EP1776998B1 - Mischer - Google Patents

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Publication number
EP1776998B1
EP1776998B1 EP05445080A EP05445080A EP1776998B1 EP 1776998 B1 EP1776998 B1 EP 1776998B1 EP 05445080 A EP05445080 A EP 05445080A EP 05445080 A EP05445080 A EP 05445080A EP 1776998 B1 EP1776998 B1 EP 1776998B1
Authority
EP
European Patent Office
Prior art keywords
blade
mixture
force
axis
sensor
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
EP05445080A
Other languages
English (en)
French (fr)
Other versions
EP1776998A1 (de
Inventor
Rebei Bel Fdhila
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.)
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Original Assignee
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
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 ABB Research Ltd Switzerland, ABB Research Ltd Sweden filed Critical ABB Research Ltd Switzerland
Priority to AT05445080T priority Critical patent/ATE401951T1/de
Priority to EP05445080A priority patent/EP1776998B1/de
Priority to DE602005008439T priority patent/DE602005008439D1/de
Priority to PCT/EP2006/067578 priority patent/WO2007045678A1/en
Publication of EP1776998A1 publication Critical patent/EP1776998A1/de
Application granted granted Critical
Publication of EP1776998B1 publication Critical patent/EP1776998B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • 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
    • B01F27/054—Deformable stirrers, e.g. deformed by a centrifugal force applied during operation
    • B01F27/0541—Deformable stirrers, e.g. deformed by a centrifugal force applied during operation with mechanical means to alter the position of the stirring 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
    • B01F27/05—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
    • 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
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2113—Pressure
    • 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
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2115—Temperature
    • 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
    • B01F35/212—Measuring of the driving system data, e.g. torque, speed or power data
    • 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
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/2133—Electrical conductivity or dielectric constant of the mixture
    • 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
    • B01F35/2136—Viscosity
    • 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
    • B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis

Definitions

  • the present invention refers generally to mixing of at least a first substance and a second substance.
  • the first substance is typically a liquid and the second substance one or several additives to be added to the liquid.
  • the additives can include a liquid or a solid, for instance a powder material.
  • the present invention refers to a device for mixing at least a first substance and a second substance to form a homogenous mixture according to the precharacterizing portion of claim 1.
  • the agitating member In a mixing process, especially a wet mixing process, the agitating member conventionally has a given topology or shape. If different substances, for instance with regard to temperature, viscosity, solid content etc, are to be mixed in different mixing processes, it is frequently necessary to replace the agitating member since the given topology does not result in an optimum mixing process. This is cumbersome and expensive since not only the mixing device and the agitating members are expensive, but also, and more important, the shut-down time during replacement. If we keep the same mixing device and the same agitating member, which is rigid and not deformable, during the entire mixing process, the quality of the product is certainly diminished. In fact, the properties of a mixture are changing during a mixing process, which means that the given topology can be optimised during a part of the mixing process but can be unsuitable during another part of the mixing process.
  • US-A-4,150,900 shows a slurry mixer having a tank and a rotating agitating member with blades in the tank.
  • Baffles are provided in the proximity of the inner tank wall.
  • the baffles are floating on the liquid to be mixed.
  • DE-A-23 43 011 shows a mixing device comprising three conical shearing elements, which are independently driven and connected to a respective motor by means of a respective tubular shaft.
  • the shafts and the shearing elements are concentrically arranged within each other.
  • One of the shaft and the associated shearing element is axially displaceable.
  • DE-A-102 03 005 shows a mixing device for the dissolution of cellulose carbamate.
  • the device comprises a vessel and rotating mixing elements. Probes are provided for continuously measuring a plurality of mixture parameters such as solution concentration, solid content, turbidity, colour, conductivity, refraction of light, molecular weight, particle size, particle count and viscosity.
  • the device also comprises software for analysing result for controlling parameters such as solvent feed, stirrer speed, carbamate addition, removal of carbamate solution and reactor temperature.
  • DE-C-44 41 350 shows a mixing device comprising a container, a rotating agitating member arranged in the container and a measuring sensor including a fibre optic extending down into the mixture in the container.
  • the measuring sensor is adapted to continuously measure the moisture content of the mixture.
  • DE-A-40 37 028 shows a process for operating a mixing device comprising a container and a motor-driven rotating agitating member.
  • a number of parameters are continuously sensed, such as temperature, rotating speed, effect of the motor, viscosity (after a set time period).
  • An estimated mixing time is calculated.
  • the rotating speed is regulated in response to the sensed parameters, and can be regulated for the achievement of the estimated mixing time.
