| 摘要 |
<p>A cartridge (16) discharges paint in a paint chamber (19) from a feed tube (21) by displacing a piston (18) in a tank (17) . A waste liquid adjusting valve (56) located on a downstream side of a waste liquid passage on-off valve (47) and having a throttle passage (62) is provided in a waste liquid passage (45) to be connected to the feed tube (21). This waste liquid adjusting valve (56) is opened at the time of washing clean the paint chamber (19) and a paint supply passage (21A) of the feed tube (21) to widely enlarge the passage cross-sectional area of the waste liquid passage (45) . Meanwhile, when paint is replenished into the paint supply passage (21A), the waste liquid adjusting valve (56) uses the throttle passage (62) as a flow passage to narrowly throttle the passage cross-sectional area of the waste liquid passage (45) . The amount of discarded paint which flows out from the feed tube (21) is thereby reduced.</p> |
