High-temperature-resistant and high-pressure-resistant stirring intermediate container device and porous medium displacement experiment system

The invention discloses a high-temperature-resistant and high-pressure-resistant stirring intermediate container device and a porous medium displacement experiment system, wherein the high-temperature-resistant and high-pressure-resistant stirring intermediate container device comprises an intermediate container and a stirring mechanism; the intermediate container comprises a cylinder body, an upper end cover and a lower end cover; the upper end cover and the lower end cover are screwed and sealed with the cylinder body through threads, and the stirring mechanism is arranged in the intermediate container; axial through holes are formed in the upper end cover and the lower end cover; two-way valves are connected to the top of the upper end cover and the bottom of the lower end cover; the stirring mechanism is of a cylindrical structure, the outer diameter of the stirring mechanism is matched with the inner diameter of the cylinder body, the side face of the stirring mechanism moves up and down along the inner