EP3331647A1

EP3331647A1 - Separating device, agitator bead mill and method for classifying product mixtures

Info

Publication number: EP3331647A1
Application number: EP16762960.9A
Authority: EP
Inventors: Lars-Peter Weiland; Thomas GOLLER
Original assignee: Netzsch Feinmahltechnik GmbH
Current assignee: Netzsch Feinmahltechnik GmbH
Priority date: 2015-08-04
Filing date: 2016-07-23
Publication date: 2018-06-13
Anticipated expiration: 2036-07-23
Also published as: DE102015112760A1; ES2774466T3; CN106423817A; CN106423817B; DE102015112760B4; WO2017020880A1; EP3331647B1

Abstract

The invention relates to a separating device for classifying product mixtures consisting of at least two different components. The separating device comprises a shaft, a stationary screen unit and at least one classifying rotor. At least particles of the at least one component of the product mixture can pass through the screen unit up to a determined diameter. The classifying rotor comprises a support plate mounted on the shaft in a non-rotational manner, as well as one or more attachments that are mechanically coupled to the support plate. The attachments influence a flow behavior of the product mixture in the region of the screen unit. The one or more attachments can be fixed in different positions on the support plate relative to the rotating shaft such that, depending on the respective positions, different flow behaviors of the product mixture can be achieved in the region of the screen unit. The invention also relates to an agitator bead mil having a separating device and a method for classifying product mixtures by means of a separating device.

Description

Separating device, agitator ball mill and method for classifying product mixtures

The present invention relates to a separation device, a

Agitator ball mill and a method for classifying product mixtures according to the features of the preambles of claims 1, 8 and 12.

State of the art

The invention relates to a rotor finger of a rotor, which is arranged around a separation system in the region of the product outlet of agitator ball mills. The agitator ball mill is a device for coarse, fine and very fine comminution or homogenization of regrind. It consists of a grinding chamber with a stirrer in which grinding stock is comminuted by grinding media.

Agitator ball mills are usually constructed of a horizontally or vertically arranged, approximately circular cylindrical grinding container. The agitator ensures the intensive movement of the grinding media with suitable stirring elements. The agitator ball mills are filled through an opening in or adjacent to one of the end walls. The millbase suspension is pumped continuously through the grinding chamber. The suspended solids are crushed or dispersed by impact and shear forces between the grinding media. The discharge is from the

Design depends on, for example, through slots in the grinding chamber wall at the mill end, the grinding media by a suitable separator

be withheld.

For example, a separating device is formed by a separating screen, wherein a rotor or rotor cage is arranged rotatably about the separating screen. The rotor or rotor cage sits on the stirrer shaft and is not driven separately. The rotor cage is formed in particular by a rotor disk, on whose outer edge rotor fingers are arranged. The rotor fingers are arranged axially to the longitudinal axis of the agitator shaft. Due to the rotational movement of the rotor fingers forming the cage around the separating screen, flows and Forces which prevent the grinding media and non-screenable product from adhering and / or clogging on the dividing screen.

Depending on the particular product and / or the respective

used grinding bodies are different radial distances between the separating screen and the rotor fingers of the rotor cage necessary to generate the necessary currents and forces. If the radial distance between the dividing screen and the rotor fingers is too large, then the necessary cleaning is insufficient or only given deficient. In particular, a so-called "string of pearls" can form, in which the grinding media, as on a string, settle in the grooves of the separating sieve and clog it up.

DE 69525334 T2 describes an attrition mill with a rotor cage separation system. In the area of the product outlet, a cylindrical separating sieve is arranged. This has openings whose dimensions are chosen so that they allow the outflow of sufficiently finely ground regrind, but retain the grinding media. Around the separation screen around a separator rotor is arranged. This consists of a rotor disk and your plurality of rotor fingers, which extend parallel to the agitator axis, are at the circumference of the rotor disk at the same angle and are located radially outside of the separating screen.

