Dryer with cooling air return device

The utility model discloses a dryer with a cooling air return device, which comprises a short pipe arranged behind an outer cylinder, a cover body arranged at the front end of a discharge cover and used for discharging air and partial fine materials, and a cold air valve arranged at the tail of the discharge cover and filled with cold air to cool the materials. The problems that after sand is dried and materials enter a drying machine to be dried, due to the fact that the temperature of the materials is too high, screening equipment can be damaged during screening, the equipment cannot operate normally, and the production efficiency is affected are solved. 本实用新型公开了一种自带冷却回风装置的烘干机，包括增加外筒后短管，在出料罩前端增加罩体，用于出气和部分细料，出料罩尾部加装冷风阀，灌以冷风，实现物料的冷却。避免了沙子烘干，物料进入烘干机烘干后，由于物料温度过高，在进行筛分时会损坏筛分设备，使设备不能正常运行，影响生产效率等问题。