  • Document GB-A-1271336 shows the features in the preamble of claim 1. However, there is no disclosure in GB-A-1271336 of any possibility to rotate the blades around their respective longitudinal axis.
  • Document US-A-5,197,803 discloses a mixing device having an agitating member which is self-cleaning.
  • the agitating member comprises a plurality of mixing blades, which are displaceable in a tangential direction with regard to a centre drive shaft.
  • Document FR-A-2680887 shows a mixing device having two mixing members each comprising blades 41 and 42, respectively.
  • the blades are fixedly attached to their respective shaft, and are not adjustable.
  • the object of the present invention is to provide a mixing device that overcomes the problems discussed above. More specifically, the object is to provide a mixing device which is adaptable to varying mixing conditions. This object is achieved by the mixing device defined in claim 1.
  • adjusting means adapted to permit an adjustment of at least one of the geometrical parameters in order to change the topology of the agitating member, it is possible to adjust the agitating member to have an optimum shape and dimension for the actual mixing process and the substances to be mixed.
  • One and the same agitating member may thus be used for mixing a variety of different substances.
  • the agitating member may be adjusted to consider such parameters of the mixture as solid content, viscosity, temperature, pH, electrical conductivity, pressure and shear.
  • the agitating member has at least one blade extending outside the rotary axis.
  • the blade may thus extend outwardly from the shaft.
  • the blade may extend in various directions from the rotary axis. Any configuration of the blade proper is thus possible.
  • the agitating member may include an arbitrary number of blades, for instance 1, 2, 3, 4 or more blades.
  • the at least one adjustable geometrical parameter is defined by the at least one blade. Consequently, the topology of the agitating member is changeable by adjusting the position, the shape or the angle of one or several of the blades.
  • the agitating member comprises a base element mounted to the shaft, wherein at least one blade is mounted to the base element.
  • the base element can have any arbitrary shape.
  • the purpose of the base element is to provide an attachment element for the blade or blades.
  • the base element may be an integrated part of the shaft.
  • the at least one blade element is displaceable inwardly and outwardly in order to permit an adjustment of the diameter of the agitating member.
  • the diameter of the agitating member is an important geometrical parameter. By changing the diameter D, the effect P of motor is dramatically changed. Approximately the effect P ⁇ k*D 5 .
  • the at least one blade may extend along a respective longitudinal blade axis that extends outwardly with respect to the rotary axis.
  • the longitudinal blade axis does not have to be radial with respect to the rotary axis but may also have a tangential component.
  • the longitudinal blade axis may extend somewhat upwardly, perpendicularly, or somewhat downwardly with respect to the rotary axis.
  • the at least one blade is displaceable inwardly and outwardly along the respective longitudinal blade axis.
  • the at least one blade is rotatable around the respective longitudinal blade axis.
  • the angle of the blade can be changed.
  • the angle of the blade in relation to the rotary direction of the agitating member is a further important geometrical parameter especially with regard to the shear. By adjusting this blade angle the shear can thus be influenced and changed.
  • the at least one blade is rotatable around an attachment axis, which extends through the respective blade.
  • This attachment axis may extend through the blade at an arbitrary position of the blade, for instance at an inner end, at a centre position or at an outer end of the blade.
  • the attachment axis may extend substantially perpendicular to the longitudinal blade axis.
  • the attachment axis may also be substantially parallel to the rotary axis.
  • the adjusting means comprises a locking arrangement adapted to permit locking of the at least one blade in a desired position.
  • a locking arrangement is advantageous since a desired position can be ensured.
  • the locking arrangement is important in order to ensure that the desired position is maintained during operation of the device. The adjustment may then be performed by unlocking the locking arrangement, adjusting the position of the blade and finally locking the blade in the adjusted position.
  • the locking arrangement includes at least one first locking member adapted to lock the at least one blade in the desired position with respect to the displacement of the blade inwardly and outwardly. Furthermore, the locking arrangement may comprise at least one second locking member adapted to lock the at least one blade in a desired position with respect to the rotation of the blade around the respective longitudinal blade axis. Still further, the locking arrangement may comprise at least one third locking member adapted to lock the at least one blade with respect to the rotation of the blade around the attachment axis.
  • the adjusting means comprises a force-generating arrangement adapted to provide the adjustment of at least one of the geometrical parameters.
  • a force-generating arrangement By means of such a force-generating arrangement, it is thus possible to adjust one or several geometrical parameters during operation of the device.
