside diameter of the first gap-forming element (7) of 10 ° to 80 °, preferably 30 °.
  • the Figures 14 to 16 show the embodiment of the gap-forming elements 7, 9 from FIGS Figures 1 to 3 with grinding tools 14 and a conveyor element 18.
  • Figure 14 shows a section, Figure 15 a view and Figure 16 a view of a section.
  • the first gap-forming element 7 comprises openings 8 and grinding tools 14.
  • the first gap-forming element 7 is designed as a rotor, so that the grinding tools 14 can contribute to a dispersion of the substances in the first process area 4 (not shown).
  • the gap-forming element 9 surrounds the second process area 5.
  • the second gap-forming element 9 comprises openings 10.
  • a conveying element 18 is arranged, which is designed to be rotatable about axis of rotation 11, just like the first gap-forming element 7, 3.
  • the conveying element conveys the mixture out of the second process area 5 and thus ensures a good throughput through the device.
  • Figure 17 shows the embodiment from Figure 1 to 3 with the gap-forming elements 7, 9 and the openings 8, 10. At least one of the gap-forming elements 7, 9 is designed to be rotatable about the axis of rotation 11.
  • Figure 18 shows a section A from Figure 17 .
  • the illustration shows the first gap-forming element 7 with the second gap-forming element 9 and the gap section 24 formed between the gap-forming elements 7 and 9.
  • the gap section 24 has a length dimension b and a transverse dimension a.
  • the transverse dimension a of the gap section 24 is smaller than the smallest grinding media that can be filled into the first process area 4 (not shown).
  • the second gap-forming element 9 can be designed to be exchangeable, so that the gap 24 is designed to be adaptable to the grinding media 16 (not shown), even if the grinding media 16 have a different size in a first process than in one further process.
  • the transverse dimension a of the gap section 24 corresponds to the transverse dimension of the gap 13 (see Fig. 17 ).
  • the Figures 19 to 21 show a further embodiment of the gap-forming elements 7, 9.
  • Figure 19 shows a section, Figure 20 a view and Figure 21 a view of a section.
  • the gap-forming element 7 is analogous to the gap-forming element 7 from FIG Figures 1 to 3 educated.
  • the second gap-forming element 9 is designed in such a way that it comprises a plurality of annular gaps 20.
  • the annular gaps 20 are dimensioned in such a way that only sufficiently dispersed material can enter the second process area 5.
  • possibly existing grinding media 16 (not shown) from the first process area 4 (not shown) can be used shown) do not pass through the annular gap 20.
  • At least one of the gap-forming elements 7, 9 is designed to be rotatable about the axis of rotation 11.
  • the annular gaps 20 are stabilized by stabilizing webs 25.
  • Figures 22 to 24 show a further embodiment of the second gap-forming element 9.
  • the first gap-forming element 7 corresponds to the first gap-forming element from FIG Figures 1 to 3 .
  • Figure 22 shows a section, Figure 23 a view and Figure 24 a view of a section.
  • the first gap-forming element 7 comprises openings 8 which are analogous to the Figures 1 to 3 are trained.
  • the second gap-forming element 9 comprises openings 10 and additional annular gaps 20.
  • the annular gaps 20 are arranged in such a way that they overlap with the openings 8 in the first gap-forming element 7. Only already dispersed mixture can pass through the annular gap 20 and larger particles are kept away. This embodiment thus enables a larger passage, since the annular gap enables a larger passage volume
  • the Figures 25 and 26 show the arrangement of a first and second gap-forming element 7, 9 according to FIGS Figures 14 to 16 in a device 1.
  • Figure 25 shows here a section and Figure 26 a view of a section.
  • the device 1 comprises a housing 2 which contains a first gap-forming element 7 and a second gap-forming element 9.
  • An inlet 3 is formed in the housing 2.
  • the substances to be mixed are introduced into the first process area 4 through the inlet 3.
  • the first process area 4 further comprises grinding media 16.
  • the housing 2 is equipped with grinding tools 14 on the housing wall. Corresponding grinding tools 14 are formed on the first gap-forming element 7.
  • the dispersed Mixture passes from the first process area 4 through gaps 12, 13 into the second process area 5.
  • a conveying element 18 is formed which rotates about the axis of rotation 11. Furthermore, the first gap-forming element 7 also rotates about the axis of rotation 11. The mixture exits the second process area 5 through the outlet 6 from the housing.
  • the gaps 12, 13 are smaller than the diameter of the grinding media 16. Thus, no grinding media 16 can get into the second process area 5.
  • the length of the first process area 15 essentially corresponds to the length of the first gap-forming element 7.
  • the embodiment of the device 1 in FIGS Figures 27 and 28 corresponds essentially to the embodiment of FIG Figures 25 and 26 .
  • the device 1 additionally comprises a pump housing 21 of a water ring pump.
  • the pump housing 21 is flanged onto the housing 2 and comprises a pump inlet 23 and a pump outlet 22. From the pump outlet 22 premix is pumped to the inlet 3 of the device.
  • the Figure 27 shows here a section and the Figure 28 a view of a section.
  • the device 1 has an inlet 3 and an outlet 6 in the housing 2.
  • there are no auxiliary grinding bodies in this embodiment there are no auxiliary grinding bodies in this embodiment. However, it is of course possible to fill this in if this is desired.
  • the first process area extends essentially along the first gap-forming element 7. A high throughput can thus be achieved.
  • the advantage of the simultaneous formation of a pump lies in particular in the simplified control.
  • the Figures 29 and 30 show a further embodiment of the device 1.
  • the Figure 29 shows here a section and the Figure 30 a view of a section.
  • a side channel pump is arranged in the pump housing 21 in this embodiment.
  • the pump housing also comprises a pump inlet 23 and a pump outlet 22.
  • the premix is pumped from the pump outlet 22 into the inlet 3 of the device.
  • the design of the device apart from the pump housing 21 essentially corresponds to the embodiment in FIG Figures 25 and 26 .
  • Figure 31 shows an alternative embodiment of the device 1 in which the gap-forming elements 7, 9 only extend over a partial area of the first process area 4.
  • grinding tools 14 in the form of disks with holes are also designed.
  • the first gap-forming element 7 rotates around the second gap-forming element 9.
  • Both gap-forming elements 7, 9 each have openings 8, 10.
  • the mixture flows from the first process area 4 through the gap 13 into the second process area 5.
  • the housing 2 also has an inlet 3 and outlets 6.
  • the grinding tools 14 are arranged on a shaft 26.
  • the shaft 26 comprises a shaft groove 27 in which engagement cams 28 of the first gap-forming element 7 engage.
  • the first gap-forming element is driven by the same shaft as the grinding tools 14.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Crushing And Grinding (AREA)
  • Accessories For Mixers (AREA)

