Comparison of Three Hydraulic Unloading Schemes for a Screw Press

Shao Qiu Cai; Xu Hong Pan; Feng Nian Li; Li Li Peng

doi:10.4028/www.scientific.net/AMR.418-420.1717

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Comparison of Three Hydraulic Unloading Schemes for a Screw Press

Abstract:

The transient time of the clutch disengagement is of key importance, as far as controlling performance of clutch screw presses is concerned. Therefore the hydraulic unloading of the clutch for a screw press has been analyzed, by which three schemes of poppets were compared based on calculation and simulation. Thereafter we found it is the widely used mode of ‘pilot-main poppet valve’ that had much advantage. At the same time the paper can provide an analysis method and be as the instantiation references for the design of such systems.