Working principle of hydraulic press : (hydraulic baler, metal baler, scrap baler, scrap iron baler, metal briquetting machine, metal shearing machine, scrap cutting machine, scrap iron scissors machine, metal briquetting machine, metal shaving machine, Iron filing press, Longmen shearer)
Hydraulic presses use liquids to transfer pressure. The Pascal's law is followed when the liquid transfers pressure in a closed container. The hydraulic drive system of the hydraulic press consists of a power mechanism, a control mechanism, an actuator, an auxiliary mechanism, and a working medium.
a The power mechanism usually uses an oil pump as a power mechanism, which is generally a positive displacement oil pump. In order to meet the speed requirements of the actuator, an oil pump or multiple oil pumps are selected. Low pressure (oil pressure less than 2.5MP) gear pump; medium pressure (oil pressure less than 6.3MP) vane pump; high pressure (oil pressure less than 32.0MP) piston pump.
Hydraulic presses usually refer to hydraulic pumps and hydraulic motors. Hydraulic pumps and hydraulic motors are energy conversion devices in hydraulic systems. The difference is that hydraulic pumps convert the mechanical energy of the drive motor into the pressure energy of the hydraulic fluid and are the power devices in the hydraulic system. The hydraulic motor converts the pressure energy of the oil into mechanical energy and is an actuator in the hydraulic system.
The hydraulic pumps and hydraulic motors commonly used in the hydraulic system of hydraulic presses are volumetric type. Their working principle is to use the change of the sealed volume to suck and pressurize oil. From the working principle, most hydraulic pumps and hydraulic motors are reciprocal, that is, the input pressure oil, the hydraulic pump becomes a hydraulic motor, you can output the speed and torque, but in terms of structure, hydraulic pumps and hydraulic motors are still Some differences
