Patent ID: 6648558
Filing Date: 2003-11-18
Classification: B65G,Y10T

Abstract:
Conveyor apparatus for conveying particulate material, comprising:a pressure vessel that receives a charge of particulate material to be conveyed; pressurising means that pressurizes the pressure vessel with pressurised gas; a conveyor duct having an inlet connected to the pressure vessel to receive pressurised gas and entrained particulate material from the pressure vessel and convey it in a flow to a discharge end of the duct through which to discharge the conveyed particulate material at a discharge location; and a flow constrictor at the discharge end of the duct presenting a discrete reduction of at least 20% in the effective cross-sectional area for flow from the discharge end of the duct so as in use of the apparatus to produce a discrete pressure drop in the discharging flow therethrough.