| 摘要 |
PURPOSE:To perform thin or thick spray painting, by providing a valve body for opening and closing the paint passing hole of a valve seat, a means for reciprocally moving the valve body and a paint control means for regulating the reciprocating moving quantity of the vale body to a body part. CONSTITUTION:A valve body 14 having a piston 17 moves to the left to contact with a valve seat 13 and a head part 15 closing a paint passing hole 13a is separated from the valve seat 13 to open the paint passing hole 13a. Because the compressed air injected from an air nozzle 5 passes through a spray orifice 2a at a high speed, negative pressure is generated in a spray nozzle 2 and paint is sucked from a paint inlet 12 through the paint passing hole 13a by said negative pressure to be injected from the spray orifice 2a as particles. The gap between the air nozzle 5 and the inner wall surface of the nozzle 2 is held by holding an air pipe 4 to a head part 1 and the spraying of high viscosity paint is performed continuously and uniformly.
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