Anti-blocking high-pressure protection pressure limiting valve and engine oil pump

The invention provides an anti-blocking high-pressure protection pressure limiting valve. The anti-blocking high-pressure protection pressure limiting valve comprises a valve body, wherein the valve body is internally provided with a valve cavity; the valve cavity is internally provided with a valve element, a steel ball, a spring and a bowl-shaped plug in sequence from bottom to top; the valve body is provided with an opening A for leaking oil; the valve element is of a cylindrical structure with a lower end face; a through hole communicated with the opening A is formed in a side wall of the valve element; an opening C is formed in the middle of the lower end face of the valve element; the steel ball is mounted in the valve element and is in sealing matching with the opening C through an acting force of the spring; an opening P for feeding oil is formed below the valve element; and high-pressure oil acts on the valve element and the steel ball through the opening P. The invention also provides an engine oil