EP3317006B1 - Dispersion tool, dispersion device and dispersion assembly - Google Patents

Description

The invention relates to a dispersing tool with a shaft tube and a rotor shaft rotatably mounted in the shaft tube, a dispersing rotor at least partially surrounded by the shaft tube, which can be driven with the help of the rotor shaft and is arranged at a free end of the dispersing tool facing away from a drive in the position of use.

Furthermore, the invention also relates to a dispersing device with a drive unit having a drive and with a dispersing tool as well as a dispersing arrangement with a dispersing device and with at least two exchangeable dispersing tools.

For example, the document discloses WO 03/086598 A1 a dispersing tool with the features of the preamble of claim 1. From the document US 2012/0018552 A1 a tool for a hand blender is previously known which has a rotor shaft which is axially displaceable within a shaft tube and has a blade at its free end. The rotor shaft can be moved within the shaft tube between a cleaning position protruding from the shaft tube and a retracted working position.

Such dispersing tools, dispersing devices and also dispersing arrangements are known in various embodiments from the prior art. Since the dispersing tools come into contact with a medium to be dispersed when they are used, it is generally necessary to clean the dispersing tools from time to time. For cleaning, the dispersing tools known from the prior art generally have to be broken down into their individual components so that they can be cleaned with the necessary care.

The object of the invention is to provide a dispersing tool and a dispersing device of the above to create mentioned type, in which the cleaning of the dispersing tool is simplified.

This object is achieved in the dispersing tool defined at the outset by the means and features of claim 1 and in that the dispersing rotor is arranged axially displaceably on the dispersing tool between a working position located in the shaft tube and a cleaning position located outside the shaft tube. In this way it is possible to axially move the dispersing rotor from its working position located in the shaft tube to its cleaning position located outside the shaft tube when the dispersing tool and in particular the dispersing rotor are to be cleaned. Thus, a dispersing tool is created that can be cleaned without being dismantled.

In an advantageous embodiment of the dispersing tool according to the invention, it can be provided that the dispersing tool has a cleaning stop that defines the cleaning position of the dispersing rotor. This can make it easier to move the dispersion rotor into the cleaning position.

It can be particularly advantageous if the dispersing rotor is axially displaceable, in particular axially displaceable, within the shaft tube between a work stop defining the working position of the dispersing rotor and a cleaning stop, for example the aforementioned cleaning stop, defining the cleaning position of the dispersing rotor. In this way, the dispersion rotor can be moved reliably from its working position to the cleaning position and vice versa.

As an alternative or in addition to this, it can also be provided that the rotor shaft is axially displaceable, in particular axially displaceable, within the shaft tube between a work stop defining the working position of the dispersing rotor and a cleaning stop, for example the aforementioned cleaning stop, defining the cleaning position of the dispersing rotor. This is particularly advantageous if the dispersing rotor, as is usually the case, is connected in one piece to the rotor shaft. In addition, a part of the rotor shaft that may come into contact with the medium to be dispersed can also be cleaned in a particularly simple manner.

With the aid of the previously described work stop and the counter stop, it can also be prevented that the rotor shaft and / or the dispersing rotor unintentionally slip out of the shaft tube.

The dispersing rotor and / or the rotor shaft are rotatably mounted in the shaft tube of the dispersing tool by means of a radial bearing, in particular by means of a radial sliding bearing. In this way, the necessary speeds of the dispersing rotor or the rotor shaft can be achieved without excessive heat development or even vibration occurring.

A distance between the working position and the cleaning position and / or an axial advance of the dispersing rotor and / or the rotor shaft from the working position into the cleaning position are at least as large as an axial dimension of the radial bearing. This can be used to ensure that the Radial bearing of the dispersing tool is pushed apart or dismantled when adjusting the dispersing rotor or the rotor shaft from the working position into the cleaning position. It is thus possible to also clean the radial bearing and to reliably remove residues of medium that may have stuck in the radial bearing.

According to the invention, when the dispersing rotor is moved into the cleaning position, there is a flushing gap between an inner bearing surface of the radial bearing and an outer bearing surface of the radial bearing and / or an inner surface of the shaft tube. This flushing gap can additionally simplify the cleaning of the dispersing tool and in particular of the radial bearing and also of the dispersing rotor.

In this context, it can also be advantageous if the dispersing tool has a flushing opening through which, for example, a flushing liquid can be introduced from the outside into the area of the radial bearing and in particular into the area of the flushing gap, so that the dispersing tool can be cleaned even more easily.

To define the cleaning position of the dispersing rotor or the rotor shaft, it can be useful if a cleaning stop, for example the previously mentioned, is formed inside the shaft tube and if the rotor shaft has a shaft shoulder designed to match the cleaning stop. In this case, an inside diameter of the shaft tube limited by the cleaning stop can be smaller than an outside diameter of the shaft shoulder. Additionally or alternatively, it can also be provided that a distance between the dispersing rotor and one, for example the aforementioned, shaft shoulder of the rotor shaft is at least as large as, preferably greater than, a distance between the free end of the shaft tube and one, for example the already The aforementioned cleaning stop is at least when this cleaning stop is in a position in which the dispersing rotor is displaced into the cleaning position. In this way it is possible to move the dispersing rotor from its working position into its cleaning position to such an extent that it protrudes completely from the free end of the shaft tube and can thus be cleaned particularly easily.

In other words, this means that the distance between the cleaning position and the working position of the rotor is at least as large as an axial dimension of the dispersing rotor, in particular if this is arranged flush with the free end of the shaft tube in the free end of the shaft tube.

