WO2018197627A1 - Cleaning container for cleaning the mixing head of a mixing machine, and arrangement with a mixing machine and with a cleaning container of this kind - Google Patents

Cleaning container for cleaning the mixing head of a mixing machine, and arrangement with a mixing machine and with a cleaning container of this kind Download PDF

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Publication number
WO2018197627A1
WO2018197627A1 PCT/EP2018/060762 EP2018060762W WO2018197627A1 WO 2018197627 A1 WO2018197627 A1 WO 2018197627A1 EP 2018060762 W EP2018060762 W EP 2018060762W WO 2018197627 A1 WO2018197627 A1 WO 2018197627A1
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WO
WIPO (PCT)
Prior art keywords
cleaning container
mixing
mixing head
cleaning
container
Prior art date
Application number
PCT/EP2018/060762
Other languages
German (de)
French (fr)
Inventor
Nadine SCHWEINSBERG
Wolfgang Rueberg
Original Assignee
Dr. Herfeld Gmbh & Co. Kg
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 Dr. Herfeld Gmbh & Co. Kg filed Critical Dr. Herfeld Gmbh & Co. Kg
Priority to EP18721343.4A priority Critical patent/EP3615236B1/en
Publication of WO2018197627A1 publication Critical patent/WO2018197627A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned
    • 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
    • B01F33/35—Mixing after turning the mixing vessel upside down
    • 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
    • B01F35/10—Maintenance of mixers
    • B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0229—Suction chambers for aspirating the sprayed liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • B08B9/0936—Cleaning containers, e.g. tanks by the force of jets or sprays using rotating jets

Definitions

  • Cleaning container for cleaning the mixing head of a mixing machine and arrangement with a mixing machine and with such a cleaning container
  • the invention relates to a cleaning container for cleaning a mixing head of an industrial mixing machine. Furthermore, the invention relates to an arrangement with a mixing machine, comprising a mixing head, equipped with means for connecting it to a container containing a mix, which mixing head is pivotally mounted relative to a frame such that the mixing container formed from the mixing bowl and mixing head for performing a mixing process pivotally is, and has at least one rotationally driven mixing tool, and with such a cleaning container.
  • Industrial mixing machines are those used for the mixing, in particular, of bulk material, typically powdered bulk material, as is required, for example, for producing plastic granule mixtures or else in the paint industry.
  • Such mixing machines have a comparison with a frame pivotally mounted mixing head, which also serves to seal a container containing the mix.
  • This container is typically a mixing container.
  • the mixing container is connected for the purpose of mixing its contents to the mixing head, so that then by the mixing head and the container, a closed mixing container is formed.
  • the mixing head and the mixing container have complementary connection means so that the mixing container can be connected to the mixing head.
  • connection typically takes place via a flange projecting radially outwards from the mixing container or the mixing head, wherein the two flanges are pressed against one another with the interposition of a seal.
  • piston-cylinder actuators are used.
  • the mixing head is pivotally mounted on a frame to bring the mixing container formed from mixing head and mixing container in its mixing position in which the mixing tool or the mixing head are arranged at the bottom.
  • efforts are being made to achieve the desired mixing in as short a time as possible.
  • too much heat is not introduced into the mix, especially if it is sensitive to heat.
  • care must be taken to ensure that the heat input is not too large, since otherwise the particles to be mixed can cake with each other and on the inner wall of the mixing head or on the one or more mixing tools.
  • the mixing head must first be carefully cleaned so that not remaining in the mixing head mix of the previously mixed mix passes into the subsequent mixing, this contaminated accordingly. This is especially true when the different mixes contain different color pigmentations.
  • the cleaning of such a mixing head comprises the removal of mixed material dust adhering to its inner surface and the removal of mix material which has been gummed on the inner wall of the mixing head.
  • the tools are to be cleaned. To clean the mixing head, the tools are dismantled and manually subjected to a liquid cleaning. The inner wall of the mixing head is also subjected to liquid cleaning, often using liquid jet equipment. The cleaning is done manually. Since the cleaning must be carried out very carefully, the cleaning process takes a correspondingly long time.
  • the invention has for its object to propose a device with which the cleaning tion process of such a mixing head can be simplified and in particular also automated.
  • a cleaning container for cleaning a mixing head of an industrial mixing machine which cleaning container comprises a cleaning container with an opening and connecting means for connecting the same to the mixing head of an industrial mixing machine, wherein cleaning container is designed so that this together with the mixing head, if With its opening pointing to this, connected to this, forms a closed cleaning space, wherein in the cleaning container of the cleaning container, a blast wheel of a centrifugal blasting device is arranged with a direction of the inner surface of the mixing head throwing direction for blasting the inner surface of the mixing head.
  • the cleaning container has a cleaning container, which has an opening and connection means for connecting the cleaning container or its container to the mixing head.
  • connection means are typically those which have mixing vessels to be connected to the mixing head of the mixing machine otherwise for the process of mixing.
  • At least one blast wheel of a centrifugal blasting device is arranged in the cleaning container. Cleaning the inner wall of the mixing head is therefore dry.
  • the throwing fan of the blast wheel is directed to the inner wall of the mixing head.
  • the throwing fan is smaller than the surface facing the impeller of the inner wall of the mixing head.
  • the blast wheel with respect to the throwing direction of the blasting agent can be set, so that in the course of such a device successively reaches the entire inner surface of the mixing head at least once in the area of blasting media throwing fan.
  • the spinner wheel is thus moved with respect to its throwing fan on a predetermined trajectory for cleaning the inner surface of the mixing head. In this way, adhering to the inner surface of the mixing head mixed material is removed by blasting.
  • the cleaning of the mixing head is typically carried out in a position of the mixing head and the cleaning container connected thereto, in which the cleaning container is at the bottom and its top opening is directed to the downwardly open mixing head.
  • This also corresponds to the typical position of the mixing head, if a mixing container for mixing mixed material is connected to this.
  • the blasting medium is thrown in such a position of mixing head and cleaning container by the impeller against gravity on the inner surface of the mixing head.
  • the mixed material particles removed from the surface of the mixing head then, together with the material removed from the surface, fall downwards due to gravity and thus out of the mixing head and into the cleaning container, can be collected therein and led away.
  • a particular advantage in the cleaning of the inner surface of a mixing head by blasting is that such cleaning is carried out dry and therefore there is no risk that in a subsequent mixing of the cleaning head mixing process cleaning liquid residues could be registered therein.
  • blasting agent one will use one which does not damage the inner surface of the mixing head. This therefore has a lower hardness than the hardness of the inner surface of the mixing head forming material.
  • Another advantage of such a cleaning of the mixing head is also that, in principle, the at least one tool for the process of cleaning the mixing head can also remain in this. This may not be the case with any of the mixheads removing remainders, but for many. In such a case, one has also saved in the cleaning of a mixing head then the removal and installation of the at least one mixing tool and its separate cleaning.
  • the centrifugal blasting device whose blast wheel is arranged within the cleaning container of the cleaning container, has a blasting agent supply, via which the blasting agent is supplied to the blast wheel.
  • a blasting agent which is not resistant under ambient conditions is used according to one embodiment.
  • These are typically dry ice particles, for example in pellet form.
  • Cleaning the inner surface of the mixing head, including its tools, by dry blasting in the closed cleaning vessel has several advantages. Due to the low Mohs hardness of dry ice particles (hardness 2 according to Mohs), damage to the inner surface of the mixing head and / or the tool or tools therein is excluded.
  • the cleaning effect is particularly effective with respect to mixing material adhering to the inner surface of the mixing head or its at least one tool, which can be, for example, a plastic compound.
  • the adhering to the inner surface of the mixing head mix is removed in a dry ice blasting less by the kinetic energy than by the caused by the dry ice blasting embrittlement and concomitant flaking of at the inner surface of the mixing head.
  • the dry ice particles strike the soiled inner surface of the mixing head, they sublime, resulting in immediate embrittlement of the adhering mixed material.
  • the volume on the inner surface of the mixing head of impinging dry ice particles increases by 700 to 800 times the volume of the particles or pellets.
  • an extraction system is connected to the cleaning container or its cleaning container, through which the gas (CO.sub.2) produced during the sublimation is combined be removed from the cleaning container with the mixing material removed from the inner wall of the mixing head and / or the tool (s).
  • the resulting due to the sublimation in the cleaning container formed from the mixing head and cleaning container pressure supports the expulsion of the gas, which carries the detached from the inner surface of the mixing head particles out of the cleaning container.
  • the suction can be equipped with a suction pump to support this process.
  • the mixed gas mixture withdrawn from the cleaning container can be cleaned, for example, in an air classifier, wherein the mix removed from the mixing head can be returned to its original destination.
  • a purge line can be connected to the cleaning container or its cleaning container, via which a gaseous rinsing fluid, for example air, is introduced after the end of the cleaning process for rinsing the interior of the cleaning container for removing mixed-material dust which may still be present therein.
  • a gaseous rinsing fluid for example air
  • such a cleaning container for cleaning the mixing head of a mixing machine plastic particles or particles of aluminum or an aluminum alloy are used as blasting.
  • the cleaning process is sometimes a little more abrasive with such a material than Trockeis.
  • the cleaning space, formed from the mixing head and the cleaning container connected thereto can be flushed after the blasting process with a gas, for example ambient air.
