Long-service-life anti-locking high-temperature hard sealing one-way valve

The invention provides a long-service-life anti-locking high-temperature hard sealing one-way valve, and relates to the technical field of one-way valves. The long-service-life anti-locking high-temperature hard sealing one-way valve solves the technical problem that an existing one-way valve in the prior art is poor in use effect. The long-service-life anti-locking high-temperature hard sealing one-way valve comprises an integrated valve body and a valve element assembly, wherein the integrated valve body is internally provided with an inflow cavity, a valve element mounting cavity and an outflow cavity which sequentially communicate, and the valve element mounting cavity comprises a conical cavity; and the valve element assembly comprises a conical surface valve element, an elastic return element and a valve frame, the conical surface valve element is arranged in the conical cavity in a sliding mode, the valve frame is connected with the conical surface valve element, and the elastic return element is arran