EP3338881A1 - Planetwalzenmischer, produktionsanlage und verfahren - Google Patents

Planetwalzenmischer, produktionsanlage und verfahren Download PDF

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Publication number
EP3338881A1
EP3338881A1 EP16206567.6A EP16206567A EP3338881A1 EP 3338881 A1 EP3338881 A1 EP 3338881A1 EP 16206567 A EP16206567 A EP 16206567A EP 3338881 A1 EP3338881 A1 EP 3338881A1
Authority
EP
European Patent Office
Prior art keywords
planetary roller
roller mixer
housing
toothing
suspension
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.)
Ceased
Application number
EP16206567.6A
Other languages
German (de)
English (en)
French (fr)
Inventor
Achim Philipp Sturm
Eduard Nater
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
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 Buehler AG filed Critical Buehler AG
Priority to EP16206567.6A priority Critical patent/EP3338881A1/de
Priority to EP17818578.1A priority patent/EP3558503B1/de
Priority to US16/471,662 priority patent/US20190381467A1/en
Priority to PCT/EP2017/084053 priority patent/WO2018115260A2/de
Priority to KR1020197021533A priority patent/KR20190095953A/ko
Priority to CN201780080123.2A priority patent/CN110099736A/zh
Publication of EP3338881A1 publication Critical patent/EP3338881A1/de
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/82—Combinations of dissimilar mixers
    • B01F33/821—Combinations of dissimilar mixers with consecutive receptacles
    • 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
    • B01F23/50—Mixing liquids with solids
    • B01F23/53—Mixing liquids with solids using driven stirrers
    • 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
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
    • B01F27/053—Stirrers characterised by their elements, materials or mechanical properties characterised by their materials
    • B01F27/0531—Stirrers characterised by their elements, materials or mechanical properties characterised by their materials with particular surface characteristics, e.g. coated or rough
    • 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
    • B01F27/116—Stirrers shaped as cylinders, balls or rollers
    • 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
    • B01F27/116—Stirrers shaped as cylinders, balls or rollers
    • B01F27/1163—Rollers
    • 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
    • B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
    • B01F27/2721—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces 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
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/75—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • B01F27/755—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis the stirrers being cylinders, balls or gears
    • 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
    • B01F27/95—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • 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
    • B01F27/95—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • B01F27/951—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis with at least one stirrer mounted on the sun axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/213—Measuring of the properties of the mixtures, e.g. temperature, density or colour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/7174—Feed mechanisms characterised by the means for feeding the components to the mixer using pistons, plungers or syringes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/95—Heating or cooling systems using heated or cooled stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F2035/98—Cooling

Definitions

  • the invention relates to a planetary roller mixer for dispersing a suspension, a production plant for processing a suspension and a process for dispersing suspensions.
  • Suspensions ie liquids with finely divided solid particles, such as printing inks, battery slurries, adhesives and sealants, lubricants and cosmetics, have so far been mainly processed in rolling mills and stirred mills, with a fine and uniform distribution of the solid particles in the liquid to be achieved.
  • a comminution of the solid particles can be achieved or at least the presence of lumps can be prevented.
  • the rollers and mills can be run several times, if required by the required quality.
  • Rolling mills with open-rotating rollers and / or open nip are a safety issue because it can lead to a risk to persons. Taking account of safety aspects, closed systems should preferably be used. However, rolling mills are difficult to complete due to product management. If several roller passages are required, it can be due to the usually high product viscosity of suspensions incurred much manual work. This includes the removal of the dispersed product from the flow plate, the emptying of the rolling mill, to changing the product container. Automation is only possible to a limited extent.
  • agitator ball mills are closed systems, they require more effort. So the grinding media must be separated It must be ensured that blockage of separation devices or discharge openings by grinding media and / or product oversize is avoided. If the product is changed, it may also be necessary to remove the grinding media from the process area to completely clean the machine. This means a longer downtime.
  • Planetary roller extruders are also known from the state of the art. These are used predominantly for the production of plastics, in which case several solid or liquid product components can be added to the extruder, compacted, mixed, plasticized, dispersed and chemically converted.
  • the processed mass is pressed under pressure continuously through a nozzle, or outlet opening. For this purpose, a pressure of up to about 100 bar can be produced in the extruder. The greatest pressure is in the process zone towards the product outlet, or at the product outlet itself.
