Powder sampling device for recycled concrete production

The utility model provides a powder sampling device for recycled concrete production, which comprises a top plate, a bottom plate, a connecting rod, a lifting mechanism, a rotating mechanism and a sampling barrel, a passing opening is arranged on the bottom plate, the lifting mechanism comprises an electric push rod and a lifting plate, and the rotating mechanism comprises a rotating motor, a gear and a rack. The bottom plate is arranged above to-be-sampled concrete powder, the powder is compacted, then the lifting plate is driven to descend through the electric push rod, in the descending process, the rotating motor is started, the rotating motor drives the gear to rotate, the rack is arranged on the outer surface of the sampling barrel, the gear drives the sampling barrel to rotate through the rack, and therefore the sampling barrel can descend in a rotating mode; the sampling barrel finally descends into the concrete powder from the passing opening, the powder is crushed, and the crushed powder falls into