Elbow fitting for pneumatic conveying system

摘要

An elbow fitting (10) for a pneumatic product conveying system expands from the inlet pipe (16) along the outer side of the elbow fitting to enable a layer of accumulated product particles to be formed so as to move at a lower velocity than the velocity of the incoming product stream while establishing a moving contact surface for deflecting incoming product particles toward the outlet pipe (17) with a minimum of pressure resistance and product attrition. The outer portion (40) of the elbow fitting is removable from the body portion (35) to allow the outer portion (40) to be replaced when wear becomes an issue in the performance of the elbow fitting. The wear member (40) is affixed to the body portion by a flange (42) that creates a seam extending from the step feature (39) diagonally to the rear wall (27). A gasket or O-ring is trapped within the flange to seal the wear member against the body portion.