The operation and maintenance of the spiral dust removal and cleaning machine (usually referring to the dust removal system including the spiral conveyor) need to be comprehensively managed from five dimensions: operation specifications, daily inspections, regular maintenance, safety protection, and emergency response. The specific measures are as follows:
1、 Operating standards
Start and stop sequence
Start: First, turn on the screw conveyor motor, then start the vibration cleaning device (such as the air compressor of the pulse bag filter), and finally start the exhaust fan or blower.
Shutdown: First stop the exhaust fan or blower, wait for all filter bags to be cleaned before stopping the vibration device, and finally stop the screw conveyor 5-10 minutes after the exhaust fan stops.
Empty load requirement: The screw conveyor needs to be started with no load, and the material needs to be emptied before stopping to avoid overloading the driving device.
Feed control
When feeding, the speed should be gradually increased to the rated conveying capacity to maintain uniform feeding and prevent material accumulation.
It is strictly prohibited to mix hard or block materials to avoid jamming the spiral blades or damaging the equipment.
2、 Daily inspection
Inspection of connection parts
Check daily whether the connecting bolts and flanges are loose, and whether the pipes and lines are neat to prevent air and dust leakage.
Focus on inspecting the screws between the spiral tube and the connecting shaft. If any looseness or detachment is found, immediately stop the machine for handling.
Running status monitoring
Monitor the motor current, voltage, and speed to ensure they are within the rated range.
Listen to the sound of the equipment running, without any abnormal vibration or periodic jamming sound.
Check the bearing temperature (head, tail, and middle end bearing temperature rise ≤ 70 ℃) and whether the lubricating grease is sufficient.
leak test
Ensure uniform feeding at the ash inlet of the screw conveyor to prevent uneven loading.
Check the wear of the ash hopper wind deflector and arc plate, and promptly eliminate leakage points.
3、 Regular maintenance
Lubrication maintenance
Gearbox: Replace lubricating oil (such as gasoline engine lubricating oil H-8S-8L) every 3-6 months.
Bearing box: Supplement lithium based grease every half month.
Lifting bearings: Disassemble and clean every 3-5 months, immerse in melted lubricating grease, and reassemble.
High temperature environment: Zn2 sodium based grease (GB492-77) is used, and a small amount of grease is added to the self-lubricating bearing.
Cleaning and anti-corrosion
Clean the equipment surface and work area weekly to maintain cleanliness both inside and outside.
Regularly paint and protect exposed metal parts such as stairs, platforms, and vibration protection covers to prevent rusting.
Component replacement
Reserve spare parts (such as filter bags, plates, and wires) according to the consumption pattern, and prepare key components according to the quota.
Regularly check the wear of spiral blades, and replace them if they are severely deformed or affect production.
4、 Security protection
personnel security
Operators must be trained and qualified before taking up their posts. It is strictly prohibited to loosen or tighten bolts of rotating parts during operation.
Before entering the equipment for internal maintenance, it is necessary to remove dust and replace residual gases to ensure that the content of harmful gases such as carbon monoxide is reduced to a safe limit.
Heatstroke prevention measures should be taken for operations in high-temperature environments, and protective equipment should be equipped for hazardous gas environments.
Equipment safety
Install explosion-proof valves or safety switches, and regularly remove oil sludge and dirt from compressed air pipelines.
Install protective covers on the transmission components of the vibration device and ash conveying equipment to prevent bolts from loosening or chains from breaking and injuring people.
When the machine is shut down for a long time, keep the ash hopper heating device continuously in operation to prevent ash accumulation and agglomeration.
5、 Emergency response
fault downtime
When the spiral agitator is stuck or the equipment vibrates violently, immediately stop the machine for handling, and forced operation is strictly prohibited.
In the event of a leak or fire, activate the emergency plan, cut off the power supply, and use firefighting equipment.
Long term shutdown management
Before stopping the machine, remove the accumulated dust in the ash hopper and clean the residual dust in the main body and ash discharge system.
Run the vibration and ash removal device for 1 hour per week to prevent rusting of rotating parts.
Dry the motor, insulation sleeve and other components to prevent moisture.