L3220 roller cooling machine is mainly used for cooling old sand in foundry workshop.It is suitable for small plant area, high mechanization degree, high recycling rate of sand in continuous operation and with no cooling time.In the process of passing through the roller, the hot and old molding sand is brought to the upper part of the roller several times by the supporting plate. The molding sand is brought up to slip and fall as the roller rotates. In this process, air is pumped to cool the old molding sand.

In order to meet the requirements of the user, the user can increase the productivity and cooling effect by increasing the form of feed plate and supporting plate.