SCREW CONVEYER FOR BULK TRANSPORT VEHICLE

摘要

PURPOSE:To improve transport efficiency and facilitate cleaning with the titled conveyer for transporting powder by constituting a screw blade with a spiral metallic blade and a plastic blade attached to the outer side of the metallic blade. CONSTITUTION:A screw blade 14 consists of a metallic blade 15 and a plastic blade 17, with the blade 14 comprising a main blade 15A and a sub-blade 15B, and with the blade 17 riveted between the blades 15A and 15B. As the material for the plastic blade 17, fluorine resin or the like is used. The plastic blade 17 is attached at the intervals of 1-2mm in the axial direction of the screw shaft and intermittently at 1-3 pitches of the screw. On the inner surface of a casing 11 on the other hand is formed a thin plate band-shaped raised part 18 parallel to the shaft. With this constitution, a bearing effect is produced between the plastic blade and the casing. As a result, the gap between the screw and the casing can be made smaller to improved transport efficiency.