The rotation of the rotor fingers of the separator rotor about the separation screen causes axial rotation of the product-media mixture and prevents clogging of the separator screen with coarse particles flowing away from the separation screen through the rotor fingers.

Furthermore, there are embodiments in which the Trennsiebmaschen or gaps are larger than the grinding media used. Here, the separation of the

Grinding media from the product flow purely via centrifugal forces. Such embodiments are also described in DE 69525334 T2. If these centrifugal forces are not sufficient, then the grinding media leaves the agitator ball mill with the product stream.

In order to prevent clogging of the dividing screen, rotor fingers are known which have strips or wipers which extend as far as the dividing screen

approach and how scrapers work. However, these strips or wipers have the disadvantage that they act directly on the dividing screen and product or Grinding can push into the mesh of the separation screen, which in turn can clog. Furthermore, there is a risk with very abrasive materials that the dividing screen wears faster or is destroyed.

The object of the invention is to provide an improved separation system which does not have the above-mentioned disadvantages of the prior art.

The above object is achieved by a separator, a

Agitator ball mill and a method for classifying mixtures of products comprising the features in claims 1, 8 and 12. Further advantageous embodiments are described by the subclaims.

description

The invention relates to a separating device for classifying

Product mixtures comprising at least two different (product) components. The separation device comprises a shaft, a stationary arranged sieve unit and a Klassierrotor. The sieve unit comprises sieve openings through which at least particles of at least one constituent of the product mixture can pass up to a certain diameter. The classifying rotor comprises a non-rotatably mounted on the shaft support plate and one or more mechanically coupled to the support plate essays that affect a flow behavior of the product mixture in the screen unit.

The one or more essays can be fixed in different position positions relative to the rotating shaft on the support plate. In

Dependence of the respective position of one or more attachments, different flow behavior of the product mixture in the area of the sieve unit can be effected.

The support plate is preferably formed as a disc. According to a preferred embodiment of the invention, the support plate has a plurality of in a defined, each same radial distance from the center of the support plate arranged fixing. Adjacent fixing agents are in particular at a respective same angle spaced from each other. The essays have trained corresponding to the fixing

Fastener on. The attachments can be fixed via the attachment means to the fixing in each case at least two different position positions.

The attachments can be fixed to the fixed positions defined by the fixing means in different positional positions, in particular in different rotational positions. The different position positions respectively

Drehlagen differ in that in a first position position

or first rotational position, a first minimum radial distance between the attachments and the sieve unit is different from a second minimum radial distance between the attachments and the sieve unit in a second

Position position or second rotational position.

According to a further embodiment, it is provided that all attachments are arranged in the same position or rotational position, so that all attachments have the same minimum radial distance to the screen unit. Alternatively, it can be provided that the attachments are arranged alternately in a first rotational position and in a second rotational position, so that the attachments have a first minimum radial distance and a second minimum radial distance to the screen unit alternately. According to a further embodiment, a first part of the attachments are arranged in a first rotational position and a second, remaining part of the attachments in a second rotational position. The first part of the attachments has a first minimum radial distance and the second part of the attachments has a second minimum radial distance to the screen unit. About a different arrangement of the essays in different

Rotary positions, the flow behavior of the product mixture can be selectively changed, thereby changing the Klassierwirkung the separator. Thus, with a separating device and a single type of essays different product mixtures can be separated. According to one embodiment of the invention, the attachments are particularly rod-shaped and extend in the assembled state of the Support plate from in the direction of the sieve unit. In particular, it is provided that the attached to the support plate essays are aligned parallel to the shaft and orthogonal to the support plate. The rod-shaped attachments preferably have a continuous cross section in the shape of a rectangle, a rhombus or a kite quadrangle. The respective fastening means may be formed centered in the center of the cross section of the attachment or else the attachment means is formed decentralized to the center of the cross section of the attachment. Of the

Cross-section, the formation and / or arrangement of the fastener

determine how many differing positional positions or

Rotary positions can take the essays on the support plate. For the expert, this results in a variety of ways.

