Patent ID: 8857737
Filing Date: 2014-10-14
Classification: B05B,B08B

Abstract:
1. A spraying device comprising: an outer fluid transmission tube which is disposed in the spraying device and is rotatable with an axial of the spraying device; the outer fluid transmission tube being in fluid communication with a fluid input tube which is used for connecting to a fluid supplying source; and an inner fluid transmission tube, used for connecting to a fluid container, being disposed in the outer fluid transmission tube, wherein a friction reducing layer, made of a material having a low friction coefficient, is provided between the outer fluid transmission tube and the inner fluid transmission tube and is rotated together with the outer fluid transmission tube, and an inner wall surface thereof is formed as with a smooth surface, so as to make a friction force between the friction reducing layer and the inner fluid transmission tube lower; wherein the outer fluid transmission tube has a conveying section and a bend output section connected with the conveying section, and the friction reducing layer is provided extending along the bend output section.