Special-shaped wire rod lubricating system with centralized oil supply function

The utility model relates to a special-shaped wire rod lubricating system with centralized oil supply. The lubricating system comprises a high-level oil tank, a low-level oil tank, an oil pumping pipe, an oil pumping pump, an oil supply pipeline, an oil return pipeline and a plurality of terminal lubricating units, each terminal lubricating unit comprises an oil outlet nozzle and an oil receiving disc, and the oil outlet nozzles and the oil receiving discs are arranged above and below steel to be lubricated respectively. The height of the oil outlet nozzle is lower than that of the bottom of the high-level oil tank; the height of the oil receiving disc is higher than that of the low-level oil tank; the bottom of the high-level oil tank is communicated with a plurality of oil outlet nozzles through an oil supply pipeline; the oil receiving disc is communicated with the top of the low-level oil tank through an oil return pipeline; an inlet of the oil-well pump communicates with the bottom of the low-level oil t