| 摘要 |
<p>A delivery appliance (70) having a cylinder (72) and a piston (74), in the direction of flow, lies between a supply line (6) and a delivery line (32) for the delivery of coating material from delivery appliance (70) to an atomiser (40). The piston (74) is provided with a chamber (1) surrounding it in a circle which is open to the cylinder wall (98) and is axially limited by sealing surfaces (7, 11) of the piston (74), which abut against the cylinder wall (98) so that they can slide along it. Chamber (1) is provided with a fluid inlet (3) and a fluid outlet (5) for conveying fluid for cleaning the cylinder wall (98). The delivery unit can therefore be thoroughly cleaned in a simple way and within a short period of time. <IMAGE></p> |