In order to be able to move the dispersing rotor from its working position into the cleaning position, it can be useful if the dispersing tool has an actuating element which is arranged on an outside of the shaft tube and which is connected to the dispersing rotor and / or to the rotor shaft in such a way that the dispersing rotor and / or the rotor shaft is displaceable between the working position and the cleaning position by means of the actuating element. The dispersing rotor and / or the rotor shaft can thus be moved back and forth between the working position and the cleaning position without the use of tools.

Furthermore, it can be provided that a cleaning stop, for example the previously mentioned, defining the cleaning position of the dispersing rotor, is formed on the actuating element. The actuating element can thus assume a double function and not only effect an adjustment of the dispersing rotor into the cleaning position, but also limit the adjustment path of the dispersing rotor.

In one embodiment of the dispersing tool, it can be provided that the previously described actuating element comprises a slide guided in an elongated hole which is arranged in the shaft tube and extends in the axial direction. The slide can have a pin reaching through the elongated hole into the shaft tube. This pin can engage behind at least one pin shaft shoulder of the rotor shaft for adjusting the dispersing rotor between the working position and the cleaning position in at least one direction of movement of the dispersing rotor and / or the rotor shaft.

An expedient embodiment of the dispersing tool according to the invention can provide that the actuating element has a magnetic coupling element. This magnetic coupling element can be set up to magnetically connect the actuating element to the dispersing rotor and / or to the rotor shaft of the dispersing tool, in particular to magnetically couple it. In the connected or coupled state, the dispersing rotor and / or the rotor shaft can thus be moved between the working position and the cleaning position when the actuating element is moved. In this way, a dispersing tool with an actuating element is created in which the actuating element and the dispersing rotor and / or the rotor shaft are connected without contact, that is to say magnetically coupled are. This can be of advantage, especially with regard to cleaning or general preparation of the dispersing tool, since joints, undercuts or the like that are difficult to clean can be avoided with a contactless coupling between the actuating element and the dispersing rotor to be adjusted and / or the rotor shaft.

In order to be able to provide the magnetic coupling between the actuating element and the dispersing rotor and / or the rotor shaft, it can be expedient if the magnetic coupling element has or comprises at least one magnet. This magnet can be a permanent magnet and / or an electromagnet. In principle, it is also conceivable that the magnetic coupling element comprises both a permanent magnet and an electromagnet. In this context it can also be advantageous if the dispersing rotor and / or the rotor shaft has / have a counter-coupling element. The magnet of the coupling element can then be magnetically coupled to this counter-coupling element. It should be noted that the counter-coupling element can generally be a region of the dispersing rotor and / or the rotor shaft which, due to their material, are set up for magnetic interactions with the at least one magnet of the coupling element. For example, the counter-coupling element can be made from a magnetic material, in particular from a ferromagnetic metal, which itself generates a magnetic field or can be magnetically attracted by the magnet of the coupling element.

When the actuating element is between a first, the working position of the dispersing rotor associated latching point and a second latching point on the shaft tube assigned to the cleaning position of the dispersing rotor is displaceable, in particular in the longitudinal direction of the shaft tube, the actuating element and thus also the dispersing rotor can be held lockable by engaging the actuating element in the respective latching points both in the cleaning position and in the working position.

It can be useful if an axial dimension of the elongated hole is at least as large as a distance between the working position and the cleaning position of the dispersing rotor.

In addition, it can be useful if the dispersing tool has a coupling for detachable connection to a drive unit of a dispersing device and / or for transmitting torque from a drive unit to the rotor shaft at a drive-side end facing a drive unit in the use position. This coupling can be designed to match a mating coupling formed on the drive unit in order to be able to interact with it. The coupling is preferably arranged on the rotor shaft.

In a particularly advantageous embodiment of the dispersing tool, it can also be provided that the rotor shaft of the dispersing tool is magnetic and / or ferromagnetic at its drive-side end facing away from the dispersing rotor. For this purpose, the rotor shaft can consist of a ferromagnetic material, for example of ferromagnetic stainless steel, at its drive-side end, or it can have a covering made of a ferromagnetic material. In this way it is possible that the rotor shaft is in the position of use can be magnetically connected to a drive unit, in particular to an output shaft of a drive unit. Axial forces acting on the rotor shaft can be absorbed via the magnetic coupling of the rotor shaft with the drive unit or with the output shaft of the drive unit, which usually have to be derived from axial bearings in the dispersing tools known from the prior art. In this way, a dispersion tool can be created in which an axial bearing of the rotor shaft by means of a separate axial bearing is not necessary.

In order to be able to monitor parameters of the medium to be dispersed, it can also be expedient if at least one sensor, in particular a temperature sensor and / or a pH-value sensor and / or on the dispersing tool, preferably on or adjacent to the free end of the shaft tube or a pressure sensor is arranged.

If the dispersing tool has a transponder on which data specific to the dispersing tool, for example operating data of the dispersing tool, and / or data received from one, for example the aforementioned, at least one sensor of the dispersing tool and / or from a transmitter-receiver unit to the transponder sent data are storable and / or stored, the dispersing tool can for example be blocked for further use after a certain operating time.

Furthermore, it is possible in this way, for example, to store a maximum speed permissible for the dispersing tool on the transponder, which is then sent as a drive unit that can read out this stored data maximum permissible speed with which it then drives the dispersing tool is taken into account.

The transponder can preferably be a writable transponder. As a rule, such transponders are RFID chips that have a data memory.

In a further embodiment of the dispersing tool of particular importance, it can also be provided that a sensor, for example the at least one already mentioned, can be connected to a drive unit of a dispersing device for the transmission of measurement data and / or, in particular in a wired manner, to one, for example the one already mentioned above mentioned, transponder of the dispersing tool is connectable or connected. The transponder can have evaluation electronics for processing measurement data received from the at least one sensor and can itself be set up for wireless transmission of measurement data to a drive unit of a dispersing device, in particular to a transmitter / receiver unit of such a dispersing device. In this way it is possible to wirelessly transmit data stored on the transponder of the dispersing tool to a drive unit and thus, for example, to control or regulate a dispersing process as a function of this data.