It is important that the arrangement of the essays on the support plate must be balanced so that upon rotation of the support plate to the shaft no

Imbalance arises. For example, with an even total of

Essays only two directly oppositely arranged essays be arranged in a first position position or first rotational position, while the remaining essays have a second position position or second rotational position. Alternatively, if the number of attachments is a multiple of two and a multiple of three, three rotor fingers each may be arranged at such regularly selected intervals that the separator does not imbalance when rotated about the shaft. For the skilled person thus results in a variety of different arrangements.

According to one embodiment of the invention, the support plate is a

Rotor disc, the essays are rotor fingers and the sieve unit is formed as a cylindrical separating sieve, wherein the longitudinal axis of the separating sieve is arranged coaxially to the rotating shaft of the separating device. The rotor disk and the rotor fingers form a so-called rotor cage. The rotor disk has a plurality of fixing means arranged at a defined, respectively equal radial distance from the center of the rotor disk, wherein adjacent fixing means are arranged at a respective same angle at a distance from each other. The rotor fingers point

Corresponding to the fixing means formed fastening means and can in different position positions or rotational positions on the Fixing means are fixed to the fixing means of the rotor disc. In a first rotational position, a first minimum radial distance between the rotor finger and the separating screen is formed and in a second rotational position, a second minimum radial distance between the rotor finger and the separating screen is formed, wherein the first minimum radial distance and the second minimum radial distance differ from each other.

The fixing means are for example arranged as orthogonal on the support plate in a radius about the center of the support plate arranged mounting rods

formed, which have a substantially square cross-section. The

Rotor fingers have, for example, a rectangular cross-section, furthermore a receptacle extending at least partially from a free end of the rotor finger along the longitudinal axis of the rotor fingers for one each

Mounting rod, wherein the receptacle corresponding to the cross section of the mounting rods is also formed substantially square and in

Center of the cross section of the rotor finger is arranged. The rotor finger can be mounted in four position positions on the mounting rod, wherein due to the central arrangement of the recording each two position positions result in an identical appearance of the rotor finger on the support plate.

If, on the other hand, the rotor finger has a different cross section, for example in the form of a rhombus or a kite quadrilateral, and / or the receptacle for the fastening rod is not centrally along the longitudinal axis of the rotor finger but decentralized thereto, then the rotor finger can be arranged in further position positions, respectively show a different appearance.

Depending on whether all rotor fingers are arranged in the same position position or rotational position or else in different position positions or rotational positions, a different one now becomes with rotation of the shaft

Flow behavior of the product mixture within the separation device, in particular on the separation screen produced.

The invention further relates to a stirred ball mill comprising a cylindrical grinding container having a Mahlguteinlass and a Mahlgutauslass, wherein in the grinding container, a stirring shaft is arranged with stirring elements. In the agitating ball mill, the product to be milled is mixed with grinding media, which cause comminution of the product due to the continuous movement. At the Mahlgutauslass the grinding media are separated from the sufficiently ground product. While the grinding media remain in the grinding container, the milled product is discharged.

For the separation of grinding media and product, a separating device is arranged at the Mahlgutauslass comprising a stationary arranged sieve unit and at least one Klassierrotor. The sieve unit has sieve openings which can pass at least particles of the at least one constituent of the product mixture up to a certain diameter. The classifying rotor comprises a support plate which is seated non-rotatably on the agitator shaft of the agitator ball mill and one or more attachments mechanically coupled to the support plate, in order to allow a flow behavior of the product mixture in the region of the sieve unit

influence. The one or more essays on the support plate are in

set different position positions relative to the rotating shaft on the support plate such that, depending on the respective position position different flow behavior of the product mixture, in particular consisting of

vermählendem product and grinding media, be effected in the area of the screening unit.

Preferably, the agitator ball mill separator includes the above-described features of the general separator, wherein the agitator shaft of the agitator ball mill functions as a shaft of the separator.