  • cleaning can be made automated.
  • connection of the cleaning container to the mixing container can be made automatically and thus automatically.
  • the cleaning container is typically in such a case hingedly connected to the frame of the mixing machine and is connected at a change of mixed material for performing the cleaning process to the mixing head and removed after completing the cleaning process of this again, so then immediately the next mixing container are connected to the mixing head to perform another mixing process can. It is understood that with such a cleaning container necessary for cleaning the mixing head downtime of the mixing machine are significantly reduced.
  • a resistant blasting agent suitable for the removal of mixing material adhering to the inner wall of the mixing head and / or the tools is used as blasting agent.
  • This can also be provided in such a way that in a first jet step, a resistant blasting agent, for example plastic particles and / or particles of aluminum or an aluminum alloy and in a second blasting step the blasting with dry ice and thus with a non-resistant blasting agent is performed.
  • Fig. 1 a schematic, perspective view of an industrial
  • Mixing machine with a container connected to the mixing head, a mixture-containing container in the mixing position of the mixing head,
  • FIG. 2 shows a schematic longitudinal section of the mixing head in its docking position together with a cleaning container before docking to the mixing head and
  • FIG. 2 with the cleaning container docked to the mixing head during the process of carrying out a cleaning of the inside of the mixing head.
  • a mixing machine 1 for industrial purposes has a frame 2, on which a mixing head 3 is pivotally mounted. The pivot axis of the mixing head 3 is identified by the reference symbol S. About a drive 4, the mixing head 3 is pivotable about its pivot axis at least 180 °. In the embodiment shown in Figure 1, the pivoting of the mixing head 3 serves the purpose that in its relation to the illustration in Figure 1 rotated by 180 ° position a Mischgutcontainer 5 can be connected to the mixing head to after connecting the same to the mixing head 3 then the From the mixing container 5 and mixing head 3 formed unit in the mixing position shown in Figure 1 of the mixing head 3 to pivot.
  • the above-described unit can be pivoted about the pivot axis S.
  • the mixing head 3 has a circumferential connecting flange projecting radially outwards.
  • the mixing container 5 has a complementary connecting flange. Both flanges are held together with the interposition of a seal for producing the unit from mixing head 3 and mixing container 5 by means known per se, for example by means of a piston-cylinder actuator.
  • mixing head 3 of the illustrated embodiment two mixing tools are arranged, which are each driven by an electric motor.
  • a first electric motor 6 serves to drive a first mixing tool
  • a second electric motor 7 serves to drive the second mixing tool.
  • the number of mixing tools driven in the mixing head 3 is of no relevance.
  • FIG. 2 shows, in a simplified representation, the mixing head 3 of the mixing machine 1 with only one of its mixing tools, which is shown only schematically in FIG.
  • the mixing tool is indicated in the figure 2 by the reference numeral 8.
  • the mixing head 3 In the position shown in Figure 2, the mixing head 3 is in its docking position, so that a mixing container 5 can be connected to this. If another mix is to be mixed with the mixing head 3 after the mixing of a first mix in a subsequent mixing operation, it is necessary to free the mixhead 3 from residues of the mix previously mixed therein.
  • the cleaning container 10 comprises a cleaning container 1 1, which in the illustrated embodiment has a similar shape as a mixing container 5.
  • the cleaning container 10 has a top opening whose geometry of the bottom opening of the Mixing head 3 corresponds.
  • On the outside of a connecting flange is attached.
  • the cleaning container 10 of the illustrated embodiment is arranged in a manner not shown on the frame 2 of the mixing machine 1 and can be brought into its docking position shown for connection to the mixing head 3 in Figure 2 by means of a Schwenkaktors.
  • a blast wheel 12 of a centrifugal blasting device is arranged within the cleaning container 1 1 of the cleaning container 10.
  • the impeller 12 is, as indicated in Figure 2 by the arrows, in the vertical direction and about the pivot axis 13 adjustable.
  • the spinner 12 is also pivotable about a pivot axis 13.1 orthogonal to the pivot axis 13.
  • the blast wheel 12 is used for blasting the inside of the mixing head 3.
  • the supply of the blasting agent is not shown in Figure 2 for the sake of simplicity.
  • the Strahlkarzu slaughter might be within the cleaning container 1 1. Due to the adjustability of the impeller 12, in particular its pivotability about the pivot axis 13, the throwing fans directed towards the inside of the mixing head 3 can be pivoted over the entire inner surface of the mixing head 3, so that the entire surface can be successively cleaned by blasting. Due to the vertical adjustability of the centrifugal wheel 12, the opening width of the throwing fan of the blasting medium can be set up.
  • a blasting agent for cleaning the inner surface of the mixing head 3 including its tool 8, a non-resistant blasting agent, in the form of dry ice pellets.
  • FIG. 3 schematically shows the throwing fan 14 made of dry ice pellets directed onto the inner wall 9 of the mixing head 3, ejected from the centrifugal wheel 12.
  • the centrifugal wheel 12 is successively pivoted about its pivot axis 13, so that the entire inner surface of the mixing head is in the area of the jet 14 arrived. In this case, a pivoting takes place equally about both pivot axes 13, 13.1.
  • the mixing tool 8 is at the same time freed from mixed material adhering thereto.
  • this is axially adjustable in a manner not shown in order to take a greater distance to the inner wall 9 with its pointing to the inner wall 9 back. In such a position, the cleaning effect is better.
  • the mixing tool 8 may rotate slowly to access the interior wall areas, which otherwise might be shaded with respect to dry ice particle bombardment.
  • the cleaning of the inner wall 9 of the mixing head 3 is also the same with an inclined in the direction of movement of the throwing fan 14 orientation, so that it impinges on the inner wall 9 at an angle. This measure can support the detachment effect.
  • the cleaning container 1 1 is connected to a suction, not shown in the figures.
  • the suction tube, through which the mixing container nis 1 1 is connected to the suction is indicated by the reference numeral 15.
  • About the suction pipe 15 and the suction resulting from the sublimation of the dry ice on the inner wall 9 of the mixing head 3 and the gas removed in the course of dry ice blasting from the surface Mischgutreste is removed from the cleaning container 10. Due to the taking place on the inner wall 9 as a result of the dry ice irradiation sublimation and the consequent extreme increase in volume sweeps a gas flow along the inner wall 9 of the mixing head 3 in the cleaning container 10 into and to the suction pipe 15 out. Extracted via the suction tube 15 thus sublimated from the dry ice gas - CO2 - and transported with the gas stream and the surface of the mixing head 3 Mischgutpumble distant.
  • scavenging air is introduced into the cleaning container 10 and mixing head 3 formed cleaning container and withdrawn through the suction.
  • This may be, for example, heated air in order to remove any condensed moisture present in the cleaning container. In this way, possibly existing cleaning residues from the mixing head 3 and the cleaning container 10 are removed.
  • the cleaning container 10 is separated from the mixing head 3 and pivoted back to its non-use position on the frame 2 of the mixing machine 1. Then, at the mixing head 3, the next mixing container with mixing material located therein can be immediately connected and used for the purpose of mixing the mixed material.
  • a blast wheel 12 is arranged in the cleaning container 10. Quite possible is also an embodiment in which a plurality of centrifugal wheels are arranged at different positions therein in the cleaning container. These are connected according to an embodiment of a common Schleuderffenzu operation.
  • the drive shaft of the tool 8 is not over in the figures Shaft seal shown led into the interior of the mixing head 3.
  • it is provided to temper the shaft seal so that it can not be embrittled and damaged during a cleaning of the mixing head with dry ice or even destroyed. With such tempering, the shaft seal is maintained at a suitable temperature, for example at a temperature above 10 ° C.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

A cleaning container (10) for cleaning a mixing head (3) of an industrial mixing machine (1) comprises a cleaning vessel (11) with an opening and with connection means for connecting same to the mixing head (3). The cleaning vessel (11) is designed such that it, together with the mixing head (3), forms a closed cleaning chamber when the opening of the cleaning vessel faces the mixing head and is connected thereto, wherein in the cleaning vessel (11) of the cleaning container (10) there is arranged a blast wheel (12) of a centrifugal blasting device with a delivery direction directed towards the inner surface of the mixing head (3) for centrifugal blasting of the inner surface of the mixing head (3).

Description

Reinigungscontainer zum Reinigen des Mischkopfes einer Mischmaschine sowie Anordnung mit einer Mischmaschine und mit einem solchen Reinigungscontainer  Cleaning container for cleaning the mixing head of a mixing machine and arrangement with a mixing machine and with such a cleaning container
Die Erfindung betrifft einen Reinigungscontainer zum Reinigen eines Mischkopfes einer industriellen Mischmaschine. Ferner betrifft die Erfindung eine Anordnung mit einer Mischmaschine, umfassend einen Mischkopf, ausgestattet mit Mitteln zum Anschließen desselben an ein ein Mischgut beinhaltendes Behältnis, welcher Mischkopf schwenkbar gegenüber einem Gestell dergestalt gelagert ist, dass der aus Mischbehältnis und Mischkopf gebildete Mischbehälter zum Durchführen eines Mischprozesses schwenkbar ist, und wenigstens ein rotatorisch angetriebenes Mischwerkzeug aufweist, und mit einem solchen Reinigungscontainer. The invention relates to a cleaning container for cleaning a mixing head of an industrial mixing machine. Furthermore, the invention relates to an arrangement with a mixing machine, comprising a mixing head, equipped with means for connecting it to a container containing a mix, which mixing head is pivotally mounted relative to a frame such that the mixing container formed from the mixing bowl and mixing head for performing a mixing process pivotally is, and has at least one rotationally driven mixing tool, and with such a cleaning container.
