What is the maintenance method for the melt pump of the blown film machine?

The maintenance methods of the melt pump in a film blowing machine are crucial for ensuring the stable operation of the machine and prolonging the service life of the melt pump. Here are some key maintenance procedures:

I. Daily Inspection and Maintenance

Regular Check of Pump Outlet Pressure:

Regularly inspect the pump outlet pressure to ensure it operates within the normal range, avoiding overpressure that could damage the pump body.

Inspection of Pump Fastening Bolts:

Periodically check if the fastening bolts of the pump body and accessories are loose. Tighten them promptly if found loose to prevent leaks or mechanical failures.

Listening for Abnormal Sounds in the Pump:

Monitor the pump for any noises or abnormal sounds. If detected, immediately shut down the pump for inspection and troubleshooting.

Temperature Check of Bearings and Housing:

Regularly check the temperature of bearings and the housing to ensure they are within the normal range. Excessive temperature may indicate poor lubrication or bearing damage.

Inspection of Axial Seal:

Regularly inspect the sealing effect of the axial seal to ensure no leakage occurs. If leakage is found, replace the seals or adjust the seal gland promptly.

Power Supply Check:

Check the power plug, internal wiring, power switch, and grounding resistance to ensure the electrical system operates safely.

II. Regular Cleaning and Maintenance

Pump Body Cleaning:

Regularly disassemble the pump body for cleaning to remove residual materials and dirt. Use appropriate solvents during cleaning to avoid damaging the pump body material.

Lubricant Replacement:

Periodically inspect and replace the bearing lubricant to ensure good lubrication. The replacement interval should be determined based on the equipment manual or actual operating conditions.

Inspection and Replacement of Seals:

Regularly inspect the wear of seals and replace them promptly if worn. Ensure the sealing surface is clean and free from scratches when replacing seals, and install them correctly.

III. Precautions

Cold Installation:

When installing the melt pump in a cold state, provide hinged supports on the piping to prevent displacement caused by temperature rise, which could lead to uneven force on the pump body.

Thermal Alignment of Coupling:

The coupling must undergo thermal alignment after the pump body warms up to ensure no additional torque is generated during operation.

Avoiding Sudden Speed Increase:

When starting the pump, gradually increase the speed without forming pressure at the outlet to prevent premature damage to the shaft or bearings.

Regular Replacement of Melt Filters:

Replace the melt filters regularly to prevent impurities in the melt from clogging the filters and affecting the normal operation of the pump.

Handling Long-term Idle Conditions:

If the melt pump is not used for an extended period, disassemble it for cleaning, reassemble it, and store it in a dry, clean environment to prevent solidification or cracking of the melt, which could lead to poor bearing lubrication and pump damage.

By implementing these maintenance methods, the stable operation and extended service life of the melt pump in the film blowing machine can be ensured. Additionally, it is crucial to regularly train operators to enhance their awareness and skills in maintaining the equipment.

Email: info@battemachinery.com

WhatsApp: +86 158 38331071

Any questions about our products, please feel free to contact us! We promise you high-end products and first-class service.Look forward to our cooperation!!!