  • the agitating member can thus be adjusted to operate in an optimum manner during the whole mixing process. For instance, the solid content and the viscosity of the mixture can vary during the mixing process. It is therefore advantageous to be able to adapt the agitating member to the instantaneous values of the solid content and the viscosity.
  • the force-generating arrangement includes at least one first force-generating member connected to the at least one blade and adapted to displace the blade inwardly and outwardly. Consequently, the diameter of the agitating member can be changed during operation of the device.
  • the first force-generating member may include a drive member for instance an electrical motor which performs the displacement of the blade inwardly and outwardly.
  • the first force-generating member may also include a spring member which is adapted to displace the blade inwardly and outwardly with regard to the counter-acting forces of the mixture.
  • the force-generating arrangement comprises at least a second force-generating member connected to the at least one blade and adapted to rotate the blade around the attachment axis. Consequently, the blade angle may be adaptable to actual parameters of the mixture, such as the viscosity, the shear, the solid content etc.
  • the second force-generating member may include a drive member, for instance in the form of an electrical motor providing the rotation of the blade around the attachment axis.
  • the second force-generating member may also include a spring member, so that the blade angle and the rotary position of the blade around the attachment axis is self-adapted to the counter-acting forces of the mixture.
  • the force-generating arrangement comprises at least one third force-generating member connected to the at least one blade and adapted to rotate the blade around the longitudinal blade axis.
  • this force-generating member may include a drive member, for instance in the form of an electrical motor, for forcibly adjusting the rotary position of the blade with respect to the longitudinal blade axis during operation of the device.
  • the third force-generating member may also include a spring member, wherein the rotary position of the blade with respect to the longitudinal blade axis is self-adapted to the counter-acting forces of the mixture.
  • the device comprises a sensor arrangement adapted to sense during operation of the device the value of a mixture parameter related to a quality property of the mixture.
  • the device may comprise a control unit connected to the sensor arrangement and adapted to control the adjusting means during operation of the device in response to the value of the mixture parameter.
  • the control unit also may be connected to the force-generating arrangement, wherein the control unit is arranged to control the force-generating arrangement in response to the value of the mixture parameter sensed by the sensor arrangement.
  • one or several of the geometrical parameters may be adapted during operation of the device in response to varying parameters of the mixture.
  • the mixture parameter may include at least one of the following mixture parameters: solid content in the mixture, viscosity of the mixture, temperature of the mixture, pH of the mixture, electrical conductivity of the mixture and the pressure in the mixture, and the power consumption of the motor.
  • the sensor arrangement may include a sensor member adapted to sense the solid content in the mixture, a sensor member adapted to sense the viscosity of the mixture, a sensor member adapted to sense the temperature of the mixture, a sensor member adapted to sense the pH of the mixture, a sensor member adapted to sense the electrical conductivity of the mixture and/or a sensor member adapted to sense the pressure in the mixture.
  • Fig. 1 shows a device for mixing at least a first substance and a second substance to form a homogenous mixture.
  • the device comprises a vessel 1 adapted to receive the substances to be mixed.
  • the device also comprises a motor 2, a shaft 3 extending from the motor 2 and being rotatable around a rotary axis x, and an agitating member 4 for mixing the substances.
  • the substances are supplied to the vessel 1 via supply members, schematically indicated with reference signs 5 and 6.
  • the supply member 5 is adapted for the supply of the first substance which can be a liquid.
  • the supply member 6 is adapted for the supply of the second substance which can be one or several additives to be added to the liquid.
  • the additives can include a liquid, or a solid product, for instance a powder material.
  • several supply members 6 can be provided.
  • the device is suitable for mixing substances, such as paint, lubricants, paper coating and filing materials, chemical products etc.
  • the agitating member 4 is attached to the shaft 3 so that the agitating member 4 will be rotated together with the shaft 3 around the rotary axis x by means of the motor 2.
  • the agitating member 4 has a given topology or shape determined by a plurality of geometrical parameters.
  • the agitating member 4, an example of which is disclosed more closely in Fig. 2 , comprises a base element 7, which is mounted to the shaft 3, and four blades 8, which are mounted to the base element 7.
  • Each blade 8 extends along a respective longitudinal blade axis b.
  • the longitudinal blade axis b extends outwardly with respect to the rotary axis x.
  • the agitating member 4 is shown with four blades 8 in Fig. 2 , it is to be noted that the agitating 4 can include a different number of blades 8, for instance 1, 2, 3, 4, 5, 6 or more blades 8.
  • the device comprises adjusting means, schematically indicated with 9 in Fig. 1 .