The transmitted data can, for example, be data specific to the dispersing tool or also data that have been recorded by the at least one sensor of the dispersing tool, that is to say essentially relate to parameters of the medium to be dispersed.

Furthermore, it can be provided that the dispersing tool or at least one element of the dispersing tool which comes into contact with the medium to be dispersed when the dispersing tool is used has an anti-stick coating. Such non-stick coatings are also referred to as easy-to-clean coatings. Non-stick coatings permit particularly simple cleaning of the dispersing tool or at least the elements of the dispersing tool which come into contact with the medium to be dispersed when the dispersing tool is used. This is because any dirt particles adhere less well to the elements or parts of the dispersing tool coated in this way and are therefore easier to remove and can usually be washed off. In particular, non-stick coatings can be used that reduce a surface energy of the coated element or of the dispersing tool and in this way help to avoid adhesions. Coatings suitable for this can consist of carbon, amorphous carbon, diamond-like carbon, diamond-like carbon (DLC) and / or diamond. In particular, if elements of the dispersing tool that are made of metal are provided with coatings made of carbon or amorphous carbon or diamond-like carbon or DLC or diamond, this can on the one hand simplify cleaning of the coated parts and on the other hand provide greater stability the coated elements of the dispersing tool.

To increase the stability of the dispersing tool or certain elements thereof, coatings can be used that have a greater hardness than uncoated stainless steel. Suitable coatings can be made of carbon, amorphous carbon, or diamond-like Carbon, diamond-like carbon (DLC) and / or diamond. Coatings with over 1000 HV (hardness according to Vickers) are particularly suitable for this. The aforementioned coatings can also lead to a higher chemical resistance of the coated elements or components of the dispersing tool. It can be particularly advantageous to provide the dispersing rotor and / or the rotor shaft and / or a stator of the dispersing tool, with respect to which the dispersing rotor rotates when the dispersing tool is used, with a coating of carbon and / or of amorphous carbon and / or of diamond-like carbon and / or to be provided with DLC and / or with diamond. In this way, surfaces of the elements that are possibly most heavily stressed during operation of the dispersing tool can be provided with coatings that have the desired properties, i.e. are particularly easy to clean and / or have a particularly high resistance to wear and therefore increase the stability of the dispersing tool .

In the case of the dispersing device defined at the outset, the object is achieved by the means and features of claim 13 and in particular by the fact that the dispersing tool is a dispersing tool according to one of claims 1 to 12.

It can be particularly expedient if the dispersing tool can be releasably connected to the dispersing device or is connected in the position of use. In addition or as an alternative to this, it can also be provided that the dispersing device has a counter-coupling designed to match a coupling of the dispersing tool already mentioned, for example, which is set up in particular to transmit torques from the drive to the rotor shaft. In addition or as an alternative to this, it is possible that a work stop defining the work position of the dispersing rotor and / or the rotor shaft is formed on the dispersing device. This work stop can then limit the adjustment path of the dispersing rotor and / or the rotor shaft on one side within the shaft tube of the dispersing tool when the dispersing tool is connected to the dispersing device.

In order to be able to fully exploit the advantages of the above-described dispersing tool according to the invention, it can be particularly useful if the drive unit, in particular on one, for example on the previously mentioned counter-coupling of the drive unit for the rotor shaft, to produce a magnetic coupling between the drive unit and the The rotor shaft has a permanent magnet with which one, for example the already mentioned magnetic drive-side end of the rotor shaft is magnetically coupled and / or connected in the use position. In this way, a dispersing device can be connected to a dispersing tool and the dispersing tool can be operated without having to provide a separate axial bearing for supporting the rotor shaft.

If a bayonet tool coupling is provided between the dispersing tool and the drive unit for releasably connecting the dispersing tool to the drive unit, the dispersing tool can be connected to the dispersing device easily and reliably.

It can be expedient here if an apex is arranged or formed in this way between a longitudinal slot and a transverse slot of a guide for the bayonet tool coupling is that one, for example the already mentioned, magnetic drive-side end of the rotor shaft in the position of use comes so close to one, for example the aforementioned, magnet or permanent magnet of the drive unit that a, for example the aforementioned magnetic coupling between the drive unit or the rotor shaft is produced when the bayonet tool coupling is closed.

In this way, it can be ensured that when the dispersing tool is properly coupled to the dispersing device, the magnetic drive-side end of the rotor shaft reaches the effective area of the permanent magnet of the drive unit and the magnetic coupling is established.

At this point it should be pointed out that in the case of the dispersing tool according to the invention described above, it can also be provided independently of the dispersing device that it has a bayonet coupling element which is set up for detachable connection to a bayonet mating coupling element on the dispersing device.

If the dispersing device, in particular the drive unit of the dispersing device, has a transmitter / receiver unit which is set up to read out and / or write to a transponder, for example the one already mentioned above, of the dispersing tool, the drive unit can operate depending on the data read out and thus a dispersing process can be carried out depending on this data.

In addition or as an alternative to this, it can be provided that the drive unit is set up by means of data that can be stored or stored on the transponder already mentioned, for example, for the identification of a dispersing tool, for example the one previously described in detail. In this way it is possible to allow the drive unit to recognize dispersing tools connected to the dispersing device and to operate the recognized dispersing tools with dispersing programs stored in the drive unit and approved for the corresponding dispersing tools.

