EP4342576A1 - Dispositif de mélange - Google Patents

Dispositif de mélange Download PDF

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Publication number
EP4342576A1
EP4342576A1 EP22197847.1A EP22197847A EP4342576A1 EP 4342576 A1 EP4342576 A1 EP 4342576A1 EP 22197847 A EP22197847 A EP 22197847A EP 4342576 A1 EP4342576 A1 EP 4342576A1
Authority
EP
European Patent Office
Prior art keywords
mixing
mixing device
unit
motor unit
trough
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.)
Pending
Application number
EP22197847.1A
Other languages
German (de)
English (en)
Inventor
Michael PRUTSCHER
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.)
BHS Sonthofen GmbH
Original Assignee
BHS Sonthofen GmbH
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 BHS Sonthofen GmbH filed Critical BHS Sonthofen GmbH
Priority to EP22197847.1A priority Critical patent/EP4342576A1/fr
Publication of EP4342576A1 publication Critical patent/EP4342576A1/fr
Pending legal-status Critical Current

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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
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/213—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts characterised by the connection with the drive
    • 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
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B01F27/701—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers
    • 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
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B01F27/701—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers
    • B01F27/706—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers with all the shafts in the same receptacle
    • 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
    • B01F35/22—Control or regulation
    • B01F35/2201—Control or regulation characterised by the type of control technique used
    • B01F35/2202—Controlling the mixing process by feed-back, i.e. a measured parameter of the mixture is measured, compared with the set-value and the feed values are corrected
    • 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
    • B01F35/22—Control or regulation
    • B01F35/2201—Control or regulation characterised by the type of control technique used
    • B01F35/2209—Controlling the mixing process as a whole, i.e. involving a complete monitoring and controlling of the mixing process during the whole mixing cycle
    • 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
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • 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
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32—Driving arrangements
    • B01F35/32005—Type of drive
    • B01F35/3204—Motor driven, i.e. by means of an electric or IC motor
    • 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
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32—Driving arrangements
    • B01F35/321—Disposition of the drive
    • B01F35/3212—Disposition of the drive mounted on the receptacle
    • 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
    • B01F35/40—Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor

