1、 Mechanical transmission system malfunction

1. Motor overheating or abnormal noise
   • reason：
     • Bearing wear or insufficient lubrication leads to increased friction.
     • Motor overload (such as high material viscosity or excessive flow).
     • Poor heat dissipation (such as blocked ventilation openings or high ambient temperature).
   • Solution：
     • Regularly replace lubricating oil and check the condition of bearings.
     • Adjust material viscosity or flow rate to avoid overloading operation.
     • Clean the cooling system to ensure good ventilation.
2. Vibration or fracture of transmission shaft
   • reason：
     • Bending or improper installation of the shaft can cause dynamic balance failure.
     • Hard particles (such as sand, gravel, and metal fragments) are mixed into the material and collide with the shaft.
     • Long term overload operation and material fatigue.
   • Solution：
     • Re calibrate the dynamic balance of the shaft to ensure installation verticality.
     • Preprocess materials and filter out hard impurities.
     • Choose high-strength materials or reduce the load.

2、 Fixed rotor system malfunction

1. Wear or blockage of the fixed rotor
   • reason：
     • The material contains corrosive components (such as strong acids and bases) that accelerate metal corrosion.
     • The material viscosity is too high or the particles are too large, causing jamming.
     • Long term operation without cleaning, residue solidification and blockage of gaps.
   • Solution：
     • Choose corrosion-resistant materials such as stainless steel and ceramic coatings.
     • Preprocess materials, control particle size and viscosity.
     • Regularly disassemble and clean, soak in solvents to remove residues.
2. The cutting effect decreases
   • reason：
     • The clearance between the stator and rotor expands due to wear, and the shear force weakens.
     • Insufficient speed (such as frequency converter failure or unstable voltage).
     • Changes in material formula (such as decreased viscosity or reduced solid content).
   • Solution：
     • Adjust the clearance between the stator and rotor or replace with new components.
     • Check the parameters of the power supply and frequency converter to ensure stable speed.
     • Optimize material formula and match equipment performance.

3、 Sealing system malfunction

1. Leakage (liquid or gas)
   • reason：
     • Mechanical seal wear or improper installation can cause the sealing surface to fail.
     • Axis eccentricity or vibration can damage the sealing structure.
     • Insufficient sealing fluid pressure or incorrect selection (such as high-temperature materials requiring high-temperature resistant sealing).
   • Solution：
     • Replace the seal and adjust the installation accuracy.
     • Correct the coaxiality of the axis and reduce vibration.
     • Select suitable sealing fluid and sealing materials (such as fluororubber, polytetrafluoroethylene).

4、 Electrical control system malfunction

1. The motor cannot start or stops frequently
   • reason：
     • Power failure (such as phase loss, low voltage).
     • Overload protection device triggered (such as excessive current or high temperature).
     • Poor contact or damaged components in the control circuit.
   • Solution：
     • Check the power supply to ensure three-phase balance.
     • Identify the cause of overload (such as material blockage or mechanical failure).
     • Inspect the control cabinet and replace damaged relays or sensors.
2. Unstable or fluctuating rotational speed
   • reason：
     • Inverter parameter setting error (such as improper PID adjustment).
     • Sensor malfunction (such as damaged speed encoder).
     • Sudden changes in mechanical load (such as changes in material density).
   • Solution：
     • Re calibrate the parameters of the frequency converter and optimize the control logic.
     • Replace or calibrate the sensor.
     • Stable material supply to avoid sudden changes in flow rate.

5、 Auxiliary system malfunction

1. Cooling system failure
   • reason：
     • Insufficient coolant or blocked circulation.
     • Dust accumulation in the radiator or fan malfunction.
   • Solution：
     • Add coolant and clean the circulation pipeline.
     • Clean the radiator and inspect the fan motor.
2. Poor or blocked feeding
   • reason：
     • Insufficient pumping capacity (such as centrifugal pump cavitation).
     • Unreasonable pipeline design (such as too many bends, too small diameter).
     • Material precipitation or agglomeration.
   • Solution：
     • Select the appropriate pump type and adjust the inlet pressure.
     • Optimize pipeline layout to reduce resistance.
     • Preprocess materials to prevent sedimentation.