Claims (14)

  1. Appareil (1) pour le mélange, en particulier la dispersion, comprenant
    - un logement (2) avec au moins une entrée (3),
    - une première zone de traitement (4) pour le mélange et en particulier la dispersion des substances fournies, les substances pouvant être introduites dans la première zone de traitement (4) par l'intermédiaire d'au moins une entrée (3),
    - une deuxième zone de traitement (5) pour le déchargement du mélange vers une sortie (6),
    - un premier élément de clivage (7) associé à la première zone de traitement (4) et comprenant des ouvertures (8), dans lequel le premier élément de clivage (7) est un rotor,
    - un deuxième élément de clivage (9) qui est associé à la deuxième zone de traitement (5) et qui correspond au premier élément de clivage (7), le deuxième élément de clivage (9) comportant des ouvertures (10), le deuxième élément de clivage étant conçu comme un dispositif de séparation statique,
    - dans lequel le rotor est conçu pour pouvoir tourner autour d'un axe de rotation (11) par rapport à l'autre élément de clivage (9),
    où
    les ouvertures (8) du premier élément de clivage (7) et les ouvertures (10) du deuxième élément de clivage (9) sont disposées de telle sorte qu'elles ne se chevauchent pas et qu'un mélange des matériaux amenés est amené par les ouvertures (8, 10) des deux éléments de clivage (7, 9) peut être amené du premier (4) dans la deuxième zone de traitement (5), le transfert de matériau des ouvertures du premier élément de clivage aux ouvertures du deuxième élément de clivage n'étant possible que par un intervalle entre les ouvertures, et dans lequel des outils de broyage (14) sont disposés sur le premier élément de clivage (7) et/ou sur le logement (2), lesquels outils de broyage sont conçus pour la dispersion des substances introduites dans la première zone de traitement (4), caractérisé en ce que les ouvertures des éléments de clivage s'étendent sur une longueur d'au moins 50 % du premier élément de clivage dans la première zone de traitement.
  2. Appareil selon la revendication 1, caractérisé en ce qu'au moins un, de préférence deux, de préférence des espaces dynamiques (12) sont formés entre le logement (2) et le premier élément de clivage (7).
  3. Appareil (1) selon l'une des revendications précédentes, caractérisé en ce que le premier élément de clivage (7) entoure le deuxième élément de clivage (9) et un espace (13) de 3 mm au maximum, de préférence 1,0 mm et en particulier de préférence 0,5 mm est formé entre les deux éléments (7, 9) .
  4. Appareil (1) selon l'une des revendications précédentes, caractérisé en ce que le premier élément de clivage (7) s'étend sensiblement complètement sur une longueur (15) de la première zone de traitement (4).
  5. Appareil (1) selon l'une des revendications précédentes, caractérisé en ce que des corps de broyage (16) peuvent être introduits dans la première zone de traitement (4), dont le transfert dans la deuxième zone de traitement (5) peut être empêché par des espaces dynamiques (12, 13).
  6. Appareil selon l'une des revendications 1 à 5, caractérisé en ce que les ouvertures du dispositif de séparation statique sont plus petites que le diamètre minimum des corps de broyage.
  7. Appareil (1) selon l'une des revendications précédentes, caractérisé en ce que les deux éléments de clivage (7, 9) sont cylindriques ou coniques.
  8. Appareil selon l'une des revendications précédentes, caractérisé en ce que le logement (2) comprend un carter de pompe (21) ou que le logement (2) est relié à un carter de pompe (21), une pompe étant disposée dans le carter de pompe (21), la pompe étant de préférence entraînée par un arbre qui entraîne simultanément l'un des éléments de clivage (7, 9).
