UNIVERSAL HYDRAULIC FILTER

The utility model relates to a universal hydraulic element, belonging to a resonance type hydraulic filter which is manufactured by making use of compressibility and inertia, which is used for the pressure pulsation of an attenuation hydraulic system. The natural frequency of the filter is changed through the regulation of the liquid inductance of vibratory liquid to make the natural frequency of the filter coincide with the pump flow pulsation frequency, and the pressure pulsation of the system is reduced. The utility model is provided with special oil path, which can automatically remove the aggregated air of the filter cavity to perpetuate stable operation of the filter and ensure wave-filtering effect.