| 摘要 |
PURPOSE:To efficiently spray a number of kinds of chemicals, by selectively opening switching valves by operation of a selection switch to introduce pressurized air into air branches, causing the pressurized air to optionally suck chemicals in a tank, and spraying them through a blow-off port into a room of a car. CONSTITUTION:Chemicals blow-off ports 10c, 10d of a plurality of chemicals spray nozzle units N1-N4 provided on a spraying device are separately connected to chemicals tank 81-84 through chemicals communications lines 121-124. Air blow-off ports 10d, 11d of the units N1-N4 are independently connected to air branch lines 141-144, while an air main line 14 is connected to a pressure air supply source U and the lines 141-144, in which lines 141-144 switching valves 15a-15d are interposed respectively. By operating a selection switch 23 connected to those switching valves, the switching valves 15a-15d are selectively opened to optionally suck the chemicals in the chemicals tank 81-84 by means of pressurized air so as to spray the chemicals into a room of a car. As a result, it is possible to alternately spray a number of kinds of chemicals efficiently into a room of a car using a single device. |
