| 摘要 |
The shaft 5 of the motor with the wheel 2 can be moved axially opposite the housing 1 of the pump and of the casing 7 of the motor; a return spring 19 is provided between a bearing ring 18 of the casing of the motor and the bearing 8 of the latter, and the return spring, when the pump is stopped, holds the shaft of the motor in a final position advanced into the housing of the pump and to which the sealed gasket 11 is applied with slight pressure against the cross-section, on the opening side, of the housing of the pump. <IMAGE>
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