High-temperature submerged pump

The invention relates to a high-temperature submerged pump. A filter screen and a rib plate are arranged at an inlet of a pump body; a liquid discharge pipe assembly is connected to a flange at an outlet of the pump body; an impeller is arranged at the left end of a first rotating shaft through an impeller nut and a chuck; the first rotating shaft is rotatably arranged in an intermediate bearing frame through a sliding bearing assembly; the right end of the first rotating shaft is connected to a second rotating shaft through a connecting shaft member; the second rotating shaft is also rotatably arranged in an intermediate bearing frame through a sliding bearing assembly; the intermediate bearing frames are arranged on a middle connecting pipe, the left end of the middle connecting pipe isarranged on a pump cover, and the right end of the middle connecting pipe is provided with a bottom plate; the right end of the bottom plate is provided with a packing seat in a sealed manner; the packing seat is provided wit