It can be particularly expedient if the dispersing device, in particular the drive unit, has a control and / or regulating unit connected to the drive and, for example, the aforementioned transmitter / receiver unit, with which the drive operates as a function of the transmitter / receiver unit the data transmitted to the control and / or regulating unit can be controlled and / or regulated. In this way, dispersing processes can be controlled or regulated as a function of various data, for example parameters specific to the dispersing tool or else parameters that are detected by means of one, for example the aforementioned at least one sensor of the dispersing tool.

To expand the functional scope of the dispersing device, it can also be provided that the dispersing device has a temperature control device for controlling the temperature of the dispersing medium and / or can be connected to such a device or is connected in the use position. In a preferred manner, the temperature control device can be dependent on one, for example the aforementioned at least one sensor and / or can be controlled or regulated by a data transmitted, for example, to the transponder already mentioned above, in particular by means of a control unit of the dispersing device, for example the previously mentioned control unit.

Fig. 1:

eine perspektivische Seitenansicht einer erfindungsgemäßen Dispergiervorrichtung, wobei eine Antriebseinheit der Dispergiervorrichtung und ein mit dieser verbundenes, erfindungsgemäßes Dispergierwerkzeug zu erkennen sind,

Fig. 2:

eine Seitenansicht eines erfindungsgemäßen Dispergierwerkzeugs mit einer Bajonettwerkzeugkupplung an einem antriebsseitigen Ende des Dispergierwerkzeugs und einem Stator an dem antriebsseitigen Ende entgegengesetzten freien Ende des Dispergierwerkzeugs, wobei ein Dispergierrotor und eine Rotorwelle des Dispergierwerkzeugs in ihrer Arbeitsposition im Inneren eines Schaftrohrs des Dispergierwerkzeugs dargestellt sind,

Fig. 3:

das in Fig. 2 dargestellte erfindungsgemäße Dispergierwerkzeug mit dem Dispergierrotor und der Rotorwelle in Reinigungsposition,

Fig. 4:

eine geschnittene Seitenansicht des in den Fig. 2 und 3 dargestellten erfindungsgemäßen Dispergierwerkzeugs,

Fig. 5:

eine geschnittene Teilansicht der in Fig. 1 dargestellten Dispergiervorrichtung,

Fig. 6:

eine perspektivische Seitenansicht der in Fig. 1 dargestellten Dispergiervorrichtung mit einem weiteren erfindungsgemäßen Dispergierwerkzeug, an dessen Außenseite ein Temperatursensor angeordnet ist,

Fig. 7:

eine Seitenansicht des in Fig. 6 dargestellten erfindungsgemäßen Dispergierwerkzeugs, wobei ein Dispergierrotor des Dispergierwerkzeugs in seiner Arbeitsposition im Inneren des Schaftrohrs des Dispergierwerkzeugs angeordnet dargestellt ist,

Fig. 8:

das in den Fig. 6 und 7 dargestellte erfindungsgemäße Dispergierwerkzeug, wobei der Dispergierrotor in seiner Reinigungsstellung außerhalb des Schaftrohrs des Dispergierwerkzeugs dargestellt ist,

Fig. 9:

eine geschnittene Seitenansicht des in den Fig. 6 bis 8 dargestellten erfindungsgemäßen Dispergierwerkzeugs mit in Reinigungsposition befindlichem Dispergierrotor sowie

Fig. 10:

eine geschnittene Teilansicht der in Fig. 6 dargestellten erfindungsgemäßen Dispergiervorrichtung mit einem einen Temperatursensor aufweisenden Dispergierwerkzeug.

An exemplary embodiment of the invention is described in more detail below with reference to the drawing. It shows in a partly schematic representation:

Fig. 1:

a perspective side view of a dispersing device according to the invention, wherein a drive unit of the dispersing device and a dispersing tool according to the invention connected to it can be seen,

Fig. 2:

a side view of a dispersing tool according to the invention with a bayonet tool coupling at a drive-side end of the dispersing tool and a stator at the drive-side end opposite free end of the dispersing tool, a dispersing rotor and a rotor shaft of the dispersing tool being shown in their working position inside a shaft tube of the dispersing tool,

Fig. 3:

this in Fig. 2 The dispersing tool according to the invention shown with the dispersing rotor and the rotor shaft in the cleaning position,

Fig. 4:

a sectional side view of the in the Figs. 2 and 3 illustrated dispersing tool according to the invention,

Fig. 5:

a sectional partial view of the in Fig. 1 shown dispersing device,

Fig. 6:

a perspective side view of the in Fig. 1 shown dispersing device with a further dispersing tool according to the invention, on the outside of which a temperature sensor is arranged,

Fig. 7:

a side view of the in Fig. 6 shown dispersing tool according to the invention, wherein a dispersing rotor of the dispersing tool is shown in its working position in the interior of the shaft tube of the dispersing tool,

Fig. 8:

that in the Fig. 6 and 7th the dispersing tool according to the invention shown, the dispersing rotor being shown in its cleaning position outside the shaft tube of the dispersing tool,

Fig. 9:

a sectional side view of the in the Figures 6 to 8 illustrated dispersing tool according to the invention with the dispersing rotor in the cleaning position and

Fig. 10:

a sectional partial view of the in Fig. 6 illustrated dispersing device according to the invention with a dispersing tool having a temperature sensor.

The Fig. 1 and 6 show a dispersing device, designated as a whole by 1, with a drive unit 3 having a drive 2 and with a dispersing tool 4.

The Figs. 2 to 5 and FIGS. 7 to 10 show detailed views of two dispersing tools 4 according to the invention in different embodiments.

