Method of cleaning a paint feed line of a painting system
5 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus are provided to clean a paint feed-line (1) of a painting system, line running from at least one paint tank (2, 9) to a paint deposition device (3) and feeding paint in this direction during the operational stages. During cleaning stages between operational stages, a cleaning substance is forced through the feed line (1). An inert gas, for instance nitrogen, is used as the gas for this purpose, and at the end of the cleaning stages the feed line (1) is filled with the inert gas. The gas remains in the feed line (1) until the next operational stage begins.
12 Citations
33 Claims
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1-18. -18. (canceled)
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19. A method of cleaning a paint feed line of a painting system in which the paint feed line connects at least one paint tank to at least one paint deposition device for the purpose of moving the paint during operational stages from the tank to the deposition device, said method comprising:
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moving a cleaning substance through the feed line during a cleaning stage between the operational stages; and
filling the feed line with an inert gas at the end of the cleaning stage and keeping the inert gas in the feed line until the next operational stage begins, thereby effectively preventing ambient air from entering the feed line in the time interval between the termination of the cleaning stage and the beginning of the next operational stage. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 30, 31, 32, 33)
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- 28. The method as claimed in claim 28, further comprising closing said second valve and opening said third valve upon detecting the boundary between the residual paint and the inert gas at a point adjacent the first end of said feed line.
Specification