When using flexible low crushing and deburring equipment, comprehensive management should be carried out from five aspects: operation specifications, material handling, equipment monitoring, safety protection, and maintenance and repair. Specific precautions are as follows:
1、 Operating standards
Pre startup inspection
Confirm that all bearings, transmission components, and reducers have sufficient lubricating grease to avoid component damage caused by dry grinding.
Check that there are no foreign objects (such as ore, iron blocks, etc.) in the crushing chamber to prevent electrical tripping or mechanical failure caused by load starting.
Ensure that safety protection devices (such as protective covers and limit switches) are intact, and that the distance between the cover and rotating parts is ≥ 50mm to prevent personnel from coming into contact with hazardous areas.
Startup sequence
Start the dust removal system first, run for 5 minutes, and then start the main equipment to avoid dust accumulation and potential safety hazards.
Press the "jog" button during startup to test run, observe whether the motor direction is correct, confirm that there are no blockages or abnormal sounds, and then start running officially.
Shutdown operation
Stop feeding before shutting down, allowing the equipment to continue running and discharge residual materials to avoid material accumulation and blockage.
After turning off the motor power, clean the surface of the equipment and the work area to maintain a clean environment.
2、 Material handling
Material Screening
The hardness and particle size of the crushed materials must meet the equipment design requirements, and it is strictly prohibited to mix non crushable materials such as metal blocks, large concrete blocks, and wood.
The moisture content of the material should be ≤ 15% to prevent adhesion and blockage of the equipment. If necessary, perform preprocessing (such as screening and impurity removal) to ensure material uniformity.
Feed control
The feed should be small particle materials or finished products to avoid loosening of components due to vibration during the initial operation of the equipment.
Slowly pour in the material, control the feeding speed to prevent equipment blockage or overload.
3、 Equipment monitoring
Monitoring of operating parameters
Motor current: Check every 15 minutes and do not exceed 85% of the rated current. If the current suddenly increases, the feeding amount should be immediately reduced to investigate the cause.
Bearing temperature: Check every 30 minutes, temperature ≤ 70 ℃ (above ambient temperature ≤ 40 ℃). When the temperature exceeds the limit, it is necessary to stop the machine for inspection, clean the oil circuit or replace the bearings.
Broken gap: Check once per hour to ensure compliance with product particle size requirements. When there is a deviation, the machine needs to be stopped for adjustment to prevent the particle size from exceeding the standard.
Lubrication system: Check the oil pressure (0.1-0.2MPa) and oil volume every hour, and check the blockage of the oil pump and oil circuit when the oil pressure is insufficient.
exception handling
If any abnormal sound, vibration or leakage is found during operation, the machine should be stopped immediately for inspection, and the fault should be eliminated before restarting.
Regularly clean the bonding material on the inner wall of the crushing chamber to prevent blockage and affect the crushing effect.
4、 Security protection
personal protection
Operators are required to wear safety helmets, dust masks, goggles, and anti smashing work shoes. Long hair should be tucked into the safety helmet.
Prohibit wearing scarves, gloves (near rotating parts), and other accessories that are prone to getting caught up.
Equipment safety
Ensure that the motor wiring is firm, the grounding is reliable (grounding resistance ≤ 4 Ω), and the insulation resistance is ≥ 0.5M Ω.
The control button and emergency stop switch are responsive, and the indicator light is displaying normally. The parameters of overload protection devices (thermal relays, overcurrent protectors) need to be matched with the motor power.
environmental safety
There are no obstacles, flammable and explosive materials within 5 meters around the equipment, and the passage is unobstructed.
Adequate lighting (illumination ≥ 300Lux), dust concentration ≤ 2mg/m ³ (when equipped with dust removal system, check the integrity of fans, pipelines, and filter bags).
Set warning signs such as "Caution Rotation" and "Must Wear Dust Mask".
5、 Maintenance and repair
regular maintenance
Regularly check the wear and tear of the equipment, replace vulnerable parts (such as jaw plates, plate hammers, rollers, etc.), and ensure that the wear does not exceed one-third of the original size.
Regularly maintain the transmission device, adjust the belt tension (press the middle of the belt to sink 10-20mm), and replace the aging belt.
Regularly clean the cooling system to ensure normal cooling water flow and pressure (inlet pressure of 0.2-0.3MPa).
Lubrication management
Each lubrication point (bearing, gearbox) has sufficient oil level (oil level at 1/2-2/3 of the oil gauge), and the oil quality is clean without emulsification or impurities.
The lubricating oil model must meet the requirements (lithium based grease is commonly used for bearings, medium load gear oil is used for gearboxes), and the deteriorated oil should be replaced regularly.
Maintenance safety
Before conducting maintenance, repair, and blockage clearing operations, power outage procedures must be completed, and hazardous work permit procedures must be obtained before entering the equipment for repairs.
Operators are required to wear protective equipment such as gas masks, assign dedicated personnel for supervision, and set up warning lines outside the work area.
Restore safety protection devices after maintenance to ensure safe operation of the equipment.