In the following description of the various embodiments of the dispersing tool 4 according to the invention, elements that correspond in terms of their function are given the same reference numerals even if they have a different design or shape.

Each of the dispersing tools 4 shown has a shaft tube 5 and a rotor shaft 6 rotatably mounted in the shaft tube 5. At a free end 7 of the dispersing tool 4 facing away from the drive 2 in the use position, a dispersing rotor 8 which can be driven with the aid of the rotor shaft 6 and is at least partially surrounded by the shaft tube 5 is arranged. This dispersing rotor 8 rotates during the operation of the dispersing tool 4 relative to a stationary stator 9 formed on the shaft tube 5. As the figures show, the stator 9 is slotted so that the dispersed medium can enter and exit through it.

A comparison of the Figs. 2 to 5 as well as 7 to 10 make clear that the dispersing rotor 8 between one in the shaft tube current working position (see Fig. 2 and 5 respectively Fig. 7 and 10 ) and a cleaning position located outside the shaft tube 5 (see Fig. 3 and 4th respectively Fig. 8 and 9 ) is arranged axially displaceably on the dispersing tool 4.

The sectional view of the Figures 4 and 5 9 and 10 illustrate that the dispersing rotor 8 together with the rotor shaft 6 is axially displaceable within the shaft tube 5 between a working stop 10 defining the working position of the dispersing rotor 8 and a cleaning stop 11 defining the cleaning position of the dispersing rotor 8.

All of the sectional views of the dispersing tool 4 also show that the dispersing rotor 8, together with the rotor shaft 6, is rotatably mounted in the shaft tube 5 of the dispersing tool 6 by means of a radial bearing 12, which in the embodiments of the dispersing tool 4 shown in the figures is designed as a ceramic radial plain bearing.

A distance between the working position and the cleaning position and an axial advance of the dispersing rotor 8 and the rotor shaft 6 from the working position into the cleaning position are at least as large as an axial dimension of the radial bearing 12. When the dispersing rotor 8 is moved into the cleaning position, between an outer bearing surface 13 of the Radial bearing 12 and the rotor shaft 6 have a flushing gap 14 which facilitates cleaning of the dispersing tool 4. Furthermore, the shaft tube 5 has two openings which serve as rinsing openings 14a when cleaning the dispersing tool and through the cleaning means and / or Cleaning fluid can enter the shaft tube 5.

The figures also show that the cleaning stop 11 is formed inside the shaft tube 5 and that the rotor shaft 6 has a shaft shoulder 15 designed to match the cleaning stop 11, an inner diameter of the shaft tube 5 limited by the cleaning stop 11 being smaller than an outer diameter of the shaft shoulder 15 is. A distance between the dispersing rotor 8 and the shaft shoulder 15 of the rotor shaft 6 is greater than a distance between the free end 7 of the shaft tube 5 and the cleaning stop 11, at least when this is arranged in its position assigned to the cleaning position of the dispersing rotor 8. This is in the Figures 3 , 4th , 8th and 9 shown.

The dispersing tool 4 has an actuating element 17 arranged on an outer side 16 of the shaft tube 5, which is connected to the dispersing rotor 8 and the rotor shaft 6 in such a way that the dispersing rotor 8 can be displaced together with the rotor shaft 6 by means of the actuating element 17 between the working position and the cleaning position is.

The actuating element 17 comprises a slide 19 which is guided in an elongated hole 18 which is arranged in the shaft tube 5 and extends in the axial direction Adjustment of the dispersing rotor 8 between the working position and the cleaning position in at least one direction of movement of the dispersing rotor 8 and the rotor shaft 6 engages behind. In particular from the sectional views of Dispersing tools 4 it becomes clear that the cleaning stop 11 in the present exemplary embodiments of the dispersing tools 4 according to the invention is formed on the actuating element 17 and in particular on the pin 20 of the actuating element 17 reaching into the shaft tube 5. In conjunction with the shaft shoulder 15, the pin 20 prevents the rotor shaft 6 from being able to be pulled completely out of the shaft tube 5.

The actuating element 17 can be displaced between a first latching point 22 associated with the working position of the dispersing rotor 8 and a second latching point 23 associated with the cleaning position of the dispersing rotor 8 on the shaft tube 5 in the longitudinal direction of the shaft tube 5. The figures also show that an axial dimension of the elongated hole 18 is at least as large as a distance between the working position and the cleaning position of the dispersing rotor 8.

Another embodiment of the actuating element 17, not shown in the figures, but nevertheless according to the invention, provides that the actuating element 17 has or comprises a magnetic coupling element. By means of this magnetic coupling element, the actuating element 17 is magnetically connected to the dispersing rotor 8 and / or to the rotor shaft 6. In this context, one can also speak of a magnetic coupling between the actuating element 17 and the dispersing rotor 8 or the rotor shaft 6. The magnetic coupling between the actuating element 17 and the dispersing rotor 8 or the rotor shaft 6 is such that by moving the actuating element 17 and / or the rotor shaft 6 between the The working position and the cleaning position can be moved.

The magnetic coupling element of the actuating element 17 comprises at least one magnet. This can, for example, be designed as a permanent magnet or also as an electromagnet. The dispersing rotor 8 and / or the rotor shaft 6 have a counter-coupling element with which the magnet of the coupling element can be magnetically coupled or coupled in order to transmit an adjustment movement of the actuating element 17 to the dispersing rotor 8 and / or the rotor shaft 6. By transmitting the movement of the actuating element 17 via the magnetic coupling to the dispersing rotor 8 or the rotor shaft 6, the dispersing rotor 8 and / or the rotor shaft 6 can be shifted between the working position and the cleaning position.

