Grain drying equipment can be divided into corn dryers, rice dryers, etc. Using a rice dryer to dry freshly harvested rice effectively prevents mold growth during storage, ensuring the quality and safety of the rice.

The main reasons for uneven moisture content in rice are:

1. Significant differences in the moisture content of the raw grain itself;

2. Unstable and fluctuating hot air temperature during operation, resulting in uneven moisture content;

3. Problems with the grain dryer's discharge mechanism, such as inconsistent discharge gaps, leading to uneven moisture content;

4. Localized blockages in the grain dryer's discharge mechanism, affecting drying quality;

5. Uneven hot air coverage, with some areas receiving air while others are not, resulting in uneven moisture content;

6. Blockages or insufficient area at the exhaust vent of the grain dryer's exhaust chamber, affecting drying quality and causing uneven moisture content.