NOVELTY - An air lock transportation method of biomass high-pressure carbonization furnace charcoal product comprises extruding continuously, crushing and impelling the charcoal particles using the variable pitch helical conveyor to gradually form a compact charcoal accumulation area with coexisted particles and powder and with air lock sealing function between the input end to the output end of the variable pitch helical conveyor.    USE - Method of air lock transportation of biomass high-pressure carbonization furnace charcoal product.    ADVANTAGE - The method employs an equipment having a simple and practical structure which requires low investment and maintenance cost.    DETAILED DESCRIPTION - An air lock transportation method of biomass high-pressure carbonization furnace (1) charcoal product comprises:    (A) inputting loosened charcoal particles using a high-pressure carbonization furnace through a sealing transportation pipeline to a variable pitch helical conveyor;    (B) extruding continuously, crushing and impelling the charcoal particles using the variable pitch helical conveyor (6) to gradually form a compact charcoal accumulation area with coexisted particles and powder and with air lock sealing function between the input end to the output end of the variable pitch helical conveyor;    (C) inputting the compact charcoal treated by the variable pitch helical conveyor to a water-cooling auger type conveyor through another sealing transportation pipeline; and    (D) cooling the compact charcoal to predetermined temperature (preferably not greater than 200 degrees C) while being transported, and sending the charcoal from the material outlet of the water-cooling auger type conveyor to execute the post treatment technique.    The compression ratio of the extrusion driving threaded rod of the variable pitch helical conveyor is 1.1-1.3, and the rotating speed is 15-60 rpm. An INDEPENDENT CLAIM is included for an air lock transportation equipment.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic view of air lock transportation equipment.    High-pressure carbonization furnace (1)    Charcoal outlet (5)    Variable pitch helical conveyor (6)    Charcoal input (7)    Water-cooling auger type conveyor (10)