Bei industriellen Mischmaschinen handelt es sich um solche, wie diese zum Mischen insbesondere von Schüttgut, typischerweise pulverförmigem Schüttgut, wie dieses etwa zum Erstellen von Kunststoffgranulatgemi- schen oder auch in der Farbindustrie benötigt wird, eingesetzt werden. Derartige Mischmaschinen verfügen über einen gegenüber einem Gestell schwenkbar gelagerten Mischkopf, der gleichzeitig zum Verschließen eines das Mischgut enthaltenden Behältnisses dient. Bei diesem Behältnis handelt es sich typischerweise um einen Mischcontainer. Der Mischcontainer wird für die Zwecke einer Mischung seines Inhaltes an den Mischkopf angeschlossen, sodass sodann durch den Mischkopf und das Behältnis ein geschlossener Mischbehälter gebildet ist. Der Mischkopf und das Mischbehältnis verfügen über komplementäre Anschlussmittel, damit das Mischbehältnis an den Mischkopf angeschlossen werden kann. Der Anschluss erfolgt typischerweise über einen in radialer Richtung nach außen von dem Mischbehältnis bzw. dem Mischkopf abragenden Flansch, wobei die beiden Flansche unter Zwischenschaltung einer Dichtung aneinander angepresst sind. Hierfür dienen beispielsweise Kolben-Zylinder- Aktoren. Der Mischkopf ist schwenkbar an einem Gestell gelagert, um den aus Mischkopf und Mischcontainer gebildeten Mischbehälter in seine Mischstellung zu bringen, in der das oder die Mischwerkzeuge des Mischkopfes zu unterst angeordnet sind. Bei derartigen industriellen Mischmaschinen ist man bestrebt, die gewünschte Durchmischung in einer möglichst kurzen Zeit zu erreichen. Zu beachten ist bei dem Mischprozess, dass in das Mischgut, insbesondere wenn dieses wärmeempfindlich ist, nicht zu viel Wärme eingetragen wird. Gerade bei einem Mischen von Kunststoffgranulaten oder Kunststofffarbpigmenten ist darauf zu achten, dass der Wärmeeintrag nicht zu groß ist, da ansonsten die zu mischenden Partikel miteinander und an der Innenwand des Mischkopfes oder auch an dem oder den Mischwerkzeugen anbacken können. Industrial mixing machines are those used for the mixing, in particular, of bulk material, typically powdered bulk material, as is required, for example, for producing plastic granule mixtures or else in the paint industry. Such mixing machines have a comparison with a frame pivotally mounted mixing head, which also serves to seal a container containing the mix. This container is typically a mixing container. The mixing container is connected for the purpose of mixing its contents to the mixing head, so that then by the mixing head and the container, a closed mixing container is formed. The mixing head and the mixing container have complementary connection means so that the mixing container can be connected to the mixing head. The connection typically takes place via a flange projecting radially outwards from the mixing container or the mixing head, wherein the two flanges are pressed against one another with the interposition of a seal. For this example, piston-cylinder actuators are used. The mixing head is pivotally mounted on a frame to bring the mixing container formed from mixing head and mixing container in its mixing position in which the mixing tool or the mixing head are arranged at the bottom. In such industrial mixing machines, efforts are being made to achieve the desired mixing in as short a time as possible. It should be noted in the mixing process that too much heat is not introduced into the mix, especially if it is sensitive to heat. Especially when mixing plastic granules or plastic color pigments, care must be taken to ensure that the heat input is not too large, since otherwise the particles to be mixed can cake with each other and on the inner wall of the mixing head or on the one or more mixing tools.
Wenn nach dem Mischen eines ersten Mischgutes mit der Mischmaschine ein anderes Mischgut gemischt werden soll, muss der Mischkopf vorher sorgfältig gereinigt werden, damit nicht im Mischkopf verbliebenes Mischgut des zuvor gemischten Mischgutes in das nachfolgend zu mischende gelangt, dieses mithin kontaminiert. Dies gilt vor allem dann, wenn die unterschiedlichen Mischgüter unterschiedliche Farbpigmentierungen enthalten. Das Reinigen eines solchen Mischkopfes umfasst das Entfernen von an seiner inneren Oberfläche anhaftenden Mischgutstaub sowie das Entfernen von an der Innenwand des Mischkopfes angebackenem Mischgut. Zusätzlich sind die Werkzeuge zu reinigen. Zum Reinigen des Mischkopfes werden die Werkzeuge demontiert und manuell einer Flüssigkeitsreinigung unterzogen. Die Innenwand des Mischkopfes wird ebenfalls einer Flüssigkeitsreinigung unterzogen, und zwar oftmals unter Verwendung von Flüssigkeitsstrahlgeräten. Die Reinigung wird manuell durchgeführt. Da die Reinigung sehr sorgfältig durchgeführt werden muss, dauert der Reini- gungsprozess entsprechend lange. Bei einem Mischen von Schüttgut, was mit derartigen industriellen Mischmaschinen die Regel sein dürfte, ist im Anschluss an den Reinigungsvorgang darauf zu achten, dass die Werkzeuge und die Innenwand des Reinigungscontainers vollständig abgetrocknet sind, damit keinerlei Reinigungsflüssigkeitströpfchen in das anschließend zu mischende Mischgut gelangen. In aller Regel erfolgt das Trocknen an Umgebungsluft, was neben dem eigentlichen Reinigungspro- zess zusätzlich eine entsprechende Stillstandszeit der Mischmaschine zufolge hat. If after mixing a first mix with the mixing machine another mix should be mixed, the mixing head must first be carefully cleaned so that not remaining in the mixing head mix of the previously mixed mix passes into the subsequent mixing, this contaminated accordingly. This is especially true when the different mixes contain different color pigmentations. The cleaning of such a mixing head comprises the removal of mixed material dust adhering to its inner surface and the removal of mix material which has been gummed on the inner wall of the mixing head. In addition, the tools are to be cleaned. To clean the mixing head, the tools are dismantled and manually subjected to a liquid cleaning. The inner wall of the mixing head is also subjected to liquid cleaning, often using liquid jet equipment. The cleaning is done manually. Since the cleaning must be carried out very carefully, the cleaning process takes a correspondingly long time. When mixing bulk material, which should be the rule with such industrial mixing machines, it must be ensured after the cleaning process that the tools and the inner wall of the cleaning container are completely dried so that no cleaning liquid droplets get into the mixture to be subsequently mixed. As a rule, the drying takes place in ambient air, which in addition to the actual cleaning process additionally has a corresponding downtime of the mixing machine.
Ausgehend von diesem diskutierten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung vorzuschlagen, mit der der Reini- gungsprozess eines solchen Mischkopfes vereinfacht und insbesondere auch automatisiert vorgenommen werden kann. Zudem wäre es wünschenswert, wenn die Stillstandszeit einer solchen Mischmaschine aufgrund einer Mischkopfreinigung verkürzt wäre. Based on this discussed prior art, the invention has for its object to propose a device with which the cleaning tion process of such a mixing head can be simplified and in particular also automated. In addition, it would be desirable if the downtime of such a mixing machine would be shortened due to a mixing head cleaning.
Gelöst wird diese Aufgabe erfindungsgemäß durch einen Reinigungscontainer zum Reinigen eines Mischkopfes einer industriellen Mischmaschine, welcher Reinigungscontainer ein Reinigungsbehältnis mit einer Öffnung und mit Anschlussmittel zum Anschließen desselben an den Mischkopf einer industriellen Mischmaschine umfasst, wobei Reinigungsbehältnis ausgelegt ist, damit dieses zusammen mit dem Mischkopf, wenn mit seiner Öffnung zu diesem weisend, an diesen angeschlossen, einen geschlossenen Reinigungsraum bildet, wobei in dem Reinigungsbehältnis des Reinigungscontainers ein Schleuderrad einer Schleuderstrahleinrichtung mit einer zu der inneren Oberfläche des Mischkopfes gerichteten Wurfrichtung zum Schleuderstrahlen der inneren Oberfläche des Mischkopfes angeordnet ist. This object is achieved according to the invention by a cleaning container for cleaning a mixing head of an industrial mixing machine, which cleaning container comprises a cleaning container with an opening and connecting means for connecting the same to the mixing head of an industrial mixing machine, wherein cleaning container is designed so that this together with the mixing head, if With its opening pointing to this, connected to this, forms a closed cleaning space, wherein in the cleaning container of the cleaning container, a blast wheel of a centrifugal blasting device is arranged with a direction of the inner surface of the mixing head throwing direction for blasting the inner surface of the mixing head.