  9. Appareil selon l'une des revendications précédentes, caractérisé en ce que les clivages (13) entre les éléments de clivage (7, 9) s'étendent sur une longueur d'au moins 60%, en particulier de préférence d'au moins 70% de la longueur du premier élément de clivage (7) dans la première zone de traitement (4).
  10. Procédé pour disperser des substances dans un appareil, de préférence un appareil (1) selon les revendications 1 à 9, comprenant les étapes
    - Introduction d'au moins deux substances, de préférence un solide et un liquide, dans une première zone de traitement (4) d'un appareil (1),
    - Mélange et surtout dispersion des au moins deux substances dans la première zone de traitement (4) pour former un mélange,
    - Faire passer le mélange dans un espace (13) formé entre un premier (7) et un deuxième élément de clivage (9),
    - dans lequel les éléments de clivage (7, 9) présentent des ouvertures (8, 10) qui ne se chevauchent pas et dans lequel les deux éléments de clivage (7, 9) se déplacent l'un par rapport à l'autre, et le mélange est conduit à travers l'espace (13) et les ouvertures (8, 10) de la première zone de traitement (4) dans une deuxième zone de traitement (5), dans lequel le transfert de matière des ouvertures du premier élément de clivage aux ouvertures du deuxième élément de clivage n'est possible que par un espace entre les ouvertures, le premier élément de clivage (7) étant un rotor et le deuxième élément de clivage étant conçu comme un dispositif de séparation statique, et des outils de broyage (14) étant disposés sur le premier élément de clivage (7) et/ou sur le logement (2), lesquels outils de broyage sont conçus pour disperser les substances introduites dans la première zone de traitement (4), caractérisé en ce que les ouvertures des éléments de clivage s'étendent sur une longueur d'au moins 50 % du premier élément de clivage dans la première zone de traitement.
  11. Procédé selon la revendication 10, caractérisé en ce que le mélange est en outre passé à travers des espaces dynamiques (12) entre le premier élément de clivage (7) et un logement (2) de l'appareil (1).
  12. Procédé selon l'une des revendications 10 ou 11, caractérisé en ce que la dispersion dans la première zone de traitement (4) est obtenue par des corps de broyage (16) et/ou des outils de meulage (14).
  13. Procédé selon la revendication 12, caractérisé en ce que la dispersion est obtenue par des corps de broyage (16) qui ont un diamètre au moins 1,5 fois, de préférence 2 fois, en particulier de préférence 2,5 fois plus grand que l'interstice le plus grand (12, 13) en tant qu'extension transversale (a).
  14. Procédé selon l'une des revendications 10 à 13, caractérisé en ce que le mélange est passé à travers au moins 4, de préférence 20, en particulier de préférence 100, ouvertures dans le premier élément de clivage (7) et/ou le mélange est passé à travers au moins 4, de préférence au moins 50, en particulier de préférence au moins 200 ouvertures dans le deuxième élément de clivage (9).
EP16714306.4A 2015-04-17 2016-03-22 Dispositif et procédé de mélange, en particulier de dispersion Active EP3283204B1 (fr)

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EP15164059 2015-04-17
PCT/EP2016/056216 WO2016165917A1 (fr) 2015-04-17 2016-03-22 Dispositif et procédé de mélange, en particulier de dispersion

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CN107690354A (zh) 2018-02-13
MX2017013319A (es) 2018-08-15
JP2018513009A (ja) 2018-05-24
EP3283204A1 (fr) 2018-02-21
CN107690354B (zh) 2021-06-29
RU2017139802A (ru) 2019-05-17
JP6785791B2 (ja) 2020-11-18
WO2016165917A1 (fr) 2016-10-20
US20180099254A1 (en) 2018-04-12
BR112017022241B1 (pt) 2022-04-12
US11059004B2 (en) 2021-07-13
RU2017139802A3 (fr) 2019-05-17
BR112017022241A2 (pt) 2018-07-10
ES2849179T3 (es) 2021-08-16
RU2699108C2 (ru) 2019-09-03

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