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fuyangby@126.com
86 15188770013
The core safety principles of "opening the sealing water first, then starting the motor" and "prohibiting maintenance during operation" must be strictly followed, which is the key to preventing leakage and personal injury.
Slurry pumps are widely used in industries such as mining, metallurgy, and power to transport high concentration slurry containing solid particles. The working environment is harsh, and improper operation can easily cause leakage, blockage, mechanical damage, and even electric shock accidents. Therefore, developing and implementing standardized safety operating procedures is crucial for ensuring personnel safety and equipment stability.
Pre-operation check
Before starting, the following inspection items must be completed to ensure that the equipment is in a runnable state:
Confirm that the power supply is stable, the grounding is good, and the cable is not damaged.
Check that the lubricating oil is sufficient, the oil quality is clean, and the cooling/sealing water supply is normal.
Manually turn the rotor at least once to confirm that it rotates flexibly and there is no jamming phenomenon.
Check that the inlet and outlet pipelines are unobstructed, the valve positions are correct, and there are no leakage hazards at the connections.
Check the wear of overcurrent components such as impellers, protective plates, and packing, and replace them if necessary.
Ensure that the work area is clean, unobstructed by debris, and the safety passage is unobstructed.
Operators should wear safety helmets, protective goggles, gloves and other personal protective equipment.
(Additional explanation) Some materials emphasize that female workers need to tuck their braids into their hats, strictly prohibit drinking alcohol before work, and maintain a good mental state when on duty.
Startup and Running Operations
1. Open the sealing water: First, open the shaft sealing water or packing sealing water system, which must be completed before the motor starts to prevent seal failure caused by dry grinding.
2. Start the motor: Press the start button and observe the ammeter. The current should not exceed the rated value. If there is an abnormality, stop the machine immediately.
3. Open the inlet valve: Slowly open the inlet valve and gradually feed in to avoid sudden increase in load causing motor overload.
4. Monitoring operation: Observe sound, vibration, temperature, and pressure. If abnormal noise, severe vibration, or high temperature rise is found, emergency shutdown should be carried out.
It is strictly prohibited to touch rotating parts or perform any maintenance or adjustment with hands during operation.
Pay close attention to changes in the discharge volume. If any deficiencies are found, it is necessary to investigate issues such as the tightness of the V-belt, impeller clearance, and wear of the packing.
Maintain communication and coordination with other positions, and control flow according to process requirements.
Shutdown and subsequent processing
Gradually close the inlet valve, reduce the slurry intake, and ensure smooth unloading of the pump.
Cut off the power and confirm that the motor has completely stopped running.
Close the outlet valve to prevent the medium from flowing back.
Check after shutdown:
Is the leakage of the packing serious? If necessary, replace the packing.
Check for any abnormalities in pipelines, valves, motors, and pump bodies, and promptly report any problems for repair.
Utilize parking time for cleaning and maintenance, fill out work logs, and keep records of shift handover.
(Additional explanation) It is not allowed to shut down the power directly with load in non emergency situations to avoid damaging the motor or pipeline system.
Daily maintenance and troubleshooting
Daily maintenance focus:
Regularly lubricate the bearings and use lithium grease No.2 or No.3.
Clean the filter screen and remove blockages from the pipeline.
Check the tightening of bolts to prevent looseness and detachment.
Replace severely worn impellers, protective plates, and other overcurrent components.
Common fault emergency handling:
Abnormal vibration or noise: Immediately stop the machine and check the balance of the impeller, bearing status, and loose foundation.
Serious seal leakage: Check the tightness of the packing or mechanical seal status after shutdown.
Motor overheating: Check the load, ventilation, heat dissipation, and lubrication conditions.
Pump not feeding: Check if the suction end is blocked and if the air is completely expelled.
All maintenance operations must be carried out under the premise of power outage, hanging, and locking the power switch, and operated by professional personnel.
Conclusion
Strictly implementing the full process operation of "pre start inspection → boiling water before starting the pump → operation monitoring → slow shutdown → maintenance after shutdown" is the core to ensure the safe operation of the slurry pump. Operators must hold certificates and be familiar with equipment structure and emergency procedures. Enterprises should also regularly organize training and drills, establish a hidden danger reporting reward mechanism to improve overall safety levels.
This article originates from https://www.fuyangpumps.com/news/538.html. Please indicate the source when reprinting.
(Editor in charge: Slurry Pump https://www.fuyangpumps.com/)
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