  • the central spindle is therefore usually connected to the side of the product inlet with a drive.
  • the material can be introduced from above the extruder arranged metering in a filling cylinder of the extruder.
  • the planetary roller extruder has a Einfrake trained as filling part, which is either arranged in the housing of the planetary roller extruder or the product inlet is directly upstream.
  • the planetary roller extruder may be arranged vertically, with the mass passing through the extruder from top to bottom. In the vertical arrangement, the material naturally flows on its own in the direction of gravity, and thus away from an overhead filling area.
  • Planetary roller extruders are typically made of steel.
  • the object is achieved by a planetary roller mixer for dispersing a suspension.
  • the planetary roller mixer comprises a housing, which is substantially cylindrical on the inside, the interior of which thus has a rotational symmetry with respect to a longitudinal axis, and is provided with an internal toothing.
  • the housing may have at least one substantially cylindrical bush with internal toothing.
  • the planetary roller mixer includes at least one product inlet in a first end region of the housing and at least one product outlet in a second end region of the housing.
  • the planetary roller mixer comprises at least one central spindle arranged in the housing with toothing and at least one planetary spindle arranged in the housing with toothing, wherein the toothing of the planetary spindle is in operative connection with both the toothing of the central spindle and the internal toothing of the housing or the socket.
  • a plurality of planetary spindles are arranged around a central spindle.
  • the planetary roller mixer preferably comprises a central spindle.
  • a plurality of central spindles can be arranged on an axis in the longitudinal direction one behind the other.
  • the internal toothing can be mounted directly on the housing or it is mounted on a socket which can be interchangeably arranged in the housing.
  • the housing and possibly the socket are fixed.
  • the central spindle is usually offset in operation by a drive means arranged outside the housing in rotation about a longitudinal axis.
  • the toothing of the planetary spindles is on the one hand in an operative connection with the toothing of the central spindle, on the other hand with the internal toothing. By driving the central spindle, the planetary spindles are also rotated.
  • the housing or bushing, the central spindle and the planetary spindles enclose the process zone of the planetary roller mixer.
  • the process zone in which the suspension can stay and in which it is processed, is located between the planetary spindles and the internal teeth of the housing or the bush, between the central spindle and the internal teeth of the housing or the bushing and between the planetary spindles and the central spindle.
  • the planetary roller mixer comprises at least one product inlet, via which suspension can be introduced into the process zone of the planetary roller mixer, and at least one product outlet, via which suspension can be discharged from the process zone of the planetary roller mixer.
  • Product inlet and outlet are typically formed through openings in the housing.
  • product inlet and outlet permit a, particularly direct, fluid connection into and out of the process zone.
  • the planetary roller mixer does not comprise a separate solids inlet.
  • the planetary roller mixer does not comprise a screw conveyor integrated in the housing or immediately adjacent to the process zone.
  • the product outlet and the product inlet are designed so that the process zone of the planetary roller mixer can be filled substantially completely with suspension.
  • Essentially completely fillable means that the process zone to at least 80%, preferably at least 90%, more preferably at least 95% is filled and the planetary roller mixer with a process zone to at least 80%, preferably at least 90%, particularly preferred at least 95%, filled with suspension, is operable.
  • Gas quantities may be present in the filled planetary roller mixer, for example, which have been introduced as gas inclusions with the suspension or which have collected in dead volumes. These amounts of gas, for example air pockets, can prevent complete filling of the process zone.
  • the trapped gas volume can be minimized, for example, when the planetary roller mixer is provided with vent openings.
  • the product outlet is located above the product inlet during normal operation. If more than one product inlet and / or more than one product outlet are provided, all product outlets are located above the product inlet during normal operation.
  • the planetary roller mixer fills up at least up to the height of the product outlet.
  • the product outlet is preferably arranged so far above the product inlet that the process zone can be filled with suspension to at least 80%, preferably at least 90%, particularly preferably at least 95%, without the product outlet having to be closed.
  • the product outlet is arranged at the highest point of the process zone.
  • the product outlet has a product discharge line which comprises an overflow.