  • the adjusting means 9 is adapted to permit an adjustment of at least one of the geometrical parameters of the topology of the agitating member 4 in order to change the topology of the agitating member 4 and thus influence the mixing process.
  • each blade comprises two blade wings, an upper blade wing 11 and a lower blade wing 12.
  • the upper blade wing 11 is thinner, or shorter in the rotary direction r of the agitating member 4, than the lower blade wing 12.
  • the blade wings 11 and 12 are connected to a common central portion 13. It is to be noted that the blades 8 can have an arbitrary basic shape, for instance the blade 8 can be provided with only one blade wing.
  • Figs. 3-5 shows a first embodiment of the agitating member 4.
  • the blades are displaceable inwardly and outwardly, as indicated by the arrow 14, along the respective longitudinal blade axis b.
  • the blade 8 is arranged in a slit 15 of the base element 7.
  • the slit 15 is dimensioned to permit a sliding movement of the central portion 13 of the blade 8 therein.
  • the adjusting means includes a locking arrangement 16 comprising two locking bolts 17.
  • the locking bolts 17 extends through the base element 7 and engages a respective one of four holes 18 through the central portion 13 of the blade 8.
  • two of the holes 18 are shown. The two other holes 17 are engaged by the locking bolts 16.
  • the locking bolts 17 are released and withdrawn whereafter the blade 8 is displaced to the desired position and the locking bolts 17 are introduced into the holes 18 corresponding to the desired position.
  • Fig. 4 shows a second variant of the first embodiment.
  • the adjusting means includes a force-generating arrangement including a first force-generating member 20.
  • the force-generating member 20 includes a drive motor 21 and a force-transferring member 22 connected to the drive motor 21 and the blade 8.
  • the drive motor 21 is thus arranged to displace forcibly the blade 8 along the longitudinal blade axis b inwardly and outwardly on the base element 7.
  • Fig. 5 shows a third variant of the first embodiment.
  • the adjusting means comprises a force-generating arrangement with a force-generating member 30 including a spring member 31.
  • the spring member 31 is connected to the blade 8 and an attachment member 32 mounted on the base element 7.
  • Fig. 6 shows a first variant of a second embodiment of the agitating member 4.
  • the blade 8 is rotatable around a respective attachment axis a, see also Fig. 1 .
  • the attachment axis extends through the blade 8.
  • the attachment axis a extends through the blade 8 at the inner end of the blade 8.
  • the attachment axis a may extends through the blade 8 at an arbitrary position of the blade 8 or even outside the blade 8 proper, wherein the blade 8 may be connected to a rotatable joint by any connecting member.
  • this connecting joint could in that case also be seen as a part of the blade 8.
  • the attachment axis a is substantially perpendicular to the longitudinal blade axis b and also substantially parallel to the rotary axis x.
  • the adjustment means comprises a locking arrangement 40 including a locking bar 41 extending between the blade 8 and the base element 7.
  • the locking bar 41 may be rotatably connected to the base element 7 and adapted to engage one of several holes or other receiving members provided on the blade 8. It is also possible to let the locking bar 41 be rotatably connected to the blade 8 and adapted to engage one of a plurality of holes 42 or other receiving members provided in different positions on the base element 7, as illustrated in Fig. 6 .
  • Fig. 7 shows a second variant of the second embodiment.
  • the adjusting means includes a force-generating arrangement including a second force-generating member 43 which includes a drive motor 44 directly connected to the blade 8.
  • the drive motor 44 could of course be designed in a variety of different manners.
  • the blade 8 is thus arranged to be forcibly rotated around the attachment axis a. In such away the blade angle in relation to the rotary direction r of the agitating member 4 can be adjusted and thus the shear is influenced.
  • the blade 8 in the variants disclosed in Figs. 6 and 7 has a slit (not shown) through the central portion 13 so that it can be rotated over the base element 7.
  • Figs. 8-10 show a third variant of the second embodiment.
  • the adjusting means comprises a force-generating arrangement with a force-generating member 50 in the form of a spring member 51.
  • the spring member 51 will force the blade 8 to take an appropriate rotary position around the attachment axis a depending on various circumstances.
  • Fig. 7 shows the blade 8 in a first position in which the resistance from the mixture is low.
  • Fig. 8 shows a second position of the blade member wherein the resistance of the mixture is greater.
  • Fig. 9 shows an agitating member 4 having four blades 8, the positions of which are adjusted by means of a respective spring member 51.
  • Fig. 11 shows a fist variant of a third embodiment of the agitating member.
