Tritium sample automatic distillation and filtration device and method

The invention discloses an automatic distillation and filtration device and method for a tritium sample, and the device comprises a distillation flask which is provided with a steam discharge pipe; the heating device is used for heating the water sample to be treated in the distillation flask and generating steam; the condensation pipe assembly is provided with an outer pipe and an inner pipe, a cooling water flowing space is formed between the inner pipe and the outer pipe, a water inlet is formed in the lower portion of the outer pipe, and a water outlet is formed in the upper portion of the outer pipe; an opening in the upper end of the inner pipe is a steam inlet which is communicated with a steam discharge pipe; the lower end opening of the inner pipe is a distillate outlet; the ion exchange column is located below the condensation pipe assembly, the ion exchange column is provided with a liquid inlet and a liquid outlet, and the distillate outlet of the inner pipe is communicated with the liquid inlet;