| 摘要 |
1. Bend member for use in pneumatic installations conveying a free-flowing material with two sleeves (20, 21) at both ends, which are displaced by 90 degrees relative to one another with respect to their flow direction and with a bend curve between the two sleeves having a convexity (12) which, based on the plane (6) of the flow deflection (4) extends radially outwards and to either side, characterized in that the wall portion (45) of the convexity (12) located in the extension of the inflow-side sleeve (21) is reinforced, that an obstruction (80) directed counter to the flow is provided, that the obstruction (80) is formed by an internal projection of an outwardly positioned wall portion (9), that the obstruction projects into the enlargement (24) formed by the convexity (12), that the obstruction (80) connects directly onto the discharge-side sleeve (20) and that the obstruction (80) forms with the outwardly positioned wall portion (9) and lateral wall portions (14, 15) adjacent on either side a pocket (16) open counter to the flow. |
