| 摘要 |
A pump system 2 has a drive unit 4 and removable pump units 8, 10. The pump units have a body 22,26 having a pump cavity 24 and a rotary pump element 34 arranged to rotate in the pump cavity about an axis. Vanes 42 drive fluid from inlet 28 to outlet 30. A magnetic coupling is provided between magnets 40 in the rotary pump element 34 and magnets 16 in drive unit 4. A magnetic disk 48 provides an opposed axial force to axially balance the force between magnets 40 and magnets 16. |
