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AssigneeValment Corporation
InventorsJouko Hautala, Juhani Valli, Timo Vuorinen, Jorma Petäjistö
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The invention relates to a method for controlling a multi-step screening apparatus (1), the method comprising controlling other accept, reject and dilution flows in relation to the flow measured in the accept channel (7a) of the first screening step (3a). Thus a simpler control unit (9) can be used and accept of higher quality can be obtained than before. The invention further relates to an apparatus for controlling a multi-step screening apparatus (1), said apparatus comprising a control unit (9) arranged to measure the flows of all accept, reject and dilution water channels (7a-7c, 5a, 5b, 11a, 11b) and to adjust the flow of the other channels on the basis of the flow of the accept channel of the first step.
An apparatus for controlling a multi-step screening apparatus, said apparatus comprising a control unit arranged to measure flows of accept and reject channels of the screening apparatus by means of measuring devices provided in the channels, and to regulate accept and reject flows of the screening apparatus by means of regulating valves mounted in the channels, wherein the control unit is arranged to control the flows of other accept and reject channels in relation to the flow of the accept channel of the first step of the screening apparatus.
Dependencies are inferred from the claim text.