Filter element for lubrication system of wind power gearbox

The utility model discloses a filter element for a lubrication system of a wind power gearbox, comprising filter cores, wherein the filter cores comprise a 5-mum filter core, a 10-mum filter core and a 25-mum filter core, and the filter cores are of a parallel structure; a bypass valve is arranged at the rear end of the 25-mum filter core; two pressure control valves are arranged at a filter head; and differential pressure signalling devices are arranged at the parallel ends of the filter cores, and continuous exhaust devices are arranged at the outlets of the parallel ends. The device gives consideration to the requirements of the lubrication system of the wind power gearbox on high accuracy and high permissible quantity of pollutants, effectively simplifies the lubrication system via the integration of the pressure control valve groups, and has the characteristics of being high in filter accuracy and low in cost.