| 摘要 |
A centrifugal separator includes a frame (1) and a rotating part (2) having a spindle (6) and a centrifuge rotor (7) enclosing a separation space (8). An inlet channel (20) provides fluid communication into the separation space and includes a rotary channel part (21), a frame channel part (22), and a fluid seal (23) at the interface between the rotary and frame channel parts. An outlet channel (30) provides fluid communication out from the separation space and includes a rotary channel part (31), a frame channel part (32), and a seal (33) at the interface between the rotary and frame channel parts. The inlet and outlet channels are arranged concentrically with each other. A pump is provided to generate a leak flow across the appropriate seal interface in the direction from the outlet channel to the inlet channel to counteract leakage across the seal interface in the opposite direction. The pump may be incorporated into the structure of the seal or provided separately to pressurize the flow in the outlet channel so that fluid does not flow across the seal from the inlet channel into the outlet channel. |