  • the blade 8 is rotatable around the longitudinal blade axis b. More specifically, as appears from Fig. 11 , the upper blade wing 11 is rotatable around an upper blade axis b' and the lower blade wing 12 is rotatable around a lower longitudinal blade axis b".
  • the blade axes b' and b" are arranged at an upper edge 13' and a lower edge 13", respectively, of the central portion 13 of the blade 8.
  • the adjusting means includes a locking arrangement 60 comprising a locking member in the form of a locking rod 61 and a number of grooves 62 extending in parallel with the longitudinal blade axes b' and b" on the upper blade wing 11 and the lower blade wing 12, respectively.
  • the bar can be moved to engage different pairs of the grooves 62 and in such a manner the angle of the blade wings 11, 12 can be adjusted.
  • Fig. 12 shows a second variant of the third embodiment.
  • the device includes a force-generating arrangement including a force-generating member 70 including a respective drive motor 72 for the upper blade wing 11 and the lower blade wing 12.
  • the drive motors 72 are arranged to rotate the respective blade wing 11, 12 around the respective blade axes b', b", and thus to adjust forcibly the blade angles of the blade wings 11, 12.
  • the force-generating member 70 may also be adapted to rotate the blade 8 around the attachment axis a as is explained in connection with the second variant of the second embodiment disclosed in Fig. 7 .
  • Fig. 13 shows a third variant of the third embodiment.
  • the adjusting means comprises a force-generating arrangement with a force-generating member 80 in the form of a spring member 81.
  • the spring member 81 is connected to the upper blade wing 11 and the lower blade wing 12, and thus arranged to influence and adjust the blade angle of the blade 8 by adapting the angles of the blade wings 11 and 12 to the prevailing circumstances.
  • the device also comprises a control unit 100, see Fig. 1 which is arranged to control the motor 2 g i.e. the rotary speed and the effect of the motor 2, and the agitating member 4, i.e. the force-generating members shown 20, 43, 70 in Figs. 4 , 7 and 12 .
  • the device includes a sensor arrangement adapted to sense, during operation of the device, the value of a plurality of mixture parameters related to the quality property of the mixture. These mixture parameters could, for instance, be the solid content in the mixture, the viscosity of the mixture, the temperature of the mixture, the pH of the mixture, the electrical conductivity of the mixture and the pressure in the mixture. As appears from Fig.
  • the sensor arrangement may include a plurality of sensor members, 101-109. All the sensors 101-109 are connected to the control unit 100. The control unit 100 is then adapted to control the motor 2 and the agitating member 4 in response to the values of parameters sensed by the sensors 101-109.
  • the sensors 101-109 are adapted to sense continuously during operation of the device the values of the parameters. These values are continuously fed to the control unit 100, which by means of software or simulator included therein is adapted provide appropriate control signals for controlling the speed and the effect of the motor 2, and the geometrical parameters of the agitating member 4. When a correct mixture quality has been obtained the device, and thus the mixing process, is automatically stopped.
  • a first sensor member 101 may be adapted to sense the solid content in the mixture. In the embodiment disclosed this sensor member 101 has been exemplified by a video camera receiving an image of the surface of the mixture. This image can be processed and an estimation of the solid content can be made.
  • a second sensor member 102 may be adapted to sense the viscosity of the mixture.
  • a third sensor member 103 may be adapted to sense the temperature of the mixture.
  • a fourth sensor member 104 may be adapted to sense the pH of the mixture.
  • a fifth sensor member 105 may be adapted to sense the electrical conductivity of the mixture.
  • a sixth sensor member 106 may be adapted to sense the pressure in the mixture.
  • a seventh sensor member 107 may be provided one or several of the blades 8. Such a sensor could also be adapted to sense the viscosity of the mixture.
  • An eighth sensor member 108 is adapted to sense the effect or the power consumption, of the motor 2.
  • a ninth sensor member 109 is adapted to sense the rotary speed of the motor 2 and thus of the agitating member 4.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • External Artificial Organs (AREA)
  • Confectionery (AREA)

Claims (36)

  1. Ein Gerät zum Mischen von zumindest einer ersten Substanz und einer zweiten Substanz um eine homogene Mischung zu formen, wobei das Gerät umfasst:
    einen Motor (2)
    eine Welle, die sich aus dem Motor erstreckt und die um eine Rotationsachse (x) rotierbar ist, und
    ein Agitierelement (4) zum Mischen der Substanzen, wobei das Agitierelement (4) an der Welle angebracht ist, um durch den Motor um die Rotationsachse (x) rotiert zu werden, und eine gegebene räumliche Struktur hat, die durch eine Vielzahl von geometrischen Parametern festgelegt wird, dadurch gekennzeichnet, dass das Gerät Einstellmittel (9) umfasst, dafür ausgelegt, eine Einstellung zumindest eines der geometrischen Parameter zuzulassen, um die Struktur des Agitierelements (4) zu ändern und somit das Mischen zu beeinflussen.
