| 摘要 |
The partition (2) positioned in the axial centre along one inner surface of the housing (1), divides the housing's interior into a compartment (4) at the bottom end, and a compartment (7) at the open end. The partition has an internal thread (3) and a container recess (5). A shaft (11) protruding at one end from the housing has an external thread (12) and protuberances (13). One end of a rotor (41) inside the second compartment (7) faces the shaft. The housing is filled with viscous fluid. An O-ring (71) at the open end of the housing forms a water-tight seal between the housing and shaft. Screwing the shaft into the housing while the protuberances engage with the recesses also turns the rotor until the protuberances come out of the recesses. |
