| 摘要 |
<p>The present invention relates to a rotor structure of a rotary positive displacement pump including a main rotor (10) and a subsidiary rotor (20), each of which has a plurality of compressing protrusions (12), (24). In the rotor structure of the present invention, a plurality of seating grooves (40) is formed in the surfaces of the compressing protrusions of the main rotor and the subsidiary rotor, and an elastic protrusion member (16), (22), which has a "(I)" shape, is seated into each of the seating grooves. Furthermore, rubber layers (42) are applied on respective circumferential outer surfaces of the main rotor and the subsidiary rotor between the elastic protrusion members. The thickness of the rubber layer is less than the height of the protruding part of the elastic protrusion member.</p> |
