Roots blower powder conveying
Roots blower plays an important role in powder conveying, and its working principle and advantages make it an ideal choice for powder material conveying. The following is a detailed analysis of the powder conveying of Roots blower:
1、 Working principle
The Roots blower compresses and delivers gas through the relative motion of two blade rotors inside the cylinder. This design enables it to stably transport various powders and granular materials. In the powder conveying system, the airflow generated by the Roots blower serves as a power source to suck in and push the powder material into the conveying pipeline, achieving continuous and stable material conveying.
2、 Application advantages
1. Stable airflow: Roots blowers have a hard exhaust characteristic of forced air supply, which means that the flow rate changes very little when the pressure changes. This characteristic gives the Roots blower an advantage in providing stable airflow, ensuring the stability and continuity of powder transportation.
2. Wear resistance: Due to the possible presence of particles in powder materials, Roots blowers need to have good wear resistance. By using wear-resistant materials to manufacture key components such as impellers, casings, etc., the service life of the equipment can be extended.
3. Sealing performance: Good sealing performance can prevent powder material leakage and ensure conveying efficiency. The Roots blower emphasizes sealing performance to ensure that powder materials do not leak during transportation.
4. Strong adaptability: Roots blowers can adapt to different powder materials and conveying conditions, such as different particle sizes, densities, humidity, etc. By adjusting the speed and flow rate of the fan, the conveying needs of different powder materials can be met.
3、 Selection and Design
1. Flow demand: The selection of the fan needs to be determined based on the system's requirements for the flow rate of the Roots blower. Usually, there is surplus capacity left, so when choosing a fan, the flow rate should have a margin of 1.1-1.25 times the required flow rate of the system.
2. Boosting requirement: The boosting of Roots blower should be balanced with the pressure drop of the system, leaving some margin. Usually, the boost should be 1.05 to 1.15 times the system pressure drop.
3. Wear resistance and sealing: Due to the possibility of particulate matter in powder materials, Roots blowers should have good wear resistance and sealing performance. Wear resistant materials can be used to manufacture key components and strengthen sealing design.
4. Energy saving: On the premise of meeting basic requirements such as air volume and pressure, energy-saving Roots blower models should be selected as much as possible to reduce operating costs. At the same time, attention should be paid to the noise control of the fan, and corresponding noise reduction and shock absorption measures should be taken.
4、 Application examples
Roots blowers are widely used in powder conveying industries such as grain processing, chemical engineering, and port terminals. Here are some specific application examples:
1. Grain processing: In flour mills, Roots blowers provide power for flour pneumatic conveying pumps, transporting flour from storage bins to various production stages. This conveying method improves production efficiency, reduces dust pollution, and improves the working environment.
2. Chemical industry: In chemical production, Roots blowers are used to transport various powder raw materials and products, such as plastic particles, pigments, catalysts, etc. By controlling the speed and flow rate of the fan, the metering and continuous transportation of powder materials can be achieved.
3. Port terminal: At the port terminal, Roots blowers are used to transport bulk cargo such as coal, ore, etc. These materials are usually transported by ship or train to the port, and then conveyed to storage bins or ship loaders through Roots blowers.
In summary, Roots blowers have significant advantages and broad application prospects in powder conveying. By selecting, designing, and maintaining the equipment reasonably, it can ensure stable operation and meet the transportation needs of various powder materials.
