| 摘要 |
A rotary pump for liquid comprising a housing 20, a shaft 30 carrying a motor rotor 22, a motor stator 24 fixed in the housing 22 and surrounding the rotor 22 to rotate the rotor and shaft about an axis a, where the shaft is mounted in the housing by axially spaced conical bearings 40, 42 each of which includes a first element 70, 72 fixed on the shaft 30 with a first conical bearing surface concentric with the axis and a second journal element 50, 52 carried by the housing with a second conical bearing surface concentric with the axis and slidably engaging the first bearing surface. A biasing element 60, 62 forces the second elements or journals toward each other in an axial direction to compensate for wear between the friction surfaces. A wear indicator comprises a first follower on the housing and movable axially with the second element 50 of the first conical bearing 40, a second follower on the housing and movable axially with the second element 52 of the second conical bearing 42 with the follower indicator elements spaced from each other a spacing indicative of the total axial movement of the second bearing elements and a view window on the housing for viewing the spacing of the indicator elements. <IMAGE> |
