A multi-stage pneumatic conveying means feeding

The present invention relates to a multi-stage pneumatic conveying feeding means belongs to the technical field of agricultural harvesting machinery. The apparatus includes an intake air inlet end and the outlet fan communicating pipe, into the wind horizontally disposed lower end of the tube wind feeder drop tube shuttle, the upper end of the throwing tube of the feed tube communicates; off feeder body an upper feed opening opened in the ducts, ducts blanking interval at the open mouth of the support has an adjustable position perpendicular to the shaft and the material conveying direction, the guide shaft fixing blocks, one side of the jet baffle plate fixed to the block, decreasing height along the material conveying direction of the jet plate; supporting material conveying direction of the central pipe above the groove parallel to the axis grass dial, dial extends out of the anti-grass winding shaft diameter and axially spaced vanes radially projecting finger constituting dial grass device. The present invention can ensure a steady flow of the material, effectively prevent the material feed port and reflux clogging.