Preparation facilities of cryo heat tube

The utility model discloses a preparation facilities of cryo heat tube, the air outlet pipe hole that the mouth of pipe that admits air of mechanical pump passes through pipeline and diffusion pump is connected, and the side of pipeline is equipped with first valve and second valve, first valve is located the right side of second valve, the left end mouth of the mouth of pipe second connecting pipe that admits air of diffusion pump is connected, the second connecting pipe is the three -way pipe, and the right -hand member mouth of second connecting pipe is connected with the pipeline side, and the right -hand member mouth of second connecting pipe is located between first valve and the second valve, and the feeding tube entrance that advances of the upper end of second connecting pipe and vacuum fill is connected. This preparation facilities of cryo heat tube, including the mechanical pump, simple structure utilizes the vacuum to make the boiling point lowering of working medium to making the cryo heat tube,