| 摘要 |
Provided is a paint circulation system that can efficiently and suitably prevent paint sedimentation and can achieve cost reductions and reductions in space for constituting the device. A paint circulation system (1) is provided with: a loop-shaped main line (11) for supplying paint from a paint tank (12); a branch line (15) branched from the main line (11) and connected to a painting device (20); a supply pump (13) for pressure feeding the paint supplied to the main line (11) to the painting device (20) side; and a pressurization device (30) that accumulates pressure by means of the pressure of the paint in a high pressure state wherein paint pressure is higher than a prescribed pressure and applies pressure to the paint inside the branch line (15) in a low pressure state wherein paint pressure is lower than the prescribed pressure. The supply pump (13) is driven such that a high-pressure state and a low-pressure state arise, and using the pressure difference between the prescribed pressure in the low-pressure state and the pressure of the paint, a flow of paint within the branch line (15) sent to the main line (11) side from the painting device (20) side is created, thereby preventing sedimentation of the paint. |
