High-efficiency dryer based on heat-cold-exchange drying technology

The utility model discloses a high-efficiency dryer based on the heat-cold-exchange drying technology. The high-efficiency dryer based on the heat-cold-exchange drying technology comprises a material container with a material-stirring paddle arranged inside, an air inlet pipeline is arranged at the lower portion of the material container, a heat exchange chamber is connected at the other end of the air inlet pipeline, the heat exchange chamber is connected with a first air inlet, an air outlet pipeline is arranged on the upper portion of the material container, the air outlet pipeline is connected with an exhaust fan, an independent cold air inlet pipeline is connected on the air inlet pipeline and is connected with a second air inlet, and a hot air valve is arranged at the connecting position of the heat exchange chamber and the air inlet pipeline. A cold air valve is arranged between the cold air inlet pipeline and the air inlet pipeline, heat-cold exchange of air entering the material container is achieved