By taking 135 three-screw pump as an example, the geometric parameter design, the forming of spiral surface and the characteristic of screw gearing are investigated.
以135型三螺杆泵为例，对螺杆几何参数设计、螺旋型面的形成、螺杆啮合特性进行了探讨。
2
Variable Angle spiral method was used in a trial way in the design of the warped blader of solid - liquid two phase slurry pump.
采用变角螺旋线法对固液两相流渣浆泵扭曲叶片进行了尝试性设计，并初步总结了其设计方法和规律。
3
After unit shaft sealing was reformed into spiral dynamic pump sealing in Nanyaheand Gengda hydropower stations, operation defect which existed for many years is disappeared.