The utility model provides a cold insulated cabinet connects liquid device, it is main includes the raffinate evaporimeter, a plurality of cryogenic liquids delivery pipes of, the bottom of raffinate evaporimeter is provided with the steam inlet pipe that inserts steam, has set gradually at least following cryogenic liquids delivery pipe in the top of this steam inlet pipe: the empty delivery pipe of liquid, liquid nitrogen emission pipe and liquid oxygen delivery pipe, be provided with cryogenic liquids evaporation gas outgoing mouth at the top of raffinate evaporimeter, liquid nitrogen emission pipe and the raffinate evaporimeter between the liquid oxygen delivery pipe on still be provided with the liquid argon delivery pipe, and the most beneath above cobblestone of one deck of having laid of raffinate evaporimeter, it has simple structure, safe and reliable, reasonable high -efficient, and in the time of can preventing effectively that high -purity liquid from discharging simultaneously, rapid vaporization is expanded, is leaded to liquid to flow backward, avoids producing mutual contamination, the protection is empty to divide ann congruent characteristics.