How to maintain the magnetic suspension blower?

The maintenance of magnetic suspension blower is very important for its performance and service life. The following are the detailed maintenance contents:

I. Daily maintenance

observational check

Every day before and after the operation of the equipment, check the appearance of the blower for damage, including signs of cracks, deformation or corrosion in the shell. If the shell is found to be damaged, which may affect the sealing and protective performance of the equipment, the damaged parts should be repaired or replaced in time.

Check whether the connecting parts, such as pipe joints and flanges, are firmly connected. Ensure that the bolts and nuts are not loose to prevent gas leakage and other problems. If the connection is found to be loose, use a suitable tool (such as a wrench) to tighten it to the specified torque.

Operation parameter monitoring

Pay attention to the operating parameters of the blower in real time, such as speed, pressure, flow rate and temperature. Read these data through the monitoring system that comes with the equipment or the instrument on the control cabinet. For example, during normal operation, the speed of the magnetic levitation blower should be stable near the set value. If the speed fluctuates obviously, it may be a problem with the control system or the motor.

Compare the actual operating parameters with the rated parameters of the equipment, and analyze the reasons in time when abnormal parameters (such as high pressure or low flow) are found. This may be caused by pipe blockage, dirty filter or internal component failure. For simple problems, such as filter blockage, the filter can be cleaned or replaced in time to restore normal operation.

Cleaning work

Keep the surface of the equipment clean, and remove the dust and sundries on the surface of the blower. Excessive dust accumulation may affect the heat dissipation performance of equipment, especially the motor and control cabinet. Clean soft cloth or low-pressure air can be used to sweep the surface of the equipment, but dust should be avoided from entering the equipment.

Regularly clean the filters at the air inlet and air outlet. The cleanliness of the filter directly affects the air intake quality and the performance of the blower. According to the dust situation in the working environment, the filter is generally cleaned once every 1-2 weeks. If the working environment is dusty, it may need to be cleaned more frequently. When cleaning, you can take out the filter, rinse it with clear water and dry it naturally or dry it with compressed air before installing it back.

Second, regular maintenance (monthly or quarterly)

Lubrication system inspection (if any)

For some magnetic levitation blowers with auxiliary lubrication system, check the oil level and oil quality of lubricating oil. The oil level should be kept within the specified scale range, which can be checked by the oil level gauge. If the oil level is too low, replenish the lubricating oil that meets the equipment requirements in time.

Check the color and transparency of lubricating oil. Normal lubricating oil should be clear and transparent or slightly yellowish. If the lubricating oil is found to be black, turbid or smelly, it means that the lubricating oil may have deteriorated and needs to be replaced in time. Under normal circumstances, the lubricating oil should be replaced every 3-6 months, but the specific time interval should be determined according to the operating conditions and operating instructions of the equipment.

Electrical system inspection

Check whether the terminal of the motor is loose and oxidized. Loose wiring may lead to poor contact, increase resistance, and make the motor hot or even damaged. The oxidized terminal will affect the conductivity. If the terminal is found to be oxidized, professional electrical cleaners and tools can be used for cleaning and fastening.

Check whether the electrical components in the control cabinet, such as contactors, relays and capacitors, are working normally. Check the appearance of these components for signs of damage, overheating and discoloration. Infrared thermometer can be used to detect the temperature of electrical components, and the normal working temperature should be within the rated temperature range of components. If it is found that the temperature of the component is too high, the reason should be analyzed, which may be the overload or the failure of the component itself, and it needs to be dealt with in time.

Mechanical parts inspection

Check the working state of magnetic bearing system. Magnetic suspension bearing is the key component of magnetic suspension blower. The monitoring system is used to check whether the suspension clearance of the bearing is normal. Under normal circumstances, the bearing should be able to suspend stably and the clearance should be within the specified range. If the suspension gap is found to be abnormal, it may be that the control system is faulty or the bearing parts are worn, which requires further inspection and maintenance by professionals.

Check the abrasion of the impeller. Impeller may be worn due to friction with gas, impact of impurities and other reasons during long-term operation. The impeller surface can be viewed by disassembling part of the casing or using tools such as endoscope. If the impeller is seriously worn, it will affect the performance of the blower, so it is necessary to replace the impeller in time.

Third, the annual maintenance

Comprehensive disassembly inspection

To completely disassemble the magnetic suspension blower, in addition to the inspection items in the above-mentioned regular maintenance, it is also necessary to carry out a detailed inspection of the internal components of the equipment. Including checking the insulation resistance of the motor winding, using an insulation resistance tester to measure, the insulation resistance value should meet the technical requirements of the equipment. If the insulation resistance is too low, it may be that the motor winding is wet or the insulation is damaged, so it needs to be dried or the winding needs to be replaced.

Check all seals, such as shaft seals, gaskets, etc. After long-term use, the seal may age and deform, resulting in gas leakage. If the seal is found to be damaged, replace the seal that meets the specifications in time to ensure the tightness of the equipment.

Calibration and debugging

Calibrate the sensor and control system of the equipment. For example, pressure sensors and temperature sensors are calibrated to ensure the accuracy of their measurement. Professional calibration equipment can be used for calibration operation according to the operation manual of the equipment.

After reassembling the equipment, it should be debugged and run. During debugging, pay close attention to the operation parameters and state of the equipment to ensure that the equipment can run normally and stably. If problems are found, they should be adjusted and repaired in time until the equipment reaches the best running state.