Definitions

  • the present invention relates to a mixing device which is designed to mix individual components introduced into the mixing device into a mixture.
  • a problem that regularly arises with such mixing devices is being able to precisely determine the duration of the mixing process. While a mixing process that is too short can result in the mixture not having the desired properties or sufficient mixing, a mixing process that is too long can lead to unnecessarily increased process costs. Wear and/or damage to the mixing device can also lead to an undesirable mixing result.
  • the expression "movable with respect to at least one degree of freedom”, which is also referred to in technical terms as a “flying arrangement”, is intended to mean that the motor unit moves along at least one spatial degree of freedom relative to the mixing trough can, i.e. is not completely rigidly connected to the mixing trough or to a frame connected to the mixing trough.
  • a torque that is introduced into the support unit is when the mixing trough is fully loaded with individual components or with a mixture and / or when using higher-viscosity individual components or a higher-viscosity mixture greater than with a lower loading of the mixing trough and/or less viscous individual components or a less viscous mixture.
  • the torque to be applied for mixing changes on the mixing tool and thus on the motor unit during mixing.
  • a high torque is required at the beginning of the mixing process in order to mix the individual components with one another, with the torque decreasing as the mixing process progresses and, in particular, can remain essentially constant from a certain degree of mixing onwards.
  • the arrangement according to the present invention can deliver evaluable signals even with a very low load on the mixing tool and thus on the motor unit. This is because even with a slightly greater resistance acting against the mixing tool compared to an empty mixing device, the forces introduced into the force detection unit increase. Furthermore, temperature differences at the mixing device can affect the power consumption for driving the mixing tool, for example by causing a drive belt to contract.
  • the arrangement according to the invention can always provide essentially constant values for the force detection unit regardless of the ambient conditions prevailing at the mixing device. Measuring the torque on the torque arm can provide more precise information about the course of the mixing process, especially when the mixer is operating with partial filling and low loads.
  • the motor unit can in particular be mounted on the mixing shaft, which is driven by the motor unit.
  • the combination of motor unit, mixing shaft and mixing tool can be referred to as "self-supporting" and can be supported relative to the mixing trough with respect to rotation of the motor unit about the mixing shaft.
  • a section of the mixing shaft can protrude from a rear wall of the mixing trough, wherein the motor unit can be arranged on a bearing acting between the motor unit and the mixing shaft.
  • the mixing device can comprise a control unit which is set up to control operation of the mixing device, in particular a mixing time and/or a rotation speed of the mixing tool.
  • the mixing device can be used as a self-regulating mixing device be designed, which parameters of the mixing process can be controlled based on the data recorded by the force detection unit.
  • the mixing device can also be connected to a control unit of a higher-level system, which, for example, in addition to the mixing device according to the invention, includes merchandise management devices, such as memories for storing individual components, scales, controlled flaps, which allow a material flow in the open state or in the closed state prevent this.
  • storage of the individual components can be connected to the mixing trough in order to supply the respective individual components to the mixing trough.
  • the individual components can be stored separately from one another and can only come into contact with one another in the mixing trough. This allows a mixing process to be better controlled, particularly when individual components react or combine with one another.
  • the control unit can be set up to carry out the feeding of the individual components into the mixing trough in an automated manner.
  • This automated control of the supply of the individual components into the mixing trough can be carried out, for example, based on the data that is evaluated from the force detection unit.
  • the individual components can be fed to the mixing trough in a desired quantity under the control of the control unit.
  • mixing ratios of the individual components for predetermined mixtures are stored in a storage unit, which is connected to the control unit, and/or values or ranges for the expected forces are stored, which are introduced into the force detection unit, furthermore It can be stored in the storage unit which individual component and in what quantity is to be supplied to the mixture if the expected forces introduced differ from the actual forces introduced into the force detection unit will, deviate. As an example, it may be specified to maintain a water-to-cement ratio of between 0.4 - 0.45. This value can be monitored based on a comparison of the expected forces to the actual forces detected via the force detection unit. If necessary, the mixture can be adjusted to change the water-to-cement ratio in a desired manner by feeding individual components into the mixing trough in an automated manner.
  • two diametrically opposed arms with respective mixing blades are attached to the mixing shaft in order to be able to compensate for an imbalance acting on the mixing shaft.
  • the mixing tool can be at least one arm with at least one mixing blade attached to it.
  • the support unit can comprise a device which is designed to be variable in length in order to change a position and/or orientation of the motor unit relative to the mixing trough.
  • a device can be implemented by an intermediate piece of the support unit, which has both a left-hand thread and a right-hand thread, with which respective adjacent sections of the support unit are in threaded engagement.
  • this intermediate piece is rotated clockwise or counterclockwise, the length of the support unit can be varied. In this way, manufacturing tolerances can be compensated for or a position and/or orientation of the motor unit relative to the mixing trough can be adjusted in a desired manner.
  • the support unit can comprise at least one joint which is designed to compensate for a change in the position and/or orientation of the motor unit relative to the mixing trough.
  • the at least one joint of the support unit can also be provided to compensate for manufacturing tolerances and thus prevent unwanted tensions or even damage to the mixing device.
  • the mixing device can advantageously be designed as a twin-shaft mixer, the mixing device in this case comprising a further mixing shaft which is set up to drive a further mixing tool arranged thereon.
  • a twin-shaft mixer can in particular make it possible for the mixing tools of the mixing shaft to rotate in opposite directions relative to the further mixing tools of the further mixing shaft in order to achieve an improved mixing process.
  • the twin-shaft mixer can further comprise a further motor unit which is set up to drive the further mixing shaft, the further motor unit being arranged on the mixing device so as to be movable relative to the mixing trough with respect to at least one degree of freedom.
  • the description that has so far been given in relation to one motor unit or one mixing shaft can also be valid in an analogous manner for the other motor unit or for the other mixing shaft.
  • such a twin-shaft mixer can be constructed fundamentally symmetrical to a central plane between the two mixing shafts and the two motor units.
  • the support unit can be designed in such a way that both motor units act on the force detection unit, or that each motor unit is assigned a separate force detection unit which is set up to detect a force which acts between the respective motor unit and the support unit. Accordingly, the two motor units can have a common support unit relative to the Mixing trough can be supported or each motor unit can be supported relative to the mixing trough via a specially designed support unit.
  • the arrangement of a separate force detection unit for each motor unit can make it possible to differentiate between forces which are introduced by one motor unit and which by the other motor unit. For example, it is possible to draw even more precise conclusions as to which side or component of the mixing device is damaged or requires maintenance.
  • the force detection unit can be designed as a measuring bolt or a load cell.
  • a measuring pin can be understood as the unit for absorbing force, which is connected to an external evaluation unit that outputs the mechanical influence of the unit for absorbing force as values.
  • a load cell can in particular be a structurally integral combination of a measuring bolt with an evaluation unit.
  • control unit can be set up to selectively supply a predetermined amount of at least one individual component during an ongoing mixing process based on forces detected by a force detection unit.
  • the final result of the mixing process can be controlled in a desired manner through the selective addition of individual components.
  • the motor unit can comprise an electric motor.
  • control unit can be set up to detect a state of wear of the mixing device and/or damage to the mixing device, in particular the mixing tool, and/or damage to the mixing device based on forces detected by a force detection unit Detect motor unit.
  • a mixing device according to the invention is generally designated by the reference number 10.
  • the mixing device 10 includes a mixing trough 12, into which individual components can be introduced and mixed into a mixture using mixing tools (not shown).
  • the mixing device 10 is designed as a so-called “double-shaft mixer”. This means that the mixing device 10 is designed here with two mixing shafts that run essentially parallel to one another, with in Figure 1 Only the right mixing shaft 16 can be seen, as in Figure 1 On the left side the corresponding mixing shaft is covered by a motor unit 18. For operation of the mixing device 10 is of course also on the right side of Figure 1 a corresponding motor unit is provided, which has been hidden here merely to simplify the description of the present invention.
  • the motor unit 18 here includes an electric motor 20, which has a a belt drive surrounded by a housing 22 drives a gear 24 and via this the mixing shaft arranged therein.
  • a mixing tool is arranged on each mixing shaft, which is set up to mix the individual components introduced into the mixing trough 12 to form a mixture.
  • the motor unit 18, in particular the electric motor 20, are attached to the mixing trough 12 in a floating arrangement. That is, in the present embodiment, the entire motor unit 18 is mounted on the associated mixing shaft with respect to five of the six possible spatial degrees of freedom.
  • the motor unit 18 is arranged displaceably relative to the mixing trough 12 only with respect to a rotational degree of freedom around the mixing shaft. This is also illustrated, for example, by elongated holes 26 in a motor mount 28, which is on the in Figure 1 right side is shown.
  • the mixing device 10 comprises a support unit 30, which connects the motor unit 18 to the mixing trough 12 (or here the motor holder 28 to a frame of the mixing trough 32).
  • the support unit 30 is in Figure 2 shown in greater detail. It can be seen that the in Figure 1 Motor unit 18 shown on the left and the one in Figure 1 Right motor unit, not shown, is supported relative to the mixing trough 12 via a common support unit 30.
  • the support unit 30 has a connecting element 34 for the motor unit 18, a connecting element 36 for the in Figure 1 (right) motor unit, not shown, and a connecting element 38 for attaching the support unit 30 to the mixing trough 12.
  • a force detection unit 40 is arranged between connecting element 38 and connecting element 36 and is designed to detect forces which act between connecting elements 34 and 38 or 36 and 38.
  • the force detection unit 40 also serves as an intermediate piece 42, which has a right-hand thread at one longitudinal end and a left-hand thread at its opposite longitudinal end, in order to be able to change a distance between the connecting elements 34 and 38 or 36 and 38. Furthermore, each intermediate piece 42 is provided with joints 44 at its two longitudinal ends in order to be able to compensate for an angular offset between the connecting elements 34 and 38 or 36 and 38.
  • the force detection unit 40 could also be arranged in at least one of the joints 44.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP22197847.1A 2022-09-26 2022-09-26 Dispositif de mélange Pending EP4342576A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22197847.1A EP4342576A1 (fr) 2022-09-26 2022-09-26 Dispositif de mélange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22197847.1A EP4342576A1 (fr) 2022-09-26 2022-09-26 Dispositif de mélange

