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US09593681B2 Pump device for delivering a medium 有权
用于传送介质的泵装置

Pump device for delivering a medium
摘要：
A pump device having a vane-type pump has a check valve in a fluid duct which leads from a pressure region to an under-vane region. The check valve blocks in the direction of the pressure region, preventing pressure from escaping from the under-vane region into the pressure region during the start-up of the vane-type pump.
摘要（中）：

具有叶片式泵的泵装置在从压力区域引导到叶片下区域的流体管道中具有止回阀。 止回阀在压力区域的方向上阻塞，从而防止在叶片式泵的起动期间压力从叶片下部区域逸出到压力区域。

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