Used part of the rotor pump is a simple spurgear drive motor, electric screw fixation using pin.
部分转子泵采用的是简单的直齿轮驱动电机，电机采用地脚螺钉固定。
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The most common rotary-pump designs used today are spur-gear, generated-rotary, sliding-vane, and screw pump, each type has advantages that make it the most suitable for a given application.