The sieve unit has, for example, a cylindrical shape. The longitudinal axis of the cylinder is arranged in particular coaxially to the longitudinal axis of the agitator shaft. The center of the support plate of the separation device is arranged on the longitudinal axis of the agitator shaft and the extension of the longitudinal axis of the sieve unit. The the

Classifying rotor forming support plate with the essays is in particular arranged such that the articles around the sieve unit in the direction of

Grist outlet extend and rotate upon rotation of the agitator shaft to the cylindrical sieve unit. This creates currents and suction effects, the one

Prevent the grinding media from settling on the screen unit. In particular, the grinding media are thrown outward by the distances between the attachments of the classifying rotor and are thus conducted back into the grinding container. The invention further relates to a method for classifying

Product mixtures by means of a separating device, in particular by means of a separating device described above. By changing the position of individual or all essays on the support plate, the flow behavior of

Product mixture in the area of the sieve unit specifically changed to set the desired Klassierwirkung. By changing the position position of the attachments, in particular minimum radial distances between the attachments and a center of the support plate can be changed and adjusted according to the desired flow behavior of the product mixture. The method can also be used to classify product mixtures in one

Agitator ball mill can be used, in particular for separating

Grinding media of ground product. In particular, the method may also be used to minimize minimum radial distances between the rotor fingers of a stirring ball mill separator and a screen unit

To set separator of the agitator ball mill. For example, at least two rotor fingers fixed in a first rotational position are separated from the

Removing means of the rotor disk of the separation device of the agitator ball mill removed and fixed in a second rotational position on the fixing means, wherein a first minimum radial distance between the at least two rotor fingers and the screen unit in the first rotational position is different from a second minimum radial distance between the at least two balanced to each other on the Support plate arranged rotor fingers and the screening unit in the second rotational position.

DESCRIPTION OF EMBODIMENTS In the following, exemplary embodiments are intended to explain the invention and its advantages in more detail with reference to the enclosed figures. The proportions of the individual elements to one another in the figures do not always correspond to the actual size ratios, since some shapes are simplified and other shapes are shown enlarged in relation to other elements for better illustration. Figure 1 shows a separating device according to the conventionally known prior art. Figure 2 shows a plan view of a support plate or

Rotor disc of a separator according to the conventionally known prior art.

Figure 3 shows a plan view of a support plate or

Rotor disc of a separating device with arranged thereon first essays with a first cross section according to the conventionally known prior art.

Figure 4 shows a plan view of a support plate or

Rotor disc of a separating device with second attachments arranged thereon with a second cross section according to the conventionally known prior art. Figure 5 shows a plan view of a support plate or

Rotor disc of a separating device with arranged thereon third essays with a third cross section in a first rotational position.

Figure 6 shows a plan view of a support plate or

Rotor disk of a separating device with arranged thereon third essays with a third cross section in a second rotational position.

FIG. 7 shows a plan view of a support plate or rotor disk of a separating device with third attachments arranged thereon with a third cross section in a third rotational position.

Figure 8 shows a plan view of a support plate or

Rotor disk of a separating device with arranged thereon third essays with a third cross section in a fourth rotational position.

Figure 9 shows a plan view of a support plate or

Rotor disc of a separating device arranged thereon fourth essays with a fourth cross section in a first rotational position. Figure 10 shows a plan view of a support plate or

Rotor disc of a separating device with arranged fourth attachments with a fourth cross section in a second rotational position. Figure 11 shows a plan view of a support plate or

Rotor disc of a separating device with arranged fifth attachments with a fifth cross section in a first rotational position.

Figure 12 shows a plan view of a support plate or

Rotor disc of a separating device with arranged fifth attachments with a fifth cross section in a second rotational position.

Figure 13 shows a plan view of a support plate or

Rotor disc of a separating device with arranged fifth attachments with a fifth cross section in a third rotational position. Figure 14 shows a plan view of a support plate or

Rotor disc of a separating device with arranged fifth attachments with a fifth cross section in a fourth rotational position.

