The ceramic brick press is a high-tech equipment integrating machinery, electricity, hydraulic pressure and automatic control, and it is also a high energy consumption device. The brick press is driven by a high-power asynchronous motor to drive the oil pump, and a plunger high-pressure oil pump is often used as a necessary part of the equipment. The hydraulic source can generate a certain pressure and a certain flow of hydraulic pressure, and complete each required action under the condition of automatic control. When the oil pump is turned on, the oil cylinder rapidly descends, low pressure pressurization, low pressure amplitude, medium pressure pressurization, high pressure pressurization, high pressure hold, slow rise, rapid rise and other actions, each action uses PC to control the switch of the solenoid valve, according to different Process to set low, medium and high pressure to meet the requirements of the product. In terms of oil circuit design, the motor drives the oil pump to provide constant flow and pressure at a constant speed. The actual action flow is far from reaching the maximum flow of the oil pump. The excess hydraulic oil flows back through the relief valve. This process is called high pressure section. flow. The high-pressure throttling efficiency is generally 30% to 50%, and the energy loss is as high as 40% to 60%. At the same time, due to the long-term full-speed circulation of the hydraulic oil, the violent friction with the hydraulic parts and mechanical parts will cause the oil temperature to be too high and the noise to be high, which will affect the life of the brick machine system.