Patent ID: 8997776
Filing Date: 2015-04-07
Classification: B01F,B05B,Y10T

Abstract:
1. A color change valve device comprising: a manifold including an internal paint passage to which connector passages are provided to radially penetrate therethrough at plural locations axially spaced from each other; a wash fluid valve provided to be connected to a most upstream one among said respective connector passages in said manifold for performing supply and blockade of a wash fluid to said paint passage; and plural paint valves provided to be connected to said connector passages in said manifold at a downstream side of said wash fluid valve for performing supply and blockade of paints to said paint passage; a swirl flow forming member provided in said paint passage in said manifold for forming a swirl flow by the wash fluid in said paint passage, wherein said swirl flow forming member is arranged across an entire length of said paint passage, and wherein said swirl flow forming member is formed as a single member arranged in a state of being freely movable in said paint passage, and includes a plurality of successive unit spirals, each unit spiral comprising a front surface and a back surface reversed by 180-degree twist thereof.