Mit einem solchen Reinigungscontainer ist es möglich, die mit Mischgut in Kontakt kommende Innenwand eines Mischkopfes in einem geschlossenen Reinigungsbehältnis zu reinigen. Zu diesem Zweck hat der Reinigungscontainer ein Reinigungsbehältnis, welches eine Öffnung und Anschlussmittel zum Anschließen des Reinigungscontainers beziehungswie- se seines Behältnisses an den Mischkopf aufweist. Bei diesen Anschlussmitteln handelt es sich typischerweise um solche, die an den Mischkopf der Mischmaschine ansonsten für den Vorgang des Mischens anzuschließende Mischbehälter aufweisen. Vorteilhaft an einer Reinigung der Innenwand des Mischkopfes in einem geschlossenen Raum, der durch den Mischkopf und den Reinigungscontainer beziehungsweise sein Mischbehältnis gebildet ist, ist das keine zusätzlichen Ablaufeinrichtungen für Flüssigkeiten oder andere Abdeckungen zur Vermeidung einer Verschmutzung der Mischkopfumgebung vorgesehen sein müssen. Die innere Oberfläche des Mischkopfes, also: diejenige Oberfläche, die bei einem Mischbetrieb des Mischkopfes mit dem Mischgut in Kontakt gelangt, wird im Wege eines Strahlprozesses gereinigt. Zu diesem Zweck ist in dem Reinigungscontainer zumindest ein Schleuderrad einer Schleuderstrahleinrichtung angeordnet. Das Reinigen der Innenwand des Mischkopfes erfolgt daher trocken. Der Wurffächer des Schleuderrades ist auf die Innenwand des Mischkopfes gerichtet. Typischerweise ist der Wurffächer kleiner als die zu dem Schleuderrad weisende Oberfläche der Innenwand des Misch kopfes. Bei einer solchen Ausgestaltung ist das Schleuderrad bezüglich der Wurfrichtung des Strahlmittels einrichtbar, sodass im Zuge einer solchen Einrichtung sukzessive die gesamte innere Oberfläche des Mischkopfes wenigstens einmal in den Bereich des Strahlmittelwurffächers gelangt. Das Schleuderrad wird somit in Bezug auf seinen Wurffächer auf einer vorgegebenen Bewegungsbahn zum Reinigen der inneren Oberfläche des Mischkopfes bewegt. Auf diese Weise wird an der inneren Oberfläche des Mischkopfes anhaftendes Mischgut durch Strahlen abgetragen. Das Reinigen des Mischkopfes erfolgt typischerweise in einer Stellung des Mischkopfes und des daran angeschlossenen Reinigungscontainers, in der sich der Reinigungscontainer zu unterst befindet und seine oberseitige Öffnung zu dem nach unten offenen Mischkopf gerichtet ist. Dieses entspricht auch der typischen Stellung des Mischkopfes, wenn an diesen ein Mischcontainer zum Mischen von Mischgut angeschlossen ist. Das Strahlmittel wird in einer solchen Stellung von Mischkopf und Reinigungscontainer durch das Schleuderrad gegen die Schwerkraft auf die innere Oberfläche des Mischkopfes geschleudert. Die von der Oberfläche des Mischkopfes entfernten Mischgutpartikel fallen dann zusammen mit dem von der Oberfläche entfernten Material schwerkraftbedingt nach unten und somit aus dem Mischkopf heraus und in den Reinigungscontainer hinein, können darin gesammelt und weggeführt werden. With such a cleaning container, it is possible to clean the interior wall of a mixing head coming into contact with the mixture in a closed cleaning container. For this purpose, the cleaning container has a cleaning container, which has an opening and connection means for connecting the cleaning container or its container to the mixing head. These connection means are typically those which have mixing vessels to be connected to the mixing head of the mixing machine otherwise for the process of mixing. An advantage of cleaning the inner wall of the mixing head in a closed space, which is formed by the mixing head and the cleaning container or its mixing container that no additional drainage devices for liquids or other covers must be provided to prevent contamination of the mixing head environment. The inner surface of the mixing head, ie: that surface, which comes into contact with the mix in a mixed operation of the mixing head is cleaned by means of a blasting process. For this purpose, at least one blast wheel of a centrifugal blasting device is arranged in the cleaning container. Cleaning the inner wall of the mixing head is therefore dry. The throwing fan of the blast wheel is directed to the inner wall of the mixing head. Typically, the throwing fan is smaller than the surface facing the impeller of the inner wall of the mixing head. In such an embodiment, the blast wheel with respect to the throwing direction of the blasting agent can be set, so that in the course of such a device successively reaches the entire inner surface of the mixing head at least once in the area of blasting media throwing fan. The spinner wheel is thus moved with respect to its throwing fan on a predetermined trajectory for cleaning the inner surface of the mixing head. In this way, adhering to the inner surface of the mixing head mixed material is removed by blasting. The cleaning of the mixing head is typically carried out in a position of the mixing head and the cleaning container connected thereto, in which the cleaning container is at the bottom and its top opening is directed to the downwardly open mixing head. This also corresponds to the typical position of the mixing head, if a mixing container for mixing mixed material is connected to this. The blasting medium is thrown in such a position of mixing head and cleaning container by the impeller against gravity on the inner surface of the mixing head. The mixed material particles removed from the surface of the mixing head then, together with the material removed from the surface, fall downwards due to gravity and thus out of the mixing head and into the cleaning container, can be collected therein and led away.
Ein besonderer Vorteil in dem Reinigen der inneren Oberfläche eines Mischkopfes durch Strahlen liegt darin begründet, dass eine solche Reinigung trocken vorgenommen wird und daher nicht die Gefahr besteht, dass in einem sich an die Reinigung des Mischkopfes anschließenden Mischvorgang Reinigungsflüssigkeitsreste darin eingetragen werden könnten. Als Strahlmittel wird man ein solches einsetzen, mit dem eine Beschädigung der inneren Oberfläche des Mischkopfes nicht erfolgt. Dieses hat daher eine geringere Härte als die Härte des die innere Oberfläche des Mischkopfes bildenden Materials. Ein weiterer Vorteil einer solchen Reinigung des Mischkopfes ist auch, dass grundsätzlich das zumindest eine Werkzeug für den Prozess der Reinigung des Mischkopfes auch in diesem verbleiben kann. Dieses mag nicht bei jedwedem aus dem Mischkopf zu entfernenden Mischgutresten zutreffen, jedoch für zahlreiche. In einem solchen Fall hat man bei der Reinigung eines Mischkopfes sodann auch den Aus- und Einbau des zumindest einen Misch Werkzeuges und seine separate Reinigung eingespart. A particular advantage in the cleaning of the inner surface of a mixing head by blasting is that such cleaning is carried out dry and therefore there is no risk that in a subsequent mixing of the cleaning head mixing process cleaning liquid residues could be registered therein. As blasting agent, one will use one which does not damage the inner surface of the mixing head. This therefore has a lower hardness than the hardness of the inner surface of the mixing head forming material. Another advantage of such a cleaning of the mixing head is also that, in principle, the at least one tool for the process of cleaning the mixing head can also remain in this. This may not be the case with any of the mixheads removing remainders, but for many. In such a case, one has also saved in the cleaning of a mixing head then the removal and installation of the at least one mixing tool and its separate cleaning.
