Used to adjust the temperature of the molding sand in the sand recovery process, and the heat exchanger can increase and decrease the temperature of the molding sand.

The sand temperature modulator is used to regulate the temperature of silica sand, which can realize the two functions of cooling and heating, using the specific heat capacity of water, the heat exchanger adopts the new type of spiral fins evenly distributed on the steel tube to realize the heat exchanging of silica sand, and the thermocouple is used as the heat-sensitive element to control the temperature of the sand, which is equipped with a water tank and a pipeline system.