Hangzhou Jianhua Filter PressHydraulic compression of active box filter press: The hydraulic compression mechanism consists of a hydraulic station, an oil cylinder, a piston, a piston rod, and a layout of the Haflan card hydraulic station where the piston rod is connected to the compression plate. The layout includes a motor, an oil pump, an overflow valve (pressure regulating), a directional valve, a pressure gauge, an oil circuit, and an oil tank. When the hydraulic compression machine is compressed, high-pressure oil is supplied by the hydraulic station, and the component chamber composed of the oil cylinder and piston is filled with oil. When the pressure is greater than the frictional resistance of the compression plate, the compression plate slowly presses the filter plate. When the compression force reaches the pressure value set by the overflow valve (indicated by the pressure gauge pointer), the filter plate, filter frame (plate frame type) or filter plate (box type) is compressed, and the overflow valve begins to unload. At this time, the power supply of the motor is blocked, and the compression action is completed. When it returns, the directional valve changes direction, and the pressure oil enters the rod chamber of the oil cylinder. When the oil pressure can overcome the frictional resistance of the compression plate, the compression plate begins to retreat. When hydraulic compression is used for active pressure maintenance, the compression force is controlled by an electric contact pressure gauge.