| 摘要 |
PROBLEM TO BE SOLVED: To provide a series-piping two-pipe system which solves the deficiencies not satisfying lowest flow rates of a main supply pipe and a return pipe in multiple taking out of≥0.3 m/sec for oil coatings and≥0.05 m/sec for water-based coatings, and specified inner pressures. SOLUTION: In the parallel piping two-pipe system, a coating is branched at a main piping 3A from pressure-feed side 5, paralleled through a single or plural booths, flows from the first taking-out forth points R1 and R1 to the first taking-out back points R1 and L1 and from the last taking-out forth points Rn2 and Ln2 to the last taking-out back points Rn2 and Ln2, joins at the main return parallel piping 4X and reaches the return tank 6. In the parallel piping fixed resistance two-pipe system, the lowest volumetric flow rate, the mass lowest flow rate and a specified inner pressure throughout the back and forth piping can be set with a fixed resistance piping 1 from temporary taking-out dummy forth points R1 and L1 to temporary taking-out dummy back points R1 and L1 and a fixed resistance piping 2 from temporary taking-out dummy forth points R2 and L2 to temporary taking-out dummy back points R2 and L2. COPYRIGHT: (C)2009,JPO&INPIT
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