This machine has improved upon the inefficient methods of the past, which mainly relied on air convection for heat dissipation and natural cooling. It uses strong cold air to keep the sand in a boiling state, allowing it to fully contact with the heat exchanger placed above the boiling plate, enabling the sand flow to undergo secondary heat exchange. By controlling the pressure of the airflow discharged from the equipment to create negative pressure, it can effectively advance the sand flow while simultaneously suctioning out the dust in the sand flow. It is an efficient used sand cooling equipment. There are two models available for users to choose from: the FTB series and the S52 series.