For identical or equivalent elements of the invention, identical reference numerals are used. Furthermore, for the sake of clarity, only reference symbols are shown in the individual figures, which are required for the description of the respective figure. The illustrated embodiments are merely examples of how the device or method of the invention may be configured and are not an exhaustive limitation.

FIG. 1 shows a separating device 5 according to the conventionally known prior art. FIGS. 2 to 4 each show a plan view of a support plate or rotor disk 8 of a separation device 5 according to the conventionally known prior art.

Agitator ball mills comprise an agitator comprising a stirring shaft 3 and stirring elements arranged thereon, wherein the stirring shaft 3 is generally arranged coaxially with the longitudinal axis of the cylindrical grinding container (not shown) and moves in the direction of the drive side of the agitator ball mill

Product outlet 4 of the stirred ball mill extends. The agitator ensures by the rotation of suitable stirring elements to the agitator shaft 3 for the intensive movement of the grinding media. The discharge of sufficiently ground product takes place via the product outlet 4 at the end of the mill, the grinding bodies being retained by a separating device 5.

The separating device 5 is formed by a separating sieve 6, a shaft 2 and a classifying rotor 1. In the illustrated agitator ball mill, the agitator shaft 3 simultaneously acts as shaft 2 of the separation device. The classifying rotor 1 is arranged at the outlet end of the agitator shaft 3, in particular is the

Classifying rotor 1 rotatably arranged around the separating screen 6 around. The classifying rotor 1 is designed, in particular, as a rotor cage 7 and consists of a rotor disk 8 arranged on the agitator shaft 3, on the outer edge of which rotor fingers 9 are arranged in a regular arrangement. The rotor fingers 9 are aligned parallel to the longitudinal axis of the agitator shaft 3. By the rotational movement of the rotor fingers 9 to the

Separating sieve 6 generates currents and forces which prevent the grinding media and non-sieving product from adhering to or blocking the separating sieve 6. In order to be able to set different radial spacings between the separating sieve 6 and the rotor fingers 9 of the rotor cage 7 as a function of the respective product and / or the respective grinding bodies used, fixing units 10 are provided on the rotor disk 8 on which different rotor fingers 9a, 9b are arranged and fastened can be (see in particular Figures 3 and 4).

The fastening units 10 are designed, in particular, as fixing rods 11 which are arranged fixedly on the rotor disk 8 and which have an approximately square cross-section. The mounting rods 1 1 are arranged at the same angle at the same angle to each other on the circumference of the rotor disk 8 and extend parallel to the stirring shaft. 3

FIG. 3 shows an arrangement of first attachments or rotor fingers 9a having a first, approximately square cross section Qa and a side length sa, and FIG. 4 shows an arrangement of second attachments or rotor fingers 9b having a second, approximately square cross section Qb and a side length sb. The rotor fingers 9a, 9b each have a centrally arranged receptacle 12. The receptacle 12 is corresponding to the cross section of the mounting rods eleventh formed so that the rotor fingers 9a, 9b can be easily plugged and fixed to the mounting rods 11.

Due to the different cross sections Qa, Qb of the rotor fingers 9a, 9b, each with different side lengths s-a, s-b, different minimum radial distances Ra, Rb between the rotor fingers 9a, 9b and the result

Separating sieve 6.

The first rotor fingers 9a have a first cross section Qa with a first side length s-a. This results in a first minimum radial clearance Ra between a first rotor finger 9a mounted on the fixing rod 11 and the separating screen 6. The second rotor fingers 9b have a second cross section Qb with a second side length s-b. Since the second side length s-b is greater than the first side length s-a, it follows that the second cross-section Qb is larger than the first cross-section Qa. This results in a second minimum radial distance Rb, which is less than the first minimum described above, between a second rotor finger 9b mounted on the fastening rod 11 and the separating screen 6

Radial distance Ra.

