Agitator ball mill

Abstract

An agitator ball mill with a fluid circuit, which includes a grinding container and a casing container disposed around the latter uniformly spaced apart axially with a cavity formed between the containers. The fluid circuit is led at at least one flange through at least one flange lead-through introduced there, wherein a first opening of the at least one flange lead-through is constituted in a side wall of the corresponding flange lying orthogonal to the outer surface of the casing container.

Claims

1. An agitator ball mill with a fluid circuit comprising, a machine housing, a grinding container, and a casing container having an outer surface disposed around the grinding container in a radial direction, wherein the casing container and the grinding container are disposed coaxial and radially spaced apart such that a cavity is formed between the two containers, wherein the casing container and the grinding container are fixed at a proximal axial end to a housing-side flange lying adjacent to the machine housing or to a mounting flange disposed in the machine housing and at a distal axial end to a bottom flange located remote from the machine housing, wherein at least one of the flanges comprises a flange lead-through configured to guide fluid to or from the cavity, and wherein the flange lead-through comprises a first opening and a second opening, and wherein the first opening of the flange lead-through is disposed on a side wall of the respective flange, the first opening being arranged orthogonal to an axial direction of the cavity, and wherein a flange line, located outside the casing container, connects the housing side flange or the mounting flange to the bottom flange.

2. The agitator ball mill according to claim 1, wherein: the flange lead-through is a cavity channel, wherein the second opening is disposed at a transition region between the respective flange and the cavity; or the flange lead-through is a flange channel, wherein the second opening is located on the side of the respective flange lying opposite the first opening of the respective flange lead-through.

3. The agitator ball mill according to claim 2, wherein the housing-side flange comprises at least one cavity channel and/or at least one flange channel.

4. The agitator ball mill according to claim 3, wherein the bottom flange comprises at least one cavity channel and/or at least one flange channel.

5. The agitator ball mill according to claim 4, wherein the openings of the flange lead-through constituted as the cavity channel and/or the flange channel in the housing-side flange and the bottom flange are connected to one another by the flange line, said openings being disposed in the respective side wall and in each case facing one another.

6. The agitator ball mill according to claim 5, wherein the flange line is constituted as a closed pipeline.

7. The agitator ball mill according to claim 5, wherein the flange line is a casing line fixed to the outer surface of the casing container, wherein a part of the outer surface of casing container is also part of the casing line.

8. A method for conveying a fluid in an agitator ball mill with a fluid circuit, wherein the agitator ball mill comprises a machine housing, a grinding container and a casing container having an outer surface disposed around the grinding container in a radial direction, wherein the casing container and the grinding container are disposed coaxial and radially spaced apart such that a cavity is formed between the two containers, wherein the casing container and the grinding container are fixed at a proximal end to a housing-side flange lying adjacent to the machine housing or to a mounting flange disposed in the machine housing and at a distal end to a bottom flange located remote from the machine housing, wherein at least one of the flanges comprises a flange lead-through configured to guide fluid to or from the cavity, and wherein the flange lead-through comprises a first opening and a second opening, and wherein the first opening of the flange lead-through is disposed on a side wall of the respective flange, the first opening being arranged orthogonal to the outer surface, and wherein a flange line, located outside the casing container, connects the housing side flange or the mounting flange to the bottom flange; and wherein the fluid flow is conveyed from the flange lead-through into the flange line and to the cavity.

9. The method according to claim 8, wherein a first fluid can be displaced from the fluid circuit by supplying a further fluid different from the first fluid.

10. A method for conveying a fluid in an agitator ball mill comprising: guiding a fluid into a flange lead-through, the flange lead-through being disposed through a flange connecting a grinding container and a casing container adjacent to or opposite of a machine housing, leading the fluid, via flange line outside the cavity, to a cavity, the cavity being formed by an outer surface of the grinding container and an inner surface of the casing container, such that the grinding container and the casing container are radially spaced apart, wherein the flange lead-through comprises a first opening and a second opening, and wherein the first opening of the flange lead-through is disposed on a side wall of the respective flange, the first opening being arranged orthogonal to an axial direction of the cavity.

11. The method for conveying a fluid in an agitator ball mill of claim 10, wherein the flange line is welded or soldered to the outer surface of the casing container such that the casing container is a bottom surface of the flange line.

12. The agitator ball mill according to claim 7 wherein the casing line is welded or soldered to the casing container.

13. An agitator ball mill with a fluid circuit comprising: a grinding container; a machine housing attached to said grinding container at a proximal end via a first flange; a casing container disposed around the grinding container, such that a cavity is arranged radially between the grinding container and the casing container; wherein the first flange comprises a first flange lead-through which guides fluid to the machine housing from the cavity or to the cavity from the machine housing; wherein the fluid flow at an opening of the first flange lead-through is substantially parallel to an axial direction of the cavity.

