| 摘要 |
A split tube centrifugal pump comprises a pump casing divided into a pump space and a motor space, an impeller driving a conveying fluid in the pump casing, a vertically disposed shaft in the casing, the shaft being hollow and including an axial channel therein, a rotor including a channel therein, and a partition separating the pump space from the motor space. The partition includes a first aperture through which the shaft passes and a second aperture. The conveying fluid circulates between the pump space and the motor space in a circuit comprising the first aperture in the partition, the channel in the rotor, and the channel in the shaft. In a particularly preferred embodiment of the invention, the split tube centrifugal pump further comprises a filter disposed upstream or downstream of the first aperture in the partition, and a slide ring sealing associated with the second aperture and through which the vertical shaft passes.
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