Paint spraying equipment and method of cleaning the same

Details Paint spraying equipment and method of cleaning the same Paint spraying equipment and method of cleaning the same

1998-06-26

2000-03-14

Beck, Shrive

Coating processes

Spraying

118302, 222148, 239113, 239116, B05B 1502, B05D 102

Patent

active

060370106

ABSTRACT:
In a method of cleaning a paint application system when switching between two different types or colors of paint, at least a predominant portion of the first paint (35) remaining in a paint line (3) is caused to flow back into its paint supply container (5). Then the entire paint line is flushed out using a flushing medium, before supplying the second paint through the paint line. In this manner, the paint remaining in the painting system at the end of a painting cycle is not wasted, but rather is saved to later be reused. A paint application apparatus includes a paint supply switching device (4), at least two paint supply containers (5 to 8), a paint spray nozzle (2), and a paint line (3) connecting the color switching device (4) to the spray nozzle (2). Two receiver stations (28) and (31) are interposed in the paint line (3), and a shuttle element in the form of a pipe cleaner swab (29) is arranged in the paint line (3) so as to be able to shuttle back and forth between the two receiver stations. A pressure medium or flushing medium can be introduced into the paint line (3) between the first receiver station (28) and the spraying nozzle (2), so as to push the pipe cleaner swab (29) through the paint line (3) to the second receiver station (31). Thereby, the paint remaining in the paint line (3) is pushed back into the paint supply container.

REFERENCES:
patent: 2965114 (1960-12-01), Harden
patent: 5192595 (1993-03-01), Akeel et al.
patent: 5221047 (1993-06-01), Akeel
patent: 5289947 (1994-03-01), Akeel et al.
patent: 5326031 (1994-07-01), Konieczynski
patent: 5582350 (1996-12-01), Kosmyna et al.

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