  2. Gerät nach Anspruch 1, dadurch gekennzeichnet, dass das Agitierelement (4) zumindest ein Blatt (8) aufweist, das sich außerhalb der Rotationsachse (x) erstreckt.
  3. Gerät nach Anspruch 2, dadurch gekennzeichnet, dass der zumindest eine einstellbare, geometrische Parameter durch das zumindest eine Blatt bestimmt wird.
  4. Gerät nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, dass das Agitierelement (4) ein Basiselement (7) umfasst, das an der Welle angebracht ist, wobei das zumindest eine Blatt (8) an dem Basiselement (7) angebracht ist.
  5. Gerät nach einem der Ansprüche 3 und 4, dadurch gekennzeichnet, dass das zumindest eine Blatt (8) nach innen und nach außen verstellbar ist, um das Einstellen des Durchmessers des Agitierelements (4) zu erlauben.
  6. Gerät nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass sich das zumindest eine Blatt (8) entlang einer entsprechenden Blattlängsachse (b) erstreckt, die sich nach außen hin mit Bezug auf die Rotationsachse (x) erstreckt.
  7. Gerät nach einem der Ansprüche 5 und 6, dadurch gekennzeichnet, dass das zumindest eine Blatt (8) nach innen und nach außen entlang der entsprechenden Blattlängsachse (b) verstellbar ist.
  8. Gerät nach einem der Ansprüche 6 und 7, dadurch gekennzeichnet, dass das zumindest eine Blatt (8) rotierbar um die entsprechende Blattlängsachse (b) ist.
  9. Gerät nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass das zumindest eine Blatt (8) um eine Befestigungsachse (a) rotierbar ist, die sich durch das jeweilige Blatt (8) erstreckt.
  10. Gerät nach Anspruch 9, dadurch gekennzeichnet, dass sich die Befestigungsachse (a) im Wesentlichen senkrecht zu der Blattlängsachse (b) erstreckt.
  11. Gerät nach einem der Ansprüche 9 und 10, dadurch gekennzeichnet, dass sich die Befestigungsachse (a) im Wesentlichen parallel zur Rotationsachse (x) erstreckt.
  12. Gerät nach einem der Ansprüche 3 bis 11, dadurch gekennzeichnet, dass die Einstellmittel (9) eine Feststellanordnung (16, 40, 60) umfassen, die dafür ausgelegt ist, das zumindest eine Blatt in einer gewünschten Position festzustellen.
  13. Gerät nach einem der Ansprüche 5 und 12, dadurch gekennzeichnet, dass die Feststellanordnung (16, 40, 60) zumindest ein erstes Feststellelement (16) beinhaltet, das dafür ausgelegt ist, das zumindest eine Blatt (8) in der gewünschten Position in Bezug auf die Verstellung des Blattes (8) nach innen und nach außen festzustellen.
  14. Gerät nach Anspruch 8 und einem der Ansprüche 12 und 13, dadurch gekennzeichnet, dass die Feststellanordnung (16, 40, 60) zumindest ein zweites Feststellelement (41) umfasst, das dafür ausgelegt ist, das zumindest eine Blatt (8) in Bezug auf die Rotation des Blattes (8) um die Befestigungsachse (a) festzustellen.
  15. Gerät nach Anspruch 9 und einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass die Feststellanordnung (16, 40, 60) zumindest ein drittes Feststellelement (61) umfasst, das dafür ausgelegt ist, das zumindest eine Blatt (8) in der gewünschten Position in Bezug auf die Rotation des Blattes (8) um die entsprechende Blattlängsachse (b) festzustellen.
  16. Gerät nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Einstellmittel eine Kraft erzeugende Anordnung umfassen, die dafür ausgelegt ist, die Einstellung von zumindest einem der geometrischen Parameter zu liefern.
  17. Gerät nach einem der Ansprüche 5 und 16, dadurch gekennzeichnet, dass die Kraft erzeugende Anordnung zumindest ein erstes Kraft erzeugendes Element (20, 30) beinhaltet, das mit dem zumindest einem Blatt (8) verbunden ist, und dafür ausgelegt ist, das Blatt (8) nach innen und nach außen zu verstellen.
