| 摘要 |
Spraying equipment, for example for herbicides, comprises a head for carrying a rotatable disc from which, in operation, fluid is delivered by centrifugal force. The head comprises a first component (4) and a second component (2) which are relatively rotatable about an axis (A). The first component (4) has an inlet aperture (33) and the second component (2) has an outlet aperture (40). The second component (2) also has a recess (44) which provides a passage connecting the inlet aperture (33) to the outlet aperture (40). Relative rotation of the components (2 and 4) varies the length and/or the flow cross-section of the passage, so as to regulate the flow of fluid to the rotatable disc. <IMAGE> |
