As there were leak on contact place between shaft and rotor body in built up hollow rotor, dropping discharg gas speed of pump and efficiency applied of oil sealed sliding vane rotary vacuum pump.

组合式空心转子由于轴头与转子体之间的结合面存在着渗漏，使泵的抽气效率性能下降，从而影响其在应用中的效率。

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By using a symmetric structure for the rotor shape, the utility model effectively improves dynamic balance capability of the rotor of the vacuum pump and decreases rotating noise of the pump.

它采用对称的转子形状结构，有效地提高了真空泵转子的动平衡性能，有效降低了泵的运转噪声。

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The utility model relates to a rotor of a vacuum pump, a blower and a fluid conveying pump.

本实用新型涉及真空泵、鼓风机及液体输送泵的一种转子。

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