Reagent-grade phosphoric acid production equipment

The utility model discloses reagent grade phosphoric acid production equipment which comprises a crystallization box, a filter pipe is fixedly connected to the inner top wall of the crystallization box, one end of the filter pipe penetrates and extends out of the crystallization box, a cavity is formed in the crystallization box, hot water pipes are fixedly connected to the outer walls of the two sides of the cavity, and the hot water pipes are communicated with the crystallization box. Two hot water pipes are fixedly connected to the inner wall of one side of the cavity, one end of each hot water pipe penetrates and extends out of the crystallization box and is provided with a valve, cold water pipes are fixedly connected to the positions, located below the hot water pipes, of the inner wall of one side of the cavity, one end of each cold water pipe penetrates and extends out of the crystallization box and is provided with a valve, and a discharging pipe is fixedly connected to the inner bottom wall of the c