Rotary press and method for cleaning a rotary press

Inventors: Werner Runft (Winnenden, DE); Torsten Grass (Urbach, DE); Fabian Werner (Waiblingen, DE)

Assignee: Syntegon Technology GmbH

B30B15/0082 B08B3/02 B30B11/08

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Quick Facts

Patent No.: US 12703165
App. No.: 18/823,994
Granted: Aug 11, 2026
Kind: B2

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Abstract

A rotary press ( 10 ), in particular a rotary tablet press, includes a rotor ( 14 ) rotatable about an axis of rotation ( 12 ) and a cleaning device ( 16 ) for cleaning the rotary press ( 10 ). The cleaning device ( 16 ) includes at least one spray opening ( 18 ), in particular a plurality of spray openings ( 18 ), for spraying a cleaning agent ( 20 ). The cleaning device ( 16 ) is coupled to the rotor ( 14 ) and configured such that the spray opening ( 18 ) can be rotated about the axis of rotation ( 12 ) by rotating the rotor ( 14 ). A method for cleaning such a rotary press ( 10 ) is also described.

Claims (24)

1 . A rotary press ( 10 ) comprising: a rotor ( 14 ) rotatable about an axis of rotation ( 12 ), wherein the rotor comprises an upper tableting punch ( 30 ) and/or a lower tableting punch ( 31 ) and

a cleaning device ( 16 ) for cleaning the rotary press ( 10 ), wherein the cleaning device ( 16 ) comprises a spray opening ( 18 ) for spraying a cleaning agent ( 20 ), wherein the cleaning device ( 16 ) is coupled to the rotor ( 14 ) and configured such that the spray opening ( 18 ) can be rotated about the axis of rotation ( 12 ) by rotating the rotor ( 14 ).

2 . The rotary press ( 10 ) according to claim 1 , wherein a static spray nozzle ( 22 ) is arranged on the spray opening ( 18 ).

3 . The rotary press ( 10 ) according to claim 1 , wherein a rotary spray nozzle ( 24 ) is arranged on the spray opening ( 18 ).

4 . The rotary press ( 10 ) according to claim 1 , wherein the cleaning device ( 16 ) comprises an internal feed channel ( 26 , 27 , 29 ) for guiding the cleaning agent ( 20 ) to the spray opening ( 18 ), wherein the internal feed channel ( 26 , 27 , 29 ) is arranged at least in portions within the rotor ( 14 ).

5 . The rotary press ( 10 ) according to claim 4 , wherein the internal feed channel ( 26 , 27 , 29 ) is formed at least in the portions as a bore within the rotor ( 14 ).

6 . The rotary press ( 10 ) according to claim 1 , wherein the cleaning device ( 16 ) comprises an external feed channel ( 28 ) for guiding the cleaning agent ( 20 ) to the spray opening ( 18 ), wherein the external feed channel ( 28 ) is arranged at least in portions outside the rotor ( 14 ).

7 . The rotary press ( 10 ) according to claim 1 , wherein the cleaning device ( 16 ) comprises a cleaning punch ( 32 ), wherein the cleaning punch ( 32 ) is configured to be interchangeable with the lower tableting punch ( 31 ) and/or the upper tableting punch ( 30 ), wherein the spray opening ( 18 ) is arranged in or on the cleaning punch ( 32 ), wherein at least one channel ( 34 ) for guiding the cleaning agent ( 20 ) to the spray opening ( 18 ) is arranged within the cleaning punch ( 32 ).

8 . The rotary press ( 10 ) according to claim 1 , wherein the cleaning device ( 16 ) comprises a guide element ( 36 ), wherein the guide element ( 36 ) is configured to be fixable to the rotor ( 14 ), wherein the spray opening ( 18 ) is arranged in or on the guide element ( 36 ), wherein a guide channel ( 38 ) for guiding the cleaning agent ( 20 ) to the spray opening ( 18 ) is arranged within the guide element ( 36 ).

9 . The rotary press ( 10 ) according to claim 1 , wherein the cleaning device ( 16 ) comprises an inlet ( 40 ) for guiding the cleaning agent ( 20 ) into the rotor ( 14 ).

10 . The rotary press ( 10 ) according to claim 1 , wherein the cleaning device ( 16 ) comprises a pump ( 42 ) for pumping the cleaning agent ( 20 ).

11 . The rotary press ( 10 ) according to claim 1 , wherein the rotary press is a rotary tablet press.

12 . The rotary press ( 10 ) according to claim 1 , wherein the cleaning device ( 16 ) comprises a plurality of spray openings ( 18 ) as the spray opening ( 18 ).

13 . A method for cleaning a rotary press ( 10 ) according to claim 1 , comprising the steps of:

rotating the spray opening ( 18 ) about the axis of rotation ( 12 ) by rotating the rotor ( 14 );

spraying the cleaning agent ( 20 ) through the spray opening ( 18 ).

14 . The method according to claim 13 , further comprising the step of:

pumping the cleaning agent ( 20 ) in a circuit.

15 . The method according to claim 13 , further comprising the step of:

collecting and disposing of the sprayed cleaning agent ( 20 ) after spraying the cleaning agent ( 20 ) once through the spray opening ( 18 ).

16 . The method according to claim 13 , further comprising the step of:

guiding the cleaning agent ( 20 ) through an internal feed channel ( 26 , 27 , 29 ), an external feed channel ( 28 ), a channel ( 34 ) of a cleaning punch ( 32 ), and/or a guide channel ( 38 ) of a guide element.

17 . The method according to claim 13 , further comprising the step of:

closing the spray opening ( 18 ) and/or an internal feed channel ( 26 , 27 , 29 ).