The normal working pressure of Roots blower is determined based on specific working requirements, so its normal working pressure range may vary. The following is a detailed analysis of the normal working pressure of Roots blower:
1、 Normal working pressure range
Generally speaking, the working pressure range of Roots blowers is between 9.8kPa and 200kPa. This scope is determined based on the design and practical application requirements of the fan. Among them:
1. Low pressure Roots blower: The working pressure is usually between 9.8kPa and 58.8kPa. This type of blower usually adopts a single oil tank structure and uses air cooling for cooling.
2. High pressure Roots blower: The working pressure exceeds 58.8kPa and can reach 200kPa. High pressure Roots blowers typically adopt a dual oil tank structure and require water cooling for cooling.
2、 Factors affecting work pressure
The working pressure of Roots blower is affected by various factors, mainly including:
1. Fan speed: The higher the speed, the greater the pressure usually generated. An increase in rotational speed will increase the impeller's rotational speed, thereby increasing the frequency of gas compression and pushing, leading to an increase in pressure.
2. Impeller shape and size: The shape and size of the impeller have a direct impact on the compression and pushing effect of the gas. Larger sized or specifically shaped impellers may generate higher pressure.
3. Import and export design: Reasonable import and export design can optimize gas flow, thereby affecting pressure generation.
3、 Considerations in practical applications
In practical applications, the following factors need to be considered when selecting the pressure of a Roots blower:
1. System requirements: Determine the required working pressure based on the requirements of the gas delivery system. For example, in a sewage treatment plant, a Roots blower with pressure is required to push air into the aeration tank to ensure sufficient oxygen supply.
2. Equipment parameters: Refer to the product manual or equipment parameters to understand the specific working pressure range and performance characteristics of the fan.
3. Reliability: Ensure that the pressure range of the selected fan meets the requirements of the system, and consider the reliability and durability of the fan.
4、 Precautions
1. Avoid overload operation: Roots blowers may burn out the motor during long-term overload operation, so it should be ensured that the working pressure does not exceed the rated pressure of the blower.
2. Regular maintenance and upkeep: Regularly maintain and upkeep the Roots blower, including checking the wear of bearings, gears, seals, and other components, as well as cleaning up dust and foreign objects.
3. Adjusting system pressure: To change the required pressure of the system, it can be achieved by adjusting the diameter of the Roots blower outlet. A larger diameter will reduce pressure, while a smaller diameter will increase pressure.
In summary, the normal working pressure range of Roots blower is between 9.8kPa and 200kPa, depending on factors such as fan design, speed, impeller shape and size, and inlet and outlet design. When selecting and using Roots blowers, the appropriate working pressure range should be determined based on actual application requirements and equipment parameters, and the reliable operation of the blower should be ensured.
