1.Basic Principles for Diameter Selection
Selecting the diameter of a powder conveying pipe requires consideration of multiple factors, including powder characteristics, conveying distance, and conveying rate. Generally, fine powder is suitable for smaller diameters of 50 to 100 mm, while coarse powder needs larger diameters of 150 to 200 mm. The longer the conveying distance, the larger the diameter usually needed to reduce resistance loss.
2.Recommended Diameters for Common Scenarios
Short distance conveying: within 5 meters, a diameter of 50 to 80 mm is sufficient.
Medium distance conveying: between 5 and 20 meters, a diameter of 100 to 150 mm is recommended.
Long distance conveying: over 20 meters, a diameter of 150 to 200 mm or larger is recommended.
3.Suggestions for Special Cases
When conveying special powders such as easily caking or high moisture materials, consider using a diameter one size larger than usual. Additionally, the pipe layout should minimize the number of bends, as each bend increases conveying resistance. Regularly checking the smoothness of the inner pipe wall is also important, because a rough inner wall significantly reduces conveying efficiency.