14. The agitator ball mill of claim 13, further comprising a second flange which connects a distal end of the grinding container and a distal end of the casing container.

15. The agitator ball mill of claim 14, further comprising a flange line disposed along an exterior surface of the casing container, wherein the flange line guides fluid in a direction from the first flange to the second flange; and a second flange lead-though in the second flange providing an opening from the flange line to the cavity.

16. The agitator ball mill of claim 15, wherein the flange line guides said fluid in a direction parallel to a longitudinal axis of the casing container before said fluid passes through said second flange lead-through.

17. The agitator ball mill of claim 13, further comprising a flange line located outside the casing container which guides fluid from the first flange distally to an opening in the casing container to the cavity.

18. The agitator ball mill of claim 13, wherein the first flange comprises a second flange lead-through wherein the first flange lead-through guides fluid to the cavity from the machine housing and the second flange lead-through guides fluid to the machine housing from the cavity.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Examples of embodiment of the invention and its advantages are explained below in greater detail with the aid of the appended figures. The size ratios of the individual elements with respect to one another in the figures do not always correspond to the actual size ratios, since some forms are represented simplified and other forms are represented enlarged in relation to other elements for the sake of better illustration.

(2) FIG. 1 shows a diagrammatic view of a longitudinal section of an agitator ball mill known from the prior art.

(3) FIG. 2 shows a very simplified diagrammatic view of a longitudinal section of a first embodiment of an agitator ball mill according to the invention.

(4) FIG. 3 shows a very simplified diagrammatic view of a longitudinal section of a further embodiment of an agitator ball mill according to the invention.

(5) FIG. 4 shows a very simplified diagrammatic view of a cross-section of a grinding container and casing container of the agitator ball mill according to the invention with a casing line disposed thereon.

(6) Identical reference numbers are used for identical or identically acting elements of the invention. Furthermore, for the sake of a clearer view, only reference numbers are represented in the individual figures that are required for the description of the respective figure. The represented embodiments only represent examples as to how the device according to the invention can be constituted and do not represent a conclusive limitation.

DETAILED DESCRIPTION

(7) FIG. 1 shows a diagrammatic view of a longitudinal section of an agitator ball mill known from the prior art. Agitator ball mill 10 comprises a grinding container 2, in which an agitator shaft 30 is disposed centrally. Grinding discs 34 are disposed on agitator shaft 30, said grinding discs providing the motion of the grinding stock in grinding container 2. The grinding stock is supplied via grinding stock inlet 32 of agitator ball mill 10, i.e. to grinding chamber 29, and is conveyed in the direction of grinding stock outlet 33 by the grinding bodies set into motion by agitator shaft 30 and its grinding discs 34. A separating device 31 is disposed in front of grinding stock outlet 33, said separating device separating the grinding bodies from the finish-ground grinding stock.

(8) Grinding container 2 is surrounded by a casing container 1, wherein the two containers 1, 2 are spaced apart from one another in the radial direction. As a result of this spacing, a cavity 26 is formed between grinding container 2 and casing container 1, which cavity can serve to accommodate a fluid, usually a cooling fluid. Said cavity is closed off by flanges 16 and 17 provided at both sides of containers 1, 2 in the axial direction and fixed to the latter, wherein housing-side flange 16 is disposed on machine housing 3, whilst bottom flange 17 is located on the side lying opposite containers 1, 2, at which side grinding stock outlet 33 is located. A supporting element 27 is fixed to bottom flange 17, said supporting element supporting grinding stock outlet 33 and closing off grinding chamber 29 to the exterior.

(9) An inlet opening 14 introduced into the wall of casing container 1 is used for supplying the fluid into cavity 26, through which inlet opening the fluid can enter into cavity 26 in the flow direction or flow direction S. Outlet opening 15 lies diagonally opposite inlet opening 14 and is also disposed in the wall of casing container 1, through which outlet opening the fluid can leave cavity 26 again in flow direction S. Both inlet opening 14 and outlet opening 15 are provided with connection elements 11, to which lines for the fluid supply or discharge can be fitted.

(10) FIG. 2 shows a diagrammatic longitudinal section through an embodiment of an agitator ball mill according to the invention with a fluid circuit.

(11) Casing container 1 and grinding container 2 are connected to a housing-side flange 16 and a bottom flange 17, wherein housing-side flange 16 is fixed to a machine housing 3, more precisely to a mounting flange 4 provided there. The embodiment of an agitator ball mill shown in FIG. 2 shows, with the aid of three variants A, B, C of a flange lead-through 36a, 36b, 36c, how a fluid, which is flowing in flow direction S, is conveyed from inlet opening 14 in mounting flange 4 to an outlet opening 15 also present in mounting flange 4.

