Regular Maintenance Checklist for Briquette Extruder

Briquette extruders operate continuously under high pressure, high temperature and heavy friction.

Daily minor maintenance avoids unexpected shutdowns, while systematic periodic maintenance is critical to extend equipment service life, stabilize output and cut major overhaul costs.

Many workshops experience degrading equipment performance, unstable briquette forming and frequent blockages, mostly due to inadequate scheduled maintenance.

Below is the complete periodic maintenance standard based on real factory operation rules, ready for direct implementation on site.

The screw propeller is the fastest-wearing and most critical component of the extruder.

Long-term material extrusion causes blade thinning, slipping and insufficient extrusion pressure, which directly lowers briquette density.

Meanwhile, regularly check the inner surface of the forming sleeve.

Watch for grooves, scratches and reduced smoothness.

Severely worn inner sleeves lead to loose, eccentric and cracked briquettes.

Timely grinding or replacement is required to maintain stable extrusion pressure.

Bearings, transmission components, reducer and pulley shafts require periodic lubrication and oil replacement.

Long-term high-temperature operation causes grease caking and oil shortage.

Insufficient lubrication triggers overheated bearings, abnormal noise, jamming and bearing seizure.

Timely refilling and oil change greatly reduce mechanical wear for smoother operation and lower noise.

The extruder generates strong vibration during operation.

Prolonged running loosens bolts, shifts the machine base and misaligns the forming sleeve.

Carry out a full weekly inspection on:

main frame fixing bolts, flange screws, foundation anchor bolts and discharge port fasteners.

Retighten all loose hardware.

Unaddressed structural looseness results in eccentric vibration, uneven briquette extrusion and accelerated component wear.

In serious cases, the sleeve and screw propeller will suffer impact damage.

Regularly clear dust accumulated on the motor and wiring.

Keep electrical circuits dry and tidy.

Check cables for aging, abrasion and loose connections.

Monitor motor operating temperature and current to avoid prolonged overload operation.

Also verify the temperature control system and heating rings.

Ensure accurate temperature reading.

Malfunctioning temperature control leads to abnormal heating and poor briquette forming quality.

Basic daily cleaning only removes surface residues.

Periodic maintenance requires deep cleaning of hardened powder, damp buildup and solidified debris inside the machine chamber, hopper and forming sleeve.

Long-term accumulated residues block material flow gaps.

This creates heavy startup resistance, frequent blockages and defective forming.

Deep cleaning guarantees smooth feeding and stable extrusion pressure.

Regularly check belt tension and wear condition.

Loose belts slip, causing insufficient power and unstable extrusion speed.

Replace heavily worn belts immediately.

Inspect transmission clearance to ensure stable power transfer without slipping or speed loss.

Adjust working temperature and feeding speed regularly according to seasonal changes and raw material moisture.

Equipment characteristics shift slightly after long continuous running.

Fine-tune parameters periodically to sustain optimal forming conditions and avoid mass production of cracked, hollow or defective briquettes.

Seven core items of regular briquette extruder maintenance:

Strict adherence to scheduled maintenance drastically reduces breakdown frequency.

Stable forming and consistent output help save massive maintenance expenses and production downtime losses.