By using different rotor fingers 9a, 9b with different sized cross sections 9a, 9b, the minimum radial distance R between the respective rotor finger 9 and the separating screen 6 can thus be changed and adapted to the respective product or to the grinding media used in order to achieve the desired flow behavior and thus optimize the classifying effect.

The disadvantage is that different rotor fingers 9a, 9b with different cross-sections Qa, Qb must be kept as exchangeable format parts.

Figures 5 to 8 each show a plan view of a support plate

or rotor disk 8 of a separating device with third attachments or rotor fingers 9c arranged thereon with a third cross section Qc in different arrangements or position positions or rotational positions D1 to D4. The rotor fingers 9c have a rectangular cross section Qc with different side lengths s1 and s2. That is, the rotor fingers 9c have in particular no square cross section as a special case of a rectangle. The receptacle 12 is decentralized to the center Mc of the cross section Qc of

Rotor finger 9c arranged so that each have different radial distances between the receptacle 12 and the respective sides s1, s2 of the rectangular

Cross section Qc are formed. Depending on which orientation or rotational position D1, D2, D3,

D4 of the rotor finger 9c is placed on the mounting rod 1 1, there are different minimum radial distances Rc1, Rc2, Rc3, Rc4 between the

Rotor finger 9c and the separation screen. 6

In this first embodiment of the invention becomes a square

Rotor fingers according to the prior art (see Figures 3 and 4) extended on the screen side facing, so that a rectangular cross section Qc arises. By the extension of the rotor finger 9 c to the separating screen 6 out of

Radial distance Rc1 between the rotor finger 9c and separating screen 6 is reduced so that an improved cleaning of the separating screen 6 is ensured. According to one embodiment of the invention, the receptacle 12 may be formed such that the minimum radial distances Rc2 and Rc4 formed each have the same amount. According to a further embodiment, the receptacle 12 may be formed such that the minimum radial distances Rc2, Rc3 and Rc4 formed each have the same amount and only the minimum radial distance Rc1 in the first rotational position D1 clearly differs.

Figures 9 and 10 each show a plan view of a support plate

or rotor disk 8 of a separating device arranged thereon fourth essays or rotor fingers 9d with a fourth cross-section Qd in different arrangements or position positions or rotational positions D1 and D2. The rotor fingers 9c have a rectangular cross section Qc with different side lengths s1 and s2. That is, the rotor fingers 9d in particular have no square cross section as a special case of a rectangle. The receptacle 12 is central to the center Md of the cross section Qd of

Rotorfingers 9d arranged so that each equal distances between the

Receiving 12 and the two sides s1 and the two sides s2 of the rectangular cross section Qd are formed. Thus it follows that a rotor finger 9d can be arranged in two differing rotational positions D1 and D2 with different minimum radial distances Rd1 and Rd2.

Depending on the orientation or rotational position D1 or D2 of the rotor finger 9d is placed on the mounting rod 11, resulting in different minimum radial distances Rd1 or Rd2 between the rotor finger 9d and the separating screen. 6

In this embodiment, the side s1 or s2 facing the separation screen 6 can be replaced by rotating the rotor finger 9d by 180 degrees when it is worn. Thus, the entire rotor finger 9d need not be replaced and replaced with every wear.

Figures 11 to 14 each show a plan view of a support plate

or rotor disk 8 of a separating device with fifth attachments or rotor fingers 9e arranged thereon with a fifth cross section Qe in different arrangements or position positions or rotational positions D1 to D4. The rotor fingers 9e have a cross section Qe in the form of a

Dragon quadrilaterals on, in particular with two pairs of equally long adjacent sides with the different side lengths s1 and s2. The receptacle 12 is arranged in the illustrated embodiment, centrally to the intersection of the diagonal Me of the cross section Qe of the rotor finger 9e. The rotor finger 9e can in four different rotational positions D1 to D4 on the

Fixing rod 11 are arranged, each resulting in different minimum radial distances Re1, Re2, Re3, Re4 between the rotor finger 9e and the separating screen 6.

