The adjustment of the clearance of Roots blower is a key step to ensure its stable performance and operation. The following provides a graphical explanation and steps for adjusting the clearance of Roots blower:
1、 Illustrated Explanation
Although it is not possible to provide graphic images directly, understanding can be assisted through text descriptions combined with imagination or drawing software.
1. Impeller clearance: The clearance that needs to be maintained between impellers to ensure the normal operation of the fan. Excessive or insufficient clearance can affect the performance of the fan.
2. Axial clearance: When assembling wall panels, the total axial clearance should be ensured to be within the standard range, and the clearance at both ends should be uniform by adjusting the thickness of the bearing bottom gasket.
3. Radial clearance: It is usually ensured through precise positioning of the casing and side plate, and users generally do not need to adjust it. If adjustment is required, it can be achieved by replacing or adjusting the gasket between the casing and the side panel.
2、 Adjustment steps
1. Shutdown and check:
Before adjusting the gap, first ensure that the fan has been shut down and the power supply has been disconnected to ensure proper operation.
2. Disassemble relevant components:
According to the structure of the fan, it may be necessary to disassemble some components for gap adjustment.
This usually includes disassembling the air inlet, air outlet, bearing cover, etc.
During the disassembly process, it is important to record the position and sequence of each component for future reinstallation.
3. Prepare tools and materials:
When adjusting the gap, it is necessary to prepare corresponding tools and materials, such as feeler gauges, screwdrivers, adjusting washers, etc.
Ensure that the tools are complete and in good condition for smooth adjustment.
4. Adjust the impeller clearance:
Rotate the impeller to a position 45 degrees from the horizontal direction (or adjust according to specific model requirements).
Align the driven gear part with the driving gear mark and press it onto the shaft.
Install the gear retaining ring, stop washer, and locking nut in sequence.
Adjust the inner and outer conical surfaces of the gear ring, hub, and shaft in the axial direction to achieve the purpose of adjusting the clearance between the impeller.
Usually, the clearance between impellers should be controlled within a range (such as 0.29 to 0.34mm).
5. Adjust axial clearance:
When assembling wall panels, the first step should be to ensure that the total axial clearance is within the standard range.
By adjusting the thickness of the bearing bottom gasket, ensure even clearance at both ends.
When assembling the wall panel, the position of the impeller shaft can be adjusted by adjusting the screws on the front wall panel to ensure a uniform distribution of spacing between the two ends.
6. (Optional) Adjust radial clearance:
The radial clearance is usually ensured by precise positioning of the casing and side plate, and users generally do not need to adjust it.
If adjustment is required, it can be achieved by replacing or adjusting the gasket between the casing and the side panel.
7. Reinstall and test:
After the gap adjustment is completed, reinstall all components according to the disassembly records.
Restart the fan and observe its operation.
Check the operating status of the rotor, including whether it rotates smoothly and whether there are any abnormal sounds.
Use tools such as feeler gauges to measure the gap value between the rotor and the casing again, ensuring that the gap value meets the requirements.
3、 Precautions
1. Following the manufacturer's recommendation: Different models of Roots blowers may have different clearance adjustment requirements. When adjusting the gap, it is important to refer to the manufacturer's technical manual or maintenance guide and follow their recommended steps and methods.
2. Use specialized tools: The gap adjustment of Roots blower requires the use of specialized adjustment tools or equipment. Using inappropriate tools may result in inaccurate adjustments or damage to the equipment.
3. Attention to operation: Roots blower is a high-speed operating equipment, and its gap adjustment needs to be carried out when the equipment is stopped and powered off. When adjusting the gap, it is necessary to follow the operating procedures to ensure the safety of personnel and equipment.
4. Regular inspection and adjustment: Adjusting the clearance of Roots blowers is not a one-time task. The gap may change with the use and wear of the equipment. It is recommended to regularly check and adjust the clearance of the fan to ensure the long-term stable operation of the equipment.
By following the above steps and precautions, it is possible to ensure the smooth adjustment of the clearance of the Roots blower, thereby ensuring the stable performance and reliable operation of the blower.
