Lubricant supply device of high-capacity single-line centralized lubrication system

The invention provides a lubricant supply device of a high-capacity single-line centralized lubrication system. The lubricant supply device of the high-capacity single-line centralized lubrication system comprises a power assembly, an oil storage tank, a plunger pump, a liquid level sensor, an oil pressing disc assembly, a peephole, an air filter, a top cover, a base, an installation fixing deviceand a pressure relief device. A stirrer is arranged in the oil storage tank; one end of the stirrer is connected with the power assembly; the other end of the stirrer is connected with an eccentric shaft; the power assembly drives the stirrer to drive the eccentric shaft to rotate, and the rotating eccentric shaft drives the plunger pump to reciprocate; the pressure relief device is arranged on the outer side of the plunger pump and conducts pressure relief through outage of an electromagnetic valve; the oil pressing disc assembly is arranged in the oil storage tank through a low oil level assembly; a guide rod penet