Continuous crystallization production device for sodium hypophosphite

The utility model discloses a sodium hypophosphite continuous crystallization production device which comprises a crystallization kettle, a discharging pipeline is arranged at a discharging opening in the bottom of the crystallization kettle, a crystal elutriator is arranged on the discharging pipeline, the crystal outlet end of the crystal elutriator is connected with a feeding pipeline, the filtrate outlet end of the crystal elutriator is connected with one end of a circulating pipeline, and the other end of the circulating pipeline is connected with a discharging pipeline. The other end of the circulating pipeline is connected with a material return port of the crystallization kettle, a cooler is arranged on the circulating pipeline, and the circulating pipeline is also connected with the feeding pipeline; according to the utility model, the energy consumption can be reduced, the crystallization time is shortened, the mother liquor amount is reduced, the production efficiency is improved, and the productio