By using a rotor finger with a comparable cross section Qe, in which the receptacle 12 is formed decentralized to the intersection of the diagonals and / or arranged in a rotated orientation, there are a variety of other possible variations.

In the embodiment illustrated in FIGS. 11 to 14, the rotor fingers 9e have the shape of a kite quadrangle in cross section Qe, that is to say they show, in cross section Qe, two pairs of equally long, adjacent sides s1 and s2. where the diagonals halve each other and the lengths of s1 and s2 are different. In this embodiment, for example, according to FIG. 11 or FIG. 12, the longer sides s1 of the kite quadrilateral in the direction of the

Separating sieve 6 mounted. This corresponds to the rotational positions D1 and D2. Due to the shape of the kite quadrangle, a kind of slider, which however does not touch the separating sieve 6, thus arises above the separating sieve 6. At the top of the rotor finger 9e part of the Mahlkörper- product mixture is derived and returned from the separating screen 6 back into the grinding chamber. At the intermediate space Z formed between the rotor finger 9e and the separating screen 6, in contrast to the prior art, increased flows occur, through which impurities are fluidized and detached on the separating screen 6.

Depending on the orientation or rotational position D1, D2, D3, D4 of the rotor finger 9e is placed on the mounting rod 11, resulting in different minimum radial distances Re1, Re2, Re3, Re4 between the rotor finger 9e and the separation screen. 6

According to a further, not shown embodiment, the rotor fingers of this embodiment are designed such that the cross section represents a crooked dragon, in which the longer, the separating screen facing sides have different lengths. Thus it is possible to cover different cleaning requirements. These cleaning requirements may vary with different products and / or grinding media.

When arranging the rotor fingers 9 on the rotor disk 8, attention must always be paid to a balanced arrangement and / or alignment of the rotor fingers 9 in the rotor cage. By this is meant that, for example, in an even number of rotor fingers, at least two opposing rotor fingers must be provided with an enlargement / expansion. Because the cage with high

Rotation speeds is moved, otherwise creates an imbalance, which can greatly affect the function of the Klassierrotors. If the imbalance of the rotor cage is too large, it may even lead to destruction of the separating screen, if this is struck or penetrated by the protruding parts. The invention has been described with reference to a preferred embodiment. However, it will be apparent to those skilled in the art that modifications or changes may be made to the invention without departing from the scope of the following claims.

LIST OF REFERENCE NUMBERS

1 classifying rotor

2 wave

3 stirrer shaft

4 product outlet

5 separating device

6 separating sieve

7 rotor cage

8 rotor disk

9 rotor fingers

10 fixing unit

1 1 mounting rod

12 recording

D rotational position

M center point or intersection of the diagonals

Q cross section

R Radial distance / radial distance

s side length

Z space

Claims

claims

1. separating device (5) for classifying product mixtures from at least two different constituents, the separating device (5) comprising:

a shaft (3);

- A stationary arranged sieve unit (6), which at least particles

at least one constituent of the product mixture up to one

certain diameter can happen, as well

at least one classifying rotor (1) rotatably mounted on the shaft (3)

seated support plate (8) and one or more mechanically to the

Support plate (8) has coupled attachments (9) to influence a flow behavior of the product mixture in the region of the sieve unit (6), wherein

- The one or more essays (9) in different position positions

relative to the rotating shaft (3) on the support plate (8) are fixable such that depending on the respective position positions different

Flow behavior of the product mixture in the region of the sieve unit (6) are effected.

2. Separating device (5) according to claim 1, wherein the support plate (8) comprises a plurality of in a defined, each same radial distance (R) to the center of the support plate (8) arranged fixing means, wherein adjacent fixing means (1 1) in a respective are arranged at equal angles spaced, wherein the essays (9) corresponding to the fixing means (11) formed

Fastening means (10, 11) and wherein the attachments (9) on the

Fixing means (10, 11) are fixed to the fixing means (11).

