| 摘要 |
PROBLEM TO BE SOLVED: To provide a dew condensation prevention device in a granular material discharge chute which can prevent dew condensation effectively with a simple configuration.SOLUTION: An upper space S2 is formed between an inner chute 2 and an upper outer chute 3. A lower space S3 is formed between the inner chute 2 and a lower outer chute 4. Both spaces are separated by seal materials. An upper air discharge port 2" is provided in the vicinity of an upper opening of the inner chute 2. A cover 5 for guiding air from the upper air discharge port 2" below the inner peripheral surface of the inner chute 2 is provided. The air introduced into the upper space S2 from upper air introduction holes 9a, 9b of the upper outer chute 3 can be jetted onto the inner peripheral surface of the inner chute 2 from the upper air discharge port 2". The air introduced into the lower space S3 from lower air introduction holes 12a, 12b of the lower outer chute 4 can be jetted downward from a lower air discharge port 11. |