Publications (1)

Publication Number Publication Date
EP4342576A1 true EP4342576A1 (fr) 2024-03-27

Family

ID=83457002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22197847.1A Pending EP4342576A1 (fr) 2022-09-26 2022-09-26 Dispositif de mélange

Country Status (1)

Country Link
EP (1) EP4342576A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2141908A1 (de) * 1971-08-20 1973-03-08 Bhs Bayerische Berg Doppelwellen-zwangsmischer
CH641973A5 (en) * 1978-11-21 1984-03-30 Biotechnolog Forschung Gmbh Ancillary device for measuring the torque of a stirring appliance
US5513912A (en) * 1994-01-21 1996-05-07 Janke & Kunkel Gmbh & Co. Kg Ika-Labortechnik Stirring apparatus with a holding device
WO2021110706A1 (fr) * 2019-12-02 2021-06-10 Ika - Werke Gmbh & Co. Kg Mélangeur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2141908A1 (de) * 1971-08-20 1973-03-08 Bhs Bayerische Berg Doppelwellen-zwangsmischer
CH641973A5 (en) * 1978-11-21 1984-03-30 Biotechnolog Forschung Gmbh Ancillary device for measuring the torque of a stirring appliance
US5513912A (en) * 1994-01-21 1996-05-07 Janke & Kunkel Gmbh & Co. Kg Ika-Labortechnik Stirring apparatus with a holding device
WO2021110706A1 (fr) * 2019-12-02 2021-06-10 Ika - Werke Gmbh & Co. Kg Mélangeur

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