The rotor shaft 6 of the dispersing tool 4 has a coupling 25 at a drive-side end 24 of the dispersing tool 4 facing the drive unit 3 in the position of use for releasable connection to the drive unit 3 of the dispersing device 1 and for the transmission of torques from the drive unit 3 to the rotor shaft 6. This coupling 25 is designed to match a mating coupling 26 formed on the drive unit 3.

The rotor shaft 6 of the dispersing tool 4 is magnetic and / or ferromagnetic at its drive-side end 24 facing away from the dispersing rotor 8. It can be provided, for example, that the rotor shaft 6 at this point consists of a ferromagnetic material, for example of ferromagnetic stainless steel, or has a covering made of a ferromagnetic material.

In the Figures 6 to 10 In the illustrated embodiments of the dispersing tool, it is provided that at least one sensor 27 is arranged on the dispersing tool 4, namely adjacent to the free end 7 of the shaft tube 5. The one in the Figures 6 to 10 illustrated embodiment of the dispersing tool, this sensor 27 is a temperature sensor. In other exemplary embodiments of the dispersing tool 4, not shown in the figures, it is provided that the dispersing tool 4 has a pH value sensor and / or a pressure sensor or similar other sensors instead of a temperature sensor.

From the Figures 6 to 10 it can also be seen that the sensor 27, designed here as a temperature sensor, is arranged in a recess 28 on the outer side 16 of the shaft tube 5. In a groove 29, a sensor connection 30 is arranged on the outside 16 of the shaft tube 5, starting from the sensor 27 and running towards the drive-side end 24 of the shaft tube 5 of the dispersing tool 4.

This sensor connection 30 can for example be designed in the form of a cable or else in the form of an electrically conductive coating. In the context of this application, a sensor connection is to be understood as any means that allows information to be transmitted from the sensor 27 to the drive-side end 24 of the dispersing tool 4 or also to the drive unit 3 of the dispersing device 1. The sensor connection 30 is thus expressly not limited to a wired connection between the sensor 27 and the drive-side end 24 of the dispersing tool 4 or between the sensor 27 and the drive unit 3 of the dispersing device.

All of the dispersing tools 4 shown in the figures have a writable transponder 31, which is designed, for example, as an RFID chip and includes a data memory 32. Dispersing tool-specific data, for example operating data such as permissible speeds of the dispersing tool 4, data received from the at least one sensor 27 of the dispersing tool 4 and data sent to the transponder 31 by a transmitter / receiver unit 33 of the drive unit 3 of the dispersing device 1 can be stored on the data memory 32.

To transmit measurement data, the sensor 27 can be connected to the drive unit 3 of the dispersing device 1 and is connected in the use position. In addition, it is provided that the sensor 27, in particular wired, can be or is connected to the transponder 31. The connecting means in this case is the sensor connection 30.

In the present exemplary embodiments, it is provided that the transponder 31 has evaluation electronics 34 for processing measurement data received from the at least one sensor 27 and is set up for the wireless transmission of measurement data to the drive unit 3 of the dispersing device 1, in particular to the transmitter / receiver unit 33 . The dispersing tool 4 can be detachably connected to the dispersing device 1 and is connected in the position of use.

The dispersing tool 4 or at least elements of the dispersing tool 4 which come into contact with the medium to be dispersed when the dispersing tool 4 is in use, namely at least the dispersing rotor 8 and at least parts of the rotor shaft 6 and the stator 9 of the dispersing tool 1, can be provided with a non-stick coating if required. This coating has the task of preventing dirt particles from adhering or at least making it more difficult. As a result, dirt particles can be removed more easily from these elements or parts of the dispersing tool 4, as a result of which the cleanability of the dispersing tool 4 is improved. Such coatings can therefore also be referred to as easy-to-clean coatings. Suitable coatings can consist of carbon and / or of amorphous carbon and / or of diamond-like carbon and / or of diamond-like carbon (DLC). It is also provided that at least particularly highly stressed parts of the dispersing tool 4, such as the dispersing rotor 8, at least parts of the rotor shaft 6 or even the stator 9, are provided with a coating that has a greater hardness than uncoated stainless steel. Coatings with a hardness of over 1000 HV (Vickers hardness) are suitable for this. This leads to a higher stability of the dispersing tool and can also improve the chemical resistance of the parts of the dispersing tool 4 provided with such a coating. It is also conceivable to provide diamond coatings on the dispersing tool 4 which, in addition to maximizing the surface hardness of the coated parts, can also maximize the wear resistance of the parts of the dispersing tool 4 provided with such a coating.

As already mentioned above, the dispersing device 1 has a mating coupling 26 designed to match the coupling 25 of the dispersing tool 4, by means of which torques can be transmitted from the drive 2 of the drive unit to the rotor shaft 6.

The drive unit 3 of the dispersing device 1 has a permanent magnet 35 on the mating coupling 26 of the drive unit 3 for the rotor shaft 6 to produce a magnetic coupling between the drive unit 3 and the rotor shaft 6. The magnetic drive-side end 24 of the rotor shaft 6 is magnetically coupled to this permanent magnet 35 in the position of use and connected to it. A separate axial bearing of the rotor shaft 6, as is customary with the dispersing tools 4 known from the prior art, can thus be dispensed with.

Between the dispersing tool 4 and the drive unit 3 of the dispersing device 1, a bayonet tool coupling 36 is provided for releasably connecting the dispersing tool 4 to the drive unit 3.

An apex between a longitudinal slot and a transverse slot of a guide of the bayonet tool coupling 36 is arranged or designed in such a way that the magnetic drive-side end 24 of the rotor shaft 6 comes so close to the permanent magnet 35 of the drive unit 3 in the use position that the magnetic coupling between the drive unit 3 and the rotor shaft 6 is automatically produced when the bayonet tool coupling 36 is closed.

