Design scheme of Roots blower for pneumatic conveying of alumina powder
The design scheme of Roots blower for pneumatic conveying of alumina powder requires comprehensive consideration of multiple factors, including fan selection, performance parameters, control system, etc. Here is a detailed design plan based on these factors:
1、 Fan selection
Roots blower is the core equipment of pneumatic conveying system, and its selection needs to be determined based on factors such as the physical characteristics of alumina powder, conveying distance, conveying volume, and system pressure requirements.
1. Air volume and air pressure: Select the appropriate air volume and air pressure based on the conveying volume and distance of the alumina powder. The air volume should ensure the stable flow of alumina powder in the pipeline, while the air pressure should overcome the pipeline resistance to ensure that the alumina powder can reach the target position smoothly.
2. Speed and power: The speed and power of the Roots blower need to be matched according to the air volume, air pressure, and system efficiency. A higher rotational speed usually means greater air volume and pressure, but it can also increase power consumption and noise. Therefore, a balance needs to be made based on actual needs.
3. Structure type: Three blade Roots blower has smaller exhaust pulsation, lower noise, and smoother operation compared to two blade Roots blower, making it more suitable for pneumatic conveying of alumina powder.
2、 Performance parameters
1. Airflow: Calculate the required airflow based on the conveying volume of alumina powder, pipeline diameter, and conveying speed.
2. Wind pressure: Calculate the required wind pressure based on factors such as pipeline length, number of bends, valve resistance, and consider the margin.
3. Efficiency: Select Roots blowers with high selectivity to reduce energy consumption and operating costs.
4. Noise: Choose low-noise Roots blowers and consider implementing sound insulation measures to reduce their impact on the surrounding environment.
3、 Control system
1. Variable frequency speed regulation: Adopting a variable frequency speed regulation system, it can achieve stepless speed regulation of the fan, adjust the air volume and pressure according to actual needs, and improve system efficiency and energy-saving effect.
2. Remote monitoring: Set up a remote control system to monitor the real-time operation status, fault alarms, and other information of the fan, facilitating remote management and maintenance.
3. Protection: Set up overvoltage, undervoltage, overcurrent, overload and other protection functions to ensure that the fan can automatically stop in case of abnormal conditions, damage and accidents.
4、 Other precautions
1. Pipeline design: Reasonably design pipeline layout and diameter, reduce the number of elbows and valves, lower pipeline resistance, and improve transportation efficiency.
2. Dust removal device: A dust removal device is installed at the end of the conveying system to separate the alumina powder from the transport airflow and avoid dust pollution.
3. Maintenance: Regularly maintain the Roots blower, check the wear of bearings, gears, and other components, replace damaged parts in a timely manner, and ensure long-term stable operation of the blower.
In summary, the design scheme of Roots blower for pneumatic conveying of alumina powder needs to comprehensively consider multiple factors such as fan selection, performance parameters, and control system, and be tailored according to actual needs. Through scientific and rational design and selection, an energy-saving pneumatic conveying system can be achieved.