Die Schleuderstrahlvorrichtung, deren Schleuderrad innerhalb des Reinigungsbehältnisses des Reinigungscontainers angeordnet ist, verfügt über eine Strahlmittelzuführung, über die das Strahlmittel dem Schleuderrad zugeführt wird. Für die Zwecke des Reinigens des Mischkopfes einer industriellen Mischmaschine wird gemäß einer Ausgestaltung ein unter Umgebungsbedingungen nicht beständiges Strahlmittel eingesetzt. Hierbei handelt es sich typischerweise um Trockeneispartikel, beispielsweise in Pelletform. Das Reinigen der inneren Oberfläche des Mischkopfes einschließlich seiner Werkzeuge durch Trockeneistrahlen in dem geschlossenen Reinigungsbehälter hat etliche Vorteile. Aufgrund der nur geringen Mohs'schen Härte von Trockeneispartikeln (Härte 2 nach Mohs) ist eine Beschädigung der inneren Oberfläche des Mischkopfes und/oder des oder der darin befindlichen Werkzeuge ausgeschlossen. Dennoch ist die Reinigungswirkung in Bezug auf an der inneren Oberfläche des Mischkopfes bzw. seinem zumindest einen Werkzeug anhaftendes Mischgut, bei dem es sich beispielsweise um Kunststoffcompound handeln kann, besonders wirkungsvoll. Das an der inneren Oberfläche des Mischkopfes anhaftende Mischgut wird bei einem Trockeneisstrahlen weniger durch die kinetische Energie entfernt als vielmehr durch die durch den Trockeneisbeschuss bewirkte Versprödung und ein damit einhergehendes Abplatzen von an der inneren Oberfläche des Mischkopfes. Beim Aufprall der Trockeneispartikel auf die verschmutzte innere Oberfläche des Mischkopfes sublimie- ren diese, was zu einer sofortigen Versprödung des anhaftenden Mischgutes führt. Zugleich vergrößert sich das Volumen auf der inneren Oberfläche des Mischkopfes auftreffender Trockeneispartikel um das 700- bis 800-fache des Volumens der Partikel bzw. Pellets. Dieses erfolgt quasi schlagartig, sodass durch diese plötzliche Volumenvergrößerung versprö- dete, und insbesondere dann nur noch lose an der Innenwand des Mischkopfes anhaftende Mischgutreste abgelöst und weggeführt werden. Bei einer solchen Ausgestaltung ist es zweckmäßig, wenn an den Reinigungscontainer bzw. sein Reinigungsbehältnis eine Absaugung angeschlossen ist, durch die das bei der Sublimation entstehende Gas (CO2) zusammen mit den von der Innenwand des Mischkopfes und/oder dem oder den Werkzeugen entfernten Mischgut aus dem Reinigungsbehälter abgeführt werden. Der aufgrund der Sublimation in dem aus Mischkopf und Reinigungscontainer gebildeten Reinigungsbehälter entstehende Druck unterstützt das Austreiben des Gases, welches die von der inneren Oberfläche des Mischkopfes abgelösten Partikeln mitführt, aus dem Reinigungsbehälter heraus. Die Absaugung kann zur Unterstützung dieses Prozesses mit einer Saugpumpe ausgestattet sein. Das aus dem Reinigungsbehälter abgezogene Gas-Mischgutpartikel-Gemisch kann beispielsweise in einem Windsichter gereinigt werden, wobei das aus dem Mischkopf entfernte Mischgut wieder seiner ursprünglichen Bestimmung zugeführt werden kann. Gleiches gilt für das abgezogene Gas - CO2 -, aus dem wiederum Trockeneispartikel, beispielsweise in Pelletform, hergestellt werden können. The centrifugal blasting device whose blast wheel is arranged within the cleaning container of the cleaning container, has a blasting agent supply, via which the blasting agent is supplied to the blast wheel. For the purposes of cleaning the mixing head of an industrial mixing machine, a blasting agent which is not resistant under ambient conditions is used according to one embodiment. These are typically dry ice particles, for example in pellet form. Cleaning the inner surface of the mixing head, including its tools, by dry blasting in the closed cleaning vessel has several advantages. Due to the low Mohs hardness of dry ice particles (hardness 2 according to Mohs), damage to the inner surface of the mixing head and / or the tool or tools therein is excluded. Nevertheless, the cleaning effect is particularly effective with respect to mixing material adhering to the inner surface of the mixing head or its at least one tool, which can be, for example, a plastic compound. The adhering to the inner surface of the mixing head mix is removed in a dry ice blasting less by the kinetic energy than by the caused by the dry ice blasting embrittlement and concomitant flaking of at the inner surface of the mixing head. When the dry ice particles strike the soiled inner surface of the mixing head, they sublime, resulting in immediate embrittlement of the adhering mixed material. At the same time, the volume on the inner surface of the mixing head of impinging dry ice particles increases by 700 to 800 times the volume of the particles or pellets. This takes place virtually abruptly, so that by this sudden increase in volume embrittled, and in particular then only loosely adhering to the inner wall of the mixing head mixed residues are removed and led away. In such a configuration, it is expedient if an extraction system is connected to the cleaning container or its cleaning container, through which the gas (CO.sub.2) produced during the sublimation is combined be removed from the cleaning container with the mixing material removed from the inner wall of the mixing head and / or the tool (s). The resulting due to the sublimation in the cleaning container formed from the mixing head and cleaning container pressure supports the expulsion of the gas, which carries the detached from the inner surface of the mixing head particles out of the cleaning container. The suction can be equipped with a suction pump to support this process. The mixed gas mixture withdrawn from the cleaning container can be cleaned, for example, in an air classifier, wherein the mix removed from the mixing head can be returned to its original destination. The same applies to the withdrawn gas - CO2 - from which, in turn, dry ice particles, for example in pellet form, can be produced.
An den Reinigungscontainer bzw. sein Reinigungsbehältnis kann eine Spülleitung angeschlossen sein, über die ein gasförmiges Spülfluid, beispielsweise Luft, nach Abschluss des Reinigungsvorganges zum Spülen des Inneren des Reinigungsbehälters zum Entfernen von darin unter Umständen noch befindlichen Mischgutstaubes eingeleitet wird. A purge line can be connected to the cleaning container or its cleaning container, via which a gaseous rinsing fluid, for example air, is introduced after the end of the cleaning process for rinsing the interior of the cleaning container for removing mixed-material dust which may still be present therein.
In einer anderen Ausgestaltung des Betriebs eines solchen Reinigungscontainers zum Reinigen des Mischkopfes einer Mischmaschine werden Kunststoffpartikel oder auch Partikel aus Aluminium oder einer Aluminiumlegierung als Strahlgut verwendet. Der Reinigungsvorgang ist mit einem solchen Material mitunter etwas abrasiver als mit Trockeis. Zum Entfernen von Strahlmittelresten kann der Reinigungsraum, gebildet aus dem Mischkopf und dem daran angeschlossenen Reinigungscontainer nach dem Strahlvorgang mit einem Gas, beispielsweise Umgebungsluft gespült werden. In another embodiment of the operation of such a cleaning container for cleaning the mixing head of a mixing machine plastic particles or particles of aluminum or an aluminum alloy are used as blasting. The cleaning process is sometimes a little more abrasive with such a material than Trockeis. To remove residual blasting material, the cleaning space, formed from the mixing head and the cleaning container connected thereto, can be flushed after the blasting process with a gas, for example ambient air.
Vorteilhaft ist bei Reinigung eines Mischkopfes einer industriellen Mischmaschine mit einem Reinigungscontainer, wie vorbeschrieben, vor allem auch, dass ein solches Reinigen automatisiert vorgenommen werden kann. Auch das Anschließen des Reinigungscontainers an den Mischbehälter kann selbsttätig und damit automatisiert vorgenommen werden kann. Der Reinigungscontainer ist in einem solchen Fall typischerweise gelenkig an das Gestell der Mischmaschine angeschlossen und wird bei einem Wechsel von zu mischendem Mischgut zum Durchführen des Reinigungsprozesses an den Mischkopf angeschlossen und nach Beendigen des Reinigungsprozesses von diesem wieder entfernt, sodass dann unverzüglich der nächste Mischcontainer an den Mischkopf zum Durchführen eines weiteren Mischvorganges angeschlossen werden kann. Es versteht sich, dass mit einem solchen Reinigungscontainer die zum Reinigen des Mischkopfes notwendigen Stillstandszeiten der Mischmaschine erheblich reduziert sind. It is advantageous in cleaning a mixing head of an industrial mixing machine with a cleaning container, as described above, above all, that such cleaning can be made automated. Also, the connection of the cleaning container to the mixing container can be made automatically and thus automatically. The cleaning container is typically in such a case hingedly connected to the frame of the mixing machine and is connected at a change of mixed material for performing the cleaning process to the mixing head and removed after completing the cleaning process of this again, so then immediately the next mixing container are connected to the mixing head to perform another mixing process can. It is understood that with such a cleaning container necessary for cleaning the mixing head downtime of the mixing machine are significantly reduced.
Durchaus möglich ist für den Prozess des Reinigens eines Mischkopfes auch, wenn entweder nacheinander oder zusammen mit Trockeneis als Strahlmittel ein für die Entfernung von an der Innenwand des Mischkopfes und/oder den Werkzeugen anhaftendem Mischgut geeignetes beständiges Strahlmittel eingesetzt wird. Dieses kann auch dergestalt vorgesehen sein, dass in einem ersten Strahlschritt ein beständiges Strahlmittel, beispielsweise Kunststoffpartikel und/oder Partikel aus Aluminium oder einer Aluminiumlegierung und in einem zweiten Strahlschritt das Strahlen mit Trockeneis und somit mit einem nichtbeständigen Strahlmittel durchgeführt wird. It is also entirely possible for the process of cleaning a mixing head if, either in succession or together with dry ice, a resistant blasting agent suitable for the removal of mixing material adhering to the inner wall of the mixing head and / or the tools is used as blasting agent. This can also be provided in such a way that in a first jet step, a resistant blasting agent, for example plastic particles and / or particles of aluminum or an aluminum alloy and in a second blasting step the blasting with dry ice and thus with a non-resistant blasting agent is performed.
