What are the specific methods to solve the mechanical failure of Roots blower?

According to the different mechanical failures of Roots blower, the following specific solutions can be taken:

Gear wear

Regular inspection of gears: establish a regular inspection system, such as a comprehensive inspection of gears every 500-1000 hours of operation. By observing the wear marks on the gear surface, measuring the tooth thickness and tooth profile tolerance of the gear, the wear degree of the gear can be judged.

Replace worn gear: When the gear is worn beyond the specified tolerance range, or there are serious damages such as tooth surface peeling and cracks, a new gear should be replaced in time. When replacing gears, choose products with the same model and specifications as the original gears, and ensure their quality meets the requirements. At the same time, we should pay attention to the installation accuracy of gears and install them in strict accordance with the installation instructions to ensure that the meshing clearance between gears is within the specified range.

Bearing damage

Improving lubrication conditions: Ensuring good lubrication of bearings is the key to prevent bearing damage. Check the oil level and quality of lubricating oil regularly, and change lubricating oil regularly according to equipment requirements. For example, for a common Roots blower, the lubricating oil can be changed every 2000-3000 hours. At the same time, ensure the cleanliness of lubricating oil and prevent impurities from entering the bearing.

Replace the bearing in time: once the bearing is found to be damaged, stop the machine and replace it immediately. When replacing the bearing, use special tools to avoid damaging the bearing and journal. When installing a new bearing, pay attention to the installation direction and accuracy of the bearing to ensure that the fit clearance between the bearing and the shaft and bearing seat meets the requirements. After the installation is completed, the bearing should be properly preloaded to ensure the normal operation of the bearing.

Impeller collides with wallboard

Adjust the clearance between the impeller and the wallboard: firstly, it is necessary to stop the machine and disassemble the related parts of the blower, such as the air inlet, the air outlet and the gear box, so as to accurately measure and adjust the clearance between the impeller and the wallboard. Measure the clearance between the impeller and the wallboard with a feeler gauge, and adjust the clearance to a suitable range according to the technical requirements of the equipment. Generally speaking, the radial clearance between the impeller and the wallboard is between 0.15 and 0.30 mm, and the axial clearance is between 0.20 and 0.40 mm..

Repair or replacement of deformed impeller: If the impeller is deformed due to long-term operation or other reasons, resulting in collision with the wallboard, it is necessary to repair or replace the impeller. For the slightly deformed impeller, cold correction or hot correction can be used to repair it, but the repaired impeller needs to be tested for dynamic balance and static balance to ensure its balance accuracy meets the requirements. For the severely deformed impeller, a new impeller should be replaced in time. When installing a new impeller, we should pay attention to the matching accuracy of the impeller and the shaft, as well as the installation position and direction of the impeller, so as to ensure that the gap between the impeller and the wallboard is uniform.