| 摘要 |
In an immersing motor-pump unit (14), which is comprised of a driving motor and of a pump coupled to the motor and which may be lowered into a container, and guided by means of guiding devices (16) with guiding elements to a lowered position where it may be connected to the inlet of a discharge conduit (13), there is provided between the pump discharge pipe (141) and the inlet of the discharge pipe (11) an intermediate connection part (15) as a non-return valve, of which the valve body may be connected to the pump discharge pipe, which is provided with connection elements (154) to provide a connection with the discharge pipe and which carries the guiding elements (153).
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