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This article introduces the operating principle of 440t self-made oil press and presents the methods of resolution after having analyzed the serious noise problem in the adjustment process. In this paper, we propose to choose a high flow capacity overflow valve to replace the two same type overflow valves; to make far distance between the fluid influx site and outlet of pumps; to install a standpipe at the return line entry of overflow valve; to adapt low noise overflow valve. The noise is obviously lower than the past after the modification and the system is operated normal.

The Research Of Design and Modify Optimization Of 440t Self-made Horizontal Type Oil Press Hydraulic System