As already mentioned above, the dispersing device 1, and here in particular the drive unit 3, has a transmitter / receiver unit 33, which is set up for reading and writing to the transponder 31 of the dispersing tool 4. As a result, the drive unit 3 of the dispersing device is set up for identifying the dispersing tool 4 by means of data that can be stored or stored on the transponder 31. In addition, the drive unit 3 has a Drive 2 and control and / or regulating unit 37 connected to the transmitter / receiver unit 33, with which the drive 2 can be controlled and / or regulated as a function of the data transmitted to the control and / or regulating unit 37 by the transmitter / receiver unit 33.

In an exemplary embodiment of the dispersing device 1 not shown in the figures, it is provided that the dispersing device 1 has a temperature control device for temperature control, i.e. for heating or cooling, the medium to be dispersed or can be connected to such a device or is connected in the position of use. The temperature control device can also be controlled or regulated as a function of the at least one sensor 27 and data transmitted by the transponder 31, in particular by means of the control / regulating unit 37 of the dispersing device 1.

A user interface 38 is provided on the drive unit 3 of the dispersing device 1. This user interface 38 has various displays and displays as well as operating elements by means of which the drive unit 3 can be operated.

Together with at least two exchangeable dispersing tools 4 according to the invention, the dispersing device 1 forms a dispersing arrangement according to the invention.

To simplify cleaning of the dispersing tool 4, it is provided that the dispersing rotor 8 is arranged axially displaceably on the dispersing tool 4 between the working position located in the shaft tube 5 and the cleaning position located outside of the shaft tube 5, the dispersing rotor 8 in the cleaning position, preferably completely, is arranged outside of the shaft tube 5 and can thus be easily cleaned.

Claims (19)

