METHOD FOR OPERATING A HIGH-DENSITY SOLIDS PUMP AND HIGH-DENSITY SOLIDS PUMP

摘要

The invention relates to a method for operating a high-density solids pump (1), - the high-density solids pump (1) comprising: - a high-density solids delivery system (2), the high-density solids delivery system (2) being designed to deliver high-density solid matter (DS) with a delivery volume flow (QF) that can be variably adjusted, and – a hydraulic drive system (3), the hydraulic drive system (3) for driving the high-density solids delivery system (2) having: - a hydraulic circuit (4) having a hydraulic fluid (HF), - a first drive pump (5) which can be variably operated, and – a second drive pump (7) which can be variably operated, - the first drive pump (5) being designed for variable operation with at least one variably adjustable first pump parameter (P5) and the second drive pump (7) being designed for variable operation, independent of the first pump parameter (P5), with a second variably adjustable pump parameter (P7) for generating a variably adjustable total drive volume flow (QA) of the hydraulic fluid (HF) in the hydraulic circuit (4), - the method comprising the following steps: - determining a total drive volume flow target value (QAS) for the total drive volume flow (QA), - determining a first parameter target value (P5S) for the first pump parameter (P5) and a second parameter target value (P7S) for the second pump parameter (P7) dependent on the total drive volume flow target value (QAS) determined, the first parameter target value (P5S) and the second parameter target volume (P7S) differing from each other if the total drive volume flow target value (QAS) determined is in at least one total drive volume flow target value range (QASB1, QASB2, QASB3, QASB1') from a set (0, QASB1, QASB2, QASB3, QASB4, QASB1', QASB2', QASB3') of possible total drive volume flow target values (QAS), and – delivering the high-density solids (DS) with the delivery volume flow (QF) with a delivery volume flow target value (QFS) by generating the total drive volume flow (QA) with the determined total drive volume flow target value (QAS) by adjusting the first pump parameter (P5) to the first parameter target value (P5S) determined and the second pump parameter (P7) to the second parameter target value (P7S) determined.