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JCT 
Jul 16,2025 
What is high speed disperser?
High speed disperser is an industrial equipment specially used for rapid wetting, dispersion and uniform mixing of solid powder in liquid-solid system. It is widely used in paint, coating, adhesive, ink, resin, cosmetics, pesticide and other industries.
High speed disperser working principle
High speed disperser uses a high-speed rotating dispersing disk (usually a serrated disk) to generate strong shear force and turbulence in the liquid, quickly breaking up the powder and dispersing it into the liquid phase to form a stable mixture.
- The motor drives the dispersion shaft to rotate at high speed
- Dispersing disc cust the liquid and forms a turbulent zone
- The powder is sucked into the dispersing disc area under suction
- It is broken up and dispersed under strong shear and impact force
- The material circulates in the tank, rises, falls and is mixed by convection
Daily maintenance of high speed disperser (per shift/per day)
| Clean appearance | Remove residual materials on the machine body, dispersing disc and shaft (pay special attention to pigment accumulation) |
| Check seals | Observe the leakage at the mechanicla seal (solvent-based equipment should be ≤3 drops/minute) |
| Lubrication point filling | Add grease to the lifting guide rail and bearing seat (lithium-based grease NLGI2 grade) |
| Tighten bolts | Check whether the dispersing disc fixing bolts and anchor bolts are loose (torque must comply with the equipment manual) |
| Electrical inspection | Confirm that the emergency stop button and inverter heat dissipation are normal, and there is no abnormal alarm code |
Regular maintenance of high speed disperser (monthly/quarterly)
1. Mechanical system
Disperser wear detection
- Use a caliper to measure the height of the saw teeth. If the wear exceeds 20% of the original thickness, it must be replaced.
- Severe wear will cause the shear force to drop by more than 30%.
Bearing replacement
- Replace the spindle bearing every 3000 operating hours or 2 years.
- Dynamic balance test is required after replacement (vibration value ≤2.8mm/s).
2. Hydraulic lifting system
| Fault phenomenon | Possible cause | Solution |
| Lifting jam | Guide rail lacks oil/deforms | Clean the rail + replace the hydraulic oil |
| Lifting is not synchronized | Cylinder seal is aging | Replace the seal (solvent-resistant fluororubber) |
High speed disperser common trouble shooting guide
| Fault | Quick diagnosis | Professional solution |
| Abnormal vibration |
1. Loose dispersing disc 2. Damaged bearing |
Retighten or replace bearing (dynamic balancing is required) |
| Too high temperature temperature |
1. Insufficient cooling 2. Overload |
Check cooling water flow, reduce load or upgrade motor |
| Unstable speed |
1. Inverter failure 2. Voltage fluctuation |
Calibrate inverter parameters and install voltage stabilizer |
| Leakage |
1. Seal aging 2. Shaft wear |
Replace mechanical seal and repair shaft neck (spray tungsten carbide) |
Safety operating red lines for high speed disperser
- No-load operation is strictly prohibited (will cause dry grinding and burning of mechanical seals).
- Overspeed operation is prohibited (the speed must not exceed the nameplate calibration value).
- Cleanup must be performed after complete shutdown (to prevent shear damage).
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