Electrostatic coating apparatus for electrically conductive...

B - Operations – Transporting – 05 – B

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B05B 5/16 (2006.01) F16L 45/00 (2006.01)

Patent

CA 2757766

In an electrostatic coating apparatus (1), an electrically conductive coating material is supplied through a coating material supplying path (11) to a coating gun (13) to which a high voltage is applied. The electrostatic coating apparatus (1) is provided with an insulating and separating valve (32) capable of electrically insulating and separating the coating material supplying path (11) into an application side in which the high voltage is applied and a non-application side. The insulating and separating valve (32) is provided with a female coupling member (32U) having a first connecting portion (54) and a male coupling member (32D) having a second connecting portion (64). A supplying hole (55) for supplying a cleaning fluid to the first connecting portion (54) and the second connecting portion (64) and a discharging hole (56) for discharging the cleaning fluid supplied to the first connecting portion and the second connecting portion are provided on one of the female coupling member (32U) disposed on the non-application side and the male coupling member (32D).

Dans un dispositif de revêtement électrostatique (1), un matériau de revêtement conducteur est apporté par l?intermédiaire d?un chemin d?apport en matériau de revêtement (11) à un pistolet de revêtement (13) auquel est appliquée une tension élevée. Le dispositif de revêtement électrostatique (1) est pourvu d?une soupape d?isolation valve (32) pouvant isoler électriquement le chemin d?apport en matériau de revêtement (11) dans le côté appliqué auquel est appliquée la tension élevée et dans le côté non appliqué. La soupape d?isolation (32) comprend un élément joint femelle (32U) comportant une première pièce de raccordement (54) et un élément joint mâle (32D) comportant une seconde pièce de raccordement (64). Un trou d?apport (55) destiné à apporter un fluide de nettoyage à la première pièce de raccordement (54) et à la seconde pièce de raccordement (64) et un trou de sortie (56) destiné à faire sortir le fluide de nettoyage apporté à la première pièce de raccordement et à la seconde pièce de raccordement sont disposés dans l?élément joint femelle (32U) ou l?élément joint mâle (32D), qui se trouve dans le côté non appliqué.

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