EMULSION SPRAY DEVICE FOR ASPHALT FINISHER EQUIPPED THEREWITH

摘要

PROBLEM TO BE SOLVED: To smoothly spray an asphalt emulsion at all times by periodically cleaning spray nozzles with air, and to selectively and efficiently wash the spray nozzles needed. SOLUTION: An asphalt finisher with an emulsion spray device has an emulsion spray mechanism 15 with a plurality of spray nozzles 19 attached to a spray bar 18. Each of the spray nozzles 19 comprises an emulsion valve 21 for opening or closing a flow passage through which the asphalt emulsion fed from an emulsion tank 13 into the spray bar 18 is supplied into the spray nozzles 19, and a washing solenoid selector valve (washing valve) 27 for opening or closing another flow passage through which air for washing is supplied from a compressor (source of compressed air) 16 into the spray nozzles 19. While an automatic washing selector switch 30 is on, each washing solenoid selector valve 27 feeds the washing air to each spray nozzle in the cycle determined by a washing cycle setter 29; when any of the washing solenoid selector valves are selected using a washing selector switch 28, the selected ones individually feed the washing air to the spray nozzles 19. COPYRIGHT: (C)2004,JPO