  • the product discharge line can be arranged at least partially above a product inlet line provided at the product inlet. The overflow ensures that the suspension only expires when a certain filling level is reached, in the present In the event of normal operation, the process zone should be substantially completely filled.
  • the product outlet line preferably connects directly to an opening in the housing, the product inlet line is preferably directly upstream of an opening in the housing.
  • the possibility of essentially completely filling the process zone without a backflow-building device at the product outlet permits continuous processing of the suspension.
  • This can be intensively homogenized and / or dispersed in the device according to the invention and the solids optionally further comminuted, the processing taking place in a closed system without moving parts being accessible. There is thus no danger for operating personnel during operation.
  • the closed device also reduces the risk of contamination from inadvertent entry of gases or dirt from the environment and from exposure to light.
  • the planetary roller mixer at least a portion of the planetary roller mixer is temperature controlled.
  • the housing and / or the central spindle are temperature controlled.
  • the suspension can then be processed independently of the ambient temperature at a temperature which is favorable for the respective suspension constituents.
  • the planetary roller mixer in particular tempering, through which a tempering fluid, for example, a cooling liquid, is conductive.
  • a tempering fluid for example, a cooling liquid
  • the tempering channels can be formed in particular in the central spindle and / or in the housing be, each having a large surface, which is in contact with the suspension.
  • Heat can also be dissipated with the tempering fluid, which under certain circumstances arises during processing of the suspension, for example due to friction.
  • the housing and the spindles are arranged vertically during normal operation.
  • a planetary roller mixer with a product outlet arranged in operation above the product inlet results in a simple manner in a vertically arranged planetary roller mixer in which the housing and the spindles are vertically aligned during operation when the planetary roller mixer can be filled in the lower region and the suspension is discharged in the upper region becomes. The suspension is thus promoted from bottom to top and thus against gravity.
  • the process zone runs at least up to the height of the product outlet.
  • the suspension In the planetary roller mixer, the suspension is moved between the surfaces of the gears.
  • the suspension is usually not pressed out of a nozzle, so no large pressure must be built. A promotion of the suspension in the direction of product output by the rotation of the spindles is thus not necessary.
  • the toothing can enclose an angle with the longitudinal axis of the spindle, for example 45 °.
  • the spindles then provide propulsion of the suspension.
  • the spindles, the housing and / or the bush at least a region in which the toothing is designed such that during operation by the toothing no propulsion of the suspension in a direction from the product inlet to the product outlet is effected.
  • This area can for example have a straight toothing, in which the toothing is aligned parallel to the spindle axis.
  • the toothing along the entire central spindle is designed so that no propulsion through the spindles is effected.
  • the spindles, the housing and / or the bushing have at least one region in which the toothing is designed such that during operation by the toothing a backward conveyance in the direction of the product inlet can be effected.
  • the suspension must then be conveyed through the planetary roller mixer by adding suspension, for example by means of a separate pump.
  • the suspension remains in the process zone for a relatively long time without active propulsion through the spindles and experiences intensive processing.
  • the planetary roller mixer on a drive device for driving the central spindle, which provides, for example, a power range up to 90 kW.
  • the drive device comprises, for example, a drive motor, a belt drive, optionally an additional transmission and / or a bearing.
  • the central spindle is typically led out of the housing on one side and can be coupled there to the drive device.
  • the suspension Since the suspension is in liquid form both in the entry and the discharge, it plays a minor role, especially in a horizontal arrangement, whether the central spindle on the side of the product outlet or the side of the product input is led out of the housing. In any case, a seal is necessary.
  • the drive device is arranged closer to the product outlet than at the product inlet.
  • the product flow between product inlet and product outlet thus preferably takes place in the direction of the drive device.
  • the central spindle is therefore preferably led out of the housing on the product outlet side and coupled to the drive device and sealed on the product outlet side, where a lower pressure is applied.
  • a seal is provided between the central spindle and the drive means.
  • the seal provides fluid tightness and can be designed to withstand pressures of up to about 10 bar.
  • a seal As a seal, a mechanical seal, a stuffing box or a threaded spiral can be used.
  • the planetary roller mixer is advantageously dimensioned such that the process zone of the planetary roller mixer comprises a void volume of less than 201, in particular 1-10 l.
  • the void volume of the process zone usually results from the internal volume of the housing or the socket minus the volume of the central spindle and the planetary spindles.