(12) In variant A, the fluid enters through first opening 39a of flange channel 35 into housing-side flange 16 and is conveyed onward through second opening 40a of flange channel 35, which is introduced in side wall 41 of housing-side flange 16 facing grinding stock outlet 33 into flange line 20. Flange line 20, which is constituted here as pipeline 21 constituted spaced apart from casing container 1, conveys the fluid from housing-side flange 16 to bottom flange 17, wherein the fluid enters into bottom flange 17 via first opening 39b of flange lead-through 36b constituted as a cavity channel 37.

(13) Cavity channel 37 in bottom flange 17 according to variant B is constituted such that both first opening 39b, through which the fluid enters into bottom flange 17, and second opening 40b, through which the fluid exits again from cavity channel 37 of bottom flange 17, are disposed on the same side wall 42 of bottom flange 17 facing machine housing 3, wherein second opening 40b lies at the level of cavity 26 and the fluid can transfer through said second opening into cavity 26.

(14) Subsequently, the fluid in cavity 26 between casing container 1 and grinding container 2 flows onward in the direction of flange lead-through 36c, characterised as variant C of flange lead-through 36 and constituted as second cavity channel 38, to housing-side flange 16, enters there through first opening 39c of second cavity channel 38, which is introduced into side wall 41 of housing-side flange 16 facing away from machine housing 3, into said second cavity channel and finally exits again out of the agitator ball mill through second opening 40c of second cavity channel 38, which is introduced into side wall 43 of front flange 16 facing machine housing 3, and an opening in mounting flange 4 corresponding to second cavity channel 38.

(15) FIG. 3 represents further embodiments of flange lead-throughs 36d, 36e, 36f on the basis of a diagrammatic longitudinal cross-section section similar to that in FIG. 2. For the sake of simplification, the representation of a mounting flange 4, as is shown in FIG. 2, is dispensed with in FIG. 3.

(16) The flange lead-through according to variant D largely corresponds to variant A known from FIG. 2, but lies closer to casing container 1, i.e. inlet opening 14 of housing-side flange 16 is also closer to casing container 1. This embodiment may be necessary when, as represented in FIG. 3, flange line 20 is constituted as a casing line 22, wherein a part of the outer surface of casing container 1 also forms part of casing line 22, so that casing container 1 and casing line 22 form a common wall 24, at which the fluid is conveyed along from housing-side flange 16 to bottom flange 17.

(17) Variant E of a flange lead-through 36 on bottom flange 17 can be constituted for example as a bore 28 introduced into side wall 42 facing machine housing 3. Since casing container 1 or common wall 24 does not project into bore 28 at the level of side wall 42, the fluid flowing in flow direction S in bore 28 is guided around common wall 24 into cavity 26.

(18) The fluid can finally exit from agitator ball mill 10 through flange lead-through 36f referred to as variant F or outlet opening 15. The flange lead-through according to variant F is constituted as a cavity channel 38, wherein first opening 39f of flange lead-through 36f introduced into side wall 41 facing away from machine housing 3 creates a connection to cavity 26.

(19) It is self-evident that flow direction S described in FIGS. 2 and 3 serves only for clarification and can also run in the opposite direction. It therefore goes without saying that the designations first opening 39 and second opening 40 are primarily of an explanatory nature and are to be understood as being dependent on a flow direction or suchlike and not in absolute terms.

(20) Finally, FIG. 4 shows a diagrammatic cross-section through the container of an agitator ball mill, which is intended to serve to explain an embodiment of a flange line. Grinding container 2 disposed in casing container 1 is constituted uniformly spaced apart from the latter radially, the two containers 1, 2 thereby enclosing cavity 26. A flange line 20 is fixed on casing container 1, which flange line is constituted as casing line 22 in the representation of FIG. 4. Casing line 22 shown in the example has a roughly semicircular cross-section, is located with the respective ends of the arc of circle on casing container 1 and is fixedly connected to the latter at each side by connections 19 and 19. Various fixing methods are conceivable for connection 19, for example gluing, soldering or suchlike; a weld joint is however regarded as preferable.

(21) As shown in FIG. 4, the part of casing container 1 located between connections 19 and 19 is at the same time part of casing line 22, thus representing a common wall 24 of casing container 1 and casing line 22. A fluid flowing through casing line 22 thus flows along casing container 1.

(22) In this connection, it should not be overlooked that the shape of casing line 22 does not necessarily have to be semicircular as represented in FIG. 4, but can also have another shape and for example have an elliptical or angular base shape. It is of primary importance in this connection that casing container 1 and casing line 22 have a common wall 24 and casing line 22 is fixed to the casing container by two connections 19, 19, since this type of fixing has a greater stability than for example when welding a flange line 20 constituted as a pipeline, which can be perceived as a connection of two pipes of differing diameter. The casing line according to the one known from FIG. 4 has, in contrast with the latter connection, a much better mechanical stability.

(23) The invention has been described by reference to a preferred embodiment. A person skilled in the art can however imagine that modifications or changes to the invention can be made without thereby departing from the scope of protection of the following claims.