介绍了一种新型的特殊爪型干式真空泵的容积利用系数。根据啮合原理 ,提出了计算机模拟创成方法并同其它爪型干式真空泵的容积利用系数做出了比较。研究表明 ,特殊爪型干式真空泵与单爪型干式真空泵相比 ,在同样结构参数下 (泵腔尺寸或中心距 ) ,对于不同的形状系数 ,容积利用系数提高了 14 %～ 5 6 % ;特殊爪型干式真空泵与双爪型干式真空泵相比 ,在保证转子强度许可和同样结构参数 (泵腔尺寸或中心距 )下 ,对于不的形状系数 ,容积利用系数提高了 1.4 %～ 2 4 .4 %。所以 ,我们得出结论 ,(1)利用新型的特殊爪型转子 ,我们可以在结构尺寸相同时获得更大的抽速 ;(2 )本文提出的计算机模拟创成法 ,对于加快研制开发新的真空泵或压缩机转子型线 ,具有一定的实际意义 The volumetric utilization factor of a new type of special claw dry vacuum pump is introduced. According to the principle of meshing, a method of computer simulation was proposed and compared with the volumetric utilization factor of other claw-type dry vacuum pumps. The research shows that the volumetric utilization factor of the special claw-type dry-type vacuum pump is 14% -56% higher than that of the single-claw-type dry-type vacuum pump under the same structural parameters (pump chamber size or center distance) ; Special claw-type dry vacuum pump Compared with double-claw dry-type vacuum pump, the volume utilization factor increased by 1.4% to the non-shape factor while guaranteeing the rotor strength and the same structural parameters (pump chamber size or center distance) 2 4 .4%. Therefore, we conclude that: (1) With the new special type of claw rotor, we can obtain a larger pumping speed when the structure size is the same; (2) The computer simulation method proposed in this paper can accelerate the research and development of new Vacuum pump or compressor rotor profile, has some practical significance