  18. Gerät nach Anspruch 17, dadurch gekennzeichnet, dass das erste Kraft erzeugende Element (20) ein Antriebselement (21) beinhaltet.
  19. Gerät nach Anspruch 17, dadurch gekennzeichnet, dass das erste Kraft erzeugende Element (30) ein Federelement (31) beinhaltet.
  20. Gerät nach Anspruch 8 und einem der Ansprüche 16 bis 19, dadurch gekennzeichnet, dass die Kraft erzeugende Anordnung zumindest ein zweites Kraft erzeugendes Element (43) umfasst, das mit dem zumindest einem Blatt (8) verbunden ist, und dafür ausgelegt ist, das Blatt (8) um die Befestigungsachse (a) zu rotieren.
  21. Gerät nach Anspruch 20, dadurch gekennzeichnet, dass das zweite Kraft erzeugende Element (43) ein Antriebselement (44) beinhaltet.
  22. Gerät nach Anspruch 20, dadurch gekennzeichnet, dass das zweite Kraft erzeugende Element (50) ein Federelement (51) beinhaltet.
  23. Gerät nach Anspruch 9 und einem der Ansprüche 16 bis 22, dadurch gekennzeichnet, dass die Kraft erzeugende Anordnung zumindest ein drittes Kraft erzeugendes Element (70, 80) umfasst, das mit dem zumindest einem Blatt (8) verbunden ist, und dafür ausgelegt ist, das Blatt (8) um die entsprechende Blattlängsachse (b', b'') zu rotieren.
  24. Gerät nach Anspruch 23, dadurch gekennzeichnet, dass das dritte Kraft erzeugende Element (70) ein Antriebeselement (72) beinhaltet.
  25. Gerät nach Anspruch 23, dadurch gekennzeichnet, dass das dritte Kraft erzeugende Element (80) ein Federelement (81) beinhaltet.
  26. Gerät nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Gerät eine Sensoranordnung umfasst, die dafür ausgelegt ist, während des Betriebes des Gerätes den Wert eines Mischungsparameters zu erkennen, der in Bezug zu einer Qualitätseigenschaft der Mischung steht.
  27. Gerät nach Anspruch 26, dadurch gekennzeichnet, dass das Gerät eine Kontrolleinheit (100) umfasst, die mit der Sensoranordnung verbunden ist und dafür ausgelegt ist, die Einstellmittel (9) während des Betriebes des Gerätes als Antwort auf den Wert des Mischungsparameters zu kontrollieren.
  28. Gerät nach Anspruch 16 und 27, dadurch gekennzeichnet, dass die Kontrolleinheit (100) mit der Kraft erzeugenden Anordnung verbunden ist, wobei die Kontrolleinheit (100) dafür ausgelegt ist, die Kraft erzeugende Anordnung als Antwort auf den Wert des Mischungsparameters, der durch die Sensoranordnung erkannt wurde, zu kontrollieren.
  29. Gerät nach einem der Ansprüche 26 bis 28, dadurch gekennzeichnet, dass der Mischungsparameter zumindest einen der folgenden Mischungsparameter beinhaltet:
    Feststoffgehalt in der Mischung,
    Viskosität der Mischung,
    Temperatur der Mischung,
    pH-Wert der Mischung,
    elektrische Leitfähigkeit der Mischung,
    Druck in der Mischung, und
    Energieverbrauch des Motors.
  30. Gerät nach Anspruch 29, wobei der Mischungsparameter den Feststoffgehalt in der Mischung beinhaltet, dadurch gekennzeichnet, dass die Sensoranordnung ein Sensorelement (101) beinhaltet, das dafür ausgelegt ist, den Feststoffgehalt in der Mischung zu erkennen.
  31. Gerät nach einem der Ansprüche 29 und 30, wobei der Mischungsparameter die Viskosität der Mischung beinhaltet, dadurch gekennzeichnet, dass die Sensoranordnung ein Sensorelement (102) beinhaltet, das dafür ausgelegt ist, die Viskosität der Mischung zu erkennen.
  32. Gerät nach einem der Ansprüche 29 bis 31, wobei der Mischungsparameter die Temperatur der Mischung beinhaltet, dadurch gekennzeichnet, dass die Sensoranordnung ein Sensorelement (103) beinhaltet, das dafür ausgelegt ist, die Temperatur der Mischung zu erkennen.
