Regular maintenance of twin screw extruders

The inner wall of the cooling water pipe attached to the twin-screw extruder is easy to scale and the outside is easy to corrode and rust. Careful inspection should be done during daily maintenance. Excessive scale will block the pipeline, and the cooling effect will not be achieved. If the rust is serious, water will leak. In the daily maintenance, measures must be taken to remove scale and prevent corrosion. Check and adjust motors, control instruments, various pipes and working parts. If there is a sudden power failure during production, the main drive and heating stop. When the power supply is restored, each section of the barrel must be reheated to the specified temperature and kept for a period of time before the extruder can be started.

The basic of daily maintenance is to clean the machine and lubricate the various moving parts of the extruder. For example, there will be iron filings or other impurities from the gear grinding in the reduction box, check the wear of the gears and bearings and make a record. Clean the gears and replace the gearbox lubricating oil. Focus on checking the wear of the brushes of the DC motor that drives the screw, and regularly check whether the resistance value of the motor is above the specified value. In addition, check whether the connecting wire and other parts are rusted, and take protective measures. If the steering fullness of the instrument and pointer is found, check whether the contact between the thermocouple and other side lines is good. If the steering fullness of the instrument and pointer is found, check whether the contact between the thermocouple and other side lines is good.

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