Method and device for detaching an adhering charge from the inner side of a grinding pipe of a tube mill
AssigneeSiemens Aktiengesellschaft
InventorsDan Niculae Fodor, Andreas Procksch, Kurt Tischler
Life of this patent
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Abstract
In a method for detaching a frozen charge from an inner wall of a grinding tube of a tube mill, a motor of a drive system is operated in a first mode to rotate the grinding tube for grinding. In a second mode, the motor of the drive system is operated to remove the frozen charge from the inner wall of the grinding tube such that operation of the motor to effect a rotational movement of the grinding tube is repeatedly disturbed by a disturbance signal to cause a repeated disturbance within a variable time interval, with the time interval of the repeated disturbance being shortened.
Claims15
A method for detaching a frozen charge from an inner wall of a grinding tube of a tube mill, said method comprising:
- operating a motor of a drive system in a first mode to rotate the grinding tube for grinding:
- operating the motor of the drive system in a second mode for removing the frozen charge from the inner wall of the grinding tube such that operation of the motor to effect a rotational movement of the grinding tube is repeatedly disturbed by a disturbance signal to cause a repeated disturbance within a variable time interval;
- and
- shortening the time interval of the repeated disturbance.
A device for detaching a frozen charge from an inner wall of a grinding tube of a tube mill, said device comprising:
- a motor configured to operate in a first operating mode in which the motor causes a rotational movement of the grinding tube, and in a second operational mode in which the motor removes the frozen charge from the inner wall of the grinding tube;
- and
- a controller operably connected to the motor, said controller configured to generate during the second operational mode a disturbance signal to cause a repeated disturbance of the rotational movement of the grinding tube within a variable time interval that is increasingly shortened as the disturbance is repeated.
Dependencies are inferred from the claim text.