| 摘要 |
A cap, spinner, and discharge nozzle assembly for use with a liquid dispensing a pparatus such as a trigger sprayer. The spinner assembly can be externally fitted to the discharge nozzle, and includes an annular chamber (32) surrounding a central post (38) having a swirl chamber (44) in its top. The central post (38) includes longitudinal grooves (42), communicating with tangential grooves (46) in an annular wall (45) defining the swirl chamber (44). Apertures (40) are provided in the base of the annular chamber (32) such that pressurized liquid flows through the apertures (4 0) and into the annular chamber (32), with a resulting reduction of velocity, and then along the longitudinal grooves (42) and through the tangential grooves (46) into the swirl chamber (44). A cap is provided which variably engages the discharge nozzle and which has at least a central projection (51) on the inner side of its front face, and preferably an annular groove (52) formed b y an outer projection (53) surrounding the central projection (51). The central projection (51) may reversibly seal against the flo or and/or annular wall (45) of the swirl chamber (44), and the annular groove (52) may seal over the annular wall (45). |
