The working medium used in hydraulic press is not only to transmit pressure, but also to ensure that the working parts of the machine work sensitively, reliably, with long service life and less leakage.
The principle of the hydraulic press is that the motor drives the hydraulic pump to produce pressure and drives the hydraulic cylinder to press down or top up to realize the function you need,
The hydraulic pump is the power source of the hydraulic system,
The force of the pump causes the hydraulic oil to enter the cylinder / piston through the hydraulic pipeline
Then there are several sets of matched seals in the cylinder / piston to keep the hydraulic oil from leaking.
The hydraulic oil is circulated in the oil tank by one-way valve to make the cylinder / piston cycle work. This is a simple hydraulic system.
Usually refers to the hydraulic pump and hydraulic motor, hydraulic pump and hydraulic motor are energy conversion devices in the hydraulic system, the difference is that the hydraulic pump converts the mechanical energy of the driving motor into the pressure energy of the oil, which is the power device in the hydraulic system, and the hydraulic motor is the Executive device in the hydraulic system. Convert the pressure energy of oil into mechanical energy
Most of the hydraulic pumps and hydraulic motors are reciprocal, that is to say, the input pressure oil, the hydraulic pump becomes a hydraulic motor, which can output speed and torque, but there are differences in structure.
The hydraulic pump and motor commonly used in the hydraulic system of hydraulic press are volume type, and their working principle is to absorb and press oil by using the change of sealed volume.
The hydraulic system of hydraulic press is composed of filter element pipeline and various valve bodies. There should be a hydraulic pump to provide pressure and an overflow valve to prevent the system pressure from being too high and unloading in time. The directional valve controls the flow direction of the hydraulic cylinder oil to control the expansion and contraction of the hydraulic cylinder.
In addition, there are many, such as pressure reducing valve and throttle valve, which are selected according to the work needs. To learn more, you can refer to the working principle and realization effect of various basic valve bodies, which will be more convenient to understand. Most of them are combination valves. It is very complicated to combine different valve bodies to achieve the effect. In fact, there are only two kinds of control, one is the opening of pressure control valve core, the other is the opening of electromagnetic magnetic force control valve core.