Multistage screen sorting device
AssigneeVoith Patent GmbH
InventorThomas Jaschek
Life of this patent
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Abstract
A screen sorting device for cleaning a fibrous stock suspension includes: an inlet for the fibrous stock suspension; a first sorting stage, which includes a first accepts discharge; at least one second sorting stage, which includes a second accepts discharge; and a fill level detection way, which is configured for detecting an accumulation height in the at least one second sorting stage and is assigned to the at least one second sorting stage.
Claims15
A screen sorting device for cleaning a fibrous stock suspension, the screen sorting device comprising:
- an inlet for the fibrous stock suspension;
- a first sorting stage, which includes a first accepts discharge;
- at least one second sorting stage, which includes a second accepts discharge;
- a fill level detector, which is configured for detecting an accumulation height in the at least one second sorting stage and is assigned to the at least one second sorting stage;
- and
- an orifice plate, which is arranged between the first sorting stage and the at least one second sorting stage and includes a side facing the at least one second sorting stage, wherein the screen sorting device is configured such that a pressure acquisition for a detection of a prevailing pressure is provided on the side of the orifice plate facing the at least one second sorting stage.
A screen sorting device for cleaning a fibrous stock suspension, the screen sorting device comprising:
- an inlet for the fibrous stock suspension;
- a first sorting stage, which includes a first accepts discharge;
- at least one second sorting stage, which includes a second accepts discharge;
- a fill level detector, which is configured for detecting an accumulation height in the at least one second sorting stage and is assigned to the at least one second sorting stage;
- and
- a rinsing water inlet;
- and
- a screen, wherein the rinsing water inlet is provided for an inflow of a rinsing water for diluting the fibrous stock suspension entering the screen, wherein the rinsing water inlet includes a pressure sensor.
A method for operating a screen sorting device for cleaning a fibrous stock suspension, the method comprising the steps of:
- providing that the screen sorting device includes:
- an inlet for the fibrous stock suspension;
- a first sorting stage, which includes a first accepts discharge;
- at least one second sorting stage, which includes a second accepts discharge;
- and
- a fill level detector, which is configured for detecting an accumulation height in the at least one second sorting stage and is assigned to the at least one second sorting stage;
- assigning a control unit to the screen sorting device;
- controlling a supply of the fibrous stock suspension into the screen sorting device by the control unit;
- feeding data of a sensor assigned to the at least one second sorting stage to the control unit for the fill level detector;
- storing a desired fill level in the control unit and, in an event of a detected fill level falling below the desired fill level, increasing at least one of an inflow volume and an inflow pressure of the fibrous stock suspension entering the screen sorting device;
- and
- reducing, in an event of a detected high fill level exceeding the desired fill level which is stored, an inflow of the fibrous stock suspension that is incoming.
Dependencies are inferred from the claim text.