Nachfolgend ist die Erfindung anhand eines Ausführungsbeispiels unter Bezugnahme auf die beigefügten Figuren beschrieben. Es zeigen: The invention is described below with reference to an embodiment with reference to the accompanying figures. Show it:
Fig. 1 : eine schematisierte, perspektivische Ansicht einer industriellen Fig. 1: a schematic, perspective view of an industrial
Mischmaschine mit einem an den Mischkopf angeschlossenen, ein Mischgut enthaltenden Behälter in der Mischstellung des Misch kopfes,  Mixing machine with a container connected to the mixing head, a mixture-containing container in the mixing position of the mixing head,
Fig. 2: in einer schematisierten Längsschnittdarstellung den Mischkopf in seiner Andockstellung zusammen mit einem Reinigungscontainer vor dem Andocken an den Mischkopf und 2 shows a schematic longitudinal section of the mixing head in its docking position together with a cleaning container before docking to the mixing head and
Fig. 3: eine schematisierte Darstellung entsprechend derjenigen der 3 is a schematic representation corresponding to that of
Figur 2 mit dem an den Misch köpf angedockten Reinigungscontainer während des Prozesses des Durchführens einer Reinigung der Innenseite des Mischkopfes. Eine Mischmaschine 1 für industrielle Zwecke verfügt über ein Gestell 2, an dem schwenkbar ein Mischkopf 3 gelagert ist. Die Schwenkachse des Mischkopfes 3 ist mit dem Bezugszeichen S kenntlich gemacht. Über einen Antrieb 4 ist der Mischkopf 3 um seine Schwenkachse zumindest um 180° verschwenkbar. Bei dem in Figur 1 dargestellten Ausführungsbeispiel dient die Schwenkbarkeit des Mischkopfes 3 dem Zweck, dass in seiner gegenüber der Darstellung in Figur 1 um 180° gedrehten Stellung ein Mischgutcontainer 5 an den Mischkopf angeschlossen werden kann, um nach Anschluss desselben an den Mischkopf 3 dann die aus dem Mischgutcontainer 5 und Mischkopf 3 gebildete Einheit in die in Figur 1 gezeigte Mischstellung des Mischkopfes 3 verschwenken zu können. Bei dem Vorgang des Mischens kann, wenn gewünscht, die vorbeschriebene Einheit um die Schwenkachse S pendelnd geschwenkt werden. Zum Anschließen des Mischgutcontainers 5 an den Mischkopf 3 verfügt der Mischkopf 3 über einen radial nach außen abragenden umlaufenden Verbindungsflansch. Der Mischcontainer 5 verfügt über einen komplementären Verbindungsflansch. Beide Flansche werden unter Zwischenschaltung einer Dichtung zum Herstellen der Einheit aus Mischkopf 3 und Mischcontainer 5 durch an sich bekannte Mittel zusammengehalten, beispielsweise mittels eines Kolben-Zylinder-Aktors. FIG. 2 with the cleaning container docked to the mixing head during the process of carrying out a cleaning of the inside of the mixing head. A mixing machine 1 for industrial purposes has a frame 2, on which a mixing head 3 is pivotally mounted. The pivot axis of the mixing head 3 is identified by the reference symbol S. About a drive 4, the mixing head 3 is pivotable about its pivot axis at least 180 °. In the embodiment shown in Figure 1, the pivoting of the mixing head 3 serves the purpose that in its relation to the illustration in Figure 1 rotated by 180 ° position a Mischgutcontainer 5 can be connected to the mixing head to after connecting the same to the mixing head 3 then the From the mixing container 5 and mixing head 3 formed unit in the mixing position shown in Figure 1 of the mixing head 3 to pivot. In the process of mixing, if desired, the above-described unit can be pivoted about the pivot axis S. For connecting the mixed goods container 5 to the mixing head 3, the mixing head 3 has a circumferential connecting flange projecting radially outwards. The mixing container 5 has a complementary connecting flange. Both flanges are held together with the interposition of a seal for producing the unit from mixing head 3 and mixing container 5 by means known per se, for example by means of a piston-cylinder actuator.
In dem Mischkopf 3 des dargestellten Ausführungsbeispiels sind zwei Mischwerkzeuge angeordnet, die jeweils durch einen Elektromotor angetrieben sind. Ein erster Elektromotor 6 dient zum Antreiben eines ersten Mischwerkzeuges, ein zweiter Elektromotor 7 dient zum Antreiben des zweiten Mischwerkzeuges. In the mixing head 3 of the illustrated embodiment, two mixing tools are arranged, which are each driven by an electric motor. A first electric motor 6 serves to drive a first mixing tool, a second electric motor 7 serves to drive the second mixing tool.
Für die Zwecke der Beschreibung der Erfindung ist die Anzahl der in dem Mischkopf 3 angetriebenen Mischwerkzeuge jedoch ohne Relevanz. For the purposes of the description of the invention, however, the number of mixing tools driven in the mixing head 3 is of no relevance.
Nach Vollenden des Mischvorganges wird die aus dem Mischcontainer und dem Mischkopf 3 bestehende Einheit wieder in ihre Ausgangsstellung zurückverschwenkt, in der der Mischcontainer 5 mit dem gemischten Mischgut bodenseitig aufsteht und von dem Mischkopf 3 getrennt und weggefahren werden kann. Figur 2 zeigt in einer vereinfachten Darstellung den Mischkopf 3 der Mischmaschine 1 mit lediglich einem seiner Mischwerkzeuge, welches in der Figur 2 nur schematisiert wiedergegeben ist. Das Mischwerkzeug ist in der Figur 2 mit dem Bezugszeichen 8 kenntlich gemacht. In der in Figur 2 gezeigten Stellung befindet sich der Mischkopf 3 in seiner Andockstellung, damit an diesen ein Mischcontainer 5 angeschlossen werden kann. Soll mit dem Mischkopf 3 nach dem Mischen eines ersten Mischgutes in einem nachfolgenden Mischvorgang ein anderes Mischgut gemischt werden, ist es erforderlich, den Mischkopf 3 von darin verbliebenen Resten des zuvor darin gemischten Mischgutes zu befreien. Diese können als Staubpartikel an der inneren Oberfläche des Mischkopfes 3 anhaften. Zum Teil können auch an der Innenwand 9 Mischgutanbackungen vorliegen. Zum Reinigen des Mischkopfes 3 dient ein Reinigungscontainer 10. Der Reinigungscontainer 10 umfasst ein Reinigungsbehältnis 1 1 , welches bei dem dargestellten Ausführungsbeispiel eine ähnliche Form aufweist, wie ein Mischcontainer 5. Somit verfügt der Reinigungscontainer 10 über eine oberseitige Öffnung, deren Geometrie der unterseitigen Öffnung des Mischkopfes 3 entspricht. An die Außenseite ist ein Verbindungsflansch angebracht. Der Reinigungscontainer 10 des dargestellten Ausführungsbeispiels ist in nicht näher dargestellter Weise an dem Gestell 2 der Mischmaschine 1 angeordnet und kann in seine zum Anschließen an den Mischkopf 3 in Figur 2 gezeigte Andockstellung mittels eines Schwenkaktors gebracht werden. Innerhalb des Reinigungsbehältnisses 1 1 des Reinigungscontainers 10 ist ein Schleuderrad 12 einer im Übrigen nicht näher dargestellten Schleuderstrahleinrichtung angeordnet. Das Schleuderrad 12 ist, wie in Figur 2 durch die Pfeile angedeutet, in vertikaler Richtung sowie um die Schwenkachse 13 verstellbar. Das Schleuderrad 12 ist ebenfalls um eine orthogonal zur Schwenkachse 13 verlaufende Schwenkachse 13.1 verschwenkbar. Das Schleuderrad 12 dient zum Schleuderstrahlen der Innenseite des Mischkopfes 3. Die Zuführung des Strahlmittels ist der Einfachheit halber in Figur 2 nicht dargestellt. Die Strahlmittelzuführeinrichtung kann innerhalb des Reinigungsbehältnisses 1 1 sein. Durch die Einrichtbarkeit des Schleuderrades 12, insbesondere seine Verschwenkbarkeit um die Schwenkachse 13, kann der zu der Innenseite des Mischkopfes 3 gerichtete Wurffächer über die gesamte innere Oberfläche des Mischkopfes 3 verschwenkt werden, sodass sukzessive die gesamte Oberfläche reini- gungsgestrahlt werden kann. Durch die vertikale Einrichtbarkeit des Schleuderrades 12 kann die Öffnungsweite des Wurffächers des Strahlmittels eingerichtet werden. After completion of the mixing process consisting of the mixing container and the mixing head 3 unit is zurückverschwenkt back to its original position in which the mixing container 5 rises with the mixed mix bottom side and separated from the mixing head 3 and can be moved away. FIG. 2 shows, in a simplified representation, the mixing head 3 of the mixing machine 1 with only one of its mixing tools, which is shown only schematically in FIG. The mixing tool is indicated in the figure 2 by the reference numeral 8. In the position shown in Figure 2, the mixing head 3 is in its docking position, so that a mixing container 5 can be connected to this. If another mix is to be mixed with the mixing head 3 after the mixing of a first mix in a subsequent mixing operation, it is necessary to free the mixhead 3 from residues of the mix previously mixed therein. These can adhere to the inner surface of the mixing head 3 as dust particles. In some cases, mixed material caking can also be present on the inner wall 9. The cleaning container 10 comprises a cleaning container 1 1, which in the illustrated embodiment has a similar shape as a mixing container 5. Thus, the cleaning container 10 has a top opening whose geometry of the bottom opening of the Mixing head 3 corresponds. On the outside of a connecting flange is attached. The cleaning container 10 of the illustrated embodiment is arranged in a manner not shown on the frame 2 of the mixing machine 1 and can be brought into its docking position shown for connection to the mixing head 3 in Figure 2 by means of a Schwenkaktors. Within the cleaning container 1 1 of the cleaning container 10, a blast wheel 12 of a centrifugal blasting device, not otherwise shown, is arranged. The impeller 12 is, as indicated in Figure 2 by the arrows, in the vertical direction and about the pivot axis 13 adjustable. The spinner 12 is also pivotable about a pivot axis 13.1 orthogonal to the pivot axis 13. The blast wheel 12 is used for blasting the inside of the mixing head 3. The supply of the blasting agent is not shown in Figure 2 for the sake of simplicity. The Strahlmittelzuführeinrichtung can be within the cleaning container 1 1. Due to the adjustability of the impeller 12, in particular its pivotability about the pivot axis 13, the throwing fans directed towards the inside of the mixing head 3 can be pivoted over the entire inner surface of the mixing head 3, so that the entire surface can be successively cleaned by blasting. Due to the vertical adjustability of the centrifugal wheel 12, the opening width of the throwing fan of the blasting medium can be set up.