  • the void volume of the process zone is much smaller than the internal volume of the housing or socket because of the spindles.
  • the planetary roller mixer can be used in continuous operation, the rather small void volume is sufficient for processing.
  • the housing, the bush and / or the spindles are usually made of steel.
  • At least one element of the planetary roller mixer which comes into contact with the suspension during normal operation, on the surface, which comes into contact with the suspension during operation, a coating containing ceramic material or consists of a ceramic material ,
  • the element is made of ceramic material.
  • the suspension-contacting elements include the central spindle, the planetary spindles, the housing and / or socket.
  • These may be made of ceramic, have a ceramic toothing on a core, for example made of steel, or have a ceramic coating.
  • Silicon carbide or silicon nitride may be used as the ceramic material.
  • Ceramic materials often have high mechanical and chemical stability. They therefore have a life, which allows a large number of operating hours, without the corresponding suspension-contacting elements must be replaced.
  • the planetary spindles are usually arranged parallel to the central spindle and can extend over the entire length of the central spindle.
  • the planetary roller mixer comprises at least one planetary spindle, which consists of segments arranged on a common axis.
  • the planetary roller mixer comprises toothed segments which are in operative connection with both the toothing of the central spindle and the internal toothing of the housing or the bushing, wherein the segments are arranged one behind the other in the longitudinal direction and offset from one another in the circumferential direction.
  • a guide ring may be provided by which the segments, in particular in the longitudinal direction, are held in position.
  • the axial direction of the central spindle is called.
  • Short spindles are often easier to manufacture and therefore cheaper per length. Become in the longitudinal direction adjacent planetary spindles also offset in the circumferential direction to each other is led the suspension within the planetary roller mixer for longer ways and undergoes a more intensive processing.
  • the product deflection can be enhanced by the built-in guide rings for positioning the circumferentially offset planetary spindle segments.
  • the object underlying the invention is also achieved by a production plant for processing a suspension with a conveyor, in particular a pump and / or a squeezing device, and a planetary roller mixer, in particular as described above.
  • the planetary roller mixer comprises a housing that is substantially cylindrical inside and provided with an internal toothing, or at least one substantially cylindrical bushing with internal teeth.
  • the planetary roller mixer includes at least one product inlet in a first end region of the housing and at least one product outlet in a second end region of the housing.
  • the planetary roller mixer further comprises at least one central spindle arranged in the housing with toothing and at least one planetary spindle with toothing arranged in the housing, wherein the toothing of the planetary spindle is in operative connection with both the toothing of the central spindle and the internal toothing of the housing or the socket.
  • the product outlet is located above or at the level of the product inlet when used as intended.
  • the conveyor is upstream of the product inlet outside the housing and is in fluid communication with the product inlet.
  • the conveyor may be fed from a pre-mixer or a storage tank.
  • highly viscous suspension is typically pressed by means of a stamping element through an outlet which can be closed by a valve.
  • the suspension can be conveyed from the die into and through the planetary roller mixer.
  • dispensing devices typically do not have high metering accuracy, therefore, they can be coupled to a downstream pump that provides for a desired, for example, constant, product flow into and through the planetary roller mixer.
  • Low-viscosity suspensions can also be sucked by means of a pump alone from a feed container.
  • the pump is preferably designed separately from the planetary roller mixer and not integrated in the housing of the planetary roller mixer.
  • the entire suspension from the pump and / or the squeezing device can be guided in the planetary roller mixer.
  • the planetary roller mixer preferably has only one product inlet, which is in fluid communication with the conveyor, for example the pump or the squeezing device.
  • the planetary roller mixer does not have a separate solids inlet.
  • the production plant has at least one premixer.
  • the premixer is preferably arranged upstream of the planetary roller mixer.
  • the constituents of the suspension ie liquid and solid particles, can be premixed, so that already a suspension can be entered in the planetary roller mixer.
  • the production plant can be used for a single pass of suspension.
  • the processed suspension can be collected and passed through the production plant again, so the production plant can be used in a multi-pass operation.
  • the production plant can have a product line, via which suspension from the planetary roller mixer can be guided into a pre-mixer, and a further product line, via which the suspension from the pre-mixer can be guided into the conveyor, from where the suspension can again be guided into the planetary roller mixer.