3. Separating device (5) according to claim 2, wherein the attachments (9) to the fixed by the fixing (11) fixed positions in different position positions, in particular in at least two different rotational positions (D1, D2), can be fixed, wherein a first minimum radial distance (R) between the articles (9) and the sieve unit (6) in a first position

or first rotational position (D1) is different from a second minimum radial distance (R) between the articles (9) and the sieve unit (6) in a second position or second rotational position (D2).

4. Separating device (5) according to claim 3, wherein all the attachments (9) in the same

Position position or rotational position are arranged so that all attachments (9) have the same minimum radial distance (R) to the screen unit (6).

5. Separating device (5) according to claim 3, wherein the attachments (9) are arranged alternately in a first rotational position and in a second rotational position, so that the attachments (9) alternately a first minimum radial distance (R) and a second minimum radial distance ( R) to the screening unit (6) or wherein a first part of the attachments (9) are arranged in a first rotational position and a second, remaining part of the attachments (9) in a second rotational position, so that the first part of the attachments (9) a first minimum radial distance and the second part of the attachments (9) have a second minimum radial distance from the screening unit (6).

6. Separating device (5) according to one of claims 1 to 5, wherein the attachments (9) are rod-shaped and have a continuous rectangular cross section (Q) or a continuous cross-section (Q) in the form of a rhombus or in the form of a kite quadrangle.

7. Separating device (5) according to claim 6, wherein the fastening means (10, 11) centered in the center of the cross section (Q) of the attachment (9) is formed or wherein the fastening means (10, 11) decentralized to the center (M) of the

Cross-section (Q) of the attachment (9) is formed.

8. Agitator ball mill comprising a cylindrical grinding container having a Mahlguteinlass and a Mahlgutauslass (4), wherein in the grinding container, a stirring shaft (3) is arranged with stirring elements, with a front of

Mahlgutauslass (4) arranged separating device (5), the separating device (5) comprising

- A stationary arranged sieve unit (6), which at least particles of

at least one component of the product mixture up to one

certain diameter can happen as well

at least one classifying rotor (1) having a support plate (8) seated on the stirrer shaft (3) of the agitator ball mill and one or more attachments (9) mechanically coupled to the support plate (8) to control flow behavior of the product mixture in the region of Sieve unit (6) to influence, where

- The one or more essays (9) in different position positions

relative to the rotating agitator shaft (3) on the support plate (8) are fixable such that depending on the respective position positions different flow behavior of the product mixture in the region of the sieve unit (6) are effected.

9. Agitator ball mill according to claim 8, wherein the agitator ball mill comprises a separating device (5) according to one of claims 1 to 7.

10. agitator ball mill according to claim 8 or 9, wherein the sieve unit (6) has a cylindrical shape and wherein a longitudinal axis of the sieve unit (6) is arranged coaxially to the longitudinal axis of the agitator shaft (3).

11. agitator ball mill according to claim 10, wherein the center of the support plate (8) of the separating device (5) on the longitudinal axis of the agitator shaft (3) and the

Extension of the longitudinal axis of the screening unit (6) is arranged.

12. A method for classifying product mixtures by means of a separating device (5) with a stationary screening unit (6), a non-rotatably mounted on a shaft (3) supporting plate, wherein the support plate (8) or more mechanically coupled to the support plate (8) essays ( 9), wherein

Position positions of the attachments (9) on the support plate (8) can be set differently in order to change the flow behavior of the product mixture in the region of the sieve unit (6) and to set a desired Klassierwirkung.

13. The method of claim 12, wherein minimum distances between the articles (9) and a center of the support plate (8) depending on the desired

Flow behavior of the product mixture can be adjusted.

14. The method of claim 12 for adjusting the minimum distances between the articles (9) of a separating device (5) and a sieve unit (6) of the separating device (5) according to one of claims 1 to 7 for setting the desired Klassierwirkung.

15. The method of claim 12 for adjusting the minimum distances between the articles (9) of a separation device (5) and the sieve unit (6) of a stirred ball mill according to one of claims 8 to 11 for setting the desired Klassierwirkung.