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        Introduction of hydraulic control system of four column hydraulic press
        Hits: 88  Time: 2020-09-23 14:56:31
         
        Generally, four column hydraulic press is composed of main engine, power system and hydraulic control system.
        Introduction of hydraulic control system:
        1. Oil tank level signal is an important state parameter of hydraulic system. Proper liquid level plays an important role in oil bubble, impurity precipitation and filtration, and oil temperature stability.
        2. There is no pressure signal in rod chamber of hydraulic cylinder. In addition, the working state and performance of the directional valve directly affect the pressure change of the hydraulic cylinder.
        3. Oil filter blockage signal, hydraulic machinery uses return oil filter. The switch signal provided by oil filter differential pressure relay is used to determine the state of oil filter and working medium.
        4. Oil temperature signal, oil temperature has a great impact on the performance of hydraulic system of four column hydraulic press. Generally, it is appropriate to control the pressure filter system below 60 ° C.
        5. Relief valve pressure sensor. In the hydraulic system of the four column hydraulic press, the relief valve can adjust the rated working pressure of the hydraulic actuator to ensure the normal operation of the system, and directly affect the working performance and safety of the hydraulic system of the whole hydraulic press.
        Wear or strain between plunger and cylinder hole, oil distribution plate or cylinder joint of four column hydraulic press, such as pump heating, will cause abnormal reaction, reflecting the control system problems. When the leakage increases, the leakage energy is converted into heat energy and heated. High oil temperature is also relatively common. With the increase of oil viscosity, the friction increases, and the friction heat increases the oil temperature.
         
         
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