spiral pump

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.

Variable Angle spiral method was used in a trial way in the design of the warped blader of solid - liquid two phase slurry pump.

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.