  • the production plant can thus be operated in the circulation process, wherein the suspension can remain in the production plant until a desired quality is reached.
  • the production plant can be equipped with a sensor which records a knife value which allows conclusions to be drawn as to the quality of the suspension, for example a viscosity and / or particle size sensor.
  • the planetary roller mixer comprises a housing which is substantially cylindrical inside and is provided with an internal toothing. Alternatively or additionally, the planetary roller mixer has at least one essentially cylindrical bushing with internal toothing.
  • the planetary roller mixer includes at least one product inlet in a first end region of the housing and at least one product outlet in a second end region of the housing.
  • the planetary roller mixer further comprises at least one central spindle arranged in the housing with toothing and at least one planetary spindle with toothing arranged in the housing, wherein the toothing of the planetary spindle is in operative connection with both the toothing of the central spindle and the internal toothing of the housing or the socket.
  • the product outlet is preferably arranged above or at the level of the product inlet during normal operation.
  • the dispersing takes place in the process zone between a central spindle with toothing, at least one rotating planetary spindle with toothing and a housing with internal toothing or at least one bushing with internal toothing.
  • the pressure in the planetary roller mixer is greater in the vicinity of the product inlet than on the product outlet side; in particular, the greatest pressure prevails in the planetary roller mixer at the product inlet.
  • the dispersion is preferably carried out at a product inlet pressure between 0.2 and 10 bar.
  • the suspension When leaving the planetary roller mixer, the suspension preferably has a temperature between 5 ° C and 150 ° C.
  • premixed UV offset paste is processed in the planetary roller mixer, with organic pigment and fillers in the ink being dispersed to particle sizes below 10 microns. In this case, a product temperature of 60 ° C is not exceeded.
  • Conventional offset ink may also be processed in the planetary roller mixer, for example, in which pearlized carbon black is incorporated into a binder and comminuted to particle sizes less than 15 microns. In this case, a maximum permissible product temperature of 120 ° C is not exceeded.
  • grease can be processed in which a thickener and / or additives are homogenized to particle sizes of 10 to 15 microns.
  • the planetary roller mixer is supplied with suspensions having a viscosity of from 0.1 to 50 Pa.s, in particular from 0.7 to 6 Pa.s.
  • the viscosity can be determined with a rheometer at temperatures of 25 to 90 ° C, especially 50-70 ° C, and a shear rate of 450 1 / s.
  • a filling paste to be processed with a viscosity of 4 Pa * s at 50 ° C and 450 1 / s can be supplied with a squeezing device to a pump and fed from there to the planetary roller mixer.
  • a highly viscous paste with a viscosity of 50 Pa * s at 25 ° C and 450 1 / s can be supplied via a squeezing device, without intermediate pump, the planetary roller mixer.
  • Pre-mixed suspension in the planetary roller mixer is preferably processed in a premixer, the suspension being premixed outside the planetary roller mixer in a premixer arranged upstream of the planetary roller mixer and directed to the planetary roller mixer by means of a conveyor via a product inlet line.
  • the suspension is thus further dispersed, but already passes as a premixed suspension in the planetary roller mixer.
  • the planetary roller mixer can therefore be fed from only one product inlet line.
  • the planetary roller mixer does not need to have a solids inlet.
  • the suspension is pumped into the planetary roller mixer and / or the suspension is conveyed by means of a conveying device, in particular a pump and / or squeezing device, through the planetary roller mixer.
  • a conveying device in particular a pump and / or squeezing device
  • the product flow preferably proceeds in a vertically arranged planetary roller mixer from bottom to top.
  • the product flow between product inlet and product outlet preferably takes place in the direction of the drive device.
  • the suspension may pass through the planetary roller mixer at least twice, for example in multi-pass operation or in circulation operation.
  • FIG. 1 shows a schematic representation of a planetary roller mixer 1 in sectional view.
  • the planetary roller mixer 1 comprises a central spindle 2 with toothing 3, a plurality of revolving planetary spindles 4, each having a toothing 5, and a housing 6 with a bushing 8, which has an internal toothing 7.
  • the toothing 5 of the planetary spindles 4 is on the one hand in operative connection with toothing 3 of the central spindle 2, on the other hand with the internal toothing. 7
  • the process zone 12 which has a void volume 11 of about 1-10 1.
