The Underwater pelletizing machine stop or malfunction reasons during operation


Main motor system failure
1. The main motor torque is too high or too low;
2. The main motor speed is too low;
3. The main motor bearing temperature is too high;
4, the main motor winding temperature is too high;
5. The temperature of the inlet and outlet of the main motor water-cooled cooler is too high;
6. The main motor bearing lubricating oil pump outlet flow is too low;
7. The outlet pressure of the main motor bearing lubricating oil pump is too low;
8, the main motor water-cooled cooler water leakage is too high.
Transmission system failure
1. The gearbox shift lever position is deviated;
2. The instrument wind pressure of the friction clutch is too high;
3. The speed difference of the friction clutch is too large;
4. The outlet pressure of the gearbox lubricating oil pump is too low;
5. The oil temperature at the outlet of the gearbox lubricating oil pump is too high;
6, friction clutch internal faults, etc.
Extrusion granulator screw process section failure
1. The melt pressure before and after the throttle valve is too high;
2. The melt pressure of the machine head is too high;
3. The melt pressure difference before and after the change of the screen is too large;
4, driving valve rotation failure, etc.
Underwater pelletizing system failure
1. The temperature of the grain cutting motor winding is too high;
2. The speed of the pelletizer is too low;
3. The torque of the pelletizer is too high;
4, the particle water bypass automatic switching failure;
5. The particle water pressure is too high or too low;
6, the particle water flow is too low;
7. The clamping bolt of the pelletizer is not tight;
8. The granulating chamber bypass water valve is not closed;
9. The hydraulic clamping pressure of the pelletizer is too low;
10, the cutting machine motor failure;
11, hydraulic cutter axial feed pressure is too low.

Among the above-mentioned causes of failure, there are more frequent occurrences:
The main motor torque of the main motor system is too high or too low;
The friction clutch of the transmission system is faulty;
The melt pressure of the extrusion granulator screw process section system is high;
Underwater pelletizer system failure, etc.

 

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