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30

2026-04


GH 250 High‑Head Gravel Pump Impeller‑Volute Clearance Optimization: Improving Efficiency and Reducing Particle Jamming

GH 250 high‑head gravel pump impeller‑volute radial clearance optimization: optimal range 0.6-0.8 mm – improve efficiency by 6%, reduce particle jamming. Field adjustment methods (shimming/grinding) and measured data included.

30

2026-04


4/3C-XAH Slurry Pump Coupling Elastic Element Frequent Failure: Misalignment Tolerance and Material Upgrade

4/3C-XAH slurry pump coupling spider frequent failure causes: misalignment (radial ≤0.08 mm, angular ≤0.05/100 mm) and rubber material wear. Upgrade to polyurethane spider, extend life 3‑5 times.

30

2026-04


ZJL 50 Vertical Slurry Pump Pit Bottom Anti‑Settling Retrofit: Effect of Agitator Speed and Blade Shape on Suspension Capacity

ZJL 50 vertical slurry pump pit bottom anti‑settling retrofit: reduce agitator speed from 1450 rpm to 980 rpm, change straight blades to backward‑curved blades – sediment reduced by 65%, run cycle extended from 3 days to 10 days.

29

2026-04


GH 150 High‑Head Gravel Pump Critical Velocity Calculation for Long‑Distance Sand Transport: Preventing Sedimentation Blockage

GH 150 high‑head gravel pump critical velocity calculation for long‑distance sand transport to prevent sedimentation blockage. Durand formula, parameter tables, and minimum safe flow for various pipe diameters.

29

2026-04


ZJQ 100 Submersible Slurry Pump Pre‑Start Insulation Resistance Quick Check: Application of Polarization Index in Humid Environments

ZJQ 100 submersible slurry pump pre‑start insulation quick check: Polarization Index (PI) eliminates surface interference, accurately detects winding moisture. Start only if PI ≥ 1.5. Includes test method and interpretation criteria.

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