| 摘要 |
The motor-pump unit of the invention relates to a self-priming centrifugal pump and electric motor combination wherein the apparatus includes a sealed outer housing means having liquid inlet and a discharge outlet, a pump mounted within the housing means, an electric drive motor positioned within the housing means and including an inner housing for the electric motor. The inner housing is secured to the housing means to form a cooling chamber around the electric motor, and the pump has an outlet connecting to the cooling chamber for circulation of the pumped liquid around the motor housing prior to discharge from the apparatus.
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