1. Dispersion tool (4) with a shaft tube (5) and a rotor shaft (6) mounted so as to be rotatable in the shaft tube (5), wherein a dispersion rotor (8) is arranged at a free end (7) of the dispersion tool (4), facing away from a power unit (2) in the operating position, which dispersion rotor is drivable with the aid of the rotor shaft (6) and is at least partly surrounded by the shaft tube (5), wherein the dispersion rotor (8) is arranged on the dispersion tool (4) so as to be axially displaceable between a working position located inside the shaft tube (5) and a cleaning position located outside the shaft tube (5), wherein the dispersion rotor (8) and/or the rotor shaft (6) are mounted in the shaft tube (5) of the dispersion tool (4) so as to be rotatable by means of a radial bearing (12), wherein a distance between the working position and the cleaning position and an axial advance of the dispersion rotor (8) and/or of the rotor shaft (6) from the working position into the cleaning position is at least as large as an axial dimension of the radial bearing (12), characterized in that a flushing gap (14) is present between a bearing outer surface (13) of the radial bearing (12) and the radial shaft (6), when the dispersion rotor (8) has been displaced into the cleaning position.
2. Dispersion tool (4) according to Claim 1, characterized in that the dispersion tool (4) has a cleaning limit stop (11) that defines the cleaning position of the dispersion rotor (8), or in that the dispersion rotor (8) and/or the rotor shaft (6) are mounted axially inside the shaft tube (5) so as to be displaceable, in particular axially displaceable, between a working limit stop (10) that defines the working position of the dispersion rotor (8) and a cleaning limit stop (11) that defines the cleaning position of the dispersion rotor (8).
3. Dispersion tool (4) according to either of Claims 1 and 2, characterized in that a or the cleaning limit stop (11) is formed inside the shaft tube (5), and in that the rotor shaft (6) has a shaft shoulder (15) constructed to be compatible with the cleaning limit stop (11), wherein an internal diameter of the shaft tube (5) defined by the cleaning limit stop (11) is smaller than an external diameter of the shaft shoulder (15).
4. Dispersion tool (4) according to any one of Claims 1 to 3, characterized in that the dispersion tool (4) has an actuating element (17) arranged on an outer side (16) of the shaft tube (5), which is connected to the dispersion rotor (8) and/or to the rotor shaft (6) in such a manner that the dispersion rotor (8) and/or the rotor shaft (6) is displaceable between the working position and the cleaning position by means of the actuating element (17), particularly wherein a or the cleaning limit stop (11) that defines the cleaning position of the dispersion rotor (8) is formed on the actuating element (17).
5. Dispersion tool (4) according to Claim 4, characterized in that the actuating element (17) comprises a slider (19) which is guided in a slot (18) that is arranged and extends in the axial direction in the shaft tube (5), in particular wherein the slider (19) has a pin (20) which protrudes through the slot (18) and into the shaft tube (5), which pin clasps behind at least one pin shaft shoulder (21) of the rotor shaft (6) to move the dispersion rotor (8) between the working position and the cleaning position in at least one direction of movement of the dispersion rotor (8) and/or of the rotor shaft (6).
6. Dispersion tool (4) according to Claim 4 or 5, characterized in that the actuating element (17) has a magnetic coupling element, by means of which the actuating element (17) is magnetically connectable or connected, particularly coupled, to the dispersion rotor (8) and/or to the rotor shaft (6), such that a movement of the actuating element (17) can be transmitted via the magnetic coupling to the dispersion rotor (8) and/or to the rotor shaft (6), and the dispersion rotor (8) and/or the rotor shaft (6) is/are displaceable between the working position and the cleaning position.
7. Dispersion tool (4) according to any one of Claims 1 to 6, characterized in that the dispersion tool (4), particularly the rotor shaft (6), has a coupling (25) on a power-unit-side end (24) facing a drive unit (3) in the operating position for detachable connection with a drive unit (3) of a dispersion device (1) and/or for transmitting torques from a drive unit (3) to the rotor shaft (6), wherein the coupling (25) is constructed to be compatible with a counter coupling (26) formed on the drive unit (3).
8. Dispersion tool (4) according to any one of Claims 1 to 7, characterized in that the power-unit-side end (24) of the rotor shaft (6) of the dispersion tool (4) facing away from the dispersion rotor (8) is magnetic and/or ferromagnetic, in particular consists of a ferromagnetic material, for example ferromagnetic stainless steel, or is furnished with a coating of a ferromagnetic material.
9. Dispersion tool (4) according to any one of Claims 1 to 8, characterized in that at least one sensor (27), in particular a temperature sensor and/or a pH sensor and/or a pressure sensor, is arranged on the dispersion tool (4), preferably on or adjacent to the free end (7) of the shaft tube (5).
10. Dispersion tool (4) according to any one of Claims 1 to 9, characterized in that the dispersion tool (4) is equipped with a preferably writable transponder (31), in particular wherein the transponder (31) is an RFID chip and/or in particular wherein the transponder (31) has a data memory (32) in which can be and/or is stored data specific to the dispersion tool, for example operating data of the dispersion tool (4), and/or data received from a or the at least one sensor (27) of the dispersion tool (4), and/or data transmitted to the transponder (31) by a transmitter/receiver unit (33).
11. Dispersion tool (4) according to any one of Claims 1 to 10, characterized in that a or the at least one sensor (27) is connectable to a drive unit (3) of a dispersion device (1) for transmitting measurement data and/or connectable or connected, particularly connected by cable, to a or the transponder (31), wherein the transponder (31) is equipped with an electronic evaluation unit (34) for processing measurement data received from the at least one sensor (27) and is configured for wirelessly transmitting measurement data to a drive unit (3) of a dispersion device (1), particularly to a transmitter/receiver unit (33).
12. Dispersion tool (4) according to any one of Claims 1 to 11, characterized in that the dispersion tool (4) or at least one element of the dispersion tool (4) which comes into contact with medium that is to be dispersed when the dispersion tool (4) is used, in particular the dispersion rotor (8) and/or the rotor shaft (6) and/or a stator (9) of the dispersion tool (4), is furnished with a non-stick coating, which preferably lowers a surface energy of the coated element or of the dispersion tool (4), and/or in that the dispersion tool (4) or at least one element of the dispersion tool (4) which comes into contact with medium that is to be dispersed when the dispersion tool (4) is used, in particular the dispersion rotor (8) and/or the rotor shaft (6) and/or a stator (9) of the dispersion tool (4), is furnished with a coating having a greater hardness than uncoated stainless steel.
13. Dispersion device (1) with a drive unit (3) having a power unit (2) and with a dispersion tool (4) according to any one of Claims 1 to 12.
14. Dispersion device (1) according to Claim 13, characterized in that the dispersion tool (4) is detachably connectable or connected in the operating position to the dispersion device (1), and/or in that the dispersion device (1) is equipped with a counter coupling (26) constructed to be compatible with a or the coupling (25) of the dispersion tool (4), in particular which is configured to transmit torques from the power unit (2) to the rotor shaft (6), and/or in that a working limit stop (10) defining the working position of the dispersion rotor (8) is formed on the dispersion device (1).
15. Dispersion device (1) according to Claim 13 or 14, characterized in that the drive unit (3) is equipped with a magnet or permanent magnet (35), particularly on a or the counter coupling (26) of the drive unit (3) for the rotor shaft (6), to create a magnetic coupling between the drive unit (3) and the rotor shaft (6), with which magnet or permanent magnet a or the magnetic power-unit-side end (24) of the rotor shaft (6) is magnetically coupled and/or connected in the operating position.
16. Dispersion device (1) according to any one of Claims 13 to 15, characterized in that a bayonet-style tool coupling (36) is provided between the dispersion tool (4) and the drive unit (3) for detachably connecting the dispersion tool (4) to the drive unit (3), wherein a vertex is arranged or formed between a lengthwise slot and a transverse slot of a guide for the bayonet-style tool coupling (36) in such a manner that a or the magnetic power-unit-side end (24) of the rotor shaft (6) comes close enough to a or the magnet or permanent magnet (35) of the drive unit (3) in the operating position that a or the magnetic coupling can be created between the drive unit (3) and the rotor shaft (6) when the bayonet-style tool coupling (36) is closed.
17. Dispersion device (1) according to any one of the preceding Claims 13-16, characterized in that the dispersion device (1), in particular the drive unit (3), is equipped with a transmitter/receiver unit (33) which is configured to read from and/or write to a or the transponder (31) of the dispersion tool (4), and/or in that the drive unit (3) is configured for identification of a or the dispersion tool (4) by means of data that can be stored or is stored on a or the transponder (31).
18. Dispersion device (1) according to any one of the preceding Claims 13-17, characterized in that the dispersion device (1), in particular the drive unit (3), is equipped with a control and/or regulating unit (37) that is connected to the power unit (2) and to a or the transmitter/receiver unit (33), with which control and/or regulating unit the power unit (2) can be controlled and/or regulated on the basis of data transmitted by the transmitter/receiver unit (33) to the control and/or regulating unit (37).
19. Dispersion device (1) according to any one of the preceding Claims 13-18, characterized in that the dispersion device (1) is equipped with a temperature control device for controlling the temperature of medium that is to be dispersed, and/or which is connectable or connected in the operating position thereto, preferably wherein the temperature control device can be controlled or regulated in particular by means of a or the control/regulating unit (37) of the dispersion device (1) on the basis of data transmitted by a or the at least one sensor (27) and/or by a or the transponder (31).

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