What are the operation and maintenance measures for spiral dust removal and cleaning machines

The operation and maintenance of the spiral dust removal and cleaning machine (usually referring to the dust removal system including the screw conveyor) need to be comprehensively managed from five dimensions: 

operation norms, daily inspection, regular maintenance, safety protection and emergency response. The specific measures are as follows:

I. Operating Specifications

Start-up and shutdown sequence

Startup: First, start the motor of the screw conveyor, then start the vibration cleaning device (such as the air compressor of a pulse bag filter), and finally start the exhaust fan or blower.

Shutdown: First, stop the exhaust fan or blower. After all the filter bags have been cleaned, stop the shaking device. Finally, stop the screw conveyor 5 to 10 minutes after the exhaust fan has been shut down.

No-load requirement: The screw conveyor must be started without load. Before shutting down, all materials should be drained to prevent the drive unit from 

overloading.

Feed control

When feeding materials, the speed should be gradually increased to the rated conveying capacity to ensure uniform feeding and prevent material 

accumulation.

It is strictly prohibited to mix in hard or lumpy materials to avoid jamming the spiral blades or damaging the equipment.

Ii. Daily Inspection

Inspection of connection parts

Check every day whether all connecting bolts and flanges are loose, and whether the pipelines and lines are neat to prevent air and dust leakage.

Pay special attention to checking the screws between the spiral tube and the connecting shaft. If any loosening or detachment is found, stop the machine 

immediately for handling.

Operation status monitoring

Monitor the motor current, voltage and rotational speed to ensure they are within the rated range.

Listen to the operating sound of the equipment. There should be no abnormal vibration or periodic jamming sounds.

Check the bearing temperature (the temperature rise of the bearings at the head, tail and middle end of the machine is ≤70℃) and whether the lubricating 

grease is sufficient.

Sealing performance inspection

Ensure uniform feeding at the ash inlet of the screw conveyor to prevent uneven loading.

Check the wear of the ash hopper wind shield and arc plate, and eliminate the leakage points in time.

Iii. Regular maintenance

Lubrication maintenance

Reducer: Replace the lubricating oil (such as gasoline engine lubricating oil H-8S-8L) every 3 to 6 months.

Bearing housing: Replenish lithium-based grease every two weeks.

Lifting bearings: Disassemble and clean them every 3 to 5 months, immerse them in melted grease, and then reassemble.

High-temperature environment: Use Zn2 sodium-based grease (GB492-77), and add a small amount of grease to self-lubricating bearing shells.

Cleaning and anti-corrosion

Clean the surface of the equipment and the workplace every week to keep both inside and out clean.

Regularly paint exposed metal parts such as stairs, platforms, and vibration guards to prevent rust.

Component replacement

Reserve spare parts (such as filter bags, plates, and wires) according to the consumption pattern and prepare key components in accordance with the quota.

Regularly inspect the wear condition of the spiral blades. They need to be replaced when they are severely deformed or affect production.

Iv. Safety Protection

Personnel safety

Operators must be trained and qualified before taking up their posts. It is strictly prohibited to loosen or tighten the bolts of rotating parts during operation.

Before entering the interior of the equipment for maintenance, it is necessary to completely remove the dust and replace the residual gas to ensure that

 the content 

of harmful gases such as carbon monoxide is reduced to a safe limit.

Heatstroke prevention measures should be taken when working in high-temperature environments, and protective equipment should be provided in

 environments with harmful gases.

Equipment safety

Install explosion-proof valves or safety switches and regularly remove oil sludge and dirt from the compressed air pipelines.

Protective covers are added to the transmission components of the shaking device and ash conveying equipment to prevent injuries from loose bolts or 

broken chains.

When the equipment is shut down for a long time, keep the ash hopper heating device in continuous operation to prevent ash accumulation and caking.

V. Emergency Response

Fault shutdown

When the screw auger gets stuck or the equipment vibrates violently, stop the machine immediately for handling. Forced operation is strictly prohibited.

In the event of leakage or fire, activate the emergency response plan, cut off the power supply and use fire extinguishing equipment.

Long-term downtime management

Before the machine stops, drain the accumulated ash in the ash hopper and remove the residual dust from the main body and the ash discharge system.

Run the shaking and ash discharge device for one hour every week to prevent the rotating parts from rusting.

Dry the motor, insulating bushings and other components to prevent moisture.