For those in the extrusion, pelletizing, and film production industries, melt pump failures can seriously impact mass production! Here’s a compilation of high-frequency issues and precise solutions you can apply directly on-site.
Melt Pump Fails to Operate
Causes: Seized shaft and bushing; equipment has not reached the melt temperature; insufficient motor torque to drive the load.
Solution: Disassemble and clean the pump housing; repair the seized bushing; thoroughly heat and maintain the temperature at the process melt temperature; replace with a higher-power motor or adjust the gear ratio to increase output torque.
Abnormal Equipment Temperature (Too High/Too Low)
Causes: Sensor malfunction or heater failure, leading to instability in the temperature control system.
Solution: Inspect temperature control probes and heating components one by one, replacing damaged parts promptly; fine-tune the heating power to ensure a constant melt temperature.
Melt Pump Leakage
Cause: Failure of shaft seals or cover plate seals; high-temperature operating conditions cause seal leakage.
Solution: Circulate water through the seal area to cool it down; replace packing and seals; tighten cover plate screws and apply high-temperature sealant to enhance sealing performance.
Excessive Pump Body Temperature Rise
Causes: Faulty thermocouples or heating elements; excessive structural friction within the pump body; excessively high material viscosity.
Solution: Replace faulty instrument components; optimize the cooling system and modify the pump body structure; replace helical gear components to reduce operational friction heat.
Resolving these issues effectively reduces downtime, stabilizes extrusion pressure, and ensures a more stable production line!
Email: sale@meltpump.com
WhatsApp: +86 158 3833 1071
