Method for operating a pulper for producing a suspension, in particular a fibrous suspension
AssigneeVoith Patent GmbH
InventorsWolfgang Müller, Pantelis Zafeiropoulos
Life of this patent
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Abstract
A method for operating a screening device for cleaning a fibrous suspension includes the steps of: providing that the screening device includes a housing, a rotor arranged in the housing, and a screen; feeding the fibrous suspension and a rinsing water to the screening device; passing a portion of the fibrous suspension through the screen; discharging the portion of the fibrous suspension passing through the screen via an accepted stock discharge; and regulating, depending on a power consumption of a rotor drive, at least one of an inflow into the screening device and a cycle duration.
Claims18
A method for operating a screening device for cleaning a fibrous suspension, the method comprising the steps of:
- providing that the screening device includes a housing, a rotor arranged in the housing, and a screen;
- feeding the fibrous suspension and a rinsing water to the screening device;
- passing a portion of the fibrous suspension through the screen;
- discharging the portion of the fibrous suspension passing through the screen via an accepted stock discharge;
- and
- regulating, depending on a power consumption of a rotor drive, at least one of an inflow into the screening device and a cycle duration.
A method for operating a system, the method comprising the steps of:
- providing that the system includes a first screening device, a second screening device, and a pulper, the first screening device configured for being cyclically operated and thus for being operated in a plurality of cycles, the second screening device configured for being cyclically operated and thus for being operated in a plurality of cycles, the second screening device being arranged in parallel to the first screening device;
- and
- coordinating the plurality of cycles of the first screening device and the plurality of cycles of the second screening device with each other for utilizing at least one peripheral equipment of a line of the system, in that at least one of (a) at least one of a plurality of rinse cycles is at least one of (i) extended and (ii) shortened from a plurality of currently ongoing sequences and (b) at least a throughput cycle is shortened.
A method for operating a system, the method comprising the steps of:
- providing that the system includes a pulper and a screening device, the method including a first method for operating the screening device for cleaning a fibrous suspension, the first method including the steps of:
- providing that the screening device includes a housing, a rotor arranged in the housing, and a screen;
- feeding the fibrous suspension and a rinsing water to the screening device;
- passing a portion of the fibrous suspension through the screen;
- discharging the portion of the fibrous suspension passing through the screen via an accepted stock discharge;
- and
- regulating, depending on a power consumption of a rotor drive, at least one of an inflow into the screening device and a cycle duration;
- and
- returning the fibrous suspension to the pulper.
A system including a pulper, the system comprising:
- at least one screening device;
- and
- a control unit, which is configured for carrying out a method for operating the at least one screening device for cleaning a fibrous suspension, the method including the steps of:
- providing that the at least one screening device includes a housing, a rotor arranged in the housing, and a screen;
- feeding the fibrous suspension and a rinsing water to the at least one screening device;
- passing a portion of the fibrous suspension through the screen;
- discharging the portion of the fibrous suspension passing through the screen via an accepted stock discharge;
- and
- regulating, depending on a power consumption of a rotor drive, at least one of an inflow into the at least one screening device and a cycle duration;
- an infeed for a rinsing water to the at least one screening device;
- and
- a control valve, which is arranged in the infeed for the rinsing water to the at least one screening device.
Dependencies are inferred from the claim text.