  33. Gerät nach einem der Ansprüche 29 bis 32, wobei der Mischungsparameter den pH-Wert der Mischung beinhaltet, dadurch gekennzeichnet, dass die Sensoranordnung ein Sensorelement (104) beinhaltet, das dafür ausgelegt ist, den pH-Wert der Mischung zu erkennen.
  34. Gerät nach einem der Ansprüche 29 bis 33, wobei der Mischungsparameter die elektrische Leitfähigkeit der Mischung beinhaltet, dadurch gekennzeichnet, dass die Sensoranordnung ein Sensorelement (105) beinhaltet, das dafür ausgelegt ist, die elektrische Leitfähigkeit der Mischung zu erkennen.
  35. Gerät nach einem der Ansprüche 29 bis 34, wobei der Mischungsparameter den Druck in der Mischung beinhaltet, dadurch gekennzeichnet, dass die Sensoranordnung ein Sensorelement (106) beinhaltet, das dafür ausgelegt ist, den Druck in der Mischung zu erkennen.
  36. Gerät nach einem der Ansprüche 29 bis 35, wobei der Mischungsparameter den Energieverbrauch des Motors (2) beinhaltet, dadurch gekennzeichnet, dass die Sensoranordnung ein Sensorelement (108) beinhaltet, das dafür ausgelegt ist, den Energieverbrauch des Motors (2) zu erkennen.
EP05445080A 2005-10-21 2005-10-21 Mischer Active EP1776998B1 (de)

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DE602005008439T DE602005008439D1 (de) 2005-10-21 2005-10-21 Mischer
PCT/EP2006/067578 WO2007045678A1 (en) 2005-10-21 2006-10-19 A mixing device

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DE102011013136A1 (de) * 2011-03-04 2012-10-11 Reiflock Abwassertechnik Gmbh Vorrichtung zur Herstellung einer Polymerlösung
EP2836295B1 (de) * 2012-04-06 2019-08-28 Life Technologies Corporation Flüssigkeitsmischsystem mit einem flexiblen antriebsstrang
EP3083023A1 (de) 2013-12-17 2016-10-26 Bayer Cropscience LP Mischsysteme, verfahren und vorrichtungen mit ausziehbaren laufrädern
US11273462B2 (en) * 2015-11-26 2022-03-15 Carlisle Fluid Technologies, Inc. Sprayer system
DE102016103456B4 (de) * 2016-02-26 2018-12-13 Sartorius Stedim Biotech Gmbh Rührwerk mit Sensor, insbesondere für einen Bioreaktor
CN106110969A (zh) * 2016-06-27 2016-11-16 安徽省思维新型建材有限公司 一种搅拌釜的辅助装置
CN106110936A (zh) * 2016-06-27 2016-11-16 安徽省思维新型建材有限公司 一种搅拌釜
CN105879761A (zh) * 2016-06-27 2016-08-24 安徽省思维新型建材有限公司 水性涂料搅拌系统
CN106110970A (zh) * 2016-06-27 2016-11-16 安徽省思维新型建材有限公司 一种摆动装置
CN106110971A (zh) * 2016-06-27 2016-11-16 安徽省思维新型建材有限公司 一种加震装置
WO2019104610A1 (zh) * 2017-11-30 2019-06-06 惠州市永明丰实业有限公司 一种热稳定喷涂涂料制备装置及制备方法
CN111615554A (zh) 2018-01-17 2020-09-01 生命技术公司 包括具有叶轮附件的螺旋混合组件的流体混合系统和使用方法
EP3768414B1 (de) * 2018-03-22 2022-03-02 BASF Coatings GmbH Herstellung von beschichtungsmittelzusammensetzungen unter anpassung von rührwerksparametern
CN117582872A (zh) * 2018-12-14 2024-02-23 环球生命科技咨询美国有限责任公司 用于生物处理系统的叶轮和喷射器组件
WO2020221790A1 (en) * 2019-05-02 2020-11-05 Global Life Sciences Solutions Usa Llc Impeller assembly for a bioprocessing system
US20230263087A1 (en) * 2020-06-04 2023-08-24 Delaval Holding Ab A manure arrangement and a method for controlling operation of a manure arrangement
DE102020127990A1 (de) 2020-10-23 2022-04-28 Syntegon Technology Gmbh Fülleinheit für eine Rundlaufpresse und ein Verfahren zur Bereitstellung einer optimierten Rundlaufpresse
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WO2007045678A1 (en) 2007-04-26
ATE401951T1 (de) 2008-08-15
DE602005008439D1 (de) 2008-09-04

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