Bei dem dargestellten Ausführungsbeispiel wird als Strahlmittel zum Reinigen der inneren Oberfläche des Mischkopfes 3 einschließlich seines Werkzeuges 8 ein nicht beständiges Strahlmittel, und zwar in Form von Trockeneispellets, verwendet. In the illustrated embodiment is used as a blasting agent for cleaning the inner surface of the mixing head 3 including its tool 8, a non-resistant blasting agent, in the form of dry ice pellets.
Gereinigt wird die innere Oberfläche des Mischkopfes 3, wenn der Reinigungscontainer 10 an dem Mischkopf 3, wie in Figur 3 dargestellt, angeschlossen ist. Dann ist durch den Mischkopf 3 und den Reinigungscontainer 10 ein geschlossener Reinigungsbehälter bereitgestellt. Figur 3 zeigt schematisiert den auf die Innenwand 9 des Mischkopfes 3 gerichteten Wurffächer 14 aus Trockeneispellets, herausgeschleudert von dem Schleuderrad 12. Das Schleuderrad 12 wird während des Reinigungsvorganges um seine Schwenkachse 13 sukzessive verschwenkt, damit die gesamte innere Oberfläche des Mischkopfes in dem Bereich des Wurfstrahles 14 gelangt. Dabei erfolgt eine Verschwenkung gleichermaßen um beide Schwenkachsen 13, 13.1 . Durch das Trockeneisstrahlen wird zugleich das Mischwerkzeug 8 von daran anhaftendem Mischgut befreit. Um den Reinigungsprozess des Mischwerkzeuges 8 zu unterstützen, ist dieses in nicht näher dargestellter Art und Weise axial verstellbar, um mit seiner zu der Innenwand 9 weisenden Rückseite einen größeren Abstand zu der Innenwand 9 einnehmen zu können. In einer solchen Stellung ist der Reinigungseffekt besser. Zum Unterstützen des Reinigungsvorganges kann das Mischwerkzeug 8 langsam rotieren, um durch dieses ansonsten unter Umständen bezüglich des Trockeneispartikelbeschusses abgeschattete Innenwandbereiche zugänglich zu machen. The inner surface of the mixing head 3 is cleaned when the cleaning container 10 is connected to the mixing head 3, as shown in FIG. Then, a closed cleaning container is provided by the mixing head 3 and the cleaning container 10. FIG. 3 schematically shows the throwing fan 14 made of dry ice pellets directed onto the inner wall 9 of the mixing head 3, ejected from the centrifugal wheel 12. During the cleaning process, the centrifugal wheel 12 is successively pivoted about its pivot axis 13, so that the entire inner surface of the mixing head is in the area of the jet 14 arrived. In this case, a pivoting takes place equally about both pivot axes 13, 13.1. By dry ice blasting, the mixing tool 8 is at the same time freed from mixed material adhering thereto. In order to assist the cleaning process of the mixing tool 8, this is axially adjustable in a manner not shown in order to take a greater distance to the inner wall 9 with its pointing to the inner wall 9 back. In such a position, the cleaning effect is better. To assist in the cleaning process, the mixing tool 8 may rotate slowly to access the interior wall areas, which otherwise might be shaded with respect to dry ice particle bombardment.
Durchaus möglich ist das Reinigen der Innenwand 9 des Mischkopfes 3 auch mit einer in Bewegungsrichtung des Wurffächers 14 geneigten Ausrichtung desselben, sodass dieser winkelig auf die Innenwand 9 auftrifft. Diese Maßnahme kann den Ablöseeffekt unterstützen. Quite possible, the cleaning of the inner wall 9 of the mixing head 3 is also the same with an inclined in the direction of movement of the throwing fan 14 orientation, so that it impinges on the inner wall 9 at an angle. This measure can support the detachment effect.
Das Reinigungsbehältnis 1 1 ist an eine in den Figuren nicht dargestellte Absaugung angeschlossen. Das Absaugrohr, durch das das Mischbehält- nis 1 1 mit der Absaugung verbunden ist, ist mit dem Bezugszeichen 15 kenntlich gemacht. Über das Absaugrohr 15 und die Absaugung wird das durch die Sublimation des Trockeneises an der Innenwand 9 des Mischkopfes 3 entstehende Gas und die im Zuge des Trockeneisstrahlens von der Oberfläche abgenommenen Mischgutreste aus dem Reinigungscontainer 10 abgeführt. Aufgrund der an der Innenwand 9 infolge der Trockeneisbestrahlung stattfindenden Sublimation und der damit einhergehenden extremen Volumenzunahme streicht ein Gasstrom entlang der Innenwand 9 des Mischkopfes 3 in den Reinigungscontainer 10 hinein und zu dem Absaugrohr 15 hin. Abgezogen werden über das Absaugrohr 15 somit das aus dem Trockeneis sublimierte Gas - CO2 - und die mit dem Gasstrom transportierten und von der Oberfläche des Mischkopfes 3 entfernten Mischgutpartikel. The cleaning container 1 1 is connected to a suction, not shown in the figures. The suction tube, through which the mixing container nis 1 1 is connected to the suction is indicated by the reference numeral 15. About the suction pipe 15 and the suction resulting from the sublimation of the dry ice on the inner wall 9 of the mixing head 3 and the gas removed in the course of dry ice blasting from the surface Mischgutreste is removed from the cleaning container 10. Due to the taking place on the inner wall 9 as a result of the dry ice irradiation sublimation and the consequent extreme increase in volume sweeps a gas flow along the inner wall 9 of the mixing head 3 in the cleaning container 10 into and to the suction pipe 15 out. Extracted via the suction tube 15 thus sublimated from the dry ice gas - CO2 - and transported with the gas stream and the surface of the mixing head 3 Mischgutpartikel distant.
Ist der Prozess des Trockeneisstrahlens beendet, wird vor dem Abkoppeln des Reinigungscontainers 10 von dem Mischkopf 3 über eine Zuleitung 16 Spülluft in den aus Reinigungscontainer 10 und Mischkopf 3 gebildeten Reinigungsbehälter eingebracht und über die Absaugung abgezogen. Hierbei kann es sich beispielsweise um erwärmte Luft handeln, um unter Umständen in dem Reinigungsbehälter vorhandene kondensierte Feuchtigkeit zu entfernen. Auf diese Weise werden unter Umständen noch vorhandene Reinigungsreste aus dem Mischkopf 3 und dem Reinigungscontainer 10 entfernt. Anschließend wird der Reinigungscontainer 10 von dem Mischkopf 3 getrennt und wieder in seine Nicht-Benutzungs-Stellung am Gestell 2 der Mischmaschine 1 verschwenkt. Dann kann an dem Mischkopf 3 unverzüglich der nächste Mischcontainer mit darin befindlichem Mischgut angeschlossen und zum Zwecke einer Mischung des Mischgutes benutzt werden. If the process of dry ice blasting is completed, before the uncoupling of the cleaning container 10 from the mixing head 3 via a supply line 16 scavenging air is introduced into the cleaning container 10 and mixing head 3 formed cleaning container and withdrawn through the suction. This may be, for example, heated air in order to remove any condensed moisture present in the cleaning container. In this way, possibly existing cleaning residues from the mixing head 3 and the cleaning container 10 are removed. Subsequently, the cleaning container 10 is separated from the mixing head 3 and pivoted back to its non-use position on the frame 2 of the mixing machine 1. Then, at the mixing head 3, the next mixing container with mixing material located therein can be immediately connected and used for the purpose of mixing the mixed material.
In dem in den Figuren dargestellten Ausführungsbeispiel ist in dem Reinigungscontainer 10 ein Schleuderrad 12 angeordnet. Durchaus möglich ist auch eine Ausgestaltung, bei der in dem Reinigungscontainer mehrere Schleuderräder an unterschiedlichen Positionen darin angeordnet sind. Diese sind gemäß einer Ausgestaltung an eine gemeinsame Schleudermittelzuführung angeschlossen. In the embodiment shown in the figures, a blast wheel 12 is arranged in the cleaning container 10. Quite possible is also an embodiment in which a plurality of centrifugal wheels are arranged at different positions therein in the cleaning container. These are connected according to an embodiment of a common Schleudermittelzuführung.
Die Antriebswelle des Werkzeuges 8 ist über eine in den Figuren nicht dargestellte Wellenabdichtung in das Innere des Mischkopfes 3 hineingeführt. In einem Ausführungsbeispiel ist vorgesehen, die Wellenabdichtung zu temperieren, damit diese bei einem Reinigen des Mischkopfes mit Trockeneis nicht versprödet und beschädigt oder gar zerstört werden kann. Bei einem solchen Temperieren wird die Wellenabdichtung auf einer entsprechenden Temperatur gehalten, beispielsweise auf einer Temperatur oberhalb von 10°C. The drive shaft of the tool 8 is not over in the figures Shaft seal shown led into the interior of the mixing head 3. In one embodiment, it is provided to temper the shaft seal so that it can not be embrittled and damaged during a cleaning of the mixing head with dry ice or even destroyed. With such tempering, the shaft seal is maintained at a suitable temperature, for example at a temperature above 10 ° C.
