Waste heat recovery device for sodium silicate production

The utility model discloses a sodium silicate production waste heat recovery device which comprises a recovery box, a smoke inlet pipe and a smoke outlet pipe, the smoke inlet pipe and the smoke outlet pipe are arranged on one side of the recovery box, a water inlet and a water outlet are formed in the recovery box, a rotating rod and a flow dividing pipe are arranged in the recovery box, the rotating rod is of a hollow structure and is arranged in the length direction of the recovery box, and the flow dividing pipe is arranged in the recovery box. One end of the rotating rod is connected with the smoke inlet pipe, the other end of the rotating rod is connected with the smoke outlet pipe, the flow dividing pipes are evenly distributed on the outer wall of the smoke inlet pipe, and an inner cavity of each flow dividing pipe is communicated with an inner cavity of the rotating rod. According to the technical scheme, heat of sodium silicate production waste heat is conducted to water in the recycling box through