  • FIG. 2 shows a schematic representation of a first example of a planetary roller mixer 1 in a side view.
  • the housing 6 and the not explicitly shown spindles 2, 4 are vertically aligned in the operating position.
  • the planetary roller mixer 1 comprises a product inlet 9 in a first end region 40 of the housing 6 and a product outlet 10 in a second end region 41 of the housing 6, the product outlet 10 being arranged above the product inlet 9.
  • the process zone 12 of the dispersing device 1 is substantially completely filled during operation.
  • the central spindle 2 is led out of the housing 6 in the upper region of the dispersing device 1 and can be driven by a drive device 18, in this case a motor.
  • a not explicitly shown seal is provided, in particular a mechanical seal.
  • FIG. 3 shows a schematic representation of a second example of a planetary roller mixer 1 in a side view.
  • the housing 6 and the not explicitly shown spindles 2, 4 are aligned horizontally in the operating position.
  • the planetary roller mixer 1 comprises a product inlet 9 and a product outlet 10, the product outlet 10 having an intended product discharge line 13 which comprises an overflow 14.
  • the product discharge line 13 is arranged at least partially above a product inlet line 15 provided at the product inlet 9, so that the not explicitly shown process zone 12 of the planetary roller mixer 1 can be filled substantially completely with suspension.
  • the drive device 18 for the central spindle 2 provides a power range up to 90 kW.
  • FIG. 4 shows a schematic flow diagram of a first example of a production plant 100 for processing a suspension.
  • the production plant 100 comprises a conveying device, in this case a pump 19, and a planetary roller mixer 1, in the example shown in a horizontal arrangement, with a central spindle not shown with teeth, not explicitly shown rotating planetary spindle 4 with teeth 5 and a housing 6 with not explicitly shown Internal toothing 7 (see FIG. 1 ).
  • a conveying device in this case a pump 19, and a planetary roller mixer 1, in the example shown in a horizontal arrangement, with a central spindle not shown with teeth, not explicitly shown rotating planetary spindle 4 with teeth 5 and a housing 6 with not explicitly shown Internal toothing 7 (see FIG. 1 ).
  • the planetary roller mixer 1 comprises a product inlet 9, which is equipped with a product inlet line 15 and a product outlet 10 with a product discharge line 13. The entire suspension can be guided via the product inlet line 15 from the pump 19 in the planetary roller mixer 1.
  • the production plant 100 also includes a premixer 20. This has at least one stirring tool 24, which is driven by at least one motor 25.
  • the pump 19 pumps premixed Suspension from the premixer 20 in the planetary roller mixer 1.
  • the pump 19 also ensures that the suspension is conveyed by the planetary roller mixer 1 in a direction 23 from the product inlet 9 to the product outlet 10. Although the motor 18 causes a rotation of the spindles, but not the propulsion of the suspension in the dispersing device first
  • FIG. 5 shows a schematic flow diagram of a second example of a production plant 100 for processing a suspension.
  • FIG. 4 Similar to the example from FIG. 4 includes the production plant 100 as a conveying device 19 a pump and a planetary roller mixer 1, in the example shown in a horizontal arrangement, with a central spindle not shown with teeth, not explicitly shown rotating planetary spindle 4 with teeth 5 and a housing 6 with not explicitly shown internal teeth 7 (Fig. please refer FIG. 1 ).
  • the planetary roller mixer 1 comprises a product inlet 9, which is equipped with a product inlet line 15 and a product outlet 10. The entire suspension can be guided via the product inlet line 15 from the pump 19 into the planetary roller mixer 1.
  • the production plant 100 also includes a premixer 20.
  • the product outlet 10 is connected to a product line 21, via which suspension from the planetary roller mixer 1 into the premixer 20 can be guided.
  • the premixer 20 the more homogenized and / or dispersed suspension is mixed with less homogenized and / or dispersed suspension.
  • the suspension is guided by the premixer 20 into the pump 19, from where the suspension is passed through a product inlet line 15 in the planetary roller mixer 1.
  • the production plant 100 can be operated in the circulation process until the suspension has the desired quality.