Die Erfindung ist anhand der Figuren im Rahmen eines Ausführungsbeispiels beschrieben worden. Ohne den Umfang der geltenden Ansprüche zu verlassen, ergeben sich für einen Fachmann zahlreiche weitere Ausgestaltungen, die Erfindung umsetzen zu können, ohne dass dieses im Einzelnen ausgeführt werden müsste. The invention has been described with reference to the figures in the context of an embodiment. Without departing from the scope of the applicable claims, numerous further embodiments for a person skilled in the art will be able to implement the invention without this having to be carried out in detail.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
1 Mischmaschine 1 mixing machine
2 Gestell  2 frame
3 Misch köpf  3 mixed heads
4 Antrieb  4 drive
5 Mischgutcontainer  5 mixed goods containers
6 Elektromotor  6 electric motor
7 Elektromotor  7 electric motor
8 Mischwerkzeug  8 mixing tool
9 Innenwand 9 inner wall
0 Reinigungscontainer0 cleaning container
1 Reinigungsbehältnis1 cleaning container
2 Schleuderrad2 blast wheel
1 Schwenkachse1 pivot axis
4 Wurffächer4 sausage fans
5 Absaugrohr5 suction tube
6 Zuleitung 6 supply line
S Schwenkachse  S pivot axis

Claims

Patentansprüche claims
Reinigungscontainer zum Reinigen eines Mischkopfes (3) einer industriellen Mischmaschine (1 ), welcher Reinigungscontainer (10) ein Reinigungsbehältnis (1 1 ) mit einer Öffnung und mit Anschlussmittel zum Anschließen desselben an den Mischkopf einer industriellen Mischmaschine (1 ) umfasst, wobei Reinigungsbehältnis (1 1 ) ausgelegt ist, damit dieses zusammen mit dem Mischkopf (3), wenn mit seiner Öffnung zu diesem weisend, an diesen angeschlossen, einen geschlossenen Reinigungsraum bildet, wobei in dem Reinigungsbehältnis (1 1 ) des Reinigungscontainers (10) ein Schleuderrad (12) einer Schleuderstrahleinrichtung mit einer zu der inneren Oberfläche des Mischkopfes (3) gerichteten Wurfrichtung zum Schleuderstrahlen der inneren Oberfläche des Mischkopfes (3) angeordnet ist. Cleaning container for cleaning a mixing head (3) of an industrial mixing machine (1), which cleaning container (10) comprises a cleaning container (1 1) with an opening and with connecting means for connecting the same to the mixing head of an industrial mixing machine (1), wherein cleaning container (1 1) is designed so that this, together with the mixing head (3), with its opening pointing to this, connected to this, forms a closed cleaning space, wherein in the cleaning container (1 1) of the cleaning container (10) has a blast wheel (12) a centrifugal blasting device is arranged with a throwing direction directed towards the inner surface of the mixing head (3) for blasting the inner surface of the mixing head (3).
Reinigungscontainer nach Anspruch 1 , dadurch gekennzeichnet, dass die Schleuderstrahlvorrichtung eine Strahlgutzuführung zum Zuführen von gegenüber der inneren Oberfläche des Mischkopfes weichem Strahlgut, etwa Kunststoffpartikel und/oder Partikel aus Aluminium oder einer Aluminiumlegierung zugeordnet ist. Cleaning container according to claim 1, characterized in that the centrifugal blasting device is associated with a blasting material supply for supplying to the inner surface of the mixing head soft blasting material, such as plastic particles and / or particles of aluminum or an aluminum alloy.
Reinigungscontainer nach Anspruch 1 , dadurch gekennzeichnet, dass die Schleuderstrahlvorrichtung eine Strahlgutzuführung zum Zuführen von unter Umgebungsbedingungen nicht beständigem Strahlmittel zugeordnet ist. Cleaning container according to claim 1, characterized in that the centrifugal blasting device is associated with a blasting material supply for supplying blasting medium which is not stable under ambient conditions.
Reinigungscontainer nach Anspruch 3, dadurch gekennzeichnet, dass das nicht beständige Strahlmittel Trockeneispartikel, insbesondere in Pelletform sind. Cleaning container according to claim 3, characterized in that the non-resistant blasting agent are dry ice particles, in particular in pellet form.
Reinigungscontainer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das im Reinigungscontainer (10) angeordnete Schleuderrad (12) der Schleuderstrahleinrichtung bezüglich der Wurfrichtung des Strahlmittels einrichtbar ist. Cleaning container according to one of claims 1 to 4, characterized in that in the cleaning container (10) arranged blast wheel (12) of the centrifugal blasting device with respect to the throwing direction of the blasting agent can be set.
6. Reinigungscontainer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Abstand des Schleuderrades (12) von dem Mischkopf (3) innerhalb des Reinigungsbehältnisses (1 1 ) des Reinigungscontainers (10) einrichtbar ist. 6. cleaning container according to one of claims 1 to 5, characterized in that the distance of the centrifugal wheel (12) of the mixing head (3) within the cleaning container (1 1) of the cleaning container (10) can be set.
7. Reinigungscontainer nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass in dem Reinigungscontainer mehrere Schleuderräder, vorzugsweise in unterschiedlichen Positionen und unterschiedlichen Wurfrichtungen des von diesen abgegebenen Strahlmittels angeordnet sind. 7. Cleaning container according to one of claims 1 to 6, characterized in that in the cleaning container a plurality of impellers, preferably arranged in different positions and different throwing directions of the emitted from these blasting agent.
8. Reinigungscontainer nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass an das Reinigungsbehältnis (1 1 ) des Reinigungscontainers (10) eine Absaugung angeschlossen ist. 8. Cleaning container according to one of claims 1 to 7, characterized in that on the cleaning container (1 1) of the cleaning container (10) is connected to a suction.
9. Reinigungscontainer nach Anspruch 8, dadurch gekennzeichnet, dass die Absaugung an der von dem Mischkopf (3) abgewandten Seite des Schleuderrades (12) in das Reinigungsbehältnisinnere mündet. 9. cleaning container according to claim 8, characterized in that the suction at the side facing away from the mixing head (3) side of the centrifugal wheel (12) opens into the cleaning container inside.
10. Reinigungscontainer nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass in das Reinigungsbehältnis (1 1 ) des Reinigungscontainers (10) eine Spülleitung zum Einbringen eines gasförmigen Spülfluides in den Reinigungscontainer (10) mündet. 10. cleaning container according to claim 8 or 9, characterized in that in the cleaning container (1 1) of the cleaning container (10) opens a flushing line for introducing a gaseous flushing fluid into the cleaning container (10).
11. Reinigungscontainer nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Antriebswelle des zumindest einen Werkzeuges (8) mit einer Wellenabdichtung im bzw. am Mischkopf 3 gelagert und die Wellenabdichtung beheizt ist. 11. Cleaning container according to one of claims 1 to 10, characterized in that the drive shaft of the at least one tool (8) mounted with a shaft seal in or on the mixing head 3 and the shaft seal is heated.
12. Anordnung mit einer Mischmaschine, umfassend einen Mischkopf, ausgestattet mit Mitteln zum Anschließen desselben an ein ein Mischgut beinhaltendes Behältnis (5), welcher Mischkopf (3) schwenkbar gegenüber einem Gestell dergestalt gelagert ist, dass der aus Mischbehältnis (5) und Mischkopf (3) gebildete Mischbehälter zum Durchführen eines Mischprozesses schwenkbar ist, und wenigstens ein rotatorisch angetriebenes Mischwerkzeug (8) auf- weist, und mit einem Reinigungscontainer (10) nach einem der Ansprüche 1 bis 1 1 , dadurch gekennzeichnet, dass das wenigstens eine in dem Mischkopf angeordnete Mischwerkzeug (8) in axialer Richtung zur Vergrößerung seines Abstandes von der Innenwand des Mischkopfes (3) für die Zwecke einer Reinigung des Mischkopfes (3) verstellbar ist. 12. Arrangement with a mixing machine, comprising a mixing head, equipped with means for connecting it to a mixture containing a container (5), which mixing head (3) is pivotally mounted relative to a frame in such a way that the mixing container (5) and mixing head ( 3) for performing a mixing process is pivotable, and at least one rotationally driven mixing tool (8) has, and with a cleaning container (10) according to one of claims 1 to 1 1, characterized in that the at least one arranged in the mixing head mixing tool (8) in the axial direction to increase its distance from the inner wall of the mixing head (3) for the Purposes of cleaning the mixing head (3) is adjustable.
Anordnung nach Anspruch 12, dadurch gekennzeichnet, dass der Reinigungscontainer (10) gelenkig an das Gestell (2) der Mischmaschine (1 ) zum Anschließen desselben an den Mischkopf (3) und zum Entfernen desselben von dem Mischkopf (3) angeschlossen ist und wobei zur Verstellung des Reinigungscontainers (10) ein oder mehrere Aktoren vorgesehen sind. Arrangement according to claim 12, characterized in that the cleaning container (10) is pivotally connected to the frame (2) of the mixing machine (1) for connecting it to the mixing head (3) and for removing it from the mixing head (3) and wherein Adjustment of the cleaning container (10) one or more actuators are provided.
PCT/EP2018/060762 2017-04-26 2018-04-26 Cleaning container for cleaning the mixing head of a mixing machine, and arrangement with a mixing machine and with a cleaning container of this kind WO2018197627A1 (en)

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DE202017102472.5 2017-04-26

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