The impact of Roots blower impeller is a headache for many users, which not only affects the service life of the equipment, but also may cause hidden dangers. Today, let's talk about the root cause and solution of this troublesome matter, to help you deal with it easily!
**Common cause analysis**
1 * * Installation deviation * *: The clearance between the impeller and the housing is not calibrated properly, and slight misalignment during operation can cause a "hard collision". Novice installation may easily overlook this point, and it is recommended to repeatedly measure the gap with a feeler gauge.
2 * * Bearing wear * *: After the bearing ages, the clearance increases, and the impeller will shift axially or radially, hitting the casing like getting drunk. Be alert when you hear a 'clang' sound!
3 * * Foreign object intrusion * *: Small objects such as pipeline welding slag and screws are sucked into the fan, instantly jamming the impeller. Installing filters is a cost-effective preventive measure.
4 * * Dynamic balance failure * *: The impeller is stained with dust or corroded, resulting in uneven weight and increased vibration during high-speed rotation, ultimately leading to "deviation" and impact. Regular cleaning and dynamic balance testing are important.
**Solution steps**
1 * * Shutdown inspection * *: First, cut off the power and manually turn the impeller to feel if there is any jamming or friction.
2 * * Measure Gap * *: Use a dial gauge to check the gap between the impeller and various parts of the housing, and adjust it according to the standard value in the instruction manual (usually 0.2-0.4mm).
3 * * Replace bearings * *: If there is obvious shaking, remove the bearings and check for wear marks. It is recommended to replace them in pairs and apply high-temperature lubricating grease.
4 * * Cleaning the pipeline * *: Disassemble the inlet and outlet flanges and use an endoscope to check for any residual foreign objects, especially focusing on welding conditions.
**Daily maintenance tips**
-Use a listening stick close to the casing every month to monitor for any abnormal friction sounds;
-Clean the intake filter every quarter to avoid dust accumulation that affects balance;
-Perform professional dynamic balance calibration once a year, especially for equipment in dusty environments.
Remember, impeller impact is often caused by small problems accumulated, and paying more attention can save on major maintenance costs! If you can't handle it yourself, you should contact the manufacturer's after-sales service in a timely manner~