  • FIG. 6 shows a schematic flow diagram of a third example of a production plant 100 for processing a suspension.
  • the production plant 100 comprises a planetary roller mixer 1, in the example shown in a horizontal arrangement.
  • a squeezing device 27 and a pump 28 connected in series can be provided.
  • High-viscosity suspension is pressed out of a reservoir 31 by means of a punch 29, which is operated by a piston 30.
  • the pump 28 ensures that the suspension is fed evenly to the planetary roller mixer 1 via the product inlet line 15.
  • the processed suspension is collected in a collecting tank 32.
  • FIG. 7 shows a schematic representation of a third planetary roller mixer 1 in a perspective view.
  • the central spindle 2, the planetary spindle 4, the housing 6 have a straight toothing 3, 5, 7. During operation, by the teeth 3, 5, 7 no propulsion of the suspension can be effected.
  • FIG. 8 shows a schematic representation of a portion of the third example of a planetary roller mixer in a perspective view.
  • the planetary roller mixer 1 comprises, as planetary spindles 4 segments 4a, 4b, 4c, 4d, which are arranged one behind the other in the longitudinal direction 33 and offset in the circumferential direction 34 against each other.
  • the planetary spindles 4 have a straight toothing 5.
  • the toothing 5 extends parallel to the longitudinal axis 32 of the central spindle 2 and therefore causes no propulsion.
  • FIG. 9 shows the third example of the planetary roller mixer 1 in sectional view.
  • the product discharge line 13 is formed as an overflow 35.
  • the product discharge line 13 is arranged at least partially above the product inlet line 15 provided at the product inlet 9.
  • the process zone 12 is sealed with a mechanical seal 37 relative to the bearing 36 of the central spindle 2.
  • the central spindle 2 can be tempered by means of a tempering lance 39.
  • the product flow between product inlet 9 and product outlet 10 takes place in the direction 38 of the drive device not explicitly shown.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Accessories For Mixers (AREA)
EP16206567.6A 2016-12-23 2016-12-23 Planetwalzenmischer, produktionsanlage und verfahren Ceased EP3338881A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP16206567.6A EP3338881A1 (de) 2016-12-23 2016-12-23 Planetwalzenmischer, produktionsanlage und verfahren
EP17818578.1A EP3558503B1 (de) 2016-12-23 2017-12-21 Produktionsanlage und verfahren
US16/471,662 US20190381467A1 (en) 2016-12-23 2017-12-21 Production plant and method
PCT/EP2017/084053 WO2018115260A2 (de) 2016-12-23 2017-12-21 Produktionsanlage und verfahren
KR1020197021533A KR20190095953A (ko) 2016-12-23 2017-12-21 생산 플랜트 및 방법
CN201780080123.2A CN110099736A (zh) 2016-12-23 2017-12-21 生产设备和方法

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CN111545106A (zh) * 2020-05-14 2020-08-18 杨扬 一种酒坛封口用黄泥处理装置
WO2020182363A1 (de) * 2019-03-08 2020-09-17 Krones Ag Etikettiermaschine zum aufbringen von etiketten auf gefässe unter verwendung von kaltleim

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CN107601588A (zh) * 2017-08-09 2018-01-19 安徽理工大学 一种污水净化处理方法及装置
CN111530356A (zh) * 2020-05-12 2020-08-14 南阳市中心医院 一种肿瘤病人化疗护理装置
CN112169642A (zh) * 2020-10-05 2021-01-05 新昌县奔力机械有限公司 一种应用于化工行业制备石墨烯的均质剪切机
CN112354499B (zh) * 2020-10-20 2022-11-01 浙江美之源化妆品有限公司 一种香水加工用催陈装置

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US3362793A (en) * 1964-06-17 1968-01-09 Michelin & Cie Back flow-preventing reactor for continuous polymerization
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CN111545106A (zh) * 2020-05-14 2020-08-18 杨扬 一种酒坛封口用黄泥处理装置

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EP3558503B1 (de) 2021-08-11
WO2018115260A2 (de) 2018-06-28
US20190381467A1 (en) 2019-12-19
WO2018115260A3 (de) 2018-08-16
EP3558503A2 (de) 2019-10-30
KR20190095953A (ko) 2019-08-16
CN110099736A (zh) 2019-08-06

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